diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2007-06-16 01:56:04 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2007-06-16 01:56:04 +0000 |
| commit | f019ac4dc9b89958657dd8c9d81bb2e270c938e7 (patch) | |
| tree | 59ba27f549ecae008485f94b3771c4fe1df4a563 /target/linux/generic-2.6 | |
| parent | 4f16e9cc3e2c187d19b24785a55ce30a892efd68 (diff) | |
| download | upstream-f019ac4dc9b89958657dd8c9d81bb2e270c938e7.tar.gz upstream-f019ac4dc9b89958657dd8c9d81bb2e270c938e7.tar.bz2 upstream-f019ac4dc9b89958657dd8c9d81bb2e270c938e7.zip | |
prepare for the transition to linux 2.6.22 - make it possible to override the kernel version in the target makefile
SVN-Revision: 7644
Diffstat (limited to 'target/linux/generic-2.6')
39 files changed, 44704 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/config-2.6.22 b/target/linux/generic-2.6/config-2.6.22 new file mode 100644 index 0000000000..5fac0a48f5 --- /dev/null +++ b/target/linux/generic-2.6/config-2.6.22 @@ -0,0 +1,1597 @@ +# CONFIG_6PACK is not set +# CONFIG_8139CP is not set +# CONFIG_9P_FS is not set +# CONFIG_ACENIC is not set +# CONFIG_ACORN_PARTITION is not set +# CONFIG_ADAPTEC_STARFIRE is not set +# CONFIG_ADFS_FS is not set +# CONFIG_AFFS_FS is not set +# CONFIG_AFS_FS is not set +# CONFIG_AF_RXRPC is not set +CONFIG_AIRO=m +CONFIG_AIRO_CS=m +# CONFIG_AMD8111_ETH is not set +# CONFIG_AMIGA_PARTITION is not set +CONFIG_ANON_INODES=y +# CONFIG_APPLICOM is not set +CONFIG_ARCH_FLATMEM_ENABLE=y +# CONFIG_ARCNET is not set +CONFIG_ARPD=y +CONFIG_ASK_IP_FIB_HASH=y +# CONFIG_ATA is not set +# CONFIG_ATALK is not set +# CONFIG_ATARI_PARTITION is not set +# CONFIG_ATA_OVER_ETH is not set +# CONFIG_ATL1 is not set +CONFIG_ATM=m +CONFIG_ATMEL=m +# CONFIG_ATM_AMBASSADOR is not set +CONFIG_ATM_BR2684=m +CONFIG_ATM_BR2684_IPFILTER=y +CONFIG_ATM_CLIP=m +CONFIG_ATM_CLIP_NO_ICMP=y +CONFIG_ATM_DUMMY=m +# CONFIG_ATM_ENI is not set +# CONFIG_ATM_FIRESTREAM is not set +# CONFIG_ATM_FORE200E_MAYBE is not set +# CONFIG_ATM_HE is not set +# CONFIG_ATM_HORIZON is not set +# CONFIG_ATM_IA is not set +# CONFIG_ATM_IDT77252 is not set +# CONFIG_ATM_LANAI is not set +CONFIG_ATM_LANE=m +CONFIG_ATM_MPOA=m +# CONFIG_ATM_NICSTAR is not set +CONFIG_ATM_TCP=m +# CONFIG_ATM_ZATM is not set +# CONFIG_AUDIT is not set +# CONFIG_AUTOFS4_FS is not set +# CONFIG_AUTOFS_FS is not set +CONFIG_AX25=m +# CONFIG_AX25_DAMA_SLAVE is not set +# CONFIG_B44 is not set +# CONFIG_BACKLIGHT_LCD_SUPPORT is not set +CONFIG_BASE_FULL=y +# CONFIG_BASLER_EXCITE is not set +# CONFIG_BAYCOM_SER_FDX is not set +# CONFIG_BAYCOM_SER_HDX is not set +CONFIG_BCM43XX=m +CONFIG_BCM43XX_DEBUG=y +CONFIG_BCM43XX_DMA=y +CONFIG_BCM43XX_DMA_AND_PIO_MODE=y +# CONFIG_BCM43XX_DMA_MODE is not set +CONFIG_BCM43XX_PIO=y +# CONFIG_BCM43XX_PIO_MODE is not set +# CONFIG_BEFS_FS is not set +# CONFIG_BFS_FS is not set +CONFIG_BINFMT_ELF=y +# CONFIG_BINFMT_MISC is not set +# CONFIG_BLINK is not set +# CONFIG_BLK_CPQ_CISS_DA is not set +# CONFIG_BLK_CPQ_DA is not set +# CONFIG_BLK_DEV_3W_XXXX_RAID is not set +# CONFIG_BLK_DEV_AEC62XX is not set +# CONFIG_BLK_DEV_ALI15X3 is not set +# CONFIG_BLK_DEV_AMD74XX is not set +# CONFIG_BLK_DEV_ATIIXP is not set +# CONFIG_BLK_DEV_CMD640 is not set +# CONFIG_BLK_DEV_CMD64X is not set +# CONFIG_BLK_DEV_COW_COMMON is not set +CONFIG_BLK_DEV_CRYPTOLOOP=m +# CONFIG_BLK_DEV_CS5520 is not set +# CONFIG_BLK_DEV_CS5530 is not set +# CONFIG_BLK_DEV_CS5535 is not set +# CONFIG_BLK_DEV_CY82C693 is not set +# CONFIG_BLK_DEV_DAC960 is not set +# CONFIG_BLK_DEV_DELKIN is not set +# CONFIG_BLK_DEV_FD is not set +# CONFIG_BLK_DEV_IDEPNP is not set +# CONFIG_BLK_DEV_IDESCSI is not set +# CONFIG_BLK_DEV_IDETAPE is not set +# CONFIG_BLK_DEV_IDE_SATA is not set +CONFIG_BLK_DEV_INITRD=y +# CONFIG_BLK_DEV_IO_TRACE is not set +# CONFIG_BLK_DEV_IT8213 is not set +# CONFIG_BLK_DEV_IT821X is not set +# CONFIG_BLK_DEV_JMICRON is not set +CONFIG_BLK_DEV_LOOP=m +CONFIG_BLK_DEV_NBD=m +# CONFIG_BLK_DEV_NS87415 is not set +# CONFIG_BLK_DEV_OFFBOARD is not set +# CONFIG_BLK_DEV_OPTI621 is not set +# CONFIG_BLK_DEV_PDC202XX_NEW is not set +# CONFIG_BLK_DEV_PDC202XX_OLD is not set +# CONFIG_BLK_DEV_PIIX is not set +# CONFIG_BLK_DEV_RAM is not set +# CONFIG_BLK_DEV_RZ1000 is not set +CONFIG_BLK_DEV_SD=m +# CONFIG_BLK_DEV_SIIMAGE is not set +# CONFIG_BLK_DEV_SIS5513 is not set +# CONFIG_BLK_DEV_SLC90E66 is not set +# CONFIG_BLK_DEV_SR is not set +# CONFIG_BLK_DEV_SVWKS is not set +# CONFIG_BLK_DEV_SX8 is not set +# CONFIG_BLK_DEV_TC86C001 is not set +# CONFIG_BLK_DEV_TRIFLEX is not set +# CONFIG_BLK_DEV_TRM290 is not set +# CONFIG_BLK_DEV_UB is not set +# CONFIG_BLK_DEV_UMEM is not set +CONFIG_BLOCK=y +# CONFIG_BNX2 is not set +CONFIG_BONDING=m +# CONFIG_BPQETHER is not set +CONFIG_BRIDGE=y +CONFIG_BRIDGE_EBT_802_3=m +CONFIG_BRIDGE_EBT_AMONG=m +CONFIG_BRIDGE_EBT_ARP=m +CONFIG_BRIDGE_EBT_ARPREPLY=m +CONFIG_BRIDGE_EBT_BROUTE=m +CONFIG_BRIDGE_EBT_DNAT=m +CONFIG_BRIDGE_EBT_IP=m +CONFIG_BRIDGE_EBT_LIMIT=m +CONFIG_BRIDGE_EBT_LOG=m +CONFIG_BRIDGE_EBT_MARK=m +CONFIG_BRIDGE_EBT_MARK_T=m +CONFIG_BRIDGE_EBT_PKTTYPE=m +CONFIG_BRIDGE_EBT_REDIRECT=m +CONFIG_BRIDGE_EBT_SNAT=m +CONFIG_BRIDGE_EBT_STP=m +CONFIG_BRIDGE_EBT_T_FILTER=m +CONFIG_BRIDGE_EBT_T_NAT=m +CONFIG_BRIDGE_EBT_ULOG=m +CONFIG_BRIDGE_EBT_VLAN=m +CONFIG_BRIDGE_NETFILTER=y +CONFIG_BRIDGE_NF_EBTABLES=m +CONFIG_BROKEN_ON_SMP=y +CONFIG_BSD_DISKLABEL=y +CONFIG_BSD_PROCESS_ACCT=y +# CONFIG_BSD_PROCESS_ACCT_V3 is not set +CONFIG_BT=m +CONFIG_BT_BNEP=m +CONFIG_BT_BNEP_MC_FILTER=y +CONFIG_BT_BNEP_PROTO_FILTER=y +# CONFIG_BT_CMTP is not set +CONFIG_BT_HCIBCM203X=m +CONFIG_BT_HCIBFUSB=m +# CONFIG_BT_HCIBLUECARD is not set +CONFIG_BT_HCIBPA10X=m +# CONFIG_BT_HCIBT3C is not set +# CONFIG_BT_HCIBTUART is not set +# CONFIG_BT_HCIDTL1 is not set +CONFIG_BT_HCIUART=m +CONFIG_BT_HCIUART_BCSP=y +CONFIG_BT_HCIUART_H4=y +CONFIG_BT_HCIUSB=m +CONFIG_BT_HCIUSB_SCO=y +CONFIG_BT_HCIVHCI=m +CONFIG_BT_HIDP=m +CONFIG_BT_L2CAP=m +CONFIG_BT_RFCOMM=m +CONFIG_BT_RFCOMM_TTY=y +CONFIG_BT_SCO=m +CONFIG_BUG=y +# CONFIG_CAPI_AVM is not set +# CONFIG_CAPI_EICON is not set +# CONFIG_CAPI_TRACE is not set +CONFIG_CARDBUS=y +# CONFIG_CARDMAN_4000 is not set +# CONFIG_CARDMAN_4040 is not set +# CONFIG_CASSINI is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_CDROM_PKTCDVD is not set +CONFIG_CFG80211=m +# CONFIG_CHELSIO_T1 is not set +# CONFIG_CHELSIO_T3 is not set +# CONFIG_CHR_DEV_OSST is not set +# CONFIG_CHR_DEV_SCH is not set +# CONFIG_CHR_DEV_SG is not set +# CONFIG_CHR_DEV_ST is not set +# CONFIG_CICADA_PHY is not set +CONFIG_CIFS=m +# CONFIG_CIFS_DEBUG2 is not set +# CONFIG_CIFS_EXPERIMENTAL is not set +CONFIG_CIFS_POSIX=y +CONFIG_CIFS_STATS=y +# CONFIG_CIFS_STATS2 is not set +# CONFIG_CIFS_WEAK_PW_HASH is not set +# CONFIG_CIFS_XATTR is not set +CONFIG_CLS_U32_MARK=y +CONFIG_CLS_U32_PERF=y +CONFIG_CMDLINE="" +# CONFIG_CODA_FS is not set +CONFIG_CONFIGFS_FS=y +# CONFIG_CONNECTOR is not set +# CONFIG_CRAMFS is not set +CONFIG_CRC16=m +CONFIG_CRC32=y +CONFIG_CRC_CCITT=m +# CONFIG_CRC_ITU_T is not set +CONFIG_CROSSCOMPILE=y +CONFIG_CRYPTO=y +CONFIG_CRYPTO_AES=m +CONFIG_CRYPTO_ALGAPI=y +CONFIG_CRYPTO_ANUBIS=m +CONFIG_CRYPTO_ARC4=m +CONFIG_CRYPTO_BLKCIPHER=y +CONFIG_CRYPTO_BLOWFISH=m +# CONFIG_CRYPTO_CAMELLIA is not set +CONFIG_CRYPTO_CAST5=m +CONFIG_CRYPTO_CAST6=m +CONFIG_CRYPTO_CBC=y +CONFIG_CRYPTO_CRC32C=m +# CONFIG_CRYPTO_CRYPTD is not set +CONFIG_CRYPTO_DEFLATE=m +CONFIG_CRYPTO_DES=y +CONFIG_CRYPTO_ECB=m +# CONFIG_CRYPTO_FCRYPT is not set +# CONFIG_CRYPTO_GF128MUL is not set +CONFIG_CRYPTO_HASH=m +CONFIG_CRYPTO_HMAC=m +CONFIG_CRYPTO_KHAZAD=m +# CONFIG_CRYPTO_LRW is not set +CONFIG_CRYPTO_MANAGER=y +CONFIG_CRYPTO_MD4=m +CONFIG_CRYPTO_MD5=y +CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_NULL=m +# CONFIG_CRYPTO_PCBC is not set +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_SHA1=m +CONFIG_CRYPTO_SHA256=m +CONFIG_CRYPTO_SHA512=m +CONFIG_CRYPTO_TEA=m +CONFIG_CRYPTO_TEST=m +CONFIG_CRYPTO_TGR192=m +CONFIG_CRYPTO_TWOFISH=m +CONFIG_CRYPTO_TWOFISH_COMMON=m +CONFIG_CRYPTO_WP512=m +# CONFIG_CRYPTO_XCBC is not set +# CONFIG_DAB is not set +# CONFIG_DAVICOM_PHY is not set +# CONFIG_DEBUG_FS is not set +# CONFIG_DEBUG_KERNEL is not set +# CONFIG_DECNET is not set +# CONFIG_DEFAULT_AS is not set +# CONFIG_DEFAULT_BIC is not set +# CONFIG_DEFAULT_CFQ is not set +# CONFIG_DEFAULT_CUBIC is not set +CONFIG_DEFAULT_DEADLINE=y +# CONFIG_DEFAULT_HTCP is not set +CONFIG_DEFAULT_IOSCHED="deadline" +# CONFIG_DEFAULT_NOOP is not set +# CONFIG_DEFAULT_RENO is not set +CONFIG_DEFAULT_TCP_CONG="vegas" +CONFIG_DEFAULT_VEGAS=y +# CONFIG_DEFAULT_WESTWOOD is not set +CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" +# CONFIG_DEVFS_DEBUG is not set +CONFIG_DEVFS_FS=y +CONFIG_DEVFS_MOUNT=y +# CONFIG_DGRS is not set +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_DISPLAY_SUPPORT is not set +# CONFIG_DL2K is not set +# CONFIG_DLM is not set +# CONFIG_DMA_ENGINE is not set +# CONFIG_DNOTIFY is not set +# CONFIG_DRM is not set +# CONFIG_DTLK is not set +# CONFIG_DUMMY is not set +# CONFIG_DVB is not set +# CONFIG_DVB_CORE is not set +CONFIG_E100=m +# CONFIG_E1000 is not set +# CONFIG_ECONET is not set +# CONFIG_EEPRO100 is not set +# CONFIG_EFI_PARTITION is not set +# CONFIG_EFS_FS is not set +# CONFIG_ELF_CORE is not set +CONFIG_EMBEDDED=y +CONFIG_ENABLE_MUST_CHECK=y +# CONFIG_EPIC100 is not set +CONFIG_EPOLL=y +# CONFIG_EQUALIZER is not set +CONFIG_EVENTFD=y +CONFIG_EXPERIMENTAL=y +CONFIG_EXPORTFS=m +CONFIG_EXT2_FS=m +# CONFIG_EXT2_FS_XATTR is not set +# CONFIG_EXT2_FS_XIP is not set +CONFIG_EXT3_FS=m +# CONFIG_EXT3_FS_XATTR is not set +# CONFIG_EXT4DEV_FS is not set +CONFIG_FAT_DEFAULT_CODEPAGE=437 +CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1" +CONFIG_FAT_FS=m +# CONFIG_FB is not set +# CONFIG_FB_IBM_GXT4500 is not set +# CONFIG_FDDI is not set +# CONFIG_FEALNX is not set +CONFIG_FIB_RULES=y +# CONFIG_FIREWIRE is not set +CONFIG_FLATMEM=y +CONFIG_FLATMEM_MANUAL=y +CONFIG_FLAT_NODE_MEM_MAP=y +# CONFIG_FORCEDETH is not set +# CONFIG_FS_POSIX_ACL is not set +# CONFIG_FTL is not set +# CONFIG_FUSE_FS is not set +# CONFIG_FUSION is not set +# CONFIG_FUSION_FC is not set +# CONFIG_FUSION_SAS is not set +# CONFIG_FUSION_SPI is not set +CONFIG_FUTEX=y +CONFIG_FW_LOADER=y +CONFIG_GACT_PROB=y +# CONFIG_GAMEPORT is not set +CONFIG_GENERIC_CALIBRATE_DELAY=y +CONFIG_GENERIC_HARDIRQS=y +CONFIG_GENERIC_HWEIGHT=y +CONFIG_GENERIC_IRQ_PROBE=y +CONFIG_GENERIC_TIME=y +# CONFIG_GFS2_FS is not set +# CONFIG_HAMACHI is not set +CONFIG_HAMRADIO=y +# CONFIG_HAPPYMEAL is not set +# CONFIG_HEADERS_CHECK is not set +CONFIG_HERMES=m +CONFIG_HFSPLUS_FS=m +CONFIG_HFS_FS=m +# CONFIG_HID_DEBUG is not set +# CONFIG_HID_FF is not set +CONFIG_HIGH_RES_TIMERS=y +# CONFIG_HIPPI is not set +CONFIG_HOSTAP=m +CONFIG_HOSTAP_CS=m +CONFIG_HOSTAP_FIRMWARE=y +CONFIG_HOSTAP_FIRMWARE_NVRAM=y +CONFIG_HOSTAP_PCI=m +CONFIG_HOSTAP_PLX=m +CONFIG_HOTPLUG=y +# CONFIG_HOTPLUG_PCI is not set +# CONFIG_HP100 is not set +# CONFIG_HPFS_FS is not set +# CONFIG_HUGETLB_PAGE is not set +# CONFIG_HWMON is not set +# CONFIG_HWMON_VID is not set +CONFIG_HZ=100 +CONFIG_HZ_100=y +# CONFIG_HZ_1000 is not set +# CONFIG_HZ_1024 is not set +# CONFIG_HZ_128 is not set +# CONFIG_HZ_250 is not set +# CONFIG_HZ_256 is not set +# CONFIG_HZ_300 is not set +# CONFIG_HZ_48 is not set +# CONFIG_I2C_ALGOPCA is not set +# CONFIG_I2C_ALGOPCF is not set +# CONFIG_I2C_ALI1535 is not set +# CONFIG_I2C_ALI1563 is not set +# CONFIG_I2C_ALI15X3 is not set +# CONFIG_I2C_AMD756 is not set +# CONFIG_I2C_AMD8111 is not set +# CONFIG_I2C_DEBUG_ALGO is not set +# CONFIG_I2C_DEBUG_BUS is not set +# CONFIG_I2C_DEBUG_CHIP is not set +# CONFIG_I2C_DEBUG_CORE is not set +# CONFIG_I2C_ELEKTOR is not set +# CONFIG_I2C_I801 is not set +# CONFIG_I2C_I810 is not set +# CONFIG_I2C_NFORCE2 is not set +# CONFIG_I2C_OCORES is not set +# CONFIG_I2C_PARPORT_LIGHT is not set +# CONFIG_I2C_PCA_ISA is not set +# CONFIG_I2C_PIIX4 is not set +# CONFIG_I2C_PROSAVAGE is not set +# CONFIG_I2C_SAVAGE4 is not set +# CONFIG_I2C_SIMTEC is not set +# CONFIG_I2C_SIS5595 is not set +# CONFIG_I2C_SIS630 is not set +# CONFIG_I2C_SIS96X is not set +# CONFIG_I2C_STUB is not set +# CONFIG_I2C_TINY_USB is not set +# CONFIG_I2C_VIA is not set +# CONFIG_I2C_VIAPRO is not set +# CONFIG_I2C_VOODOO3 is not set +# CONFIG_I2O is not set +# CONFIG_I82092 is not set +# CONFIG_IEEE1394 is not set +CONFIG_IEEE80211=m +CONFIG_IEEE80211_CRYPT_CCMP=m +CONFIG_IEEE80211_CRYPT_TKIP=m +CONFIG_IEEE80211_CRYPT_WEP=m +# CONFIG_IEEE80211_DEBUG is not set +CONFIG_IEEE80211_SOFTMAC=m +# CONFIG_IEEE80211_SOFTMAC_DEBUG is not set +CONFIG_IFB=m +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_IMQ=m +# CONFIG_IMQ_BEHAVIOR_AA is not set +# CONFIG_IMQ_BEHAVIOR_AB is not set +CONFIG_IMQ_BEHAVIOR_BA=y +# CONFIG_IMQ_BEHAVIOR_BB is not set +CONFIG_IMQ_NUM_DEVS=2 +CONFIG_INET=y +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +CONFIG_INET6_TUNNEL=m +CONFIG_INET6_XFRM_MODE_BEET=m +# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set +CONFIG_INET6_XFRM_MODE_TRANSPORT=m +CONFIG_INET6_XFRM_MODE_TUNNEL=m +CONFIG_INET6_XFRM_TUNNEL=m +CONFIG_INET_AH=m +CONFIG_INET_DCCP_DIAG=m +CONFIG_INET_DIAG=m +CONFIG_INET_ESP=m +CONFIG_INET_IPCOMP=m +CONFIG_INET_TCP_DIAG=m +CONFIG_INET_TUNNEL=m +CONFIG_INET_XFRM_MODE_BEET=y +CONFIG_INET_XFRM_MODE_TRANSPORT=y +CONFIG_INET_XFRM_MODE_TUNNEL=y +CONFIG_INET_XFRM_TUNNEL=m +# CONFIG_INFINIBAND is not set +# CONFIG_INFTL is not set +CONFIG_INIT_ENV_ARG_LIMIT=32 +# CONFIG_INOTIFY is not set +# CONFIG_INOTIFY_USER is not set +# CONFIG_INPUT is not set +# CONFIG_INPUT_EVBUG is not set +CONFIG_INPUT_EVDEV=m +# CONFIG_INPUT_FF_MEMLESS is not set +# CONFIG_INPUT_JOYDEV is not set +# CONFIG_INPUT_JOYSTICK is not set +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MISC is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_TABLET is not set +# CONFIG_INPUT_TOUCHSCREEN is not set +# CONFIG_INPUT_TSDEV is not set +# CONFIG_IOSCHED_AS is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_IOSCHED_DEADLINE=y +CONFIG_IOSCHED_NOOP=y +CONFIG_IP6_NF_FILTER=m +CONFIG_IP6_NF_IPTABLES=m +CONFIG_IP6_NF_MANGLE=m +CONFIG_IP6_NF_MATCH_AH=m +CONFIG_IP6_NF_MATCH_EUI64=m +CONFIG_IP6_NF_MATCH_FRAG=m +CONFIG_IP6_NF_MATCH_HL=m +CONFIG_IP6_NF_MATCH_IPV6HEADER=m +CONFIG_IP6_NF_MATCH_LIMIT=m +# CONFIG_IP6_NF_MATCH_MH is not set +CONFIG_IP6_NF_MATCH_OPTS=m +CONFIG_IP6_NF_MATCH_OWNER=m +CONFIG_IP6_NF_MATCH_RT=m +CONFIG_IP6_NF_QUEUE=m +CONFIG_IP6_NF_RAW=m +CONFIG_IP6_NF_TARGET_HL=m +CONFIG_IP6_NF_TARGET_IMQ=m +CONFIG_IP6_NF_TARGET_LOG=m +CONFIG_IP6_NF_TARGET_REJECT=m +CONFIG_IP6_NF_TARGET_ROUTE=m +# CONFIG_IPC_NS is not set +# CONFIG_IPMI_HANDLER is not set +CONFIG_IPSEC_NAT_TRAVERSAL=y +CONFIG_IPV6=m +# CONFIG_IPV6_MIP6 is not set +# CONFIG_IPV6_MULTIPLE_TABLES is not set +# CONFIG_IPV6_OPTIMISTIC_DAD is not set +# CONFIG_IPV6_PRIVACY is not set +CONFIG_IPV6_ROUTER_PREF=y +# CONFIG_IPV6_ROUTE_INFO is not set +CONFIG_IPV6_SIT=m +# CONFIG_IPV6_TUNNEL is not set +CONFIG_IPW2100=m +# CONFIG_IPW2100_DEBUG is not set +CONFIG_IPW2100_MONITOR=y +CONFIG_IPW2200=m +# CONFIG_IPW2200_DEBUG is not set +CONFIG_IPW2200_MONITOR=y +# CONFIG_IPW2200_PROMISCUOUS is not set +# CONFIG_IPW2200_QOS is not set +# CONFIG_IPW2200_RADIOTAP is not set +# CONFIG_IPX is not set +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_DCCP=m +CONFIG_IP_DCCP_ACKVEC=y +CONFIG_IP_DCCP_CCID2=m +# CONFIG_IP_DCCP_CCID2_DEBUG is not set +CONFIG_IP_DCCP_CCID3=m +# CONFIG_IP_DCCP_CCID3_DEBUG is not set +CONFIG_IP_DCCP_CCID3_RTO=100 +CONFIG_IP_DCCP_TFRC_LIB=m +CONFIG_IP_FIB_HASH=y +# CONFIG_IP_FIB_TRIE is not set +# CONFIG_IP_MROUTE is not set +CONFIG_IP_MULTICAST=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_NF_AMANDA=m +CONFIG_IP_NF_ARPFILTER=m +CONFIG_IP_NF_ARPTABLES=m +CONFIG_IP_NF_ARP_MANGLE=m +CONFIG_IP_NF_CONNTRACK=y +# CONFIG_IP_NF_CONNTRACK_EVENTS is not set +CONFIG_IP_NF_CONNTRACK_MARK=y +# CONFIG_IP_NF_CONNTRACK_SUPPORT is not set +CONFIG_IP_NF_CT_ACCT=y +CONFIG_IP_NF_CT_PROTO_SCTP=m +CONFIG_IP_NF_FILTER=y +CONFIG_IP_NF_FTP=m +CONFIG_IP_NF_H323=m +CONFIG_IP_NF_IPTABLES=y +CONFIG_IP_NF_IRC=m +CONFIG_IP_NF_MANGLE=y +CONFIG_IP_NF_MATCH_ADDRTYPE=m +CONFIG_IP_NF_MATCH_AH=m +CONFIG_IP_NF_MATCH_ECN=m +CONFIG_IP_NF_MATCH_HASHLIMIT=m +CONFIG_IP_NF_MATCH_IPP2P=m +CONFIG_IP_NF_MATCH_IPRANGE=m +CONFIG_IP_NF_MATCH_LAYER7=m +# CONFIG_IP_NF_MATCH_LAYER7_DEBUG is not set +CONFIG_IP_NF_MATCH_OWNER=m +CONFIG_IP_NF_MATCH_RECENT=m +CONFIG_IP_NF_MATCH_SET=m +CONFIG_IP_NF_MATCH_TIME=m +CONFIG_IP_NF_MATCH_TOS=m +CONFIG_IP_NF_MATCH_TTL=m +CONFIG_IP_NF_NAT=y +CONFIG_IP_NF_NAT_AMANDA=m +CONFIG_IP_NF_NAT_FTP=m +CONFIG_IP_NF_NAT_H323=m +CONFIG_IP_NF_NAT_IRC=m +CONFIG_IP_NF_NAT_NEEDED=y +CONFIG_IP_NF_NAT_PPTP=m +CONFIG_IP_NF_NAT_SIP=m +# CONFIG_IP_NF_NAT_SNMP_BASIC is not set +CONFIG_IP_NF_NAT_TFTP=m +# CONFIG_IP_NF_NETBIOS_NS is not set +CONFIG_IP_NF_PPTP=m +CONFIG_IP_NF_QUEUE=m +CONFIG_IP_NF_RAW=m +CONFIG_IP_NF_SET=m +CONFIG_IP_NF_SET_HASHSIZE=1024 +CONFIG_IP_NF_SET_IPHASH=m +CONFIG_IP_NF_SET_IPMAP=m +CONFIG_IP_NF_SET_IPPORTHASH=m +CONFIG_IP_NF_SET_IPTREE=m +CONFIG_IP_NF_SET_MACIPMAP=m +CONFIG_IP_NF_SET_MAX=256 +CONFIG_IP_NF_SET_NETHASH=m +CONFIG_IP_NF_SET_PORTMAP=m +CONFIG_IP_NF_SIP=m +# CONFIG_IP_NF_TARGET_CLUSTERIP is not set +CONFIG_IP_NF_TARGET_ECN=m +CONFIG_IP_NF_TARGET_IMQ=m +CONFIG_IP_NF_TARGET_LOG=m +CONFIG_IP_NF_TARGET_MASQUERADE=y +CONFIG_IP_NF_TARGET_NETMAP=m +CONFIG_IP_NF_TARGET_REDIRECT=y +CONFIG_IP_NF_TARGET_REJECT=y +CONFIG_IP_NF_TARGET_ROUTE=m +CONFIG_IP_NF_TARGET_SAME=m +CONFIG_IP_NF_TARGET_SET=m +CONFIG_IP_NF_TARGET_TCPMSS=y +CONFIG_IP_NF_TARGET_TOS=m +CONFIG_IP_NF_TARGET_TTL=m +CONFIG_IP_NF_TARGET_ULOG=m +CONFIG_IP_NF_TFTP=m +# CONFIG_IP_PNP is not set +CONFIG_IP_ROUTE_FWMARK=y +CONFIG_IP_ROUTE_MULTIPATH=y +CONFIG_IP_ROUTE_MULTIPATH_CACHED=y +CONFIG_IP_ROUTE_MULTIPATH_DRR=m +CONFIG_IP_ROUTE_MULTIPATH_RANDOM=m +CONFIG_IP_ROUTE_MULTIPATH_RR=m +CONFIG_IP_ROUTE_MULTIPATH_WRANDOM=m +CONFIG_IP_ROUTE_VERBOSE=y +# CONFIG_IP_SCTP is not set +# CONFIG_IP_VS is not set +# CONFIG_IRDA is not set +# CONFIG_ISCSI_TCP is not set +CONFIG_ISDN=m +CONFIG_ISDN_CAPI=m +CONFIG_ISDN_CAPI_CAPI20=m +CONFIG_ISDN_CAPI_CAPIFS=m +CONFIG_ISDN_CAPI_CAPIFS_BOOL=y +CONFIG_ISDN_CAPI_MIDDLEWARE=y +# CONFIG_ISDN_DRV_AVMB1_VERBOSE_REASON is not set +# CONFIG_ISDN_I4L is not set +CONFIG_ISO9660_FS=m +# CONFIG_IXGB is not set +CONFIG_JBD=m +# CONFIG_JBD_DEBUG is not set +# CONFIG_JFFS2_CMODE_NONE is not set +CONFIG_JFFS2_CMODE_PRIORITY=y +# CONFIG_JFFS2_CMODE_SIZE is not set +CONFIG_JFFS2_COMPRESSION_OPTIONS=y +CONFIG_JFFS2_FS=y +CONFIG_JFFS2_FS_DEBUG=0 +CONFIG_JFFS2_FS_WRITEBUFFER=y +# CONFIG_JFFS2_FS_XATTR is not set +CONFIG_JFFS2_RTIME=y +# CONFIG_JFFS2_RUBIN is not set +# CONFIG_JFFS2_SUMMARY is not set +CONFIG_JFFS2_ZLIB=y +# CONFIG_JFFS_FS is not set +# CONFIG_JFS_DEBUG is not set +CONFIG_JFS_FS=m +# CONFIG_JFS_POSIX_ACL is not set +# CONFIG_JFS_SECURITY is not set +# CONFIG_JFS_STATISTICS is not set +CONFIG_JOLIET=y +# CONFIG_KALLSYMS is not set +# CONFIG_KARMA_PARTITION is not set +# CONFIG_KEXEC is not set +# CONFIG_KEYS is not set +# CONFIG_KMOD is not set +# CONFIG_LAPB is not set +# CONFIG_LASAT is not set +# CONFIG_LBD is not set +# CONFIG_LDM_PARTITION is not set +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_TIMER=y +# CONFIG_LEGACY_PTYS is not set +CONFIG_LIBCRC32C=m +# CONFIG_LIBERTAS_USB is not set +CONFIG_LLC=y +CONFIG_LLC2=m +CONFIG_LOCALVERSION="" +CONFIG_LOCALVERSION_AUTO=y +CONFIG_LOCKD=m +CONFIG_LOCKDEP_SUPPORT=y +CONFIG_LOCKD_V4=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_LSF is not set +# CONFIG_LXT_PHY is not set +# CONFIG_MAC80211_DEBUG is not set +CONFIG_MAC80211_LEDS=y +CONFIG_MAC80211=m +# CONFIG_MAC_EMUMOUSEBTN is not set +CONFIG_MAC_PARTITION=y +# CONFIG_MAGIC_SYSRQ is not set +# CONFIG_MARKEINS is not set +# CONFIG_MARVELL_PHY is not set +# CONFIG_MD is not set +# CONFIG_MEGARAID_LEGACY is not set +# CONFIG_MEGARAID_NEWGEN is not set +# CONFIG_MEGARAID_SAS is not set +# CONFIG_MFD_SM501 is not set +CONFIG_MII=y +CONFIG_MINIX_FS=m +# CONFIG_MINIX_SUBPARTITION is not set +CONFIG_MINI_FO=y +CONFIG_MKISS=m +# CONFIG_MMC is not set +CONFIG_MMU=y +CONFIG_MODULES=y +# CONFIG_MODULE_FORCE_UNLOAD is not set +# CONFIG_MODULE_SRCVERSION_ALL is not set +CONFIG_MODULE_UNLOAD=y +# CONFIG_MODVERSIONS is not set +CONFIG_MSDOS_FS=m +CONFIG_MSDOS_PARTITION=y +# CONFIG_MTD_NAND is not set +CONFIG_MTD_SPLIT_ROOTFS=y +# CONFIG_MTD_UBI is not set +# CONFIG_MYRI10GE is not set +# CONFIG_NCP_FS is not set +CONFIG_NET=y +# CONFIG_NETCONSOLE is not set +# CONFIG_NETDEBUG is not set +CONFIG_NETDEVICES=y +# CONFIG_NETDEV_10000 is not set +CONFIG_NETFILTER=y +# CONFIG_NETFILTER_DEBUG is not set +# CONFIG_NETFILTER_NETLINK is not set +CONFIG_NETFILTER_XTABLES=y +CONFIG_NETFILTER_XT_MATCH_COMMENT=m +CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m +CONFIG_NETFILTER_XT_MATCH_CONNMARK=m +CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y +CONFIG_NETFILTER_XT_MATCH_DCCP=m +CONFIG_NETFILTER_XT_MATCH_DSCP=m +CONFIG_NETFILTER_XT_MATCH_ESP=m +CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m +CONFIG_NETFILTER_XT_MATCH_HELPER=m +CONFIG_NETFILTER_XT_MATCH_LENGTH=m +CONFIG_NETFILTER_XT_MATCH_LIMIT=y +CONFIG_NETFILTER_XT_MATCH_MAC=m +CONFIG_NETFILTER_XT_MATCH_MARK=m +CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y +CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m +CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m +CONFIG_NETFILTER_XT_MATCH_POLICY=m +CONFIG_NETFILTER_XT_MATCH_PORTSCAN=m +# CONFIG_NETFILTER_XT_MATCH_QUOTA is not set +CONFIG_NETFILTER_XT_MATCH_REALM=m +CONFIG_NETFILTER_XT_MATCH_SCTP=m +CONFIG_NETFILTER_XT_MATCH_STATE=y +# CONFIG_NETFILTER_XT_MATCH_STATISTIC is not set +CONFIG_NETFILTER_XT_MATCH_STRING=m +CONFIG_NETFILTER_XT_MATCH_TCPMSS=y +CONFIG_NETFILTER_XT_TARGET_CHAOS=m +CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m +CONFIG_NETFILTER_XT_TARGET_CONNMARK=m +CONFIG_NETFILTER_XT_TARGET_DELUDE=m +CONFIG_NETFILTER_XT_TARGET_DSCP=m +CONFIG_NETFILTER_XT_TARGET_MARK=m +CONFIG_NETFILTER_XT_TARGET_NFLOG=m +CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m +CONFIG_NETFILTER_XT_TARGET_NOTRACK=m +CONFIG_NETFILTER_XT_TARGET_TCPMSS=y +# CONFIG_NETPOLL is not set +# CONFIG_NETROM is not set +# CONFIG_NETWORK_SECMARK is not set +# CONFIG_NETXEN_NIC is not set +CONFIG_NET_ACT_GACT=m +CONFIG_NET_ACT_IPT=m +CONFIG_NET_ACT_MIRRED=m +CONFIG_NET_ACT_PEDIT=m +CONFIG_NET_ACT_POLICE=m +# CONFIG_NET_ACT_SIMP is not set +CONFIG_NET_CLS=y +CONFIG_NET_CLS_ACT=y +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_FW=m +CONFIG_NET_CLS_IND=y +CONFIG_NET_CLS_POLICE=y +CONFIG_NET_CLS_ROUTE=y +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_RSVP=m +CONFIG_NET_CLS_RSVP6=m +CONFIG_NET_CLS_TCINDEX=m +CONFIG_NET_CLS_U32=m +CONFIG_NET_EMATCH=y +CONFIG_NET_EMATCH_CMP=m +CONFIG_NET_EMATCH_META=m +CONFIG_NET_EMATCH_NBYTE=m +CONFIG_NET_EMATCH_STACK=32 +CONFIG_NET_EMATCH_TEXT=m +CONFIG_NET_EMATCH_U32=m +CONFIG_NET_ESTIMATOR=y +CONFIG_NET_ETHERNET=y +# CONFIG_NET_FC is not set +CONFIG_NET_IPGRE=m +CONFIG_NET_IPGRE_BROADCAST=y +CONFIG_NET_IPIP=m +CONFIG_NET_KEY=m +# CONFIG_NET_KEY_MIGRATE is not set +CONFIG_NET_PCI=y +# CONFIG_NET_PCMCIA is not set +CONFIG_NET_PKTGEN=m +# CONFIG_NET_POLL_CONTROLLER is not set +CONFIG_NET_RADIO=y +CONFIG_NET_SCHED=y +CONFIG_NET_SCH_ATM=m +CONFIG_NET_SCH_CBQ=m +# CONFIG_NET_SCH_CLK_CPU is not set +# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set +CONFIG_NET_SCH_CLK_JIFFIES=y +CONFIG_NET_SCH_DSMARK=m +CONFIG_NET_SCH_ESFQ=m +CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_HFSC=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_RED=m +CONFIG_NET_SCH_SFQ=m +CONFIG_NET_SCH_TBF=m +CONFIG_NET_SCH_TEQL=m +# CONFIG_NET_TULIP is not set +CONFIG_NET_WIRELESS=y +CONFIG_NET_WIRELESS_RTNETLINK=y +CONFIG_NEW_LEDS=y +CONFIG_NFSD=m +CONFIG_NFSD_TCP=y +# CONFIG_NFSD_V2_ACL is not set +CONFIG_NFSD_V3=y +# CONFIG_NFSD_V3_ACL is not set +CONFIG_NFSD_V4=y +# CONFIG_NFS_ACL_SUPPORT is not set +CONFIG_NFS_COMMON=y +# CONFIG_NFS_DIRECTIO is not set +CONFIG_NFS_FS=m +CONFIG_NFS_V3=y +# CONFIG_NFS_V3_ACL is not set +CONFIG_NFS_V4=y +# CONFIG_NFTL is not set +CONFIG_NF_CONNTRACK=y +# CONFIG_NF_CONNTRACK_AMANDA is not set +CONFIG_NF_CONNTRACK_ENABLED=y +# CONFIG_NF_CONNTRACK_EVENTS is not set +CONFIG_NF_CONNTRACK_FTP=m +CONFIG_NF_CONNTRACK_H323=m +CONFIG_NF_CONNTRACK_IPV4=y +# CONFIG_NF_CONNTRACK_IPV6 is not set +CONFIG_NF_CONNTRACK_IRC=m +CONFIG_NF_CONNTRACK_MARK=y +# CONFIG_NF_CONNTRACK_NETBIOS_NS is not set +# CONFIG_NF_CONNTRACK_PPTP is not set +CONFIG_NF_CONNTRACK_PROC_COMPAT=y +# CONFIG_NF_CONNTRACK_SANE is not set +CONFIG_NF_CONNTRACK_SIP=m +CONFIG_NF_CONNTRACK_SUPPORT=y +# CONFIG_NF_CONNTRACK_TFTP is not set +CONFIG_NF_CT_ACCT=y +# CONFIG_NF_CT_PROTO_SCTP is not set +CONFIG_NF_NAT=y +# CONFIG_NF_NAT_AMANDA is not set +CONFIG_NF_NAT_FTP=m +CONFIG_NF_NAT_H323=m +CONFIG_NF_NAT_IRC=m +CONFIG_NF_NAT_NEEDED=y +# CONFIG_NF_NAT_PPTP is not set +CONFIG_NF_NAT_SIP=m +# CONFIG_NF_NAT_SNMP_BASIC is not set +# CONFIG_NF_NAT_TFTP is not set +CONFIG_NLS=m +# CONFIG_NLS_ASCII is not set +CONFIG_NLS_CODEPAGE_1250=m +# CONFIG_NLS_CODEPAGE_1251 is not set +CONFIG_NLS_CODEPAGE_437=m +# CONFIG_NLS_CODEPAGE_737 is not set +# CONFIG_NLS_CODEPAGE_775 is not set +CONFIG_NLS_CODEPAGE_850=m +# CONFIG_NLS_CODEPAGE_852 is not set +# CONFIG_NLS_CODEPAGE_855 is not set +# CONFIG_NLS_CODEPAGE_857 is not set +# CONFIG_NLS_CODEPAGE_860 is not set +# CONFIG_NLS_CODEPAGE_861 is not set +# CONFIG_NLS_CODEPAGE_862 is not set +# CONFIG_NLS_CODEPAGE_863 is not set +# CONFIG_NLS_CODEPAGE_864 is not set +# CONFIG_NLS_CODEPAGE_865 is not set +# CONFIG_NLS_CODEPAGE_866 is not set +# CONFIG_NLS_CODEPAGE_869 is not set +# CONFIG_NLS_CODEPAGE_874 is not set +# CONFIG_NLS_CODEPAGE_932 is not set +# CONFIG_NLS_CODEPAGE_936 is not set +# CONFIG_NLS_CODEPAGE_949 is not set +# CONFIG_NLS_CODEPAGE_950 is not set +CONFIG_NLS_DEFAULT="iso8859-1" +CONFIG_NLS_ISO8859_1=m +# CONFIG_NLS_ISO8859_13 is not set +# CONFIG_NLS_ISO8859_14 is not set +CONFIG_NLS_ISO8859_15=m +# CONFIG_NLS_ISO8859_2 is not set +# CONFIG_NLS_ISO8859_3 is not set +# CONFIG_NLS_ISO8859_4 is not set +# CONFIG_NLS_ISO8859_5 is not set +# CONFIG_NLS_ISO8859_6 is not set +# CONFIG_NLS_ISO8859_7 is not set +# CONFIG_NLS_ISO8859_8 is not set +# CONFIG_NLS_ISO8859_9 is not set +CONFIG_NLS_KOI8_R=m +# CONFIG_NLS_KOI8_U is not set +CONFIG_NLS_UTF8=m +CONFIG_NO_HZ=y +CONFIG_NORTEL_HERMES=m +# CONFIG_NS83820 is not set +# CONFIG_NTFS_DEBUG is not set +CONFIG_NTFS_FS=m +CONFIG_NTFS_RW=y +# CONFIG_OCFS2_FS is not set +# CONFIG_OSF_PARTITION is not set +CONFIG_PACKET=y +CONFIG_PACKET_MMAP=y +# CONFIG_PARPORT is not set +CONFIG_PARTITION_ADVANCED=y +# CONFIG_PATA_ALI is not set +# CONFIG_PATA_AMD is not set +# CONFIG_PATA_ARTOP is not set +# CONFIG_PATA_ATIIXP is not set +# CONFIG_PATA_CMD640_PCI is not set +# CONFIG_PATA_CMD64X is not set +# CONFIG_PATA_CS5520 is not set +# CONFIG_PATA_CS5530 is not set +# CONFIG_PATA_CS5535 is not set +# CONFIG_PATA_CYPRESS is not set +# CONFIG_PATA_EFAR is not set +# CONFIG_PATA_HPT366 is not set +# CONFIG_PATA_HPT37X is not set +# CONFIG_PATA_HPT3X2N is not set +# CONFIG_PATA_HPT3X3 is not set +# CONFIG_PATA_ISAPNP is not set +# CONFIG_PATA_IT8213 is not set +# CONFIG_PATA_IT821X is not set +# CONFIG_PATA_JMICRON is not set +# CONFIG_PATA_LEGACY is not set +# CONFIG_PATA_MARVELL is not set +# CONFIG_PATA_MPIIX is not set +# CONFIG_PATA_NETCELL is not set +# CONFIG_PATA_NS87410 is not set +# CONFIG_PATA_OLDPIIX is not set +# CONFIG_PATA_OPTI is not set +# CONFIG_PATA_OPTIDMA is not set +# CONFIG_PATA_PCMCIA is not set +# CONFIG_PATA_PDC2027X is not set +# CONFIG_PATA_PDC_OLD is not set +CONFIG_PATA_PLATFORM=m +# CONFIG_PATA_QDI is not set +# CONFIG_PATA_RADISYS is not set +# CONFIG_PATA_RZ1000 is not set +# CONFIG_PATA_SC1200 is not set +# CONFIG_PATA_SERVERWORKS is not set +# CONFIG_PATA_SIL680 is not set +# CONFIG_PATA_SIS is not set +# CONFIG_PATA_TRIFLEX is not set +# CONFIG_PATA_VIA is not set +# CONFIG_PATA_WINBOND is not set +# CONFIG_PATA_WINBOND_VLB is not set +# CONFIG_PC300TOO is not set +# CONFIG_PCCARD is not set +CONFIG_PCI=y +CONFIG_PCI_ATMEL=m +CONFIG_PCI_HERMES=m +# CONFIG_PCMCIA is not set +# CONFIG_PCMCIA_AHA152X is not set +# CONFIG_PCMCIA_DEBUG is not set +# CONFIG_PCMCIA_FDOMAIN is not set +# CONFIG_PCMCIA_HERMES is not set +# CONFIG_PCMCIA_IOCTL is not set +# CONFIG_PCMCIA_LOAD_CIS is not set +# CONFIG_PCMCIA_NETWAVE is not set +# CONFIG_PCMCIA_NINJA_SCSI is not set +# CONFIG_PCMCIA_QLOGIC is not set +# CONFIG_PCMCIA_RAYCS is not set +# CONFIG_PCMCIA_SPECTRUM is not set +# CONFIG_PCMCIA_SYM53C500 is not set +# CONFIG_PCMCIA_WAVELAN is not set +# CONFIG_PCMCIA_WL3501 is not set +# CONFIG_PCNET32 is not set +# CONFIG_PD6729 is not set +# CONFIG_PHANTOM is not set +# CONFIG_PHONE is not set +# CONFIG_PHYLIB is not set +CONFIG_PLIST=y +CONFIG_PLX_HERMES=m +# CONFIG_PM is not set +# CONFIG_POSIX_MQUEUE is not set +CONFIG_PPP=m +CONFIG_PPPOATM=m +CONFIG_PPPOE=m +CONFIG_PPP_ASYNC=m +CONFIG_PPP_BSDCOMP=m +CONFIG_PPP_DEFLATE=m +CONFIG_PPP_FILTER=y +CONFIG_PPP_MPPE=m +CONFIG_PPP_MULTILINK=y +CONFIG_PPP_SYNC_TTY=m +# CONFIG_PREEMPT is not set +CONFIG_PREEMPT_NONE=y +# CONFIG_PREEMPT_VOLUNTARY is not set +CONFIG_PREVENT_FIRMWARE_BUILD=y +CONFIG_PRINTK=y +# CONFIG_PRINTK_TIME is not set +CONFIG_PRISM54=m +CONFIG_PROC_FS=y +CONFIG_PROC_KCORE=y +CONFIG_PROC_SYSCTL=y +# CONFIG_PROFILING is not set +# CONFIG_QEMU is not set +# CONFIG_QLA3XXX is not set +# CONFIG_QNX4FS_FS is not set +# CONFIG_QUOTA is not set +# CONFIG_R3964 is not set +# CONFIG_R8169 is not set +# CONFIG_RADIO_ADAPTERS is not set +# CONFIG_RADIO_AZTECH is not set +# CONFIG_RADIO_CADET is not set +# CONFIG_RADIO_GEMTEK is not set +# CONFIG_RADIO_GEMTEK_PCI is not set +# CONFIG_RADIO_MAESTRO is not set +# CONFIG_RADIO_MAXIRADIO is not set +# CONFIG_RADIO_RTRACK is not set +# CONFIG_RADIO_RTRACK2 is not set +# CONFIG_RADIO_SF16FMI is not set +# CONFIG_RADIO_SF16FMR2 is not set +# CONFIG_RADIO_TERRATEC is not set +# CONFIG_RADIO_TRUST is not set +# CONFIG_RADIO_TYPHOON is not set +# CONFIG_RADIO_ZOLTRIX is not set +# CONFIG_RAID_ATTRS is not set +CONFIG_RAMFS=y +# CONFIG_RAW_DRIVER is not set +# CONFIG_REISERFS_CHECK is not set +CONFIG_REISERFS_FS=m +# CONFIG_REISERFS_FS_XATTR is not set +# CONFIG_REISERFS_PROC_INFO is not set +# CONFIG_RELAY is not set +# CONFIG_RESOURCES_64BIT is not set +# CONFIG_RFD_FTL is not set +# CONFIG_RFKILL is not set +CONFIG_ROMFS_FS=m +# CONFIG_ROSE is not set +CONFIG_RPCSEC_GSS_KRB5=m +# CONFIG_RPCSEC_GSS_SPKM3 is not set +# CONFIG_RTC_CLASS is not set +CONFIG_RTC_DRV_CMOS=y +# CONFIG_RTC_DRV_MAX6900 is not set +CONFIG_RT_MUTEXES=y +# CONFIG_S2IO is not set +# CONFIG_SATA_INIC162X is not set +# CONFIG_SATA_MV is not set +# CONFIG_SATA_NV is not set +# CONFIG_SATA_PROMISE is not set +# CONFIG_SATA_QSTOR is not set +# CONFIG_SATA_SIL is not set +# CONFIG_SATA_SIL24 is not set +# CONFIG_SATA_SIS is not set +# CONFIG_SATA_SVW is not set +# CONFIG_SATA_SX4 is not set +# CONFIG_SATA_ULI is not set +# CONFIG_SATA_VIA is not set +# CONFIG_SATA_VITESSE is not set +# CONFIG_SC92031 is not set +CONFIG_SCSI=m +# CONFIG_SCSI_3W_9XXX is not set +# CONFIG_SCSI_7000FASST is not set +# CONFIG_SCSI_AACRAID is not set +# CONFIG_SCSI_ACARD is not set +# CONFIG_SCSI_ADVANSYS is not set +# CONFIG_SCSI_AHA152X is not set +# CONFIG_SCSI_AHA1542 is not set +# CONFIG_SCSI_AIC79XX is not set +# CONFIG_SCSI_AIC7XXX is not set +# CONFIG_SCSI_AIC7XXX_OLD is not set +# CONFIG_SCSI_AIC94XX is not set +# CONFIG_SCSI_ARCMSR is not set +# CONFIG_SCSI_BUSLOGIC is not set +# CONFIG_SCSI_CONSTANTS is not set +# CONFIG_SCSI_DC390T is not set +# CONFIG_SCSI_DC395x is not set +# CONFIG_SCSI_DEBUG is not set +# CONFIG_SCSI_DMX3191D is not set +# CONFIG_SCSI_DPT_I2O is not set +# CONFIG_SCSI_DTC3280 is not set +# CONFIG_SCSI_EATA is not set +# CONFIG_SCSI_ESP_CORE is not set +# CONFIG_SCSI_FC_ATTRS is not set +# CONFIG_SCSI_FUTURE_DOMAIN is not set +# CONFIG_SCSI_GDTH is not set +# CONFIG_SCSI_GENERIC_NCR5380 is not set +# CONFIG_SCSI_GENERIC_NCR5380_MMIO is not set +# CONFIG_SCSI_HPTIOP is not set +# CONFIG_SCSI_IN2000 is not set +# CONFIG_SCSI_INIA100 is not set +# CONFIG_SCSI_INITIO is not set +# CONFIG_SCSI_IPR is not set +# CONFIG_SCSI_IPS is not set +# CONFIG_SCSI_ISCSI_ATTRS is not set +# CONFIG_SCSI_LOGGING is not set +# CONFIG_SCSI_LPFC is not set +CONFIG_SCSI_MULTI_LUN=y +# CONFIG_SCSI_NCR53C406A is not set +# CONFIG_SCSI_NETLINK is not set +# CONFIG_SCSI_NSP32 is not set +# CONFIG_SCSI_PAS16 is not set +CONFIG_SCSI_PROC_FS=y +# CONFIG_SCSI_PSI240I is not set +# CONFIG_SCSI_QLA_FC is not set +# CONFIG_SCSI_QLA_ISCSI is not set +# CONFIG_SCSI_QLOGIC_1280 is not set +# CONFIG_SCSI_QLOGIC_FAS is not set +# CONFIG_SCSI_SAS_ATTRS is not set +# CONFIG_SCSI_SAS_LIBSAS is not set +# CONFIG_SCSI_SCAN_ASYNC is not set +# CONFIG_SCSI_SEAGATE is not set +# CONFIG_SCSI_SPI_ATTRS is not set +# CONFIG_SCSI_SRP is not set +# CONFIG_SCSI_STEX is not set +# CONFIG_SCSI_SYM53C416 is not set +# CONFIG_SCSI_SYM53C8XX_2 is not set +# CONFIG_SCSI_T128 is not set +# CONFIG_SCSI_TGT is not set +# CONFIG_SCSI_U14_34F is not set +# CONFIG_SCSI_ULTRASTOR is not set +# CONFIG_SECURITY is not set +CONFIG_SELECT_MEMORY_MODEL=y +# CONFIG_SENSORS_ABITUGURU is not set +# CONFIG_SENSORS_AD7418 is not set +# CONFIG_SENSORS_ADM1021 is not set +# CONFIG_SENSORS_ADM1025 is not set +# CONFIG_SENSORS_ADM1026 is not set +# CONFIG_SENSORS_ADM1029 is not set +# CONFIG_SENSORS_ADM1031 is not set +# CONFIG_SENSORS_ADM9240 is not set +# CONFIG_SENSORS_ASB100 is not set +# CONFIG_SENSORS_ATXP1 is not set +# CONFIG_SENSORS_DS1337 is not set +# CONFIG_SENSORS_DS1374 is not set +# CONFIG_SENSORS_DS1621 is not set +# CONFIG_SENSORS_EEPROM is not set +# CONFIG_SENSORS_F71805F is not set +# CONFIG_SENSORS_FSCHER is not set +# CONFIG_SENSORS_FSCPOS is not set +# CONFIG_SENSORS_GL518SM is not set +# CONFIG_SENSORS_GL520SM is not set +# CONFIG_SENSORS_HDAPS is not set +# CONFIG_SENSORS_IT87 is not set +# CONFIG_SENSORS_K8TEMP is not set +# CONFIG_SENSORS_LM63 is not set +# CONFIG_SENSORS_LM75 is not set +# CONFIG_SENSORS_LM77 is not set +# CONFIG_SENSORS_LM78 is not set +# CONFIG_SENSORS_LM80 is not set +# CONFIG_SENSORS_LM83 is not set +# CONFIG_SENSORS_LM85 is not set +# CONFIG_SENSORS_LM87 is not set +# CONFIG_SENSORS_LM90 is not set +# CONFIG_SENSORS_LM92 is not set +# CONFIG_SENSORS_MAX1619 is not set +# CONFIG_SENSORS_MAX6650 is not set +# CONFIG_SENSORS_MAX6875 is not set +# CONFIG_SENSORS_PC87427 is not set +# CONFIG_SENSORS_PCA9539 is not set +# CONFIG_SENSORS_PCF8574 is not set +# CONFIG_SENSORS_PCF8591 is not set +# CONFIG_SENSORS_SIS5595 is not set +# CONFIG_SENSORS_SMSC47B397 is not set +# CONFIG_SENSORS_SMSC47M1 is not set +# CONFIG_SENSORS_SMSC47M192 is not set +# CONFIG_SENSORS_VIA686A is not set +# CONFIG_SENSORS_VT1211 is not set +# CONFIG_SENSORS_VT8231 is not set +# CONFIG_SENSORS_W83627EHF is not set +# CONFIG_SENSORS_W83627HF is not set +# CONFIG_SENSORS_W83781D is not set +# CONFIG_SENSORS_W83791D is not set +# CONFIG_SENSORS_W83792D is not set +# CONFIG_SENSORS_W83793 is not set +# CONFIG_SENSORS_W83L785TS is not set +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_CS=m +CONFIG_SERIAL_8250_NR_UARTS=2 +# CONFIG_SERIAL_8250_PCI is not set +CONFIG_SERIAL_8250_RUNTIME_UARTS=2 +CONFIG_SERIAL_CORE=y +CONFIG_SERIAL_CORE_CONSOLE=y +# CONFIG_SERIAL_JSM is not set +# CONFIG_SERIAL_NONSTANDARD is not set +# CONFIG_SERIAL_UARTLITE is not set +# CONFIG_SERIO is not set +# CONFIG_SGI_IOC4 is not set +# CONFIG_SGI_PARTITION is not set +# CONFIG_SHAPER is not set +CONFIG_SHMEM=y +CONFIG_SIGNALFD=y +# CONFIG_SIS190 is not set +# CONFIG_SIS900 is not set +# CONFIG_SK98LIN is not set +# CONFIG_SKGE is not set +# CONFIG_SKY2 is not set +CONFIG_SLAB=y +# CONFIG_SLUB is not set +CONFIG_SLHC=m +# CONFIG_SLIP is not set +# CONFIG_SLOB is not set +CONFIG_SMB_FS=m +# CONFIG_SMB_NLS_DEFAULT is not set +CONFIG_SND=m +# CONFIG_SND_AD1816A is not set +# CONFIG_SND_AD1848 is not set +# CONFIG_SND_AD1889 is not set +# CONFIG_SND_ADLIB is not set +# CONFIG_SND_ALI5451 is not set +# CONFIG_SND_ALS100 is not set +# CONFIG_SND_ALS300 is not set +# CONFIG_SND_ALS4000 is not set +# CONFIG_SND_ATIIXP is not set +# CONFIG_SND_ATIIXP_MODEM is not set +# CONFIG_SND_AU8810 is not set +# CONFIG_SND_AU8820 is not set +# CONFIG_SND_AU8830 is not set +# CONFIG_SND_AZT2320 is not set +# CONFIG_SND_AZT3328 is not set +# CONFIG_SND_BT87X is not set +# CONFIG_SND_CA0106 is not set +# CONFIG_SND_CMI8330 is not set +# CONFIG_SND_CMIPCI is not set +# CONFIG_SND_CS4231 is not set +# CONFIG_SND_CS4232 is not set +# CONFIG_SND_CS4236 is not set +# CONFIG_SND_CS4281 is not set +# CONFIG_SND_CS46XX is not set +# CONFIG_SND_CS5535AUDIO is not set +# CONFIG_SND_DARLA20 is not set +# CONFIG_SND_DARLA24 is not set +# CONFIG_SND_DEBUG is not set +# CONFIG_SND_DT019X is not set +# CONFIG_SND_DUMMY is not set +# CONFIG_SND_DYNAMIC_MINORS is not set +# CONFIG_SND_ECHO3G is not set +# CONFIG_SND_EMU10K1 is not set +# CONFIG_SND_EMU10K1X is not set +# CONFIG_SND_ENS1370 is not set +# CONFIG_SND_ENS1371 is not set +# CONFIG_SND_ES1688 is not set +# CONFIG_SND_ES18XX is not set +# CONFIG_SND_ES1938 is not set +# CONFIG_SND_ES1968 is not set +# CONFIG_SND_ES968 is not set +# CONFIG_SND_FM801 is not set +# CONFIG_SND_GINA20 is not set +# CONFIG_SND_GINA24 is not set +# CONFIG_SND_GUSCLASSIC is not set +# CONFIG_SND_GUSEXTREME is not set +# CONFIG_SND_GUSMAX is not set +# CONFIG_SND_HDA_INTEL is not set +# CONFIG_SND_HDSP is not set +# CONFIG_SND_HDSPM is not set +CONFIG_SND_HWDEP=m +# CONFIG_SND_ICE1712 is not set +# CONFIG_SND_ICE1724 is not set +# CONFIG_SND_INDIGO is not set +# CONFIG_SND_INDIGODJ is not set +# CONFIG_SND_INDIGOIO is not set +# CONFIG_SND_INTEL8X0 is not set +# CONFIG_SND_INTEL8X0M is not set +# CONFIG_SND_INTERWAVE is not set +# CONFIG_SND_INTERWAVE_STB is not set +# CONFIG_SND_KORG1212 is not set +# CONFIG_SND_LAYLA20 is not set +# CONFIG_SND_LAYLA24 is not set +# CONFIG_SND_MAESTRO3 is not set +# CONFIG_SND_MIA is not set +# CONFIG_SND_MIRO is not set +# CONFIG_SND_MIXART is not set +CONFIG_SND_MIXER_OSS=m +# CONFIG_SND_MONA is not set +# CONFIG_SND_MPU401 is not set +# CONFIG_SND_MTPAV is not set +# CONFIG_SND_NM256 is not set +# CONFIG_SND_OPL3SA2 is not set +# CONFIG_SND_OPTI92X_AD1848 is not set +# CONFIG_SND_OPTI92X_CS4231 is not set +# CONFIG_SND_OPTI93X is not set +CONFIG_SND_OSSEMUL=y +CONFIG_SND_PCM=m +CONFIG_SND_PCM_OSS=m +CONFIG_SND_PCM_OSS_PLUGINS=y +# CONFIG_SND_PCXHR is not set +# CONFIG_SND_PDAUDIOCF is not set +CONFIG_SND_RAWMIDI=m +# CONFIG_SND_RIPTIDE is not set +# CONFIG_SND_RME32 is not set +# CONFIG_SND_RME96 is not set +# CONFIG_SND_RME9652 is not set +# CONFIG_SND_RTCTIMER is not set +# CONFIG_SND_SB16 is not set +# CONFIG_SND_SB8 is not set +# CONFIG_SND_SBAWE is not set +# CONFIG_SND_SEQUENCER is not set +# CONFIG_SND_SERIAL_U16550 is not set +# CONFIG_SND_SGALAXY is not set +# CONFIG_SND_SOC is not set +# CONFIG_SND_SONICVIBES is not set +# CONFIG_SND_SSCAPE is not set +# CONFIG_SND_SUPPORT_OLD_API is not set +CONFIG_SND_TIMER=m +# CONFIG_SND_TRIDENT is not set +CONFIG_SND_USB_AUDIO=m +# CONFIG_SND_USB_CAIAQ is not set +# CONFIG_SND_USB_USX2Y is not set +# CONFIG_SND_VERBOSE_PRINTK is not set +CONFIG_SND_VERBOSE_PROCFS=y +# CONFIG_SND_VIA82XX is not set +# CONFIG_SND_VIA82XX_MODEM is not set +# CONFIG_SND_VX222 is not set +# CONFIG_SND_VXPOCKET is not set +# CONFIG_SND_WAVEFRONT is not set +# CONFIG_SND_YMFPCI is not set +# CONFIG_SNI_RM is not set +# CONFIG_SOLARIS_X86_PARTITION is not set +CONFIG_SOUND=m +# CONFIG_SOUND_PRIME is not set +# CONFIG_SPARSEMEM_MANUAL is not set +# CONFIG_SPI is not set +# CONFIG_SPI_MASTER is not set +CONFIG_SPLIT_PTLOCK_CPUS=4 +CONFIG_SQUASHFS=y +# CONFIG_SQUASHFS_EMBEDDED is not set +CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3 +# CONFIG_SQUASHFS_VMALLOC is not set +# CONFIG_SSFDC is not set +CONFIG_STACKTRACE_SUPPORT=y +CONFIG_STANDALONE=y +# CONFIG_STRIP is not set +# CONFIG_SUNDANCE is not set +# CONFIG_SUNGEM is not set +CONFIG_SUNRPC=m +# CONFIG_SUNRPC_BIND34 is not set +CONFIG_SUNRPC_GSS=m +# CONFIG_SUN_PARTITION is not set +CONFIG_SWAP=y +# CONFIG_SYNCLINK_CS is not set +CONFIG_SYN_COOKIES=y +CONFIG_SYSCTL=y +CONFIG_SYSCTL_SYSCALL=y +CONFIG_SYSFS=y +# CONFIG_SYSFS_DEPRECATED is not set +# CONFIG_SYSV68_PARTITION is not set +CONFIG_SYSVIPC=y +# CONFIG_SYSV_FS is not set +# CONFIG_SYS_HYPERVISOR is not set +# CONFIG_TASKSTATS is not set +# CONFIG_TCG_TPM is not set +CONFIG_TCP_CONG_ADVANCED=y +CONFIG_TCP_CONG_BIC=m +CONFIG_TCP_CONG_CUBIC=m +CONFIG_TCP_CONG_HSTCP=m +CONFIG_TCP_CONG_HTCP=m +CONFIG_TCP_CONG_HYBLA=m +CONFIG_TCP_CONG_ILLINOIS=m +CONFIG_TCP_CONG_LP=m +CONFIG_TCP_CONG_SCALABLE=m +CONFIG_TCP_CONG_YEAH=m +CONFIG_TCP_CONG_VEGAS=y +CONFIG_TCP_CONG_VENO=m +CONFIG_TCP_CONG_WESTWOOD=m +# CONFIG_TCP_MD5SIG is not set +CONFIG_TEXTSEARCH=y +CONFIG_TEXTSEARCH_BM=m +CONFIG_TEXTSEARCH_FSM=m +CONFIG_TEXTSEARCH_KMP=m +# CONFIG_TIFM_CORE is not set +# CONFIG_TIGON3 is not set +CONFIG_TIMERFD=y +# CONFIG_TINY_SHMEM is not set +# CONFIG_TIPC is not set +# CONFIG_TLAN is not set +CONFIG_TMD_HERMES=m +CONFIG_TMPFS=y +# CONFIG_TMPFS_POSIX_ACL is not set +# CONFIG_TR is not set +CONFIG_TRACE_IRQFLAGS_SUPPORT=y +CONFIG_TUN=m +CONFIG_UDF_FS=m +CONFIG_UDF_NLS=y +# CONFIG_UFS_FS is not set +# CONFIG_ULTRIX_PARTITION is not set +CONFIG_UNIX=y +CONFIG_UNIX98_PTYS=y +# CONFIG_UNIXWARE_DISKLABEL is not set +CONFIG_USB=m +# CONFIG_USB_ACECAD is not set +CONFIG_USB_ACM=m +# CONFIG_USB_ADUTUX is not set +# CONFIG_USB_AIPTEK is not set +CONFIG_USB_ALI_M5632=y +CONFIG_USB_AN2720=y +# CONFIG_USB_APPLEDISPLAY is not set +# CONFIG_USB_APPLETOUCH is not set +CONFIG_USB_ARCH_HAS_EHCI=y +CONFIG_USB_ARCH_HAS_HCD=y +CONFIG_USB_ARCH_HAS_OHCI=y +CONFIG_USB_ARMLINUX=y +# CONFIG_USB_ATI_REMOTE is not set +# CONFIG_USB_ATI_REMOTE2 is not set +CONFIG_USB_ATM=m +# CONFIG_USB_AUERSWALD is not set +# CONFIG_USB_BANDWIDTH is not set +CONFIG_USB_BELKIN=y +# CONFIG_USB_BERRY_CHARGE is not set +CONFIG_USB_CATC=m +# CONFIG_USB_CXACRU is not set +# CONFIG_USB_CYPRESS_CY7C63 is not set +# CONFIG_USB_CYTHERM is not set +# CONFIG_USB_DABUSB is not set +# CONFIG_USB_DEBUG is not set +# CONFIG_USB_DEVICE_CLASS is not set +CONFIG_USB_DEVICEFS=y +# CONFIG_USB_DSBR is not set +# CONFIG_USB_DYNAMIC_MINORS is not set +# CONFIG_USB_EMI26 is not set +# CONFIG_USB_EMI62 is not set +# CONFIG_USB_EPSON2888 is not set +CONFIG_USB_EZUSB=y +# CONFIG_USB_FTDI_ELAN is not set +# CONFIG_USB_GADGET is not set +CONFIG_USB_HID=m +# CONFIG_HID_FF is not set +# CONFIG_USB_HIDDEV is not set +CONFIG_USB_HIDINPUT=y +# CONFIG_USB_HIDINPUT_POWERBOOK is not set +# CONFIG_USB_IDMOUSE is not set +# CONFIG_USB_IOWARRIOR is not set +# CONFIG_USB_ISP116X_HCD is not set +CONFIG_USB_KAWETH=m +# CONFIG_USB_KBD is not set +# CONFIG_USB_KBTAB is not set +# CONFIG_USB_KC2190 is not set +# CONFIG_USB_KEYSPAN_REMOTE is not set +# CONFIG_USB_LCD is not set +# CONFIG_USB_LD is not set +# CONFIG_USB_LED is not set +# CONFIG_USB_LEGOTOWER is not set +# CONFIG_USB_LIBUSUAL is not set +# CONFIG_USB_MDC800 is not set +# CONFIG_USB_MICROTEK is not set +# CONFIG_USB_MON is not set +# CONFIG_USB_MOUSE is not set +CONFIG_USB_NET_AX8817X=m +CONFIG_USB_NET_CDCETHER=m +CONFIG_USB_NET_CDC_SUBSET=m +CONFIG_USB_NET_DM9601=m +CONFIG_USB_NET_GL620A=m +CONFIG_USB_NET_MCS7830=m +CONFIG_USB_NET_NET1080=m +CONFIG_USB_NET_PLUSB=m +CONFIG_USB_NET_RNDIS_HOST=m +CONFIG_USB_NET_ZAURUS=m +# CONFIG_USB_OHCI_BIG_ENDIAN is not set +# CONFIG_USB_OHCI_HCD is not set +CONFIG_USB_OHCI_LITTLE_ENDIAN=y +# CONFIG_USB_OTG is not set +CONFIG_USB_PEGASUS=m +# CONFIG_USB_PHIDGET is not set +# CONFIG_USB_POWERMATE is not set +CONFIG_USB_PRINTER=m +# CONFIG_USB_RIO500 is not set +CONFIG_USB_RTL8150=m +CONFIG_USB_SERIAL=m +CONFIG_USB_SERIAL_AIRCABLE=m +CONFIG_USB_SERIAL_AIRPRIME=m +CONFIG_USB_SERIAL_ARK3116=m +CONFIG_USB_SERIAL_BELKIN=m +CONFIG_USB_SERIAL_CP2101=m +CONFIG_USB_SERIAL_CYBERJACK=m +CONFIG_USB_SERIAL_CYPRESS_M8=m +# CONFIG_USB_SERIAL_DEBUG is not set +CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m +CONFIG_USB_SERIAL_EDGEPORT=m +CONFIG_USB_SERIAL_EDGEPORT_TI=m +CONFIG_USB_SERIAL_EMPEG=m +CONFIG_USB_SERIAL_FTDI_SIO=m +CONFIG_USB_SERIAL_FUNSOFT=m +CONFIG_USB_SERIAL_GARMIN=m +CONFIG_USB_SERIAL_GENERIC=y +CONFIG_USB_SERIAL_HP4X=m +CONFIG_USB_SERIAL_IPAQ=m +CONFIG_USB_SERIAL_IPW=m +CONFIG_USB_SERIAL_IR=m +CONFIG_USB_SERIAL_KEYSPAN=m +CONFIG_USB_SERIAL_KEYSPAN_MPR=y +CONFIG_USB_SERIAL_KEYSPAN_PDA=m +CONFIG_USB_SERIAL_KEYSPAN_USA18X=y +CONFIG_USB_SERIAL_KEYSPAN_USA19=y +CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y +CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y +CONFIG_USB_SERIAL_KEYSPAN_USA19W=y +CONFIG_USB_SERIAL_KEYSPAN_USA28=y +CONFIG_USB_SERIAL_KEYSPAN_USA28X=y +CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y +CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y +CONFIG_USB_SERIAL_KEYSPAN_USA49W=y +CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y +CONFIG_USB_SERIAL_KLSI=m +CONFIG_USB_SERIAL_KOBIL_SCT=m +CONFIG_USB_SERIAL_MCT_U232=m +CONFIG_USB_SERIAL_MOS7720=m +CONFIG_USB_SERIAL_MOS7840=m +CONFIG_USB_SERIAL_NAVMAN=m +CONFIG_USB_SERIAL_OMNINET=m +CONFIG_USB_SERIAL_OPTION=m +CONFIG_USB_SERIAL_PL2303=m +CONFIG_USB_SERIAL_SAFE=m +CONFIG_USB_SERIAL_SAFE_PADDED=y +CONFIG_USB_SERIAL_SIERRAWIRELESS=m +CONFIG_USB_SERIAL_TI=m +CONFIG_USB_SERIAL_VISOR=m +CONFIG_USB_SERIAL_WHITEHEAT=m +CONFIG_USB_SERIAL_XIRCOM=m +# CONFIG_USB_SISUSBVGA is not set +# CONFIG_USB_SL811_HCD is not set +CONFIG_USB_SPEEDTOUCH=m +CONFIG_USB_STORAGE=m +CONFIG_USB_STORAGE_ALAUDA=y +CONFIG_USB_STORAGE_DATAFAB=y +# CONFIG_USB_STORAGE_DEBUG is not set +CONFIG_USB_STORAGE_DPCM=y +CONFIG_USB_STORAGE_FREECOM=y +CONFIG_USB_STORAGE_JUMPSHOT=y +CONFIG_USB_STORAGE_KARMA=y +# CONFIG_USB_STORAGE_ONETOUCH is not set +CONFIG_USB_STORAGE_SDDR09=y +CONFIG_USB_STORAGE_SDDR55=y +CONFIG_USB_STORAGE_USBAT=y +# CONFIG_USB_TEST is not set +# CONFIG_USB_TOUCHSCREEN is not set +# CONFIG_USB_TRANCEVIBRATOR is not set +CONFIG_USB_UEAGLEATM=m +CONFIG_USB_USBNET=m +CONFIG_USB_USBNET_MII=m +# CONFIG_USB_WACOM is not set +# CONFIG_USB_XPAD is not set +# CONFIG_USB_XUSBATM is not set +CONFIG_USB_YEALINK=m +CONFIG_USB_ZD1201=m +# CONFIG_UTS_NS is not set +CONFIG_VFAT_FS=m +# CONFIG_VIA_VELOCITY is not set +# CONFIG_VIDEO_ADV_DEBUG is not set +# CONFIG_VIDEO_CAFE_CCIC is not set +# CONFIG_VIDEO_CAPTURE_DRIVERS is not set +# CONFIG_VIDEO_CS53L32A is not set +# CONFIG_VIDEO_CX2341X is not set +# CONFIG_VIDEO_CX25840 is not set +# CONFIG_VIDEO_CX88 is not set +CONFIG_VIDEO_DEV=m +# CONFIG_VIDEO_HELPER_CHIPS_AUTO is not set +# CONFIG_VIDEO_HEXIUM_GEMINI is not set +# CONFIG_VIDEO_HEXIUM_ORION is not set +# CONFIG_VIDEO_MSP3400 is not set +# CONFIG_VIDEO_OV7670 is not set +# CONFIG_VIDEO_PVRUSB2 is not set +# CONFIG_VIDEO_SAA5246A is not set +# CONFIG_VIDEO_SAA5249 is not set +# CONFIG_VIDEO_SAA711X is not set +# CONFIG_VIDEO_SAA7127 is not set +# CONFIG_VIDEO_SAA7134 is not set +# CONFIG_VIDEO_TDA9840 is not set +# CONFIG_VIDEO_TEA6415C is not set +# CONFIG_VIDEO_TEA6420 is not set +# CONFIG_VIDEO_TLV320AIC23B is not set +# CONFIG_VIDEO_TVP5150 is not set +# CONFIG_VIDEO_UPD64031A is not set +# CONFIG_VIDEO_UPD64083 is not set +# CONFIG_VIDEO_USBVISION is not set +# CONFIG_VIDEO_V4L1 is not set +CONFIG_VIDEO_V4L1_COMPAT=y +CONFIG_VIDEO_V4L2=y +# CONFIG_VIDEO_VIVI is not set +# CONFIG_VIDEO_WM8739 is not set +# CONFIG_VIDEO_WM8775 is not set +# CONFIG_VITESSE_PHY is not set +CONFIG_VLAN_8021Q=y +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_VT is not set +# CONFIG_VXFS_FS is not set +# CONFIG_W1 is not set +# CONFIG_WAN is not set +# CONFIG_WAN_ROUTER is not set +CONFIG_WATCHDOG=y +# CONFIG_WATCHDOG_NOWAYOUT is not set +# CONFIG_WDTPCI is not set +CONFIG_WIRELESS_EXT=y +CONFIG_WLAN_80211=y +# CONFIG_WLAN_PRE80211 is not set +# CONFIG_WR_PPMC is not set +# CONFIG_X25 is not set +CONFIG_XFRM=y +# CONFIG_XFRM_MIGRATE is not set +# CONFIG_XFRM_SUB_POLICY is not set +CONFIG_XFRM_USER=m +CONFIG_XFS_FS=m +# CONFIG_XFS_POSIX_ACL is not set +# CONFIG_XFS_QUOTA is not set +# CONFIG_XFS_RT is not set +# CONFIG_XFS_SECURITY is not set +# CONFIG_YAFFS_FS is not set +# CONFIG_YAM is not set +# CONFIG_YELLOWFIN is not set +CONFIG_YENTA=m +# CONFIG_YENTA_O2 is not set +# CONFIG_YENTA_RICOH is not set +# CONFIG_YENTA_TI is not set +# CONFIG_YENTA_TOSHIBA is not set +CONFIG_ZD1211RW=m +# CONFIG_ZD1211RW_DEBUG is not set +CONFIG_ZISOFS=y +CONFIG_ZISOFS_FS=m +CONFIG_ZLIB_DEFLATE=y +CONFIG_ZLIB_INFLATE=y +CONFIG_ZONE_DMA=y +CONFIG_ZONE_DMA_FLAG=1 diff --git a/target/linux/generic-2.6/patches-2.6.22/001-squashfs.patch b/target/linux/generic-2.6/patches-2.6.22/001-squashfs.patch new file mode 100644 index 0000000000..38306841d3 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/001-squashfs.patch @@ -0,0 +1,4168 @@ +diff -urN linux-2.6.21.1.old/fs/Kconfig linux-2.6.21.1.dev/fs/Kconfig +--- linux-2.6.21.1.old/fs/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/fs/Kconfig 2007-05-26 19:00:37.121351760 +0200 +@@ -1367,6 +1367,71 @@ + + If unsure, say N. + ++config SQUASHFS ++ tristate "SquashFS 3.0 - Squashed file system support" ++ select ZLIB_INFLATE ++ help ++ Saying Y here includes support for SquashFS 3.0 (a Compressed Read-Only File ++ System). Squashfs is a highly compressed read-only filesystem for Linux. ++ It uses zlib compression to compress both files, inodes and directories. ++ Inodes in the system are very small and all blocks are packed to minimise ++ data overhead. Block sizes greater than 4K are supported up to a maximum of 64K. ++ SquashFS 3.0 supports 64 bit filesystems and files (larger than 4GB), full ++ uid/gid information, hard links and timestamps. ++ ++ Squashfs is intended for general read-only filesystem use, for archival ++ use (i.e. in cases where a .tar.gz file may be used), and in embedded ++ systems where low overhead is needed. Further information and filesystem tools ++ are available from http://squashfs.sourceforge.net. ++ ++ If you want to compile this as a module ( = code which can be ++ inserted in and removed from the running kernel whenever you want), ++ say M here and read <file:Documentation/modules.txt>. The module ++ will be called squashfs. Note that the root file system (the one ++ containing the directory /) cannot be compiled as a module. ++ ++ If unsure, say N. ++ ++config SQUASHFS_EMBEDDED ++ ++ bool "Additional options for memory-constrained systems" ++ depends on SQUASHFS ++ default n ++ help ++ Saying Y here allows you to specify cache sizes and how Squashfs ++ allocates memory. This is only intended for memory constrained ++ systems. ++ ++ If unsure, say N. ++ ++config SQUASHFS_FRAGMENT_CACHE_SIZE ++ int "Number of fragments cached" if SQUASHFS_EMBEDDED ++ depends on SQUASHFS ++ default "3" ++ help ++ By default SquashFS caches the last 3 fragments read from ++ the filesystem. Increasing this amount may mean SquashFS ++ has to re-read fragments less often from disk, at the expense ++ of extra system memory. Decreasing this amount will mean ++ SquashFS uses less memory at the expense of extra reads from disk. ++ ++ Note there must be at least one cached fragment. Anything ++ much more than three will probably not make much difference. ++ ++config SQUASHFS_VMALLOC ++ bool "Use Vmalloc rather than Kmalloc" if SQUASHFS_EMBEDDED ++ depends on SQUASHFS ++ default n ++ help ++ By default SquashFS uses kmalloc to obtain fragment cache memory. ++ Kmalloc memory is the standard kernel allocator, but it can fail ++ on memory constrained systems. Because of the way Vmalloc works, ++ Vmalloc can succeed when kmalloc fails. Specifying this option ++ will make SquashFS always use Vmalloc to allocate the ++ fragment cache memory. ++ ++ If unsure, say N. ++ + config VXFS_FS + tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" + depends on BLOCK +diff -urN linux-2.6.21.1.old/fs/Makefile linux-2.6.21.1.dev/fs/Makefile +--- linux-2.6.21.1.old/fs/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/fs/Makefile 2007-05-26 19:00:37.121351760 +0200 +@@ -72,6 +72,7 @@ + obj-$(CONFIG_JBD2) += jbd2/ + obj-$(CONFIG_EXT2_FS) += ext2/ + obj-$(CONFIG_CRAMFS) += cramfs/ ++obj-$(CONFIG_SQUASHFS) += squashfs/ + obj-$(CONFIG_RAMFS) += ramfs/ + obj-$(CONFIG_HUGETLBFS) += hugetlbfs/ + obj-$(CONFIG_CODA_FS) += coda/ +diff -urN linux-2.6.21.1.old/fs/squashfs/inode.c linux-2.6.21.1.dev/fs/squashfs/inode.c +--- linux-2.6.21.1.old/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/squashfs/inode.c 2007-05-26 19:00:37.123351456 +0200 +@@ -0,0 +1,2122 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher <phillip@lougher.org.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * inode.c ++ */ ++ ++#include <linux/types.h> ++#include <linux/squashfs_fs.h> ++#include <linux/module.h> ++#include <linux/errno.h> ++#include <linux/slab.h> ++#include <linux/fs.h> ++#include <linux/smp_lock.h> ++#include <linux/slab.h> ++#include <linux/squashfs_fs_sb.h> ++#include <linux/squashfs_fs_i.h> ++#include <linux/buffer_head.h> ++#include <linux/vfs.h> ++#include <linux/init.h> ++#include <linux/dcache.h> ++#include <linux/wait.h> ++#include <linux/zlib.h> ++#include <linux/blkdev.h> ++#include <linux/vmalloc.h> ++#include <asm/uaccess.h> ++#include <asm/semaphore.h> ++ ++#include "squashfs.h" ++ ++static void squashfs_put_super(struct super_block *); ++static int squashfs_statfs(struct dentry *, struct kstatfs *); ++static int squashfs_symlink_readpage(struct file *file, struct page *page); ++static int squashfs_readpage(struct file *file, struct page *page); ++static int squashfs_readpage4K(struct file *file, struct page *page); ++static int squashfs_readdir(struct file *, void *, filldir_t); ++static struct inode *squashfs_alloc_inode(struct super_block *sb); ++static void squashfs_destroy_inode(struct inode *inode); ++static int init_inodecache(void); ++static void destroy_inodecache(void); ++static struct dentry *squashfs_lookup(struct inode *, struct dentry *, ++ struct nameidata *); ++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode); ++static long long read_blocklist(struct inode *inode, int index, ++ int readahead_blks, char *block_list, ++ unsigned short **block_p, unsigned int *bsize); ++static int squashfs_get_sb(struct file_system_type *, int, ++ const char *, void *, struct vfsmount *); ++ ++ ++static z_stream stream; ++ ++static struct file_system_type squashfs_fs_type = { ++ .owner = THIS_MODULE, ++ .name = "squashfs", ++ .get_sb = squashfs_get_sb, ++ .kill_sb = kill_block_super, ++ .fs_flags = FS_REQUIRES_DEV ++}; ++ ++static unsigned char squashfs_filetype_table[] = { ++ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK ++}; ++ ++static struct super_operations squashfs_ops = { ++ .alloc_inode = squashfs_alloc_inode, ++ .destroy_inode = squashfs_destroy_inode, ++ .statfs = squashfs_statfs, ++ .put_super = squashfs_put_super, ++}; ++ ++SQSH_EXTERN struct address_space_operations squashfs_symlink_aops = { ++ .readpage = squashfs_symlink_readpage ++}; ++ ++SQSH_EXTERN struct address_space_operations squashfs_aops = { ++ .readpage = squashfs_readpage ++}; ++ ++SQSH_EXTERN struct address_space_operations squashfs_aops_4K = { ++ .readpage = squashfs_readpage4K ++}; ++ ++static struct file_operations squashfs_dir_ops = { ++ .read = generic_read_dir, ++ .readdir = squashfs_readdir ++}; ++ ++SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = { ++ .lookup = squashfs_lookup ++}; ++ ++ ++static struct buffer_head *get_block_length(struct super_block *s, ++ int *cur_index, int *offset, int *c_byte) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ unsigned short temp; ++ struct buffer_head *bh; ++ ++ if (!(bh = sb_bread(s, *cur_index))) ++ goto out; ++ ++ if (msblk->devblksize - *offset == 1) { ++ if (msblk->swap) ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ else ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ brelse(bh); ++ if (!(bh = sb_bread(s, ++(*cur_index)))) ++ goto out; ++ if (msblk->swap) ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ bh->b_data); ++ else ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ bh->b_data); ++ *c_byte = temp; ++ *offset = 1; ++ } else { ++ if (msblk->swap) { ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset + 1)); ++ } else { ++ ((unsigned char *) &temp)[0] = *((unsigned char *) ++ (bh->b_data + *offset)); ++ ((unsigned char *) &temp)[1] = *((unsigned char *) ++ (bh->b_data + *offset + 1)); ++ } ++ *c_byte = temp; ++ *offset += 2; ++ } ++ ++ if (SQUASHFS_CHECK_DATA(msblk->sblk.flags)) { ++ if (*offset == msblk->devblksize) { ++ brelse(bh); ++ if (!(bh = sb_bread(s, ++(*cur_index)))) ++ goto out; ++ *offset = 0; ++ } ++ if (*((unsigned char *) (bh->b_data + *offset)) != ++ SQUASHFS_MARKER_BYTE) { ++ ERROR("Metadata block marker corrupt @ %x\n", ++ *cur_index); ++ brelse(bh); ++ goto out; ++ } ++ (*offset)++; ++ } ++ return bh; ++ ++out: ++ return NULL; ++} ++ ++ ++SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer, ++ long long index, unsigned int length, ++ long long *next_index) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >> ++ msblk->devblksize_log2) + 2]; ++ unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1); ++ unsigned int cur_index = index >> msblk->devblksize_log2; ++ int bytes, avail_bytes, b = 0, k; ++ char *c_buffer; ++ unsigned int compressed; ++ unsigned int c_byte = length; ++ ++ if (c_byte) { ++ bytes = msblk->devblksize - offset; ++ compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte); ++ c_buffer = compressed ? msblk->read_data : buffer; ++ c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte); ++ ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); ++ ++ if (!(bh[0] = sb_getblk(s, cur_index))) ++ goto block_release; ++ ++ for (b = 1; bytes < c_byte; b++) { ++ if (!(bh[b] = sb_getblk(s, ++cur_index))) ++ goto block_release; ++ bytes += msblk->devblksize; ++ } ++ ll_rw_block(READ, b, bh); ++ } else { ++ if (!(bh[0] = get_block_length(s, &cur_index, &offset, ++ &c_byte))) ++ goto read_failure; ++ ++ bytes = msblk->devblksize - offset; ++ compressed = SQUASHFS_COMPRESSED(c_byte); ++ c_buffer = compressed ? msblk->read_data : buffer; ++ c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte); ++ ++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed ++ ? "" : "un", (unsigned int) c_byte); ++ ++ for (b = 1; bytes < c_byte; b++) { ++ if (!(bh[b] = sb_getblk(s, ++cur_index))) ++ goto block_release; ++ bytes += msblk->devblksize; ++ } ++ ll_rw_block(READ, b - 1, bh + 1); ++ } ++ ++ if (compressed) ++ down(&msblk->read_data_mutex); ++ ++ for (bytes = 0, k = 0; k < b; k++) { ++ avail_bytes = (c_byte - bytes) > (msblk->devblksize - offset) ? ++ msblk->devblksize - offset : ++ c_byte - bytes; ++ wait_on_buffer(bh[k]); ++ if (!buffer_uptodate(bh[k])) ++ goto block_release; ++ memcpy(c_buffer + bytes, bh[k]->b_data + offset, avail_bytes); ++ bytes += avail_bytes; ++ offset = 0; ++ brelse(bh[k]); ++ } ++ ++ /* ++ * uncompress block ++ */ ++ if (compressed) { ++ int zlib_err; ++ ++ stream.next_in = c_buffer; ++ stream.avail_in = c_byte; ++ stream.next_out = buffer; ++ stream.avail_out = msblk->read_size; ++ ++ if (((zlib_err = zlib_inflateInit(&stream)) != Z_OK) || ++ ((zlib_err = zlib_inflate(&stream, Z_FINISH)) ++ != Z_STREAM_END) || ((zlib_err = ++ zlib_inflateEnd(&stream)) != Z_OK)) { ++ ERROR("zlib_fs returned unexpected result 0x%x\n", ++ zlib_err); ++ bytes = 0; ++ } else ++ bytes = stream.total_out; ++ ++ up(&msblk->read_data_mutex); ++ } ++ ++ if (next_index) ++ *next_index = index + c_byte + (length ? 0 : ++ (SQUASHFS_CHECK_DATA(msblk->sblk.flags) ++ ? 3 : 2)); ++ return bytes; ++ ++block_release: ++ while (--b >= 0) ++ brelse(bh[b]); ++ ++read_failure: ++ ERROR("sb_bread failed reading block 0x%x\n", cur_index); ++ return 0; ++} ++ ++ ++SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, char *buffer, ++ long long block, unsigned int offset, ++ int length, long long *next_block, ++ unsigned int *next_offset) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ int n, i, bytes, return_length = length; ++ long long next_index; ++ ++ TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset); ++ ++ while ( 1 ) { ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ if (msblk->block_cache[i].block == block) ++ break; ++ ++ down(&msblk->block_cache_mutex); ++ ++ if (i == SQUASHFS_CACHED_BLKS) { ++ /* read inode header block */ ++ for (i = msblk->next_cache, n = SQUASHFS_CACHED_BLKS; ++ n ; n --, i = (i + 1) % ++ SQUASHFS_CACHED_BLKS) ++ if (msblk->block_cache[i].block != ++ SQUASHFS_USED_BLK) ++ break; ++ ++ if (n == 0) { ++ wait_queue_t wait; ++ ++ init_waitqueue_entry(&wait, current); ++ add_wait_queue(&msblk->waitq, &wait); ++ set_current_state(TASK_UNINTERRUPTIBLE); ++ up(&msblk->block_cache_mutex); ++ schedule(); ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&msblk->waitq, &wait); ++ continue; ++ } ++ msblk->next_cache = (i + 1) % SQUASHFS_CACHED_BLKS; ++ ++ if (msblk->block_cache[i].block == ++ SQUASHFS_INVALID_BLK) { ++ if (!(msblk->block_cache[i].data = ++ kmalloc(SQUASHFS_METADATA_SIZE, ++ GFP_KERNEL))) { ++ ERROR("Failed to allocate cache" ++ "block\n"); ++ up(&msblk->block_cache_mutex); ++ goto out; ++ } ++ } ++ ++ msblk->block_cache[i].block = SQUASHFS_USED_BLK; ++ up(&msblk->block_cache_mutex); ++ ++ if (!(msblk->block_cache[i].length = ++ squashfs_read_data(s, ++ msblk->block_cache[i].data, ++ block, 0, &next_index))) { ++ ERROR("Unable to read cache block [%llx:%x]\n", ++ block, offset); ++ goto out; ++ } ++ ++ down(&msblk->block_cache_mutex); ++ wake_up(&msblk->waitq); ++ msblk->block_cache[i].block = block; ++ msblk->block_cache[i].next_index = next_index; ++ TRACE("Read cache block [%llx:%x]\n", block, offset); ++ } ++ ++ if (msblk->block_cache[i].block != block) { ++ up(&msblk->block_cache_mutex); ++ continue; ++ } ++ ++ if ((bytes = msblk->block_cache[i].length - offset) >= length) { ++ if (buffer) ++ memcpy(buffer, msblk->block_cache[i].data + ++ offset, length); ++ if (msblk->block_cache[i].length - offset == length) { ++ *next_block = msblk->block_cache[i].next_index; ++ *next_offset = 0; ++ } else { ++ *next_block = block; ++ *next_offset = offset + length; ++ } ++ up(&msblk->block_cache_mutex); ++ goto finish; ++ } else { ++ if (buffer) { ++ memcpy(buffer, msblk->block_cache[i].data + ++ offset, bytes); ++ buffer += bytes; ++ } ++ block = msblk->block_cache[i].next_index; ++ up(&msblk->block_cache_mutex); ++ length -= bytes; ++ offset = 0; ++ } ++ } ++ ++finish: ++ return return_length; ++out: ++ return 0; ++} ++ ++ ++static int get_fragment_location(struct super_block *s, unsigned int fragment, ++ long long *fragment_start_block, ++ unsigned int *fragment_size) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ long long start_block = ++ msblk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)]; ++ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment); ++ struct squashfs_fragment_entry fragment_entry; ++ ++ if (msblk->swap) { ++ struct squashfs_fragment_entry sfragment_entry; ++ ++ if (!squashfs_get_cached_block(s, (char *) &sfragment_entry, ++ start_block, offset, ++ sizeof(sfragment_entry), &start_block, ++ &offset)) ++ goto out; ++ SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) &fragment_entry, ++ start_block, offset, ++ sizeof(fragment_entry), &start_block, ++ &offset)) ++ goto out; ++ ++ *fragment_start_block = fragment_entry.start_block; ++ *fragment_size = fragment_entry.size; ++ ++ return 1; ++ ++out: ++ return 0; ++} ++ ++ ++SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk, struct ++ squashfs_fragment_cache *fragment) ++{ ++ down(&msblk->fragment_mutex); ++ fragment->locked --; ++ wake_up(&msblk->fragment_wait_queue); ++ up(&msblk->fragment_mutex); ++} ++ ++ ++SQSH_EXTERN struct squashfs_fragment_cache *get_cached_fragment(struct super_block ++ *s, long long start_block, ++ int length) ++{ ++ int i, n; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ ++ while ( 1 ) { ++ down(&msblk->fragment_mutex); ++ ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS && ++ msblk->fragment[i].block != start_block; i++); ++ ++ if (i == SQUASHFS_CACHED_FRAGMENTS) { ++ for (i = msblk->next_fragment, n = ++ SQUASHFS_CACHED_FRAGMENTS; n && ++ msblk->fragment[i].locked; n--, i = (i + 1) % ++ SQUASHFS_CACHED_FRAGMENTS); ++ ++ if (n == 0) { ++ wait_queue_t wait; ++ ++ init_waitqueue_entry(&wait, current); ++ add_wait_queue(&msblk->fragment_wait_queue, ++ &wait); ++ set_current_state(TASK_UNINTERRUPTIBLE); ++ up(&msblk->fragment_mutex); ++ schedule(); ++ set_current_state(TASK_RUNNING); ++ remove_wait_queue(&msblk->fragment_wait_queue, ++ &wait); ++ continue; ++ } ++ msblk->next_fragment = (msblk->next_fragment + 1) % ++ SQUASHFS_CACHED_FRAGMENTS; ++ ++ if (msblk->fragment[i].data == NULL) ++ if (!(msblk->fragment[i].data = SQUASHFS_ALLOC ++ (SQUASHFS_FILE_MAX_SIZE))) { ++ ERROR("Failed to allocate fragment " ++ "cache block\n"); ++ up(&msblk->fragment_mutex); ++ goto out; ++ } ++ ++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; ++ msblk->fragment[i].locked = 1; ++ up(&msblk->fragment_mutex); ++ ++ if (!(msblk->fragment[i].length = squashfs_read_data(s, ++ msblk->fragment[i].data, ++ start_block, length, NULL))) { ++ ERROR("Unable to read fragment cache block " ++ "[%llx]\n", start_block); ++ msblk->fragment[i].locked = 0; ++ goto out; ++ } ++ ++ msblk->fragment[i].block = start_block; ++ TRACE("New fragment %d, start block %lld, locked %d\n", ++ i, msblk->fragment[i].block, ++ msblk->fragment[i].locked); ++ break; ++ } ++ ++ msblk->fragment[i].locked++; ++ up(&msblk->fragment_mutex); ++ TRACE("Got fragment %d, start block %lld, locked %d\n", i, ++ msblk->fragment[i].block, ++ msblk->fragment[i].locked); ++ break; ++ } ++ ++ return &msblk->fragment[i]; ++ ++out: ++ return NULL; ++} ++ ++ ++static struct inode *squashfs_new_inode(struct super_block *s, ++ struct squashfs_base_inode_header *inodeb) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct inode *i = new_inode(s); ++ ++ if (i) { ++ i->i_ino = inodeb->inode_number; ++ i->i_mtime.tv_sec = inodeb->mtime; ++ i->i_atime.tv_sec = inodeb->mtime; ++ i->i_ctime.tv_sec = inodeb->mtime; ++ i->i_uid = msblk->uid[inodeb->uid]; ++ i->i_mode = inodeb->mode; ++ i->i_size = 0; ++ if (inodeb->guid == SQUASHFS_GUIDS) ++ i->i_gid = i->i_uid; ++ else ++ i->i_gid = msblk->guid[inodeb->guid]; ++ } ++ ++ return i; ++} ++ ++ ++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode) ++{ ++ struct inode *i; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long block = SQUASHFS_INODE_BLK(inode) + ++ sblk->inode_table_start; ++ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); ++ long long next_block; ++ unsigned int next_offset; ++ union squashfs_inode_header id, sid; ++ struct squashfs_base_inode_header *inodeb = &id.base, ++ *sinodeb = &sid.base; ++ ++ TRACE("Entered squashfs_iget\n"); ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) sinodeb, block, ++ offset, sizeof(*sinodeb), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_BASE_INODE_HEADER(inodeb, sinodeb, ++ sizeof(*sinodeb)); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) inodeb, block, ++ offset, sizeof(*inodeb), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ switch(inodeb->inode_type) { ++ case SQUASHFS_FILE_TYPE: { ++ unsigned int frag_size; ++ long long frag_blk; ++ struct squashfs_reg_inode_header *inodep = &id.reg; ++ struct squashfs_reg_inode_header *sinodep = &sid.reg; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_REG_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG && ++ !get_fragment_location(s, ++ inodep->fragment, &frag_blk, &frag_size)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = 1; ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ if (sblk->block_size > 4096) ++ i->i_data.a_ops = &squashfs_aops; ++ else ++ i->i_data.a_ops = &squashfs_aops_4K; ++ ++ TRACE("File inode %x:%x, start_block %llx, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_LREG_TYPE: { ++ unsigned int frag_size; ++ long long frag_blk; ++ struct squashfs_lreg_inode_header *inodep = &id.lreg; ++ struct squashfs_lreg_inode_header *sinodep = &sid.lreg; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LREG_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG && ++ !get_fragment_location(s, ++ inodep->fragment, &frag_blk, &frag_size)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ if (sblk->block_size > 4096) ++ i->i_data.a_ops = &squashfs_aops; ++ else ++ i->i_data.a_ops = &squashfs_aops_4K; ++ ++ TRACE("File inode %x:%x, start_block %llx, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_DIR_TYPE: { ++ struct squashfs_dir_inode_header *inodep = &id.dir; ++ struct squashfs_dir_inode_header *sinodep = &sid.dir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DIR_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops; ++ i->i_fop = &squashfs_dir_ops; ++ i->i_mode |= S_IFDIR; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = 0; ++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; ++ ++ TRACE("Directory inode %x:%x, start_block %x, offset " ++ "%x\n", SQUASHFS_INODE_BLK(inode), ++ offset, inodep->start_block, ++ inodep->offset); ++ break; ++ } ++ case SQUASHFS_LDIR_TYPE: { ++ struct squashfs_ldir_inode_header *inodep = &id.ldir; ++ struct squashfs_ldir_inode_header *sinodep = &sid.ldir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LDIR_INODE_HEADER(inodep, ++ sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops; ++ i->i_fop = &squashfs_dir_ops; ++ i->i_mode |= S_IFDIR; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_start = next_block; ++ SQUASHFS_I(i)->u.s2.directory_index_offset = ++ next_offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = ++ inodep->i_count; ++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; ++ ++ TRACE("Long directory inode %x:%x, start_block %x, " ++ "offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, inodep->offset); ++ break; ++ } ++ case SQUASHFS_SYMLINK_TYPE: { ++ struct squashfs_symlink_inode_header *inodep = ++ &id.symlink; ++ struct squashfs_symlink_inode_header *sinodep = ++ &sid.symlink; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER(inodep, ++ sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_size = inodep->symlink_size; ++ i->i_op = &page_symlink_inode_operations; ++ i->i_data.a_ops = &squashfs_symlink_aops; ++ i->i_mode |= S_IFLNK; ++ SQUASHFS_I(i)->start_block = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ ++ TRACE("Symbolic link inode %x:%x, start_block %llx, " ++ "offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ next_block, next_offset); ++ break; ++ } ++ case SQUASHFS_BLKDEV_TYPE: ++ case SQUASHFS_CHRDEV_TYPE: { ++ struct squashfs_dev_inode_header *inodep = &id.dev; ++ struct squashfs_dev_inode_header *sinodep = &sid.dev; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DEV_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if ((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_mode |= (inodeb->inode_type == ++ SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : ++ S_IFBLK; ++ init_special_inode(i, i->i_mode, ++ old_decode_dev(inodep->rdev)); ++ ++ TRACE("Device inode %x:%x, rdev %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->rdev); ++ break; ++ } ++ case SQUASHFS_FIFO_TYPE: ++ case SQUASHFS_SOCKET_TYPE: { ++ struct squashfs_ipc_inode_header *inodep = &id.ipc; ++ struct squashfs_ipc_inode_header *sinodep = &sid.ipc; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_IPC_INODE_HEADER(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if ((i = squashfs_new_inode(s, inodeb)) == NULL) ++ goto failed_read1; ++ ++ i->i_nlink = inodep->nlink; ++ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE) ++ ? S_IFIFO : S_IFSOCK; ++ init_special_inode(i, i->i_mode, 0); ++ break; ++ } ++ default: ++ ERROR("Unknown inode type %d in squashfs_iget!\n", ++ inodeb->inode_type); ++ goto failed_read1; ++ } ++ ++ insert_inode_hash(i); ++ return i; ++ ++failed_read: ++ ERROR("Unable to read inode [%llx:%x]\n", block, offset); ++ ++failed_read1: ++ return NULL; ++} ++ ++ ++static int read_fragment_index_table(struct super_block *s) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ /* Allocate fragment index table */ ++ if (!(msblk->fragment_index = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES ++ (sblk->fragments), GFP_KERNEL))) { ++ ERROR("Failed to allocate uid/gid table\n"); ++ return 0; ++ } ++ ++ if (SQUASHFS_FRAGMENT_INDEX_BYTES(sblk->fragments) && ++ !squashfs_read_data(s, (char *) ++ msblk->fragment_index, ++ sblk->fragment_table_start, ++ SQUASHFS_FRAGMENT_INDEX_BYTES ++ (sblk->fragments) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read fragment index table\n"); ++ return 0; ++ } ++ ++ if (msblk->swap) { ++ int i; ++ long long fragment; ++ ++ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sblk->fragments); ++ i++) { ++ SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment), ++ &msblk->fragment_index[i], 1); ++ msblk->fragment_index[i] = fragment; ++ } ++ } ++ ++ return 1; ++} ++ ++ ++static int supported_squashfs_filesystem(struct squashfs_sb_info *msblk, int silent) ++{ ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ msblk->iget = squashfs_iget; ++ msblk->read_blocklist = read_blocklist; ++ msblk->read_fragment_index_table = read_fragment_index_table; ++ ++ if (sblk->s_major == 1) { ++ if (!squashfs_1_0_supported(msblk)) { ++ SERROR("Major/Minor mismatch, Squashfs 1.0 filesystems " ++ "are unsupported\n"); ++ SERROR("Please recompile with " ++ "Squashfs 1.0 support enabled\n"); ++ return 0; ++ } ++ } else if (sblk->s_major == 2) { ++ if (!squashfs_2_0_supported(msblk)) { ++ SERROR("Major/Minor mismatch, Squashfs 2.0 filesystems " ++ "are unsupported\n"); ++ SERROR("Please recompile with " ++ "Squashfs 2.0 support enabled\n"); ++ return 0; ++ } ++ } else if(sblk->s_major != SQUASHFS_MAJOR || sblk->s_minor > ++ SQUASHFS_MINOR) { ++ SERROR("Major/Minor mismatch, trying to mount newer %d.%d " ++ "filesystem\n", sblk->s_major, sblk->s_minor); ++ SERROR("Please update your kernel\n"); ++ return 0; ++ } ++ ++ return 1; ++} ++ ++ ++static int squashfs_fill_super(struct super_block *s, void *data, int silent) ++{ ++ struct squashfs_sb_info *msblk; ++ struct squashfs_super_block *sblk; ++ int i; ++ char b[BDEVNAME_SIZE]; ++ struct inode *root; ++ ++ TRACE("Entered squashfs_read_superblock\n"); ++ ++ if (!(s->s_fs_info = kmalloc(sizeof(struct squashfs_sb_info), ++ GFP_KERNEL))) { ++ ERROR("Failed to allocate superblock\n"); ++ goto failure; ++ } ++ memset(s->s_fs_info, 0, sizeof(struct squashfs_sb_info)); ++ msblk = s->s_fs_info; ++ sblk = &msblk->sblk; ++ ++ msblk->devblksize = sb_min_blocksize(s, BLOCK_SIZE); ++ msblk->devblksize_log2 = ffz(~msblk->devblksize); ++ ++ init_MUTEX(&msblk->read_data_mutex); ++ init_MUTEX(&msblk->read_page_mutex); ++ init_MUTEX(&msblk->block_cache_mutex); ++ init_MUTEX(&msblk->fragment_mutex); ++ init_MUTEX(&msblk->meta_index_mutex); ++ ++ init_waitqueue_head(&msblk->waitq); ++ init_waitqueue_head(&msblk->fragment_wait_queue); ++ ++ if (!squashfs_read_data(s, (char *) sblk, SQUASHFS_START, ++ sizeof(struct squashfs_super_block) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ SERROR("unable to read superblock\n"); ++ goto failed_mount; ++ } ++ ++ /* Check it is a SQUASHFS superblock */ ++ msblk->swap = 0; ++ if ((s->s_magic = sblk->s_magic) != SQUASHFS_MAGIC) { ++ if (sblk->s_magic == SQUASHFS_MAGIC_SWAP) { ++ struct squashfs_super_block ssblk; ++ ++ WARNING("Mounting a different endian SQUASHFS " ++ "filesystem on %s\n", bdevname(s->s_bdev, b)); ++ ++ SQUASHFS_SWAP_SUPER_BLOCK(&ssblk, sblk); ++ memcpy(sblk, &ssblk, sizeof(struct squashfs_super_block)); ++ msblk->swap = 1; ++ } else { ++ SERROR("Can't find a SQUASHFS superblock on %s\n", ++ bdevname(s->s_bdev, b)); ++ goto failed_mount; ++ } ++ } ++ ++ /* Check the MAJOR & MINOR versions */ ++ if(!supported_squashfs_filesystem(msblk, silent)) ++ goto failed_mount; ++ ++ TRACE("Found valid superblock on %s\n", bdevname(s->s_bdev, b)); ++ TRACE("Inodes are %scompressed\n", ++ SQUASHFS_UNCOMPRESSED_INODES ++ (sblk->flags) ? "un" : ""); ++ TRACE("Data is %scompressed\n", ++ SQUASHFS_UNCOMPRESSED_DATA(sblk->flags) ++ ? "un" : ""); ++ TRACE("Check data is %s present in the filesystem\n", ++ SQUASHFS_CHECK_DATA(sblk->flags) ? ++ "" : "not"); ++ TRACE("Filesystem size %lld bytes\n", sblk->bytes_used); ++ TRACE("Block size %d\n", sblk->block_size); ++ TRACE("Number of inodes %d\n", sblk->inodes); ++ if (sblk->s_major > 1) ++ TRACE("Number of fragments %d\n", sblk->fragments); ++ TRACE("Number of uids %d\n", sblk->no_uids); ++ TRACE("Number of gids %d\n", sblk->no_guids); ++ TRACE("sblk->inode_table_start %llx\n", sblk->inode_table_start); ++ TRACE("sblk->directory_table_start %llx\n", sblk->directory_table_start); ++ if (sblk->s_major > 1) ++ TRACE("sblk->fragment_table_start %llx\n", ++ sblk->fragment_table_start); ++ TRACE("sblk->uid_start %llx\n", sblk->uid_start); ++ ++ s->s_flags |= MS_RDONLY; ++ s->s_op = &squashfs_ops; ++ ++ /* Init inode_table block pointer array */ ++ if (!(msblk->block_cache = kmalloc(sizeof(struct squashfs_cache) * ++ SQUASHFS_CACHED_BLKS, GFP_KERNEL))) { ++ ERROR("Failed to allocate block cache\n"); ++ goto failed_mount; ++ } ++ ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK; ++ ++ msblk->next_cache = 0; ++ ++ /* Allocate read_data block */ ++ msblk->read_size = (sblk->block_size < SQUASHFS_METADATA_SIZE) ? ++ SQUASHFS_METADATA_SIZE : ++ sblk->block_size; ++ ++ if (!(msblk->read_data = kmalloc(msblk->read_size, GFP_KERNEL))) { ++ ERROR("Failed to allocate read_data block\n"); ++ goto failed_mount; ++ } ++ ++ /* Allocate read_page block */ ++ if (!(msblk->read_page = kmalloc(sblk->block_size, GFP_KERNEL))) { ++ ERROR("Failed to allocate read_page block\n"); ++ goto failed_mount; ++ } ++ ++ /* Allocate uid and gid tables */ ++ if (!(msblk->uid = kmalloc((sblk->no_uids + sblk->no_guids) * ++ sizeof(unsigned int), GFP_KERNEL))) { ++ ERROR("Failed to allocate uid/gid table\n"); ++ goto failed_mount; ++ } ++ msblk->guid = msblk->uid + sblk->no_uids; ++ ++ if (msblk->swap) { ++ unsigned int suid[sblk->no_uids + sblk->no_guids]; ++ ++ if (!squashfs_read_data(s, (char *) &suid, sblk->uid_start, ++ ((sblk->no_uids + sblk->no_guids) * ++ sizeof(unsigned int)) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read uid/gid table\n"); ++ goto failed_mount; ++ } ++ ++ SQUASHFS_SWAP_DATA(msblk->uid, suid, (sblk->no_uids + ++ sblk->no_guids), (sizeof(unsigned int) * 8)); ++ } else ++ if (!squashfs_read_data(s, (char *) msblk->uid, sblk->uid_start, ++ ((sblk->no_uids + sblk->no_guids) * ++ sizeof(unsigned int)) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read uid/gid table\n"); ++ goto failed_mount; ++ } ++ ++ ++ if (sblk->s_major == 1 && squashfs_1_0_supported(msblk)) ++ goto allocate_root; ++ ++ if (!(msblk->fragment = kmalloc(sizeof(struct squashfs_fragment_cache) * ++ SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) { ++ ERROR("Failed to allocate fragment block cache\n"); ++ goto failed_mount; ++ } ++ ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) { ++ msblk->fragment[i].locked = 0; ++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; ++ msblk->fragment[i].data = NULL; ++ } ++ ++ msblk->next_fragment = 0; ++ ++ /* Allocate fragment index table */ ++ if (msblk->read_fragment_index_table(s) == 0) ++ goto failed_mount; ++ ++allocate_root: ++ if ((root = (msblk->iget)(s, sblk->root_inode)) == NULL) ++ goto failed_mount; ++ ++ if ((s->s_root = d_alloc_root(root)) == NULL) { ++ ERROR("Root inode create failed\n"); ++ iput(root); ++ goto failed_mount; ++ } ++ ++ TRACE("Leaving squashfs_read_super\n"); ++ return 0; ++ ++failed_mount: ++ kfree(msblk->fragment_index); ++ kfree(msblk->fragment); ++ kfree(msblk->uid); ++ kfree(msblk->read_page); ++ kfree(msblk->read_data); ++ kfree(msblk->block_cache); ++ kfree(msblk->fragment_index_2); ++ kfree(s->s_fs_info); ++ s->s_fs_info = NULL; ++ return -EINVAL; ++ ++failure: ++ return -ENOMEM; ++} ++ ++ ++static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf) ++{ ++ struct squashfs_sb_info *msblk = dentry->d_inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ TRACE("Entered squashfs_statfs\n"); ++ ++ buf->f_type = SQUASHFS_MAGIC; ++ buf->f_bsize = sblk->block_size; ++ buf->f_blocks = ((sblk->bytes_used - 1) >> sblk->block_log) + 1; ++ buf->f_bfree = buf->f_bavail = 0; ++ buf->f_files = sblk->inodes; ++ buf->f_ffree = 0; ++ buf->f_namelen = SQUASHFS_NAME_LEN; ++ ++ return 0; ++} ++ ++ ++static int squashfs_symlink_readpage(struct file *file, struct page *page) ++{ ++ struct inode *inode = page->mapping->host; ++ int index = page->index << PAGE_CACHE_SHIFT, length, bytes; ++ long long block = SQUASHFS_I(inode)->start_block; ++ int offset = SQUASHFS_I(inode)->offset; ++ void *pageaddr = kmap(page); ++ ++ TRACE("Entered squashfs_symlink_readpage, page index %ld, start block " ++ "%llx, offset %x\n", page->index, ++ SQUASHFS_I(inode)->start_block, ++ SQUASHFS_I(inode)->offset); ++ ++ for (length = 0; length < index; length += bytes) { ++ if (!(bytes = squashfs_get_cached_block(inode->i_sb, NULL, ++ block, offset, PAGE_CACHE_SIZE, &block, ++ &offset))) { ++ ERROR("Unable to read symbolic link [%llx:%x]\n", block, ++ offset); ++ goto skip_read; ++ } ++ } ++ ++ if (length != index) { ++ ERROR("(squashfs_symlink_readpage) length != index\n"); ++ bytes = 0; ++ goto skip_read; ++ } ++ ++ bytes = (i_size_read(inode) - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE : ++ i_size_read(inode) - length; ++ ++ if (!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, ++ offset, bytes, &block, &offset))) ++ ERROR("Unable to read symbolic link [%llx:%x]\n", block, offset); ++ ++skip_read: ++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); ++ kunmap(page); ++ SetPageUptodate(page); ++ unlock_page(page); ++ ++ return 0; ++} ++ ++ ++struct meta_index *locate_meta_index(struct inode *inode, int index, int offset) ++{ ++ struct meta_index *meta = NULL; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ int i; ++ ++ down(&msblk->meta_index_mutex); ++ ++ TRACE("locate_meta_index: index %d, offset %d\n", index, offset); ++ ++ if(msblk->meta_index == NULL) ++ goto not_allocated; ++ ++ for (i = 0; i < SQUASHFS_META_NUMBER; i ++) ++ if (msblk->meta_index[i].inode_number == inode->i_ino && ++ msblk->meta_index[i].offset >= offset && ++ msblk->meta_index[i].offset <= index && ++ msblk->meta_index[i].locked == 0) { ++ TRACE("locate_meta_index: entry %d, offset %d\n", i, ++ msblk->meta_index[i].offset); ++ meta = &msblk->meta_index[i]; ++ offset = meta->offset; ++ } ++ ++ if (meta) ++ meta->locked = 1; ++ ++not_allocated: ++ up(&msblk->meta_index_mutex); ++ ++ return meta; ++} ++ ++ ++struct meta_index *empty_meta_index(struct inode *inode, int offset, int skip) ++{ ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct meta_index *meta = NULL; ++ int i; ++ ++ down(&msblk->meta_index_mutex); ++ ++ TRACE("empty_meta_index: offset %d, skip %d\n", offset, skip); ++ ++ if(msblk->meta_index == NULL) { ++ if (!(msblk->meta_index = kmalloc(sizeof(struct meta_index) * ++ SQUASHFS_META_NUMBER, GFP_KERNEL))) { ++ ERROR("Failed to allocate meta_index\n"); ++ goto failed; ++ } ++ for(i = 0; i < SQUASHFS_META_NUMBER; i++) { ++ msblk->meta_index[i].inode_number = 0; ++ msblk->meta_index[i].locked = 0; ++ } ++ msblk->next_meta_index = 0; ++ } ++ ++ for(i = SQUASHFS_META_NUMBER; i && ++ msblk->meta_index[msblk->next_meta_index].locked; i --) ++ msblk->next_meta_index = (msblk->next_meta_index + 1) % ++ SQUASHFS_META_NUMBER; ++ ++ if(i == 0) { ++ TRACE("empty_meta_index: failed!\n"); ++ goto failed; ++ } ++ ++ TRACE("empty_meta_index: returned meta entry %d, %p\n", ++ msblk->next_meta_index, ++ &msblk->meta_index[msblk->next_meta_index]); ++ ++ meta = &msblk->meta_index[msblk->next_meta_index]; ++ msblk->next_meta_index = (msblk->next_meta_index + 1) % ++ SQUASHFS_META_NUMBER; ++ ++ meta->inode_number = inode->i_ino; ++ meta->offset = offset; ++ meta->skip = skip; ++ meta->entries = 0; ++ meta->locked = 1; ++ ++failed: ++ up(&msblk->meta_index_mutex); ++ return meta; ++} ++ ++ ++void release_meta_index(struct inode *inode, struct meta_index *meta) ++{ ++ meta->locked = 0; ++} ++ ++ ++static int read_block_index(struct super_block *s, int blocks, char *block_list, ++ long long *start_block, int *offset) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ unsigned int *block_listp; ++ int block = 0; ++ ++ if (msblk->swap) { ++ char sblock_list[blocks << 2]; ++ ++ if (!squashfs_get_cached_block(s, sblock_list, *start_block, ++ *offset, blocks << 2, start_block, offset)) { ++ ERROR("Unable to read block list [%llx:%x]\n", ++ *start_block, *offset); ++ goto failure; ++ } ++ SQUASHFS_SWAP_INTS(((unsigned int *)block_list), ++ ((unsigned int *)sblock_list), blocks); ++ } else ++ if (!squashfs_get_cached_block(s, block_list, *start_block, ++ *offset, blocks << 2, start_block, offset)) { ++ ERROR("Unable to read block list [%llx:%x]\n", ++ *start_block, *offset); ++ goto failure; ++ } ++ ++ for (block_listp = (unsigned int *) block_list; blocks; ++ block_listp++, blocks --) ++ block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp); ++ ++ return block; ++ ++failure: ++ return -1; ++} ++ ++ ++#define SIZE 256 ++ ++static inline int calculate_skip(int blocks) { ++ int skip = (blocks - 1) / ((SQUASHFS_SLOTS * SQUASHFS_META_ENTRIES + 1) * SQUASHFS_META_INDEXES); ++ return skip >= 7 ? 7 : skip + 1; ++} ++ ++ ++static int get_meta_index(struct inode *inode, int index, ++ long long *index_block, int *index_offset, ++ long long *data_block, char *block_list) ++{ ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ int skip = calculate_skip(i_size_read(inode) >> sblk->block_log); ++ int offset = 0; ++ struct meta_index *meta; ++ struct meta_entry *meta_entry; ++ long long cur_index_block = SQUASHFS_I(inode)->u.s1.block_list_start; ++ int cur_offset = SQUASHFS_I(inode)->offset; ++ long long cur_data_block = SQUASHFS_I(inode)->start_block; ++ int i; ++ ++ index /= SQUASHFS_META_INDEXES * skip; ++ ++ while ( offset < index ) { ++ meta = locate_meta_index(inode, index, offset + 1); ++ ++ if (meta == NULL) { ++ if ((meta = empty_meta_index(inode, offset + 1, ++ skip)) == NULL) ++ goto all_done; ++ } else { ++ offset = index < meta->offset + meta->entries ? index : ++ meta->offset + meta->entries - 1; ++ meta_entry = &meta->meta_entry[offset - meta->offset]; ++ cur_index_block = meta_entry->index_block + sblk->inode_table_start; ++ cur_offset = meta_entry->offset; ++ cur_data_block = meta_entry->data_block; ++ TRACE("get_meta_index: offset %d, meta->offset %d, " ++ "meta->entries %d\n", offset, meta->offset, ++ meta->entries); ++ TRACE("get_meta_index: index_block 0x%llx, offset 0x%x" ++ " data_block 0x%llx\n", cur_index_block, ++ cur_offset, cur_data_block); ++ } ++ ++ for (i = meta->offset + meta->entries; i <= index && ++ i < meta->offset + SQUASHFS_META_ENTRIES; i++) { ++ int blocks = skip * SQUASHFS_META_INDEXES; ++ ++ while (blocks) { ++ int block = blocks > (SIZE >> 2) ? (SIZE >> 2) : ++ blocks; ++ int res = read_block_index(inode->i_sb, block, ++ block_list, &cur_index_block, ++ &cur_offset); ++ ++ if (res == -1) ++ goto failed; ++ ++ cur_data_block += res; ++ blocks -= block; ++ } ++ ++ meta_entry = &meta->meta_entry[i - meta->offset]; ++ meta_entry->index_block = cur_index_block - sblk->inode_table_start; ++ meta_entry->offset = cur_offset; ++ meta_entry->data_block = cur_data_block; ++ meta->entries ++; ++ offset ++; ++ } ++ ++ TRACE("get_meta_index: meta->offset %d, meta->entries %d\n", ++ meta->offset, meta->entries); ++ ++ release_meta_index(inode, meta); ++ } ++ ++all_done: ++ *index_block = cur_index_block; ++ *index_offset = cur_offset; ++ *data_block = cur_data_block; ++ ++ return offset * SQUASHFS_META_INDEXES * skip; ++ ++failed: ++ release_meta_index(inode, meta); ++ return -1; ++} ++ ++ ++static long long read_blocklist(struct inode *inode, int index, ++ int readahead_blks, char *block_list, ++ unsigned short **block_p, unsigned int *bsize) ++{ ++ long long block_ptr; ++ int offset; ++ long long block; ++ int res = get_meta_index(inode, index, &block_ptr, &offset, &block, ++ block_list); ++ ++ TRACE("read_blocklist: res %d, index %d, block_ptr 0x%llx, offset" ++ " 0x%x, block 0x%llx\n", res, index, block_ptr, offset, ++ block); ++ ++ if(res == -1) ++ goto failure; ++ ++ index -= res; ++ ++ while ( index ) { ++ int blocks = index > (SIZE >> 2) ? (SIZE >> 2) : index; ++ int res = read_block_index(inode->i_sb, blocks, block_list, ++ &block_ptr, &offset); ++ if (res == -1) ++ goto failure; ++ block += res; ++ index -= blocks; ++ } ++ ++ if (read_block_index(inode->i_sb, 1, block_list, ++ &block_ptr, &offset) == -1) ++ goto failure; ++ *bsize = *((unsigned int *) block_list); ++ ++ return block; ++ ++failure: ++ return 0; ++} ++ ++ ++static int squashfs_readpage(struct file *file, struct page *page) ++{ ++ struct inode *inode = page->mapping->host; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ unsigned char block_list[SIZE]; ++ long long block; ++ unsigned int bsize, i = 0, bytes = 0, byte_offset = 0; ++ int index = page->index >> (sblk->block_log - PAGE_CACHE_SHIFT); ++ void *pageaddr; ++ struct squashfs_fragment_cache *fragment = NULL; ++ char *data_ptr = msblk->read_page; ++ ++ int mask = (1 << (sblk->block_log - PAGE_CACHE_SHIFT)) - 1; ++ int start_index = page->index & ~mask; ++ int end_index = start_index | mask; ++ ++ TRACE("Entered squashfs_readpage, page index %lx, start block %llx\n", ++ page->index, ++ SQUASHFS_I(inode)->start_block); ++ ++ if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> ++ PAGE_CACHE_SHIFT)) ++ goto skip_read; ++ ++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK ++ || index < (i_size_read(inode) >> ++ sblk->block_log)) { ++ if ((block = (msblk->read_blocklist)(inode, index, 1, ++ block_list, NULL, &bsize)) == 0) ++ goto skip_read; ++ ++ down(&msblk->read_page_mutex); ++ ++ if (!(bytes = squashfs_read_data(inode->i_sb, msblk->read_page, ++ block, bsize, NULL))) { ++ ERROR("Unable to read page, block %llx, size %x\n", block, ++ bsize); ++ up(&msblk->read_page_mutex); ++ goto skip_read; ++ } ++ } else { ++ if ((fragment = get_cached_fragment(inode->i_sb, ++ SQUASHFS_I(inode)-> ++ u.s1.fragment_start_block, ++ SQUASHFS_I(inode)->u.s1.fragment_size)) ++ == NULL) { ++ ERROR("Unable to read page, block %llx, size %x\n", ++ SQUASHFS_I(inode)-> ++ u.s1.fragment_start_block, ++ (int) SQUASHFS_I(inode)-> ++ u.s1.fragment_size); ++ goto skip_read; ++ } ++ bytes = SQUASHFS_I(inode)->u.s1.fragment_offset + ++ (i_size_read(inode) & (sblk->block_size ++ - 1)); ++ byte_offset = SQUASHFS_I(inode)->u.s1.fragment_offset; ++ data_ptr = fragment->data; ++ } ++ ++ for (i = start_index; i <= end_index && byte_offset < bytes; ++ i++, byte_offset += PAGE_CACHE_SIZE) { ++ struct page *push_page; ++ int available_bytes = (bytes - byte_offset) > PAGE_CACHE_SIZE ? ++ PAGE_CACHE_SIZE : bytes - byte_offset; ++ ++ TRACE("bytes %d, i %d, byte_offset %d, available_bytes %d\n", ++ bytes, i, byte_offset, available_bytes); ++ ++ if (i == page->index) { ++ pageaddr = kmap_atomic(page, KM_USER0); ++ memcpy(pageaddr, data_ptr + byte_offset, ++ available_bytes); ++ memset(pageaddr + available_bytes, 0, ++ PAGE_CACHE_SIZE - available_bytes); ++ kunmap_atomic(pageaddr, KM_USER0); ++ flush_dcache_page(page); ++ SetPageUptodate(page); ++ unlock_page(page); ++ } else if ((push_page = ++ grab_cache_page_nowait(page->mapping, i))) { ++ pageaddr = kmap_atomic(push_page, KM_USER0); ++ ++ memcpy(pageaddr, data_ptr + byte_offset, ++ available_bytes); ++ memset(pageaddr + available_bytes, 0, ++ PAGE_CACHE_SIZE - available_bytes); ++ kunmap_atomic(pageaddr, KM_USER0); ++ flush_dcache_page(push_page); ++ SetPageUptodate(push_page); ++ unlock_page(push_page); ++ page_cache_release(push_page); ++ } ++ } ++ ++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK ++ || index < (i_size_read(inode) >> ++ sblk->block_log)) ++ up(&msblk->read_page_mutex); ++ else ++ release_cached_fragment(msblk, fragment); ++ ++ return 0; ++ ++skip_read: ++ pageaddr = kmap_atomic(page, KM_USER0); ++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); ++ kunmap_atomic(pageaddr, KM_USER0); ++ flush_dcache_page(page); ++ SetPageUptodate(page); ++ unlock_page(page); ++ ++ return 0; ++} ++ ++ ++static int squashfs_readpage4K(struct file *file, struct page *page) ++{ ++ struct inode *inode = page->mapping->host; ++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ unsigned char block_list[SIZE]; ++ long long block; ++ unsigned int bsize, bytes = 0; ++ void *pageaddr; ++ ++ TRACE("Entered squashfs_readpage4K, page index %lx, start block %llx\n", ++ page->index, ++ SQUASHFS_I(inode)->start_block); ++ ++ if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> ++ PAGE_CACHE_SHIFT)) { ++ pageaddr = kmap_atomic(page, KM_USER0); ++ goto skip_read; ++ } ++ ++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK ++ || page->index < (i_size_read(inode) >> ++ sblk->block_log)) { ++ block = (msblk->read_blocklist)(inode, page->index, 1, ++ block_list, NULL, &bsize); ++ ++ down(&msblk->read_page_mutex); ++ bytes = squashfs_read_data(inode->i_sb, msblk->read_page, block, ++ bsize, NULL); ++ pageaddr = kmap_atomic(page, KM_USER0); ++ if (bytes) ++ memcpy(pageaddr, msblk->read_page, bytes); ++ else ++ ERROR("Unable to read page, block %llx, size %x\n", ++ block, bsize); ++ up(&msblk->read_page_mutex); ++ } else { ++ struct squashfs_fragment_cache *fragment = ++ get_cached_fragment(inode->i_sb, ++ SQUASHFS_I(inode)-> ++ u.s1.fragment_start_block, ++ SQUASHFS_I(inode)-> u.s1.fragment_size); ++ pageaddr = kmap_atomic(page, KM_USER0); ++ if (fragment) { ++ bytes = i_size_read(inode) & (sblk->block_size - 1); ++ memcpy(pageaddr, fragment->data + SQUASHFS_I(inode)-> ++ u.s1.fragment_offset, bytes); ++ release_cached_fragment(msblk, fragment); ++ } else ++ ERROR("Unable to read page, block %llx, size %x\n", ++ SQUASHFS_I(inode)-> ++ u.s1.fragment_start_block, (int) ++ SQUASHFS_I(inode)-> u.s1.fragment_size); ++ } ++ ++skip_read: ++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); ++ kunmap_atomic(pageaddr, KM_USER0); ++ flush_dcache_page(page); ++ SetPageUptodate(page); ++ unlock_page(page); ++ ++ return 0; ++} ++ ++ ++static int get_dir_index_using_offset(struct super_block *s, long long ++ *next_block, unsigned int *next_offset, ++ long long index_start, ++ unsigned int index_offset, int i_count, ++ long long f_pos) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ int i, length = 0; ++ struct squashfs_dir_index index; ++ ++ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", ++ i_count, (unsigned int) f_pos); ++ ++ f_pos =- 3; ++ if (f_pos == 0) ++ goto finish; ++ ++ for (i = 0; i < i_count; i++) { ++ if (msblk->swap) { ++ struct squashfs_dir_index sindex; ++ squashfs_get_cached_block(s, (char *) &sindex, ++ index_start, index_offset, ++ sizeof(sindex), &index_start, ++ &index_offset); ++ SQUASHFS_SWAP_DIR_INDEX(&index, &sindex); ++ } else ++ squashfs_get_cached_block(s, (char *) &index, ++ index_start, index_offset, ++ sizeof(index), &index_start, ++ &index_offset); ++ ++ if (index.index > f_pos) ++ break; ++ ++ squashfs_get_cached_block(s, NULL, index_start, index_offset, ++ index.size + 1, &index_start, ++ &index_offset); ++ ++ length = index.index; ++ *next_block = index.start_block + sblk->directory_table_start; ++ } ++ ++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; ++ ++finish: ++ return length + 3; ++} ++ ++ ++static int get_dir_index_using_name(struct super_block *s, long long ++ *next_block, unsigned int *next_offset, ++ long long index_start, ++ unsigned int index_offset, int i_count, ++ const char *name, int size) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ int i, length = 0; ++ char buffer[sizeof(struct squashfs_dir_index) + SQUASHFS_NAME_LEN + 1]; ++ struct squashfs_dir_index *index = (struct squashfs_dir_index *) buffer; ++ char str[SQUASHFS_NAME_LEN + 1]; ++ ++ TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count); ++ ++ strncpy(str, name, size); ++ str[size] = '\0'; ++ ++ for (i = 0; i < i_count; i++) { ++ if (msblk->swap) { ++ struct squashfs_dir_index sindex; ++ squashfs_get_cached_block(s, (char *) &sindex, ++ index_start, index_offset, ++ sizeof(sindex), &index_start, ++ &index_offset); ++ SQUASHFS_SWAP_DIR_INDEX(index, &sindex); ++ } else ++ squashfs_get_cached_block(s, (char *) index, ++ index_start, index_offset, ++ sizeof(struct squashfs_dir_index), ++ &index_start, &index_offset); ++ ++ squashfs_get_cached_block(s, index->name, index_start, ++ index_offset, index->size + 1, ++ &index_start, &index_offset); ++ ++ index->name[index->size + 1] = '\0'; ++ ++ if (strcmp(index->name, str) > 0) ++ break; ++ ++ length = index->index; ++ *next_block = index->start_block + sblk->directory_table_start; ++ } ++ ++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; ++ return length + 3; ++} ++ ++ ++static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir) ++{ ++ struct inode *i = file->f_dentry->d_inode; ++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long next_block = SQUASHFS_I(i)->start_block + ++ sblk->directory_table_start; ++ int next_offset = SQUASHFS_I(i)->offset, length = 0, dirs_read = 0, ++ dir_count; ++ struct squashfs_dir_header dirh; ++ char buffer[sizeof(struct squashfs_dir_entry) + SQUASHFS_NAME_LEN + 1]; ++ struct squashfs_dir_entry *dire = (struct squashfs_dir_entry *) buffer; ++ ++ TRACE("Entered squashfs_readdir [%llx:%x]\n", next_block, next_offset); ++ ++ while(file->f_pos < 3) { ++ char *name; ++ int size, i_ino; ++ ++ if(file->f_pos == 0) { ++ name = "."; ++ size = 1; ++ i_ino = i->i_ino; ++ } else { ++ name = ".."; ++ size = 2; ++ i_ino = SQUASHFS_I(i)->u.s2.parent_inode; ++ } ++ TRACE("Calling filldir(%x, %s, %d, %d, %d, %d)\n", ++ (unsigned int) dirent, name, size, (int) ++ file->f_pos, i_ino, ++ squashfs_filetype_table[1]); ++ ++ if (filldir(dirent, name, size, ++ file->f_pos, i_ino, ++ squashfs_filetype_table[1]) < 0) { ++ TRACE("Filldir returned less than 0\n"); ++ goto finish; ++ } ++ file->f_pos += size; ++ dirs_read++; ++ } ++ ++ length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_start, ++ SQUASHFS_I(i)->u.s2.directory_index_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_count, ++ file->f_pos); ++ ++ while (length < i_size_read(i)) { ++ /* read directory header */ ++ if (msblk->swap) { ++ struct squashfs_dir_header sdirh; ++ ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, ++ next_block, next_offset, sizeof(sdirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdirh); ++ SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, ++ next_block, next_offset, sizeof(dirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(dirh); ++ } ++ ++ dir_count = dirh.count + 1; ++ while (dir_count--) { ++ if (msblk->swap) { ++ struct squashfs_dir_entry sdire; ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ &sdire, next_block, next_offset, ++ sizeof(sdire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdire); ++ SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ dire, next_block, next_offset, ++ sizeof(*dire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(*dire); ++ } ++ ++ if (!squashfs_get_cached_block(i->i_sb, dire->name, ++ next_block, next_offset, ++ dire->size + 1, &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += dire->size + 1; ++ ++ if (file->f_pos >= length) ++ continue; ++ ++ dire->name[dire->size + 1] = '\0'; ++ ++ TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d, %d)\n", ++ (unsigned int) dirent, dire->name, ++ dire->size + 1, (int) file->f_pos, ++ dirh.start_block, dire->offset, ++ dirh.inode_number + dire->inode_number, ++ squashfs_filetype_table[dire->type]); ++ ++ if (filldir(dirent, dire->name, dire->size + 1, ++ file->f_pos, ++ dirh.inode_number + dire->inode_number, ++ squashfs_filetype_table[dire->type]) ++ < 0) { ++ TRACE("Filldir returned less than 0\n"); ++ goto finish; ++ } ++ file->f_pos = length; ++ dirs_read++; ++ } ++ } ++ ++finish: ++ return dirs_read; ++ ++failed_read: ++ ERROR("Unable to read directory block [%llx:%x]\n", next_block, ++ next_offset); ++ return 0; ++} ++ ++ ++static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry, ++ struct nameidata *nd) ++{ ++ const unsigned char *name = dentry->d_name.name; ++ int len = dentry->d_name.len; ++ struct inode *inode = NULL; ++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long next_block = SQUASHFS_I(i)->start_block + ++ sblk->directory_table_start; ++ int next_offset = SQUASHFS_I(i)->offset, length = 0, ++ dir_count; ++ struct squashfs_dir_header dirh; ++ char buffer[sizeof(struct squashfs_dir_entry) + SQUASHFS_NAME_LEN]; ++ struct squashfs_dir_entry *dire = (struct squashfs_dir_entry *) buffer; ++ ++ TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset); ++ ++ if (len > SQUASHFS_NAME_LEN) ++ goto exit_loop; ++ ++ length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_start, ++ SQUASHFS_I(i)->u.s2.directory_index_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_count, name, ++ len); ++ ++ while (length < i_size_read(i)) { ++ /* read directory header */ ++ if (msblk->swap) { ++ struct squashfs_dir_header sdirh; ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, ++ next_block, next_offset, sizeof(sdirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdirh); ++ SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, ++ next_block, next_offset, sizeof(dirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(dirh); ++ } ++ ++ dir_count = dirh.count + 1; ++ while (dir_count--) { ++ if (msblk->swap) { ++ struct squashfs_dir_entry sdire; ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ &sdire, next_block,next_offset, ++ sizeof(sdire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdire); ++ SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ dire, next_block,next_offset, ++ sizeof(*dire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(*dire); ++ } ++ ++ if (!squashfs_get_cached_block(i->i_sb, dire->name, ++ next_block, next_offset, dire->size + 1, ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += dire->size + 1; ++ ++ if (name[0] < dire->name[0]) ++ goto exit_loop; ++ ++ if ((len == dire->size + 1) && !strncmp(name, ++ dire->name, len)) { ++ squashfs_inode_t ino = ++ SQUASHFS_MKINODE(dirh.start_block, ++ dire->offset); ++ ++ TRACE("calling squashfs_iget for directory " ++ "entry %s, inode %x:%x, %d\n", name, ++ dirh.start_block, dire->offset, ++ dirh.inode_number + dire->inode_number); ++ ++ inode = (msblk->iget)(i->i_sb, ino); ++ ++ goto exit_loop; ++ } ++ } ++ } ++ ++exit_loop: ++ d_add(dentry, inode); ++ return ERR_PTR(0); ++ ++failed_read: ++ ERROR("Unable to read directory block [%llx:%x]\n", next_block, ++ next_offset); ++ goto exit_loop; ++} ++ ++ ++static void squashfs_put_super(struct super_block *s) ++{ ++ int i; ++ ++ if (s->s_fs_info) { ++ struct squashfs_sb_info *sbi = s->s_fs_info; ++ if (sbi->block_cache) ++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++) ++ if (sbi->block_cache[i].block != ++ SQUASHFS_INVALID_BLK) ++ kfree(sbi->block_cache[i].data); ++ if (sbi->fragment) ++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) ++ SQUASHFS_FREE(sbi->fragment[i].data); ++ kfree(sbi->fragment); ++ kfree(sbi->block_cache); ++ kfree(sbi->read_data); ++ kfree(sbi->read_page); ++ kfree(sbi->uid); ++ kfree(sbi->fragment_index); ++ kfree(sbi->fragment_index_2); ++ kfree(sbi->meta_index); ++ kfree(s->s_fs_info); ++ s->s_fs_info = NULL; ++ } ++} ++ ++ ++static int squashfs_get_sb(struct file_system_type *fs_type, ++ int flags, const char *dev_name, void *data, ++ struct vfsmount *mnt) ++{ ++ return get_sb_bdev(fs_type, flags, dev_name, data, squashfs_fill_super, mnt); ++} ++ ++ ++static int __init init_squashfs_fs(void) ++{ ++ int err = init_inodecache(); ++ if (err) ++ goto out; ++ ++ printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) " ++ "Phillip Lougher\n"); ++ ++ if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) { ++ ERROR("Failed to allocate zlib workspace\n"); ++ destroy_inodecache(); ++ err = -ENOMEM; ++ goto out; ++ } ++ ++ if ((err = register_filesystem(&squashfs_fs_type))) { ++ vfree(stream.workspace); ++ destroy_inodecache(); ++ } ++ ++out: ++ return err; ++} ++ ++ ++static void __exit exit_squashfs_fs(void) ++{ ++ vfree(stream.workspace); ++ unregister_filesystem(&squashfs_fs_type); ++ destroy_inodecache(); ++} ++ ++ ++static struct kmem_cache * squashfs_inode_cachep; ++ ++ ++static struct inode *squashfs_alloc_inode(struct super_block *sb) ++{ ++ struct squashfs_inode_info *ei; ++ ei = kmem_cache_alloc(squashfs_inode_cachep, GFP_KERNEL); ++ if (!ei) ++ return NULL; ++ return &ei->vfs_inode; ++} ++ ++ ++static void squashfs_destroy_inode(struct inode *inode) ++{ ++ kmem_cache_free(squashfs_inode_cachep, SQUASHFS_I(inode)); ++} ++ ++ ++static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) ++{ ++ struct squashfs_inode_info *ei = foo; ++ ++ inode_init_once(&ei->vfs_inode); ++} ++ ++ ++static int __init init_inodecache(void) ++{ ++ squashfs_inode_cachep = kmem_cache_create("squashfs_inode_cache", ++ sizeof(struct squashfs_inode_info), ++ 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT, ++ init_once, NULL); ++ if (squashfs_inode_cachep == NULL) ++ return -ENOMEM; ++ return 0; ++} ++ ++ ++static void destroy_inodecache(void) ++{ ++ kmem_cache_destroy(squashfs_inode_cachep); ++} ++ ++ ++module_init(init_squashfs_fs); ++module_exit(exit_squashfs_fs); ++MODULE_DESCRIPTION("squashfs, a compressed read-only filesystem"); ++MODULE_AUTHOR("Phillip Lougher <phillip@lougher.org.uk>"); ++MODULE_LICENSE("GPL"); +diff -urN linux-2.6.21.1.old/fs/squashfs/Makefile linux-2.6.21.1.dev/fs/squashfs/Makefile +--- linux-2.6.21.1.old/fs/squashfs/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/squashfs/Makefile 2007-05-26 19:00:37.123351456 +0200 +@@ -0,0 +1,7 @@ ++# ++# Makefile for the linux squashfs routines. ++# ++ ++obj-$(CONFIG_SQUASHFS) += squashfs.o ++squashfs-y += inode.o ++squashfs-y += squashfs2_0.o +diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs2_0.c linux-2.6.21.1.dev/fs/squashfs/squashfs2_0.c +--- linux-2.6.21.1.old/fs/squashfs/squashfs2_0.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/squashfs/squashfs2_0.c 2007-05-26 19:00:37.125351152 +0200 +@@ -0,0 +1,758 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher <phillip@lougher.org.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * squashfs2_0.c ++ */ ++ ++#include <linux/types.h> ++#include <linux/squashfs_fs.h> ++#include <linux/module.h> ++#include <linux/errno.h> ++#include <linux/slab.h> ++#include <linux/fs.h> ++#include <linux/smp_lock.h> ++#include <linux/slab.h> ++#include <linux/squashfs_fs_sb.h> ++#include <linux/squashfs_fs_i.h> ++#include <linux/buffer_head.h> ++#include <linux/vfs.h> ++#include <linux/init.h> ++#include <linux/dcache.h> ++#include <linux/wait.h> ++#include <linux/zlib.h> ++#include <linux/blkdev.h> ++#include <linux/vmalloc.h> ++#include <asm/uaccess.h> ++#include <asm/semaphore.h> ++ ++#include "squashfs.h" ++static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir); ++static struct dentry *squashfs_lookup_2(struct inode *, struct dentry *, ++ struct nameidata *); ++ ++static struct file_operations squashfs_dir_ops_2 = { ++ .read = generic_read_dir, ++ .readdir = squashfs_readdir_2 ++}; ++ ++static struct inode_operations squashfs_dir_inode_ops_2 = { ++ .lookup = squashfs_lookup_2 ++}; ++ ++static unsigned char squashfs_filetype_table[] = { ++ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK ++}; ++ ++static int read_fragment_index_table_2(struct super_block *s) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ if (!(msblk->fragment_index_2 = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES_2 ++ (sblk->fragments), GFP_KERNEL))) { ++ ERROR("Failed to allocate uid/gid table\n"); ++ return 0; ++ } ++ ++ if (SQUASHFS_FRAGMENT_INDEX_BYTES_2(sblk->fragments) && ++ !squashfs_read_data(s, (char *) ++ msblk->fragment_index_2, ++ sblk->fragment_table_start, ++ SQUASHFS_FRAGMENT_INDEX_BYTES_2 ++ (sblk->fragments) | ++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) { ++ ERROR("unable to read fragment index table\n"); ++ return 0; ++ } ++ ++ if (msblk->swap) { ++ int i; ++ unsigned int fragment; ++ ++ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES_2(sblk->fragments); ++ i++) { ++ SQUASHFS_SWAP_FRAGMENT_INDEXES_2((&fragment), ++ &msblk->fragment_index_2[i], 1); ++ msblk->fragment_index_2[i] = fragment; ++ } ++ } ++ ++ return 1; ++} ++ ++ ++static int get_fragment_location_2(struct super_block *s, unsigned int fragment, ++ long long *fragment_start_block, ++ unsigned int *fragment_size) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ long long start_block = ++ msblk->fragment_index_2[SQUASHFS_FRAGMENT_INDEX_2(fragment)]; ++ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET_2(fragment); ++ struct squashfs_fragment_entry_2 fragment_entry; ++ ++ if (msblk->swap) { ++ struct squashfs_fragment_entry_2 sfragment_entry; ++ ++ if (!squashfs_get_cached_block(s, (char *) &sfragment_entry, ++ start_block, offset, ++ sizeof(sfragment_entry), &start_block, ++ &offset)) ++ goto out; ++ SQUASHFS_SWAP_FRAGMENT_ENTRY_2(&fragment_entry, &sfragment_entry); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) &fragment_entry, ++ start_block, offset, ++ sizeof(fragment_entry), &start_block, ++ &offset)) ++ goto out; ++ ++ *fragment_start_block = fragment_entry.start_block; ++ *fragment_size = fragment_entry.size; ++ ++ return 1; ++ ++out: ++ return 0; ++} ++ ++ ++static struct inode *squashfs_new_inode(struct super_block *s, ++ struct squashfs_base_inode_header_2 *inodeb, unsigned int ino) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ struct inode *i = new_inode(s); ++ ++ if (i) { ++ i->i_ino = ino; ++ i->i_mtime.tv_sec = sblk->mkfs_time; ++ i->i_atime.tv_sec = sblk->mkfs_time; ++ i->i_ctime.tv_sec = sblk->mkfs_time; ++ i->i_uid = msblk->uid[inodeb->uid]; ++ i->i_mode = inodeb->mode; ++ i->i_nlink = 1; ++ i->i_size = 0; ++ if (inodeb->guid == SQUASHFS_GUIDS) ++ i->i_gid = i->i_uid; ++ else ++ i->i_gid = msblk->guid[inodeb->guid]; ++ } ++ ++ return i; ++} ++ ++ ++static struct inode *squashfs_iget_2(struct super_block *s, squashfs_inode_t inode) ++{ ++ struct inode *i; ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ unsigned int block = SQUASHFS_INODE_BLK(inode) + ++ sblk->inode_table_start; ++ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); ++ unsigned int ino = SQUASHFS_MK_VFS_INODE(block ++ - sblk->inode_table_start, offset); ++ long long next_block; ++ unsigned int next_offset; ++ union squashfs_inode_header_2 id, sid; ++ struct squashfs_base_inode_header_2 *inodeb = &id.base, ++ *sinodeb = &sid.base; ++ ++ TRACE("Entered squashfs_iget\n"); ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) sinodeb, block, ++ offset, sizeof(*sinodeb), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_BASE_INODE_HEADER_2(inodeb, sinodeb, ++ sizeof(*sinodeb)); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) inodeb, block, ++ offset, sizeof(*inodeb), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ switch(inodeb->inode_type) { ++ case SQUASHFS_FILE_TYPE: { ++ struct squashfs_reg_inode_header_2 *inodep = &id.reg; ++ struct squashfs_reg_inode_header_2 *sinodep = &sid.reg; ++ long long frag_blk; ++ unsigned int frag_size; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_REG_INODE_HEADER_2(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ frag_blk = SQUASHFS_INVALID_BLK; ++ if (inodep->fragment != SQUASHFS_INVALID_FRAG && ++ !get_fragment_location_2(s, ++ inodep->fragment, &frag_blk, &frag_size)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL) ++ goto failed_read1; ++ ++ i->i_size = inodep->file_size; ++ i->i_fop = &generic_ro_fops; ++ i->i_mode |= S_IFREG; ++ i->i_mtime.tv_sec = inodep->mtime; ++ i->i_atime.tv_sec = inodep->mtime; ++ i->i_ctime.tv_sec = inodep->mtime; ++ i->i_blocks = ((i->i_size - 1) >> 9) + 1; ++ i->i_blksize = PAGE_CACHE_SIZE; ++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; ++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; ++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->u.s1.block_list_start = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ if (sblk->block_size > 4096) ++ i->i_data.a_ops = &squashfs_aops; ++ else ++ i->i_data.a_ops = &squashfs_aops_4K; ++ ++ TRACE("File inode %x:%x, start_block %x, " ++ "block_list_start %llx, offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, next_block, ++ next_offset); ++ break; ++ } ++ case SQUASHFS_DIR_TYPE: { ++ struct squashfs_dir_inode_header_2 *inodep = &id.dir; ++ struct squashfs_dir_inode_header_2 *sinodep = &sid.dir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DIR_INODE_HEADER_2(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL) ++ goto failed_read1; ++ ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops_2; ++ i->i_fop = &squashfs_dir_ops_2; ++ i->i_mode |= S_IFDIR; ++ i->i_mtime.tv_sec = inodep->mtime; ++ i->i_atime.tv_sec = inodep->mtime; ++ i->i_ctime.tv_sec = inodep->mtime; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = 0; ++ SQUASHFS_I(i)->u.s2.parent_inode = 0; ++ ++ TRACE("Directory inode %x:%x, start_block %x, offset " ++ "%x\n", SQUASHFS_INODE_BLK(inode), ++ offset, inodep->start_block, ++ inodep->offset); ++ break; ++ } ++ case SQUASHFS_LDIR_TYPE: { ++ struct squashfs_ldir_inode_header_2 *inodep = &id.ldir; ++ struct squashfs_ldir_inode_header_2 *sinodep = &sid.ldir; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_LDIR_INODE_HEADER_2(inodep, ++ sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL) ++ goto failed_read1; ++ ++ i->i_size = inodep->file_size; ++ i->i_op = &squashfs_dir_inode_ops_2; ++ i->i_fop = &squashfs_dir_ops_2; ++ i->i_mode |= S_IFDIR; ++ i->i_mtime.tv_sec = inodep->mtime; ++ i->i_atime.tv_sec = inodep->mtime; ++ i->i_ctime.tv_sec = inodep->mtime; ++ SQUASHFS_I(i)->start_block = inodep->start_block; ++ SQUASHFS_I(i)->offset = inodep->offset; ++ SQUASHFS_I(i)->u.s2.directory_index_start = next_block; ++ SQUASHFS_I(i)->u.s2.directory_index_offset = ++ next_offset; ++ SQUASHFS_I(i)->u.s2.directory_index_count = ++ inodep->i_count; ++ SQUASHFS_I(i)->u.s2.parent_inode = 0; ++ ++ TRACE("Long directory inode %x:%x, start_block %x, " ++ "offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->start_block, inodep->offset); ++ break; ++ } ++ case SQUASHFS_SYMLINK_TYPE: { ++ struct squashfs_symlink_inode_header_2 *inodep = ++ &id.symlink; ++ struct squashfs_symlink_inode_header_2 *sinodep = ++ &sid.symlink; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(inodep, ++ sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL) ++ goto failed_read1; ++ ++ i->i_size = inodep->symlink_size; ++ i->i_op = &page_symlink_inode_operations; ++ i->i_data.a_ops = &squashfs_symlink_aops; ++ i->i_mode |= S_IFLNK; ++ SQUASHFS_I(i)->start_block = next_block; ++ SQUASHFS_I(i)->offset = next_offset; ++ ++ TRACE("Symbolic link inode %x:%x, start_block %llx, " ++ "offset %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ next_block, next_offset); ++ break; ++ } ++ case SQUASHFS_BLKDEV_TYPE: ++ case SQUASHFS_CHRDEV_TYPE: { ++ struct squashfs_dev_inode_header_2 *inodep = &id.dev; ++ struct squashfs_dev_inode_header_2 *sinodep = &sid.dev; ++ ++ if (msblk->swap) { ++ if (!squashfs_get_cached_block(s, (char *) ++ sinodep, block, offset, ++ sizeof(*sinodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ SQUASHFS_SWAP_DEV_INODE_HEADER_2(inodep, sinodep); ++ } else ++ if (!squashfs_get_cached_block(s, (char *) ++ inodep, block, offset, ++ sizeof(*inodep), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ if ((i = squashfs_new_inode(s, inodeb, ino)) == NULL) ++ goto failed_read1; ++ ++ i->i_mode |= (inodeb->inode_type == ++ SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : ++ S_IFBLK; ++ init_special_inode(i, i->i_mode, ++ old_decode_dev(inodep->rdev)); ++ ++ TRACE("Device inode %x:%x, rdev %x\n", ++ SQUASHFS_INODE_BLK(inode), offset, ++ inodep->rdev); ++ break; ++ } ++ case SQUASHFS_FIFO_TYPE: ++ case SQUASHFS_SOCKET_TYPE: { ++ if ((i = squashfs_new_inode(s, inodeb, ino)) == NULL) ++ goto failed_read1; ++ ++ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE) ++ ? S_IFIFO : S_IFSOCK; ++ init_special_inode(i, i->i_mode, 0); ++ break; ++ } ++ default: ++ ERROR("Unknown inode type %d in squashfs_iget!\n", ++ inodeb->inode_type); ++ goto failed_read1; ++ } ++ ++ insert_inode_hash(i); ++ return i; ++ ++failed_read: ++ ERROR("Unable to read inode [%x:%x]\n", block, offset); ++ ++failed_read1: ++ return NULL; ++} ++ ++ ++static int get_dir_index_using_offset(struct super_block *s, long long ++ *next_block, unsigned int *next_offset, ++ long long index_start, ++ unsigned int index_offset, int i_count, ++ long long f_pos) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ int i, length = 0; ++ struct squashfs_dir_index_2 index; ++ ++ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", ++ i_count, (unsigned int) f_pos); ++ ++ if (f_pos == 0) ++ goto finish; ++ ++ for (i = 0; i < i_count; i++) { ++ if (msblk->swap) { ++ struct squashfs_dir_index_2 sindex; ++ squashfs_get_cached_block(s, (char *) &sindex, ++ index_start, index_offset, ++ sizeof(sindex), &index_start, ++ &index_offset); ++ SQUASHFS_SWAP_DIR_INDEX_2(&index, &sindex); ++ } else ++ squashfs_get_cached_block(s, (char *) &index, ++ index_start, index_offset, ++ sizeof(index), &index_start, ++ &index_offset); ++ ++ if (index.index > f_pos) ++ break; ++ ++ squashfs_get_cached_block(s, NULL, index_start, index_offset, ++ index.size + 1, &index_start, ++ &index_offset); ++ ++ length = index.index; ++ *next_block = index.start_block + sblk->directory_table_start; ++ } ++ ++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; ++ ++finish: ++ return length; ++} ++ ++ ++static int get_dir_index_using_name(struct super_block *s, long long ++ *next_block, unsigned int *next_offset, ++ long long index_start, ++ unsigned int index_offset, int i_count, ++ const char *name, int size) ++{ ++ struct squashfs_sb_info *msblk = s->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ int i, length = 0; ++ char buffer[sizeof(struct squashfs_dir_index_2) + SQUASHFS_NAME_LEN + 1]; ++ struct squashfs_dir_index_2 *index = (struct squashfs_dir_index_2 *) buffer; ++ char str[SQUASHFS_NAME_LEN + 1]; ++ ++ TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count); ++ ++ strncpy(str, name, size); ++ str[size] = '\0'; ++ ++ for (i = 0; i < i_count; i++) { ++ if (msblk->swap) { ++ struct squashfs_dir_index_2 sindex; ++ squashfs_get_cached_block(s, (char *) &sindex, ++ index_start, index_offset, ++ sizeof(sindex), &index_start, ++ &index_offset); ++ SQUASHFS_SWAP_DIR_INDEX_2(index, &sindex); ++ } else ++ squashfs_get_cached_block(s, (char *) index, ++ index_start, index_offset, ++ sizeof(struct squashfs_dir_index_2), ++ &index_start, &index_offset); ++ ++ squashfs_get_cached_block(s, index->name, index_start, ++ index_offset, index->size + 1, ++ &index_start, &index_offset); ++ ++ index->name[index->size + 1] = '\0'; ++ ++ if (strcmp(index->name, str) > 0) ++ break; ++ ++ length = index->index; ++ *next_block = index->start_block + sblk->directory_table_start; ++ } ++ ++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; ++ return length; ++} ++ ++ ++static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir) ++{ ++ struct inode *i = file->f_dentry->d_inode; ++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long next_block = SQUASHFS_I(i)->start_block + ++ sblk->directory_table_start; ++ int next_offset = SQUASHFS_I(i)->offset, length = 0, dirs_read = 0, ++ dir_count; ++ struct squashfs_dir_header_2 dirh; ++ char buffer[sizeof(struct squashfs_dir_entry_2) + SQUASHFS_NAME_LEN + 1]; ++ struct squashfs_dir_entry_2 *dire = (struct squashfs_dir_entry_2 *) buffer; ++ ++ TRACE("Entered squashfs_readdir_2 [%llx:%x]\n", next_block, next_offset); ++ ++ length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_start, ++ SQUASHFS_I(i)->u.s2.directory_index_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_count, ++ file->f_pos); ++ ++ while (length < i_size_read(i)) { ++ /* read directory header */ ++ if (msblk->swap) { ++ struct squashfs_dir_header_2 sdirh; ++ ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, ++ next_block, next_offset, sizeof(sdirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdirh); ++ SQUASHFS_SWAP_DIR_HEADER_2(&dirh, &sdirh); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, ++ next_block, next_offset, sizeof(dirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(dirh); ++ } ++ ++ dir_count = dirh.count + 1; ++ while (dir_count--) { ++ if (msblk->swap) { ++ struct squashfs_dir_entry_2 sdire; ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ &sdire, next_block, next_offset, ++ sizeof(sdire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdire); ++ SQUASHFS_SWAP_DIR_ENTRY_2(dire, &sdire); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ dire, next_block, next_offset, ++ sizeof(*dire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(*dire); ++ } ++ ++ if (!squashfs_get_cached_block(i->i_sb, dire->name, ++ next_block, next_offset, ++ dire->size + 1, &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += dire->size + 1; ++ ++ if (file->f_pos >= length) ++ continue; ++ ++ dire->name[dire->size + 1] = '\0'; ++ ++ TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d)\n", ++ (unsigned int) dirent, dire->name, ++ dire->size + 1, (int) file->f_pos, ++ dirh.start_block, dire->offset, ++ squashfs_filetype_table[dire->type]); ++ ++ if (filldir(dirent, dire->name, dire->size + 1, ++ file->f_pos, SQUASHFS_MK_VFS_INODE( ++ dirh.start_block, dire->offset), ++ squashfs_filetype_table[dire->type]) ++ < 0) { ++ TRACE("Filldir returned less than 0\n"); ++ goto finish; ++ } ++ file->f_pos = length; ++ dirs_read++; ++ } ++ } ++ ++finish: ++ return dirs_read; ++ ++failed_read: ++ ERROR("Unable to read directory block [%llx:%x]\n", next_block, ++ next_offset); ++ return 0; ++} ++ ++ ++static struct dentry *squashfs_lookup_2(struct inode *i, struct dentry *dentry, ++ struct nameidata *nd) ++{ ++ const unsigned char *name = dentry->d_name.name; ++ int len = dentry->d_name.len; ++ struct inode *inode = NULL; ++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ long long next_block = SQUASHFS_I(i)->start_block + ++ sblk->directory_table_start; ++ int next_offset = SQUASHFS_I(i)->offset, length = 0, ++ dir_count; ++ struct squashfs_dir_header_2 dirh; ++ char buffer[sizeof(struct squashfs_dir_entry_2) + SQUASHFS_NAME_LEN]; ++ struct squashfs_dir_entry_2 *dire = (struct squashfs_dir_entry_2 *) buffer; ++ int sorted = sblk->s_major == 2 && sblk->s_minor >= 1; ++ ++ TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset); ++ ++ if (len > SQUASHFS_NAME_LEN) ++ goto exit_loop; ++ ++ length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_start, ++ SQUASHFS_I(i)->u.s2.directory_index_offset, ++ SQUASHFS_I(i)->u.s2.directory_index_count, name, ++ len); ++ ++ while (length < i_size_read(i)) { ++ /* read directory header */ ++ if (msblk->swap) { ++ struct squashfs_dir_header_2 sdirh; ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, ++ next_block, next_offset, sizeof(sdirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdirh); ++ SQUASHFS_SWAP_DIR_HEADER_2(&dirh, &sdirh); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, ++ next_block, next_offset, sizeof(dirh), ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(dirh); ++ } ++ ++ dir_count = dirh.count + 1; ++ while (dir_count--) { ++ if (msblk->swap) { ++ struct squashfs_dir_entry_2 sdire; ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ &sdire, next_block,next_offset, ++ sizeof(sdire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(sdire); ++ SQUASHFS_SWAP_DIR_ENTRY_2(dire, &sdire); ++ } else { ++ if (!squashfs_get_cached_block(i->i_sb, (char *) ++ dire, next_block,next_offset, ++ sizeof(*dire), &next_block, ++ &next_offset)) ++ goto failed_read; ++ ++ length += sizeof(*dire); ++ } ++ ++ if (!squashfs_get_cached_block(i->i_sb, dire->name, ++ next_block, next_offset, dire->size + 1, ++ &next_block, &next_offset)) ++ goto failed_read; ++ ++ length += dire->size + 1; ++ ++ if (sorted && name[0] < dire->name[0]) ++ goto exit_loop; ++ ++ if ((len == dire->size + 1) && !strncmp(name, ++ dire->name, len)) { ++ squashfs_inode_t ino = ++ SQUASHFS_MKINODE(dirh.start_block, ++ dire->offset); ++ ++ TRACE("calling squashfs_iget for directory " ++ "entry %s, inode %x:%x, %lld\n", name, ++ dirh.start_block, dire->offset, ino); ++ ++ inode = (msblk->iget)(i->i_sb, ino); ++ ++ goto exit_loop; ++ } ++ } ++ } ++ ++exit_loop: ++ d_add(dentry, inode); ++ return ERR_PTR(0); ++ ++failed_read: ++ ERROR("Unable to read directory block [%llx:%x]\n", next_block, ++ next_offset); ++ goto exit_loop; ++} ++ ++ ++int squashfs_2_0_supported(struct squashfs_sb_info *msblk) ++{ ++ struct squashfs_super_block *sblk = &msblk->sblk; ++ ++ msblk->iget = squashfs_iget_2; ++ msblk->read_fragment_index_table = read_fragment_index_table_2; ++ ++ sblk->bytes_used = sblk->bytes_used_2; ++ sblk->uid_start = sblk->uid_start_2; ++ sblk->guid_start = sblk->guid_start_2; ++ sblk->inode_table_start = sblk->inode_table_start_2; ++ sblk->directory_table_start = sblk->directory_table_start_2; ++ sblk->fragment_table_start = sblk->fragment_table_start_2; ++ ++ return 1; ++} +diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs.h linux-2.6.21.1.dev/fs/squashfs/squashfs.h +--- linux-2.6.21.1.old/fs/squashfs/squashfs.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/squashfs/squashfs.h 2007-05-26 19:00:37.125351152 +0200 +@@ -0,0 +1,86 @@ ++/* ++ * Squashfs - a compressed read only filesystem for Linux ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher <phillip@lougher.org.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * squashfs.h ++ */ ++ ++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY ++#undef CONFIG_SQUASHFS_1_0_COMPATIBILITY ++#endif ++ ++#ifdef SQUASHFS_TRACE ++#define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args) ++#else ++#define TRACE(s, args...) {} ++#endif ++ ++#define ERROR(s, args...) printk(KERN_ERR "SQUASHFS error: "s, ## args) ++ ++#define SERROR(s, args...) do { \ ++ if (!silent) \ ++ printk(KERN_ERR "SQUASHFS error: "s, ## args);\ ++ } while(0) ++ ++#define WARNING(s, args...) printk(KERN_WARNING "SQUASHFS: "s, ## args) ++ ++static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode) ++{ ++ return list_entry(inode, struct squashfs_inode_info, vfs_inode); ++} ++ ++#if defined(CONFIG_SQUASHFS_1_0_COMPATIBILITY ) || defined(CONFIG_SQUASHFS_2_0_COMPATIBILITY) ++#define SQSH_EXTERN ++extern unsigned int squashfs_read_data(struct super_block *s, char *buffer, ++ long long index, unsigned int length, ++ long long *next_index); ++extern int squashfs_get_cached_block(struct super_block *s, char *buffer, ++ long long block, unsigned int offset, ++ int length, long long *next_block, ++ unsigned int *next_offset); ++extern void release_cached_fragment(struct squashfs_sb_info *msblk, struct ++ squashfs_fragment_cache *fragment); ++extern struct squashfs_fragment_cache *get_cached_fragment(struct super_block ++ *s, long long start_block, ++ int length); ++extern struct address_space_operations squashfs_symlink_aops; ++extern struct address_space_operations squashfs_aops; ++extern struct address_space_operations squashfs_aops_4K; ++extern struct inode_operations squashfs_dir_inode_ops; ++#else ++#define SQSH_EXTERN static ++#endif ++ ++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY ++extern int squashfs_1_0_supported(struct squashfs_sb_info *msblk); ++#else ++static inline int squashfs_1_0_supported(struct squashfs_sb_info *msblk) ++{ ++ return 0; ++} ++#endif ++ ++#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY ++extern int squashfs_2_0_supported(struct squashfs_sb_info *msblk); ++#else ++static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk) ++{ ++ return 0; ++} ++#endif +diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs.h linux-2.6.21.1.dev/include/linux/squashfs_fs.h +--- linux-2.6.21.1.old/include/linux/squashfs_fs.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/squashfs_fs.h 2007-05-26 19:00:37.143348416 +0200 +@@ -0,0 +1,911 @@ ++#ifndef SQUASHFS_FS ++#define SQUASHFS_FS ++ ++/* ++ * Squashfs ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher <phillip@lougher.org.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * squashfs_fs.h ++ */ ++ ++#ifndef CONFIG_SQUASHFS_2_0_COMPATIBILITY ++#define CONFIG_SQUASHFS_2_0_COMPATIBILITY ++#endif ++ ++#ifdef CONFIG_SQUASHFS_VMALLOC ++#define SQUASHFS_ALLOC(a) vmalloc(a) ++#define SQUASHFS_FREE(a) vfree(a) ++#else ++#define SQUASHFS_ALLOC(a) kmalloc(a, GFP_KERNEL) ++#define SQUASHFS_FREE(a) kfree(a) ++#endif ++#define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE ++#define SQUASHFS_MAJOR 3 ++#define SQUASHFS_MINOR 0 ++#define SQUASHFS_MAGIC 0x73717368 ++#define SQUASHFS_MAGIC_SWAP 0x68737173 ++#define SQUASHFS_START 0 ++ ++/* size of metadata (inode and directory) blocks */ ++#define SQUASHFS_METADATA_SIZE 8192 ++#define SQUASHFS_METADATA_LOG 13 ++ ++/* default size of data blocks */ ++#define SQUASHFS_FILE_SIZE 65536 ++#define SQUASHFS_FILE_LOG 16 ++ ++#define SQUASHFS_FILE_MAX_SIZE 65536 ++ ++/* Max number of uids and gids */ ++#define SQUASHFS_UIDS 256 ++#define SQUASHFS_GUIDS 255 ++ ++/* Max length of filename (not 255) */ ++#define SQUASHFS_NAME_LEN 256 ++ ++#define SQUASHFS_INVALID ((long long) 0xffffffffffff) ++#define SQUASHFS_INVALID_FRAG ((unsigned int) 0xffffffff) ++#define SQUASHFS_INVALID_BLK ((long long) -1) ++#define SQUASHFS_USED_BLK ((long long) -2) ++ ++/* Filesystem flags */ ++#define SQUASHFS_NOI 0 ++#define SQUASHFS_NOD 1 ++#define SQUASHFS_CHECK 2 ++#define SQUASHFS_NOF 3 ++#define SQUASHFS_NO_FRAG 4 ++#define SQUASHFS_ALWAYS_FRAG 5 ++#define SQUASHFS_DUPLICATE 6 ++ ++#define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1) ++ ++#define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_NOI) ++ ++#define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_NOD) ++ ++#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_NOF) ++ ++#define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_NO_FRAG) ++ ++#define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_ALWAYS_FRAG) ++ ++#define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_DUPLICATE) ++ ++#define SQUASHFS_CHECK_DATA(flags) SQUASHFS_BIT(flags, \ ++ SQUASHFS_CHECK) ++ ++#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, \ ++ duplicate_checking) (noi | (nod << 1) | (check_data << 2) \ ++ | (nof << 3) | (no_frag << 4) | (always_frag << 5) | \ ++ (duplicate_checking << 6)) ++ ++/* Max number of types and file types */ ++#define SQUASHFS_DIR_TYPE 1 ++#define SQUASHFS_FILE_TYPE 2 ++#define SQUASHFS_SYMLINK_TYPE 3 ++#define SQUASHFS_BLKDEV_TYPE 4 ++#define SQUASHFS_CHRDEV_TYPE 5 ++#define SQUASHFS_FIFO_TYPE 6 ++#define SQUASHFS_SOCKET_TYPE 7 ++#define SQUASHFS_LDIR_TYPE 8 ++#define SQUASHFS_LREG_TYPE 9 ++ ++/* 1.0 filesystem type definitions */ ++#define SQUASHFS_TYPES 5 ++#define SQUASHFS_IPC_TYPE 0 ++ ++/* Flag whether block is compressed or uncompressed, bit is set if block is ++ * uncompressed */ ++#define SQUASHFS_COMPRESSED_BIT (1 << 15) ++ ++#define SQUASHFS_COMPRESSED_SIZE(B) (((B) & ~SQUASHFS_COMPRESSED_BIT) ? \ ++ (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT) ++ ++#define SQUASHFS_COMPRESSED(B) (!((B) & SQUASHFS_COMPRESSED_BIT)) ++ ++#define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24) ++ ++#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) (((B) & \ ++ ~SQUASHFS_COMPRESSED_BIT_BLOCK) ? (B) & \ ++ ~SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT_BLOCK) ++ ++#define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK)) ++ ++/* ++ * Inode number ops. Inodes consist of a compressed block number, and an ++ * uncompressed offset within that block ++ */ ++#define SQUASHFS_INODE_BLK(a) ((unsigned int) ((a) >> 16)) ++ ++#define SQUASHFS_INODE_OFFSET(a) ((unsigned int) ((a) & 0xffff)) ++ ++#define SQUASHFS_MKINODE(A, B) ((squashfs_inode_t)(((squashfs_inode_t) (A)\ ++ << 16) + (B))) ++ ++/* Compute 32 bit VFS inode number from squashfs inode number */ ++#define SQUASHFS_MK_VFS_INODE(a, b) ((unsigned int) (((a) << 8) + \ ++ ((b) >> 2) + 1)) ++/* XXX */ ++ ++/* Translate between VFS mode and squashfs mode */ ++#define SQUASHFS_MODE(a) ((a) & 0xfff) ++ ++/* fragment and fragment table defines */ ++#define SQUASHFS_FRAGMENT_BYTES(A) (A * sizeof(struct squashfs_fragment_entry)) ++ ++#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / \ ++ SQUASHFS_METADATA_SIZE) ++ ++#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % \ ++ SQUASHFS_METADATA_SIZE) ++ ++#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + \ ++ SQUASHFS_METADATA_SIZE - 1) / \ ++ SQUASHFS_METADATA_SIZE) ++ ++#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) *\ ++ sizeof(long long)) ++ ++/* cached data constants for filesystem */ ++#define SQUASHFS_CACHED_BLKS 8 ++ ++#define SQUASHFS_MAX_FILE_SIZE_LOG 64 ++ ++#define SQUASHFS_MAX_FILE_SIZE ((long long) 1 << \ ++ (SQUASHFS_MAX_FILE_SIZE_LOG - 2)) ++ ++#define SQUASHFS_MARKER_BYTE 0xff ++ ++/* meta index cache */ ++#define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int)) ++#define SQUASHFS_META_ENTRIES 31 ++#define SQUASHFS_META_NUMBER 8 ++#define SQUASHFS_SLOTS 4 ++ ++struct meta_entry { ++ long long data_block; ++ unsigned int index_block; ++ unsigned short offset; ++ unsigned short pad; ++}; ++ ++struct meta_index { ++ unsigned int inode_number; ++ unsigned int offset; ++ unsigned short entries; ++ unsigned short skip; ++ unsigned short locked; ++ unsigned short pad; ++ struct meta_entry meta_entry[SQUASHFS_META_ENTRIES]; ++}; ++ ++ ++/* ++ * definitions for structures on disk ++ */ ++ ++typedef long long squashfs_block_t; ++typedef long long squashfs_inode_t; ++ ++struct squashfs_super_block { ++ unsigned int s_magic; ++ unsigned int inodes; ++ unsigned int bytes_used_2; ++ unsigned int uid_start_2; ++ unsigned int guid_start_2; ++ unsigned int inode_table_start_2; ++ unsigned int directory_table_start_2; ++ unsigned int s_major:16; ++ unsigned int s_minor:16; ++ unsigned int block_size_1:16; ++ unsigned int block_log:16; ++ unsigned int flags:8; ++ unsigned int no_uids:8; ++ unsigned int no_guids:8; ++ unsigned int mkfs_time /* time of filesystem creation */; ++ squashfs_inode_t root_inode; ++ unsigned int block_size; ++ unsigned int fragments; ++ unsigned int fragment_table_start_2; ++ long long bytes_used; ++ long long uid_start; ++ long long guid_start; ++ long long inode_table_start; ++ long long directory_table_start; ++ long long fragment_table_start; ++ long long unused; ++} __attribute__ ((packed)); ++ ++struct squashfs_dir_index { ++ unsigned int index; ++ unsigned int start_block; ++ unsigned char size; ++ unsigned char name[0]; ++} __attribute__ ((packed)); ++ ++#define SQUASHFS_BASE_INODE_HEADER \ ++ unsigned int inode_type:4; \ ++ unsigned int mode:12; \ ++ unsigned int uid:8; \ ++ unsigned int guid:8; \ ++ unsigned int mtime; \ ++ unsigned int inode_number; ++ ++struct squashfs_base_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++} __attribute__ ((packed)); ++ ++struct squashfs_ipc_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; ++} __attribute__ ((packed)); ++ ++struct squashfs_dev_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; ++ unsigned short rdev; ++} __attribute__ ((packed)); ++ ++struct squashfs_symlink_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; ++ unsigned short symlink_size; ++ char symlink[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_reg_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ squashfs_block_t start_block; ++ unsigned int fragment; ++ unsigned int offset; ++ unsigned int file_size; ++ unsigned short block_list[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_lreg_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; ++ squashfs_block_t start_block; ++ unsigned int fragment; ++ unsigned int offset; ++ long long file_size; ++ unsigned short block_list[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_dir_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; ++ unsigned int file_size:19; ++ unsigned int offset:13; ++ unsigned int start_block; ++ unsigned int parent_inode; ++} __attribute__ ((packed)); ++ ++struct squashfs_ldir_inode_header { ++ SQUASHFS_BASE_INODE_HEADER; ++ unsigned int nlink; ++ unsigned int file_size:27; ++ unsigned int offset:13; ++ unsigned int start_block; ++ unsigned int i_count:16; ++ unsigned int parent_inode; ++ struct squashfs_dir_index index[0]; ++} __attribute__ ((packed)); ++ ++union squashfs_inode_header { ++ struct squashfs_base_inode_header base; ++ struct squashfs_dev_inode_header dev; ++ struct squashfs_symlink_inode_header symlink; ++ struct squashfs_reg_inode_header reg; ++ struct squashfs_lreg_inode_header lreg; ++ struct squashfs_dir_inode_header dir; ++ struct squashfs_ldir_inode_header ldir; ++ struct squashfs_ipc_inode_header ipc; ++}; ++ ++struct squashfs_dir_entry { ++ unsigned int offset:13; ++ unsigned int type:3; ++ unsigned int size:8; ++ int inode_number:16; ++ char name[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_dir_header { ++ unsigned int count:8; ++ unsigned int start_block; ++ unsigned int inode_number; ++} __attribute__ ((packed)); ++ ++struct squashfs_fragment_entry { ++ long long start_block; ++ unsigned int size; ++ unsigned int unused; ++} __attribute__ ((packed)); ++ ++extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen); ++extern int squashfs_uncompress_init(void); ++extern int squashfs_uncompress_exit(void); ++ ++/* ++ * macros to convert each packed bitfield structure from little endian to big ++ * endian and vice versa. These are needed when creating or using a filesystem ++ * on a machine with different byte ordering to the target architecture. ++ * ++ */ ++ ++#define SQUASHFS_SWAP_START \ ++ int bits;\ ++ int b_pos;\ ++ unsigned long long val;\ ++ unsigned char *s;\ ++ unsigned char *d; ++ ++#define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_super_block));\ ++ SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\ ++ SQUASHFS_SWAP((s)->inodes, d, 32, 32);\ ++ SQUASHFS_SWAP((s)->bytes_used_2, d, 64, 32);\ ++ SQUASHFS_SWAP((s)->uid_start_2, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->guid_start_2, d, 128, 32);\ ++ SQUASHFS_SWAP((s)->inode_table_start_2, d, 160, 32);\ ++ SQUASHFS_SWAP((s)->directory_table_start_2, d, 192, 32);\ ++ SQUASHFS_SWAP((s)->s_major, d, 224, 16);\ ++ SQUASHFS_SWAP((s)->s_minor, d, 240, 16);\ ++ SQUASHFS_SWAP((s)->block_size_1, d, 256, 16);\ ++ SQUASHFS_SWAP((s)->block_log, d, 272, 16);\ ++ SQUASHFS_SWAP((s)->flags, d, 288, 8);\ ++ SQUASHFS_SWAP((s)->no_uids, d, 296, 8);\ ++ SQUASHFS_SWAP((s)->no_guids, d, 304, 8);\ ++ SQUASHFS_SWAP((s)->mkfs_time, d, 312, 32);\ ++ SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\ ++ SQUASHFS_SWAP((s)->block_size, d, 408, 32);\ ++ SQUASHFS_SWAP((s)->fragments, d, 440, 32);\ ++ SQUASHFS_SWAP((s)->fragment_table_start_2, d, 472, 32);\ ++ SQUASHFS_SWAP((s)->bytes_used, d, 504, 64);\ ++ SQUASHFS_SWAP((s)->uid_start, d, 568, 64);\ ++ SQUASHFS_SWAP((s)->guid_start, d, 632, 64);\ ++ SQUASHFS_SWAP((s)->inode_table_start, d, 696, 64);\ ++ SQUASHFS_SWAP((s)->directory_table_start, d, 760, 64);\ ++ SQUASHFS_SWAP((s)->fragment_table_start, d, 824, 64);\ ++ SQUASHFS_SWAP((s)->unused, d, 888, 64);\ ++} ++ ++#define SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\ ++ SQUASHFS_MEMSET(s, d, n);\ ++ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ ++ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ ++ SQUASHFS_SWAP((s)->uid, d, 16, 8);\ ++ SQUASHFS_SWAP((s)->guid, d, 24, 8);\ ++ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ ++ SQUASHFS_SWAP((s)->inode_number, d, 64, 32); ++ ++#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\ ++} ++ ++#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_ipc_inode_header))\ ++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ ++} ++ ++#define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_dev_inode_header)); \ ++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->rdev, d, 128, 16);\ ++} ++ ++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_symlink_inode_header));\ ++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->symlink_size, d, 128, 16);\ ++} ++ ++#define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_reg_inode_header));\ ++ SQUASHFS_SWAP((s)->start_block, d, 96, 64);\ ++ SQUASHFS_SWAP((s)->fragment, d, 160, 32);\ ++ SQUASHFS_SWAP((s)->offset, d, 192, 32);\ ++ SQUASHFS_SWAP((s)->file_size, d, 224, 32);\ ++} ++ ++#define SQUASHFS_SWAP_LREG_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_lreg_inode_header));\ ++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 128, 64);\ ++ SQUASHFS_SWAP((s)->fragment, d, 192, 32);\ ++ SQUASHFS_SWAP((s)->offset, d, 224, 32);\ ++ SQUASHFS_SWAP((s)->file_size, d, 256, 64);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_dir_inode_header));\ ++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->file_size, d, 128, 19);\ ++ SQUASHFS_SWAP((s)->offset, d, 147, 13);\ ++ SQUASHFS_SWAP((s)->start_block, d, 160, 32);\ ++ SQUASHFS_SWAP((s)->parent_inode, d, 192, 32);\ ++} ++ ++#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ ++ sizeof(struct squashfs_ldir_inode_header));\ ++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->file_size, d, 128, 27);\ ++ SQUASHFS_SWAP((s)->offset, d, 155, 13);\ ++ SQUASHFS_SWAP((s)->start_block, d, 168, 32);\ ++ SQUASHFS_SWAP((s)->i_count, d, 200, 16);\ ++ SQUASHFS_SWAP((s)->parent_inode, d, 216, 32);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index));\ ++ SQUASHFS_SWAP((s)->index, d, 0, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 32, 32);\ ++ SQUASHFS_SWAP((s)->size, d, 64, 8);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_HEADER(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header));\ ++ SQUASHFS_SWAP((s)->count, d, 0, 8);\ ++ SQUASHFS_SWAP((s)->start_block, d, 8, 32);\ ++ SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry));\ ++ SQUASHFS_SWAP((s)->offset, d, 0, 13);\ ++ SQUASHFS_SWAP((s)->type, d, 13, 3);\ ++ SQUASHFS_SWAP((s)->size, d, 16, 8);\ ++ SQUASHFS_SWAP((s)->inode_number, d, 24, 16);\ ++} ++ ++#define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry));\ ++ SQUASHFS_SWAP((s)->start_block, d, 0, 64);\ ++ SQUASHFS_SWAP((s)->size, d, 64, 32);\ ++} ++ ++#define SQUASHFS_SWAP_SHORTS(s, d, n) {\ ++ int entry;\ ++ int bit_position;\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, n * 2);\ ++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ ++ 16)\ ++ SQUASHFS_SWAP(s[entry], d, bit_position, 16);\ ++} ++ ++#define SQUASHFS_SWAP_INTS(s, d, n) {\ ++ int entry;\ ++ int bit_position;\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, n * 4);\ ++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ ++ 32)\ ++ SQUASHFS_SWAP(s[entry], d, bit_position, 32);\ ++} ++ ++#define SQUASHFS_SWAP_LONG_LONGS(s, d, n) {\ ++ int entry;\ ++ int bit_position;\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, n * 8);\ ++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ ++ 64)\ ++ SQUASHFS_SWAP(s[entry], d, bit_position, 64);\ ++} ++ ++#define SQUASHFS_SWAP_DATA(s, d, n, bits) {\ ++ int entry;\ ++ int bit_position;\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, n * bits / 8);\ ++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ ++ bits)\ ++ SQUASHFS_SWAP(s[entry], d, bit_position, bits);\ ++} ++ ++#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n) ++ ++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY ++ ++struct squashfs_base_inode_header_1 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:4; /* index into uid table */ ++ unsigned int guid:4; /* index into guid table */ ++} __attribute__ ((packed)); ++ ++struct squashfs_ipc_inode_header_1 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:4; /* index into uid table */ ++ unsigned int guid:4; /* index into guid table */ ++ unsigned int type:4; ++ unsigned int offset:4; ++} __attribute__ ((packed)); ++ ++struct squashfs_dev_inode_header_1 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:4; /* index into uid table */ ++ unsigned int guid:4; /* index into guid table */ ++ unsigned short rdev; ++} __attribute__ ((packed)); ++ ++struct squashfs_symlink_inode_header_1 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:4; /* index into uid table */ ++ unsigned int guid:4; /* index into guid table */ ++ unsigned short symlink_size; ++ char symlink[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_reg_inode_header_1 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:4; /* index into uid table */ ++ unsigned int guid:4; /* index into guid table */ ++ unsigned int mtime; ++ unsigned int start_block; ++ unsigned int file_size:32; ++ unsigned short block_list[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_dir_inode_header_1 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:4; /* index into uid table */ ++ unsigned int guid:4; /* index into guid table */ ++ unsigned int file_size:19; ++ unsigned int offset:13; ++ unsigned int mtime; ++ unsigned int start_block:24; ++} __attribute__ ((packed)); ++ ++#define SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n) \ ++ SQUASHFS_MEMSET(s, d, n);\ ++ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ ++ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ ++ SQUASHFS_SWAP((s)->uid, d, 16, 4);\ ++ SQUASHFS_SWAP((s)->guid, d, 20, 4); ++ ++#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n)\ ++} ++ ++#define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ ++ sizeof(struct squashfs_ipc_inode_header_1));\ ++ SQUASHFS_SWAP((s)->type, d, 24, 4);\ ++ SQUASHFS_SWAP((s)->offset, d, 28, 4);\ ++} ++ ++#define SQUASHFS_SWAP_DEV_INODE_HEADER_1(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ ++ sizeof(struct squashfs_dev_inode_header_1));\ ++ SQUASHFS_SWAP((s)->rdev, d, 24, 16);\ ++} ++ ++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ ++ sizeof(struct squashfs_symlink_inode_header_1));\ ++ SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\ ++} ++ ++#define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ ++ sizeof(struct squashfs_reg_inode_header_1));\ ++ SQUASHFS_SWAP((s)->mtime, d, 24, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 56, 32);\ ++ SQUASHFS_SWAP((s)->file_size, d, 88, 32);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ ++ sizeof(struct squashfs_dir_inode_header_1));\ ++ SQUASHFS_SWAP((s)->file_size, d, 24, 19);\ ++ SQUASHFS_SWAP((s)->offset, d, 43, 13);\ ++ SQUASHFS_SWAP((s)->mtime, d, 56, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 88, 24);\ ++} ++ ++#endif ++ ++#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY ++ ++struct squashfs_dir_index_2 { ++ unsigned int index:27; ++ unsigned int start_block:29; ++ unsigned char size; ++ unsigned char name[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_base_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++} __attribute__ ((packed)); ++ ++struct squashfs_ipc_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++} __attribute__ ((packed)); ++ ++struct squashfs_dev_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++ unsigned short rdev; ++} __attribute__ ((packed)); ++ ++struct squashfs_symlink_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++ unsigned short symlink_size; ++ char symlink[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_reg_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++ unsigned int mtime; ++ unsigned int start_block; ++ unsigned int fragment; ++ unsigned int offset; ++ unsigned int file_size:32; ++ unsigned short block_list[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_dir_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++ unsigned int file_size:19; ++ unsigned int offset:13; ++ unsigned int mtime; ++ unsigned int start_block:24; ++} __attribute__ ((packed)); ++ ++struct squashfs_ldir_inode_header_2 { ++ unsigned int inode_type:4; ++ unsigned int mode:12; /* protection */ ++ unsigned int uid:8; /* index into uid table */ ++ unsigned int guid:8; /* index into guid table */ ++ unsigned int file_size:27; ++ unsigned int offset:13; ++ unsigned int mtime; ++ unsigned int start_block:24; ++ unsigned int i_count:16; ++ struct squashfs_dir_index_2 index[0]; ++} __attribute__ ((packed)); ++ ++union squashfs_inode_header_2 { ++ struct squashfs_base_inode_header_2 base; ++ struct squashfs_dev_inode_header_2 dev; ++ struct squashfs_symlink_inode_header_2 symlink; ++ struct squashfs_reg_inode_header_2 reg; ++ struct squashfs_dir_inode_header_2 dir; ++ struct squashfs_ldir_inode_header_2 ldir; ++ struct squashfs_ipc_inode_header_2 ipc; ++}; ++ ++struct squashfs_dir_header_2 { ++ unsigned int count:8; ++ unsigned int start_block:24; ++} __attribute__ ((packed)); ++ ++struct squashfs_dir_entry_2 { ++ unsigned int offset:13; ++ unsigned int type:3; ++ unsigned int size:8; ++ char name[0]; ++} __attribute__ ((packed)); ++ ++struct squashfs_fragment_entry_2 { ++ unsigned int start_block; ++ unsigned int size; ++} __attribute__ ((packed)); ++ ++#define SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\ ++ SQUASHFS_MEMSET(s, d, n);\ ++ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ ++ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ ++ SQUASHFS_SWAP((s)->uid, d, 16, 8);\ ++ SQUASHFS_SWAP((s)->guid, d, 24, 8);\ ++ ++#define SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, n) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\ ++} ++ ++#define SQUASHFS_SWAP_IPC_INODE_HEADER_2(s, d) \ ++ SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, sizeof(struct squashfs_ipc_inode_header_2)) ++ ++#define SQUASHFS_SWAP_DEV_INODE_HEADER_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ ++ sizeof(struct squashfs_dev_inode_header_2)); \ ++ SQUASHFS_SWAP((s)->rdev, d, 32, 16);\ ++} ++ ++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ ++ sizeof(struct squashfs_symlink_inode_header_2));\ ++ SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\ ++} ++ ++#define SQUASHFS_SWAP_REG_INODE_HEADER_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ ++ sizeof(struct squashfs_reg_inode_header_2));\ ++ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 64, 32);\ ++ SQUASHFS_SWAP((s)->fragment, d, 96, 32);\ ++ SQUASHFS_SWAP((s)->offset, d, 128, 32);\ ++ SQUASHFS_SWAP((s)->file_size, d, 160, 32);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_INODE_HEADER_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ ++ sizeof(struct squashfs_dir_inode_header_2));\ ++ SQUASHFS_SWAP((s)->file_size, d, 32, 19);\ ++ SQUASHFS_SWAP((s)->offset, d, 51, 13);\ ++ SQUASHFS_SWAP((s)->mtime, d, 64, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 96, 24);\ ++} ++ ++#define SQUASHFS_SWAP_LDIR_INODE_HEADER_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ ++ sizeof(struct squashfs_ldir_inode_header_2));\ ++ SQUASHFS_SWAP((s)->file_size, d, 32, 27);\ ++ SQUASHFS_SWAP((s)->offset, d, 59, 13);\ ++ SQUASHFS_SWAP((s)->mtime, d, 72, 32);\ ++ SQUASHFS_SWAP((s)->start_block, d, 104, 24);\ ++ SQUASHFS_SWAP((s)->i_count, d, 128, 16);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_INDEX_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index_2));\ ++ SQUASHFS_SWAP((s)->index, d, 0, 27);\ ++ SQUASHFS_SWAP((s)->start_block, d, 27, 29);\ ++ SQUASHFS_SWAP((s)->size, d, 56, 8);\ ++} ++#define SQUASHFS_SWAP_DIR_HEADER_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header_2));\ ++ SQUASHFS_SWAP((s)->count, d, 0, 8);\ ++ SQUASHFS_SWAP((s)->start_block, d, 8, 24);\ ++} ++ ++#define SQUASHFS_SWAP_DIR_ENTRY_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry_2));\ ++ SQUASHFS_SWAP((s)->offset, d, 0, 13);\ ++ SQUASHFS_SWAP((s)->type, d, 13, 3);\ ++ SQUASHFS_SWAP((s)->size, d, 16, 8);\ ++} ++ ++#define SQUASHFS_SWAP_FRAGMENT_ENTRY_2(s, d) {\ ++ SQUASHFS_SWAP_START\ ++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry_2));\ ++ SQUASHFS_SWAP((s)->start_block, d, 0, 32);\ ++ SQUASHFS_SWAP((s)->size, d, 32, 32);\ ++} ++ ++#define SQUASHFS_SWAP_FRAGMENT_INDEXES_2(s, d, n) SQUASHFS_SWAP_INTS(s, d, n) ++ ++/* fragment and fragment table defines */ ++#define SQUASHFS_FRAGMENT_BYTES_2(A) (A * sizeof(struct squashfs_fragment_entry_2)) ++ ++#define SQUASHFS_FRAGMENT_INDEX_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) / \ ++ SQUASHFS_METADATA_SIZE) ++ ++#define SQUASHFS_FRAGMENT_INDEX_OFFSET_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) % \ ++ SQUASHFS_METADATA_SIZE) ++ ++#define SQUASHFS_FRAGMENT_INDEXES_2(A) ((SQUASHFS_FRAGMENT_BYTES_2(A) + \ ++ SQUASHFS_METADATA_SIZE - 1) / \ ++ SQUASHFS_METADATA_SIZE) ++ ++#define SQUASHFS_FRAGMENT_INDEX_BYTES_2(A) (SQUASHFS_FRAGMENT_INDEXES_2(A) *\ ++ sizeof(int)) ++ ++#endif ++ ++#ifdef __KERNEL__ ++ ++/* ++ * macros used to swap each structure entry, taking into account ++ * bitfields and different bitfield placing conventions on differing ++ * architectures ++ */ ++ ++#include <asm/byteorder.h> ++ ++#ifdef __BIG_ENDIAN ++ /* convert from little endian to big endian */ ++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ ++ tbits, b_pos) ++#else ++ /* convert from big endian to little endian */ ++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ ++ tbits, 64 - tbits - b_pos) ++#endif ++ ++#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\ ++ b_pos = pos % 8;\ ++ val = 0;\ ++ s = (unsigned char *)p + (pos / 8);\ ++ d = ((unsigned char *) &val) + 7;\ ++ for(bits = 0; bits < (tbits + b_pos); bits += 8) \ ++ *d-- = *s++;\ ++ value = (val >> (SHIFT))/* & ((1 << tbits) - 1)*/;\ ++} ++ ++#define SQUASHFS_MEMSET(s, d, n) memset(s, 0, n); ++ ++#endif ++#endif +diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs_i.h linux-2.6.21.1.dev/include/linux/squashfs_fs_i.h +--- linux-2.6.21.1.old/include/linux/squashfs_fs_i.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/squashfs_fs_i.h 2007-05-26 19:00:37.143348416 +0200 +@@ -0,0 +1,45 @@ ++#ifndef SQUASHFS_FS_I ++#define SQUASHFS_FS_I ++/* ++ * Squashfs ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher <phillip@lougher.org.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * squashfs_fs_i.h ++ */ ++ ++struct squashfs_inode_info { ++ long long start_block; ++ unsigned int offset; ++ union { ++ struct { ++ long long fragment_start_block; ++ unsigned int fragment_size; ++ unsigned int fragment_offset; ++ long long block_list_start; ++ } s1; ++ struct { ++ long long directory_index_start; ++ unsigned int directory_index_offset; ++ unsigned int directory_index_count; ++ unsigned int parent_inode; ++ } s2; ++ } u; ++ struct inode vfs_inode; ++}; ++#endif +diff -urN linux-2.6.21.1.old/include/linux/squashfs_fs_sb.h linux-2.6.21.1.dev/include/linux/squashfs_fs_sb.h +--- linux-2.6.21.1.old/include/linux/squashfs_fs_sb.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/squashfs_fs_sb.h 2007-05-26 19:00:37.144348264 +0200 +@@ -0,0 +1,74 @@ ++#ifndef SQUASHFS_FS_SB ++#define SQUASHFS_FS_SB ++/* ++ * Squashfs ++ * ++ * Copyright (c) 2002, 2003, 2004, 2005, 2006 ++ * Phillip Lougher <phillip@lougher.org.uk> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2, ++ * or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ * ++ * squashfs_fs_sb.h ++ */ ++ ++#include <linux/squashfs_fs.h> ++ ++struct squashfs_cache { ++ long long block; ++ int length; ++ long long next_index; ++ char *data; ++}; ++ ++struct squashfs_fragment_cache { ++ long long block; ++ int length; ++ unsigned int locked; ++ char *data; ++}; ++ ++struct squashfs_sb_info { ++ struct squashfs_super_block sblk; ++ int devblksize; ++ int devblksize_log2; ++ int swap; ++ struct squashfs_cache *block_cache; ++ struct squashfs_fragment_cache *fragment; ++ int next_cache; ++ int next_fragment; ++ int next_meta_index; ++ unsigned int *uid; ++ unsigned int *guid; ++ long long *fragment_index; ++ unsigned int *fragment_index_2; ++ unsigned int read_size; ++ char *read_data; ++ char *read_page; ++ struct semaphore read_data_mutex; ++ struct semaphore read_page_mutex; ++ struct semaphore block_cache_mutex; ++ struct semaphore fragment_mutex; ++ struct semaphore meta_index_mutex; ++ wait_queue_head_t waitq; ++ wait_queue_head_t fragment_wait_queue; ++ struct meta_index *meta_index; ++ struct inode *(*iget)(struct super_block *s, squashfs_inode_t \ ++ inode); ++ long long (*read_blocklist)(struct inode *inode, int \ ++ index, int readahead_blks, char *block_list, \ ++ unsigned short **block_p, unsigned int *bsize); ++ int (*read_fragment_index_table)(struct super_block *s); ++}; ++#endif +diff -urN linux-2.6.21.1.old/init/do_mounts_rd.c linux-2.6.21.1.dev/init/do_mounts_rd.c +--- linux-2.6.21.1.old/init/do_mounts_rd.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/init/do_mounts_rd.c 2007-05-26 19:00:37.144348264 +0200 +@@ -5,6 +5,7 @@ + #include <linux/ext2_fs.h> + #include <linux/romfs_fs.h> + #include <linux/cramfs_fs.h> ++#include <linux/squashfs_fs.h> + #include <linux/initrd.h> + #include <linux/string.h> + +@@ -39,6 +40,7 @@ + * numbers could not be found. + * + * We currently check for the following magic numbers: ++ * squashfs + * minix + * ext2 + * romfs +@@ -53,6 +55,7 @@ + struct ext2_super_block *ext2sb; + struct romfs_super_block *romfsb; + struct cramfs_super *cramfsb; ++ struct squashfs_super_block *squashfsb; + int nblocks = -1; + unsigned char *buf; + +@@ -64,6 +67,7 @@ + ext2sb = (struct ext2_super_block *) buf; + romfsb = (struct romfs_super_block *) buf; + cramfsb = (struct cramfs_super *) buf; ++ squashfsb = (struct squashfs_super_block *) buf; + memset(buf, 0xe5, size); + + /* +@@ -101,6 +105,15 @@ + goto done; + } + ++ /* squashfs is at block zero too */ ++ if (squashfsb->s_magic == SQUASHFS_MAGIC) { ++ printk(KERN_NOTICE ++ "RAMDISK: squashfs filesystem found at block %d\n", ++ start_block); ++ nblocks = (squashfsb->bytes_used+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS; ++ goto done; ++ } ++ + /* + * Read block 1 to test for minix and ext2 superblock + */ diff --git a/target/linux/generic-2.6/patches-2.6.22/002-lzma_decompress.patch b/target/linux/generic-2.6/patches-2.6.22/002-lzma_decompress.patch new file mode 100644 index 0000000000..d141b6347b --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/002-lzma_decompress.patch @@ -0,0 +1,791 @@ +diff -urN linux-2.6.21.1.old/include/linux/LzmaDecode.h linux-2.6.21.1.dev/include/linux/LzmaDecode.h +--- linux-2.6.21.1.old/include/linux/LzmaDecode.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/LzmaDecode.h 2007-05-26 19:03:45.705682584 +0200 +@@ -0,0 +1,100 @@ ++/* ++ LzmaDecode.h ++ LZMA Decoder interface ++ ++ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25) ++ http://www.7-zip.org/ ++ ++ LZMA SDK is licensed under two licenses: ++ 1) GNU Lesser General Public License (GNU LGPL) ++ 2) Common Public License (CPL) ++ It means that you can select one of these two licenses and ++ follow rules of that license. ++ ++ SPECIAL EXCEPTION: ++ Igor Pavlov, as the author of this code, expressly permits you to ++ statically or dynamically link your code (or bind by name) to the ++ interfaces of this file without subjecting your linked code to the ++ terms of the CPL or GNU LGPL. Any modifications or additions ++ to this file, however, are subject to the LGPL or CPL terms. ++*/ ++ ++#ifndef __LZMADECODE_H ++#define __LZMADECODE_H ++ ++/* #define _LZMA_IN_CB */ ++/* Use callback for input data */ ++ ++/* #define _LZMA_OUT_READ */ ++/* Use read function for output data */ ++ ++/* #define _LZMA_PROB32 */ ++/* It can increase speed on some 32-bit CPUs, ++ but memory usage will be doubled in that case */ ++ ++/* #define _LZMA_LOC_OPT */ ++/* Enable local speed optimizations inside code */ ++ ++#ifndef UInt32 ++#ifdef _LZMA_UINT32_IS_ULONG ++#define UInt32 unsigned long ++#else ++#define UInt32 unsigned int ++#endif ++#endif ++ ++#ifdef _LZMA_PROB32 ++#define CProb UInt32 ++#else ++#define CProb unsigned short ++#endif ++ ++#define LZMA_RESULT_OK 0 ++#define LZMA_RESULT_DATA_ERROR 1 ++#define LZMA_RESULT_NOT_ENOUGH_MEM 2 ++ ++#ifdef _LZMA_IN_CB ++typedef struct _ILzmaInCallback ++{ ++ int (*Read)(void *object, unsigned char **buffer, UInt32 *bufferSize); ++} ILzmaInCallback; ++#endif ++ ++#define LZMA_BASE_SIZE 1846 ++#define LZMA_LIT_SIZE 768 ++ ++/* ++bufferSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp)))* sizeof(CProb) ++bufferSize += 100 in case of _LZMA_OUT_READ ++by default CProb is unsigned short, ++but if specify _LZMA_PROB_32, CProb will be UInt32(unsigned int) ++*/ ++ ++#ifdef _LZMA_OUT_READ ++int LzmaDecoderInit( ++ unsigned char *buffer, UInt32 bufferSize, ++ int lc, int lp, int pb, ++ unsigned char *dictionary, UInt32 dictionarySize, ++ #ifdef _LZMA_IN_CB ++ ILzmaInCallback *inCallback ++ #else ++ unsigned char *inStream, UInt32 inSize ++ #endif ++); ++#endif ++ ++int LzmaDecode( ++ unsigned char *buffer, ++ #ifndef _LZMA_OUT_READ ++ UInt32 bufferSize, ++ int lc, int lp, int pb, ++ #ifdef _LZMA_IN_CB ++ ILzmaInCallback *inCallback, ++ #else ++ unsigned char *inStream, UInt32 inSize, ++ #endif ++ #endif ++ unsigned char *outStream, UInt32 outSize, ++ UInt32 *outSizeProcessed); ++ ++#endif +diff -urN linux-2.6.21.1.old/lib/LzmaDecode.c linux-2.6.21.1.dev/lib/LzmaDecode.c +--- linux-2.6.21.1.old/lib/LzmaDecode.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/lib/LzmaDecode.c 2007-05-26 19:03:45.706682432 +0200 +@@ -0,0 +1,663 @@ ++/* ++ LzmaDecode.c ++ LZMA Decoder ++ ++ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25) ++ http://www.7-zip.org/ ++ ++ LZMA SDK is licensed under two licenses: ++ 1) GNU Lesser General Public License (GNU LGPL) ++ 2) Common Public License (CPL) ++ It means that you can select one of these two licenses and ++ follow rules of that license. ++ ++ SPECIAL EXCEPTION: ++ Igor Pavlov, as the author of this code, expressly permits you to ++ statically or dynamically link your code (or bind by name) to the ++ interfaces of this file without subjecting your linked code to the ++ terms of the CPL or GNU LGPL. Any modifications or additions ++ to this file, however, are subject to the LGPL or CPL terms. ++*/ ++ ++#include <linux/LzmaDecode.h> ++ ++#ifndef Byte ++#define Byte unsigned char ++#endif ++ ++#define kNumTopBits 24 ++#define kTopValue ((UInt32)1 << kNumTopBits) ++ ++#define kNumBitModelTotalBits 11 ++#define kBitModelTotal (1 << kNumBitModelTotalBits) ++#define kNumMoveBits 5 ++ ++typedef struct _CRangeDecoder ++{ ++ Byte *Buffer; ++ Byte *BufferLim; ++ UInt32 Range; ++ UInt32 Code; ++ #ifdef _LZMA_IN_CB ++ ILzmaInCallback *InCallback; ++ int Result; ++ #endif ++ int ExtraBytes; ++} CRangeDecoder; ++ ++Byte RangeDecoderReadByte(CRangeDecoder *rd) ++{ ++ if (rd->Buffer == rd->BufferLim) ++ { ++ #ifdef _LZMA_IN_CB ++ UInt32 size; ++ rd->Result = rd->InCallback->Read(rd->InCallback, &rd->Buffer, &size); ++ rd->BufferLim = rd->Buffer + size; ++ if (size == 0) ++ #endif ++ { ++ rd->ExtraBytes = 1; ++ return 0xFF; ++ } ++ } ++ return (*rd->Buffer++); ++} ++ ++/* #define ReadByte (*rd->Buffer++) */ ++#define ReadByte (RangeDecoderReadByte(rd)) ++ ++void RangeDecoderInit(CRangeDecoder *rd, ++ #ifdef _LZMA_IN_CB ++ ILzmaInCallback *inCallback ++ #else ++ Byte *stream, UInt32 bufferSize ++ #endif ++ ) ++{ ++ int i; ++ #ifdef _LZMA_IN_CB ++ rd->InCallback = inCallback; ++ rd->Buffer = rd->BufferLim = 0; ++ #else ++ rd->Buffer = stream; ++ rd->BufferLim = stream + bufferSize; ++ #endif ++ rd->ExtraBytes = 0; ++ rd->Code = 0; ++ rd->Range = (0xFFFFFFFF); ++ for(i = 0; i < 5; i++) ++ rd->Code = (rd->Code << 8) | ReadByte; ++} ++ ++#define RC_INIT_VAR UInt32 range = rd->Range; UInt32 code = rd->Code; ++#define RC_FLUSH_VAR rd->Range = range; rd->Code = code; ++#define RC_NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | ReadByte; } ++ ++UInt32 RangeDecoderDecodeDirectBits(CRangeDecoder *rd, int numTotalBits) ++{ ++ RC_INIT_VAR ++ UInt32 result = 0; ++ int i; ++ for (i = numTotalBits; i > 0; i--) ++ { ++ /* UInt32 t; */ ++ range >>= 1; ++ ++ result <<= 1; ++ if (code >= range) ++ { ++ code -= range; ++ result |= 1; ++ } ++ /* ++ t = (code - range) >> 31; ++ t &= 1; ++ code -= range & (t - 1); ++ result = (result + result) | (1 - t); ++ */ ++ RC_NORMALIZE ++ } ++ RC_FLUSH_VAR ++ return result; ++} ++ ++int RangeDecoderBitDecode(CProb *prob, CRangeDecoder *rd) ++{ ++ UInt32 bound = (rd->Range >> kNumBitModelTotalBits) * *prob; ++ if (rd->Code < bound) ++ { ++ rd->Range = bound; ++ *prob += (kBitModelTotal - *prob) >> kNumMoveBits; ++ if (rd->Range < kTopValue) ++ { ++ rd->Code = (rd->Code << 8) | ReadByte; ++ rd->Range <<= 8; ++ } ++ return 0; ++ } ++ else ++ { ++ rd->Range -= bound; ++ rd->Code -= bound; ++ *prob -= (*prob) >> kNumMoveBits; ++ if (rd->Range < kTopValue) ++ { ++ rd->Code = (rd->Code << 8) | ReadByte; ++ rd->Range <<= 8; ++ } ++ return 1; ++ } ++} ++ ++#define RC_GET_BIT2(prob, mi, A0, A1) \ ++ UInt32 bound = (range >> kNumBitModelTotalBits) * *prob; \ ++ if (code < bound) \ ++ { A0; range = bound; *prob += (kBitModelTotal - *prob) >> kNumMoveBits; mi <<= 1; } \ ++ else \ ++ { A1; range -= bound; code -= bound; *prob -= (*prob) >> kNumMoveBits; mi = (mi + mi) + 1; } \ ++ RC_NORMALIZE ++ ++#define RC_GET_BIT(prob, mi) RC_GET_BIT2(prob, mi, ; , ;) ++ ++int RangeDecoderBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd) ++{ ++ int mi = 1; ++ int i; ++ #ifdef _LZMA_LOC_OPT ++ RC_INIT_VAR ++ #endif ++ for(i = numLevels; i > 0; i--) ++ { ++ #ifdef _LZMA_LOC_OPT ++ CProb *prob = probs + mi; ++ RC_GET_BIT(prob, mi) ++ #else ++ mi = (mi + mi) + RangeDecoderBitDecode(probs + mi, rd); ++ #endif ++ } ++ #ifdef _LZMA_LOC_OPT ++ RC_FLUSH_VAR ++ #endif ++ return mi - (1 << numLevels); ++} ++ ++int RangeDecoderReverseBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd) ++{ ++ int mi = 1; ++ int i; ++ int symbol = 0; ++ #ifdef _LZMA_LOC_OPT ++ RC_INIT_VAR ++ #endif ++ for(i = 0; i < numLevels; i++) ++ { ++ #ifdef _LZMA_LOC_OPT ++ CProb *prob = probs + mi; ++ RC_GET_BIT2(prob, mi, ; , symbol |= (1 << i)) ++ #else ++ int bit = RangeDecoderBitDecode(probs + mi, rd); ++ mi = mi + mi + bit; ++ symbol |= (bit << i); ++ #endif ++ } ++ #ifdef _LZMA_LOC_OPT ++ RC_FLUSH_VAR ++ #endif ++ return symbol; ++} ++ ++Byte LzmaLiteralDecode(CProb *probs, CRangeDecoder *rd) ++{ ++ int symbol = 1; ++ #ifdef _LZMA_LOC_OPT ++ RC_INIT_VAR ++ #endif ++ do ++ { ++ #ifdef _LZMA_LOC_OPT ++ CProb *prob = probs + symbol; ++ RC_GET_BIT(prob, symbol) ++ #else ++ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd); ++ #endif ++ } ++ while (symbol < 0x100); ++ #ifdef _LZMA_LOC_OPT ++ RC_FLUSH_VAR ++ #endif ++ return symbol; ++} ++ ++Byte LzmaLiteralDecodeMatch(CProb *probs, CRangeDecoder *rd, Byte matchByte) ++{ ++ int symbol = 1; ++ #ifdef _LZMA_LOC_OPT ++ RC_INIT_VAR ++ #endif ++ do ++ { ++ int bit; ++ int matchBit = (matchByte >> 7) & 1; ++ matchByte <<= 1; ++ #ifdef _LZMA_LOC_OPT ++ { ++ CProb *prob = probs + ((1 + matchBit) << 8) + symbol; ++ RC_GET_BIT2(prob, symbol, bit = 0, bit = 1) ++ } ++ #else ++ bit = RangeDecoderBitDecode(probs + ((1 + matchBit) << 8) + symbol, rd); ++ symbol = (symbol << 1) | bit; ++ #endif ++ if (matchBit != bit) ++ { ++ while (symbol < 0x100) ++ { ++ #ifdef _LZMA_LOC_OPT ++ CProb *prob = probs + symbol; ++ RC_GET_BIT(prob, symbol) ++ #else ++ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd); ++ #endif ++ } ++ break; ++ } ++ } ++ while (symbol < 0x100); ++ #ifdef _LZMA_LOC_OPT ++ RC_FLUSH_VAR ++ #endif ++ return symbol; ++} ++ ++#define kNumPosBitsMax 4 ++#define kNumPosStatesMax (1 << kNumPosBitsMax) ++ ++#define kLenNumLowBits 3 ++#define kLenNumLowSymbols (1 << kLenNumLowBits) ++#define kLenNumMidBits 3 ++#define kLenNumMidSymbols (1 << kLenNumMidBits) ++#define kLenNumHighBits 8 ++#define kLenNumHighSymbols (1 << kLenNumHighBits) ++ ++#define LenChoice 0 ++#define LenChoice2 (LenChoice + 1) ++#define LenLow (LenChoice2 + 1) ++#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits)) ++#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits)) ++#define kNumLenProbs (LenHigh + kLenNumHighSymbols) ++ ++int LzmaLenDecode(CProb *p, CRangeDecoder *rd, int posState) ++{ ++ if(RangeDecoderBitDecode(p + LenChoice, rd) == 0) ++ return RangeDecoderBitTreeDecode(p + LenLow + ++ (posState << kLenNumLowBits), kLenNumLowBits, rd); ++ if(RangeDecoderBitDecode(p + LenChoice2, rd) == 0) ++ return kLenNumLowSymbols + RangeDecoderBitTreeDecode(p + LenMid + ++ (posState << kLenNumMidBits), kLenNumMidBits, rd); ++ return kLenNumLowSymbols + kLenNumMidSymbols + ++ RangeDecoderBitTreeDecode(p + LenHigh, kLenNumHighBits, rd); ++} ++ ++#define kNumStates 12 ++ ++#define kStartPosModelIndex 4 ++#define kEndPosModelIndex 14 ++#define kNumFullDistances (1 << (kEndPosModelIndex >> 1)) ++ ++#define kNumPosSlotBits 6 ++#define kNumLenToPosStates 4 ++ ++#define kNumAlignBits 4 ++#define kAlignTableSize (1 << kNumAlignBits) ++ ++#define kMatchMinLen 2 ++ ++#define IsMatch 0 ++#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax)) ++#define IsRepG0 (IsRep + kNumStates) ++#define IsRepG1 (IsRepG0 + kNumStates) ++#define IsRepG2 (IsRepG1 + kNumStates) ++#define IsRep0Long (IsRepG2 + kNumStates) ++#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax)) ++#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits)) ++#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex) ++#define LenCoder (Align + kAlignTableSize) ++#define RepLenCoder (LenCoder + kNumLenProbs) ++#define Literal (RepLenCoder + kNumLenProbs) ++ ++#if Literal != LZMA_BASE_SIZE ++StopCompilingDueBUG ++#endif ++ ++#ifdef _LZMA_OUT_READ ++ ++typedef struct _LzmaVarState ++{ ++ CRangeDecoder RangeDecoder; ++ Byte *Dictionary; ++ UInt32 DictionarySize; ++ UInt32 DictionaryPos; ++ UInt32 GlobalPos; ++ UInt32 Reps[4]; ++ int lc; ++ int lp; ++ int pb; ++ int State; ++ int PreviousIsMatch; ++ int RemainLen; ++} LzmaVarState; ++ ++int LzmaDecoderInit( ++ unsigned char *buffer, UInt32 bufferSize, ++ int lc, int lp, int pb, ++ unsigned char *dictionary, UInt32 dictionarySize, ++ #ifdef _LZMA_IN_CB ++ ILzmaInCallback *inCallback ++ #else ++ unsigned char *inStream, UInt32 inSize ++ #endif ++ ) ++{ ++ LzmaVarState *vs = (LzmaVarState *)buffer; ++ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState)); ++ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp)); ++ UInt32 i; ++ if (bufferSize < numProbs * sizeof(CProb) + sizeof(LzmaVarState)) ++ return LZMA_RESULT_NOT_ENOUGH_MEM; ++ vs->Dictionary = dictionary; ++ vs->DictionarySize = dictionarySize; ++ vs->DictionaryPos = 0; ++ vs->GlobalPos = 0; ++ vs->Reps[0] = vs->Reps[1] = vs->Reps[2] = vs->Reps[3] = 1; ++ vs->lc = lc; ++ vs->lp = lp; ++ vs->pb = pb; ++ vs->State = 0; ++ vs->PreviousIsMatch = 0; ++ vs->RemainLen = 0; ++ dictionary[dictionarySize - 1] = 0; ++ for (i = 0; i < numProbs; i++) ++ p[i] = kBitModelTotal >> 1; ++ RangeDecoderInit(&vs->RangeDecoder, ++ #ifdef _LZMA_IN_CB ++ inCallback ++ #else ++ inStream, inSize ++ #endif ++ ); ++ return LZMA_RESULT_OK; ++} ++ ++int LzmaDecode(unsigned char *buffer, ++ unsigned char *outStream, UInt32 outSize, ++ UInt32 *outSizeProcessed) ++{ ++ LzmaVarState *vs = (LzmaVarState *)buffer; ++ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState)); ++ CRangeDecoder rd = vs->RangeDecoder; ++ int state = vs->State; ++ int previousIsMatch = vs->PreviousIsMatch; ++ Byte previousByte; ++ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3]; ++ UInt32 nowPos = 0; ++ UInt32 posStateMask = (1 << (vs->pb)) - 1; ++ UInt32 literalPosMask = (1 << (vs->lp)) - 1; ++ int lc = vs->lc; ++ int len = vs->RemainLen; ++ UInt32 globalPos = vs->GlobalPos; ++ ++ Byte *dictionary = vs->Dictionary; ++ UInt32 dictionarySize = vs->DictionarySize; ++ UInt32 dictionaryPos = vs->DictionaryPos; ++ ++ if (len == -1) ++ { ++ *outSizeProcessed = 0; ++ return LZMA_RESULT_OK; ++ } ++ ++ while(len > 0 && nowPos < outSize) ++ { ++ UInt32 pos = dictionaryPos - rep0; ++ if (pos >= dictionarySize) ++ pos += dictionarySize; ++ outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos]; ++ if (++dictionaryPos == dictionarySize) ++ dictionaryPos = 0; ++ len--; ++ } ++ if (dictionaryPos == 0) ++ previousByte = dictionary[dictionarySize - 1]; ++ else ++ previousByte = dictionary[dictionaryPos - 1]; ++#else ++ ++int LzmaDecode( ++ Byte *buffer, UInt32 bufferSize, ++ int lc, int lp, int pb, ++ #ifdef _LZMA_IN_CB ++ ILzmaInCallback *inCallback, ++ #else ++ unsigned char *inStream, UInt32 inSize, ++ #endif ++ unsigned char *outStream, UInt32 outSize, ++ UInt32 *outSizeProcessed) ++{ ++ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp)); ++ CProb *p = (CProb *)buffer; ++ CRangeDecoder rd; ++ UInt32 i; ++ int state = 0; ++ int previousIsMatch = 0; ++ Byte previousByte = 0; ++ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1; ++ UInt32 nowPos = 0; ++ UInt32 posStateMask = (1 << pb) - 1; ++ UInt32 literalPosMask = (1 << lp) - 1; ++ int len = 0; ++ if (bufferSize < numProbs * sizeof(CProb)) ++ return LZMA_RESULT_NOT_ENOUGH_MEM; ++ for (i = 0; i < numProbs; i++) ++ p[i] = kBitModelTotal >> 1; ++ RangeDecoderInit(&rd, ++ #ifdef _LZMA_IN_CB ++ inCallback ++ #else ++ inStream, inSize ++ #endif ++ ); ++#endif ++ ++ *outSizeProcessed = 0; ++ while(nowPos < outSize) ++ { ++ int posState = (int)( ++ (nowPos ++ #ifdef _LZMA_OUT_READ ++ + globalPos ++ #endif ++ ) ++ & posStateMask); ++ #ifdef _LZMA_IN_CB ++ if (rd.Result != LZMA_RESULT_OK) ++ return rd.Result; ++ #endif ++ if (rd.ExtraBytes != 0) ++ return LZMA_RESULT_DATA_ERROR; ++ if (RangeDecoderBitDecode(p + IsMatch + (state << kNumPosBitsMax) + posState, &rd) == 0) ++ { ++ CProb *probs = p + Literal + (LZMA_LIT_SIZE * ++ ((( ++ (nowPos ++ #ifdef _LZMA_OUT_READ ++ + globalPos ++ #endif ++ ) ++ & literalPosMask) << lc) + (previousByte >> (8 - lc)))); ++ ++ if (state < 4) state = 0; ++ else if (state < 10) state -= 3; ++ else state -= 6; ++ if (previousIsMatch) ++ { ++ Byte matchByte; ++ #ifdef _LZMA_OUT_READ ++ UInt32 pos = dictionaryPos - rep0; ++ if (pos >= dictionarySize) ++ pos += dictionarySize; ++ matchByte = dictionary[pos]; ++ #else ++ matchByte = outStream[nowPos - rep0]; ++ #endif ++ previousByte = LzmaLiteralDecodeMatch(probs, &rd, matchByte); ++ previousIsMatch = 0; ++ } ++ else ++ previousByte = LzmaLiteralDecode(probs, &rd); ++ outStream[nowPos++] = previousByte; ++ #ifdef _LZMA_OUT_READ ++ dictionary[dictionaryPos] = previousByte; ++ if (++dictionaryPos == dictionarySize) ++ dictionaryPos = 0; ++ #endif ++ } ++ else ++ { ++ previousIsMatch = 1; ++ if (RangeDecoderBitDecode(p + IsRep + state, &rd) == 1) ++ { ++ if (RangeDecoderBitDecode(p + IsRepG0 + state, &rd) == 0) ++ { ++ if (RangeDecoderBitDecode(p + IsRep0Long + (state << kNumPosBitsMax) + posState, &rd) == 0) ++ { ++ #ifdef _LZMA_OUT_READ ++ UInt32 pos; ++ #endif ++ if ( ++ (nowPos ++ #ifdef _LZMA_OUT_READ ++ + globalPos ++ #endif ++ ) ++ == 0) ++ return LZMA_RESULT_DATA_ERROR; ++ state = state < 7 ? 9 : 11; ++ #ifdef _LZMA_OUT_READ ++ pos = dictionaryPos - rep0; ++ if (pos >= dictionarySize) ++ pos += dictionarySize; ++ previousByte = dictionary[pos]; ++ dictionary[dictionaryPos] = previousByte; ++ if (++dictionaryPos == dictionarySize) ++ dictionaryPos = 0; ++ #else ++ previousByte = outStream[nowPos - rep0]; ++ #endif ++ outStream[nowPos++] = previousByte; ++ continue; ++ } ++ } ++ else ++ { ++ UInt32 distance; ++ if(RangeDecoderBitDecode(p + IsRepG1 + state, &rd) == 0) ++ distance = rep1; ++ else ++ { ++ if(RangeDecoderBitDecode(p + IsRepG2 + state, &rd) == 0) ++ distance = rep2; ++ else ++ { ++ distance = rep3; ++ rep3 = rep2; ++ } ++ rep2 = rep1; ++ } ++ rep1 = rep0; ++ rep0 = distance; ++ } ++ len = LzmaLenDecode(p + RepLenCoder, &rd, posState); ++ state = state < 7 ? 8 : 11; ++ } ++ else ++ { ++ int posSlot; ++ rep3 = rep2; ++ rep2 = rep1; ++ rep1 = rep0; ++ state = state < 7 ? 7 : 10; ++ len = LzmaLenDecode(p + LenCoder, &rd, posState); ++ posSlot = RangeDecoderBitTreeDecode(p + PosSlot + ++ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << ++ kNumPosSlotBits), kNumPosSlotBits, &rd); ++ if (posSlot >= kStartPosModelIndex) ++ { ++ int numDirectBits = ((posSlot >> 1) - 1); ++ rep0 = ((2 | ((UInt32)posSlot & 1)) << numDirectBits); ++ if (posSlot < kEndPosModelIndex) ++ { ++ rep0 += RangeDecoderReverseBitTreeDecode( ++ p + SpecPos + rep0 - posSlot - 1, numDirectBits, &rd); ++ } ++ else ++ { ++ rep0 += RangeDecoderDecodeDirectBits(&rd, ++ numDirectBits - kNumAlignBits) << kNumAlignBits; ++ rep0 += RangeDecoderReverseBitTreeDecode(p + Align, kNumAlignBits, &rd); ++ } ++ } ++ else ++ rep0 = posSlot; ++ rep0++; ++ } ++ if (rep0 == (UInt32)(0)) ++ { ++ /* it's for stream version */ ++ len = -1; ++ break; ++ } ++ if (rep0 > nowPos ++ #ifdef _LZMA_OUT_READ ++ + globalPos ++ #endif ++ ) ++ { ++ return LZMA_RESULT_DATA_ERROR; ++ } ++ len += kMatchMinLen; ++ do ++ { ++ #ifdef _LZMA_OUT_READ ++ UInt32 pos = dictionaryPos - rep0; ++ if (pos >= dictionarySize) ++ pos += dictionarySize; ++ previousByte = dictionary[pos]; ++ dictionary[dictionaryPos] = previousByte; ++ if (++dictionaryPos == dictionarySize) ++ dictionaryPos = 0; ++ #else ++ previousByte = outStream[nowPos - rep0]; ++ #endif ++ outStream[nowPos++] = previousByte; ++ len--; ++ } ++ while(len > 0 && nowPos < outSize); ++ } ++ } ++ ++ #ifdef _LZMA_OUT_READ ++ vs->RangeDecoder = rd; ++ vs->DictionaryPos = dictionaryPos; ++ vs->GlobalPos = globalPos + nowPos; ++ vs->Reps[0] = rep0; ++ vs->Reps[1] = rep1; ++ vs->Reps[2] = rep2; ++ vs->Reps[3] = rep3; ++ vs->State = state; ++ vs->PreviousIsMatch = previousIsMatch; ++ vs->RemainLen = len; ++ #endif ++ ++ *outSizeProcessed = nowPos; ++ return LZMA_RESULT_OK; ++} +diff -urN linux-2.6.21.1.old/lib/Makefile linux-2.6.21.1.dev/lib/Makefile +--- linux-2.6.21.1.old/lib/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/lib/Makefile 2007-05-26 19:03:45.721680152 +0200 +@@ -13,7 +13,7 @@ + lib-y += kobject.o kref.o kobject_uevent.o klist.o + + obj-y += div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \ +- bust_spinlocks.o hexdump.o ++ bust_spinlocks.o hexdump.o LzmaDecode.o + + ifeq ($(CONFIG_DEBUG_KOBJECT),y) + CFLAGS_kobject.o += -DDEBUG +@@ -58,6 +58,7 @@ + obj-$(CONFIG_AUDIT_GENERIC) += audit.o + + obj-$(CONFIG_SWIOTLB) += swiotlb.o ++ + obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o + + lib-$(CONFIG_GENERIC_BUG) += bug.o diff --git a/target/linux/generic-2.6/patches-2.6.22/003-squashfs_lzma.patch b/target/linux/generic-2.6/patches-2.6.22/003-squashfs_lzma.patch new file mode 100644 index 0000000000..1561461d9e --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/003-squashfs_lzma.patch @@ -0,0 +1,108 @@ +diff -urN linux-2.6.21.1.old/fs/squashfs/inode.c linux-2.6.21.1.dev/fs/squashfs/inode.c +--- linux-2.6.21.1.old/fs/squashfs/inode.c 2007-05-26 19:03:45.499713896 +0200 ++++ linux-2.6.21.1.dev/fs/squashfs/inode.c 2007-05-26 19:07:27.951896024 +0200 +@@ -4,6 +4,9 @@ + * Copyright (c) 2002, 2003, 2004, 2005, 2006 + * Phillip Lougher <phillip@lougher.org.uk> + * ++ * LZMA decompressor support added by Oleg I. Vdovikin ++ * Copyright (c) 2005 Oleg I.Vdovikin <oleg@cs.msu.su> ++ * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2, +@@ -21,6 +24,7 @@ + * inode.c + */ + ++#define SQUASHFS_LZMA + #include <linux/types.h> + #include <linux/squashfs_fs.h> + #include <linux/module.h> +@@ -44,6 +48,19 @@ + + #include "squashfs.h" + ++#ifdef SQUASHFS_LZMA ++#include <linux/LzmaDecode.h> ++ ++/* default LZMA settings, should be in sync with mksquashfs */ ++#define LZMA_LC 3 ++#define LZMA_LP 0 ++#define LZMA_PB 2 ++ ++#define LZMA_WORKSPACE_SIZE ((LZMA_BASE_SIZE + \ ++ (LZMA_LIT_SIZE << (LZMA_LC + LZMA_LP))) * sizeof(CProb)) ++ ++#endif ++ + static void squashfs_put_super(struct super_block *); + static int squashfs_statfs(struct dentry *, struct kstatfs *); + static int squashfs_symlink_readpage(struct file *file, struct page *page); +@@ -64,7 +81,11 @@ + const char *, void *, struct vfsmount *); + + ++#ifdef SQUASHFS_LZMA ++static unsigned char lzma_workspace[LZMA_WORKSPACE_SIZE]; ++#else + static z_stream stream; ++#endif + + static struct file_system_type squashfs_fs_type = { + .owner = THIS_MODULE, +@@ -249,6 +270,15 @@ + if (compressed) { + int zlib_err; + ++#ifdef SQUASHFS_LZMA ++ if ((zlib_err = LzmaDecode(lzma_workspace, ++ LZMA_WORKSPACE_SIZE, LZMA_LC, LZMA_LP, LZMA_PB, ++ c_buffer, c_byte, buffer, msblk->read_size, &bytes)) != LZMA_RESULT_OK) ++ { ++ ERROR("lzma returned unexpected result 0x%x\n", zlib_err); ++ bytes = 0; ++ } ++#else + stream.next_in = c_buffer; + stream.avail_in = c_byte; + stream.next_out = buffer; +@@ -263,7 +293,7 @@ + bytes = 0; + } else + bytes = stream.total_out; +- ++#endif + up(&msblk->read_data_mutex); + } + +@@ -2045,15 +2075,19 @@ + printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) " + "Phillip Lougher\n"); + ++#ifndef SQUASHFS_LZMA + if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) { + ERROR("Failed to allocate zlib workspace\n"); + destroy_inodecache(); + err = -ENOMEM; + goto out; + } ++#endif + + if ((err = register_filesystem(&squashfs_fs_type))) { ++#ifndef SQUASHFS_LZMA + vfree(stream.workspace); ++#endif + destroy_inodecache(); + } + +@@ -2064,7 +2098,9 @@ + + static void __exit exit_squashfs_fs(void) + { ++#ifndef SQUASHFS_LZMA + vfree(stream.workspace); ++#endif + unregister_filesystem(&squashfs_fs_type); + destroy_inodecache(); + } diff --git a/target/linux/generic-2.6/patches-2.6.22/004-extra_optimization.patch b/target/linux/generic-2.6/patches-2.6.22/004-extra_optimization.patch new file mode 100644 index 0000000000..57bea7ea50 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/004-extra_optimization.patch @@ -0,0 +1,13 @@ +diff -urN linux-2.6.21.1.old/Makefile linux-2.6.21.1.dev/Makefile +--- linux-2.6.21.1.old/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/Makefile 2007-05-26 19:14:22.967804016 +0200 +@@ -507,6 +507,9 @@ + NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) + CHECKFLAGS += $(NOSTDINC_FLAGS) + ++# improve gcc optimization ++CFLAGS += $(call cc-option,-funit-at-a-time,) ++ + # warn about C99 declaration after statement + CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) + diff --git a/target/linux/generic-2.6/patches-2.6.22/006-gcc4_inline_fix.patch b/target/linux/generic-2.6/patches-2.6.22/006-gcc4_inline_fix.patch new file mode 100644 index 0000000000..49c85a71ee --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/006-gcc4_inline_fix.patch @@ -0,0 +1,12 @@ +diff -urN linux-2.6.21.1.old/include/asm-mips/system.h linux-2.6.21.1.dev/include/asm-mips/system.h +--- linux-2.6.21.1.old/include/asm-mips/system.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/asm-mips/system.h 2007-05-26 19:26:30.870146040 +0200 +@@ -188,7 +188,7 @@ + if something tries to do an invalid xchg(). */ + extern void __xchg_called_with_bad_pointer(void); + +-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) ++static __always_inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size) + { + switch (size) { + case 4: diff --git a/target/linux/generic-2.6/patches-2.6.22/007-samsung_flash.patch b/target/linux/generic-2.6/patches-2.6.22/007-samsung_flash.patch new file mode 100644 index 0000000000..8c94003081 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/007-samsung_flash.patch @@ -0,0 +1,37 @@ +diff -urN linux-2.6.21.1.old/drivers/mtd/chips/cfi_cmdset_0002.c linux-2.6.21.1.dev/drivers/mtd/chips/cfi_cmdset_0002.c +--- linux-2.6.21.1.old/drivers/mtd/chips/cfi_cmdset_0002.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/mtd/chips/cfi_cmdset_0002.c 2007-05-26 19:30:01.049193968 +0200 +@@ -51,6 +51,7 @@ + #define SST49LF040B 0x0050 + #define SST49LF008A 0x005a + #define AT49BV6416 0x00d6 ++#define MANUFACTURER_SAMSUNG 0x00ec + + static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *); + static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *); +@@ -294,12 +295,19 @@ + + if (extp->MajorVersion != '1' || + (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { +- printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query " +- "version %c.%c.\n", extp->MajorVersion, +- extp->MinorVersion); +- kfree(extp); +- kfree(mtd); +- return NULL; ++ if (cfi->mfr == MANUFACTURER_SAMSUNG && ++ (extp->MajorVersion == '3' && extp->MinorVersion == '3')) { ++ printk(KERN_NOTICE " Newer Samsung flash detected, " ++ "should be compatibile with Amd/Fujitsu.\n"); ++ } ++ else { ++ printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query " ++ "version %c.%c.\n", extp->MajorVersion, ++ extp->MinorVersion); ++ kfree(extp); ++ kfree(mtd); ++ return NULL; ++ } + } + + /* Install our own private info structure */ diff --git a/target/linux/generic-2.6/patches-2.6.22/009-revert_intel_flash_breakage.patch b/target/linux/generic-2.6/patches-2.6.22/009-revert_intel_flash_breakage.patch new file mode 100644 index 0000000000..b188efe7b4 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/009-revert_intel_flash_breakage.patch @@ -0,0 +1,170 @@ +diff -urN linux-2.6.21.1.old/drivers/mtd/chips/cfi_cmdset_0001.c linux-2.6.21.1.dev/drivers/mtd/chips/cfi_cmdset_0001.c +--- linux-2.6.21.1.old/drivers/mtd/chips/cfi_cmdset_0001.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/mtd/chips/cfi_cmdset_0001.c 2007-05-26 19:40:46.809023552 +0200 +@@ -933,7 +933,7 @@ + + static int __xipram xip_wait_for_operation( + struct map_info *map, struct flchip *chip, +- unsigned long adr, unsigned int chip_op_time ) ++ unsigned long adr, int *chip_op_time ) + { + struct cfi_private *cfi = map->fldrv_priv; + struct cfi_pri_intelext *cfip = cfi->cmdset_priv; +@@ -942,7 +942,7 @@ + flstate_t oldstate, newstate; + + start = xip_currtime(); +- usec = chip_op_time * 8; ++ usec = *chip_op_time * 8; + if (usec == 0) + usec = 500000; + done = 0; +@@ -1052,8 +1052,8 @@ + #define XIP_INVAL_CACHED_RANGE(map, from, size) \ + INVALIDATE_CACHED_RANGE(map, from, size) + +-#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, usec) \ +- xip_wait_for_operation(map, chip, cmd_adr, usec) ++#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \ ++ xip_wait_for_operation(map, chip, cmd_adr, p_usec) + + #else + +@@ -1065,65 +1065,65 @@ + static int inval_cache_and_wait_for_operation( + struct map_info *map, struct flchip *chip, + unsigned long cmd_adr, unsigned long inval_adr, int inval_len, +- unsigned int chip_op_time) ++ int *chip_op_time ) + { + struct cfi_private *cfi = map->fldrv_priv; + map_word status, status_OK = CMD(0x80); +- int chip_state = chip->state; +- unsigned int timeo, sleep_time; ++ int z, chip_state = chip->state; ++ unsigned long timeo; + + spin_unlock(chip->mutex); + if (inval_len) + INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len); ++ if (*chip_op_time) ++ cfi_udelay(*chip_op_time); + spin_lock(chip->mutex); + +- /* set our timeout to 8 times the expected delay */ +- timeo = chip_op_time * 8; +- if (!timeo) +- timeo = 500000; +- sleep_time = chip_op_time / 2; ++ timeo = *chip_op_time * 8 * HZ / 1000000; ++ if (timeo < HZ/2) ++ timeo = HZ/2; ++ timeo += jiffies; + ++ z = 0; + for (;;) { ++ if (chip->state != chip_state) { ++ /* Someone's suspended the operation: sleep */ ++ DECLARE_WAITQUEUE(wait, current); ++ ++ set_current_state(TASK_UNINTERRUPTIBLE); ++ add_wait_queue(&chip->wq, &wait); ++ spin_unlock(chip->mutex); ++ schedule(); ++ remove_wait_queue(&chip->wq, &wait); ++ timeo = jiffies + (HZ / 2); /* FIXME */ ++ spin_lock(chip->mutex); ++ continue; ++ } ++ + status = map_read(map, cmd_adr); + if (map_word_andequal(map, status, status_OK, status_OK)) + break; + +- if (!timeo) { ++ /* OK Still waiting */ ++ if (time_after(jiffies, timeo)) { + map_write(map, CMD(0x70), cmd_adr); + chip->state = FL_STATUS; + return -ETIME; + } + +- /* OK Still waiting. Drop the lock, wait a while and retry. */ ++ /* Latency issues. Drop the lock, wait a while and retry */ ++ z++; + spin_unlock(chip->mutex); +- if (sleep_time >= 1000000/HZ) { +- /* +- * Half of the normal delay still remaining +- * can be performed with a sleeping delay instead +- * of busy waiting. +- */ +- msleep(sleep_time/1000); +- timeo -= sleep_time; +- sleep_time = 1000000/HZ; +- } else { +- udelay(1); +- cond_resched(); +- timeo--; +- } ++ cfi_udelay(1); + spin_lock(chip->mutex); +- +- while (chip->state != chip_state) { +- /* Someone's suspended the operation: sleep */ +- DECLARE_WAITQUEUE(wait, current); +- set_current_state(TASK_UNINTERRUPTIBLE); +- add_wait_queue(&chip->wq, &wait); +- spin_unlock(chip->mutex); +- schedule(); +- remove_wait_queue(&chip->wq, &wait); +- spin_lock(chip->mutex); +- } + } + ++ if (!z) { ++ if (!--(*chip_op_time)) ++ *chip_op_time = 1; ++ } else if (z > 1) ++ ++(*chip_op_time); ++ + /* Done and happy. */ + chip->state = FL_STATUS; + return 0; +@@ -1132,7 +1132,8 @@ + #endif + + #define WAIT_TIMEOUT(map, chip, adr, udelay) \ +- INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, udelay); ++ ({ int __udelay = (udelay); \ ++ INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); }) + + + static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len) +@@ -1356,7 +1357,7 @@ + + ret = INVAL_CACHE_AND_WAIT(map, chip, adr, + adr, map_bankwidth(map), +- chip->word_write_time); ++ &chip->word_write_time); + if (ret) { + xip_enable(map, chip, adr); + printk(KERN_ERR "%s: word write error (status timeout)\n", map->name); +@@ -1593,7 +1594,7 @@ + + ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, + adr, len, +- chip->buffer_write_time); ++ &chip->buffer_write_time); + if (ret) { + map_write(map, CMD(0x70), cmd_adr); + chip->state = FL_STATUS; +@@ -1728,7 +1729,7 @@ + + ret = INVAL_CACHE_AND_WAIT(map, chip, adr, + adr, len, +- chip->erase_time); ++ &chip->erase_time); + if (ret) { + map_write(map, CMD(0x70), adr); + chip->state = FL_STATUS; diff --git a/target/linux/generic-2.6/patches-2.6.22/010-disable_old_squashfs_compatibility.patch b/target/linux/generic-2.6/patches-2.6.22/010-disable_old_squashfs_compatibility.patch new file mode 100644 index 0000000000..de205a98ab --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/010-disable_old_squashfs_compatibility.patch @@ -0,0 +1,21 @@ +diff -urN linux-2.6.21.1.old/fs/squashfs/Makefile linux-2.6.21.1.dev/fs/squashfs/Makefile +--- linux-2.6.21.1.old/fs/squashfs/Makefile 2007-05-26 19:03:45.499713896 +0200 ++++ linux-2.6.21.1.dev/fs/squashfs/Makefile 2007-05-26 19:43:37.064140840 +0200 +@@ -4,4 +4,3 @@ + + obj-$(CONFIG_SQUASHFS) += squashfs.o + squashfs-y += inode.o +-squashfs-y += squashfs2_0.o +diff -urN linux-2.6.21.1.old/fs/squashfs/squashfs.h linux-2.6.21.1.dev/fs/squashfs/squashfs.h +--- linux-2.6.21.1.old/fs/squashfs/squashfs.h 2007-05-26 19:03:45.500713744 +0200 ++++ linux-2.6.21.1.dev/fs/squashfs/squashfs.h 2007-05-26 19:43:37.075139168 +0200 +@@ -24,6 +24,9 @@ + #ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY + #undef CONFIG_SQUASHFS_1_0_COMPATIBILITY + #endif ++#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY ++#undef CONFIG_SQUASHFS_2_0_COMPATIBILITY ++#endif + + #ifdef SQUASHFS_TRACE + #define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args) diff --git a/target/linux/generic-2.6/patches-2.6.22/011-mips_boot.patch b/target/linux/generic-2.6/patches-2.6.22/011-mips_boot.patch new file mode 100644 index 0000000000..6b3ebf74d9 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/011-mips_boot.patch @@ -0,0 +1,20 @@ +diff -urN linux-2.6.21.1.old/arch/mips/kernel/head.S linux-2.6.21.1.dev/arch/mips/kernel/head.S +--- linux-2.6.21.1.old/arch/mips/kernel/head.S 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/arch/mips/kernel/head.S 2007-05-26 19:46:49.061952736 +0200 +@@ -129,11 +129,15 @@ + #endif + .endm + ++ ++ j kernel_entry ++ nop ++ + /* + * Reserved space for exception handlers. + * Necessary for machines which link their kernels at KSEG0. + */ +- .fill 0x400 ++ .align 10 + + EXPORT(stext) # used for profiling + EXPORT(_stext) diff --git a/target/linux/generic-2.6/patches-2.6.22/012-mips_cpu_tlb.patch b/target/linux/generic-2.6/patches-2.6.22/012-mips_cpu_tlb.patch new file mode 100644 index 0000000000..85b31e3348 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/012-mips_cpu_tlb.patch @@ -0,0 +1,19 @@ +diff -urN linux-2.6.21.1.old/arch/mips/mm/tlbex.c linux-2.6.21.1.dev/arch/mips/mm/tlbex.c +--- linux-2.6.21.1.old/arch/mips/mm/tlbex.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/arch/mips/mm/tlbex.c 2007-05-26 19:50:19.046030304 +0200 +@@ -887,7 +887,6 @@ + case CPU_R10000: + case CPU_R12000: + case CPU_R14000: +- case CPU_4KC: + case CPU_SB1: + case CPU_SB1A: + case CPU_4KSC: +@@ -915,6 +914,7 @@ + tlbw(p); + break; + ++ case CPU_4KC: + case CPU_4KEC: + case CPU_24K: + case CPU_34K: diff --git a/target/linux/generic-2.6/patches-2.6.22/013-mips_generic_gpio_support.patch b/target/linux/generic-2.6/patches-2.6.22/013-mips_generic_gpio_support.patch new file mode 100644 index 0000000000..69124bc242 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/013-mips_generic_gpio_support.patch @@ -0,0 +1,35 @@ +diff -urN linux-2.6.21.1.old/arch/mips/defconfig linux-2.6.21.1.dev/arch/mips/defconfig +--- linux-2.6.21.1.old/arch/mips/defconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/arch/mips/defconfig 2007-05-26 19:55:17.542651920 +0200 +@@ -69,6 +69,7 @@ + CONFIG_GENERIC_HWEIGHT=y + CONFIG_GENERIC_CALIBRATE_DELAY=y + CONFIG_GENERIC_TIME=y ++CONFIG_GENERIC_GPIO=n + CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y + # CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ is not set + CONFIG_ARC=y +diff -urN linux-2.6.21.1.old/arch/mips/Kconfig linux-2.6.21.1.dev/arch/mips/Kconfig +--- linux-2.6.21.1.old/arch/mips/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/arch/mips/Kconfig 2007-05-26 19:55:17.500658304 +0200 +@@ -704,6 +704,10 @@ + bool + default y + ++config GENERIC_GPIO ++ bool ++ default n ++ + config SCHED_NO_NO_OMIT_FRAME_POINTER + bool + default y +diff -urN linux-2.6.21.1.old/include/asm-mips/gpio.h linux-2.6.21.1.dev/include/asm-mips/gpio.h +--- linux-2.6.21.1.old/include/asm-mips/gpio.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/asm-mips/gpio.h 2007-05-26 19:55:17.500658304 +0200 +@@ -0,0 +1,6 @@ ++#ifndef _ASM_MIPS_GPIO_H ++#define _ASM_MIPS_GPIO_H ++ ++#include <gpio.h> ++ ++#endif /* _ASM_MIPS_GPIO_H */ diff --git a/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch b/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch new file mode 100644 index 0000000000..4610d3c01a --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/060-rootfs_split.patch @@ -0,0 +1,410 @@ +diff -urN linux-2.6.21.1.old/drivers/mtd/Kconfig linux-2.6.21.1.dev/drivers/mtd/Kconfig +--- linux-2.6.21.1.old/drivers/mtd/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/mtd/Kconfig 2007-05-26 19:58:42.320520952 +0200 +@@ -47,6 +47,11 @@ + devices. Partitioning on NFTL 'devices' is a different - that's the + 'normal' form of partitioning used on a block device. + ++config MTD_SPLIT_ROOTFS ++ bool "Automatically split rootfs partition for squashfs" ++ depends on MTD_PARTITIONS ++ default y ++ + config MTD_REDBOOT_PARTS + tristate "RedBoot partition table parsing" + depends on MTD_PARTITIONS +diff -urN linux-2.6.21.1.old/drivers/mtd/mtdpart.c linux-2.6.21.1.dev/drivers/mtd/mtdpart.c +--- linux-2.6.21.1.old/drivers/mtd/mtdpart.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/mtd/mtdpart.c 2007-05-26 19:58:42.331519280 +0200 +@@ -20,6 +20,8 @@ + #include <linux/mtd/mtd.h> + #include <linux/mtd/partitions.h> + #include <linux/mtd/compatmac.h> ++#include <linux/squashfs_fs.h> ++#include <linux/root_dev.h> + + /* Our partition linked list */ + static LIST_HEAD(mtd_partitions); +@@ -308,6 +310,171 @@ + return 0; + } + ++static u_int32_t cur_offset = 0; ++static int add_mtd_partition(struct mtd_info *master, const struct mtd_partition *part, int i) ++{ ++ struct mtd_part *slave; ++ ++ /* allocate the partition structure */ ++ slave = kzalloc (sizeof(*slave), GFP_KERNEL); ++ if (!slave) { ++ printk ("memory allocation error while creating partitions for \"%s\"\n", ++ master->name); ++ del_mtd_partitions(master); ++ return -ENOMEM; ++ } ++ list_add(&slave->list, &mtd_partitions); ++ ++ /* set up the MTD object for this partition */ ++ slave->mtd.type = master->type; ++ slave->mtd.flags = master->flags & ~part->mask_flags; ++ slave->mtd.size = part->size; ++ slave->mtd.writesize = master->writesize; ++ slave->mtd.oobsize = master->oobsize; ++ slave->mtd.oobavail = master->oobavail; ++ slave->mtd.subpage_sft = master->subpage_sft; ++ ++ slave->mtd.name = part->name; ++ slave->mtd.owner = master->owner; ++ ++ slave->mtd.read = part_read; ++ slave->mtd.write = part_write; ++ ++ if(master->point && master->unpoint){ ++ slave->mtd.point = part_point; ++ slave->mtd.unpoint = part_unpoint; ++ } ++ ++ if (master->read_oob) ++ slave->mtd.read_oob = part_read_oob; ++ if (master->write_oob) ++ slave->mtd.write_oob = part_write_oob; ++ if(master->read_user_prot_reg) ++ slave->mtd.read_user_prot_reg = part_read_user_prot_reg; ++ if(master->read_fact_prot_reg) ++ slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; ++ if(master->write_user_prot_reg) ++ slave->mtd.write_user_prot_reg = part_write_user_prot_reg; ++ if(master->lock_user_prot_reg) ++ slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg; ++ if(master->get_user_prot_info) ++ slave->mtd.get_user_prot_info = part_get_user_prot_info; ++ if(master->get_fact_prot_info) ++ slave->mtd.get_fact_prot_info = part_get_fact_prot_info; ++ if (master->sync) ++ slave->mtd.sync = part_sync; ++ if (!i && master->suspend && master->resume) { ++ slave->mtd.suspend = part_suspend; ++ slave->mtd.resume = part_resume; ++ } ++ if (master->writev) ++ slave->mtd.writev = part_writev; ++ if (master->lock) ++ slave->mtd.lock = part_lock; ++ if (master->unlock) ++ slave->mtd.unlock = part_unlock; ++ if (master->block_isbad) ++ slave->mtd.block_isbad = part_block_isbad; ++ if (master->block_markbad) ++ slave->mtd.block_markbad = part_block_markbad; ++ slave->mtd.erase = part_erase; ++ slave->master = master; ++ slave->offset = part->offset; ++ slave->index = i; ++ ++ if (slave->offset == MTDPART_OFS_APPEND) ++ slave->offset = cur_offset; ++ if (slave->offset == MTDPART_OFS_NXTBLK) { ++ slave->offset = cur_offset; ++ if ((cur_offset % master->erasesize) != 0) { ++ /* Round up to next erasesize */ ++ slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize; ++ printk(KERN_NOTICE "Moving partition %d: " ++ "0x%08x -> 0x%08x\n", i, ++ cur_offset, slave->offset); ++ } ++ } ++ if (slave->mtd.size == MTDPART_SIZ_FULL) ++ slave->mtd.size = master->size - slave->offset; ++ cur_offset = slave->offset + slave->mtd.size; ++ ++ printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset, ++ slave->offset + slave->mtd.size, slave->mtd.name); ++ ++ /* let's do some sanity checks */ ++ if (slave->offset >= master->size) { ++ /* let's register it anyway to preserve ordering */ ++ slave->offset = 0; ++ slave->mtd.size = 0; ++ printk ("mtd: partition \"%s\" is out of reach -- disabled\n", ++ part->name); ++ } ++ if (slave->offset + slave->mtd.size > master->size) { ++ slave->mtd.size = master->size - slave->offset; ++ printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n", ++ part->name, master->name, slave->mtd.size); ++ } ++ if (master->numeraseregions>1) { ++ /* Deal with variable erase size stuff */ ++ int i; ++ struct mtd_erase_region_info *regions = master->eraseregions; ++ ++ /* Find the first erase regions which is part of this partition. */ ++ for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++) ++ ; ++ ++ for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) { ++ if (slave->mtd.erasesize < regions[i].erasesize) { ++ slave->mtd.erasesize = regions[i].erasesize; ++ } ++ } ++ } else { ++ /* Single erase size */ ++ slave->mtd.erasesize = master->erasesize; ++ } ++ ++ if ((slave->mtd.flags & MTD_WRITEABLE) && ++ (slave->offset % slave->mtd.erasesize)) { ++ /* Doesn't start on a boundary of major erase size */ ++ /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */ ++ slave->mtd.flags &= ~MTD_WRITEABLE; ++ printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n", ++ part->name); ++ } ++ if ((slave->mtd.flags & MTD_WRITEABLE) && ++ (slave->mtd.size % slave->mtd.erasesize)) { ++ slave->mtd.flags &= ~MTD_WRITEABLE; ++ printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n", ++ part->name); ++ } ++ ++ slave->mtd.ecclayout = master->ecclayout; ++ if (master->block_isbad) { ++ uint32_t offs = 0; ++ ++ while(offs < slave->mtd.size) { ++ if (master->block_isbad(master, ++ offs + slave->offset)) ++ slave->mtd.ecc_stats.badblocks++; ++ offs += slave->mtd.erasesize; ++ } ++ } ++ ++ if(part->mtdp) ++ { /* store the object pointer (caller may or may not register it */ ++ *part->mtdp = &slave->mtd; ++ slave->registered = 0; ++ } ++ else ++ { ++ /* register our partition */ ++ add_mtd_device(&slave->mtd); ++ slave->registered = 1; ++ } ++ ++ return 0; ++} ++ + /* + * This function, given a master MTD object and a partition table, creates + * and registers slave MTD objects which are bound to the master according to +@@ -319,169 +487,53 @@ + const struct mtd_partition *parts, + int nbparts) + { +- struct mtd_part *slave; +- u_int32_t cur_offset = 0; +- int i; ++ struct mtd_partition *part; ++ int i, ret = 0; + + printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name); + + for (i = 0; i < nbparts; i++) { ++ part = (struct mtd_partition *) &parts[i]; ++ ret = add_mtd_partition(master, part, i); ++ if (ret) ++ return ret; ++ if (strcmp(part->name, "rootfs") == 0) { ++#ifdef CONFIG_MTD_SPLIT_ROOTFS ++ int len; ++ char buf[512]; ++ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf; ++#define ROOTFS_SPLIT_NAME "rootfs_data" ++ if ((master->read(master, part->offset, sizeof(struct squashfs_super_block), &len, buf) == 0) && ++ (len == sizeof(struct squashfs_super_block)) && ++ (*((u32 *) buf) == SQUASHFS_MAGIC) && ++ (sb->bytes_used > 0)) { ++ ++ ++ part = kmalloc(sizeof(struct mtd_partition), GFP_KERNEL); ++ memcpy(part, &parts[i], sizeof(struct mtd_partition)); ++ ++ part->name = kmalloc(sizeof(ROOTFS_SPLIT_NAME) + 1, GFP_KERNEL); ++ strcpy(part->name, ROOTFS_SPLIT_NAME); ++ ++ len = (u32) sb->bytes_used; ++ len += (part->offset & 0x000fffff); ++ len += (master->erasesize - 1); ++ len &= ~(master->erasesize - 1); ++ len -= (part->offset & 0x000fffff); ++ part->offset += len; ++ part->size -= len; ++ ++ if (master->erasesize <= part->size) ++ ret = add_mtd_partition(master, part, i + 1); ++ else ++ kfree(part->name); ++ if (ret) ++ return ret; + +- /* allocate the partition structure */ +- slave = kzalloc (sizeof(*slave), GFP_KERNEL); +- if (!slave) { +- printk ("memory allocation error while creating partitions for \"%s\"\n", +- master->name); +- del_mtd_partitions(master); +- return -ENOMEM; +- } +- list_add(&slave->list, &mtd_partitions); +- +- /* set up the MTD object for this partition */ +- slave->mtd.type = master->type; +- slave->mtd.flags = master->flags & ~parts[i].mask_flags; +- slave->mtd.size = parts[i].size; +- slave->mtd.writesize = master->writesize; +- slave->mtd.oobsize = master->oobsize; +- slave->mtd.oobavail = master->oobavail; +- slave->mtd.subpage_sft = master->subpage_sft; +- +- slave->mtd.name = parts[i].name; +- slave->mtd.owner = master->owner; +- +- slave->mtd.read = part_read; +- slave->mtd.write = part_write; +- +- if(master->point && master->unpoint){ +- slave->mtd.point = part_point; +- slave->mtd.unpoint = part_unpoint; +- } +- +- if (master->read_oob) +- slave->mtd.read_oob = part_read_oob; +- if (master->write_oob) +- slave->mtd.write_oob = part_write_oob; +- if(master->read_user_prot_reg) +- slave->mtd.read_user_prot_reg = part_read_user_prot_reg; +- if(master->read_fact_prot_reg) +- slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg; +- if(master->write_user_prot_reg) +- slave->mtd.write_user_prot_reg = part_write_user_prot_reg; +- if(master->lock_user_prot_reg) +- slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg; +- if(master->get_user_prot_info) +- slave->mtd.get_user_prot_info = part_get_user_prot_info; +- if(master->get_fact_prot_info) +- slave->mtd.get_fact_prot_info = part_get_fact_prot_info; +- if (master->sync) +- slave->mtd.sync = part_sync; +- if (!i && master->suspend && master->resume) { +- slave->mtd.suspend = part_suspend; +- slave->mtd.resume = part_resume; +- } +- if (master->writev) +- slave->mtd.writev = part_writev; +- if (master->lock) +- slave->mtd.lock = part_lock; +- if (master->unlock) +- slave->mtd.unlock = part_unlock; +- if (master->block_isbad) +- slave->mtd.block_isbad = part_block_isbad; +- if (master->block_markbad) +- slave->mtd.block_markbad = part_block_markbad; +- slave->mtd.erase = part_erase; +- slave->master = master; +- slave->offset = parts[i].offset; +- slave->index = i; +- +- if (slave->offset == MTDPART_OFS_APPEND) +- slave->offset = cur_offset; +- if (slave->offset == MTDPART_OFS_NXTBLK) { +- slave->offset = cur_offset; +- if ((cur_offset % master->erasesize) != 0) { +- /* Round up to next erasesize */ +- slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize; +- printk(KERN_NOTICE "Moving partition %d: " +- "0x%08x -> 0x%08x\n", i, +- cur_offset, slave->offset); ++ kfree(part); + } +- } +- if (slave->mtd.size == MTDPART_SIZ_FULL) +- slave->mtd.size = master->size - slave->offset; +- cur_offset = slave->offset + slave->mtd.size; +- +- printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset, +- slave->offset + slave->mtd.size, slave->mtd.name); +- +- /* let's do some sanity checks */ +- if (slave->offset >= master->size) { +- /* let's register it anyway to preserve ordering */ +- slave->offset = 0; +- slave->mtd.size = 0; +- printk ("mtd: partition \"%s\" is out of reach -- disabled\n", +- parts[i].name); +- } +- if (slave->offset + slave->mtd.size > master->size) { +- slave->mtd.size = master->size - slave->offset; +- printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n", +- parts[i].name, master->name, slave->mtd.size); +- } +- if (master->numeraseregions>1) { +- /* Deal with variable erase size stuff */ +- int i; +- struct mtd_erase_region_info *regions = master->eraseregions; +- +- /* Find the first erase regions which is part of this partition. */ +- for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++) +- ; +- +- for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) { +- if (slave->mtd.erasesize < regions[i].erasesize) { +- slave->mtd.erasesize = regions[i].erasesize; +- } +- } +- } else { +- /* Single erase size */ +- slave->mtd.erasesize = master->erasesize; +- } +- +- if ((slave->mtd.flags & MTD_WRITEABLE) && +- (slave->offset % slave->mtd.erasesize)) { +- /* Doesn't start on a boundary of major erase size */ +- /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */ +- slave->mtd.flags &= ~MTD_WRITEABLE; +- printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n", +- parts[i].name); +- } +- if ((slave->mtd.flags & MTD_WRITEABLE) && +- (slave->mtd.size % slave->mtd.erasesize)) { +- slave->mtd.flags &= ~MTD_WRITEABLE; +- printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n", +- parts[i].name); +- } +- +- slave->mtd.ecclayout = master->ecclayout; +- if (master->block_isbad) { +- uint32_t offs = 0; +- +- while(offs < slave->mtd.size) { +- if (master->block_isbad(master, +- offs + slave->offset)) +- slave->mtd.ecc_stats.badblocks++; +- offs += slave->mtd.erasesize; +- } +- } +- +- if(parts[i].mtdp) +- { /* store the object pointer (caller may or may not register it */ +- *parts[i].mtdp = &slave->mtd; +- slave->registered = 0; +- } +- else +- { +- /* register our partition */ +- add_mtd_device(&slave->mtd); +- slave->registered = 1; ++#endif /* CONFIG_MTD_SPLIT_ROOTFS */ ++ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, i); + } + } + diff --git a/target/linux/generic-2.6/patches-2.6.22/065-block2mtd_init.patch b/target/linux/generic-2.6/patches-2.6.22/065-block2mtd_init.patch new file mode 100644 index 0000000000..c653c6a3f3 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/065-block2mtd_init.patch @@ -0,0 +1,113 @@ +diff -urN linux-2.6.21.1.old/drivers/mtd/devices/block2mtd.c linux-2.6.21.1.dev/drivers/mtd/devices/block2mtd.c +--- linux-2.6.21.1.old/drivers/mtd/devices/block2mtd.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/mtd/devices/block2mtd.c 2007-05-26 20:06:13.547923960 +0200 +@@ -16,6 +16,7 @@ + #include <linux/list.h> + #include <linux/init.h> + #include <linux/mtd/mtd.h> ++#include <linux/mtd/partitions.h> + #include <linux/buffer_head.h> + #include <linux/mutex.h> + #include <linux/mount.h> +@@ -237,10 +238,11 @@ + + + /* FIXME: ensure that mtd->size % erase_size == 0 */ +-static struct block2mtd_dev *add_device(char *devname, int erase_size) ++static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname) + { + struct block_device *bdev; + struct block2mtd_dev *dev; ++ struct mtd_partition *part; + + if (!devname) + return NULL; +@@ -279,14 +281,18 @@ + + /* Setup the MTD structure */ + /* make the name contain the block device in */ +- dev->mtd.name = kmalloc(sizeof("block2mtd: ") + strlen(devname), +- GFP_KERNEL); ++ ++ if (!mtdname) ++ mtdname = devname; ++ ++ dev->mtd.name = kmalloc(strlen(mtdname), GFP_KERNEL); ++ + if (!dev->mtd.name) + goto devinit_err; ++ ++ strcpy(dev->mtd.name, mtdname); + +- sprintf(dev->mtd.name, "block2mtd: %s", devname); +- +- dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK; ++ dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK & ~(erase_size - 1); + dev->mtd.erasesize = erase_size; + dev->mtd.writesize = 1; + dev->mtd.type = MTD_RAM; +@@ -298,15 +304,18 @@ + dev->mtd.read = block2mtd_read; + dev->mtd.priv = dev; + dev->mtd.owner = THIS_MODULE; +- +- if (add_mtd_device(&dev->mtd)) { ++ ++ part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL); ++ part->name = dev->mtd.name; ++ part->offset = 0; ++ part->size = dev->mtd.size; ++ if (add_mtd_partitions(&dev->mtd, part, 1)) { + /* Device didnt get added, so free the entry */ + goto devinit_err; + } + list_add(&dev->list, &blkmtd_device_list); + INFO("mtd%d: [%s] erase_size = %dKiB [%d]", dev->mtd.index, +- dev->mtd.name + strlen("blkmtd: "), +- dev->mtd.erasesize >> 10, dev->mtd.erasesize); ++ mtdname, dev->mtd.erasesize >> 10, dev->mtd.erasesize); + return dev; + + devinit_err: +@@ -379,9 +388,9 @@ + + static int block2mtd_setup2(const char *val) + { +- char buf[80 + 12]; /* 80 for device, 12 for erase size */ ++ char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */ + char *str = buf; +- char *token[2]; ++ char *token[3]; + char *name; + size_t erase_size = PAGE_SIZE; + int i, ret; +@@ -392,7 +401,7 @@ + strcpy(str, val); + kill_final_newline(str); + +- for (i = 0; i < 2; i++) ++ for (i = 0; i < 3; i++) + token[i] = strsep(&str, ","); + + if (str) +@@ -412,8 +421,10 @@ + parse_err("illegal erase size"); + } + } ++ if (token[2] && (strlen(token[2]) + 1 > 80)) ++ parse_err("mtd device name too long"); + +- add_device(name, erase_size); ++ add_device(name, erase_size, token[2]); + + return 0; + } +@@ -447,7 +458,7 @@ + + + module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200); +-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\""); ++MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\""); + + static int __init block2mtd_init(void) + { diff --git a/target/linux/generic-2.6/patches-2.6.22/100-netfilter_layer7_2.8.patch b/target/linux/generic-2.6/patches-2.6.22/100-netfilter_layer7_2.8.patch new file mode 100644 index 0000000000..caccaa7e54 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/100-netfilter_layer7_2.8.patch @@ -0,0 +1,2034 @@ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_layer7.h linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_layer7.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_layer7.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_layer7.h 2007-05-26 20:13:52.648130120 +0200 +@@ -0,0 +1,26 @@ ++/* ++ By Matthew Strait <quadong@users.sf.net>, Dec 2003. ++ http://l7-filter.sf.net ++ ++ This program is free software; you can redistribute it and/or ++ modify it under the terms of the GNU General Public License ++ as published by the Free Software Foundation; either version ++ 2 of the License, or (at your option) any later version. ++ http://www.gnu.org/licenses/gpl.txt ++*/ ++ ++#ifndef _IPT_LAYER7_H ++#define _IPT_LAYER7_H ++ ++#define MAX_PATTERN_LEN 8192 ++#define MAX_PROTOCOL_LEN 256 ++ ++typedef char *(*proc_ipt_search) (char *, char, char *); ++ ++struct ipt_layer7_info { ++ char protocol[MAX_PROTOCOL_LEN]; ++ char invert:1; ++ char pattern[MAX_PATTERN_LEN]; ++}; ++ ++#endif /* _IPT_LAYER7_H */ +diff -urN linux-2.6.21.1.old/net/netfilter/nf_conntrack_core.c linux-2.6.21.1.dev/net/netfilter/nf_conntrack_core.c +--- linux-2.6.21.1.old/net/netfilter/nf_conntrack_core.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/netfilter/nf_conntrack_core.c 2007-05-26 20:13:52.649129968 +0200 +@@ -330,6 +330,13 @@ + * too. */ + nf_ct_remove_expectations(ct); + ++ #if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE) ++ if(ct->layer7.app_proto) ++ kfree(ct->layer7.app_proto); ++ if(ct->layer7.app_data) ++ kfree(ct->layer7.app_data); ++ #endif ++ + /* We overload first tuple to link into unconfirmed list. */ + if (!nf_ct_is_confirmed(ct)) { + BUG_ON(list_empty(&ct->tuplehash[IP_CT_DIR_ORIGINAL].list)); +diff -urN linux-2.6.21.1.old/net/netfilter/nf_conntrack_standalone.c linux-2.6.21.1.dev/net/netfilter/nf_conntrack_standalone.c +--- linux-2.6.21.1.old/net/netfilter/nf_conntrack_standalone.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/netfilter/nf_conntrack_standalone.c 2007-05-26 20:13:52.649129968 +0200 +@@ -184,6 +184,12 @@ + return -ENOSPC; + #endif + ++#if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE) ++ if(conntrack->layer7.app_proto) ++ if (seq_printf(s, "l7proto=%s ",conntrack->layer7.app_proto)) ++ return 1; ++#endif ++ + if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use))) + return -ENOSPC; + +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/ipt_layer7.c linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_layer7.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/ipt_layer7.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_layer7.c 2007-05-26 20:13:52.650129816 +0200 +@@ -0,0 +1,573 @@ ++/* ++ Kernel module to match application layer (OSI layer 7) data in connections. ++ ++ http://l7-filter.sf.net ++ ++ By Matthew Strait and Ethan Sommer, 2003-2006. ++ ++ This program is free software; you can redistribute it and/or ++ modify it under the terms of the GNU General Public License ++ as published by the Free Software Foundation; either version ++ 2 of the License, or (at your option) any later version. ++ http://www.gnu.org/licenses/gpl.txt ++ ++ Based on ipt_string.c (C) 2000 Emmanuel Roger <winfield@freegates.be> ++ and cls_layer7.c (C) 2003 Matthew Strait, Ethan Sommer, Justin Levandoski ++*/ ++ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_conntrack.h> ++#include <linux/proc_fs.h> ++#include <linux/ctype.h> ++#include <net/ip.h> ++#include <net/tcp.h> ++#include <linux/spinlock.h> ++ ++#include "regexp/regexp.c" ++ ++#include <linux/netfilter_ipv4/ipt_layer7.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++ ++MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>"); ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("iptables application layer match module"); ++MODULE_VERSION("2.0"); ++ ++static int maxdatalen = 2048; // this is the default ++module_param(maxdatalen, int, 0444); ++MODULE_PARM_DESC(maxdatalen, "maximum bytes of data looked at by l7-filter"); ++ ++#ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG ++ #define DPRINTK(format,args...) printk(format,##args) ++#else ++ #define DPRINTK(format,args...) ++#endif ++ ++#define TOTAL_PACKETS master_conntrack->counters[IP_CT_DIR_ORIGINAL].packets + \ ++ master_conntrack->counters[IP_CT_DIR_REPLY].packets ++ ++/* Number of packets whose data we look at. ++This can be modified through /proc/net/layer7_numpackets */ ++static int num_packets = 10; ++ ++static struct pattern_cache { ++ char * regex_string; ++ regexp * pattern; ++ struct pattern_cache * next; ++} * first_pattern_cache = NULL; ++ ++/* I'm new to locking. Here are my assumptions: ++ ++- No one will write to /proc/net/layer7_numpackets over and over very fast; ++ if they did, nothing awful would happen. ++ ++- This code will never be processing the same packet twice at the same time, ++ because iptables rules are traversed in order. ++ ++- It doesn't matter if two packets from different connections are in here at ++ the same time, because they don't share any data. ++ ++- It _does_ matter if two packets from the same connection (or one from a ++ master and one from its child) are here at the same time. In this case, ++ we have to protect the conntracks and the list of compiled patterns. ++*/ ++DEFINE_RWLOCK(ct_lock); ++DEFINE_SPINLOCK(list_lock); ++ ++#ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG ++/* Converts an unfriendly string into a friendly one by ++replacing unprintables with periods and all whitespace with " ". */ ++static char * friendly_print(unsigned char * s) ++{ ++ char * f = kmalloc(strlen(s) + 1, GFP_ATOMIC); ++ int i; ++ ++ if(!f) { ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in friendly_print, bailing.\n"); ++ return NULL; ++ } ++ ++ for(i = 0; i < strlen(s); i++){ ++ if(isprint(s[i]) && s[i] < 128) f[i] = s[i]; ++ else if(isspace(s[i])) f[i] = ' '; ++ else f[i] = '.'; ++ } ++ f[i] = '\0'; ++ return f; ++} ++ ++static char dec2hex(int i) ++{ ++ switch (i) { ++ case 0 ... 9: ++ return (char)(i + '0'); ++ break; ++ case 10 ... 15: ++ return (char)(i - 10 + 'a'); ++ break; ++ default: ++ if (net_ratelimit()) ++ printk("Problem in dec2hex\n"); ++ return '\0'; ++ } ++} ++ ++static char * hex_print(unsigned char * s) ++{ ++ char * g = kmalloc(strlen(s)*3 + 1, GFP_ATOMIC); ++ int i; ++ ++ if(!g) { ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in hex_print, bailing.\n"); ++ return NULL; ++ } ++ ++ for(i = 0; i < strlen(s); i++) { ++ g[i*3 ] = dec2hex(s[i]/16); ++ g[i*3 + 1] = dec2hex(s[i]%16); ++ g[i*3 + 2] = ' '; ++ } ++ g[i*3] = '\0'; ++ ++ return g; ++} ++#endif // DEBUG ++ ++/* Use instead of regcomp. As we expect to be seeing the same regexps over and ++over again, it make sense to cache the results. */ ++static regexp * compile_and_cache(char * regex_string, char * protocol) ++{ ++ struct pattern_cache * node = first_pattern_cache; ++ struct pattern_cache * last_pattern_cache = first_pattern_cache; ++ struct pattern_cache * tmp; ++ unsigned int len; ++ ++ while (node != NULL) { ++ if (!strcmp(node->regex_string, regex_string)) ++ return node->pattern; ++ ++ last_pattern_cache = node;/* points at the last non-NULL node */ ++ node = node->next; ++ } ++ ++ /* If we reach the end of the list, then we have not yet cached ++ the pattern for this regex. Let's do that now. ++ Be paranoid about running out of memory to avoid list corruption. */ ++ tmp = kmalloc(sizeof(struct pattern_cache), GFP_ATOMIC); ++ ++ if(!tmp) { ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n"); ++ return NULL; ++ } ++ ++ tmp->regex_string = kmalloc(strlen(regex_string) + 1, GFP_ATOMIC); ++ tmp->pattern = kmalloc(sizeof(struct regexp), GFP_ATOMIC); ++ tmp->next = NULL; ++ ++ if(!tmp->regex_string || !tmp->pattern) { ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n"); ++ kfree(tmp->regex_string); ++ kfree(tmp->pattern); ++ kfree(tmp); ++ return NULL; ++ } ++ ++ /* Ok. The new node is all ready now. */ ++ node = tmp; ++ ++ if(first_pattern_cache == NULL) /* list is empty */ ++ first_pattern_cache = node; /* make node the beginning */ ++ else ++ last_pattern_cache->next = node; /* attach node to the end */ ++ ++ /* copy the string and compile the regex */ ++ len = strlen(regex_string); ++ DPRINTK("About to compile this: \"%s\"\n", regex_string); ++ node->pattern = regcomp(regex_string, &len); ++ if ( !node->pattern ) { ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: Error compiling regexp \"%s\" (%s)\n", regex_string, protocol); ++ /* pattern is now cached as NULL, so we won't try again. */ ++ } ++ ++ strcpy(node->regex_string, regex_string); ++ return node->pattern; ++} ++ ++static int can_handle(const struct sk_buff *skb) ++{ ++ if(!ip_hdr(skb)) /* not IP */ ++ return 0; ++ if(ip_hdr(skb)->protocol != IPPROTO_TCP && ++ ip_hdr(skb)->protocol != IPPROTO_UDP && ++ ip_hdr(skb)->protocol != IPPROTO_ICMP) ++ return 0; ++ return 1; ++} ++ ++/* Returns offset the into the skb->data that the application data starts */ ++static int app_data_offset(const struct sk_buff *skb) ++{ ++ /* In case we are ported somewhere (ebtables?) where ip_hdr(skb) ++ isn't set, this can be gotten from 4*(skb->data[0] & 0x0f) as well. */ ++ int ip_hl = ip_hdrlen(skb); ++ ++ if( ip_hdr(skb)->protocol == IPPROTO_TCP ) { ++ /* 12 == offset into TCP header for the header length field. ++ Can't get this with skb->h.th->doff because the tcphdr ++ struct doesn't get set when routing (this is confirmed to be ++ true in Netfilter as well as QoS.) */ ++ int tcp_hl = 4*(skb->data[ip_hl + 12] >> 4); ++ ++ return ip_hl + tcp_hl; ++ } else if( ip_hdr(skb)->protocol == IPPROTO_UDP ) { ++ return ip_hl + 8; /* UDP header is always 8 bytes */ ++ } else if( ip_hdr(skb)->protocol == IPPROTO_ICMP ) { ++ return ip_hl + 8; /* ICMP header is 8 bytes */ ++ } else { ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: tried to handle unknown protocol!\n"); ++ return ip_hl + 8; /* something reasonable */ ++ } ++} ++ ++/* handles whether there's a match when we aren't appending data anymore */ ++static int match_no_append(struct ip_conntrack * conntrack, struct ip_conntrack * master_conntrack, ++ enum ip_conntrack_info ctinfo, enum ip_conntrack_info master_ctinfo, ++ struct ipt_layer7_info * info) ++{ ++ /* If we're in here, throw the app data away */ ++ write_lock(&ct_lock); ++ if(master_conntrack->layer7.app_data != NULL) { ++ ++ #ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG ++ if(!master_conntrack->layer7.app_proto) { ++ char * f = friendly_print(master_conntrack->layer7.app_data); ++ char * g = hex_print(master_conntrack->layer7.app_data); ++ DPRINTK("\nl7-filter gave up after %d bytes (%d packets):\n%s\n", ++ strlen(f), TOTAL_PACKETS, f); ++ kfree(f); ++ DPRINTK("In hex: %s\n", g); ++ kfree(g); ++ } ++ #endif ++ ++ kfree(master_conntrack->layer7.app_data); ++ master_conntrack->layer7.app_data = NULL; /* don't free again */ ++ } ++ write_unlock(&ct_lock); ++ ++ if(master_conntrack->layer7.app_proto){ ++ /* Here child connections set their .app_proto (for /proc/net/ip_conntrack) */ ++ write_lock(&ct_lock); ++ if(!conntrack->layer7.app_proto) { ++ conntrack->layer7.app_proto = kmalloc(strlen(master_conntrack->layer7.app_proto)+1, GFP_ATOMIC); ++ if(!conntrack->layer7.app_proto){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n"); ++ write_unlock(&ct_lock); ++ return 1; ++ } ++ strcpy(conntrack->layer7.app_proto, master_conntrack->layer7.app_proto); ++ } ++ write_unlock(&ct_lock); ++ ++ return (!strcmp(master_conntrack->layer7.app_proto, info->protocol)); ++ } ++ else { ++ /* If not classified, set to "unknown" to distinguish from ++ connections that are still being tested. */ ++ write_lock(&ct_lock); ++ master_conntrack->layer7.app_proto = kmalloc(strlen("unknown")+1, GFP_ATOMIC); ++ if(!master_conntrack->layer7.app_proto){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n"); ++ write_unlock(&ct_lock); ++ return 1; ++ } ++ strcpy(master_conntrack->layer7.app_proto, "unknown"); ++ write_unlock(&ct_lock); ++ return 0; ++ } ++} ++ ++/* add the new app data to the conntrack. Return number of bytes added. */ ++static int add_data(struct ip_conntrack * master_conntrack, ++ char * app_data, int appdatalen) ++{ ++ int length = 0, i; ++ int oldlength = master_conntrack->layer7.app_data_len; ++ ++ // This is a fix for a race condition by Deti Fliegl. However, I'm not ++ // clear on whether the race condition exists or whether this really ++ // fixes it. I might just be being dense... Anyway, if it's not really ++ // a fix, all it does is waste a very small amount of time. ++ if(!master_conntrack->layer7.app_data) return 0; ++ ++ /* Strip nulls. Make everything lower case (our regex lib doesn't ++ do case insensitivity). Add it to the end of the current data. */ ++ for(i = 0; i < maxdatalen-oldlength-1 && ++ i < appdatalen; i++) { ++ if(app_data[i] != '\0') { ++ master_conntrack->layer7.app_data[length+oldlength] = ++ /* the kernel version of tolower mungs 'upper ascii' */ ++ isascii(app_data[i])? tolower(app_data[i]) : app_data[i]; ++ length++; ++ } ++ } ++ ++ master_conntrack->layer7.app_data[length+oldlength] = '\0'; ++ master_conntrack->layer7.app_data_len = length + oldlength; ++ ++ return length; ++} ++ ++/* Returns true on match and false otherwise. */ ++static int match(const struct sk_buff *skbin, ++ const struct net_device *in, const struct net_device *out, ++ const struct xt_match *match, const void *matchinfo, ++ int offset, unsigned int protoff, int *hotdrop) ++{ ++ /* sidestep const without getting a compiler warning... */ ++ struct sk_buff * skb = (struct sk_buff *)skbin; ++ ++ struct ipt_layer7_info * info = (struct ipt_layer7_info *)matchinfo; ++ enum ip_conntrack_info master_ctinfo, ctinfo; ++ struct ip_conntrack *master_conntrack, *conntrack; ++ unsigned char * app_data; ++ unsigned int pattern_result, appdatalen; ++ regexp * comppattern; ++ ++ if(!can_handle(skb)){ ++ DPRINTK("layer7: This is some protocol I can't handle.\n"); ++ return info->invert; ++ } ++ ++ /* Treat parent & all its children together as one connection, except ++ for the purpose of setting conntrack->layer7.app_proto in the actual ++ connection. This makes /proc/net/ip_conntrack more satisfying. */ ++ if(!(conntrack = ip_conntrack_get((struct sk_buff *)skb, &ctinfo)) || ++ !(master_conntrack = ip_conntrack_get((struct sk_buff *)skb, &master_ctinfo))) { ++ //DPRINTK("layer7: packet is not from a known connection, giving up.\n"); ++ return info->invert; ++ } ++ ++ /* Try to get a master conntrack (and its master etc) for FTP, etc. */ ++ while (master_ct(master_conntrack) != NULL) ++ master_conntrack = master_ct(master_conntrack); ++ ++ /* if we've classified it or seen too many packets */ ++ if(TOTAL_PACKETS > num_packets || ++ master_conntrack->layer7.app_proto) { ++ ++ pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info); ++ ++ /* skb->cb[0] == seen. Avoid doing things twice if there are two l7 ++ rules. I'm not sure that using cb for this purpose is correct, although ++ it says "put your private variables there". But it doesn't look like it ++ is being used for anything else in the skbs that make it here. How can ++ I write to cb without making the compiler angry? */ ++ skb->cb[0] = 1; /* marking it seen here is probably irrelevant, but consistant */ ++ ++ return (pattern_result ^ info->invert); ++ } ++ ++ if(skb_is_nonlinear(skb)){ ++ if(skb_linearize(skb) != 0){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: failed to linearize packet, bailing.\n"); ++ return info->invert; ++ } ++ } ++ ++ /* now that the skb is linearized, it's safe to set these. */ ++ app_data = skb->data + app_data_offset(skb); ++ appdatalen = skb->tail - app_data; ++ ++ spin_lock_bh(&list_lock); ++ /* the return value gets checked later, when we're ready to use it */ ++ comppattern = compile_and_cache(info->pattern, info->protocol); ++ spin_unlock_bh(&list_lock); ++ ++ /* On the first packet of a connection, allocate space for app data */ ++ write_lock(&ct_lock); ++ if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) { ++ master_conntrack->layer7.app_data = kmalloc(maxdatalen, GFP_ATOMIC); ++ if(!master_conntrack->layer7.app_data){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n"); ++ write_unlock(&ct_lock); ++ return info->invert; ++ } ++ ++ master_conntrack->layer7.app_data[0] = '\0'; ++ } ++ write_unlock(&ct_lock); ++ ++ /* Can be here, but unallocated, if numpackets is increased near ++ the beginning of a connection */ ++ if(master_conntrack->layer7.app_data == NULL) ++ return (info->invert); /* unmatched */ ++ ++ if(!skb->cb[0]){ ++ int newbytes; ++ write_lock(&ct_lock); ++ newbytes = add_data(master_conntrack, app_data, appdatalen); ++ write_unlock(&ct_lock); ++ ++ if(newbytes == 0) { /* didn't add any data */ ++ skb->cb[0] = 1; ++ /* Didn't match before, not going to match now */ ++ return info->invert; ++ } ++ } ++ ++ /* If looking for "unknown", then never match. "Unknown" means that ++ we've given up; we're still trying with these packets. */ ++ read_lock(&ct_lock); ++ if(!strcmp(info->protocol, "unknown")) { ++ pattern_result = 0; ++ /* If the regexp failed to compile, don't bother running it */ ++ } else if(comppattern && regexec(comppattern, master_conntrack->layer7.app_data)) { ++ DPRINTK("layer7: matched %s\n", info->protocol); ++ pattern_result = 1; ++ } else pattern_result = 0; ++ read_unlock(&ct_lock); ++ ++ if(pattern_result) { ++ write_lock(&ct_lock); ++ master_conntrack->layer7.app_proto = kmalloc(strlen(info->protocol)+1, GFP_ATOMIC); ++ if(!master_conntrack->layer7.app_proto){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n"); ++ write_unlock(&ct_lock); ++ return (pattern_result ^ info->invert); ++ } ++ strcpy(master_conntrack->layer7.app_proto, info->protocol); ++ write_unlock(&ct_lock); ++ } ++ ++ /* mark the packet seen */ ++ skb->cb[0] = 1; ++ ++ return (pattern_result ^ info->invert); ++} ++ ++static struct ipt_match layer7_match = { ++ .name = "layer7", ++ .match = &match, ++ .matchsize = sizeof(struct ipt_layer7_info), ++ .me = THIS_MODULE ++}; ++ ++/* taken from drivers/video/modedb.c */ ++static int my_atoi(const char *s) ++{ ++ int val = 0; ++ ++ for (;; s++) { ++ switch (*s) { ++ case '0'...'9': ++ val = 10*val+(*s-'0'); ++ break; ++ default: ++ return val; ++ } ++ } ++} ++ ++/* write out num_packets to userland. */ ++static int layer7_read_proc(char* page, char ** start, off_t off, int count, ++ int* eof, void * data) ++{ ++ if(num_packets > 99 && net_ratelimit()) ++ printk(KERN_ERR "layer7: NOT REACHED. num_packets too big\n"); ++ ++ page[0] = num_packets/10 + '0'; ++ page[1] = num_packets%10 + '0'; ++ page[2] = '\n'; ++ page[3] = '\0'; ++ ++ *eof=1; ++ ++ return 3; ++} ++ ++/* Read in num_packets from userland */ ++static int layer7_write_proc(struct file* file, const char* buffer, ++ unsigned long count, void *data) ++{ ++ char * foo = kmalloc(count, GFP_ATOMIC); ++ ++ if(!foo){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory, bailing. num_packets unchanged.\n"); ++ return count; ++ } ++ ++ if(copy_from_user(foo, buffer, count)) { ++ return -EFAULT; ++ } ++ ++ ++ num_packets = my_atoi(foo); ++ kfree (foo); ++ ++ /* This has an arbitrary limit to make the math easier. I'm lazy. ++ But anyway, 99 is a LOT! If you want more, you're doing it wrong! */ ++ if(num_packets > 99) { ++ printk(KERN_WARNING "layer7: num_packets can't be > 99.\n"); ++ num_packets = 99; ++ } else if(num_packets < 1) { ++ printk(KERN_WARNING "layer7: num_packets can't be < 1.\n"); ++ num_packets = 1; ++ } ++ ++ return count; ++} ++ ++/* register the proc file */ ++static void layer7_init_proc(void) ++{ ++ struct proc_dir_entry* entry; ++ entry = create_proc_entry("layer7_numpackets", 0644, proc_net); ++ entry->read_proc = layer7_read_proc; ++ entry->write_proc = layer7_write_proc; ++} ++ ++static void layer7_cleanup_proc(void) ++{ ++ remove_proc_entry("layer7_numpackets", proc_net); ++} ++ ++static int __init ipt_layer7_init(void) ++{ ++ need_conntrack(); ++ ++ layer7_init_proc(); ++ if(maxdatalen < 1) { ++ printk(KERN_WARNING "layer7: maxdatalen can't be < 1, using 1\n"); ++ maxdatalen = 1; ++ } ++ /* This is not a hard limit. It's just here to prevent people from ++ bringing their slow machines to a grinding halt. */ ++ else if(maxdatalen > 65536) { ++ printk(KERN_WARNING "layer7: maxdatalen can't be > 65536, using 65536\n"); ++ maxdatalen = 65536; ++ } ++ return ipt_register_match(&layer7_match); ++} ++ ++static void __exit ipt_layer7_fini(void) ++{ ++ layer7_cleanup_proc(); ++ ipt_unregister_match(&layer7_match); ++} ++ ++module_init(ipt_layer7_init); ++module_exit(ipt_layer7_fini); +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig 2007-05-26 20:13:52.650129816 +0200 +@@ -63,6 +63,24 @@ + + To compile it as a module, choose M here. If unsure, say N. + ++config IP_NF_MATCH_LAYER7 ++ tristate "Layer 7 match support (EXPERIMENTAL)" ++ depends on IP_NF_IPTABLES && IP_NF_CT_ACCT && IP_NF_CONNTRACK && EXPERIMENTAL ++ help ++ Say Y if you want to be able to classify connections (and their ++ packets) based on regular expression matching of their application ++ layer data. This is one way to classify applications such as ++ peer-to-peer filesharing systems that do not always use the same ++ port. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_MATCH_LAYER7_DEBUG ++ bool "Layer 7 debugging output" ++ depends on IP_NF_MATCH_LAYER7 ++ help ++ Say Y to get lots of debugging output. ++ + config IP_NF_MATCH_TOS + tristate "TOS match support" + depends on IP_NF_IPTABLES +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Makefile linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv4/netfilter/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile 2007-05-26 20:13:52.651129664 +0200 +@@ -50,6 +50,8 @@ + obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o + obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o + ++obj-$(CONFIG_IP_NF_MATCH_LAYER7) += ipt_layer7.o ++ + # targets + obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o + obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regexp.c linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regexp.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regexp.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regexp.c 2007-05-26 20:13:52.652129512 +0200 +@@ -0,0 +1,1197 @@ ++/* ++ * regcomp and regexec -- regsub and regerror are elsewhere ++ * @(#)regexp.c 1.3 of 18 April 87 ++ * ++ * Copyright (c) 1986 by University of Toronto. ++ * Written by Henry Spencer. Not derived from licensed software. ++ * ++ * Permission is granted to anyone to use this software for any ++ * purpose on any computer system, and to redistribute it freely, ++ * subject to the following restrictions: ++ * ++ * 1. The author is not responsible for the consequences of use of ++ * this software, no matter how awful, even if they arise ++ * from defects in it. ++ * ++ * 2. The origin of this software must not be misrepresented, either ++ * by explicit claim or by omission. ++ * ++ * 3. Altered versions must be plainly marked as such, and must not ++ * be misrepresented as being the original software. ++ * ++ * Beware that some of this code is subtly aware of the way operator ++ * precedence is structured in regular expressions. Serious changes in ++ * regular-expression syntax might require a total rethink. ++ * ++ * This code was modified by Ethan Sommer to work within the kernel ++ * (it now uses kmalloc etc..) ++ * ++ * Modified slightly by Matthew Strait to use more modern C. ++ */ ++ ++#include "regexp.h" ++#include "regmagic.h" ++ ++/* added by ethan and matt. Lets it work in both kernel and user space. ++(So iptables can use it, for instance.) Yea, it goes both ways... */ ++#if __KERNEL__ ++ #define malloc(foo) kmalloc(foo,GFP_ATOMIC) ++#else ++ #define printk(format,args...) printf(format,##args) ++#endif ++ ++void regerror(char * s) ++{ ++ printk("<3>Regexp: %s\n", s); ++ /* NOTREACHED */ ++} ++ ++/* ++ * The "internal use only" fields in regexp.h are present to pass info from ++ * compile to execute that permits the execute phase to run lots faster on ++ * simple cases. They are: ++ * ++ * regstart char that must begin a match; '\0' if none obvious ++ * reganch is the match anchored (at beginning-of-line only)? ++ * regmust string (pointer into program) that match must include, or NULL ++ * regmlen length of regmust string ++ * ++ * Regstart and reganch permit very fast decisions on suitable starting points ++ * for a match, cutting down the work a lot. Regmust permits fast rejection ++ * of lines that cannot possibly match. The regmust tests are costly enough ++ * that regcomp() supplies a regmust only if the r.e. contains something ++ * potentially expensive (at present, the only such thing detected is * or + ++ * at the start of the r.e., which can involve a lot of backup). Regmlen is ++ * supplied because the test in regexec() needs it and regcomp() is computing ++ * it anyway. ++ */ ++ ++/* ++ * Structure for regexp "program". This is essentially a linear encoding ++ * of a nondeterministic finite-state machine (aka syntax charts or ++ * "railroad normal form" in parsing technology). Each node is an opcode ++ * plus a "next" pointer, possibly plus an operand. "Next" pointers of ++ * all nodes except BRANCH implement concatenation; a "next" pointer with ++ * a BRANCH on both ends of it is connecting two alternatives. (Here we ++ * have one of the subtle syntax dependencies: an individual BRANCH (as ++ * opposed to a collection of them) is never concatenated with anything ++ * because of operator precedence.) The operand of some types of node is ++ * a literal string; for others, it is a node leading into a sub-FSM. In ++ * particular, the operand of a BRANCH node is the first node of the branch. ++ * (NB this is *not* a tree structure: the tail of the branch connects ++ * to the thing following the set of BRANCHes.) The opcodes are: ++ */ ++ ++/* definition number opnd? meaning */ ++#define END 0 /* no End of program. */ ++#define BOL 1 /* no Match "" at beginning of line. */ ++#define EOL 2 /* no Match "" at end of line. */ ++#define ANY 3 /* no Match any one character. */ ++#define ANYOF 4 /* str Match any character in this string. */ ++#define ANYBUT 5 /* str Match any character not in this string. */ ++#define BRANCH 6 /* node Match this alternative, or the next... */ ++#define BACK 7 /* no Match "", "next" ptr points backward. */ ++#define EXACTLY 8 /* str Match this string. */ ++#define NOTHING 9 /* no Match empty string. */ ++#define STAR 10 /* node Match this (simple) thing 0 or more times. */ ++#define PLUS 11 /* node Match this (simple) thing 1 or more times. */ ++#define OPEN 20 /* no Mark this point in input as start of #n. */ ++ /* OPEN+1 is number 1, etc. */ ++#define CLOSE 30 /* no Analogous to OPEN. */ ++ ++/* ++ * Opcode notes: ++ * ++ * BRANCH The set of branches constituting a single choice are hooked ++ * together with their "next" pointers, since precedence prevents ++ * anything being concatenated to any individual branch. The ++ * "next" pointer of the last BRANCH in a choice points to the ++ * thing following the whole choice. This is also where the ++ * final "next" pointer of each individual branch points; each ++ * branch starts with the operand node of a BRANCH node. ++ * ++ * BACK Normal "next" pointers all implicitly point forward; BACK ++ * exists to make loop structures possible. ++ * ++ * STAR,PLUS '?', and complex '*' and '+', are implemented as circular ++ * BRANCH structures using BACK. Simple cases (one character ++ * per match) are implemented with STAR and PLUS for speed ++ * and to minimize recursive plunges. ++ * ++ * OPEN,CLOSE ...are numbered at compile time. ++ */ ++ ++/* ++ * A node is one char of opcode followed by two chars of "next" pointer. ++ * "Next" pointers are stored as two 8-bit pieces, high order first. The ++ * value is a positive offset from the opcode of the node containing it. ++ * An operand, if any, simply follows the node. (Note that much of the ++ * code generation knows about this implicit relationship.) ++ * ++ * Using two bytes for the "next" pointer is vast overkill for most things, ++ * but allows patterns to get big without disasters. ++ */ ++#define OP(p) (*(p)) ++#define NEXT(p) (((*((p)+1)&0377)<<8) + (*((p)+2)&0377)) ++#define OPERAND(p) ((p) + 3) ++ ++/* ++ * See regmagic.h for one further detail of program structure. ++ */ ++ ++ ++/* ++ * Utility definitions. ++ */ ++#ifndef CHARBITS ++#define UCHARAT(p) ((int)*(unsigned char *)(p)) ++#else ++#define UCHARAT(p) ((int)*(p)&CHARBITS) ++#endif ++ ++#define FAIL(m) { regerror(m); return(NULL); } ++#define ISMULT(c) ((c) == '*' || (c) == '+' || (c) == '?') ++#define META "^$.[()|?+*\\" ++ ++/* ++ * Flags to be passed up and down. ++ */ ++#define HASWIDTH 01 /* Known never to match null string. */ ++#define SIMPLE 02 /* Simple enough to be STAR/PLUS operand. */ ++#define SPSTART 04 /* Starts with * or +. */ ++#define WORST 0 /* Worst case. */ ++ ++/* ++ * Global work variables for regcomp(). ++ */ ++struct match_globals { ++char *reginput; /* String-input pointer. */ ++char *regbol; /* Beginning of input, for ^ check. */ ++char **regstartp; /* Pointer to startp array. */ ++char **regendp; /* Ditto for endp. */ ++char *regparse; /* Input-scan pointer. */ ++int regnpar; /* () count. */ ++char regdummy; ++char *regcode; /* Code-emit pointer; ®dummy = don't. */ ++long regsize; /* Code size. */ ++}; ++ ++/* ++ * Forward declarations for regcomp()'s friends. ++ */ ++#ifndef STATIC ++#define STATIC static ++#endif ++STATIC char *reg(struct match_globals *g, int paren,int *flagp); ++STATIC char *regbranch(struct match_globals *g, int *flagp); ++STATIC char *regpiece(struct match_globals *g, int *flagp); ++STATIC char *regatom(struct match_globals *g, int *flagp); ++STATIC char *regnode(struct match_globals *g, char op); ++STATIC char *regnext(struct match_globals *g, char *p); ++STATIC void regc(struct match_globals *g, char b); ++STATIC void reginsert(struct match_globals *g, char op, char *opnd); ++STATIC void regtail(struct match_globals *g, char *p, char *val); ++STATIC void regoptail(struct match_globals *g, char *p, char *val); ++ ++ ++__kernel_size_t my_strcspn(const char *s1,const char *s2) ++{ ++ char *scan1; ++ char *scan2; ++ int count; ++ ++ count = 0; ++ for (scan1 = (char *)s1; *scan1 != '\0'; scan1++) { ++ for (scan2 = (char *)s2; *scan2 != '\0';) /* ++ moved down. */ ++ if (*scan1 == *scan2++) ++ return(count); ++ count++; ++ } ++ return(count); ++} ++ ++/* ++ - regcomp - compile a regular expression into internal code ++ * ++ * We can't allocate space until we know how big the compiled form will be, ++ * but we can't compile it (and thus know how big it is) until we've got a ++ * place to put the code. So we cheat: we compile it twice, once with code ++ * generation turned off and size counting turned on, and once "for real". ++ * This also means that we don't allocate space until we are sure that the ++ * thing really will compile successfully, and we never have to move the ++ * code and thus invalidate pointers into it. (Note that it has to be in ++ * one piece because free() must be able to free it all.) ++ * ++ * Beware that the optimization-preparation code in here knows about some ++ * of the structure of the compiled regexp. ++ */ ++regexp * ++regcomp(char *exp,int *patternsize) ++{ ++ register regexp *r; ++ register char *scan; ++ register char *longest; ++ register int len; ++ int flags; ++ struct match_globals g; ++ ++ /* commented out by ethan ++ extern char *malloc(); ++ */ ++ ++ if (exp == NULL) ++ FAIL("NULL argument"); ++ ++ /* First pass: determine size, legality. */ ++ g.regparse = exp; ++ g.regnpar = 1; ++ g.regsize = 0L; ++ g.regcode = &g.regdummy; ++ regc(&g, MAGIC); ++ if (reg(&g, 0, &flags) == NULL) ++ return(NULL); ++ ++ /* Small enough for pointer-storage convention? */ ++ if (g.regsize >= 32767L) /* Probably could be 65535L. */ ++ FAIL("regexp too big"); ++ ++ /* Allocate space. */ ++ *patternsize=sizeof(regexp) + (unsigned)g.regsize; ++ r = (regexp *)malloc(sizeof(regexp) + (unsigned)g.regsize); ++ if (r == NULL) ++ FAIL("out of space"); ++ ++ /* Second pass: emit code. */ ++ g.regparse = exp; ++ g.regnpar = 1; ++ g.regcode = r->program; ++ regc(&g, MAGIC); ++ if (reg(&g, 0, &flags) == NULL) ++ return(NULL); ++ ++ /* Dig out information for optimizations. */ ++ r->regstart = '\0'; /* Worst-case defaults. */ ++ r->reganch = 0; ++ r->regmust = NULL; ++ r->regmlen = 0; ++ scan = r->program+1; /* First BRANCH. */ ++ if (OP(regnext(&g, scan)) == END) { /* Only one top-level choice. */ ++ scan = OPERAND(scan); ++ ++ /* Starting-point info. */ ++ if (OP(scan) == EXACTLY) ++ r->regstart = *OPERAND(scan); ++ else if (OP(scan) == BOL) ++ r->reganch++; ++ ++ /* ++ * If there's something expensive in the r.e., find the ++ * longest literal string that must appear and make it the ++ * regmust. Resolve ties in favor of later strings, since ++ * the regstart check works with the beginning of the r.e. ++ * and avoiding duplication strengthens checking. Not a ++ * strong reason, but sufficient in the absence of others. ++ */ ++ if (flags&SPSTART) { ++ longest = NULL; ++ len = 0; ++ for (; scan != NULL; scan = regnext(&g, scan)) ++ if (OP(scan) == EXACTLY && strlen(OPERAND(scan)) >= len) { ++ longest = OPERAND(scan); ++ len = strlen(OPERAND(scan)); ++ } ++ r->regmust = longest; ++ r->regmlen = len; ++ } ++ } ++ ++ return(r); ++} ++ ++/* ++ - reg - regular expression, i.e. main body or parenthesized thing ++ * ++ * Caller must absorb opening parenthesis. ++ * ++ * Combining parenthesis handling with the base level of regular expression ++ * is a trifle forced, but the need to tie the tails of the branches to what ++ * follows makes it hard to avoid. ++ */ ++static char * ++reg(struct match_globals *g, int paren, int *flagp /* Parenthesized? */ ) ++{ ++ register char *ret; ++ register char *br; ++ register char *ender; ++ register int parno = 0; /* 0 makes gcc happy */ ++ int flags; ++ ++ *flagp = HASWIDTH; /* Tentatively. */ ++ ++ /* Make an OPEN node, if parenthesized. */ ++ if (paren) { ++ if (g->regnpar >= NSUBEXP) ++ FAIL("too many ()"); ++ parno = g->regnpar; ++ g->regnpar++; ++ ret = regnode(g, OPEN+parno); ++ } else ++ ret = NULL; ++ ++ /* Pick up the branches, linking them together. */ ++ br = regbranch(g, &flags); ++ if (br == NULL) ++ return(NULL); ++ if (ret != NULL) ++ regtail(g, ret, br); /* OPEN -> first. */ ++ else ++ ret = br; ++ if (!(flags&HASWIDTH)) ++ *flagp &= ~HASWIDTH; ++ *flagp |= flags&SPSTART; ++ while (*g->regparse == '|') { ++ g->regparse++; ++ br = regbranch(g, &flags); ++ if (br == NULL) ++ return(NULL); ++ regtail(g, ret, br); /* BRANCH -> BRANCH. */ ++ if (!(flags&HASWIDTH)) ++ *flagp &= ~HASWIDTH; ++ *flagp |= flags&SPSTART; ++ } ++ ++ /* Make a closing node, and hook it on the end. */ ++ ender = regnode(g, (paren) ? CLOSE+parno : END); ++ regtail(g, ret, ender); ++ ++ /* Hook the tails of the branches to the closing node. */ ++ for (br = ret; br != NULL; br = regnext(g, br)) ++ regoptail(g, br, ender); ++ ++ /* Check for proper termination. */ ++ if (paren && *g->regparse++ != ')') { ++ FAIL("unmatched ()"); ++ } else if (!paren && *g->regparse != '\0') { ++ if (*g->regparse == ')') { ++ FAIL("unmatched ()"); ++ } else ++ FAIL("junk on end"); /* "Can't happen". */ ++ /* NOTREACHED */ ++ } ++ ++ return(ret); ++} ++ ++/* ++ - regbranch - one alternative of an | operator ++ * ++ * Implements the concatenation operator. ++ */ ++static char * ++regbranch(struct match_globals *g, int *flagp) ++{ ++ register char *ret; ++ register char *chain; ++ register char *latest; ++ int flags; ++ ++ *flagp = WORST; /* Tentatively. */ ++ ++ ret = regnode(g, BRANCH); ++ chain = NULL; ++ while (*g->regparse != '\0' && *g->regparse != '|' && *g->regparse != ')') { ++ latest = regpiece(g, &flags); ++ if (latest == NULL) ++ return(NULL); ++ *flagp |= flags&HASWIDTH; ++ if (chain == NULL) /* First piece. */ ++ *flagp |= flags&SPSTART; ++ else ++ regtail(g, chain, latest); ++ chain = latest; ++ } ++ if (chain == NULL) /* Loop ran zero times. */ ++ (void) regnode(g, NOTHING); ++ ++ return(ret); ++} ++ ++/* ++ - regpiece - something followed by possible [*+?] ++ * ++ * Note that the branching code sequences used for ? and the general cases ++ * of * and + are somewhat optimized: they use the same NOTHING node as ++ * both the endmarker for their branch list and the body of the last branch. ++ * It might seem that this node could be dispensed with entirely, but the ++ * endmarker role is not redundant. ++ */ ++static char * ++regpiece(struct match_globals *g, int *flagp) ++{ ++ register char *ret; ++ register char op; ++ register char *next; ++ int flags; ++ ++ ret = regatom(g, &flags); ++ if (ret == NULL) ++ return(NULL); ++ ++ op = *g->regparse; ++ if (!ISMULT(op)) { ++ *flagp = flags; ++ return(ret); ++ } ++ ++ if (!(flags&HASWIDTH) && op != '?') ++ FAIL("*+ operand could be empty"); ++ *flagp = (op != '+') ? (WORST|SPSTART) : (WORST|HASWIDTH); ++ ++ if (op == '*' && (flags&SIMPLE)) ++ reginsert(g, STAR, ret); ++ else if (op == '*') { ++ /* Emit x* as (x&|), where & means "self". */ ++ reginsert(g, BRANCH, ret); /* Either x */ ++ regoptail(g, ret, regnode(g, BACK)); /* and loop */ ++ regoptail(g, ret, ret); /* back */ ++ regtail(g, ret, regnode(g, BRANCH)); /* or */ ++ regtail(g, ret, regnode(g, NOTHING)); /* null. */ ++ } else if (op == '+' && (flags&SIMPLE)) ++ reginsert(g, PLUS, ret); ++ else if (op == '+') { ++ /* Emit x+ as x(&|), where & means "self". */ ++ next = regnode(g, BRANCH); /* Either */ ++ regtail(g, ret, next); ++ regtail(g, regnode(g, BACK), ret); /* loop back */ ++ regtail(g, next, regnode(g, BRANCH)); /* or */ ++ regtail(g, ret, regnode(g, NOTHING)); /* null. */ ++ } else if (op == '?') { ++ /* Emit x? as (x|) */ ++ reginsert(g, BRANCH, ret); /* Either x */ ++ regtail(g, ret, regnode(g, BRANCH)); /* or */ ++ next = regnode(g, NOTHING); /* null. */ ++ regtail(g, ret, next); ++ regoptail(g, ret, next); ++ } ++ g->regparse++; ++ if (ISMULT(*g->regparse)) ++ FAIL("nested *?+"); ++ ++ return(ret); ++} ++ ++/* ++ - regatom - the lowest level ++ * ++ * Optimization: gobbles an entire sequence of ordinary characters so that ++ * it can turn them into a single node, which is smaller to store and ++ * faster to run. Backslashed characters are exceptions, each becoming a ++ * separate node; the code is simpler that way and it's not worth fixing. ++ */ ++static char * ++regatom(struct match_globals *g, int *flagp) ++{ ++ register char *ret; ++ int flags; ++ ++ *flagp = WORST; /* Tentatively. */ ++ ++ switch (*g->regparse++) { ++ case '^': ++ ret = regnode(g, BOL); ++ break; ++ case '$': ++ ret = regnode(g, EOL); ++ break; ++ case '.': ++ ret = regnode(g, ANY); ++ *flagp |= HASWIDTH|SIMPLE; ++ break; ++ case '[': { ++ register int class; ++ register int classend; ++ ++ if (*g->regparse == '^') { /* Complement of range. */ ++ ret = regnode(g, ANYBUT); ++ g->regparse++; ++ } else ++ ret = regnode(g, ANYOF); ++ if (*g->regparse == ']' || *g->regparse == '-') ++ regc(g, *g->regparse++); ++ while (*g->regparse != '\0' && *g->regparse != ']') { ++ if (*g->regparse == '-') { ++ g->regparse++; ++ if (*g->regparse == ']' || *g->regparse == '\0') ++ regc(g, '-'); ++ else { ++ class = UCHARAT(g->regparse-2)+1; ++ classend = UCHARAT(g->regparse); ++ if (class > classend+1) ++ FAIL("invalid [] range"); ++ for (; class <= classend; class++) ++ regc(g, class); ++ g->regparse++; ++ } ++ } else ++ regc(g, *g->regparse++); ++ } ++ regc(g, '\0'); ++ if (*g->regparse != ']') ++ FAIL("unmatched []"); ++ g->regparse++; ++ *flagp |= HASWIDTH|SIMPLE; ++ } ++ break; ++ case '(': ++ ret = reg(g, 1, &flags); ++ if (ret == NULL) ++ return(NULL); ++ *flagp |= flags&(HASWIDTH|SPSTART); ++ break; ++ case '\0': ++ case '|': ++ case ')': ++ FAIL("internal urp"); /* Supposed to be caught earlier. */ ++ break; ++ case '?': ++ case '+': ++ case '*': ++ FAIL("?+* follows nothing"); ++ break; ++ case '\\': ++ if (*g->regparse == '\0') ++ FAIL("trailing \\"); ++ ret = regnode(g, EXACTLY); ++ regc(g, *g->regparse++); ++ regc(g, '\0'); ++ *flagp |= HASWIDTH|SIMPLE; ++ break; ++ default: { ++ register int len; ++ register char ender; ++ ++ g->regparse--; ++ len = my_strcspn((const char *)g->regparse, (const char *)META); ++ if (len <= 0) ++ FAIL("internal disaster"); ++ ender = *(g->regparse+len); ++ if (len > 1 && ISMULT(ender)) ++ len--; /* Back off clear of ?+* operand. */ ++ *flagp |= HASWIDTH; ++ if (len == 1) ++ *flagp |= SIMPLE; ++ ret = regnode(g, EXACTLY); ++ while (len > 0) { ++ regc(g, *g->regparse++); ++ len--; ++ } ++ regc(g, '\0'); ++ } ++ break; ++ } ++ ++ return(ret); ++} ++ ++/* ++ - regnode - emit a node ++ */ ++static char * /* Location. */ ++regnode(struct match_globals *g, char op) ++{ ++ register char *ret; ++ register char *ptr; ++ ++ ret = g->regcode; ++ if (ret == &g->regdummy) { ++ g->regsize += 3; ++ return(ret); ++ } ++ ++ ptr = ret; ++ *ptr++ = op; ++ *ptr++ = '\0'; /* Null "next" pointer. */ ++ *ptr++ = '\0'; ++ g->regcode = ptr; ++ ++ return(ret); ++} ++ ++/* ++ - regc - emit (if appropriate) a byte of code ++ */ ++static void ++regc(struct match_globals *g, char b) ++{ ++ if (g->regcode != &g->regdummy) ++ *g->regcode++ = b; ++ else ++ g->regsize++; ++} ++ ++/* ++ - reginsert - insert an operator in front of already-emitted operand ++ * ++ * Means relocating the operand. ++ */ ++static void ++reginsert(struct match_globals *g, char op, char* opnd) ++{ ++ register char *src; ++ register char *dst; ++ register char *place; ++ ++ if (g->regcode == &g->regdummy) { ++ g->regsize += 3; ++ return; ++ } ++ ++ src = g->regcode; ++ g->regcode += 3; ++ dst = g->regcode; ++ while (src > opnd) ++ *--dst = *--src; ++ ++ place = opnd; /* Op node, where operand used to be. */ ++ *place++ = op; ++ *place++ = '\0'; ++ *place++ = '\0'; ++} ++ ++/* ++ - regtail - set the next-pointer at the end of a node chain ++ */ ++static void ++regtail(struct match_globals *g, char *p, char *val) ++{ ++ register char *scan; ++ register char *temp; ++ register int offset; ++ ++ if (p == &g->regdummy) ++ return; ++ ++ /* Find last node. */ ++ scan = p; ++ for (;;) { ++ temp = regnext(g, scan); ++ if (temp == NULL) ++ break; ++ scan = temp; ++ } ++ ++ if (OP(scan) == BACK) ++ offset = scan - val; ++ else ++ offset = val - scan; ++ *(scan+1) = (offset>>8)&0377; ++ *(scan+2) = offset&0377; ++} ++ ++/* ++ - regoptail - regtail on operand of first argument; nop if operandless ++ */ ++static void ++regoptail(struct match_globals *g, char *p, char *val) ++{ ++ /* "Operandless" and "op != BRANCH" are synonymous in practice. */ ++ if (p == NULL || p == &g->regdummy || OP(p) != BRANCH) ++ return; ++ regtail(g, OPERAND(p), val); ++} ++ ++/* ++ * regexec and friends ++ */ ++ ++ ++/* ++ * Forwards. ++ */ ++STATIC int regtry(struct match_globals *g, regexp *prog, char *string); ++STATIC int regmatch(struct match_globals *g, char *prog); ++STATIC int regrepeat(struct match_globals *g, char *p); ++ ++#ifdef DEBUG ++int regnarrate = 0; ++void regdump(); ++STATIC char *regprop(char *op); ++#endif ++ ++/* ++ - regexec - match a regexp against a string ++ */ ++int ++regexec(regexp *prog, char *string) ++{ ++ register char *s; ++ struct match_globals g; ++ ++ /* Be paranoid... */ ++ if (prog == NULL || string == NULL) { ++ printk("<3>Regexp: NULL parameter\n"); ++ return(0); ++ } ++ ++ /* Check validity of program. */ ++ if (UCHARAT(prog->program) != MAGIC) { ++ printk("<3>Regexp: corrupted program\n"); ++ return(0); ++ } ++ ++ /* If there is a "must appear" string, look for it. */ ++ if (prog->regmust != NULL) { ++ s = string; ++ while ((s = strchr(s, prog->regmust[0])) != NULL) { ++ if (strncmp(s, prog->regmust, prog->regmlen) == 0) ++ break; /* Found it. */ ++ s++; ++ } ++ if (s == NULL) /* Not present. */ ++ return(0); ++ } ++ ++ /* Mark beginning of line for ^ . */ ++ g.regbol = string; ++ ++ /* Simplest case: anchored match need be tried only once. */ ++ if (prog->reganch) ++ return(regtry(&g, prog, string)); ++ ++ /* Messy cases: unanchored match. */ ++ s = string; ++ if (prog->regstart != '\0') ++ /* We know what char it must start with. */ ++ while ((s = strchr(s, prog->regstart)) != NULL) { ++ if (regtry(&g, prog, s)) ++ return(1); ++ s++; ++ } ++ else ++ /* We don't -- general case. */ ++ do { ++ if (regtry(&g, prog, s)) ++ return(1); ++ } while (*s++ != '\0'); ++ ++ /* Failure. */ ++ return(0); ++} ++ ++/* ++ - regtry - try match at specific point ++ */ ++static int /* 0 failure, 1 success */ ++regtry(struct match_globals *g, regexp *prog, char *string) ++{ ++ register int i; ++ register char **sp; ++ register char **ep; ++ ++ g->reginput = string; ++ g->regstartp = prog->startp; ++ g->regendp = prog->endp; ++ ++ sp = prog->startp; ++ ep = prog->endp; ++ for (i = NSUBEXP; i > 0; i--) { ++ *sp++ = NULL; ++ *ep++ = NULL; ++ } ++ if (regmatch(g, prog->program + 1)) { ++ prog->startp[0] = string; ++ prog->endp[0] = g->reginput; ++ return(1); ++ } else ++ return(0); ++} ++ ++/* ++ - regmatch - main matching routine ++ * ++ * Conceptually the strategy is simple: check to see whether the current ++ * node matches, call self recursively to see whether the rest matches, ++ * and then act accordingly. In practice we make some effort to avoid ++ * recursion, in particular by going through "ordinary" nodes (that don't ++ * need to know whether the rest of the match failed) by a loop instead of ++ * by recursion. ++ */ ++static int /* 0 failure, 1 success */ ++regmatch(struct match_globals *g, char *prog) ++{ ++ register char *scan = prog; /* Current node. */ ++ char *next; /* Next node. */ ++ ++#ifdef DEBUG ++ if (scan != NULL && regnarrate) ++ fprintf(stderr, "%s(\n", regprop(scan)); ++#endif ++ while (scan != NULL) { ++#ifdef DEBUG ++ if (regnarrate) ++ fprintf(stderr, "%s...\n", regprop(scan)); ++#endif ++ next = regnext(g, scan); ++ ++ switch (OP(scan)) { ++ case BOL: ++ if (g->reginput != g->regbol) ++ return(0); ++ break; ++ case EOL: ++ if (*g->reginput != '\0') ++ return(0); ++ break; ++ case ANY: ++ if (*g->reginput == '\0') ++ return(0); ++ g->reginput++; ++ break; ++ case EXACTLY: { ++ register int len; ++ register char *opnd; ++ ++ opnd = OPERAND(scan); ++ /* Inline the first character, for speed. */ ++ if (*opnd != *g->reginput) ++ return(0); ++ len = strlen(opnd); ++ if (len > 1 && strncmp(opnd, g->reginput, len) != 0) ++ return(0); ++ g->reginput += len; ++ } ++ break; ++ case ANYOF: ++ if (*g->reginput == '\0' || strchr(OPERAND(scan), *g->reginput) == NULL) ++ return(0); ++ g->reginput++; ++ break; ++ case ANYBUT: ++ if (*g->reginput == '\0' || strchr(OPERAND(scan), *g->reginput) != NULL) ++ return(0); ++ g->reginput++; ++ break; ++ case NOTHING: ++ case BACK: ++ break; ++ case OPEN+1: ++ case OPEN+2: ++ case OPEN+3: ++ case OPEN+4: ++ case OPEN+5: ++ case OPEN+6: ++ case OPEN+7: ++ case OPEN+8: ++ case OPEN+9: { ++ register int no; ++ register char *save; ++ ++ no = OP(scan) - OPEN; ++ save = g->reginput; ++ ++ if (regmatch(g, next)) { ++ /* ++ * Don't set startp if some later ++ * invocation of the same parentheses ++ * already has. ++ */ ++ if (g->regstartp[no] == NULL) ++ g->regstartp[no] = save; ++ return(1); ++ } else ++ return(0); ++ } ++ break; ++ case CLOSE+1: ++ case CLOSE+2: ++ case CLOSE+3: ++ case CLOSE+4: ++ case CLOSE+5: ++ case CLOSE+6: ++ case CLOSE+7: ++ case CLOSE+8: ++ case CLOSE+9: ++ { ++ register int no; ++ register char *save; ++ ++ no = OP(scan) - CLOSE; ++ save = g->reginput; ++ ++ if (regmatch(g, next)) { ++ /* ++ * Don't set endp if some later ++ * invocation of the same parentheses ++ * already has. ++ */ ++ if (g->regendp[no] == NULL) ++ g->regendp[no] = save; ++ return(1); ++ } else ++ return(0); ++ } ++ break; ++ case BRANCH: { ++ register char *save; ++ ++ if (OP(next) != BRANCH) /* No choice. */ ++ next = OPERAND(scan); /* Avoid recursion. */ ++ else { ++ do { ++ save = g->reginput; ++ if (regmatch(g, OPERAND(scan))) ++ return(1); ++ g->reginput = save; ++ scan = regnext(g, scan); ++ } while (scan != NULL && OP(scan) == BRANCH); ++ return(0); ++ /* NOTREACHED */ ++ } ++ } ++ break; ++ case STAR: ++ case PLUS: { ++ register char nextch; ++ register int no; ++ register char *save; ++ register int min; ++ ++ /* ++ * Lookahead to avoid useless match attempts ++ * when we know what character comes next. ++ */ ++ nextch = '\0'; ++ if (OP(next) == EXACTLY) ++ nextch = *OPERAND(next); ++ min = (OP(scan) == STAR) ? 0 : 1; ++ save = g->reginput; ++ no = regrepeat(g, OPERAND(scan)); ++ while (no >= min) { ++ /* If it could work, try it. */ ++ if (nextch == '\0' || *g->reginput == nextch) ++ if (regmatch(g, next)) ++ return(1); ++ /* Couldn't or didn't -- back up. */ ++ no--; ++ g->reginput = save + no; ++ } ++ return(0); ++ } ++ break; ++ case END: ++ return(1); /* Success! */ ++ break; ++ default: ++ printk("<3>Regexp: memory corruption\n"); ++ return(0); ++ break; ++ } ++ ++ scan = next; ++ } ++ ++ /* ++ * We get here only if there's trouble -- normally "case END" is ++ * the terminating point. ++ */ ++ printk("<3>Regexp: corrupted pointers\n"); ++ return(0); ++} ++ ++/* ++ - regrepeat - repeatedly match something simple, report how many ++ */ ++static int ++regrepeat(struct match_globals *g, char *p) ++{ ++ register int count = 0; ++ register char *scan; ++ register char *opnd; ++ ++ scan = g->reginput; ++ opnd = OPERAND(p); ++ switch (OP(p)) { ++ case ANY: ++ count = strlen(scan); ++ scan += count; ++ break; ++ case EXACTLY: ++ while (*opnd == *scan) { ++ count++; ++ scan++; ++ } ++ break; ++ case ANYOF: ++ while (*scan != '\0' && strchr(opnd, *scan) != NULL) { ++ count++; ++ scan++; ++ } ++ break; ++ case ANYBUT: ++ while (*scan != '\0' && strchr(opnd, *scan) == NULL) { ++ count++; ++ scan++; ++ } ++ break; ++ default: /* Oh dear. Called inappropriately. */ ++ printk("<3>Regexp: internal foulup\n"); ++ count = 0; /* Best compromise. */ ++ break; ++ } ++ g->reginput = scan; ++ ++ return(count); ++} ++ ++/* ++ - regnext - dig the "next" pointer out of a node ++ */ ++static char* ++regnext(struct match_globals *g, char *p) ++{ ++ register int offset; ++ ++ if (p == &g->regdummy) ++ return(NULL); ++ ++ offset = NEXT(p); ++ if (offset == 0) ++ return(NULL); ++ ++ if (OP(p) == BACK) ++ return(p-offset); ++ else ++ return(p+offset); ++} ++ ++#ifdef DEBUG ++ ++STATIC char *regprop(); ++ ++/* ++ - regdump - dump a regexp onto stdout in vaguely comprehensible form ++ */ ++void ++regdump(regexp *r) ++{ ++ register char *s; ++ register char op = EXACTLY; /* Arbitrary non-END op. */ ++ register char *next; ++ /* extern char *strchr(); */ ++ ++ ++ s = r->program + 1; ++ while (op != END) { /* While that wasn't END last time... */ ++ op = OP(s); ++ printf("%2d%s", s-r->program, regprop(s)); /* Where, what. */ ++ next = regnext(s); ++ if (next == NULL) /* Next ptr. */ ++ printf("(0)"); ++ else ++ printf("(%d)", (s-r->program)+(next-s)); ++ s += 3; ++ if (op == ANYOF || op == ANYBUT || op == EXACTLY) { ++ /* Literal string, where present. */ ++ while (*s != '\0') { ++ putchar(*s); ++ s++; ++ } ++ s++; ++ } ++ putchar('\n'); ++ } ++ ++ /* Header fields of interest. */ ++ if (r->regstart != '\0') ++ printf("start `%c' ", r->regstart); ++ if (r->reganch) ++ printf("anchored "); ++ if (r->regmust != NULL) ++ printf("must have \"%s\"", r->regmust); ++ printf("\n"); ++} ++ ++/* ++ - regprop - printable representation of opcode ++ */ ++static char * ++regprop(char *op) ++{ ++#define BUFLEN 50 ++ register char *p; ++ static char buf[BUFLEN]; ++ ++ strcpy(buf, ":"); ++ ++ switch (OP(op)) { ++ case BOL: ++ p = "BOL"; ++ break; ++ case EOL: ++ p = "EOL"; ++ break; ++ case ANY: ++ p = "ANY"; ++ break; ++ case ANYOF: ++ p = "ANYOF"; ++ break; ++ case ANYBUT: ++ p = "ANYBUT"; ++ break; ++ case BRANCH: ++ p = "BRANCH"; ++ break; ++ case EXACTLY: ++ p = "EXACTLY"; ++ break; ++ case NOTHING: ++ p = "NOTHING"; ++ break; ++ case BACK: ++ p = "BACK"; ++ break; ++ case END: ++ p = "END"; ++ break; ++ case OPEN+1: ++ case OPEN+2: ++ case OPEN+3: ++ case OPEN+4: ++ case OPEN+5: ++ case OPEN+6: ++ case OPEN+7: ++ case OPEN+8: ++ case OPEN+9: ++ snprintf(buf+strlen(buf),BUFLEN-strlen(buf), "OPEN%d", OP(op)-OPEN); ++ p = NULL; ++ break; ++ case CLOSE+1: ++ case CLOSE+2: ++ case CLOSE+3: ++ case CLOSE+4: ++ case CLOSE+5: ++ case CLOSE+6: ++ case CLOSE+7: ++ case CLOSE+8: ++ case CLOSE+9: ++ snprintf(buf+strlen(buf),BUFLEN-strlen(buf), "CLOSE%d", OP(op)-CLOSE); ++ p = NULL; ++ break; ++ case STAR: ++ p = "STAR"; ++ break; ++ case PLUS: ++ p = "PLUS"; ++ break; ++ default: ++ printk("<3>Regexp: corrupted opcode\n"); ++ break; ++ } ++ if (p != NULL) ++ strncat(buf, p, BUFLEN-strlen(buf)); ++ return(buf); ++} ++#endif ++ ++ +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regexp.h linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regexp.h +--- linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regexp.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regexp.h 2007-05-26 20:13:52.652129512 +0200 +@@ -0,0 +1,41 @@ ++/* ++ * Definitions etc. for regexp(3) routines. ++ * ++ * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof], ++ * not the System V one. ++ */ ++ ++#ifndef REGEXP_H ++#define REGEXP_H ++ ++ ++/* ++http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h , ++which contains a version of this library, says: ++ ++ * ++ * NSUBEXP must be at least 10, and no greater than 117 or the parser ++ * will not work properly. ++ * ++ ++However, it looks rather like this library is limited to 10. If you think ++otherwise, let us know. ++*/ ++ ++#define NSUBEXP 10 ++typedef struct regexp { ++ char *startp[NSUBEXP]; ++ char *endp[NSUBEXP]; ++ char regstart; /* Internal use only. */ ++ char reganch; /* Internal use only. */ ++ char *regmust; /* Internal use only. */ ++ int regmlen; /* Internal use only. */ ++ char program[1]; /* Unwarranted chumminess with compiler. */ ++} regexp; ++ ++regexp * regcomp(char *exp, int *patternsize); ++int regexec(regexp *prog, char *string); ++void regsub(regexp *prog, char *source, char *dest); ++void regerror(char *s); ++ ++#endif +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regmagic.h linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regmagic.h +--- linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regmagic.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regmagic.h 2007-05-26 20:13:52.652129512 +0200 +@@ -0,0 +1,5 @@ ++/* ++ * The first byte of the regexp internal "program" is actually this magic ++ * number; the start node begins in the second byte. ++ */ ++#define MAGIC 0234 +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regsub.c linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regsub.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/regexp/regsub.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/regexp/regsub.c 2007-05-26 20:13:52.653129360 +0200 +@@ -0,0 +1,95 @@ ++/* ++ * regsub ++ * @(#)regsub.c 1.3 of 2 April 86 ++ * ++ * Copyright (c) 1986 by University of Toronto. ++ * Written by Henry Spencer. Not derived from licensed software. ++ * ++ * Permission is granted to anyone to use this software for any ++ * purpose on any computer system, and to redistribute it freely, ++ * subject to the following restrictions: ++ * ++ * 1. The author is not responsible for the consequences of use of ++ * this software, no matter how awful, even if they arise ++ * from defects in it. ++ * ++ * 2. The origin of this software must not be misrepresented, either ++ * by explicit claim or by omission. ++ * ++ * 3. Altered versions must be plainly marked as such, and must not ++ * be misrepresented as being the original software. ++ * ++ * ++ * This code was modified by Ethan Sommer to work within the kernel ++ * (it now uses kmalloc etc..) ++ * ++ */ ++#include "regexp.h" ++#include "regmagic.h" ++#include <linux/string.h> ++ ++ ++#ifndef CHARBITS ++#define UCHARAT(p) ((int)*(unsigned char *)(p)) ++#else ++#define UCHARAT(p) ((int)*(p)&CHARBITS) ++#endif ++ ++#if 0 ++//void regerror(char * s) ++//{ ++// printk("regexp(3): %s", s); ++// /* NOTREACHED */ ++//} ++#endif ++ ++/* ++ - regsub - perform substitutions after a regexp match ++ */ ++void ++regsub(regexp * prog, char * source, char * dest) ++{ ++ register char *src; ++ register char *dst; ++ register char c; ++ register int no; ++ register int len; ++ ++ /* Not necessary and gcc doesn't like it -MLS */ ++ /*extern char *strncpy();*/ ++ ++ if (prog == NULL || source == NULL || dest == NULL) { ++ regerror("NULL parm to regsub"); ++ return; ++ } ++ if (UCHARAT(prog->program) != MAGIC) { ++ regerror("damaged regexp fed to regsub"); ++ return; ++ } ++ ++ src = source; ++ dst = dest; ++ while ((c = *src++) != '\0') { ++ if (c == '&') ++ no = 0; ++ else if (c == '\\' && '0' <= *src && *src <= '9') ++ no = *src++ - '0'; ++ else ++ no = -1; ++ ++ if (no < 0) { /* Ordinary character. */ ++ if (c == '\\' && (*src == '\\' || *src == '&')) ++ c = *src++; ++ *dst++ = c; ++ } else if (prog->startp[no] != NULL && prog->endp[no] != NULL) { ++ len = prog->endp[no] - prog->startp[no]; ++ (void) strncpy(dst, prog->startp[no], len); ++ dst += len; ++ if (len != 0 && *(dst-1) == '\0') { /* strncpy hit NUL. */ ++ regerror("damaged match string"); ++ return; ++ } ++ } ++ } ++ *dst++ = '\0'; ++} diff --git a/target/linux/generic-2.6/patches-2.6.22/101-netfilter_layer7_pktmatch.patch b/target/linux/generic-2.6/patches-2.6.22/101-netfilter_layer7_pktmatch.patch new file mode 100644 index 0000000000..2d7f058cab --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/101-netfilter_layer7_pktmatch.patch @@ -0,0 +1,108 @@ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_layer7.h linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_layer7.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_layer7.h 2007-05-26 20:17:47.624408296 +0200 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_layer7.h 2007-05-26 20:17:48.729240336 +0200 +@@ -21,6 +21,7 @@ + char protocol[MAX_PROTOCOL_LEN]; + char invert:1; + char pattern[MAX_PATTERN_LEN]; ++ char pkt; + }; + + #endif /* _IPT_LAYER7_H */ +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/ipt_layer7.c linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_layer7.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/ipt_layer7.c 2007-05-26 20:17:47.626407992 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_layer7.c 2007-05-26 20:17:48.729240336 +0200 +@@ -296,33 +296,34 @@ + } + } + +-/* add the new app data to the conntrack. Return number of bytes added. */ +-static int add_data(struct ip_conntrack * master_conntrack, +- char * app_data, int appdatalen) ++static int add_datastr(char *target, int offset, char *app_data, int len) + { + int length = 0, i; +- int oldlength = master_conntrack->layer7.app_data_len; +- +- // This is a fix for a race condition by Deti Fliegl. However, I'm not +- // clear on whether the race condition exists or whether this really +- // fixes it. I might just be being dense... Anyway, if it's not really +- // a fix, all it does is waste a very small amount of time. +- if(!master_conntrack->layer7.app_data) return 0; ++ if(!target) return 0; + + /* Strip nulls. Make everything lower case (our regex lib doesn't + do case insensitivity). Add it to the end of the current data. */ +- for(i = 0; i < maxdatalen-oldlength-1 && +- i < appdatalen; i++) { ++ for(i = 0; i < maxdatalen-offset-1 && i < len; i++) { + if(app_data[i] != '\0') { +- master_conntrack->layer7.app_data[length+oldlength] = ++ target[length+offset] = + /* the kernel version of tolower mungs 'upper ascii' */ + isascii(app_data[i])? tolower(app_data[i]) : app_data[i]; + length++; + } + } ++ target[length+offset] = '\0'; + +- master_conntrack->layer7.app_data[length+oldlength] = '\0'; +- master_conntrack->layer7.app_data_len = length + oldlength; ++ return length; ++} ++ ++/* add the new app data to the conntrack. Return number of bytes added. */ ++static int add_data(struct ip_conntrack * master_conntrack, ++ char * app_data, int appdatalen) ++{ ++ int length; ++ ++ length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen); ++ master_conntrack->layer7.app_data_len += length; + + return length; + } +@@ -339,7 +340,7 @@ + struct ipt_layer7_info * info = (struct ipt_layer7_info *)matchinfo; + enum ip_conntrack_info master_ctinfo, ctinfo; + struct ip_conntrack *master_conntrack, *conntrack; +- unsigned char * app_data; ++ unsigned char *app_data, *tmp_data; + unsigned int pattern_result, appdatalen; + regexp * comppattern; + +@@ -362,8 +363,8 @@ + master_conntrack = master_ct(master_conntrack); + + /* if we've classified it or seen too many packets */ +- if(TOTAL_PACKETS > num_packets || +- master_conntrack->layer7.app_proto) { ++ if(!info->pkt && (TOTAL_PACKETS > num_packets || ++ master_conntrack->layer7.app_proto)) { + + pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info); + +@@ -394,6 +395,23 @@ + comppattern = compile_and_cache(info->pattern, info->protocol); + spin_unlock_bh(&list_lock); + ++ if (info->pkt) { ++ tmp_data = kmalloc(maxdatalen, GFP_ATOMIC); ++ if(!tmp_data){ ++ if (net_ratelimit()) ++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n"); ++ return info->invert; ++ } ++ ++ tmp_data[0] = '\0'; ++ add_datastr(tmp_data, 0, app_data, appdatalen); ++ pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0); ++ kfree(tmp_data); ++ tmp_data = NULL; ++ ++ return (pattern_result ^ info->invert); ++ } ++ + /* On the first packet of a connection, allocate space for app data */ + write_lock(&ct_lock); + if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) { diff --git a/target/linux/generic-2.6/patches-2.6.22/110-ipp2p_0.8.1rc1.patch b/target/linux/generic-2.6/patches-2.6.22/110-ipp2p_0.8.1rc1.patch new file mode 100644 index 0000000000..9ff9e23606 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/110-ipp2p_0.8.1rc1.patch @@ -0,0 +1,948 @@ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_ipp2p.h linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_ipp2p.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_ipp2p.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_ipp2p.h 2007-05-26 20:21:54.586864296 +0200 +@@ -0,0 +1,31 @@ ++#ifndef __IPT_IPP2P_H ++#define __IPT_IPP2P_H ++#define IPP2P_VERSION "0.8.1_rc1" ++ ++struct ipt_p2p_info { ++ int cmd; ++ int debug; ++}; ++ ++#endif //__IPT_IPP2P_H ++ ++#define SHORT_HAND_IPP2P 1 /* --ipp2p switch*/ ++//#define SHORT_HAND_DATA 4 /* --ipp2p-data switch*/ ++#define SHORT_HAND_NONE 5 /* no short hand*/ ++ ++#define IPP2P_EDK (1 << 1) ++#define IPP2P_DATA_KAZAA (1 << 2) ++#define IPP2P_DATA_EDK (1 << 3) ++#define IPP2P_DATA_DC (1 << 4) ++#define IPP2P_DC (1 << 5) ++#define IPP2P_DATA_GNU (1 << 6) ++#define IPP2P_GNU (1 << 7) ++#define IPP2P_KAZAA (1 << 8) ++#define IPP2P_BIT (1 << 9) ++#define IPP2P_APPLE (1 << 10) ++#define IPP2P_SOUL (1 << 11) ++#define IPP2P_WINMX (1 << 12) ++#define IPP2P_ARES (1 << 13) ++#define IPP2P_MUTE (1 << 14) ++#define IPP2P_WASTE (1 << 15) ++#define IPP2P_XDCC (1 << 16) +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/ipt_ipp2p.c linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_ipp2p.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/ipt_ipp2p.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_ipp2p.c 2007-05-26 20:21:54.587864144 +0200 +@@ -0,0 +1,881 @@ ++#if defined(MODVERSIONS) ++#include <linux/modversions.h> ++#endif ++#include <linux/module.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/version.h> ++#include <linux/netfilter_ipv4/ipt_ipp2p.h> ++#include <net/tcp.h> ++#include <net/udp.h> ++ ++#define get_u8(X,O) (*(__u8 *)(X + O)) ++#define get_u16(X,O) (*(__u16 *)(X + O)) ++#define get_u32(X,O) (*(__u32 *)(X + O)) ++ ++MODULE_AUTHOR("Eicke Friedrich/Klaus Degner <ipp2p@ipp2p.org>"); ++MODULE_DESCRIPTION("An extension to iptables to identify P2P traffic."); ++MODULE_LICENSE("GPL"); ++ ++ ++/*Search for UDP eDonkey/eMule/Kad commands*/ ++int ++udp_search_edk (unsigned char *haystack, int packet_len) ++{ ++ unsigned char *t = haystack; ++ t += 8; ++ ++ switch (t[0]) { ++ case 0xe3: ++ { /*edonkey*/ ++ switch (t[1]) ++ { ++ /* client -> server status request */ ++ case 0x96: ++ if (packet_len == 14) return ((IPP2P_EDK * 100) + 50); ++ break; ++ /* server -> client status request */ ++ case 0x97: if (packet_len == 42) return ((IPP2P_EDK * 100) + 51); ++ break; ++ /* server description request */ ++ /* e3 2a ff f0 .. | size == 6 */ ++ case 0xa2: if ( (packet_len == 14) && ( get_u16(t,2) == __constant_htons(0xfff0) ) ) return ((IPP2P_EDK * 100) + 52); ++ break; ++ /* server description response */ ++ /* e3 a3 ff f0 .. | size > 40 && size < 200 */ ++ //case 0xa3: return ((IPP2P_EDK * 100) + 53); ++ // break; ++ case 0x9a: if (packet_len==26) return ((IPP2P_EDK * 100) + 54); ++ break; ++ ++ case 0x92: if (packet_len==18) return ((IPP2P_EDK * 100) + 55); ++ break; ++ } ++ break; ++ } ++ case 0xe4: ++ { ++ switch (t[1]) ++ { ++ /* e4 20 .. | size == 43 */ ++ case 0x20: if ((packet_len == 43) && (t[2] != 0x00) && (t[34] != 0x00)) return ((IPP2P_EDK * 100) + 60); ++ break; ++ /* e4 00 .. 00 | size == 35 ? */ ++ case 0x00: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 61); ++ break; ++ /* e4 10 .. 00 | size == 35 ? */ ++ case 0x10: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 62); ++ break; ++ /* e4 18 .. 00 | size == 35 ? */ ++ case 0x18: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 63); ++ break; ++ /* e4 52 .. | size = 44 */ ++ case 0x52: if (packet_len == 44 ) return ((IPP2P_EDK * 100) + 64); ++ break; ++ /* e4 58 .. | size == 6 */ ++ case 0x58: if (packet_len == 14 ) return ((IPP2P_EDK * 100) + 65); ++ break; ++ /* e4 59 .. | size == 2 */ ++ case 0x59: if (packet_len == 10 )return ((IPP2P_EDK * 100) + 66); ++ break; ++ /* e4 28 .. | packet_len == 52,77,102,127... */ ++ case 0x28: if (((packet_len-52) % 25) == 0) return ((IPP2P_EDK * 100) + 67); ++ break; ++ /* e4 50 xx xx | size == 4 */ ++ case 0x50: if (packet_len == 12) return ((IPP2P_EDK * 100) + 68); ++ break; ++ /* e4 40 xx xx | size == 48 */ ++ case 0x40: if (packet_len == 56) return ((IPP2P_EDK * 100) + 69); ++ break; ++ } ++ break; ++ } ++ } /* end of switch (t[0]) */ ++ return 0; ++}/*udp_search_edk*/ ++ ++ ++/*Search for UDP Gnutella commands*/ ++int ++udp_search_gnu (unsigned char *haystack, int packet_len) ++{ ++ unsigned char *t = haystack; ++ t += 8; ++ ++ if (memcmp(t, "GND", 3) == 0) return ((IPP2P_GNU * 100) + 51); ++ if (memcmp(t, "GNUTELLA ", 9) == 0) return ((IPP2P_GNU * 100) + 52); ++ return 0; ++}/*udp_search_gnu*/ ++ ++ ++/*Search for UDP KaZaA commands*/ ++int ++udp_search_kazaa (unsigned char *haystack, int packet_len) ++{ ++ unsigned char *t = haystack; ++ ++ if (t[packet_len-1] == 0x00){ ++ t += (packet_len - 6); ++ if (memcmp(t, "KaZaA", 5) == 0) return (IPP2P_KAZAA * 100 +50); ++ } ++ ++ return 0; ++}/*udp_search_kazaa*/ ++ ++/*Search for UDP DirectConnect commands*/ ++int ++udp_search_directconnect (unsigned char *haystack, int packet_len) ++{ ++ unsigned char *t = haystack; ++ if ((*(t + 8) == 0x24) && (*(t + packet_len - 1) == 0x7c)) { ++ t+=8; ++ if (memcmp(t, "SR ", 3) == 0) return ((IPP2P_DC * 100) + 60); ++ if (memcmp(t, "Ping ", 5) == 0) return ((IPP2P_DC * 100) + 61); ++ } ++ return 0; ++}/*udp_search_directconnect*/ ++ ++ ++ ++/*Search for UDP BitTorrent commands*/ ++int ++udp_search_bit (unsigned char *haystack, int packet_len) ++{ ++ switch(packet_len) ++ { ++ case 24: ++ /* ^ 00 00 04 17 27 10 19 80 */ ++ if ((ntohl(get_u32(haystack, 8)) == 0x00000417) && (ntohl(get_u32(haystack, 12)) == 0x27101980)) ++ return (IPP2P_BIT * 100 + 50); ++ break; ++ case 44: ++ if (get_u32(haystack, 16) == __constant_htonl(0x00000400) && get_u32(haystack, 36) == __constant_htonl(0x00000104)) ++ return (IPP2P_BIT * 100 + 51); ++ if (get_u32(haystack, 16) == __constant_htonl(0x00000400)) ++ return (IPP2P_BIT * 100 + 61); ++ break; ++ case 65: ++ if (get_u32(haystack, 16) == __constant_htonl(0x00000404) && get_u32(haystack, 36) == __constant_htonl(0x00000104)) ++ return (IPP2P_BIT * 100 + 52); ++ if (get_u32(haystack, 16) == __constant_htonl(0x00000404)) ++ return (IPP2P_BIT * 100 + 62); ++ break; ++ case 67: ++ if (get_u32(haystack, 16) == __constant_htonl(0x00000406) && get_u32(haystack, 36) == __constant_htonl(0x00000104)) ++ return (IPP2P_BIT * 100 + 53); ++ if (get_u32(haystack, 16) == __constant_htonl(0x00000406)) ++ return (IPP2P_BIT * 100 + 63); ++ break; ++ case 211: ++ if (get_u32(haystack, 8) == __constant_htonl(0x00000405)) ++ return (IPP2P_BIT * 100 + 54); ++ break; ++ case 29: ++ if ((get_u32(haystack, 8) == __constant_htonl(0x00000401))) ++ return (IPP2P_BIT * 100 + 55); ++ break; ++ case 52: ++ if (get_u32(haystack,8) == __constant_htonl(0x00000827) && ++ get_u32(haystack,12) == __constant_htonl(0x37502950)) ++ return (IPP2P_BIT * 100 + 80); ++ break; ++ default: ++ /* this packet does not have a constant size */ ++ if (packet_len >= 40 && get_u32(haystack, 16) == __constant_htonl(0x00000402) && get_u32(haystack, 36) == __constant_htonl(0x00000104)) ++ return (IPP2P_BIT * 100 + 56); ++ break; ++ } ++ ++ /* some extra-bitcomet rules: ++ * "d1:" [a|r] "d2:id20:" ++ */ ++ if (packet_len > 30 && get_u8(haystack, 8) == 'd' && get_u8(haystack, 9) == '1' && get_u8(haystack, 10) == ':' ) ++ { ++ if (get_u8(haystack, 11) == 'a' || get_u8(haystack, 11) == 'r') ++ { ++ if (memcmp(haystack+12,"d2:id20:",8)==0) ++ return (IPP2P_BIT * 100 + 57); ++ } ++ } ++ ++#if 0 ++ /* bitlord rules */ ++ /* packetlen must be bigger than 40 */ ++ /* first 4 bytes are zero */ ++ if (packet_len > 40 && get_u32(haystack, 8) == 0x00000000) ++ { ++ /* first rule: 00 00 00 00 01 00 00 xx xx xx xx 00 00 00 00*/ ++ if (get_u32(haystack, 12) == 0x00000000 && ++ get_u32(haystack, 16) == 0x00010000 && ++ get_u32(haystack, 24) == 0x00000000 ) ++ return (IPP2P_BIT * 100 + 71); ++ ++ /* 00 01 00 00 0d 00 00 xx xx xx xx 00 00 00 00*/ ++ if (get_u32(haystack, 12) == 0x00000001 && ++ get_u32(haystack, 16) == 0x000d0000 && ++ get_u32(haystack, 24) == 0x00000000 ) ++ return (IPP2P_BIT * 100 + 71); ++ ++ ++ } ++#endif ++ ++ return 0; ++}/*udp_search_bit*/ ++ ++ ++ ++/*Search for Ares commands*/ ++//#define IPP2P_DEBUG_ARES ++int ++search_ares (const unsigned char *payload, const u16 plen) ++//int search_ares (unsigned char *haystack, int packet_len, int head_len) ++{ ++// const unsigned char *t = haystack + head_len; ++ ++ /* all ares packets start with */ ++ if (payload[1] == 0 && (plen - payload[0]) == 3) ++ { ++ switch (payload[2]) ++ { ++ case 0x5a: ++ /* ares connect */ ++ if ( plen == 6 && payload[5] == 0x05 ) return ((IPP2P_ARES * 100) + 1); ++ break; ++ case 0x09: ++ /* ares search, min 3 chars --> 14 bytes ++ * lets define a search can be up to 30 chars --> max 34 bytes ++ */ ++ if ( plen >= 14 && plen <= 34 ) return ((IPP2P_ARES * 100) + 1); ++ break; ++#ifdef IPP2P_DEBUG_ARES ++ default: ++ printk(KERN_DEBUG "Unknown Ares command %x recognized, len: %u \n", (unsigned int) payload[2],plen); ++#endif /* IPP2P_DEBUG_ARES */ ++ } ++ } ++ ++#if 0 ++ /* found connect packet: 03 00 5a 04 03 05 */ ++ /* new version ares 1.8: 03 00 5a xx xx 05 */ ++ if ((plen) == 6){ /* possible connect command*/ ++ if ((payload[0] == 0x03) && (payload[1] == 0x00) && (payload[2] == 0x5a) && (payload[5] == 0x05)) ++ return ((IPP2P_ARES * 100) + 1); ++ } ++ if ((plen) == 60){ /* possible download command*/ ++ if ((payload[59] == 0x0a) && (payload[58] == 0x0a)){ ++ if (memcmp(t, "PUSH SHA1:", 10) == 0) /* found download command */ ++ return ((IPP2P_ARES * 100) + 2); ++ } ++ } ++#endif ++ ++ return 0; ++} /*search_ares*/ ++ ++/*Search for SoulSeek commands*/ ++int ++search_soul (const unsigned char *payload, const u16 plen) ++{ ++//#define IPP2P_DEBUG_SOUL ++ /* match: xx xx xx xx | xx = sizeof(payload) - 4 */ ++ if (get_u32(payload, 0) == (plen - 4)){ ++ const __u32 m=get_u32(payload, 4); ++ /* match 00 yy yy 00, yy can be everything */ ++ if ( get_u8(payload, 4) == 0x00 && get_u8(payload, 7) == 0x00 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "0: Soulseek command 0x%x recognized\n",get_u32(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 1); ++ } ++ ++ /* next match: 01 yy 00 00 | yy can be everything */ ++ if ( get_u8(payload, 4) == 0x01 && get_u16(payload, 6) == 0x0000 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "1: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 2); ++ } ++ ++ /* other soulseek commandos are: 1-5,7,9,13-18,22,23,26,28,35-37,40-46,50,51,60,62-69,91,92,1001 */ ++ /* try to do this in an intelligent way */ ++ /* get all small commandos */ ++ switch(m) ++ { ++ case 7: ++ case 9: ++ case 22: ++ case 23: ++ case 26: ++ case 28: ++ case 50: ++ case 51: ++ case 60: ++ case 91: ++ case 92: ++ case 1001: ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "2: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 3); ++ } ++ ++ if (m > 0 && m < 6 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "3: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 4); ++ } ++ if (m > 12 && m < 19 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "4: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 5); ++ } ++ ++ if (m > 34 && m < 38 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "5: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 6); ++ } ++ ++ if (m > 39 && m < 47 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "6: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 7); ++ } ++ ++ if (m > 61 && m < 70 ) ++ { ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "7: Soulseek command 0x%x recognized\n",get_u16(payload, 4)); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 8); ++ } ++ ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "unknown SOULSEEK command: 0x%x, first 16 bit: 0x%x, first 8 bit: 0x%x ,soulseek ???\n",get_u32(payload, 4),get_u16(payload, 4) >> 16,get_u8(payload, 4) >> 24); ++#endif /* IPP2P_DEBUG_SOUL */ ++ } ++ ++ /* match 14 00 00 00 01 yy 00 00 00 STRING(YY) 01 00 00 00 00 46|50 00 00 00 00 */ ++ /* without size at the beginning !!! */ ++ if ( get_u32(payload, 0) == 0x14 && get_u8(payload, 4) == 0x01 ) ++ { ++ __u32 y=get_u32(payload, 5); ++ /* we need 19 chars + string */ ++ if ( (y + 19) <= (plen) ) ++ { ++ const unsigned char *w=payload+9+y; ++ if (get_u32(w, 0) == 0x01 && ( get_u16(w, 4) == 0x4600 || get_u16(w, 4) == 0x5000) && get_u32(w, 6) == 0x00); ++#ifdef IPP2P_DEBUG_SOUL ++ printk(KERN_DEBUG "Soulssek special client command recognized\n"); ++#endif /* IPP2P_DEBUG_SOUL */ ++ return ((IPP2P_SOUL * 100) + 9); ++ } ++ } ++ return 0; ++} ++ ++ ++/*Search for WinMX commands*/ ++int ++search_winmx (const unsigned char *payload, const u16 plen) ++{ ++//#define IPP2P_DEBUG_WINMX ++ if (((plen) == 4) && (memcmp(payload, "SEND", 4) == 0)) return ((IPP2P_WINMX * 100) + 1); ++ if (((plen) == 3) && (memcmp(payload, "GET", 3) == 0)) return ((IPP2P_WINMX * 100) + 2); ++ //if (packet_len < (head_len + 10)) return 0; ++ if (plen < 10) return 0; ++ ++ if ((memcmp(payload, "SEND", 4) == 0) || (memcmp(payload, "GET", 3) == 0)){ ++ u16 c=4; ++ const u16 end=plen-2; ++ u8 count=0; ++ while (c < end) ++ { ++ if (payload[c]== 0x20 && payload[c+1] == 0x22) ++ { ++ c++; ++ count++; ++ if (count>=2) return ((IPP2P_WINMX * 100) + 3); ++ } ++ c++; ++ } ++ } ++ ++ if ( plen == 149 && payload[0] == '8' ) ++ { ++#ifdef IPP2P_DEBUG_WINMX ++ printk(KERN_INFO "maybe WinMX\n"); ++#endif ++ if (get_u32(payload,17) == 0 && get_u32(payload,21) == 0 && get_u32(payload,25) == 0 && ++// get_u32(payload,33) == __constant_htonl(0x71182b1a) && get_u32(payload,37) == __constant_htonl(0x05050000) && ++// get_u32(payload,133) == __constant_htonl(0x31097edf) && get_u32(payload,145) == __constant_htonl(0xdcb8f792)) ++ get_u16(payload,39) == 0 && get_u16(payload,135) == __constant_htons(0x7edf) && get_u16(payload,147) == __constant_htons(0xf792)) ++ ++ { ++#ifdef IPP2P_DEBUG_WINMX ++ printk(KERN_INFO "got WinMX\n"); ++#endif ++ return ((IPP2P_WINMX * 100) + 4); ++ } ++ } ++ return 0; ++} /*search_winmx*/ ++ ++ ++/*Search for appleJuice commands*/ ++int ++search_apple (const unsigned char *payload, const u16 plen) ++{ ++ if ( (plen > 7) && (payload[6] == 0x0d) && (payload[7] == 0x0a) && (memcmp(payload, "ajprot", 6) == 0)) return (IPP2P_APPLE * 100); ++ ++ return 0; ++} ++ ++ ++/*Search for BitTorrent commands*/ ++int ++search_bittorrent (const unsigned char *payload, const u16 plen) ++{ ++ if (plen > 20) ++ { ++ /* test for match 0x13+"BitTorrent protocol" */ ++ if (payload[0] == 0x13) ++ { ++ if (memcmp(payload+1, "BitTorrent protocol", 19) == 0) return (IPP2P_BIT * 100); ++ } ++ ++ /* get tracker commandos, all starts with GET / ++ * then it can follow: scrape| announce ++ * and then ?hash_info= ++ */ ++ if (memcmp(payload,"GET /",5) == 0) ++ { ++ /* message scrape */ ++ if ( memcmp(payload+5,"scrape?info_hash=",17)==0 ) return (IPP2P_BIT * 100 + 1); ++ /* message announce */ ++ if ( memcmp(payload+5,"announce?info_hash=",19)==0 ) return (IPP2P_BIT * 100 + 2); ++ } ++ } ++ else ++ { ++ /* bitcomet encryptes the first packet, so we have to detect another ++ * one later in the flow */ ++ /* first try failed, too many missdetections */ ++ //if ( size == 5 && get_u32(t,0) == __constant_htonl(1) && t[4] < 3) return (IPP2P_BIT * 100 + 3); ++ ++ /* second try: block request packets */ ++ if ( plen == 17 && get_u32(payload,0) == __constant_htonl(0x0d) && payload[4] == 0x06 && get_u32(payload,13) == __constant_htonl(0x4000) ) return (IPP2P_BIT * 100 + 3); ++ } ++ ++ return 0; ++} ++ ++ ++ ++/*check for Kazaa get command*/ ++int ++search_kazaa (const unsigned char *payload, const u16 plen) ++ ++{ ++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a) && memcmp(payload, "GET /.hash=", 11) == 0) ++ return (IPP2P_DATA_KAZAA * 100); ++ ++ return 0; ++} ++ ++ ++/*check for gnutella get command*/ ++int ++search_gnu (const unsigned char *payload, const u16 plen) ++{ ++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a)) ++ { ++ if (memcmp(payload, "GET /get/", 9) == 0) return ((IPP2P_DATA_GNU * 100) + 1); ++ if (memcmp(payload, "GET /uri-res/", 13) == 0) return ((IPP2P_DATA_GNU * 100) + 2); ++ } ++ return 0; ++} ++ ++ ++/*check for gnutella get commands and other typical data*/ ++int ++search_all_gnu (const unsigned char *payload, const u16 plen) ++{ ++ ++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a)) ++ { ++ ++ if (memcmp(payload, "GNUTELLA CONNECT/", 17) == 0) return ((IPP2P_GNU * 100) + 1); ++ if (memcmp(payload, "GNUTELLA/", 9) == 0) return ((IPP2P_GNU * 100) + 2); ++ ++ ++ if ((memcmp(payload, "GET /get/", 9) == 0) || (memcmp(payload, "GET /uri-res/", 13) == 0)) ++ { ++ u16 c=8; ++ const u16 end=plen-22; ++ while (c < end) { ++ if ( payload[c] == 0x0a && payload[c+1] == 0x0d && ((memcmp(&payload[c+2], "X-Gnutella-", 11) == 0) || (memcmp(&payload[c+2], "X-Queue:", 8) == 0))) ++ return ((IPP2P_GNU * 100) + 3); ++ c++; ++ } ++ } ++ } ++ return 0; ++} ++ ++ ++/*check for KaZaA download commands and other typical data*/ ++int ++search_all_kazaa (const unsigned char *payload, const u16 plen) ++{ ++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a)) ++ { ++ ++ if (memcmp(payload, "GIVE ", 5) == 0) return ((IPP2P_KAZAA * 100) + 1); ++ ++ if (memcmp(payload, "GET /", 5) == 0) { ++ u16 c = 8; ++ const u16 end=plen-22; ++ while (c < end) { ++ if ( payload[c] == 0x0a && payload[c+1] == 0x0d && ((memcmp(&payload[c+2], "X-Kazaa-Username: ", 18) == 0) || (memcmp(&payload[c+2], "User-Agent: PeerEnabler/", 24) == 0))) ++ return ((IPP2P_KAZAA * 100) + 2); ++ c++; ++ } ++ } ++ } ++ return 0; ++} ++ ++/*fast check for edonkey file segment transfer command*/ ++int ++search_edk (const unsigned char *payload, const u16 plen) ++{ ++ if (payload[0] != 0xe3) ++ return 0; ++ else { ++ if (payload[5] == 0x47) ++ return (IPP2P_DATA_EDK * 100); ++ else ++ return 0; ++ } ++} ++ ++ ++ ++/*intensive but slower search for some edonkey packets including size-check*/ ++int ++search_all_edk (const unsigned char *payload, const u16 plen) ++{ ++ if (payload[0] != 0xe3) ++ return 0; ++ else { ++ //t += head_len; ++ const u16 cmd = get_u16(payload, 1); ++ if (cmd == (plen - 5)) { ++ switch (payload[5]) { ++ case 0x01: return ((IPP2P_EDK * 100) + 1); /*Client: hello or Server:hello*/ ++ case 0x4c: return ((IPP2P_EDK * 100) + 9); /*Client: Hello-Answer*/ ++ } ++ } ++ return 0; ++ } ++} ++ ++ ++/*fast check for Direct Connect send command*/ ++int ++search_dc (const unsigned char *payload, const u16 plen) ++{ ++ ++ if (payload[0] != 0x24 ) ++ return 0; ++ else { ++ if (memcmp(&payload[1], "Send|", 5) == 0) ++ return (IPP2P_DATA_DC * 100); ++ else ++ return 0; ++ } ++ ++} ++ ++ ++/*intensive but slower check for all direct connect packets*/ ++int ++search_all_dc (const unsigned char *payload, const u16 plen) ++{ ++// unsigned char *t = haystack; ++ ++ if (payload[0] == 0x24 && payload[plen-1] == 0x7c) ++ { ++ const unsigned char *t=&payload[1]; ++ /* Client-Hub-Protocol */ ++ if (memcmp(t, "Lock ", 5) == 0) return ((IPP2P_DC * 100) + 1); ++ /* Client-Client-Protocol, some are already recognized by client-hub (like lock) */ ++ if (memcmp(t, "MyNick ", 7) == 0) return ((IPP2P_DC * 100) + 38); ++ } ++ return 0; ++} ++ ++/*check for mute*/ ++int ++search_mute (const unsigned char *payload, const u16 plen) ++{ ++ if ( plen == 209 || plen == 345 || plen == 473 || plen == 609 || plen == 1121 ) ++ { ++ //printk(KERN_DEBUG "size hit: %u",size); ++ if (memcmp(payload,"PublicKey: ",11) == 0 ) ++ { ++ return ((IPP2P_MUTE * 100) + 0); ++ ++/* if (memcmp(t+size-14,"\x0aEndPublicKey\x0a",14) == 0) ++ { ++ printk(KERN_DEBUG "end pubic key hit: %u",size); ++ ++ }*/ ++ } ++ } ++ return 0; ++} ++ ++ ++/* check for xdcc */ ++int ++search_xdcc (const unsigned char *payload, const u16 plen) ++{ ++ /* search in small packets only */ ++ if (plen > 20 && plen < 200 && payload[plen-1] == 0x0a && payload[plen-2] == 0x0d && memcmp(payload,"PRIVMSG ",8) == 0) ++ { ++ ++ u16 x=10; ++ const u16 end=plen - 13; ++ ++ /* is seems to be a irc private massage, chedck for xdcc command */ ++ while (x < end) ++ { ++ if (payload[x] == ':') ++ { ++ if ( memcmp(&payload[x+1],"xdcc send #",11) == 0 ) ++ return ((IPP2P_XDCC * 100) + 0); ++ } ++ x++; ++ } ++ } ++ return 0; ++} ++ ++/* search for waste */ ++int search_waste(const unsigned char *payload, const u16 plen) ++{ ++ if ( plen >= 8 && memcmp(payload,"GET.sha1:",9) == 0) ++ return ((IPP2P_WASTE * 100) + 0); ++ ++ return 0; ++} ++ ++ ++static struct { ++ int command; ++ __u8 short_hand; /*for fucntions included in short hands*/ ++ int packet_len; ++ int (*function_name) (const unsigned char *, const u16); ++} matchlist[] = { ++ {IPP2P_EDK,SHORT_HAND_IPP2P,20, &search_all_edk}, ++// {IPP2P_DATA_KAZAA,SHORT_HAND_DATA,200, &search_kazaa}, ++// {IPP2P_DATA_EDK,SHORT_HAND_DATA,60, &search_edk}, ++// {IPP2P_DATA_DC,SHORT_HAND_DATA,26, &search_dc}, ++ {IPP2P_DC,SHORT_HAND_IPP2P,5, search_all_dc}, ++// {IPP2P_DATA_GNU,SHORT_HAND_DATA,40, &search_gnu}, ++ {IPP2P_GNU,SHORT_HAND_IPP2P,5, &search_all_gnu}, ++ {IPP2P_KAZAA,SHORT_HAND_IPP2P,5, &search_all_kazaa}, ++ {IPP2P_BIT,SHORT_HAND_IPP2P,20, &search_bittorrent}, ++ {IPP2P_APPLE,SHORT_HAND_IPP2P,5, &search_apple}, ++ {IPP2P_SOUL,SHORT_HAND_IPP2P,5, &search_soul}, ++ {IPP2P_WINMX,SHORT_HAND_IPP2P,2, &search_winmx}, ++ {IPP2P_ARES,SHORT_HAND_IPP2P,5, &search_ares}, ++ {IPP2P_MUTE,SHORT_HAND_NONE,200, &search_mute}, ++ {IPP2P_WASTE,SHORT_HAND_NONE,5, &search_waste}, ++ {IPP2P_XDCC,SHORT_HAND_NONE,5, &search_xdcc}, ++ {0,0,0,NULL} ++}; ++ ++ ++static struct { ++ int command; ++ __u8 short_hand; /*for fucntions included in short hands*/ ++ int packet_len; ++ int (*function_name) (unsigned char *, int); ++} udp_list[] = { ++ {IPP2P_KAZAA,SHORT_HAND_IPP2P,14, &udp_search_kazaa}, ++ {IPP2P_BIT,SHORT_HAND_IPP2P,23, &udp_search_bit}, ++ {IPP2P_GNU,SHORT_HAND_IPP2P,11, &udp_search_gnu}, ++ {IPP2P_EDK,SHORT_HAND_IPP2P,9, &udp_search_edk}, ++ {IPP2P_DC,SHORT_HAND_IPP2P,12, &udp_search_directconnect}, ++ {0,0,0,NULL} ++}; ++ ++ ++static int ++match(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ const struct xt_match *match, ++#endif ++ const void *matchinfo, ++ int offset, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ unsigned int protoff, ++#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ const void *hdr, ++ u_int16_t datalen, ++#endif ++ int *hotdrop) ++{ ++ const struct ipt_p2p_info *info = matchinfo; ++ unsigned char *haystack; ++ struct iphdr *ip = ip_hdr(skb); ++ int p2p_result = 0, i = 0; ++// int head_len; ++ int hlen = ntohs(ip->tot_len)-(ip->ihl*4); /*hlen = packet-data length*/ ++ ++ /*must not be a fragment*/ ++ if (offset) { ++ if (info->debug) printk("IPP2P.match: offset found %i \n",offset); ++ return 0; ++ } ++ ++ /*make sure that skb is linear*/ ++ if(skb_is_nonlinear(skb)){ ++ if (info->debug) printk("IPP2P.match: nonlinear skb found\n"); ++ return 0; ++ } ++ ++ ++ haystack=(char *)ip+(ip->ihl*4); /*haystack = packet data*/ ++ ++ switch (ip->protocol){ ++ case IPPROTO_TCP: /*what to do with a TCP packet*/ ++ { ++ struct tcphdr *tcph = (void *) ip + ip->ihl * 4; ++ ++ if (tcph->fin) return 0; /*if FIN bit is set bail out*/ ++ if (tcph->syn) return 0; /*if SYN bit is set bail out*/ ++ if (tcph->rst) return 0; /*if RST bit is set bail out*/ ++ ++ haystack += tcph->doff * 4; /*get TCP-Header-Size*/ ++ hlen -= tcph->doff * 4; ++ while (matchlist[i].command) { ++ if ((((info->cmd & matchlist[i].command) == matchlist[i].command) || ++ ((info->cmd & matchlist[i].short_hand) == matchlist[i].short_hand)) && ++ (hlen > matchlist[i].packet_len)) { ++ p2p_result = matchlist[i].function_name(haystack, hlen); ++ if (p2p_result) ++ { ++ if (info->debug) printk("IPP2P.debug:TCP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n", ++ p2p_result, NIPQUAD(ip->saddr),ntohs(tcph->source), NIPQUAD(ip->daddr),ntohs(tcph->dest),hlen); ++ return p2p_result; ++ } ++ } ++ i++; ++ } ++ return p2p_result; ++ } ++ ++ case IPPROTO_UDP: /*what to do with an UDP packet*/ ++ { ++ struct udphdr *udph = (void *) ip + ip->ihl * 4; ++ ++ while (udp_list[i].command){ ++ if ((((info->cmd & udp_list[i].command) == udp_list[i].command) || ++ ((info->cmd & udp_list[i].short_hand) == udp_list[i].short_hand)) && ++ (hlen > udp_list[i].packet_len)) { ++ p2p_result = udp_list[i].function_name(haystack, hlen); ++ if (p2p_result){ ++ if (info->debug) printk("IPP2P.debug:UDP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n", ++ p2p_result, NIPQUAD(ip->saddr),ntohs(udph->source), NIPQUAD(ip->daddr),ntohs(udph->dest),hlen); ++ return p2p_result; ++ } ++ } ++ i++; ++ } ++ return p2p_result; ++ } ++ ++ default: return 0; ++ } ++} ++ ++ ++ ++static int ++checkentry(const char *tablename, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ const void *ip, ++ const struct xt_match *match, ++#else ++ const struct ipt_ip *ip, ++#endif ++ void *matchinfo, ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ unsigned int matchsize, ++#endif ++ unsigned int hook_mask) ++{ ++ /* Must specify -p tcp */ ++/* if (ip->proto != IPPROTO_TCP || (ip->invflags & IPT_INV_PROTO)) { ++ * printk("ipp2p: Only works on TCP packets, use -p tcp\n"); ++ * return 0; ++ * }*/ ++ return 1; ++} ++ ++ ++ ++ ++static struct ipt_match ipp2p_match = { ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ { NULL, NULL }, ++ "ipp2p", ++ &match, ++ &checkentry, ++ NULL, ++ THIS_MODULE ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ .name = "ipp2p", ++ .match = &match, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ .matchsize = sizeof(struct ipt_p2p_info), ++#endif ++ .checkentry = &checkentry, ++ .me = THIS_MODULE, ++#endif ++}; ++ ++ ++static int __init init(void) ++{ ++ printk(KERN_INFO "IPP2P v%s loading\n", IPP2P_VERSION); ++ return xt_register_match(&ipp2p_match); ++} ++ ++static void __exit fini(void) ++{ ++ xt_unregister_match(&ipp2p_match); ++ printk(KERN_INFO "IPP2P v%s unloaded\n", IPP2P_VERSION); ++} ++ ++module_init(init); ++module_exit(fini); ++ ++ +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig 2007-05-26 20:17:47.626407992 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig 2007-05-26 20:21:54.587864144 +0200 +@@ -81,6 +81,12 @@ + help + Say Y to get lots of debugging output. + ++config IP_NF_MATCH_IPP2P ++ tristate "IPP2P" ++ depends on IP_NF_IPTABLES ++ help ++ Module for matching traffic of various Peer-to-Peer applications ++ + config IP_NF_MATCH_TOS + tristate "TOS match support" + depends on IP_NF_IPTABLES +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Makefile linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv4/netfilter/Makefile 2007-05-26 20:17:47.638406168 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile 2007-05-26 20:21:54.588863992 +0200 +@@ -49,7 +49,7 @@ + obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o + obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o + obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o +- ++obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o + obj-$(CONFIG_IP_NF_MATCH_LAYER7) += ipt_layer7.o + + # targets diff --git a/target/linux/generic-2.6/patches-2.6.22/120-openswan-2.4.0.kernel-2.6-natt.patch b/target/linux/generic-2.6/patches-2.6.22/120-openswan-2.4.0.kernel-2.6-natt.patch new file mode 100644 index 0000000000..4d9dc9500e --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/120-openswan-2.4.0.kernel-2.6-natt.patch @@ -0,0 +1,169 @@ +diff -urN linux-2.6.21.1.old/include/net/xfrmudp.h linux-2.6.21.1.dev/include/net/xfrmudp.h +--- linux-2.6.21.1.old/include/net/xfrmudp.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/net/xfrmudp.h 2007-05-26 20:24:53.933599448 +0200 +@@ -0,0 +1,10 @@ ++/* ++ * pointer to function for type that xfrm4_input wants, to permit ++ * decoupling of XFRM from udp.c ++ */ ++#define HAVE_XFRM4_UDP_REGISTER ++ ++typedef int (*xfrm4_rcv_encap_t)(struct sk_buff *skb, __u16 encap_type); ++extern int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func ++ , xfrm4_rcv_encap_t *oldfunc); ++extern int udp4_unregister_esp_rcvencap(xfrm4_rcv_encap_t func); +diff -urN linux-2.6.21.1.old/net/ipv4/Kconfig linux-2.6.21.1.dev/net/ipv4/Kconfig +--- linux-2.6.21.1.old/net/ipv4/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/Kconfig 2007-05-26 20:24:53.965594584 +0200 +@@ -266,6 +266,12 @@ + Network), but can be distributed all over the Internet. If you want + to do that, say Y here and to "IP multicast routing" below. + ++config IPSEC_NAT_TRAVERSAL ++ bool "IPSEC NAT-Traversal (KLIPS compatible)" ++ depends on INET ++ ---help--- ++ Includes support for RFC3947/RFC3948 NAT-Traversal of ESP over UDP. ++ + config IP_MROUTE + bool "IP: multicast routing" + depends on IP_MULTICAST +diff -urN linux-2.6.21.1.old/net/ipv4/udp.c linux-2.6.21.1.dev/net/ipv4/udp.c +--- linux-2.6.21.1.old/net/ipv4/udp.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/udp.c 2007-05-26 20:24:53.966594432 +0200 +@@ -101,12 +101,15 @@ + #include <net/route.h> + #include <net/checksum.h> + #include <net/xfrm.h> ++#include <net/xfrmudp.h> + #include "udp_impl.h" + + /* + * Snmp MIB for the UDP layer + */ + ++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func; ++ + DEFINE_SNMP_STAT(struct udp_mib, udp_statistics) __read_mostly; + + struct hlist_head udp_hash[UDP_HTABLE_SIZE]; +@@ -1008,6 +1011,42 @@ + return 0; + } + ++#if defined(CONFIG_XFRM) || defined(CONFIG_IPSEC_NAT_TRAVERSAL) ++ ++/* if XFRM isn't a module, then register it directly. */ ++#if 0 && !defined(CONFIG_XFRM_MODULE) && !defined(CONFIG_IPSEC_NAT_TRAVERSAL) ++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func = xfrm4_rcv_encap; ++#else ++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func = NULL; ++#endif ++ ++int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func ++ , xfrm4_rcv_encap_t *oldfunc) ++{ ++ if(oldfunc != NULL) { ++ *oldfunc = xfrm4_rcv_encap_func; ++ } ++ ++#if 0 ++ if(xfrm4_rcv_encap_func != NULL) ++ return -1; ++#endif ++ ++ xfrm4_rcv_encap_func = func; ++ return 0; ++} ++ ++int udp4_unregister_esp_rcvencap(xfrm4_rcv_encap_t func) ++{ ++ if(xfrm4_rcv_encap_func != func) ++ return -1; ++ ++ xfrm4_rcv_encap_func = NULL; ++ return 0; ++} ++#endif /* CONFIG_XFRM_MODULE || CONFIG_IPSEC_NAT_TRAVERSAL */ ++ ++ + /* return: + * 1 if the UDP system should process it + * 0 if we should drop this packet +@@ -1015,7 +1054,7 @@ + */ + static int udp_encap_rcv(struct sock * sk, struct sk_buff *skb) + { +-#ifndef CONFIG_XFRM ++#if !defined(CONFIG_XFRM) && !defined(CONFIG_IPSEC_NAT_TRAVERSAL) + return 1; + #else + struct udp_sock *up = udp_sk(sk); +@@ -1030,11 +1069,11 @@ + /* if we're overly short, let UDP handle it */ + len = skb->len - sizeof(struct udphdr); + if (len <= 0) +- return 1; ++ return 2; + + /* if this is not encapsulated socket, then just return now */ + if (!encap_type) +- return 1; ++ return 3; + + /* If this is a paged skb, make sure we pull up + * whatever data we need to look at. */ +@@ -1057,7 +1096,7 @@ + len = sizeof(struct udphdr); + } else + /* Must be an IKE packet.. pass it through */ +- return 1; ++ return 4; + break; + case UDP_ENCAP_ESPINUDP_NON_IKE: + /* Check if this is a keepalive packet. If so, eat it. */ +@@ -1070,7 +1109,7 @@ + len = sizeof(struct udphdr) + 2 * sizeof(u32); + } else + /* Must be an IKE packet.. pass it through */ +- return 1; ++ return 5; + break; + } + +@@ -1081,6 +1120,8 @@ + */ + if (skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) + return 0; ++ if (skb_cloned(skb) && pskb_expand_head(skb, 0, 0, GFP_ATOMIC)) ++ return 0; + + /* Now we can update and verify the packet length... */ + iph = ip_hdr(skb); +@@ -1145,9 +1186,13 @@ + return 0; + } + if (ret < 0) { +- /* process the ESP packet */ +- ret = xfrm4_rcv_encap(skb, up->encap_type); +- UDP_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag); ++ if(xfrm4_rcv_encap_func != NULL) { ++ ret = (*xfrm4_rcv_encap_func)(skb, up->encap_type); ++ UDP_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag); ++ } else { ++ UDP_INC_STATS_BH(UDP_MIB_INERRORS, up->pcflag); ++ ret = 1; ++ } + return -ret; + } + /* FALLTHROUGH -- it's a UDP Packet */ +@@ -1847,3 +1892,9 @@ + EXPORT_SYMBOL(udp_proc_register); + EXPORT_SYMBOL(udp_proc_unregister); + #endif ++ ++#if defined(CONFIG_IPSEC_NAT_TRAVERSAL) ++EXPORT_SYMBOL(udp4_register_esp_rcvencap); ++EXPORT_SYMBOL(udp4_unregister_esp_rcvencap); ++#endif ++ diff --git a/target/linux/generic-2.6/patches-2.6.22/130-netfilter-ipset.patch b/target/linux/generic-2.6/patches-2.6.22/130-netfilter-ipset.patch new file mode 100644 index 0000000000..f52d0ea730 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/130-netfilter-ipset.patch @@ -0,0 +1,6625 @@ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set.h 2007-06-08 16:29:31.825808000 -0500 +@@ -0,0 +1,498 @@ ++#ifndef _IP_SET_H ++#define _IP_SET_H ++ ++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> ++ * Patrick Schaaf <bof@bof.de> ++ * Martin Josefsson <gandalf@wlug.westbo.se> ++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#if 0 ++#define IP_SET_DEBUG ++#endif ++ ++/* ++ * A sockopt of such quality has hardly ever been seen before on the open ++ * market! This little beauty, hardly ever used: above 64, so it's ++ * traditionally used for firewalling, not touched (even once!) by the ++ * 2.0, 2.2 and 2.4 kernels! ++ * ++ * Comes with its own certificate of authenticity, valid anywhere in the ++ * Free world! ++ * ++ * Rusty, 19.4.2000 ++ */ ++#define SO_IP_SET 83 ++ ++/* ++ * Heavily modify by Joakim Axelsson 08.03.2002 ++ * - Made it more modulebased ++ * ++ * Additional heavy modifications by Jozsef Kadlecsik 22.02.2004 ++ * - bindings added ++ * - in order to "deal with" backward compatibility, renamed to ipset ++ */ ++ ++/* ++ * Used so that the kernel module and ipset-binary can match their versions ++ */ ++#define IP_SET_PROTOCOL_VERSION 2 ++ ++#define IP_SET_MAXNAMELEN 32 /* set names and set typenames */ ++ ++/* Lets work with our own typedef for representing an IP address. ++ * We hope to make the code more portable, possibly to IPv6... ++ * ++ * The representation works in HOST byte order, because most set types ++ * will perform arithmetic operations and compare operations. ++ * ++ * For now the type is an uint32_t. ++ * ++ * Make sure to ONLY use the functions when translating and parsing ++ * in order to keep the host byte order and make it more portable: ++ * parse_ip() ++ * parse_mask() ++ * parse_ipandmask() ++ * ip_tostring() ++ * (Joakim: where are they???) ++ */ ++ ++typedef uint32_t ip_set_ip_t; ++ ++/* Sets are identified by an id in kernel space. Tweak with ip_set_id_t ++ * and IP_SET_INVALID_ID if you want to increase the max number of sets. ++ */ ++typedef uint16_t ip_set_id_t; ++ ++#define IP_SET_INVALID_ID 65535 ++ ++/* How deep we follow bindings */ ++#define IP_SET_MAX_BINDINGS 6 ++ ++/* ++ * Option flags for kernel operations (ipt_set_info) ++ */ ++#define IPSET_SRC 0x01 /* Source match/add */ ++#define IPSET_DST 0x02 /* Destination match/add */ ++#define IPSET_MATCH_INV 0x04 /* Inverse matching */ ++ ++/* ++ * Set features ++ */ ++#define IPSET_TYPE_IP 0x01 /* IP address type of set */ ++#define IPSET_TYPE_PORT 0x02 /* Port type of set */ ++#define IPSET_DATA_SINGLE 0x04 /* Single data storage */ ++#define IPSET_DATA_DOUBLE 0x08 /* Double data storage */ ++ ++/* Reserved keywords */ ++#define IPSET_TOKEN_DEFAULT ":default:" ++#define IPSET_TOKEN_ALL ":all:" ++ ++/* SO_IP_SET operation constants, and their request struct types. ++ * ++ * Operation ids: ++ * 0-99: commands with version checking ++ * 100-199: add/del/test/bind/unbind ++ * 200-299: list, save, restore ++ */ ++ ++/* Single shot operations: ++ * version, create, destroy, flush, rename and swap ++ * ++ * Sets are identified by name. ++ */ ++ ++#define IP_SET_REQ_STD \ ++ unsigned op; \ ++ unsigned version; \ ++ char name[IP_SET_MAXNAMELEN] ++ ++#define IP_SET_OP_CREATE 0x00000001 /* Create a new (empty) set */ ++struct ip_set_req_create { ++ IP_SET_REQ_STD; ++ char typename[IP_SET_MAXNAMELEN]; ++}; ++ ++#define IP_SET_OP_DESTROY 0x00000002 /* Remove a (empty) set */ ++struct ip_set_req_std { ++ IP_SET_REQ_STD; ++}; ++ ++#define IP_SET_OP_FLUSH 0x00000003 /* Remove all IPs in a set */ ++/* Uses ip_set_req_std */ ++ ++#define IP_SET_OP_RENAME 0x00000004 /* Rename a set */ ++/* Uses ip_set_req_create */ ++ ++#define IP_SET_OP_SWAP 0x00000005 /* Swap two sets */ ++/* Uses ip_set_req_create */ ++ ++union ip_set_name_index { ++ char name[IP_SET_MAXNAMELEN]; ++ ip_set_id_t index; ++}; ++ ++#define IP_SET_OP_GET_BYNAME 0x00000006 /* Get set index by name */ ++struct ip_set_req_get_set { ++ unsigned op; ++ unsigned version; ++ union ip_set_name_index set; ++}; ++ ++#define IP_SET_OP_GET_BYINDEX 0x00000007 /* Get set name by index */ ++/* Uses ip_set_req_get_set */ ++ ++#define IP_SET_OP_VERSION 0x00000100 /* Ask kernel version */ ++struct ip_set_req_version { ++ unsigned op; ++ unsigned version; ++}; ++ ++/* Double shots operations: ++ * add, del, test, bind and unbind. ++ * ++ * First we query the kernel to get the index and type of the target set, ++ * then issue the command. Validity of IP is checked in kernel in order ++ * to minimalize sockopt operations. ++ */ ++ ++/* Get minimal set data for add/del/test/bind/unbind IP */ ++#define IP_SET_OP_ADT_GET 0x00000010 /* Get set and type */ ++struct ip_set_req_adt_get { ++ unsigned op; ++ unsigned version; ++ union ip_set_name_index set; ++ char typename[IP_SET_MAXNAMELEN]; ++}; ++ ++#define IP_SET_REQ_BYINDEX \ ++ unsigned op; \ ++ ip_set_id_t index; ++ ++struct ip_set_req_adt { ++ IP_SET_REQ_BYINDEX; ++}; ++ ++#define IP_SET_OP_ADD_IP 0x00000101 /* Add an IP to a set */ ++/* Uses ip_set_req_adt, with type specific addage */ ++ ++#define IP_SET_OP_DEL_IP 0x00000102 /* Remove an IP from a set */ ++/* Uses ip_set_req_adt, with type specific addage */ ++ ++#define IP_SET_OP_TEST_IP 0x00000103 /* Test an IP in a set */ ++/* Uses ip_set_req_adt, with type specific addage */ ++ ++#define IP_SET_OP_BIND_SET 0x00000104 /* Bind an IP to a set */ ++/* Uses ip_set_req_bind, with type specific addage */ ++struct ip_set_req_bind { ++ IP_SET_REQ_BYINDEX; ++ char binding[IP_SET_MAXNAMELEN]; ++}; ++ ++#define IP_SET_OP_UNBIND_SET 0x00000105 /* Unbind an IP from a set */ ++/* Uses ip_set_req_bind, with type speficic addage ++ * index = 0 means unbinding for all sets */ ++ ++#define IP_SET_OP_TEST_BIND_SET 0x00000106 /* Test binding an IP to a set */ ++/* Uses ip_set_req_bind, with type specific addage */ ++ ++/* Multiple shots operations: list, save, restore. ++ * ++ * - check kernel version and query the max number of sets ++ * - get the basic information on all sets ++ * and size required for the next step ++ * - get actual set data: header, data, bindings ++ */ ++ ++/* Get max_sets and the index of a queried set ++ */ ++#define IP_SET_OP_MAX_SETS 0x00000020 ++struct ip_set_req_max_sets { ++ unsigned op; ++ unsigned version; ++ ip_set_id_t max_sets; /* max_sets */ ++ ip_set_id_t sets; /* real number of sets */ ++ union ip_set_name_index set; /* index of set if name used */ ++}; ++ ++/* Get the id and name of the sets plus size for next step */ ++#define IP_SET_OP_LIST_SIZE 0x00000201 ++#define IP_SET_OP_SAVE_SIZE 0x00000202 ++struct ip_set_req_setnames { ++ unsigned op; ++ ip_set_id_t index; /* set to list/save */ ++ size_t size; /* size to get setdata/bindings */ ++ /* followed by sets number of struct ip_set_name_list */ ++}; ++ ++struct ip_set_name_list { ++ char name[IP_SET_MAXNAMELEN]; ++ char typename[IP_SET_MAXNAMELEN]; ++ ip_set_id_t index; ++ ip_set_id_t id; ++}; ++ ++/* The actual list operation */ ++#define IP_SET_OP_LIST 0x00000203 ++struct ip_set_req_list { ++ IP_SET_REQ_BYINDEX; ++ /* sets number of struct ip_set_list in reply */ ++}; ++ ++struct ip_set_list { ++ ip_set_id_t index; ++ ip_set_id_t binding; ++ u_int32_t ref; ++ size_t header_size; /* Set header data of header_size */ ++ size_t members_size; /* Set members data of members_size */ ++ size_t bindings_size; /* Set bindings data of bindings_size */ ++}; ++ ++struct ip_set_hash_list { ++ ip_set_ip_t ip; ++ ip_set_id_t binding; ++}; ++ ++/* The save operation */ ++#define IP_SET_OP_SAVE 0x00000204 ++/* Uses ip_set_req_list, in the reply replaced by ++ * sets number of struct ip_set_save plus a marker ++ * ip_set_save followed by ip_set_hash_save structures. ++ */ ++struct ip_set_save { ++ ip_set_id_t index; ++ ip_set_id_t binding; ++ size_t header_size; /* Set header data of header_size */ ++ size_t members_size; /* Set members data of members_size */ ++}; ++ ++/* At restoring, ip == 0 means default binding for the given set: */ ++struct ip_set_hash_save { ++ ip_set_ip_t ip; ++ ip_set_id_t id; ++ ip_set_id_t binding; ++}; ++ ++/* The restore operation */ ++#define IP_SET_OP_RESTORE 0x00000205 ++/* Uses ip_set_req_setnames followed by ip_set_restore structures ++ * plus a marker ip_set_restore, followed by ip_set_hash_save ++ * structures. ++ */ ++struct ip_set_restore { ++ char name[IP_SET_MAXNAMELEN]; ++ char typename[IP_SET_MAXNAMELEN]; ++ ip_set_id_t index; ++ size_t header_size; /* Create data of header_size */ ++ size_t members_size; /* Set members data of members_size */ ++}; ++ ++static inline int bitmap_bytes(ip_set_ip_t a, ip_set_ip_t b) ++{ ++ return 4 * ((((b - a + 8) / 8) + 3) / 4); ++} ++ ++#ifdef __KERNEL__ ++ ++#define ip_set_printk(format, args...) \ ++ do { \ ++ printk("%s: %s: ", __FILE__, __FUNCTION__); \ ++ printk(format "\n" , ## args); \ ++ } while (0) ++ ++#if defined(IP_SET_DEBUG) ++#define DP(format, args...) \ ++ do { \ ++ printk("%s: %s (DBG): ", __FILE__, __FUNCTION__);\ ++ printk(format "\n" , ## args); \ ++ } while (0) ++#define IP_SET_ASSERT(x) \ ++ do { \ ++ if (!(x)) \ ++ printk("IP_SET_ASSERT: %s:%i(%s)\n", \ ++ __FILE__, __LINE__, __FUNCTION__); \ ++ } while (0) ++#else ++#define DP(format, args...) ++#define IP_SET_ASSERT(x) ++#endif ++ ++struct ip_set; ++ ++/* ++ * The ip_set_type definition - one per set type, e.g. "ipmap". ++ * ++ * Each individual set has a pointer, set->type, going to one ++ * of these structures. Function pointers inside the structure implement ++ * the real behaviour of the sets. ++ * ++ * If not mentioned differently, the implementation behind the function ++ * pointers of a set_type, is expected to return 0 if ok, and a negative ++ * errno (e.g. -EINVAL) on error. ++ */ ++struct ip_set_type { ++ struct list_head list; /* next in list of set types */ ++ ++ /* test for IP in set (kernel: iptables -m set src|dst) ++ * return 0 if not in set, 1 if in set. ++ */ ++ int (*testip_kernel) (struct ip_set *set, ++ const struct sk_buff * skb, ++ ip_set_ip_t *ip, ++ const u_int32_t *flags, ++ unsigned char index); ++ ++ /* test for IP in set (userspace: ipset -T set IP) ++ * return 0 if not in set, 1 if in set. ++ */ ++ int (*testip) (struct ip_set *set, ++ const void *data, size_t size, ++ ip_set_ip_t *ip); ++ ++ /* ++ * Size of the data structure passed by when ++ * adding/deletin/testing an entry. ++ */ ++ size_t reqsize; ++ ++ /* Add IP into set (userspace: ipset -A set IP) ++ * Return -EEXIST if the address is already in the set, ++ * and -ERANGE if the address lies outside the set bounds. ++ * If the address was not already in the set, 0 is returned. ++ */ ++ int (*addip) (struct ip_set *set, ++ const void *data, size_t size, ++ ip_set_ip_t *ip); ++ ++ /* Add IP into set (kernel: iptables ... -j SET set src|dst) ++ * Return -EEXIST if the address is already in the set, ++ * and -ERANGE if the address lies outside the set bounds. ++ * If the address was not already in the set, 0 is returned. ++ */ ++ int (*addip_kernel) (struct ip_set *set, ++ const struct sk_buff * skb, ++ ip_set_ip_t *ip, ++ const u_int32_t *flags, ++ unsigned char index); ++ ++ /* remove IP from set (userspace: ipset -D set --entry x) ++ * Return -EEXIST if the address is NOT in the set, ++ * and -ERANGE if the address lies outside the set bounds. ++ * If the address really was in the set, 0 is returned. ++ */ ++ int (*delip) (struct ip_set *set, ++ const void *data, size_t size, ++ ip_set_ip_t *ip); ++ ++ /* remove IP from set (kernel: iptables ... -j SET --entry x) ++ * Return -EEXIST if the address is NOT in the set, ++ * and -ERANGE if the address lies outside the set bounds. ++ * If the address really was in the set, 0 is returned. ++ */ ++ int (*delip_kernel) (struct ip_set *set, ++ const struct sk_buff * skb, ++ ip_set_ip_t *ip, ++ const u_int32_t *flags, ++ unsigned char index); ++ ++ /* new set creation - allocated type specific items ++ */ ++ int (*create) (struct ip_set *set, ++ const void *data, size_t size); ++ ++ /* retry the operation after successfully tweaking the set ++ */ ++ int (*retry) (struct ip_set *set); ++ ++ /* set destruction - free type specific items ++ * There is no return value. ++ * Can be called only when child sets are destroyed. ++ */ ++ void (*destroy) (struct ip_set *set); ++ ++ /* set flushing - reset all bits in the set, or something similar. ++ * There is no return value. ++ */ ++ void (*flush) (struct ip_set *set); ++ ++ /* Listing: size needed for header ++ */ ++ size_t header_size; ++ ++ /* Listing: Get the header ++ * ++ * Fill in the information in "data". ++ * This function is always run after list_header_size() under a ++ * writelock on the set. Therefor is the length of "data" always ++ * correct. ++ */ ++ void (*list_header) (const struct ip_set *set, ++ void *data); ++ ++ /* Listing: Get the size for the set members ++ */ ++ int (*list_members_size) (const struct ip_set *set); ++ ++ /* Listing: Get the set members ++ * ++ * Fill in the information in "data". ++ * This function is always run after list_member_size() under a ++ * writelock on the set. Therefor is the length of "data" always ++ * correct. ++ */ ++ void (*list_members) (const struct ip_set *set, ++ void *data); ++ ++ char typename[IP_SET_MAXNAMELEN]; ++ unsigned char features; ++ int protocol_version; ++ ++ /* Set this to THIS_MODULE if you are a module, otherwise NULL */ ++ struct module *me; ++}; ++ ++extern int ip_set_register_set_type(struct ip_set_type *set_type); ++extern void ip_set_unregister_set_type(struct ip_set_type *set_type); ++ ++/* A generic ipset */ ++struct ip_set { ++ char name[IP_SET_MAXNAMELEN]; /* the name of the set */ ++ rwlock_t lock; /* lock for concurrency control */ ++ ip_set_id_t id; /* set id for swapping */ ++ ip_set_id_t binding; /* default binding for the set */ ++ atomic_t ref; /* in kernel and in hash references */ ++ struct ip_set_type *type; /* the set types */ ++ void *data; /* pooltype specific data */ ++}; ++ ++/* Structure to bind set elements to sets */ ++struct ip_set_hash { ++ struct list_head list; /* list of clashing entries in hash */ ++ ip_set_ip_t ip; /* ip from set */ ++ ip_set_id_t id; /* set id */ ++ ip_set_id_t binding; /* set we bind the element to */ ++}; ++ ++/* register and unregister set references */ ++extern ip_set_id_t ip_set_get_byname(const char name[IP_SET_MAXNAMELEN]); ++extern ip_set_id_t ip_set_get_byindex(ip_set_id_t id); ++extern void ip_set_put(ip_set_id_t id); ++ ++/* API for iptables set match, and SET target */ ++extern void ip_set_addip_kernel(ip_set_id_t id, ++ const struct sk_buff *skb, ++ const u_int32_t *flags); ++extern void ip_set_delip_kernel(ip_set_id_t id, ++ const struct sk_buff *skb, ++ const u_int32_t *flags); ++extern int ip_set_testip_kernel(ip_set_id_t id, ++ const struct sk_buff *skb, ++ const u_int32_t *flags); ++ ++#endif /* __KERNEL__ */ ++ ++#endif /*_IP_SET_H*/ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_iphash.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_iphash.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_iphash.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_iphash.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,30 @@ ++#ifndef __IP_SET_IPHASH_H ++#define __IP_SET_IPHASH_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "iphash" ++#define MAX_RANGE 0x0000FFFF ++ ++struct ip_set_iphash { ++ ip_set_ip_t *members; /* the iphash proper */ ++ uint32_t elements; /* number of elements */ ++ uint32_t hashsize; /* hash size */ ++ uint16_t probes; /* max number of probes */ ++ uint16_t resize; /* resize factor in percent */ ++ ip_set_ip_t netmask; /* netmask */ ++ void *initval[0]; /* initvals for jhash_1word */ ++}; ++ ++struct ip_set_req_iphash_create { ++ uint32_t hashsize; ++ uint16_t probes; ++ uint16_t resize; ++ ip_set_ip_t netmask; ++}; ++ ++struct ip_set_req_iphash { ++ ip_set_ip_t ip; ++}; ++ ++#endif /* __IP_SET_IPHASH_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_ipmap.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_ipmap.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_ipmap.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_ipmap.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,56 @@ ++#ifndef __IP_SET_IPMAP_H ++#define __IP_SET_IPMAP_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "ipmap" ++#define MAX_RANGE 0x0000FFFF ++ ++struct ip_set_ipmap { ++ void *members; /* the ipmap proper */ ++ ip_set_ip_t first_ip; /* host byte order, included in range */ ++ ip_set_ip_t last_ip; /* host byte order, included in range */ ++ ip_set_ip_t netmask; /* subnet netmask */ ++ ip_set_ip_t sizeid; /* size of set in IPs */ ++ ip_set_ip_t hosts; /* number of hosts in a subnet */ ++}; ++ ++struct ip_set_req_ipmap_create { ++ ip_set_ip_t from; ++ ip_set_ip_t to; ++ ip_set_ip_t netmask; ++}; ++ ++struct ip_set_req_ipmap { ++ ip_set_ip_t ip; ++}; ++ ++unsigned int ++mask_to_bits(ip_set_ip_t mask) ++{ ++ unsigned int bits = 32; ++ ip_set_ip_t maskaddr; ++ ++ if (mask == 0xFFFFFFFF) ++ return bits; ++ ++ maskaddr = 0xFFFFFFFE; ++ while (--bits >= 0 && maskaddr != mask) ++ maskaddr <<= 1; ++ ++ return bits; ++} ++ ++ip_set_ip_t ++range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits) ++{ ++ ip_set_ip_t mask = 0xFFFFFFFE; ++ ++ *bits = 32; ++ while (--(*bits) >= 0 && mask && (to & mask) != from) ++ mask <<= 1; ++ ++ return mask; ++} ++ ++#endif /* __IP_SET_IPMAP_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_ipporthash.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_ipporthash.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_ipporthash.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_ipporthash.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,34 @@ ++#ifndef __IP_SET_IPPORTHASH_H ++#define __IP_SET_IPPORTHASH_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "ipporthash" ++#define MAX_RANGE 0x0000FFFF ++#define INVALID_PORT (MAX_RANGE + 1) ++ ++struct ip_set_ipporthash { ++ ip_set_ip_t *members; /* the ipporthash proper */ ++ uint32_t elements; /* number of elements */ ++ uint32_t hashsize; /* hash size */ ++ uint16_t probes; /* max number of probes */ ++ uint16_t resize; /* resize factor in percent */ ++ ip_set_ip_t first_ip; /* host byte order, included in range */ ++ ip_set_ip_t last_ip; /* host byte order, included in range */ ++ void *initval[0]; /* initvals for jhash_1word */ ++}; ++ ++struct ip_set_req_ipporthash_create { ++ uint32_t hashsize; ++ uint16_t probes; ++ uint16_t resize; ++ ip_set_ip_t from; ++ ip_set_ip_t to; ++}; ++ ++struct ip_set_req_ipporthash { ++ ip_set_ip_t ip; ++ ip_set_ip_t port; ++}; ++ ++#endif /* __IP_SET_IPPORTHASH_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_iptree.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_iptree.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_iptree.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_iptree.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,40 @@ ++#ifndef __IP_SET_IPTREE_H ++#define __IP_SET_IPTREE_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "iptree" ++#define MAX_RANGE 0x0000FFFF ++ ++struct ip_set_iptreed { ++ unsigned long expires[256]; /* x.x.x.ADDR */ ++}; ++ ++struct ip_set_iptreec { ++ struct ip_set_iptreed *tree[256]; /* x.x.ADDR.* */ ++}; ++ ++struct ip_set_iptreeb { ++ struct ip_set_iptreec *tree[256]; /* x.ADDR.*.* */ ++}; ++ ++struct ip_set_iptree { ++ unsigned int timeout; ++ unsigned int gc_interval; ++#ifdef __KERNEL__ ++ uint32_t elements; /* number of elements */ ++ struct timer_list gc; ++ struct ip_set_iptreeb *tree[256]; /* ADDR.*.*.* */ ++#endif ++}; ++ ++struct ip_set_req_iptree_create { ++ unsigned int timeout; ++}; ++ ++struct ip_set_req_iptree { ++ ip_set_ip_t ip; ++ unsigned int timeout; ++}; ++ ++#endif /* __IP_SET_IPTREE_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_jhash.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_jhash.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_jhash.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_jhash.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,148 @@ ++#ifndef _LINUX_IPSET_JHASH_H ++#define _LINUX_IPSET_JHASH_H ++ ++/* This is a copy of linux/jhash.h but the types u32/u8 are changed ++ * to __u32/__u8 so that the header file can be included into ++ * userspace code as well. Jozsef Kadlecsik (kadlec@blackhole.kfki.hu) ++ */ ++ ++/* jhash.h: Jenkins hash support. ++ * ++ * Copyright (C) 1996 Bob Jenkins (bob_jenkins@burtleburtle.net) ++ * ++ * http://burtleburtle.net/bob/hash/ ++ * ++ * These are the credits from Bob's sources: ++ * ++ * lookup2.c, by Bob Jenkins, December 1996, Public Domain. ++ * hash(), hash2(), hash3, and mix() are externally useful functions. ++ * Routines to test the hash are included if SELF_TEST is defined. ++ * You can use this free for any purpose. It has no warranty. ++ * ++ * Copyright (C) 2003 David S. Miller (davem@redhat.com) ++ * ++ * I've modified Bob's hash to be useful in the Linux kernel, and ++ * any bugs present are surely my fault. -DaveM ++ */ ++ ++/* NOTE: Arguments are modified. */ ++#define __jhash_mix(a, b, c) \ ++{ \ ++ a -= b; a -= c; a ^= (c>>13); \ ++ b -= c; b -= a; b ^= (a<<8); \ ++ c -= a; c -= b; c ^= (b>>13); \ ++ a -= b; a -= c; a ^= (c>>12); \ ++ b -= c; b -= a; b ^= (a<<16); \ ++ c -= a; c -= b; c ^= (b>>5); \ ++ a -= b; a -= c; a ^= (c>>3); \ ++ b -= c; b -= a; b ^= (a<<10); \ ++ c -= a; c -= b; c ^= (b>>15); \ ++} ++ ++/* The golden ration: an arbitrary value */ ++#define JHASH_GOLDEN_RATIO 0x9e3779b9 ++ ++/* The most generic version, hashes an arbitrary sequence ++ * of bytes. No alignment or length assumptions are made about ++ * the input key. ++ */ ++static inline __u32 jhash(void *key, __u32 length, __u32 initval) ++{ ++ __u32 a, b, c, len; ++ __u8 *k = key; ++ ++ len = length; ++ a = b = JHASH_GOLDEN_RATIO; ++ c = initval; ++ ++ while (len >= 12) { ++ a += (k[0] +((__u32)k[1]<<8) +((__u32)k[2]<<16) +((__u32)k[3]<<24)); ++ b += (k[4] +((__u32)k[5]<<8) +((__u32)k[6]<<16) +((__u32)k[7]<<24)); ++ c += (k[8] +((__u32)k[9]<<8) +((__u32)k[10]<<16)+((__u32)k[11]<<24)); ++ ++ __jhash_mix(a,b,c); ++ ++ k += 12; ++ len -= 12; ++ } ++ ++ c += length; ++ switch (len) { ++ case 11: c += ((__u32)k[10]<<24); ++ case 10: c += ((__u32)k[9]<<16); ++ case 9 : c += ((__u32)k[8]<<8); ++ case 8 : b += ((__u32)k[7]<<24); ++ case 7 : b += ((__u32)k[6]<<16); ++ case 6 : b += ((__u32)k[5]<<8); ++ case 5 : b += k[4]; ++ case 4 : a += ((__u32)k[3]<<24); ++ case 3 : a += ((__u32)k[2]<<16); ++ case 2 : a += ((__u32)k[1]<<8); ++ case 1 : a += k[0]; ++ }; ++ ++ __jhash_mix(a,b,c); ++ ++ return c; ++} ++ ++/* A special optimized version that handles 1 or more of __u32s. ++ * The length parameter here is the number of __u32s in the key. ++ */ ++static inline __u32 jhash2(__u32 *k, __u32 length, __u32 initval) ++{ ++ __u32 a, b, c, len; ++ ++ a = b = JHASH_GOLDEN_RATIO; ++ c = initval; ++ len = length; ++ ++ while (len >= 3) { ++ a += k[0]; ++ b += k[1]; ++ c += k[2]; ++ __jhash_mix(a, b, c); ++ k += 3; len -= 3; ++ } ++ ++ c += length * 4; ++ ++ switch (len) { ++ case 2 : b += k[1]; ++ case 1 : a += k[0]; ++ }; ++ ++ __jhash_mix(a,b,c); ++ ++ return c; ++} ++ ++ ++/* A special ultra-optimized versions that knows they are hashing exactly ++ * 3, 2 or 1 word(s). ++ * ++ * NOTE: In partilar the "c += length; __jhash_mix(a,b,c);" normally ++ * done at the end is not done here. ++ */ ++static inline __u32 jhash_3words(__u32 a, __u32 b, __u32 c, __u32 initval) ++{ ++ a += JHASH_GOLDEN_RATIO; ++ b += JHASH_GOLDEN_RATIO; ++ c += initval; ++ ++ __jhash_mix(a, b, c); ++ ++ return c; ++} ++ ++static inline __u32 jhash_2words(__u32 a, __u32 b, __u32 initval) ++{ ++ return jhash_3words(a, b, 0, initval); ++} ++ ++static inline __u32 jhash_1word(__u32 a, __u32 initval) ++{ ++ return jhash_3words(a, 0, 0, initval); ++} ++ ++#endif /* _LINUX_IPSET_JHASH_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_macipmap.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_macipmap.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_macipmap.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_macipmap.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,38 @@ ++#ifndef __IP_SET_MACIPMAP_H ++#define __IP_SET_MACIPMAP_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "macipmap" ++#define MAX_RANGE 0x0000FFFF ++ ++/* general flags */ ++#define IPSET_MACIP_MATCHUNSET 1 ++ ++/* per ip flags */ ++#define IPSET_MACIP_ISSET 1 ++ ++struct ip_set_macipmap { ++ void *members; /* the macipmap proper */ ++ ip_set_ip_t first_ip; /* host byte order, included in range */ ++ ip_set_ip_t last_ip; /* host byte order, included in range */ ++ u_int32_t flags; ++}; ++ ++struct ip_set_req_macipmap_create { ++ ip_set_ip_t from; ++ ip_set_ip_t to; ++ u_int32_t flags; ++}; ++ ++struct ip_set_req_macipmap { ++ ip_set_ip_t ip; ++ unsigned char ethernet[ETH_ALEN]; ++}; ++ ++struct ip_set_macip { ++ unsigned short flags; ++ unsigned char ethernet[ETH_ALEN]; ++}; ++ ++#endif /* __IP_SET_MACIPMAP_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_malloc.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_malloc.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_malloc.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_malloc.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,116 @@ ++#ifndef _IP_SET_MALLOC_H ++#define _IP_SET_MALLOC_H ++ ++#ifdef __KERNEL__ ++ ++/* Memory allocation and deallocation */ ++static size_t max_malloc_size = 0; ++ ++static inline void init_max_malloc_size(void) ++{ ++#define CACHE(x) max_malloc_size = x; ++#include <linux/kmalloc_sizes.h> ++#undef CACHE ++} ++ ++static inline void * ip_set_malloc(size_t bytes) ++{ ++ if (bytes > max_malloc_size) ++ return vmalloc(bytes); ++ else ++ return kmalloc(bytes, GFP_KERNEL); ++} ++ ++static inline void ip_set_free(void * data, size_t bytes) ++{ ++ if (bytes > max_malloc_size) ++ vfree(data); ++ else ++ kfree(data); ++} ++ ++struct harray { ++ size_t max_elements; ++ void *arrays[0]; ++}; ++ ++static inline void * ++harray_malloc(size_t hashsize, size_t typesize, int flags) ++{ ++ struct harray *harray; ++ size_t max_elements, size, i, j; ++ ++ if (!max_malloc_size) ++ init_max_malloc_size(); ++ ++ if (typesize > max_malloc_size) ++ return NULL; ++ ++ max_elements = max_malloc_size/typesize; ++ size = hashsize/max_elements; ++ if (hashsize % max_elements) ++ size++; ++ ++ /* Last pointer signals end of arrays */ ++ harray = kmalloc(sizeof(struct harray) + (size + 1) * sizeof(void *), ++ flags); ++ ++ if (!harray) ++ return NULL; ++ ++ for (i = 0; i < size - 1; i++) { ++ harray->arrays[i] = kmalloc(max_elements * typesize, flags); ++ if (!harray->arrays[i]) ++ goto undo; ++ memset(harray->arrays[i], 0, max_elements * typesize); ++ } ++ harray->arrays[i] = kmalloc((hashsize - i * max_elements) * typesize, ++ flags); ++ if (!harray->arrays[i]) ++ goto undo; ++ memset(harray->arrays[i], 0, (hashsize - i * max_elements) * typesize); ++ ++ harray->max_elements = max_elements; ++ harray->arrays[size] = NULL; ++ ++ return (void *)harray; ++ ++ undo: ++ for (j = 0; j < i; j++) { ++ kfree(harray->arrays[j]); ++ } ++ kfree(harray); ++ return NULL; ++} ++ ++static inline void harray_free(void *h) ++{ ++ struct harray *harray = (struct harray *) h; ++ size_t i; ++ ++ for (i = 0; harray->arrays[i] != NULL; i++) ++ kfree(harray->arrays[i]); ++ kfree(harray); ++} ++ ++static inline void harray_flush(void *h, size_t hashsize, size_t typesize) ++{ ++ struct harray *harray = (struct harray *) h; ++ size_t i; ++ ++ for (i = 0; harray->arrays[i+1] != NULL; i++) ++ memset(harray->arrays[i], 0, harray->max_elements * typesize); ++ memset(harray->arrays[i], 0, ++ (hashsize - i * harray->max_elements) * typesize); ++} ++ ++#define HARRAY_ELEM(h, type, which) \ ++({ \ ++ struct harray *__h = (struct harray *)(h); \ ++ ((type)((__h)->arrays[(which)/(__h)->max_elements]) \ ++ + (which)%(__h)->max_elements); \ ++}) ++ ++#endif /* __KERNEL__ */ ++ ++#endif /*_IP_SET_MALLOC_H*/ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_nethash.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_nethash.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_nethash.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_nethash.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,55 @@ ++#ifndef __IP_SET_NETHASH_H ++#define __IP_SET_NETHASH_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "nethash" ++#define MAX_RANGE 0x0000FFFF ++ ++struct ip_set_nethash { ++ ip_set_ip_t *members; /* the nethash proper */ ++ uint32_t elements; /* number of elements */ ++ uint32_t hashsize; /* hash size */ ++ uint16_t probes; /* max number of probes */ ++ uint16_t resize; /* resize factor in percent */ ++ unsigned char cidr[30]; /* CIDR sizes */ ++ void *initval[0]; /* initvals for jhash_1word */ ++}; ++ ++struct ip_set_req_nethash_create { ++ uint32_t hashsize; ++ uint16_t probes; ++ uint16_t resize; ++}; ++ ++struct ip_set_req_nethash { ++ ip_set_ip_t ip; ++ unsigned char cidr; ++}; ++ ++static unsigned char shifts[] = {255, 253, 249, 241, 225, 193, 129, 1}; ++ ++static inline ip_set_ip_t ++pack(ip_set_ip_t ip, unsigned char cidr) ++{ ++ ip_set_ip_t addr, *paddr = &addr; ++ unsigned char n, t, *a; ++ ++ addr = htonl(ip & (0xFFFFFFFF << (32 - (cidr)))); ++#ifdef __KERNEL__ ++ DP("ip:%u.%u.%u.%u/%u", NIPQUAD(addr), cidr); ++#endif ++ n = cidr / 8; ++ t = cidr % 8; ++ a = &((unsigned char *)paddr)[n]; ++ *a = *a /(1 << (8 - t)) + shifts[t]; ++#ifdef __KERNEL__ ++ DP("n: %u, t: %u, a: %u", n, t, *a); ++ DP("ip:%u.%u.%u.%u/%u, %u.%u.%u.%u", ++ HIPQUAD(ip), cidr, NIPQUAD(addr)); ++#endif ++ ++ return ntohl(addr); ++} ++ ++#endif /* __IP_SET_NETHASH_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_portmap.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_portmap.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ip_set_portmap.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ip_set_portmap.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,25 @@ ++#ifndef __IP_SET_PORTMAP_H ++#define __IP_SET_PORTMAP_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++#define SETTYPE_NAME "portmap" ++#define MAX_RANGE 0x0000FFFF ++#define INVALID_PORT (MAX_RANGE + 1) ++ ++struct ip_set_portmap { ++ void *members; /* the portmap proper */ ++ ip_set_ip_t first_port; /* host byte order, included in range */ ++ ip_set_ip_t last_port; /* host byte order, included in range */ ++}; ++ ++struct ip_set_req_portmap_create { ++ ip_set_ip_t from; ++ ip_set_ip_t to; ++}; ++ ++struct ip_set_req_portmap { ++ ip_set_ip_t port; ++}; ++ ++#endif /* __IP_SET_PORTMAP_H */ +diff -ruN linux-2.6.21.1/include/linux/netfilter_ipv4/ipt_set.h linux-2.6.21.1.new/include/linux/netfilter_ipv4/ipt_set.h +--- linux-2.6.21.1/include/linux/netfilter_ipv4/ipt_set.h 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/include/linux/netfilter_ipv4/ipt_set.h 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,21 @@ ++#ifndef _IPT_SET_H ++#define _IPT_SET_H ++ ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++struct ipt_set_info { ++ ip_set_id_t index; ++ u_int32_t flags[IP_SET_MAX_BINDINGS + 1]; ++}; ++ ++/* match info */ ++struct ipt_set_info_match { ++ struct ipt_set_info match_set; ++}; ++ ++struct ipt_set_info_target { ++ struct ipt_set_info add_set; ++ struct ipt_set_info del_set; ++}; ++ ++#endif /*_IPT_SET_H*/ +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set.c 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,2001 @@ ++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> ++ * Patrick Schaaf <bof@bof.de> ++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module for IP set management */ ++ ++#include <linux/version.h> ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++#include <linux/config.h> ++#endif ++#include <linux/module.h> ++#include <linux/moduleparam.h> ++#include <linux/kmod.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/random.h> ++#include <linux/jhash.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <asm/semaphore.h> ++#include <linux/spinlock.h> ++#include <linux/vmalloc.h> ++ ++#define ASSERT_READ_LOCK(x) ++#define ASSERT_WRITE_LOCK(x) ++#include <linux/netfilter_ipv4/ip_set.h> ++ ++static struct list_head set_type_list; /* all registered sets */ ++static struct ip_set **ip_set_list; /* all individual sets */ ++static DEFINE_RWLOCK(ip_set_lock); /* protects the lists and the hash */ ++static DECLARE_MUTEX(ip_set_app_mutex); /* serializes user access */ ++static ip_set_id_t ip_set_max = CONFIG_IP_NF_SET_MAX; ++static ip_set_id_t ip_set_bindings_hash_size = CONFIG_IP_NF_SET_HASHSIZE; ++static struct list_head *ip_set_hash; /* hash of bindings */ ++static unsigned int ip_set_hash_random; /* random seed */ ++ ++/* ++ * Sets are identified either by the index in ip_set_list or by id. ++ * The id never changes and is used to find a key in the hash. ++ * The index may change by swapping and used at all other places ++ * (set/SET netfilter modules, binding value, etc.) ++ * ++ * Userspace requests are serialized by ip_set_mutex and sets can ++ * be deleted only from userspace. Therefore ip_set_list locking ++ * must obey the following rules: ++ * ++ * - kernel requests: read and write locking mandatory ++ * - user requests: read locking optional, write locking mandatory ++ */ ++ ++static inline void ++__ip_set_get(ip_set_id_t index) ++{ ++ atomic_inc(&ip_set_list[index]->ref); ++} ++ ++static inline void ++__ip_set_put(ip_set_id_t index) ++{ ++ atomic_dec(&ip_set_list[index]->ref); ++} ++ ++/* ++ * Binding routines ++ */ ++ ++static inline struct ip_set_hash * ++__ip_set_find(u_int32_t key, ip_set_id_t id, ip_set_ip_t ip) ++{ ++ struct ip_set_hash *set_hash; ++ ++ list_for_each_entry(set_hash, &ip_set_hash[key], list) ++ if (set_hash->id == id && set_hash->ip == ip) ++ return set_hash; ++ ++ return NULL; ++} ++ ++static ip_set_id_t ++ip_set_find_in_hash(ip_set_id_t id, ip_set_ip_t ip) ++{ ++ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random) ++ % ip_set_bindings_hash_size; ++ struct ip_set_hash *set_hash; ++ ++ ASSERT_READ_LOCK(&ip_set_lock); ++ IP_SET_ASSERT(ip_set_list[id]); ++ DP("set: %s, ip: %u.%u.%u.%u", ip_set_list[id]->name, HIPQUAD(ip)); ++ ++ set_hash = __ip_set_find(key, id, ip); ++ ++ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name, ++ HIPQUAD(ip), ++ set_hash != NULL ? ip_set_list[set_hash->binding]->name : ""); ++ ++ return (set_hash != NULL ? set_hash->binding : IP_SET_INVALID_ID); ++} ++ ++static inline void ++__set_hash_del(struct ip_set_hash *set_hash) ++{ ++ ASSERT_WRITE_LOCK(&ip_set_lock); ++ IP_SET_ASSERT(ip_set_list[set_hash->binding]); ++ ++ __ip_set_put(set_hash->binding); ++ list_del(&set_hash->list); ++ kfree(set_hash); ++} ++ ++static int ++ip_set_hash_del(ip_set_id_t id, ip_set_ip_t ip) ++{ ++ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random) ++ % ip_set_bindings_hash_size; ++ struct ip_set_hash *set_hash; ++ ++ IP_SET_ASSERT(ip_set_list[id]); ++ DP("set: %s, ip: %u.%u.%u.%u", ip_set_list[id]->name, HIPQUAD(ip)); ++ write_lock_bh(&ip_set_lock); ++ set_hash = __ip_set_find(key, id, ip); ++ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name, ++ HIPQUAD(ip), ++ set_hash != NULL ? ip_set_list[set_hash->binding]->name : ""); ++ ++ if (set_hash != NULL) ++ __set_hash_del(set_hash); ++ write_unlock_bh(&ip_set_lock); ++ return 0; ++} ++ ++static int ++ip_set_hash_add(ip_set_id_t id, ip_set_ip_t ip, ip_set_id_t binding) ++{ ++ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random) ++ % ip_set_bindings_hash_size; ++ struct ip_set_hash *set_hash; ++ int ret = 0; ++ ++ IP_SET_ASSERT(ip_set_list[id]); ++ IP_SET_ASSERT(ip_set_list[binding]); ++ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name, ++ HIPQUAD(ip), ip_set_list[binding]->name); ++ write_lock_bh(&ip_set_lock); ++ set_hash = __ip_set_find(key, id, ip); ++ if (!set_hash) { ++ set_hash = kmalloc(sizeof(struct ip_set_hash), GFP_ATOMIC); ++ if (!set_hash) { ++ ret = -ENOMEM; ++ goto unlock; ++ } ++ INIT_LIST_HEAD(&set_hash->list); ++ set_hash->id = id; ++ set_hash->ip = ip; ++ list_add(&set_hash->list, &ip_set_hash[key]); ++ } else { ++ IP_SET_ASSERT(ip_set_list[set_hash->binding]); ++ DP("overwrite binding: %s", ++ ip_set_list[set_hash->binding]->name); ++ __ip_set_put(set_hash->binding); ++ } ++ set_hash->binding = binding; ++ __ip_set_get(set_hash->binding); ++ DP("stored: key %u, id %u (%s), ip %u.%u.%u.%u, binding %u (%s)", ++ key, id, ip_set_list[id]->name, ++ HIPQUAD(ip), binding, ip_set_list[binding]->name); ++ unlock: ++ write_unlock_bh(&ip_set_lock); ++ return ret; ++} ++ ++#define FOREACH_HASH_DO(fn, args...) \ ++({ \ ++ ip_set_id_t __key; \ ++ struct ip_set_hash *__set_hash; \ ++ \ ++ for (__key = 0; __key < ip_set_bindings_hash_size; __key++) { \ ++ list_for_each_entry(__set_hash, &ip_set_hash[__key], list) \ ++ fn(__set_hash , ## args); \ ++ } \ ++}) ++ ++#define FOREACH_HASH_RW_DO(fn, args...) \ ++({ \ ++ ip_set_id_t __key; \ ++ struct ip_set_hash *__set_hash, *__n; \ ++ \ ++ ASSERT_WRITE_LOCK(&ip_set_lock); \ ++ for (__key = 0; __key < ip_set_bindings_hash_size; __key++) { \ ++ list_for_each_entry_safe(__set_hash, __n, &ip_set_hash[__key], list)\ ++ fn(__set_hash , ## args); \ ++ } \ ++}) ++ ++/* Add, del and test set entries from kernel */ ++ ++#define follow_bindings(index, set, ip) \ ++((index = ip_set_find_in_hash((set)->id, ip)) != IP_SET_INVALID_ID \ ++ || (index = (set)->binding) != IP_SET_INVALID_ID) ++ ++int ++ip_set_testip_kernel(ip_set_id_t index, ++ const struct sk_buff *skb, ++ const u_int32_t *flags) ++{ ++ struct ip_set *set; ++ ip_set_ip_t ip; ++ int res; ++ unsigned char i = 0; ++ ++ IP_SET_ASSERT(flags[i]); ++ read_lock_bh(&ip_set_lock); ++ do { ++ set = ip_set_list[index]; ++ IP_SET_ASSERT(set); ++ DP("set %s, index %u", set->name, index); ++ read_lock_bh(&set->lock); ++ res = set->type->testip_kernel(set, skb, &ip, flags, i++); ++ read_unlock_bh(&set->lock); ++ i += !!(set->type->features & IPSET_DATA_DOUBLE); ++ } while (res > 0 ++ && flags[i] ++ && follow_bindings(index, set, ip)); ++ read_unlock_bh(&ip_set_lock); ++ ++ return res; ++} ++ ++void ++ip_set_addip_kernel(ip_set_id_t index, ++ const struct sk_buff *skb, ++ const u_int32_t *flags) ++{ ++ struct ip_set *set; ++ ip_set_ip_t ip; ++ int res; ++ unsigned char i = 0; ++ ++ IP_SET_ASSERT(flags[i]); ++ retry: ++ read_lock_bh(&ip_set_lock); ++ do { ++ set = ip_set_list[index]; ++ IP_SET_ASSERT(set); ++ DP("set %s, index %u", set->name, index); ++ write_lock_bh(&set->lock); ++ res = set->type->addip_kernel(set, skb, &ip, flags, i++); ++ write_unlock_bh(&set->lock); ++ i += !!(set->type->features & IPSET_DATA_DOUBLE); ++ } while ((res == 0 || res == -EEXIST) ++ && flags[i] ++ && follow_bindings(index, set, ip)); ++ read_unlock_bh(&ip_set_lock); ++ ++ if (res == -EAGAIN ++ && set->type->retry ++ && (res = set->type->retry(set)) == 0) ++ goto retry; ++} ++ ++void ++ip_set_delip_kernel(ip_set_id_t index, ++ const struct sk_buff *skb, ++ const u_int32_t *flags) ++{ ++ struct ip_set *set; ++ ip_set_ip_t ip; ++ int res; ++ unsigned char i = 0; ++ ++ IP_SET_ASSERT(flags[i]); ++ read_lock_bh(&ip_set_lock); ++ do { ++ set = ip_set_list[index]; ++ IP_SET_ASSERT(set); ++ DP("set %s, index %u", set->name, index); ++ write_lock_bh(&set->lock); ++ res = set->type->delip_kernel(set, skb, &ip, flags, i++); ++ write_unlock_bh(&set->lock); ++ i += !!(set->type->features & IPSET_DATA_DOUBLE); ++ } while ((res == 0 || res == -EEXIST) ++ && flags[i] ++ && follow_bindings(index, set, ip)); ++ read_unlock_bh(&ip_set_lock); ++} ++ ++/* Register and deregister settype */ ++ ++static inline struct ip_set_type * ++find_set_type(const char *name) ++{ ++ struct ip_set_type *set_type; ++ ++ list_for_each_entry(set_type, &set_type_list, list) ++ if (!strncmp(set_type->typename, name, IP_SET_MAXNAMELEN - 1)) ++ return set_type; ++ return NULL; ++} ++ ++int ++ip_set_register_set_type(struct ip_set_type *set_type) ++{ ++ int ret = 0; ++ ++ if (set_type->protocol_version != IP_SET_PROTOCOL_VERSION) { ++ ip_set_printk("'%s' uses wrong protocol version %u (want %u)", ++ set_type->typename, ++ set_type->protocol_version, ++ IP_SET_PROTOCOL_VERSION); ++ return -EINVAL; ++ } ++ ++ write_lock_bh(&ip_set_lock); ++ if (find_set_type(set_type->typename)) { ++ /* Duplicate! */ ++ ip_set_printk("'%s' already registered!", ++ set_type->typename); ++ ret = -EINVAL; ++ goto unlock; ++ } ++ if (!try_module_get(THIS_MODULE)) { ++ ret = -EFAULT; ++ goto unlock; ++ } ++ list_add(&set_type->list, &set_type_list); ++ DP("'%s' registered.", set_type->typename); ++ unlock: ++ write_unlock_bh(&ip_set_lock); ++ return ret; ++} ++ ++void ++ip_set_unregister_set_type(struct ip_set_type *set_type) ++{ ++ write_lock_bh(&ip_set_lock); ++ if (!find_set_type(set_type->typename)) { ++ ip_set_printk("'%s' not registered?", ++ set_type->typename); ++ goto unlock; ++ } ++ list_del(&set_type->list); ++ module_put(THIS_MODULE); ++ DP("'%s' unregistered.", set_type->typename); ++ unlock: ++ write_unlock_bh(&ip_set_lock); ++ ++} ++ ++/* ++ * Userspace routines ++ */ ++ ++/* ++ * Find set by name, reference it once. The reference makes sure the ++ * thing pointed to, does not go away under our feet. Drop the reference ++ * later, using ip_set_put(). ++ */ ++ip_set_id_t ++ip_set_get_byname(const char *name) ++{ ++ ip_set_id_t i, index = IP_SET_INVALID_ID; ++ ++ down(&ip_set_app_mutex); ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL ++ && strcmp(ip_set_list[i]->name, name) == 0) { ++ __ip_set_get(i); ++ index = i; ++ break; ++ } ++ } ++ up(&ip_set_app_mutex); ++ return index; ++} ++ ++/* ++ * Find set by index, reference it once. The reference makes sure the ++ * thing pointed to, does not go away under our feet. Drop the reference ++ * later, using ip_set_put(). ++ */ ++ip_set_id_t ++ip_set_get_byindex(ip_set_id_t index) ++{ ++ down(&ip_set_app_mutex); ++ ++ if (index >= ip_set_max) ++ return IP_SET_INVALID_ID; ++ ++ if (ip_set_list[index]) ++ __ip_set_get(index); ++ else ++ index = IP_SET_INVALID_ID; ++ ++ up(&ip_set_app_mutex); ++ return index; ++} ++ ++/* ++ * If the given set pointer points to a valid set, decrement ++ * reference count by 1. The caller shall not assume the index ++ * to be valid, after calling this function. ++ */ ++void ip_set_put(ip_set_id_t index) ++{ ++ down(&ip_set_app_mutex); ++ if (ip_set_list[index]) ++ __ip_set_put(index); ++ up(&ip_set_app_mutex); ++} ++ ++/* Find a set by name or index */ ++static ip_set_id_t ++ip_set_find_byname(const char *name) ++{ ++ ip_set_id_t i, index = IP_SET_INVALID_ID; ++ ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL ++ && strcmp(ip_set_list[i]->name, name) == 0) { ++ index = i; ++ break; ++ } ++ } ++ return index; ++} ++ ++static ip_set_id_t ++ip_set_find_byindex(ip_set_id_t index) ++{ ++ if (index >= ip_set_max || ip_set_list[index] == NULL) ++ index = IP_SET_INVALID_ID; ++ ++ return index; ++} ++ ++/* ++ * Add, del, test, bind and unbind ++ */ ++ ++static inline int ++__ip_set_testip(struct ip_set *set, ++ const void *data, ++ size_t size, ++ ip_set_ip_t *ip) ++{ ++ int res; ++ ++ read_lock_bh(&set->lock); ++ res = set->type->testip(set, data, size, ip); ++ read_unlock_bh(&set->lock); ++ ++ return res; ++} ++ ++static int ++__ip_set_addip(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ ip_set_ip_t ip; ++ int res; ++ ++ IP_SET_ASSERT(set); ++ do { ++ write_lock_bh(&set->lock); ++ res = set->type->addip(set, data, size, &ip); ++ write_unlock_bh(&set->lock); ++ } while (res == -EAGAIN ++ && set->type->retry ++ && (res = set->type->retry(set)) == 0); ++ ++ return res; ++} ++ ++static int ++ip_set_addip(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ ++ return __ip_set_addip(index, ++ data + sizeof(struct ip_set_req_adt), ++ size - sizeof(struct ip_set_req_adt)); ++} ++ ++static int ++ip_set_delip(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ ip_set_ip_t ip; ++ int res; ++ ++ IP_SET_ASSERT(set); ++ write_lock_bh(&set->lock); ++ res = set->type->delip(set, ++ data + sizeof(struct ip_set_req_adt), ++ size - sizeof(struct ip_set_req_adt), ++ &ip); ++ write_unlock_bh(&set->lock); ++ ++ return res; ++} ++ ++static int ++ip_set_testip(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ ip_set_ip_t ip; ++ int res; ++ ++ IP_SET_ASSERT(set); ++ res = __ip_set_testip(set, ++ data + sizeof(struct ip_set_req_adt), ++ size - sizeof(struct ip_set_req_adt), ++ &ip); ++ ++ return (res > 0 ? -EEXIST : res); ++} ++ ++static int ++ip_set_bindip(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ struct ip_set_req_bind *req_bind; ++ ip_set_id_t binding; ++ ip_set_ip_t ip; ++ int res; ++ ++ IP_SET_ASSERT(set); ++ if (size < sizeof(struct ip_set_req_bind)) ++ return -EINVAL; ++ ++ req_bind = (struct ip_set_req_bind *) data; ++ req_bind->binding[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) { ++ /* Default binding of a set */ ++ char *binding_name; ++ ++ if (size != sizeof(struct ip_set_req_bind) + IP_SET_MAXNAMELEN) ++ return -EINVAL; ++ ++ binding_name = (char *)(data + sizeof(struct ip_set_req_bind)); ++ binding_name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ binding = ip_set_find_byname(binding_name); ++ if (binding == IP_SET_INVALID_ID) ++ return -ENOENT; ++ ++ write_lock_bh(&ip_set_lock); ++ /* Sets as binding values are referenced */ ++ if (set->binding != IP_SET_INVALID_ID) ++ __ip_set_put(set->binding); ++ set->binding = binding; ++ __ip_set_get(set->binding); ++ write_unlock_bh(&ip_set_lock); ++ ++ return 0; ++ } ++ binding = ip_set_find_byname(req_bind->binding); ++ if (binding == IP_SET_INVALID_ID) ++ return -ENOENT; ++ ++ res = __ip_set_testip(set, ++ data + sizeof(struct ip_set_req_bind), ++ size - sizeof(struct ip_set_req_bind), ++ &ip); ++ DP("set %s, ip: %u.%u.%u.%u, binding %s", ++ set->name, HIPQUAD(ip), ip_set_list[binding]->name); ++ ++ if (res >= 0) ++ res = ip_set_hash_add(set->id, ip, binding); ++ ++ return res; ++} ++ ++#define FOREACH_SET_DO(fn, args...) \ ++({ \ ++ ip_set_id_t __i; \ ++ struct ip_set *__set; \ ++ \ ++ for (__i = 0; __i < ip_set_max; __i++) { \ ++ __set = ip_set_list[__i]; \ ++ if (__set != NULL) \ ++ fn(__set , ##args); \ ++ } \ ++}) ++ ++static inline void ++__set_hash_del_byid(struct ip_set_hash *set_hash, ip_set_id_t id) ++{ ++ if (set_hash->id == id) ++ __set_hash_del(set_hash); ++} ++ ++static inline void ++__unbind_default(struct ip_set *set) ++{ ++ if (set->binding != IP_SET_INVALID_ID) { ++ /* Sets as binding values are referenced */ ++ __ip_set_put(set->binding); ++ set->binding = IP_SET_INVALID_ID; ++ } ++} ++ ++static int ++ip_set_unbindip(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set; ++ struct ip_set_req_bind *req_bind; ++ ip_set_ip_t ip; ++ int res; ++ ++ DP(""); ++ if (size < sizeof(struct ip_set_req_bind)) ++ return -EINVAL; ++ ++ req_bind = (struct ip_set_req_bind *) data; ++ req_bind->binding[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ DP("%u %s", index, req_bind->binding); ++ if (index == IP_SET_INVALID_ID) { ++ /* unbind :all: */ ++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) { ++ /* Default binding of sets */ ++ write_lock_bh(&ip_set_lock); ++ FOREACH_SET_DO(__unbind_default); ++ write_unlock_bh(&ip_set_lock); ++ return 0; ++ } else if (strcmp(req_bind->binding, IPSET_TOKEN_ALL) == 0) { ++ /* Flush all bindings of all sets*/ ++ write_lock_bh(&ip_set_lock); ++ FOREACH_HASH_RW_DO(__set_hash_del); ++ write_unlock_bh(&ip_set_lock); ++ return 0; ++ } ++ DP("unreachable reached!"); ++ return -EINVAL; ++ } ++ ++ set = ip_set_list[index]; ++ IP_SET_ASSERT(set); ++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) { ++ /* Default binding of set */ ++ ip_set_id_t binding = ip_set_find_byindex(set->binding); ++ ++ if (binding == IP_SET_INVALID_ID) ++ return -ENOENT; ++ ++ write_lock_bh(&ip_set_lock); ++ /* Sets in hash values are referenced */ ++ __ip_set_put(set->binding); ++ set->binding = IP_SET_INVALID_ID; ++ write_unlock_bh(&ip_set_lock); ++ ++ return 0; ++ } else if (strcmp(req_bind->binding, IPSET_TOKEN_ALL) == 0) { ++ /* Flush all bindings */ ++ ++ write_lock_bh(&ip_set_lock); ++ FOREACH_HASH_RW_DO(__set_hash_del_byid, set->id); ++ write_unlock_bh(&ip_set_lock); ++ return 0; ++ } ++ ++ res = __ip_set_testip(set, ++ data + sizeof(struct ip_set_req_bind), ++ size - sizeof(struct ip_set_req_bind), ++ &ip); ++ ++ DP("set %s, ip: %u.%u.%u.%u", set->name, HIPQUAD(ip)); ++ if (res >= 0) ++ res = ip_set_hash_del(set->id, ip); ++ ++ return res; ++} ++ ++static int ++ip_set_testbind(ip_set_id_t index, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ struct ip_set_req_bind *req_bind; ++ ip_set_id_t binding; ++ ip_set_ip_t ip; ++ int res; ++ ++ IP_SET_ASSERT(set); ++ if (size < sizeof(struct ip_set_req_bind)) ++ return -EINVAL; ++ ++ req_bind = (struct ip_set_req_bind *) data; ++ req_bind->binding[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) { ++ /* Default binding of set */ ++ char *binding_name; ++ ++ if (size != sizeof(struct ip_set_req_bind) + IP_SET_MAXNAMELEN) ++ return -EINVAL; ++ ++ binding_name = (char *)(data + sizeof(struct ip_set_req_bind)); ++ binding_name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ binding = ip_set_find_byname(binding_name); ++ if (binding == IP_SET_INVALID_ID) ++ return -ENOENT; ++ ++ res = (set->binding == binding) ? -EEXIST : 0; ++ ++ return res; ++ } ++ binding = ip_set_find_byname(req_bind->binding); ++ if (binding == IP_SET_INVALID_ID) ++ return -ENOENT; ++ ++ ++ res = __ip_set_testip(set, ++ data + sizeof(struct ip_set_req_bind), ++ size - sizeof(struct ip_set_req_bind), ++ &ip); ++ DP("set %s, ip: %u.%u.%u.%u, binding %s", ++ set->name, HIPQUAD(ip), ip_set_list[binding]->name); ++ ++ if (res >= 0) ++ res = (ip_set_find_in_hash(set->id, ip) == binding) ++ ? -EEXIST : 0; ++ ++ return res; ++} ++ ++static struct ip_set_type * ++find_set_type_rlock(const char *typename) ++{ ++ struct ip_set_type *type; ++ ++ read_lock_bh(&ip_set_lock); ++ type = find_set_type(typename); ++ if (type == NULL) ++ read_unlock_bh(&ip_set_lock); ++ ++ return type; ++} ++ ++static int ++find_free_id(const char *name, ++ ip_set_id_t *index, ++ ip_set_id_t *id) ++{ ++ ip_set_id_t i; ++ ++ *id = IP_SET_INVALID_ID; ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] == NULL) { ++ if (*id == IP_SET_INVALID_ID) ++ *id = *index = i; ++ } else if (strcmp(name, ip_set_list[i]->name) == 0) ++ /* Name clash */ ++ return -EEXIST; ++ } ++ if (*id == IP_SET_INVALID_ID) ++ /* No free slot remained */ ++ return -ERANGE; ++ /* Check that index is usable as id (swapping) */ ++ check: ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL ++ && ip_set_list[i]->id == *id) { ++ *id = i; ++ goto check; ++ } ++ } ++ return 0; ++} ++ ++/* ++ * Create a set ++ */ ++static int ++ip_set_create(const char *name, ++ const char *typename, ++ ip_set_id_t restore, ++ const void *data, ++ size_t size) ++{ ++ struct ip_set *set; ++ ip_set_id_t index = 0, id; ++ int res = 0; ++ ++ DP("setname: %s, typename: %s, id: %u", name, typename, restore); ++ /* ++ * First, and without any locks, allocate and initialize ++ * a normal base set structure. ++ */ ++ set = kmalloc(sizeof(struct ip_set), GFP_KERNEL); ++ if (!set) ++ return -ENOMEM; ++ set->lock = RW_LOCK_UNLOCKED; ++ strncpy(set->name, name, IP_SET_MAXNAMELEN); ++ set->binding = IP_SET_INVALID_ID; ++ atomic_set(&set->ref, 0); ++ ++ /* ++ * Next, take the &ip_set_lock, check that we know the type, ++ * and take a reference on the type, to make sure it ++ * stays available while constructing our new set. ++ * ++ * After referencing the type, we drop the &ip_set_lock, ++ * and let the new set construction run without locks. ++ */ ++ set->type = find_set_type_rlock(typename); ++ if (set->type == NULL) { ++ /* Try loading the module */ ++ char modulename[IP_SET_MAXNAMELEN + strlen("ip_set_") + 1]; ++ strcpy(modulename, "ip_set_"); ++ strcat(modulename, typename); ++ DP("try to load %s", modulename); ++ request_module(modulename); ++ set->type = find_set_type_rlock(typename); ++ } ++ if (set->type == NULL) { ++ ip_set_printk("no set type '%s', set '%s' not created", ++ typename, name); ++ res = -ENOENT; ++ goto out; ++ } ++ if (!try_module_get(set->type->me)) { ++ read_unlock_bh(&ip_set_lock); ++ res = -EFAULT; ++ goto out; ++ } ++ read_unlock_bh(&ip_set_lock); ++ ++ /* ++ * Without holding any locks, create private part. ++ */ ++ res = set->type->create(set, data, size); ++ if (res != 0) ++ goto put_out; ++ ++ /* BTW, res==0 here. */ ++ ++ /* ++ * Here, we have a valid, constructed set. &ip_set_lock again, ++ * find free id/index and check that it is not already in ++ * ip_set_list. ++ */ ++ write_lock_bh(&ip_set_lock); ++ if ((res = find_free_id(set->name, &index, &id)) != 0) { ++ DP("no free id!"); ++ goto cleanup; ++ } ++ ++ /* Make sure restore gets the same index */ ++ if (restore != IP_SET_INVALID_ID && index != restore) { ++ DP("Can't restore, sets are screwed up"); ++ res = -ERANGE; ++ goto cleanup; ++ } ++ ++ /* ++ * Finally! Add our shiny new set to the list, and be done. ++ */ ++ DP("create: '%s' created with index %u, id %u!", set->name, index, id); ++ set->id = id; ++ ip_set_list[index] = set; ++ write_unlock_bh(&ip_set_lock); ++ return res; ++ ++ cleanup: ++ write_unlock_bh(&ip_set_lock); ++ set->type->destroy(set); ++ put_out: ++ module_put(set->type->me); ++ out: ++ kfree(set); ++ return res; ++} ++ ++/* ++ * Destroy a given existing set ++ */ ++static void ++ip_set_destroy_set(ip_set_id_t index) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ ++ IP_SET_ASSERT(set); ++ DP("set: %s", set->name); ++ write_lock_bh(&ip_set_lock); ++ FOREACH_HASH_RW_DO(__set_hash_del_byid, set->id); ++ if (set->binding != IP_SET_INVALID_ID) ++ __ip_set_put(set->binding); ++ ip_set_list[index] = NULL; ++ write_unlock_bh(&ip_set_lock); ++ ++ /* Must call it without holding any lock */ ++ set->type->destroy(set); ++ module_put(set->type->me); ++ kfree(set); ++} ++ ++/* ++ * Destroy a set - or all sets ++ * Sets must not be referenced/used. ++ */ ++static int ++ip_set_destroy(ip_set_id_t index) ++{ ++ ip_set_id_t i; ++ ++ /* ref modification always protected by the mutex */ ++ if (index != IP_SET_INVALID_ID) { ++ if (atomic_read(&ip_set_list[index]->ref)) ++ return -EBUSY; ++ ip_set_destroy_set(index); ++ } else { ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL ++ && (atomic_read(&ip_set_list[i]->ref))) ++ return -EBUSY; ++ } ++ ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL) ++ ip_set_destroy_set(i); ++ } ++ } ++ return 0; ++} ++ ++static void ++ip_set_flush_set(struct ip_set *set) ++{ ++ DP("set: %s %u", set->name, set->id); ++ ++ write_lock_bh(&set->lock); ++ set->type->flush(set); ++ write_unlock_bh(&set->lock); ++} ++ ++/* ++ * Flush data in a set - or in all sets ++ */ ++static int ++ip_set_flush(ip_set_id_t index) ++{ ++ if (index != IP_SET_INVALID_ID) { ++ IP_SET_ASSERT(ip_set_list[index]); ++ ip_set_flush_set(ip_set_list[index]); ++ } else ++ FOREACH_SET_DO(ip_set_flush_set); ++ ++ return 0; ++} ++ ++/* Rename a set */ ++static int ++ip_set_rename(ip_set_id_t index, const char *name) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ ip_set_id_t i; ++ int res = 0; ++ ++ DP("set: %s to %s", set->name, name); ++ write_lock_bh(&ip_set_lock); ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL ++ && strncmp(ip_set_list[i]->name, ++ name, ++ IP_SET_MAXNAMELEN - 1) == 0) { ++ res = -EEXIST; ++ goto unlock; ++ } ++ } ++ strncpy(set->name, name, IP_SET_MAXNAMELEN); ++ unlock: ++ write_unlock_bh(&ip_set_lock); ++ return res; ++} ++ ++/* ++ * Swap two sets so that name/index points to the other. ++ * References are also swapped. ++ */ ++static int ++ip_set_swap(ip_set_id_t from_index, ip_set_id_t to_index) ++{ ++ struct ip_set *from = ip_set_list[from_index]; ++ struct ip_set *to = ip_set_list[to_index]; ++ char from_name[IP_SET_MAXNAMELEN]; ++ u_int32_t from_ref; ++ ++ DP("set: %s to %s", from->name, to->name); ++ /* Features must not change. Artifical restriction. */ ++ if (from->type->features != to->type->features) ++ return -ENOEXEC; ++ ++ /* No magic here: ref munging protected by the mutex */ ++ write_lock_bh(&ip_set_lock); ++ strncpy(from_name, from->name, IP_SET_MAXNAMELEN); ++ from_ref = atomic_read(&from->ref); ++ ++ strncpy(from->name, to->name, IP_SET_MAXNAMELEN); ++ atomic_set(&from->ref, atomic_read(&to->ref)); ++ strncpy(to->name, from_name, IP_SET_MAXNAMELEN); ++ atomic_set(&to->ref, from_ref); ++ ++ ip_set_list[from_index] = to; ++ ip_set_list[to_index] = from; ++ ++ write_unlock_bh(&ip_set_lock); ++ return 0; ++} ++ ++/* ++ * List set data ++ */ ++ ++static inline void ++__set_hash_bindings_size_list(struct ip_set_hash *set_hash, ++ ip_set_id_t id, size_t *size) ++{ ++ if (set_hash->id == id) ++ *size += sizeof(struct ip_set_hash_list); ++} ++ ++static inline void ++__set_hash_bindings_size_save(struct ip_set_hash *set_hash, ++ ip_set_id_t id, size_t *size) ++{ ++ if (set_hash->id == id) ++ *size += sizeof(struct ip_set_hash_save); ++} ++ ++static inline void ++__set_hash_bindings(struct ip_set_hash *set_hash, ++ ip_set_id_t id, void *data, int *used) ++{ ++ if (set_hash->id == id) { ++ struct ip_set_hash_list *hash_list = ++ (struct ip_set_hash_list *)(data + *used); ++ ++ hash_list->ip = set_hash->ip; ++ hash_list->binding = set_hash->binding; ++ *used += sizeof(struct ip_set_hash_list); ++ } ++} ++ ++static int ip_set_list_set(ip_set_id_t index, ++ void *data, ++ int *used, ++ int len) ++{ ++ struct ip_set *set = ip_set_list[index]; ++ struct ip_set_list *set_list; ++ ++ /* Pointer to our header */ ++ set_list = (struct ip_set_list *) (data + *used); ++ ++ DP("set: %s, used: %d %p %p", set->name, *used, data, data + *used); ++ ++ /* Get and ensure header size */ ++ if (*used + sizeof(struct ip_set_list) > len) ++ goto not_enough_mem; ++ *used += sizeof(struct ip_set_list); ++ ++ read_lock_bh(&set->lock); ++ /* Get and ensure set specific header size */ ++ set_list->header_size = set->type->header_size; ++ if (*used + set_list->header_size > len) ++ goto unlock_set; ++ ++ /* Fill in the header */ ++ set_list->index = index; ++ set_list->binding = set->binding; ++ set_list->ref = atomic_read(&set->ref); ++ ++ /* Fill in set spefific header data */ ++ set->type->list_header(set, data + *used); ++ *used += set_list->header_size; ++ ++ /* Get and ensure set specific members size */ ++ set_list->members_size = set->type->list_members_size(set); ++ if (*used + set_list->members_size > len) ++ goto unlock_set; ++ ++ /* Fill in set spefific members data */ ++ set->type->list_members(set, data + *used); ++ *used += set_list->members_size; ++ read_unlock_bh(&set->lock); ++ ++ /* Bindings */ ++ ++ /* Get and ensure set specific bindings size */ ++ set_list->bindings_size = 0; ++ FOREACH_HASH_DO(__set_hash_bindings_size_list, ++ set->id, &set_list->bindings_size); ++ if (*used + set_list->bindings_size > len) ++ goto not_enough_mem; ++ ++ /* Fill in set spefific bindings data */ ++ FOREACH_HASH_DO(__set_hash_bindings, set->id, data, used); ++ ++ return 0; ++ ++ unlock_set: ++ read_unlock_bh(&set->lock); ++ not_enough_mem: ++ DP("not enough mem, try again"); ++ return -EAGAIN; ++} ++ ++/* ++ * Save sets ++ */ ++static int ip_set_save_set(ip_set_id_t index, ++ void *data, ++ int *used, ++ int len) ++{ ++ struct ip_set *set; ++ struct ip_set_save *set_save; ++ ++ /* Pointer to our header */ ++ set_save = (struct ip_set_save *) (data + *used); ++ ++ /* Get and ensure header size */ ++ if (*used + sizeof(struct ip_set_save) > len) ++ goto not_enough_mem; ++ *used += sizeof(struct ip_set_save); ++ ++ set = ip_set_list[index]; ++ DP("set: %s, used: %u(%u) %p %p", set->name, *used, len, ++ data, data + *used); ++ ++ read_lock_bh(&set->lock); ++ /* Get and ensure set specific header size */ ++ set_save->header_size = set->type->header_size; ++ if (*used + set_save->header_size > len) ++ goto unlock_set; ++ ++ /* Fill in the header */ ++ set_save->index = index; ++ set_save->binding = set->binding; ++ ++ /* Fill in set spefific header data */ ++ set->type->list_header(set, data + *used); ++ *used += set_save->header_size; ++ ++ DP("set header filled: %s, used: %u(%u) %p %p", set->name, *used, ++ set_save->header_size, data, data + *used); ++ /* Get and ensure set specific members size */ ++ set_save->members_size = set->type->list_members_size(set); ++ if (*used + set_save->members_size > len) ++ goto unlock_set; ++ ++ /* Fill in set spefific members data */ ++ set->type->list_members(set, data + *used); ++ *used += set_save->members_size; ++ read_unlock_bh(&set->lock); ++ DP("set members filled: %s, used: %u(%u) %p %p", set->name, *used, ++ set_save->members_size, data, data + *used); ++ return 0; ++ ++ unlock_set: ++ read_unlock_bh(&set->lock); ++ not_enough_mem: ++ DP("not enough mem, try again"); ++ return -EAGAIN; ++} ++ ++static inline void ++__set_hash_save_bindings(struct ip_set_hash *set_hash, ++ ip_set_id_t id, ++ void *data, ++ int *used, ++ int len, ++ int *res) ++{ ++ if (*res == 0 ++ && (id == IP_SET_INVALID_ID || set_hash->id == id)) { ++ struct ip_set_hash_save *hash_save = ++ (struct ip_set_hash_save *)(data + *used); ++ /* Ensure bindings size */ ++ if (*used + sizeof(struct ip_set_hash_save) > len) { ++ *res = -ENOMEM; ++ return; ++ } ++ hash_save->id = set_hash->id; ++ hash_save->ip = set_hash->ip; ++ hash_save->binding = set_hash->binding; ++ *used += sizeof(struct ip_set_hash_save); ++ } ++} ++ ++static int ip_set_save_bindings(ip_set_id_t index, ++ void *data, ++ int *used, ++ int len) ++{ ++ int res = 0; ++ struct ip_set_save *set_save; ++ ++ DP("used %u, len %u", *used, len); ++ /* Get and ensure header size */ ++ if (*used + sizeof(struct ip_set_save) > len) ++ return -ENOMEM; ++ ++ /* Marker */ ++ set_save = (struct ip_set_save *) (data + *used); ++ set_save->index = IP_SET_INVALID_ID; ++ set_save->header_size = 0; ++ set_save->members_size = 0; ++ *used += sizeof(struct ip_set_save); ++ ++ DP("marker added used %u, len %u", *used, len); ++ /* Fill in bindings data */ ++ if (index != IP_SET_INVALID_ID) ++ /* Sets are identified by id in hash */ ++ index = ip_set_list[index]->id; ++ FOREACH_HASH_DO(__set_hash_save_bindings, index, data, used, len, &res); ++ ++ return res; ++} ++ ++/* ++ * Restore sets ++ */ ++static int ip_set_restore(void *data, ++ int len) ++{ ++ int res = 0; ++ int line = 0, used = 0, members_size; ++ struct ip_set *set; ++ struct ip_set_hash_save *hash_save; ++ struct ip_set_restore *set_restore; ++ ip_set_id_t index; ++ ++ /* Loop to restore sets */ ++ while (1) { ++ line++; ++ ++ DP("%u %u %u", used, sizeof(struct ip_set_restore), len); ++ /* Get and ensure header size */ ++ if (used + sizeof(struct ip_set_restore) > len) ++ return line; ++ set_restore = (struct ip_set_restore *) (data + used); ++ used += sizeof(struct ip_set_restore); ++ ++ /* Ensure data size */ ++ if (used ++ + set_restore->header_size ++ + set_restore->members_size > len) ++ return line; ++ ++ /* Check marker */ ++ if (set_restore->index == IP_SET_INVALID_ID) { ++ line--; ++ goto bindings; ++ } ++ ++ /* Try to create the set */ ++ DP("restore %s %s", set_restore->name, set_restore->typename); ++ res = ip_set_create(set_restore->name, ++ set_restore->typename, ++ set_restore->index, ++ data + used, ++ set_restore->header_size); ++ ++ if (res != 0) ++ return line; ++ used += set_restore->header_size; ++ ++ index = ip_set_find_byindex(set_restore->index); ++ DP("index %u, restore_index %u", index, set_restore->index); ++ if (index != set_restore->index) ++ return line; ++ /* Try to restore members data */ ++ set = ip_set_list[index]; ++ members_size = 0; ++ DP("members_size %u reqsize %u", ++ set_restore->members_size, set->type->reqsize); ++ while (members_size + set->type->reqsize <= ++ set_restore->members_size) { ++ line++; ++ DP("members: %u, line %u", members_size, line); ++ res = __ip_set_addip(index, ++ data + used + members_size, ++ set->type->reqsize); ++ if (!(res == 0 || res == -EEXIST)) ++ return line; ++ members_size += set->type->reqsize; ++ } ++ ++ DP("members_size %u %u", ++ set_restore->members_size, members_size); ++ if (members_size != set_restore->members_size) ++ return line++; ++ used += set_restore->members_size; ++ } ++ ++ bindings: ++ /* Loop to restore bindings */ ++ while (used < len) { ++ line++; ++ ++ DP("restore binding, line %u", line); ++ /* Get and ensure size */ ++ if (used + sizeof(struct ip_set_hash_save) > len) ++ return line; ++ hash_save = (struct ip_set_hash_save *) (data + used); ++ used += sizeof(struct ip_set_hash_save); ++ ++ /* hash_save->id is used to store the index */ ++ index = ip_set_find_byindex(hash_save->id); ++ DP("restore binding index %u, id %u, %u -> %u", ++ index, hash_save->id, hash_save->ip, hash_save->binding); ++ if (index != hash_save->id) ++ return line; ++ if (ip_set_find_byindex(hash_save->binding) == IP_SET_INVALID_ID) { ++ DP("corrupt binding set index %u", hash_save->binding); ++ return line; ++ } ++ set = ip_set_list[hash_save->id]; ++ /* Null valued IP means default binding */ ++ if (hash_save->ip) ++ res = ip_set_hash_add(set->id, ++ hash_save->ip, ++ hash_save->binding); ++ else { ++ IP_SET_ASSERT(set->binding == IP_SET_INVALID_ID); ++ write_lock_bh(&ip_set_lock); ++ set->binding = hash_save->binding; ++ __ip_set_get(set->binding); ++ write_unlock_bh(&ip_set_lock); ++ DP("default binding: %u", set->binding); ++ } ++ if (res != 0) ++ return line; ++ } ++ if (used != len) ++ return line; ++ ++ return 0; ++} ++ ++static int ++ip_set_sockfn_set(struct sock *sk, int optval, void *user, unsigned int len) ++{ ++ void *data; ++ int res = 0; /* Assume OK */ ++ unsigned *op; ++ struct ip_set_req_adt *req_adt; ++ ip_set_id_t index = IP_SET_INVALID_ID; ++ int (*adtfn)(ip_set_id_t index, ++ const void *data, size_t size); ++ struct fn_table { ++ int (*fn)(ip_set_id_t index, ++ const void *data, size_t size); ++ } adtfn_table[] = ++ { { ip_set_addip }, { ip_set_delip }, { ip_set_testip}, ++ { ip_set_bindip}, { ip_set_unbindip }, { ip_set_testbind }, ++ }; ++ ++ DP("optval=%d, user=%p, len=%d", optval, user, len); ++ if (!capable(CAP_NET_ADMIN)) ++ return -EPERM; ++ if (optval != SO_IP_SET) ++ return -EBADF; ++ if (len <= sizeof(unsigned)) { ++ ip_set_printk("short userdata (want >%zu, got %u)", ++ sizeof(unsigned), len); ++ return -EINVAL; ++ } ++ data = vmalloc(len); ++ if (!data) { ++ DP("out of mem for %u bytes", len); ++ return -ENOMEM; ++ } ++ if (copy_from_user(data, user, len) != 0) { ++ res = -EFAULT; ++ goto done; ++ } ++ if (down_interruptible(&ip_set_app_mutex)) { ++ res = -EINTR; ++ goto done; ++ } ++ ++ op = (unsigned *)data; ++ DP("op=%x", *op); ++ ++ if (*op < IP_SET_OP_VERSION) { ++ /* Check the version at the beginning of operations */ ++ struct ip_set_req_version *req_version = ++ (struct ip_set_req_version *) data; ++ if (req_version->version != IP_SET_PROTOCOL_VERSION) { ++ res = -EPROTO; ++ goto done; ++ } ++ } ++ ++ switch (*op) { ++ case IP_SET_OP_CREATE:{ ++ struct ip_set_req_create *req_create ++ = (struct ip_set_req_create *) data; ++ ++ if (len < sizeof(struct ip_set_req_create)) { ++ ip_set_printk("short CREATE data (want >=%zu, got %u)", ++ sizeof(struct ip_set_req_create), len); ++ res = -EINVAL; ++ goto done; ++ } ++ req_create->name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ req_create->typename[IP_SET_MAXNAMELEN - 1] = '\0'; ++ res = ip_set_create(req_create->name, ++ req_create->typename, ++ IP_SET_INVALID_ID, ++ data + sizeof(struct ip_set_req_create), ++ len - sizeof(struct ip_set_req_create)); ++ goto done; ++ } ++ case IP_SET_OP_DESTROY:{ ++ struct ip_set_req_std *req_destroy ++ = (struct ip_set_req_std *) data; ++ ++ if (len != sizeof(struct ip_set_req_std)) { ++ ip_set_printk("invalid DESTROY data (want %zu, got %u)", ++ sizeof(struct ip_set_req_std), len); ++ res = -EINVAL; ++ goto done; ++ } ++ if (strcmp(req_destroy->name, IPSET_TOKEN_ALL) == 0) { ++ /* Destroy all sets */ ++ index = IP_SET_INVALID_ID; ++ } else { ++ req_destroy->name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ index = ip_set_find_byname(req_destroy->name); ++ ++ if (index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ } ++ ++ res = ip_set_destroy(index); ++ goto done; ++ } ++ case IP_SET_OP_FLUSH:{ ++ struct ip_set_req_std *req_flush = ++ (struct ip_set_req_std *) data; ++ ++ if (len != sizeof(struct ip_set_req_std)) { ++ ip_set_printk("invalid FLUSH data (want %zu, got %u)", ++ sizeof(struct ip_set_req_std), len); ++ res = -EINVAL; ++ goto done; ++ } ++ if (strcmp(req_flush->name, IPSET_TOKEN_ALL) == 0) { ++ /* Flush all sets */ ++ index = IP_SET_INVALID_ID; ++ } else { ++ req_flush->name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ index = ip_set_find_byname(req_flush->name); ++ ++ if (index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ } ++ res = ip_set_flush(index); ++ goto done; ++ } ++ case IP_SET_OP_RENAME:{ ++ struct ip_set_req_create *req_rename ++ = (struct ip_set_req_create *) data; ++ ++ if (len != sizeof(struct ip_set_req_create)) { ++ ip_set_printk("invalid RENAME data (want %zu, got %u)", ++ sizeof(struct ip_set_req_create), len); ++ res = -EINVAL; ++ goto done; ++ } ++ ++ req_rename->name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ req_rename->typename[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ index = ip_set_find_byname(req_rename->name); ++ if (index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ res = ip_set_rename(index, req_rename->typename); ++ goto done; ++ } ++ case IP_SET_OP_SWAP:{ ++ struct ip_set_req_create *req_swap ++ = (struct ip_set_req_create *) data; ++ ip_set_id_t to_index; ++ ++ if (len != sizeof(struct ip_set_req_create)) { ++ ip_set_printk("invalid SWAP data (want %zu, got %u)", ++ sizeof(struct ip_set_req_create), len); ++ res = -EINVAL; ++ goto done; ++ } ++ ++ req_swap->name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ req_swap->typename[IP_SET_MAXNAMELEN - 1] = '\0'; ++ ++ index = ip_set_find_byname(req_swap->name); ++ if (index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ to_index = ip_set_find_byname(req_swap->typename); ++ if (to_index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ res = ip_set_swap(index, to_index); ++ goto done; ++ } ++ default: ++ break; /* Set identified by id */ ++ } ++ ++ /* There we may have add/del/test/bind/unbind/test_bind operations */ ++ if (*op < IP_SET_OP_ADD_IP || *op > IP_SET_OP_TEST_BIND_SET) { ++ res = -EBADMSG; ++ goto done; ++ } ++ adtfn = adtfn_table[*op - IP_SET_OP_ADD_IP].fn; ++ ++ if (len < sizeof(struct ip_set_req_adt)) { ++ ip_set_printk("short data in adt request (want >=%zu, got %u)", ++ sizeof(struct ip_set_req_adt), len); ++ res = -EINVAL; ++ goto done; ++ } ++ req_adt = (struct ip_set_req_adt *) data; ++ ++ /* -U :all: :all:|:default: uses IP_SET_INVALID_ID */ ++ if (!(*op == IP_SET_OP_UNBIND_SET ++ && req_adt->index == IP_SET_INVALID_ID)) { ++ index = ip_set_find_byindex(req_adt->index); ++ if (index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ } ++ res = adtfn(index, data, len); ++ ++ done: ++ up(&ip_set_app_mutex); ++ vfree(data); ++ if (res > 0) ++ res = 0; ++ DP("final result %d", res); ++ return res; ++} ++ ++static int ++ip_set_sockfn_get(struct sock *sk, int optval, void *user, int *len) ++{ ++ int res = 0; ++ unsigned *op; ++ ip_set_id_t index = IP_SET_INVALID_ID; ++ void *data; ++ int copylen = *len; ++ ++ DP("optval=%d, user=%p, len=%d", optval, user, *len); ++ if (!capable(CAP_NET_ADMIN)) ++ return -EPERM; ++ if (optval != SO_IP_SET) ++ return -EBADF; ++ if (*len < sizeof(unsigned)) { ++ ip_set_printk("short userdata (want >=%zu, got %d)", ++ sizeof(unsigned), *len); ++ return -EINVAL; ++ } ++ data = vmalloc(*len); ++ if (!data) { ++ DP("out of mem for %d bytes", *len); ++ return -ENOMEM; ++ } ++ if (copy_from_user(data, user, *len) != 0) { ++ res = -EFAULT; ++ goto done; ++ } ++ if (down_interruptible(&ip_set_app_mutex)) { ++ res = -EINTR; ++ goto done; ++ } ++ ++ op = (unsigned *) data; ++ DP("op=%x", *op); ++ ++ if (*op < IP_SET_OP_VERSION) { ++ /* Check the version at the beginning of operations */ ++ struct ip_set_req_version *req_version = ++ (struct ip_set_req_version *) data; ++ if (req_version->version != IP_SET_PROTOCOL_VERSION) { ++ res = -EPROTO; ++ goto done; ++ } ++ } ++ ++ switch (*op) { ++ case IP_SET_OP_VERSION: { ++ struct ip_set_req_version *req_version = ++ (struct ip_set_req_version *) data; ++ ++ if (*len != sizeof(struct ip_set_req_version)) { ++ ip_set_printk("invalid VERSION (want %zu, got %d)", ++ sizeof(struct ip_set_req_version), ++ *len); ++ res = -EINVAL; ++ goto done; ++ } ++ ++ req_version->version = IP_SET_PROTOCOL_VERSION; ++ res = copy_to_user(user, req_version, ++ sizeof(struct ip_set_req_version)); ++ goto done; ++ } ++ case IP_SET_OP_GET_BYNAME: { ++ struct ip_set_req_get_set *req_get ++ = (struct ip_set_req_get_set *) data; ++ ++ if (*len != sizeof(struct ip_set_req_get_set)) { ++ ip_set_printk("invalid GET_BYNAME (want %zu, got %d)", ++ sizeof(struct ip_set_req_get_set), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ index = ip_set_find_byname(req_get->set.name); ++ req_get->set.index = index; ++ goto copy; ++ } ++ case IP_SET_OP_GET_BYINDEX: { ++ struct ip_set_req_get_set *req_get ++ = (struct ip_set_req_get_set *) data; ++ ++ if (*len != sizeof(struct ip_set_req_get_set)) { ++ ip_set_printk("invalid GET_BYINDEX (want %zu, got %d)", ++ sizeof(struct ip_set_req_get_set), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ index = ip_set_find_byindex(req_get->set.index); ++ strncpy(req_get->set.name, ++ index == IP_SET_INVALID_ID ? "" ++ : ip_set_list[index]->name, IP_SET_MAXNAMELEN); ++ goto copy; ++ } ++ case IP_SET_OP_ADT_GET: { ++ struct ip_set_req_adt_get *req_get ++ = (struct ip_set_req_adt_get *) data; ++ ++ if (*len != sizeof(struct ip_set_req_adt_get)) { ++ ip_set_printk("invalid ADT_GET (want %zu, got %d)", ++ sizeof(struct ip_set_req_adt_get), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ index = ip_set_find_byname(req_get->set.name); ++ if (index != IP_SET_INVALID_ID) { ++ req_get->set.index = index; ++ strncpy(req_get->typename, ++ ip_set_list[index]->type->typename, ++ IP_SET_MAXNAMELEN - 1); ++ } else { ++ res = -ENOENT; ++ goto done; ++ } ++ goto copy; ++ } ++ case IP_SET_OP_MAX_SETS: { ++ struct ip_set_req_max_sets *req_max_sets ++ = (struct ip_set_req_max_sets *) data; ++ ip_set_id_t i; ++ ++ if (*len != sizeof(struct ip_set_req_max_sets)) { ++ ip_set_printk("invalid MAX_SETS (want %zu, got %d)", ++ sizeof(struct ip_set_req_max_sets), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ ++ if (strcmp(req_max_sets->set.name, IPSET_TOKEN_ALL) == 0) { ++ req_max_sets->set.index = IP_SET_INVALID_ID; ++ } else { ++ req_max_sets->set.name[IP_SET_MAXNAMELEN - 1] = '\0'; ++ req_max_sets->set.index = ++ ip_set_find_byname(req_max_sets->set.name); ++ if (req_max_sets->set.index == IP_SET_INVALID_ID) { ++ res = -ENOENT; ++ goto done; ++ } ++ } ++ req_max_sets->max_sets = ip_set_max; ++ req_max_sets->sets = 0; ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] != NULL) ++ req_max_sets->sets++; ++ } ++ goto copy; ++ } ++ case IP_SET_OP_LIST_SIZE: ++ case IP_SET_OP_SAVE_SIZE: { ++ struct ip_set_req_setnames *req_setnames ++ = (struct ip_set_req_setnames *) data; ++ struct ip_set_name_list *name_list; ++ struct ip_set *set; ++ ip_set_id_t i; ++ int used; ++ ++ if (*len < sizeof(struct ip_set_req_setnames)) { ++ ip_set_printk("short LIST_SIZE (want >=%zu, got %d)", ++ sizeof(struct ip_set_req_setnames), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ ++ req_setnames->size = 0; ++ used = sizeof(struct ip_set_req_setnames); ++ for (i = 0; i < ip_set_max; i++) { ++ if (ip_set_list[i] == NULL) ++ continue; ++ name_list = (struct ip_set_name_list *) ++ (data + used); ++ used += sizeof(struct ip_set_name_list); ++ if (used > copylen) { ++ res = -EAGAIN; ++ goto done; ++ } ++ set = ip_set_list[i]; ++ /* Fill in index, name, etc. */ ++ name_list->index = i; ++ name_list->id = set->id; ++ strncpy(name_list->name, ++ set->name, ++ IP_SET_MAXNAMELEN - 1); ++ strncpy(name_list->typename, ++ set->type->typename, ++ IP_SET_MAXNAMELEN - 1); ++ DP("filled %s of type %s, index %u\n", ++ name_list->name, name_list->typename, ++ name_list->index); ++ if (!(req_setnames->index == IP_SET_INVALID_ID ++ || req_setnames->index == i)) ++ continue; ++ /* Update size */ ++ switch (*op) { ++ case IP_SET_OP_LIST_SIZE: { ++ req_setnames->size += sizeof(struct ip_set_list) ++ + set->type->header_size ++ + set->type->list_members_size(set); ++ /* Sets are identified by id in the hash */ ++ FOREACH_HASH_DO(__set_hash_bindings_size_list, ++ set->id, &req_setnames->size); ++ break; ++ } ++ case IP_SET_OP_SAVE_SIZE: { ++ req_setnames->size += sizeof(struct ip_set_save) ++ + set->type->header_size ++ + set->type->list_members_size(set); ++ FOREACH_HASH_DO(__set_hash_bindings_size_save, ++ set->id, &req_setnames->size); ++ break; ++ } ++ default: ++ break; ++ } ++ } ++ if (copylen != used) { ++ res = -EAGAIN; ++ goto done; ++ } ++ goto copy; ++ } ++ case IP_SET_OP_LIST: { ++ struct ip_set_req_list *req_list ++ = (struct ip_set_req_list *) data; ++ ip_set_id_t i; ++ int used; ++ ++ if (*len < sizeof(struct ip_set_req_list)) { ++ ip_set_printk("short LIST (want >=%zu, got %d)", ++ sizeof(struct ip_set_req_list), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ index = req_list->index; ++ if (index != IP_SET_INVALID_ID ++ && ip_set_find_byindex(index) != index) { ++ res = -ENOENT; ++ goto done; ++ } ++ used = 0; ++ if (index == IP_SET_INVALID_ID) { ++ /* List all sets */ ++ for (i = 0; i < ip_set_max && res == 0; i++) { ++ if (ip_set_list[i] != NULL) ++ res = ip_set_list_set(i, data, &used, *len); ++ } ++ } else { ++ /* List an individual set */ ++ res = ip_set_list_set(index, data, &used, *len); ++ } ++ if (res != 0) ++ goto done; ++ else if (copylen != used) { ++ res = -EAGAIN; ++ goto done; ++ } ++ goto copy; ++ } ++ case IP_SET_OP_SAVE: { ++ struct ip_set_req_list *req_save ++ = (struct ip_set_req_list *) data; ++ ip_set_id_t i; ++ int used; ++ ++ if (*len < sizeof(struct ip_set_req_list)) { ++ ip_set_printk("short SAVE (want >=%zu, got %d)", ++ sizeof(struct ip_set_req_list), *len); ++ res = -EINVAL; ++ goto done; ++ } ++ index = req_save->index; ++ if (index != IP_SET_INVALID_ID ++ && ip_set_find_byindex(index) != index) { ++ res = -ENOENT; ++ goto done; ++ } ++ used = 0; ++ if (index == IP_SET_INVALID_ID) { ++ /* Save all sets */ ++ for (i = 0; i < ip_set_max && res == 0; i++) { ++ if (ip_set_list[i] != NULL) ++ res = ip_set_save_set(i, data, &used, *len); ++ } ++ } else { ++ /* Save an individual set */ ++ res = ip_set_save_set(index, data, &used, *len); ++ } ++ if (res == 0) ++ res = ip_set_save_bindings(index, data, &used, *len); ++ ++ if (res != 0) ++ goto done; ++ else if (copylen != used) { ++ res = -EAGAIN; ++ goto done; ++ } ++ goto copy; ++ } ++ case IP_SET_OP_RESTORE: { ++ struct ip_set_req_setnames *req_restore ++ = (struct ip_set_req_setnames *) data; ++ int line; ++ ++ if (*len < sizeof(struct ip_set_req_setnames) ++ || *len != req_restore->size) { ++ ip_set_printk("invalid RESTORE (want =%zu, got %d)", ++ req_restore->size, *len); ++ res = -EINVAL; ++ goto done; ++ } ++ line = ip_set_restore(data + sizeof(struct ip_set_req_setnames), ++ req_restore->size - sizeof(struct ip_set_req_setnames)); ++ DP("ip_set_restore: %u", line); ++ if (line != 0) { ++ res = -EAGAIN; ++ req_restore->size = line; ++ copylen = sizeof(struct ip_set_req_setnames); ++ goto copy; ++ } ++ goto done; ++ } ++ default: ++ res = -EBADMSG; ++ goto done; ++ } /* end of switch(op) */ ++ ++ copy: ++ DP("set %s, copylen %u", index != IP_SET_INVALID_ID ++ && ip_set_list[index] ++ ? ip_set_list[index]->name ++ : ":all:", copylen); ++ res = copy_to_user(user, data, copylen); ++ ++ done: ++ up(&ip_set_app_mutex); ++ vfree(data); ++ if (res > 0) ++ res = 0; ++ DP("final result %d", res); ++ return res; ++} ++ ++static struct nf_sockopt_ops so_set = { ++ .pf = PF_INET, ++ .set_optmin = SO_IP_SET, ++ .set_optmax = SO_IP_SET + 1, ++ .set = &ip_set_sockfn_set, ++ .get_optmin = SO_IP_SET, ++ .get_optmax = SO_IP_SET + 1, ++ .get = &ip_set_sockfn_get, ++ .use = 0 ++}; ++ ++static int max_sets, hash_size; ++module_param(max_sets, int, 0600); ++MODULE_PARM_DESC(max_sets, "maximal number of sets"); ++module_param(hash_size, int, 0600); ++MODULE_PARM_DESC(hash_size, "hash size for bindings"); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("module implementing core IP set support"); ++ ++static int __init init(void) ++{ ++ int res; ++ ip_set_id_t i; ++ ++ get_random_bytes(&ip_set_hash_random, 4); ++ if (max_sets) ++ ip_set_max = max_sets; ++ ip_set_list = vmalloc(sizeof(struct ip_set *) * ip_set_max); ++ if (!ip_set_list) { ++ printk(KERN_ERR "Unable to create ip_set_list\n"); ++ return -ENOMEM; ++ } ++ memset(ip_set_list, 0, sizeof(struct ip_set *) * ip_set_max); ++ if (hash_size) ++ ip_set_bindings_hash_size = hash_size; ++ ip_set_hash = vmalloc(sizeof(struct list_head) * ip_set_bindings_hash_size); ++ if (!ip_set_hash) { ++ printk(KERN_ERR "Unable to create ip_set_hash\n"); ++ vfree(ip_set_list); ++ return -ENOMEM; ++ } ++ for (i = 0; i < ip_set_bindings_hash_size; i++) ++ INIT_LIST_HEAD(&ip_set_hash[i]); ++ ++ INIT_LIST_HEAD(&set_type_list); ++ ++ res = nf_register_sockopt(&so_set); ++ if (res != 0) { ++ ip_set_printk("SO_SET registry failed: %d", res); ++ vfree(ip_set_list); ++ vfree(ip_set_hash); ++ return res; ++ } ++ return 0; ++} ++ ++static void __exit fini(void) ++{ ++ /* There can't be any existing set or binding */ ++ nf_unregister_sockopt(&so_set); ++ vfree(ip_set_list); ++ vfree(ip_set_hash); ++ DP("these are the famous last words"); ++} ++ ++EXPORT_SYMBOL(ip_set_register_set_type); ++EXPORT_SYMBOL(ip_set_unregister_set_type); ++ ++EXPORT_SYMBOL(ip_set_get_byname); ++EXPORT_SYMBOL(ip_set_get_byindex); ++EXPORT_SYMBOL(ip_set_put); ++ ++EXPORT_SYMBOL(ip_set_addip_kernel); ++EXPORT_SYMBOL(ip_set_delip_kernel); ++EXPORT_SYMBOL(ip_set_testip_kernel); ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_iphash.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_iphash.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_iphash.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_iphash.c 2007-06-08 16:29:31.829808250 -0500 +@@ -0,0 +1,413 @@ ++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing an ip hash set */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++#include <linux/vmalloc.h> ++#include <linux/random.h> ++ ++#include <net/ip.h> ++ ++#include <linux/netfilter_ipv4/ip_set_malloc.h> ++#include <linux/netfilter_ipv4/ip_set_iphash.h> ++#include <linux/netfilter_ipv4/ip_set_jhash.h> ++ ++static int limit = MAX_RANGE; ++ ++static inline __u32 ++jhash_ip(const struct ip_set_iphash *map, uint16_t i, ip_set_ip_t ip) ++{ ++ return jhash_1word(ip, *(((uint32_t *) map->initval) + i)); ++} ++ ++static inline __u32 ++hash_id(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ __u32 id; ++ u_int16_t i; ++ ip_set_ip_t *elem; ++ ++ *hash_ip = ip & map->netmask; ++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u, %u.%u.%u.%u", ++ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip), HIPQUAD(map->netmask)); ++ ++ for (i = 0; i < map->probes; i++) { ++ id = jhash_ip(map, i, *hash_ip) % map->hashsize; ++ DP("hash key: %u", id); ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id); ++ if (*elem == *hash_ip) ++ return id; ++ /* No shortcut at testing - there can be deleted ++ * entries. */ ++ } ++ return UINT_MAX; ++} ++ ++static inline int ++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ return (ip && hash_id(set, ip, hash_ip) != UINT_MAX); ++} ++ ++static int ++testip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_iphash *req = ++ (struct ip_set_req_iphash *) data; ++ ++ if (size != sizeof(struct ip_set_req_iphash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iphash), ++ size); ++ return -EINVAL; ++ } ++ return __testip(set, req->ip, hash_ip); ++} ++ ++static int ++testip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __testip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static inline int ++__addip(struct ip_set_iphash *map, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ __u32 probe; ++ u_int16_t i; ++ ip_set_ip_t *elem; ++ ++ if (!ip || map->elements > limit) ++ return -ERANGE; ++ ++ *hash_ip = ip & map->netmask; ++ ++ for (i = 0; i < map->probes; i++) { ++ probe = jhash_ip(map, i, *hash_ip) % map->hashsize; ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe); ++ if (*elem == *hash_ip) ++ return -EEXIST; ++ if (!*elem) { ++ *elem = *hash_ip; ++ map->elements++; ++ return 0; ++ } ++ } ++ /* Trigger rehashing */ ++ return -EAGAIN; ++} ++ ++static int ++addip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_iphash *req = ++ (struct ip_set_req_iphash *) data; ++ ++ if (size != sizeof(struct ip_set_req_iphash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iphash), ++ size); ++ return -EINVAL; ++ } ++ return __addip((struct ip_set_iphash *) set->data, req->ip, hash_ip); ++} ++ ++static int ++addip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __addip((struct ip_set_iphash *) set->data, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static int retry(struct ip_set *set) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ ip_set_ip_t hash_ip, *elem; ++ void *members; ++ u_int32_t i, hashsize = map->hashsize; ++ int res; ++ struct ip_set_iphash *tmp; ++ ++ if (map->resize == 0) ++ return -ERANGE; ++ ++ again: ++ res = 0; ++ ++ /* Calculate new hash size */ ++ hashsize += (hashsize * map->resize)/100; ++ if (hashsize == map->hashsize) ++ hashsize++; ++ ++ ip_set_printk("rehashing of set %s triggered: " ++ "hashsize grows from %u to %u", ++ set->name, map->hashsize, hashsize); ++ ++ tmp = kmalloc(sizeof(struct ip_set_iphash) ++ + map->probes * sizeof(uint32_t), GFP_ATOMIC); ++ if (!tmp) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_iphash) ++ + map->probes * sizeof(uint32_t)); ++ return -ENOMEM; ++ } ++ tmp->members = harray_malloc(hashsize, sizeof(ip_set_ip_t), GFP_ATOMIC); ++ if (!tmp->members) { ++ DP("out of memory for %d bytes", hashsize * sizeof(ip_set_ip_t)); ++ kfree(tmp); ++ return -ENOMEM; ++ } ++ tmp->hashsize = hashsize; ++ tmp->elements = 0; ++ tmp->probes = map->probes; ++ tmp->resize = map->resize; ++ tmp->netmask = map->netmask; ++ memcpy(tmp->initval, map->initval, map->probes * sizeof(uint32_t)); ++ ++ write_lock_bh(&set->lock); ++ map = (struct ip_set_iphash *) set->data; /* Play safe */ ++ for (i = 0; i < map->hashsize && res == 0; i++) { ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i); ++ if (*elem) ++ res = __addip(tmp, *elem, &hash_ip); ++ } ++ if (res) { ++ /* Failure, try again */ ++ write_unlock_bh(&set->lock); ++ harray_free(tmp->members); ++ kfree(tmp); ++ goto again; ++ } ++ ++ /* Success at resizing! */ ++ members = map->members; ++ ++ map->hashsize = tmp->hashsize; ++ map->members = tmp->members; ++ write_unlock_bh(&set->lock); ++ ++ harray_free(members); ++ kfree(tmp); ++ ++ return 0; ++} ++ ++static inline int ++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ ip_set_ip_t id, *elem; ++ ++ if (!ip) ++ return -ERANGE; ++ ++ id = hash_id(set, ip, hash_ip); ++ if (id == UINT_MAX) ++ return -EEXIST; ++ ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id); ++ *elem = 0; ++ map->elements--; ++ ++ return 0; ++} ++ ++static int ++delip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_iphash *req = ++ (struct ip_set_req_iphash *) data; ++ ++ if (size != sizeof(struct ip_set_req_iphash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iphash), ++ size); ++ return -EINVAL; ++ } ++ return __delip(set, req->ip, hash_ip); ++} ++ ++static int ++delip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __delip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ struct ip_set_req_iphash_create *req = ++ (struct ip_set_req_iphash_create *) data; ++ struct ip_set_iphash *map; ++ uint16_t i; ++ ++ if (size != sizeof(struct ip_set_req_iphash_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iphash_create), ++ size); ++ return -EINVAL; ++ } ++ ++ if (req->hashsize < 1) { ++ ip_set_printk("hashsize too small"); ++ return -ENOEXEC; ++ } ++ ++ if (req->probes < 1) { ++ ip_set_printk("probes too small"); ++ return -ENOEXEC; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_iphash) ++ + req->probes * sizeof(uint32_t), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_iphash) ++ + req->probes * sizeof(uint32_t)); ++ return -ENOMEM; ++ } ++ for (i = 0; i < req->probes; i++) ++ get_random_bytes(((uint32_t *) map->initval)+i, 4); ++ map->elements = 0; ++ map->hashsize = req->hashsize; ++ map->probes = req->probes; ++ map->resize = req->resize; ++ map->netmask = req->netmask; ++ map->members = harray_malloc(map->hashsize, sizeof(ip_set_ip_t), GFP_KERNEL); ++ if (!map->members) { ++ DP("out of memory for %d bytes", map->hashsize * sizeof(ip_set_ip_t)); ++ kfree(map); ++ return -ENOMEM; ++ } ++ ++ set->data = map; ++ return 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ ++ harray_free(map->members); ++ kfree(map); ++ ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ harray_flush(map->members, map->hashsize, sizeof(ip_set_ip_t)); ++ map->elements = 0; ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ struct ip_set_req_iphash_create *header = ++ (struct ip_set_req_iphash_create *) data; ++ ++ header->hashsize = map->hashsize; ++ header->probes = map->probes; ++ header->resize = map->resize; ++ header->netmask = map->netmask; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ ++ return (map->hashsize * sizeof(ip_set_ip_t)); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data; ++ ip_set_ip_t i, *elem; ++ ++ for (i = 0; i < map->hashsize; i++) { ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i); ++ ((ip_set_ip_t *)data)[i] = *elem; ++ } ++} ++ ++static struct ip_set_type ip_set_iphash = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_iphash), ++ .addip = &addip, ++ .addip_kernel = &addip_kernel, ++ .retry = &retry, ++ .delip = &delip, ++ .delip_kernel = &delip_kernel, ++ .testip = &testip, ++ .testip_kernel = &testip_kernel, ++ .header_size = sizeof(struct ip_set_req_iphash_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("iphash type of IP sets"); ++module_param(limit, int, 0600); ++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets"); ++ ++static int __init init(void) ++{ ++ return ip_set_register_set_type(&ip_set_iphash); ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_iphash); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_ipmap.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_ipmap.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_ipmap.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_ipmap.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,327 @@ ++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> ++ * Patrick Schaaf <bof@bof.de> ++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing an IP set type: the single bitmap type */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++ ++#include <linux/netfilter_ipv4/ip_set_ipmap.h> ++ ++static inline ip_set_ip_t ++ip_to_id(const struct ip_set_ipmap *map, ip_set_ip_t ip) ++{ ++ return (ip - map->first_ip)/map->hosts; ++} ++ ++static inline int ++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ ++ *hash_ip = ip & map->netmask; ++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u", ++ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip)); ++ return !!test_bit(ip_to_id(map, *hash_ip), map->members); ++} ++ ++static int ++testip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_ipmap *req = ++ (struct ip_set_req_ipmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_ipmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipmap), ++ size); ++ return -EINVAL; ++ } ++ return __testip(set, req->ip, hash_ip); ++} ++ ++static int ++testip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ int res; ++ ++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", ++ flags[index] & IPSET_SRC ? "SRC" : "DST", ++ NIPQUAD(skb->nh.iph->saddr), ++ NIPQUAD(skb->nh.iph->daddr)); ++ ++ res = __testip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++ return (res < 0 ? 0 : res); ++} ++ ++static inline int ++__addip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ ++ *hash_ip = ip & map->netmask; ++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip)); ++ if (test_and_set_bit(ip_to_id(map, *hash_ip), map->members)) ++ return -EEXIST; ++ ++ return 0; ++} ++ ++static int ++addip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_ipmap *req = ++ (struct ip_set_req_ipmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_ipmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipmap), ++ size); ++ return -EINVAL; ++ } ++ DP("%u.%u.%u.%u", HIPQUAD(req->ip)); ++ return __addip(set, req->ip, hash_ip); ++} ++ ++static int ++addip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __addip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static inline int ++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ ++ *hash_ip = ip & map->netmask; ++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip)); ++ if (!test_and_clear_bit(ip_to_id(map, *hash_ip), map->members)) ++ return -EEXIST; ++ ++ return 0; ++} ++ ++static int ++delip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_ipmap *req = ++ (struct ip_set_req_ipmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_ipmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipmap), ++ size); ++ return -EINVAL; ++ } ++ return __delip(set, req->ip, hash_ip); ++} ++ ++static int ++delip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __delip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ int newbytes; ++ struct ip_set_req_ipmap_create *req = ++ (struct ip_set_req_ipmap_create *) data; ++ struct ip_set_ipmap *map; ++ ++ if (size != sizeof(struct ip_set_req_ipmap_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipmap_create), ++ size); ++ return -EINVAL; ++ } ++ ++ DP("from %u.%u.%u.%u to %u.%u.%u.%u", ++ HIPQUAD(req->from), HIPQUAD(req->to)); ++ ++ if (req->from > req->to) { ++ DP("bad ip range"); ++ return -ENOEXEC; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_ipmap), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_ipmap)); ++ return -ENOMEM; ++ } ++ map->first_ip = req->from; ++ map->last_ip = req->to; ++ map->netmask = req->netmask; ++ ++ if (req->netmask == 0xFFFFFFFF) { ++ map->hosts = 1; ++ map->sizeid = map->last_ip - map->first_ip + 1; ++ } else { ++ unsigned int mask_bits, netmask_bits; ++ ip_set_ip_t mask; ++ ++ map->first_ip &= map->netmask; /* Should we better bark? */ ++ ++ mask = range_to_mask(map->first_ip, map->last_ip, &mask_bits); ++ netmask_bits = mask_to_bits(map->netmask); ++ ++ if ((!mask && (map->first_ip || map->last_ip != 0xFFFFFFFF)) ++ || netmask_bits <= mask_bits) ++ return -ENOEXEC; ++ ++ DP("mask_bits %u, netmask_bits %u", ++ mask_bits, netmask_bits); ++ map->hosts = 2 << (32 - netmask_bits - 1); ++ map->sizeid = 2 << (netmask_bits - mask_bits - 1); ++ } ++ if (map->sizeid > MAX_RANGE + 1) { ++ ip_set_printk("range too big (max %d addresses)", ++ MAX_RANGE+1); ++ kfree(map); ++ return -ENOEXEC; ++ } ++ DP("hosts %u, sizeid %u", map->hosts, map->sizeid); ++ newbytes = bitmap_bytes(0, map->sizeid - 1); ++ map->members = kmalloc(newbytes, GFP_KERNEL); ++ if (!map->members) { ++ DP("out of memory for %d bytes", newbytes); ++ kfree(map); ++ return -ENOMEM; ++ } ++ memset(map->members, 0, newbytes); ++ ++ set->data = map; ++ return 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ ++ kfree(map->members); ++ kfree(map); ++ ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ memset(map->members, 0, bitmap_bytes(0, map->sizeid - 1)); ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ struct ip_set_req_ipmap_create *header = ++ (struct ip_set_req_ipmap_create *) data; ++ ++ header->from = map->first_ip; ++ header->to = map->last_ip; ++ header->netmask = map->netmask; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ ++ return bitmap_bytes(0, map->sizeid - 1); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data; ++ int bytes = bitmap_bytes(0, map->sizeid - 1); ++ ++ memcpy(data, map->members, bytes); ++} ++ ++static struct ip_set_type ip_set_ipmap = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_ipmap), ++ .addip = &addip, ++ .addip_kernel = &addip_kernel, ++ .delip = &delip, ++ .delip_kernel = &delip_kernel, ++ .testip = &testip, ++ .testip_kernel = &testip_kernel, ++ .header_size = sizeof(struct ip_set_req_ipmap_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("ipmap type of IP sets"); ++ ++static int __init init(void) ++{ ++ return ip_set_register_set_type(&ip_set_ipmap); ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_ipmap); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_ipporthash.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_ipporthash.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_ipporthash.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_ipporthash.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,535 @@ ++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing an ip+port hash set */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/tcp.h> ++#include <linux/udp.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++#include <linux/vmalloc.h> ++#include <linux/random.h> ++ ++#include <net/ip.h> ++ ++#include <linux/netfilter_ipv4/ip_set_malloc.h> ++#include <linux/netfilter_ipv4/ip_set_ipporthash.h> ++#include <linux/netfilter_ipv4/ip_set_jhash.h> ++ ++static int limit = MAX_RANGE; ++ ++/* We must handle non-linear skbs */ ++static inline ip_set_ip_t ++get_port(const struct sk_buff *skb, u_int32_t flags) ++{ ++ struct iphdr *iph = skb->nh.iph; ++ u_int16_t offset = ntohs(iph->frag_off) & IP_OFFSET; ++ ++ switch (iph->protocol) { ++ case IPPROTO_TCP: { ++ struct tcphdr tcph; ++ ++ /* See comments at tcp_match in ip_tables.c */ ++ if (offset) ++ return INVALID_PORT; ++ ++ if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &tcph, sizeof(tcph)) < 0) ++ /* No choice either */ ++ return INVALID_PORT; ++ ++ return ntohs(flags & IPSET_SRC ? ++ tcph.source : tcph.dest); ++ } ++ case IPPROTO_UDP: { ++ struct udphdr udph; ++ ++ if (offset) ++ return INVALID_PORT; ++ ++ if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &udph, sizeof(udph)) < 0) ++ /* No choice either */ ++ return INVALID_PORT; ++ ++ return ntohs(flags & IPSET_SRC ? ++ udph.source : udph.dest); ++ } ++ default: ++ return INVALID_PORT; ++ } ++} ++ ++static inline __u32 ++jhash_ip(const struct ip_set_ipporthash *map, uint16_t i, ip_set_ip_t ip) ++{ ++ return jhash_1word(ip, *(((uint32_t *) map->initval) + i)); ++} ++ ++#define HASH_IP(map, ip, port) (port + ((ip - ((map)->first_ip)) << 16)) ++ ++static inline __u32 ++hash_id(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_ipporthash *map = ++ (struct ip_set_ipporthash *) set->data; ++ __u32 id; ++ u_int16_t i; ++ ip_set_ip_t *elem; ++ ++ *hash_ip = HASH_IP(map, ip, port); ++ DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u", ++ set->name, HIPQUAD(ip), port, HIPQUAD(*hash_ip)); ++ ++ for (i = 0; i < map->probes; i++) { ++ id = jhash_ip(map, i, *hash_ip) % map->hashsize; ++ DP("hash key: %u", id); ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id); ++ if (*elem == *hash_ip) ++ return id; ++ /* No shortcut at testing - there can be deleted ++ * entries. */ ++ } ++ return UINT_MAX; ++} ++ ++static inline int ++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ ++ return (hash_id(set, ip, port, hash_ip) != UINT_MAX); ++} ++ ++static int ++testip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_ipporthash *req = ++ (struct ip_set_req_ipporthash *) data; ++ ++ if (size != sizeof(struct ip_set_req_ipporthash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipporthash), ++ size); ++ return -EINVAL; ++ } ++ return __testip(set, req->ip, req->port, hash_ip); ++} ++ ++static int ++testip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ ip_set_ip_t port; ++ ++ if (flags[index+1] == 0) ++ return -EINVAL; ++ ++ port = get_port(skb, flags[index+1]); ++ ++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", ++ flags[index] & IPSET_SRC ? "SRC" : "DST", ++ NIPQUAD(skb->nh.iph->saddr), ++ NIPQUAD(skb->nh.iph->daddr)); ++ DP("flag %s port %u", ++ flags[index+1] & IPSET_SRC ? "SRC" : "DST", ++ port); ++ if (port == INVALID_PORT) ++ return 0; ++ ++ return __testip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ port, ++ hash_ip); ++} ++ ++static inline int ++__add_haship(struct ip_set_ipporthash *map, ip_set_ip_t hash_ip) ++{ ++ __u32 probe; ++ u_int16_t i; ++ ip_set_ip_t *elem; ++ ++ for (i = 0; i < map->probes; i++) { ++ probe = jhash_ip(map, i, hash_ip) % map->hashsize; ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe); ++ if (*elem == hash_ip) ++ return -EEXIST; ++ if (!*elem) { ++ *elem = hash_ip; ++ map->elements++; ++ return 0; ++ } ++ } ++ /* Trigger rehashing */ ++ return -EAGAIN; ++} ++ ++static inline int ++__addip(struct ip_set_ipporthash *map, ip_set_ip_t ip, ip_set_ip_t port, ++ ip_set_ip_t *hash_ip) ++{ ++ if (map->elements > limit) ++ return -ERANGE; ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ ++ *hash_ip = HASH_IP(map, ip, port); ++ ++ return __add_haship(map, *hash_ip); ++} ++ ++static int ++addip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_ipporthash *req = ++ (struct ip_set_req_ipporthash *) data; ++ ++ if (size != sizeof(struct ip_set_req_ipporthash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipporthash), ++ size); ++ return -EINVAL; ++ } ++ return __addip((struct ip_set_ipporthash *) set->data, ++ req->ip, req->port, hash_ip); ++} ++ ++static int ++addip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ ip_set_ip_t port; ++ ++ if (flags[index+1] == 0) ++ return -EINVAL; ++ ++ port = get_port(skb, flags[index+1]); ++ ++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", ++ flags[index] & IPSET_SRC ? "SRC" : "DST", ++ NIPQUAD(skb->nh.iph->saddr), ++ NIPQUAD(skb->nh.iph->daddr)); ++ DP("flag %s port %u", ++ flags[index+1] & IPSET_SRC ? "SRC" : "DST", ++ port); ++ if (port == INVALID_PORT) ++ return -EINVAL; ++ ++ return __addip((struct ip_set_ipporthash *) set->data, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ port, ++ hash_ip); ++} ++ ++static int retry(struct ip_set *set) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ ip_set_ip_t *elem; ++ void *members; ++ u_int32_t i, hashsize = map->hashsize; ++ int res; ++ struct ip_set_ipporthash *tmp; ++ ++ if (map->resize == 0) ++ return -ERANGE; ++ ++ again: ++ res = 0; ++ ++ /* Calculate new hash size */ ++ hashsize += (hashsize * map->resize)/100; ++ if (hashsize == map->hashsize) ++ hashsize++; ++ ++ ip_set_printk("rehashing of set %s triggered: " ++ "hashsize grows from %u to %u", ++ set->name, map->hashsize, hashsize); ++ ++ tmp = kmalloc(sizeof(struct ip_set_ipporthash) ++ + map->probes * sizeof(uint32_t), GFP_ATOMIC); ++ if (!tmp) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_ipporthash) ++ + map->probes * sizeof(uint32_t)); ++ return -ENOMEM; ++ } ++ tmp->members = harray_malloc(hashsize, sizeof(ip_set_ip_t), GFP_ATOMIC); ++ if (!tmp->members) { ++ DP("out of memory for %d bytes", hashsize * sizeof(ip_set_ip_t)); ++ kfree(tmp); ++ return -ENOMEM; ++ } ++ tmp->hashsize = hashsize; ++ tmp->elements = 0; ++ tmp->probes = map->probes; ++ tmp->resize = map->resize; ++ tmp->first_ip = map->first_ip; ++ tmp->last_ip = map->last_ip; ++ memcpy(tmp->initval, map->initval, map->probes * sizeof(uint32_t)); ++ ++ write_lock_bh(&set->lock); ++ map = (struct ip_set_ipporthash *) set->data; /* Play safe */ ++ for (i = 0; i < map->hashsize && res == 0; i++) { ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i); ++ if (*elem) ++ res = __add_haship(tmp, *elem); ++ } ++ if (res) { ++ /* Failure, try again */ ++ write_unlock_bh(&set->lock); ++ harray_free(tmp->members); ++ kfree(tmp); ++ goto again; ++ } ++ ++ /* Success at resizing! */ ++ members = map->members; ++ ++ map->hashsize = tmp->hashsize; ++ map->members = tmp->members; ++ write_unlock_bh(&set->lock); ++ ++ harray_free(members); ++ kfree(tmp); ++ ++ return 0; ++} ++ ++static inline int ++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ ip_set_ip_t id; ++ ip_set_ip_t *elem; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ ++ id = hash_id(set, ip, port, hash_ip); ++ ++ if (id == UINT_MAX) ++ return -EEXIST; ++ ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id); ++ *elem = 0; ++ map->elements--; ++ ++ return 0; ++} ++ ++static int ++delip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_ipporthash *req = ++ (struct ip_set_req_ipporthash *) data; ++ ++ if (size != sizeof(struct ip_set_req_ipporthash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipporthash), ++ size); ++ return -EINVAL; ++ } ++ return __delip(set, req->ip, req->port, hash_ip); ++} ++ ++static int ++delip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ ip_set_ip_t port; ++ ++ if (flags[index+1] == 0) ++ return -EINVAL; ++ ++ port = get_port(skb, flags[index+1]); ++ ++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", ++ flags[index] & IPSET_SRC ? "SRC" : "DST", ++ NIPQUAD(skb->nh.iph->saddr), ++ NIPQUAD(skb->nh.iph->daddr)); ++ DP("flag %s port %u", ++ flags[index+1] & IPSET_SRC ? "SRC" : "DST", ++ port); ++ if (port == INVALID_PORT) ++ return -EINVAL; ++ ++ return __delip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ port, ++ hash_ip); ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ struct ip_set_req_ipporthash_create *req = ++ (struct ip_set_req_ipporthash_create *) data; ++ struct ip_set_ipporthash *map; ++ uint16_t i; ++ ++ if (size != sizeof(struct ip_set_req_ipporthash_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_ipporthash_create), ++ size); ++ return -EINVAL; ++ } ++ ++ if (req->hashsize < 1) { ++ ip_set_printk("hashsize too small"); ++ return -ENOEXEC; ++ } ++ ++ if (req->probes < 1) { ++ ip_set_printk("probes too small"); ++ return -ENOEXEC; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_ipporthash) ++ + req->probes * sizeof(uint32_t), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_ipporthash) ++ + req->probes * sizeof(uint32_t)); ++ return -ENOMEM; ++ } ++ for (i = 0; i < req->probes; i++) ++ get_random_bytes(((uint32_t *) map->initval)+i, 4); ++ map->elements = 0; ++ map->hashsize = req->hashsize; ++ map->probes = req->probes; ++ map->resize = req->resize; ++ map->first_ip = req->from; ++ map->last_ip = req->to; ++ map->members = harray_malloc(map->hashsize, sizeof(ip_set_ip_t), GFP_KERNEL); ++ if (!map->members) { ++ DP("out of memory for %d bytes", map->hashsize * sizeof(ip_set_ip_t)); ++ kfree(map); ++ return -ENOMEM; ++ } ++ ++ set->data = map; ++ return 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ ++ harray_free(map->members); ++ kfree(map); ++ ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ harray_flush(map->members, map->hashsize, sizeof(ip_set_ip_t)); ++ map->elements = 0; ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ struct ip_set_req_ipporthash_create *header = ++ (struct ip_set_req_ipporthash_create *) data; ++ ++ header->hashsize = map->hashsize; ++ header->probes = map->probes; ++ header->resize = map->resize; ++ header->from = map->first_ip; ++ header->to = map->last_ip; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ ++ return (map->hashsize * sizeof(ip_set_ip_t)); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data; ++ ip_set_ip_t i, *elem; ++ ++ for (i = 0; i < map->hashsize; i++) { ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i); ++ ((ip_set_ip_t *)data)[i] = *elem; ++ } ++} ++ ++static struct ip_set_type ip_set_ipporthash = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_DATA_DOUBLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_ipporthash), ++ .addip = &addip, ++ .addip_kernel = &addip_kernel, ++ .retry = &retry, ++ .delip = &delip, ++ .delip_kernel = &delip_kernel, ++ .testip = &testip, ++ .testip_kernel = &testip_kernel, ++ .header_size = sizeof(struct ip_set_req_ipporthash_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("ipporthash type of IP sets"); ++module_param(limit, int, 0600); ++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets"); ++ ++static int __init init(void) ++{ ++ return ip_set_register_set_type(&ip_set_ipporthash); ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_ipporthash); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_iptree.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_iptree.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_iptree.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_iptree.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,571 @@ ++/* Copyright (C) 2005 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing an IP set type: the iptree type */ ++ ++#include <linux/version.h> ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/slab.h> ++#include <linux/delay.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++ ++/* Backward compatibility */ ++#ifndef __nocast ++#define __nocast ++#endif ++ ++#include <linux/netfilter_ipv4/ip_set_iptree.h> ++ ++static int limit = MAX_RANGE; ++ ++/* Garbage collection interval in seconds: */ ++#define IPTREE_GC_TIME 5*60 ++/* Sleep so many milliseconds before trying again ++ * to delete the gc timer at destroying/flushing a set */ ++#define IPTREE_DESTROY_SLEEP 100 ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) ++static struct kmem_cache *branch_cachep; ++static struct kmem_cache *leaf_cachep; ++#else ++static kmem_cache_t *branch_cachep; ++static kmem_cache_t *leaf_cachep; ++#endif ++ ++#define ABCD(a,b,c,d,addrp) do { \ ++ a = ((unsigned char *)addrp)[3]; \ ++ b = ((unsigned char *)addrp)[2]; \ ++ c = ((unsigned char *)addrp)[1]; \ ++ d = ((unsigned char *)addrp)[0]; \ ++} while (0) ++ ++#define TESTIP_WALK(map, elem, branch) do { \ ++ if ((map)->tree[elem]) { \ ++ branch = (map)->tree[elem]; \ ++ } else \ ++ return 0; \ ++} while (0) ++ ++static inline int ++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned char a,b,c,d; ++ ++ if (!ip) ++ return -ERANGE; ++ ++ *hash_ip = ip; ++ ABCD(a, b, c, d, hash_ip); ++ DP("%u %u %u %u timeout %u", a, b, c, d, map->timeout); ++ TESTIP_WALK(map, a, btree); ++ TESTIP_WALK(btree, b, ctree); ++ TESTIP_WALK(ctree, c, dtree); ++ DP("%lu %lu", dtree->expires[d], jiffies); ++ return !!(map->timeout ? (time_after(dtree->expires[d], jiffies)) ++ : dtree->expires[d]); ++} ++ ++static int ++testip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_iptree *req = ++ (struct ip_set_req_iptree *) data; ++ ++ if (size != sizeof(struct ip_set_req_iptree)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iptree), ++ size); ++ return -EINVAL; ++ } ++ return __testip(set, req->ip, hash_ip); ++} ++ ++static int ++testip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ int res; ++ ++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", ++ flags[index] & IPSET_SRC ? "SRC" : "DST", ++ NIPQUAD(skb->nh.iph->saddr), ++ NIPQUAD(skb->nh.iph->daddr)); ++ ++ res = __testip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++ return (res < 0 ? 0 : res); ++} ++ ++#define ADDIP_WALK(map, elem, branch, type, cachep, flags) do { \ ++ if ((map)->tree[elem]) { \ ++ DP("found %u", elem); \ ++ branch = (map)->tree[elem]; \ ++ } else { \ ++ branch = (type *) \ ++ kmem_cache_alloc(cachep, flags); \ ++ if (branch == NULL) \ ++ return -ENOMEM; \ ++ memset(branch, 0, sizeof(*branch)); \ ++ (map)->tree[elem] = branch; \ ++ DP("alloc %u", elem); \ ++ } \ ++} while (0) ++ ++static inline int ++__addip(struct ip_set *set, ip_set_ip_t ip, unsigned int timeout, ++ ip_set_ip_t *hash_ip, ++ unsigned int __nocast flags) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned char a,b,c,d; ++ int ret = 0; ++ ++ if (!ip || map->elements > limit) ++ /* We could call the garbage collector ++ * but it's probably overkill */ ++ return -ERANGE; ++ ++ *hash_ip = ip; ++ ABCD(a, b, c, d, hash_ip); ++ DP("%u %u %u %u timeout %u", a, b, c, d, timeout); ++ ADDIP_WALK(map, a, btree, struct ip_set_iptreeb, branch_cachep, flags); ++ ADDIP_WALK(btree, b, ctree, struct ip_set_iptreec, branch_cachep, flags); ++ ADDIP_WALK(ctree, c, dtree, struct ip_set_iptreed, leaf_cachep, flags); ++ if (dtree->expires[d] ++ && (!map->timeout || time_after(dtree->expires[d], jiffies))) ++ ret = -EEXIST; ++ dtree->expires[d] = map->timeout ? (timeout * HZ + jiffies) : 1; ++ /* Lottery */ ++ if (dtree->expires[d] == 0) ++ dtree->expires[d] = 1; ++ DP("%u %lu", d, dtree->expires[d]); ++ if (ret == 0) ++ map->elements++; ++ return ret; ++} ++ ++static int ++addip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_req_iptree *req = ++ (struct ip_set_req_iptree *) data; ++ ++ if (size != sizeof(struct ip_set_req_iptree)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iptree), ++ size); ++ return -EINVAL; ++ } ++ DP("%u.%u.%u.%u %u", HIPQUAD(req->ip), req->timeout); ++ return __addip(set, req->ip, ++ req->timeout ? req->timeout : map->timeout, ++ hash_ip, ++ GFP_ATOMIC); ++} ++ ++static int ++addip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ ++ return __addip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ map->timeout, ++ hash_ip, ++ GFP_ATOMIC); ++} ++ ++#define DELIP_WALK(map, elem, branch) do { \ ++ if ((map)->tree[elem]) { \ ++ branch = (map)->tree[elem]; \ ++ } else \ ++ return -EEXIST; \ ++} while (0) ++ ++static inline int ++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned char a,b,c,d; ++ ++ if (!ip) ++ return -ERANGE; ++ ++ *hash_ip = ip; ++ ABCD(a, b, c, d, hash_ip); ++ DELIP_WALK(map, a, btree); ++ DELIP_WALK(btree, b, ctree); ++ DELIP_WALK(ctree, c, dtree); ++ ++ if (dtree->expires[d]) { ++ dtree->expires[d] = 0; ++ map->elements--; ++ return 0; ++ } ++ return -EEXIST; ++} ++ ++static int ++delip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_iptree *req = ++ (struct ip_set_req_iptree *) data; ++ ++ if (size != sizeof(struct ip_set_req_iptree)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iptree), ++ size); ++ return -EINVAL; ++ } ++ return __delip(set, req->ip, hash_ip); ++} ++ ++static int ++delip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __delip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++#define LOOP_WALK_BEGIN(map, i, branch) \ ++ for (i = 0; i < 256; i++) { \ ++ if (!(map)->tree[i]) \ ++ continue; \ ++ branch = (map)->tree[i] ++ ++#define LOOP_WALK_END } ++ ++static void ip_tree_gc(unsigned long ul_set) ++{ ++ struct ip_set *set = (void *) ul_set; ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned int a,b,c,d; ++ unsigned char i,j,k; ++ ++ i = j = k = 0; ++ DP("gc: %s", set->name); ++ write_lock_bh(&set->lock); ++ LOOP_WALK_BEGIN(map, a, btree); ++ LOOP_WALK_BEGIN(btree, b, ctree); ++ LOOP_WALK_BEGIN(ctree, c, dtree); ++ for (d = 0; d < 256; d++) { ++ if (dtree->expires[d]) { ++ DP("gc: %u %u %u %u: expires %lu jiffies %lu", ++ a, b, c, d, ++ dtree->expires[d], jiffies); ++ if (map->timeout ++ && time_before(dtree->expires[d], jiffies)) { ++ dtree->expires[d] = 0; ++ map->elements--; ++ } else ++ k = 1; ++ } ++ } ++ if (k == 0) { ++ DP("gc: %s: leaf %u %u %u empty", ++ set->name, a, b, c); ++ kmem_cache_free(leaf_cachep, dtree); ++ ctree->tree[c] = NULL; ++ } else { ++ DP("gc: %s: leaf %u %u %u not empty", ++ set->name, a, b, c); ++ j = 1; ++ k = 0; ++ } ++ LOOP_WALK_END; ++ if (j == 0) { ++ DP("gc: %s: branch %u %u empty", ++ set->name, a, b); ++ kmem_cache_free(branch_cachep, ctree); ++ btree->tree[b] = NULL; ++ } else { ++ DP("gc: %s: branch %u %u not empty", ++ set->name, a, b); ++ i = 1; ++ j = k = 0; ++ } ++ LOOP_WALK_END; ++ if (i == 0) { ++ DP("gc: %s: branch %u empty", ++ set->name, a); ++ kmem_cache_free(branch_cachep, btree); ++ map->tree[a] = NULL; ++ } else { ++ DP("gc: %s: branch %u not empty", ++ set->name, a); ++ i = j = k = 0; ++ } ++ LOOP_WALK_END; ++ write_unlock_bh(&set->lock); ++ ++ map->gc.expires = jiffies + map->gc_interval * HZ; ++ add_timer(&map->gc); ++} ++ ++static inline void init_gc_timer(struct ip_set *set) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ ++ /* Even if there is no timeout for the entries, ++ * we still have to call gc because delete ++ * do not clean up empty branches */ ++ map->gc_interval = IPTREE_GC_TIME; ++ init_timer(&map->gc); ++ map->gc.data = (unsigned long) set; ++ map->gc.function = ip_tree_gc; ++ map->gc.expires = jiffies + map->gc_interval * HZ; ++ add_timer(&map->gc); ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ struct ip_set_req_iptree_create *req = ++ (struct ip_set_req_iptree_create *) data; ++ struct ip_set_iptree *map; ++ ++ if (size != sizeof(struct ip_set_req_iptree_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_iptree_create), ++ size); ++ return -EINVAL; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_iptree), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_iptree)); ++ return -ENOMEM; ++ } ++ memset(map, 0, sizeof(*map)); ++ map->timeout = req->timeout; ++ map->elements = 0; ++ set->data = map; ++ ++ init_gc_timer(set); ++ ++ return 0; ++} ++ ++static void __flush(struct ip_set_iptree *map) ++{ ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned int a,b,c; ++ ++ LOOP_WALK_BEGIN(map, a, btree); ++ LOOP_WALK_BEGIN(btree, b, ctree); ++ LOOP_WALK_BEGIN(ctree, c, dtree); ++ kmem_cache_free(leaf_cachep, dtree); ++ LOOP_WALK_END; ++ kmem_cache_free(branch_cachep, ctree); ++ LOOP_WALK_END; ++ kmem_cache_free(branch_cachep, btree); ++ LOOP_WALK_END; ++ map->elements = 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ ++ /* gc might be running */ ++ while (!del_timer(&map->gc)) ++ msleep(IPTREE_DESTROY_SLEEP); ++ __flush(map); ++ kfree(map); ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ unsigned int timeout = map->timeout; ++ ++ /* gc might be running */ ++ while (!del_timer(&map->gc)) ++ msleep(IPTREE_DESTROY_SLEEP); ++ __flush(map); ++ memset(map, 0, sizeof(*map)); ++ map->timeout = timeout; ++ ++ init_gc_timer(set); ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_req_iptree_create *header = ++ (struct ip_set_req_iptree_create *) data; ++ ++ header->timeout = map->timeout; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned int a,b,c,d; ++ unsigned int count = 0; ++ ++ LOOP_WALK_BEGIN(map, a, btree); ++ LOOP_WALK_BEGIN(btree, b, ctree); ++ LOOP_WALK_BEGIN(ctree, c, dtree); ++ for (d = 0; d < 256; d++) { ++ if (dtree->expires[d] ++ && (!map->timeout || time_after(dtree->expires[d], jiffies))) ++ count++; ++ } ++ LOOP_WALK_END; ++ LOOP_WALK_END; ++ LOOP_WALK_END; ++ ++ DP("members %u", count); ++ return (count * sizeof(struct ip_set_req_iptree)); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data; ++ struct ip_set_iptreeb *btree; ++ struct ip_set_iptreec *ctree; ++ struct ip_set_iptreed *dtree; ++ unsigned int a,b,c,d; ++ size_t offset = 0; ++ struct ip_set_req_iptree *entry; ++ ++ LOOP_WALK_BEGIN(map, a, btree); ++ LOOP_WALK_BEGIN(btree, b, ctree); ++ LOOP_WALK_BEGIN(ctree, c, dtree); ++ for (d = 0; d < 256; d++) { ++ if (dtree->expires[d] ++ && (!map->timeout || time_after(dtree->expires[d], jiffies))) { ++ entry = (struct ip_set_req_iptree *)(data + offset); ++ entry->ip = ((a << 24) | (b << 16) | (c << 8) | d); ++ entry->timeout = !map->timeout ? 0 ++ : (dtree->expires[d] - jiffies)/HZ; ++ offset += sizeof(struct ip_set_req_iptree); ++ } ++ } ++ LOOP_WALK_END; ++ LOOP_WALK_END; ++ LOOP_WALK_END; ++} ++ ++static struct ip_set_type ip_set_iptree = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_iptree), ++ .addip = &addip, ++ .addip_kernel = &addip_kernel, ++ .delip = &delip, ++ .delip_kernel = &delip_kernel, ++ .testip = &testip, ++ .testip_kernel = &testip_kernel, ++ .header_size = sizeof(struct ip_set_req_iptree_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("iptree type of IP sets"); ++module_param(limit, int, 0600); ++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets"); ++ ++static int __init init(void) ++{ ++ int ret; ++ ++ branch_cachep = kmem_cache_create("ip_set_iptreeb", ++ sizeof(struct ip_set_iptreeb), ++ 0, 0, NULL, NULL); ++ if (!branch_cachep) { ++ printk(KERN_ERR "Unable to create ip_set_iptreeb slab cache\n"); ++ ret = -ENOMEM; ++ goto out; ++ } ++ leaf_cachep = kmem_cache_create("ip_set_iptreed", ++ sizeof(struct ip_set_iptreed), ++ 0, 0, NULL, NULL); ++ if (!leaf_cachep) { ++ printk(KERN_ERR "Unable to create ip_set_iptreed slab cache\n"); ++ ret = -ENOMEM; ++ goto free_branch; ++ } ++ ret = ip_set_register_set_type(&ip_set_iptree); ++ if (ret == 0) ++ goto out; ++ ++ kmem_cache_destroy(leaf_cachep); ++ free_branch: ++ kmem_cache_destroy(branch_cachep); ++ out: ++ return ret; ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_iptree); ++ kmem_cache_destroy(leaf_cachep); ++ kmem_cache_destroy(branch_cachep); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_macipmap.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_macipmap.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_macipmap.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_macipmap.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,353 @@ ++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> ++ * Patrick Schaaf <bof@bof.de> ++ * Martin Josefsson <gandalf@wlug.westbo.se> ++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing an IP set type: the macipmap type */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++#include <linux/if_ether.h> ++#include <linux/vmalloc.h> ++ ++#include <linux/netfilter_ipv4/ip_set_malloc.h> ++#include <linux/netfilter_ipv4/ip_set_macipmap.h> ++ ++static int ++testip(struct ip_set *set, const void *data, size_t size, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_macipmap *map = (struct ip_set_macipmap *) set->data; ++ struct ip_set_macip *table = (struct ip_set_macip *) map->members; ++ struct ip_set_req_macipmap *req = (struct ip_set_req_macipmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_macipmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_macipmap), ++ size); ++ return -EINVAL; ++ } ++ ++ if (req->ip < map->first_ip || req->ip > map->last_ip) ++ return -ERANGE; ++ ++ *hash_ip = req->ip; ++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u", ++ set->name, HIPQUAD(req->ip), HIPQUAD(*hash_ip)); ++ if (test_bit(IPSET_MACIP_ISSET, ++ (void *) &table[req->ip - map->first_ip].flags)) { ++ return (memcmp(req->ethernet, ++ &table[req->ip - map->first_ip].ethernet, ++ ETH_ALEN) == 0); ++ } else { ++ return (map->flags & IPSET_MACIP_MATCHUNSET ? 1 : 0); ++ } ++} ++ ++static int ++testip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ struct ip_set_macip *table = ++ (struct ip_set_macip *) map->members; ++ ip_set_ip_t ip; ++ ++ ip = ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr); ++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u", ++ flags[index] & IPSET_SRC ? "SRC" : "DST", ++ NIPQUAD(skb->nh.iph->saddr), ++ NIPQUAD(skb->nh.iph->daddr)); ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return 0; ++ ++ *hash_ip = ip; ++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u", ++ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip)); ++ if (test_bit(IPSET_MACIP_ISSET, ++ (void *) &table[ip - map->first_ip].flags)) { ++ /* Is mac pointer valid? ++ * If so, compare... */ ++ return (skb->mac.raw >= skb->head ++ && (skb->mac.raw + ETH_HLEN) <= skb->data ++ && (memcmp(eth_hdr(skb)->h_source, ++ &table[ip - map->first_ip].ethernet, ++ ETH_ALEN) == 0)); ++ } else { ++ return (map->flags & IPSET_MACIP_MATCHUNSET ? 1 : 0); ++ } ++} ++ ++/* returns 0 on success */ ++static inline int ++__addip(struct ip_set *set, ++ ip_set_ip_t ip, unsigned char *ethernet, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ struct ip_set_macip *table = ++ (struct ip_set_macip *) map->members; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ if (test_and_set_bit(IPSET_MACIP_ISSET, ++ (void *) &table[ip - map->first_ip].flags)) ++ return -EEXIST; ++ ++ *hash_ip = ip; ++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip)); ++ memcpy(&table[ip - map->first_ip].ethernet, ethernet, ETH_ALEN); ++ return 0; ++} ++ ++static int ++addip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_macipmap *req = ++ (struct ip_set_req_macipmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_macipmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_macipmap), ++ size); ++ return -EINVAL; ++ } ++ return __addip(set, req->ip, req->ethernet, hash_ip); ++} ++ ++static int ++addip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ ip_set_ip_t ip; ++ ++ ip = ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr); ++ ++ if (!(skb->mac.raw >= skb->head ++ && (skb->mac.raw + ETH_HLEN) <= skb->data)) ++ return -EINVAL; ++ ++ return __addip(set, ip, eth_hdr(skb)->h_source, hash_ip); ++} ++ ++static inline int ++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ struct ip_set_macip *table = ++ (struct ip_set_macip *) map->members; ++ ++ if (ip < map->first_ip || ip > map->last_ip) ++ return -ERANGE; ++ if (!test_and_clear_bit(IPSET_MACIP_ISSET, ++ (void *)&table[ip - map->first_ip].flags)) ++ return -EEXIST; ++ ++ *hash_ip = ip; ++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip)); ++ return 0; ++} ++ ++static int ++delip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_macipmap *req = ++ (struct ip_set_req_macipmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_macipmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_macipmap), ++ size); ++ return -EINVAL; ++ } ++ return __delip(set, req->ip, hash_ip); ++} ++ ++static int ++delip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __delip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static inline size_t members_size(ip_set_id_t from, ip_set_id_t to) ++{ ++ return (size_t)((to - from + 1) * sizeof(struct ip_set_macip)); ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ int newbytes; ++ struct ip_set_req_macipmap_create *req = ++ (struct ip_set_req_macipmap_create *) data; ++ struct ip_set_macipmap *map; ++ ++ if (size != sizeof(struct ip_set_req_macipmap_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_macipmap_create), ++ size); ++ return -EINVAL; ++ } ++ ++ DP("from %u.%u.%u.%u to %u.%u.%u.%u", ++ HIPQUAD(req->from), HIPQUAD(req->to)); ++ ++ if (req->from > req->to) { ++ DP("bad ip range"); ++ return -ENOEXEC; ++ } ++ ++ if (req->to - req->from > MAX_RANGE) { ++ ip_set_printk("range too big (max %d addresses)", ++ MAX_RANGE+1); ++ return -ENOEXEC; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_macipmap), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_macipmap)); ++ return -ENOMEM; ++ } ++ map->flags = req->flags; ++ map->first_ip = req->from; ++ map->last_ip = req->to; ++ newbytes = members_size(map->first_ip, map->last_ip); ++ map->members = ip_set_malloc(newbytes); ++ DP("members: %u %p", newbytes, map->members); ++ if (!map->members) { ++ DP("out of memory for %d bytes", newbytes); ++ kfree(map); ++ return -ENOMEM; ++ } ++ memset(map->members, 0, newbytes); ++ ++ set->data = map; ++ return 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ ++ ip_set_free(map->members, members_size(map->first_ip, map->last_ip)); ++ kfree(map); ++ ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ memset(map->members, 0, members_size(map->first_ip, map->last_ip)); ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ struct ip_set_req_macipmap_create *header = ++ (struct ip_set_req_macipmap_create *) data; ++ ++ DP("list_header %x %x %u", map->first_ip, map->last_ip, ++ map->flags); ++ ++ header->from = map->first_ip; ++ header->to = map->last_ip; ++ header->flags = map->flags; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ ++ DP("%u", members_size(map->first_ip, map->last_ip)); ++ return members_size(map->first_ip, map->last_ip); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_macipmap *map = ++ (struct ip_set_macipmap *) set->data; ++ ++ int bytes = members_size(map->first_ip, map->last_ip); ++ ++ DP("members: %u %p", bytes, map->members); ++ memcpy(data, map->members, bytes); ++} ++ ++static struct ip_set_type ip_set_macipmap = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_macipmap), ++ .addip = &addip, ++ .addip_kernel = &addip_kernel, ++ .delip = &delip, ++ .delip_kernel = &delip_kernel, ++ .testip = &testip, ++ .testip_kernel = &testip_kernel, ++ .header_size = sizeof(struct ip_set_req_macipmap_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("macipmap type of IP sets"); ++ ++static int __init init(void) ++{ ++ init_max_malloc_size(); ++ return ip_set_register_set_type(&ip_set_macipmap); ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_macipmap); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_nethash.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_nethash.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_nethash.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_nethash.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,481 @@ ++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing a cidr nethash set */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++#include <linux/vmalloc.h> ++#include <linux/random.h> ++ ++#include <net/ip.h> ++ ++#include <linux/netfilter_ipv4/ip_set_malloc.h> ++#include <linux/netfilter_ipv4/ip_set_nethash.h> ++#include <linux/netfilter_ipv4/ip_set_jhash.h> ++ ++static int limit = MAX_RANGE; ++ ++static inline __u32 ++jhash_ip(const struct ip_set_nethash *map, uint16_t i, ip_set_ip_t ip) ++{ ++ return jhash_1word(ip, *(((uint32_t *) map->initval) + i)); ++} ++ ++static inline __u32 ++hash_id_cidr(struct ip_set_nethash *map, ++ ip_set_ip_t ip, ++ unsigned char cidr, ++ ip_set_ip_t *hash_ip) ++{ ++ __u32 id; ++ u_int16_t i; ++ ip_set_ip_t *elem; ++ ++ *hash_ip = pack(ip, cidr); ++ ++ for (i = 0; i < map->probes; i++) { ++ id = jhash_ip(map, i, *hash_ip) % map->hashsize; ++ DP("hash key: %u", id); ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id); ++ if (*elem == *hash_ip) ++ return id; ++ } ++ return UINT_MAX; ++} ++ ++static inline __u32 ++hash_id(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ __u32 id = UINT_MAX; ++ int i; ++ ++ for (i = 0; i < 30 && map->cidr[i]; i++) { ++ id = hash_id_cidr(map, ip, map->cidr[i], hash_ip); ++ if (id != UINT_MAX) ++ break; ++ } ++ return id; ++} ++ ++static inline int ++__testip_cidr(struct ip_set *set, ip_set_ip_t ip, unsigned char cidr, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ ++ return (ip && hash_id_cidr(map, ip, cidr, hash_ip) != UINT_MAX); ++} ++ ++static inline int ++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip) ++{ ++ return (ip && hash_id(set, ip, hash_ip) != UINT_MAX); ++} ++ ++static int ++testip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_nethash *req = ++ (struct ip_set_req_nethash *) data; ++ ++ if (size != sizeof(struct ip_set_req_nethash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_nethash), ++ size); ++ return -EINVAL; ++ } ++ return (req->cidr == 32 ? __testip(set, req->ip, hash_ip) ++ : __testip_cidr(set, req->ip, req->cidr, hash_ip)); ++} ++ ++static int ++testip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ return __testip(set, ++ ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr), ++ hash_ip); ++} ++ ++static inline int ++__addip_base(struct ip_set_nethash *map, ip_set_ip_t ip) ++{ ++ __u32 probe; ++ u_int16_t i; ++ ip_set_ip_t *elem; ++ ++ for (i = 0; i < map->probes; i++) { ++ probe = jhash_ip(map, i, ip) % map->hashsize; ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe); ++ if (*elem == ip) ++ return -EEXIST; ++ if (!*elem) { ++ *elem = ip; ++ map->elements++; ++ return 0; ++ } ++ } ++ /* Trigger rehashing */ ++ return -EAGAIN; ++} ++ ++static inline int ++__addip(struct ip_set_nethash *map, ip_set_ip_t ip, unsigned char cidr, ++ ip_set_ip_t *hash_ip) ++{ ++ if (!ip || map->elements > limit) ++ return -ERANGE; ++ ++ *hash_ip = pack(ip, cidr); ++ DP("%u.%u.%u.%u/%u, %u.%u.%u.%u", HIPQUAD(ip), cidr, HIPQUAD(*hash_ip)); ++ ++ return __addip_base(map, *hash_ip); ++} ++ ++static void ++update_cidr_sizes(struct ip_set_nethash *map, unsigned char cidr) ++{ ++ unsigned char next; ++ int i; ++ ++ for (i = 0; i < 30 && map->cidr[i]; i++) { ++ if (map->cidr[i] == cidr) { ++ return; ++ } else if (map->cidr[i] < cidr) { ++ next = map->cidr[i]; ++ map->cidr[i] = cidr; ++ cidr = next; ++ } ++ } ++ if (i < 30) ++ map->cidr[i] = cidr; ++} ++ ++static int ++addip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_nethash *req = ++ (struct ip_set_req_nethash *) data; ++ int ret; ++ ++ if (size != sizeof(struct ip_set_req_nethash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_nethash), ++ size); ++ return -EINVAL; ++ } ++ ret = __addip((struct ip_set_nethash *) set->data, ++ req->ip, req->cidr, hash_ip); ++ ++ if (ret == 0) ++ update_cidr_sizes((struct ip_set_nethash *) set->data, ++ req->cidr); ++ ++ return ret; ++} ++ ++static int ++addip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ int ret = -ERANGE; ++ ip_set_ip_t ip = ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr); ++ ++ if (map->cidr[0]) ++ ret = __addip(map, ip, map->cidr[0], hash_ip); ++ ++ return ret; ++} ++ ++static int retry(struct ip_set *set) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ ip_set_ip_t *elem; ++ void *members; ++ u_int32_t i, hashsize = map->hashsize; ++ int res; ++ struct ip_set_nethash *tmp; ++ ++ if (map->resize == 0) ++ return -ERANGE; ++ ++ again: ++ res = 0; ++ ++ /* Calculate new parameters */ ++ hashsize += (hashsize * map->resize)/100; ++ if (hashsize == map->hashsize) ++ hashsize++; ++ ++ ip_set_printk("rehashing of set %s triggered: " ++ "hashsize grows from %u to %u", ++ set->name, map->hashsize, hashsize); ++ ++ tmp = kmalloc(sizeof(struct ip_set_nethash) ++ + map->probes * sizeof(uint32_t), GFP_ATOMIC); ++ if (!tmp) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_nethash) ++ + map->probes * sizeof(uint32_t)); ++ return -ENOMEM; ++ } ++ tmp->members = harray_malloc(hashsize, sizeof(ip_set_ip_t), GFP_ATOMIC); ++ if (!tmp->members) { ++ DP("out of memory for %d bytes", hashsize * sizeof(ip_set_ip_t)); ++ kfree(tmp); ++ return -ENOMEM; ++ } ++ tmp->hashsize = hashsize; ++ tmp->elements = 0; ++ tmp->probes = map->probes; ++ tmp->resize = map->resize; ++ memcpy(tmp->initval, map->initval, map->probes * sizeof(uint32_t)); ++ memcpy(tmp->cidr, map->cidr, 30 * sizeof(unsigned char)); ++ ++ write_lock_bh(&set->lock); ++ map = (struct ip_set_nethash *) set->data; /* Play safe */ ++ for (i = 0; i < map->hashsize && res == 0; i++) { ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i); ++ if (*elem) ++ res = __addip_base(tmp, *elem); ++ } ++ if (res) { ++ /* Failure, try again */ ++ write_unlock_bh(&set->lock); ++ harray_free(tmp->members); ++ kfree(tmp); ++ goto again; ++ } ++ ++ /* Success at resizing! */ ++ members = map->members; ++ ++ map->hashsize = tmp->hashsize; ++ map->members = tmp->members; ++ write_unlock_bh(&set->lock); ++ ++ harray_free(members); ++ kfree(tmp); ++ ++ return 0; ++} ++ ++static inline int ++__delip(struct ip_set_nethash *map, ip_set_ip_t ip, unsigned char cidr, ++ ip_set_ip_t *hash_ip) ++{ ++ ip_set_ip_t id, *elem; ++ ++ if (!ip) ++ return -ERANGE; ++ ++ id = hash_id_cidr(map, ip, cidr, hash_ip); ++ if (id == UINT_MAX) ++ return -EEXIST; ++ ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id); ++ *elem = 0; ++ map->elements--; ++ return 0; ++} ++ ++static int ++delip(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_ip) ++{ ++ struct ip_set_req_nethash *req = ++ (struct ip_set_req_nethash *) data; ++ ++ if (size != sizeof(struct ip_set_req_nethash)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_nethash), ++ size); ++ return -EINVAL; ++ } ++ /* TODO: no garbage collection in map->cidr */ ++ return __delip((struct ip_set_nethash *) set->data, ++ req->ip, req->cidr, hash_ip); ++} ++ ++static int ++delip_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_ip, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ int ret = -ERANGE; ++ ip_set_ip_t ip = ntohl(flags[index] & IPSET_SRC ++ ? skb->nh.iph->saddr ++ : skb->nh.iph->daddr); ++ ++ if (map->cidr[0]) ++ ret = __delip(map, ip, map->cidr[0], hash_ip); ++ ++ return ret; ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ struct ip_set_req_nethash_create *req = ++ (struct ip_set_req_nethash_create *) data; ++ struct ip_set_nethash *map; ++ uint16_t i; ++ ++ if (size != sizeof(struct ip_set_req_nethash_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_nethash_create), ++ size); ++ return -EINVAL; ++ } ++ ++ if (req->hashsize < 1) { ++ ip_set_printk("hashsize too small"); ++ return -ENOEXEC; ++ } ++ if (req->probes < 1) { ++ ip_set_printk("probes too small"); ++ return -ENOEXEC; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_nethash) ++ + req->probes * sizeof(uint32_t), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_nethash) ++ + req->probes * sizeof(uint32_t)); ++ return -ENOMEM; ++ } ++ for (i = 0; i < req->probes; i++) ++ get_random_bytes(((uint32_t *) map->initval)+i, 4); ++ map->elements = 0; ++ map->hashsize = req->hashsize; ++ map->probes = req->probes; ++ map->resize = req->resize; ++ memset(map->cidr, 0, 30 * sizeof(unsigned char)); ++ map->members = harray_malloc(map->hashsize, sizeof(ip_set_ip_t), GFP_KERNEL); ++ if (!map->members) { ++ DP("out of memory for %d bytes", map->hashsize * sizeof(ip_set_ip_t)); ++ kfree(map); ++ return -ENOMEM; ++ } ++ ++ set->data = map; ++ return 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ ++ harray_free(map->members); ++ kfree(map); ++ ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ harray_flush(map->members, map->hashsize, sizeof(ip_set_ip_t)); ++ memset(map->cidr, 0, 30 * sizeof(unsigned char)); ++ map->elements = 0; ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ struct ip_set_req_nethash_create *header = ++ (struct ip_set_req_nethash_create *) data; ++ ++ header->hashsize = map->hashsize; ++ header->probes = map->probes; ++ header->resize = map->resize; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ ++ return (map->hashsize * sizeof(ip_set_ip_t)); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data; ++ ip_set_ip_t i, *elem; ++ ++ for (i = 0; i < map->hashsize; i++) { ++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i); ++ ((ip_set_ip_t *)data)[i] = *elem; ++ } ++} ++ ++static struct ip_set_type ip_set_nethash = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_nethash), ++ .addip = &addip, ++ .addip_kernel = &addip_kernel, ++ .retry = &retry, ++ .delip = &delip, ++ .delip_kernel = &delip_kernel, ++ .testip = &testip, ++ .testip_kernel = &testip_kernel, ++ .header_size = sizeof(struct ip_set_req_nethash_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("nethash type of IP sets"); ++module_param(limit, int, 0600); ++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets"); ++ ++static int __init init(void) ++{ ++ return ip_set_register_set_type(&ip_set_nethash); ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_nethash); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ip_set_portmap.c linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_portmap.c +--- linux-2.6.21.1/net/ipv4/netfilter/ip_set_portmap.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ip_set_portmap.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,334 @@ ++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module implementing a port set type as a bitmap */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/tcp.h> ++#include <linux/udp.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/errno.h> ++#include <asm/uaccess.h> ++#include <asm/bitops.h> ++#include <linux/spinlock.h> ++ ++#include <net/ip.h> ++ ++#include <linux/netfilter_ipv4/ip_set_portmap.h> ++ ++/* We must handle non-linear skbs */ ++static inline ip_set_ip_t ++get_port(const struct sk_buff *skb, u_int32_t flags) ++{ ++ struct iphdr *iph = skb->nh.iph; ++ u_int16_t offset = ntohs(iph->frag_off) & IP_OFFSET; ++ ++ switch (iph->protocol) { ++ case IPPROTO_TCP: { ++ struct tcphdr tcph; ++ ++ /* See comments at tcp_match in ip_tables.c */ ++ if (offset) ++ return INVALID_PORT; ++ ++ if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &tcph, sizeof(tcph)) < 0) ++ /* No choice either */ ++ return INVALID_PORT; ++ ++ return ntohs(flags & IPSET_SRC ? ++ tcph.source : tcph.dest); ++ } ++ case IPPROTO_UDP: { ++ struct udphdr udph; ++ ++ if (offset) ++ return INVALID_PORT; ++ ++ if (skb_copy_bits(skb, skb->nh.iph->ihl*4, &udph, sizeof(udph)) < 0) ++ /* No choice either */ ++ return INVALID_PORT; ++ ++ return ntohs(flags & IPSET_SRC ? ++ udph.source : udph.dest); ++ } ++ default: ++ return INVALID_PORT; ++ } ++} ++ ++static inline int ++__testport(struct ip_set *set, ip_set_ip_t port, ip_set_ip_t *hash_port) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ ++ if (port < map->first_port || port > map->last_port) ++ return -ERANGE; ++ ++ *hash_port = port; ++ DP("set: %s, port:%u, %u", set->name, port, *hash_port); ++ return !!test_bit(port - map->first_port, map->members); ++} ++ ++static int ++testport(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_port) ++{ ++ struct ip_set_req_portmap *req = ++ (struct ip_set_req_portmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_portmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_portmap), ++ size); ++ return -EINVAL; ++ } ++ return __testport(set, req->port, hash_port); ++} ++ ++static int ++testport_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_port, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ int res; ++ ip_set_ip_t port = get_port(skb, flags[index]); ++ ++ DP("flag %s port %u", flags[index] & IPSET_SRC ? "SRC" : "DST", port); ++ if (port == INVALID_PORT) ++ return 0; ++ ++ res = __testport(set, port, hash_port); ++ ++ return (res < 0 ? 0 : res); ++} ++ ++static inline int ++__addport(struct ip_set *set, ip_set_ip_t port, ip_set_ip_t *hash_port) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ ++ if (port < map->first_port || port > map->last_port) ++ return -ERANGE; ++ if (test_and_set_bit(port - map->first_port, map->members)) ++ return -EEXIST; ++ ++ *hash_port = port; ++ DP("port %u", port); ++ return 0; ++} ++ ++static int ++addport(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_port) ++{ ++ struct ip_set_req_portmap *req = ++ (struct ip_set_req_portmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_portmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_portmap), ++ size); ++ return -EINVAL; ++ } ++ return __addport(set, req->port, hash_port); ++} ++ ++static int ++addport_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_port, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ ip_set_ip_t port = get_port(skb, flags[index]); ++ ++ if (port == INVALID_PORT) ++ return -EINVAL; ++ ++ return __addport(set, port, hash_port); ++} ++ ++static inline int ++__delport(struct ip_set *set, ip_set_ip_t port, ip_set_ip_t *hash_port) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ ++ if (port < map->first_port || port > map->last_port) ++ return -ERANGE; ++ if (!test_and_clear_bit(port - map->first_port, map->members)) ++ return -EEXIST; ++ ++ *hash_port = port; ++ DP("port %u", port); ++ return 0; ++} ++ ++static int ++delport(struct ip_set *set, const void *data, size_t size, ++ ip_set_ip_t *hash_port) ++{ ++ struct ip_set_req_portmap *req = ++ (struct ip_set_req_portmap *) data; ++ ++ if (size != sizeof(struct ip_set_req_portmap)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_portmap), ++ size); ++ return -EINVAL; ++ } ++ return __delport(set, req->port, hash_port); ++} ++ ++static int ++delport_kernel(struct ip_set *set, ++ const struct sk_buff *skb, ++ ip_set_ip_t *hash_port, ++ const u_int32_t *flags, ++ unsigned char index) ++{ ++ ip_set_ip_t port = get_port(skb, flags[index]); ++ ++ if (port == INVALID_PORT) ++ return -EINVAL; ++ ++ return __delport(set, port, hash_port); ++} ++ ++static int create(struct ip_set *set, const void *data, size_t size) ++{ ++ int newbytes; ++ struct ip_set_req_portmap_create *req = ++ (struct ip_set_req_portmap_create *) data; ++ struct ip_set_portmap *map; ++ ++ if (size != sizeof(struct ip_set_req_portmap_create)) { ++ ip_set_printk("data length wrong (want %zu, have %zu)", ++ sizeof(struct ip_set_req_portmap_create), ++ size); ++ return -EINVAL; ++ } ++ ++ DP("from %u to %u", req->from, req->to); ++ ++ if (req->from > req->to) { ++ DP("bad port range"); ++ return -ENOEXEC; ++ } ++ ++ if (req->to - req->from > MAX_RANGE) { ++ ip_set_printk("range too big (max %d ports)", ++ MAX_RANGE+1); ++ return -ENOEXEC; ++ } ++ ++ map = kmalloc(sizeof(struct ip_set_portmap), GFP_KERNEL); ++ if (!map) { ++ DP("out of memory for %d bytes", ++ sizeof(struct ip_set_portmap)); ++ return -ENOMEM; ++ } ++ map->first_port = req->from; ++ map->last_port = req->to; ++ newbytes = bitmap_bytes(req->from, req->to); ++ map->members = kmalloc(newbytes, GFP_KERNEL); ++ if (!map->members) { ++ DP("out of memory for %d bytes", newbytes); ++ kfree(map); ++ return -ENOMEM; ++ } ++ memset(map->members, 0, newbytes); ++ ++ set->data = map; ++ return 0; ++} ++ ++static void destroy(struct ip_set *set) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ ++ kfree(map->members); ++ kfree(map); ++ ++ set->data = NULL; ++} ++ ++static void flush(struct ip_set *set) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ memset(map->members, 0, bitmap_bytes(map->first_port, map->last_port)); ++} ++ ++static void list_header(const struct ip_set *set, void *data) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ struct ip_set_req_portmap_create *header = ++ (struct ip_set_req_portmap_create *) data; ++ ++ DP("list_header %u %u", map->first_port, map->last_port); ++ ++ header->from = map->first_port; ++ header->to = map->last_port; ++} ++ ++static int list_members_size(const struct ip_set *set) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ ++ return bitmap_bytes(map->first_port, map->last_port); ++} ++ ++static void list_members(const struct ip_set *set, void *data) ++{ ++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data; ++ int bytes = bitmap_bytes(map->first_port, map->last_port); ++ ++ memcpy(data, map->members, bytes); ++} ++ ++static struct ip_set_type ip_set_portmap = { ++ .typename = SETTYPE_NAME, ++ .features = IPSET_TYPE_PORT | IPSET_DATA_SINGLE, ++ .protocol_version = IP_SET_PROTOCOL_VERSION, ++ .create = &create, ++ .destroy = &destroy, ++ .flush = &flush, ++ .reqsize = sizeof(struct ip_set_req_portmap), ++ .addip = &addport, ++ .addip_kernel = &addport_kernel, ++ .delip = &delport, ++ .delip_kernel = &delport_kernel, ++ .testip = &testport, ++ .testip_kernel = &testport_kernel, ++ .header_size = sizeof(struct ip_set_req_portmap_create), ++ .list_header = &list_header, ++ .list_members_size = &list_members_size, ++ .list_members = &list_members, ++ .me = THIS_MODULE, ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("portmap type of IP sets"); ++ ++static int __init init(void) ++{ ++ return ip_set_register_set_type(&ip_set_portmap); ++} ++ ++static void __exit fini(void) ++{ ++ /* FIXME: possible race with ip_set_create() */ ++ ip_set_unregister_set_type(&ip_set_portmap); ++} ++ ++module_init(init); ++module_exit(fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ipt_set.c linux-2.6.21.1.new/net/ipv4/netfilter/ipt_set.c +--- linux-2.6.21.1/net/ipv4/netfilter/ipt_set.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ipt_set.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,150 @@ ++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> ++ * Patrick Schaaf <bof@bof.de> ++ * Martin Josefsson <gandalf@wlug.westbo.se> ++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* Kernel module to match an IP set. */ ++ ++#include <linux/module.h> ++#include <linux/ip.h> ++#include <linux/skbuff.h> ++#include <linux/version.h> ++ ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ip_set.h> ++#include <linux/netfilter_ipv4/ipt_set.h> ++ ++static inline int ++match_set(const struct ipt_set_info *info, ++ const struct sk_buff *skb, ++ int inv) ++{ ++ if (ip_set_testip_kernel(info->index, skb, info->flags)) ++ inv = !inv; ++ return inv; ++} ++ ++static int ++match(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_match *match, ++#endif ++ const void *matchinfo, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ int offset, unsigned int protoff, int *hotdrop) ++#else ++ int offset, int *hotdrop) ++#endif ++{ ++ const struct ipt_set_info_match *info = matchinfo; ++ ++ return match_set(&info->match_set, ++ skb, ++ info->match_set.flags[0] & IPSET_MATCH_INV); ++} ++ ++static int ++checkentry(const char *tablename, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ const void *inf, ++#else ++ const struct ipt_ip *ip, ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_match *match, ++#endif ++ void *matchinfo, ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ unsigned int matchsize, ++#endif ++ unsigned int hook_mask) ++{ ++ struct ipt_set_info_match *info = ++ (struct ipt_set_info_match *) matchinfo; ++ ip_set_id_t index; ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) { ++ ip_set_printk("invalid matchsize %d", matchsize); ++ return 0; ++ } ++#endif ++ ++ index = ip_set_get_byindex(info->match_set.index); ++ ++ if (index == IP_SET_INVALID_ID) { ++ ip_set_printk("Cannot find set indentified by id %u to match", ++ info->match_set.index); ++ return 0; /* error */ ++ } ++ if (info->match_set.flags[IP_SET_MAX_BINDINGS] != 0) { ++ ip_set_printk("That's nasty!"); ++ return 0; /* error */ ++ } ++ ++ return 1; ++} ++ ++static void destroy( ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_match *match, ++#endif ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ void *matchinfo, unsigned int matchsize) ++#else ++ void *matchinfo) ++#endif ++{ ++ struct ipt_set_info_match *info = matchinfo; ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) { ++ ip_set_printk("invalid matchsize %d", matchsize); ++ return; ++ } ++#endif ++ ip_set_put(info->match_set.index); ++} ++ ++static struct ipt_match set_match = { ++ .name = "set", ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) ++ .family = AF_INET, ++#endif ++ .match = &match, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ .matchsize = sizeof(struct ipt_set_info_match), ++#endif ++ .checkentry = &checkentry, ++ .destroy = &destroy, ++ .me = THIS_MODULE ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("iptables IP set match module"); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) ++#define ipt_register_match xt_register_match ++#define ipt_unregister_match xt_unregister_match ++#endif ++ ++static int __init ipt_ipset_init(void) ++{ ++ return ipt_register_match(&set_match); ++} ++ ++static void __exit ipt_ipset_fini(void) ++{ ++ ipt_unregister_match(&set_match); ++} ++ ++module_init(ipt_ipset_init); ++module_exit(ipt_ipset_fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/ipt_SET.c linux-2.6.21.1.new/net/ipv4/netfilter/ipt_SET.c +--- linux-2.6.21.1/net/ipv4/netfilter/ipt_SET.c 1969-12-31 18:00:00.000000000 -0600 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/ipt_SET.c 2007-06-08 16:29:31.833808500 -0500 +@@ -0,0 +1,168 @@ ++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu> ++ * Patrick Schaaf <bof@bof.de> ++ * Martin Josefsson <gandalf@wlug.westbo.se> ++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* ipt_SET.c - netfilter target to manipulate IP sets */ ++ ++#include <linux/types.h> ++#include <linux/ip.h> ++#include <linux/timer.h> ++#include <linux/module.h> ++#include <linux/netfilter.h> ++#include <linux/netdevice.h> ++#include <linux/if.h> ++#include <linux/inetdevice.h> ++#include <linux/version.h> ++#include <net/protocol.h> ++#include <net/checksum.h> ++#include <linux/netfilter_ipv4.h> ++#include <linux/netfilter_ipv4/ip_nat_rule.h> ++#include <linux/netfilter_ipv4/ipt_set.h> ++ ++static unsigned int ++target(struct sk_buff **pskb, ++ const struct net_device *in, ++ const struct net_device *out, ++ unsigned int hooknum, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ const void *targinfo, ++ void *userinfo) ++#else ++ const void *targinfo) ++#endif ++{ ++ const struct ipt_set_info_target *info = targinfo; ++ ++ if (info->add_set.index != IP_SET_INVALID_ID) ++ ip_set_addip_kernel(info->add_set.index, ++ *pskb, ++ info->add_set.flags); ++ if (info->del_set.index != IP_SET_INVALID_ID) ++ ip_set_delip_kernel(info->del_set.index, ++ *pskb, ++ info->del_set.flags); ++ ++ return IPT_CONTINUE; ++} ++ ++static int ++checkentry(const char *tablename, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ const void *e, ++#else ++ const struct ipt_entry *e, ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++ void *targinfo, ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ unsigned int targinfosize, ++#endif ++ unsigned int hook_mask) ++{ ++ struct ipt_set_info_target *info = ++ (struct ipt_set_info_target *) targinfo; ++ ip_set_id_t index; ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ if (targinfosize != IPT_ALIGN(sizeof(*info))) { ++ DP("bad target info size %u", targinfosize); ++ return 0; ++ } ++#endif ++ ++ if (info->add_set.index != IP_SET_INVALID_ID) { ++ index = ip_set_get_byindex(info->add_set.index); ++ if (index == IP_SET_INVALID_ID) { ++ ip_set_printk("cannot find add_set index %u as target", ++ info->add_set.index); ++ return 0; /* error */ ++ } ++ } ++ ++ if (info->del_set.index != IP_SET_INVALID_ID) { ++ index = ip_set_get_byindex(info->del_set.index); ++ if (index == IP_SET_INVALID_ID) { ++ ip_set_printk("cannot find del_set index %u as target", ++ info->del_set.index); ++ return 0; /* error */ ++ } ++ } ++ if (info->add_set.flags[IP_SET_MAX_BINDINGS] != 0 ++ || info->del_set.flags[IP_SET_MAX_BINDINGS] != 0) { ++ ip_set_printk("That's nasty!"); ++ return 0; /* error */ ++ } ++ ++ return 1; ++} ++ ++static void destroy( ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ void *targetinfo, unsigned int targetsize) ++#else ++ void *targetinfo) ++#endif ++{ ++ struct ipt_set_info_target *info = targetinfo; ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ if (targetsize != IPT_ALIGN(sizeof(struct ipt_set_info_target))) { ++ ip_set_printk("invalid targetsize %d", targetsize); ++ return; ++ } ++#endif ++ if (info->add_set.index != IP_SET_INVALID_ID) ++ ip_set_put(info->add_set.index); ++ if (info->del_set.index != IP_SET_INVALID_ID) ++ ip_set_put(info->del_set.index); ++} ++ ++static struct ipt_target SET_target = { ++ .name = "SET", ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) ++ .family = AF_INET, ++#endif ++ .target = target, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ .targetsize = sizeof(struct ipt_set_info_target), ++#endif ++ .checkentry = checkentry, ++ .destroy = destroy, ++ .me = THIS_MODULE ++}; ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>"); ++MODULE_DESCRIPTION("iptables IP set target module"); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21) ++#define ipt_register_target xt_register_target ++#define ipt_unregister_target xt_unregister_target ++#endif ++ ++static int __init ipt_SET_init(void) ++{ ++ return ipt_register_target(&SET_target); ++} ++ ++static void __exit ipt_SET_fini(void) ++{ ++ ipt_unregister_target(&SET_target); ++} ++ ++module_init(ipt_SET_init); ++module_exit(ipt_SET_fini); +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/Kconfig linux-2.6.21.1.new/net/ipv4/netfilter/Kconfig +--- linux-2.6.21.1/net/ipv4/netfilter/Kconfig 2007-04-27 16:49:26.000000000 -0500 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/Kconfig 2007-06-08 16:29:31.833808500 -0500 +@@ -657,5 +657,114 @@ + Allows altering the ARP packet payload: source and destination + hardware and network addresses. + ++config IP_NF_SET ++ tristate "IP set support" ++ depends on INET && NETFILTER ++ help ++ This option adds IP set support to the kernel. ++ In order to define and use sets, you need the userspace utility ++ ipset(8). ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_MAX ++ int "Maximum number of IP sets" ++ default 256 ++ range 2 65534 ++ depends on IP_NF_SET ++ help ++ You can define here default value of the maximum number ++ of IP sets for the kernel. ++ ++ The value can be overriden by the 'max_sets' module ++ parameter of the 'ip_set' module. ++ ++config IP_NF_SET_HASHSIZE ++ int "Hash size for bindings of IP sets" ++ default 1024 ++ depends on IP_NF_SET ++ help ++ You can define here default value of the hash size for ++ bindings of IP sets. ++ ++ The value can be overriden by the 'hash_size' module ++ parameter of the 'ip_set' module. ++ ++config IP_NF_SET_IPMAP ++ tristate "ipmap set support" ++ depends on IP_NF_SET ++ help ++ This option adds the ipmap set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_MACIPMAP ++ tristate "macipmap set support" ++ depends on IP_NF_SET ++ help ++ This option adds the macipmap set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_PORTMAP ++ tristate "portmap set support" ++ depends on IP_NF_SET ++ help ++ This option adds the portmap set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_IPHASH ++ tristate "iphash set support" ++ depends on IP_NF_SET ++ help ++ This option adds the iphash set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_NETHASH ++ tristate "nethash set support" ++ depends on IP_NF_SET ++ help ++ This option adds the nethash set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_IPPORTHASH ++ tristate "ipporthash set support" ++ depends on IP_NF_SET ++ help ++ This option adds the ipporthash set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_SET_IPTREE ++ tristate "iptree set support" ++ depends on IP_NF_SET ++ help ++ This option adds the iptree set type support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_MATCH_SET ++ tristate "set match support" ++ depends on IP_NF_SET ++ help ++ Set matching matches against given IP sets. ++ You need the ipset utility to create and set up the sets. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++config IP_NF_TARGET_SET ++ tristate "SET target support" ++ depends on IP_NF_SET ++ help ++ The SET target makes possible to add/delete entries ++ in IP sets. ++ You need the ipset utility to create and set up the sets. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ ++ + endmenu + +diff -ruN linux-2.6.21.1/net/ipv4/netfilter/Makefile linux-2.6.21.1.new/net/ipv4/netfilter/Makefile +--- linux-2.6.21.1/net/ipv4/netfilter/Makefile 2007-04-27 16:49:26.000000000 -0500 ++++ linux-2.6.21.1.new/net/ipv4/netfilter/Makefile 2007-06-08 16:29:31.837808750 -0500 +@@ -90,6 +90,7 @@ + obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o + obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o + obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o ++obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set.o + obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o + + # targets +@@ -105,6 +106,17 @@ + obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o + obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o + obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o ++obj-$(CONFIG_IP_NF_TARGET_SET) += ipt_SET.o ++ ++# sets ++obj-$(CONFIG_IP_NF_SET) += ip_set.o ++obj-$(CONFIG_IP_NF_SET_IPMAP) += ip_set_ipmap.o ++obj-$(CONFIG_IP_NF_SET_PORTMAP) += ip_set_portmap.o ++obj-$(CONFIG_IP_NF_SET_MACIPMAP) += ip_set_macipmap.o ++obj-$(CONFIG_IP_NF_SET_IPHASH) += ip_set_iphash.o ++obj-$(CONFIG_IP_NF_SET_NETHASH) += ip_set_nethash.o ++obj-$(CONFIG_IP_NF_SET_IPPORTHASH) += ip_set_ipporthash.o ++obj-$(CONFIG_IP_NF_SET_IPTREE) += ip_set_iptree.o + + # generic ARP tables + obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o diff --git a/target/linux/generic-2.6/patches-2.6.22/140-netfilter_time.patch b/target/linux/generic-2.6/patches-2.6.22/140-netfilter_time.patch new file mode 100644 index 0000000000..086eb97cd3 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/140-netfilter_time.patch @@ -0,0 +1,243 @@ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_time.h linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_time.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_time.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_time.h 2007-05-26 20:31:03.596402160 +0200 +@@ -0,0 +1,18 @@ ++#ifndef __ipt_time_h_included__ ++#define __ipt_time_h_included__ ++ ++ ++struct ipt_time_info { ++ u_int8_t days_match; /* 1 bit per day. -SMTWTFS */ ++ u_int16_t time_start; /* 0 < time_start < 23*60+59 = 1439 */ ++ u_int16_t time_stop; /* 0:0 < time_stat < 23:59 */ ++ ++ /* FIXME: Keep this one for userspace iptables binary compability: */ ++ u_int8_t kerneltime; /* ignore skb time (and use kerneltime) or not. */ ++ ++ time_t date_start; ++ time_t date_stop; ++}; ++ ++ ++#endif /* __ipt_time_h_included__ */ +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/ipt_time.c linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_time.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/ipt_time.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_time.c 2007-05-26 20:31:03.596402160 +0200 +@@ -0,0 +1,180 @@ ++/* ++ This is a module which is used for time matching ++ It is using some modified code from dietlibc (localtime() function) ++ that you can find at http://www.fefe.de/dietlibc/ ++ This file is distributed under the terms of the GNU General Public ++ License (GPL). Copies of the GPL can be obtained from: ftp://prep.ai.mit.edu/pub/gnu/GPL ++ 2001-05-04 Fabrice MARIE <fabrice@netfilter.org> : initial development. ++ 2001-21-05 Fabrice MARIE <fabrice@netfilter.org> : bug fix in the match code, ++ thanks to "Zeng Yu" <zengy@capitel.com.cn> for bug report. ++ 2001-26-09 Fabrice MARIE <fabrice@netfilter.org> : force the match to be in LOCAL_IN or PRE_ROUTING only. ++ 2001-30-11 Fabrice : added the possibility to use the match in FORWARD/OUTPUT with a little hack, ++ added Nguyen Dang Phuoc Dong <dongnd@tlnet.com.vn> patch to support timezones. ++ 2004-05-02 Fabrice : added support for date matching, from an idea of Fabien COELHO. ++*/ ++ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ipt_time.h> ++#include <linux/time.h> ++ ++MODULE_AUTHOR("Fabrice MARIE <fabrice@netfilter.org>"); ++MODULE_DESCRIPTION("Match arrival timestamp/date"); ++MODULE_LICENSE("GPL"); ++ ++struct tm ++{ ++ int tm_sec; /* Seconds. [0-60] (1 leap second) */ ++ int tm_min; /* Minutes. [0-59] */ ++ int tm_hour; /* Hours. [0-23] */ ++ int tm_mday; /* Day. [1-31] */ ++ int tm_mon; /* Month. [0-11] */ ++ int tm_year; /* Year - 1900. */ ++ int tm_wday; /* Day of week. [0-6] */ ++ int tm_yday; /* Days in year.[0-365] */ ++ int tm_isdst; /* DST. [-1/0/1]*/ ++ ++ long int tm_gmtoff; /* we don't care, we count from GMT */ ++ const char *tm_zone; /* we don't care, we count from GMT */ ++}; ++ ++void ++localtime(const u32 time, struct tm *r); ++ ++static int ++match(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++ const struct xt_match *match, ++ const void *matchinfo, ++ int offset, ++ unsigned int protoff, ++ int *hotdrop) ++{ ++ const struct ipt_time_info *info = matchinfo; /* match info for rule */ ++ struct timeval tv; ++ struct tm currenttime; /* time human readable */ ++ u_int8_t days_of_week[7] = {64, 32, 16, 8, 4, 2, 1}; ++ u_int16_t packet_time; ++ ++ /* We might not have a timestamp, get one */ ++ if (skb->tstamp.tv64 == 0) ++ __net_timestamp((struct sk_buff *)skb); ++ ++ skb_get_timestamp(skb, &tv); ++ /* First we make sure we are in the date start-stop boundaries */ ++ if ((tv.tv_sec < info->date_start) || (tv.tv_sec > info->date_stop)) ++ return 0; /* We are outside the date boundaries */ ++ ++ /* Transform the timestamp of the packet, in a human readable form */ ++ localtime(tv.tv_sec, ¤ttime); ++ ++ /* check if we match this timestamp, we start by the days... */ ++ if ((days_of_week[currenttime.tm_wday] & info->days_match) != days_of_week[currenttime.tm_wday]) ++ return 0; /* the day doesn't match */ ++ ++ /* ... check the time now */ ++ packet_time = (currenttime.tm_hour * 60) + currenttime.tm_min; ++ if ((packet_time < info->time_start) || (packet_time > info->time_stop)) ++ return 0; ++ ++ /* here we match ! */ ++ return 1; ++} ++ ++static int ++checkentry(const char *tablename, ++ const void *ip, ++ const struct xt_match *match, ++ void *matchinfo, ++ unsigned int hook_mask) ++{ ++ struct ipt_time_info *info = matchinfo; /* match info for rule */ ++ ++ /* First, check that we are in the correct hooks */ ++ if (hook_mask ++ & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) | (1 << NF_IP_LOCAL_OUT))) ++ { ++ printk("ipt_time: error, only valid for PRE_ROUTING, LOCAL_IN, FORWARD and OUTPUT)\n"); ++ return 0; ++ } ++ ++ /* Now check the coherence of the data ... */ ++ if ((info->time_start > 1439) || /* 23*60+59 = 1439*/ ++ (info->time_stop > 1439)) ++ { ++ printk(KERN_WARNING "ipt_time: invalid argument\n"); ++ return 0; ++ } ++ ++ return 1; ++} ++ ++static struct ipt_match time_match = { ++ .name = "time", ++ .match = &match, ++ .matchsize = sizeof(struct ipt_time_info), ++ .checkentry = &checkentry, ++ .me = THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ printk("ipt_time loading\n"); ++ return xt_register_match(&time_match); ++} ++ ++static void __exit fini(void) ++{ ++ xt_unregister_match(&time_match); ++ printk("ipt_time unloaded\n"); ++} ++ ++module_init(init); ++module_exit(fini); ++ ++ ++/* The part below is borowed and modified from dietlibc */ ++ ++/* seconds per day */ ++#define SPD 24*60*60 ++ ++void ++localtime(const u32 time, struct tm *r) { ++ u32 i, timep; ++ extern struct timezone sys_tz; ++ const unsigned int __spm[12] = ++ { 0, ++ (31), ++ (31+28), ++ (31+28+31), ++ (31+28+31+30), ++ (31+28+31+30+31), ++ (31+28+31+30+31+30), ++ (31+28+31+30+31+30+31), ++ (31+28+31+30+31+30+31+31), ++ (31+28+31+30+31+30+31+31+30), ++ (31+28+31+30+31+30+31+31+30+31), ++ (31+28+31+30+31+30+31+31+30+31+30), ++ }; ++ register u32 work; ++ ++ timep = time - (sys_tz.tz_minuteswest * 60); ++ work=timep%(SPD); ++ r->tm_sec=work%60; work/=60; ++ r->tm_min=work%60; r->tm_hour=work/60; ++ work=timep/(SPD); ++ r->tm_wday=(4+work)%7; ++ for (i=1970; ; ++i) { ++ register time_t k= (!(i%4) && ((i%100) || !(i%400)))?366:365; ++ if (work>k) ++ work-=k; ++ else ++ break; ++ } ++ r->tm_year=i-1900; ++ for (i=11; i && __spm[i]>work; --i) ; ++ r->tm_mon=i; ++ r->tm_mday=work-__spm[i]+1; ++} +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig 2007-05-26 20:31:03.452424048 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig 2007-05-26 20:31:03.597402008 +0200 +@@ -96,6 +96,22 @@ + + To compile it as a module, choose M here. If unsure, say N. + ++ ++config IP_NF_MATCH_TIME ++ tristate 'TIME match support' ++ depends on IP_NF_IPTABLES ++ help ++ This option adds a `time' match, which allows you ++ to match based on the packet arrival time/date ++ (arrival time/date at the machine which netfilter is running on) or ++ departure time/date (for locally generated packets). ++ ++ If you say Y here, try iptables -m time --help for more information. ++ If you want to compile it as a module, say M here and read ++ ++ Documentation/modules.txt. If unsure, say `N'. ++ ++ + config IP_NF_MATCH_RECENT + tristate "recent match support" + depends on IP_NF_IPTABLES +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Makefile linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv4/netfilter/Makefile 2007-05-26 20:31:03.452424048 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile 2007-05-26 20:31:03.597402008 +0200 +@@ -44,6 +44,7 @@ + obj-$(CONFIG_IP_NF_MATCH_IPRANGE) += ipt_iprange.o + obj-$(CONFIG_IP_NF_MATCH_OWNER) += ipt_owner.o + obj-$(CONFIG_IP_NF_MATCH_TOS) += ipt_tos.o ++obj-$(CONFIG_IP_NF_MATCH_TIME) += ipt_time.o + obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o + obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o + obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o diff --git a/target/linux/generic-2.6/patches-2.6.22/150-netfilter_imq.patch b/target/linux/generic-2.6/patches-2.6.22/150-netfilter_imq.patch new file mode 100644 index 0000000000..36a4cadd7e --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/150-netfilter_imq.patch @@ -0,0 +1,867 @@ +diff -urN linux-2.6.21.1.old/drivers/net/imq.c linux-2.6.21.1.dev/drivers/net/imq.c +--- linux-2.6.21.1.old/drivers/net/imq.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/drivers/net/imq.c 2007-05-26 20:34:15.180276984 +0200 +@@ -0,0 +1,402 @@ ++/* ++ * Pseudo-driver for the intermediate queue device. ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ * ++ * Authors: Patrick McHardy, <kaber@trash.net> ++ * ++ * The first version was written by Martin Devera, <devik@cdi.cz> ++ * ++ * Credits: Jan Rafaj <imq2t@cedric.vabo.cz> ++ * - Update patch to 2.4.21 ++ * Sebastian Strollo <sstrollo@nortelnetworks.com> ++ * - Fix "Dead-loop on netdevice imq"-issue ++ * Marcel Sebek <sebek64@post.cz> ++ * - Update to 2.6.2-rc1 ++ * ++ * After some time of inactivity there is a group taking care ++ * of IMQ again: http://www.linuximq.net ++ * ++ * ++ * 2004/06/30 - New version of IMQ patch to kernels <=2.6.7 including ++ * the following changes: ++ * ++ * - Correction of ipv6 support "+"s issue (Hasso Tepper) ++ * - Correction of imq_init_devs() issue that resulted in ++ * kernel OOPS unloading IMQ as module (Norbert Buchmuller) ++ * - Addition of functionality to choose number of IMQ devices ++ * during kernel config (Andre Correa) ++ * - Addition of functionality to choose how IMQ hooks on ++ * PRE and POSTROUTING (after or before NAT) (Andre Correa) ++ * - Cosmetic corrections (Norbert Buchmuller) (Andre Correa) ++ * ++ * ++ * 2005/12/16 - IMQ versions between 2.6.7 and 2.6.13 were ++ * released with almost no problems. 2.6.14-x was released ++ * with some important changes: nfcache was removed; After ++ * some weeks of trouble we figured out that some IMQ fields ++ * in skb were missing in skbuff.c - skb_clone and copy_skb_header. ++ * These functions are correctly patched by this new patch version. ++ * ++ * Thanks for all who helped to figure out all the problems with ++ * 2.6.14.x: Patrick McHardy, Rune Kock, VeNoMouS, Max CtRiX, ++ * Kevin Shanahan, Richard Lucassen, Valery Dachev (hopefully ++ * I didn't forget anybody). I apologize again for my lack of time. ++ * ++ * More info at: http://www.linuximq.net/ (Andre Correa) ++ */ ++ ++#include <linux/module.h> ++#include <linux/kernel.h> ++#include <linux/moduleparam.h> ++#include <linux/skbuff.h> ++#include <linux/netdevice.h> ++#include <linux/rtnetlink.h> ++#include <linux/if_arp.h> ++#include <linux/netfilter.h> ++#include <linux/netfilter_ipv4.h> ++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) ++ #include <linux/netfilter_ipv6.h> ++#endif ++#include <linux/imq.h> ++#include <net/pkt_sched.h> ++ ++extern int qdisc_restart1(struct net_device *dev); ++ ++static nf_hookfn imq_nf_hook; ++ ++static struct nf_hook_ops imq_ingress_ipv4 = { ++ .hook = imq_nf_hook, ++ .owner = THIS_MODULE, ++ .pf = PF_INET, ++ .hooknum = NF_IP_PRE_ROUTING, ++#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB) ++ .priority = NF_IP_PRI_MANGLE + 1 ++#else ++ .priority = NF_IP_PRI_NAT_DST + 1 ++#endif ++}; ++ ++static struct nf_hook_ops imq_egress_ipv4 = { ++ .hook = imq_nf_hook, ++ .owner = THIS_MODULE, ++ .pf = PF_INET, ++ .hooknum = NF_IP_POST_ROUTING, ++#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA) ++ .priority = NF_IP_PRI_LAST ++#else ++ .priority = NF_IP_PRI_NAT_SRC - 1 ++#endif ++}; ++ ++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) ++static struct nf_hook_ops imq_ingress_ipv6 = { ++ .hook = imq_nf_hook, ++ .owner = THIS_MODULE, ++ .pf = PF_INET6, ++ .hooknum = NF_IP6_PRE_ROUTING, ++#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB) ++ .priority = NF_IP6_PRI_MANGLE + 1 ++#else ++ .priority = NF_IP6_PRI_NAT_DST + 1 ++#endif ++}; ++ ++static struct nf_hook_ops imq_egress_ipv6 = { ++ .hook = imq_nf_hook, ++ .owner = THIS_MODULE, ++ .pf = PF_INET6, ++ .hooknum = NF_IP6_POST_ROUTING, ++#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA) ++ .priority = NF_IP6_PRI_LAST ++#else ++ .priority = NF_IP6_PRI_NAT_SRC - 1 ++#endif ++}; ++#endif ++ ++#if defined(CONFIG_IMQ_NUM_DEVS) ++static unsigned int numdevs = CONFIG_IMQ_NUM_DEVS; ++#else ++static unsigned int numdevs = 2; ++#endif ++ ++static struct net_device *imq_devs; ++ ++static struct net_device_stats *imq_get_stats(struct net_device *dev) ++{ ++ return (struct net_device_stats *)dev->priv; ++} ++ ++/* called for packets kfree'd in qdiscs at places other than enqueue */ ++static void imq_skb_destructor(struct sk_buff *skb) ++{ ++ struct nf_info *info = skb->nf_info; ++ ++ if (info) { ++ if (info->indev) ++ dev_put(info->indev); ++ if (info->outdev) ++ dev_put(info->outdev); ++ kfree(info); ++ } ++} ++ ++static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev) ++{ ++ struct net_device_stats *stats = (struct net_device_stats*) dev->priv; ++ ++ stats->tx_bytes += skb->len; ++ stats->tx_packets++; ++ ++ skb->imq_flags = 0; ++ skb->destructor = NULL; ++ ++ dev->trans_start = jiffies; ++ nf_reinject(skb, skb->nf_info, NF_ACCEPT); ++ return 0; ++} ++ ++static int imq_nf_queue(struct sk_buff *skb, struct nf_info *info, unsigned queue_num, void *data) ++{ ++ struct net_device *dev; ++ struct net_device_stats *stats; ++ struct sk_buff *skb2 = NULL; ++ struct Qdisc *q; ++ unsigned int index = skb->imq_flags&IMQ_F_IFMASK; ++ int ret = -1; ++ ++ if (index > numdevs) ++ return -1; ++ ++ dev = imq_devs + index; ++ if (!(dev->flags & IFF_UP)) { ++ skb->imq_flags = 0; ++ nf_reinject(skb, info, NF_ACCEPT); ++ return 0; ++ } ++ dev->last_rx = jiffies; ++ ++ if (skb->destructor) { ++ skb2 = skb; ++ skb = skb_clone(skb, GFP_ATOMIC); ++ if (!skb) ++ return -1; ++ } ++ skb->nf_info = info; ++ ++ stats = (struct net_device_stats *)dev->priv; ++ stats->rx_bytes+= skb->len; ++ stats->rx_packets++; ++ ++ spin_lock_bh(&dev->queue_lock); ++ q = dev->qdisc; ++ if (q->enqueue) { ++ q->enqueue(skb_get(skb), q); ++ if (skb_shared(skb)) { ++ skb->destructor = imq_skb_destructor; ++ kfree_skb(skb); ++ ret = 0; ++ } ++ } ++ if (spin_is_locked(&dev->_xmit_lock)) ++ netif_schedule(dev); ++ else ++ while (!netif_queue_stopped(dev) && qdisc_restart1(dev) < 0) ++ /* NOTHING */; ++ ++ spin_unlock_bh(&dev->queue_lock); ++ ++ if (skb2) ++ kfree_skb(ret ? skb : skb2); ++ ++ return ret; ++} ++ ++static struct nf_queue_handler nfqh = { ++ .name = "imq", ++ .outfn = imq_nf_queue, ++}; ++ ++static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff **pskb, ++ const struct net_device *indev, ++ const struct net_device *outdev, ++ int (*okfn)(struct sk_buff *)) ++{ ++ if ((*pskb)->imq_flags & IMQ_F_ENQUEUE) ++ return NF_QUEUE; ++ ++ return NF_ACCEPT; ++} ++ ++ ++static int __init imq_init_hooks(void) ++{ ++ int err; ++ ++ err = nf_register_queue_handler(PF_INET, &nfqh); ++ if (err > 0) ++ goto err1; ++ if ((err = nf_register_hook(&imq_ingress_ipv4))) ++ goto err2; ++ if ((err = nf_register_hook(&imq_egress_ipv4))) ++ goto err3; ++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) ++ if ((err = nf_register_queue_handler(PF_INET6, &nfqh))) ++ goto err4; ++ if ((err = nf_register_hook(&imq_ingress_ipv6))) ++ goto err5; ++ if ((err = nf_register_hook(&imq_egress_ipv6))) ++ goto err6; ++#endif ++ ++ return 0; ++ ++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) ++err6: ++ nf_unregister_hook(&imq_ingress_ipv6); ++err5: ++ nf_unregister_queue_handler(PF_INET6); ++err4: ++ nf_unregister_hook(&imq_egress_ipv6); ++#endif ++err3: ++ nf_unregister_hook(&imq_ingress_ipv4); ++err2: ++ nf_unregister_queue_handler(PF_INET); ++err1: ++ return err; ++} ++ ++static void __exit imq_unhook(void) ++{ ++ nf_unregister_hook(&imq_ingress_ipv4); ++ nf_unregister_hook(&imq_egress_ipv4); ++ nf_unregister_queue_handler(PF_INET); ++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) ++ nf_unregister_hook(&imq_ingress_ipv6); ++ nf_unregister_hook(&imq_egress_ipv6); ++ nf_unregister_queue_handler(PF_INET6); ++#endif ++} ++ ++static int __init imq_dev_init(struct net_device *dev) ++{ ++ dev->hard_start_xmit = imq_dev_xmit; ++ dev->type = ARPHRD_VOID; ++ dev->mtu = 1500; ++ dev->tx_queue_len = 30; ++ dev->flags = IFF_NOARP; ++ dev->priv = kmalloc(sizeof(struct net_device_stats), GFP_KERNEL); ++ if (dev->priv == NULL) ++ return -ENOMEM; ++ memset(dev->priv, 0, sizeof(struct net_device_stats)); ++ dev->get_stats = imq_get_stats; ++ ++ return 0; ++} ++ ++static void imq_dev_uninit(struct net_device *dev) ++{ ++ kfree(dev->priv); ++} ++ ++static int __init imq_init_devs(void) ++{ ++ struct net_device *dev; ++ int i,j; ++ j = numdevs; ++ ++ if (!numdevs || numdevs > IMQ_MAX_DEVS) { ++ printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n", ++ IMQ_MAX_DEVS); ++ return -EINVAL; ++ } ++ ++ imq_devs = kmalloc(sizeof(struct net_device) * numdevs, GFP_KERNEL); ++ if (!imq_devs) ++ return -ENOMEM; ++ memset(imq_devs, 0, sizeof(struct net_device) * numdevs); ++ ++ /* we start counting at zero */ ++ numdevs--; ++ ++ for (i = 0, dev = imq_devs; i <= numdevs; i++, dev++) { ++ SET_MODULE_OWNER(dev); ++ strcpy(dev->name, "imq%d"); ++ dev->init = imq_dev_init; ++ dev->uninit = imq_dev_uninit; ++ ++ if (register_netdev(dev) < 0) ++ goto err_register; ++ } ++ printk(KERN_INFO "IMQ starting with %u devices...\n", j); ++ return 0; ++ ++err_register: ++ for (; i; i--) ++ unregister_netdev(--dev); ++ kfree(imq_devs); ++ return -EIO; ++} ++ ++static void imq_cleanup_devs(void) ++{ ++ int i; ++ struct net_device *dev = imq_devs; ++ ++ for (i = 0; i <= numdevs; i++) ++ unregister_netdev(dev++); ++ ++ kfree(imq_devs); ++} ++ ++static int __init imq_init_module(void) ++{ ++ int err; ++ ++ if ((err = imq_init_devs())) { ++ printk(KERN_ERR "IMQ: Error trying imq_init_devs()\n"); ++ return err; ++ } ++ if ((err = imq_init_hooks())) { ++ printk(KERN_ERR "IMQ: Error trying imq_init_hooks()\n"); ++ imq_cleanup_devs(); ++ return err; ++ } ++ ++ printk(KERN_INFO "IMQ driver loaded successfully.\n"); ++ ++#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB) ++ printk(KERN_INFO "\tHooking IMQ before NAT on PREROUTING.\n"); ++#else ++ printk(KERN_INFO "\tHooking IMQ after NAT on PREROUTING.\n"); ++#endif ++#if defined(CONFIG_IMQ_BEHAVIOR_AB) || defined(CONFIG_IMQ_BEHAVIOR_BB) ++ printk(KERN_INFO "\tHooking IMQ before NAT on POSTROUTING.\n"); ++#else ++ printk(KERN_INFO "\tHooking IMQ after NAT on POSTROUTING.\n"); ++#endif ++ ++ return 0; ++} ++ ++static void __exit imq_cleanup_module(void) ++{ ++ imq_unhook(); ++ imq_cleanup_devs(); ++ printk(KERN_INFO "IMQ driver unloaded successfully.\n"); ++} ++ ++ ++module_init(imq_init_module); ++module_exit(imq_cleanup_module); ++ ++module_param(numdevs, int, 0); ++MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will be created)"); ++MODULE_AUTHOR("http://www.linuximq.net"); ++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information."); ++MODULE_LICENSE("GPL"); +diff -urN linux-2.6.21.1.old/drivers/net/Kconfig linux-2.6.21.1.dev/drivers/net/Kconfig +--- linux-2.6.21.1.old/drivers/net/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/net/Kconfig 2007-05-26 20:34:15.193275008 +0200 +@@ -96,6 +96,129 @@ + To compile this driver as a module, choose M here: the module + will be called eql. If unsure, say N. + ++config IMQ ++ tristate "IMQ (intermediate queueing device) support" ++ depends on NETDEVICES && NETFILTER ++ ---help--- ++ The IMQ device(s) is used as placeholder for QoS queueing ++ disciplines. Every packet entering/leaving the IP stack can be ++ directed through the IMQ device where it's enqueued/dequeued to the ++ attached qdisc. This allows you to treat network devices as classes ++ and distribute bandwidth among them. Iptables is used to specify ++ through which IMQ device, if any, packets travel. ++ ++ More information at: http://www.linuximq.net/ ++ ++ To compile this driver as a module, choose M here: the module ++ will be called imq. If unsure, say N. ++ ++choice ++ prompt "IMQ behavior (PRE/POSTROUTING)" ++ depends on IMQ ++ default IMQ_BEHAVIOR_BA ++ help ++ ++ This settings defines how IMQ behaves in respect to its ++ hooking in PREROUTING and POSTROUTING. ++ ++ IMQ can work in any of the following ways: ++ ++ PREROUTING | POSTROUTING ++ -----------------|------------------- ++ #1 After NAT | After NAT ++ #2 After NAT | Before NAT ++ #3 Before NAT | After NAT ++ #4 Before NAT | Before NAT ++ ++ The default behavior is to hook before NAT on PREROUTING ++ and after NAT on POSTROUTING (#3). ++ ++ This settings are specially usefull when trying to use IMQ ++ to shape NATed clients. ++ ++ More information can be found at: www.linuximq.net ++ ++ If not sure leave the default settings alone. ++ ++config IMQ_BEHAVIOR_AA ++ bool "IMQ AA" ++ help ++ This settings defines how IMQ behaves in respect to its ++ hooking in PREROUTING and POSTROUTING. ++ ++ Choosing this option will make IMQ hook like this: ++ ++ PREROUTING: After NAT ++ POSTROUTING: After NAT ++ ++ More information can be found at: www.linuximq.net ++ ++ If not sure leave the default settings alone. ++ ++config IMQ_BEHAVIOR_AB ++ bool "IMQ AB" ++ help ++ This settings defines how IMQ behaves in respect to its ++ hooking in PREROUTING and POSTROUTING. ++ ++ Choosing this option will make IMQ hook like this: ++ ++ PREROUTING: After NAT ++ POSTROUTING: Before NAT ++ ++ More information can be found at: www.linuximq.net ++ ++ If not sure leave the default settings alone. ++ ++config IMQ_BEHAVIOR_BA ++ bool "IMQ BA" ++ help ++ This settings defines how IMQ behaves in respect to its ++ hooking in PREROUTING and POSTROUTING. ++ ++ Choosing this option will make IMQ hook like this: ++ ++ PREROUTING: Before NAT ++ POSTROUTING: After NAT ++ ++ More information can be found at: www.linuximq.net ++ ++ If not sure leave the default settings alone. ++ ++config IMQ_BEHAVIOR_BB ++ bool "IMQ BB" ++ help ++ This settings defines how IMQ behaves in respect to its ++ hooking in PREROUTING and POSTROUTING. ++ ++ Choosing this option will make IMQ hook like this: ++ ++ PREROUTING: Before NAT ++ POSTROUTING: Before NAT ++ ++ More information can be found at: www.linuximq.net ++ ++ If not sure leave the default settings alone. ++ ++endchoice ++ ++config IMQ_NUM_DEVS ++ ++ int "Number of IMQ devices" ++ range 2 8 ++ depends on IMQ ++ default "2" ++ help ++ ++ This settings defines how many IMQ devices will be ++ created. ++ ++ The default value is 2. ++ ++ More information can be found at: www.linuximq.net ++ ++ If not sure leave the default settings alone. ++ + config TUN + tristate "Universal TUN/TAP device driver support" + select CRC32 +diff -urN linux-2.6.21.1.old/drivers/net/Makefile linux-2.6.21.1.dev/drivers/net/Makefile +--- linux-2.6.21.1.old/drivers/net/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/net/Makefile 2007-05-26 20:34:15.194274856 +0200 +@@ -124,6 +124,7 @@ + obj-$(CONFIG_SLHC) += slhc.o + + obj-$(CONFIG_DUMMY) += dummy.o ++obj-$(CONFIG_IMQ) += imq.o + obj-$(CONFIG_IFB) += ifb.o + obj-$(CONFIG_DE600) += de600.o + obj-$(CONFIG_DE620) += de620.o +diff -urN linux-2.6.21.1.old/include/linux/imq.h linux-2.6.21.1.dev/include/linux/imq.h +--- linux-2.6.21.1.old/include/linux/imq.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/imq.h 2007-05-26 20:34:15.458234728 +0200 +@@ -0,0 +1,9 @@ ++#ifndef _IMQ_H ++#define _IMQ_H ++ ++#define IMQ_MAX_DEVS 16 ++ ++#define IMQ_F_IFMASK 0x7f ++#define IMQ_F_ENQUEUE 0x80 ++ ++#endif /* _IMQ_H */ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_IMQ.h linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_IMQ.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_IMQ.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_IMQ.h 2007-05-26 20:34:15.458234728 +0200 +@@ -0,0 +1,8 @@ ++#ifndef _IPT_IMQ_H ++#define _IPT_IMQ_H ++ ++struct ipt_imq_info { ++ unsigned int todev; /* target imq device */ ++}; ++ ++#endif /* _IPT_IMQ_H */ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv6/ip6t_IMQ.h linux-2.6.21.1.dev/include/linux/netfilter_ipv6/ip6t_IMQ.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv6/ip6t_IMQ.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv6/ip6t_IMQ.h 2007-05-26 20:34:15.495229104 +0200 +@@ -0,0 +1,8 @@ ++#ifndef _IP6T_IMQ_H ++#define _IP6T_IMQ_H ++ ++struct ip6t_imq_info { ++ unsigned int todev; /* target imq device */ ++}; ++ ++#endif /* _IP6T_IMQ_H */ +diff -urN linux-2.6.21.1.old/include/linux/skbuff.h linux-2.6.21.1.dev/include/linux/skbuff.h +--- linux-2.6.21.1.old/include/linux/skbuff.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/linux/skbuff.h 2007-05-26 20:34:15.496228952 +0200 +@@ -285,6 +285,10 @@ + struct nf_conntrack *nfct; + struct sk_buff *nfct_reasm; + #endif ++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE) ++ unsigned char imq_flags; ++ struct nf_info *nf_info; ++#endif + #ifdef CONFIG_BRIDGE_NETFILTER + struct nf_bridge_info *nf_bridge; + #endif +diff -urN linux-2.6.21.1.old/net/core/dev.c linux-2.6.21.1.dev/net/core/dev.c +--- linux-2.6.21.1.old/net/core/dev.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/core/dev.c 2007-05-26 20:34:15.497228800 +0200 +@@ -94,6 +94,9 @@ + #include <linux/skbuff.h> + #include <net/sock.h> + #include <linux/rtnetlink.h> ++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE) ++#include <linux/imq.h> ++#endif + #include <linux/proc_fs.h> + #include <linux/seq_file.h> + #include <linux/stat.h> +@@ -1403,7 +1406,11 @@ + int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) + { + if (likely(!skb->next)) { +- if (!list_empty(&ptype_all)) ++ if (!list_empty(&ptype_all) ++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE) ++ && !(skb->imq_flags & IMQ_F_ENQUEUE) ++#endif ++ ) + dev_queue_xmit_nit(skb, dev); + + if (netif_needs_gso(dev, skb)) { +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/ipt_IMQ.c linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_IMQ.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/ipt_IMQ.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_IMQ.c 2007-05-26 20:34:15.498228648 +0200 +@@ -0,0 +1,71 @@ ++/* ++ * This target marks packets to be enqueued to an imq device ++ */ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <linux/netfilter_ipv4/ipt_IMQ.h> ++#include <linux/imq.h> ++ ++static unsigned int imq_target(struct sk_buff **pskb, ++ const struct net_device *in, ++ const struct net_device *out, ++ unsigned int hooknum, ++ const struct xt_target *target, ++ const void *targinfo) ++{ ++ struct ipt_imq_info *mr = (struct ipt_imq_info*)targinfo; ++ ++ (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE; ++ ++ return IPT_CONTINUE; ++} ++ ++static int imq_checkentry(const char *tablename, ++ const void *e, ++ const struct xt_target *target, ++ void *targinfo, ++ unsigned int hook_mask) ++{ ++ struct ipt_imq_info *mr; ++ ++ mr = (struct ipt_imq_info*)targinfo; ++ ++ if (mr->todev > IMQ_MAX_DEVS) { ++ printk(KERN_WARNING ++ "IMQ: invalid device specified, highest is %u\n", ++ IMQ_MAX_DEVS); ++ return 0; ++ } ++ ++ return 1; ++} ++ ++static struct ipt_target ipt_imq_reg = { ++ .name = "IMQ", ++ .target = imq_target, ++ .targetsize = sizeof(struct ipt_imq_info), ++ .checkentry = imq_checkentry, ++ .me = THIS_MODULE, ++ .table = "mangle" ++}; ++ ++static int __init init(void) ++{ ++ if (xt_register_target(&ipt_imq_reg)) ++ return -EINVAL; ++ ++ return 0; ++} ++ ++static void __exit fini(void) ++{ ++ xt_unregister_target(&ipt_imq_reg); ++} ++ ++module_init(init); ++module_exit(fini); ++ ++MODULE_AUTHOR("http://www.linuximq.net"); ++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information."); ++MODULE_LICENSE("GPL"); +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig 2007-05-26 20:34:13.929467136 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig 2007-05-26 20:34:15.498228648 +0200 +@@ -351,6 +351,17 @@ + + To compile it as a module, choose M here. If unsure, say N. + ++config IP_NF_TARGET_IMQ ++ tristate "IMQ target support" ++ depends on IP_NF_MANGLE ++ help ++ This option adds a `IMQ' target which is used to specify if and ++ to which IMQ device packets should get enqueued/dequeued. ++ ++ For more information visit: http://www.linuximq.net/ ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ + config IP_NF_TARGET_TOS + tristate "TOS target support" + depends on IP_NF_MANGLE +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Makefile linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv4/netfilter/Makefile 2007-05-26 20:34:13.930466984 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile 2007-05-26 20:34:15.499228496 +0200 +@@ -58,6 +58,7 @@ + obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o + obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o + obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o ++obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o + obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o + obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o + obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o +diff -urN linux-2.6.21.1.old/net/ipv6/netfilter/ip6t_IMQ.c linux-2.6.21.1.dev/net/ipv6/netfilter/ip6t_IMQ.c +--- linux-2.6.21.1.old/net/ipv6/netfilter/ip6t_IMQ.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv6/netfilter/ip6t_IMQ.c 2007-05-26 20:34:15.531223632 +0200 +@@ -0,0 +1,71 @@ ++/* ++ * This target marks packets to be enqueued to an imq device ++ */ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/netfilter_ipv6/ip6_tables.h> ++#include <linux/netfilter_ipv6/ip6t_IMQ.h> ++#include <linux/imq.h> ++ ++static unsigned int imq_target(struct sk_buff **pskb, ++ const struct net_device *in, ++ const struct net_device *out, ++ unsigned int hooknum, ++ const struct xt_target *target, ++ const void *targinfo) ++{ ++ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)targinfo; ++ ++ (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE; ++ ++ return IP6T_CONTINUE; ++} ++ ++static int imq_checkentry(const char *tablename, ++ const void *entry, ++ const struct xt_target *target, ++ void *targinfo, ++ unsigned int hook_mask) ++{ ++ struct ip6t_imq_info *mr; ++ ++ mr = (struct ip6t_imq_info*)targinfo; ++ ++ if (mr->todev > IMQ_MAX_DEVS) { ++ printk(KERN_WARNING ++ "IMQ: invalid device specified, highest is %u\n", ++ IMQ_MAX_DEVS); ++ return 0; ++ } ++ ++ return 1; ++} ++ ++static struct ip6t_target ip6t_imq_reg = { ++ .name = "IMQ", ++ .target = imq_target, ++ .targetsize = sizeof(struct ip6t_imq_info), ++ .table = "mangle", ++ .checkentry = imq_checkentry, ++ .me = THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ if (xt_register_target(&ip6t_imq_reg)) ++ return -EINVAL; ++ ++ return 0; ++} ++ ++static void __exit fini(void) ++{ ++ xt_unregister_target(&ip6t_imq_reg); ++} ++ ++module_init(init); ++module_exit(fini); ++ ++MODULE_AUTHOR("http://www.linuximq.net"); ++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information."); ++MODULE_LICENSE("GPL"); +diff -urN linux-2.6.21.1.old/net/ipv6/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv6/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv6/netfilter/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv6/netfilter/Kconfig 2007-05-26 20:34:15.531223632 +0200 +@@ -173,6 +173,15 @@ + + To compile it as a module, choose M here. If unsure, say N. + ++config IP6_NF_TARGET_IMQ ++ tristate "IMQ target support" ++ depends on IP6_NF_MANGLE ++ help ++ This option adds a `IMQ' target which is used to specify if and ++ to which imq device packets should get enqueued/dequeued. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ + config IP6_NF_TARGET_HL + tristate 'HL (hoplimit) target support' + depends on IP6_NF_MANGLE +diff -urN linux-2.6.21.1.old/net/ipv6/netfilter/Makefile linux-2.6.21.1.dev/net/ipv6/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv6/netfilter/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv6/netfilter/Makefile 2007-05-26 20:34:15.558219528 +0200 +@@ -13,6 +13,7 @@ + obj-$(CONFIG_IP6_NF_MATCH_OWNER) += ip6t_owner.o + obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o + obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o ++obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o + obj-$(CONFIG_IP6_NF_TARGET_HL) += ip6t_HL.o + obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o + obj-$(CONFIG_IP6_NF_TARGET_LOG) += ip6t_LOG.o +diff -urN linux-2.6.21.1.old/net/sched/sch_generic.c linux-2.6.21.1.dev/net/sched/sch_generic.c +--- linux-2.6.21.1.old/net/sched/sch_generic.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/sched/sch_generic.c 2007-05-26 20:34:15.599213296 +0200 +@@ -77,7 +77,6 @@ + + NOTE: Called under dev->queue_lock with locally disabled BH. + */ +- + static inline int qdisc_restart(struct net_device *dev) + { + struct Qdisc *q = dev->qdisc; +@@ -177,6 +176,11 @@ + return q->q.qlen; + } + ++int qdisc_restart1(struct net_device *dev) ++{ ++ return qdisc_restart(dev); ++} ++ + void __qdisc_run(struct net_device *dev) + { + do { +@@ -607,3 +611,4 @@ + EXPORT_SYMBOL(qdisc_reset); + EXPORT_SYMBOL(qdisc_lock_tree); + EXPORT_SYMBOL(qdisc_unlock_tree); ++EXPORT_SYMBOL(qdisc_restart1); diff --git a/target/linux/generic-2.6/patches-2.6.22/160-netfilter_route.patch b/target/linux/generic-2.6/patches-2.6.22/160-netfilter_route.patch new file mode 100644 index 0000000000..0e9984bbbb --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/160-netfilter_route.patch @@ -0,0 +1,957 @@ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_ROUTE.h linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_ROUTE.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv4/ipt_ROUTE.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv4/ipt_ROUTE.h 2007-05-26 20:37:08.971856648 +0200 +@@ -0,0 +1,23 @@ ++/* Header file for iptables ipt_ROUTE target ++ * ++ * (C) 2002 by Cédric de Launois <delaunois@info.ucl.ac.be> ++ * ++ * This software is distributed under GNU GPL v2, 1991 ++ */ ++#ifndef _IPT_ROUTE_H_target ++#define _IPT_ROUTE_H_target ++ ++#define IPT_ROUTE_IFNAMSIZ 16 ++ ++struct ipt_route_target_info { ++ char oif[IPT_ROUTE_IFNAMSIZ]; /* Output Interface Name */ ++ char iif[IPT_ROUTE_IFNAMSIZ]; /* Input Interface Name */ ++ u_int32_t gw; /* IP address of gateway */ ++ u_int8_t flags; ++}; ++ ++/* Values for "flags" field */ ++#define IPT_ROUTE_CONTINUE 0x01 ++#define IPT_ROUTE_TEE 0x02 ++ ++#endif /*_IPT_ROUTE_H_target*/ +diff -urN linux-2.6.21.1.old/include/linux/netfilter_ipv6/ip6t_ROUTE.h linux-2.6.21.1.dev/include/linux/netfilter_ipv6/ip6t_ROUTE.h +--- linux-2.6.21.1.old/include/linux/netfilter_ipv6/ip6t_ROUTE.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter_ipv6/ip6t_ROUTE.h 2007-05-26 20:37:09.001852088 +0200 +@@ -0,0 +1,23 @@ ++/* Header file for iptables ip6t_ROUTE target ++ * ++ * (C) 2003 by Cédric de Launois <delaunois@info.ucl.ac.be> ++ * ++ * This software is distributed under GNU GPL v2, 1991 ++ */ ++#ifndef _IPT_ROUTE_H_target ++#define _IPT_ROUTE_H_target ++ ++#define IP6T_ROUTE_IFNAMSIZ 16 ++ ++struct ip6t_route_target_info { ++ char oif[IP6T_ROUTE_IFNAMSIZ]; /* Output Interface Name */ ++ char iif[IP6T_ROUTE_IFNAMSIZ]; /* Input Interface Name */ ++ u_int32_t gw[4]; /* IPv6 address of gateway */ ++ u_int8_t flags; ++}; ++ ++/* Values for "flags" field */ ++#define IP6T_ROUTE_CONTINUE 0x01 ++#define IP6T_ROUTE_TEE 0x02 ++ ++#endif /*_IP6T_ROUTE_H_target*/ +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/ipt_ROUTE.c linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_ROUTE.c +--- linux-2.6.21.1.old/net/ipv4/netfilter/ipt_ROUTE.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/ipt_ROUTE.c 2007-05-26 20:37:09.001852088 +0200 +@@ -0,0 +1,483 @@ ++/* ++ * This implements the ROUTE target, which enables you to setup unusual ++ * routes not supported by the standard kernel routing table. ++ * ++ * Copyright (C) 2002 Cedric de Launois <delaunois@info.ucl.ac.be> ++ * ++ * v 1.11 2004/11/23 ++ * ++ * This software is distributed under GNU GPL v2, 1991 ++ */ ++ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/ip.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#include <net/netfilter/nf_conntrack.h> ++#include <linux/netfilter_ipv4/ipt_ROUTE.h> ++#include <linux/netdevice.h> ++#include <linux/route.h> ++#include <linux/version.h> ++#include <linux/if_arp.h> ++#include <net/ip.h> ++#include <net/route.h> ++#include <net/icmp.h> ++#include <net/checksum.h> ++ ++#if 0 ++#define DEBUGP printk ++#else ++#define DEBUGP(format, args...) ++#endif ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Cedric de Launois <delaunois@info.ucl.ac.be>"); ++MODULE_DESCRIPTION("iptables ROUTE target module"); ++ ++/* Try to route the packet according to the routing keys specified in ++ * route_info. Keys are : ++ * - ifindex : ++ * 0 if no oif preferred, ++ * otherwise set to the index of the desired oif ++ * - route_info->gw : ++ * 0 if no gateway specified, ++ * otherwise set to the next host to which the pkt must be routed ++ * If success, skb->dev is the output device to which the packet must ++ * be sent and skb->dst is not NULL ++ * ++ * RETURN: -1 if an error occured ++ * 1 if the packet was succesfully routed to the ++ * destination desired ++ * 0 if the kernel routing table could not route the packet ++ * according to the keys specified ++ */ ++static int route(struct sk_buff *skb, ++ unsigned int ifindex, ++ const struct ipt_route_target_info *route_info) ++{ ++ int err; ++ struct rtable *rt; ++ struct iphdr *iph = ip_hdr(skb); ++ struct flowi fl = { ++ .oif = ifindex, ++ .nl_u = { ++ .ip4_u = { ++ .daddr = iph->daddr, ++ .saddr = 0, ++ .tos = RT_TOS(iph->tos), ++ .scope = RT_SCOPE_UNIVERSE, ++ } ++ } ++ }; ++ ++ /* The destination address may be overloaded by the target */ ++ if (route_info->gw) ++ fl.fl4_dst = route_info->gw; ++ ++ /* Trying to route the packet using the standard routing table. */ ++ if ((err = ip_route_output_key(&rt, &fl))) { ++ if (net_ratelimit()) ++ DEBUGP("ipt_ROUTE: couldn't route pkt (err: %i)",err); ++ return -1; ++ } ++ ++ /* Drop old route. */ ++ dst_release(skb->dst); ++ skb->dst = NULL; ++ ++ /* Success if no oif specified or if the oif correspond to the ++ * one desired */ ++ if (!ifindex || rt->u.dst.dev->ifindex == ifindex) { ++ skb->dst = &rt->u.dst; ++ skb->dev = skb->dst->dev; ++ skb->protocol = htons(ETH_P_IP); ++ return 1; ++ } ++ ++ /* The interface selected by the routing table is not the one ++ * specified by the user. This may happen because the dst address ++ * is one of our own addresses. ++ */ ++ if (net_ratelimit()) ++ DEBUGP("ipt_ROUTE: failed to route as desired gw=%u.%u.%u.%u oif=%i (got oif=%i)\n", ++ NIPQUAD(route_info->gw), ifindex, rt->u.dst.dev->ifindex); ++ ++ return 0; ++} ++ ++ ++/* Stolen from ip_finish_output2 ++ * PRE : skb->dev is set to the device we are leaving by ++ * skb->dst is not NULL ++ * POST: the packet is sent with the link layer header pushed ++ * the packet is destroyed ++ */ ++static void ip_direct_send(struct sk_buff *skb) ++{ ++ struct dst_entry *dst = skb->dst; ++ struct hh_cache *hh = dst->hh; ++ struct net_device *dev = dst->dev; ++ int hh_len = LL_RESERVED_SPACE(dev); ++ ++ /* Be paranoid, rather than too clever. */ ++ if (unlikely(skb_headroom(skb) < hh_len && dev->hard_header)) { ++ struct sk_buff *skb2; ++ ++ skb2 = skb_realloc_headroom(skb, LL_RESERVED_SPACE(dev)); ++ if (skb2 == NULL) { ++ kfree_skb(skb); ++ return; ++ } ++ if (skb->sk) ++ skb_set_owner_w(skb2, skb->sk); ++ kfree_skb(skb); ++ skb = skb2; ++ } ++ ++ if (hh) { ++ int hh_alen; ++ ++ read_lock_bh(&hh->hh_lock); ++ hh_alen = HH_DATA_ALIGN(hh->hh_len); ++ memcpy(skb->data - hh_alen, hh->hh_data, hh_alen); ++ read_unlock_bh(&hh->hh_lock); ++ skb_push(skb, hh->hh_len); ++ hh->hh_output(skb); ++ } else if (dst->neighbour) ++ dst->neighbour->output(skb); ++ else { ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ipt_ROUTE: no hdr & no neighbour cache!\n"); ++ kfree_skb(skb); ++ } ++} ++ ++ ++/* PRE : skb->dev is set to the device we are leaving by ++ * POST: - the packet is directly sent to the skb->dev device, without ++ * pushing the link layer header. ++ * - the packet is destroyed ++ */ ++static inline int dev_direct_send(struct sk_buff *skb) ++{ ++ return dev_queue_xmit(skb); ++} ++ ++ ++static unsigned int route_oif(const struct ipt_route_target_info *route_info, ++ struct sk_buff *skb) ++{ ++ unsigned int ifindex = 0; ++ struct net_device *dev_out = NULL; ++ ++ /* The user set the interface name to use. ++ * Getting the current interface index. ++ */ ++ if ((dev_out = dev_get_by_name(route_info->oif))) { ++ ifindex = dev_out->ifindex; ++ } else { ++ /* Unknown interface name : packet dropped */ ++ if (net_ratelimit()) ++ DEBUGP("ipt_ROUTE: oif interface %s not found\n", route_info->oif); ++ return NF_DROP; ++ } ++ ++ /* Trying the standard way of routing packets */ ++ switch (route(skb, ifindex, route_info)) { ++ case 1: ++ dev_put(dev_out); ++ if (route_info->flags & IPT_ROUTE_CONTINUE) ++ return IPT_CONTINUE; ++ ++ ip_direct_send(skb); ++ return NF_STOLEN; ++ ++ case 0: ++ /* Failed to send to oif. Trying the hard way */ ++ if (route_info->flags & IPT_ROUTE_CONTINUE) ++ return NF_DROP; ++ ++ if (net_ratelimit()) ++ DEBUGP("ipt_ROUTE: forcing the use of %i\n", ++ ifindex); ++ ++ /* We have to force the use of an interface. ++ * This interface must be a tunnel interface since ++ * otherwise we can't guess the hw address for ++ * the packet. For a tunnel interface, no hw address ++ * is needed. ++ */ ++ if ((dev_out->type != ARPHRD_TUNNEL) ++ && (dev_out->type != ARPHRD_IPGRE)) { ++ if (net_ratelimit()) ++ DEBUGP("ipt_ROUTE: can't guess the hw addr !\n"); ++ dev_put(dev_out); ++ return NF_DROP; ++ } ++ ++ /* Send the packet. This will also free skb ++ * Do not go through the POST_ROUTING hook because ++ * skb->dst is not set and because it will probably ++ * get confused by the destination IP address. ++ */ ++ skb->dev = dev_out; ++ dev_direct_send(skb); ++ dev_put(dev_out); ++ return NF_STOLEN; ++ ++ default: ++ /* Unexpected error */ ++ dev_put(dev_out); ++ return NF_DROP; ++ } ++} ++ ++ ++static unsigned int route_iif(const struct ipt_route_target_info *route_info, ++ struct sk_buff *skb) ++{ ++ struct net_device *dev_in = NULL; ++ ++ /* Getting the current interface index. */ ++ if (!(dev_in = dev_get_by_name(route_info->iif))) { ++ if (net_ratelimit()) ++ DEBUGP("ipt_ROUTE: iif interface %s not found\n", route_info->iif); ++ return NF_DROP; ++ } ++ ++ skb->dev = dev_in; ++ dst_release(skb->dst); ++ skb->dst = NULL; ++ ++ netif_rx(skb); ++ dev_put(dev_in); ++ return NF_STOLEN; ++} ++ ++ ++static unsigned int route_gw(const struct ipt_route_target_info *route_info, ++ struct sk_buff *skb) ++{ ++ if (route(skb, 0, route_info)!=1) ++ return NF_DROP; ++ ++ if (route_info->flags & IPT_ROUTE_CONTINUE) ++ return IPT_CONTINUE; ++ ++ ip_direct_send(skb); ++ return NF_STOLEN; ++} ++ ++ ++/* To detect and deter routed packet loopback when using the --tee option, ++ * we take a page out of the raw.patch book: on the copied skb, we set up ++ * a fake ->nfct entry, pointing to the local &route_tee_track. We skip ++ * routing packets when we see they already have that ->nfct. ++ */ ++ ++static struct nf_conn route_tee_track; ++ ++static unsigned int ipt_route_target(struct sk_buff **pskb, ++ const struct net_device *in, ++ const struct net_device *out, ++ unsigned int hooknum, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ const void *targinfo, ++ void *userinfo) ++#else ++ const void *targinfo) ++#endif ++{ ++ const struct ipt_route_target_info *route_info = targinfo; ++ struct sk_buff *skb = *pskb; ++ unsigned int res; ++ ++ if (skb->nfct == &route_tee_track.ct_general) { ++ /* Loopback - a packet we already routed, is to be ++ * routed another time. Avoid that, now. ++ */ ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ipt_ROUTE: loopback - DROP!\n"); ++ return NF_DROP; ++ } ++ ++ /* If we are at PREROUTING or INPUT hook ++ * the TTL isn't decreased by the IP stack ++ */ ++ if (hooknum == NF_IP_PRE_ROUTING || ++ hooknum == NF_IP_LOCAL_IN) { ++ ++ struct iphdr *iph = ip_hdr(skb); ++ ++ if (iph->ttl <= 1) { ++ struct rtable *rt; ++ struct flowi fl = { ++ .oif = 0, ++ .nl_u = { ++ .ip4_u = { ++ .daddr = iph->daddr, ++ .saddr = iph->saddr, ++ .tos = RT_TOS(iph->tos), ++ .scope = ((iph->tos & RTO_ONLINK) ? ++ RT_SCOPE_LINK : ++ RT_SCOPE_UNIVERSE) ++ } ++ } ++ }; ++ ++ if (ip_route_output_key(&rt, &fl)) { ++ return NF_DROP; ++ } ++ ++ if (skb->dev == rt->u.dst.dev) { ++ /* Drop old route. */ ++ dst_release(skb->dst); ++ skb->dst = &rt->u.dst; ++ ++ /* this will traverse normal stack, and ++ * thus call conntrack on the icmp packet */ ++ icmp_send(skb, ICMP_TIME_EXCEEDED, ++ ICMP_EXC_TTL, 0); ++ } ++ ++ return NF_DROP; ++ } ++ ++ /* ++ * If we are at INPUT the checksum must be recalculated since ++ * the length could change as the result of a defragmentation. ++ */ ++ if(hooknum == NF_IP_LOCAL_IN) { ++ iph->ttl = iph->ttl - 1; ++ iph->check = 0; ++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl); ++ } else { ++ ip_decrease_ttl(iph); ++ } ++ } ++ ++ if ((route_info->flags & IPT_ROUTE_TEE)) { ++ /* ++ * Copy the *pskb, and route the copy. Will later return ++ * IPT_CONTINUE for the original skb, which should continue ++ * on its way as if nothing happened. The copy should be ++ * independantly delivered to the ROUTE --gw. ++ */ ++ skb = skb_copy(*pskb, GFP_ATOMIC); ++ if (!skb) { ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ipt_ROUTE: copy failed!\n"); ++ return IPT_CONTINUE; ++ } ++ } ++ ++ /* Tell conntrack to forget this packet since it may get confused ++ * when a packet is leaving with dst address == our address. ++ * Good idea ? Dunno. Need advice. ++ * ++ * NEW: mark the skb with our &route_tee_track, so we avoid looping ++ * on any already routed packet. ++ */ ++ if (!(route_info->flags & IPT_ROUTE_CONTINUE)) { ++ nf_conntrack_put(skb->nfct); ++ skb->nfct = &route_tee_track.ct_general; ++ skb->nfctinfo = IP_CT_NEW; ++ nf_conntrack_get(skb->nfct); ++ } ++ ++ if (route_info->oif[0] != '\0') { ++ res = route_oif(route_info, skb); ++ } else if (route_info->iif[0] != '\0') { ++ res = route_iif(route_info, skb); ++ } else if (route_info->gw) { ++ res = route_gw(route_info, skb); ++ } else { ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ipt_ROUTE: no parameter !\n"); ++ res = IPT_CONTINUE; ++ } ++ ++ if ((route_info->flags & IPT_ROUTE_TEE)) ++ res = IPT_CONTINUE; ++ ++ return res; ++} ++ ++ ++static int ipt_route_checkentry(const char *tablename, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ const void *e, ++#else ++ const struct ipt_ip *ip, ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++ void *targinfo, ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ unsigned int targinfosize, ++#endif ++ unsigned int hook_mask) ++{ ++ if (strcmp(tablename, "mangle") != 0) { ++ printk("ipt_ROUTE: bad table `%s', use the `mangle' table.\n", ++ tablename); ++ return 0; ++ } ++ ++ if (hook_mask & ~( (1 << NF_IP_PRE_ROUTING) ++ | (1 << NF_IP_LOCAL_IN) ++ | (1 << NF_IP_FORWARD) ++ | (1 << NF_IP_LOCAL_OUT) ++ | (1 << NF_IP_POST_ROUTING))) { ++ printk("ipt_ROUTE: bad hook\n"); ++ return 0; ++ } ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ if (targinfosize != IPT_ALIGN(sizeof(struct ipt_route_target_info))) { ++ printk(KERN_WARNING "ipt_ROUTE: targinfosize %u != %Zu\n", ++ targinfosize, ++ IPT_ALIGN(sizeof(struct ipt_route_target_info))); ++ return 0; ++ } ++#endif ++ ++ return 1; ++} ++ ++ ++static struct ipt_target ipt_route_reg = { ++ .name = "ROUTE", ++ .target = ipt_route_target, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ .targetsize = sizeof(struct ipt_route_target_info), ++#endif ++ .checkentry = ipt_route_checkentry, ++ .me = THIS_MODULE, ++}; ++ ++static int __init init(void) ++{ ++ /* Set up fake conntrack (stolen from raw.patch): ++ - to never be deleted, not in any hashes */ ++ atomic_set(&route_tee_track.ct_general.use, 1); ++ /* - and look it like as a confirmed connection */ ++ set_bit(IPS_CONFIRMED_BIT, &route_tee_track.status); ++ /* Initialize fake conntrack so that NAT will skip it */ ++ route_tee_track.status |= IPS_NAT_DONE_MASK; ++ ++ return xt_register_target(&ipt_route_reg); ++} ++ ++ ++static void __exit fini(void) ++{ ++ xt_unregister_target(&ipt_route_reg); ++} ++ ++module_init(init); ++module_exit(fini); +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv4/netfilter/Kconfig 2007-05-26 20:37:08.734892672 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Kconfig 2007-05-26 20:37:09.002851936 +0200 +@@ -562,5 +562,22 @@ + To compile it as a module, choose M here. If unsure, say N. + + ++config IP_NF_TARGET_ROUTE ++ tristate 'ROUTE target support' ++ depends on IP_NF_MANGLE ++ help ++ This option adds a `ROUTE' target, which enables you to setup unusual ++ routes. For example, the ROUTE lets you route a received packet through ++ an interface or towards a host, even if the regular destination of the ++ packet is the router itself. The ROUTE target is also able to change the ++ incoming interface of a packet. ++ ++ The target can be or not a final target. It has to be used inside the ++ mangle table. ++ ++ If you want to compile it as a module, say M here and read ++ Documentation/modules.txt. The module will be called ipt_ROUTE.o. ++ If unsure, say `N'. ++ + endmenu + +diff -urN linux-2.6.21.1.old/net/ipv4/netfilter/Makefile linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv4/netfilter/Makefile 2007-05-26 20:37:08.735892520 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/netfilter/Makefile 2007-05-26 20:37:09.002851936 +0200 +@@ -61,6 +61,7 @@ + obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o + obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o + obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o ++obj-$(CONFIG_IP_NF_TARGET_ROUTE) += ipt_ROUTE.o + obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o + obj-$(CONFIG_IP_NF_TARGET_SAME) += ipt_SAME.o + obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o +diff -urN linux-2.6.21.1.old/net/ipv6/ndisc.c linux-2.6.21.1.dev/net/ipv6/ndisc.c +--- linux-2.6.21.1.old/net/ipv6/ndisc.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv6/ndisc.c 2007-05-26 20:37:09.003851784 +0200 +@@ -154,6 +154,8 @@ + .gc_thresh3 = 1024, + }; + ++EXPORT_SYMBOL(nd_tbl); ++ + /* ND options */ + struct ndisc_options { + struct nd_opt_hdr *nd_opt_array[__ND_OPT_ARRAY_MAX]; +diff -urN linux-2.6.21.1.old/net/ipv6/netfilter/ip6t_ROUTE.c linux-2.6.21.1.dev/net/ipv6/netfilter/ip6t_ROUTE.c +--- linux-2.6.21.1.old/net/ipv6/netfilter/ip6t_ROUTE.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/ipv6/netfilter/ip6t_ROUTE.c 2007-05-26 20:37:09.003851784 +0200 +@@ -0,0 +1,330 @@ ++/* ++ * This implements the ROUTE v6 target, which enables you to setup unusual ++ * routes not supported by the standard kernel routing table. ++ * ++ * Copyright (C) 2003 Cedric de Launois <delaunois@info.ucl.ac.be> ++ * ++ * v 1.1 2004/11/23 ++ * ++ * This software is distributed under GNU GPL v2, 1991 ++ */ ++ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/ipv6.h> ++#include <linux/netfilter_ipv6/ip6_tables.h> ++#include <linux/netfilter_ipv6/ip6t_ROUTE.h> ++#include <linux/netdevice.h> ++#include <linux/version.h> ++#include <net/ipv6.h> ++#include <net/ndisc.h> ++#include <net/ip6_route.h> ++#include <linux/icmpv6.h> ++ ++#if 1 ++#define DEBUGP printk ++#else ++#define DEBUGP(format, args...) ++#endif ++ ++#define NIP6(addr) \ ++ ntohs((addr).s6_addr16[0]), \ ++ ntohs((addr).s6_addr16[1]), \ ++ ntohs((addr).s6_addr16[2]), \ ++ ntohs((addr).s6_addr16[3]), \ ++ ntohs((addr).s6_addr16[4]), \ ++ ntohs((addr).s6_addr16[5]), \ ++ ntohs((addr).s6_addr16[6]), \ ++ ntohs((addr).s6_addr16[7]) ++ ++/* Route the packet according to the routing keys specified in ++ * route_info. Keys are : ++ * - ifindex : ++ * 0 if no oif preferred, ++ * otherwise set to the index of the desired oif ++ * - route_info->gw : ++ * 0 if no gateway specified, ++ * otherwise set to the next host to which the pkt must be routed ++ * If success, skb->dev is the output device to which the packet must ++ * be sent and skb->dst is not NULL ++ * ++ * RETURN: 1 if the packet was succesfully routed to the ++ * destination desired ++ * 0 if the kernel routing table could not route the packet ++ * according to the keys specified ++ */ ++static int ++route6(struct sk_buff *skb, ++ unsigned int ifindex, ++ const struct ip6t_route_target_info *route_info) ++{ ++ struct rt6_info *rt = NULL; ++ struct ipv6hdr *ipv6h = ipv6_hdr(skb); ++ struct in6_addr *gw = (struct in6_addr*)&route_info->gw; ++ ++ DEBUGP("ip6t_ROUTE: called with: "); ++ DEBUGP("DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(ipv6h->daddr)); ++ DEBUGP("GATEWAY=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(*gw)); ++ DEBUGP("OUT=%s\n", route_info->oif); ++ ++ if (ipv6_addr_any(gw)) ++ rt = rt6_lookup(&ipv6h->daddr, &ipv6h->saddr, ifindex, 1); ++ else ++ rt = rt6_lookup(gw, &ipv6h->saddr, ifindex, 1); ++ ++ if (!rt) ++ goto no_route; ++ ++ DEBUGP("ip6t_ROUTE: routing gives: "); ++ DEBUGP("DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(rt->rt6i_dst.addr)); ++ DEBUGP("GATEWAY=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(rt->rt6i_gateway)); ++ DEBUGP("OUT=%s\n", rt->rt6i_dev->name); ++ ++ if (ifindex && rt->rt6i_dev->ifindex!=ifindex) ++ goto wrong_route; ++ ++ if (!rt->rt6i_nexthop) { ++ DEBUGP("ip6t_ROUTE: discovering neighbour\n"); ++ rt->rt6i_nexthop = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_dst.addr); ++ } ++ ++ /* Drop old route. */ ++ dst_release(skb->dst); ++ skb->dst = &rt->u.dst; ++ skb->dev = rt->rt6i_dev; ++ return 1; ++ ++ wrong_route: ++ dst_release(&rt->u.dst); ++ no_route: ++ if (!net_ratelimit()) ++ return 0; ++ ++ printk("ip6t_ROUTE: no explicit route found "); ++ if (ifindex) ++ printk("via interface %s ", route_info->oif); ++ if (!ipv6_addr_any(gw)) ++ printk("via gateway %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x", NIP6(*gw)); ++ printk("\n"); ++ return 0; ++} ++ ++ ++/* Stolen from ip6_output_finish ++ * PRE : skb->dev is set to the device we are leaving by ++ * skb->dst is not NULL ++ * POST: the packet is sent with the link layer header pushed ++ * the packet is destroyed ++ */ ++static void ip_direct_send(struct sk_buff *skb) ++{ ++ struct dst_entry *dst = skb->dst; ++ struct hh_cache *hh = dst->hh; ++ ++ if (hh) { ++ read_lock_bh(&hh->hh_lock); ++ memcpy(skb->data - 16, hh->hh_data, 16); ++ read_unlock_bh(&hh->hh_lock); ++ skb_push(skb, hh->hh_len); ++ hh->hh_output(skb); ++ } else if (dst->neighbour) ++ dst->neighbour->output(skb); ++ else { ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ip6t_ROUTE: no hdr & no neighbour cache!\n"); ++ kfree_skb(skb); ++ } ++} ++ ++ ++static unsigned int ++route6_oif(const struct ip6t_route_target_info *route_info, ++ struct sk_buff *skb) ++{ ++ unsigned int ifindex = 0; ++ struct net_device *dev_out = NULL; ++ ++ /* The user set the interface name to use. ++ * Getting the current interface index. ++ */ ++ if ((dev_out = dev_get_by_name(route_info->oif))) { ++ ifindex = dev_out->ifindex; ++ } else { ++ /* Unknown interface name : packet dropped */ ++ if (net_ratelimit()) ++ DEBUGP("ip6t_ROUTE: oif interface %s not found\n", route_info->oif); ++ ++ if (route_info->flags & IP6T_ROUTE_CONTINUE) ++ return IP6T_CONTINUE; ++ else ++ return NF_DROP; ++ } ++ ++ /* Trying the standard way of routing packets */ ++ if (route6(skb, ifindex, route_info)) { ++ dev_put(dev_out); ++ if (route_info->flags & IP6T_ROUTE_CONTINUE) ++ return IP6T_CONTINUE; ++ ++ ip_direct_send(skb); ++ return NF_STOLEN; ++ } else ++ return NF_DROP; ++} ++ ++ ++static unsigned int ++route6_gw(const struct ip6t_route_target_info *route_info, ++ struct sk_buff *skb) ++{ ++ if (route6(skb, 0, route_info)) { ++ if (route_info->flags & IP6T_ROUTE_CONTINUE) ++ return IP6T_CONTINUE; ++ ++ ip_direct_send(skb); ++ return NF_STOLEN; ++ } else ++ return NF_DROP; ++} ++ ++ ++static unsigned int ++ip6t_route_target(struct sk_buff **pskb, ++ const struct net_device *in, ++ const struct net_device *out, ++ unsigned int hooknum, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ const void *targinfo, ++ void *userinfo) ++#else ++ const void *targinfo) ++#endif ++{ ++ const struct ip6t_route_target_info *route_info = targinfo; ++ struct sk_buff *skb = *pskb; ++ struct in6_addr *gw = (struct in6_addr*)&route_info->gw; ++ unsigned int res; ++ ++ if (route_info->flags & IP6T_ROUTE_CONTINUE) ++ goto do_it; ++ ++ /* If we are at PREROUTING or INPUT hook ++ * the TTL isn't decreased by the IP stack ++ */ ++ if (hooknum == NF_IP6_PRE_ROUTING || ++ hooknum == NF_IP6_LOCAL_IN) { ++ ++ struct ipv6hdr *ipv6h = ipv6_hdr(skb); ++ ++ if (ipv6h->hop_limit <= 1) { ++ /* Force OUTPUT device used as source address */ ++ skb->dev = skb->dst->dev; ++ ++ icmpv6_send(skb, ICMPV6_TIME_EXCEED, ++ ICMPV6_EXC_HOPLIMIT, 0, skb->dev); ++ ++ return NF_DROP; ++ } ++ ++ ipv6h->hop_limit--; ++ } ++ ++ if ((route_info->flags & IP6T_ROUTE_TEE)) { ++ /* ++ * Copy the *pskb, and route the copy. Will later return ++ * IP6T_CONTINUE for the original skb, which should continue ++ * on its way as if nothing happened. The copy should be ++ * independantly delivered to the ROUTE --gw. ++ */ ++ skb = skb_copy(*pskb, GFP_ATOMIC); ++ if (!skb) { ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ip6t_ROUTE: copy failed!\n"); ++ return IP6T_CONTINUE; ++ } ++ } ++ ++do_it: ++ if (route_info->oif[0]) { ++ res = route6_oif(route_info, skb); ++ } else if (!ipv6_addr_any(gw)) { ++ res = route6_gw(route_info, skb); ++ } else { ++ if (net_ratelimit()) ++ DEBUGP(KERN_DEBUG "ip6t_ROUTE: no parameter !\n"); ++ res = IP6T_CONTINUE; ++ } ++ ++ if ((route_info->flags & IP6T_ROUTE_TEE)) ++ res = IP6T_CONTINUE; ++ ++ return res; ++} ++ ++ ++static int ++ip6t_route_checkentry(const char *tablename, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ const void *entry, ++#else ++ const struct ip6t_entry *entry ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ const struct xt_target *target, ++#endif ++ void *targinfo, ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ unsigned int targinfosize, ++#endif ++ unsigned int hook_mask) ++{ ++ if (strcmp(tablename, "mangle") != 0) { ++ printk("ip6t_ROUTE: can only be called from \"mangle\" table.\n"); ++ return 0; ++ } ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ if (targinfosize != IP6T_ALIGN(sizeof(struct ip6t_route_target_info))) { ++ printk(KERN_WARNING "ip6t_ROUTE: targinfosize %u != %Zu\n", ++ targinfosize, ++ IP6T_ALIGN(sizeof(struct ip6t_route_target_info))); ++ return 0; ++ } ++#endif ++ ++ return 1; ++} ++ ++ ++static struct ip6t_target ip6t_route_reg = { ++ .name = "ROUTE", ++ .target = ip6t_route_target, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17) ++ .targetsize = sizeof(struct ip6t_route_target_info), ++#endif ++ .checkentry = ip6t_route_checkentry, ++ .me = THIS_MODULE ++}; ++ ++ ++static int __init init(void) ++{ ++ printk(KERN_DEBUG "registering ipv6 ROUTE target\n"); ++ if (xt_register_target(&ip6t_route_reg)) ++ return -EINVAL; ++ ++ return 0; ++} ++ ++ ++static void __exit fini(void) ++{ ++ xt_unregister_target(&ip6t_route_reg); ++} ++ ++module_init(init); ++module_exit(fini); ++MODULE_LICENSE("GPL"); +diff -urN linux-2.6.21.1.old/net/ipv6/netfilter/Kconfig linux-2.6.21.1.dev/net/ipv6/netfilter/Kconfig +--- linux-2.6.21.1.old/net/ipv6/netfilter/Kconfig 2007-05-26 20:37:08.809881272 +0200 ++++ linux-2.6.21.1.dev/net/ipv6/netfilter/Kconfig 2007-05-26 20:37:09.003851784 +0200 +@@ -209,5 +209,18 @@ + If you want to compile it as a module, say M here and read + <file:Documentation/kbuild/modules.txt>. If unsure, say `N'. + ++config IP6_NF_TARGET_ROUTE ++ tristate 'ROUTE target support' ++ depends on IP6_NF_MANGLE ++ help ++ This option adds a `ROUTE' target, which enables you to setup unusual ++ routes. The ROUTE target is also able to change the incoming interface ++ of a packet. ++ ++ The target can be or not a final target. It has to be used inside the ++ mangle table. ++ ++ Not working as a module. ++ + endmenu + +diff -urN linux-2.6.21.1.old/net/ipv6/netfilter/Makefile linux-2.6.21.1.dev/net/ipv6/netfilter/Makefile +--- linux-2.6.21.1.old/net/ipv6/netfilter/Makefile 2007-05-26 20:37:08.809881272 +0200 ++++ linux-2.6.21.1.dev/net/ipv6/netfilter/Makefile 2007-05-26 20:37:09.003851784 +0200 +@@ -20,6 +20,7 @@ + obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o + obj-$(CONFIG_IP6_NF_MATCH_HL) += ip6t_hl.o + obj-$(CONFIG_IP6_NF_TARGET_REJECT) += ip6t_REJECT.o ++obj-$(CONFIG_IP6_NF_TARGET_ROUTE) += ip6t_ROUTE.o + obj-$(CONFIG_IP6_NF_MATCH_MH) += ip6t_mh.o + + # objects for l3 independent conntrack diff --git a/target/linux/generic-2.6/patches-2.6.22/170-netfilter_chaostables.patch b/target/linux/generic-2.6/patches-2.6.22/170-netfilter_chaostables.patch new file mode 100644 index 0000000000..2bc678e961 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/170-netfilter_chaostables.patch @@ -0,0 +1,958 @@ +diff -urN linux-2.6.21.1.old/include/linux/netfilter/oot_conntrack.h linux-2.6.21.1.dev/include/linux/netfilter/oot_conntrack.h +--- linux-2.6.21.1.old/include/linux/netfilter/oot_conntrack.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter/oot_conntrack.h 2007-05-26 20:40:10.922195992 +0200 +@@ -0,0 +1,5 @@ ++#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE) ++# include <linux/netfilter_ipv4/ip_conntrack.h> ++#else /* linux-2.6.20+ */ ++# include <net/netfilter/nf_nat_rule.h> ++#endif +diff -urN linux-2.6.21.1.old/include/linux/netfilter/oot_trans.h linux-2.6.21.1.dev/include/linux/netfilter/oot_trans.h +--- linux-2.6.21.1.old/include/linux/netfilter/oot_trans.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter/oot_trans.h 2007-05-26 20:40:10.940193256 +0200 +@@ -0,0 +1,14 @@ ++/* Out of tree workarounds */ ++#include <linux/version.h> ++#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18) ++# define HAVE_MATCHINFOSIZE 1 ++# define HAVE_TARGUSERINFO 1 ++# define HAVE_TARGINFOSIZE 1 ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20) ++# define nfmark mark ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 21) ++# define tcp_v4_check(tcph, tcph_sz, s, d, csp) \ ++ tcp_v4_check((tcph_sz), (s), (d), (csp)) ++#endif +diff -urN linux-2.6.21.1.old/include/linux/netfilter/xt_CHAOS.h linux-2.6.21.1.dev/include/linux/netfilter/xt_CHAOS.h +--- linux-2.6.21.1.old/include/linux/netfilter/xt_CHAOS.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter/xt_CHAOS.h 2007-05-26 20:40:10.940193256 +0200 +@@ -0,0 +1,14 @@ ++#ifndef _LINUX_XT_CHAOS_H ++#define _LINUX_XT_CHAOS_H 1 ++ ++enum xt_chaos_variant { ++ XTCHAOS_NORMAL, ++ XTCHAOS_TARPIT, ++ XTCHAOS_DELUDE, ++}; ++ ++struct xt_chaos_info { ++ enum xt_chaos_variant variant; ++}; ++ ++#endif /* _LINUX_XT_CHAOS_H */ +diff -urN linux-2.6.21.1.old/include/linux/netfilter/xt_portscan.h linux-2.6.21.1.dev/include/linux/netfilter/xt_portscan.h +--- linux-2.6.21.1.old/include/linux/netfilter/xt_portscan.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/linux/netfilter/xt_portscan.h 2007-05-26 20:40:10.940193256 +0200 +@@ -0,0 +1,8 @@ ++#ifndef _LINUX_XT_PORTSCAN_H ++#define _LINUX_XT_PORTSCAN_H 1 ++ ++struct xt_portscan_info { ++ unsigned int match_stealth, match_syn, match_cn, match_gr; ++}; ++ ++#endif /* _LINUX_XT_PORTSCAN_H */ +diff -urN linux-2.6.21.1.old/net/netfilter/find_match.c linux-2.6.21.1.dev/net/netfilter/find_match.c +--- linux-2.6.21.1.old/net/netfilter/find_match.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/netfilter/find_match.c 2007-05-26 20:40:10.970188696 +0200 +@@ -0,0 +1,39 @@ ++/* ++ xt_request_find_match ++ by Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007 ++ ++ Based upon linux-2.6.18.5/net/netfilter/x_tables.c: ++ Copyright (C) 2006-2006 Harald Welte <laforge@netfilter.org> ++ This program is free software; you can redistribute it and/or modify ++ it under the terms of the GNU General Public License version 2 as ++ published by the Free Software Foundation. ++*/ ++#include <linux/err.h> ++#include <linux/netfilter_arp.h> ++#include <linux/socket.h> ++#include <linux/netfilter/x_tables.h> ++ ++/* ++ * Yeah this code is sub-optimal, but the function is missing in ++ * mainline so far. -jengelh ++ */ ++static struct xt_match *xt_request_find_match_lo(int af, const char *name, ++ u8 revision) ++{ ++ static const char *const xt_prefix[] = { ++ [AF_INET] = "ip", ++ [AF_INET6] = "ip6", ++ [NF_ARP] = "arp", ++ }; ++ struct xt_match *match; ++ ++ match = try_then_request_module(xt_find_match(af, name, revision), ++ "%st_%s", xt_prefix[af], name); ++ if(IS_ERR(match) || match == NULL) ++ return NULL; ++ ++ return match; ++} ++ ++/* In case it goes into mainline, let this out-of-tree package compile */ ++#define xt_request_find_match xt_request_find_match_lo +diff -urN linux-2.6.21.1.old/net/netfilter/Kconfig linux-2.6.21.1.dev/net/netfilter/Kconfig +--- linux-2.6.21.1.old/net/netfilter/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/netfilter/Kconfig 2007-05-26 20:40:11.003183680 +0200 +@@ -255,6 +255,14 @@ + + # alphabetically ordered list of targets + ++config NETFILTER_XT_TARGET_CHAOS ++ tristate '"CHAOS" target support' ++ depends on NETFILTER_XTABLES ++ help ++ This option adds a `CHAOS' target. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ + config NETFILTER_XT_TARGET_CLASSIFY + tristate '"CLASSIFY" target support' + depends on NETFILTER_XTABLES +@@ -282,6 +290,14 @@ + <file:Documentation/kbuild/modules.txt>. The module will be called + ipt_CONNMARK.ko. If unsure, say `N'. + ++config NETFILTER_XT_TARGET_DELUDE ++ tristate '"DELUDE" target support' ++ depends on NETFILTER_XTABLES ++ help ++ This option adds a `DELUDE' target. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ + config NETFILTER_XT_TARGET_DSCP + tristate '"DSCP" target support' + depends on NETFILTER_XTABLES +@@ -526,6 +542,14 @@ + + To compile it as a module, choose M here. If unsure, say N. + ++config NETFILTER_XT_MATCH_PORTSCAN ++ tristate '"portscan" match support' ++ depends on NETFILTER_XTABLES ++ help ++ This option adds a 'portscan' match support. ++ ++ To compile it as a module, choose M here. If unsure, say N. ++ + config NETFILTER_XT_MATCH_MULTIPORT + tristate "Multiple port match support" + depends on NETFILTER_XTABLES +diff -urN linux-2.6.21.1.old/net/netfilter/Makefile linux-2.6.21.1.dev/net/netfilter/Makefile +--- linux-2.6.21.1.old/net/netfilter/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/netfilter/Makefile 2007-05-26 20:40:11.003183680 +0200 +@@ -37,8 +37,10 @@ + obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o + + # targets ++obj-$(CONFIG_NETFILTER_XT_TARGET_CHAOS) += xt_CHAOS.o + obj-$(CONFIG_NETFILTER_XT_TARGET_CLASSIFY) += xt_CLASSIFY.o + obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o ++obj-$(CONFIG_NETFILTER_XT_TARGET_DELUDE) += xt_DELUDE.o + obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o + obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o + obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o +@@ -63,6 +65,7 @@ + obj-$(CONFIG_NETFILTER_XT_MATCH_MARK) += xt_mark.o + obj-$(CONFIG_NETFILTER_XT_MATCH_MULTIPORT) += xt_multiport.o + obj-$(CONFIG_NETFILTER_XT_MATCH_POLICY) += xt_policy.o ++obj-$(CONFIG_NETFILTER_XT_MATCH_PORTSCAN) += xt_portscan.o + obj-$(CONFIG_NETFILTER_XT_MATCH_PKTTYPE) += xt_pkttype.o + obj-$(CONFIG_NETFILTER_XT_MATCH_QUOTA) += xt_quota.o + obj-$(CONFIG_NETFILTER_XT_MATCH_REALM) += xt_realm.o +diff -urN linux-2.6.21.1.old/net/netfilter/xt_CHAOS.c linux-2.6.21.1.dev/net/netfilter/xt_CHAOS.c +--- linux-2.6.21.1.old/net/netfilter/xt_CHAOS.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/netfilter/xt_CHAOS.c 2007-05-26 20:40:11.004183528 +0200 +@@ -0,0 +1,204 @@ ++/* ++ CHAOS target for netfilter ++ ++ Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007 ++ This program is free software; you can redistribute it and/or modify ++ it under the terms of the GNU General Public License version 2 as ++ published by the Free Software Foundation. ++*/ ++#include <linux/icmp.h> ++#include <linux/in.h> ++#include <linux/ip.h> ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/stat.h> ++#include <linux/netfilter/x_tables.h> ++#include <linux/netfilter/xt_tcpudp.h> ++#include <linux/netfilter_ipv4/ipt_REJECT.h> ++#include <net/ip.h> ++#include <linux/netfilter/xt_CHAOS.h> ++#include "find_match.c" ++#include <linux/netfilter/oot_trans.h> ++#define PFX KBUILD_MODNAME ": " ++ ++/* Module parameters */ ++static unsigned int reject_percentage = ~0U * .01; ++static unsigned int delude_percentage = ~0U * .0101; ++module_param(reject_percentage, uint, S_IRUGO | S_IWUSR); ++module_param(delude_percentage, uint, S_IRUGO | S_IWUSR); ++ ++/* References to other matches/targets */ ++static struct xt_match *xm_tcp; ++static struct xt_target *xt_delude, *xt_reject, *xt_tarpit; ++ ++static int have_delude, have_tarpit; ++ ++/* Static data for other matches/targets */ ++static const struct ipt_reject_info reject_params = { ++ .with = ICMP_HOST_UNREACH, ++}; ++ ++static const struct xt_tcp tcp_params = { ++ .spts = {0, ~0}, ++ .dpts = {0, ~0}, ++}; ++ ++/* CHAOS functions */ ++static void xt_chaos_total(const struct xt_chaos_info *info, ++ struct sk_buff **pskb, const struct net_device *in, ++ const struct net_device *out, unsigned int hooknum) ++{ ++ const int protoff = ip_hdrlen(*pskb); ++ const int offset = ntohs(ip_hdr(*pskb)->frag_off) & IP_OFFSET; ++ const struct xt_target *destiny; ++ int hotdrop = 0, ret; ++ ++ ret = xm_tcp->match(*pskb, in, out, xm_tcp, &tcp_params, ++ offset, protoff, &hotdrop); ++ if(!ret || hotdrop || (unsigned int)net_random() > delude_percentage) ++ return; ++ ++ destiny = (info->variant == XTCHAOS_TARPIT) ? xt_tarpit : xt_delude; ++#ifdef HAVE_TARGUSERINFO ++ destiny->target(pskb, in, out, hooknum, destiny, NULL, NULL); ++#else ++ destiny->target(pskb, in, out, hooknum, destiny, NULL); ++#endif ++ return; ++} ++ ++static unsigned int xt_chaos_target(struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ unsigned int hooknum, const struct xt_target *target, const void *targinfo ++#ifdef HAVE_TARGUSERINFO ++ , ++ void *userinfo ++#endif ++ ) ++{ ++ /* Equivalent to: ++ * -A chaos -m statistic --mode random --probability \ ++ * $reject_percentage -j REJECT --reject-with host-unreach; ++ * -A chaos -p tcp -m statistic --mode random --probability \ ++ * $delude_percentage -j DELUDE; ++ * -A chaos -j DROP; ++ */ ++ const struct xt_chaos_info *info = targinfo; ++ ++ if((unsigned int)net_random() <= reject_percentage) ++#ifdef HAVE_TARGUSERINFO ++ return xt_reject->target(pskb, in, out, hooknum, target, ++ &reject_params, userinfo); ++#else ++ return xt_reject->target(pskb, in, out, hooknum, target, ++ &reject_params); ++#endif ++ ++ /* TARPIT/DELUDE may not be called from the OUTPUT chain */ ++ if(ip_hdr(*pskb)->protocol == IPPROTO_TCP && ++ info->variant != XTCHAOS_NORMAL && hooknum != NF_IP_LOCAL_OUT) ++ xt_chaos_total(info, pskb, in, out, hooknum); ++ ++ return NF_DROP; ++} ++ ++static int xt_chaos_checkentry(const char *tablename, const void *entry, ++ const struct xt_target *target, void *targinfo, ++#ifdef HAVE_TARGINFOSIZE ++ unsigned int targinfosize, ++#endif ++ unsigned int hook_mask) ++{ ++ const struct xt_chaos_info *info = targinfo; ++ if(info->variant == XTCHAOS_DELUDE && !have_delude) { ++ printk(KERN_WARNING PFX "Error: Cannot use --delude when " ++ "DELUDE module not available\n"); ++ return 0; ++ } ++ if(info->variant == XTCHAOS_TARPIT && !have_tarpit) { ++ printk(KERN_WARNING PFX "Error: Cannot use --tarpit when " ++ "TARPIT module not available\n"); ++ return 0; ++ } ++ return 1; ++} ++ ++static struct xt_target xt_chaos_info = { ++ .name = "CHAOS", ++ .target = xt_chaos_target, ++ .checkentry = xt_chaos_checkentry, ++ .table = "filter", ++ .targetsize = sizeof(struct xt_chaos_info), ++ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) | ++ (1 << NF_IP_LOCAL_OUT), ++ .family = AF_INET, ++ .me = THIS_MODULE, ++}; ++ ++static int __init xt_chaos_init(void) ++{ ++ int ret = -EINVAL; ++ ++ xm_tcp = xt_request_find_match(AF_INET, "tcp", 0); ++ if(xm_tcp == NULL) { ++ printk(KERN_WARNING PFX "Error: Could not find or load " ++ "\"tcp\" match\n"); ++ return -EINVAL; ++ } ++ ++ xt_reject = xt_request_find_target(AF_INET, "REJECT", 0); ++ if(xt_reject == NULL) { ++ printk(KERN_WARNING PFX "Error: Could not find or load " ++ "\"REJECT\" target\n"); ++ goto out2; ++ } ++ ++ xt_tarpit = xt_request_find_target(AF_INET, "TARPIT", 0); ++ have_tarpit = xt_tarpit != NULL; ++ if(!have_tarpit) ++ printk(KERN_WARNING PFX "Warning: Could not find or load " ++ "\"TARPIT\" target\n"); ++ ++ xt_delude = xt_request_find_target(AF_INET, "DELUDE", 0); ++ have_delude = xt_delude != NULL; ++ if(!have_delude) ++ printk(KERN_WARNING PFX "Warning: Could not find or load " ++ "\"DELUDE\" target\n"); ++ ++ if((ret = xt_register_target(&xt_chaos_info)) != 0) { ++ printk(KERN_WARNING PFX "xt_register_target returned " ++ "error %d\n", ret); ++ goto out3; ++ } ++ ++ return 0; ++ ++ out3: ++ if(have_delude) ++ module_put(xt_delude->me); ++ if(have_tarpit) ++ module_put(xt_tarpit->me); ++ module_put(xt_reject->me); ++ out2: ++ module_put(xm_tcp->me); ++ return ret; ++} ++ ++static void __exit xt_chaos_exit(void) ++{ ++ xt_unregister_target(&xt_chaos_info); ++ module_put(xm_tcp->me); ++ module_put(xt_reject->me); ++ if(have_delude) ++ module_put(xt_delude->me); ++ if(have_tarpit) ++ module_put(xt_tarpit->me); ++ return; ++} ++ ++module_init(xt_chaos_init); ++module_exit(xt_chaos_exit); ++MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>"); ++MODULE_DESCRIPTION("netfilter CHAOS target"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("ipt_CHAOS"); +diff -urN linux-2.6.21.1.old/net/netfilter/xt_DELUDE.c linux-2.6.21.1.dev/net/netfilter/xt_DELUDE.c +--- linux-2.6.21.1.old/net/netfilter/xt_DELUDE.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/netfilter/xt_DELUDE.c 2007-05-26 20:40:11.004183528 +0200 +@@ -0,0 +1,288 @@ ++/* ++ DELUDE target ++ Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2007 ++ ++ Based upon linux-2.6.18.5/net/ipv4/netfilter/ipt_REJECT.c: ++ (C) 1999-2001 Paul `Rusty' Russell ++ (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> ++ ++ xt_DELUDE acts like REJECT, but does reply with SYN-ACK on SYN. ++ ++ This program is free software; you can redistribute it and/or modify ++ it under the terms of the GNU General Public License version 2 as ++ published by the Free Software Foundation. ++*/ ++#include <linux/module.h> ++#include <linux/skbuff.h> ++#include <linux/ip.h> ++#include <linux/random.h> ++#include <linux/tcp.h> ++#include <linux/udp.h> ++#include <linux/icmp.h> ++#include <net/icmp.h> ++#include <net/ip.h> ++#include <net/tcp.h> ++#include <net/route.h> ++#include <net/dst.h> ++#include <linux/netfilter_ipv4/ip_tables.h> ++#ifdef CONFIG_BRIDGE_NETFILTER ++# include <linux/netfilter_bridge.h> ++#endif ++#include <linux/netfilter/oot_trans.h> ++#define PFX KBUILD_MODNAME ": " ++ ++static inline struct rtable *route_reverse(struct sk_buff *skb, ++ struct tcphdr *tcph, int hook) ++{ ++ struct iphdr *iph = ip_hdr(skb); ++ struct dst_entry *odst; ++ struct flowi fl = {}; ++ struct rtable *rt; ++ ++ /* We don't require ip forwarding to be enabled to be able to ++ * send a RST reply for bridged traffic. */ ++ if (hook != NF_IP_FORWARD ++#ifdef CONFIG_BRIDGE_NETFILTER ++ || (skb->nf_bridge && skb->nf_bridge->mask & BRNF_BRIDGED) ++#endif ++ ) { ++ fl.nl_u.ip4_u.daddr = iph->saddr; ++ if (hook == NF_IP_LOCAL_IN) ++ fl.nl_u.ip4_u.saddr = iph->daddr; ++ fl.nl_u.ip4_u.tos = RT_TOS(iph->tos); ++ ++ if (ip_route_output_key(&rt, &fl) != 0) ++ return NULL; ++ } else { ++ /* non-local src, find valid iif to satisfy ++ * rp-filter when calling ip_route_input. */ ++ fl.nl_u.ip4_u.daddr = iph->daddr; ++ if (ip_route_output_key(&rt, &fl) != 0) ++ return NULL; ++ ++ odst = skb->dst; ++ if (ip_route_input(skb, iph->saddr, iph->daddr, ++ RT_TOS(iph->tos), rt->u.dst.dev) != 0) { ++ dst_release(&rt->u.dst); ++ return NULL; ++ } ++ dst_release(&rt->u.dst); ++ rt = (struct rtable *)skb->dst; ++ skb->dst = odst; ++ ++ fl.nl_u.ip4_u.daddr = iph->saddr; ++ fl.nl_u.ip4_u.saddr = iph->daddr; ++ fl.nl_u.ip4_u.tos = RT_TOS(iph->tos); ++ } ++ ++ if (rt->u.dst.error) { ++ dst_release(&rt->u.dst); ++ return NULL; ++ } ++ ++ fl.proto = IPPROTO_TCP; ++ fl.fl_ip_sport = tcph->dest; ++ fl.fl_ip_dport = tcph->source; ++ ++ xfrm_lookup((struct dst_entry **)&rt, &fl, NULL, 0); ++ ++ return rt; ++} ++ ++static void send_reset(struct sk_buff *oldskb, int hook) ++{ ++ struct sk_buff *nskb; ++ struct iphdr *iph = ip_hdr(oldskb); ++ struct tcphdr _otcph, *oth, *tcph; ++ __be16 tmp_port; ++ __be32 tmp_addr; ++ int needs_ack; ++ unsigned int addr_type; ++ ++ /* IP header checks: fragment. */ ++ if (iph->frag_off & htons(IP_OFFSET)) ++ return; ++ ++ oth = skb_header_pointer(oldskb, ip_hdrlen(oldskb), ++ sizeof(_otcph), &_otcph); ++ if (oth == NULL) ++ return; ++ ++ /* No RST for RST. */ ++ if (oth->rst) ++ return; ++ ++ /* Check checksum */ ++ if (nf_ip_checksum(oldskb, hook, ip_hdrlen(oldskb), IPPROTO_TCP)) ++ return; ++ ++ /* We need a linear, writeable skb. We also need to expand ++ headroom in case hh_len of incoming interface < hh_len of ++ outgoing interface */ ++ nskb = skb_copy_expand(oldskb, LL_MAX_HEADER, skb_tailroom(oldskb), ++ GFP_ATOMIC); ++ if (!nskb) ++ return; ++ ++ /* This packet will not be the same as the other: clear nf fields */ ++ nf_reset(nskb); ++ nskb->nfmark = 0; ++ skb_init_secmark(nskb); ++ ++ skb_shinfo(nskb)->gso_size = 0; ++ skb_shinfo(nskb)->gso_segs = 0; ++ skb_shinfo(nskb)->gso_type = 0; ++ ++ tcph = tcp_hdr(nskb); ++ ++ /* Swap source and dest */ ++ tmp_addr = ip_hdr(nskb)->saddr; ++ ip_hdr(nskb)->saddr = ip_hdr(nskb)->daddr; ++ ip_hdr(nskb)->daddr = tmp_addr; ++ tmp_port = tcph->source; ++ tcph->source = tcph->dest; ++ tcph->dest = tmp_port; ++ ++ /* Truncate to length (no data) */ ++ tcph->doff = sizeof(struct tcphdr)/4; ++ skb_trim(nskb, ip_hdrlen(nskb) + sizeof(struct tcphdr)); ++ ip_hdr(nskb)->tot_len = htons(nskb->len); ++ ++ if(oth->syn && !oth->ack && !oth->rst && !oth->fin) { ++ /* DELUDE essential part */ ++ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin + ++ oldskb->len - ip_hdrlen(oldskb) - ++ (oth->doff << 2)); ++ tcph->seq = htonl(secure_tcp_sequence_number( ++ ip_hdr(nskb)->saddr, ip_hdr(nskb)->daddr, ++ tcph->source, tcph->dest)); ++ tcph->ack = 1; ++ } else { ++ if(!tcph->ack) { ++ needs_ack = 1; ++ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin ++ + oldskb->len - ip_hdrlen(oldskb) ++ - (oth->doff<<2)); ++ tcph->seq = 0; ++ } else { ++ needs_ack = 0; ++ tcph->seq = oth->ack_seq; ++ tcph->ack_seq = 0; ++ } ++ ++ /* Reset flags */ ++ ((u_int8_t *)tcph)[13] = 0; ++ tcph->rst = 1; ++ tcph->ack = needs_ack; ++ } ++ ++ ++ tcph->window = 0; ++ tcph->urg_ptr = 0; ++ ++ /* Adjust TCP checksum */ ++ tcph->check = 0; ++ tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr), ++ ip_hdr(nskb)->saddr, ++ ip_hdr(nskb)->daddr, ++ csum_partial((char *)tcph, ++ sizeof(struct tcphdr), 0)); ++ ++ /* Set DF, id = 0 */ ++ ip_hdr(nskb)->frag_off = htons(IP_DF); ++ ip_hdr(nskb)->id = 0; ++ ++ addr_type = RTN_UNSPEC; ++ if (hook != NF_IP_FORWARD ++#ifdef CONFIG_BRIDGE_NETFILTER ++ || (nskb->nf_bridge && nskb->nf_bridge->mask & BRNF_BRIDGED) ++#endif ++ ) ++ addr_type = RTN_LOCAL; ++ ++ if (ip_route_me_harder(&nskb, addr_type)) ++ goto free_nskb; ++ ++ nskb->ip_summed = CHECKSUM_NONE; ++ ++ /* Adjust IP TTL */ ++ ip_hdr(nskb)->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT); ++ ++ /* Adjust IP checksum */ ++ ip_hdr(nskb)->check = 0; ++ ip_hdr(nskb)->check = ip_fast_csum((unsigned char *)ip_hdr(nskb), ++ ip_hdr(nskb)->ihl); ++ ++ /* "Never happens" */ ++ if (nskb->len > dst_mtu(nskb->dst)) ++ goto free_nskb; ++ ++ nf_ct_attach(nskb, oldskb); ++ ++ NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, nskb, NULL, nskb->dst->dev, ++ dst_output); ++ return; ++ ++ free_nskb: ++ kfree_skb(nskb); ++} ++ ++static unsigned int xt_delude_target(struct sk_buff **pskb, ++ const struct net_device *in, const struct net_device *out, ++ unsigned int hooknum, const struct xt_target *target, const void *targinfo ++#ifdef HAVE_TARGUSERINFO ++ , ++ void *userinfo ++#endif ++ ) ++{ ++ /* WARNING: This code causes reentry within iptables. ++ This means that the iptables jump stack is now crap. We ++ must return an absolute verdict. --RR */ ++ send_reset(*pskb, hooknum); ++ return NF_DROP; ++} ++ ++static int xt_delude_check(const char *tablename, const void *e_void, ++ const struct xt_target *target, void *targinfo, ++#ifdef HAVE_TARGINFOSIZE ++ unsigned int targinfosize, ++#endif ++ unsigned int hook_mask) ++{ ++ if(hook_mask & ~((1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD))) { ++ printk(KERN_WARNING PFX "DELUDE may not be used in chains " ++ "other than INPUT and FORWARD\n"); ++ return 0; ++ } ++ return 1; ++} ++ ++static struct xt_target xt_delude_info = { ++ .name = "DELUDE", ++ .target = xt_delude_target, ++ .checkentry = xt_delude_check, ++ .table = "filter", ++ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) | ++ (1 << NF_IP_LOCAL_OUT), ++ .proto = IPPROTO_TCP, ++ .family = AF_INET, ++ .me = THIS_MODULE, ++}; ++ ++static int __init xt_delude_init(void) ++{ ++ return xt_register_target(&xt_delude_info); ++} ++ ++static void __exit xt_delude_exit(void) ++{ ++ xt_unregister_target(&xt_delude_info); ++} ++ ++module_init(xt_delude_init); ++module_exit(xt_delude_exit); ++MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>"); ++MODULE_DESCRIPTION("netfilter DELUDE target"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("ipt_DELUDE"); +diff -urN linux-2.6.21.1.old/net/netfilter/xt_portscan.c linux-2.6.21.1.dev/net/netfilter/xt_portscan.c +--- linux-2.6.21.1.old/net/netfilter/xt_portscan.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/netfilter/xt_portscan.c 2007-05-26 20:40:11.004183528 +0200 +@@ -0,0 +1,272 @@ ++/* ++ portscan match for netfilter ++ ++ Written by Jan Engelhardt, 2006 - 2007 ++ This program is free software; you can redistribute it and/or modify ++ it under the terms of the GNU General Public License version 2 as ++ published by the Free Software Foundation. ++*/ ++#include <linux/in.h> ++#include <linux/ip.h> ++#include <linux/module.h> ++#include <linux/moduleparam.h> ++#include <linux/skbuff.h> ++#include <linux/stat.h> ++#include <linux/tcp.h> ++#include <linux/types.h> ++#include <linux/version.h> ++#include <linux/netfilter/x_tables.h> ++#include <linux/netfilter/xt_tcpudp.h> ++#include <linux/netfilter/oot_conntrack.h> ++#include <linux/netfilter/xt_portscan.h> ++#include <linux/netfilter/oot_trans.h> ++#define PFX KBUILD_MODNAME ": " ++ ++enum { ++ TCP_FLAGS_ALL3 = TCP_FLAG_FIN | TCP_FLAG_RST | TCP_FLAG_SYN, ++ TCP_FLAGS_ALL4 = TCP_FLAGS_ALL3 | TCP_FLAG_ACK, ++ TCP_FLAGS_ALL6 = TCP_FLAGS_ALL4 | TCP_FLAG_PSH | TCP_FLAG_URG, ++}; ++ ++/* Module parameters */ ++static unsigned int ++ connmark_mask = ~0, ++ packet_mask = ~0, ++ mark_seen = 0x9, ++ mark_synrcv = 0x1, ++ mark_closed = 0x2, ++ mark_synscan = 0x3, ++ mark_estab1 = 0x4, ++ mark_estab2 = 0x5, ++ mark_cnscan = 0x6, ++ mark_grscan = 0x7, ++ mark_valid = 0x8; ++ ++module_param(connmark_mask, uint, S_IRUGO | S_IWUSR); ++module_param(packet_mask, uint, S_IRUGO | S_IWUSR); ++module_param(mark_seen, uint, S_IRUGO | S_IWUSR); ++module_param(mark_synrcv, uint, S_IRUGO | S_IWUSR); ++module_param(mark_closed, uint, S_IRUGO | S_IWUSR); ++module_param(mark_synscan, uint, S_IRUGO | S_IWUSR); ++module_param(mark_estab1, uint, S_IRUGO | S_IWUSR); ++module_param(mark_estab2, uint, S_IRUGO | S_IWUSR); ++module_param(mark_cnscan, uint, S_IRUGO | S_IWUSR); ++module_param(mark_grscan, uint, S_IRUGO | S_IWUSR); ++module_param(mark_valid, uint, S_IRUGO | S_IWUSR); ++MODULE_PARM_DESC(connmark_mask, "only set specified bits in connection mark"); ++MODULE_PARM_DESC(packet_mask, "only set specified bits in packet mark"); ++MODULE_PARM_DESC(mark_seen, "nfmark value for packet-seen state"); ++MODULE_PARM_DESC(mark_synrcv, "connmark value for SYN Received state"); ++MODULE_PARM_DESC(mark_closed, "connmark value for closed state"); ++MODULE_PARM_DESC(mark_synscan, "connmark value for SYN Scan state"); ++MODULE_PARM_DESC(mark_estab1, "connmark value for Established-1 state"); ++MODULE_PARM_DESC(mark_estab2, "connmark value for Established-2 state"); ++MODULE_PARM_DESC(mark_cnscan, "connmark value for Connect Scan state"); ++MODULE_PARM_DESC(mark_grscan, "connmark value for Grab Scan state"); ++MODULE_PARM_DESC(mark_valid, "connmark value for Valid state"); ++ ++/* TCP flag functions */ ++static inline int tflg_ack4(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == TCP_FLAG_ACK; ++} ++ ++static inline int tflg_ack6(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL6) == TCP_FLAG_ACK; ++} ++ ++static inline int tflg_fin(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL3) == TCP_FLAG_FIN; ++} ++ ++static inline int tflg_rst(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL3) == TCP_FLAG_RST; ++} ++ ++static inline int tflg_rstack(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == ++ (TCP_FLAG_ACK | TCP_FLAG_RST); ++} ++ ++static inline int tflg_syn(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == TCP_FLAG_SYN; ++} ++ ++static inline int tflg_synack(const struct tcphdr *th) ++{ ++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == ++ (TCP_FLAG_SYN | TCP_FLAG_ACK); ++} ++ ++/* portscan functions */ ++static inline int xt_portscan_stealth(const struct tcphdr *th) ++{ ++ /* ++ * "Connection refused" replies to our own probes must not be matched. ++ */ ++ if(tflg_rstack(th)) ++ return 0; ++ ++ if(tflg_rst(th) && printk_ratelimit()) { ++ printk(KERN_WARNING PFX "Warning: Pure RST received\n"); ++ return 0; ++ } ++ ++ /* ++ * -p tcp ! --syn -m conntrack --ctstate INVALID: Looking for non-start ++ * packets that are not associated with any connection -- this will ++ * match most scan types (NULL, XMAS, FIN) and ridiculous flag ++ * combinations (SYN-RST, SYN-FIN, SYN-FIN-RST, FIN-RST, etc.). ++ */ ++ return !tflg_syn(th); ++} ++ ++static inline int xt_portscan_full(int mark, enum ip_conntrack_info ctstate, ++ int loopback, const struct tcphdr *tcph, int payload_len) ++{ ++ if(mark == mark_estab2) { ++ /* ++ * -m connmark --mark $ESTAB2 ++ */ ++ if(tflg_ack4(tcph) && payload_len == 0) ++ return mark; /* keep mark */ ++ else if(tflg_rst(tcph) || tflg_fin(tcph)) ++ return mark_grscan; ++ else ++ return mark_valid; ++ } else if(mark == mark_estab1) { ++ /* ++ * -m connmark --mark $ESTAB1 ++ */ ++ if(tflg_rst(tcph) || tflg_fin(tcph)) ++ return mark_cnscan; ++ else if(!loopback && tflg_ack4(tcph) && payload_len == 0) ++ return mark_estab2; ++ else ++ return mark_valid; ++ } else if(mark == mark_synrcv) { ++ /* ++ * -m connmark --mark $SYN ++ */ ++ if(loopback && tflg_synack(tcph)) ++ return mark; /* keep mark */ ++ else if(loopback && tflg_rstack(tcph)) ++ return mark_closed; ++ else if(tflg_ack6(tcph)) ++ return mark_estab1; ++ else ++ return mark_synscan; ++ } else if(ctstate == IP_CT_NEW && tflg_syn(tcph)) { ++ /* ++ * -p tcp --syn --ctstate NEW ++ */ ++ return mark_synrcv; ++ } ++ return mark; ++} ++ ++static int xt_portscan_match(const struct sk_buff *skb, ++ const struct net_device *in, const struct net_device *out, ++ const struct xt_match *match, const void *matchinfo, int offset, ++ unsigned int protoff, int *hotdrop) ++{ ++ const struct xt_portscan_info *info = matchinfo; ++ enum ip_conntrack_info ctstate; ++ struct nf_conn *ctdata; ++ const struct tcphdr *tcph; ++ struct tcphdr tcph_buf; ++ ++ tcph = skb_header_pointer(skb, protoff, sizeof(tcph_buf), &tcph_buf); ++ if(tcph == NULL) ++ return 0; ++ ++ /* Check for invalid packets: -m conntrack --ctstate INVALID */ ++ if((ctdata = nf_ct_get(skb, &ctstate)) == NULL) { ++ if(info->match_stealth) ++ return xt_portscan_stealth(tcph); ++ /* ++ * If @ctdata is NULL, we cannot match the other scan ++ * types, return. ++ */ ++ return 0; ++ } ++ ++ /* ++ * If -m portscan was previously applied to this packet, the rules we ++ * simulate must not be run through again. And for speedup, do not call ++ * it either when the connection is already VALID. ++ */ ++ if((ctdata->mark & connmark_mask) == mark_valid || ++ (skb->nfmark & packet_mask) != mark_seen) ++ { ++ unsigned int n; ++ n = xt_portscan_full(ctdata->mark & connmark_mask, ctstate, ++ in == &loopback_dev, tcph, ++ skb->len - protoff - 4 * tcph->doff); ++ ++ ctdata->mark = (ctdata->mark & ~connmark_mask) | n; ++ ((struct sk_buff *)skb)->nfmark = ++ (skb->nfmark & ~packet_mask) | mark_seen; ++ } ++ ++ return (info->match_syn && ctdata->mark == mark_synscan) || ++ (info->match_cn && ctdata->mark == mark_cnscan) || ++ (info->match_gr && ctdata->mark == mark_grscan); ++} ++ ++static int xt_portscan_checkentry(const char *tablename, const void *entry, ++ const struct xt_match *match, void *matchinfo, ++#ifdef HAVE_MATCHINFOSIZE ++ unsigned int matchinfosize, ++#endif ++ unsigned int hook_mask) ++{ ++ const struct xt_portscan_info *info = matchinfo; ++#ifdef HAVE_MATCHINFOSIZE ++ if(matchinfosize != XT_ALIGN(sizeof(struct xt_portscan_info))) { ++ printk(KERN_WARNING PFX "matchinfosize %u != %Zu\n", ++ matchinfosize, ++ XT_ALIGN(sizeof(struct xt_portscan_info))); ++ return 0; ++ } ++#endif ++ if((info->match_stealth & ~1) || (info->match_syn & ~1) || ++ (info->match_cn & ~1) || (info->match_gr & ~1)) { ++ printk(KERN_WARNING PFX "Invalid flags\n"); ++ return 0; ++ } ++ return 1; ++} ++ ++static struct xt_match xt_portscan = { ++ .name = "portscan", ++ .match = xt_portscan_match, ++ .checkentry = xt_portscan_checkentry, ++ .matchsize = sizeof(struct xt_portscan_info), ++ .proto = IPPROTO_TCP, ++ .family = AF_INET, ++ .me = THIS_MODULE, ++}; ++ ++static int __init xt_portscan_init(void) ++{ ++ return xt_register_match(&xt_portscan); ++} ++ ++static void __exit xt_portscan_exit(void) ++{ ++ xt_unregister_match(&xt_portscan); ++ return; ++} ++ ++module_init(xt_portscan_init); ++module_exit(xt_portscan_exit); ++MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>"); ++MODULE_DESCRIPTION("netfilter portscan match module"); ++MODULE_LICENSE("GPL"); ++MODULE_ALIAS("ipt_portscan"); +diff -urN linux-2.6.22-rc3.old/drivers/char/random.c linux-2.6.22-rc3.dev/drivers/char/random.c +--- linux-2.6.22-rc3.old/drivers/char/random.c 2007-05-26 03:55:14.000000000 +0100 ++++ linux-2.6.22-rc3.dev/drivers/char/random.c 2007-05-29 11:21:53.000000000 +0100 +@@ -1557,6 +1557,8 @@ + return seq; + } + ++EXPORT_SYMBOL(secure_tcp_sequence_number); ++ + /* Generate secure starting point for ephemeral IPV4 transport port search */ + u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport) + { diff --git a/target/linux/generic-2.6/patches-2.6.22/180-netfilter_depends.patch b/target/linux/generic-2.6/patches-2.6.22/180-netfilter_depends.patch new file mode 100644 index 0000000000..435027d68b --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/180-netfilter_depends.patch @@ -0,0 +1,20 @@ +--- linux.old/net/netfilter/Kconfig 2007-05-26 20:05:39.270134976 +0200 ++++ linux.dev/net/netfilter/Kconfig 2007-05-26 20:12:44.258526920 +0200 +@@ -133,7 +133,7 @@ + + config NF_CONNTRACK_H323 + tristate "H.323 protocol support (EXPERIMENTAL)" +- depends on EXPERIMENTAL && NF_CONNTRACK && (IPV6 || IPV6=n) ++ depends on EXPERIMENTAL && NF_CONNTRACK + help + H.323 is a VoIP signalling protocol from ITU-T. As one of the most + important VoIP protocols, it is widely used by voice hardware and +@@ -381,7 +381,7 @@ + + config NETFILTER_XT_TARGET_TCPMSS + tristate '"TCPMSS" target support' +- depends on NETFILTER_XTABLES && (IPV6 || IPV6=n) ++ depends on NETFILTER_XTABLES + ---help--- + This option adds a `TCPMSS' target, which allows you to alter the + MSS value of TCP SYN packets, to control the maximum size for that diff --git a/target/linux/generic-2.6/patches-2.6.22/200-sched_esfq.patch b/target/linux/generic-2.6/patches-2.6.22/200-sched_esfq.patch new file mode 100644 index 0000000000..9b096b347c --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/200-sched_esfq.patch @@ -0,0 +1,793 @@ +diff -urN linux-2.6.21.1.old/include/linux/pkt_sched.h linux-2.6.21.1.dev/include/linux/pkt_sched.h +--- linux-2.6.21.1.old/include/linux/pkt_sched.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/linux/pkt_sched.h 2007-05-26 20:43:12.530587320 +0200 +@@ -146,8 +146,40 @@ + * + * The only reason for this is efficiency, it is possible + * to change these parameters in compile time. ++ * ++ * If you need to play with these values use esfq instead. + */ + ++/* ESFQ section */ ++ ++enum ++{ ++ /* traditional */ ++ TCA_SFQ_HASH_CLASSIC, ++ TCA_SFQ_HASH_DST, ++ TCA_SFQ_HASH_SRC, ++ TCA_SFQ_HASH_FWMARK, ++ /* direct */ ++ TCA_SFQ_HASH_DSTDIR, ++ TCA_SFQ_HASH_SRCDIR, ++ TCA_SFQ_HASH_FWMARKDIR, ++ /* conntrack */ ++ TCA_SFQ_HASH_CTORIGDST, ++ TCA_SFQ_HASH_CTORIGSRC, ++ TCA_SFQ_HASH_CTREPLDST, ++ TCA_SFQ_HASH_CTREPLSRC, ++}; ++ ++struct tc_esfq_qopt ++{ ++ unsigned quantum; /* Bytes per round allocated to flow */ ++ int perturb_period; /* Period of hash perturbation */ ++ __u32 limit; /* Maximal packets in queue */ ++ unsigned divisor; /* Hash divisor */ ++ unsigned flows; /* Maximal number of flows */ ++ unsigned hash_kind; /* Hash function to use for flow identification */ ++}; ++ + /* RED section */ + + enum +diff -urN linux-2.6.21.1.old/net/sched/Kconfig linux-2.6.21.1.dev/net/sched/Kconfig +--- linux-2.6.21.1.old/net/sched/Kconfig 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/sched/Kconfig 2007-05-26 20:43:12.572580936 +0200 +@@ -133,6 +133,26 @@ + To compile this code as a module, choose M here: the + module will be called sch_sfq. + ++config NET_SCH_ESFQ ++ tristate "Enhanced Stochastic Fairness Queueing (ESFQ)" ++ ---help--- ++ Say Y here if you want to use the Enhanced Stochastic Fairness ++ Queueing (ESFQ) packet scheduling algorithm for some of your network ++ devices or as a leaf discipline for a classful qdisc such as HTB or ++ CBQ (see the top of <file:net/sched/sch_esfq.c> for details and ++ references to the SFQ algorithm). ++ ++ This is an enchanced SFQ version which allows you to control some ++ hardcoded values in the SFQ scheduler. ++ ++ ESFQ also adds control of the hash function used to identify packet ++ flows. The original SFQ discipline hashes by connection; ESFQ add ++ several other hashing methods, such as by src IP or by dst IP, which ++ can be more fair to users in some networking situations. ++ ++ To compile this code as a module, choose M here: the ++ module will be called sch_esfq. ++ + config NET_SCH_TEQL + tristate "True Link Equalizer (TEQL)" + ---help--- +diff -urN linux-2.6.21.1.old/net/sched/Makefile linux-2.6.21.1.dev/net/sched/Makefile +--- linux-2.6.21.1.old/net/sched/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/sched/Makefile 2007-05-26 20:43:12.577580176 +0200 +@@ -23,6 +23,7 @@ + obj-$(CONFIG_NET_SCH_INGRESS) += sch_ingress.o + obj-$(CONFIG_NET_SCH_DSMARK) += sch_dsmark.o + obj-$(CONFIG_NET_SCH_SFQ) += sch_sfq.o ++obj-$(CONFIG_NET_SCH_ESFQ) += sch_esfq.o + obj-$(CONFIG_NET_SCH_TBF) += sch_tbf.o + obj-$(CONFIG_NET_SCH_TEQL) += sch_teql.o + obj-$(CONFIG_NET_SCH_PRIO) += sch_prio.o +diff -urN linux-2.6.21.1.old/net/sched/sch_esfq.c linux-2.6.21.1.dev/net/sched/sch_esfq.c +--- linux-2.6.21.1.old/net/sched/sch_esfq.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/net/sched/sch_esfq.c 2007-05-26 20:43:12.578580024 +0200 +@@ -0,0 +1,704 @@ ++/* ++ * net/sched/sch_esfq.c Extended Stochastic Fairness Queueing discipline. ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ * ++ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> ++ * ++ * Changes: Alexander Atanasov, <alex@ssi.bg> ++ * Added dynamic depth,limit,divisor,hash_kind options. ++ * Added dst and src hashes. ++ * ++ * Alexander Clouter, <alex@digriz.org.uk> ++ * Ported ESFQ to Linux 2.6. ++ * ++ * Corey Hickey, <bugfood-c@fatooh.org> ++ * Maintenance of the Linux 2.6 port. ++ * Added fwmark hash (thanks to Robert Kurjata). ++ * Added direct hashing for src, dst, and fwmark. ++ * Added usage of jhash. ++ * ++ */ ++ ++#include <linux/module.h> ++#include <asm/uaccess.h> ++#include <asm/system.h> ++#include <linux/bitops.h> ++#include <linux/types.h> ++#include <linux/kernel.h> ++#include <linux/jiffies.h> ++#include <linux/string.h> ++#include <linux/mm.h> ++#include <linux/socket.h> ++#include <linux/sockios.h> ++#include <linux/in.h> ++#include <linux/errno.h> ++#include <linux/interrupt.h> ++#include <linux/if_ether.h> ++#include <linux/inet.h> ++#include <linux/netdevice.h> ++#include <linux/etherdevice.h> ++#include <linux/notifier.h> ++#include <linux/init.h> ++#include <net/ip.h> ++#include <linux/ipv6.h> ++#include <net/route.h> ++#include <linux/skbuff.h> ++#include <net/sock.h> ++#include <net/pkt_sched.h> ++#include <linux/jhash.h> ++ ++#ifdef CONFIG_NF_CONNTRACK_ENABLED ++#include <net/netfilter/nf_conntrack.h> ++#endif ++ ++/* Stochastic Fairness Queuing algorithm. ++ For more comments look at sch_sfq.c. ++ The difference is that you can change limit, depth, ++ hash table size and choose alternate hash types. ++ ++ classic: same as in sch_sfq.c ++ dst: destination IP address ++ src: source IP address ++ fwmark: netfilter mark value ++ dst_direct: ++ src_direct: ++ fwmark_direct: direct hashing of the above sources ++ ctorigdst: original destination IP address ++ ctorigsrc: original source IP address ++ ctrepldst: reply destination IP address ++ ctreplsrc: reply source IP ++ ++*/ ++ ++ ++/* This type should contain at least SFQ_DEPTH*2 values */ ++typedef unsigned int esfq_index; ++ ++struct esfq_head ++{ ++ esfq_index next; ++ esfq_index prev; ++}; ++ ++struct esfq_sched_data ++{ ++/* Parameters */ ++ int perturb_period; ++ unsigned quantum; /* Allotment per round: MUST BE >= MTU */ ++ int limit; ++ unsigned depth; ++ unsigned hash_divisor; ++ unsigned hash_kind; ++/* Variables */ ++ struct timer_list perturb_timer; ++ int perturbation; ++ esfq_index tail; /* Index of current slot in round */ ++ esfq_index max_depth; /* Maximal depth */ ++ ++ esfq_index *ht; /* Hash table */ ++ esfq_index *next; /* Active slots link */ ++ short *allot; /* Current allotment per slot */ ++ unsigned short *hash; /* Hash value indexed by slots */ ++ struct sk_buff_head *qs; /* Slot queue */ ++ struct esfq_head *dep; /* Linked list of slots, indexed by depth */ ++ unsigned dyn_min; /* For dynamic divisor adjustment; minimum value seen */ ++ unsigned dyn_max; /* maximum value seen */ ++ unsigned dyn_range; /* saved range */ ++}; ++ ++/* This contains the info we will hash. */ ++struct esfq_packet_info ++{ ++ u32 proto; /* protocol or port */ ++ u32 src; /* source from packet header */ ++ u32 dst; /* destination from packet header */ ++ u32 ctorigsrc; /* original source from conntrack */ ++ u32 ctorigdst; /* original destination from conntrack */ ++ u32 ctreplsrc; /* reply source from conntrack */ ++ u32 ctrepldst; /* reply destination from conntrack */ ++ u32 mark; /* netfilter mark (fwmark) */ ++}; ++ ++/* Hash input values directly into the "nearest" slot, taking into account the ++ * range of input values seen. This is most useful when the hash table is at ++ * least as large as the range of possible values. ++ * Note: this functionality was added before the change to using jhash, and may ++ * no longer be useful. */ ++static __inline__ unsigned esfq_hash_direct(struct esfq_sched_data *q, u32 h) ++{ ++ /* adjust minimum and maximum */ ++ if (h < q->dyn_min || h > q->dyn_max) { ++ q->dyn_min = h < q->dyn_min ? h : q->dyn_min; ++ q->dyn_max = h > q->dyn_max ? h : q->dyn_max; ++ ++ /* find new range */ ++ if ((q->dyn_range = q->dyn_max - q->dyn_min) >= q->hash_divisor) ++ printk(KERN_WARNING "ESFQ: (direct hash) Input range %u is larger than hash " ++ "table. See ESFQ README for details.\n", q->dyn_range); ++ } ++ ++ /* hash input values into slot numbers */ ++ if (q->dyn_min == q->dyn_max) ++ return 0; /* only one value seen; avoid division by 0 */ ++ else ++ return (h - q->dyn_min) * (q->hash_divisor - 1) / q->dyn_range; ++} ++ ++static __inline__ unsigned esfq_jhash_1word(struct esfq_sched_data *q,u32 a) ++{ ++ return jhash_1word(a, q->perturbation) & (q->hash_divisor-1); ++} ++ ++static __inline__ unsigned esfq_jhash_2words(struct esfq_sched_data *q, u32 a, u32 b) ++{ ++ return jhash_2words(a, b, q->perturbation) & (q->hash_divisor-1); ++} ++ ++static __inline__ unsigned esfq_jhash_3words(struct esfq_sched_data *q, u32 a, u32 b, u32 c) ++{ ++ return jhash_3words(a, b, c, q->perturbation) & (q->hash_divisor-1); ++} ++ ++ ++static unsigned esfq_hash(struct esfq_sched_data *q, struct sk_buff *skb) ++{ ++ struct esfq_packet_info info; ++#ifdef CONFIG_NF_CONNTRACK_ENABLED ++ enum ip_conntrack_info ctinfo; ++ struct nf_conn *ct = nf_ct_get(skb, &ctinfo); ++#endif ++ ++ switch (skb->protocol) { ++ case __constant_htons(ETH_P_IP): ++ { ++ struct iphdr *iph = ip_hdr(skb); ++ info.dst = iph->daddr; ++ info.src = iph->saddr; ++ if (!(iph->frag_off&htons(IP_MF|IP_OFFSET)) && ++ (iph->protocol == IPPROTO_TCP || ++ iph->protocol == IPPROTO_UDP || ++ iph->protocol == IPPROTO_SCTP || ++ iph->protocol == IPPROTO_DCCP || ++ iph->protocol == IPPROTO_ESP)) ++ info.proto = *(((u32*)iph) + iph->ihl); ++ else ++ info.proto = iph->protocol; ++ break; ++ } ++ case __constant_htons(ETH_P_IPV6): ++ { ++ struct ipv6hdr *iph = ipv6_hdr(skb); ++ /* Hash ipv6 addresses into a u32. This isn't ideal, ++ * but the code is simple. */ ++ info.dst = jhash2(iph->daddr.s6_addr32, 4, q->perturbation); ++ info.src = jhash2(iph->saddr.s6_addr32, 4, q->perturbation); ++ if (iph->nexthdr == IPPROTO_TCP || ++ iph->nexthdr == IPPROTO_UDP || ++ iph->nexthdr == IPPROTO_SCTP || ++ iph->nexthdr == IPPROTO_DCCP || ++ iph->nexthdr == IPPROTO_ESP) ++ info.proto = *(u32*)&iph[1]; ++ else ++ info.proto = iph->nexthdr; ++ break; ++ } ++ default: ++ info.dst = (u32)(unsigned long)skb->dst; ++ info.src = (u32)(unsigned long)skb->sk; ++ info.proto = skb->protocol; ++ } ++ ++ info.mark = skb->mark; ++ ++#ifdef CONFIG_NF_CONNTRACK_ENABLED ++ /* defaults if there is no conntrack info */ ++ info.ctorigsrc = info.src; ++ info.ctorigdst = info.dst; ++ info.ctreplsrc = info.dst; ++ info.ctrepldst = info.src; ++ /* collect conntrack info */ ++ if (ct && ct != &nf_conntrack_untracked) { ++ if (skb->protocol == __constant_htons(ETH_P_IP)) { ++ info.ctorigsrc = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip; ++ info.ctorigdst = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip; ++ info.ctreplsrc = ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip; ++ info.ctrepldst = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip; ++ } ++ else if (skb->protocol == __constant_htons(ETH_P_IPV6)) { ++ /* Again, hash ipv6 addresses into a single u32. */ ++ info.ctorigsrc = jhash2(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip6, 4, q->perturbation); ++ info.ctorigdst = jhash2(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip6, 4, q->perturbation); ++ info.ctreplsrc = jhash2(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip6, 4, q->perturbation); ++ info.ctrepldst = jhash2(ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip6, 4, q->perturbation); ++ } ++ ++ } ++#endif ++ ++ switch(q->hash_kind) ++ { ++ case TCA_SFQ_HASH_CLASSIC: ++ return esfq_jhash_3words(q, info.dst, info.src, info.proto); ++ case TCA_SFQ_HASH_DST: ++ return esfq_jhash_1word(q, info.dst); ++ case TCA_SFQ_HASH_DSTDIR: ++ return esfq_hash_direct(q, ntohl(info.dst)); ++ case TCA_SFQ_HASH_SRC: ++ return esfq_jhash_1word(q, info.src); ++ case TCA_SFQ_HASH_SRCDIR: ++ return esfq_hash_direct(q, ntohl(info.src)); ++ case TCA_SFQ_HASH_FWMARK: ++ return esfq_jhash_1word(q, info.mark); ++ case TCA_SFQ_HASH_FWMARKDIR: ++ return esfq_hash_direct(q, info.mark); ++#ifdef CONFIG_NF_CONNTRACK_ENABLED ++ case TCA_SFQ_HASH_CTORIGDST: ++ return esfq_jhash_1word(q, info.ctorigdst); ++ case TCA_SFQ_HASH_CTORIGSRC: ++ return esfq_jhash_1word(q, info.ctorigsrc); ++ case TCA_SFQ_HASH_CTREPLDST: ++ return esfq_jhash_1word(q, info.ctrepldst); ++ case TCA_SFQ_HASH_CTREPLSRC: ++ return esfq_jhash_1word(q, info.ctreplsrc); ++#endif ++ default: ++ if (net_ratelimit()) ++ printk(KERN_WARNING "ESFQ: Unknown hash method. Falling back to classic.\n"); ++ } ++ return esfq_jhash_3words(q, info.dst, info.src, info.proto); ++} ++ ++static inline void esfq_link(struct esfq_sched_data *q, esfq_index x) ++{ ++ esfq_index p, n; ++ int d = q->qs[x].qlen + q->depth; ++ ++ p = d; ++ n = q->dep[d].next; ++ q->dep[x].next = n; ++ q->dep[x].prev = p; ++ q->dep[p].next = q->dep[n].prev = x; ++} ++ ++static inline void esfq_dec(struct esfq_sched_data *q, esfq_index x) ++{ ++ esfq_index p, n; ++ ++ n = q->dep[x].next; ++ p = q->dep[x].prev; ++ q->dep[p].next = n; ++ q->dep[n].prev = p; ++ ++ if (n == p && q->max_depth == q->qs[x].qlen + 1) ++ q->max_depth--; ++ ++ esfq_link(q, x); ++} ++ ++static inline void esfq_inc(struct esfq_sched_data *q, esfq_index x) ++{ ++ esfq_index p, n; ++ int d; ++ ++ n = q->dep[x].next; ++ p = q->dep[x].prev; ++ q->dep[p].next = n; ++ q->dep[n].prev = p; ++ d = q->qs[x].qlen; ++ if (q->max_depth < d) ++ q->max_depth = d; ++ ++ esfq_link(q, x); ++} ++ ++static unsigned int esfq_drop(struct Qdisc *sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ esfq_index d = q->max_depth; ++ struct sk_buff *skb; ++ unsigned int len; ++ ++ /* Queue is full! Find the longest slot and ++ drop a packet from it */ ++ ++ if (d > 1) { ++ esfq_index x = q->dep[d+q->depth].next; ++ skb = q->qs[x].prev; ++ len = skb->len; ++ __skb_unlink(skb, &q->qs[x]); ++ kfree_skb(skb); ++ esfq_dec(q, x); ++ sch->q.qlen--; ++ sch->qstats.drops++; ++ sch->qstats.backlog -= len; ++ return len; ++ } ++ ++ if (d == 1) { ++ /* It is difficult to believe, but ALL THE SLOTS HAVE LENGTH 1. */ ++ d = q->next[q->tail]; ++ q->next[q->tail] = q->next[d]; ++ q->allot[q->next[d]] += q->quantum; ++ skb = q->qs[d].prev; ++ len = skb->len; ++ __skb_unlink(skb, &q->qs[d]); ++ kfree_skb(skb); ++ esfq_dec(q, d); ++ sch->q.qlen--; ++ q->ht[q->hash[d]] = q->depth; ++ sch->qstats.drops++; ++ sch->qstats.backlog -= len; ++ return len; ++ } ++ ++ return 0; ++} ++ ++static int ++esfq_enqueue(struct sk_buff *skb, struct Qdisc* sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ unsigned hash = esfq_hash(q, skb); ++ unsigned depth = q->depth; ++ esfq_index x; ++ ++ x = q->ht[hash]; ++ if (x == depth) { ++ q->ht[hash] = x = q->dep[depth].next; ++ q->hash[x] = hash; ++ } ++ sch->qstats.backlog += skb->len; ++ __skb_queue_tail(&q->qs[x], skb); ++ esfq_inc(q, x); ++ if (q->qs[x].qlen == 1) { /* The flow is new */ ++ if (q->tail == depth) { /* It is the first flow */ ++ q->tail = x; ++ q->next[x] = x; ++ q->allot[x] = q->quantum; ++ } else { ++ q->next[x] = q->next[q->tail]; ++ q->next[q->tail] = x; ++ q->tail = x; ++ } ++ } ++ if (++sch->q.qlen < q->limit-1) { ++ sch->bstats.bytes += skb->len; ++ sch->bstats.packets++; ++ return 0; ++ } ++ ++ esfq_drop(sch); ++ return NET_XMIT_CN; ++} ++ ++static int ++esfq_requeue(struct sk_buff *skb, struct Qdisc* sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ unsigned hash = esfq_hash(q, skb); ++ unsigned depth = q->depth; ++ esfq_index x; ++ ++ x = q->ht[hash]; ++ if (x == depth) { ++ q->ht[hash] = x = q->dep[depth].next; ++ q->hash[x] = hash; ++ } ++ sch->qstats.backlog += skb->len; ++ __skb_queue_head(&q->qs[x], skb); ++ esfq_inc(q, x); ++ if (q->qs[x].qlen == 1) { /* The flow is new */ ++ if (q->tail == depth) { /* It is the first flow */ ++ q->tail = x; ++ q->next[x] = x; ++ q->allot[x] = q->quantum; ++ } else { ++ q->next[x] = q->next[q->tail]; ++ q->next[q->tail] = x; ++ q->tail = x; ++ } ++ } ++ if (++sch->q.qlen < q->limit - 1) { ++ sch->qstats.requeues++; ++ return 0; ++ } ++ ++ sch->qstats.drops++; ++ esfq_drop(sch); ++ return NET_XMIT_CN; ++} ++ ++ ++ ++ ++static struct sk_buff * ++esfq_dequeue(struct Qdisc* sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ struct sk_buff *skb; ++ unsigned depth = q->depth; ++ esfq_index a, old_a; ++ ++ /* No active slots */ ++ if (q->tail == depth) ++ return NULL; ++ ++ a = old_a = q->next[q->tail]; ++ ++ /* Grab packet */ ++ skb = __skb_dequeue(&q->qs[a]); ++ esfq_dec(q, a); ++ sch->q.qlen--; ++ sch->qstats.backlog -= skb->len; ++ ++ /* Is the slot empty? */ ++ if (q->qs[a].qlen == 0) { ++ q->ht[q->hash[a]] = depth; ++ a = q->next[a]; ++ if (a == old_a) { ++ q->tail = depth; ++ return skb; ++ } ++ q->next[q->tail] = a; ++ q->allot[a] += q->quantum; ++ } else if ((q->allot[a] -= skb->len) <= 0) { ++ q->tail = a; ++ a = q->next[a]; ++ q->allot[a] += q->quantum; ++ } ++ ++ return skb; ++} ++ ++static void ++esfq_reset(struct Qdisc* sch) ++{ ++ struct sk_buff *skb; ++ ++ while ((skb = esfq_dequeue(sch)) != NULL) ++ kfree_skb(skb); ++} ++ ++static void esfq_perturbation(unsigned long arg) ++{ ++ struct Qdisc *sch = (struct Qdisc*)arg; ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ ++ q->perturbation = net_random()&0x1F; ++ ++ if (q->perturb_period) { ++ q->perturb_timer.expires = jiffies + q->perturb_period; ++ add_timer(&q->perturb_timer); ++ } ++} ++ ++static int esfq_change(struct Qdisc *sch, struct rtattr *opt) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ struct tc_esfq_qopt *ctl = RTA_DATA(opt); ++ int old_perturb = q->perturb_period; ++ ++ if (opt->rta_len < RTA_LENGTH(sizeof(*ctl))) ++ return -EINVAL; ++ ++ sch_tree_lock(sch); ++ q->quantum = ctl->quantum ? : psched_mtu(sch->dev); ++ q->perturb_period = ctl->perturb_period*HZ; ++// q->hash_divisor = ctl->divisor; ++// q->tail = q->limit = q->depth = ctl->flows; ++ ++ if (ctl->limit) ++ q->limit = min_t(u32, ctl->limit, q->depth); ++ ++ if (ctl->hash_kind) { ++ q->hash_kind = ctl->hash_kind; ++ if (q->hash_kind != TCA_SFQ_HASH_CLASSIC) ++ q->perturb_period = 0; ++ } ++ ++ // is sch_tree_lock enough to do this ? ++ while (sch->q.qlen >= q->limit-1) ++ esfq_drop(sch); ++ ++ if (old_perturb) ++ del_timer(&q->perturb_timer); ++ if (q->perturb_period) { ++ q->perturb_timer.expires = jiffies + q->perturb_period; ++ add_timer(&q->perturb_timer); ++ } else { ++ q->perturbation = 0; ++ } ++ sch_tree_unlock(sch); ++ return 0; ++} ++ ++static int esfq_init(struct Qdisc *sch, struct rtattr *opt) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ struct tc_esfq_qopt *ctl; ++ esfq_index p = ~0U/2; ++ int i; ++ ++ if (opt && opt->rta_len < RTA_LENGTH(sizeof(*ctl))) ++ return -EINVAL; ++ ++ init_timer(&q->perturb_timer); ++ q->perturb_timer.data = (unsigned long)sch; ++ q->perturb_timer.function = esfq_perturbation; ++ q->perturbation = 0; ++ q->hash_kind = TCA_SFQ_HASH_CLASSIC; ++ q->max_depth = 0; ++ q->dyn_min = ~0U; /* maximum value for this type */ ++ q->dyn_max = 0; /* dyn_min/dyn_max will be set properly upon first packet */ ++ if (opt == NULL) { ++ q->quantum = psched_mtu(sch->dev); ++ q->perturb_period = 0; ++ q->hash_divisor = 1024; ++ q->tail = q->limit = q->depth = 128; ++ ++ } else { ++ ctl = RTA_DATA(opt); ++ q->quantum = ctl->quantum ? : psched_mtu(sch->dev); ++ q->perturb_period = ctl->perturb_period*HZ; ++ q->hash_divisor = ctl->divisor ? : 1024; ++ q->tail = q->limit = q->depth = ctl->flows ? : 128; ++ ++ if ( q->depth > p - 1 ) ++ return -EINVAL; ++ ++ if (ctl->limit) ++ q->limit = min_t(u32, ctl->limit, q->depth); ++ ++ if (ctl->hash_kind) { ++ q->hash_kind = ctl->hash_kind; ++ } ++ ++ if (q->perturb_period) { ++ q->perturb_timer.expires = jiffies + q->perturb_period; ++ add_timer(&q->perturb_timer); ++ } ++ } ++ ++ q->ht = kmalloc(q->hash_divisor*sizeof(esfq_index), GFP_KERNEL); ++ if (!q->ht) ++ goto err_case; ++ ++ q->dep = kmalloc((1+q->depth*2)*sizeof(struct esfq_head), GFP_KERNEL); ++ if (!q->dep) ++ goto err_case; ++ q->next = kmalloc(q->depth*sizeof(esfq_index), GFP_KERNEL); ++ if (!q->next) ++ goto err_case; ++ ++ q->allot = kmalloc(q->depth*sizeof(short), GFP_KERNEL); ++ if (!q->allot) ++ goto err_case; ++ q->hash = kmalloc(q->depth*sizeof(unsigned short), GFP_KERNEL); ++ if (!q->hash) ++ goto err_case; ++ q->qs = kmalloc(q->depth*sizeof(struct sk_buff_head), GFP_KERNEL); ++ if (!q->qs) ++ goto err_case; ++ ++ for (i=0; i< q->hash_divisor; i++) ++ q->ht[i] = q->depth; ++ for (i=0; i<q->depth; i++) { ++ skb_queue_head_init(&q->qs[i]); ++ q->dep[i+q->depth].next = i+q->depth; ++ q->dep[i+q->depth].prev = i+q->depth; ++ } ++ ++ for (i=0; i<q->depth; i++) ++ esfq_link(q, i); ++ return 0; ++err_case: ++ del_timer(&q->perturb_timer); ++ if (q->ht) ++ kfree(q->ht); ++ if (q->dep) ++ kfree(q->dep); ++ if (q->next) ++ kfree(q->next); ++ if (q->allot) ++ kfree(q->allot); ++ if (q->hash) ++ kfree(q->hash); ++ if (q->qs) ++ kfree(q->qs); ++ return -ENOBUFS; ++} ++ ++static void esfq_destroy(struct Qdisc *sch) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ del_timer(&q->perturb_timer); ++ if(q->ht) ++ kfree(q->ht); ++ if(q->dep) ++ kfree(q->dep); ++ if(q->next) ++ kfree(q->next); ++ if(q->allot) ++ kfree(q->allot); ++ if(q->hash) ++ kfree(q->hash); ++ if(q->qs) ++ kfree(q->qs); ++} ++ ++static int esfq_dump(struct Qdisc *sch, struct sk_buff *skb) ++{ ++ struct esfq_sched_data *q = qdisc_priv(sch); ++ unsigned char *b = skb->tail; ++ struct tc_esfq_qopt opt; ++ ++ opt.quantum = q->quantum; ++ opt.perturb_period = q->perturb_period/HZ; ++ ++ opt.limit = q->limit; ++ opt.divisor = q->hash_divisor; ++ opt.flows = q->depth; ++ opt.hash_kind = q->hash_kind; ++ ++ RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt); ++ ++ return skb->len; ++ ++rtattr_failure: ++ skb_trim(skb, b - skb->data); ++ return -1; ++} ++ ++static struct Qdisc_ops esfq_qdisc_ops = ++{ ++ .next = NULL, ++ .cl_ops = NULL, ++ .id = "esfq", ++ .priv_size = sizeof(struct esfq_sched_data), ++ .enqueue = esfq_enqueue, ++ .dequeue = esfq_dequeue, ++ .requeue = esfq_requeue, ++ .drop = esfq_drop, ++ .init = esfq_init, ++ .reset = esfq_reset, ++ .destroy = esfq_destroy, ++ .change = NULL, /* esfq_change - needs more work */ ++ .dump = esfq_dump, ++ .owner = THIS_MODULE, ++}; ++ ++static int __init esfq_module_init(void) ++{ ++ return register_qdisc(&esfq_qdisc_ops); ++} ++static void __exit esfq_module_exit(void) ++{ ++ unregister_qdisc(&esfq_qdisc_ops); ++} ++module_init(esfq_module_init) ++module_exit(esfq_module_exit) ++MODULE_LICENSE("GPL"); diff --git a/target/linux/generic-2.6/patches-2.6.22/201-multiple_default_gateways.patch b/target/linux/generic-2.6/patches-2.6.22/201-multiple_default_gateways.patch new file mode 100644 index 0000000000..313b1102f8 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/201-multiple_default_gateways.patch @@ -0,0 +1,339 @@ +diff -urN linux-2.6.21.1.old/include/linux/rtnetlink.h linux-2.6.21.1.dev/include/linux/rtnetlink.h +--- linux-2.6.21.1.old/include/linux/rtnetlink.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/linux/rtnetlink.h 2007-05-26 20:46:11.883321560 +0200 +@@ -293,6 +293,8 @@ + #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ + #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ + #define RTNH_F_ONLINK 4 /* Gateway is forced on link */ ++#define RTNH_F_SUSPECT 8 /* We don't know the real state */ ++#define RTNH_F_BADSTATE (RTNH_F_DEAD | RTNH_F_SUSPECT) + + /* Macros to handle hexthops */ + +diff -urN linux-2.6.21.1.old/include/net/flow.h linux-2.6.21.1.dev/include/net/flow.h +--- linux-2.6.21.1.old/include/net/flow.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/net/flow.h 2007-05-26 20:46:11.922315632 +0200 +@@ -19,6 +19,8 @@ + struct { + __be32 daddr; + __be32 saddr; ++ __u32 lsrc; ++ __u32 gw; + __u8 tos; + __u8 scope; + } ip4_u; +@@ -43,6 +45,8 @@ + #define fl6_flowlabel nl_u.ip6_u.flowlabel + #define fl4_dst nl_u.ip4_u.daddr + #define fl4_src nl_u.ip4_u.saddr ++#define fl4_lsrc nl_u.ip4_u.lsrc ++#define fl4_gw nl_u.ip4_u.gw + #define fl4_tos nl_u.ip4_u.tos + #define fl4_scope nl_u.ip4_u.scope + +diff -urN linux-2.6.21.1.old/net/ipv4/route.c linux-2.6.21.1.dev/net/ipv4/route.c +--- linux-2.6.21.1.old/net/ipv4/route.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/net/ipv4/route.c 2007-05-26 20:46:11.967308792 +0200 +@@ -1208,6 +1208,7 @@ + + /* Gateway is different ... */ + rt->rt_gateway = new_gw; ++ if (rt->fl.fl4_gw) rt->fl.fl4_gw = new_gw; + + /* Redirect received -> path was valid */ + dst_confirm(&rth->u.dst); +@@ -1643,6 +1644,7 @@ + rth->fl.fl4_tos = tos; + rth->fl.mark = skb->mark; + rth->fl.fl4_src = saddr; ++ rth->fl.fl4_lsrc = 0; + rth->rt_src = saddr; + #ifdef CONFIG_NET_CLS_ROUTE + rth->u.dst.tclassid = itag; +@@ -1653,6 +1655,7 @@ + dev_hold(rth->u.dst.dev); + rth->idev = in_dev_get(rth->u.dst.dev); + rth->fl.oif = 0; ++ rth->fl.fl4_gw = 0; + rth->rt_gateway = daddr; + rth->rt_spec_dst= spec_dst; + rth->rt_type = RTN_MULTICAST; +@@ -1716,7 +1719,7 @@ + static inline int __mkroute_input(struct sk_buff *skb, + struct fib_result* res, + struct in_device *in_dev, +- __be32 daddr, __be32 saddr, u32 tos, ++ __be32 daddr, __be32 saddr, u32 tos, u32 lsrc, + struct rtable **result) + { + +@@ -1751,6 +1754,7 @@ + flags |= RTCF_DIRECTSRC; + + if (out_dev == in_dev && err && !(flags & (RTCF_NAT | RTCF_MASQ)) && ++ !lsrc && + (IN_DEV_SHARED_MEDIA(out_dev) || + inet_addr_onlink(out_dev, saddr, FIB_RES_GW(*res)))) + flags |= RTCF_DOREDIRECT; +@@ -1788,6 +1792,7 @@ + rth->fl.mark = skb->mark; + rth->fl.fl4_src = saddr; + rth->rt_src = saddr; ++ rth->fl.fl4_lsrc = lsrc; + rth->rt_gateway = daddr; + rth->rt_iif = + rth->fl.iif = in_dev->dev->ifindex; +@@ -1795,6 +1800,7 @@ + dev_hold(rth->u.dst.dev); + rth->idev = in_dev_get(rth->u.dst.dev); + rth->fl.oif = 0; ++ rth->fl.fl4_gw = 0; + rth->rt_spec_dst= spec_dst; + + rth->u.dst.input = ip_forward; +@@ -1816,19 +1822,21 @@ + struct fib_result* res, + const struct flowi *fl, + struct in_device *in_dev, +- __be32 daddr, __be32 saddr, u32 tos) ++ __be32 daddr, __be32 saddr, u32 tos, ++ u32 lsrc) + { + struct rtable* rth = NULL; + int err; + unsigned hash; + ++ fib_select_default(fl, res); + #ifdef CONFIG_IP_ROUTE_MULTIPATH +- if (res->fi && res->fi->fib_nhs > 1 && fl->oif == 0) ++ if (res->fi && res->fi->fib_nhs > 1) + fib_select_multipath(fl, res); + #endif + + /* create a routing cache entry */ +- err = __mkroute_input(skb, res, in_dev, daddr, saddr, tos, &rth); ++ err = __mkroute_input(skb, res, in_dev, daddr, saddr, tos, lsrc, &rth); + if (err) + return err; + +@@ -1841,7 +1849,8 @@ + struct fib_result* res, + const struct flowi *fl, + struct in_device *in_dev, +- __be32 daddr, __be32 saddr, u32 tos) ++ __be32 daddr, __be32 saddr, u32 tos, ++ u32 lsrc) + { + #ifdef CONFIG_IP_ROUTE_MULTIPATH_CACHED + struct rtable* rth = NULL, *rtres; +@@ -1857,7 +1866,7 @@ + /* distinguish between multipath and singlepath */ + if (hopcount < 2) + return ip_mkroute_input_def(skb, res, fl, in_dev, daddr, +- saddr, tos); ++ saddr, tos, 0); + + /* add all alternatives to the routing cache */ + for (hop = 0; hop < hopcount; hop++) { +@@ -1869,7 +1878,7 @@ + + /* create a routing cache entry */ + err = __mkroute_input(skb, res, in_dev, daddr, saddr, tos, +- &rth); ++ 0, &rth); + if (err) + return err; + +@@ -1889,7 +1898,7 @@ + skb->dst = &rtres->u.dst; + return err; + #else /* CONFIG_IP_ROUTE_MULTIPATH_CACHED */ +- return ip_mkroute_input_def(skb, res, fl, in_dev, daddr, saddr, tos); ++ return ip_mkroute_input_def(skb, res, fl, in_dev, daddr, saddr, tos, lsrc); + #endif /* CONFIG_IP_ROUTE_MULTIPATH_CACHED */ + } + +@@ -1905,18 +1914,18 @@ + */ + + static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr, +- u8 tos, struct net_device *dev) ++ u8 tos, struct net_device *dev, u32 lsrc) + { + struct fib_result res; + struct in_device *in_dev = in_dev_get(dev); + struct flowi fl = { .nl_u = { .ip4_u = + { .daddr = daddr, +- .saddr = saddr, ++ .saddr = lsrc ? : saddr, + .tos = tos, + .scope = RT_SCOPE_UNIVERSE, + } }, + .mark = skb->mark, +- .iif = dev->ifindex }; ++ .iif = lsrc? loopback_dev.ifindex : dev->ifindex }; + unsigned flags = 0; + u32 itag = 0; + struct rtable * rth; +@@ -1949,6 +1958,12 @@ + if (BADCLASS(daddr) || ZERONET(daddr) || LOOPBACK(daddr)) + goto martian_destination; + ++ if (lsrc) { ++ if (MULTICAST(lsrc) || BADCLASS(lsrc) || ++ ZERONET(lsrc) || LOOPBACK(lsrc)) ++ goto e_inval; ++ } ++ + /* + * Now we are ready to route packet. + */ +@@ -1958,6 +1973,10 @@ + goto no_route; + } + free_res = 1; ++ if (lsrc && res.type != RTN_UNICAST && res.type != RTN_NAT) ++ goto e_inval; ++ fl.iif = dev->ifindex; ++ fl.fl4_src = saddr; + + RT_CACHE_STAT_INC(in_slow_tot); + +@@ -1982,7 +2001,7 @@ + if (res.type != RTN_UNICAST) + goto martian_destination; + +- err = ip_mkroute_input(skb, &res, &fl, in_dev, daddr, saddr, tos); ++ err = ip_mkroute_input(skb, &res, &fl, in_dev, daddr, saddr, tos, lsrc); + if (err == -ENOBUFS) + goto e_nobufs; + if (err == -EINVAL) +@@ -1997,6 +2016,8 @@ + brd_input: + if (skb->protocol != htons(ETH_P_IP)) + goto e_inval; ++ if (lsrc) ++ goto e_inval; + + if (ZERONET(saddr)) + spec_dst = inet_select_addr(dev, 0, RT_SCOPE_LINK); +@@ -2037,6 +2058,7 @@ + rth->u.dst.dev = &loopback_dev; + dev_hold(rth->u.dst.dev); + rth->idev = in_dev_get(rth->u.dst.dev); ++ rth->fl.fl4_gw = 0; + rth->rt_gateway = daddr; + rth->rt_spec_dst= spec_dst; + rth->u.dst.input= ip_local_deliver; +@@ -2086,8 +2108,9 @@ + goto e_inval; + } + +-int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr, +- u8 tos, struct net_device *dev) ++static inline int ++ip_route_input_cached(struct sk_buff *skb, __be32 daddr, __be32 saddr, ++ u8 tos, struct net_device *dev, u32 lsrc) + { + struct rtable * rth; + unsigned hash; +@@ -2102,6 +2125,7 @@ + if (rth->fl.fl4_dst == daddr && + rth->fl.fl4_src == saddr && + rth->fl.iif == iif && ++ rth->fl.fl4_lsrc == lsrc && + rth->fl.oif == 0 && + rth->fl.mark == skb->mark && + rth->fl.fl4_tos == tos) { +@@ -2148,7 +2172,19 @@ + rcu_read_unlock(); + return -EINVAL; + } +- return ip_route_input_slow(skb, daddr, saddr, tos, dev); ++ return ip_route_input_slow(skb, daddr, saddr, tos, dev, lsrc); ++} ++ ++int ip_route_input(struct sk_buff *skb, u32 daddr, u32 saddr, ++ u8 tos, struct net_device *dev) ++{ ++ return ip_route_input_cached(skb, daddr, saddr, tos, dev, 0); ++} ++ ++int ip_route_input_lookup(struct sk_buff *skb, u32 daddr, u32 saddr, ++ u8 tos, struct net_device *dev, u32 lsrc) ++{ ++ return ip_route_input_cached(skb, daddr, saddr, tos, dev, lsrc); + } + + static inline int __mkroute_output(struct rtable **result, +@@ -2227,6 +2263,7 @@ + rth->fl.fl4_tos = tos; + rth->fl.fl4_src = oldflp->fl4_src; + rth->fl.oif = oldflp->oif; ++ rth->fl.fl4_gw = oldflp->fl4_gw; + rth->fl.mark = oldflp->mark; + rth->rt_dst = fl->fl4_dst; + rth->rt_src = fl->fl4_src; +@@ -2367,6 +2404,7 @@ + struct flowi fl = { .nl_u = { .ip4_u = + { .daddr = oldflp->fl4_dst, + .saddr = oldflp->fl4_src, ++ .gw = oldflp->fl4_gw, + .tos = tos & IPTOS_RT_MASK, + .scope = ((tos & RTO_ONLINK) ? + RT_SCOPE_LINK : +@@ -2470,6 +2508,7 @@ + dev_out = &loopback_dev; + dev_hold(dev_out); + fl.oif = loopback_dev.ifindex; ++ fl.fl4_gw = 0; + res.type = RTN_LOCAL; + flags |= RTCF_LOCAL; + goto make_route; +@@ -2477,7 +2516,7 @@ + + if (fib_lookup(&fl, &res)) { + res.fi = NULL; +- if (oldflp->oif) { ++ if (oldflp->oif && dev_out->flags & IFF_UP) { + /* Apparently, routing tables are wrong. Assume, + that the destination is on link. + +@@ -2517,6 +2556,7 @@ + dev_out = &loopback_dev; + dev_hold(dev_out); + fl.oif = dev_out->ifindex; ++ fl.fl4_gw = 0; + if (res.fi) + fib_info_put(res.fi); + res.fi = NULL; +@@ -2524,13 +2564,12 @@ + goto make_route; + } + ++ if (res.type == RTN_UNICAST) ++ fib_select_default(&fl, &res); + #ifdef CONFIG_IP_ROUTE_MULTIPATH +- if (res.fi->fib_nhs > 1 && fl.oif == 0) ++ if (res.fi->fib_nhs > 1) + fib_select_multipath(&fl, &res); +- else + #endif +- if (!res.prefixlen && res.type == RTN_UNICAST && !fl.oif) +- fib_select_default(&fl, &res); + + if (!fl.fl4_src) + fl.fl4_src = FIB_RES_PREFSRC(res); +@@ -2567,6 +2606,7 @@ + rth->fl.fl4_src == flp->fl4_src && + rth->fl.iif == 0 && + rth->fl.oif == flp->oif && ++ rth->fl.fl4_gw == flp->fl4_gw && + rth->fl.mark == flp->mark && + !((rth->fl.fl4_tos ^ flp->fl4_tos) & + (IPTOS_RT_MASK | RTO_ONLINK))) { +@@ -3271,3 +3311,4 @@ + EXPORT_SYMBOL(__ip_select_ident); + EXPORT_SYMBOL(ip_route_input); + EXPORT_SYMBOL(ip_route_output_key); ++EXPORT_SYMBOL(ip_route_input_lookup); diff --git a/target/linux/generic-2.6/patches-2.6.22/202-mips-freestanding.patch b/target/linux/generic-2.6/patches-2.6.22/202-mips-freestanding.patch new file mode 100644 index 0000000000..cfc7b01dcf --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/202-mips-freestanding.patch @@ -0,0 +1,13 @@ +diff -urN linux-2.6.21.1.old/arch/mips/Makefile linux-2.6.21.1.dev/arch/mips/Makefile +--- linux-2.6.21.1.old/arch/mips/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/arch/mips/Makefile 2007-05-26 20:49:09.358341256 +0200 +@@ -589,6 +589,9 @@ + core-$(CONFIG_TOSHIBA_RBTX4938) += arch/mips/tx4938/common/ + load-$(CONFIG_TOSHIBA_RBTX4938) += 0xffffffff80100000 + ++# temporary until string.h is fixed ++cflags-y += -ffreestanding ++ + cflags-y += -Iinclude/asm-mips/mach-generic + drivers-$(CONFIG_PCI) += arch/mips/pci/ + diff --git a/target/linux/generic-2.6/patches-2.6.22/204-jffs2_eofdetect.patch b/target/linux/generic-2.6/patches-2.6.22/204-jffs2_eofdetect.patch new file mode 100644 index 0000000000..b96e574e13 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/204-jffs2_eofdetect.patch @@ -0,0 +1,58 @@ +diff -urN linux-2.6.21.1.old/fs/jffs2/build.c linux-2.6.21.1.dev/fs/jffs2/build.c +--- linux-2.6.21.1.old/fs/jffs2/build.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/fs/jffs2/build.c 2007-05-26 20:52:04.425726968 +0200 +@@ -105,6 +105,17 @@ + dbg_fsbuild("scanned flash completely\n"); + jffs2_dbg_dump_block_lists_nolock(c); + ++ if (c->flags & (1 << 7)) { ++ printk("%s(): unlocking the mtd device... ", __func__); ++ if (c->mtd->unlock) ++ c->mtd->unlock(c->mtd, 0, c->mtd->size); ++ printk("done.\n"); ++ ++ printk("%s(): erasing all blocks after the end marker... ", __func__); ++ jffs2_erase_pending_blocks(c, -1); ++ printk("done.\n"); ++ } ++ + dbg_fsbuild("pass 1 starting\n"); + c->flags |= JFFS2_SB_FLAG_BUILDING; + /* Now scan the directory tree, increasing nlink according to every dirent found. */ +diff -urN linux-2.6.21.1.old/fs/jffs2/scan.c linux-2.6.21.1.dev/fs/jffs2/scan.c +--- linux-2.6.21.1.old/fs/jffs2/scan.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/fs/jffs2/scan.c 2007-05-26 20:52:04.491716936 +0200 +@@ -142,9 +142,12 @@ + + /* reset summary info for next eraseblock scan */ + jffs2_sum_reset_collected(s); +- +- ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset), +- buf_size, s); ++ ++ if (c->flags & (1 << 7)) ++ ret = BLK_STATE_ALLFF; ++ else ++ ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset), ++ buf_size, s); + + if (ret < 0) + goto out; +@@ -545,6 +548,17 @@ + return err; + } + ++ if ((buf[0] == 0xde) && ++ (buf[1] == 0xad) && ++ (buf[2] == 0xc0) && ++ (buf[3] == 0xde)) { ++ /* end of filesystem. erase everything after this point */ ++ printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset); ++ c->flags |= (1 << 7); ++ ++ return BLK_STATE_ALLFF; ++ } ++ + /* We temporarily use 'ofs' as a pointer into the buffer/jeb */ + ofs = 0; + diff --git a/target/linux/generic-2.6/patches-2.6.22/207-powerpc_asm_segment_h.patch b/target/linux/generic-2.6/patches-2.6.22/207-powerpc_asm_segment_h.patch new file mode 100644 index 0000000000..4640c9f4e4 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/207-powerpc_asm_segment_h.patch @@ -0,0 +1,10 @@ +diff -urN linux-2.6.21.1.old/include/asm-powerpc/segment.h linux-2.6.21.1.dev/include/asm-powerpc/segment.h +--- linux-2.6.21.1.old/include/asm-powerpc/segment.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/include/asm-powerpc/segment.h 2007-05-26 20:55:12.738099136 +0200 +@@ -0,0 +1,6 @@ ++#ifndef _ASM_SEGMENT_H ++#define _ASM_SEGMENT_H ++ ++/* Only here because we have some old header files that expect it.. */ ++ ++#endif /* _ASM_SEGMENT_H */ diff --git a/target/linux/generic-2.6/patches-2.6.22/208-rtl8110sb_fix.patch b/target/linux/generic-2.6/patches-2.6.22/208-rtl8110sb_fix.patch new file mode 100644 index 0000000000..d6705ddf41 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/208-rtl8110sb_fix.patch @@ -0,0 +1,25 @@ +diff -urN linux-2.6.21.1.old/drivers/net/r8169.c linux-2.6.21.1.dev/drivers/net/r8169.c +--- linux-2.6.21.1.old/drivers/net/r8169.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/drivers/net/r8169.c 2007-05-26 20:58:17.370030816 +0200 +@@ -494,7 +494,7 @@ + #endif + + static const u16 rtl8169_intr_mask = +- SYSErr | LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK; ++ LinkChg | RxOverflow | RxFIFOOver | TxErr | TxOK | RxErr | RxOK; + static const u16 rtl8169_napi_event = + RxOK | RxOverflow | RxFIFOOver | TxOK | TxErr; + static const unsigned int rtl8169_rx_config = +@@ -2640,10 +2640,12 @@ + if (!(status & rtl8169_intr_mask)) + break; + ++#if 0 + if (unlikely(status & SYSErr)) { + rtl8169_pcierr_interrupt(dev); + break; + } ++#endif + + if (status & LinkChg) + rtl8169_check_link_status(dev, tp, ioaddr); diff --git a/target/linux/generic-2.6/patches-2.6.22/209-mini_fo.patch b/target/linux/generic-2.6/patches-2.6.22/209-mini_fo.patch new file mode 100644 index 0000000000..f542fd45c2 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/209-mini_fo.patch @@ -0,0 +1,7807 @@ +diff -urN linux-2.6.21.1.old/fs/Kconfig linux-2.6.21.1.dev/fs/Kconfig +--- linux-2.6.21.1.old/fs/Kconfig 2007-05-26 19:03:45.497714200 +0200 ++++ linux-2.6.21.1.dev/fs/Kconfig 2007-05-26 21:01:26.154331240 +0200 +@@ -461,6 +461,9 @@ + This option will enlarge your kernel, but it allows debugging of + ocfs2 filesystem issues. + ++config MINI_FO ++ tristate "Mini fanout overlay filesystem" ++ + config MINIX_FS + tristate "Minix fs support" + help +diff -urN linux-2.6.21.1.old/fs/Makefile linux-2.6.21.1.dev/fs/Makefile +--- linux-2.6.21.1.old/fs/Makefile 2007-05-26 19:03:45.497714200 +0200 ++++ linux-2.6.21.1.dev/fs/Makefile 2007-05-26 21:01:26.160330328 +0200 +@@ -76,6 +76,7 @@ + obj-$(CONFIG_RAMFS) += ramfs/ + obj-$(CONFIG_HUGETLBFS) += hugetlbfs/ + obj-$(CONFIG_CODA_FS) += coda/ ++obj-$(CONFIG_MINI_FO) += mini_fo/ + obj-$(CONFIG_MINIX_FS) += minix/ + obj-$(CONFIG_FAT_FS) += fat/ + obj-$(CONFIG_MSDOS_FS) += msdos/ +diff -urN linux-2.6.21.1.old/fs/mini_fo/aux.c linux-2.6.21.1.dev/fs/mini_fo/aux.c +--- linux-2.6.21.1.old/fs/mini_fo/aux.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/aux.c 2007-05-26 21:01:26.160330328 +0200 +@@ -0,0 +1,580 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif ++ ++#include "fist.h" ++#include "mini_fo.h" ++ ++/* check if file exists in storage */ ++int exists_in_storage(dentry_t *dentry) ++{ ++ check_mini_fo_dentry(dentry); ++ if(dtost(dentry) == MODIFIED || dtost(dentry) == CREATED || dtost(dentry) == DEL_REWRITTEN) ++ return 1; ++ return 0; ++} ++ ++/* check if dentry is in an existing state */ ++int is_mini_fo_existant(dentry_t *dentry) ++{ ++ check_mini_fo_dentry(dentry); ++ ++ if(dtost(dentry) == DELETED || dtost(dentry) == NON_EXISTANT) ++ return 0; ++ else ++ return 1; ++} ++ ++/* ++ * This function will create a negative storage dentry for ++ * dentry, what is required for many create like options. ++ * It will create the storage structure if necessary. ++ */ ++int get_neg_sto_dentry(dentry_t *dentry) ++{ ++ int err = 0; ++ unsigned int len; ++ const unsigned char *name; ++ ++ if(!dentry || ++ !dtopd(dentry) || ++ !(dtost(dentry) == UNMODIFIED || ++ dtost(dentry) == NON_EXISTANT || ++ dtost(dentry) == DELETED)) { ++ printk(KERN_CRIT "mini_fo: get_neg_sto_dentry: invalid dentry passed.\n"); ++ err = -1; ++ goto out; ++ } ++ /* Have we got a neg. dentry already? */ ++ if(dtohd2(dentry)) { ++ err = 0; ++ goto out; ++ } ++ if(dtost(dentry->d_parent) == UNMODIFIED) { ++ /* build sto struct */ ++ err = build_sto_structure(dentry->d_parent->d_parent, dentry->d_parent); ++ if(err || ++ dtost(dentry->d_parent) != MODIFIED) { ++ printk(KERN_CRIT "mini_fo: get_neg_sto_dentry: ERROR building sto structure.\n"); ++ err = -1; ++ goto out; ++ } ++ } ++ ++ len = dentry->d_name.len; ++ name = dentry->d_name.name; ++ ++ dtohd2(dentry) = ++ lookup_one_len(name, dtohd2(dentry->d_parent), len); ++ ++ out: ++ return err; ++} ++ ++int check_mini_fo_dentry(dentry_t *dentry) ++{ ++ ASSERT(dentry != NULL); ++ ASSERT(dtopd(dentry) != NULL); ++ ASSERT((dtohd(dentry) != NULL) || (dtohd2(dentry) != NULL)); ++ ++/* if(dtost(dentry) == MODIFIED) { */ ++/* ASSERT(dentry->d_inode != NULL); */ ++/* ASSERT(dtohd(dentry) != NULL); */ ++/* ASSERT(dtohd(dentry)->d_inode != NULL); */ ++/* ASSERT(dtohd2(dentry) != NULL); */ ++/* ASSERT(dtohd2(dentry)->d_inode != NULL); */ ++/* } */ ++/* else if(dtost(dentry) == UNMODIFIED) { */ ++/* ASSERT(dentry->d_inode != NULL); */ ++/* ASSERT( */ ++/* } */ ++ return 0; ++} ++ ++int check_mini_fo_file(file_t *file) ++{ ++ ASSERT(file != NULL); ++ ASSERT(ftopd(file) != NULL); ++ ASSERT(file->f_dentry != NULL); ++ ++ /* violent checking, check depending of state and type ++ * if(S_ISDIR(file->f_dentry->d_inode->i_mode)) {} ++ */ ++ ASSERT((ftohf(file) != NULL) || (ftohf2(file) != NULL)); ++ return 0; ++} ++ ++int check_mini_fo_inode(inode_t *inode) ++{ ++ ASSERT(inode != NULL); ++ ASSERT(itopd(inode) != NULL); ++ ASSERT((itohi(inode) != NULL) || (itohi2(inode) != NULL)); ++ return 0; ++} ++ ++/* ++ * will walk a base path as provided by get_mini_fo_bpath and return ++ * the (hopefully ;-) ) positive dentry of the renamed base dir. ++ * ++ * This does some work of path_init. ++ */ ++dentry_t *bpath_walk(super_block_t *sb, char *bpath) ++{ ++ int err; ++ struct nameidata nd; ++ ++ /* be paranoid */ ++ if(!bpath || bpath[0] != '/') { ++ printk(KERN_CRIT "mini_fo: bpath_walk: Invalid string.\n"); ++ return NULL; ++ } ++ if(!sb || !stopd(sb)) { ++ printk(KERN_CRIT "mini_fo: bpath_walk: Invalid sb.\n"); ++ return NULL; ++ } ++ ++ /* setup nd as path_init does */ ++ nd.last_type = LAST_ROOT; /* if there are only slashes... */ ++ nd.flags = LOOKUP_FOLLOW; ++ /* fix this: how do I reach this lock? ++ * read_lock(¤t->fs->lock); */ ++ nd.mnt = mntget(stopd(sb)->hidden_mnt); ++ nd.dentry = dget(stopd(sb)->base_dir_dentry); ++ /* read_unlock(¤t->fs->lock); */ ++ ++ err = path_walk(bpath+1, &nd); ++ ++ /* validate */ ++ if (err || !nd.dentry || !nd.dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: bpath_walk: path_walk failed.\n"); ++ return NULL; ++ } ++ return nd.dentry; ++} ++ ++ ++/* returns the full path of the basefile incl. its name */ ++int get_mini_fo_bpath(dentry_t *dentry, char **bpath, int *bpath_len) ++{ ++ char *buf_walker; ++ int len = 0; ++ dentry_t *sky_walker; ++ ++ if(!dentry || !dtohd(dentry)) { ++ printk(KERN_CRIT "mini_fo: get_mini_fo_bpath: invalid dentry passed.\n"); ++ return -1; ++ } ++ sky_walker = dtohd(dentry); ++ ++ do { ++ len += sky_walker->d_name.len + 1 ; /* 1 for '/' */ ++ sky_walker = sky_walker->d_parent; ++ } while(sky_walker != stopd(dentry->d_inode->i_sb)->base_dir_dentry); ++ ++ /* 1 to oil the loop */ ++ *bpath = (char*) kmalloc(len + 1, GFP_KERNEL); ++ if(!*bpath) { ++ printk(KERN_CRIT "mini_fo: get_mini_fo_bpath: out of mem.\n"); ++ return -1; ++ } ++ buf_walker = *bpath+len; /* put it on last char */ ++ *buf_walker = '\n'; ++ sky_walker = dtohd(dentry); ++ ++ do { ++ buf_walker -= sky_walker->d_name.len; ++ strncpy(buf_walker, ++ sky_walker->d_name.name, ++ sky_walker->d_name.len); ++ *(--buf_walker) = '/'; ++ sky_walker = sky_walker->d_parent; ++ } while(sky_walker != stopd(dentry->d_inode->i_sb)->base_dir_dentry); ++ ++ /* bpath_len doesn't count newline! */ ++ *bpath_len = len; ++ return 0; ++} ++ ++int mini_fo_cp_cont(dentry_t *tgt_dentry, struct vfsmount *tgt_mnt, ++ dentry_t *src_dentry, struct vfsmount *src_mnt) ++{ ++ void *buf; ++ mm_segment_t old_fs; ++ file_t *tgt_file; ++ file_t *src_file; ++ int bytes, len, tmp, err; ++ err = 0; ++ ++ if(!(tgt_dentry->d_inode && src_dentry->d_inode)) { ++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR, neg. dentry passed.\n"); ++ err = -EINVAL; ++ goto out; ++ } ++ ++ dget(tgt_dentry); ++ dget(src_dentry); ++ mntget(tgt_mnt); ++ mntget(src_mnt); ++ ++ /* open file write only */ ++ tgt_file = dentry_open(tgt_dentry, tgt_mnt, 0x1); ++ if(!tgt_file || IS_ERR(tgt_file)) { ++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR opening target file.\n"); ++ err = PTR_ERR(tgt_file); ++ goto out_err; ++ } ++ ++ /* open file read only */ ++ src_file = dentry_open(src_dentry, src_mnt, 0x0); ++ if(!src_file || IS_ERR(src_file)) { ++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR opening source file.\n"); ++ err = PTR_ERR(src_file); ++ ++ /* close target file */ ++ fput(tgt_file); ++ goto out_err; ++ } ++ ++ /* check if the filesystem(s) support read respective write */ ++ if(!src_file->f_op->read || !tgt_file->f_op->write) { ++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR, no fs read or write support.\n"); ++ err = -EPERM; ++ goto out_close; ++ } ++ ++ /* allocate a page for transfering the data */ ++ buf = (void *) __get_free_page(GFP_KERNEL); ++ if(!buf) { ++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR, out of kernel mem.\n"); ++ goto out_err; ++ } ++ ++ tgt_file->f_pos = 0; ++ src_file->f_pos = 0; ++ ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ ++ /* Doing this I assume that a read operation will return a full ++ * buffer while there is still data to read, and a less than ++ * full buffer when all data has been read. ++ */ ++ bytes = len = PAGE_SIZE; ++ while(bytes == len) { ++ bytes = src_file->f_op->read(src_file, buf, len, ++ &src_file->f_pos); ++ tmp = tgt_file->f_op->write(tgt_file, buf, bytes, ++ &tgt_file->f_pos); ++ if(tmp != bytes) { ++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR writing.\n"); ++ goto out_close_unset; ++ } ++ } ++ ++ free_page((unsigned long) buf); ++ set_fs(old_fs); ++ fput(tgt_file); ++ fput(src_file); ++ goto out; ++ ++ out_close_unset: ++ free_page((unsigned long) buf); ++ set_fs(old_fs); ++ ++ out_close: ++ fput(tgt_file); ++ fput(src_file); ++ ++ out_err: ++ dput(tgt_dentry); ++ dput(src_dentry); ++ ++ /* mk: not sure if this need to be done */ ++ mntput(tgt_mnt); ++ mntput(src_mnt); ++ ++ out: ++ return err; ++} ++ ++/* mk: ++ * ndl (no-duplicate list) stuff ++ * This is used in mini_fo_readdir, to save the storage directory contents ++ * and later when reading base, match them against the list in order ++ * to avoid duplicates. ++ */ ++ ++/* add a file specified by name and len to the ndl ++ * Return values: 0 on success, <0 on failure. ++ */ ++int ndl_add_entry(struct readdir_data *rd, const char *name, int len) ++{ ++ struct ndl_entry *tmp_entry; ++ ++ tmp_entry = (struct ndl_entry *) ++ kmalloc(sizeof(struct ndl_entry), GFP_KERNEL); ++ if(!tmp_entry) { ++ printk(KERN_CRIT "mini_fo: ndl_add_entry: out of mem.\n"); ++ return -ENOMEM; ++ } ++ tmp_entry->name = (char*) kmalloc(len, GFP_KERNEL); ++ if(!tmp_entry->name) { ++ printk(KERN_CRIT "mini_fo: ndl_add_entry: out of mem.\n"); ++ return -ENOMEM; ++ } ++ strncpy(tmp_entry->name, name, len); ++ tmp_entry->len = len; ++ ++ list_add(&tmp_entry->list, &rd->ndl_list); ++ rd->ndl_size++; ++ return 0; ++} ++ ++/* delete all list entries and free memory */ ++void ndl_put_list(struct readdir_data *rd) ++{ ++ struct list_head *tmp; ++ struct ndl_entry *tmp_entry; ++ ++ if(rd->ndl_size <= 0) ++ return; ++ while(!list_empty(&rd->ndl_list)) { ++ tmp = rd->ndl_list.next; ++ list_del(tmp); ++ tmp_entry = list_entry(tmp, struct ndl_entry, list); ++ kfree(tmp_entry->name); ++ kfree(tmp_entry); ++ } ++ rd->ndl_size = 0; ++} ++ ++/* Check if a file specified by name and len is in the ndl ++ * Return value: 0 if not in list, 1 if file is found in ndl. ++ */ ++int ndl_check_entry(struct readdir_data *rd, const char *name, int len) ++{ ++ struct list_head *tmp; ++ struct ndl_entry *tmp_entry; ++ ++ if(rd->ndl_size <= 0) ++ return 0; ++ ++ list_for_each(tmp, &rd->ndl_list) { ++ tmp_entry = list_entry(tmp, struct ndl_entry, list); ++ if(tmp_entry->len != len) ++ continue; ++ if(!strncmp(tmp_entry->name, name, len)) ++ return 1; ++ } ++ return 0; ++} ++ ++/* mk: ++ * Recursive function to create corresponding directorys in the storage fs. ++ * The function will build the storage directorys up to dentry. ++ */ ++int build_sto_structure(dentry_t *dir, dentry_t *dentry) ++{ ++ int err; ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++ ++ if(dentry->d_parent != dir) { ++ printk(KERN_CRIT "mini_fo: build_sto_structure: invalid parameter or meta data corruption [1].\n"); ++ return 1; ++ } ++ ++ if(dtost(dir) != MODIFIED) { ++ err = build_sto_structure(dir->d_parent, dentry->d_parent); ++ if(err) ++ return err; ++ } ++ ++ /* ok, coming back again. */ ++ check_mini_fo_dentry(dentry); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ if(!hidden_sto_dentry) { ++ /* ++ * This is the case after creating the first ++ * hidden_sto_dentry. ++ * After one negative storage_dentry, all pointers to ++ * hidden_storage dentries are set to NULL. We need to ++ * create the negative dentry before we create the storage ++ * file. ++ */ ++ unsigned int len; ++ const unsigned char *name; ++ len = dtohd(dentry)->d_name.len; ++ name = dtohd(dentry)->d_name.name; ++ hidden_sto_dentry = lookup_one_len(name, dtohd2(dir), len); ++ dtohd2(dentry) = hidden_sto_dentry; ++ } ++ ++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ /* lets be safe */ ++ if(dtohd2(dir) != hidden_sto_dir_dentry) { ++ printk(KERN_CRIT "mini_fo: build_sto_structure: invalid parameter or meta data corruption [2].\n"); ++ return 1; ++ } ++ ++ /* check for errors in lock_parent */ ++ err = PTR_ERR(hidden_sto_dir_dentry); ++ if(IS_ERR(hidden_sto_dir_dentry)) { ++ printk(KERN_CRIT "mini_fo: build_sto_structure: lock_parent failed.\n"); ++ return err; ++ } ++ ++ err = vfs_mkdir(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ dir->d_inode->i_mode); ++ ++ if(err) { ++ printk(KERN_CRIT "mini_fo: build_sto_structure: failed to create storage dir [1].\n"); ++ /* was: unlock_dir(dir); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&dir->d_inode->i_mutex); ++#else ++ up(&dir->d_inode->i_sem); ++#endif ++ dput(dir); ++ return err; ++ } ++ ++ /* everything ok! */ ++ if(!dtohd2(dentry)->d_inode) { ++ printk(KERN_CRIT "mini_fo: build_sto_structure: failed to create storage dir [2].\n"); ++ /* was: unlock_dir(dir); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&dir->d_inode->i_mutex); ++#else ++ up(&dir->d_inode->i_sem); ++#endif ++ dput(dir); ++ return 1; ++ } ++ ++ /* interpose the new inode and set new state */ ++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode); ++ dtopd(dentry)->state = MODIFIED; ++ ++ /* initalize the wol list */ ++ itopd(dentry->d_inode)->deleted_list_size = -1; ++ itopd(dentry->d_inode)->renamed_list_size = -1; ++ meta_build_lists(dentry); ++ ++ fist_copy_attr_all(dentry->d_inode, itohi2(dentry->d_inode)); ++ fist_copy_attr_timesizes(dir->d_inode, ++ hidden_sto_dir_dentry->d_inode); ++ dir->d_inode->i_nlink++; ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ return 0; ++} ++ ++ ++#if 0 /* unused */ ++ ++/* ++ * Read "len" bytes from "filename" into "buf". ++ * "buf" is in kernel space. ++ */ ++int ++mini_fo_read_file(const char *filename, void *buf, int len) ++{ ++ file_t *filp; ++ mm_segment_t oldfs; ++ int bytes; ++ /* Chroot? Maybe NULL isn't right here */ ++ filp = filp_open(filename, O_RDONLY, 0); ++ if (!filp || IS_ERR(filp)) { ++ printk("mini_fo_read_file err %d\n", (int) PTR_ERR(filp)); ++ return -1; /* or do something else */ ++ } ++ ++ if (!filp->f_op->read) ++ return -2; /* file(system) doesn't allow reads */ ++ ++ /* now read len bytes from offset 0 */ ++ filp->f_pos = 0; /* start offset */ ++ oldfs = get_fs(); ++ set_fs(KERNEL_DS); ++ bytes = filp->f_op->read(filp, buf, len, &filp->f_pos); ++ set_fs(oldfs); ++ ++ /* close the file */ ++ fput(filp); ++ ++ return bytes; ++} ++ ++ ++ ++/* ++ * Write "len" bytes from "buf" to "filename" ++ * "buf" is in kernel space. ++ */ ++int ++mini_fo_write_file(const char *filename, void *buf, int len) ++{ ++ file_t *filp; ++ mm_segment_t oldfs; ++ int bytes; ++ /* Chroot? Maybe NULL isn't right here */ ++ filp = filp_open(filename, O_RDWR|O_CREAT, 0640); ++ if (!filp || IS_ERR(filp)) { ++ printk("mini_fo_write_file err %d\n", (int) PTR_ERR(filp)); ++ return -1; /* or do something else */ ++ } ++ ++ if (!filp->f_op->write) ++ return -2; /* file(system) doesn't allow writes */ ++ ++ /* now write len bytes from offset 0 */ ++ filp->f_pos = 0; /* start offset */ ++ oldfs = get_fs(); ++ set_fs(KERNEL_DS); ++ bytes = filp->f_op->write(filp, buf, len, &filp->f_pos); ++ set_fs(oldfs); ++ ++ /* close the file */ ++ fput(filp); ++ ++ return bytes; ++} ++ ++#endif /* unused */ ++ +diff -urN linux-2.6.21.1.old/fs/mini_fo/ChangeLog linux-2.6.21.1.dev/fs/mini_fo/ChangeLog +--- linux-2.6.21.1.old/fs/mini_fo/ChangeLog 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/ChangeLog 2007-05-26 21:01:26.161330176 +0200 +@@ -0,0 +1,281 @@ ++2006-01-24 Markus Klotzbuecher <mk@mary.denx.de> ++ ++ * Add tons of ugly ifdefs to Ed L. Cashin's mutex patch to ++ retain backwards compatibility. ++ ++2006-01-24 Ed L. Cashin <ecashin@coraid.com> ++ ++ * Support for the new mutex infrastructure ++ (7892f2f48d165a34b0b8130c8a195dfd807b8cb6) ++ ++2005-10-15 Markus Klotzbuecher <mk@localhost.localdomain> ++ ++ * Bugfix for a serious memory leak in mini_fo_follow_link. ++ ++2005-09-21 Markus Klotzbuecher <mk@mary> ++ ++ * new release 0.6.1 ++ ++ * fix of a compiler warning due to changes in 2.6.13 ++ ++2005-09-21 Klaus Wenninger <klaus.wenninger@siemens.com> ++ ++ * file.c: readdir: fix for a bug that caused directory entries ++ to show up twice when using storage filesystems such as ++ minixfs or pramfs. ++ ++2005-06-30 Eric Lammerts <eric@lammerts.org> ++ ++ * fix for an oops when overwriting a binary thats beeing ++ executed. ++ ++2005-06-09 <mk@mary> ++ ++ * Renamed overlay to mini_fo-overlay. ++ ++ * Added mini_fo-merge script to allow merging of storage and base ++ after making modifications. ++ ++2005-05-22 root <mk@mary> ++ ++ * Added overlay script that allows to easily mount mini_fo ontop ++ of a given base directory ++ ++2005-05-10 <mk@mary> ++ ++ * inode.c: xattr functions return -EOPNOSUPP instead of ++ -ENOSUPP, what confuses "ls -l" ++ ++ * Changed license from LGPL to GPL. ++ ++2005-05-08 root <mk@mary> ++ ++ * Makefile: clean it up and added make install and make ++ uninstall. ++ ++2005-05-06 <mk@mary> ++ ++ * merged devel branch back to main. [v0-6-0-pre3] ++ ++ * removed unused files print.c and fist_ioctl. [devel-0-0-18] ++ ++ * ioctl: removed fist_ioctl stuff, that is not needed for ++ now. ++ ++2005-05-03 <mk@mary> ++ ++ * file.c: simplified mini_fo_open and mini_fo_setattr using ++ new state changing functions. [devel-0-0-17] ++ ++ * inode.c: Fixed getattr state bug (see below) in 2.4 function ++ mini_fo_inode revalidate. ++ ++ * inode.c: found an other bug in mini_fo_getattr. States are not ++ reliable in this function, as a file can be opened, unlinked and ++ the getattr function called. This results in a deleted dentry ++ with an inode. Fix is to ignore states and simply use the inode ++ available. ++ ++2005-04-29 <mk@mary> ++ ++ * file.c: Bugfix and cleanup in fasync and fsync. [devel-0-0-16] ++ ++ * file.c: do not use mini_fo_lock so the generic version is ++ used (I guess). ++ ++ * inode.c: getattr, never call getattr on lower files, as this ++ will cause the inum to change. ++ ++ * inode.c: rename_reg_file renamed to rename_nondir, as it ++ doesn't matter as long it't not a dir. Removed all ++ rename_dev_file etc. ++ ++ * tagged as devel-0-0-15 ++ ++ * inode.c: added support for chosing support for extended ++ attrs at compile time by XATTR define in mini_fo.h . ++ ++ * inode.c: fixed mini_fo_getattr to use mini_fo inode and not ++ lower again, what avoids inode number changes that confused ++ rm again. This is the proper solution. ++ ++2005-04-24 <mk@mary> ++ ++ * all files: updated Copyright notive to 2005. [devel-0-0-14] ++ ++ * inode.c: fixed mini_fo_getattr to not change the inode ++ number, even if lower files change. ++ ++ * super.c: fixed a bug that caused deleted base file to show ++ up suddenly after some time, or after creating a special ++ file. The problem was that after some time or after special ++ file creating sync_sb_inodes is called by the vfs, that ++ called our mini_fo_put_inode. There was (wrongly) called ++ __meta_put_lists, that nuked the lists, although the inode ++ was going to continue its life. Moving __meta_put_lists to ++ mini_fo_clear_inode, where an inode is really destroyed, ++ solved the problem. ++ ++ ++2005-04-23 <mk@mary> ++ ++ * state.c, aux.c: more cleaning up and ++ simplifications. [devel-0-0-13] ++ ++ * inode.c: implemented mini_fo_getattr, that was required for ++ 2.6 because inode_revalidate has been remove there, and the ++ old "du" bug returned. ++ ++ ++2005-04-20 <mk@mary> ++ ++ * aux.c: get_neg_sto_dentry(): allow to be called for dentries ++ in state UNMODIFIED, NON_EXISTANT _and_ DELETED. ++ ++2005-04-19 <mk@mary> ++ ++ * Fixed a bug under 2.6 that caused files deleted via mini_fo ++ not to be deleted properly and therefore the fs filled up ++ untill no memory was left. [devel-0-0-12] ++ ++ * Added basic hard link support. This means that creating ++ hardlinks will work, but existing ones will be treated as ++ individual files. [devel-0-0-11] ++ ++2005-04-17 <mk@mary> ++ ++ * Bugfixes ++ ++2005-04-13 root <mk@mary> ++ ++ * Added file state.c for the state transition ++ functions. Doesn't work very well yet, though... ++ ++2005-04-12 <mk@mary> ++ ++ * Porting to 2.6 started, which is easier than expected, also ++ due to Olivier previous work. ++ ++2005-04-08 <mk@mary> ++ ++ * Fixed the bug that caused du to return invalid sizes of ++ directory trees. The problem was that ++ mini_fo_inode_revalidate didn't always copy the attributes ++ from the base inode properly. ++ ++2005-04-01 Markus Klotzbuecher <mk@chasey> ++ ++ * Merged devel branch back to main trunk and updated the ++ RELEASE notes. This will be 0-6-0-pre1. ++ ++2005-03-31 Markus Klotzbuecher <mk@chasey> ++ ++ * Fixed some bugs in rename_reg_file, that only showed up in ++ the kernel compile test. Kernel compiles cleanly ontop of ++ mini_fo, now also make mrproper etc. work. Seems pretty stable. ++ ++2005-03-28 Markus Klotzbuecher <mk@chasey> ++ ++ * Many, many directory renaming bugfixes and a lot of other ++ cleanup. Dir renaming seems to work relatively stable. ++ ++2005-03-22 Markus Klotzbuecher <mk@chasey> ++ ++ * Finished implementing lightweight directory renaming. Some ++ basic testing indicates it works fine. ++ Next is to implement testcases for the testsuite and confirm ++ everything is really working ok. ++ ++2005-03-18 Markus Klotzbuecher <mk@chasey> ++ ++ * Finished implementing meta.c stuff required for directory ++ renaming. ++ ++2005-03-17 Markus Klotzbuecher <mk@chasey> ++ ++ * Fixed all compile warnings + an extremly old bug that ++ somehow crept in while reworking the wol stuff to the META ++ system. Turning on -Werror again... :-) ++ ++ * Fixed some bugs in the new rename_reg_file function. ++ ++ * Rewrote mini_fo rename and split it into several ++ subfunctions, that handle the different types ++ seperately. Rewrote the regular file function aswell, as it ++ was implemented somewhat inefficient. ++ ++2005-03-16 Markus Klotzbuecher <mk@chasey> ++ ++ * Implemented new META subsystem, removed old WOL stuff in favor ++ if it. ++ ++ * After some basic testing everything seems ok... ++ ++2005-03-11 Markus Klotzbuecher <mk@chasey> ++ ++ * Renaming a non regular file caused trouble because I always ++ tried to copy the contents. Now I only do this for regular ++ files. mini_fo_rename still isn't implemented properly, renaming ++ of device files, symlinks etc. results in a empty regular file ++ instead of the proper type. ++ ++ * Directory renaming suddenly works! What a surprise! I guess ++ this is because renaming is implemented as making a copy and ++ removing the original. Still this might not work ++ everywhere... ++ ++2005-03-09 Markus Klotzbuecher <mk@chasey> ++ ++ * Bugfix, when a mini_fo directory that exists in storage ++ (state: MODIFIED, CREATED and DEL_REWRITTEN) is deleted, a ++ possibly existing WOL file contained in it needs to be ++ deleted too. ++ ++ * Starting cleanup: defined state names in order to get rid of ++ the state numbers. ++ ++2005-03-08 Markus Klotzbuecher <mk@chasey> ++ ++ * Makefile fix, fist_ioctl was built against wrong sources if ARCH=um ++ ++ * Fixed a bug in dentry.c, mini_fo_d_hash. In state 4 = ++ DEL_REWRITTEN the hash was calculated from the base dentry, ++ which was wrong and and caused assertions in ++ __mini_fo_hidden_dentry to fail. ++ ++2005-02-21 <mk@mary> ++ ++ * Implemented directory deleting (inode.c) ++ ++ * main.c: made mini_fo_parse_options a little more robust. ++ ++2004-12-22 <mk@mary> ++ ++ * Makefile cleanup and uml stuff, removed unneccessary files ++ ++ * Created a new and hopefully more informative README ++ ++ * CHANGELOG: created a new CHANGELOG and added old entries reversely ++ ++ ++2004-10-24 Gleb Natapov <gleb@nbase.co.il> ++ ++ * Fix: owner and group where not correctly copied from base to ++ storage. ++ ++ ++2004-10-05 Gleb Natapov <gleb@nbase.co.il> ++ ++ * Implementation of fsync, fasync and lock mini_fo functions. ++ ++ ++2004-09-29 Bob Lee <bob@pantasys.com> ++ ++ * Fix of a serious pointer bug ++ ++ ++2004-09-28 Gleb Natapov <gleb@nbase.co.il> ++ ++ * Implementation of mini_fo_mknod and mini_fo_rename, support ++ for device files. ++ +diff -urN linux-2.6.21.1.old/fs/mini_fo/dentry.c linux-2.6.21.1.dev/fs/mini_fo/dentry.c +--- linux-2.6.21.1.old/fs/mini_fo/dentry.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/dentry.c 2007-05-26 21:01:26.161330176 +0200 +@@ -0,0 +1,244 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif ++ ++#include "fist.h" ++#include "mini_fo.h" ++ ++/* ++ * THIS IS A BOOLEAN FUNCTION: returns 1 if valid, 0 otherwise. ++ */ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++mini_fo_d_revalidate(dentry_t *dentry, struct nameidata *nd) ++#else ++mini_fo_d_revalidate(dentry_t *dentry, int flags) ++#endif ++{ ++ int err1 = 1; /* valid = 1, invalid = 0 */ ++ int err2 = 1; ++ dentry_t *hidden_dentry; ++ dentry_t *hidden_sto_dentry; ++ ++ ++ check_mini_fo_dentry(dentry); ++ ++ hidden_dentry = dtohd(dentry); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ if(hidden_dentry && ++ hidden_dentry->d_op && ++ hidden_dentry->d_op->d_revalidate) { ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ err1 = hidden_dentry->d_op->d_revalidate(hidden_dentry, nd); ++#else ++ err1 = hidden_dentry->d_op->d_revalidate(hidden_dentry, flags); ++#endif ++ } ++ if(hidden_sto_dentry && ++ hidden_sto_dentry->d_op && ++ hidden_sto_dentry->d_op->d_revalidate) { ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ err2 = hidden_sto_dentry->d_op->d_revalidate(hidden_sto_dentry, ++ nd); ++#else ++ err2 = hidden_sto_dentry->d_op->d_revalidate(hidden_sto_dentry, ++ flags); ++#endif ++ } ++ ++ /* mk: if one of the lower level dentries are valid, ++ * the mini_fo dentry is too. ++ */ ++ return (err1 || err2); ++} ++ ++ ++STATIC int ++mini_fo_d_hash(dentry_t *dentry, qstr_t *name) ++{ ++ int err = 0; ++ dentry_t *hidden_dentry; ++ dentry_t *hidden_sto_dentry; ++ ++ /* hidden_dentry = mini_fo_hidden_dentry(dentry); ++ * hidden_sto_dentry = mini_fo_hidden_sto_dentry(dentry); */ ++ ++ /* state 1, 3, 4, 5: build the hash for the storage dentry */ ++ if((dtopd(dentry)->state == MODIFIED) || ++ (dtopd(dentry)->state == CREATED) || ++ (dtopd(dentry)->state == DEL_REWRITTEN) || ++ (dtopd(dentry)->state == DELETED)) { ++ hidden_sto_dentry = dtohd2(dentry); ++ if(hidden_sto_dentry && ++ hidden_sto_dentry->d_op && ++ hidden_sto_dentry->d_op->d_hash) { ++ err = hidden_sto_dentry->d_op->d_hash(hidden_sto_dentry, name); ++ } ++ goto out; ++ } ++ /* state 2: build the hash for the base dentry */ ++ if(dtopd(dentry)->state == UNMODIFIED) { ++ hidden_dentry = dtohd(dentry); ++ if(hidden_dentry && ++ hidden_dentry->d_op && ++ hidden_dentry->d_op->d_hash) { ++ err = hidden_dentry->d_op->d_hash(hidden_dentry, name); ++ } ++ goto out; ++ } ++ /* state 6: build hash for the dentry that exists */ ++ if(dtopd(dentry)->state == NON_EXISTANT) { ++ hidden_sto_dentry = dtohd2(dentry); ++ if(hidden_sto_dentry && ++ hidden_sto_dentry->d_op && ++ hidden_sto_dentry->d_op->d_hash) { ++ err = hidden_sto_dentry->d_op->d_hash(hidden_sto_dentry, name); ++ goto out; ++ } ++ hidden_dentry = dtohd(dentry); ++ if(hidden_dentry && ++ hidden_dentry->d_op && ++ hidden_dentry->d_op->d_hash) { ++ err = hidden_dentry->d_op->d_hash(hidden_dentry, name); ++ goto out; ++ } ++ } ++ ++ printk(KERN_CRIT "mini_fo: d_hash: invalid state detected.\n"); ++ ++ out: ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_d_compare(dentry_t *dentry, qstr_t *a, qstr_t *b) ++{ ++ int err; ++ dentry_t *hidden_dentry=NULL; ++ ++ /* hidden_dentry = mini_fo_hidden_dentry(dentry); */ ++ if(dtohd2(dentry)) ++ hidden_dentry = dtohd2(dentry); ++ else if(dtohd(dentry)) ++ hidden_dentry = dtohd(dentry); ++ ++ if (hidden_dentry && hidden_dentry->d_op && hidden_dentry->d_op->d_compare) { ++ err = hidden_dentry->d_op->d_compare(hidden_dentry, a, b); ++ } else { ++ err = ((a->len != b->len) || memcmp(a->name, b->name, b->len)); ++ } ++ ++ return err; ++} ++ ++ ++int ++mini_fo_d_delete(dentry_t *dentry) ++{ ++ dentry_t *hidden_dentry; ++ dentry_t *hidden_sto_dentry; ++ int err = 0; ++ ++ /* this could be a negative dentry, so check first */ ++ if (!dtopd(dentry)) { ++ printk(KERN_CRIT "mini_fo_d_delete: negative dentry passed.\n"); ++ goto out; ++ } ++ hidden_dentry = dtohd(dentry); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ if(hidden_dentry) { ++ if(hidden_dentry->d_op && ++ hidden_dentry->d_op->d_delete) { ++ err = hidden_dentry->d_op->d_delete(hidden_dentry); ++ } ++ } ++ if(hidden_sto_dentry) { ++ if(hidden_sto_dentry->d_op && ++ hidden_sto_dentry->d_op->d_delete) { ++ err = hidden_sto_dentry->d_op->d_delete(hidden_sto_dentry); ++ } ++ } ++ ++ out: ++ return err; ++} ++ ++ ++void ++mini_fo_d_release(dentry_t *dentry) ++{ ++ dentry_t *hidden_dentry; ++ dentry_t *hidden_sto_dentry; ++ ++ ++ /* this could be a negative dentry, so check first */ ++ if (!dtopd(dentry)) { ++ printk(KERN_CRIT "mini_fo_d_release: no private data.\n"); ++ goto out; ++ } ++ hidden_dentry = dtohd(dentry); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ if(hidden_dentry) { ++ /* decrement hidden dentry's counter and free its inode */ ++ dput(hidden_dentry); ++ } ++ if(hidden_sto_dentry) { ++ /* decrement hidden dentry's counter and free its inode */ ++ dput(hidden_sto_dentry); ++ } ++ ++ /* free private data (mini_fo_dentry_info) here */ ++ kfree(dtopd(dentry)); ++ __dtopd(dentry) = NULL; /* just to be safe */ ++ out: ++ return; ++} ++ ++ ++/* ++ * we don't really need mini_fo_d_iput, because dentry_iput will call iput() if ++ * mini_fo_d_iput is not defined. We left this implemented for ease of ++ * tracing/debugging. ++ */ ++void ++mini_fo_d_iput(dentry_t *dentry, inode_t *inode) ++{ ++ iput(inode); ++} ++ ++ ++struct dentry_operations mini_fo_dops = { ++ d_revalidate: mini_fo_d_revalidate, ++ d_hash: mini_fo_d_hash, ++ d_compare: mini_fo_d_compare, ++ d_release: mini_fo_d_release, ++ d_delete: mini_fo_d_delete, ++ d_iput: mini_fo_d_iput, ++}; +diff -urN linux-2.6.21.1.old/fs/mini_fo/file.c linux-2.6.21.1.dev/fs/mini_fo/file.c +--- linux-2.6.21.1.old/fs/mini_fo/file.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/file.c 2007-05-26 21:01:26.162330024 +0200 +@@ -0,0 +1,713 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif ++ ++#include "fist.h" ++#include "mini_fo.h" ++#define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1)) ++ ++/******************* ++ * File Operations * ++ *******************/ ++ ++STATIC loff_t ++mini_fo_llseek(file_t *file, loff_t offset, int origin) ++{ ++ loff_t err; ++ file_t *hidden_file = NULL; ++ ++ if(S_ISDIR(file->f_dentry->d_inode->i_mode)) { ++ /* Check if trying to llseek from a directory */ ++ err = -EISDIR; ++ goto out; ++ } ++ if (ftopd(file) != NULL) { ++ if(ftohf2(file)) { ++ hidden_file = ftohf2(file); ++ } else { ++ hidden_file = ftohf(file); ++ } ++ } ++ ++ /* always set hidden position to this one */ ++ hidden_file->f_pos = file->f_pos; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ memcpy(&(hidden_file->f_ra), ++ &(file->f_ra), ++ sizeof(struct file_ra_state)); ++#else ++ if (file->f_reada) { /* update readahead information if needed */ ++ hidden_file->f_reada = file->f_reada; ++ hidden_file->f_ramax = file->f_ramax; ++ hidden_file->f_raend = file->f_raend; ++ hidden_file->f_ralen = file->f_ralen; ++ hidden_file->f_rawin = file->f_rawin; ++ } ++#endif ++ if (hidden_file->f_op && hidden_file->f_op->llseek) ++ err = hidden_file->f_op->llseek(hidden_file, offset, origin); ++ else ++ err = generic_file_llseek(hidden_file, offset, origin); ++ ++ if (err < 0) ++ goto out; ++ ++ if (err != file->f_pos) { ++ file->f_pos = err; ++ // ION maybe this? ++ // file->f_pos = hidden_file->f_pos; ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ file->f_reada = 0; ++#endif ++ file->f_version++; ++ } ++ ++ out: ++ return err; ++} ++ ++ ++/* mk: fanout capable */ ++STATIC ssize_t ++mini_fo_read(file_t *file, char *buf, size_t count, loff_t *ppos) ++{ ++ int err = -EINVAL; ++ file_t *hidden_file = NULL; ++ loff_t pos = *ppos; ++ ++ if(S_ISDIR(file->f_dentry->d_inode->i_mode)) { ++ /* Check if trying to read from a directory */ ++ /* printk(KERN_CRIT "mini_fo_read: ERROR: trying to read data from a directory.\n"); */ ++ err = -EISDIR; ++ goto out; ++ } ++ ++ if (ftopd(file) != NULL) { ++ if(ftohf2(file)) { ++ hidden_file = ftohf2(file); ++ } else { ++ hidden_file = ftohf(file); ++ } ++ } ++ ++ if (!hidden_file->f_op || !hidden_file->f_op->read) ++ goto out; ++ ++ err = hidden_file->f_op->read(hidden_file, buf, count, &pos); ++ *ppos = pos; ++ ++ if (err >= 0) { ++ /* atime should also be updated for reads of size zero or more */ ++ fist_copy_attr_atime(file->f_dentry->d_inode, ++ hidden_file->f_dentry->d_inode); ++ } ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ /* ++ * MAJOR HACK ++ * because pread() does not have any way to tell us that it is ++ * our caller, then we don't know for sure if we have to update ++ * the file positions. This hack relies on read() having passed us ++ * the "real" pointer of its struct file's f_pos field. ++ */ ++ if (ppos == &file->f_pos) ++ hidden_file->f_pos = *ppos = pos; ++ if (hidden_file->f_reada) { /* update readahead information if needed */ ++ file->f_reada = hidden_file->f_reada; ++ file->f_ramax = hidden_file->f_ramax; ++ file->f_raend = hidden_file->f_raend; ++ file->f_ralen = hidden_file->f_ralen; ++ file->f_rawin = hidden_file->f_rawin; ++ } ++#else ++ memcpy(&(file->f_ra),&(hidden_file->f_ra),sizeof(struct file_ra_state)); ++#endif ++ ++ out: ++ return err; ++} ++ ++ ++/* this mini_fo_write() does not modify data pages! */ ++STATIC ssize_t ++mini_fo_write(file_t *file, const char *buf, size_t count, loff_t *ppos) ++{ ++ int err = -EINVAL; ++ file_t *hidden_file = NULL; ++ inode_t *inode; ++ inode_t *hidden_inode; ++ loff_t pos = *ppos; ++ ++ /* mk: fan out: */ ++ if (ftopd(file) != NULL) { ++ if(ftohf2(file)) { ++ hidden_file = ftohf2(file); ++ } else { ++ /* This is bad! We have no storage file to write to. This ++ * should never happen because if a file is opened for ++ * writing, a copy should have been made earlier. ++ */ ++ printk(KERN_CRIT "mini_fo: write : ERROR, no storage file to write.\n"); ++ err = -EINVAL; ++ goto out; ++ } ++ } ++ ++ inode = file->f_dentry->d_inode; ++ hidden_inode = itohi2(inode); ++ if(!hidden_inode) { ++ printk(KERN_CRIT "mini_fo: write: no sto inode found, not good.\n"); ++ goto out; ++ } ++ ++ if (!hidden_file->f_op || !hidden_file->f_op->write) ++ goto out; ++ ++ /* adjust for append -- seek to the end of the file */ ++ if (file->f_flags & O_APPEND) ++ pos = inode->i_size; ++ ++ err = hidden_file->f_op->write(hidden_file, buf, count, &pos); ++ ++ /* ++ * copy ctime and mtime from lower layer attributes ++ * atime is unchanged for both layers ++ */ ++ if (err >= 0) ++ fist_copy_attr_times(inode, hidden_inode); ++ ++ *ppos = pos; ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ /* ++ * XXX: MAJOR HACK ++ * ++ * because pwrite() does not have any way to tell us that it is ++ * our caller, then we don't know for sure if we have to update ++ * the file positions. This hack relies on write() having passed us ++ * the "real" pointer of its struct file's f_pos field. ++ */ ++ if (ppos == &file->f_pos) ++ hidden_file->f_pos = *ppos = pos; ++#endif ++ /* update this inode's size */ ++ if (pos > inode->i_size) ++ inode->i_size = pos; ++ ++ out: ++ return err; ++} ++ ++/* Global variable to hold a file_t pointer. ++ * This serves to allow mini_fo_filldir function to know which file is ++ * beeing read, which is required for two reasons: ++ * ++ * - be able to call wol functions in order to avoid listing deleted ++ * base files. ++ * - if we're reading a directory which is in state 1, we need to ++ * maintain a list (in mini_fo_filldir) of which files allready ++ * have been copied to userspace,to detect files existing in base ++ * and storage and not list them twice. ++ */ ++filldir_t mini_fo_filldir_orig; ++file_t *mini_fo_filldir_file; ++ ++/* mainly copied from fs/readdir.c */ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++mini_fo_filldir(void * __buf, const char * name, int namlen, loff_t offset, ++ u64 ino, unsigned int d_type) ++#else ++mini_fo_filldir(void * __buf, const char * name, int namlen, loff_t offset, ++ ino_t ino, unsigned int d_type) ++#endif ++{ ++ struct getdents_callback * buf = (struct getdents_callback *) __buf; ++ file_t* file = mini_fo_filldir_file; ++ ++ /* In theses states we filter meta files in storage (WOL) */ ++ if(file && (dtopd(file->f_dentry)->state == MODIFIED || ++ dtopd(file->f_dentry)->state == CREATED || ++ dtopd(file->f_dentry)->state == DEL_REWRITTEN)) { ++ ++ int tmp = strlen(META_FILENAME); ++ if(tmp == namlen) { ++ if(!strncmp(name, META_FILENAME, namlen)) ++ return 0; ++ } ++ } ++ ++ /* check if we are merging the contents of storage and base */ ++ if(file && dtopd(file->f_dentry)->state == MODIFIED) { ++ /* check if we are still reading storage contents, if ++ * yes, we just save the name of the file for duplicate ++ * checking later. */ ++ ++ if(!ftopd(file)->rd.sto_done) { ++ /* put file into ndl list */ ++ if(ndl_add_entry(&ftopd(file)->rd, name, namlen)) ++ printk(KERN_CRIT "mini_fo_filldir: Error adding to ndl.\n"); ++ } else { ++ /* check if file has been deleted */ ++ if(meta_check_d_entry(file->f_dentry, name, namlen)) ++ return 0; ++ ++ /* do duplicate checking */ ++ if(ndl_check_entry(&ftopd(file)->rd, name, namlen)) ++ return 0; ++ } ++ } ++ ++ return mini_fo_filldir_orig(buf, name, namlen, offset, ino, d_type); ++} ++ ++ ++STATIC int ++mini_fo_readdir(file_t *file, void *dirent, filldir_t filldir) ++{ ++ int err = 0;/* mk: ??? -ENOTDIR; */ ++ file_t *hidden_file = NULL; ++ file_t *hidden_sto_file = NULL; ++ inode_t *inode; ++ struct getdents_callback *buf; ++ int oldcount; ++ ++#if defined(FIST_FILTER_NAME) || defined(FIST_FILTER_SCA) ++ struct mini_fo_getdents_callback buf; ++#endif /* FIST_FILTER_NAME || FIST_FILTER_SCA */ ++ ++ buf = (struct getdents_callback *) dirent; ++ oldcount = buf->count; ++ inode = file->f_dentry->d_inode; ++ mini_fo_filldir_file = file; ++ mini_fo_filldir_orig = filldir; ++ ++ ftopd(file)->rd.sto_done = 0; ++ do { ++ if (ftopd(file) != NULL) { ++ if(ftohf2(file)) { ++ hidden_sto_file = ftohf2(file); ++ err = vfs_readdir(hidden_sto_file, mini_fo_filldir, dirent); ++ file->f_pos = hidden_sto_file->f_pos; ++ if (err > 0) ++ fist_copy_attr_atime(inode, hidden_sto_file->f_dentry->d_inode); ++ /* not finshed yet, we'll be called again */ ++ if (buf->count != oldcount) ++ break; ++ } ++ ++ ftopd(file)->rd.sto_done = 1; ++ ++ if(ftohf(file)) { ++ hidden_file = ftohf(file); ++ err = vfs_readdir(hidden_file, mini_fo_filldir, dirent); ++ file->f_pos = hidden_file->f_pos; ++ if (err > 0) ++ fist_copy_attr_atime(inode, hidden_file->f_dentry->d_inode); ++ } ++ ++ } ++ } while (0); ++ ++ /* mk: ++ * we need to check if all the directory data has been copied to userspace, ++ * or if we will be called again by userspace to complete the operation. ++ */ ++ if(buf->count == oldcount) { ++ ndl_put_list(&ftopd(file)->rd); ++ } ++ ++ /* unset this, safe */ ++ mini_fo_filldir_file = NULL; ++ return err; ++} ++ ++ ++STATIC unsigned int ++mini_fo_poll(file_t *file, poll_table *wait) ++{ ++ unsigned int mask = DEFAULT_POLLMASK; ++ file_t *hidden_file = NULL; ++ ++ if (ftopd(file) != NULL) { ++ if(ftohf2(file)) { ++ hidden_file = ftohf2(file); ++ } else { ++ hidden_file = ftohf(file); ++ } ++ } ++ ++ if (!hidden_file->f_op || !hidden_file->f_op->poll) ++ goto out; ++ ++ mask = hidden_file->f_op->poll(hidden_file, wait); ++ ++ out: ++ return mask; ++} ++ ++/* FIST-LITE special version of mmap */ ++STATIC int ++mini_fo_mmap(file_t *file, vm_area_t *vma) ++{ ++ int err = 0; ++ file_t *hidden_file = NULL; ++ ++ /* fanout capability */ ++ if (ftopd(file) != NULL) { ++ if(ftohf2(file)) { ++ hidden_file = ftohf2(file); ++ } else { ++ hidden_file = ftohf(file); ++ } ++ } ++ ++ ASSERT(hidden_file != NULL); ++ ASSERT(hidden_file->f_op != NULL); ++ ASSERT(hidden_file->f_op->mmap != NULL); ++ ++ vma->vm_file = hidden_file; ++ err = hidden_file->f_op->mmap(hidden_file, vma); ++ get_file(hidden_file); /* make sure it doesn't get freed on us */ ++ fput(file); /* no need to keep extra ref on ours */ ++ ++ return err; ++} ++ ++ ++ ++STATIC int ++mini_fo_open(inode_t *inode, file_t *file) ++{ ++ int err = 0; ++ int hidden_flags; ++ file_t *hidden_file = NULL; ++ dentry_t *hidden_dentry = NULL; ++ ++ /* fanout stuff */ ++ file_t *hidden_sto_file = NULL; ++ dentry_t *hidden_sto_dentry = NULL; ++ ++ __ftopd(file) = ++ kmalloc(sizeof(struct mini_fo_file_info), GFP_KERNEL); ++ if (!ftopd(file)) { ++ err = -ENOMEM; ++ goto out; ++ } ++ ++ /* init the readdir_helper structure */ ++ INIT_LIST_HEAD(&ftopd(file)->rd.ndl_list); ++ ftopd(file)->rd.ndl_size = 0; ++ ++ /* In certain paths this could stay uninitalized and cause trouble */ ++ ftohf(file) = NULL; ++ ftohf2(file) = NULL; ++ hidden_flags = file->f_flags; ++ ++ /* create storage files? */ ++ if(dtost(file->f_dentry) == UNMODIFIED) { ++ if(!IS_WRITE_FLAG(file->f_flags)) { ++ hidden_dentry = dtohd(file->f_dentry); ++ dget(hidden_dentry); ++ /* dentry_open will decrement mnt refcnt if err. ++ * otherwise fput() will do an mntput() for us upon file close. */ ++ mntget(stopd(inode->i_sb)->hidden_mnt); ++ hidden_file = dentry_open(hidden_dentry, ++ stopd(inode->i_sb)->hidden_mnt, ++ hidden_flags); ++ if (IS_ERR(hidden_file)) { ++ err = PTR_ERR(hidden_file); ++ dput(hidden_dentry); ++ goto out; ++ } ++ ftohf(file) = hidden_file; /* link two files */ ++ goto out; ++ } ++ else { ++ if(S_ISDIR(file->f_dentry->d_inode->i_mode)) { ++ err = dir_unmod_to_mod(file->f_dentry); ++ } else ++ err = nondir_unmod_to_mod(file->f_dentry, 1); ++ ++ if (err) { ++ printk("mini_fo_open: ERROR creating storage file.\n"); ++ goto out; ++ } ++ } ++ } ++ hidden_sto_dentry = dtohd2(file->f_dentry); ++ dget(hidden_sto_dentry); ++ ++ if(dtopd(file->f_dentry)->state == MODIFIED) { ++ /* Directorys are special, interpose on both lower level files */ ++ if(S_ISDIR(itohi(inode)->i_mode)) { ++ /* check for invalid file types of lower level files */ ++ if(!(S_ISDIR(itohi(inode)->i_mode) && S_ISDIR(itohi2(inode)->i_mode))) { ++ printk(KERN_CRIT "mini_fo_open: meta data corruption detected.\n"); ++ dput(hidden_sto_dentry); ++ err = -EINVAL; ++ goto out; ++ } ++ ++ /* lower level directorys are ok, open the base file */ ++ hidden_dentry = dtohd(file->f_dentry); ++ dget(hidden_dentry); ++ ++ mntget(stopd(inode->i_sb)->hidden_mnt); ++ hidden_file = dentry_open(hidden_dentry, ++ stopd(inode->i_sb)->hidden_mnt, ++ hidden_flags); ++ if (IS_ERR(hidden_file)) { ++ err = PTR_ERR(hidden_file); ++ dput(hidden_dentry); ++ dput(hidden_sto_dentry); ++ goto out; ++ } ++ ftohf(file) = hidden_file; /* link the two files */ ++ } ++ } ++ ++ if(!exists_in_storage(file->f_dentry)) { ++ printk(KERN_CRIT "mini_fo_open: invalid file state detected.\n"); ++ err = -EINVAL; ++ dput(hidden_sto_dentry); ++ ++ /* If the base file has been opened, we need to close it here */ ++ if(ftohf(file)) { ++ if (hidden_file->f_op && hidden_file->f_op->flush) ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ hidden_file->f_op->flush(hidden_file, NULL); ++#else ++ hidden_file->f_op->flush(hidden_file); ++#endif ++ dput(hidden_dentry); ++ } ++ goto out; ++ } ++ ++ /* ok, now we can safely open the storage file */ ++ mntget(stopd(inode->i_sb)->hidden_mnt2); ++ hidden_sto_file = dentry_open(hidden_sto_dentry, ++ stopd(inode->i_sb)->hidden_mnt2, ++ hidden_flags); ++ ++ /* dentry_open dputs the dentry if it fails */ ++ if (IS_ERR(hidden_sto_file)) { ++ err = PTR_ERR(hidden_sto_file); ++ /* close base file if open */ ++ if(ftohf(file)) { ++ if (hidden_file->f_op && hidden_file->f_op->flush) ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ hidden_file->f_op->flush(hidden_file, NULL); ++#else ++ hidden_file->f_op->flush(hidden_file); ++#endif ++ dput(hidden_dentry); ++ } ++ goto out; ++ } ++ ftohf2(file) = hidden_sto_file; /* link storage file */ ++ ++ out: ++ if (err < 0 && ftopd(file)) { ++ kfree(ftopd(file)); ++ } ++ return err; ++} ++ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++mini_fo_flush(file_t *file, fl_owner_t id) ++#else ++mini_fo_flush(file_t *file) ++#endif ++{ ++ int err1 = 0; /* assume ok (see open.c:close_fp) */ ++ int err2 = 0; ++ file_t *hidden_file = NULL; ++ ++ check_mini_fo_file(file); ++ ++ /* mk: we don't do any state checking here, as its not worth the time. ++ * Just flush the lower level files if they exist. ++ */ ++ if(ftopd(file) != NULL) { ++ if(ftohf(file) != NULL) { ++ hidden_file = ftohf(file); ++ if (hidden_file->f_op && hidden_file->f_op->flush) ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ err1 = hidden_file->f_op->flush(hidden_file, id); ++#else ++ err1 = hidden_file->f_op->flush(hidden_file); ++#endif ++ } ++ if(ftohf2(file) != NULL) { ++ hidden_file = ftohf2(file); ++ if (hidden_file->f_op && hidden_file->f_op->flush) ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ err2 = hidden_file->f_op->flush(hidden_file, id); ++#else ++ err2 = hidden_file->f_op->flush(hidden_file); ++#endif ++ } ++ } ++ return (err1 | err2); ++} ++ ++ ++STATIC int ++mini_fo_release(inode_t *inode, file_t *file) ++{ ++ int err = 0; ++ file_t *hidden_file = NULL; ++ ++ if (ftopd(file) != NULL) { ++ if(ftohf(file)) { ++ hidden_file = ftohf(file); ++ fput(hidden_file); ++ } ++ if(ftohf2(file)) { ++ hidden_file = ftohf2(file); ++ fput(hidden_file); ++ } ++ kfree(ftopd(file)); ++ } ++ return err; ++} ++ ++STATIC int ++mini_fo_fsync(file_t *file, dentry_t *dentry, int datasync) ++{ ++ int err1 = 0; ++ int err2 = 0; ++ file_t *hidden_file = NULL; ++ dentry_t *hidden_dentry; ++ ++ check_mini_fo_file(file); ++ ++ if ((hidden_file = ftohf(file)) != NULL) { ++ hidden_dentry = dtohd(dentry); ++ if (hidden_file->f_op && hidden_file->f_op->fsync) { ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dentry->d_inode->i_sem); ++#endif ++ err1 = hidden_file->f_op->fsync(hidden_file, hidden_dentry, datasync); ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dentry->d_inode->i_sem); ++#endif ++ } ++ } ++ ++ if ((hidden_file = ftohf2(file)) != NULL) { ++ hidden_dentry = dtohd2(dentry); ++ if (hidden_file->f_op && hidden_file->f_op->fsync) { ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dentry->d_inode->i_sem); ++#endif ++ err2 = hidden_file->f_op->fsync(hidden_file, hidden_dentry, datasync); ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dentry->d_inode->i_sem); ++#endif ++ } ++ } ++ else ++ goto err; ++ ++err: ++ return (err1 || err2); ++} ++ ++ ++STATIC int ++mini_fo_fasync(int fd, file_t *file, int flag) ++{ ++ int err1 = 0; ++ int err2 = 0; ++ ++ file_t *hidden_file = NULL; ++ ++ check_mini_fo_file(file); ++ ++ if((hidden_file = ftohf(file)) != NULL) { ++ err1 = hidden_file->f_op->fasync(fd, hidden_file, flag); ++ } ++ if((hidden_file = ftohf2(file)) != NULL) { ++ err2 = hidden_file->f_op->fasync(fd, hidden_file, flag); ++ } ++ ++ return (err1 || err2); ++} ++ ++ ++ ++struct file_operations mini_fo_dir_fops = ++ { ++ read: generic_read_dir, ++ write: mini_fo_write, ++ readdir: mini_fo_readdir, ++ poll: mini_fo_poll, ++ /* ioctl: mini_fo_ioctl, */ ++ mmap: mini_fo_mmap, ++ open: mini_fo_open, ++ flush: mini_fo_flush, ++ release: mini_fo_release, ++ fsync: mini_fo_fsync, ++ fasync: mini_fo_fasync, ++ /* not needed lock: mini_fo_lock, */ ++ /* not needed: readv */ ++ /* not needed: writev */ ++ /* not implemented: sendpage */ ++ /* not implemented: get_unmapped_area */ ++ }; ++ ++struct file_operations mini_fo_main_fops = ++ { ++ llseek: mini_fo_llseek, ++ read: mini_fo_read, ++ write: mini_fo_write, ++ readdir: mini_fo_readdir, ++ poll: mini_fo_poll, ++ /* ioctl: mini_fo_ioctl, */ ++ mmap: mini_fo_mmap, ++ open: mini_fo_open, ++ flush: mini_fo_flush, ++ release: mini_fo_release, ++ fsync: mini_fo_fsync, ++ fasync: mini_fo_fasync, ++ /* not needed: lock: mini_fo_lock, */ ++ /* not needed: readv */ ++ /* not needed: writev */ ++ /* not implemented: sendpage */ ++ /* not implemented: get_unmapped_area */ ++ }; +diff -urN linux-2.6.21.1.old/fs/mini_fo/fist.h linux-2.6.21.1.dev/fs/mini_fo/fist.h +--- linux-2.6.21.1.old/fs/mini_fo/fist.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/fist.h 2007-05-26 21:01:26.162330024 +0200 +@@ -0,0 +1,252 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifndef __FIST_H_ ++#define __FIST_H_ ++ ++/* ++ * KERNEL ONLY CODE: ++ */ ++#ifdef __KERNEL__ ++#include <linux/version.h> ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19) ++#include <linux/autoconf.h> ++#else ++#include <linux/config.h> ++#endif ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++#ifdef CONFIG_MODVERSIONS ++# define MODVERSIONS ++# include <linux/modversions.h> ++#endif /* CONFIG_MODVERSIONS */ ++#endif /* KERNEL_VERSION < 2.6.0 */ ++#include <linux/sched.h> ++#include <linux/kernel.h> ++#include <linux/mm.h> ++#include <linux/string.h> ++#include <linux/stat.h> ++#include <linux/errno.h> ++#include <linux/wait.h> ++#include <linux/limits.h> ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++#include <linux/locks.h> ++#else ++#include <linux/buffer_head.h> ++#include <linux/pagemap.h> ++#include <linux/namei.h> ++#include <linux/module.h> ++#include <linux/mount.h> ++#include <linux/page-flags.h> ++#include <linux/writeback.h> ++#include <linux/statfs.h> ++#endif ++#include <linux/smp.h> ++#include <linux/smp_lock.h> ++#include <linux/file.h> ++#include <linux/slab.h> ++#include <linux/vmalloc.h> ++#include <linux/poll.h> ++#include <linux/list.h> ++#include <linux/init.h> ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) ++#include <linux/xattr.h> ++#endif ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++#include <linux/security.h> ++#endif ++ ++#include <linux/swap.h> ++ ++#include <asm/system.h> ++/* #include <asm/segment.h> */ ++#include <asm/mman.h> ++#include <linux/seq_file.h> ++ ++/* ++ * MACROS: ++ */ ++ ++/* those mapped to ATTR_* were copied from linux/fs.h */ ++#define FA_MODE ATTR_MODE ++#define FA_UID ATTR_UID ++#define FA_GID ATTR_GID ++#define FA_SIZE ATTR_SIZE ++#define FA_ATIME ATTR_ATIME ++#define FA_MTIME ATTR_MTIME ++#define FA_CTIME ATTR_CTIME ++#define FA_ATIME_SET ATTR_ATIME_SET ++#define FA_MTIME_SET ATTR_MTIME_SET ++#define FA_FORCE ATTR_FORCE ++#define FA_ATTR_FLAGS ATTR_ATTR_FLAG ++ ++/* must be greater than all other ATTR_* flags! */ ++#define FA_NLINK 2048 ++#define FA_BLKSIZE 4096 ++#define FA_BLOCKS 8192 ++#define FA_TIMES (FA_ATIME|FA_MTIME|FA_CTIME) ++#define FA_ALL 0 ++ ++/* macros to manage changes between kernels */ ++#define INODE_DATA(i) (&(i)->i_data) ++ ++#define MIN(x,y) ((x < y) ? (x) : (y)) ++#define MAX(x,y) ((x > y) ? (x) : (y)) ++#define MAXPATHLEN PATH_MAX ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,5) ++# define lookup_one_len(a,b,c) lookup_one(a,b) ++#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,4,5) */ ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,8) ++# define generic_file_llseek default_llseek ++#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,4,8) */ ++ ++#ifndef SEEK_SET ++# define SEEK_SET 0 ++#endif /* not SEEK_SET */ ++ ++#ifndef SEEK_CUR ++# define SEEK_CUR 1 ++#endif /* not SEEK_CUR */ ++ ++#ifndef SEEK_END ++# define SEEK_END 2 ++#endif /* not SEEK_END */ ++ ++#ifndef DEFAULT_POLLMASK ++# define DEFAULT_POLLMASK (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM) ++#endif /* not DEFAULT_POLLMASK */ ++ ++/* XXX: fix this so fistgen generates kfree() code directly */ ++#define kfree_s(a,b) kfree(a) ++ ++/* ++ * TYPEDEFS: ++ */ ++typedef struct dentry dentry_t; ++typedef struct file file_t; ++typedef struct inode inode_t; ++typedef inode_t vnode_t; ++typedef struct page page_t; ++typedef struct qstr qstr_t; ++typedef struct super_block super_block_t; ++typedef super_block_t vfs_t; ++typedef struct vm_area_struct vm_area_t; ++ ++ ++/* ++ * EXTERNALS: ++ */ ++ ++#define FPPF(str,page) printk("PPF %s 0x%x/%d: Lck:%d Err:%d Ref:%d Upd:%d Other::%d:%d:%d:%d:\n", \ ++ str, \ ++ (int) page, \ ++ (int) page->index, \ ++ (PageLocked(page) ? 1 : 0), \ ++ (PageError(page) ? 1 : 0), \ ++ (PageReferenced(page) ? 1 : 0), \ ++ (Page_Uptodate(page) ? 1 : 0), \ ++ (PageDecrAfter(page) ? 1 : 0), \ ++ (PageSlab(page) ? 1 : 0), \ ++ (PageSwapCache(page) ? 1 : 0), \ ++ (PageReserved(page) ? 1 : 0) \ ++ ) ++#define EZKDBG printk("EZK %s:%d:%s\n",__FILE__,__LINE__,__FUNCTION__) ++#if 0 ++# define EZKDBG1 printk("EZK %s:%d\n",__FILE__,__LINE__) ++#else ++# define EZKDBG1 ++#endif ++ ++extern int fist_get_debug_value(void); ++extern int fist_set_debug_value(int val); ++#if 0 /* mini_fo doesn't need these */ ++extern void fist_dprint_internal(int level, char *str,...); ++extern void fist_print_dentry(char *str, const dentry_t *dentry); ++extern void fist_print_inode(char *str, const inode_t *inode); ++extern void fist_print_file(char *str, const file_t *file); ++extern void fist_print_buffer_flags(char *str, struct buffer_head *buffer); ++extern void fist_print_page_flags(char *str, page_t *page); ++extern void fist_print_page_bytes(char *str, page_t *page); ++extern void fist_print_pte_flags(char *str, const page_t *page); ++extern void fist_checkinode(inode_t *inode, char *msg); ++extern void fist_print_sb(char *str, const super_block_t *sb); ++ ++/* §$% by mk: special debug functions */ ++extern void fist_mk_print_dentry(char *str, const dentry_t *dentry); ++extern void fist_mk_print_inode(char *str, const inode_t *inode); ++ ++extern char *add_indent(void); ++extern char *del_indent(void); ++#endif/* mini_fo doesn't need these */ ++ ++ ++#define STATIC ++#define ASSERT(EX) \ ++do { \ ++ if (!(EX)) { \ ++ printk(KERN_CRIT "ASSERTION FAILED: %s at %s:%d (%s)\n", #EX, \ ++ __FILE__, __LINE__, __FUNCTION__); \ ++ (*((char *)0))=0; \ ++ } \ ++} while (0) ++/* same ASSERT, but tell me who was the caller of the function */ ++#define ASSERT2(EX) \ ++do { \ ++ if (!(EX)) { \ ++ printk(KERN_CRIT "ASSERTION FAILED (caller): %s at %s:%d (%s)\n", #EX, \ ++ file, line, func); \ ++ (*((char *)0))=0; \ ++ } \ ++} while (0) ++ ++#if 0 /* mini_fo doesn't need these */ ++#define dprintk(format, args...) printk(KERN_DEBUG format, ##args) ++#define fist_dprint(level, str, args...) fist_dprint_internal(level, KERN_DEBUG str, ## args) ++#define print_entry_location() fist_dprint(4, "%sIN: %s %s:%d\n", add_indent(), __FUNCTION__, __FILE__, __LINE__) ++#define print_exit_location() fist_dprint(4, "%s OUT: %s %s:%d\n", del_indent(), __FUNCTION__, __FILE__, __LINE__) ++#define print_exit_status(status) fist_dprint(4, "%s OUT: %s %s:%d, STATUS: %d\n", del_indent(), __FUNCTION__, __FILE__, __LINE__, status) ++#define print_exit_pointer(status) \ ++do { \ ++ if (IS_ERR(status)) \ ++ fist_dprint(4, "%s OUT: %s %s:%d, RESULT: %ld\n", del_indent(), __FUNCTION__, __FILE__, __LINE__, PTR_ERR(status)); \ ++ else \ ++ fist_dprint(4, "%s OUT: %s %s:%d, RESULT: 0x%x\n", del_indent(), __FUNCTION__, __FILE__, __LINE__, PTR_ERR(status)); \ ++} while (0) ++#endif/* mini_fo doesn't need these */ ++ ++#endif /* __KERNEL__ */ ++ ++ ++/* ++ * DEFINITIONS FOR USER AND KERNEL CODE: ++ * (Note: ioctl numbers 1--9 are reserved for fistgen, the rest ++ * are auto-generated automatically based on the user's .fist file.) ++ */ ++# define FIST_IOCTL_GET_DEBUG_VALUE _IOR(0x15, 1, int) ++# define FIST_IOCTL_SET_DEBUG_VALUE _IOW(0x15, 2, int) ++ ++#endif /* not __FIST_H_ */ +diff -urN linux-2.6.21.1.old/fs/mini_fo/inode.c linux-2.6.21.1.dev/fs/mini_fo/inode.c +--- linux-2.6.21.1.old/fs/mini_fo/inode.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/inode.c 2007-05-26 21:01:26.164329720 +0200 +@@ -0,0 +1,1573 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif ++ ++#include "fist.h" ++#include "mini_fo.h" ++ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++mini_fo_create(inode_t *dir, dentry_t *dentry, int mode, struct nameidata *nd) ++#else ++mini_fo_create(inode_t *dir, dentry_t *dentry, int mode) ++#endif ++{ ++ int err = 0; ++ ++ check_mini_fo_dentry(dentry); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ err = create_sto_reg_file(dentry, mode, nd); ++#else ++ err = create_sto_reg_file(dentry, mode); ++#endif ++ check_mini_fo_dentry(dentry); ++ return err; ++} ++ ++ ++STATIC dentry_t * ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++mini_fo_lookup(inode_t *dir, dentry_t *dentry, struct nameidata* nd) ++#else ++mini_fo_lookup(inode_t *dir, dentry_t *dentry) ++#endif ++{ ++ int err = 0; ++ dentry_t *hidden_dir_dentry; ++ dentry_t *hidden_dentry = NULL; ++ ++ dentry_t *hidden_sto_dir_dentry; ++ dentry_t *hidden_sto_dentry = NULL; ++ ++ /* whiteout flag */ ++ int del_flag = 0; ++ char *bpath = NULL; ++ ++ const char *name; ++ unsigned int namelen; ++ ++ /* Don't allow lookups of META-files */ ++ namelen = strlen(META_FILENAME); ++ if(namelen == dentry->d_name.len) { ++ if(!strncmp(dentry->d_name.name, META_FILENAME, namelen)) { ++ err = -ENOENT; ++ goto out; ++ } ++ } ++ ++ hidden_dir_dentry = dtohd(dentry->d_parent); ++ hidden_sto_dir_dentry = dtohd2(dentry->d_parent); ++ ++ name = dentry->d_name.name; ++ namelen = dentry->d_name.len; ++ ++ /* must initialize dentry operations */ ++ dentry->d_op = &mini_fo_dops; ++ ++ /* setup the del_flag */ ++ del_flag = __meta_check_d_entry(dir, name, namelen); ++ bpath = __meta_check_r_entry(dir, name, namelen); ++ ++ /* perform the lookups of base and storage files: ++ * ++ * This caused some serious trouble, as a lookup_one_len passing ++ * a negative dentry oopses. Solution is to only do the lookup ++ * if the dentry is positive, else we set it to NULL ++ * More trouble, who said a *_dir_dentry can't be NULL? ++ */ ++ if(bpath) { ++ /* Cross-Interposing (C), yeah! */ ++ hidden_dentry = bpath_walk(dir->i_sb, bpath); ++ if(!hidden_dentry || !hidden_dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo_lookup: bpath_walk failed.\n"); ++ err= -EINVAL; ++ goto out; ++ } ++ ++ /* this can be set up safely without fear of spaghetti ++ * interposing as it is only used for copying times */ ++ hidden_dir_dentry = hidden_dentry->d_parent; ++ kfree(bpath); ++ } ++ else if(hidden_dir_dentry && hidden_dir_dentry->d_inode) ++ hidden_dentry = ++ lookup_one_len(name, hidden_dir_dentry, namelen); ++ else ++ hidden_dentry = NULL; ++ ++ if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode) ++ hidden_sto_dentry = ++ lookup_one_len(name, hidden_sto_dir_dentry, namelen); ++ else ++ hidden_sto_dentry = NULL; ++ ++ /* catch error in lookup */ ++ if (IS_ERR(hidden_dentry) || IS_ERR(hidden_sto_dentry)) { ++ /* mk: we need to call dput on the dentry, whose ++ * lookup_one_len operation failed, in order to avoid ++ * unmount trouble. ++ */ ++ if(IS_ERR(hidden_dentry)) { ++ printk(KERN_CRIT "mini_fo_lookup: ERR from base dentry, lookup failed.\n"); ++ err = PTR_ERR(hidden_dentry); ++ } else { ++ dput(hidden_dentry); ++ } ++ if(IS_ERR(hidden_sto_dentry)) { ++ printk(KERN_CRIT "mini_fo_lookup: ERR from storage dentry, lookup failed.\n"); ++ err = PTR_ERR(hidden_sto_dentry); ++ } else { ++ dput(hidden_sto_dentry); ++ } ++ goto out; ++ } ++ ++ /* allocate dentry private data */ ++ __dtopd(dentry) = (struct mini_fo_dentry_info *) ++ kmalloc(sizeof(struct mini_fo_dentry_info), GFP_KERNEL); ++ ++ if (!dtopd(dentry)) { ++ err = -ENOMEM; ++ goto out_dput; ++ } ++ ++ /* check for different states of the mini_fo file to be looked up. */ ++ ++ /* state 1, file has been modified */ ++ if(hidden_dentry && hidden_sto_dentry && ++ hidden_dentry->d_inode && hidden_sto_dentry->d_inode && !del_flag) { ++ ++ /* update parent directory's atime */ ++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode); ++ ++ dtopd(dentry)->state = MODIFIED; ++ dtohd(dentry) = hidden_dentry; ++ dtohd2(dentry) = hidden_sto_dentry; ++ ++ err = mini_fo_tri_interpose(hidden_dentry, ++ hidden_sto_dentry, ++ dentry, dir->i_sb, 1); ++ if (err) { ++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state1).\n"); ++ goto out_free; ++ } ++ goto out; ++ } ++ /* state 2, file is unmodified */ ++ if(hidden_dentry && hidden_dentry->d_inode && !del_flag) { ++ ++ fist_copy_attr_atime(dir, hidden_dir_dentry->d_inode); ++ ++ dtopd(dentry)->state = UNMODIFIED; ++ dtohd(dentry) = hidden_dentry; ++ dtohd2(dentry) = hidden_sto_dentry; /* could be negative */ ++ ++ err = mini_fo_tri_interpose(hidden_dentry, ++ hidden_sto_dentry, ++ dentry, dir->i_sb, 1); ++ if (err) { ++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state2).\n"); ++ goto out_free; ++ } ++ goto out; ++ } ++ /* state 3, file has been newly created */ ++ if(hidden_sto_dentry && hidden_sto_dentry->d_inode && !del_flag) { ++ ++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode); ++ dtopd(dentry)->state = CREATED; ++ dtohd(dentry) = hidden_dentry; /* could be negative */ ++ dtohd2(dentry) = hidden_sto_dentry; ++ ++ err = mini_fo_tri_interpose(hidden_dentry, ++ hidden_sto_dentry, ++ dentry, dir->i_sb, 1); ++ if (err) { ++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state3).\n"); ++ goto out_free; ++ } ++ goto out; ++ } ++ ++ /* state 4, file has deleted and created again. */ ++ if(hidden_dentry && hidden_sto_dentry && ++ hidden_dentry->d_inode && ++ hidden_sto_dentry->d_inode && del_flag) { ++ ++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode); ++ dtopd(dentry)->state = DEL_REWRITTEN; ++ dtohd(dentry) = NULL; ++ dtohd2(dentry) = hidden_sto_dentry; ++ ++ err = mini_fo_tri_interpose(NULL, ++ hidden_sto_dentry, ++ dentry, dir->i_sb, 1); ++ if (err) { ++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state4).\n"); ++ goto out_free; ++ } ++ /* We will never need this dentry again, as the file has been ++ * deleted from base */ ++ dput(hidden_dentry); ++ goto out; ++ } ++ /* state 5, file has been deleted in base */ ++ if(hidden_dentry && hidden_sto_dentry && ++ hidden_dentry->d_inode && ++ !hidden_sto_dentry->d_inode && del_flag) { ++ ++ /* check which parents atime we need for updating */ ++ if(hidden_sto_dir_dentry->d_inode) ++ fist_copy_attr_atime(dir, ++ hidden_sto_dir_dentry->d_inode); ++ else ++ fist_copy_attr_atime(dir, ++ hidden_dir_dentry->d_inode); ++ ++ dtopd(dentry)->state = DELETED; ++ dtohd(dentry) = NULL; ++ dtohd2(dentry) = hidden_sto_dentry; ++ ++ /* add negative dentry to dcache to speed up lookups */ ++ d_add(dentry, NULL); ++ dput(hidden_dentry); ++ goto out; ++ } ++ /* state 6, file does not exist */ ++ if(((hidden_dentry && !hidden_dentry->d_inode) || ++ (hidden_sto_dentry && !hidden_sto_dentry->d_inode)) && !del_flag) ++ { ++ /* check which parents atime we need for updating */ ++ if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode) ++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode); ++ else ++ fist_copy_attr_atime(dir, hidden_dir_dentry->d_inode); ++ ++ dtopd(dentry)->state = NON_EXISTANT; ++ dtohd(dentry) = hidden_dentry; ++ dtohd2(dentry) = hidden_sto_dentry; ++ d_add(dentry, NULL); ++ goto out; ++ } ++ ++ /* if we get to here, were in an invalid state. bad. */ ++ printk(KERN_CRIT "mini_fo_lookup: ERROR, meta data corruption detected.\n"); ++ ++ /* end state checking */ ++ out_free: ++ d_drop(dentry); /* so that our bad dentry will get destroyed */ ++ kfree(dtopd(dentry)); ++ __dtopd(dentry) = NULL; /* be safe */ ++ ++ out_dput: ++ if(hidden_dentry) ++ dput(hidden_dentry); ++ if(hidden_sto_dentry) ++ dput(hidden_sto_dentry); /* drops usage count and marks for release */ ++ ++ out: ++ /* initalize wol if file exists and is directory */ ++ if(dentry->d_inode) { ++ if(S_ISDIR(dentry->d_inode->i_mode)) { ++ itopd(dentry->d_inode)->deleted_list_size = -1; ++ itopd(dentry->d_inode)->renamed_list_size = -1; ++ meta_build_lists(dentry); ++ } ++ } ++ return ERR_PTR(err); ++} ++ ++ ++STATIC int ++mini_fo_link(dentry_t *old_dentry, inode_t *dir, dentry_t *new_dentry) ++{ ++ int err; ++ dentry_t *hidden_old_dentry; ++ dentry_t *hidden_new_dentry; ++ dentry_t *hidden_dir_dentry; ++ ++ ++ check_mini_fo_dentry(old_dentry); ++ check_mini_fo_dentry(new_dentry); ++ check_mini_fo_inode(dir); ++ ++ /* no links to directorys and existing targets target allowed */ ++ if(S_ISDIR(old_dentry->d_inode->i_mode) || ++ is_mini_fo_existant(new_dentry)) { ++ err = -EPERM; ++ goto out; ++ } ++ ++ /* bring it directly from unmod to del_rew */ ++ if(dtost(old_dentry) == UNMODIFIED) { ++ err = nondir_unmod_to_mod(old_dentry, 1); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ err = meta_add_d_entry(old_dentry->d_parent, ++ old_dentry->d_name.name, ++ old_dentry->d_name.len); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ dput(dtohd(old_dentry)); ++ dtohd(old_dentry) = NULL; ++ dtost(old_dentry) = DEL_REWRITTEN; ++ } ++ ++ err = get_neg_sto_dentry(new_dentry); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ ++ hidden_old_dentry = dtohd2(old_dentry); ++ hidden_new_dentry = dtohd2(new_dentry); ++ ++ dget(hidden_old_dentry); ++ dget(hidden_new_dentry); ++ ++ /* was: hidden_dir_dentry = lock_parent(hidden_new_dentry); */ ++ hidden_dir_dentry = dget(hidden_new_dentry->d_parent); ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dir_dentry->d_inode->i_sem); ++#endif ++ ++ err = vfs_link(hidden_old_dentry, ++ hidden_dir_dentry->d_inode, ++ hidden_new_dentry); ++ if (err || !hidden_new_dentry->d_inode) ++ goto out_lock; ++ ++ dtost(new_dentry) = CREATED; ++ err = mini_fo_tri_interpose(NULL, hidden_new_dentry, new_dentry, dir->i_sb, 0); ++ if (err) ++ goto out_lock; ++ ++ fist_copy_attr_timesizes(dir, hidden_new_dentry->d_inode); ++ /* propagate number of hard-links */ ++ old_dentry->d_inode->i_nlink = itohi2(old_dentry->d_inode)->i_nlink; ++ ++ out_lock: ++ /* was: unlock_dir(hidden_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_dir_dentry); ++ ++ dput(hidden_new_dentry); ++ dput(hidden_old_dentry); ++ if (!new_dentry->d_inode) ++ d_drop(new_dentry); ++ ++ out: ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_unlink(inode_t *dir, dentry_t *dentry) ++{ ++ int err = 0; ++ ++ dget(dentry); ++ if(dtopd(dentry)->state == MODIFIED) { ++ err = nondir_mod_to_del(dentry); ++ goto out; ++ } ++ else if(dtopd(dentry)->state == UNMODIFIED) { ++ err = nondir_unmod_to_del(dentry); ++ goto out; ++ } ++ else if(dtopd(dentry)->state == CREATED) { ++ err = nondir_creat_to_del(dentry); ++ goto out; ++ } ++ else if(dtopd(dentry)->state == DEL_REWRITTEN) { ++ err = nondir_del_rew_to_del(dentry); ++ goto out; ++ } ++ ++ printk(KERN_CRIT "mini_fo_unlink: ERROR, invalid state detected.\n"); ++ ++ out: ++ fist_copy_attr_times(dir, itohi2(dentry->d_parent->d_inode)); ++ ++ if(!err) { ++ /* is this causing my pain? d_delete(dentry); */ ++ d_drop(dentry); ++ } ++ ++ dput(dentry); ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_symlink(inode_t *dir, dentry_t *dentry, const char *symname) ++{ ++ int err=0; ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ umode_t mode; ++#endif ++ ++ /* Fail if the symlink file exists */ ++ if(!(dtost(dentry) == DELETED || ++ dtost(dentry) == NON_EXISTANT)) { ++ err = -EEXIST; ++ goto out; ++ } ++ ++ err = get_neg_sto_dentry(dentry); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ dget(hidden_sto_dentry); ++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ mode = S_IALLUGO; ++ err = vfs_symlink(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, symname, mode); ++#else ++ err = vfs_symlink(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ symname); ++#endif ++ if (err || !hidden_sto_dentry->d_inode) ++ goto out_lock; ++ ++ if(dtost(dentry) == DELETED) { ++ dtost(dentry) = DEL_REWRITTEN; ++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } else if(dtost(dentry) == NON_EXISTANT) { ++ dtost(dentry) = CREATED; ++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode); ++ ++ out_lock: ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ ++ dput(hidden_sto_dentry); ++ if (!dentry->d_inode) ++ d_drop(dentry); ++ out: ++ return err; ++} ++ ++STATIC int ++mini_fo_mkdir(inode_t *dir, dentry_t *dentry, int mode) ++{ ++ int err; ++ ++ err = create_sto_dir(dentry, mode); ++ ++ check_mini_fo_dentry(dentry); ++ ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_rmdir(inode_t *dir, dentry_t *dentry) ++{ ++ int err = 0; ++ ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++ dentry_t *meta_dentry; ++ inode_t *hidden_sto_dir = NULL; ++ ++ check_mini_fo_dentry(dentry); ++ check_mini_fo_inode(dir); ++ ++ dget(dentry); ++ if(dtopd(dentry)->state == MODIFIED) { ++ /* XXX: disabled, because it does not bother to check files on ++ * the original filesystem - just a hack, but better than simply ++ * removing it without testing */ ++ err = -EINVAL; ++ goto out; ++ ++ hidden_sto_dir = itohi2(dir); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* was:hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ /* avoid destroying the hidden inode if the file is in use */ ++ dget(hidden_sto_dentry); ++ ++ /* Delete an old WOL file contained in the storage dir */ ++ meta_dentry = lookup_one_len(META_FILENAME, ++ hidden_sto_dentry, ++ strlen(META_FILENAME)); ++ if(meta_dentry->d_inode) { ++ err = vfs_unlink(hidden_sto_dentry->d_inode, meta_dentry); ++ dput(meta_dentry); ++ if(!err) ++ d_delete(meta_dentry); ++ } ++ ++ err = vfs_rmdir(hidden_sto_dir, hidden_sto_dentry); ++ dput(hidden_sto_dentry); ++ if(!err) ++ d_delete(hidden_sto_dentry); ++ ++ /* propagate number of hard-links */ ++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink; ++ ++ dput(dtohd(dentry)); ++ ++ dtohd(dentry) = NULL; ++ dtopd(dentry)->state = DELETED; ++ ++ /* carefull with R files */ ++ if( __meta_is_r_entry(dir, ++ dentry->d_name.name, ++ dentry->d_name.len) == 1) { ++ err = meta_remove_r_entry(dentry->d_parent, ++ dentry->d_name.name, ++ dentry->d_name.len); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: rmdir: meta_remove_r_entry failed.\n"); ++ goto out; ++ } ++ } ++ else { ++ /* ok, add deleted file to META */ ++ meta_add_d_entry(dentry->d_parent, ++ dentry->d_name.name, ++ dentry->d_name.len); ++ } ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ goto out; ++ } ++ else if(dtopd(dentry)->state == UNMODIFIED) { ++ /* XXX: simply adding it to the delete list here is fscking dangerous! ++ * as a temporary hack, i will disable rmdir on unmodified directories ++ * for now. ++ */ ++ err = -EINVAL; ++ goto out; ++ ++ err = get_neg_sto_dentry(dentry); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ ++ /* dput base dentry, this will relase the inode and free the ++ * dentry, as we will never need it again. */ ++ dput(dtohd(dentry)); ++ dtohd(dentry) = NULL; ++ dtopd(dentry)->state = DELETED; ++ ++ /* add deleted file to META-file */ ++ meta_add_d_entry(dentry->d_parent, ++ dentry->d_name.name, ++ dentry->d_name.len); ++ goto out; ++ } ++ else if(dtopd(dentry)->state == CREATED) { ++ hidden_sto_dir = itohi2(dir); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ /* avoid destroying the hidden inode if the file is in use */ ++ dget(hidden_sto_dentry); ++ ++ /* Delete an old WOL file contained in the storage dir */ ++ meta_dentry = lookup_one_len(META_FILENAME, ++ hidden_sto_dentry, ++ strlen(META_FILENAME)); ++ if(meta_dentry->d_inode) { ++ /* is this necessary? dget(meta_dentry); */ ++ err = vfs_unlink(hidden_sto_dentry->d_inode, ++ meta_dentry); ++ dput(meta_dentry); ++ if(!err) ++ d_delete(meta_dentry); ++ } ++ ++ err = vfs_rmdir(hidden_sto_dir, hidden_sto_dentry); ++ dput(hidden_sto_dentry); ++ if(!err) ++ d_delete(hidden_sto_dentry); ++ ++ /* propagate number of hard-links */ ++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink; ++ dtopd(dentry)->state = NON_EXISTANT; ++ ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ ++ goto out; ++ } ++ else if(dtopd(dentry)->state == DEL_REWRITTEN) { ++ hidden_sto_dir = itohi2(dir); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ /* avoid destroying the hidden inode if the file is in use */ ++ dget(hidden_sto_dentry); ++ ++ /* Delete an old WOL file contained in the storage dir */ ++ meta_dentry = lookup_one_len(META_FILENAME, ++ hidden_sto_dentry, ++ strlen(META_FILENAME)); ++ if(meta_dentry->d_inode) { ++ /* is this necessary? dget(meta_dentry); */ ++ err = vfs_unlink(hidden_sto_dentry->d_inode, ++ meta_dentry); ++ dput(meta_dentry); ++ if(!err) ++ d_delete(meta_dentry); ++ } ++ ++ err = vfs_rmdir(hidden_sto_dir, hidden_sto_dentry); ++ dput(hidden_sto_dentry); ++ if(!err) ++ d_delete(hidden_sto_dentry); ++ ++ /* propagate number of hard-links */ ++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink; ++ dtopd(dentry)->state = DELETED; ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ goto out; ++ } ++ ++ printk(KERN_CRIT "mini_fo_rmdir: ERROR, invalid state detected.\n"); ++ ++ out: ++ if(!err) { ++ d_drop(dentry); ++ } ++ ++ fist_copy_attr_times(dir, itohi2(dentry->d_parent->d_inode)); ++ dput(dentry); ++ ++ return err; ++} ++ ++ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++mini_fo_mknod(inode_t *dir, dentry_t *dentry, int mode, dev_t dev) ++#else ++mini_fo_mknod(inode_t *dir, dentry_t *dentry, int mode, int dev) ++#endif ++{ ++ int err = 0; ++ ++ check_mini_fo_dentry(dentry); ++ ++ err = create_sto_nod(dentry, mode, dev); ++ if(err) { ++ printk(KERN_CRIT "mini_fo_mknod: creating sto nod failed.\n"); ++ err = -EINVAL; ++ } ++ ++ check_mini_fo_dentry(dentry); ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_rename(inode_t *old_dir, dentry_t *old_dentry, ++ inode_t *new_dir, dentry_t *new_dentry) ++{ ++ /* dispatch */ ++ if(S_ISDIR(old_dentry->d_inode->i_mode)) ++ return rename_directory(old_dir, old_dentry, new_dir, new_dentry); ++ return rename_nondir(old_dir, old_dentry, new_dir, new_dentry); ++ ++} ++ ++int rename_directory(inode_t *old_dir, dentry_t *old_dentry, ++ inode_t *new_dir, dentry_t *new_dentry) ++{ ++ int err, bpath_len; ++ char *bpath; ++ ++ dentry_t *hidden_old_dentry; ++ dentry_t *hidden_new_dentry; ++ dentry_t *hidden_old_dir_dentry; ++ dentry_t *hidden_new_dir_dentry; ++ ++ err = 0; ++ bpath = NULL; ++ bpath_len = 0; ++ ++ /* this is a test, chuck out if it works */ ++ if(!(dtopd(new_dentry)->state == DELETED || ++ dtopd(new_dentry)->state == NON_EXISTANT)) { ++ printk(KERN_CRIT "mini_fo: rename_directory: \ ++ uh, ah, new_dentry not negative.\n"); ++ /* return -1; */ ++ } ++ ++ /* state = UNMODIFIED */ ++ if(dtopd(old_dentry)->state == UNMODIFIED) { ++ err = dir_unmod_to_mod(old_dentry); ++ if (err) ++ goto out; ++ } ++ ++ /* state = MODIFIED */ ++ if(dtopd(old_dentry)->state == MODIFIED) { ++ bpath = meta_check_r_entry(old_dentry->d_parent, ++ old_dentry->d_name.name, ++ old_dentry->d_name.len); ++ if(bpath) { ++ err = meta_remove_r_entry(old_dentry->d_parent, ++ old_dentry->d_name.name, ++ old_dentry->d_name.len); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: rename_directory:\ ++ meta_remove_r_entry \ ++ failed.\n"); ++ goto out; ++ } ++ err = meta_add_r_entry(new_dentry->d_parent, ++ bpath, ++ strlen(bpath), ++ new_dentry->d_name.name, ++ new_dentry->d_name.len); ++ kfree(bpath); ++ } ++ else {/* wol it */ ++ err = meta_add_d_entry(old_dentry->d_parent, ++ old_dentry->d_name.name, ++ old_dentry->d_name.len); ++ if (err) ++ goto out; ++ /* put it on rename list */ ++ err = get_mini_fo_bpath(old_dentry, ++ &bpath, ++ &bpath_len); ++ if (err) ++ goto out; ++ err = meta_add_r_entry(new_dentry->d_parent, ++ bpath, bpath_len, ++ new_dentry->d_name.name, ++ new_dentry->d_name.len); ++ if (err) ++ goto out; ++ } ++ /* no state change, MODIFIED stays MODIFIED */ ++ } ++ /* state = CREATED */ ++ if(dtopd(old_dentry)->state == CREATED || ++ dtopd(old_dentry)->state == DEL_REWRITTEN) { ++ if(dtohd(old_dentry)) ++ dput(dtohd(old_dentry)); ++ ++ if(dtopd(new_dentry)->state == DELETED) { ++ dtopd(old_dentry)->state = DEL_REWRITTEN; ++ dtohd(old_dentry) = NULL; ++ } ++ else if(dtopd(new_dentry)->state == NON_EXISTANT) { ++ dtopd(old_dentry)->state = CREATED; ++ /* steal new dentry's neg. base dentry */ ++ dtohd(old_dentry) = dtohd(new_dentry); ++ dtohd(new_dentry) = NULL; ++ } ++ } ++ if(dtopd(new_dentry)->state == UNMODIFIED || ++ dtopd(new_dentry)->state == NON_EXISTANT) { ++ err = get_neg_sto_dentry(new_dentry); ++ if(err) ++ goto out; ++ } ++ ++ /* now move sto file */ ++ hidden_old_dentry = dtohd2(old_dentry); ++ hidden_new_dentry = dtohd2(new_dentry); ++ ++ dget(hidden_old_dentry); ++ dget(hidden_new_dentry); ++ ++ hidden_old_dir_dentry = dget(hidden_old_dentry->d_parent); ++ hidden_new_dir_dentry = dget(hidden_new_dentry->d_parent); ++ double_lock(hidden_old_dir_dentry, hidden_new_dir_dentry); ++ ++ err = vfs_rename(hidden_old_dir_dentry->d_inode, hidden_old_dentry, ++ hidden_new_dir_dentry->d_inode, hidden_new_dentry); ++ if(err) ++ goto out_lock; ++ ++ fist_copy_attr_all(new_dir, hidden_new_dir_dentry->d_inode); ++ if (new_dir != old_dir) ++ fist_copy_attr_all(old_dir, ++ hidden_old_dir_dentry->d_inode); ++ ++ out_lock: ++ /* double_unlock will dput the new/old parent dentries ++ * whose refcnts were incremented via get_parent above. */ ++ double_unlock(hidden_old_dir_dentry, hidden_new_dir_dentry); ++ dput(hidden_new_dentry); ++ dput(hidden_old_dentry); ++ ++ out: ++ return err; ++} ++ ++int rename_nondir(inode_t *old_dir, dentry_t *old_dentry, ++ inode_t *new_dir, dentry_t *new_dentry) ++{ ++ int err=0; ++ ++ check_mini_fo_dentry(old_dentry); ++ check_mini_fo_dentry(new_dentry); ++ check_mini_fo_inode(old_dir); ++ check_mini_fo_inode(new_dir); ++ ++ /* state: UNMODIFIED */ ++ if(dtost(old_dentry) == UNMODIFIED) { ++ err = nondir_unmod_to_mod(old_dentry, 1); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ } ++ ++ /* the easy states */ ++ if(exists_in_storage(old_dentry)) { ++ ++ dentry_t *hidden_old_dentry; ++ dentry_t *hidden_new_dentry; ++ dentry_t *hidden_old_dir_dentry; ++ dentry_t *hidden_new_dir_dentry; ++ ++ /* if old file is MODIFIED, add it to the deleted_list */ ++ if(dtopd(old_dentry)->state == MODIFIED) { ++ meta_add_d_entry(old_dentry->d_parent, ++ old_dentry->d_name.name, ++ old_dentry->d_name.len); ++ ++ dput(dtohd(old_dentry)); ++ } ++ /* if old file is CREATED, we only release the base dentry */ ++ if(dtopd(old_dentry)->state == CREATED) { ++ if(dtohd(old_dentry)) ++ dput(dtohd(old_dentry)); ++ } ++ ++ /* now setup the new states (depends on new_dentry state) */ ++ /* new dentry state = MODIFIED */ ++ if(dtopd(new_dentry)->state == MODIFIED) { ++ meta_add_d_entry(new_dentry->d_parent, ++ new_dentry->d_name.name, ++ new_dentry->d_name.len); ++ ++ /* new dentry will be d_put'ed later by the vfs ++ * so don't do it here ++ * dput(dtohd(new_dentry)); ++ */ ++ dtohd(old_dentry) = NULL; ++ dtopd(old_dentry)->state = DEL_REWRITTEN; ++ } ++ /* new dentry state = UNMODIFIED */ ++ else if(dtopd(new_dentry)->state == UNMODIFIED) { ++ if(get_neg_sto_dentry(new_dentry)) ++ return -EINVAL; ++ ++ meta_add_d_entry(new_dentry->d_parent, ++ new_dentry->d_name.name, ++ new_dentry->d_name.len); ++ ++ /* is this right??? */ ++ /*dput(dtohd(new_dentry));*/ ++ dtohd(old_dentry) = NULL; ++ dtopd(old_dentry)->state = DEL_REWRITTEN; ++ } ++ /* new dentry state = CREATED */ ++ else if(dtopd(new_dentry)->state == CREATED) { ++ /* we keep the neg. base dentry (if exists) */ ++ dtohd(old_dentry) = dtohd(new_dentry); ++ /* ...and set it to Null, or we'll get ++ * dcache.c:345 if it gets dput twice... */ ++ dtohd(new_dentry) = NULL; ++ dtopd(old_dentry)->state = CREATED; ++ } ++ /* new dentry state = NON_EXISTANT */ ++ else if(dtopd(new_dentry)->state == NON_EXISTANT) { ++ if(get_neg_sto_dentry(new_dentry)) ++ return -EINVAL; ++ ++ /* we keep the neg. base dentry (if exists) */ ++ dtohd(old_dentry) = dtohd(new_dentry); ++ /* ...and set it to Null, or we'll get ++ * Dr. dcache.c:345 if it gets dput twice... */ ++ dtohd(new_dentry) = NULL; ++ dtopd(old_dentry)->state = CREATED; ++ } ++ /* new dentry state = DEL_REWRITTEN or DELETED */ ++ else if(dtopd(new_dentry)->state == DEL_REWRITTEN || ++ dtopd(new_dentry)->state == DELETED) { ++ dtohd(old_dentry) = NULL; ++ dtopd(old_dentry)->state = DEL_REWRITTEN; ++ } ++ else { /* not possible, uhh, ahh */ ++ printk(KERN_CRIT ++ "mini_fo: rename_reg_file: invalid state detected [1].\n"); ++ return -1; ++ } ++ ++ /* now we definitely have a sto file */ ++ hidden_old_dentry = dtohd2(old_dentry); ++ hidden_new_dentry = dtohd2(new_dentry); ++ ++ dget(hidden_old_dentry); ++ dget(hidden_new_dentry); ++ ++ hidden_old_dir_dentry = dget(hidden_old_dentry->d_parent); ++ hidden_new_dir_dentry = dget(hidden_new_dentry->d_parent); ++ double_lock(hidden_old_dir_dentry, hidden_new_dir_dentry); ++ ++ err = vfs_rename(hidden_old_dir_dentry->d_inode, ++ hidden_old_dentry, ++ hidden_new_dir_dentry->d_inode, ++ hidden_new_dentry); ++ if(err) ++ goto out_lock; ++ ++ fist_copy_attr_all(new_dir, hidden_new_dir_dentry->d_inode); ++ if (new_dir != old_dir) ++ fist_copy_attr_all(old_dir, hidden_old_dir_dentry->d_inode); ++ ++ out_lock: ++ /* double_unlock will dput the new/old parent dentries ++ * whose refcnts were incremented via get_parent above. ++ */ ++ double_unlock(hidden_old_dir_dentry, hidden_new_dir_dentry); ++ dput(hidden_new_dentry); ++ dput(hidden_old_dentry); ++ out: ++ return err; ++ } ++ else { /* invalid state */ ++ printk(KERN_CRIT "mini_fo: rename_reg_file: ERROR: invalid state detected [2].\n"); ++ return -1; ++ } ++} ++ ++ ++STATIC int ++mini_fo_readlink(dentry_t *dentry, char *buf, int bufsiz) ++{ ++ int err=0; ++ dentry_t *hidden_dentry = NULL; ++ ++ if(dtohd2(dentry) && dtohd2(dentry)->d_inode) { ++ hidden_dentry = dtohd2(dentry); ++ } else if(dtohd(dentry) && dtohd(dentry)->d_inode) { ++ hidden_dentry = dtohd(dentry); ++ } else { ++ goto out; ++ } ++ ++ if (!hidden_dentry->d_inode->i_op || ++ !hidden_dentry->d_inode->i_op->readlink) { ++ err = -EINVAL; goto out; ++ } ++ ++ err = hidden_dentry->d_inode->i_op->readlink(hidden_dentry, ++ buf, ++ bufsiz); ++ if (err > 0) ++ fist_copy_attr_atime(dentry->d_inode, hidden_dentry->d_inode); ++ ++ out: ++ return err; ++} ++ ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13) ++static int mini_fo_follow_link(dentry_t *dentry, struct nameidata *nd) ++#else ++static void* mini_fo_follow_link(dentry_t *dentry, struct nameidata *nd) ++#endif ++{ ++ char *buf; ++ int len = PAGE_SIZE, err; ++ mm_segment_t old_fs; ++ ++ /* in 2.6 this is freed by mini_fo_put_link called by __do_follow_link */ ++ buf = kmalloc(len, GFP_KERNEL); ++ if (!buf) { ++ err = -ENOMEM; ++ goto out; ++ } ++ ++ /* read the symlink, and then we will follow it */ ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ err = dentry->d_inode->i_op->readlink(dentry, buf, len); ++ set_fs(old_fs); ++ if (err < 0) { ++ kfree(buf); ++ buf = NULL; ++ goto out; ++ } ++ buf[err] = 0; ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ nd_set_link(nd, buf); ++ err = 0; ++#else ++ err = vfs_follow_link(nd, buf); ++#endif ++ ++ out: ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ kfree(buf); ++#endif ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13) ++ return err; ++#else ++ return ERR_PTR(err); ++#endif ++} ++ ++STATIC ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13) ++void mini_fo_put_link(struct dentry *dentry, struct nameidata *nd) ++#else ++void mini_fo_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie) ++#endif ++{ ++ char *link; ++ link = nd_get_link(nd); ++ kfree(link); ++} ++#endif ++ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++mini_fo_permission(inode_t *inode, int mask, struct nameidata *nd) ++#else ++mini_fo_permission(inode_t *inode, int mask) ++#endif ++{ ++ inode_t *hidden_inode; ++ int mode; ++ int err; ++ ++ if(itohi2(inode)) { ++ hidden_inode = itohi2(inode); ++ } else { ++ hidden_inode = itohi(inode); ++ } ++ mode = inode->i_mode; ++ ++ /* not really needed, as permission handles everything: ++ * err = vfs_permission(inode, mask); ++ * if (err) ++ * goto out; ++ */ ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ err = permission(hidden_inode, mask, nd); ++#else ++ err = permission(hidden_inode, mask); ++#endif ++ ++ /* out: */ ++ return err; ++} ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++STATIC int ++mini_fo_inode_revalidate(dentry_t *dentry) ++{ ++ int err = 0; ++ dentry_t *hidden_dentry; ++ inode_t *hidden_inode; ++ ++ ASSERT(dentry->d_inode); ++ ASSERT(itopd(dentry->d_inode)); ++ ++ if(itohi2(dentry->d_inode)) { ++ hidden_dentry = dtohd2(dentry); ++ hidden_inode = hidden_dentry->d_inode; ++ } else if(itohi(dentry->d_inode)) { ++ hidden_dentry = dtohd(dentry); ++ hidden_inode = hidden_dentry->d_inode; ++ } else { ++ printk(KERN_CRIT "mini_fo_inode_revalidate: ERROR, invalid state detected.\n"); ++ err = -ENOENT; ++ goto out; ++ } ++ if (hidden_inode && hidden_inode->i_op && hidden_inode->i_op->revalidate){ ++ err = hidden_inode->i_op->revalidate(hidden_dentry); ++ if (err) ++ goto out; ++ } ++ fist_copy_attr_all(dentry->d_inode, hidden_inode); ++ out: ++ return err; ++} ++#endif ++ ++STATIC int ++mini_fo_setattr(dentry_t *dentry, struct iattr *ia) ++{ ++ int err = 0; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(!is_mini_fo_existant(dentry)) { ++ printk(KERN_CRIT "mini_fo_setattr: ERROR, invalid state detected [1].\n"); ++ goto out; ++ } ++ ++ if(dtost(dentry) == UNMODIFIED) { ++ if(!IS_COPY_FLAG(ia->ia_valid)) ++ goto out; /* we ignore these changes to base */ ++ ++ if(S_ISDIR(dentry->d_inode->i_mode)) { ++ err = dir_unmod_to_mod(dentry); ++ } else { ++ /* we copy contents if file is not beeing truncated */ ++ if(S_ISREG(dentry->d_inode->i_mode) && ++ !(ia->ia_size == 0 && (ia->ia_valid & ATTR_SIZE))) { ++ err = nondir_unmod_to_mod(dentry, 1); ++ } else ++ err = nondir_unmod_to_mod(dentry, 0); ++ } ++ if(err) { ++ err = -EINVAL; ++ printk(KERN_CRIT "mini_fo_setattr: ERROR changing states.\n"); ++ goto out; ++ } ++ } ++ if(!exists_in_storage(dentry)) { ++ printk(KERN_CRIT "mini_fo_setattr: ERROR, invalid state detected [2].\n"); ++ err = -EINVAL; ++ goto out; ++ } ++ ASSERT(dentry->d_inode); ++ ASSERT(dtohd2(dentry)); ++ ASSERT(itopd(dentry->d_inode)); ++ ASSERT(itohi2(dentry->d_inode)); ++ ++ err = notify_change(dtohd2(dentry), ia); ++ fist_copy_attr_all(dentry->d_inode, itohi2(dentry->d_inode)); ++ out: ++ return err; ++} ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++STATIC int ++mini_fo_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) ++{ ++ int err = 0; ++ dentry_t *hidden_dentry; ++ ++ ASSERT(dentry->d_inode); ++ ASSERT(itopd(dentry->d_inode)); ++ ++ if(itohi2(dentry->d_inode)) { ++ hidden_dentry = dtohd2(dentry); ++ } else if(itohi(dentry->d_inode)) { ++ hidden_dentry = dtohd(dentry); ++ } else { ++ printk(KERN_CRIT "mini_fo_getattr: ERROR, invalid state detected.\n"); ++ err = -ENOENT; ++ goto out; ++ } ++ fist_copy_attr_all(dentry->d_inode, hidden_dentry->d_inode); ++ ++ ASSERT(hidden_dentry); ++ ASSERT(hidden_dentry->d_inode); ++ ASSERT(hidden_dentry->d_inode->i_op); ++ ++ generic_fillattr(dentry->d_inode, stat); ++ if (!stat->blksize) { ++ struct super_block *s = hidden_dentry->d_inode->i_sb; ++ unsigned blocks; ++ blocks = (stat->size+s->s_blocksize-1) >> s->s_blocksize_bits; ++ stat->blocks = (s->s_blocksize / 512) * blocks; ++ stat->blksize = s->s_blocksize; ++ } ++ out: ++ return err; ++} ++#endif ++ ++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) ++#if 0 /* no xattr_alloc() and xattr_free() */ ++/* This is lifted from fs/xattr.c */ ++static void * ++xattr_alloc(size_t size, size_t limit) ++{ ++ void *ptr; ++ ++ if (size > limit) ++ return ERR_PTR(-E2BIG); ++ ++ if (!size) /* size request, no buffer is needed */ ++ return NULL; ++ else if (size <= PAGE_SIZE) ++ ptr = kmalloc((unsigned long) size, GFP_KERNEL); ++ else ++ ptr = vmalloc((unsigned long) size); ++ if (!ptr) ++ return ERR_PTR(-ENOMEM); ++ return ptr; ++} ++ ++static void ++xattr_free(void *ptr, size_t size) ++{ ++ if (!size) /* size request, no buffer was needed */ ++ return; ++ else if (size <= PAGE_SIZE) ++ kfree(ptr); ++ else ++ vfree(ptr); ++} ++#endif /* no xattr_alloc() and xattr_free() */ ++ ++/* BKL held by caller. ++ * dentry->d_inode->i_sem down ++ */ ++STATIC int ++mini_fo_getxattr(struct dentry *dentry, const char *name, void *value, size_t size) { ++ struct dentry *hidden_dentry = NULL; ++ int err = -EOPNOTSUPP; ++ /* Define these anyway so we don't need as much ifdef'ed code. */ ++ char *encoded_name = NULL; ++ char *encoded_value = NULL; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(exists_in_storage(dentry)) ++ hidden_dentry = dtohd2(dentry); ++ else ++ hidden_dentry = dtohd(dentry); ++ ++ ASSERT(hidden_dentry); ++ ASSERT(hidden_dentry->d_inode); ++ ASSERT(hidden_dentry->d_inode->i_op); ++ ++ if (hidden_dentry->d_inode->i_op->getxattr) { ++ encoded_name = (char *)name; ++ encoded_value = (char *)value; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dentry->d_inode->i_sem); ++#endif ++ /* lock_kernel() already done by caller. */ ++ err = hidden_dentry->d_inode->i_op->getxattr(hidden_dentry, encoded_name, encoded_value, size); ++ /* unlock_kernel() will be done by caller. */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dentry->d_inode->i_sem); ++#endif ++ } ++ return err; ++} ++ ++/* BKL held by caller. ++ * dentry->d_inode->i_sem down ++ */ ++STATIC int ++#if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,21) \ ++ && LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,23)) \ ++ || LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) ++mini_fo_setxattr(struct dentry *dentry, const char *name, ++ const void *value, size_t size, int flags) ++#else ++mini_fo_setxattr(struct dentry *dentry, const char *name, ++ void *value, size_t size, int flags) ++#endif ++ ++{ ++ struct dentry *hidden_dentry = NULL; ++ int err = -EOPNOTSUPP; ++ ++ /* Define these anyway, so we don't have as much ifdef'ed code. */ ++ char *encoded_value = NULL; ++ char *encoded_name = NULL; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(exists_in_storage(dentry)) ++ hidden_dentry = dtohd2(dentry); ++ else ++ hidden_dentry = dtohd(dentry); ++ ++ ASSERT(hidden_dentry); ++ ASSERT(hidden_dentry->d_inode); ++ ASSERT(hidden_dentry->d_inode->i_op); ++ ++ if (hidden_dentry->d_inode->i_op->setxattr) { ++ encoded_name = (char *)name; ++ encoded_value = (char *)value; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dentry->d_inode->i_sem); ++#endif ++ /* lock_kernel() already done by caller. */ ++ err = hidden_dentry->d_inode->i_op->setxattr(hidden_dentry, encoded_name, encoded_value, size, flags); ++ /* unlock_kernel() will be done by caller. */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dentry->d_inode->i_sem); ++#endif ++ } ++ return err; ++} ++ ++/* BKL held by caller. ++ * dentry->d_inode->i_sem down ++ */ ++STATIC int ++mini_fo_removexattr(struct dentry *dentry, const char *name) { ++ struct dentry *hidden_dentry = NULL; ++ int err = -EOPNOTSUPP; ++ char *encoded_name; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(exists_in_storage(dentry)) ++ hidden_dentry = dtohd2(dentry); ++ else ++ hidden_dentry = dtohd(dentry); ++ ++ ASSERT(hidden_dentry); ++ ASSERT(hidden_dentry->d_inode); ++ ASSERT(hidden_dentry->d_inode->i_op); ++ ++ if (hidden_dentry->d_inode->i_op->removexattr) { ++ encoded_name = (char *)name; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dentry->d_inode->i_sem); ++#endif ++ /* lock_kernel() already done by caller. */ ++ err = hidden_dentry->d_inode->i_op->removexattr(hidden_dentry, encoded_name); ++ /* unlock_kernel() will be done by caller. */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dentry->d_inode->i_sem); ++#endif ++ } ++ return err; ++} ++ ++/* BKL held by caller. ++ * dentry->d_inode->i_sem down ++ */ ++STATIC int ++mini_fo_listxattr(struct dentry *dentry, char *list, size_t size) { ++ struct dentry *hidden_dentry = NULL; ++ int err = -EOPNOTSUPP; ++ char *encoded_list = NULL; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(exists_in_storage(dentry)) ++ hidden_dentry = dtohd2(dentry); ++ else ++ hidden_dentry = dtohd(dentry); ++ ++ ASSERT(hidden_dentry); ++ ASSERT(hidden_dentry->d_inode); ++ ASSERT(hidden_dentry->d_inode->i_op); ++ ++ if (hidden_dentry->d_inode->i_op->listxattr) { ++ encoded_list = list; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_dentry->d_inode->i_sem); ++#endif ++ /* lock_kernel() already done by caller. */ ++ err = hidden_dentry->d_inode->i_op->listxattr(hidden_dentry, encoded_list, size); ++ /* unlock_kernel() will be done by caller. */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_dentry->d_inode->i_sem); ++#endif ++ } ++ return err; ++} ++# endif /* defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) */ ++ ++struct inode_operations mini_fo_symlink_iops = ++ { ++ readlink: mini_fo_readlink, ++ follow_link: mini_fo_follow_link, ++ /* mk: permission: mini_fo_permission, */ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ revalidate: mini_fo_inode_revalidate, ++#endif ++ setattr: mini_fo_setattr, ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ getattr: mini_fo_getattr, ++ put_link: mini_fo_put_link, ++#endif ++ ++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) ++ setxattr: mini_fo_setxattr, ++ getxattr: mini_fo_getxattr, ++ listxattr: mini_fo_listxattr, ++ removexattr: mini_fo_removexattr ++# endif /* defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) */ ++ }; ++ ++struct inode_operations mini_fo_dir_iops = ++ { ++ create: mini_fo_create, ++ lookup: mini_fo_lookup, ++ link: mini_fo_link, ++ unlink: mini_fo_unlink, ++ symlink: mini_fo_symlink, ++ mkdir: mini_fo_mkdir, ++ rmdir: mini_fo_rmdir, ++ mknod: mini_fo_mknod, ++ rename: mini_fo_rename, ++ /* no readlink/follow_link for non-symlinks */ ++ // off because we have setattr ++ // truncate: mini_fo_truncate, ++ /* mk:permission: mini_fo_permission, */ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ revalidate: mini_fo_inode_revalidate, ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ getattr: mini_fo_getattr, ++#endif ++ setattr: mini_fo_setattr, ++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) ++ setxattr: mini_fo_setxattr, ++ getxattr: mini_fo_getxattr, ++ listxattr: mini_fo_listxattr, ++ removexattr: mini_fo_removexattr ++# endif /* XATTR && LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) */ ++ }; ++ ++struct inode_operations mini_fo_main_iops = ++ { ++ /* permission: mini_fo_permission, */ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ revalidate: mini_fo_inode_revalidate, ++#endif ++ setattr: mini_fo_setattr, ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ getattr: mini_fo_getattr, ++#endif ++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) ++ setxattr: mini_fo_setxattr, ++ getxattr: mini_fo_getxattr, ++ listxattr: mini_fo_listxattr, ++ removexattr: mini_fo_removexattr ++# endif /* XATTR && LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) */ ++ }; +diff -urN linux-2.6.21.1.old/fs/mini_fo/main.c linux-2.6.21.1.dev/fs/mini_fo/main.c +--- linux-2.6.21.1.old/fs/mini_fo/main.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/main.c 2007-05-26 21:01:26.164329720 +0200 +@@ -0,0 +1,423 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif ++ ++#include "fist.h" ++#include "mini_fo.h" ++#include <linux/module.h> ++ ++/* This definition must only appear after we include <linux/module.h> */ ++#ifndef MODULE_LICENSE ++# define MODULE_LICENSE(bison) ++#endif /* not MODULE_LICENSE */ ++ ++/* ++ * This is the mini_fo tri interpose function, which extends the ++ * functionality of the regular interpose by interposing a higher ++ * level inode on top of two lower level ones: the base filesystem ++ * inode and the storage filesystem inode. ++ * ++ * sb we pass is mini_fo's super_block ++ */ ++int ++mini_fo_tri_interpose(dentry_t *hidden_dentry, ++ dentry_t *hidden_sto_dentry, ++ dentry_t *dentry, super_block_t *sb, int flag) ++{ ++ inode_t *hidden_inode = NULL; ++ inode_t *hidden_sto_inode = NULL; /* store corresponding storage inode */ ++ int err = 0; ++ inode_t *inode; ++ ++ /* Pointer to hidden_sto_inode if exists, else to hidden_inode. ++ * This is used to copy the attributes of the correct inode. */ ++ inode_t *master_inode; ++ ++ if(hidden_dentry) ++ hidden_inode = hidden_dentry->d_inode; ++ if(hidden_sto_dentry) ++ hidden_sto_inode = hidden_sto_dentry->d_inode; ++ ++ ASSERT(dentry->d_inode == NULL); ++ ++ /* mk: One of the inodes associated with the dentrys is likely to ++ * be NULL, so carefull: ++ */ ++ ASSERT((hidden_inode != NULL) || (hidden_sto_inode != NULL)); ++ ++ if(hidden_sto_inode) ++ master_inode = hidden_sto_inode; ++ else ++ master_inode = hidden_inode; ++ ++ /* ++ * We allocate our new inode below, by calling iget. ++ * iget will call our read_inode which will initialize some ++ * of the new inode's fields ++ */ ++ ++ /* ++ * original: inode = iget(sb, hidden_inode->i_ino); ++ */ ++ inode = iget(sb, iunique(sb, 25)); ++ if (!inode) { ++ err = -EACCES; /* should be impossible??? */ ++ goto out; ++ } ++ ++ /* ++ * interpose the inode if not already interposed ++ * this is possible if the inode is being reused ++ * XXX: what happens if we get_empty_inode() but there's another already? ++ * for now, ASSERT() that this can't happen; fix later. ++ */ ++ if (itohi(inode) != NULL) { ++ printk(KERN_CRIT "mini_fo_tri_interpose: itohi(inode) != NULL.\n"); ++ } ++ if (itohi2(inode) != NULL) { ++ printk(KERN_CRIT "mini_fo_tri_interpose: itohi2(inode) != NULL.\n"); ++ } ++ ++ /* mk: Carefull, igrab can't handle NULL inodes (ok, why should it?), so ++ * we need to check here: ++ */ ++ if(hidden_inode) ++ itohi(inode) = igrab(hidden_inode); ++ else ++ itohi(inode) = NULL; ++ ++ if(hidden_sto_inode) ++ itohi2(inode) = igrab(hidden_sto_inode); ++ else ++ itohi2(inode) = NULL; ++ ++ ++ /* Use different set of inode ops for symlinks & directories*/ ++ if (S_ISLNK(master_inode->i_mode)) ++ inode->i_op = &mini_fo_symlink_iops; ++ else if (S_ISDIR(master_inode->i_mode)) ++ inode->i_op = &mini_fo_dir_iops; ++ ++ /* Use different set of file ops for directories */ ++ if (S_ISDIR(master_inode->i_mode)) ++ inode->i_fop = &mini_fo_dir_fops; ++ ++ /* properly initialize special inodes */ ++ if (S_ISBLK(master_inode->i_mode) || S_ISCHR(master_inode->i_mode) || ++ S_ISFIFO(master_inode->i_mode) || S_ISSOCK(master_inode->i_mode)) { ++ init_special_inode(inode, master_inode->i_mode, master_inode->i_rdev); ++ } ++ ++ /* Fix our inode's address operations to that of the lower inode */ ++ if (inode->i_mapping->a_ops != master_inode->i_mapping->a_ops) { ++ inode->i_mapping->a_ops = master_inode->i_mapping->a_ops; ++ } ++ ++ /* only (our) lookup wants to do a d_add */ ++ if (flag) ++ d_add(dentry, inode); ++ else ++ d_instantiate(dentry, inode); ++ ++ ASSERT(dtopd(dentry) != NULL); ++ ++ /* all well, copy inode attributes */ ++ fist_copy_attr_all(inode, master_inode); ++ ++ out: ++ return err; ++} ++ ++/* parse mount options "base=" and "sto=" */ ++dentry_t * ++mini_fo_parse_options(super_block_t *sb, char *options) ++{ ++ dentry_t *hidden_root = ERR_PTR(-EINVAL); ++ dentry_t *hidden_root2 = ERR_PTR(-EINVAL); ++ struct nameidata nd, nd2; ++ char *name, *tmp, *end; ++ int err = 0; ++ ++ /* We don't want to go off the end of our arguments later on. */ ++ for (end = options; *end; end++); ++ ++ while (options < end) { ++ tmp = options; ++ while (*tmp && *tmp != ',') ++ tmp++; ++ *tmp = '\0'; ++ if (!strncmp("base=", options, 5)) { ++ name = options + 5; ++ printk(KERN_INFO "mini_fo: using base directory: %s\n", name); ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ if (path_init(name, LOOKUP_FOLLOW, &nd)) ++ err = path_walk(name, &nd); ++#else ++ err = path_lookup(name, LOOKUP_FOLLOW, &nd); ++#endif ++ if (err) { ++ printk(KERN_CRIT "mini_fo: error accessing hidden directory '%s'\n", name); ++ hidden_root = ERR_PTR(err); ++ goto out; ++ } ++ hidden_root = nd.dentry; ++ stopd(sb)->base_dir_dentry = nd.dentry; ++ stopd(sb)->hidden_mnt = nd.mnt; ++ ++ } else if(!strncmp("sto=", options, 4)) { ++ /* parse the storage dir */ ++ name = options + 4; ++ printk(KERN_INFO "mini_fo: using storage directory: %s\n", name); ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ if(path_init(name, LOOKUP_FOLLOW, &nd2)) ++ err = path_walk(name, &nd2); ++#else ++ err = path_lookup(name, LOOKUP_FOLLOW, &nd2); ++#endif ++ if(err) { ++ printk(KERN_CRIT "mini_fo: error accessing hidden storage directory '%s'\n", name); ++ ++ hidden_root2 = ERR_PTR(err); ++ goto out; ++ } ++ hidden_root2 = nd2.dentry; ++ stopd(sb)->storage_dir_dentry = nd2.dentry; ++ stopd(sb)->hidden_mnt2 = nd2.mnt; ++ stohs2(sb) = hidden_root2->d_sb; ++ ++ /* validate storage dir, this is done in ++ * mini_fo_read_super for the base directory. ++ */ ++ if (IS_ERR(hidden_root2)) { ++ printk(KERN_WARNING "mini_fo_parse_options: storage dentry lookup failed (err = %ld)\n", PTR_ERR(hidden_root2)); ++ goto out; ++ } ++ if (!hidden_root2->d_inode) { ++ printk(KERN_WARNING "mini_fo_parse_options: no storage dir to interpose on.\n"); ++ goto out; ++ } ++ stohs2(sb) = hidden_root2->d_sb; ++ } else { ++ printk(KERN_WARNING "mini_fo: unrecognized option '%s'\n", options); ++ hidden_root = ERR_PTR(-EINVAL); ++ goto out; ++ } ++ options = tmp + 1; ++ } ++ ++ out: ++ if(IS_ERR(hidden_root2)) ++ return hidden_root2; ++ return hidden_root; ++} ++ ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++static int ++#else ++super_block_t * ++#endif ++mini_fo_read_super(super_block_t *sb, void *raw_data, int silent) ++{ ++ dentry_t *hidden_root; ++ int err = 0; ++ ++ if (!raw_data) { ++ printk(KERN_WARNING "mini_fo_read_super: missing argument\n"); ++ err = -EINVAL; ++ goto out; ++ } ++ /* ++ * Allocate superblock private data ++ */ ++ __stopd(sb) = kmalloc(sizeof(struct mini_fo_sb_info), GFP_KERNEL); ++ if (!stopd(sb)) { ++ printk(KERN_WARNING "%s: out of memory\n", __FUNCTION__); ++ err = -ENOMEM; ++ goto out; ++ } ++ stohs(sb) = NULL; ++ ++ hidden_root = mini_fo_parse_options(sb, raw_data); ++ if (IS_ERR(hidden_root)) { ++ printk(KERN_WARNING "mini_fo_read_super: lookup_dentry failed (err = %ld)\n", PTR_ERR(hidden_root)); ++ err = PTR_ERR(hidden_root); ++ goto out_free; ++ } ++ if (!hidden_root->d_inode) { ++ printk(KERN_WARNING "mini_fo_read_super: no directory to interpose on\n"); ++ goto out_free; ++ } ++ stohs(sb) = hidden_root->d_sb; ++ ++ /* ++ * Linux 2.4.2-ac3 and beyond has code in ++ * mm/filemap.c:generic_file_write() that requires sb->s_maxbytes ++ * to be populated. If not set, all write()s under that sb will ++ * return 0. ++ * ++ * Linux 2.4.4+ automatically sets s_maxbytes to MAX_NON_LFS; ++ * the filesystem should override it only if it supports LFS. ++ */ ++ /* non-SCA code is good to go with LFS */ ++ sb->s_maxbytes = hidden_root->d_sb->s_maxbytes; ++ ++ sb->s_op = &mini_fo_sops; ++ /* ++ * we can't use d_alloc_root if we want to use ++ * our own interpose function unchanged, ++ * so we simply replicate *most* of the code in d_alloc_root here ++ */ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ sb->s_root = d_alloc(NULL, &(const struct qstr) { "/", 1, 0 }); ++#else ++ sb->s_root = d_alloc(NULL, &(const struct qstr){hash: 0, name: "/", len : 1}); ++#endif ++ if (IS_ERR(sb->s_root)) { ++ printk(KERN_WARNING "mini_fo_read_super: d_alloc failed\n"); ++ err = -ENOMEM; ++ goto out_dput; ++ } ++ ++ sb->s_root->d_op = &mini_fo_dops; ++ sb->s_root->d_sb = sb; ++ sb->s_root->d_parent = sb->s_root; ++ ++ /* link the upper and lower dentries */ ++ __dtopd(sb->s_root) = (struct mini_fo_dentry_info *) ++ kmalloc(sizeof(struct mini_fo_dentry_info), GFP_KERNEL); ++ if (!dtopd(sb->s_root)) { ++ err = -ENOMEM; ++ goto out_dput2; ++ } ++ dtopd(sb->s_root)->state = MODIFIED; ++ dtohd(sb->s_root) = hidden_root; ++ ++ /* fanout relevant, interpose on storage root dentry too */ ++ dtohd2(sb->s_root) = stopd(sb)->storage_dir_dentry; ++ ++ /* ...and call tri-interpose to interpose root dir inodes ++ * if (mini_fo_interpose(hidden_root, sb->s_root, sb, 0)) ++ */ ++ if(mini_fo_tri_interpose(hidden_root, dtohd2(sb->s_root), sb->s_root, sb, 0)) ++ goto out_dput2; ++ ++ /* initalize the wol list */ ++ itopd(sb->s_root->d_inode)->deleted_list_size = -1; ++ itopd(sb->s_root->d_inode)->renamed_list_size = -1; ++ meta_build_lists(sb->s_root); ++ ++ goto out; ++ ++ out_dput2: ++ dput(sb->s_root); ++ out_dput: ++ dput(hidden_root); ++ dput(dtohd2(sb->s_root)); /* release the hidden_sto_dentry too */ ++ out_free: ++ kfree(stopd(sb)); ++ __stopd(sb) = NULL; ++ out: ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ return err; ++#else ++ if (err) { ++ return ERR_PTR(err); ++ } else { ++ return sb; ++ } ++#endif ++} ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++static int mini_fo_get_sb(struct file_system_type *fs_type, ++ int flags, const char *dev_name, ++ void *raw_data, struct vfsmount *mnt) ++{ ++ return get_sb_nodev(fs_type, flags, raw_data, mini_fo_read_super, mnt); ++} ++#else ++static struct super_block *mini_fo_get_sb(struct file_system_type *fs_type, ++ int flags, const char *dev_name, ++ void *raw_data) ++{ ++ return get_sb_nodev(fs_type, flags, raw_data, mini_fo_read_super); ++} ++#endif ++ ++void mini_fo_kill_block_super(struct super_block *sb) ++{ ++ generic_shutdown_super(sb); ++ /* ++ * XXX: BUG: Halcrow: Things get unstable sometime after this point: ++ * lib/rwsem-spinlock.c:127: spin_is_locked on uninitialized ++ * fs/fs-writeback.c:402: spin_lock(fs/super.c:a0381828) already ++ * locked by fs/fs-writeback.c/402 ++ * ++ * Apparently, someone's not releasing a lock on sb_lock... ++ */ ++} ++ ++static struct file_system_type mini_fo_fs_type = { ++ .owner = THIS_MODULE, ++ .name = "mini_fo", ++ .get_sb = mini_fo_get_sb, ++ .kill_sb = mini_fo_kill_block_super, ++ .fs_flags = 0, ++}; ++ ++ ++#else ++static DECLARE_FSTYPE(mini_fo_fs_type, "mini_fo", mini_fo_read_super, 0); ++#endif ++ ++static int __init init_mini_fo_fs(void) ++{ ++ printk("Registering mini_fo version $Id$\n"); ++ return register_filesystem(&mini_fo_fs_type); ++} ++static void __exit exit_mini_fo_fs(void) ++{ ++ printk("Unregistering mini_fo version $Id$\n"); ++ unregister_filesystem(&mini_fo_fs_type); ++} ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++EXPORT_NO_SYMBOLS; ++#endif ++ ++MODULE_AUTHOR("Erez Zadok <ezk@cs.sunysb.edu>"); ++MODULE_DESCRIPTION("FiST-generated mini_fo filesystem"); ++MODULE_LICENSE("GPL"); ++ ++/* MODULE_PARM(fist_debug_var, "i"); */ ++/* MODULE_PARM_DESC(fist_debug_var, "Debug level"); */ ++ ++module_init(init_mini_fo_fs) ++module_exit(exit_mini_fo_fs) +diff -urN linux-2.6.21.1.old/fs/mini_fo/Makefile linux-2.6.21.1.dev/fs/mini_fo/Makefile +--- linux-2.6.21.1.old/fs/mini_fo/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/Makefile 2007-05-26 21:01:26.164329720 +0200 +@@ -0,0 +1,17 @@ ++# ++# Makefile for mini_fo 2.4 and 2.6 Linux kernels ++# ++# Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++# ++# This program is free software; you can redistribute it and/or ++# modify it under the terms of the GNU General Public License ++# as published by the Free Software Foundation; either version ++# 2 of the License, or (at your option) any later version. ++# ++ ++obj-$(CONFIG_MINI_FO) := mini_fo.o ++mini_fo-objs := meta.o dentry.o file.o inode.o main.o super.o state.o aux.o ++ ++# dependencies ++${mini_fo-objs}: mini_fo.h fist.h ++ +diff -urN linux-2.6.21.1.old/fs/mini_fo/meta.c linux-2.6.21.1.dev/fs/mini_fo/meta.c +--- linux-2.6.21.1.old/fs/mini_fo/meta.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/meta.c 2007-05-26 21:01:26.166329416 +0200 +@@ -0,0 +1,1000 @@ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif /* HAVE_CONFIG_H */ ++#include "fist.h" ++#include "mini_fo.h" ++ ++int meta_build_lists(dentry_t *dentry) ++{ ++ struct mini_fo_inode_info *inode_info; ++ ++ dentry_t *meta_dentry = 0; ++ file_t *meta_file = 0; ++ mm_segment_t old_fs; ++ void *buf; ++ ++ int bytes, len; ++ struct vfsmount *meta_mnt; ++ char *entry; ++ ++ inode_info = itopd(dentry->d_inode); ++ if(!(inode_info->deleted_list_size == -1 && ++ inode_info->renamed_list_size == -1)) { ++ printk(KERN_CRIT "mini_fo: meta_build_lists: \ ++ Error, list(s) not virgin.\n"); ++ return -1; ++ } ++ ++ /* init our meta lists */ ++ INIT_LIST_HEAD(&inode_info->deleted_list); ++ inode_info->deleted_list_size = 0; ++ ++ INIT_LIST_HEAD(&inode_info->renamed_list); ++ inode_info->renamed_list_size = 0; ++ ++ /* might there be a META-file? */ ++ if(dtohd2(dentry) && dtohd2(dentry)->d_inode) { ++ meta_dentry = lookup_one_len(META_FILENAME, ++ dtohd2(dentry), ++ strlen(META_FILENAME)); ++ if(!meta_dentry->d_inode) { ++ dput(meta_dentry); ++ goto out_ok; ++ } ++ /* $%& err, is this correct? */ ++ meta_mnt = stopd(dentry->d_inode->i_sb)->hidden_mnt2; ++ mntget(meta_mnt); ++ ++ ++ /* open META-file for reading */ ++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x0); ++ if(!meta_file || IS_ERR(meta_file)) { ++ printk(KERN_CRIT "mini_fo: meta_build_lists: \ ++ ERROR opening META file.\n"); ++ goto out_err; ++ } ++ ++ /* check if fs supports reading */ ++ if(!meta_file->f_op->read) { ++ printk(KERN_CRIT "mini_fo: meta_build_lists: \ ++ ERROR, fs does not support reading.\n"); ++ goto out_err_close; ++ } ++ ++ /* allocate a page for transfering the data */ ++ buf = (void *) __get_free_page(GFP_KERNEL); ++ if(!buf) { ++ printk(KERN_CRIT "mini_fo: meta_build_lists: \ ++ ERROR, out of mem.\n"); ++ goto out_err_close; ++ } ++ meta_file->f_pos = 0; ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ do { ++ char *c; ++ bytes = meta_file->f_op->read(meta_file, buf, PAGE_SIZE, &meta_file->f_pos); ++ if(bytes == PAGE_SIZE) { ++ /* trim a cut off filename and adjust f_pos to get it next time */ ++ for(c = (char*) buf+PAGE_SIZE; ++ *c != '\n'; ++ c--, bytes--, meta_file->f_pos--); ++ } ++ entry = (char *) buf; ++ while(entry < (char *) buf+bytes) { ++ ++ char *old_path; ++ char *dir_name; ++ int old_len, new_len; ++ ++ /* len without '\n'*/ ++ len = (int) (strchr(entry, '\n') - entry); ++ switch (*entry) { ++ case 'D': ++ /* format: "D filename" */ ++ meta_list_add_d_entry(dentry, ++ entry+2, ++ len-2); ++ break; ++ case 'R': ++ /* format: "R path/xy/dir newDir" */ ++ old_path = entry+2; ++ dir_name = strchr(old_path, ' ') + 1; ++ old_len = dir_name - old_path - 1; ++ new_len = ((int) entry) + len - ((int ) dir_name); ++ meta_list_add_r_entry(dentry, ++ old_path, ++ old_len, ++ dir_name, ++ new_len); ++ break; ++ default: ++ /* unknown entry type detected */ ++ break; ++ } ++ entry += len+1; ++ } ++ ++ } while(meta_file->f_pos < meta_dentry->d_inode->i_size); ++ ++ free_page((unsigned long) buf); ++ set_fs(old_fs); ++ fput(meta_file); ++ } ++ goto out_ok; ++ ++ out_err_close: ++ fput(meta_file); ++ out_err: ++ mntput(meta_mnt); ++ dput(meta_dentry); ++ return -1; ++ out_ok: ++ return 1; /* check this!!! inode_info->wol_size; */ ++} ++ ++/* cleanups up all lists and free's the mem by dentry */ ++int meta_put_lists(dentry_t *dentry) ++{ ++ if(!dentry || !dentry->d_inode) { ++ printk("mini_fo: meta_put_lists: invalid dentry passed.\n"); ++ return -1; ++ } ++ return __meta_put_lists(dentry->d_inode); ++} ++ ++/* cleanups up all lists and free's the mem by inode */ ++int __meta_put_lists(inode_t *inode) ++{ ++ int err = 0; ++ if(!inode || !itopd(inode)) { ++ printk("mini_fo: __meta_put_lists: invalid inode passed.\n"); ++ return -1; ++ } ++ err = __meta_put_d_list(inode); ++ err |= __meta_put_r_list(inode); ++ return err; ++} ++ ++int meta_sync_lists(dentry_t *dentry) ++{ ++ int err = 0; ++ if(!dentry || !dentry->d_inode) { ++ printk("mini_fo: meta_sync_lists: \ ++ invalid dentry passed.\n"); ++ return -1; ++ } ++ err = meta_sync_d_list(dentry, 0); ++ err |= meta_sync_r_list(dentry, 1); ++ return err; ++} ++ ++ ++/* remove all D entries from the renamed list and free the mem */ ++int __meta_put_d_list(inode_t *inode) ++{ ++ struct list_head *tmp; ++ struct deleted_entry *del_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!inode || !itopd(inode)) { ++ printk(KERN_CRIT "mini_fo: __meta_put_d_list: \ ++ invalid inode passed.\n"); ++ return -1; ++ } ++ inode_info = itopd(inode); ++ ++ /* nuke the DELETED-list */ ++ if(inode_info->deleted_list_size <= 0) ++ return 0; ++ ++ while(!list_empty(&inode_info->deleted_list)) { ++ tmp = inode_info->deleted_list.next; ++ list_del(tmp); ++ del_entry = list_entry(tmp, struct deleted_entry, list); ++ kfree(del_entry->name); ++ kfree(del_entry); ++ } ++ inode_info->deleted_list_size = 0; ++ ++ return 0; ++} ++ ++/* remove all R entries from the renamed list and free the mem */ ++int __meta_put_r_list(inode_t *inode) ++{ ++ struct list_head *tmp; ++ struct renamed_entry *ren_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!inode || !itopd(inode)) { ++ printk(KERN_CRIT "mini_fo: meta_put_r_list: invalid inode.\n"); ++ return -1; ++ } ++ inode_info = itopd(inode); ++ ++ /* nuke the RENAMED-list */ ++ if(inode_info->renamed_list_size <= 0) ++ return 0; ++ ++ while(!list_empty(&inode_info->renamed_list)) { ++ tmp = inode_info->renamed_list.next; ++ list_del(tmp); ++ ren_entry = list_entry(tmp, struct renamed_entry, list); ++ kfree(ren_entry->new_name); ++ kfree(ren_entry->old_name); ++ kfree(ren_entry); ++ } ++ inode_info->renamed_list_size = 0; ++ ++ return 0; ++} ++ ++int meta_add_d_entry(dentry_t *dentry, const char *name, int len) ++{ ++ int err = 0; ++ err = meta_list_add_d_entry(dentry, name, len); ++ err |= meta_write_d_entry(dentry,name,len); ++ return err; ++} ++ ++/* add a D entry to the deleted list */ ++int meta_list_add_d_entry(dentry_t *dentry, const char *name, int len) ++{ ++ struct deleted_entry *del_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: meta_list_add_d_entry: \ ++ invalid dentry passed.\n"); ++ return -1; ++ } ++ inode_info = itopd(dentry->d_inode); ++ ++ if(inode_info->deleted_list_size < 0) ++ return -1; ++ ++ del_entry = (struct deleted_entry *) ++ kmalloc(sizeof(struct deleted_entry), GFP_KERNEL); ++ del_entry->name = (char*) kmalloc(len, GFP_KERNEL); ++ if(!del_entry || !del_entry->name) { ++ printk(KERN_CRIT "mini_fo: meta_list_add_d_entry: \ ++ out of mem.\n"); ++ kfree(del_entry->name); ++ kfree(del_entry); ++ return -ENOMEM; ++ } ++ ++ strncpy(del_entry->name, name, len); ++ del_entry->len = len; ++ ++ list_add(&del_entry->list, &inode_info->deleted_list); ++ inode_info->deleted_list_size++; ++ return 0; ++} ++ ++int meta_add_r_entry(dentry_t *dentry, ++ const char *old_name, int old_len, ++ const char *new_name, int new_len) ++{ ++ int err = 0; ++ err = meta_list_add_r_entry(dentry, ++ old_name, old_len, ++ new_name, new_len); ++ err |= meta_write_r_entry(dentry, ++ old_name, old_len, ++ new_name, new_len); ++ return err; ++} ++ ++/* add a R entry to the renamed list */ ++int meta_list_add_r_entry(dentry_t *dentry, ++ const char *old_name, int old_len, ++ const char *new_name, int new_len) ++{ ++ struct renamed_entry *ren_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: meta_list_add_r_entry: \ ++ invalid dentry passed.\n"); ++ return -1; ++ } ++ inode_info = itopd(dentry->d_inode); ++ ++ if(inode_info->renamed_list_size < 0) ++ return -1; ++ ++ ren_entry = (struct renamed_entry *) ++ kmalloc(sizeof(struct renamed_entry), GFP_KERNEL); ++ ren_entry->old_name = (char*) kmalloc(old_len, GFP_KERNEL); ++ ren_entry->new_name = (char*) kmalloc(new_len, GFP_KERNEL); ++ ++ if(!ren_entry || !ren_entry->old_name || !ren_entry->new_name) { ++ printk(KERN_CRIT "mini_fo: meta_list_add_r_entry: \ ++ out of mem.\n"); ++ kfree(ren_entry->new_name); ++ kfree(ren_entry->old_name); ++ kfree(ren_entry); ++ return -ENOMEM; ++ } ++ ++ strncpy(ren_entry->old_name, old_name, old_len); ++ ren_entry->old_len = old_len; ++ strncpy(ren_entry->new_name, new_name, new_len); ++ ren_entry->new_len = new_len; ++ ++ list_add(&ren_entry->list, &inode_info->renamed_list); ++ inode_info->renamed_list_size++; ++ return 0; ++} ++ ++ ++int meta_remove_r_entry(dentry_t *dentry, const char *name, int len) ++{ ++ int err = 0; ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT ++ "mini_fo: meta_remove_r_entry: \ ++ invalid dentry passed.\n"); ++ return -1; ++ } ++ ++ err = meta_list_remove_r_entry(dentry, name, len); ++ err |= meta_sync_lists(dentry); ++ return err; ++} ++ ++int meta_list_remove_r_entry(dentry_t *dentry, const char *name, int len) ++{ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT ++ "mini_fo: meta_list_remove_r_entry: \ ++ invalid dentry passed.\n"); ++ return -1; ++ } ++ return __meta_list_remove_r_entry(dentry->d_inode, name, len); ++} ++ ++int __meta_list_remove_r_entry(inode_t *inode, const char *name, int len) ++{ ++ struct list_head *tmp; ++ struct renamed_entry *ren_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!inode || !itopd(inode)) ++ printk(KERN_CRIT ++ "mini_fo: __meta_list_remove_r_entry: \ ++ invalid inode passed.\n"); ++ inode_info = itopd(inode); ++ ++ if(inode_info->renamed_list_size < 0) ++ return -1; ++ if(inode_info->renamed_list_size == 0) ++ return 1; ++ ++ list_for_each(tmp, &inode_info->renamed_list) { ++ ren_entry = list_entry(tmp, struct renamed_entry, list); ++ if(ren_entry->new_len != len) ++ continue; ++ ++ if(!strncmp(ren_entry->new_name, name, len)) { ++ list_del(tmp); ++ kfree(ren_entry->new_name); ++ kfree(ren_entry->old_name); ++ kfree(ren_entry); ++ inode_info->renamed_list_size--; ++ return 0; ++ } ++ } ++ return 1; ++} ++ ++ ++/* append a single D entry to the meta file */ ++int meta_write_d_entry(dentry_t *dentry, const char *name, int len) ++{ ++ dentry_t *meta_dentry = 0; ++ file_t *meta_file = 0; ++ mm_segment_t old_fs; ++ ++ int bytes, err; ++ struct vfsmount *meta_mnt = 0; ++ char *buf; ++ ++ err = 0; ++ ++ if(itopd(dentry->d_inode)->deleted_list_size < 0) { ++ err = -1; ++ goto out; ++ } ++ ++ if(dtopd(dentry)->state == UNMODIFIED) { ++ err = build_sto_structure(dentry->d_parent, dentry); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \ ++ build_sto_structure failed.\n"); ++ goto out; ++ } ++ } ++ meta_dentry = lookup_one_len(META_FILENAME, ++ dtohd2(dentry), strlen (META_FILENAME)); ++ ++ /* We need to create a META-file */ ++ if(!meta_dentry->d_inode) { ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, ++ S_IRUSR | S_IWUSR, ++ NULL); ++#else ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, ++ S_IRUSR | S_IWUSR); ++#endif ++ } ++ /* open META-file for writing */ ++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1); ++ if(!meta_file || IS_ERR(meta_file)) { ++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \ ++ ERROR opening meta file.\n"); ++ mntput(meta_mnt); /* $%& is this necessary? */ ++ dput(meta_dentry); ++ err = -1; ++ goto out; ++ } ++ ++ /* check if fs supports writing */ ++ if(!meta_file->f_op->write) { ++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \ ++ ERROR, fs does not support writing.\n"); ++ goto out_err_close; ++ } ++ ++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */ ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ ++ /* size: len for name, 1 for \n and 2 for "D " */ ++ buf = (char *) kmalloc(len+3, GFP_KERNEL); ++ if (!buf) { ++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \ ++ out of mem.\n"); ++ return -ENOMEM; ++ } ++ ++ buf[0] = 'D'; ++ buf[1] = ' '; ++ strncpy(buf+2, name, len); ++ buf[len+2] = '\n'; ++ bytes = meta_file->f_op->write(meta_file, buf, len+3, ++ &meta_file->f_pos); ++ if(bytes != len+3) { ++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \ ++ ERROR writing.\n"); ++ err = -1; ++ } ++ kfree(buf); ++ set_fs(old_fs); ++ ++ out_err_close: ++ fput(meta_file); ++ out: ++ return err; ++} ++ ++/* append a single R entry to the meta file */ ++int meta_write_r_entry(dentry_t *dentry, ++ const char *old_name, int old_len, ++ const char *new_name, int new_len) ++{ ++ dentry_t *meta_dentry = 0; ++ file_t *meta_file = 0; ++ mm_segment_t old_fs; ++ ++ int bytes, err, buf_len; ++ struct vfsmount *meta_mnt = 0; ++ char *buf; ++ ++ ++ err = 0; ++ ++ if(itopd(dentry->d_inode)->renamed_list_size < 0) { ++ err = -1; ++ goto out; ++ } ++ ++ /* build the storage structure? */ ++ if(dtopd(dentry)->state == UNMODIFIED) { ++ err = build_sto_structure(dentry->d_parent, dentry); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: \ ++ build_sto_structure failed.\n"); ++ goto out; ++ } ++ } ++ meta_dentry = lookup_one_len(META_FILENAME, ++ dtohd2(dentry), ++ strlen (META_FILENAME)); ++ if(!meta_dentry->d_inode) { ++ /* We need to create a META-file */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, S_IRUSR | S_IWUSR, NULL); ++#else ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, S_IRUSR | S_IWUSR); ++#endif ++ } ++ /* open META-file for writing */ ++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1); ++ if(!meta_file || IS_ERR(meta_file)) { ++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: \ ++ ERROR opening meta file.\n"); ++ mntput(meta_mnt); ++ dput(meta_dentry); ++ err = -1; ++ goto out; ++ } ++ ++ /* check if fs supports writing */ ++ if(!meta_file->f_op->write) { ++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: \ ++ ERROR, fs does not support writing.\n"); ++ goto out_err_close; ++ } ++ ++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */ ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ ++ /* size: 2 for "R ", old_len+new_len for names, 1 blank+1 \n */ ++ buf_len = old_len + new_len + 4; ++ buf = (char *) kmalloc(buf_len, GFP_KERNEL); ++ if (!buf) { ++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: out of mem.\n"); ++ return -ENOMEM; ++ } ++ ++ buf[0] = 'R'; ++ buf[1] = ' '; ++ strncpy(buf + 2, old_name, old_len); ++ buf[old_len + 2] = ' '; ++ strncpy(buf + old_len + 3, new_name, new_len); ++ buf[buf_len -1] = '\n'; ++ bytes = meta_file->f_op->write(meta_file, buf, buf_len, &meta_file->f_pos); ++ if(bytes != buf_len) { ++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: ERROR writing.\n"); ++ err = -1; ++ } ++ ++ kfree(buf); ++ set_fs(old_fs); ++ ++ out_err_close: ++ fput(meta_file); ++ out: ++ return err; ++} ++ ++/* sync D list to disk, append data if app_flag is 1 */ ++/* check the meta_mnt, which seems not to be used (properly) */ ++ ++int meta_sync_d_list(dentry_t *dentry, int app_flag) ++{ ++ dentry_t *meta_dentry; ++ file_t *meta_file; ++ mm_segment_t old_fs; ++ ++ int bytes, err; ++ struct vfsmount *meta_mnt; ++ char *buf; ++ ++ struct list_head *tmp; ++ struct deleted_entry *del_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ err = 0; ++ meta_file=0; ++ meta_mnt=0; ++ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ invalid inode passed.\n"); ++ err = -1; ++ goto out; ++ } ++ inode_info = itopd(dentry->d_inode); ++ ++ if(inode_info->deleted_list_size < 0) { ++ err = -1; ++ goto out; ++ } ++ ++ /* ok, there is something to sync */ ++ ++ /* build the storage structure? */ ++ if(!dtohd2(dentry) && !itohi2(dentry->d_inode)) { ++ err = build_sto_structure(dentry->d_parent, dentry); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ build_sto_structure failed.\n"); ++ goto out; ++ } ++ } ++ meta_dentry = lookup_one_len(META_FILENAME, ++ dtohd2(dentry), ++ strlen(META_FILENAME)); ++ if(!meta_dentry->d_inode) { ++ /* We need to create a META-file */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, S_IRUSR | S_IWUSR, NULL); ++#else ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, S_IRUSR | S_IWUSR); ++#endif ++ app_flag = 0; ++ } ++ /* need we truncate the meta file? */ ++ if(!app_flag) { ++ struct iattr newattrs; ++ newattrs.ia_size = 0; ++ newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&meta_dentry->d_inode->i_mutex); ++#else ++ down(&meta_dentry->d_inode->i_sem); ++#endif ++ err = notify_change(meta_dentry, &newattrs); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&meta_dentry->d_inode->i_mutex); ++#else ++ up(&meta_dentry->d_inode->i_sem); ++#endif ++ ++ if(err || meta_dentry->d_inode->i_size != 0) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ ERROR truncating meta file.\n"); ++ goto out_err_close; ++ } ++ } ++ ++ /* open META-file for writing */ ++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1); ++ if(!meta_file || IS_ERR(meta_file)) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ ERROR opening meta file.\n"); ++ /* we don't mntget so we dont't mntput (for now) ++ * mntput(meta_mnt); ++ */ ++ dput(meta_dentry); ++ err = -1; ++ goto out; ++ } ++ ++ /* check if fs supports writing */ ++ if(!meta_file->f_op->write) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ ERROR, fs does not support writing.\n"); ++ goto out_err_close; ++ } ++ ++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */ ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ ++ /* here we go... */ ++ list_for_each(tmp, &inode_info->deleted_list) { ++ del_entry = list_entry(tmp, struct deleted_entry, list); ++ ++ /* size: len for name, 1 for \n and 2 for "D " */ ++ buf = (char *) kmalloc(del_entry->len+3, GFP_KERNEL); ++ if (!buf) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ out of mem.\n"); ++ return -ENOMEM; ++ } ++ ++ buf[0] = 'D'; ++ buf[1] = ' '; ++ strncpy(buf+2, del_entry->name, del_entry->len); ++ buf[del_entry->len+2] = '\n'; ++ bytes = meta_file->f_op->write(meta_file, buf, ++ del_entry->len+3, ++ &meta_file->f_pos); ++ if(bytes != del_entry->len+3) { ++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \ ++ ERROR writing.\n"); ++ err |= -1; ++ } ++ kfree(buf); ++ } ++ set_fs(old_fs); ++ ++ out_err_close: ++ fput(meta_file); ++ out: ++ return err; ++ ++} ++ ++int meta_sync_r_list(dentry_t *dentry, int app_flag) ++{ ++ dentry_t *meta_dentry; ++ file_t *meta_file; ++ mm_segment_t old_fs; ++ ++ int bytes, err, buf_len; ++ struct vfsmount *meta_mnt; ++ char *buf; ++ ++ struct list_head *tmp; ++ struct renamed_entry *ren_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ err = 0; ++ meta_file=0; ++ meta_mnt=0; ++ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ invalid dentry passed.\n"); ++ err = -1; ++ goto out; ++ } ++ inode_info = itopd(dentry->d_inode); ++ ++ if(inode_info->deleted_list_size < 0) { ++ err = -1; ++ goto out; ++ } ++ ++ /* ok, there is something to sync */ ++ ++ /* build the storage structure? */ ++ if(!dtohd2(dentry) && !itohi2(dentry->d_inode)) { ++ err = build_sto_structure(dentry->d_parent, dentry); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ build_sto_structure failed.\n"); ++ goto out; ++ } ++ } ++ meta_dentry = lookup_one_len(META_FILENAME, ++ dtohd2(dentry), ++ strlen(META_FILENAME)); ++ if(!meta_dentry->d_inode) { ++ /* We need to create a META-file */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, S_IRUSR | S_IWUSR, NULL); ++#else ++ vfs_create(dtohd2(dentry)->d_inode, ++ meta_dentry, S_IRUSR | S_IWUSR); ++#endif ++ app_flag = 0; ++ } ++ /* need we truncate the meta file? */ ++ if(!app_flag) { ++ struct iattr newattrs; ++ newattrs.ia_size = 0; ++ newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&meta_dentry->d_inode->i_mutex); ++#else ++ down(&meta_dentry->d_inode->i_sem); ++#endif ++ err = notify_change(meta_dentry, &newattrs); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&meta_dentry->d_inode->i_mutex); ++#else ++ up(&meta_dentry->d_inode->i_sem); ++#endif ++ if(err || meta_dentry->d_inode->i_size != 0) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ ERROR truncating meta file.\n"); ++ goto out_err_close; ++ } ++ } ++ ++ /* open META-file for writing */ ++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1); ++ if(!meta_file || IS_ERR(meta_file)) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ ERROR opening meta file.\n"); ++ /* we don't mntget so we dont't mntput (for now) ++ * mntput(meta_mnt); ++ */ ++ dput(meta_dentry); ++ err = -1; ++ goto out; ++ } ++ ++ /* check if fs supports writing */ ++ if(!meta_file->f_op->write) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ ERROR, fs does not support writing.\n"); ++ goto out_err_close; ++ } ++ ++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */ ++ old_fs = get_fs(); ++ set_fs(KERNEL_DS); ++ ++ /* here we go... */ ++ list_for_each(tmp, &inode_info->renamed_list) { ++ ren_entry = list_entry(tmp, struct renamed_entry, list); ++ /* size: ++ * 2 for "R ", old_len+new_len for names, 1 blank+1 \n */ ++ buf_len = ren_entry->old_len + ren_entry->new_len + 4; ++ buf = (char *) kmalloc(buf_len, GFP_KERNEL); ++ if (!buf) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ out of mem.\n"); ++ return -ENOMEM; ++ } ++ buf[0] = 'R'; ++ buf[1] = ' '; ++ strncpy(buf + 2, ren_entry->old_name, ren_entry->old_len); ++ buf[ren_entry->old_len + 2] = ' '; ++ strncpy(buf + ren_entry->old_len + 3, ++ ren_entry->new_name, ren_entry->new_len); ++ buf[buf_len - 1] = '\n'; ++ bytes = meta_file->f_op->write(meta_file, buf, ++ buf_len, &meta_file->f_pos); ++ if(bytes != buf_len) { ++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \ ++ ERROR writing.\n"); ++ err |= -1; ++ } ++ kfree(buf); ++ } ++ set_fs(old_fs); ++ ++ out_err_close: ++ fput(meta_file); ++ out: ++ return err; ++} ++ ++int meta_check_d_entry(dentry_t *dentry, const char *name, int len) ++{ ++ if(!dentry || !dentry->d_inode) ++ printk(KERN_CRIT "mini_fo: meta_check_d_dentry: \ ++ invalid dentry passed.\n"); ++ return __meta_check_d_entry(dentry->d_inode, name, len); ++} ++ ++int __meta_check_d_entry(inode_t *inode, const char *name, int len) ++{ ++ struct list_head *tmp; ++ struct deleted_entry *del_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!inode || !itopd(inode)) ++ printk(KERN_CRIT "mini_fo: __meta_check_d_dentry: \ ++ invalid inode passed.\n"); ++ ++ inode_info = itopd(inode); ++ ++ if(inode_info->deleted_list_size <= 0) ++ return 0; ++ ++ list_for_each(tmp, &inode_info->deleted_list) { ++ del_entry = list_entry(tmp, struct deleted_entry, list); ++ if(del_entry->len != len) ++ continue; ++ ++ if(!strncmp(del_entry->name, name, len)) ++ return 1; ++ } ++ return 0; ++} ++ ++/* ++ * check if file has been renamed and return path to orig. base dir. ++ * Implements no error return values so far, what of course sucks. ++ * String is null terminated.' ++ */ ++char* meta_check_r_entry(dentry_t *dentry, const char *name, int len) ++{ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry: \ ++ invalid dentry passed.\n"); ++ return NULL; ++ } ++ return __meta_check_r_entry(dentry->d_inode, name, len); ++} ++ ++char* __meta_check_r_entry(inode_t *inode, const char *name, int len) ++{ ++ struct list_head *tmp; ++ struct renamed_entry *ren_entry; ++ struct mini_fo_inode_info *inode_info; ++ char *old_path; ++ ++ if(!inode || !itopd(inode)) { ++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry: \ ++ invalid inode passed.\n"); ++ return NULL; ++ } ++ inode_info = itopd(inode); ++ ++ if(inode_info->renamed_list_size <= 0) ++ return NULL; ++ ++ list_for_each(tmp, &inode_info->renamed_list) { ++ ren_entry = list_entry(tmp, struct renamed_entry, list); ++ if(ren_entry->new_len != len) ++ continue; ++ ++ if(!strncmp(ren_entry->new_name, name, len)) { ++ old_path = (char *) ++ kmalloc(ren_entry->old_len+1, GFP_KERNEL); ++ strncpy(old_path, ++ ren_entry->old_name, ++ ren_entry->old_len); ++ old_path[ren_entry->old_len]='\0'; ++ return old_path; ++ } ++ } ++ return NULL; ++} ++ ++/* ++ * This version only checks if entry exists and return: ++ * 1 if exists, ++ * 0 if not, ++ * -1 if error. ++ */ ++int meta_is_r_entry(dentry_t *dentry, const char *name, int len) ++{ ++ if(!dentry || !dentry->d_inode) { ++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry [2]: \ ++ invalid dentry passed.\n"); ++ return -1; ++ } ++ return __meta_is_r_entry(dentry->d_inode, name, len); ++} ++ ++int __meta_is_r_entry(inode_t *inode, const char *name, int len) ++{ ++ struct list_head *tmp; ++ struct renamed_entry *ren_entry; ++ struct mini_fo_inode_info *inode_info; ++ ++ if(!inode || !itopd(inode)) { ++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry [2]: \ ++ invalid inode passed.\n"); ++ return -1; ++ } ++ inode_info = itopd(inode); ++ ++ if(inode_info->renamed_list_size <= 0) ++ return -1; ++ ++ list_for_each(tmp, &inode_info->renamed_list) { ++ ren_entry = list_entry(tmp, struct renamed_entry, list); ++ if(ren_entry->new_len != len) ++ continue; ++ ++ if(!strncmp(ren_entry->new_name, name, len)) ++ return 1; ++ } ++ return 0; ++} ++ +diff -urN linux-2.6.21.1.old/fs/mini_fo/mini_fo.h linux-2.6.21.1.dev/fs/mini_fo/mini_fo.h +--- linux-2.6.21.1.old/fs/mini_fo/mini_fo.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/mini_fo.h 2007-05-26 21:01:26.167329264 +0200 +@@ -0,0 +1,510 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifndef __MINI_FO_H_ ++#define __MINI_FO_H_ ++ ++#ifdef __KERNEL__ ++ ++/* META stuff */ ++#define META_FILENAME "META_dAfFgHE39ktF3HD2sr" ++ ++/* use xattrs? */ ++#define XATTR ++ ++/* File attributes that when changed, result in a file beeing copied to storage */ ++#define COPY_FLAGS ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_SIZE ++ ++/* ++ * mini_fo filestates ++ */ ++#define MODIFIED 1 ++#define UNMODIFIED 2 ++#define CREATED 3 ++#define DEL_REWRITTEN 4 ++#define DELETED 5 ++#define NON_EXISTANT 6 ++ ++/* fist file systems superblock magic */ ++# define MINI_FO_SUPER_MAGIC 0xf15f ++ ++/* ++ * STRUCTURES: ++ */ ++ ++/* mini_fo inode data in memory */ ++struct mini_fo_inode_info { ++ inode_t *wii_inode; ++ inode_t *wii_inode2; /* pointer to storage inode */ ++ ++ /* META-data lists */ ++ /* deleted list, ex wol */ ++ struct list_head deleted_list; ++ int deleted_list_size; ++ ++ /* renamed list */ ++ struct list_head renamed_list; ++ int renamed_list_size; ++ ++ /* add other lists here ... */ ++}; ++ ++/* mini_fo dentry data in memory */ ++struct mini_fo_dentry_info { ++ dentry_t *wdi_dentry; ++ dentry_t *wdi_dentry2; /* pointer to storage dentry */ ++ unsigned int state; /* state of the mini_fo dentry */ ++}; ++ ++ ++/* mini_fo super-block data in memory */ ++struct mini_fo_sb_info { ++ super_block_t *wsi_sb, *wsi_sb2; /* mk: might point to the same sb */ ++ struct vfsmount *hidden_mnt, *hidden_mnt2; ++ dentry_t *base_dir_dentry; ++ dentry_t *storage_dir_dentry; ++ ; ++}; ++ ++/* readdir_data, readdir helper struct */ ++struct readdir_data { ++ struct list_head ndl_list; /* linked list head ptr */ ++ int ndl_size; /* list size */ ++ int sto_done; /* flag to show that the storage dir entries have ++ * all been read an now follow base entries */ ++}; ++ ++/* file private data. */ ++struct mini_fo_file_info { ++ struct file *wfi_file; ++ struct file *wfi_file2; /* pointer to storage file */ ++ struct readdir_data rd; ++}; ++ ++/* struct ndl_entry */ ++struct ndl_entry { ++ struct list_head list; ++ char *name; ++ int len; ++}; ++ ++/******************************** ++ * META-data structures ++ ********************************/ ++ ++/* deleted entry */ ++struct deleted_entry { ++ struct list_head list; ++ char *name; ++ int len; ++}; ++ ++/* renamed entry */ ++struct renamed_entry { ++ struct list_head list; ++ char *old_name; /* old directory with full path */ ++ int old_len; /* length of above string */ ++ char *new_name; /* new directory name */ ++ int new_len; /* length of above string */ ++}; ++ ++/* attr_change entry */ ++struct attr_change_entry { ++ struct list_head list; ++ char *name; ++ int len; ++}; ++ ++/* link entry */ ++struct link_entry { ++ struct list_head list; ++ int links_moved; ++ int inum_base; ++ int inum_sto; ++ char *weird_name; ++ int weird_name_len; ++}; ++ ++ ++/* Some other stuff required for mini_fo_filldir64, copied from ++ * fs/readdir.c ++ */ ++ ++#define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1)) ++#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de))) ++ ++ ++struct linux_dirent64 { ++ u64 d_ino; ++ s64 d_off; ++ unsigned short d_reclen; ++ unsigned char d_type; ++ char d_name[0]; ++}; ++ ++ ++struct getdents_callback64 { ++ struct linux_dirent64 * current_dir; ++ struct linux_dirent64 * previous; ++ int count; ++ int error; ++}; ++ ++struct linux_dirent { ++ unsigned long d_ino; ++ unsigned long d_off; ++ unsigned short d_reclen; ++ char d_name[1]; ++}; ++ ++struct getdents_callback { ++ struct linux_dirent * current_dir; ++ struct linux_dirent * previous; ++ int count; ++ int error; ++}; ++ ++ ++/* ++ * MACROS: ++ */ ++ ++/* file TO private_data */ ++# define ftopd(file) ((struct mini_fo_file_info *)((file)->private_data)) ++# define __ftopd(file) ((file)->private_data) ++/* file TO hidden_file */ ++# define ftohf(file) ((ftopd(file))->wfi_file) ++# define ftohf2(file) ((ftopd(file))->wfi_file2) ++ ++/* inode TO private_data */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++# define itopd(ino) ((struct mini_fo_inode_info *)(ino)->i_private) ++# define __itopd(ino) ((ino)->i_private) ++#else ++# define itopd(ino) ((struct mini_fo_inode_info *)(ino)->u.generic_ip) ++# define __itopd(ino) ((ino)->u.generic_ip) ++#endif ++/* inode TO hidden_inode */ ++# define itohi(ino) (itopd(ino)->wii_inode) ++# define itohi2(ino) (itopd(ino)->wii_inode2) ++ ++/* superblock TO private_data */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++# define stopd(super) ((struct mini_fo_sb_info *)(super)->s_fs_info) ++# define __stopd(super) ((super)->s_fs_info) ++#else ++# define stopd(super) ((struct mini_fo_sb_info *)(super)->u.generic_sbp) ++# define __stopd(super) ((super)->u.generic_sbp) ++#endif ++ ++/* unused? # define vfs2priv stopd */ ++/* superblock TO hidden_superblock */ ++ ++# define stohs(super) (stopd(super)->wsi_sb) ++# define stohs2(super) (stopd(super)->wsi_sb2) ++ ++/* dentry TO private_data */ ++# define dtopd(dentry) ((struct mini_fo_dentry_info *)(dentry)->d_fsdata) ++# define __dtopd(dentry) ((dentry)->d_fsdata) ++/* dentry TO hidden_dentry */ ++# define dtohd(dent) (dtopd(dent)->wdi_dentry) ++# define dtohd2(dent) (dtopd(dent)->wdi_dentry2) ++ ++/* dentry to state */ ++# define dtost(dent) (dtopd(dent)->state) ++# define sbt(sb) ((sb)->s_type->name) ++ ++#define IS_WRITE_FLAG(flag) (flag & (O_RDWR | O_WRONLY | O_APPEND)) ++#define IS_COPY_FLAG(flag) (flag & (COPY_FLAGS)) ++ ++/* macros to simplify non-SCA code */ ++# define MALLOC_PAGE_POINTERS(hidden_pages, num_hidden_pages) ++# define MALLOC_PAGEDATA_POINTERS(hidden_pages_data, num_hidden_pages) ++# define FREE_PAGE_POINTERS(hidden_pages, num) ++# define FREE_PAGEDATA_POINTERS(hidden_pages_data, num) ++# define FOR_EACH_PAGE ++# define CURRENT_HIDDEN_PAGE hidden_page ++# define CURRENT_HIDDEN_PAGEDATA hidden_page_data ++# define CURRENT_HIDDEN_PAGEINDEX page->index ++ ++/* ++ * EXTERNALS: ++ */ ++extern struct file_operations mini_fo_main_fops; ++extern struct file_operations mini_fo_dir_fops; ++extern struct inode_operations mini_fo_main_iops; ++extern struct inode_operations mini_fo_dir_iops; ++extern struct inode_operations mini_fo_symlink_iops; ++extern struct super_operations mini_fo_sops; ++extern struct dentry_operations mini_fo_dops; ++extern struct vm_operations_struct mini_fo_shared_vmops; ++extern struct vm_operations_struct mini_fo_private_vmops; ++extern struct address_space_operations mini_fo_aops; ++ ++#if 0 /* unused by mini_fo */ ++extern int mini_fo_interpose(dentry_t *hidden_dentry, dentry_t *this_dentry, super_block_t *sb, int flag); ++#if defined(FIST_FILTER_DATA) || defined(FIST_FILTER_SCA) ++extern page_t *mini_fo_get1page(file_t *file, int index); ++extern int mini_fo_fill_zeros(file_t *file, page_t *page, unsigned from); ++# endif /* FIST_FILTER_DATA || FIST_FILTER_SCA */ ++ ++ ++# define mini_fo_hidden_dentry(d) __mini_fo_hidden_dentry(__FILE__,__FUNCTION__,__LINE__,(d)) ++# define mini_fo_hidden_sto_dentry(d) __mini_fo_hidden_sto_dentry(__FILE__,__FUNCTION__,__LINE__,(d)) ++ ++extern dentry_t *__mini_fo_hidden_dentry(char *file, char *func, int line, dentry_t *this_dentry); ++extern dentry_t *__mini_fo_hidden_sto_dentry(char *file, char *func, int line, dentry_t *this_dentry); ++ ++extern int mini_fo_read_file(const char *filename, void *buf, int len); ++extern int mini_fo_write_file(const char *filename, void *buf, int len); ++extern dentry_t *fist_lookup(dentry_t *dir, const char *name, vnode_t **out, uid_t uid, gid_t gid); ++#endif /* unused by mini_fo */ ++ ++/* state transition functions */ ++extern int nondir_unmod_to_mod(dentry_t *dentry, int cp_flag); ++extern int nondir_del_rew_to_del(dentry_t *dentry); ++extern int nondir_creat_to_del(dentry_t *dentry); ++extern int nondir_mod_to_del(dentry_t *dentry); ++extern int nondir_unmod_to_del(dentry_t *dentry); ++ ++extern int dir_unmod_to_mod(dentry_t *dentry); ++ ++/* rename specials */ ++extern int rename_directory(inode_t *old_dir, dentry_t *old_dentry, inode_t *new_dir, dentry_t *new_dentry); ++extern int rename_nondir(inode_t *old_dir, dentry_t *old_dentry, inode_t *new_dir, dentry_t *new_dentry); ++ ++/* misc stuff */ ++extern int mini_fo_tri_interpose(dentry_t *hidden_dentry, ++ dentry_t *hidden_sto_dentry, ++ dentry_t *dentry, ++ super_block_t *sb, int flag); ++ ++extern int mini_fo_cp_cont(dentry_t *tgt_dentry, struct vfsmount *tgt_mnt, ++ dentry_t *src_dentry, struct vfsmount *src_mnt); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++extern int mini_fo_create(inode_t *dir, dentry_t *dentry, int mode, struct nameidata *nd); ++ ++extern int create_sto_nod(dentry_t *dentry, int mode, dev_t dev); ++extern int create_sto_reg_file(dentry_t *dentry, int mode, struct nameidata *nd); ++#else ++extern int mini_fo_create(inode_t *dir, dentry_t *dentry, int mode); ++ ++extern int create_sto_nod(dentry_t *dentry, int mode, int dev); ++extern int create_sto_reg_file(dentry_t *dentry, int mode); ++#endif ++ ++extern int create_sto_dir(dentry_t *dentry, int mode); ++ ++extern int exists_in_storage(dentry_t *dentry); ++extern int is_mini_fo_existant(dentry_t *dentry); ++extern int get_neg_sto_dentry(dentry_t *dentry); ++extern int build_sto_structure(dentry_t *dir, dentry_t *dentry); ++extern int get_mini_fo_bpath(dentry_t *dentry, char **bpath, int *bpath_len); ++extern dentry_t *bpath_walk(super_block_t *sb, char *bpath); ++extern int bpath_put(dentry_t *dentry); ++ ++/* check_mini_fo types functions */ ++extern int check_mini_fo_dentry(dentry_t *dentry); ++extern int check_mini_fo_file(file_t *file); ++extern int check_mini_fo_inode(inode_t *inode); ++ ++/* General meta functions, can be called from outside of meta.c */ ++extern int meta_build_lists(dentry_t *dentry); ++extern int meta_put_lists(dentry_t *dentry); ++extern int __meta_put_lists(inode_t *inode); ++ ++extern int meta_add_d_entry(dentry_t *dentry, const char *name, int len); ++extern int meta_add_r_entry(dentry_t *dentry, ++ const char *old_name, int old_len, ++ const char *new_name, int new_len); ++ ++extern int meta_remove_r_entry(dentry_t *dentry, const char *name, int len); ++ ++extern int meta_check_d_entry(dentry_t *dentry, const char *name, int len); ++extern int __meta_check_d_entry(inode_t *inode, const char *name, int len); ++ ++extern char* meta_check_r_entry(dentry_t *dentry, const char *name, int len); ++extern char* __meta_check_r_entry(inode_t *inode, const char *name, int len); ++extern int meta_is_r_entry(dentry_t *dentry, const char *name, int len); ++extern int __meta_is_r_entry(inode_t *inode, const char *name, int len); ++ ++/* Specific meta functions, should be called only inside meta.c */ ++extern int __meta_put_d_list(inode_t *inode); ++extern int __meta_put_r_list(inode_t *inode); ++ ++extern int meta_list_add_d_entry(dentry_t *dentry, ++ const char *name, int len); ++extern int meta_list_add_r_entry(dentry_t *dentry, ++ const char *old_name, int old_len, ++ const char *new_name, int new_len); ++ ++extern int meta_list_remove_r_entry(dentry_t *dentry, ++ const char *name, int len); ++ ++extern int __meta_list_remove_r_entry(inode_t *inode, ++ const char *name, int len); ++ ++extern int meta_write_d_entry(dentry_t *dentry, const char *name, int len); ++extern int meta_write_r_entry(dentry_t *dentry, ++ const char *old_name, int old_len, ++ const char *new_name, int new_len); ++ ++extern int meta_sync_lists(dentry_t *dentry); ++extern int meta_sync_d_list(dentry_t *dentry, int app_flag); ++extern int meta_sync_r_list(dentry_t *dentry, int app_flag); ++ ++/* ndl stuff */ ++extern int ndl_add_entry(struct readdir_data *rd, const char *name, int len); ++extern void ndl_put_list(struct readdir_data *rd); ++extern int ndl_check_entry(struct readdir_data *rd, ++ const char *name, int len); ++ ++ ++# define copy_inode_size(dst, src) \ ++ dst->i_size = src->i_size; \ ++ dst->i_blocks = src->i_blocks; ++ ++static inline void ++fist_copy_attr_atime(inode_t *dest, const inode_t *src) ++{ ++ ASSERT(dest != NULL); ++ ASSERT(src != NULL); ++ dest->i_atime = src->i_atime; ++} ++static inline void ++fist_copy_attr_times(inode_t *dest, const inode_t *src) ++{ ++ ASSERT(dest != NULL); ++ ASSERT(src != NULL); ++ dest->i_atime = src->i_atime; ++ dest->i_mtime = src->i_mtime; ++ dest->i_ctime = src->i_ctime; ++} ++static inline void ++fist_copy_attr_timesizes(inode_t *dest, const inode_t *src) ++{ ++ ASSERT(dest != NULL); ++ ASSERT(src != NULL); ++ dest->i_atime = src->i_atime; ++ dest->i_mtime = src->i_mtime; ++ dest->i_ctime = src->i_ctime; ++ copy_inode_size(dest, src); ++} ++static inline void ++fist_copy_attr_all(inode_t *dest, const inode_t *src) ++{ ++ ASSERT(dest != NULL); ++ ASSERT(src != NULL); ++ dest->i_mode = src->i_mode; ++ dest->i_nlink = src->i_nlink; ++ dest->i_uid = src->i_uid; ++ dest->i_gid = src->i_gid; ++ dest->i_rdev = src->i_rdev; ++ dest->i_atime = src->i_atime; ++ dest->i_mtime = src->i_mtime; ++ dest->i_ctime = src->i_ctime; ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19) ++ dest->i_blksize = src->i_blksize; ++#endif ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,12) ++ dest->i_blkbits = src->i_blkbits; ++# endif /* linux 2.4.12 and newer */ ++ copy_inode_size(dest, src); ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) ++ dest->i_attr_flags = src->i_attr_flags; ++#else ++ dest->i_flags = src->i_flags; ++#endif ++} ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++/* copied from linux/fs.h */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++static inline void double_lock(struct dentry *d1, struct dentry *d2) ++{ ++ struct mutex *m1 = &d1->d_inode->i_mutex; ++ struct mutex *m2 = &d2->d_inode->i_mutex; ++ if (m1 != m2) { ++ if ((unsigned long) m1 < (unsigned long) m2) { ++ struct mutex *tmp = m2; ++ m2 = m1; m1 = tmp; ++ } ++ mutex_lock(m1); ++ } ++ mutex_lock(m2); ++} ++ ++static inline void double_unlock(struct dentry *d1, struct dentry *d2) ++{ ++ struct mutex *m1 = &d1->d_inode->i_mutex; ++ struct mutex *m2 = &d2->d_inode->i_mutex; ++ mutex_unlock(m1); ++ if (m1 != m2) ++ mutex_unlock(m2); ++ dput(d1); ++ dput(d2); ++} ++ ++#else ++static inline void double_down(struct semaphore *s1, struct semaphore *s2) ++{ ++ if (s1 != s2) { ++ if ((unsigned long) s1 < (unsigned long) s2) { ++ struct semaphore *tmp = s2; ++ s2 = s1; s1 = tmp; ++ } ++ down(s1); ++ } ++ down(s2); ++} ++ ++static inline void double_up(struct semaphore *s1, struct semaphore *s2) ++{ ++ up(s1); ++ if (s1 != s2) ++ up(s2); ++} ++ ++static inline void double_lock(struct dentry *d1, struct dentry *d2) ++{ ++ double_down(&d1->d_inode->i_sem, &d2->d_inode->i_sem); ++} ++ ++static inline void double_unlock(struct dentry *d1, struct dentry *d2) ++{ ++ double_up(&d1->d_inode->i_sem,&d2->d_inode->i_sem); ++ dput(d1); ++ dput(d2); ++} ++#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) */ ++#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) */ ++#endif /* __KERNEL__ */ ++ ++/* ++ * Definitions for user and kernel code ++ */ ++ ++/* ioctls */ ++ ++#endif /* not __MINI_FO_H_ */ +diff -urN linux-2.6.21.1.old/fs/mini_fo/mini_fo-merge linux-2.6.21.1.dev/fs/mini_fo/mini_fo-merge +--- linux-2.6.21.1.old/fs/mini_fo/mini_fo-merge 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/mini_fo-merge 2007-05-26 21:01:26.167329264 +0200 +@@ -0,0 +1,180 @@ ++#!/bin/bash ++# ++# Copyright (C) 2005 Markus Klotzbuecher <mk@creamnet.de> ++# This program is free software; you can redistribute it and/or ++# modify it under the terms of the GNU General Public License ++# as published by the Free Software Foundation; either version ++# 2 of the License, or (at your option) any later version. ++# ++ ++BASE= ++STO= ++HELP= ++DRYRUN= ++VERBOSE= ++TMP="/tmp/" ++META_NAME="META_dAfFgHE39ktF3HD2sr" ++SKIP_DEL_LIST="skip-delete-list.mini_fo-merge" ++ ++COMMAND= ++exec_command() ++{ ++ if [ x$DRYRUN == "xset" ]; then ++ echo " would run: $COMMAND" ++ elif ! [ x$DRYRUN == "xset" ]; then ++ if [ x$VERBOSE == "xset" ]; then ++ echo " running: $COMMAND" ++ fi ++ eval $COMMAND ++ fi ++} ++ ++usage() ++{ ++cat <<EOF ++ ++USAGE: $0 -b <base dir> -s <storage dir> ++Version 0.1 ++ ++This script merges the contents of a mini_fo storage file system back ++to the base file system. ++ ++!!! Warning: This will modify the base filesystem and can destroy data ++ if used wrongly. ++ ++Options: ++ -b <base dir> ++ the directory of the base file system. ++ ++ -s <storage dir> ++ the directory of the storage file system. ++ ++ -d dry run, will not change anything and print the commands that ++ would be executed. ++ ++ -t tmp dir for storing temporary file. default: $TMP ++ ++ -v show what operations are performed. ++ ++ -h displays this message. ++ ++EOF ++} ++ ++# parse parameters ++while getopts hdvt:b:s: OPTS ++ do ++ case $OPTS in ++ h) HELP="set";; ++ d) DRYRUN="set";; ++ v) VERBOSE="set";; ++ b) BASE="$OPTARG";; ++ s) STO="$OPTARG";; ++ t) TMP="$OPTARG";; ++ ?) usage ++ exit 1;; ++ esac ++done ++ ++if [ "x$HELP" == "xset" ]; then ++ usage ++ exit -1 ++fi ++ ++if ! [ -d "$BASE" ] || ! [ -d "$STO" ]; then ++ echo -e "$0:\n Error, -s and/or -b argument missing. type $0 -h for help." ++ exit -1; ++fi ++ ++# get full paths ++pushd $STO; STO=`pwd`; popd ++pushd $BASE; BASE=`pwd`; popd ++TMP=${TMP%/} ++ ++ ++cat<<EOF ++############################################################################### ++# mini_fo-merge ++# ++# base dir: $BASE ++# storage dir: $STO ++# meta filename: $META_NAME ++# dry run: $DRYRUN ++# verbose: $VERBOSE ++# tmp files: $TMP ++############################################################################### ++ ++EOF ++ ++rm $TMP/$SKIP_DEL_LIST ++ ++# first process all renamed dirs ++echo "Merging renamed directories..." ++pushd $STO &> /dev/null ++find . -name $META_NAME -type f -print0 | xargs -0 -e grep -e '^R ' | tr -s ':R' ' ' | while read ENTRY; do ++ echo "entry: $ENTRY" ++ META_FILE=`echo $ENTRY | cut -d ' ' -f 1` ++ OLD_B_DIR=`echo $ENTRY | cut -d ' ' -f 2 | sed -e 's/\///'` ++ NEW_NAME=`echo $ENTRY | cut -d ' ' -f 3` ++ NEW_B_DIR=`echo $META_FILE | sed -e "s/$META_NAME/$NEW_NAME/" | sed -e 's/^\.\///'` ++ echo "META_FILE: $META_FILE" ++ echo "OLD_B_DIR: $OLD_B_DIR" ++ echo "NEW_NAME: $NEW_NAME" ++ echo "NEW_B_DIR: $NEW_B_DIR" ++ ++ pushd $BASE &> /dev/null ++ # remove an existing dir in storage ++ COMMAND="rm -rf $NEW_B_DIR"; exec_command ++ COMMAND="cp -R $OLD_B_DIR $NEW_B_DIR"; exec_command ++ echo "" ++ popd &> /dev/null ++ ++ # remember this dir to exclude it from deleting later ++ echo $NEW_B_DIR >> $TMP/$SKIP_DEL_LIST ++done ++ ++# delete all whiteouted files from base ++echo -e "\nDeleting whiteout'ed files from base file system..." ++find . -name $META_NAME -type f -print0 | xargs -0 -e grep -e '^D ' | sed -e 's/:D//' | while read ENTRY; do ++ META_FILE=`echo $ENTRY | cut -d ' ' -f 1` ++ DEL_NAME=`echo $ENTRY | cut -d ' ' -f 2` ++ DEL_FILE=`echo $META_FILE | sed -e "s/$META_NAME/$DEL_NAME/" | sed -e 's/^\.\///'` ++ grep -x $DEL_FILE $TMP/$SKIP_DEL_LIST &> /dev/null ++ if [ $? -ne 0 ]; then ++ pushd $BASE &> /dev/null ++ COMMAND="rm -rf $DEL_FILE"; exec_command ++ popd &> /dev/null ++ else ++ echo " excluding: $DEL_FILE as in skip-del-list." ++ fi ++done ++ ++# create all dirs and update permissions ++echo -e "\nSetting up directory structures in base file system..." ++find . -type d | sed -e 's/^\.\///' | while read DIR; do ++ PERMS=`stat -c %a $DIR` ++ DIR_UID=`stat -c %u $DIR` ++ DIR_GID=`stat -c %g $DIR` ++ pushd $BASE &> /dev/null ++ if ! [ -d $DIR ]; then ++ COMMAND="mkdir -p $DIR"; exec_command ++ fi ++ COMMAND="chmod $PERMS $DIR"; exec_command ++ COMMAND="chown $DIR_UID:$DIR_GID $DIR"; exec_command ++ popd &> /dev/null ++done ++ ++# merge all non-directory files ++echo -e "\nMerging all non-directory files...." ++for i in b c p f l s; do ++ find . -type $i | sed -e 's/^\.\///' | grep -v "$META_NAME" | while read FILE; do ++ pushd $BASE #&> /dev/null ++ COMMAND="cp -df $STO/$FILE $BASE/$FILE"; exec_command ++ popd &> /dev/null ++ done ++done ++popd &> /dev/null ++ ++#rm $TMP/$SKIP_DEL_LIST ++ ++echo "Done!" +diff -urN linux-2.6.21.1.old/fs/mini_fo/mini_fo-overlay linux-2.6.21.1.dev/fs/mini_fo/mini_fo-overlay +--- linux-2.6.21.1.old/fs/mini_fo/mini_fo-overlay 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/mini_fo-overlay 2007-05-26 21:01:26.167329264 +0200 +@@ -0,0 +1,130 @@ ++#!/bin/bash ++# ++# Copyright (C) 2005 Markus Klotzbuecher <mk@creamnet.de> ++# This program is free software; you can redistribute it and/or ++# modify it under the terms of the GNU General Public License ++# as published by the Free Software Foundation; either version ++# 2 of the License, or (at your option) any later version. ++# ++ ++HELP= ++SUFF= ++MNTP= ++MNT_DIR="/mnt" ++STO= ++STO_DIR="/tmp" ++BASE= ++ ++usage() ++{ ++cat <<EOF ++ ++Usage: $0 [-s suffix] [-d sto_dir_dir] [-m mount point] base_dir ++Version 0.1 ++ ++This script overlays the given base directory using the mini_fo file ++system. If only the base directory base_dir is given, $0 ++will use a storage directory called "sto-<base_dir_name>" in $STO_DIR, ++and mount point "mini_fo-<base_dir_dir>" in $MNT_DIR. ++ ++Options: ++ -s <suffix> ++ add given suffix to storage directory and the mount ++ point. This is usefull for overlaying one base directory ++ several times and avoiding conflicts with storage directory ++ names and mount points. ++ ++ -d <sto_dir_dir> ++ change the directory in which the storage directory will be ++ created (default is currently "$STO_DIR". ++ ++ -m <mount point> ++ use an alternative directory to create the mini_fo ++ mountpoint (default is currently "$MNT_DIR". ++ ++ -h displays this message. ++ ++EOF ++exit 1; ++} ++ ++while getopts hm:s:d: OPTS ++ do ++ case $OPTS in ++ s) SUFF="$OPTARG";; ++ d) STO_DIR="$OPTARG";; ++ m) MNT_DIR="$OPTARG";; ++ h) HELP="set";; ++ ?) usage ++ exit 1;; ++ esac ++done ++shift $(($OPTIND - 1)) ++ ++BASE="$1" ++ ++if [ "x$HELP" == "xset" ]; then ++ usage ++ exit -1 ++fi ++ ++# fix suffix ++if [ "x$SUFF" != "x" ]; then ++ SUFF="-$SUFF" ++fi ++ ++# kill trailing slashes ++MNT_DIR=${MNT_DIR%/} ++STO_DIR=${STO_DIR%/} ++BASE=${BASE%/} ++ ++ ++if ! [ -d "$BASE" ]; then ++ echo "invalid base dir $BASE, run $0 -h for help." ++ exit -1 ++fi ++ ++# check opts ++if ! [ -d "$MNT_DIR" ]; then ++ echo "invalid mount dir $MNT_DIR, run $0 -h for help." ++ exit -1 ++fi ++ ++if ! [ -d "$STO_DIR" ]; then ++ echo "invalid sto_dir_dir $STO_DIR, run $0 -h for help." ++ exit -1 ++fi ++ ++MNTP="$MNT_DIR/mini_fo-`basename $BASE`$SUFF" ++STO="$STO_DIR/sto-`basename $BASE`$SUFF" ++ ++# create the mount point if it doesn't exist ++mkdir -p $MNTP ++if [ $? -ne 0 ]; then ++ echo "Error, failed to create mount point $MNTP" ++fi ++ ++mkdir -p $STO ++if [ $? -ne 0 ]; then ++ echo "Error, failed to create storage dir $STO" ++fi ++ ++# check if fs is already mounted ++mount | grep mini_fo | grep $MNTP &> /dev/null ++if [ $? -eq 0 ]; then ++ echo "Error, existing mini_fo mount at $MNTP." ++ exit -1 ++fi ++ ++mount | grep mini_fo | grep $STO &> /dev/null ++if [ $? -eq 0 ]; then ++ echo "Error, $STO seems to be used already." ++ exit -1 ++fi ++ ++# mount ++mount -t mini_fo -o base=$BASE,sto=$STO $BASE $MNTP ++ ++if [ $? -ne 0 ]; then ++ echo "Error, mounting failed, maybe no permisson to mount?" ++fi +diff -urN linux-2.6.21.1.old/fs/mini_fo/mmap.c linux-2.6.21.1.dev/fs/mini_fo/mmap.c +--- linux-2.6.21.1.old/fs/mini_fo/mmap.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/mmap.c 2007-05-26 21:01:26.168329112 +0200 +@@ -0,0 +1,637 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif /* HAVE_CONFIG_H */ ++ ++#include "fist.h" ++#include "mini_fo.h" ++ ++ ++#ifdef FIST_COUNT_WRITES ++/* for counting writes in the middle vs. regular writes */ ++unsigned long count_writes = 0, count_writes_middle = 0; ++#endif /* FIST_COUNT_WRITES */ ++ ++/* forward declaration of commit write and prepare write */ ++STATIC int mini_fo_commit_write(file_t *file, page_t *page, unsigned from, unsigned to); ++STATIC int mini_fo_prepare_write(file_t *file, page_t *page, unsigned from, unsigned to); ++ ++ ++/* ++ * Function for handling creation of holes when lseek-ing past the ++ * end of the file and then writing some data. ++ */ ++int ++mini_fo_fill_zeros(file_t* file, page_t *page, unsigned from) ++{ ++ int err = 0; ++ dentry_t *dentry = file->f_dentry; ++ inode_t *inode = dentry->d_inode; ++ page_t *tmp_page; ++ int index; ++ ++ print_entry_location(); ++ ++ for (index = inode->i_size >> PAGE_CACHE_SHIFT; index < page->index; index++) { ++ tmp_page = mini_fo_get1page(file, index); ++ if (IS_ERR(tmp_page)) { ++ err = PTR_ERR(tmp_page); ++ goto out; ++ } ++ ++ /* ++ * zero out rest of the contents of the page between the appropriate ++ * offsets. ++ */ ++ memset((char*)page_address(tmp_page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, PAGE_CACHE_SIZE - (inode->i_size & ~PAGE_CACHE_MASK)); ++ ++ if (! (err = mini_fo_prepare_write(file, tmp_page, 0, PAGE_CACHE_SIZE))) ++ err = mini_fo_commit_write(file, tmp_page, 0, PAGE_CACHE_SIZE); ++ ++ page_cache_release(tmp_page); ++ if (err < 0) ++ goto out; ++ if (current->need_resched) ++ schedule(); ++ } ++ ++ /* zero out appropriate parts of last page */ ++ ++ /* ++ * if the encoding type is block, then adjust the 'from' (where the ++ * zeroing will start) offset appropriately ++ */ ++ from = from & (~(FIST_ENCODING_BLOCKSIZE - 1)); ++ ++ if ((from - (inode->i_size & ~PAGE_CACHE_MASK)) > 0) { ++ ++ memset((char*)page_address(page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, from - (inode->i_size & ~PAGE_CACHE_MASK)); ++ if (! (err = mini_fo_prepare_write(file, page, 0, PAGE_CACHE_SIZE))) ++ err = mini_fo_commit_write(file, page, 0, PAGE_CACHE_SIZE); ++ ++ if (err < 0) ++ goto out; ++ if (current->need_resched) ++ schedule(); ++ } ++ ++ out: ++ print_exit_status(err); ++ return err; ++} ++ ++ ++ ++STATIC int ++mini_fo_writepage(page_t *page) ++{ ++ int err = -EIO; ++ inode_t *inode; ++ inode_t *hidden_inode; ++ page_t *hidden_page; ++ char *kaddr, *hidden_kaddr; ++ ++ print_entry_location(); ++ ++ inode = page->mapping->host; ++ hidden_inode = itohi(inode); ++ ++ /* ++ * writepage is called when shared mmap'ed files need to write ++ * their pages, while prepare/commit_write are called from the ++ * non-paged write() interface. (However, in 2.3 the two interfaces ++ * share the same cache, while in 2.2 they didn't.) ++ * ++ * So we pretty much have to duplicate much of what commit_write does. ++ */ ++ ++ /* find lower page (returns a locked page) */ ++ hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index); ++ if (!hidden_page) ++ goto out; ++ ++ /* get page address, and encode it */ ++ kaddr = (char *) kmap(page); ++ hidden_kaddr = (char*) kmap(hidden_page); ++ mini_fo_encode_block(kaddr, hidden_kaddr, PAGE_CACHE_SIZE, inode, inode->i_sb, page->index); ++ /* if encode_block could fail, then return error */ ++ kunmap(page); ++ kunmap(hidden_page); ++ ++ /* call lower writepage (expects locked page) */ ++ err = hidden_inode->i_mapping->a_ops->writepage(hidden_page); ++ ++ /* ++ * update mtime and ctime of lower level file system ++ * mini_fo' mtime and ctime are updated by generic_file_write ++ */ ++ hidden_inode->i_mtime = hidden_inode->i_ctime = CURRENT_TIME; ++ ++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,1) ++ UnlockPage(hidden_page); /* b/c grab_cache_page locked it */ ++# endif /* kernel older than 2.4.1 */ ++ page_cache_release(hidden_page); /* b/c grab_cache_page increased refcnt */ ++ ++ if (err) ++ ClearPageUptodate(page); ++ else ++ SetPageUptodate(page); ++ out: ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,1) ++ UnlockPage(page); ++# endif /* kernel 2.4.1 and newer */ ++ print_exit_status(err); ++ return err; ++} ++ ++ ++/* ++ * get one page from cache or lower f/s, return error otherwise. ++ * returns unlocked, up-to-date page (if ok), with increased refcnt. ++ */ ++page_t * ++mini_fo_get1page(file_t *file, int index) ++{ ++ page_t *page; ++ dentry_t *dentry; ++ inode_t *inode; ++ struct address_space *mapping; ++ int err; ++ ++ print_entry_location(); ++ ++ dentry = file->f_dentry; /* CPW: Moved below print_entry_location */ ++ inode = dentry->d_inode; ++ mapping = inode->i_mapping; ++ ++ fist_dprint(8, "%s: read page index %d pid %d\n", __FUNCTION__, index, current->pid); ++ if (index < 0) { ++ printk("%s BUG: index=%d\n", __FUNCTION__, index); ++ page = ERR_PTR(-EIO); ++ goto out; ++ } ++ page = read_cache_page(mapping, ++ index, ++ (filler_t *) mapping->a_ops->readpage, ++ (void *) file); ++ if (IS_ERR(page)) ++ goto out; ++ wait_on_page(page); ++ if (!Page_Uptodate(page)) { ++ lock_page(page); ++ err = mapping->a_ops->readpage(file, page); ++ if (err) { ++ page = ERR_PTR(err); ++ goto out; ++ } ++ wait_on_page(page); ++ if (!Page_Uptodate(page)) { ++ page = ERR_PTR(-EIO); ++ goto out; ++ } ++ } ++ ++ out: ++ print_exit_pointer(page); ++ return page; ++} ++ ++ ++/* ++ * get one page from cache or lower f/s, return error otherwise. ++ * similar to get1page, but doesn't guarantee that it will return ++ * an unlocked page. ++ */ ++page_t * ++mini_fo_get1page_cached(file_t *file, int index) ++{ ++ page_t *page; ++ dentry_t *dentry; ++ inode_t *inode; ++ struct address_space *mapping; ++ int err; ++ ++ print_entry_location(); ++ ++ dentry = file->f_dentry; /* CPW: Moved below print_entry_location */ ++ inode = dentry->d_inode; ++ mapping = inode->i_mapping; ++ ++ fist_dprint(8, "%s: read page index %d pid %d\n", __FUNCTION__, index, current->pid); ++ if (index < 0) { ++ printk("%s BUG: index=%d\n", __FUNCTION__, index); ++ page = ERR_PTR(-EIO); ++ goto out; ++ } ++ page = read_cache_page(mapping, ++ index, ++ (filler_t *) mapping->a_ops->readpage, ++ (void *) file); ++ if (IS_ERR(page)) ++ goto out; ++ ++ out: ++ print_exit_pointer(page); ++ return page; ++} ++ ++ ++/* ++ * readpage is called from generic_page_read and the fault handler. ++ * If your file system uses generic_page_read for the read op, it ++ * must implement readpage. ++ * ++ * Readpage expects a locked page, and must unlock it. ++ */ ++STATIC int ++mini_fo_do_readpage(file_t *file, page_t *page) ++{ ++ int err = -EIO; ++ dentry_t *dentry; ++ file_t *hidden_file = NULL; ++ dentry_t *hidden_dentry; ++ inode_t *inode; ++ inode_t *hidden_inode; ++ char *page_data; ++ page_t *hidden_page; ++ char *hidden_page_data; ++ int real_size; ++ ++ print_entry_location(); ++ ++ dentry = file->f_dentry; /* CPW: Moved below print_entry_location */ ++ if (ftopd(file) != NULL) ++ hidden_file = ftohf(file); ++ hidden_dentry = dtohd(dentry); ++ inode = dentry->d_inode; ++ hidden_inode = itohi(inode); ++ ++ fist_dprint(7, "%s: requesting page %d from file %s\n", __FUNCTION__, page->index, dentry->d_name.name); ++ ++ MALLOC_PAGE_POINTERS(hidden_pages, num_hidden_pages); ++ MALLOC_PAGEDATA_POINTERS(hidden_pages_data, num_hidden_pages); ++ FOR_EACH_PAGE ++ CURRENT_HIDDEN_PAGE = NULL; ++ ++ /* find lower page (returns a locked page) */ ++ FOR_EACH_PAGE { ++ fist_dprint(8, "%s: Current page index = %d\n", __FUNCTION__, CURRENT_HIDDEN_PAGEINDEX); ++ CURRENT_HIDDEN_PAGE = read_cache_page(hidden_inode->i_mapping, ++ CURRENT_HIDDEN_PAGEINDEX, ++ (filler_t *) hidden_inode->i_mapping->a_ops->readpage, ++ (void *) hidden_file); ++ if (IS_ERR(CURRENT_HIDDEN_PAGE)) { ++ err = PTR_ERR(CURRENT_HIDDEN_PAGE); ++ CURRENT_HIDDEN_PAGE = NULL; ++ goto out_release; ++ } ++ } ++ ++ /* ++ * wait for the page data to show up ++ * (signaled by readpage as unlocking the page) ++ */ ++ FOR_EACH_PAGE { ++ wait_on_page(CURRENT_HIDDEN_PAGE); ++ if (!Page_Uptodate(CURRENT_HIDDEN_PAGE)) { ++ /* ++ * call readpage() again if we returned from wait_on_page with a ++ * page that's not up-to-date; that can happen when a partial ++ * page has a few buffers which are ok, but not the whole ++ * page. ++ */ ++ lock_page(CURRENT_HIDDEN_PAGE); ++ err = hidden_inode->i_mapping->a_ops->readpage(hidden_file, ++ CURRENT_HIDDEN_PAGE); ++ if (err) { ++ CURRENT_HIDDEN_PAGE = NULL; ++ goto out_release; ++ } ++ wait_on_page(CURRENT_HIDDEN_PAGE); ++ if (!Page_Uptodate(CURRENT_HIDDEN_PAGE)) { ++ err = -EIO; ++ goto out_release; ++ } ++ } ++ } ++ ++ /* map pages, get their addresses */ ++ page_data = (char *) kmap(page); ++ FOR_EACH_PAGE ++ CURRENT_HIDDEN_PAGEDATA = (char *) kmap(CURRENT_HIDDEN_PAGE); ++ ++ /* if decode_block could fail, then return error */ ++ err = 0; ++ real_size = hidden_inode->i_size - (page->index << PAGE_CACHE_SHIFT); ++ if (real_size <= 0) ++ memset(page_data, 0, PAGE_CACHE_SIZE); ++ else if (real_size < PAGE_CACHE_SIZE) { ++ mini_fo_decode_block(hidden_page_data, page_data, real_size, inode, inode->i_sb, page->index); ++ memset(page_data + real_size, 0, PAGE_CACHE_SIZE - real_size); ++ } else ++ mini_fo_decode_block(hidden_page_data, page_data, PAGE_CACHE_SIZE, inode, inode->i_sb, page->index); ++ ++ FOR_EACH_PAGE ++ kunmap(CURRENT_HIDDEN_PAGE); ++ kunmap(page); ++ ++ out_release: ++ FOR_EACH_PAGE ++ if (CURRENT_HIDDEN_PAGE) ++ page_cache_release(CURRENT_HIDDEN_PAGE); /* undo read_cache_page */ ++ ++ FREE_PAGE_POINTERS(hidden_pages, num_hidden_pages); ++ FREE_PAGEDATA_POINTERS(hidden_pages_data, num_hidden_pages); ++ ++ out: ++ if (err == 0) ++ SetPageUptodate(page); ++ else ++ ClearPageUptodate(page); ++ ++ print_exit_status(err); ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_readpage(file_t *file, page_t *page) ++{ ++ int err; ++ print_entry_location(); ++ ++ err = mini_fo_do_readpage(file, page); ++ ++ /* ++ * we have to unlock our page, b/c we _might_ have gotten a locked page. ++ * but we no longer have to wakeup on our page here, b/c UnlockPage does ++ * it ++ */ ++ UnlockPage(page); ++ ++ print_exit_status(err); ++ return err; ++} ++ ++ ++STATIC int ++mini_fo_prepare_write(file_t *file, page_t *page, unsigned from, unsigned to) ++{ ++ int err = 0; ++ ++ print_entry_location(); ++ ++ /* ++ * we call kmap(page) only here, and do the kunmap ++ * and the actual downcalls, including unlockpage and uncache ++ * in commit_write. ++ */ ++ kmap(page); ++ ++ /* fast path for whole page writes */ ++ if (from == 0 && to == PAGE_CACHE_SIZE) ++ goto out; ++ /* read the page to "revalidate" our data */ ++ /* call the helper function which doesn't unlock the page */ ++ if (!Page_Uptodate(page)) ++ err = mini_fo_do_readpage(file, page); ++ ++ out: ++ print_exit_status(err); ++ return err; ++} ++ ++ ++ ++STATIC int ++mini_fo_commit_write(file_t *file, page_t *page, unsigned from, unsigned to) ++{ ++ int err = -ENOMEM; ++ inode_t *inode; ++ inode_t *hidden_inode; ++ page_t *hidden_page; ++ file_t *hidden_file = NULL; ++ loff_t pos; ++ unsigned bytes = to - from; ++ unsigned hidden_from, hidden_to, hidden_bytes; ++ ++ print_entry_location(); ++ ++ inode = page->mapping->host; /* CPW: Moved below print_entry_location */ ++ hidden_inode = itohi(inode); ++ ++ ASSERT(file != NULL); ++ /* ++ * here we have a kmapped page, with data from the user copied ++ * into it. we need to encode_block it, and then call the lower ++ * commit_write. We also need to simulate same behavior of ++ * generic_file_write, and call prepare_write on the lower f/s first. ++ */ ++#ifdef FIST_COUNT_WRITES ++ count_writes++; ++# endif /* FIST_COUNT_WRITES */ ++ ++ /* this is append and/or extend -- we can't have holes so fill them in */ ++ if (page->index > (hidden_inode->i_size >> PAGE_CACHE_SHIFT)) { ++ page_t *tmp_page; ++ int index; ++ for (index = hidden_inode->i_size >> PAGE_CACHE_SHIFT; index < page->index; index++) { ++ tmp_page = mini_fo_get1page(file, index); ++ if (IS_ERR(tmp_page)) { ++ err = PTR_ERR(tmp_page); ++ goto out; ++ } ++ /* zero out the contents of the page at the appropriate offsets */ ++ memset((char*)page_address(tmp_page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, PAGE_CACHE_SIZE - (inode->i_size & ~PAGE_CACHE_MASK)); ++ if (!(err = mini_fo_prepare_write(file, tmp_page, 0, PAGE_CACHE_SIZE))) ++ err = mini_fo_commit_write(file, tmp_page, 0, PAGE_CACHE_SIZE); ++ page_cache_release(tmp_page); ++ if (err < 0) ++ goto out; ++ if (current->need_resched) ++ schedule(); ++ } ++ } ++ ++ if (ftopd(file) != NULL) ++ hidden_file = ftohf(file); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_inode->i_mutex); ++#else ++ down(&hidden_inode->i_sem); ++#endif ++ /* find lower page (returns a locked page) */ ++ hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index); ++ if (!hidden_page) ++ goto out; ++ ++#if FIST_ENCODING_BLOCKSIZE > 1 ++# error encoding_blocksize greater than 1 is not yet supported ++# endif /* FIST_ENCODING_BLOCKSIZE > 1 */ ++ ++ hidden_from = from & (~(FIST_ENCODING_BLOCKSIZE - 1)); ++ hidden_to = ((to + FIST_ENCODING_BLOCKSIZE - 1) & (~(FIST_ENCODING_BLOCKSIZE - 1))); ++ if ((page->index << PAGE_CACHE_SHIFT) + to > hidden_inode->i_size) { ++ ++ /* ++ * if this call to commit_write had introduced holes and the code ++ * for handling holes was invoked, then the beginning of this page ++ * must be zeroed out ++ * zero out bytes from 'size_of_file%pagesize' to 'from'. ++ */ ++ if ((hidden_from - (inode->i_size & ~PAGE_CACHE_MASK)) > 0) ++ memset((char*)page_address(page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, hidden_from - (inode->i_size & ~PAGE_CACHE_MASK)); ++ ++ } ++ hidden_bytes = hidden_to - hidden_from; ++ ++ /* call lower prepare_write */ ++ err = -EINVAL; ++ if (hidden_inode->i_mapping && ++ hidden_inode->i_mapping->a_ops && ++ hidden_inode->i_mapping->a_ops->prepare_write) ++ err = hidden_inode->i_mapping->a_ops->prepare_write(hidden_file, ++ hidden_page, ++ hidden_from, ++ hidden_to); ++ if (err) ++ /* don't leave locked pages behind, esp. on an ENOSPC */ ++ goto out_unlock; ++ ++ fist_dprint(8, "%s: encoding %d bytes\n", __FUNCTION__, hidden_bytes); ++ mini_fo_encode_block((char *) page_address(page) + hidden_from, (char*) page_address(hidden_page) + hidden_from, hidden_bytes, inode, inode->i_sb, page->index); ++ /* if encode_block could fail, then goto unlock and return error */ ++ ++ /* call lower commit_write */ ++ err = hidden_inode->i_mapping->a_ops->commit_write(hidden_file, ++ hidden_page, ++ hidden_from, ++ hidden_to); ++ ++ if (err < 0) ++ goto out_unlock; ++ ++ err = bytes; /* convert error to no. of bytes */ ++ ++ inode->i_blocks = hidden_inode->i_blocks; ++ /* we may have to update i_size */ ++ pos = (page->index << PAGE_CACHE_SHIFT) + to; ++ if (pos > inode->i_size) ++ inode->i_size = pos; ++ ++ /* ++ * update mtime and ctime of lower level file system ++ * mini_fo' mtime and ctime are updated by generic_file_write ++ */ ++ hidden_inode->i_mtime = hidden_inode->i_ctime = CURRENT_TIME; ++ ++ mark_inode_dirty_sync(inode); ++ ++ out_unlock: ++ UnlockPage(hidden_page); ++ page_cache_release(hidden_page); ++ kunmap(page); /* kmap was done in prepare_write */ ++ out: ++ /* we must set our page as up-to-date */ ++ if (err < 0) ++ ClearPageUptodate(page); ++ else ++ SetPageUptodate(page); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_inode->i_mutex); ++#else ++ up(&hidden_inode->i_sem); ++#endif ++ print_exit_status(err); ++ return err; /* assume all is ok */ ++} ++ ++ ++STATIC int ++mini_fo_bmap(struct address_space *mapping, long block) ++{ ++ int err = 0; ++ inode_t *inode; ++ inode_t *hidden_inode; ++ ++ print_entry_location(); ++ ++ inode = (inode_t *) mapping->host; ++ hidden_inode = itohi(inode); ++ ++ if (hidden_inode->i_mapping->a_ops->bmap) ++ err = hidden_inode->i_mapping->a_ops->bmap(hidden_inode->i_mapping, block); ++ print_exit_location(); ++ return err; ++} ++ ++ ++/* ++ * This function is copied verbatim from mm/filemap.c. ++ * XXX: It should be simply moved to some header file instead -- bug Al about it! ++ */ ++static inline int sync_page(struct page *page) ++{ ++ struct address_space *mapping = page->mapping; ++ ++ if (mapping && mapping->a_ops && mapping->a_ops->sync_page) ++ return mapping->a_ops->sync_page(page); ++ return 0; ++} ++ ++ ++/* ++ * XXX: we may not need this function if not FIST_FILTER_DATA. ++ * FIXME: for FIST_FILTER_SCA, get all lower pages and sync them each. ++ */ ++STATIC int ++mini_fo_sync_page(page_t *page) ++{ ++ int err = 0; ++ inode_t *inode; ++ inode_t *hidden_inode; ++ page_t *hidden_page; ++ ++ print_entry_location(); ++ ++ inode = page->mapping->host; /* CPW: Moved below print_entry_location */ ++ hidden_inode = itohi(inode); ++ ++ /* find lower page (returns a locked page) */ ++ hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index); ++ if (!hidden_page) ++ goto out; ++ ++ err = sync_page(hidden_page); ++ ++ UnlockPage(hidden_page); /* b/c grab_cache_page locked it */ ++ page_cache_release(hidden_page); /* b/c grab_cache_page increased refcnt */ ++ ++ out: ++ print_exit_status(err); ++ return err; ++} +diff -urN linux-2.6.21.1.old/fs/mini_fo/README linux-2.6.21.1.dev/fs/mini_fo/README +--- linux-2.6.21.1.old/fs/mini_fo/README 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/README 2007-05-26 21:01:26.168329112 +0200 +@@ -0,0 +1,163 @@ ++README for the mini_fo overlay file system ++========================================= ++ ++ ++WHAT IS MINI_FO? ++---------------- ++ ++mini_fo is a virtual kernel file system that can make read-only ++file systems writable. This is done by redirecting modifying operations ++to a writeable location called "storage directory", and leaving the ++original data in the "base directory" untouched. When reading, the ++file system merges the modifed and original data so that only the ++newest versions will appear. This occurs transparently to the user, ++who can access the data like on any other read-write file system. ++ ++Base and storage directories may be located on the same or on ++different partitions and may be of different file system types. While ++the storage directory obviously needs to be writable, the base may or ++may not be writable, what doesn't matter as it will no be modified ++anyway. ++ ++ ++WHAT IS GOOD FOR? ++----------------- ++ ++The primary purpose of the mini_fo file system is to allow easy ++software updates to embedded systems, that often store their root ++file system in a read-only flash file system, but there are many ++more as for example sandboxing, or for allowing live-cds to ++permanently store information. ++ ++ ++BUILDING ++-------- ++This should be simple. Adjust the Makefile to point to the correct ++kernel headers you want to build the module for. Then: ++ ++ # make ++ ++should build "mini_fo.o" for a 2.4 kernel or "mini_fo.ko" for a 2.6 ++kernel. ++ ++If you are building the module for you current kernel, you can install ++the module (as root): ++ ++ # make install ++ ++or uninstall with ++ ++ # make uninstall ++ ++ ++USING THE FILE SYSTEM ++-------------------- ++ ++the general mount syntax is: ++ ++ mount -t mini_fo -o base=<base directory>,sto=<storage directory>\ ++ <base directory> <mount point> ++ ++Example: ++ ++You have mounted a cdrom to /mnt/cdrom and want to modifiy some files ++on it: ++ ++load the module (as root) ++ ++ # insmod mini_fo.o for a 2.4 kernel or ++ ++ # insmod mini_fo.ko for a 2.6 kernel ++ ++ ++create a storage dir in tmp and a mountpoint for mini_fo: ++ ++ # mkdir /tmp/sto ++ # mkdir /mnt/mini_fo ++ ++and mount the mini_fo file system: ++ ++ # mount -t mini_fo -o base=/mnt/cdrom,sto=/tmp/sto /mnt/cdrom /mnt/mini_fo ++ ++ ++Now the data stored on the cd can be accessed via the mini_fo ++mountpoint just like any read-write file system, files can be modified ++and deleted, new ones can be created and so on. When done unmount the ++file system: ++ ++ # unmount /mnt/mini_fo ++ ++Note that if the file system is mounted again using the same storage ++file system, of course it will appear in the modified state again. If ++you remount it using an new empty storage directory, it will be ++unmodified. Therefore by executing: ++ ++ # cd /tmp/sto ++ # rm -rf * ++ ++you can nuke all the changes you made to the original file system. But ++ remember NEVER do this while the mini_fo file system is mounted! ++ ++ ++Alternatively you can use the mini_fo-overlay bash script, that ++simplifies managing mini_fo mounts. See TOOLS Section. ++ ++ ++TOOLS ++----- ++ ++mini_fo-merge (experimental): ++ ++This is a bash script that will merge changes contained in the storage ++directory back to the base directory. This allows mini_fo to function ++as a cache file system by overlaying a slow (network, ...) file system ++and using a fast (ramdisk, ...) as storage. When done, changes can be ++merged back to the (slow) base with mini_fo-merge. See "mini_fo-merge ++-h" for details. ++ ++It can be usefull for merging changes back after a successfull test ++(patches, software updates...) ++ ++ ++mini_fo-overlay: ++ ++This bash script simplifies managing one or more mini_fo mounts. For ++overlaying a directory called "basedir1", you can just call: ++ ++ # mini_fo-overlay basedir1 ++ ++This will mount mini_fo with "basedir1" as base, "/tmp/sto-basedir1/" ++as storage to "/mnt/mini_fo-basedir1/". It has more options though, ++type "mini_fo-overlay -h" for details. ++ ++ ++DOCUMENTATION, REPORTING BUGS, GETTING HELP ++------------------------------------------- ++ ++Please visit the mini_fo project page at: ++ ++http://www.denx.de/twiki/bin/view/Know/MiniFOHome ++ ++ ++WARNINGS ++-------- ++ ++Never modify the base or the storage directorys while the mini_fo ++file system is mounted, or you might crash you system. Simply accessing ++and reading should not cause any trouble. ++ ++Exporting a mini_fo mount point via NFS has not been tested, and may ++or may not work. ++ ++Check the RELEASE_NOTES for details on bugs and features. ++ ++ ++ ++Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ ++This program is free software; you can redistribute it and/or ++modify it under the terms of the GNU General Public License ++as published by the Free Software Foundation; either version ++2 of the License, or (at your option) any later version. ++ ++ +diff -urN linux-2.6.21.1.old/fs/mini_fo/RELEASE_NOTES linux-2.6.21.1.dev/fs/mini_fo/RELEASE_NOTES +--- linux-2.6.21.1.old/fs/mini_fo/RELEASE_NOTES 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/RELEASE_NOTES 2007-05-26 21:01:26.168329112 +0200 +@@ -0,0 +1,111 @@ ++Release: mini_fo-0.6.1 (v0-6-1) ++Date: 21.09.2005 ++ ++ ++Changes: ++-------- ++v0-6-1: ++ ++- bugfixes (see ChangeLog) ++ ++- two helper scripts "mini_fo_merge" and "mini_fo_overlay" (see ++ README for details). ++ ++v0-6-0: ++ ++- Support for 2.4 and 2.6 (see Makefile) ++ ++- Partial hard link support (creating works as expected, but already ++ existing links in the base file system will be treated as if they ++ were individual files). ++ ++- Various bugfixes and cleanups. ++ ++ ++v0-6-0-pre1: ++ ++- This is mini_fo-0-6-0-pre1! This release is a complete rewrite of ++ many vital mini_fo parts such as the old whiteout list code which ++ has been replaced by the new META subsystem. ++ ++- Light weight directory renaming implemented. This means if a ++ directory is renamed via the mini_fo filesystem this will no longer ++ result in a complete copy in storage, instead only one empty ++ directory will be created. All base filed contained in the original ++ directory stay there until modified. ++ ++- Special files (creating, renaming, deleting etc.) now working. ++ ++- Many bugfixes and cleanup, mini_fo is now a lot more stable. ++ ++ ++v0-5-10: ++ ++- Final release of the 0-5-* versions. Next will be a complete rewrite ++ of many features. This release contains several bugfixes related to ++ directory renaming. ++ ++ ++v0-5-10-pre6: ++ ++- Lots of cleanup and several bugfixes related to directory deleting ++ ++- Directory renaming suddenly works, what is most likely due to the ++ fact tha that "mv" is smart: if the classic rename doesn't work it ++ will assume that source and target file are on different fs and will ++ copy the directory and try to remove the source directory. Until ++ directory removing wasn't implemented, it would fail to do this and ++ rollback. ++ So, directory renaming works for now, but it doesn't yet do what you ++ would expect from a overlay fs, so use with care. ++ ++ ++v0-5-10-pre5: ++ ++- implemented directory deleting ++- made parsing of mount options more stable ++- New format of mount options! (See README) ++- I can't reproduce the unknown panic with 2.4.25 anymore, so I'll ++ happily assume it never existed! ++ ++ ++Implemented features: ++--------------------- ++ ++- creating hard links (see BUGS on already existing hard links) ++- lightweight directory renaming ++- renaming device files, pipes, sockets, etc. ++- creating, renaming, deleting of special files ++- deleting directorys ++- general directory reading (simple "ls" ) ++- creating files in existing directorys ++- creating directorys ++- renaming files. ++- reading and writing files (involves opening) ++- appending to files (creates copy in storage) ++- deleting files ++- llseek works too, what allows editors to work ++- persistency (a deleted file stay deleted over remounts) ++- use of symbolic links ++- creating of device files ++ ++ ++Not (yet) implemented features: ++------------------------------- ++ ++- full hard link support. ++ ++ ++ ++BUGS: ++----- ++ ++Hard links in the base file system will be treated as individual ++files, not as links to one inode. ++ ++The main problem with hard links isn't allowing to create them, but ++their pure existence. If you modify a base hard link, the changes made ++will only show up on this link, the other link will remain in the ++original state. I hope to fix this someday. Please note that this does ++not effect the special hard links '.' and '..', that are handled ++seperately by the lower fs. +diff -urN linux-2.6.21.1.old/fs/mini_fo/state.c linux-2.6.21.1.dev/fs/mini_fo/state.c +--- linux-2.6.21.1.old/fs/mini_fo/state.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/state.c 2007-05-26 21:01:26.169328960 +0200 +@@ -0,0 +1,620 @@ ++/* ++ * Copyright (C) 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif /* HAVE_CONFIG_H */ ++ ++#include "fist.h" ++#include "mini_fo.h" ++ ++ ++/* create the storage file, setup new states */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++int create_sto_reg_file(dentry_t *dentry, int mode, struct nameidata *nd) ++#else ++int create_sto_reg_file(dentry_t *dentry, int mode) ++#endif ++{ ++ int err = 0; ++ inode_t *dir; ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++ ++ if(exists_in_storage(dentry)) { ++ printk(KERN_CRIT "mini_fo: create_sto_file: wrong type or state.\n"); ++ err = -EINVAL; ++ goto out; ++ } ++ err = get_neg_sto_dentry(dentry); ++ ++ if (err) { ++ printk(KERN_CRIT "mini_fo: create_sto_file: ERROR getting neg. sto dentry.\n"); ++ goto out; ++ } ++ ++ dir = dentry->d_parent->d_inode; ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* lock parent */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ err = PTR_ERR(hidden_sto_dir_dentry); ++ if (IS_ERR(hidden_sto_dir_dentry)) ++ goto out; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ err = vfs_create(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ mode, nd); ++#else ++ err = vfs_create(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ mode); ++#endif ++ if(err) { ++ printk(KERN_CRIT "mini_fo: create_sto_file: ERROR creating sto file.\n"); ++ goto out_lock; ++ } ++ ++ if(!dtohd2(dentry)->d_inode) { ++ printk(KERN_CRIT "mini_fo: create_sto_file: ERROR creating sto file [2].\n"); ++ err = -EINVAL; ++ goto out_lock; ++ } ++ ++ /* interpose the new inode */ ++ if(dtost(dentry) == DELETED) { ++ dtost(dentry) = DEL_REWRITTEN; ++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ else if(dtost(dentry) == NON_EXISTANT) { ++ dtost(dentry) = CREATED; ++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ else if(dtost(dentry) == UNMODIFIED) { ++ dtost(dentry) = MODIFIED; ++ /* interpose on new inode */ ++ if(itohi2(dentry->d_inode) != NULL) { ++ printk(KERN_CRIT "mini_fo: create_sto_file: invalid inode detected.\n"); ++ err = -EINVAL; ++ goto out_lock; ++ } ++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode); ++ } ++ fist_copy_attr_timesizes(dentry->d_parent->d_inode, ++ hidden_sto_dir_dentry->d_inode); ++ ++ out_lock: ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ out: ++ return err; ++} ++ ++/* create the sto dir, setup states */ ++int create_sto_dir(dentry_t *dentry, int mode) ++{ ++ int err = 0; ++ inode_t *dir; ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++ ++ /* had to take the "!S_ISDIR(mode))" check out, because it failed */ ++ if(exists_in_storage(dentry)) { ++ printk(KERN_CRIT "mini_fo: create_sto_dir: wrong type or state.\\ ++n"); ++ err = -EINVAL; ++ goto out; ++ } ++ ++ err = get_neg_sto_dentry(dentry); ++ if(err) { ++ err = -EINVAL; ++ goto out; ++ } ++ ++ dir = dentry->d_parent->d_inode; ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ err = PTR_ERR(hidden_sto_dir_dentry); ++ if (IS_ERR(hidden_sto_dir_dentry)) ++ goto out; ++ ++ err = vfs_mkdir(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ mode); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: create_sto_dir: ERROR creating sto dir.\n"); ++ goto out_lock; ++ } ++ ++ if(!dtohd2(dentry)->d_inode) { ++ printk(KERN_CRIT "mini_fo: create_sto_dir: ERROR creating sto dir [2].\n"); ++ err = -EINVAL; ++ goto out_lock; ++ } ++ ++ /* interpose the new inode */ ++ if(dtost(dentry) == DELETED) { ++ dtost(dentry) = DEL_REWRITTEN; ++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ else if(dtopd(dentry)->state == NON_EXISTANT) { ++ dtopd(dentry)->state = CREATED; ++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ else if(dtopd(dentry)->state == UNMODIFIED) { ++ dtopd(dentry)->state = MODIFIED; ++ /* interpose on new inode */ ++ if(itohi2(dentry->d_inode) != NULL) { ++ printk(KERN_CRIT "mini_fo: create_sto_dir: ERROR, invalid inode detected.\n"); ++ err = -EINVAL; ++ goto out_lock; ++ } ++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode); ++ } ++ ++ fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode); ++ ++ /* initalize the wol list */ ++ itopd(dentry->d_inode)->deleted_list_size = -1; ++ itopd(dentry->d_inode)->renamed_list_size = -1; ++ meta_build_lists(dentry); ++ ++ ++ out_lock: ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ out: ++ return err; ++} ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++int create_sto_nod(dentry_t *dentry, int mode, dev_t dev) ++#else ++int create_sto_nod(dentry_t *dentry, int mode, int dev) ++#endif ++{ ++ int err = 0; ++ inode_t *dir; ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++ ++ if(exists_in_storage(dentry)) { ++ err = -EEXIST; ++ goto out; ++ } ++ err = get_neg_sto_dentry(dentry); ++ ++ if (err) { ++ printk(KERN_CRIT "mini_fo: create_sto_nod: ERROR getting neg. sto dentry.\n"); ++ goto out; ++ } ++ ++ dir = dentry->d_parent->d_inode; ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* lock parent */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ err = PTR_ERR(hidden_sto_dir_dentry); ++ if (IS_ERR(hidden_sto_dir_dentry)) ++ goto out; ++ ++ err = vfs_mknod(hidden_sto_dir_dentry->d_inode, hidden_sto_dentry, mode, dev); ++ if(err) ++ goto out_lock; ++ ++ if(!dtohd2(dentry)->d_inode) { ++ printk(KERN_CRIT "mini_fo: create_sto_nod: creating storage inode failed [1].\n"); ++ err = -EINVAL; /* return something indicating failure */ ++ goto out_lock; ++ } ++ ++ /* interpose the new inode */ ++ if(dtost(dentry) == DELETED) { ++ dtost(dentry) = DEL_REWRITTEN; ++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ else if(dtost(dentry) == NON_EXISTANT) { ++ dtost(dentry) = CREATED; ++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0); ++ if(err) ++ goto out_lock; ++ } ++ else if(dtost(dentry) == UNMODIFIED) { ++ dtost(dentry) = MODIFIED; ++ /* interpose on new inode */ ++ if(itohi2(dentry->d_inode) != NULL) { ++ printk(KERN_CRIT "mini_fo: create_sto_nod: error, invalid inode detected.\n"); ++ err = -EINVAL; ++ goto out_lock; ++ } ++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode); ++ } ++ ++ fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode); ++ ++ out_lock: ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ out: ++ return err; ++} ++ ++ ++/* unimplemented (and possibly not usefull): ++ ++ nondir-del_to_del_rew ++ nondir-non_exist_to_creat ++ ++ dir-unmod_to_del ++ dir-mod_to_del ++ dir-creat_to_del ++ dir-del_rew_to_del ++ dir-del_to_del_rew ++ dir-non_exist_to_creat ++*/ ++ ++ ++/* bring a file of any type from state UNMODIFIED to MODIFIED */ ++int nondir_unmod_to_mod(dentry_t *dentry, int cp_flag) ++{ ++ int err = 0; ++ struct vfsmount *tgt_mnt; ++ struct vfsmount *src_mnt; ++ dentry_t *tgt_dentry; ++ dentry_t *src_dentry; ++ dentry_t *hidden_sto_dentry; ++ dentry_t *hidden_sto_dir_dentry; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if((dtost(dentry) != UNMODIFIED) || ++ S_ISDIR(dentry->d_inode->i_mode)) { ++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \ ++ wrong type or state.\n"); ++ err = -1; ++ goto out; ++ } ++ err = get_neg_sto_dentry(dentry); ++ ++ if (err) { ++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \ ++ ERROR getting neg. sto dentry.\n"); ++ goto out; ++ } ++ ++ /* create sto file */ ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* lock parent */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ err = PTR_ERR(hidden_sto_dir_dentry); ++ if (IS_ERR(hidden_sto_dir_dentry)) ++ goto out; ++ ++ /* handle different types of nondirs */ ++ if(S_ISCHR(dentry->d_inode->i_mode) || ++ S_ISBLK(dentry->d_inode->i_mode)) { ++ err = vfs_mknod(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ dtohd(dentry)->d_inode->i_mode, ++ dtohd(dentry)->d_inode->i_rdev); ++ } ++ ++ else if(S_ISREG(dentry->d_inode->i_mode)) { ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ err = vfs_create(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ dtohd(dentry)->d_inode->i_mode, NULL); ++#else ++ err = vfs_create(hidden_sto_dir_dentry->d_inode, ++ hidden_sto_dentry, ++ dtohd(dentry)->d_inode->i_mode); ++#endif ++ } ++ if(err) { ++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \ ++ ERROR creating sto file.\n"); ++ goto out_lock; ++ } ++ ++ /* interpose on new inode */ ++ if(itohi2(dentry->d_inode) != NULL) { ++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \ ++ ERROR, invalid inode detected.\n"); ++ err = -EINVAL; ++ goto out_lock; ++ } ++ ++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode); ++ ++ fist_copy_attr_timesizes(dentry->d_parent->d_inode, ++ hidden_sto_dir_dentry->d_inode); ++ dtost(dentry) = MODIFIED; ++ ++ /* copy contents if regular file and cp_flag = 1 */ ++ if((cp_flag == 1) && S_ISREG(dentry->d_inode->i_mode)) { ++ ++ /* unlock first */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ dput(hidden_sto_dir_dentry); ++ ++ tgt_dentry = dtohd2(dentry); ++ tgt_mnt = stopd(dentry->d_inode->i_sb)->hidden_mnt2; ++ src_dentry = dtohd(dentry); ++ src_mnt = stopd(dentry->d_inode->i_sb)->hidden_mnt; ++ ++ err = mini_fo_cp_cont(tgt_dentry, tgt_mnt, ++ src_dentry, src_mnt); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \ ++ ERROR copying contents.\n"); ++ } ++ goto out; ++ } ++ ++ out_lock: ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ out: ++ return err; ++} ++ ++/* this function is currently identical to nondir_creat_to_del */ ++int nondir_del_rew_to_del(dentry_t *dentry) ++{ ++ return nondir_creat_to_del(dentry); ++} ++ ++int nondir_creat_to_del(dentry_t *dentry) ++{ ++ int err = 0; ++ ++ inode_t *hidden_sto_dir_inode; ++ dentry_t *hidden_sto_dir_dentry; ++ dentry_t *hidden_sto_dentry; ++ ++ check_mini_fo_dentry(dentry); ++ ++ /* for now this function serves for both state DEL_REWRITTEN and ++ * CREATED */ ++ if(!(dtost(dentry) == CREATED || (dtost(dentry) == DEL_REWRITTEN)) || ++ S_ISDIR(dentry->d_inode->i_mode)) { ++ printk(KERN_CRIT "mini_fo: nondir_mod_to_del/del_rew_to_del: \ ++ wrong type or state.\n"); ++ err = -1; ++ goto out; ++ } ++ ++ hidden_sto_dir_inode = itohi2(dentry->d_parent->d_inode); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ /* avoid destroying the hidden inode if the file is in use */ ++ dget(hidden_sto_dentry); ++ err = vfs_unlink(hidden_sto_dir_inode, hidden_sto_dentry); ++ dput(hidden_sto_dentry); ++ if(!err) ++ d_delete(hidden_sto_dentry); ++ ++ /* propagate number of hard-links */ ++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink; ++ ++ dtost(dentry) = NON_EXISTANT; ++ ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ ++ out: ++ return err; ++} ++ ++int nondir_mod_to_del(dentry_t *dentry) ++{ ++ int err; ++ dentry_t *hidden_sto_dentry; ++ inode_t *hidden_sto_dir_inode; ++ dentry_t *hidden_sto_dir_dentry; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(dtost(dentry) != MODIFIED || ++ S_ISDIR(dentry->d_inode->i_mode)) { ++ printk(KERN_CRIT "mini_fo: nondir_mod_to_del: \ ++ wrong type or state.\n"); ++ err = -1; ++ goto out; ++ } ++ ++ hidden_sto_dir_inode = itohi2(dentry->d_parent->d_inode); ++ hidden_sto_dentry = dtohd2(dentry); ++ ++ /* was hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */ ++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent); ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ down(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ ++ /* avoid destroying the hidden inode if the file is in use */ ++ dget(hidden_sto_dentry); ++ err = vfs_unlink(hidden_sto_dir_inode, hidden_sto_dentry); ++ dput(hidden_sto_dentry); ++ if(!err) ++ d_delete(hidden_sto_dentry); ++ ++ /* propagate number of hard-links */ ++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink; ++ ++ /* dput base dentry, this will relase the inode and free the ++ * dentry, as we will never need it again. */ ++ dput(dtohd(dentry)); ++ dtohd(dentry) = NULL; ++ dtost(dentry) = DELETED; ++ ++ /* add deleted file to META-file */ ++ meta_add_d_entry(dentry->d_parent, ++ dentry->d_name.name, ++ dentry->d_name.len); ++ ++ /* was: unlock_dir(hidden_sto_dir_dentry); */ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) ++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex); ++#else ++ up(&hidden_sto_dir_dentry->d_inode->i_sem); ++#endif ++ dput(hidden_sto_dir_dentry); ++ ++ out: ++ return err; ++} ++ ++int nondir_unmod_to_del(dentry_t *dentry) ++{ ++ int err = 0; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(dtost(dentry) != UNMODIFIED || ++ S_ISDIR(dentry->d_inode->i_mode)) { ++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_del: \ ++ wrong type or state.\n"); ++ err = -1; ++ goto out; ++ } ++ ++ /* next we have to get a negative dentry for the storage file */ ++ err = get_neg_sto_dentry(dentry); ++ ++ if(err) ++ goto out; ++ ++ /* add deleted file to META lists */ ++ err = meta_add_d_entry(dentry->d_parent, ++ dentry->d_name.name, ++ dentry->d_name.len); ++ ++ if(err) ++ goto out; ++ ++ /* dput base dentry, this will relase the inode and free the ++ * dentry, as we will never need it again. */ ++ dput(dtohd(dentry)); ++ dtohd(dentry) = NULL; ++ dtost(dentry) = DELETED; ++ ++ out: ++ return err; ++} ++ ++/* bring a dir from state UNMODIFIED to MODIFIED */ ++int dir_unmod_to_mod(dentry_t *dentry) ++{ ++ int err; ++ ++ check_mini_fo_dentry(dentry); ++ ++ if(dtost(dentry) != UNMODIFIED || ++ !S_ISDIR(dentry->d_inode->i_mode)) { ++ printk(KERN_CRIT "mini_fo: dir_unmod_to_mod: \ ++ wrong type or state.\n"); ++ err = -1; ++ goto out; ++ } ++ ++ /* this creates our dir incl. sto. structure */ ++ err = build_sto_structure(dentry->d_parent, dentry); ++ if(err) { ++ printk(KERN_CRIT "mini_fo: dir_unmod_to_mod: \ ++ build_sto_structure failed.\n"); ++ goto out; ++ } ++ out: ++ return err; ++} ++ +diff -urN linux-2.6.21.1.old/fs/mini_fo/super.c linux-2.6.21.1.dev/fs/mini_fo/super.c +--- linux-2.6.21.1.old/fs/mini_fo/super.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.dev/fs/mini_fo/super.c 2007-05-26 21:01:26.169328960 +0200 +@@ -0,0 +1,281 @@ ++/* ++ * Copyright (c) 1997-2003 Erez Zadok ++ * Copyright (c) 2001-2003 Stony Brook University ++ * ++ * For specific licensing information, see the COPYING file distributed with ++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING. ++ * ++ * This Copyright notice must be kept intact and distributed with all ++ * fistgen sources INCLUDING sources generated by fistgen. ++ */ ++/* ++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de> ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++/* ++ * $Id$ ++ */ ++ ++#ifdef HAVE_CONFIG_H ++# include <config.h> ++#endif ++ ++#include "fist.h" ++#include "mini_fo.h" ++ ++ ++STATIC void ++mini_fo_read_inode(inode_t *inode) ++{ ++ static struct address_space_operations mini_fo_empty_aops; ++ ++ __itopd(inode) = kmalloc(sizeof(struct mini_fo_inode_info), GFP_KERNEL); ++ if (!itopd(inode)) { ++ printk("<0>%s:%s:%d: No kernel memory!\n", __FILE__, __FUNCTION__, __LINE__); ++ ASSERT(NULL); ++ } ++ itohi(inode) = NULL; ++ itohi2(inode) = NULL; ++ ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++ inode->i_version++; ++#else ++ inode->i_version = ++event; /* increment inode version */ ++#endif ++ inode->i_op = &mini_fo_main_iops; ++ inode->i_fop = &mini_fo_main_fops; ++#if 0 ++ /* ++ * XXX: To export a file system via NFS, it has to have the ++ * FS_REQUIRES_DEV flag, so turn it on. But should we inherit it from ++ * the lower file system, or can we allow our file system to be exported ++ * even if the lower one cannot be natively exported. ++ */ ++ inode->i_sb->s_type->fs_flags |= FS_REQUIRES_DEV; ++ /* ++ * OK, the above was a hack, which is now turned off because it may ++ * cause a panic/oops on some systems. The correct way to export a ++ * "nodev" filesystem is via using nfs-utils > 1.0 and the "fsid=" export ++ * parameter, which requires 2.4.20 or later. ++ */ ++#endif ++ /* I don't think ->a_ops is ever allowed to be NULL */ ++ inode->i_mapping->a_ops = &mini_fo_empty_aops; ++} ++ ++ ++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) ++/* ++ * No need to call write_inode() on the lower inode, as it ++ * will have been marked 'dirty' anyway. But we might need ++ * to write some of our own stuff to disk. ++ */ ++STATIC void ++mini_fo_write_inode(inode_t *inode, int sync) ++{ ++ print_entry_location(); ++ print_exit_location(); ++} ++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */ ++ ++ ++STATIC void ++mini_fo_put_inode(inode_t *inode) ++{ ++ /* ++ * This is really funky stuff: ++ * Basically, if i_count == 1, iput will then decrement it and this inode will be destroyed. ++ * It is currently holding a reference to the hidden inode. ++ * Therefore, it needs to release that reference by calling iput on the hidden inode. ++ * iput() _will_ do it for us (by calling our clear_inode), but _only_ if i_nlink == 0. ++ * The problem is, NFS keeps i_nlink == 1 for silly_rename'd files. ++ * So we must for our i_nlink to 0 here to trick iput() into calling our clear_inode. ++ */ ++ if (atomic_read(&inode->i_count) == 1) ++ inode->i_nlink = 0; ++} ++ ++ ++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) ++/* ++ * we now define delete_inode, because there are two VFS paths that may ++ * destroy an inode: one of them calls clear inode before doing everything ++ * else that's needed, and the other is fine. This way we truncate the inode ++ * size (and its pages) and then clear our own inode, which will do an iput ++ * on our and the lower inode. ++ */ ++STATIC void ++mini_fo_delete_inode(inode_t *inode) ++{ ++ print_entry_location(); ++ ++ fist_checkinode(inode, "mini_fo_delete_inode IN"); ++ inode->i_size = 0; /* every f/s seems to do that */ ++ clear_inode(inode); ++ ++ print_exit_location(); ++} ++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */ ++ ++ ++/* final actions when unmounting a file system */ ++STATIC void ++mini_fo_put_super(super_block_t *sb) ++{ ++ if (stopd(sb)) { ++ mntput(stopd(sb)->hidden_mnt); ++ mntput(stopd(sb)->hidden_mnt2); ++ ++ /* mk: no! dput(stopd(sb)->base_dir_dentry); ++ dput(stopd(sb)->storage_dir_dentry); */ ++ ++ kfree(stopd(sb)); ++ __stopd(sb) = NULL; ++ } ++} ++ ++ ++#ifdef NOT_NEEDED ++/* ++ * This is called in do_umount before put_super. ++ * The superblock lock is not held yet. ++ * We probably do not need to define this or call write_super ++ * on the hidden_sb, because sync_supers() will get to hidden_sb ++ * sooner or later. But it is also called from file_fsync()... ++ */ ++STATIC void ++mini_fo_write_super(super_block_t *sb) ++{ ++ return; ++} ++#endif /* NOT_NEEDED */ ++ ++ ++STATIC int ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++mini_fo_statfs(struct dentry *d, struct kstatfs *buf) ++#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ++mini_fo_statfs(super_block_t *sb, struct kstatfs *buf) ++#else ++mini_fo_statfs(super_block_t *sb, struct statfs *buf) ++#endif ++{ ++ int err = 0; ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++ struct dentry *hidden_d; ++ ++ hidden_d = dtohd(d); ++ err = vfs_statfs(hidden_d, buf); ++#else ++ super_block_t *hidden_sb; ++ ++ hidden_sb = stohs(sb); ++ err = vfs_statfs(hidden_sb, buf); ++#endif ++ ++ return err; ++} ++ ++ ++/* ++ * XXX: not implemented. This is not allowed yet. ++ * Should we call this on the hidden_sb? Probably not. ++ */ ++STATIC int ++mini_fo_remount_fs(super_block_t *sb, int *flags, char *data) ++{ ++ //printk(KERN_CRIT "mini_fo_remount_fs: WARNING, this function is umimplemented.\n"); ++ return -ENOSYS; ++} ++ ++ ++/* ++ * Called by iput() when the inode reference count reached zero ++ * and the inode is not hashed anywhere. Used to clear anything ++ * that needs to be, before the inode is completely destroyed and put ++ * on the inode free list. ++ */ ++STATIC void ++mini_fo_clear_inode(inode_t *inode) ++{ ++ /* ++ * Decrement a reference to a hidden_inode, which was incremented ++ * by our read_inode when it was created initially. ++ */ ++ ++ /* release the wol_list */ ++ if(S_ISDIR(inode->i_mode)) { ++ __meta_put_lists(inode); ++ } ++ ++ /* mk: fan out fun */ ++ if(itohi(inode)) ++ iput(itohi(inode)); ++ if(itohi2(inode)) ++ iput(itohi2(inode)); ++ ++ // XXX: why this assertion fails? ++ // because it doesn't like us ++ // ASSERT((inode->i_state & I_DIRTY) == 0); ++ kfree(itopd(inode)); ++ __itopd(inode) = NULL; ++} ++ ++ ++/* ++ * Called in do_umount() if the MNT_FORCE flag was used and this ++ * function is defined. See comment in linux/fs/super.c:do_umount(). ++ * Used only in nfs, to kill any pending RPC tasks, so that subsequent ++ * code can actually succeed and won't leave tasks that need handling. ++ * ++ * PS. I wonder if this is somehow useful to undo damage that was ++ * left in the kernel after a user level file server (such as amd) ++ * dies. ++ */ ++STATIC void ++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) ++mini_fo_umount_begin(struct vfsmount *mnt, int flags) ++{ ++ struct vfsmount *hidden_mnt; ++ ++ hidden_mnt = stopd(mnt->mnt_sb)->hidden_mnt; ++ ++ if (hidden_mnt->mnt_sb->s_op->umount_begin) ++ hidden_mnt->mnt_sb->s_op->umount_begin(hidden_mnt, flags); ++ ++} ++#else ++mini_fo_umount_begin(super_block_t *sb) ++{ ++ super_block_t *hidden_sb; ++ ++ hidden_sb = stohs(sb); ++ ++ if (hidden_sb->s_op->umount_begin) ++ hidden_sb->s_op->umount_begin(hidden_sb); ++ ++} ++#endif ++ ++ ++struct super_operations mini_fo_sops = ++{ ++ read_inode: mini_fo_read_inode, ++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) ++ write_inode: mini_fo_write_inode, ++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */ ++ put_inode: mini_fo_put_inode, ++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) ++ delete_inode: mini_fo_delete_inode, ++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */ ++ put_super: mini_fo_put_super, ++ statfs: mini_fo_statfs, ++ remount_fs: mini_fo_remount_fs, ++ clear_inode: mini_fo_clear_inode, ++ umount_begin: mini_fo_umount_begin, ++}; diff --git a/target/linux/generic-2.6/patches-2.6.22/210-d80211_compat.patch b/target/linux/generic-2.6/patches-2.6.22/210-d80211_compat.patch new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/210-d80211_compat.patch diff --git a/target/linux/generic-2.6/patches-2.6.22/211-no_block2mtd_readahead.patch b/target/linux/generic-2.6/patches-2.6.22/211-no_block2mtd_readahead.patch new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/211-no_block2mtd_readahead.patch diff --git a/target/linux/generic-2.6/patches-2.6.22/212-block2mtd_erase_scan.patch b/target/linux/generic-2.6/patches-2.6.22/212-block2mtd_erase_scan.patch new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/212-block2mtd_erase_scan.patch diff --git a/target/linux/generic-2.6/patches-2.6.22/510-Yaffs.patch b/target/linux/generic-2.6/patches-2.6.22/510-Yaffs.patch new file mode 100644 index 0000000000..99775d750e --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/510-Yaffs.patch @@ -0,0 +1,15021 @@ +diff -urN linux-2.6.21.1/fs/Kconfig linux-2.6.21.1.new/fs/Kconfig +--- linux-2.6.21.1/fs/Kconfig 2007-06-08 14:07:09.000000000 +0200 ++++ linux-2.6.21.1.new/fs/Kconfig 2007-06-08 14:09:26.000000000 +0200 +@@ -419,6 +419,7 @@ + + source "fs/xfs/Kconfig" + source "fs/gfs2/Kconfig" ++source "fs/yaffs2/Kconfig" + + config OCFS2_FS + tristate "OCFS2 file system support" +diff -urN linux-2.6.21.1/fs/Makefile linux-2.6.21.1.new/fs/Makefile +--- linux-2.6.21.1/fs/Makefile 2007-06-08 14:07:09.000000000 +0200 ++++ linux-2.6.21.1.new/fs/Makefile 2007-06-08 14:09:51.000000000 +0200 +@@ -116,3 +116,4 @@ + obj-$(CONFIG_DEBUG_FS) += debugfs/ + obj-$(CONFIG_OCFS2_FS) += ocfs2/ + obj-$(CONFIG_GFS2_FS) += gfs2/ ++obj-$(CONFIG_YAFFS_FS) += yaffs2/ +diff -urN linux-2.6.21.1/fs/yaffs2/Kconfig linux-2.6.21.1.new/fs/yaffs2/Kconfig +--- linux-2.6.21.1/fs/yaffs2/Kconfig 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/Kconfig 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,175 @@ ++# ++# YAFFS file system configurations ++# ++ ++config YAFFS_FS ++ tristate "YAFFS2 file system support" ++ default n ++ depends on MTD ++ select YAFFS_YAFFS1 ++ select YAFFS_YAFFS2 ++ help ++ YAFFS2, or Yet Another Flash Filing System, is a filing system ++ optimised for NAND Flash chips. ++ ++ To compile the YAFFS2 file system support as a module, choose M ++ here: the module will be called yaffs2. ++ ++ If unsure, say N. ++ ++ Further information on YAFFS2 is available at ++ <http://www.aleph1.co.uk/yaffs/>. ++ ++config YAFFS_YAFFS1 ++ bool "512 byte / page devices" ++ depends on YAFFS_FS ++ default y ++ help ++ Enable YAFFS1 support -- yaffs for 512 byte / page devices ++ ++ Not needed for 2K-page devices. ++ ++ If unsure, say Y. ++ ++config YAFFS_9BYTE_TAGS ++ bool "Use older-style on-NAND data format with pageStatus byte" ++ depends on YAFFS_YAFFS1 ++ default n ++ help ++ ++ Older-style on-NAND data format has a "pageStatus" byte to record ++ chunk/page state. This byte is zero when the page is discarded. ++ Choose this option if you have existing on-NAND data using this ++ format that you need to continue to support. New data written ++ also uses the older-style format. Note: Use of this option ++ generally requires that MTD's oob layout be adjusted to use the ++ older-style format. See notes on tags formats and MTD versions. ++ ++ If unsure, say N. ++ ++config YAFFS_DOES_ECC ++ bool "Lets Yaffs do its own ECC" ++ depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS ++ default n ++ help ++ This enables Yaffs to use its own ECC functions instead of using ++ the ones from the generic MTD-NAND driver. ++ ++ If unsure, say N. ++ ++config YAFFS_ECC_WRONG_ORDER ++ bool "Use the same ecc byte order as Steven Hill's nand_ecc.c" ++ depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS ++ default n ++ help ++ This makes yaffs_ecc.c use the same ecc byte order as Steven ++ Hill's nand_ecc.c. If not set, then you get the same ecc byte ++ order as SmartMedia. ++ ++ If unsure, say N. ++ ++config YAFFS_YAFFS2 ++ bool "2048 byte (or larger) / page devices" ++ depends on YAFFS_FS ++ default y ++ help ++ Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices ++ ++ If unsure, say Y. ++ ++config YAFFS_AUTO_YAFFS2 ++ bool "Autoselect yaffs2 format" ++ depends on YAFFS_YAFFS2 ++ default y ++ help ++ Without this, you need to explicitely use yaffs2 as the file ++ system type. With this, you can say "yaffs" and yaffs or yaffs2 ++ will be used depending on the device page size (yaffs on ++ 512-byte page devices, yaffs2 on 2K page devices). ++ ++ If unsure, say Y. ++ ++config YAFFS_DISABLE_LAZY_LOAD ++ bool "Disable lazy loading" ++ depends on YAFFS_YAFFS2 ++ default n ++ help ++ "Lazy loading" defers loading file details until they are ++ required. This saves mount time, but makes the first look-up ++ a bit longer. ++ ++ Lazy loading will only happen if enabled by this option being 'n' ++ and if the appropriate tags are available, else yaffs2 will ++ automatically fall back to immediate loading and do the right ++ thing. ++ ++ Lazy laoding will be required by checkpointing. ++ ++ Setting this to 'y' will disable lazy loading. ++ ++ If unsure, say N. ++ ++config YAFFS_CHECKPOINT_RESERVED_BLOCKS ++ int "Reserved blocks for checkpointing" ++ depends on YAFFS_YAFFS2 ++ default 10 ++ help ++ Give the number of Blocks to reserve for checkpointing. ++ Checkpointing saves the state at unmount so that mounting is ++ much faster as a scan of all the flash to regenerate this state ++ is not needed. These Blocks are reserved per partition, so if ++ you have very small partitions the default (10) may be a mess ++ for you. You can set this value to 0, but that does not mean ++ checkpointing is disabled at all. There only won't be any ++ specially reserved blocks for checkpointing, so if there is ++ enough free space on the filesystem, it will be used for ++ checkpointing. ++ ++ If unsure, leave at default (10), but don't wonder if there are ++ always 2MB used on your large page device partition (10 x 2k ++ pagesize). When using small partitions or when being very small ++ on space, you probably want to set this to zero. ++ ++config YAFFS_DISABLE_WIDE_TNODES ++ bool "Turn off wide tnodes" ++ depends on YAFFS_FS ++ default n ++ help ++ Wide tnodes are only used for NAND arrays >=32MB for 512-byte ++ page devices and >=128MB for 2k page devices. They use slightly ++ more RAM but are faster since they eliminate chunk group ++ searching. ++ ++ Setting this to 'y' will force tnode width to 16 bits and save ++ memory but make large arrays slower. ++ ++ If unsure, say N. ++ ++config YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ bool "Force chunk erase check" ++ depends on YAFFS_FS ++ default n ++ help ++ Normally YAFFS only checks chunks before writing until an erased ++ chunk is found. This helps to detect any partially written ++ chunks that might have happened due to power loss. ++ ++ Enabling this forces on the test that chunks are erased in flash ++ before writing to them. This takes more time but is potentially ++ a bit more secure. ++ ++ Suggest setting Y during development and ironing out driver ++ issues etc. Suggest setting to N if you want faster writing. ++ ++ If unsure, say Y. ++ ++config YAFFS_SHORT_NAMES_IN_RAM ++ bool "Cache short names in RAM" ++ depends on YAFFS_FS ++ default y ++ help ++ If this config is set, then short names are stored with the ++ yaffs_Object. This costs an extra 16 bytes of RAM per object, ++ but makes look-ups faster. ++ ++ If unsure, say Y. +diff -urN linux-2.6.21.1/fs/yaffs2/Makefile linux-2.6.21.1.new/fs/yaffs2/Makefile +--- linux-2.6.21.1/fs/yaffs2/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/Makefile 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,11 @@ ++# ++# Makefile for the linux YAFFS filesystem routines. ++# ++ ++obj-$(CONFIG_YAFFS_FS) += yaffs.o ++ ++yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o ++yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o ++yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o ++yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o ++yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o +diff -urN linux-2.6.21.1/fs/yaffs2/devextras.h linux-2.6.21.1.new/fs/yaffs2/devextras.h +--- linux-2.6.21.1/fs/yaffs2/devextras.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/devextras.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,264 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++/* ++ * This file is just holds extra declarations used during development. ++ * Most of these are from kernel includes placed here so we can use them in ++ * applications. ++ * ++ */ ++ ++#ifndef __EXTRAS_H__ ++#define __EXTRAS_H__ ++ ++#if defined WIN32 ++#define __inline__ __inline ++#define new newHack ++#endif ++ ++#if !(defined __KERNEL__) || (defined WIN32) ++ ++/* User space defines */ ++ ++typedef unsigned char __u8; ++typedef unsigned short __u16; ++typedef unsigned __u32; ++ ++/* ++ * Simple doubly linked list implementation. ++ * ++ * Some of the internal functions ("__xxx") are useful when ++ * manipulating whole lists rather than single entries, as ++ * sometimes we already know the next/prev entries and we can ++ * generate better code by using them directly rather than ++ * using the generic single-entry routines. ++ */ ++ ++#define prefetch(x) 1 ++ ++struct list_head { ++ struct list_head *next, *prev; ++}; ++ ++#define LIST_HEAD_INIT(name) { &(name), &(name) } ++ ++#define LIST_HEAD(name) \ ++ struct list_head name = LIST_HEAD_INIT(name) ++ ++#define INIT_LIST_HEAD(ptr) do { \ ++ (ptr)->next = (ptr); (ptr)->prev = (ptr); \ ++} while (0) ++ ++/* ++ * Insert a new entry between two known consecutive entries. ++ * ++ * This is only for internal list manipulation where we know ++ * the prev/next entries already! ++ */ ++static __inline__ void __list_add(struct list_head *new, ++ struct list_head *prev, ++ struct list_head *next) ++{ ++ next->prev = new; ++ new->next = next; ++ new->prev = prev; ++ prev->next = new; ++} ++ ++/** ++ * list_add - add a new entry ++ * @new: new entry to be added ++ * @head: list head to add it after ++ * ++ * Insert a new entry after the specified head. ++ * This is good for implementing stacks. ++ */ ++static __inline__ void list_add(struct list_head *new, struct list_head *head) ++{ ++ __list_add(new, head, head->next); ++} ++ ++/** ++ * list_add_tail - add a new entry ++ * @new: new entry to be added ++ * @head: list head to add it before ++ * ++ * Insert a new entry before the specified head. ++ * This is useful for implementing queues. ++ */ ++static __inline__ void list_add_tail(struct list_head *new, ++ struct list_head *head) ++{ ++ __list_add(new, head->prev, head); ++} ++ ++/* ++ * Delete a list entry by making the prev/next entries ++ * point to each other. ++ * ++ * This is only for internal list manipulation where we know ++ * the prev/next entries already! ++ */ ++static __inline__ void __list_del(struct list_head *prev, ++ struct list_head *next) ++{ ++ next->prev = prev; ++ prev->next = next; ++} ++ ++/** ++ * list_del - deletes entry from list. ++ * @entry: the element to delete from the list. ++ * Note: list_empty on entry does not return true after this, the entry is ++ * in an undefined state. ++ */ ++static __inline__ void list_del(struct list_head *entry) ++{ ++ __list_del(entry->prev, entry->next); ++} ++ ++/** ++ * list_del_init - deletes entry from list and reinitialize it. ++ * @entry: the element to delete from the list. ++ */ ++static __inline__ void list_del_init(struct list_head *entry) ++{ ++ __list_del(entry->prev, entry->next); ++ INIT_LIST_HEAD(entry); ++} ++ ++/** ++ * list_empty - tests whether a list is empty ++ * @head: the list to test. ++ */ ++static __inline__ int list_empty(struct list_head *head) ++{ ++ return head->next == head; ++} ++ ++/** ++ * list_splice - join two lists ++ * @list: the new list to add. ++ * @head: the place to add it in the first list. ++ */ ++static __inline__ void list_splice(struct list_head *list, ++ struct list_head *head) ++{ ++ struct list_head *first = list->next; ++ ++ if (first != list) { ++ struct list_head *last = list->prev; ++ struct list_head *at = head->next; ++ ++ first->prev = head; ++ head->next = first; ++ ++ last->next = at; ++ at->prev = last; ++ } ++} ++ ++/** ++ * list_entry - get the struct for this entry ++ * @ptr: the &struct list_head pointer. ++ * @type: the type of the struct this is embedded in. ++ * @member: the name of the list_struct within the struct. ++ */ ++#define list_entry(ptr, type, member) \ ++ ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member))) ++ ++/** ++ * list_for_each - iterate over a list ++ * @pos: the &struct list_head to use as a loop counter. ++ * @head: the head for your list. ++ */ ++#define list_for_each(pos, head) \ ++ for (pos = (head)->next, prefetch(pos->next); pos != (head); \ ++ pos = pos->next, prefetch(pos->next)) ++ ++/** ++ * list_for_each_safe - iterate over a list safe against removal ++ * of list entry ++ * @pos: the &struct list_head to use as a loop counter. ++ * @n: another &struct list_head to use as temporary storage ++ * @head: the head for your list. ++ */ ++#define list_for_each_safe(pos, n, head) \ ++ for (pos = (head)->next, n = pos->next; pos != (head); \ ++ pos = n, n = pos->next) ++ ++/* ++ * File types ++ */ ++#define DT_UNKNOWN 0 ++#define DT_FIFO 1 ++#define DT_CHR 2 ++#define DT_DIR 4 ++#define DT_BLK 6 ++#define DT_REG 8 ++#define DT_LNK 10 ++#define DT_SOCK 12 ++#define DT_WHT 14 ++ ++#ifndef WIN32 ++#include <sys/stat.h> ++#endif ++ ++/* ++ * Attribute flags. These should be or-ed together to figure out what ++ * has been changed! ++ */ ++#define ATTR_MODE 1 ++#define ATTR_UID 2 ++#define ATTR_GID 4 ++#define ATTR_SIZE 8 ++#define ATTR_ATIME 16 ++#define ATTR_MTIME 32 ++#define ATTR_CTIME 64 ++#define ATTR_ATIME_SET 128 ++#define ATTR_MTIME_SET 256 ++#define ATTR_FORCE 512 /* Not a change, but a change it */ ++#define ATTR_ATTR_FLAG 1024 ++ ++struct iattr { ++ unsigned int ia_valid; ++ unsigned ia_mode; ++ unsigned ia_uid; ++ unsigned ia_gid; ++ unsigned ia_size; ++ unsigned ia_atime; ++ unsigned ia_mtime; ++ unsigned ia_ctime; ++ unsigned int ia_attr_flags; ++}; ++ ++#define KERN_DEBUG ++ ++#else ++ ++#ifndef WIN32 ++#include <linux/types.h> ++#include <linux/list.h> ++#include <linux/fs.h> ++#include <linux/stat.h> ++#endif ++ ++#endif ++ ++#if defined WIN32 ++#undef new ++#endif ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/moduleconfig.h linux-2.6.21.1.new/fs/yaffs2/moduleconfig.h +--- linux-2.6.21.1/fs/yaffs2/moduleconfig.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/moduleconfig.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,65 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Martin Fouts <Martin.Fouts@palmsource.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_CONFIG_H__ ++#define __YAFFS_CONFIG_H__ ++ ++#ifdef YAFFS_OUT_OF_TREE ++ ++/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */ ++#define CONFIG_YAFFS_FS ++#define CONFIG_YAFFS_YAFFS1 ++#define CONFIG_YAFFS_YAFFS2 ++ ++/* These options are independent of each other. Select those that matter. */ ++ ++/* Default: Not selected */ ++/* Meaning: Yaffs does its own ECC, rather than using MTD ECC */ ++//#define CONFIG_YAFFS_DOES_ECC ++ ++/* Default: Not selected */ ++/* Meaning: ECC byte order is 'wrong'. Only meaningful if */ ++/* CONFIG_YAFFS_DOES_ECC is set */ ++//#define CONFIG_YAFFS_ECC_WRONG_ORDER ++ ++/* Default: Selected */ ++/* Meaning: Disables testing whether chunks are erased before writing to them*/ ++#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK ++ ++/* Default: Selected */ ++/* Meaning: Cache short names, taking more RAM, but faster look-ups */ ++#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM ++ ++/* Default: 10 */ ++/* Meaning: set the count of blocks to reserve for checkpointing */ ++#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10 ++ ++/* ++Older-style on-NAND data format has a "pageStatus" byte to record ++chunk/page state. This byte is zeroed when the page is discarded. ++Choose this option if you have existing on-NAND data in this format ++that you need to continue to support. New data written also uses the ++older-style format. ++Note: Use of this option generally requires that MTD's oob layout be ++adjusted to use the older-style format. See notes on tags formats and ++MTD versions. ++*/ ++/* Default: Not selected */ ++/* Meaning: Use older-style on-NAND data format with pageStatus byte */ ++#define CONFIG_YAFFS_9BYTE_TAGS ++ ++#endif /* YAFFS_OUT_OF_TREE */ ++ ++#endif /* __YAFFS_CONFIG_H__ */ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.c linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,404 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++const char *yaffs_checkptrw_c_version = ++ "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $"; ++ ++ ++#include "yaffs_checkptrw.h" ++ ++ ++static int yaffs_CheckpointSpaceOk(yaffs_Device *dev) ++{ ++ ++ int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; ++ ++ T(YAFFS_TRACE_CHECKPOINT, ++ (TSTR("checkpt blocks available = %d" TENDSTR), ++ blocksAvailable)); ++ ++ ++ return (blocksAvailable <= 0) ? 0 : 1; ++} ++ ++ ++static int yaffs_CheckpointErase(yaffs_Device *dev) ++{ ++ ++ int i; ++ ++ ++ if(!dev->eraseBlockInNAND) ++ return 0; ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checking blocks %d to %d"TENDSTR), ++ dev->internalStartBlock,dev->internalEndBlock)); ++ ++ for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i); ++ if(bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("erasing checkpt block %d"TENDSTR),i)); ++ if(dev->eraseBlockInNAND(dev,i- dev->blockOffset /* realign */)){ ++ bi->blockState = YAFFS_BLOCK_STATE_EMPTY; ++ dev->nErasedBlocks++; ++ dev->nFreeChunks += dev->nChunksPerBlock; ++ } ++ else { ++ dev->markNANDBlockBad(dev,i); ++ bi->blockState = YAFFS_BLOCK_STATE_DEAD; ++ } ++ } ++ } ++ ++ dev->blocksInCheckpoint = 0; ++ ++ return 1; ++} ++ ++ ++static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev) ++{ ++ int i; ++ int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks; ++ T(YAFFS_TRACE_CHECKPOINT, ++ (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR), ++ dev->nErasedBlocks,dev->nReservedBlocks,blocksAvailable,dev->checkpointNextBlock)); ++ ++ if(dev->checkpointNextBlock >= 0 && ++ dev->checkpointNextBlock <= dev->internalEndBlock && ++ blocksAvailable > 0){ ++ ++ for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i); ++ if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY){ ++ dev->checkpointNextBlock = i + 1; ++ dev->checkpointCurrentBlock = i; ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("allocating checkpt block %d"TENDSTR),i)); ++ return; ++ } ++ } ++ } ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("out of checkpt blocks"TENDSTR))); ++ ++ dev->checkpointNextBlock = -1; ++ dev->checkpointCurrentBlock = -1; ++} ++ ++static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev) ++{ ++ int i; ++ yaffs_ExtendedTags tags; ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR), ++ dev->blocksInCheckpoint, dev->checkpointNextBlock)); ++ ++ if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks) ++ for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){ ++ int chunk = i * dev->nChunksPerBlock; ++ int realignedChunk = chunk - dev->chunkOffset; ++ ++ dev->readChunkWithTagsFromNAND(dev,realignedChunk,NULL,&tags); ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR), ++ i, tags.objectId,tags.sequenceNumber,tags.eccResult)); ++ ++ if(tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA){ ++ /* Right kind of block */ ++ dev->checkpointNextBlock = tags.objectId; ++ dev->checkpointCurrentBlock = i; ++ dev->checkpointBlockList[dev->blocksInCheckpoint] = i; ++ dev->blocksInCheckpoint++; ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("found checkpt block %d"TENDSTR),i)); ++ return; ++ } ++ } ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("found no more checkpt blocks"TENDSTR))); ++ ++ dev->checkpointNextBlock = -1; ++ dev->checkpointCurrentBlock = -1; ++} ++ ++ ++int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting) ++{ ++ ++ /* Got the functions we need? */ ++ if (!dev->writeChunkWithTagsToNAND || ++ !dev->readChunkWithTagsFromNAND || ++ !dev->eraseBlockInNAND || ++ !dev->markNANDBlockBad) ++ return 0; ++ ++ if(forWriting && !yaffs_CheckpointSpaceOk(dev)) ++ return 0; ++ ++ if(!dev->checkpointBuffer) ++ dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk); ++ if(!dev->checkpointBuffer) ++ return 0; ++ ++ ++ dev->checkpointPageSequence = 0; ++ ++ dev->checkpointOpenForWrite = forWriting; ++ ++ dev->checkpointByteCount = 0; ++ dev->checkpointSum = 0; ++ dev->checkpointXor = 0; ++ dev->checkpointCurrentBlock = -1; ++ dev->checkpointCurrentChunk = -1; ++ dev->checkpointNextBlock = dev->internalStartBlock; ++ ++ /* Erase all the blocks in the checkpoint area */ ++ if(forWriting){ ++ memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk); ++ dev->checkpointByteOffset = 0; ++ return yaffs_CheckpointErase(dev); ++ ++ ++ } else { ++ int i; ++ /* Set to a value that will kick off a read */ ++ dev->checkpointByteOffset = dev->nDataBytesPerChunk; ++ /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully) ++ * going to be way more than we need */ ++ dev->blocksInCheckpoint = 0; ++ dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2; ++ dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks); ++ for(i = 0; i < dev->checkpointMaxBlocks; i++) ++ dev->checkpointBlockList[i] = -1; ++ } ++ ++ return 1; ++} ++ ++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum) ++{ ++ __u32 compositeSum; ++ compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF); ++ *sum = compositeSum; ++ return 1; ++} ++ ++static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev) ++{ ++ ++ int chunk; ++ int realignedChunk; ++ ++ yaffs_ExtendedTags tags; ++ ++ if(dev->checkpointCurrentBlock < 0){ ++ yaffs_CheckpointFindNextErasedBlock(dev); ++ dev->checkpointCurrentChunk = 0; ++ } ++ ++ if(dev->checkpointCurrentBlock < 0) ++ return 0; ++ ++ tags.chunkDeleted = 0; ++ tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */ ++ tags.chunkId = dev->checkpointPageSequence + 1; ++ tags.sequenceNumber = YAFFS_SEQUENCE_CHECKPOINT_DATA; ++ tags.byteCount = dev->nDataBytesPerChunk; ++ if(dev->checkpointCurrentChunk == 0){ ++ /* First chunk we write for the block? Set block state to ++ checkpoint */ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointCurrentBlock); ++ bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; ++ dev->blocksInCheckpoint++; ++ } ++ ++ chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk; ++ ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR), ++ chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId)); ++ ++ realignedChunk = chunk - dev->chunkOffset; ++ ++ dev->writeChunkWithTagsToNAND(dev,realignedChunk,dev->checkpointBuffer,&tags); ++ dev->checkpointByteOffset = 0; ++ dev->checkpointPageSequence++; ++ dev->checkpointCurrentChunk++; ++ if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){ ++ dev->checkpointCurrentChunk = 0; ++ dev->checkpointCurrentBlock = -1; ++ } ++ memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk); ++ ++ return 1; ++} ++ ++ ++int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes) ++{ ++ int i=0; ++ int ok = 1; ++ ++ ++ __u8 * dataBytes = (__u8 *)data; ++ ++ ++ ++ if(!dev->checkpointBuffer) ++ return 0; ++ ++ if(!dev->checkpointOpenForWrite) ++ return -1; ++ ++ while(i < nBytes && ok) { ++ ++ ++ ++ dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ; ++ dev->checkpointSum += *dataBytes; ++ dev->checkpointXor ^= *dataBytes; ++ ++ dev->checkpointByteOffset++; ++ i++; ++ dataBytes++; ++ dev->checkpointByteCount++; ++ ++ ++ if(dev->checkpointByteOffset < 0 || ++ dev->checkpointByteOffset >= dev->nDataBytesPerChunk) ++ ok = yaffs_CheckpointFlushBuffer(dev); ++ ++ } ++ ++ return i; ++} ++ ++int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes) ++{ ++ int i=0; ++ int ok = 1; ++ yaffs_ExtendedTags tags; ++ ++ ++ int chunk; ++ int realignedChunk; ++ ++ __u8 *dataBytes = (__u8 *)data; ++ ++ if(!dev->checkpointBuffer) ++ return 0; ++ ++ if(dev->checkpointOpenForWrite) ++ return -1; ++ ++ while(i < nBytes && ok) { ++ ++ ++ if(dev->checkpointByteOffset < 0 || ++ dev->checkpointByteOffset >= dev->nDataBytesPerChunk) { ++ ++ if(dev->checkpointCurrentBlock < 0){ ++ yaffs_CheckpointFindNextCheckpointBlock(dev); ++ dev->checkpointCurrentChunk = 0; ++ } ++ ++ if(dev->checkpointCurrentBlock < 0) ++ ok = 0; ++ else { ++ ++ chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + ++ dev->checkpointCurrentChunk; ++ ++ realignedChunk = chunk - dev->chunkOffset; ++ ++ /* read in the next chunk */ ++ /* printf("read checkpoint page %d\n",dev->checkpointPage); */ ++ dev->readChunkWithTagsFromNAND(dev, realignedChunk, ++ dev->checkpointBuffer, ++ &tags); ++ ++ if(tags.chunkId != (dev->checkpointPageSequence + 1) || ++ tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA) ++ ok = 0; ++ ++ dev->checkpointByteOffset = 0; ++ dev->checkpointPageSequence++; ++ dev->checkpointCurrentChunk++; ++ ++ if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock) ++ dev->checkpointCurrentBlock = -1; ++ } ++ } ++ ++ if(ok){ ++ *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset]; ++ dev->checkpointSum += *dataBytes; ++ dev->checkpointXor ^= *dataBytes; ++ dev->checkpointByteOffset++; ++ i++; ++ dataBytes++; ++ dev->checkpointByteCount++; ++ } ++ } ++ ++ return i; ++} ++ ++int yaffs_CheckpointClose(yaffs_Device *dev) ++{ ++ ++ if(dev->checkpointOpenForWrite){ ++ if(dev->checkpointByteOffset != 0) ++ yaffs_CheckpointFlushBuffer(dev); ++ } else { ++ int i; ++ for(i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++){ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointBlockList[i]); ++ if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY) ++ bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT; ++ else { ++ // Todo this looks odd... ++ } ++ } ++ YFREE(dev->checkpointBlockList); ++ dev->checkpointBlockList = NULL; ++ } ++ ++ dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock; ++ dev->nErasedBlocks -= dev->blocksInCheckpoint; ++ ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint byte count %d" TENDSTR), ++ dev->checkpointByteCount)); ++ ++ if(dev->checkpointBuffer){ ++ /* free the buffer */ ++ YFREE(dev->checkpointBuffer); ++ dev->checkpointBuffer = NULL; ++ return 1; ++ } ++ else ++ return 0; ++ ++} ++ ++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev) ++{ ++ /* Erase the first checksum block */ ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint invalidate"TENDSTR))); ++ ++ if(!yaffs_CheckpointSpaceOk(dev)) ++ return 0; ++ ++ return yaffs_CheckpointErase(dev); ++} ++ ++ ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.h linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_checkptrw.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_checkptrw.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,35 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_CHECKPTRW_H__ ++#define __YAFFS_CHECKPTRW_H__ ++ ++#include "yaffs_guts.h" ++ ++int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting); ++ ++int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes); ++ ++int yaffs_CheckpointRead(yaffs_Device *dev,void *data, int nBytes); ++ ++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum); ++ ++int yaffs_CheckpointClose(yaffs_Device *dev); ++ ++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); ++ ++ ++#endif ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_ecc.c linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_ecc.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,331 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* ++ * This code implements the ECC algorithm used in SmartMedia. ++ * ++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. ++ * The two unused bit are set to 1. ++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC ++ * blocks are used on a 512-byte NAND page. ++ * ++ */ ++ ++/* Table generated by gen-ecc.c ++ * Using a table means we do not have to calculate p1..p4 and p1'..p4' ++ * for each byte of data. These are instead provided in a table in bits7..2. ++ * Bit 0 of each entry indicates whether the entry has an odd or even parity, and therefore ++ * this bytes influence on the line parity. ++ */ ++ ++const char *yaffs_ecc_c_version = ++ "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $"; ++ ++#include "yportenv.h" ++ ++#include "yaffs_ecc.h" ++ ++static const unsigned char column_parity_table[] = { ++ 0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69, ++ 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00, ++ 0x95, 0xc0, 0xcc, 0x99, 0xf0, 0xa5, 0xa9, 0xfc, ++ 0xfc, 0xa9, 0xa5, 0xf0, 0x99, 0xcc, 0xc0, 0x95, ++ 0x99, 0xcc, 0xc0, 0x95, 0xfc, 0xa9, 0xa5, 0xf0, ++ 0xf0, 0xa5, 0xa9, 0xfc, 0x95, 0xc0, 0xcc, 0x99, ++ 0x0c, 0x59, 0x55, 0x00, 0x69, 0x3c, 0x30, 0x65, ++ 0x65, 0x30, 0x3c, 0x69, 0x00, 0x55, 0x59, 0x0c, ++ 0xa5, 0xf0, 0xfc, 0xa9, 0xc0, 0x95, 0x99, 0xcc, ++ 0xcc, 0x99, 0x95, 0xc0, 0xa9, 0xfc, 0xf0, 0xa5, ++ 0x30, 0x65, 0x69, 0x3c, 0x55, 0x00, 0x0c, 0x59, ++ 0x59, 0x0c, 0x00, 0x55, 0x3c, 0x69, 0x65, 0x30, ++ 0x3c, 0x69, 0x65, 0x30, 0x59, 0x0c, 0x00, 0x55, ++ 0x55, 0x00, 0x0c, 0x59, 0x30, 0x65, 0x69, 0x3c, ++ 0xa9, 0xfc, 0xf0, 0xa5, 0xcc, 0x99, 0x95, 0xc0, ++ 0xc0, 0x95, 0x99, 0xcc, 0xa5, 0xf0, 0xfc, 0xa9, ++ 0xa9, 0xfc, 0xf0, 0xa5, 0xcc, 0x99, 0x95, 0xc0, ++ 0xc0, 0x95, 0x99, 0xcc, 0xa5, 0xf0, 0xfc, 0xa9, ++ 0x3c, 0x69, 0x65, 0x30, 0x59, 0x0c, 0x00, 0x55, ++ 0x55, 0x00, 0x0c, 0x59, 0x30, 0x65, 0x69, 0x3c, ++ 0x30, 0x65, 0x69, 0x3c, 0x55, 0x00, 0x0c, 0x59, ++ 0x59, 0x0c, 0x00, 0x55, 0x3c, 0x69, 0x65, 0x30, ++ 0xa5, 0xf0, 0xfc, 0xa9, 0xc0, 0x95, 0x99, 0xcc, ++ 0xcc, 0x99, 0x95, 0xc0, 0xa9, 0xfc, 0xf0, 0xa5, ++ 0x0c, 0x59, 0x55, 0x00, 0x69, 0x3c, 0x30, 0x65, ++ 0x65, 0x30, 0x3c, 0x69, 0x00, 0x55, 0x59, 0x0c, ++ 0x99, 0xcc, 0xc0, 0x95, 0xfc, 0xa9, 0xa5, 0xf0, ++ 0xf0, 0xa5, 0xa9, 0xfc, 0x95, 0xc0, 0xcc, 0x99, ++ 0x95, 0xc0, 0xcc, 0x99, 0xf0, 0xa5, 0xa9, 0xfc, ++ 0xfc, 0xa9, 0xa5, 0xf0, 0x99, 0xcc, 0xc0, 0x95, ++ 0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69, ++ 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00, ++}; ++ ++/* Count the bits in an unsigned char or a U32 */ ++ ++static int yaffs_CountBits(unsigned char x) ++{ ++ int r = 0; ++ while (x) { ++ if (x & 1) ++ r++; ++ x >>= 1; ++ } ++ return r; ++} ++ ++static int yaffs_CountBits32(unsigned x) ++{ ++ int r = 0; ++ while (x) { ++ if (x & 1) ++ r++; ++ x >>= 1; ++ } ++ return r; ++} ++ ++/* Calculate the ECC for a 256-byte block of data */ ++void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc) ++{ ++ unsigned int i; ++ ++ unsigned char col_parity = 0; ++ unsigned char line_parity = 0; ++ unsigned char line_parity_prime = 0; ++ unsigned char t; ++ unsigned char b; ++ ++ for (i = 0; i < 256; i++) { ++ b = column_parity_table[*data++]; ++ col_parity ^= b; ++ ++ if (b & 0x01) // odd number of bits in the byte ++ { ++ line_parity ^= i; ++ line_parity_prime ^= ~i; ++ } ++ ++ } ++ ++ ecc[2] = (~col_parity) | 0x03; ++ ++ t = 0; ++ if (line_parity & 0x80) ++ t |= 0x80; ++ if (line_parity_prime & 0x80) ++ t |= 0x40; ++ if (line_parity & 0x40) ++ t |= 0x20; ++ if (line_parity_prime & 0x40) ++ t |= 0x10; ++ if (line_parity & 0x20) ++ t |= 0x08; ++ if (line_parity_prime & 0x20) ++ t |= 0x04; ++ if (line_parity & 0x10) ++ t |= 0x02; ++ if (line_parity_prime & 0x10) ++ t |= 0x01; ++ ecc[1] = ~t; ++ ++ t = 0; ++ if (line_parity & 0x08) ++ t |= 0x80; ++ if (line_parity_prime & 0x08) ++ t |= 0x40; ++ if (line_parity & 0x04) ++ t |= 0x20; ++ if (line_parity_prime & 0x04) ++ t |= 0x10; ++ if (line_parity & 0x02) ++ t |= 0x08; ++ if (line_parity_prime & 0x02) ++ t |= 0x04; ++ if (line_parity & 0x01) ++ t |= 0x02; ++ if (line_parity_prime & 0x01) ++ t |= 0x01; ++ ecc[0] = ~t; ++ ++#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER ++ // Swap the bytes into the wrong order ++ t = ecc[0]; ++ ecc[0] = ecc[1]; ++ ecc[1] = t; ++#endif ++} ++ ++ ++/* Correct the ECC on a 256 byte block of data */ ++ ++int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, ++ const unsigned char *test_ecc) ++{ ++ unsigned char d0, d1, d2; /* deltas */ ++ ++ d0 = read_ecc[0] ^ test_ecc[0]; ++ d1 = read_ecc[1] ^ test_ecc[1]; ++ d2 = read_ecc[2] ^ test_ecc[2]; ++ ++ if ((d0 | d1 | d2) == 0) ++ return 0; /* no error */ ++ ++ if (((d0 ^ (d0 >> 1)) & 0x55) == 0x55 && ++ ((d1 ^ (d1 >> 1)) & 0x55) == 0x55 && ++ ((d2 ^ (d2 >> 1)) & 0x54) == 0x54) { ++ /* Single bit (recoverable) error in data */ ++ ++ unsigned byte; ++ unsigned bit; ++ ++#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER ++ // swap the bytes to correct for the wrong order ++ unsigned char t; ++ ++ t = d0; ++ d0 = d1; ++ d1 = t; ++#endif ++ ++ bit = byte = 0; ++ ++ if (d1 & 0x80) ++ byte |= 0x80; ++ if (d1 & 0x20) ++ byte |= 0x40; ++ if (d1 & 0x08) ++ byte |= 0x20; ++ if (d1 & 0x02) ++ byte |= 0x10; ++ if (d0 & 0x80) ++ byte |= 0x08; ++ if (d0 & 0x20) ++ byte |= 0x04; ++ if (d0 & 0x08) ++ byte |= 0x02; ++ if (d0 & 0x02) ++ byte |= 0x01; ++ ++ if (d2 & 0x80) ++ bit |= 0x04; ++ if (d2 & 0x20) ++ bit |= 0x02; ++ if (d2 & 0x08) ++ bit |= 0x01; ++ ++ data[byte] ^= (1 << bit); ++ ++ return 1; /* Corrected the error */ ++ } ++ ++ if ((yaffs_CountBits(d0) + ++ yaffs_CountBits(d1) + ++ yaffs_CountBits(d2)) == 1) { ++ /* Reccoverable error in ecc */ ++ ++ read_ecc[0] = test_ecc[0]; ++ read_ecc[1] = test_ecc[1]; ++ read_ecc[2] = test_ecc[2]; ++ ++ return 1; /* Corrected the error */ ++ } ++ ++ /* Unrecoverable error */ ++ ++ return -1; ++ ++} ++ ++ ++/* ++ * ECCxxxOther does ECC calcs on arbitrary n bytes of data ++ */ ++void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, ++ yaffs_ECCOther * eccOther) ++{ ++ unsigned int i; ++ ++ unsigned char col_parity = 0; ++ unsigned line_parity = 0; ++ unsigned line_parity_prime = 0; ++ unsigned char b; ++ ++ for (i = 0; i < nBytes; i++) { ++ b = column_parity_table[*data++]; ++ col_parity ^= b; ++ ++ if (b & 0x01) { ++ /* odd number of bits in the byte */ ++ line_parity ^= i; ++ line_parity_prime ^= ~i; ++ } ++ ++ } ++ ++ eccOther->colParity = (col_parity >> 2) & 0x3f; ++ eccOther->lineParity = line_parity; ++ eccOther->lineParityPrime = line_parity_prime; ++} ++ ++int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, ++ yaffs_ECCOther * read_ecc, ++ const yaffs_ECCOther * test_ecc) ++{ ++ unsigned char cDelta; /* column parity delta */ ++ unsigned lDelta; /* line parity delta */ ++ unsigned lDeltaPrime; /* line parity delta */ ++ unsigned bit; ++ ++ cDelta = read_ecc->colParity ^ test_ecc->colParity; ++ lDelta = read_ecc->lineParity ^ test_ecc->lineParity; ++ lDeltaPrime = read_ecc->lineParityPrime ^ test_ecc->lineParityPrime; ++ ++ if ((cDelta | lDelta | lDeltaPrime) == 0) ++ return 0; /* no error */ ++ ++ if (lDelta == ~lDeltaPrime && ++ (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) ++ { ++ /* Single bit (recoverable) error in data */ ++ ++ bit = 0; ++ ++ if (cDelta & 0x20) ++ bit |= 0x04; ++ if (cDelta & 0x08) ++ bit |= 0x02; ++ if (cDelta & 0x02) ++ bit |= 0x01; ++ ++ if(lDelta >= nBytes) ++ return -1; ++ ++ data[lDelta] ^= (1 << bit); ++ ++ return 1; /* corrected */ ++ } ++ ++ if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) + ++ yaffs_CountBits(cDelta)) == 1) { ++ /* Reccoverable error in ecc */ ++ ++ *read_ecc = *test_ecc; ++ return 1; /* corrected */ ++ } ++ ++ /* Unrecoverable error */ ++ ++ return -1; ++ ++} ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_ecc.h linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_ecc.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_ecc.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,44 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++ /* ++ * This code implements the ECC algorithm used in SmartMedia. ++ * ++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes. ++ * The two unused bit are set to 1. ++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC ++ * blocks are used on a 512-byte NAND page. ++ * ++ */ ++ ++#ifndef __YAFFS_ECC_H__ ++#define __YAFFS_ECC_H__ ++ ++typedef struct { ++ unsigned char colParity; ++ unsigned lineParity; ++ unsigned lineParityPrime; ++} yaffs_ECCOther; ++ ++void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc); ++int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, ++ const unsigned char *test_ecc); ++ ++void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes, ++ yaffs_ECCOther * ecc); ++int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes, ++ yaffs_ECCOther * read_ecc, ++ const yaffs_ECCOther * test_ecc); ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_fs.c linux-2.6.21.1.new/fs/yaffs2/yaffs_fs.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_fs.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_fs.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,2278 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * Acknowledgements: ++ * Luc van OostenRyck for numerous patches. ++ * Nick Bane for numerous patches. ++ * Nick Bane for 2.5/2.6 integration. ++ * Andras Toth for mknod rdev issue. ++ * Michael Fischer for finding the problem with inode inconsistency. ++ * Some code bodily lifted from JFFS ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* ++ * ++ * This is the file system front-end to YAFFS that hooks it up to ++ * the VFS. ++ * ++ * Special notes: ++ * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with ++ * this superblock ++ * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this ++ * superblock ++ * >> inode->u.generic_ip points to the associated yaffs_Object. ++ */ ++ ++const char *yaffs_fs_c_version = ++ "$Id: yaffs_fs.c,v 1.60 2007-05-15 20:07:40 charles Exp $"; ++extern const char *yaffs_guts_c_version; ++ ++#include <linux/version.h> ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) ++#include <linux/config.h> ++#endif ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/slab.h> ++#include <linux/init.h> ++#include <linux/list.h> ++#include <linux/fs.h> ++#include <linux/proc_fs.h> ++#include <linux/smp_lock.h> ++#include <linux/pagemap.h> ++#include <linux/mtd/mtd.h> ++#include <linux/interrupt.h> ++#include <linux/string.h> ++#include <linux/ctype.h> ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ ++#include <linux/statfs.h> /* Added NCB 15-8-2003 */ ++#include <asm/statfs.h> ++#define UnlockPage(p) unlock_page(p) ++#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) ++ ++/* FIXME: use sb->s_id instead ? */ ++#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) ++ ++#else ++ ++#include <linux/locks.h> ++#define BDEVNAME_SIZE 0 ++#define yaffs_devname(sb, buf) kdevname(sb->s_dev) ++ ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)) ++/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ ++#define __user ++#endif ++ ++#endif ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++#define WRITE_SIZE_STR "writesize" ++#define WRITE_SIZE(mtd) (mtd)->writesize ++#else ++#define WRITE_SIZE_STR "oobblock" ++#define WRITE_SIZE(mtd) (mtd)->oobblock ++#endif ++ ++#include <asm/uaccess.h> ++ ++#include "yportenv.h" ++#include "yaffs_guts.h" ++ ++#include <linux/mtd/mtd.h> ++#include "yaffs_mtdif.h" ++#include "yaffs_mtdif1.h" ++#include "yaffs_mtdif2.h" ++ ++unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; ++unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; ++ ++/* Module Parameters */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++module_param(yaffs_traceMask,uint,0644); ++module_param(yaffs_wr_attempts,uint,0644); ++#else ++MODULE_PARM(yaffs_traceMask,"i"); ++MODULE_PARM(yaffs_wr_attempts,"i"); ++#endif ++ ++/*#define T(x) printk x */ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) ++#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private ++#else ++#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip ++#endif ++ ++#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) ++#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info) ++#else ++#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp) ++#endif ++ ++static void yaffs_put_super(struct super_block *sb); ++ ++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, ++ loff_t * pos); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_file_flush(struct file *file, fl_owner_t id); ++#else ++static int yaffs_file_flush(struct file *file); ++#endif ++ ++static int yaffs_sync_object(struct file *file, struct dentry *dentry, ++ int datasync); ++ ++static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, ++ struct nameidata *n); ++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, ++ struct nameidata *n); ++#else ++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); ++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); ++#endif ++static int yaffs_link(struct dentry *old_dentry, struct inode *dir, ++ struct dentry *dentry); ++static int yaffs_unlink(struct inode *dir, struct dentry *dentry); ++static int yaffs_symlink(struct inode *dir, struct dentry *dentry, ++ const char *symname); ++static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, ++ dev_t dev); ++#else ++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, ++ int dev); ++#endif ++static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, ++ struct inode *new_dir, struct dentry *new_dentry); ++static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_sync_fs(struct super_block *sb, int wait); ++static void yaffs_write_super(struct super_block *sb); ++#else ++static int yaffs_sync_fs(struct super_block *sb); ++static int yaffs_write_super(struct super_block *sb); ++#endif ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); ++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); ++#else ++static int yaffs_statfs(struct super_block *sb, struct statfs *buf); ++#endif ++static void yaffs_read_inode(struct inode *inode); ++ ++static void yaffs_put_inode(struct inode *inode); ++static void yaffs_delete_inode(struct inode *); ++static void yaffs_clear_inode(struct inode *); ++ ++static int yaffs_readpage(struct file *file, struct page *page); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_writepage(struct page *page, struct writeback_control *wbc); ++#else ++static int yaffs_writepage(struct page *page); ++#endif ++static int yaffs_prepare_write(struct file *f, struct page *pg, ++ unsigned offset, unsigned to); ++static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, ++ unsigned to); ++ ++static int yaffs_readlink(struct dentry *dentry, char __user * buffer, ++ int buflen); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) ++static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); ++#else ++static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); ++#endif ++ ++static struct address_space_operations yaffs_file_address_operations = { ++ .readpage = yaffs_readpage, ++ .writepage = yaffs_writepage, ++ .prepare_write = yaffs_prepare_write, ++ .commit_write = yaffs_commit_write, ++}; ++ ++static struct file_operations yaffs_file_operations = { ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) ++ .read = do_sync_read, ++ .write = do_sync_write, ++ .aio_read = generic_file_aio_read, ++ .aio_write = generic_file_aio_write, ++#else ++ .read = generic_file_read, ++ .write = generic_file_write, ++#endif ++ .mmap = generic_file_mmap, ++ .flush = yaffs_file_flush, ++ .fsync = yaffs_sync_object, ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ .sendfile = generic_file_sendfile, ++#endif ++ ++}; ++ ++static struct inode_operations yaffs_file_inode_operations = { ++ .setattr = yaffs_setattr, ++}; ++ ++static struct inode_operations yaffs_symlink_inode_operations = { ++ .readlink = yaffs_readlink, ++ .follow_link = yaffs_follow_link, ++ .setattr = yaffs_setattr, ++}; ++ ++static struct inode_operations yaffs_dir_inode_operations = { ++ .create = yaffs_create, ++ .lookup = yaffs_lookup, ++ .link = yaffs_link, ++ .unlink = yaffs_unlink, ++ .symlink = yaffs_symlink, ++ .mkdir = yaffs_mkdir, ++ .rmdir = yaffs_unlink, ++ .mknod = yaffs_mknod, ++ .rename = yaffs_rename, ++ .setattr = yaffs_setattr, ++}; ++ ++static struct file_operations yaffs_dir_operations = { ++ .read = generic_read_dir, ++ .readdir = yaffs_readdir, ++ .fsync = yaffs_sync_object, ++}; ++ ++static struct super_operations yaffs_super_ops = { ++ .statfs = yaffs_statfs, ++ .read_inode = yaffs_read_inode, ++ .put_inode = yaffs_put_inode, ++ .put_super = yaffs_put_super, ++ .delete_inode = yaffs_delete_inode, ++ .clear_inode = yaffs_clear_inode, ++ .sync_fs = yaffs_sync_fs, ++ .write_super = yaffs_write_super, ++}; ++ ++static void yaffs_GrossLock(yaffs_Device * dev) ++{ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n")); ++ ++ down(&dev->grossLock); ++} ++ ++static void yaffs_GrossUnlock(yaffs_Device * dev) ++{ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n")); ++ up(&dev->grossLock); ++ ++} ++ ++static int yaffs_readlink(struct dentry *dentry, char __user * buffer, ++ int buflen) ++{ ++ unsigned char *alias; ++ int ret; ++ ++ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); ++ ++ yaffs_GrossUnlock(dev); ++ ++ if (!alias) ++ return -ENOMEM; ++ ++ ret = vfs_readlink(dentry, buffer, buflen, alias); ++ kfree(alias); ++ return ret; ++} ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) ++static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) ++#else ++static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) ++#endif ++{ ++ unsigned char *alias; ++ int ret; ++ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); ++ ++ yaffs_GrossUnlock(dev); ++ ++ if (!alias) ++ { ++ ret = -ENOMEM; ++ goto out; ++ } ++ ++ ret = vfs_follow_link(nd, alias); ++ kfree(alias); ++out: ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) ++ return ERR_PTR (ret); ++#else ++ return ret; ++#endif ++} ++ ++struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, ++ yaffs_Object * obj); ++ ++/* ++ * Lookup is used to find objects in the fs ++ */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ ++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, ++ struct nameidata *n) ++#else ++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) ++#endif ++{ ++ yaffs_Object *obj; ++ struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ ++ ++ yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_lookup for %d:%s\n", ++ yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); ++ ++ obj = ++ yaffs_FindObjectByName(yaffs_InodeToObject(dir), ++ dentry->d_name.name); ++ ++ obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ ++ ++ /* Can't hold gross lock when calling yaffs_get_inode() */ ++ yaffs_GrossUnlock(dev); ++ ++ if (obj) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_lookup found %d\n", obj->objectId)); ++ ++ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); ++ ++ if (inode) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_loookup dentry \n")); ++/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to ++ * d_add even if NULL inode */ ++#if 0 ++ /*dget(dentry); // try to solve directory bug */ ++ d_add(dentry, inode); ++ ++ /* return dentry; */ ++ return NULL; ++#endif ++ } ++ ++ } else { ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n")); ++ ++ } ++ ++/* added NCB for 2.5/6 compatability - forces add even if inode is ++ * NULL which creates dentry hash */ ++ d_add(dentry, inode); ++ ++ return NULL; ++ /* return (ERR_PTR(-EIO)); */ ++ ++} ++ ++/* For now put inode is just for debugging ++ * Put inode is called when the inode **structure** is put. ++ */ ++static void yaffs_put_inode(struct inode *inode) ++{ ++ T(YAFFS_TRACE_OS, ++ ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino, ++ atomic_read(&inode->i_count))); ++ ++} ++ ++/* clear is called to tell the fs to release any per-inode data it holds */ ++static void yaffs_clear_inode(struct inode *inode) ++{ ++ yaffs_Object *obj; ++ yaffs_Device *dev; ++ ++ obj = yaffs_InodeToObject(inode); ++ ++ T(YAFFS_TRACE_OS, ++ ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino, ++ atomic_read(&inode->i_count), ++ obj ? "object exists" : "null object")); ++ ++ if (obj) { ++ dev = obj->myDev; ++ yaffs_GrossLock(dev); ++ ++ /* Clear the association between the inode and ++ * the yaffs_Object. ++ */ ++ obj->myInode = NULL; ++ yaffs_InodeToObjectLV(inode) = NULL; ++ ++ /* If the object freeing was deferred, then the real ++ * free happens now. ++ * This should fix the inode inconsistency problem. ++ */ ++ ++ yaffs_HandleDeferedFree(obj); ++ ++ yaffs_GrossUnlock(dev); ++ } ++ ++} ++ ++/* delete is called when the link count is zero and the inode ++ * is put (ie. nobody wants to know about it anymore, time to ++ * delete the file). ++ * NB Must call clear_inode() ++ */ ++static void yaffs_delete_inode(struct inode *inode) ++{ ++ yaffs_Object *obj = yaffs_InodeToObject(inode); ++ yaffs_Device *dev; ++ ++ T(YAFFS_TRACE_OS, ++ ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino, ++ atomic_read(&inode->i_count), ++ obj ? "object exists" : "null object")); ++ ++ if (obj) { ++ dev = obj->myDev; ++ yaffs_GrossLock(dev); ++ yaffs_DeleteFile(obj); ++ yaffs_GrossUnlock(dev); ++ } ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) ++ truncate_inode_pages (&inode->i_data, 0); ++#endif ++ clear_inode(inode); ++} ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_file_flush(struct file *file, fl_owner_t id) ++#else ++static int yaffs_file_flush(struct file *file) ++#endif ++{ ++ yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry); ++ ++ yaffs_Device *dev = obj->myDev; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_file_flush object %d (%s)\n", obj->objectId, ++ obj->dirty ? "dirty" : "clean")); ++ ++ yaffs_GrossLock(dev); ++ ++ yaffs_FlushFile(obj, 1); ++ ++ yaffs_GrossUnlock(dev); ++ ++ return 0; ++} ++ ++static int yaffs_readpage_nolock(struct file *f, struct page *pg) ++{ ++ /* Lifted from jffs2 */ ++ ++ yaffs_Object *obj; ++ unsigned char *pg_buf; ++ int ret; ++ ++ yaffs_Device *dev; ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage at %08x, size %08x\n", ++ (unsigned)(pg->index << PAGE_CACHE_SHIFT), ++ (unsigned)PAGE_CACHE_SIZE)); ++ ++ obj = yaffs_DentryToObject(f->f_dentry); ++ ++ dev = obj->myDev; ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ BUG_ON(!PageLocked(pg)); ++#else ++ if (!PageLocked(pg)) ++ PAGE_BUG(pg); ++#endif ++ ++ pg_buf = kmap(pg); ++ /* FIXME: Can kmap fail? */ ++ ++ yaffs_GrossLock(dev); ++ ++ ret = ++ yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT, ++ PAGE_CACHE_SIZE); ++ ++ yaffs_GrossUnlock(dev); ++ ++ if (ret >= 0) ++ ret = 0; ++ ++ if (ret) { ++ ClearPageUptodate(pg); ++ SetPageError(pg); ++ } else { ++ SetPageUptodate(pg); ++ ClearPageError(pg); ++ } ++ ++ flush_dcache_page(pg); ++ kunmap(pg); ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage done\n")); ++ return ret; ++} ++ ++static int yaffs_readpage_unlock(struct file *f, struct page *pg) ++{ ++ int ret = yaffs_readpage_nolock(f, pg); ++ UnlockPage(pg); ++ return ret; ++} ++ ++static int yaffs_readpage(struct file *f, struct page *pg) ++{ ++ return yaffs_readpage_unlock(f, pg); ++} ++ ++/* writepage inspired by/stolen from smbfs */ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_writepage(struct page *page, struct writeback_control *wbc) ++#else ++static int yaffs_writepage(struct page *page) ++#endif ++{ ++ struct address_space *mapping = page->mapping; ++ loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT; ++ struct inode *inode; ++ unsigned long end_index; ++ char *buffer; ++ yaffs_Object *obj; ++ int nWritten = 0; ++ unsigned nBytes; ++ ++ if (!mapping) ++ BUG(); ++ inode = mapping->host; ++ if (!inode) ++ BUG(); ++ ++ if (offset > inode->i_size) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG ++ "yaffs_writepage at %08x, inode size = %08x!!!\n", ++ (unsigned)(page->index << PAGE_CACHE_SHIFT), ++ (unsigned)inode->i_size)); ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG " -> don't care!!\n")); ++ unlock_page(page); ++ return 0; ++ } ++ ++ end_index = inode->i_size >> PAGE_CACHE_SHIFT; ++ ++ /* easy case */ ++ if (page->index < end_index) { ++ nBytes = PAGE_CACHE_SIZE; ++ } else { ++ nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1); ++ } ++ ++ get_page(page); ++ ++ buffer = kmap(page); ++ ++ obj = yaffs_InodeToObject(inode); ++ yaffs_GrossLock(obj->myDev); ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_writepage at %08x, size %08x\n", ++ (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "writepag0: obj = %05x, ino = %05x\n", ++ (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); ++ ++ nWritten = ++ yaffs_WriteDataToFile(obj, buffer, page->index << PAGE_CACHE_SHIFT, ++ nBytes, 0); ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "writepag1: obj = %05x, ino = %05x\n", ++ (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); ++ ++ yaffs_GrossUnlock(obj->myDev); ++ ++ kunmap(page); ++ SetPageUptodate(page); ++ UnlockPage(page); ++ put_page(page); ++ ++ return (nWritten == nBytes) ? 0 : -ENOSPC; ++} ++ ++static int yaffs_prepare_write(struct file *f, struct page *pg, ++ unsigned offset, unsigned to) ++{ ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n")); ++ if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE)) ++ return yaffs_readpage_nolock(f, pg); ++ ++ return 0; ++ ++} ++ ++static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, ++ unsigned to) ++{ ++ ++ void *addr = page_address(pg) + offset; ++ loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; ++ int nBytes = to - offset; ++ int nWritten; ++ ++ unsigned spos = pos; ++ unsigned saddr = (unsigned)addr; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr, ++ spos, nBytes)); ++ ++ nWritten = yaffs_file_write(f, addr, nBytes, &pos); ++ ++ if (nWritten != nBytes) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG ++ "yaffs_commit_write not same size nWritten %d nBytes %d\n", ++ nWritten, nBytes)); ++ SetPageError(pg); ++ ClearPageUptodate(pg); ++ } else { ++ SetPageUptodate(pg); ++ } ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_commit_write returning %d\n", ++ nWritten == nBytes ? 0 : nWritten)); ++ ++ return nWritten == nBytes ? 0 : nWritten; ++ ++} ++ ++static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj) ++{ ++ if (inode && obj) { ++ ++ ++ /* Check mode against the variant type and attempt to repair if broken. */ ++ __u32 mode = obj->yst_mode; ++ switch( obj->variantType ){ ++ case YAFFS_OBJECT_TYPE_FILE : ++ if( ! S_ISREG(mode) ){ ++ obj->yst_mode &= ~S_IFMT; ++ obj->yst_mode |= S_IFREG; ++ } ++ ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK : ++ if( ! S_ISLNK(mode) ){ ++ obj->yst_mode &= ~S_IFMT; ++ obj->yst_mode |= S_IFLNK; ++ } ++ ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY : ++ if( ! S_ISDIR(mode) ){ ++ obj->yst_mode &= ~S_IFMT; ++ obj->yst_mode |= S_IFDIR; ++ } ++ ++ break; ++ case YAFFS_OBJECT_TYPE_UNKNOWN : ++ case YAFFS_OBJECT_TYPE_HARDLINK : ++ case YAFFS_OBJECT_TYPE_SPECIAL : ++ default: ++ /* TODO? */ ++ break; ++ } ++ ++ inode->i_ino = obj->objectId; ++ inode->i_mode = obj->yst_mode; ++ inode->i_uid = obj->yst_uid; ++ inode->i_gid = obj->yst_gid; ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) ++ inode->i_blksize = inode->i_sb->s_blocksize; ++#endif ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ ++ inode->i_rdev = old_decode_dev(obj->yst_rdev); ++ inode->i_atime.tv_sec = (time_t) (obj->yst_atime); ++ inode->i_atime.tv_nsec = 0; ++ inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; ++ inode->i_mtime.tv_nsec = 0; ++ inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; ++ inode->i_ctime.tv_nsec = 0; ++#else ++ inode->i_rdev = obj->yst_rdev; ++ inode->i_atime = obj->yst_atime; ++ inode->i_mtime = obj->yst_mtime; ++ inode->i_ctime = obj->yst_ctime; ++#endif ++ inode->i_size = yaffs_GetObjectFileLength(obj); ++ inode->i_blocks = (inode->i_size + 511) >> 9; ++ ++ inode->i_nlink = yaffs_GetObjectLinkCount(obj); ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG ++ "yaffs_FillInode mode %x uid %d gid %d size %d count %d\n", ++ inode->i_mode, inode->i_uid, inode->i_gid, ++ (int)inode->i_size, atomic_read(&inode->i_count))); ++ ++ switch (obj->yst_mode & S_IFMT) { ++ default: /* fifo, device or socket */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ init_special_inode(inode, obj->yst_mode, ++ old_decode_dev(obj->yst_rdev)); ++#else ++ init_special_inode(inode, obj->yst_mode, ++ (dev_t) (obj->yst_rdev)); ++#endif ++ break; ++ case S_IFREG: /* file */ ++ inode->i_op = &yaffs_file_inode_operations; ++ inode->i_fop = &yaffs_file_operations; ++ inode->i_mapping->a_ops = ++ &yaffs_file_address_operations; ++ break; ++ case S_IFDIR: /* directory */ ++ inode->i_op = &yaffs_dir_inode_operations; ++ inode->i_fop = &yaffs_dir_operations; ++ break; ++ case S_IFLNK: /* symlink */ ++ inode->i_op = &yaffs_symlink_inode_operations; ++ break; ++ } ++ ++ yaffs_InodeToObjectLV(inode) = obj; ++ ++ obj->myInode = inode; ++ ++ } else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_FileInode invalid parameters\n")); ++ } ++ ++} ++ ++struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, ++ yaffs_Object * obj) ++{ ++ struct inode *inode; ++ ++ if (!sb) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_get_inode for NULL super_block!!\n")); ++ return NULL; ++ ++ } ++ ++ if (!obj) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_get_inode for NULL object!!\n")); ++ return NULL; ++ ++ } ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId)); ++ ++ inode = iget(sb, obj->objectId); ++ ++ /* NB Side effect: iget calls back to yaffs_read_inode(). */ ++ /* iget also increments the inode's i_count */ ++ /* NB You can't be holding grossLock or deadlock will happen! */ ++ ++ return inode; ++} ++ ++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, ++ loff_t * pos) ++{ ++ yaffs_Object *obj; ++ int nWritten, ipos; ++ struct inode *inode; ++ yaffs_Device *dev; ++ ++ obj = yaffs_DentryToObject(f->f_dentry); ++ ++ dev = obj->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ inode = f->f_dentry->d_inode; ++ ++ if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) { ++ ipos = inode->i_size; ++ } else { ++ ipos = *pos; ++ } ++ ++ if (!obj) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_file_write: hey obj is null!\n")); ++ } else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG ++ "yaffs_file_write about to write writing %d bytes" ++ "to object %d at %d\n", ++ n, obj->objectId, ipos)); ++ } ++ ++ nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0); ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_file_write writing %d bytes, %d written at %d\n", ++ n, nWritten, ipos)); ++ if (nWritten > 0) { ++ ipos += nWritten; ++ *pos = ipos; ++ if (ipos > inode->i_size) { ++ inode->i_size = ipos; ++ inode->i_blocks = (ipos + 511) >> 9; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG ++ "yaffs_file_write size updated to %d bytes, " ++ "%d blocks\n", ++ ipos, (int)(inode->i_blocks))); ++ } ++ ++ } ++ yaffs_GrossUnlock(dev); ++ return nWritten == 0 ? -ENOSPC : nWritten; ++} ++ ++static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) ++{ ++ yaffs_Object *obj; ++ yaffs_Device *dev; ++ struct inode *inode = f->f_dentry->d_inode; ++ unsigned long offset, curoffs; ++ struct list_head *i; ++ yaffs_Object *l; ++ ++ char name[YAFFS_MAX_NAME_LENGTH + 1]; ++ ++ obj = yaffs_DentryToObject(f->f_dentry); ++ dev = obj->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ offset = f->f_pos; ++ ++ T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset)); ++ ++ if (offset == 0) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_readdir: entry . ino %d \n", ++ (int)inode->i_ino)); ++ if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) ++ < 0) { ++ goto out; ++ } ++ offset++; ++ f->f_pos++; ++ } ++ if (offset == 1) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_readdir: entry .. ino %d \n", ++ (int)f->f_dentry->d_parent->d_inode->i_ino)); ++ if (filldir ++ (dirent, "..", 2, offset, ++ f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) { ++ goto out; ++ } ++ offset++; ++ f->f_pos++; ++ } ++ ++ curoffs = 1; ++ ++ /* If the directory has changed since the open or last call to ++ readdir, rewind to after the 2 canned entries. */ ++ ++ if (f->f_version != inode->i_version) { ++ offset = 2; ++ f->f_pos = offset; ++ f->f_version = inode->i_version; ++ } ++ ++ list_for_each(i, &obj->variant.directoryVariant.children) { ++ curoffs++; ++ if (curoffs >= offset) { ++ l = list_entry(i, yaffs_Object, siblings); ++ ++ yaffs_GetObjectName(l, name, ++ YAFFS_MAX_NAME_LENGTH + 1); ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_readdir: %s inode %d\n", name, ++ yaffs_GetObjectInode(l))); ++ ++ if (filldir(dirent, ++ name, ++ strlen(name), ++ offset, ++ yaffs_GetObjectInode(l), ++ yaffs_GetObjectType(l)) ++ < 0) { ++ goto up_and_out; ++ } ++ ++ offset++; ++ f->f_pos++; ++ } ++ } ++ ++ up_and_out: ++ out: ++ ++ yaffs_GrossUnlock(dev); ++ ++ return 0; ++} ++ ++/* ++ * File creation. Allocate an inode, and we're done.. ++ */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, ++ dev_t rdev) ++#else ++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, ++ int rdev) ++#endif ++{ ++ struct inode *inode; ++ ++ yaffs_Object *obj = NULL; ++ yaffs_Device *dev; ++ ++ yaffs_Object *parent = yaffs_InodeToObject(dir); ++ ++ int error = -ENOSPC; ++ uid_t uid = current->fsuid; ++ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid; ++ ++ if((dir->i_mode & S_ISGID) && S_ISDIR(mode)) ++ mode |= S_ISGID; ++ ++ if (parent) { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_mknod: parent object %d type %d\n", ++ parent->objectId, parent->variantType)); ++ } else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_mknod: could not get parent object\n")); ++ return -EPERM; ++ } ++ ++ T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, " ++ "mode %x dev %x\n", ++ dentry->d_name.name, mode, rdev)); ++ ++ dev = parent->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ switch (mode & S_IFMT) { ++ default: ++ /* Special (socket, fifo, device...) */ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG ++ "yaffs_mknod: making special\n")); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ obj = ++ yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, ++ gid, old_encode_dev(rdev)); ++#else ++ obj = ++ yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, ++ gid, rdev); ++#endif ++ break; ++ case S_IFREG: /* file */ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n")); ++ obj = ++ yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, ++ gid); ++ break; ++ case S_IFDIR: /* directory */ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_mknod: making directory\n")); ++ obj = ++ yaffs_MknodDirectory(parent, dentry->d_name.name, mode, ++ uid, gid); ++ break; ++ case S_IFLNK: /* symlink */ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n")); ++ obj = NULL; /* Do we ever get here? */ ++ break; ++ } ++ ++ /* Can not call yaffs_get_inode() with gross lock held */ ++ yaffs_GrossUnlock(dev); ++ ++ if (obj) { ++ inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); ++ d_instantiate(dentry, inode); ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_mknod created object %d count = %d\n", ++ obj->objectId, atomic_read(&inode->i_count))); ++ error = 0; ++ } else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_mknod failed making object\n")); ++ error = -ENOMEM; ++ } ++ ++ return error; ++} ++ ++static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) ++{ ++ int retVal; ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mkdir\n")); ++ retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); ++#if 0 ++ /* attempt to fix dir bug - didn't work */ ++ if (!retVal) { ++ dget(dentry); ++ } ++#endif ++ return retVal; ++} ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, ++ struct nameidata *n) ++#else ++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) ++#endif ++{ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_create\n")); ++ return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); ++} ++ ++static int yaffs_unlink(struct inode *dir, struct dentry *dentry) ++{ ++ int retVal; ++ ++ yaffs_Device *dev; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_unlink %d:%s\n", (int)(dir->i_ino), ++ dentry->d_name.name)); ++ ++ dev = yaffs_InodeToObject(dir)->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ retVal = yaffs_Unlink(yaffs_InodeToObject(dir), dentry->d_name.name); ++ ++ if (retVal == YAFFS_OK) { ++ dentry->d_inode->i_nlink--; ++ dir->i_version++; ++ yaffs_GrossUnlock(dev); ++ mark_inode_dirty(dentry->d_inode); ++ return 0; ++ } ++ yaffs_GrossUnlock(dev); ++ return -ENOTEMPTY; ++} ++ ++/* ++ * Create a link... ++ */ ++static int yaffs_link(struct dentry *old_dentry, struct inode *dir, ++ struct dentry *dentry) ++{ ++ struct inode *inode = old_dentry->d_inode; ++ yaffs_Object *obj = NULL; ++ yaffs_Object *link = NULL; ++ yaffs_Device *dev; ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_link\n")); ++ ++ obj = yaffs_InodeToObject(inode); ++ dev = obj->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ ++ { ++ link = ++ yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, ++ obj); ++ } ++ ++ if (link) { ++ old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj); ++ d_instantiate(dentry, old_dentry->d_inode); ++ atomic_inc(&old_dentry->d_inode->i_count); ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_link link count %d i_count %d\n", ++ old_dentry->d_inode->i_nlink, ++ atomic_read(&old_dentry->d_inode->i_count))); ++ ++ } ++ ++ yaffs_GrossUnlock(dev); ++ ++ if (link) { ++ ++ return 0; ++ } ++ ++ return -EPERM; ++} ++ ++static int yaffs_symlink(struct inode *dir, struct dentry *dentry, ++ const char *symname) ++{ ++ yaffs_Object *obj; ++ yaffs_Device *dev; ++ uid_t uid = current->fsuid; ++ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid; ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_symlink\n")); ++ ++ dev = yaffs_InodeToObject(dir)->myDev; ++ yaffs_GrossLock(dev); ++ obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, ++ S_IFLNK | S_IRWXUGO, uid, gid, symname); ++ yaffs_GrossUnlock(dev); ++ ++ if (obj) { ++ ++ struct inode *inode; ++ ++ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); ++ d_instantiate(dentry, inode); ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n")); ++ return 0; ++ } else { ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink not created\n")); ++ ++ } ++ ++ return -ENOMEM; ++} ++ ++static int yaffs_sync_object(struct file *file, struct dentry *dentry, ++ int datasync) ++{ ++ ++ yaffs_Object *obj; ++ yaffs_Device *dev; ++ ++ obj = yaffs_DentryToObject(dentry); ++ ++ dev = obj->myDev; ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n")); ++ yaffs_GrossLock(dev); ++ yaffs_FlushFile(obj, 1); ++ yaffs_GrossUnlock(dev); ++ return 0; ++} ++ ++/* ++ * The VFS layer already does all the dentry stuff for rename. ++ * ++ * NB: POSIX says you can rename an object over an old object of the same name ++ */ ++static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, ++ struct inode *new_dir, struct dentry *new_dentry) ++{ ++ yaffs_Device *dev; ++ int retVal = YAFFS_FAIL; ++ yaffs_Object *target; ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_rename\n")); ++ dev = yaffs_InodeToObject(old_dir)->myDev; ++ ++ yaffs_GrossLock(dev); ++ ++ /* Check if the target is an existing directory that is not empty. */ ++ target = ++ yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), ++ new_dentry->d_name.name); ++ ++ ++ ++ if (target && ++ target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && ++ !list_empty(&target->variant.directoryVariant.children)) { ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n")); ++ ++ retVal = YAFFS_FAIL; ++ } else { ++ ++ /* Now does unlinking internally using shadowing mechanism */ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n")); ++ ++ retVal = ++ yaffs_RenameObject(yaffs_InodeToObject(old_dir), ++ old_dentry->d_name.name, ++ yaffs_InodeToObject(new_dir), ++ new_dentry->d_name.name); ++ ++ } ++ yaffs_GrossUnlock(dev); ++ ++ if (retVal == YAFFS_OK) { ++ if(target) { ++ new_dentry->d_inode->i_nlink--; ++ mark_inode_dirty(new_dentry->d_inode); ++ } ++ ++ return 0; ++ } else { ++ return -ENOTEMPTY; ++ } ++ ++} ++ ++static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) ++{ ++ struct inode *inode = dentry->d_inode; ++ int error; ++ yaffs_Device *dev; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_setattr of object %d\n", ++ yaffs_InodeToObject(inode)->objectId)); ++ ++ if ((error = inode_change_ok(inode, attr)) == 0) { ++ ++ dev = yaffs_InodeToObject(inode)->myDev; ++ yaffs_GrossLock(dev); ++ if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) == ++ YAFFS_OK) { ++ error = 0; ++ } else { ++ error = -EPERM; ++ } ++ yaffs_GrossUnlock(dev); ++ if (!error) ++ error = inode_setattr(inode, attr); ++ } ++ return error; ++} ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) ++{ ++ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; ++ struct super_block *sb = dentry->d_sb; ++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) ++{ ++ yaffs_Device *dev = yaffs_SuperToDevice(sb); ++#else ++static int yaffs_statfs(struct super_block *sb, struct statfs *buf) ++{ ++ yaffs_Device *dev = yaffs_SuperToDevice(sb); ++#endif ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n")); ++ ++ yaffs_GrossLock(dev); ++ ++ buf->f_type = YAFFS_MAGIC; ++ buf->f_bsize = sb->s_blocksize; ++ buf->f_namelen = 255; ++ if (sb->s_blocksize > dev->nDataBytesPerChunk) { ++ ++ buf->f_blocks = ++ (dev->endBlock - dev->startBlock + ++ 1) * dev->nChunksPerBlock / (sb->s_blocksize / ++ dev->nDataBytesPerChunk); ++ buf->f_bfree = ++ yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize / ++ dev->nDataBytesPerChunk); ++ } else { ++ ++ buf->f_blocks = ++ (dev->endBlock - dev->startBlock + ++ 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk / ++ sb->s_blocksize); ++ buf->f_bfree = ++ yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk / ++ sb->s_blocksize); ++ } ++ buf->f_files = 0; ++ buf->f_ffree = 0; ++ buf->f_bavail = buf->f_bfree; ++ ++ yaffs_GrossUnlock(dev); ++ return 0; ++} ++ ++ ++/** ++static int yaffs_do_sync_fs(struct super_block *sb) ++{ ++ ++ yaffs_Device *dev = yaffs_SuperToDevice(sb); ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_do_sync_fs\n")); ++ ++ if(sb->s_dirt) { ++ yaffs_GrossLock(dev); ++ ++ if(dev) ++ yaffs_CheckpointSave(dev); ++ ++ yaffs_GrossUnlock(dev); ++ ++ sb->s_dirt = 0; ++ } ++ return 0; ++} ++**/ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static void yaffs_write_super(struct super_block *sb) ++#else ++static int yaffs_write_super(struct super_block *sb) ++#endif ++{ ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n")); ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) ++ return 0; /* yaffs_do_sync_fs(sb);*/ ++#endif ++} ++ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_sync_fs(struct super_block *sb, int wait) ++#else ++static int yaffs_sync_fs(struct super_block *sb) ++#endif ++{ ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n")); ++ ++ return 0; /* yaffs_do_sync_fs(sb);*/ ++ ++} ++ ++ ++static void yaffs_read_inode(struct inode *inode) ++{ ++ /* NB This is called as a side effect of other functions, but ++ * we had to release the lock to prevent deadlocks, so ++ * need to lock again. ++ */ ++ ++ yaffs_Object *obj; ++ yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino)); ++ ++ yaffs_GrossLock(dev); ++ ++ obj = yaffs_FindObjectByNumber(dev, inode->i_ino); ++ ++ yaffs_FillInodeFromObject(inode, obj); ++ ++ yaffs_GrossUnlock(dev); ++} ++ ++static LIST_HEAD(yaffs_dev_list); ++ ++static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) ++{ ++ yaffs_Device *dev = yaffs_SuperToDevice(sb); ++ ++ if( *flags & MS_RDONLY ) { ++ struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; ++ ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name )); ++ ++ yaffs_GrossLock(dev); ++ ++ yaffs_FlushEntireDeviceCache(dev); ++ ++ yaffs_CheckpointSave(dev); ++ ++ if (mtd->sync) ++ mtd->sync(mtd); ++ ++ yaffs_GrossUnlock(dev); ++ } ++ else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name )); ++ } ++ ++ return 0; ++} ++ ++static void yaffs_put_super(struct super_block *sb) ++{ ++ yaffs_Device *dev = yaffs_SuperToDevice(sb); ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n")); ++ ++ yaffs_GrossLock(dev); ++ ++ yaffs_FlushEntireDeviceCache(dev); ++ ++ yaffs_CheckpointSave(dev); ++ ++ if (dev->putSuperFunc) { ++ dev->putSuperFunc(sb); ++ } ++ ++ yaffs_Deinitialise(dev); ++ ++ yaffs_GrossUnlock(dev); ++ ++ /* we assume this is protected by lock_kernel() in mount/umount */ ++ list_del(&dev->devList); ++ ++ if(dev->spareBuffer){ ++ YFREE(dev->spareBuffer); ++ dev->spareBuffer = NULL; ++ } ++ ++ kfree(dev); ++} ++ ++ ++static void yaffs_MTDPutSuper(struct super_block *sb) ++{ ++ ++ struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; ++ ++ if (mtd->sync) { ++ mtd->sync(mtd); ++ } ++ ++ put_mtd_device(mtd); ++} ++ ++ ++static void yaffs_MarkSuperBlockDirty(void *vsb) ++{ ++ struct super_block *sb = (struct super_block *)vsb; ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb)); ++// if(sb) ++// sb->s_dirt = 1; ++} ++ ++typedef struct { ++ int inband_tags; ++ int skip_checkpoint_read; ++ int skip_checkpoint_write; ++ int no_cache; ++} yaffs_options; ++ ++#define MAX_OPT_LEN 20 ++static int yaffs_parse_options(yaffs_options *options, const char *options_str) ++{ ++ char cur_opt[MAX_OPT_LEN+1]; ++ int p; ++ int error = 0; ++ ++ /* Parse through the options which is a comma seperated list */ ++ ++ while(options_str && *options_str && !error){ ++ memset(cur_opt,0,MAX_OPT_LEN+1); ++ p = 0; ++ ++ while(*options_str && *options_str != ','){ ++ if(p < MAX_OPT_LEN){ ++ cur_opt[p] = *options_str; ++ p++; ++ } ++ options_str++; ++ } ++ ++ if(!strcmp(cur_opt,"inband-tags")) ++ options->inband_tags = 1; ++ else if(!strcmp(cur_opt,"no-cache")) ++ options->no_cache = 1; ++ else if(!strcmp(cur_opt,"no-checkpoint-read")) ++ options->skip_checkpoint_read = 1; ++ else if(!strcmp(cur_opt,"no-checkpoint-write")) ++ options->skip_checkpoint_write = 1; ++ else if(!strcmp(cur_opt,"no-checkpoint")){ ++ options->skip_checkpoint_read = 1; ++ options->skip_checkpoint_write = 1; ++ } else { ++ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt); ++ error = 1; ++ } ++ ++ } ++ ++ return error; ++} ++ ++static struct super_block *yaffs_internal_read_super(int yaffsVersion, ++ struct super_block *sb, ++ void *data, int silent) ++{ ++ int nBlocks; ++ struct inode *inode = NULL; ++ struct dentry *root; ++ yaffs_Device *dev = 0; ++ char devname_buf[BDEVNAME_SIZE + 1]; ++ struct mtd_info *mtd; ++ int err; ++ char *data_str = (char *)data; ++ ++ yaffs_options options; ++ ++ sb->s_magic = YAFFS_MAGIC; ++ sb->s_op = &yaffs_super_ops; ++ ++ if (!sb) ++ printk(KERN_INFO "yaffs: sb is NULL\n"); ++ else if (!sb->s_dev) ++ printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); ++ else if (!yaffs_devname(sb, devname_buf)) ++ printk(KERN_INFO "yaffs: devname is NULL\n"); ++ else ++ printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n", ++ sb->s_dev, ++ yaffs_devname(sb, devname_buf)); ++ ++ if(!data_str) ++ data_str = ""; ++ ++ printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str); ++ ++ memset(&options,0,sizeof(options)); ++ ++ if(yaffs_parse_options(&options,data_str)){ ++ /* Option parsing failed */ ++ return NULL; ++ } ++ ++ ++ sb->s_blocksize = PAGE_CACHE_SIZE; ++ sb->s_blocksize_bits = PAGE_CACHE_SHIFT; ++ T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion)); ++ T(YAFFS_TRACE_OS, ++ ("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize))); ++ ++#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY ++ T(YAFFS_TRACE_OS, ++ ("yaffs: Write verification disabled. All guarantees " ++ "null and void\n")); ++#endif ++ ++ T(YAFFS_TRACE_ALWAYS, ("yaffs: Attempting MTD mount on %u.%u, " ++ "\"%s\"\n", ++ MAJOR(sb->s_dev), MINOR(sb->s_dev), ++ yaffs_devname(sb, devname_buf))); ++ ++ /* Check it's an mtd device..... */ ++ if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) { ++ return NULL; /* This isn't an mtd device */ ++ } ++ /* Get the device */ ++ mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); ++ if (!mtd) { ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs: MTD device #%u doesn't appear to exist\n", ++ MINOR(sb->s_dev))); ++ return NULL; ++ } ++ /* Check it's NAND */ ++ if (mtd->type != MTD_NANDFLASH) { ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs: MTD device is not NAND it's type %d\n", mtd->type)); ++ return NULL; ++ } ++ ++ T(YAFFS_TRACE_OS, (" erase %p\n", mtd->erase)); ++ T(YAFFS_TRACE_OS, (" read %p\n", mtd->read)); ++ T(YAFFS_TRACE_OS, (" write %p\n", mtd->write)); ++ T(YAFFS_TRACE_OS, (" readoob %p\n", mtd->read_oob)); ++ T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob)); ++ T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad)); ++ T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad)); ++ T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd))); ++ T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); ++ T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); ++ T(YAFFS_TRACE_OS, (" size %d\n", mtd->size)); ++ ++#ifdef CONFIG_YAFFS_AUTO_YAFFS2 ++ ++ if (yaffsVersion == 1 && ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ mtd->writesize >= 2048) { ++#else ++ mtd->oobblock >= 2048) { ++#endif ++ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n")); ++ yaffsVersion = 2; ++ } ++ ++ /* Added NCB 26/5/2006 for completeness */ ++ if (yaffsVersion == 2 && ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ mtd->writesize == 512) { ++#else ++ mtd->oobblock == 512) { ++#endif ++ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n")); ++ yaffsVersion = 1; ++ } ++ ++#endif ++ ++ if (yaffsVersion == 2) { ++ /* Check for version 2 style functions */ ++ if (!mtd->erase || ++ !mtd->block_isbad || ++ !mtd->block_markbad || ++ !mtd->read || ++ !mtd->write || ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ !mtd->read_oob || !mtd->write_oob) { ++#else ++ !mtd->write_ecc || ++ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { ++#endif ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs: MTD device does not support required " ++ "functions\n"));; ++ return NULL; ++ } ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE || ++#else ++ if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE || ++#endif ++ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) { ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs: MTD device does not have the " ++ "right page sizes\n")); ++ return NULL; ++ } ++ } else { ++ /* Check for V1 style functions */ ++ if (!mtd->erase || ++ !mtd->read || ++ !mtd->write || ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ !mtd->read_oob || !mtd->write_oob) { ++#else ++ !mtd->write_ecc || ++ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { ++#endif ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs: MTD device does not support required " ++ "functions\n"));; ++ return NULL; ++ } ++ ++ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || ++ mtd->oobsize != YAFFS_BYTES_PER_SPARE) { ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs: MTD device does not support have the " ++ "right page sizes\n")); ++ return NULL; ++ } ++ } ++ ++ /* OK, so if we got here, we have an MTD that's NAND and looks ++ * like it has the right capabilities ++ * Set the yaffs_Device up for mtd ++ */ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++ sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); ++#else ++ sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); ++#endif ++ if (!dev) { ++ /* Deep shit could not allocate device structure */ ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs_read_super: Failed trying to allocate " ++ "yaffs_Device. \n")); ++ return NULL; ++ } ++ ++ memset(dev, 0, sizeof(yaffs_Device)); ++ dev->genericDevice = mtd; ++ dev->name = mtd->name; ++ ++ /* Set up the memory size parameters.... */ ++ ++ nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK); ++ dev->startBlock = 0; ++ dev->endBlock = nBlocks - 1; ++ dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; ++ dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK; ++ dev->nReservedBlocks = 5; ++ dev->nShortOpCaches = (options.no_cache) ? 0 : 10; ++ ++ /* ... and the functions. */ ++ if (yaffsVersion == 2) { ++ dev->writeChunkWithTagsToNAND = ++ nandmtd2_WriteChunkWithTagsToNAND; ++ dev->readChunkWithTagsFromNAND = ++ nandmtd2_ReadChunkWithTagsFromNAND; ++ dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; ++ dev->queryNANDBlock = nandmtd2_QueryNANDBlock; ++ dev->spareBuffer = YMALLOC(mtd->oobsize); ++ dev->isYaffs2 = 1; ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ dev->nDataBytesPerChunk = mtd->writesize; ++ dev->nChunksPerBlock = mtd->erasesize / mtd->writesize; ++#else ++ dev->nDataBytesPerChunk = mtd->oobblock; ++ dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock; ++#endif ++ nBlocks = mtd->size / mtd->erasesize; ++ ++ dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS; ++ dev->startBlock = 0; ++ dev->endBlock = nBlocks - 1; ++ } else { ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ /* use the MTD interface in yaffs_mtdif1.c */ ++ dev->writeChunkWithTagsToNAND = ++ nandmtd1_WriteChunkWithTagsToNAND; ++ dev->readChunkWithTagsFromNAND = ++ nandmtd1_ReadChunkWithTagsFromNAND; ++ dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; ++ dev->queryNANDBlock = nandmtd1_QueryNANDBlock; ++#else ++ dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; ++ dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; ++#endif ++ dev->isYaffs2 = 0; ++ } ++ /* ... and common functions */ ++ dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND; ++ dev->initialiseNAND = nandmtd_InitialiseNAND; ++ ++ dev->putSuperFunc = yaffs_MTDPutSuper; ++ ++ dev->superBlock = (void *)sb; ++ dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; ++ ++ ++#ifndef CONFIG_YAFFS_DOES_ECC ++ dev->useNANDECC = 1; ++#endif ++ ++#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES ++ dev->wideTnodesDisabled = 1; ++#endif ++ ++ dev->skipCheckpointRead = options.skip_checkpoint_read; ++ dev->skipCheckpointWrite = options.skip_checkpoint_write; ++ ++ /* we assume this is protected by lock_kernel() in mount/umount */ ++ list_add_tail(&dev->devList, &yaffs_dev_list); ++ ++ init_MUTEX(&dev->grossLock); ++ ++ yaffs_GrossLock(dev); ++ ++ err = yaffs_GutsInitialise(dev); ++ ++ T(YAFFS_TRACE_OS, ++ ("yaffs_read_super: guts initialised %s\n", ++ (err == YAFFS_OK) ? "OK" : "FAILED")); ++ ++ /* Release lock before yaffs_get_inode() */ ++ yaffs_GrossUnlock(dev); ++ ++ /* Create root inode */ ++ if (err == YAFFS_OK) ++ inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, ++ yaffs_Root(dev)); ++ ++ if (!inode) ++ return NULL; ++ ++ inode->i_op = &yaffs_dir_inode_operations; ++ inode->i_fop = &yaffs_dir_operations; ++ ++ T(YAFFS_TRACE_OS, ("yaffs_read_super: got root inode\n")); ++ ++ root = d_alloc_root(inode); ++ ++ T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n")); ++ ++ if (!root) { ++ iput(inode); ++ return NULL; ++ } ++ sb->s_root = root; ++ ++ T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n")); ++ return sb; ++} ++ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, ++ int silent) ++{ ++ return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; ++} ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs_read_super(struct file_system_type *fs, ++ int flags, const char *dev_name, ++ void *data, struct vfsmount *mnt) ++{ ++ ++ return get_sb_bdev(fs, flags, dev_name, data, ++ yaffs_internal_read_super_mtd, mnt); ++} ++#else ++static struct super_block *yaffs_read_super(struct file_system_type *fs, ++ int flags, const char *dev_name, ++ void *data) ++{ ++ ++ return get_sb_bdev(fs, flags, dev_name, data, ++ yaffs_internal_read_super_mtd); ++} ++#endif ++ ++static struct file_system_type yaffs_fs_type = { ++ .owner = THIS_MODULE, ++ .name = "yaffs", ++ .get_sb = yaffs_read_super, ++ .kill_sb = kill_block_super, ++ .fs_flags = FS_REQUIRES_DEV, ++}; ++#else ++static struct super_block *yaffs_read_super(struct super_block *sb, void *data, ++ int silent) ++{ ++ return yaffs_internal_read_super(1, sb, data, silent); ++} ++ ++static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, ++ FS_REQUIRES_DEV); ++#endif ++ ++ ++#ifdef CONFIG_YAFFS_YAFFS2 ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, ++ int silent) ++{ ++ return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; ++} ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static int yaffs2_read_super(struct file_system_type *fs, ++ int flags, const char *dev_name, void *data, ++ struct vfsmount *mnt) ++{ ++ return get_sb_bdev(fs, flags, dev_name, data, ++ yaffs2_internal_read_super_mtd, mnt); ++} ++#else ++static struct super_block *yaffs2_read_super(struct file_system_type *fs, ++ int flags, const char *dev_name, ++ void *data) ++{ ++ ++ return get_sb_bdev(fs, flags, dev_name, data, ++ yaffs2_internal_read_super_mtd); ++} ++#endif ++ ++static struct file_system_type yaffs2_fs_type = { ++ .owner = THIS_MODULE, ++ .name = "yaffs2", ++ .get_sb = yaffs2_read_super, ++ .kill_sb = kill_block_super, ++ .fs_flags = FS_REQUIRES_DEV, ++}; ++#else ++static struct super_block *yaffs2_read_super(struct super_block *sb, ++ void *data, int silent) ++{ ++ return yaffs_internal_read_super(2, sb, data, silent); ++} ++ ++static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, ++ FS_REQUIRES_DEV); ++#endif ++ ++#endif /* CONFIG_YAFFS_YAFFS2 */ ++ ++static struct proc_dir_entry *my_proc_entry; ++ ++static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) ++{ ++ buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock); ++ buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock); ++ buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); ++ buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); ++ buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); ++ buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); ++ buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); ++ buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks); ++ buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); ++ buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); ++ buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); ++ buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated); ++ buf += sprintf(buf, "nFreeObjects....... %d\n", dev->nFreeObjects); ++ buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks); ++ buf += sprintf(buf, "nPageWrites........ %d\n", dev->nPageWrites); ++ buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads); ++ buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures); ++ buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies); ++ buf += ++ sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections); ++ buf += ++ sprintf(buf, "passiveGCs......... %d\n", ++ dev->passiveGarbageCollections); ++ buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites); ++ buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches); ++ buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks); ++ buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed); ++ buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed); ++ buf += sprintf(buf, "tagsEccFixed....... %d\n", dev->tagsEccFixed); ++ buf += sprintf(buf, "tagsEccUnfixed..... %d\n", dev->tagsEccUnfixed); ++ buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits); ++ buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles); ++ buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles); ++ buf += ++ sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions); ++ buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC); ++ buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2); ++ ++ return buf; ++} ++ ++static int yaffs_proc_read(char *page, ++ char **start, ++ off_t offset, int count, int *eof, void *data) ++{ ++ struct list_head *item; ++ char *buf = page; ++ int step = offset; ++ int n = 0; ++ ++ /* Get proc_file_read() to step 'offset' by one on each sucessive call. ++ * We use 'offset' (*ppos) to indicate where we are in devList. ++ * This also assumes the user has posted a read buffer large ++ * enough to hold the complete output; but that's life in /proc. ++ */ ++ ++ *(int *)start = 1; ++ ++ /* Print header first */ ++ if (step == 0) { ++ buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__ ++ "\n%s\n%s\n", yaffs_fs_c_version, ++ yaffs_guts_c_version); ++ } ++ ++ /* hold lock_kernel while traversing yaffs_dev_list */ ++ lock_kernel(); ++ ++ /* Locate and print the Nth entry. Order N-squared but N is small. */ ++ list_for_each(item, &yaffs_dev_list) { ++ yaffs_Device *dev = list_entry(item, yaffs_Device, devList); ++ if (n < step) { ++ n++; ++ continue; ++ } ++ buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name); ++ buf = yaffs_dump_dev(buf, dev); ++ break; ++ } ++ unlock_kernel(); ++ ++ return buf - page < count ? buf - page : count; ++} ++ ++/** ++ * Set the verbosity of the warnings and error messages. ++ * ++ * Note that the names can only be a..z or _ with the current code. ++ */ ++ ++static struct { ++ char *mask_name; ++ unsigned mask_bitfield; ++} mask_flags[] = { ++ {"allocate", YAFFS_TRACE_ALLOCATE}, ++ {"always", YAFFS_TRACE_ALWAYS}, ++ {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, ++ {"buffers", YAFFS_TRACE_BUFFERS}, ++ {"bug", YAFFS_TRACE_BUG}, ++ {"checkpt", YAFFS_TRACE_CHECKPOINT}, ++ {"deletion", YAFFS_TRACE_DELETION}, ++ {"erase", YAFFS_TRACE_ERASE}, ++ {"error", YAFFS_TRACE_ERROR}, ++ {"gc_detail", YAFFS_TRACE_GC_DETAIL}, ++ {"gc", YAFFS_TRACE_GC}, ++ {"mtd", YAFFS_TRACE_MTD}, ++ {"nandaccess", YAFFS_TRACE_NANDACCESS}, ++ {"os", YAFFS_TRACE_OS}, ++ {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, ++ {"scan", YAFFS_TRACE_SCAN}, ++ {"tracing", YAFFS_TRACE_TRACING}, ++ ++ {"verify", YAFFS_TRACE_VERIFY}, ++ {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, ++ {"verify_full", YAFFS_TRACE_VERIFY_FULL}, ++ {"verify_all", YAFFS_TRACE_VERIFY_ALL}, ++ ++ {"write", YAFFS_TRACE_WRITE}, ++ {"all", 0xffffffff}, ++ {"none", 0}, ++ {NULL, 0}, ++}; ++ ++#define MAX_MASK_NAME_LENGTH 40 ++static int yaffs_proc_write(struct file *file, const char *buf, ++ unsigned long count, void *data) ++{ ++ unsigned rg = 0, mask_bitfield; ++ char *end; ++ char *mask_name; ++ char *x; ++ char substring[MAX_MASK_NAME_LENGTH+1]; ++ int i; ++ int done = 0; ++ int add, len = 0; ++ int pos = 0; ++ ++ rg = yaffs_traceMask; ++ ++ while (!done && (pos < count)) { ++ done = 1; ++ while ((pos < count) && isspace(buf[pos])) { ++ pos++; ++ } ++ ++ switch (buf[pos]) { ++ case '+': ++ case '-': ++ case '=': ++ add = buf[pos]; ++ pos++; ++ break; ++ ++ default: ++ add = ' '; ++ break; ++ } ++ mask_name = NULL; ++ ++ mask_bitfield = simple_strtoul(buf + pos, &end, 0); ++ if (end > buf + pos) { ++ mask_name = "numeral"; ++ len = end - (buf + pos); ++ done = 0; ++ } else { ++ for(x = buf + pos, i = 0; ++ (*x == '_' || (*x >='a' && *x <= 'z')) && ++ i <MAX_MASK_NAME_LENGTH; x++, i++, pos++) ++ substring[i] = *x; ++ substring[i] = '\0'; ++ ++ for (i = 0; mask_flags[i].mask_name != NULL; i++) { ++ //len = strlen(mask_flags[i].mask_name); ++ //if (strncmp(buf + pos, mask_flags[i].mask_name, len) == 0) { ++ if(strcmp(substring,mask_flags[i].mask_name) == 0){ ++ mask_name = mask_flags[i].mask_name; ++ mask_bitfield = mask_flags[i].mask_bitfield; ++ done = 0; ++ break; ++ } ++ } ++ } ++ ++ if (mask_name != NULL) { ++ // pos += len; ++ done = 0; ++ switch(add) { ++ case '-': ++ rg &= ~mask_bitfield; ++ break; ++ case '+': ++ rg |= mask_bitfield; ++ break; ++ case '=': ++ rg = mask_bitfield; ++ break; ++ default: ++ rg |= mask_bitfield; ++ break; ++ } ++ } ++ } ++ ++ yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; ++ ++ printk("new trace = 0x%08X\n",yaffs_traceMask); ++ ++ if (rg & YAFFS_TRACE_ALWAYS) { ++ for (i = 0; mask_flags[i].mask_name != NULL; i++) { ++ char flag; ++ flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-'; ++ printk("%c%s\n", flag, mask_flags[i].mask_name); ++ } ++ } ++ ++ return count; ++} ++ ++/* Stuff to handle installation of file systems */ ++struct file_system_to_install { ++ struct file_system_type *fst; ++ int installed; ++}; ++ ++static struct file_system_to_install fs_to_install[] = { ++//#ifdef CONFIG_YAFFS_YAFFS1 ++ {&yaffs_fs_type, 0}, ++//#endif ++//#ifdef CONFIG_YAFFS_YAFFS2 ++ {&yaffs2_fs_type, 0}, ++//#endif ++ {NULL, 0} ++}; ++ ++static int __init init_yaffs_fs(void) ++{ ++ int error = 0; ++ struct file_system_to_install *fsinst; ++ ++ T(YAFFS_TRACE_ALWAYS, ++ ("yaffs " __DATE__ " " __TIME__ " Installing. \n")); ++ ++ /* Install the proc_fs entry */ ++ my_proc_entry = create_proc_entry("yaffs", ++ S_IRUGO | S_IFREG, ++ &proc_root); ++ ++ if (my_proc_entry) { ++ my_proc_entry->write_proc = yaffs_proc_write; ++ my_proc_entry->read_proc = yaffs_proc_read; ++ my_proc_entry->data = NULL; ++ } else { ++ return -ENOMEM; ++ } ++ ++ /* Now add the file system entries */ ++ ++ fsinst = fs_to_install; ++ ++ while (fsinst->fst && !error) { ++ error = register_filesystem(fsinst->fst); ++ if (!error) { ++ fsinst->installed = 1; ++ } ++ fsinst++; ++ } ++ ++ /* Any errors? uninstall */ ++ if (error) { ++ fsinst = fs_to_install; ++ ++ while (fsinst->fst) { ++ if (fsinst->installed) { ++ unregister_filesystem(fsinst->fst); ++ fsinst->installed = 0; ++ } ++ fsinst++; ++ } ++ } ++ ++ return error; ++} ++ ++static void __exit exit_yaffs_fs(void) ++{ ++ ++ struct file_system_to_install *fsinst; ++ ++ T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__ ++ " removing. \n")); ++ ++ remove_proc_entry("yaffs", &proc_root); ++ ++ fsinst = fs_to_install; ++ ++ while (fsinst->fst) { ++ if (fsinst->installed) { ++ unregister_filesystem(fsinst->fst); ++ fsinst->installed = 0; ++ } ++ fsinst++; ++ } ++ ++} ++ ++module_init(init_yaffs_fs) ++module_exit(exit_yaffs_fs) ++ ++MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); ++MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006"); ++MODULE_LICENSE("GPL"); +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_guts.c linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_guts.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,7469 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++const char *yaffs_guts_c_version = ++ "$Id: yaffs_guts.c,v 1.49 2007-05-15 20:07:40 charles Exp $"; ++ ++#include "yportenv.h" ++ ++#include "yaffsinterface.h" ++#include "yaffs_guts.h" ++#include "yaffs_tagsvalidity.h" ++ ++#include "yaffs_tagscompat.h" ++#ifndef CONFIG_YAFFS_USE_OWN_SORT ++#include "yaffs_qsort.h" ++#endif ++#include "yaffs_nand.h" ++ ++#include "yaffs_checkptrw.h" ++ ++#include "yaffs_nand.h" ++#include "yaffs_packedtags2.h" ++ ++ ++#ifdef CONFIG_YAFFS_WINCE ++void yfsd_LockYAFFS(BOOL fsLockOnly); ++void yfsd_UnlockYAFFS(BOOL fsLockOnly); ++#endif ++ ++#define YAFFS_PASSIVE_GC_CHUNKS 2 ++ ++#include "yaffs_ecc.h" ++ ++ ++/* Robustification (if it ever comes about...) */ ++static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND); ++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk); ++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * tags); ++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, ++ const yaffs_ExtendedTags * tags); ++ ++/* Other local prototypes */ ++static int yaffs_UnlinkObject( yaffs_Object *obj); ++static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj); ++ ++static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList); ++ ++static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device * dev, ++ const __u8 * buffer, ++ yaffs_ExtendedTags * tags, ++ int useReserve); ++static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode, ++ int chunkInNAND, int inScan); ++ ++static yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number, ++ yaffs_ObjectType type); ++static void yaffs_AddObjectToDirectory(yaffs_Object * directory, ++ yaffs_Object * obj); ++static int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name, ++ int force, int isShrink, int shadows); ++static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj); ++static int yaffs_CheckStructures(void); ++static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level, ++ int chunkOffset, int *limit); ++static int yaffs_DoGenericObjectDeletion(yaffs_Object * in); ++ ++static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blockNo); ++ ++static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo); ++static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer, ++ int lineNo); ++ ++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND); ++ ++static int yaffs_UnlinkWorker(yaffs_Object * obj); ++static void yaffs_DestroyObject(yaffs_Object * obj); ++ ++static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId, ++ int chunkInObject); ++ ++loff_t yaffs_GetFileSize(yaffs_Object * obj); ++ ++static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr); ++ ++static void yaffs_VerifyFreeChunks(yaffs_Device * dev); ++ ++static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in); ++ ++#ifdef YAFFS_PARANOID ++static int yaffs_CheckFileSanity(yaffs_Object * in); ++#else ++#define yaffs_CheckFileSanity(in) ++#endif ++ ++static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in); ++static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId); ++ ++static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); ++ ++static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode, ++ yaffs_ExtendedTags * tags); ++ ++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos); ++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev, ++ yaffs_FileStructure * fStruct, ++ __u32 chunkId); ++ ++ ++/* Function to calculate chunk and offset */ ++ ++static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset) ++{ ++ if(dev->chunkShift){ ++ /* Easy-peasy power of 2 case */ ++ *chunk = (__u32)(addr >> dev->chunkShift); ++ *offset = (__u32)(addr & dev->chunkMask); ++ } ++ else if(dev->crumbsPerChunk) ++ { ++ /* Case where we're using "crumbs" */ ++ *offset = (__u32)(addr & dev->crumbMask); ++ addr >>= dev->crumbShift; ++ *chunk = ((__u32)addr)/dev->crumbsPerChunk; ++ *offset += ((addr - (*chunk * dev->crumbsPerChunk)) << dev->crumbShift); ++ } ++ else ++ YBUG(); ++} ++ ++/* Function to return the number of shifts for a power of 2 greater than or equal ++ * to the given number ++ * Note we don't try to cater for all possible numbers and this does not have to ++ * be hellishly efficient. ++ */ ++ ++static __u32 ShiftsGE(__u32 x) ++{ ++ int extraBits; ++ int nShifts; ++ ++ nShifts = extraBits = 0; ++ ++ while(x>1){ ++ if(x & 1) extraBits++; ++ x>>=1; ++ nShifts++; ++ } ++ ++ if(extraBits) ++ nShifts++; ++ ++ return nShifts; ++} ++ ++/* Function to return the number of shifts to get a 1 in bit 0 ++ */ ++ ++static __u32 ShiftDiv(__u32 x) ++{ ++ int nShifts; ++ ++ nShifts = 0; ++ ++ if(!x) return 0; ++ ++ while( !(x&1)){ ++ x>>=1; ++ nShifts++; ++ } ++ ++ return nShifts; ++} ++ ++ ++ ++/* ++ * Temporary buffer manipulations. ++ */ ++ ++static int yaffs_InitialiseTempBuffers(yaffs_Device *dev) ++{ ++ int i; ++ __u8 *buf = (__u8 *)1; ++ ++ memset(dev->tempBuffer,0,sizeof(dev->tempBuffer)); ++ ++ for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { ++ dev->tempBuffer[i].line = 0; /* not in use */ ++ dev->tempBuffer[i].buffer = buf = ++ YMALLOC_DMA(dev->nDataBytesPerChunk); ++ } ++ ++ return buf ? YAFFS_OK : YAFFS_FAIL; ++ ++} ++ ++static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo) ++{ ++ int i, j; ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { ++ if (dev->tempBuffer[i].line == 0) { ++ dev->tempBuffer[i].line = lineNo; ++ if ((i + 1) > dev->maxTemp) { ++ dev->maxTemp = i + 1; ++ for (j = 0; j <= i; j++) ++ dev->tempBuffer[j].maxLine = ++ dev->tempBuffer[j].line; ++ } ++ ++ return dev->tempBuffer[i].buffer; ++ } ++ } ++ ++ T(YAFFS_TRACE_BUFFERS, ++ (TSTR("Out of temp buffers at line %d, other held by lines:"), ++ lineNo)); ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { ++ T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line)); ++ } ++ T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); ++ ++ /* ++ * If we got here then we have to allocate an unmanaged one ++ * This is not good. ++ */ ++ ++ dev->unmanagedTempAllocations++; ++ return YMALLOC(dev->nDataBytesPerChunk); ++ ++} ++ ++static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer, ++ int lineNo) ++{ ++ int i; ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { ++ if (dev->tempBuffer[i].buffer == buffer) { ++ dev->tempBuffer[i].line = 0; ++ return; ++ } ++ } ++ ++ if (buffer) { ++ /* assume it is an unmanaged one. */ ++ T(YAFFS_TRACE_BUFFERS, ++ (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), ++ lineNo)); ++ YFREE(buffer); ++ dev->unmanagedTempDeallocations++; ++ } ++ ++} ++ ++/* ++ * Determine if we have a managed buffer. ++ */ ++int yaffs_IsManagedTempBuffer(yaffs_Device * dev, const __u8 * buffer) ++{ ++ int i; ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { ++ if (dev->tempBuffer[i].buffer == buffer) ++ return 1; ++ ++ } ++ ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if( dev->srCache[i].data == buffer ) ++ return 1; ++ ++ } ++ ++ if (buffer == dev->checkpointBuffer) ++ return 1; ++ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR))); ++ return 0; ++} ++ ++ ++ ++/* ++ * Chunk bitmap manipulations ++ */ ++ ++static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device * dev, int blk) ++{ ++ if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), ++ blk)); ++ YBUG(); ++ } ++ return dev->chunkBits + ++ (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); ++} ++ ++static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) ++{ ++ if(blk < dev->internalStartBlock || blk > dev->internalEndBlock || ++ chunk < 0 || chunk >= dev->nChunksPerBlock) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),blk,chunk)); ++ YBUG(); ++ } ++} ++ ++static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ ++ memset(blkBits, 0, dev->chunkBitmapStride); ++} ++ ++static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device * dev, int blk, int chunk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ ++ yaffs_VerifyChunkBitId(dev,blk,chunk); ++ ++ blkBits[chunk / 8] &= ~(1 << (chunk & 7)); ++} ++ ++static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ ++ yaffs_VerifyChunkBitId(dev,blk,chunk); ++ ++ blkBits[chunk / 8] |= (1 << (chunk & 7)); ++} ++ ++static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ yaffs_VerifyChunkBitId(dev,blk,chunk); ++ ++ return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; ++} ++ ++static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ int i; ++ for (i = 0; i < dev->chunkBitmapStride; i++) { ++ if (*blkBits) ++ return 1; ++ blkBits++; ++ } ++ return 0; ++} ++ ++static int yaffs_CountChunkBits(yaffs_Device * dev, int blk) ++{ ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ int i; ++ int n = 0; ++ for (i = 0; i < dev->chunkBitmapStride; i++) { ++ __u8 x = *blkBits; ++ while(x){ ++ if(x & 1) ++ n++; ++ x >>=1; ++ } ++ ++ blkBits++; ++ } ++ return n; ++} ++ ++/* ++ * Verification code ++ */ ++ ++static int yaffs_SkipVerification(yaffs_Device *dev) ++{ ++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); ++} ++ ++static int yaffs_SkipFullVerification(yaffs_Device *dev) ++{ ++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); ++} ++ ++static int yaffs_SkipNANDVerification(yaffs_Device *dev) ++{ ++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); ++} ++ ++static const char * blockStateName[] = { ++"Unknown", ++"Needs scanning", ++"Scanning", ++"Empty", ++"Allocating", ++"Full", ++"Dirty", ++"Checkpoint", ++"Collecting", ++"Dead" ++}; ++ ++static void yaffs_VerifyBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n) ++{ ++ int actuallyUsed; ++ int inUse; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ /* Report illegal runtime states */ ++ if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState)); ++ ++ switch(bi->blockState){ ++ case YAFFS_BLOCK_STATE_UNKNOWN: ++ case YAFFS_BLOCK_STATE_SCANNING: ++ case YAFFS_BLOCK_STATE_NEEDS_SCANNING: ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR), ++ n,blockStateName[bi->blockState])); ++ } ++ ++ /* Check pages in use and soft deletions are legal */ ++ ++ actuallyUsed = bi->pagesInUse - bi->softDeletions; ++ ++ if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock || ++ bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock || ++ actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), ++ n,bi->pagesInUse,bi->softDeletions)); ++ ++ ++ /* Check chunk bitmap legal */ ++ inUse = yaffs_CountChunkBits(dev,n); ++ if(inUse != bi->pagesInUse) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), ++ n,bi->pagesInUse,inUse)); ++ ++ /* Check that the sequence number is valid. ++ * Ten million is legal, but is very unlikely ++ */ ++ if(dev->isYaffs2 && ++ (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) && ++ (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 )) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR), ++ n,bi->sequenceNumber)); ++ ++} ++ ++static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n) ++{ ++ yaffs_VerifyBlock(dev,bi,n); ++ ++ /* After collection the block should be in the erased state */ ++ /* TODO: This will need to change if we do partial gc */ ++ ++ if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){ ++ T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), ++ n,bi->blockState)); ++ } ++} ++ ++static void yaffs_VerifyBlocks(yaffs_Device *dev) ++{ ++ int i; ++ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; ++ int nIllegalBlockStates = 0; ++ ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ memset(nBlocksPerState,0,sizeof(nBlocksPerState)); ++ ++ ++ for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i); ++ yaffs_VerifyBlock(dev,bi,i); ++ ++ if(bi->blockState >=0 && bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) ++ nBlocksPerState[bi->blockState]++; ++ else ++ nIllegalBlockStates++; ++ ++ } ++ ++ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR))); ++ T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR))); ++ ++ T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates)); ++ if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) ++ T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR))); ++ ++ for(i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("%s %d blocks"TENDSTR), ++ blockStateName[i],nBlocksPerState[i])); ++ ++ if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), ++ dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); ++ ++ if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Erased block count wrong dev %d count %d"TENDSTR), ++ dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); ++ ++ if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), ++ nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); ++ ++ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR))); ++ ++} ++ ++/* ++ * Verify the object header. oh must be valid, but obj and tags may be NULL in which ++ * case those tests will not be performed. ++ */ ++static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) ++{ ++ if(yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ if(!(tags && obj && oh)){ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR), ++ (__u32)tags,(__u32)obj,(__u32)oh)); ++ return; ++ } ++ ++ if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || ++ oh->type > YAFFS_OBJECT_TYPE_MAX) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), ++ tags->objectId, oh->type)); ++ ++ if(tags->objectId != obj->objectId) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header mismatch objectId %d"TENDSTR), ++ tags->objectId, obj->objectId)); ++ ++ ++ /* ++ * Check that the object's parent ids match if parentCheck requested. ++ * ++ * Tests do not apply to the root object. ++ */ ++ ++ if(parentCheck && tags->objectId > 1 && !obj->parent) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), ++ tags->objectId, oh->parentObjectId)); ++ ++ ++ if(parentCheck && obj->parent && ++ oh->parentObjectId != obj->parent->objectId && ++ (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || ++ obj->parent->objectId != YAFFS_OBJECTID_DELETED)) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), ++ tags->objectId, oh->parentObjectId, obj->parent->objectId)); ++ ++ ++ if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header name is NULL"TENDSTR), ++ obj->objectId)); ++ ++ if(tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d header name is 0xFF"TENDSTR), ++ obj->objectId)); ++} ++ ++ ++ ++static int yaffs_VerifyTnodeWorker(yaffs_Object * obj, yaffs_Tnode * tn, ++ __u32 level, int chunkOffset) ++{ ++ int i; ++ yaffs_Device *dev = obj->myDev; ++ int ok = 1; ++ int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; ++ ++ if (tn) { ++ if (level > 0) { ++ ++ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){ ++ if (tn->internal[i]) { ++ ok = yaffs_VerifyTnodeWorker(obj, ++ tn->internal[i], ++ level - 1, ++ (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); ++ } ++ } ++ } else if (level == 0) { ++ int i; ++ yaffs_ExtendedTags tags; ++ __u32 objectId = obj->objectId; ++ ++ chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; ++ ++ for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){ ++ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i); ++ ++ if(theChunk > 0){ ++ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ ++ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags); ++ if(tags.objectId != objectId || tags.chunkId != chunkOffset){ ++ T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), ++ objectId, chunkOffset, theChunk, ++ tags.objectId, tags.chunkId)); ++ } ++ } ++ chunkOffset++; ++ } ++ } ++ } ++ ++ return ok; ++ ++} ++ ++ ++static void yaffs_VerifyFile(yaffs_Object *obj) ++{ ++ int requiredTallness; ++ int actualTallness; ++ __u32 lastChunk; ++ __u32 x; ++ __u32 i; ++ int ok; ++ yaffs_Device *dev; ++ yaffs_ExtendedTags tags; ++ yaffs_Tnode *tn; ++ __u32 objectId; ++ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ dev = obj->myDev; ++ objectId = obj->objectId; ++ ++ /* Check file size is consistent with tnode depth */ ++ lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; ++ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; ++ requiredTallness = 0; ++ while (x> 0) { ++ x >>= YAFFS_TNODES_INTERNAL_BITS; ++ requiredTallness++; ++ } ++ ++ actualTallness = obj->variant.fileVariant.topLevel; ++ ++ if(requiredTallness > actualTallness ) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR), ++ obj->objectId,actualTallness, requiredTallness)); ++ ++ ++ /* Check that the chunks in the tnode tree are all correct. ++ * We do this by scanning through the tnode tree and ++ * checking the tags for every chunk match. ++ */ ++ ++ if(yaffs_SkipNANDVerification(dev)) ++ return; ++ ++ for(i = 1; i <= lastChunk; i++){ ++ tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i); ++ ++ if (tn) { ++ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i); ++ if(theChunk > 0){ ++ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ ++ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags); ++ if(tags.objectId != objectId || tags.chunkId != i){ ++ T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), ++ objectId, i, theChunk, ++ tags.objectId, tags.chunkId)); ++ } ++ } ++ } ++ ++ } ++ ++} ++ ++static void yaffs_VerifyDirectory(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++} ++ ++static void yaffs_VerifyHardLink(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ /* Verify sane equivalent object */ ++} ++ ++static void yaffs_VerifySymlink(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++ ++ /* Verify symlink string */ ++} ++ ++static void yaffs_VerifySpecial(yaffs_Object *obj) ++{ ++ if(obj && yaffs_SkipVerification(obj->myDev)) ++ return; ++} ++ ++static void yaffs_VerifyObject(yaffs_Object *obj) ++{ ++ yaffs_Device *dev; ++ ++ __u32 chunkMin; ++ __u32 chunkMax; ++ ++ __u32 chunkIdOk; ++ __u32 chunkIsLive; ++ ++ if(!obj) ++ return; ++ ++ dev = obj->myDev; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ /* Check sane object header chunk */ ++ ++ chunkMin = dev->internalStartBlock * dev->nChunksPerBlock; ++ chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1; ++ ++ chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax); ++ chunkIsLive = chunkIdOk && ++ yaffs_CheckChunkBit(dev, ++ obj->chunkId / dev->nChunksPerBlock, ++ obj->chunkId % dev->nChunksPerBlock); ++ if(!obj->fake && ++ (!chunkIdOk || !chunkIsLive)) { ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), ++ obj->objectId,obj->chunkId, ++ chunkIdOk ? "" : ",out of range", ++ chunkIsLive || !chunkIdOk ? "" : ",marked as deleted")); ++ } ++ ++ if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) { ++ yaffs_ExtendedTags tags; ++ yaffs_ObjectHeader *oh; ++ __u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__); ++ ++ oh = (yaffs_ObjectHeader *)buffer; ++ ++ yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags); ++ ++ yaffs_VerifyObjectHeader(obj,oh,&tags,1); ++ ++ yaffs_ReleaseTempBuffer(dev,buffer,__LINE__); ++ } ++ ++ /* Verify it has a parent */ ++ if(obj && !obj->fake && ++ (!obj->parent || obj->parent->myDev != dev)){ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), ++ obj->objectId,obj->parent)); ++ } ++ ++ /* Verify parent is a directory */ ++ if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){ ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), ++ obj->objectId,obj->parent->variantType)); ++ } ++ ++ switch(obj->variantType){ ++ case YAFFS_OBJECT_TYPE_FILE: ++ yaffs_VerifyFile(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ yaffs_VerifySymlink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ yaffs_VerifyDirectory(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ yaffs_VerifyHardLink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ yaffs_VerifySpecial(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ default: ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Obj %d has illegaltype %d"TENDSTR), ++ obj->objectId,obj->variantType)); ++ break; ++ } ++ ++ ++} ++ ++static void yaffs_VerifyObjects(yaffs_Device *dev) ++{ ++ yaffs_Object *obj; ++ int i; ++ struct list_head *lh; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ /* Iterate through the objects in each hash entry */ ++ ++ for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){ ++ list_for_each(lh, &dev->objectBucket[i].list) { ++ if (lh) { ++ obj = list_entry(lh, yaffs_Object, hashLink); ++ yaffs_VerifyObject(obj); ++ } ++ } ++ } ++ ++} ++ ++ ++/* ++ * Simple hash function. Needs to have a reasonable spread ++ */ ++ ++static Y_INLINE int yaffs_HashFunction(int n) ++{ ++ n = abs(n); ++ return (n % YAFFS_NOBJECT_BUCKETS); ++} ++ ++/* ++ * Access functions to useful fake objects ++ */ ++ ++yaffs_Object *yaffs_Root(yaffs_Device * dev) ++{ ++ return dev->rootDir; ++} ++ ++yaffs_Object *yaffs_LostNFound(yaffs_Device * dev) ++{ ++ return dev->lostNFoundDir; ++} ++ ++ ++/* ++ * Erased NAND checking functions ++ */ ++ ++int yaffs_CheckFF(__u8 * buffer, int nBytes) ++{ ++ /* Horrible, slow implementation */ ++ while (nBytes--) { ++ if (*buffer != 0xFF) ++ return 0; ++ buffer++; ++ } ++ return 1; ++} ++ ++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND) ++{ ++ ++ int retval = YAFFS_OK; ++ __u8 *data = yaffs_GetTempBuffer(dev, __LINE__); ++ yaffs_ExtendedTags tags; ++ int result; ++ ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags); ++ ++ if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR) ++ retval = YAFFS_FAIL; ++ ++ ++ if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) { ++ T(YAFFS_TRACE_NANDACCESS, ++ (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND)); ++ retval = YAFFS_FAIL; ++ } ++ ++ yaffs_ReleaseTempBuffer(dev, data, __LINE__); ++ ++ return retval; ++ ++} ++ ++ ++static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, ++ const __u8 * data, ++ yaffs_ExtendedTags * tags, ++ int useReserve) ++{ ++ int attempts = 0; ++ int writeOk = 0; ++ int chunk; ++ ++ yaffs_InvalidateCheckpoint(dev); ++ ++ do { ++ yaffs_BlockInfo *bi = 0; ++ int erasedOk = 0; ++ ++ chunk = yaffs_AllocateChunk(dev, useReserve, &bi); ++ if (chunk < 0) { ++ /* no space */ ++ break; ++ } ++ ++ /* First check this chunk is erased, if it needs ++ * checking. The checking policy (unless forced ++ * always on) is as follows: ++ * ++ * Check the first page we try to write in a block. ++ * If the check passes then we don't need to check any ++ * more. If the check fails, we check again... ++ * If the block has been erased, we don't need to check. ++ * ++ * However, if the block has been prioritised for gc, ++ * then we think there might be something odd about ++ * this block and stop using it. ++ * ++ * Rationale: We should only ever see chunks that have ++ * not been erased if there was a partially written ++ * chunk due to power loss. This checking policy should ++ * catch that case with very few checks and thus save a ++ * lot of checks that are most likely not needed. ++ */ ++ if (bi->gcPrioritise) { ++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__); ++ /* try another chunk */ ++ continue; ++ } ++ ++ /* let's give it a try */ ++ attempts++; ++ ++#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ bi->skipErasedCheck = 0; ++#endif ++ if (!bi->skipErasedCheck) { ++ erasedOk = yaffs_CheckChunkErased(dev, chunk); ++ if (erasedOk != YAFFS_OK) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ("**>> yaffs chunk %d was not erased" ++ TENDSTR), chunk)); ++ ++ /* try another chunk */ ++ continue; ++ } ++ bi->skipErasedCheck = 1; ++ } ++ ++ writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk, ++ data, tags); ++ if (writeOk != YAFFS_OK) { ++ yaffs_HandleWriteChunkError(dev, chunk, erasedOk); ++ /* try another chunk */ ++ continue; ++ } ++ ++ /* Copy the data into the robustification buffer */ ++ yaffs_HandleWriteChunkOk(dev, chunk, data, tags); ++ ++ } while (writeOk != YAFFS_OK && attempts < yaffs_wr_attempts); ++ ++ if (attempts > 1) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> yaffs write required %d attempts" TENDSTR), ++ attempts)); ++ ++ dev->nRetriedWrites += (attempts - 1); ++ } ++ ++ return chunk; ++} ++ ++/* ++ * Block retiring for handling a broken block. ++ */ ++ ++static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND) ++{ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); ++ ++ yaffs_InvalidateCheckpoint(dev); ++ ++ yaffs_MarkBlockBad(dev, blockInNAND); ++ ++ bi->blockState = YAFFS_BLOCK_STATE_DEAD; ++ bi->gcPrioritise = 0; ++ bi->needsRetiring = 0; ++ ++ dev->nRetiredBlocks++; ++} ++ ++/* ++ * Functions for robustisizing TODO ++ * ++ */ ++ ++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * tags) ++{ ++} ++ ++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, ++ const yaffs_ExtendedTags * tags) ++{ ++} ++ ++void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi) ++{ ++ if(!bi->gcPrioritise){ ++ bi->gcPrioritise = 1; ++ dev->hasPendingPrioritisedGCs = 1; ++ bi->chunkErrorStrikes ++; ++ ++ if(bi->chunkErrorStrikes > 3){ ++ bi->needsRetiring = 1; /* Too many stikes, so retire this */ ++ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); ++ ++ } ++ ++ } ++} ++ ++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk) ++{ ++ ++ int blockInNAND = chunkInNAND / dev->nChunksPerBlock; ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND); ++ ++ yaffs_HandleChunkError(dev,bi); ++ ++ ++ if(erasedOk ) { ++ /* Was an actual write failure, so mark the block for retirement */ ++ bi->needsRetiring = 1; ++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND)); ++ ++ ++ } ++ ++ /* Delete the chunk */ ++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); ++} ++ ++ ++/*---------------- Name handling functions ------------*/ ++ ++static __u16 yaffs_CalcNameSum(const YCHAR * name) ++{ ++ __u16 sum = 0; ++ __u16 i = 1; ++ ++ YUCHAR *bname = (YUCHAR *) name; ++ if (bname) { ++ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { ++ ++#ifdef CONFIG_YAFFS_CASE_INSENSITIVE ++ sum += yaffs_toupper(*bname) * i; ++#else ++ sum += (*bname) * i; ++#endif ++ i++; ++ bname++; ++ } ++ } ++ return sum; ++} ++ ++static void yaffs_SetObjectName(yaffs_Object * obj, const YCHAR * name) ++{ ++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM ++ if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) { ++ yaffs_strcpy(obj->shortName, name); ++ } else { ++ obj->shortName[0] = _Y('\0'); ++ } ++#endif ++ obj->sum = yaffs_CalcNameSum(name); ++} ++ ++/*-------------------- TNODES ------------------- ++ ++ * List of spare tnodes ++ * The list is hooked together using the first pointer ++ * in the tnode. ++ */ ++ ++/* yaffs_CreateTnodes creates a bunch more tnodes and ++ * adds them to the tnode free list. ++ * Don't use this function directly ++ */ ++ ++static int yaffs_CreateTnodes(yaffs_Device * dev, int nTnodes) ++{ ++ int i; ++ int tnodeSize; ++ yaffs_Tnode *newTnodes; ++ __u8 *mem; ++ yaffs_Tnode *curr; ++ yaffs_Tnode *next; ++ yaffs_TnodeList *tnl; ++ ++ if (nTnodes < 1) ++ return YAFFS_OK; ++ ++ /* Calculate the tnode size in bytes for variable width tnode support. ++ * Must be a multiple of 32-bits */ ++ tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; ++ ++ /* make these things */ ++ ++ newTnodes = YMALLOC(nTnodes * tnodeSize); ++ mem = (__u8 *)newTnodes; ++ ++ if (!newTnodes) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ /* Hook them into the free list */ ++#if 0 ++ for (i = 0; i < nTnodes - 1; i++) { ++ newTnodes[i].internal[0] = &newTnodes[i + 1]; ++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG ++ newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; ++#endif ++ } ++ ++ newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes; ++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG ++ newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; ++#endif ++ dev->freeTnodes = newTnodes; ++#else ++ /* New hookup for wide tnodes */ ++ for(i = 0; i < nTnodes -1; i++) { ++ curr = (yaffs_Tnode *) &mem[i * tnodeSize]; ++ next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize]; ++ curr->internal[0] = next; ++ } ++ ++ curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize]; ++ curr->internal[0] = dev->freeTnodes; ++ dev->freeTnodes = (yaffs_Tnode *)mem; ++ ++#endif ++ ++ ++ dev->nFreeTnodes += nTnodes; ++ dev->nTnodesCreated += nTnodes; ++ ++ /* Now add this bunch of tnodes to a list for freeing up. ++ * NB If we can't add this to the management list it isn't fatal ++ * but it just means we can't free this bunch of tnodes later. ++ */ ++ ++ tnl = YMALLOC(sizeof(yaffs_TnodeList)); ++ if (!tnl) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs: Could not add tnodes to management list" TENDSTR))); ++ return YAFFS_FAIL; ++ ++ } else { ++ tnl->tnodes = newTnodes; ++ tnl->next = dev->allocatedTnodeList; ++ dev->allocatedTnodeList = tnl; ++ } ++ ++ T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); ++ ++ return YAFFS_OK; ++} ++ ++/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */ ++ ++static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device * dev) ++{ ++ yaffs_Tnode *tn = NULL; ++ ++ /* If there are none left make more */ ++ if (!dev->freeTnodes) { ++ yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); ++ } ++ ++ if (dev->freeTnodes) { ++ tn = dev->freeTnodes; ++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG ++ if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) { ++ /* Hoosterman, this thing looks like it isn't in the list */ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: Tnode list bug 1" TENDSTR))); ++ } ++#endif ++ dev->freeTnodes = dev->freeTnodes->internal[0]; ++ dev->nFreeTnodes--; ++ } ++ ++ return tn; ++} ++ ++static yaffs_Tnode *yaffs_GetTnode(yaffs_Device * dev) ++{ ++ yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev); ++ ++ if(tn) ++ memset(tn, 0, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); ++ ++ return tn; ++} ++ ++/* FreeTnode frees up a tnode and puts it back on the free list */ ++static void yaffs_FreeTnode(yaffs_Device * dev, yaffs_Tnode * tn) ++{ ++ if (tn) { ++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG ++ if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) { ++ /* Hoosterman, this thing looks like it is already in the list */ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: Tnode list bug 2" TENDSTR))); ++ } ++ tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1; ++#endif ++ tn->internal[0] = dev->freeTnodes; ++ dev->freeTnodes = tn; ++ dev->nFreeTnodes++; ++ } ++} ++ ++static void yaffs_DeinitialiseTnodes(yaffs_Device * dev) ++{ ++ /* Free the list of allocated tnodes */ ++ yaffs_TnodeList *tmp; ++ ++ while (dev->allocatedTnodeList) { ++ tmp = dev->allocatedTnodeList->next; ++ ++ YFREE(dev->allocatedTnodeList->tnodes); ++ YFREE(dev->allocatedTnodeList); ++ dev->allocatedTnodeList = tmp; ++ ++ } ++ ++ dev->freeTnodes = NULL; ++ dev->nFreeTnodes = 0; ++} ++ ++static void yaffs_InitialiseTnodes(yaffs_Device * dev) ++{ ++ dev->allocatedTnodeList = NULL; ++ dev->freeTnodes = NULL; ++ dev->nFreeTnodes = 0; ++ dev->nTnodesCreated = 0; ++ ++} ++ ++ ++void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, unsigned val) ++{ ++ __u32 *map = (__u32 *)tn; ++ __u32 bitInMap; ++ __u32 bitInWord; ++ __u32 wordInMap; ++ __u32 mask; ++ ++ pos &= YAFFS_TNODES_LEVEL0_MASK; ++ val >>= dev->chunkGroupBits; ++ ++ bitInMap = pos * dev->tnodeWidth; ++ wordInMap = bitInMap /32; ++ bitInWord = bitInMap & (32 -1); ++ ++ mask = dev->tnodeMask << bitInWord; ++ ++ map[wordInMap] &= ~mask; ++ map[wordInMap] |= (mask & (val << bitInWord)); ++ ++ if(dev->tnodeWidth > (32-bitInWord)) { ++ bitInWord = (32 - bitInWord); ++ wordInMap++;; ++ mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord); ++ map[wordInMap] &= ~mask; ++ map[wordInMap] |= (mask & (val >> bitInWord)); ++ } ++} ++ ++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos) ++{ ++ __u32 *map = (__u32 *)tn; ++ __u32 bitInMap; ++ __u32 bitInWord; ++ __u32 wordInMap; ++ __u32 val; ++ ++ pos &= YAFFS_TNODES_LEVEL0_MASK; ++ ++ bitInMap = pos * dev->tnodeWidth; ++ wordInMap = bitInMap /32; ++ bitInWord = bitInMap & (32 -1); ++ ++ val = map[wordInMap] >> bitInWord; ++ ++ if(dev->tnodeWidth > (32-bitInWord)) { ++ bitInWord = (32 - bitInWord); ++ wordInMap++;; ++ val |= (map[wordInMap] << bitInWord); ++ } ++ ++ val &= dev->tnodeMask; ++ val <<= dev->chunkGroupBits; ++ ++ return val; ++} ++ ++/* ------------------- End of individual tnode manipulation -----------------*/ ++ ++/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------ ++ * The look up tree is represented by the top tnode and the number of topLevel ++ * in the tree. 0 means only the level 0 tnode is in the tree. ++ */ ++ ++/* FindLevel0Tnode finds the level 0 tnode, if one exists. */ ++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev, ++ yaffs_FileStructure * fStruct, ++ __u32 chunkId) ++{ ++ ++ yaffs_Tnode *tn = fStruct->top; ++ __u32 i; ++ int requiredTallness; ++ int level = fStruct->topLevel; ++ ++ /* Check sane level and chunk Id */ ++ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) { ++ return NULL; ++ } ++ ++ if (chunkId > YAFFS_MAX_CHUNK_ID) { ++ return NULL; ++ } ++ ++ /* First check we're tall enough (ie enough topLevel) */ ++ ++ i = chunkId >> YAFFS_TNODES_LEVEL0_BITS; ++ requiredTallness = 0; ++ while (i) { ++ i >>= YAFFS_TNODES_INTERNAL_BITS; ++ requiredTallness++; ++ } ++ ++ if (requiredTallness > fStruct->topLevel) { ++ /* Not tall enough, so we can't find it, return NULL. */ ++ return NULL; ++ } ++ ++ /* Traverse down to level 0 */ ++ while (level > 0 && tn) { ++ tn = tn-> ++ internal[(chunkId >> ++ ( YAFFS_TNODES_LEVEL0_BITS + ++ (level - 1) * ++ YAFFS_TNODES_INTERNAL_BITS) ++ ) & ++ YAFFS_TNODES_INTERNAL_MASK]; ++ level--; ++ ++ } ++ ++ return tn; ++} ++ ++/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree. ++ * This happens in two steps: ++ * 1. If the tree isn't tall enough, then make it taller. ++ * 2. Scan down the tree towards the level 0 tnode adding tnodes if required. ++ * ++ * Used when modifying the tree. ++ * ++ * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will ++ * be plugged into the ttree. ++ */ ++ ++static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev, ++ yaffs_FileStructure * fStruct, ++ __u32 chunkId, ++ yaffs_Tnode *passedTn) ++{ ++ ++ int requiredTallness; ++ int i; ++ int l; ++ yaffs_Tnode *tn; ++ ++ __u32 x; ++ ++ ++ /* Check sane level and page Id */ ++ if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) { ++ return NULL; ++ } ++ ++ if (chunkId > YAFFS_MAX_CHUNK_ID) { ++ return NULL; ++ } ++ ++ /* First check we're tall enough (ie enough topLevel) */ ++ ++ x = chunkId >> YAFFS_TNODES_LEVEL0_BITS; ++ requiredTallness = 0; ++ while (x) { ++ x >>= YAFFS_TNODES_INTERNAL_BITS; ++ requiredTallness++; ++ } ++ ++ ++ if (requiredTallness > fStruct->topLevel) { ++ /* Not tall enough,gotta make the tree taller */ ++ for (i = fStruct->topLevel; i < requiredTallness; i++) { ++ ++ tn = yaffs_GetTnode(dev); ++ ++ if (tn) { ++ tn->internal[0] = fStruct->top; ++ fStruct->top = tn; ++ } else { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("yaffs: no more tnodes" TENDSTR))); ++ } ++ } ++ ++ fStruct->topLevel = requiredTallness; ++ } ++ ++ /* Traverse down to level 0, adding anything we need */ ++ ++ l = fStruct->topLevel; ++ tn = fStruct->top; ++ ++ if(l > 0) { ++ while (l > 0 && tn) { ++ x = (chunkId >> ++ ( YAFFS_TNODES_LEVEL0_BITS + ++ (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & ++ YAFFS_TNODES_INTERNAL_MASK; ++ ++ ++ if((l>1) && !tn->internal[x]){ ++ /* Add missing non-level-zero tnode */ ++ tn->internal[x] = yaffs_GetTnode(dev); ++ ++ } else if(l == 1) { ++ /* Looking from level 1 at level 0 */ ++ if (passedTn) { ++ /* If we already have one, then release it.*/ ++ if(tn->internal[x]) ++ yaffs_FreeTnode(dev,tn->internal[x]); ++ tn->internal[x] = passedTn; ++ ++ } else if(!tn->internal[x]) { ++ /* Don't have one, none passed in */ ++ tn->internal[x] = yaffs_GetTnode(dev); ++ } ++ } ++ ++ tn = tn->internal[x]; ++ l--; ++ } ++ } else { ++ /* top is level 0 */ ++ if(passedTn) { ++ memcpy(tn,passedTn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); ++ yaffs_FreeTnode(dev,passedTn); ++ } ++ } ++ ++ return tn; ++} ++ ++static int yaffs_FindChunkInGroup(yaffs_Device * dev, int theChunk, ++ yaffs_ExtendedTags * tags, int objectId, ++ int chunkInInode) ++{ ++ int j; ++ ++ for (j = 0; theChunk && j < dev->chunkGroupSize; j++) { ++ if (yaffs_CheckChunkBit ++ (dev, theChunk / dev->nChunksPerBlock, ++ theChunk % dev->nChunksPerBlock)) { ++ yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, ++ tags); ++ if (yaffs_TagsMatch(tags, objectId, chunkInInode)) { ++ /* found it; */ ++ return theChunk; ++ ++ } ++ } ++ theChunk++; ++ } ++ return -1; ++} ++ ++ ++/* DeleteWorker scans backwards through the tnode tree and deletes all the ++ * chunks and tnodes in the file ++ * Returns 1 if the tree was deleted. ++ * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. ++ */ ++ ++static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level, ++ int chunkOffset, int *limit) ++{ ++ int i; ++ int chunkInInode; ++ int theChunk; ++ yaffs_ExtendedTags tags; ++ int foundChunk; ++ yaffs_Device *dev = in->myDev; ++ ++ int allDone = 1; ++ ++ if (tn) { ++ if (level > 0) { ++ ++ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; ++ i--) { ++ if (tn->internal[i]) { ++ if (limit && (*limit) < 0) { ++ allDone = 0; ++ } else { ++ allDone = ++ yaffs_DeleteWorker(in, ++ tn-> ++ internal ++ [i], ++ level - ++ 1, ++ (chunkOffset ++ << ++ YAFFS_TNODES_INTERNAL_BITS) ++ + i, ++ limit); ++ } ++ if (allDone) { ++ yaffs_FreeTnode(dev, ++ tn-> ++ internal[i]); ++ tn->internal[i] = NULL; ++ } ++ } ++ ++ } ++ return (allDone) ? 1 : 0; ++ } else if (level == 0) { ++ int hitLimit = 0; ++ ++ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit; ++ i--) { ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,i); ++ if (theChunk) { ++ ++ chunkInInode = ++ (chunkOffset << ++ YAFFS_TNODES_LEVEL0_BITS) + i; ++ ++ foundChunk = ++ yaffs_FindChunkInGroup(dev, ++ theChunk, ++ &tags, ++ in->objectId, ++ chunkInInode); ++ ++ if (foundChunk > 0) { ++ yaffs_DeleteChunk(dev, ++ foundChunk, 1, ++ __LINE__); ++ in->nDataChunks--; ++ if (limit) { ++ *limit = *limit - 1; ++ if (*limit <= 0) { ++ hitLimit = 1; ++ } ++ } ++ ++ } ++ ++ yaffs_PutLevel0Tnode(dev,tn,i,0); ++ } ++ ++ } ++ return (i < 0) ? 1 : 0; ++ ++ } ++ ++ } ++ ++ return 1; ++ ++} ++ ++static void yaffs_SoftDeleteChunk(yaffs_Device * dev, int chunk) ++{ ++ ++ yaffs_BlockInfo *theBlock; ++ ++ T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); ++ ++ theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock); ++ if (theBlock) { ++ theBlock->softDeletions++; ++ dev->nFreeChunks++; ++ } ++} ++ ++/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. ++ * All soft deleting does is increment the block's softdelete count and pulls the chunk out ++ * of the tnode. ++ * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. ++ */ ++ ++static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, ++ __u32 level, int chunkOffset) ++{ ++ int i; ++ int theChunk; ++ int allDone = 1; ++ yaffs_Device *dev = in->myDev; ++ ++ if (tn) { ++ if (level > 0) { ++ ++ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0; ++ i--) { ++ if (tn->internal[i]) { ++ allDone = ++ yaffs_SoftDeleteWorker(in, ++ tn-> ++ internal[i], ++ level - 1, ++ (chunkOffset ++ << ++ YAFFS_TNODES_INTERNAL_BITS) ++ + i); ++ if (allDone) { ++ yaffs_FreeTnode(dev, ++ tn-> ++ internal[i]); ++ tn->internal[i] = NULL; ++ } else { ++ /* Hoosterman... how could this happen? */ ++ } ++ } ++ } ++ return (allDone) ? 1 : 0; ++ } else if (level == 0) { ++ ++ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,i); ++ if (theChunk) { ++ /* Note this does not find the real chunk, only the chunk group. ++ * We make an assumption that a chunk group is not larger than ++ * a block. ++ */ ++ yaffs_SoftDeleteChunk(dev, theChunk); ++ yaffs_PutLevel0Tnode(dev,tn,i,0); ++ } ++ ++ } ++ return 1; ++ ++ } ++ ++ } ++ ++ return 1; ++ ++} ++ ++static void yaffs_SoftDeleteFile(yaffs_Object * obj) ++{ ++ if (obj->deleted && ++ obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) { ++ if (obj->nDataChunks <= 0) { ++ /* Empty file with no duplicate object headers, just delete it immediately */ ++ yaffs_FreeTnode(obj->myDev, ++ obj->variant.fileVariant.top); ++ obj->variant.fileVariant.top = NULL; ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("yaffs: Deleting empty file %d" TENDSTR), ++ obj->objectId)); ++ yaffs_DoGenericObjectDeletion(obj); ++ } else { ++ yaffs_SoftDeleteWorker(obj, ++ obj->variant.fileVariant.top, ++ obj->variant.fileVariant. ++ topLevel, 0); ++ obj->softDeleted = 1; ++ } ++ } ++} ++ ++/* Pruning removes any part of the file structure tree that is beyond the ++ * bounds of the file (ie that does not point to chunks). ++ * ++ * A file should only get pruned when its size is reduced. ++ * ++ * Before pruning, the chunks must be pulled from the tree and the ++ * level 0 tnode entries must be zeroed out. ++ * Could also use this for file deletion, but that's probably better handled ++ * by a special case. ++ */ ++ ++static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device * dev, yaffs_Tnode * tn, ++ __u32 level, int del0) ++{ ++ int i; ++ int hasData; ++ ++ if (tn) { ++ hasData = 0; ++ ++ for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { ++ if (tn->internal[i] && level > 0) { ++ tn->internal[i] = ++ yaffs_PruneWorker(dev, tn->internal[i], ++ level - 1, ++ (i == 0) ? del0 : 1); ++ } ++ ++ if (tn->internal[i]) { ++ hasData++; ++ } ++ } ++ ++ if (hasData == 0 && del0) { ++ /* Free and return NULL */ ++ ++ yaffs_FreeTnode(dev, tn); ++ tn = NULL; ++ } ++ ++ } ++ ++ return tn; ++ ++} ++ ++static int yaffs_PruneFileStructure(yaffs_Device * dev, ++ yaffs_FileStructure * fStruct) ++{ ++ int i; ++ int hasData; ++ int done = 0; ++ yaffs_Tnode *tn; ++ ++ if (fStruct->topLevel > 0) { ++ fStruct->top = ++ yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0); ++ ++ /* Now we have a tree with all the non-zero branches NULL but the height ++ * is the same as it was. ++ * Let's see if we can trim internal tnodes to shorten the tree. ++ * We can do this if only the 0th element in the tnode is in use ++ * (ie all the non-zero are NULL) ++ */ ++ ++ while (fStruct->topLevel && !done) { ++ tn = fStruct->top; ++ ++ hasData = 0; ++ for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { ++ if (tn->internal[i]) { ++ hasData++; ++ } ++ } ++ ++ if (!hasData) { ++ fStruct->top = tn->internal[0]; ++ fStruct->topLevel--; ++ yaffs_FreeTnode(dev, tn); ++ } else { ++ done = 1; ++ } ++ } ++ } ++ ++ return YAFFS_OK; ++} ++ ++/*-------------------- End of File Structure functions.-------------------*/ ++ ++/* yaffs_CreateFreeObjects creates a bunch more objects and ++ * adds them to the object free list. ++ */ ++static int yaffs_CreateFreeObjects(yaffs_Device * dev, int nObjects) ++{ ++ int i; ++ yaffs_Object *newObjects; ++ yaffs_ObjectList *list; ++ ++ if (nObjects < 1) ++ return YAFFS_OK; ++ ++ /* make these things */ ++ newObjects = YMALLOC(nObjects * sizeof(yaffs_Object)); ++ list = YMALLOC(sizeof(yaffs_ObjectList)); ++ ++ if (!newObjects || !list) { ++ if(newObjects) ++ YFREE(newObjects); ++ if(list) ++ YFREE(list); ++ T(YAFFS_TRACE_ALLOCATE, ++ (TSTR("yaffs: Could not allocate more objects" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ /* Hook them into the free list */ ++ for (i = 0; i < nObjects - 1; i++) { ++ newObjects[i].siblings.next = ++ (struct list_head *)(&newObjects[i + 1]); ++ } ++ ++ newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects; ++ dev->freeObjects = newObjects; ++ dev->nFreeObjects += nObjects; ++ dev->nObjectsCreated += nObjects; ++ ++ /* Now add this bunch of Objects to a list for freeing up. */ ++ ++ list->objects = newObjects; ++ list->next = dev->allocatedObjectList; ++ dev->allocatedObjectList = list; ++ ++ return YAFFS_OK; ++} ++ ++ ++/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ ++static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device * dev) ++{ ++ yaffs_Object *tn = NULL; ++ ++ /* If there are none left make more */ ++ if (!dev->freeObjects) { ++ yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); ++ } ++ ++ if (dev->freeObjects) { ++ tn = dev->freeObjects; ++ dev->freeObjects = ++ (yaffs_Object *) (dev->freeObjects->siblings.next); ++ dev->nFreeObjects--; ++ ++ /* Now sweeten it up... */ ++ ++ memset(tn, 0, sizeof(yaffs_Object)); ++ tn->myDev = dev; ++ tn->chunkId = -1; ++ tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN; ++ INIT_LIST_HEAD(&(tn->hardLinks)); ++ INIT_LIST_HEAD(&(tn->hashLink)); ++ INIT_LIST_HEAD(&tn->siblings); ++ ++ /* Add it to the lost and found directory. ++ * NB Can't put root or lostNFound in lostNFound so ++ * check if lostNFound exists first ++ */ ++ if (dev->lostNFoundDir) { ++ yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn); ++ } ++ } ++ ++ return tn; ++} ++ ++static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device * dev, int number, ++ __u32 mode) ++{ ++ ++ yaffs_Object *obj = ++ yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); ++ if (obj) { ++ obj->fake = 1; /* it is fake so it has no NAND presence... */ ++ obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */ ++ obj->unlinkAllowed = 0; /* ... or unlink it */ ++ obj->deleted = 0; ++ obj->unlinked = 0; ++ obj->yst_mode = mode; ++ obj->myDev = dev; ++ obj->chunkId = 0; /* Not a valid chunk. */ ++ } ++ ++ return obj; ++ ++} ++ ++static void yaffs_UnhashObject(yaffs_Object * tn) ++{ ++ int bucket; ++ yaffs_Device *dev = tn->myDev; ++ ++ /* If it is still linked into the bucket list, free from the list */ ++ if (!list_empty(&tn->hashLink)) { ++ list_del_init(&tn->hashLink); ++ bucket = yaffs_HashFunction(tn->objectId); ++ dev->objectBucket[bucket].count--; ++ } ++ ++} ++ ++/* FreeObject frees up a Object and puts it back on the free list */ ++static void yaffs_FreeObject(yaffs_Object * tn) ++{ ++ ++ yaffs_Device *dev = tn->myDev; ++ ++#ifdef __KERNEL__ ++ if (tn->myInode) { ++ /* We're still hooked up to a cached inode. ++ * Don't delete now, but mark for later deletion ++ */ ++ tn->deferedFree = 1; ++ return; ++ } ++#endif ++ ++ yaffs_UnhashObject(tn); ++ ++ /* Link into the free list. */ ++ tn->siblings.next = (struct list_head *)(dev->freeObjects); ++ dev->freeObjects = tn; ++ dev->nFreeObjects++; ++} ++ ++#ifdef __KERNEL__ ++ ++void yaffs_HandleDeferedFree(yaffs_Object * obj) ++{ ++ if (obj->deferedFree) { ++ yaffs_FreeObject(obj); ++ } ++} ++ ++#endif ++ ++static void yaffs_DeinitialiseObjects(yaffs_Device * dev) ++{ ++ /* Free the list of allocated Objects */ ++ ++ yaffs_ObjectList *tmp; ++ ++ while (dev->allocatedObjectList) { ++ tmp = dev->allocatedObjectList->next; ++ YFREE(dev->allocatedObjectList->objects); ++ YFREE(dev->allocatedObjectList); ++ ++ dev->allocatedObjectList = tmp; ++ } ++ ++ dev->freeObjects = NULL; ++ dev->nFreeObjects = 0; ++} ++ ++static void yaffs_InitialiseObjects(yaffs_Device * dev) ++{ ++ int i; ++ ++ dev->allocatedObjectList = NULL; ++ dev->freeObjects = NULL; ++ dev->nFreeObjects = 0; ++ ++ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { ++ INIT_LIST_HEAD(&dev->objectBucket[i].list); ++ dev->objectBucket[i].count = 0; ++ } ++ ++} ++ ++static int yaffs_FindNiceObjectBucket(yaffs_Device * dev) ++{ ++ static int x = 0; ++ int i; ++ int l = 999; ++ int lowest = 999999; ++ ++ /* First let's see if we can find one that's empty. */ ++ ++ for (i = 0; i < 10 && lowest > 0; i++) { ++ x++; ++ x %= YAFFS_NOBJECT_BUCKETS; ++ if (dev->objectBucket[x].count < lowest) { ++ lowest = dev->objectBucket[x].count; ++ l = x; ++ } ++ ++ } ++ ++ /* If we didn't find an empty list, then try ++ * looking a bit further for a short one ++ */ ++ ++ for (i = 0; i < 10 && lowest > 3; i++) { ++ x++; ++ x %= YAFFS_NOBJECT_BUCKETS; ++ if (dev->objectBucket[x].count < lowest) { ++ lowest = dev->objectBucket[x].count; ++ l = x; ++ } ++ ++ } ++ ++ return l; ++} ++ ++static int yaffs_CreateNewObjectNumber(yaffs_Device * dev) ++{ ++ int bucket = yaffs_FindNiceObjectBucket(dev); ++ ++ /* Now find an object value that has not already been taken ++ * by scanning the list. ++ */ ++ ++ int found = 0; ++ struct list_head *i; ++ ++ __u32 n = (__u32) bucket; ++ ++ /* yaffs_CheckObjectHashSanity(); */ ++ ++ while (!found) { ++ found = 1; ++ n += YAFFS_NOBJECT_BUCKETS; ++ if (1 || dev->objectBucket[bucket].count > 0) { ++ list_for_each(i, &dev->objectBucket[bucket].list) { ++ /* If there is already one in the list */ ++ if (i ++ && list_entry(i, yaffs_Object, ++ hashLink)->objectId == n) { ++ found = 0; ++ } ++ } ++ } ++ } ++ ++ ++ return n; ++} ++ ++static void yaffs_HashObject(yaffs_Object * in) ++{ ++ int bucket = yaffs_HashFunction(in->objectId); ++ yaffs_Device *dev = in->myDev; ++ ++ list_add(&in->hashLink, &dev->objectBucket[bucket].list); ++ dev->objectBucket[bucket].count++; ++ ++} ++ ++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number) ++{ ++ int bucket = yaffs_HashFunction(number); ++ struct list_head *i; ++ yaffs_Object *in; ++ ++ list_for_each(i, &dev->objectBucket[bucket].list) { ++ /* Look if it is in the list */ ++ if (i) { ++ in = list_entry(i, yaffs_Object, hashLink); ++ if (in->objectId == number) { ++#ifdef __KERNEL__ ++ /* Don't tell the VFS about this one if it is defered free */ ++ if (in->deferedFree) ++ return NULL; ++#endif ++ ++ return in; ++ } ++ } ++ } ++ ++ return NULL; ++} ++ ++yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number, ++ yaffs_ObjectType type) ++{ ++ ++ yaffs_Object *theObject; ++ yaffs_Tnode *tn; ++ ++ if (number < 0) { ++ number = yaffs_CreateNewObjectNumber(dev); ++ } ++ ++ theObject = yaffs_AllocateEmptyObject(dev); ++ if(!theObject) ++ return NULL; ++ ++ if(type == YAFFS_OBJECT_TYPE_FILE){ ++ tn = yaffs_GetTnode(dev); ++ if(!tn){ ++ yaffs_FreeObject(theObject); ++ return NULL; ++ } ++ } ++ ++ ++ ++ if (theObject) { ++ theObject->fake = 0; ++ theObject->renameAllowed = 1; ++ theObject->unlinkAllowed = 1; ++ theObject->objectId = number; ++ yaffs_HashObject(theObject); ++ theObject->variantType = type; ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_WinFileTimeNow(theObject->win_atime); ++ theObject->win_ctime[0] = theObject->win_mtime[0] = ++ theObject->win_atime[0]; ++ theObject->win_ctime[1] = theObject->win_mtime[1] = ++ theObject->win_atime[1]; ++ ++#else ++ ++ theObject->yst_atime = theObject->yst_mtime = ++ theObject->yst_ctime = Y_CURRENT_TIME; ++#endif ++ switch (type) { ++ case YAFFS_OBJECT_TYPE_FILE: ++ theObject->variant.fileVariant.fileSize = 0; ++ theObject->variant.fileVariant.scannedFileSize = 0; ++ theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */ ++ theObject->variant.fileVariant.topLevel = 0; ++ theObject->variant.fileVariant.top = tn; ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ INIT_LIST_HEAD(&theObject->variant.directoryVariant. ++ children); ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ /* No action required */ ++ break; ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ /* todo this should not happen */ ++ break; ++ } ++ } ++ ++ return theObject; ++} ++ ++static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device * dev, ++ int number, ++ yaffs_ObjectType type) ++{ ++ yaffs_Object *theObject = NULL; ++ ++ if (number > 0) { ++ theObject = yaffs_FindObjectByNumber(dev, number); ++ } ++ ++ if (!theObject) { ++ theObject = yaffs_CreateNewObject(dev, number, type); ++ } ++ ++ return theObject; ++ ++} ++ ++ ++static YCHAR *yaffs_CloneString(const YCHAR * str) ++{ ++ YCHAR *newStr = NULL; ++ ++ if (str && *str) { ++ newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); ++ if(newStr) ++ yaffs_strcpy(newStr, str); ++ } ++ ++ return newStr; ++ ++} ++ ++/* ++ * Mknod (create) a new object. ++ * equivalentObject only has meaning for a hard link; ++ * aliasString only has meaning for a sumlink. ++ * rdev only has meaning for devices (a subset of special objects) ++ */ ++ ++static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type, ++ yaffs_Object * parent, ++ const YCHAR * name, ++ __u32 mode, ++ __u32 uid, ++ __u32 gid, ++ yaffs_Object * equivalentObject, ++ const YCHAR * aliasString, __u32 rdev) ++{ ++ yaffs_Object *in; ++ YCHAR *str; ++ ++ yaffs_Device *dev = parent->myDev; ++ ++ /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ ++ if (yaffs_FindObjectByName(parent, name)) { ++ return NULL; ++ } ++ ++ in = yaffs_CreateNewObject(dev, -1, type); ++ ++ if(type == YAFFS_OBJECT_TYPE_SYMLINK){ ++ str = yaffs_CloneString(aliasString); ++ if(!str){ ++ yaffs_FreeObject(in); ++ return NULL; ++ } ++ } ++ ++ ++ ++ if (in) { ++ in->chunkId = -1; ++ in->valid = 1; ++ in->variantType = type; ++ ++ in->yst_mode = mode; ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_WinFileTimeNow(in->win_atime); ++ in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; ++ in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; ++ ++#else ++ in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME; ++ ++ in->yst_rdev = rdev; ++ in->yst_uid = uid; ++ in->yst_gid = gid; ++#endif ++ in->nDataChunks = 0; ++ ++ yaffs_SetObjectName(in, name); ++ in->dirty = 1; ++ ++ yaffs_AddObjectToDirectory(parent, in); ++ ++ in->myDev = parent->myDev; ++ ++ switch (type) { ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ in->variant.symLinkVariant.alias = str; ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ in->variant.hardLinkVariant.equivalentObject = ++ equivalentObject; ++ in->variant.hardLinkVariant.equivalentObjectId = ++ equivalentObject->objectId; ++ list_add(&in->hardLinks, &equivalentObject->hardLinks); ++ break; ++ case YAFFS_OBJECT_TYPE_FILE: ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ /* do nothing */ ++ break; ++ } ++ ++ if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) { ++ /* Could not create the object header, fail the creation */ ++ yaffs_DestroyObject(in); ++ in = NULL; ++ } ++ ++ } ++ ++ return in; ++} ++ ++yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid) ++{ ++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, ++ uid, gid, NULL, NULL, 0); ++} ++ ++yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid) ++{ ++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, ++ mode, uid, gid, NULL, NULL, 0); ++} ++ ++yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid, __u32 rdev) ++{ ++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, ++ uid, gid, NULL, NULL, rdev); ++} ++ ++yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid, ++ const YCHAR * alias) ++{ ++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, ++ uid, gid, NULL, alias, 0); ++} ++ ++/* yaffs_Link returns the object id of the equivalent object.*/ ++yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name, ++ yaffs_Object * equivalentObject) ++{ ++ /* Get the real object in case we were fed a hard link as an equivalent object */ ++ equivalentObject = yaffs_GetEquivalentObject(equivalentObject); ++ ++ if (yaffs_MknodObject ++ (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, ++ equivalentObject, NULL, 0)) { ++ return equivalentObject; ++ } else { ++ return NULL; ++ } ++ ++} ++ ++static int yaffs_ChangeObjectName(yaffs_Object * obj, yaffs_Object * newDir, ++ const YCHAR * newName, int force, int shadows) ++{ ++ int unlinkOp; ++ int deleteOp; ++ ++ yaffs_Object *existingTarget; ++ ++ if (newDir == NULL) { ++ newDir = obj->parent; /* use the old directory */ ++ } ++ ++ if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragendy: yaffs_ChangeObjectName: newDir is not a directory" ++ TENDSTR))); ++ YBUG(); ++ } ++ ++ /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ ++ if (obj->myDev->isYaffs2) { ++ unlinkOp = (newDir == obj->myDev->unlinkedDir); ++ } else { ++ unlinkOp = (newDir == obj->myDev->unlinkedDir ++ && obj->variantType == YAFFS_OBJECT_TYPE_FILE); ++ } ++ ++ deleteOp = (newDir == obj->myDev->deletedDir); ++ ++ existingTarget = yaffs_FindObjectByName(newDir, newName); ++ ++ /* If the object is a file going into the unlinked directory, ++ * then it is OK to just stuff it in since duplicate names are allowed. ++ * else only proceed if the new name does not exist and if we're putting ++ * it into a directory. ++ */ ++ if ((unlinkOp || ++ deleteOp || ++ force || ++ (shadows > 0) || ++ !existingTarget) && ++ newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) { ++ yaffs_SetObjectName(obj, newName); ++ obj->dirty = 1; ++ ++ yaffs_AddObjectToDirectory(newDir, obj); ++ ++ if (unlinkOp) ++ obj->unlinked = 1; ++ ++ /* If it is a deletion then we mark it as a shrink for gc purposes. */ ++ if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows)>= 0) ++ return YAFFS_OK; ++ } ++ ++ return YAFFS_FAIL; ++} ++ ++int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName, ++ yaffs_Object * newDir, const YCHAR * newName) ++{ ++ yaffs_Object *obj; ++ yaffs_Object *existingTarget; ++ int force = 0; ++ ++#ifdef CONFIG_YAFFS_CASE_INSENSITIVE ++ /* Special case for case insemsitive systems (eg. WinCE). ++ * While look-up is case insensitive, the name isn't. ++ * Therefore we might want to change x.txt to X.txt ++ */ ++ if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) { ++ force = 1; ++ } ++#endif ++ ++ obj = yaffs_FindObjectByName(oldDir, oldName); ++ /* Check new name to long. */ ++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK && ++ yaffs_strlen(newName) > YAFFS_MAX_ALIAS_LENGTH) ++ /* ENAMETOOLONG */ ++ return YAFFS_FAIL; ++ else if (obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK && ++ yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH) ++ /* ENAMETOOLONG */ ++ return YAFFS_FAIL; ++ ++ if (obj && obj->renameAllowed) { ++ ++ /* Now do the handling for an existing target, if there is one */ ++ ++ existingTarget = yaffs_FindObjectByName(newDir, newName); ++ if (existingTarget && ++ existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && ++ !list_empty(&existingTarget->variant.directoryVariant.children)) { ++ /* There is a target that is a non-empty directory, so we fail */ ++ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ ++ } else if (existingTarget && existingTarget != obj) { ++ /* Nuke the target first, using shadowing, ++ * but only if it isn't the same object ++ */ ++ yaffs_ChangeObjectName(obj, newDir, newName, force, ++ existingTarget->objectId); ++ yaffs_UnlinkObject(existingTarget); ++ } ++ ++ return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0); ++ } ++ return YAFFS_FAIL; ++} ++ ++/*------------------------- Block Management and Page Allocation ----------------*/ ++ ++static int yaffs_InitialiseBlocks(yaffs_Device * dev) ++{ ++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; ++ ++ dev->blockInfo = NULL; ++ dev->chunkBits = NULL; ++ ++ dev->allocationBlock = -1; /* force it to get a new one */ ++ ++ /* If the first allocation strategy fails, thry the alternate one */ ++ dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); ++ if(!dev->blockInfo){ ++ dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); ++ dev->blockInfoAlt = 1; ++ } ++ else ++ dev->blockInfoAlt = 0; ++ ++ if(dev->blockInfo){ ++ ++ /* Set up dynamic blockinfo stuff. */ ++ dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ ++ dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); ++ if(!dev->chunkBits){ ++ dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks); ++ dev->chunkBitsAlt = 1; ++ } ++ else ++ dev->chunkBitsAlt = 0; ++ } ++ ++ if (dev->blockInfo && dev->chunkBits) { ++ memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo)); ++ memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks); ++ return YAFFS_OK; ++ } ++ ++ return YAFFS_FAIL; ++ ++} ++ ++static void yaffs_DeinitialiseBlocks(yaffs_Device * dev) ++{ ++ if(dev->blockInfoAlt && dev->blockInfo) ++ YFREE_ALT(dev->blockInfo); ++ else if(dev->blockInfo) ++ YFREE(dev->blockInfo); ++ ++ dev->blockInfoAlt = 0; ++ ++ dev->blockInfo = NULL; ++ ++ if(dev->chunkBitsAlt && dev->chunkBits) ++ YFREE_ALT(dev->chunkBits); ++ else if(dev->chunkBits) ++ YFREE(dev->chunkBits); ++ dev->chunkBitsAlt = 0; ++ dev->chunkBits = NULL; ++} ++ ++static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device * dev, ++ yaffs_BlockInfo * bi) ++{ ++ int i; ++ __u32 seq; ++ yaffs_BlockInfo *b; ++ ++ if (!dev->isYaffs2) ++ return 1; /* disqualification only applies to yaffs2. */ ++ ++ if (!bi->hasShrinkHeader) ++ return 1; /* can gc */ ++ ++ /* Find the oldest dirty sequence number if we don't know it and save it ++ * so we don't have to keep recomputing it. ++ */ ++ if (!dev->oldestDirtySequence) { ++ seq = dev->sequenceNumber; ++ ++ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; ++ i++) { ++ b = yaffs_GetBlockInfo(dev, i); ++ if (b->blockState == YAFFS_BLOCK_STATE_FULL && ++ (b->pagesInUse - b->softDeletions) < ++ dev->nChunksPerBlock && b->sequenceNumber < seq) { ++ seq = b->sequenceNumber; ++ } ++ } ++ dev->oldestDirtySequence = seq; ++ } ++ ++ /* Can't do gc of this block if there are any blocks older than this one that have ++ * discarded pages. ++ */ ++ return (bi->sequenceNumber <= dev->oldestDirtySequence); ++ ++} ++ ++/* FindDiretiestBlock is used to select the dirtiest block (or close enough) ++ * for garbage collection. ++ */ ++ ++static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev, ++ int aggressive) ++{ ++ ++ int b = dev->currentDirtyChecker; ++ ++ int i; ++ int iterations; ++ int dirtiest = -1; ++ int pagesInUse = 0; ++ int prioritised=0; ++ yaffs_BlockInfo *bi; ++ int pendingPrioritisedExist = 0; ++ ++ /* First let's see if we need to grab a prioritised block */ ++ if(dev->hasPendingPrioritisedGCs){ ++ for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){ ++ ++ bi = yaffs_GetBlockInfo(dev, i); ++ //yaffs_VerifyBlock(dev,bi,i); ++ ++ if(bi->gcPrioritise) { ++ pendingPrioritisedExist = 1; ++ if(bi->blockState == YAFFS_BLOCK_STATE_FULL && ++ yaffs_BlockNotDisqualifiedFromGC(dev, bi)){ ++ pagesInUse = (bi->pagesInUse - bi->softDeletions); ++ dirtiest = i; ++ prioritised = 1; ++ aggressive = 1; /* Fool the non-aggressive skip logiv below */ ++ } ++ } ++ } ++ ++ if(!pendingPrioritisedExist) /* None found, so we can clear this */ ++ dev->hasPendingPrioritisedGCs = 0; ++ } ++ ++ /* If we're doing aggressive GC then we are happy to take a less-dirty block, and ++ * search harder. ++ * else (we're doing a leasurely gc), then we only bother to do this if the ++ * block has only a few pages in use. ++ */ ++ ++ dev->nonAggressiveSkip--; ++ ++ if (!aggressive && (dev->nonAggressiveSkip > 0)) { ++ return -1; ++ } ++ ++ if(!prioritised) ++ pagesInUse = ++ (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1; ++ ++ if (aggressive) { ++ iterations = ++ dev->internalEndBlock - dev->internalStartBlock + 1; ++ } else { ++ iterations = ++ dev->internalEndBlock - dev->internalStartBlock + 1; ++ iterations = iterations / 16; ++ if (iterations > 200) { ++ iterations = 200; ++ } ++ } ++ ++ for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) { ++ b++; ++ if (b < dev->internalStartBlock || b > dev->internalEndBlock) { ++ b = dev->internalStartBlock; ++ } ++ ++ if (b < dev->internalStartBlock || b > dev->internalEndBlock) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> Block %d is not valid" TENDSTR), b)); ++ YBUG(); ++ } ++ ++ bi = yaffs_GetBlockInfo(dev, b); ++ ++#if 0 ++ if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) { ++ dirtiest = b; ++ pagesInUse = 0; ++ } ++ else ++#endif ++ ++ if (bi->blockState == YAFFS_BLOCK_STATE_FULL && ++ (bi->pagesInUse - bi->softDeletions) < pagesInUse && ++ yaffs_BlockNotDisqualifiedFromGC(dev, bi)) { ++ dirtiest = b; ++ pagesInUse = (bi->pagesInUse - bi->softDeletions); ++ } ++ } ++ ++ dev->currentDirtyChecker = b; ++ ++ if (dirtiest > 0) { ++ T(YAFFS_TRACE_GC, ++ (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest, ++ dev->nChunksPerBlock - pagesInUse,prioritised)); ++ } ++ ++ dev->oldestDirtySequence = 0; ++ ++ if (dirtiest > 0) { ++ dev->nonAggressiveSkip = 4; ++ } ++ ++ return dirtiest; ++} ++ ++static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo) ++{ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo); ++ ++ int erasedOk = 0; ++ ++ /* If the block is still healthy erase it and mark as clean. ++ * If the block has had a data failure, then retire it. ++ */ ++ ++ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, ++ (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR), ++ blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : "")); ++ ++ bi->blockState = YAFFS_BLOCK_STATE_DIRTY; ++ ++ if (!bi->needsRetiring) { ++ yaffs_InvalidateCheckpoint(dev); ++ erasedOk = yaffs_EraseBlockInNAND(dev, blockNo); ++ if (!erasedOk) { ++ dev->nErasureFailures++; ++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("**>> Erasure failed %d" TENDSTR), blockNo)); ++ } ++ } ++ ++ if (erasedOk && ++ ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) { ++ int i; ++ for (i = 0; i < dev->nChunksPerBlock; i++) { ++ if (!yaffs_CheckChunkErased ++ (dev, blockNo * dev->nChunksPerBlock + i)) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ (">>Block %d erasure supposedly OK, but chunk %d not erased" ++ TENDSTR), blockNo, i)); ++ } ++ } ++ } ++ ++ if (erasedOk) { ++ /* Clean it up... */ ++ bi->blockState = YAFFS_BLOCK_STATE_EMPTY; ++ dev->nErasedBlocks++; ++ bi->pagesInUse = 0; ++ bi->softDeletions = 0; ++ bi->hasShrinkHeader = 0; ++ bi->skipErasedCheck = 1; /* This is clean, so no need to check */ ++ bi->gcPrioritise = 0; ++ yaffs_ClearChunkBits(dev, blockNo); ++ ++ T(YAFFS_TRACE_ERASE, ++ (TSTR("Erased block %d" TENDSTR), blockNo)); ++ } else { ++ dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */ ++ ++ yaffs_RetireBlock(dev, blockNo); ++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("**>> Block %d retired" TENDSTR), blockNo)); ++ } ++} ++ ++static int yaffs_FindBlockForAllocation(yaffs_Device * dev) ++{ ++ int i; ++ ++ yaffs_BlockInfo *bi; ++ ++ if (dev->nErasedBlocks < 1) { ++ /* Hoosterman we've got a problem. ++ * Can't get space to gc ++ */ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("yaffs tragedy: no more eraased blocks" TENDSTR))); ++ ++ return -1; ++ } ++ ++ /* Find an empty block. */ ++ ++ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { ++ dev->allocationBlockFinder++; ++ if (dev->allocationBlockFinder < dev->internalStartBlock ++ || dev->allocationBlockFinder > dev->internalEndBlock) { ++ dev->allocationBlockFinder = dev->internalStartBlock; ++ } ++ ++ bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder); ++ ++ if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) { ++ bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING; ++ dev->sequenceNumber++; ++ bi->sequenceNumber = dev->sequenceNumber; ++ dev->nErasedBlocks--; ++ T(YAFFS_TRACE_ALLOCATE, ++ (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), ++ dev->allocationBlockFinder, dev->sequenceNumber, ++ dev->nErasedBlocks)); ++ return dev->allocationBlockFinder; ++ } ++ } ++ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("yaffs tragedy: no more eraased blocks, but there should have been %d" ++ TENDSTR), dev->nErasedBlocks)); ++ ++ return -1; ++} ++ ++ ++// Check if there's space to allocate... ++// Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()? ++static int yaffs_CheckSpaceForAllocation(yaffs_Device * dev) ++{ ++ int reservedChunks; ++ int reservedBlocks = dev->nReservedBlocks; ++ int checkpointBlocks; ++ ++ checkpointBlocks = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint; ++ if(checkpointBlocks < 0) ++ checkpointBlocks = 0; ++ ++ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock); ++ ++ return (dev->nFreeChunks > reservedChunks); ++} ++ ++static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr) ++{ ++ int retVal; ++ yaffs_BlockInfo *bi; ++ ++ if (dev->allocationBlock < 0) { ++ /* Get next block to allocate off */ ++ dev->allocationBlock = yaffs_FindBlockForAllocation(dev); ++ dev->allocationPage = 0; ++ } ++ ++ if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) { ++ /* Not enough space to allocate unless we're allowed to use the reserve. */ ++ return -1; ++ } ++ ++ if (dev->nErasedBlocks < dev->nReservedBlocks ++ && dev->allocationPage == 0) { ++ T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); ++ } ++ ++ /* Next page please.... */ ++ if (dev->allocationBlock >= 0) { ++ bi = yaffs_GetBlockInfo(dev, dev->allocationBlock); ++ ++ retVal = (dev->allocationBlock * dev->nChunksPerBlock) + ++ dev->allocationPage; ++ bi->pagesInUse++; ++ yaffs_SetChunkBit(dev, dev->allocationBlock, ++ dev->allocationPage); ++ ++ dev->allocationPage++; ++ ++ dev->nFreeChunks--; ++ ++ /* If the block is full set the state to full */ ++ if (dev->allocationPage >= dev->nChunksPerBlock) { ++ bi->blockState = YAFFS_BLOCK_STATE_FULL; ++ dev->allocationBlock = -1; ++ } ++ ++ if(blockUsedPtr) ++ *blockUsedPtr = bi; ++ ++ return retVal; ++ } ++ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); ++ ++ return -1; ++} ++ ++static int yaffs_GetErasedChunks(yaffs_Device * dev) ++{ ++ int n; ++ ++ n = dev->nErasedBlocks * dev->nChunksPerBlock; ++ ++ if (dev->allocationBlock > 0) { ++ n += (dev->nChunksPerBlock - dev->allocationPage); ++ } ++ ++ return n; ++ ++} ++ ++static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block) ++{ ++ int oldChunk; ++ int newChunk; ++ int chunkInBlock; ++ int markNAND; ++ int retVal = YAFFS_OK; ++ int cleanups = 0; ++ int i; ++ int isCheckpointBlock; ++ int matchingChunk; ++ ++ int chunksBefore = yaffs_GetErasedChunks(dev); ++ int chunksAfter; ++ ++ yaffs_ExtendedTags tags; ++ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block); ++ ++ yaffs_Object *object; ++ ++ isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT); ++ ++ bi->blockState = YAFFS_BLOCK_STATE_COLLECTING; ++ ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block, ++ bi->pagesInUse, bi->hasShrinkHeader)); ++ ++ /*yaffs_VerifyFreeChunks(dev); */ ++ ++ bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */ ++ ++ /* Take off the number of soft deleted entries because ++ * they're going to get really deleted during GC. ++ */ ++ dev->nFreeChunks -= bi->softDeletions; ++ ++ dev->isDoingGC = 1; ++ ++ if (isCheckpointBlock || ++ !yaffs_StillSomeChunkBits(dev, block)) { ++ T(YAFFS_TRACE_TRACING, ++ (TSTR ++ ("Collecting block %d that has no chunks in use" TENDSTR), ++ block)); ++ yaffs_BlockBecameDirty(dev, block); ++ } else { ++ ++ __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ yaffs_VerifyBlock(dev,bi,block); ++ ++ for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock; ++ chunkInBlock < dev->nChunksPerBlock ++ && yaffs_StillSomeChunkBits(dev, block); ++ chunkInBlock++, oldChunk++) { ++ if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) { ++ ++ /* This page is in use and might need to be copied off */ ++ ++ markNAND = 1; ++ ++ yaffs_InitialiseTags(&tags); ++ ++ yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk, ++ buffer, &tags); ++ ++ object = ++ yaffs_FindObjectByNumber(dev, ++ tags.objectId); ++ ++ T(YAFFS_TRACE_GC_DETAIL, ++ (TSTR ++ ("Collecting page %d, %d %d %d " TENDSTR), ++ chunkInBlock, tags.objectId, tags.chunkId, ++ tags.byteCount)); ++ ++ if(object && !yaffs_SkipVerification(dev)){ ++ if(tags.chunkId == 0) ++ matchingChunk = object->chunkId; ++ else if(object->softDeleted) ++ matchingChunk = oldChunk; /* Defeat the test */ ++ else ++ matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL); ++ ++ if(oldChunk != matchingChunk) ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), ++ oldChunk,matchingChunk,tags.objectId, tags.chunkId)); ++ ++ } ++ ++ if (!object) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("page %d in gc has no object: %d %d %d " ++ TENDSTR), oldChunk, ++ tags.objectId, tags.chunkId, tags.byteCount)); ++ } ++ ++ if (object && object->deleted ++ && tags.chunkId != 0) { ++ /* Data chunk in a deleted file, throw it away ++ * It's a soft deleted data chunk, ++ * No need to copy this, just forget about it and ++ * fix up the object. ++ */ ++ ++ object->nDataChunks--; ++ ++ if (object->nDataChunks <= 0) { ++ /* remeber to clean up the object */ ++ dev->gcCleanupList[cleanups] = ++ tags.objectId; ++ cleanups++; ++ } ++ markNAND = 0; ++ } else if (0 ++ /* Todo object && object->deleted && object->nDataChunks == 0 */ ++ ) { ++ /* Deleted object header with no data chunks. ++ * Can be discarded and the file deleted. ++ */ ++ object->chunkId = 0; ++ yaffs_FreeTnode(object->myDev, ++ object->variant. ++ fileVariant.top); ++ object->variant.fileVariant.top = NULL; ++ yaffs_DoGenericObjectDeletion(object); ++ ++ } else if (object) { ++ /* It's either a data chunk in a live file or ++ * an ObjectHeader, so we're interested in it. ++ * NB Need to keep the ObjectHeaders of deleted files ++ * until the whole file has been deleted off ++ */ ++ tags.serialNumber++; ++ ++ dev->nGCCopies++; ++ ++ if (tags.chunkId == 0) { ++ /* It is an object Id, ++ * We need to nuke the shrinkheader flags first ++ * We no longer want the shrinkHeader flag since its work is done ++ * and if it is left in place it will mess up scanning. ++ * Also, clear out any shadowing stuff ++ */ ++ ++ yaffs_ObjectHeader *oh; ++ oh = (yaffs_ObjectHeader *)buffer; ++ oh->isShrink = 0; ++ oh->shadowsObject = -1; ++ tags.extraShadows = 0; ++ tags.extraIsShrinkHeader = 0; ++ ++ yaffs_VerifyObjectHeader(object,oh,&tags,1); ++ } ++ ++ newChunk = ++ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1); ++ ++ if (newChunk < 0) { ++ retVal = YAFFS_FAIL; ++ } else { ++ ++ /* Ok, now fix up the Tnodes etc. */ ++ ++ if (tags.chunkId == 0) { ++ /* It's a header */ ++ object->chunkId = newChunk; ++ object->serial = tags.serialNumber; ++ } else { ++ /* It's a data chunk */ ++ yaffs_PutChunkIntoFile ++ (object, ++ tags.chunkId, ++ newChunk, 0); ++ } ++ } ++ } ++ ++ yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__); ++ ++ } ++ } ++ ++ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); ++ ++ ++ /* Do any required cleanups */ ++ for (i = 0; i < cleanups; i++) { ++ /* Time to delete the file too */ ++ object = ++ yaffs_FindObjectByNumber(dev, ++ dev->gcCleanupList[i]); ++ if (object) { ++ yaffs_FreeTnode(dev, ++ object->variant.fileVariant. ++ top); ++ object->variant.fileVariant.top = NULL; ++ T(YAFFS_TRACE_GC, ++ (TSTR ++ ("yaffs: About to finally delete object %d" ++ TENDSTR), object->objectId)); ++ yaffs_DoGenericObjectDeletion(object); ++ object->myDev->nDeletedFiles--; ++ } ++ ++ } ++ ++ } ++ ++ yaffs_VerifyCollectedBlock(dev,bi,block); ++ ++ if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) { ++ T(YAFFS_TRACE_GC, ++ (TSTR ++ ("gc did not increase free chunks before %d after %d" ++ TENDSTR), chunksBefore, chunksAfter)); ++ } ++ ++ dev->isDoingGC = 0; ++ ++ return YAFFS_OK; ++} ++ ++/* New garbage collector ++ * If we're very low on erased blocks then we do aggressive garbage collection ++ * otherwise we do "leasurely" garbage collection. ++ * Aggressive gc looks further (whole array) and will accept less dirty blocks. ++ * Passive gc only inspects smaller areas and will only accept more dirty blocks. ++ * ++ * The idea is to help clear out space in a more spread-out manner. ++ * Dunno if it really does anything useful. ++ */ ++static int yaffs_CheckGarbageCollection(yaffs_Device * dev) ++{ ++ int block; ++ int aggressive; ++ int gcOk = YAFFS_OK; ++ int maxTries = 0; ++ ++ int checkpointBlockAdjust; ++ ++ if (dev->isDoingGC) { ++ /* Bail out so we don't get recursive gc */ ++ return YAFFS_OK; ++ } ++ ++ /* This loop should pass the first time. ++ * We'll only see looping here if the erase of the collected block fails. ++ */ ++ ++ do { ++ maxTries++; ++ ++ checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint); ++ if(checkpointBlockAdjust < 0) ++ checkpointBlockAdjust = 0; ++ ++ if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) { ++ /* We need a block soon...*/ ++ aggressive = 1; ++ } else { ++ /* We're in no hurry */ ++ aggressive = 0; ++ } ++ ++ block = yaffs_FindBlockForGarbageCollection(dev, aggressive); ++ ++ if (block > 0) { ++ dev->garbageCollections++; ++ if (!aggressive) { ++ dev->passiveGarbageCollections++; ++ } ++ ++ T(YAFFS_TRACE_GC, ++ (TSTR ++ ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), ++ dev->nErasedBlocks, aggressive)); ++ ++ gcOk = yaffs_GarbageCollectBlock(dev, block); ++ } ++ ++ if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) { ++ T(YAFFS_TRACE_GC, ++ (TSTR ++ ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d" ++ TENDSTR), dev->nErasedBlocks, maxTries, block)); ++ } ++ } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0) ++ && (maxTries < 2)); ++ ++ return aggressive ? gcOk : YAFFS_OK; ++} ++ ++/*------------------------- TAGS --------------------------------*/ ++ ++static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId, ++ int chunkInObject) ++{ ++ return (tags->chunkId == chunkInObject && ++ tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0; ++ ++} ++ ++ ++/*-------------------- Data file manipulation -----------------*/ ++ ++static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode, ++ yaffs_ExtendedTags * tags) ++{ ++ /*Get the Tnode, then get the level 0 offset chunk offset */ ++ yaffs_Tnode *tn; ++ int theChunk = -1; ++ yaffs_ExtendedTags localTags; ++ int retVal = -1; ++ ++ yaffs_Device *dev = in->myDev; ++ ++ if (!tags) { ++ /* Passed a NULL, so use our own tags space */ ++ tags = &localTags; ++ } ++ ++ tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); ++ ++ if (tn) { ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode); ++ ++ retVal = ++ yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, ++ chunkInInode); ++ } ++ return retVal; ++} ++ ++static int yaffs_FindAndDeleteChunkInFile(yaffs_Object * in, int chunkInInode, ++ yaffs_ExtendedTags * tags) ++{ ++ /* Get the Tnode, then get the level 0 offset chunk offset */ ++ yaffs_Tnode *tn; ++ int theChunk = -1; ++ yaffs_ExtendedTags localTags; ++ ++ yaffs_Device *dev = in->myDev; ++ int retVal = -1; ++ ++ if (!tags) { ++ /* Passed a NULL, so use our own tags space */ ++ tags = &localTags; ++ } ++ ++ tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); ++ ++ if (tn) { ++ ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode); ++ ++ retVal = ++ yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, ++ chunkInInode); ++ ++ /* Delete the entry in the filestructure (if found) */ ++ if (retVal != -1) { ++ yaffs_PutLevel0Tnode(dev,tn,chunkInInode,0); ++ } ++ } else { ++ /*T(("No level 0 found for %d\n", chunkInInode)); */ ++ } ++ ++ if (retVal == -1) { ++ /* T(("Could not find %d to delete\n",chunkInInode)); */ ++ } ++ return retVal; ++} ++ ++#ifdef YAFFS_PARANOID ++ ++static int yaffs_CheckFileSanity(yaffs_Object * in) ++{ ++ int chunk; ++ int nChunks; ++ int fSize; ++ int failed = 0; ++ int objId; ++ yaffs_Tnode *tn; ++ yaffs_Tags localTags; ++ yaffs_Tags *tags = &localTags; ++ int theChunk; ++ int chunkDeleted; ++ ++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { ++ /* T(("Object not a file\n")); */ ++ return YAFFS_FAIL; ++ } ++ ++ objId = in->objectId; ++ fSize = in->variant.fileVariant.fileSize; ++ nChunks = ++ (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk; ++ ++ for (chunk = 1; chunk <= nChunks; chunk++) { ++ tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant, ++ chunk); ++ ++ if (tn) { ++ ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunk); ++ ++ if (yaffs_CheckChunkBits ++ (dev, theChunk / dev->nChunksPerBlock, ++ theChunk % dev->nChunksPerBlock)) { ++ ++ yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk, ++ tags, ++ &chunkDeleted); ++ if (yaffs_TagsMatch ++ (tags, in->objectId, chunk, chunkDeleted)) { ++ /* found it; */ ++ ++ } ++ } else { ++ ++ failed = 1; ++ } ++ ++ } else { ++ /* T(("No level 0 found for %d\n", chunk)); */ ++ } ++ } ++ ++ return failed ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++#endif ++ ++static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode, ++ int chunkInNAND, int inScan) ++{ ++ /* NB inScan is zero unless scanning. ++ * For forward scanning, inScan is > 0; ++ * for backward scanning inScan is < 0 ++ */ ++ ++ yaffs_Tnode *tn; ++ yaffs_Device *dev = in->myDev; ++ int existingChunk; ++ yaffs_ExtendedTags existingTags; ++ yaffs_ExtendedTags newTags; ++ unsigned existingSerial, newSerial; ++ ++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { ++ /* Just ignore an attempt at putting a chunk into a non-file during scanning ++ * If it is not during Scanning then something went wrong! ++ */ ++ if (!inScan) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs tragedy:attempt to put data chunk into a non-file" ++ TENDSTR))); ++ YBUG(); ++ } ++ ++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); ++ return YAFFS_OK; ++ } ++ ++ tn = yaffs_AddOrFindLevel0Tnode(dev, ++ &in->variant.fileVariant, ++ chunkInInode, ++ NULL); ++ if (!tn) { ++ return YAFFS_FAIL; ++ } ++ ++ existingChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode); ++ ++ if (inScan != 0) { ++ /* If we're scanning then we need to test for duplicates ++ * NB This does not need to be efficient since it should only ever ++ * happen when the power fails during a write, then only one ++ * chunk should ever be affected. ++ * ++ * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO ++ * Update: For backward scanning we don't need to re-read tags so this is quite cheap. ++ */ ++ ++ if (existingChunk != 0) { ++ /* NB Right now existing chunk will not be real chunkId if the device >= 32MB ++ * thus we have to do a FindChunkInFile to get the real chunk id. ++ * ++ * We have a duplicate now we need to decide which one to use: ++ * ++ * Backwards scanning YAFFS2: The old one is what we use, dump the new one. ++ * Forward scanning YAFFS2: The new one is what we use, dump the old one. ++ * YAFFS1: Get both sets of tags and compare serial numbers. ++ */ ++ ++ if (inScan > 0) { ++ /* Only do this for forward scanning */ ++ yaffs_ReadChunkWithTagsFromNAND(dev, ++ chunkInNAND, ++ NULL, &newTags); ++ ++ /* Do a proper find */ ++ existingChunk = ++ yaffs_FindChunkInFile(in, chunkInInode, ++ &existingTags); ++ } ++ ++ if (existingChunk <= 0) { ++ /*Hoosterman - how did this happen? */ ++ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs tragedy: existing chunk < 0 in scan" ++ TENDSTR))); ++ ++ } ++ ++ /* NB The deleted flags should be false, otherwise the chunks will ++ * not be loaded during a scan ++ */ ++ ++ newSerial = newTags.serialNumber; ++ existingSerial = existingTags.serialNumber; ++ ++ if ((inScan > 0) && ++ (in->myDev->isYaffs2 || ++ existingChunk <= 0 || ++ ((existingSerial + 1) & 3) == newSerial)) { ++ /* Forward scanning. ++ * Use new ++ * Delete the old one and drop through to update the tnode ++ */ ++ yaffs_DeleteChunk(dev, existingChunk, 1, ++ __LINE__); ++ } else { ++ /* Backward scanning or we want to use the existing one ++ * Use existing. ++ * Delete the new one and return early so that the tnode isn't changed ++ */ ++ yaffs_DeleteChunk(dev, chunkInNAND, 1, ++ __LINE__); ++ return YAFFS_OK; ++ } ++ } ++ ++ } ++ ++ if (existingChunk == 0) { ++ in->nDataChunks++; ++ } ++ ++ yaffs_PutLevel0Tnode(dev,tn,chunkInInode,chunkInNAND); ++ ++ return YAFFS_OK; ++} ++ ++static int yaffs_ReadChunkDataFromObject(yaffs_Object * in, int chunkInInode, ++ __u8 * buffer) ++{ ++ int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL); ++ ++ if (chunkInNAND >= 0) { ++ return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND, ++ buffer,NULL); ++ } else { ++ T(YAFFS_TRACE_NANDACCESS, ++ (TSTR("Chunk %d not found zero instead" TENDSTR), ++ chunkInNAND)); ++ /* get sane (zero) data if you read a hole */ ++ memset(buffer, 0, in->myDev->nDataBytesPerChunk); ++ return 0; ++ } ++ ++} ++ ++void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn) ++{ ++ int block; ++ int page; ++ yaffs_ExtendedTags tags; ++ yaffs_BlockInfo *bi; ++ ++ if (chunkId <= 0) ++ return; ++ ++ ++ dev->nDeletions++; ++ block = chunkId / dev->nChunksPerBlock; ++ page = chunkId % dev->nChunksPerBlock; ++ ++ ++ if(!yaffs_CheckChunkBit(dev,block,page)) ++ T(YAFFS_TRACE_VERIFY, ++ (TSTR("Deleting invalid chunk %d"TENDSTR), ++ chunkId)); ++ ++ bi = yaffs_GetBlockInfo(dev, block); ++ ++ T(YAFFS_TRACE_DELETION, ++ (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId)); ++ ++ if (markNAND && ++ bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) { ++ ++ yaffs_InitialiseTags(&tags); ++ ++ tags.chunkDeleted = 1; ++ ++ yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags); ++ yaffs_HandleUpdateChunk(dev, chunkId, &tags); ++ } else { ++ dev->nUnmarkedDeletions++; ++ } ++ ++ /* Pull out of the management area. ++ * If the whole block became dirty, this will kick off an erasure. ++ */ ++ if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || ++ bi->blockState == YAFFS_BLOCK_STATE_FULL || ++ bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING || ++ bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) { ++ dev->nFreeChunks++; ++ ++ yaffs_ClearChunkBit(dev, block, page); ++ ++ bi->pagesInUse--; ++ ++ if (bi->pagesInUse == 0 && ++ !bi->hasShrinkHeader && ++ bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING && ++ bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) { ++ yaffs_BlockBecameDirty(dev, block); ++ } ++ ++ } else { ++ /* T(("Bad news deleting chunk %d\n",chunkId)); */ ++ } ++ ++} ++ ++static int yaffs_WriteChunkDataToObject(yaffs_Object * in, int chunkInInode, ++ const __u8 * buffer, int nBytes, ++ int useReserve) ++{ ++ /* Find old chunk Need to do this to get serial number ++ * Write new one and patch into tree. ++ * Invalidate old tags. ++ */ ++ ++ int prevChunkId; ++ yaffs_ExtendedTags prevTags; ++ ++ int newChunkId; ++ yaffs_ExtendedTags newTags; ++ ++ yaffs_Device *dev = in->myDev; ++ ++ yaffs_CheckGarbageCollection(dev); ++ ++ /* Get the previous chunk at this location in the file if it exists */ ++ prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags); ++ ++ /* Set up new tags */ ++ yaffs_InitialiseTags(&newTags); ++ ++ newTags.chunkId = chunkInInode; ++ newTags.objectId = in->objectId; ++ newTags.serialNumber = ++ (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1; ++ newTags.byteCount = nBytes; ++ ++ newChunkId = ++ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, ++ useReserve); ++ ++ if (newChunkId >= 0) { ++ yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0); ++ ++ if (prevChunkId >= 0) { ++ yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__); ++ ++ } ++ ++ yaffs_CheckFileSanity(in); ++ } ++ return newChunkId; ++ ++} ++ ++/* UpdateObjectHeader updates the header on NAND for an object. ++ * If name is not NULL, then that new name is used. ++ */ ++int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name, int force, ++ int isShrink, int shadows) ++{ ++ ++ yaffs_BlockInfo *bi; ++ ++ yaffs_Device *dev = in->myDev; ++ ++ int prevChunkId; ++ int retVal = 0; ++ int result = 0; ++ ++ int newChunkId; ++ yaffs_ExtendedTags newTags; ++ yaffs_ExtendedTags oldTags; ++ ++ __u8 *buffer = NULL; ++ YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; ++ ++ yaffs_ObjectHeader *oh = NULL; ++ ++ yaffs_strcpy(oldName,"silly old name"); ++ ++ if (!in->fake || force) { ++ ++ yaffs_CheckGarbageCollection(dev); ++ yaffs_CheckObjectDetailsLoaded(in); ++ ++ buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); ++ oh = (yaffs_ObjectHeader *) buffer; ++ ++ prevChunkId = in->chunkId; ++ ++ if (prevChunkId >= 0) { ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, ++ buffer, &oldTags); ++ ++ yaffs_VerifyObjectHeader(in,oh,&oldTags,0); ++ ++ memcpy(oldName, oh->name, sizeof(oh->name)); ++ } ++ ++ memset(buffer, 0xFF, dev->nDataBytesPerChunk); ++ ++ oh->type = in->variantType; ++ oh->yst_mode = in->yst_mode; ++ oh->shadowsObject = shadows; ++ ++#ifdef CONFIG_YAFFS_WINCE ++ oh->win_atime[0] = in->win_atime[0]; ++ oh->win_ctime[0] = in->win_ctime[0]; ++ oh->win_mtime[0] = in->win_mtime[0]; ++ oh->win_atime[1] = in->win_atime[1]; ++ oh->win_ctime[1] = in->win_ctime[1]; ++ oh->win_mtime[1] = in->win_mtime[1]; ++#else ++ oh->yst_uid = in->yst_uid; ++ oh->yst_gid = in->yst_gid; ++ oh->yst_atime = in->yst_atime; ++ oh->yst_mtime = in->yst_mtime; ++ oh->yst_ctime = in->yst_ctime; ++ oh->yst_rdev = in->yst_rdev; ++#endif ++ if (in->parent) { ++ oh->parentObjectId = in->parent->objectId; ++ } else { ++ oh->parentObjectId = 0; ++ } ++ ++ if (name && *name) { ++ memset(oh->name, 0, sizeof(oh->name)); ++ yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); ++ } else if (prevChunkId>=0) { ++ memcpy(oh->name, oldName, sizeof(oh->name)); ++ } else { ++ memset(oh->name, 0, sizeof(oh->name)); ++ } ++ ++ oh->isShrink = isShrink; ++ ++ switch (in->variantType) { ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ /* Should not happen */ ++ break; ++ case YAFFS_OBJECT_TYPE_FILE: ++ oh->fileSize = ++ (oh->parentObjectId == YAFFS_OBJECTID_DELETED ++ || oh->parentObjectId == ++ YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. ++ fileVariant.fileSize; ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ oh->equivalentObjectId = ++ in->variant.hardLinkVariant.equivalentObjectId; ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ /* Do nothing */ ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ /* Do nothing */ ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ yaffs_strncpy(oh->alias, ++ in->variant.symLinkVariant.alias, ++ YAFFS_MAX_ALIAS_LENGTH); ++ oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; ++ break; ++ } ++ ++ /* Tags */ ++ yaffs_InitialiseTags(&newTags); ++ in->serial++; ++ newTags.chunkId = 0; ++ newTags.objectId = in->objectId; ++ newTags.serialNumber = in->serial; ++ ++ /* Add extra info for file header */ ++ ++ newTags.extraHeaderInfoAvailable = 1; ++ newTags.extraParentObjectId = oh->parentObjectId; ++ newTags.extraFileLength = oh->fileSize; ++ newTags.extraIsShrinkHeader = oh->isShrink; ++ newTags.extraEquivalentObjectId = oh->equivalentObjectId; ++ newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0; ++ newTags.extraObjectType = in->variantType; ++ ++ yaffs_VerifyObjectHeader(in,oh,&newTags,1); ++ ++ /* Create new chunk in NAND */ ++ newChunkId = ++ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags, ++ (prevChunkId >= 0) ? 1 : 0); ++ ++ if (newChunkId >= 0) { ++ ++ in->chunkId = newChunkId; ++ ++ if (prevChunkId >= 0) { ++ yaffs_DeleteChunk(dev, prevChunkId, 1, ++ __LINE__); ++ } ++ ++ if(!yaffs_ObjectHasCachedWriteData(in)) ++ in->dirty = 0; ++ ++ /* If this was a shrink, then mark the block that the chunk lives on */ ++ if (isShrink) { ++ bi = yaffs_GetBlockInfo(in->myDev, ++ newChunkId /in->myDev-> nChunksPerBlock); ++ bi->hasShrinkHeader = 1; ++ } ++ ++ } ++ ++ retVal = newChunkId; ++ ++ } ++ ++ if (buffer) ++ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); ++ ++ return retVal; ++} ++ ++/*------------------------ Short Operations Cache ---------------------------------------- ++ * In many situations where there is no high level buffering (eg WinCE) a lot of ++ * reads might be short sequential reads, and a lot of writes may be short ++ * sequential writes. eg. scanning/writing a jpeg file. ++ * In these cases, a short read/write cache can provide a huge perfomance benefit ++ * with dumb-as-a-rock code. ++ * In Linux, the page cache provides read buffering aand the short op cache provides write ++ * buffering. ++ * ++ * There are a limited number (~10) of cache chunks per device so that we don't ++ * need a very intelligent search. ++ */ ++ ++static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj) ++{ ++ yaffs_Device *dev = obj->myDev; ++ int i; ++ yaffs_ChunkCache *cache; ++ int nCaches = obj->myDev->nShortOpCaches; ++ ++ for(i = 0; i < nCaches; i++){ ++ cache = &dev->srCache[i]; ++ if (cache->object == obj && ++ cache->dirty) ++ return 1; ++ } ++ ++ return 0; ++} ++ ++ ++static void yaffs_FlushFilesChunkCache(yaffs_Object * obj) ++{ ++ yaffs_Device *dev = obj->myDev; ++ int lowest = -99; /* Stop compiler whining. */ ++ int i; ++ yaffs_ChunkCache *cache; ++ int chunkWritten = 0; ++ int nCaches = obj->myDev->nShortOpCaches; ++ ++ if (nCaches > 0) { ++ do { ++ cache = NULL; ++ ++ /* Find the dirty cache for this object with the lowest chunk id. */ ++ for (i = 0; i < nCaches; i++) { ++ if (dev->srCache[i].object == obj && ++ dev->srCache[i].dirty) { ++ if (!cache ++ || dev->srCache[i].chunkId < ++ lowest) { ++ cache = &dev->srCache[i]; ++ lowest = cache->chunkId; ++ } ++ } ++ } ++ ++ if (cache && !cache->locked) { ++ /* Write it out and free it up */ ++ ++ chunkWritten = ++ yaffs_WriteChunkDataToObject(cache->object, ++ cache->chunkId, ++ cache->data, ++ cache->nBytes, ++ 1); ++ cache->dirty = 0; ++ cache->object = NULL; ++ } ++ ++ } while (cache && chunkWritten > 0); ++ ++ if (cache) { ++ /* Hoosterman, disk full while writing cache out. */ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); ++ ++ } ++ } ++ ++} ++ ++/*yaffs_FlushEntireDeviceCache(dev) ++ * ++ * ++ */ ++ ++void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) ++{ ++ yaffs_Object *obj; ++ int nCaches = dev->nShortOpCaches; ++ int i; ++ ++ /* Find a dirty object in the cache and flush it... ++ * until there are no further dirty objects. ++ */ ++ do { ++ obj = NULL; ++ for( i = 0; i < nCaches && !obj; i++) { ++ if (dev->srCache[i].object && ++ dev->srCache[i].dirty) ++ obj = dev->srCache[i].object; ++ ++ } ++ if(obj) ++ yaffs_FlushFilesChunkCache(obj); ++ ++ } while(obj); ++ ++} ++ ++ ++/* Grab us a cache chunk for use. ++ * First look for an empty one. ++ * Then look for the least recently used non-dirty one. ++ * Then look for the least recently used dirty one...., flush and look again. ++ */ ++static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device * dev) ++{ ++ int i; ++ int usage; ++ int theOne; ++ ++ if (dev->nShortOpCaches > 0) { ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if (!dev->srCache[i].object) ++ return &dev->srCache[i]; ++ } ++ ++ return NULL; ++ ++ theOne = -1; ++ usage = 0; /* just to stop the compiler grizzling */ ++ ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if (!dev->srCache[i].dirty && ++ ((dev->srCache[i].lastUse < usage && theOne >= 0) || ++ theOne < 0)) { ++ usage = dev->srCache[i].lastUse; ++ theOne = i; ++ } ++ } ++ ++ ++ return theOne >= 0 ? &dev->srCache[theOne] : NULL; ++ } else { ++ return NULL; ++ } ++ ++} ++ ++static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device * dev) ++{ ++ yaffs_ChunkCache *cache; ++ yaffs_Object *theObj; ++ int usage; ++ int i; ++ int pushout; ++ ++ if (dev->nShortOpCaches > 0) { ++ /* Try find a non-dirty one... */ ++ ++ cache = yaffs_GrabChunkCacheWorker(dev); ++ ++ if (!cache) { ++ /* They were all dirty, find the last recently used object and flush ++ * its cache, then find again. ++ * NB what's here is not very accurate, we actually flush the object ++ * the last recently used page. ++ */ ++ ++ /* With locking we can't assume we can use entry zero */ ++ ++ theObj = NULL; ++ usage = -1; ++ cache = NULL; ++ pushout = -1; ++ ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if (dev->srCache[i].object && ++ !dev->srCache[i].locked && ++ (dev->srCache[i].lastUse < usage || !cache)) ++ { ++ usage = dev->srCache[i].lastUse; ++ theObj = dev->srCache[i].object; ++ cache = &dev->srCache[i]; ++ pushout = i; ++ } ++ } ++ ++ if (!cache || cache->dirty) { ++ /* Flush and try again */ ++ yaffs_FlushFilesChunkCache(theObj); ++ cache = yaffs_GrabChunkCacheWorker(dev); ++ } ++ ++ } ++ return cache; ++ } else ++ return NULL; ++ ++} ++ ++/* Find a cached chunk */ ++static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object * obj, ++ int chunkId) ++{ ++ yaffs_Device *dev = obj->myDev; ++ int i; ++ if (dev->nShortOpCaches > 0) { ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if (dev->srCache[i].object == obj && ++ dev->srCache[i].chunkId == chunkId) { ++ dev->cacheHits++; ++ ++ return &dev->srCache[i]; ++ } ++ } ++ } ++ return NULL; ++} ++ ++/* Mark the chunk for the least recently used algorithym */ ++static void yaffs_UseChunkCache(yaffs_Device * dev, yaffs_ChunkCache * cache, ++ int isAWrite) ++{ ++ ++ if (dev->nShortOpCaches > 0) { ++ if (dev->srLastUse < 0 || dev->srLastUse > 100000000) { ++ /* Reset the cache usages */ ++ int i; ++ for (i = 1; i < dev->nShortOpCaches; i++) { ++ dev->srCache[i].lastUse = 0; ++ } ++ dev->srLastUse = 0; ++ } ++ ++ dev->srLastUse++; ++ ++ cache->lastUse = dev->srLastUse; ++ ++ if (isAWrite) { ++ cache->dirty = 1; ++ } ++ } ++} ++ ++/* Invalidate a single cache page. ++ * Do this when a whole page gets written, ++ * ie the short cache for this page is no longer valid. ++ */ ++static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId) ++{ ++ if (object->myDev->nShortOpCaches > 0) { ++ yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId); ++ ++ if (cache) { ++ cache->object = NULL; ++ } ++ } ++} ++ ++/* Invalidate all the cache pages associated with this object ++ * Do this whenever ther file is deleted or resized. ++ */ ++static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in) ++{ ++ int i; ++ yaffs_Device *dev = in->myDev; ++ ++ if (dev->nShortOpCaches > 0) { ++ /* Invalidate it. */ ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if (dev->srCache[i].object == in) { ++ dev->srCache[i].object = NULL; ++ } ++ } ++ } ++} ++ ++/*--------------------- Checkpointing --------------------*/ ++ ++ ++static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head) ++{ ++ yaffs_CheckpointValidity cp; ++ ++ memset(&cp,0,sizeof(cp)); ++ ++ cp.structType = sizeof(cp); ++ cp.magic = YAFFS_MAGIC; ++ cp.version = YAFFS_CHECKPOINT_VERSION; ++ cp.head = (head) ? 1 : 0; ++ ++ return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))? ++ 1 : 0; ++} ++ ++static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head) ++{ ++ yaffs_CheckpointValidity cp; ++ int ok; ++ ++ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp)); ++ ++ if(ok) ++ ok = (cp.structType == sizeof(cp)) && ++ (cp.magic == YAFFS_MAGIC) && ++ (cp.version == YAFFS_CHECKPOINT_VERSION) && ++ (cp.head == ((head) ? 1 : 0)); ++ return ok ? 1 : 0; ++} ++ ++static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp, ++ yaffs_Device *dev) ++{ ++ cp->nErasedBlocks = dev->nErasedBlocks; ++ cp->allocationBlock = dev->allocationBlock; ++ cp->allocationPage = dev->allocationPage; ++ cp->nFreeChunks = dev->nFreeChunks; ++ ++ cp->nDeletedFiles = dev->nDeletedFiles; ++ cp->nUnlinkedFiles = dev->nUnlinkedFiles; ++ cp->nBackgroundDeletions = dev->nBackgroundDeletions; ++ cp->sequenceNumber = dev->sequenceNumber; ++ cp->oldestDirtySequence = dev->oldestDirtySequence; ++ ++} ++ ++static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev, ++ yaffs_CheckpointDevice *cp) ++{ ++ dev->nErasedBlocks = cp->nErasedBlocks; ++ dev->allocationBlock = cp->allocationBlock; ++ dev->allocationPage = cp->allocationPage; ++ dev->nFreeChunks = cp->nFreeChunks; ++ ++ dev->nDeletedFiles = cp->nDeletedFiles; ++ dev->nUnlinkedFiles = cp->nUnlinkedFiles; ++ dev->nBackgroundDeletions = cp->nBackgroundDeletions; ++ dev->sequenceNumber = cp->sequenceNumber; ++ dev->oldestDirtySequence = cp->oldestDirtySequence; ++} ++ ++ ++static int yaffs_WriteCheckpointDevice(yaffs_Device *dev) ++{ ++ yaffs_CheckpointDevice cp; ++ __u32 nBytes; ++ __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); ++ ++ int ok; ++ ++ /* Write device runtime values*/ ++ yaffs_DeviceToCheckpointDevice(&cp,dev); ++ cp.structType = sizeof(cp); ++ ++ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp)); ++ ++ /* Write block info */ ++ if(ok) { ++ nBytes = nBlocks * sizeof(yaffs_BlockInfo); ++ ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes); ++ } ++ ++ /* Write chunk bits */ ++ if(ok) { ++ nBytes = nBlocks * dev->chunkBitmapStride; ++ ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes); ++ } ++ return ok ? 1 : 0; ++ ++} ++ ++static int yaffs_ReadCheckpointDevice(yaffs_Device *dev) ++{ ++ yaffs_CheckpointDevice cp; ++ __u32 nBytes; ++ __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); ++ ++ int ok; ++ ++ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp)); ++ if(!ok) ++ return 0; ++ ++ if(cp.structType != sizeof(cp)) ++ return 0; ++ ++ ++ yaffs_CheckpointDeviceToDevice(dev,&cp); ++ ++ nBytes = nBlocks * sizeof(yaffs_BlockInfo); ++ ++ ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes); ++ ++ if(!ok) ++ return 0; ++ nBytes = nBlocks * dev->chunkBitmapStride; ++ ++ ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes); ++ ++ return ok ? 1 : 0; ++} ++ ++static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp, ++ yaffs_Object *obj) ++{ ++ ++ cp->objectId = obj->objectId; ++ cp->parentId = (obj->parent) ? obj->parent->objectId : 0; ++ cp->chunkId = obj->chunkId; ++ cp->variantType = obj->variantType; ++ cp->deleted = obj->deleted; ++ cp->softDeleted = obj->softDeleted; ++ cp->unlinked = obj->unlinked; ++ cp->fake = obj->fake; ++ cp->renameAllowed = obj->renameAllowed; ++ cp->unlinkAllowed = obj->unlinkAllowed; ++ cp->serial = obj->serial; ++ cp->nDataChunks = obj->nDataChunks; ++ ++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) ++ cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize; ++ else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) ++ cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId; ++} ++ ++static void yaffs_CheckpointObjectToObject( yaffs_Object *obj,yaffs_CheckpointObject *cp) ++{ ++ ++ yaffs_Object *parent; ++ ++ obj->objectId = cp->objectId; ++ ++ if(cp->parentId) ++ parent = yaffs_FindOrCreateObjectByNumber( ++ obj->myDev, ++ cp->parentId, ++ YAFFS_OBJECT_TYPE_DIRECTORY); ++ else ++ parent = NULL; ++ ++ if(parent) ++ yaffs_AddObjectToDirectory(parent, obj); ++ ++ obj->chunkId = cp->chunkId; ++ obj->variantType = cp->variantType; ++ obj->deleted = cp->deleted; ++ obj->softDeleted = cp->softDeleted; ++ obj->unlinked = cp->unlinked; ++ obj->fake = cp->fake; ++ obj->renameAllowed = cp->renameAllowed; ++ obj->unlinkAllowed = cp->unlinkAllowed; ++ obj->serial = cp->serial; ++ obj->nDataChunks = cp->nDataChunks; ++ ++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) ++ obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId; ++ else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) ++ obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId; ++ ++ if(obj->objectId >= YAFFS_NOBJECT_BUCKETS) ++ obj->lazyLoaded = 1; ++} ++ ++ ++ ++static int yaffs_CheckpointTnodeWorker(yaffs_Object * in, yaffs_Tnode * tn, ++ __u32 level, int chunkOffset) ++{ ++ int i; ++ yaffs_Device *dev = in->myDev; ++ int ok = 1; ++ int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8; ++ ++ if (tn) { ++ if (level > 0) { ++ ++ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){ ++ if (tn->internal[i]) { ++ ok = yaffs_CheckpointTnodeWorker(in, ++ tn->internal[i], ++ level - 1, ++ (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i); ++ } ++ } ++ } else if (level == 0) { ++ __u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS; ++ /* printf("write tnode at %d\n",baseOffset); */ ++ ok = (yaffs_CheckpointWrite(dev,&baseOffset,sizeof(baseOffset)) == sizeof(baseOffset)); ++ if(ok) ++ ok = (yaffs_CheckpointWrite(dev,tn,nTnodeBytes) == nTnodeBytes); ++ } ++ } ++ ++ return ok; ++ ++} ++ ++static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj) ++{ ++ __u32 endMarker = ~0; ++ int ok = 1; ++ ++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){ ++ ok = yaffs_CheckpointTnodeWorker(obj, ++ obj->variant.fileVariant.top, ++ obj->variant.fileVariant.topLevel, ++ 0); ++ if(ok) ++ ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) == ++ sizeof(endMarker)); ++ } ++ ++ return ok ? 1 : 0; ++} ++ ++static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj) ++{ ++ __u32 baseChunk; ++ int ok = 1; ++ yaffs_Device *dev = obj->myDev; ++ yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant; ++ yaffs_Tnode *tn; ++ int nread = 0; ++ ++ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk)); ++ ++ while(ok && (~baseChunk)){ ++ nread++; ++ /* Read level 0 tnode */ ++ ++ ++ /* printf("read tnode at %d\n",baseChunk); */ ++ tn = yaffs_GetTnodeRaw(dev); ++ if(tn) ++ ok = (yaffs_CheckpointRead(dev,tn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8) == ++ (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8); ++ else ++ ok = 0; ++ ++ if(tn && ok){ ++ ok = yaffs_AddOrFindLevel0Tnode(dev, ++ fileStructPtr, ++ baseChunk, ++ tn) ? 1 : 0; ++ ++ } ++ ++ if(ok) ++ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk)); ++ ++ } ++ ++ T(YAFFS_TRACE_CHECKPOINT,( ++ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), ++ nread,baseChunk,ok)); ++ ++ return ok ? 1 : 0; ++} ++ ++ ++static int yaffs_WriteCheckpointObjects(yaffs_Device *dev) ++{ ++ yaffs_Object *obj; ++ yaffs_CheckpointObject cp; ++ int i; ++ int ok = 1; ++ struct list_head *lh; ++ ++ ++ /* Iterate through the objects in each hash entry, ++ * dumping them to the checkpointing stream. ++ */ ++ ++ for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){ ++ list_for_each(lh, &dev->objectBucket[i].list) { ++ if (lh) { ++ obj = list_entry(lh, yaffs_Object, hashLink); ++ if (!obj->deferedFree) { ++ yaffs_ObjectToCheckpointObject(&cp,obj); ++ cp.structType = sizeof(cp); ++ ++ T(YAFFS_TRACE_CHECKPOINT,( ++ TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR), ++ cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj)); ++ ++ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp)); ++ ++ if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){ ++ ok = yaffs_WriteCheckpointTnodes(obj); ++ } ++ } ++ } ++ } ++ } ++ ++ /* Dump end of list */ ++ memset(&cp,0xFF,sizeof(yaffs_CheckpointObject)); ++ cp.structType = sizeof(cp); ++ ++ if(ok) ++ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp)); ++ ++ return ok ? 1 : 0; ++} ++ ++static int yaffs_ReadCheckpointObjects(yaffs_Device *dev) ++{ ++ yaffs_Object *obj; ++ yaffs_CheckpointObject cp; ++ int ok = 1; ++ int done = 0; ++ yaffs_Object *hardList = NULL; ++ ++ while(ok && !done) { ++ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp)); ++ if(cp.structType != sizeof(cp)) { ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("struct size %d instead of %d ok %d"TENDSTR), ++ cp.structType,sizeof(cp),ok)); ++ ok = 0; ++ } ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), ++ cp.objectId,cp.parentId,cp.variantType,cp.chunkId)); ++ ++ if(ok && cp.objectId == ~0) ++ done = 1; ++ else if(ok){ ++ obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType); ++ if(obj) { ++ yaffs_CheckpointObjectToObject(obj,&cp); ++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) { ++ ok = yaffs_ReadCheckpointTnodes(obj); ++ } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { ++ obj->hardLinks.next = ++ (struct list_head *) ++ hardList; ++ hardList = obj; ++ } ++ ++ } ++ } ++ } ++ ++ if(ok) ++ yaffs_HardlinkFixup(dev,hardList); ++ ++ return ok ? 1 : 0; ++} ++ ++static int yaffs_WriteCheckpointSum(yaffs_Device *dev) ++{ ++ __u32 checkpointSum; ++ int ok; ++ ++ yaffs_GetCheckpointSum(dev,&checkpointSum); ++ ++ ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum)); ++ ++ if(!ok) ++ return 0; ++ ++ return 1; ++} ++ ++static int yaffs_ReadCheckpointSum(yaffs_Device *dev) ++{ ++ __u32 checkpointSum0; ++ __u32 checkpointSum1; ++ int ok; ++ ++ yaffs_GetCheckpointSum(dev,&checkpointSum0); ++ ++ ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1)); ++ ++ if(!ok) ++ return 0; ++ ++ if(checkpointSum0 != checkpointSum1) ++ return 0; ++ ++ return 1; ++} ++ ++ ++static int yaffs_WriteCheckpointData(yaffs_Device *dev) ++{ ++ ++ int ok = 1; ++ ++ if(dev->skipCheckpointWrite || !dev->isYaffs2){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR))); ++ ok = 0; ++ } ++ ++ if(ok) ++ ok = yaffs_CheckpointOpen(dev,1); ++ ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR))); ++ ok = yaffs_WriteCheckpointValidityMarker(dev,1); ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint device" TENDSTR))); ++ ok = yaffs_WriteCheckpointDevice(dev); ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint objects" TENDSTR))); ++ ok = yaffs_WriteCheckpointObjects(dev); ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR))); ++ ok = yaffs_WriteCheckpointValidityMarker(dev,0); ++ } ++ ++ if(ok){ ++ ok = yaffs_WriteCheckpointSum(dev); ++ } ++ ++ ++ if(!yaffs_CheckpointClose(dev)) ++ ok = 0; ++ ++ if(ok) ++ dev->isCheckpointed = 1; ++ else ++ dev->isCheckpointed = 0; ++ ++ return dev->isCheckpointed; ++} ++ ++static int yaffs_ReadCheckpointData(yaffs_Device *dev) ++{ ++ int ok = 1; ++ ++ if(dev->skipCheckpointRead || !dev->isYaffs2){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR))); ++ ok = 0; ++ } ++ ++ if(ok) ++ ok = yaffs_CheckpointOpen(dev,0); /* open for read */ ++ ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR))); ++ ok = yaffs_ReadCheckpointValidityMarker(dev,1); ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint device" TENDSTR))); ++ ok = yaffs_ReadCheckpointDevice(dev); ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR))); ++ ok = yaffs_ReadCheckpointObjects(dev); ++ } ++ if(ok){ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR))); ++ ok = yaffs_ReadCheckpointValidityMarker(dev,0); ++ } ++ ++ if(ok){ ++ ok = yaffs_ReadCheckpointSum(dev); ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok)); ++ } ++ ++ if(!yaffs_CheckpointClose(dev)) ++ ok = 0; ++ ++ if(ok) ++ dev->isCheckpointed = 1; ++ else ++ dev->isCheckpointed = 0; ++ ++ return ok ? 1 : 0; ++ ++} ++ ++static void yaffs_InvalidateCheckpoint(yaffs_Device *dev) ++{ ++ if(dev->isCheckpointed || ++ dev->blocksInCheckpoint > 0){ ++ dev->isCheckpointed = 0; ++ yaffs_CheckpointInvalidateStream(dev); ++ if(dev->superBlock && dev->markSuperBlockDirty) ++ dev->markSuperBlockDirty(dev->superBlock); ++ } ++} ++ ++ ++int yaffs_CheckpointSave(yaffs_Device *dev) ++{ ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ ++ yaffs_VerifyObjects(dev); ++ yaffs_VerifyBlocks(dev); ++ yaffs_VerifyFreeChunks(dev); ++ ++ if(!dev->isCheckpointed) { ++ yaffs_InvalidateCheckpoint(dev); ++ yaffs_WriteCheckpointData(dev); ++ } ++ ++ T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ ++ return dev->isCheckpointed; ++} ++ ++int yaffs_CheckpointRestore(yaffs_Device *dev) ++{ ++ int retval; ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ ++ retval = yaffs_ReadCheckpointData(dev); ++ ++ if(dev->isCheckpointed){ ++ yaffs_VerifyObjects(dev); ++ yaffs_VerifyBlocks(dev); ++ yaffs_VerifyFreeChunks(dev); ++ } ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ ++ return retval; ++} ++ ++/*--------------------- File read/write ------------------------ ++ * Read and write have very similar structures. ++ * In general the read/write has three parts to it ++ * An incomplete chunk to start with (if the read/write is not chunk-aligned) ++ * Some complete chunks ++ * An incomplete chunk to end off with ++ * ++ * Curve-balls: the first chunk might also be the last chunk. ++ */ ++ ++int yaffs_ReadDataFromFile(yaffs_Object * in, __u8 * buffer, loff_t offset, ++ int nBytes) ++{ ++ ++ int chunk; ++ int start; ++ int nToCopy; ++ int n = nBytes; ++ int nDone = 0; ++ yaffs_ChunkCache *cache; ++ ++ yaffs_Device *dev; ++ ++ dev = in->myDev; ++ ++ while (n > 0) { ++ //chunk = offset / dev->nDataBytesPerChunk + 1; ++ //start = offset % dev->nDataBytesPerChunk; ++ yaffs_AddrToChunk(dev,offset,&chunk,&start); ++ chunk++; ++ ++ /* OK now check for the curveball where the start and end are in ++ * the same chunk. ++ */ ++ if ((start + n) < dev->nDataBytesPerChunk) { ++ nToCopy = n; ++ } else { ++ nToCopy = dev->nDataBytesPerChunk - start; ++ } ++ ++ cache = yaffs_FindChunkCache(in, chunk); ++ ++ /* If the chunk is already in the cache or it is less than a whole chunk ++ * then use the cache (if there is caching) ++ * else bypass the cache. ++ */ ++ if (cache || nToCopy != dev->nDataBytesPerChunk) { ++ if (dev->nShortOpCaches > 0) { ++ ++ /* If we can't find the data in the cache, then load it up. */ ++ ++ if (!cache) { ++ cache = yaffs_GrabChunkCache(in->myDev); ++ cache->object = in; ++ cache->chunkId = chunk; ++ cache->dirty = 0; ++ cache->locked = 0; ++ yaffs_ReadChunkDataFromObject(in, chunk, ++ cache-> ++ data); ++ cache->nBytes = 0; ++ } ++ ++ yaffs_UseChunkCache(dev, cache, 0); ++ ++ cache->locked = 1; ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_UnlockYAFFS(TRUE); ++#endif ++ memcpy(buffer, &cache->data[start], nToCopy); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_LockYAFFS(TRUE); ++#endif ++ cache->locked = 0; ++ } else { ++ /* Read into the local buffer then copy..*/ ++ ++ __u8 *localBuffer = ++ yaffs_GetTempBuffer(dev, __LINE__); ++ yaffs_ReadChunkDataFromObject(in, chunk, ++ localBuffer); ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_UnlockYAFFS(TRUE); ++#endif ++ memcpy(buffer, &localBuffer[start], nToCopy); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_LockYAFFS(TRUE); ++#endif ++ yaffs_ReleaseTempBuffer(dev, localBuffer, ++ __LINE__); ++ } ++ ++ } else { ++#ifdef CONFIG_YAFFS_WINCE ++ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ /* Under WinCE can't do direct transfer. Need to use a local buffer. ++ * This is because we otherwise screw up WinCE's memory mapper ++ */ ++ yaffs_ReadChunkDataFromObject(in, chunk, localBuffer); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_UnlockYAFFS(TRUE); ++#endif ++ memcpy(buffer, localBuffer, dev->nDataBytesPerChunk); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_LockYAFFS(TRUE); ++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); ++#endif ++ ++#else ++ /* A full chunk. Read directly into the supplied buffer. */ ++ yaffs_ReadChunkDataFromObject(in, chunk, buffer); ++#endif ++ } ++ ++ n -= nToCopy; ++ offset += nToCopy; ++ buffer += nToCopy; ++ nDone += nToCopy; ++ ++ } ++ ++ return nDone; ++} ++ ++int yaffs_WriteDataToFile(yaffs_Object * in, const __u8 * buffer, loff_t offset, ++ int nBytes, int writeThrough) ++{ ++ ++ int chunk; ++ int start; ++ int nToCopy; ++ int n = nBytes; ++ int nDone = 0; ++ int nToWriteBack; ++ int startOfWrite = offset; ++ int chunkWritten = 0; ++ int nBytesRead; ++ ++ yaffs_Device *dev; ++ ++ dev = in->myDev; ++ ++ while (n > 0 && chunkWritten >= 0) { ++ //chunk = offset / dev->nDataBytesPerChunk + 1; ++ //start = offset % dev->nDataBytesPerChunk; ++ yaffs_AddrToChunk(dev,offset,&chunk,&start); ++ chunk++; ++ ++ /* OK now check for the curveball where the start and end are in ++ * the same chunk. ++ */ ++ ++ if ((start + n) < dev->nDataBytesPerChunk) { ++ nToCopy = n; ++ ++ /* Now folks, to calculate how many bytes to write back.... ++ * If we're overwriting and not writing to then end of file then ++ * we need to write back as much as was there before. ++ */ ++ ++ nBytesRead = ++ in->variant.fileVariant.fileSize - ++ ((chunk - 1) * dev->nDataBytesPerChunk); ++ ++ if (nBytesRead > dev->nDataBytesPerChunk) { ++ nBytesRead = dev->nDataBytesPerChunk; ++ } ++ ++ nToWriteBack = ++ (nBytesRead > ++ (start + n)) ? nBytesRead : (start + n); ++ ++ } else { ++ nToCopy = dev->nDataBytesPerChunk - start; ++ nToWriteBack = dev->nDataBytesPerChunk; ++ } ++ ++ if (nToCopy != dev->nDataBytesPerChunk) { ++ /* An incomplete start or end chunk (or maybe both start and end chunk) */ ++ if (dev->nShortOpCaches > 0) { ++ yaffs_ChunkCache *cache; ++ /* If we can't find the data in the cache, then load the cache */ ++ cache = yaffs_FindChunkCache(in, chunk); ++ ++ if (!cache ++ && yaffs_CheckSpaceForAllocation(in-> ++ myDev)) { ++ cache = yaffs_GrabChunkCache(in->myDev); ++ cache->object = in; ++ cache->chunkId = chunk; ++ cache->dirty = 0; ++ cache->locked = 0; ++ yaffs_ReadChunkDataFromObject(in, chunk, ++ cache-> ++ data); ++ } ++ else if(cache && ++ !cache->dirty && ++ !yaffs_CheckSpaceForAllocation(in->myDev)){ ++ /* Drop the cache if it was a read cache item and ++ * no space check has been made for it. ++ */ ++ cache = NULL; ++ } ++ ++ if (cache) { ++ yaffs_UseChunkCache(dev, cache, 1); ++ cache->locked = 1; ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_UnlockYAFFS(TRUE); ++#endif ++ ++ memcpy(&cache->data[start], buffer, ++ nToCopy); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_LockYAFFS(TRUE); ++#endif ++ cache->locked = 0; ++ cache->nBytes = nToWriteBack; ++ ++ if (writeThrough) { ++ chunkWritten = ++ yaffs_WriteChunkDataToObject ++ (cache->object, ++ cache->chunkId, ++ cache->data, cache->nBytes, ++ 1); ++ cache->dirty = 0; ++ } ++ ++ } else { ++ chunkWritten = -1; /* fail the write */ ++ } ++ } else { ++ /* An incomplete start or end chunk (or maybe both start and end chunk) ++ * Read into the local buffer then copy, then copy over and write back. ++ */ ++ ++ __u8 *localBuffer = ++ yaffs_GetTempBuffer(dev, __LINE__); ++ ++ yaffs_ReadChunkDataFromObject(in, chunk, ++ localBuffer); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_UnlockYAFFS(TRUE); ++#endif ++ ++ memcpy(&localBuffer[start], buffer, nToCopy); ++ ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_LockYAFFS(TRUE); ++#endif ++ chunkWritten = ++ yaffs_WriteChunkDataToObject(in, chunk, ++ localBuffer, ++ nToWriteBack, ++ 0); ++ ++ yaffs_ReleaseTempBuffer(dev, localBuffer, ++ __LINE__); ++ ++ } ++ ++ } else { ++ ++#ifdef CONFIG_YAFFS_WINCE ++ /* Under WinCE can't do direct transfer. Need to use a local buffer. ++ * This is because we otherwise screw up WinCE's memory mapper ++ */ ++ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_UnlockYAFFS(TRUE); ++#endif ++ memcpy(localBuffer, buffer, dev->nDataBytesPerChunk); ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_LockYAFFS(TRUE); ++#endif ++ chunkWritten = ++ yaffs_WriteChunkDataToObject(in, chunk, localBuffer, ++ dev->nDataBytesPerChunk, ++ 0); ++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); ++#else ++ /* A full chunk. Write directly from the supplied buffer. */ ++ chunkWritten = ++ yaffs_WriteChunkDataToObject(in, chunk, buffer, ++ dev->nDataBytesPerChunk, ++ 0); ++#endif ++ /* Since we've overwritten the cached data, we better invalidate it. */ ++ yaffs_InvalidateChunkCache(in, chunk); ++ } ++ ++ if (chunkWritten >= 0) { ++ n -= nToCopy; ++ offset += nToCopy; ++ buffer += nToCopy; ++ nDone += nToCopy; ++ } ++ ++ } ++ ++ /* Update file object */ ++ ++ if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) { ++ in->variant.fileVariant.fileSize = (startOfWrite + nDone); ++ } ++ ++ in->dirty = 1; ++ ++ return nDone; ++} ++ ++ ++/* ---------------------- File resizing stuff ------------------ */ ++ ++static void yaffs_PruneResizedChunks(yaffs_Object * in, int newSize) ++{ ++ ++ yaffs_Device *dev = in->myDev; ++ int oldFileSize = in->variant.fileVariant.fileSize; ++ ++ int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk; ++ ++ int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) / ++ dev->nDataBytesPerChunk; ++ int i; ++ int chunkId; ++ ++ /* Delete backwards so that we don't end up with holes if ++ * power is lost part-way through the operation. ++ */ ++ for (i = lastDel; i >= startDel; i--) { ++ /* NB this could be optimised somewhat, ++ * eg. could retrieve the tags and write them without ++ * using yaffs_DeleteChunk ++ */ ++ ++ chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL); ++ if (chunkId > 0) { ++ if (chunkId < ++ (dev->internalStartBlock * dev->nChunksPerBlock) ++ || chunkId >= ++ ((dev->internalEndBlock + ++ 1) * dev->nChunksPerBlock)) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("Found daft chunkId %d for %d" TENDSTR), ++ chunkId, i)); ++ } else { ++ in->nDataChunks--; ++ yaffs_DeleteChunk(dev, chunkId, 1, __LINE__); ++ } ++ } ++ } ++ ++} ++ ++int yaffs_ResizeFile(yaffs_Object * in, loff_t newSize) ++{ ++ ++ int oldFileSize = in->variant.fileVariant.fileSize; ++ int newSizeOfPartialChunk; ++ int newFullChunks; ++ ++ yaffs_Device *dev = in->myDev; ++ ++ yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); ++ ++ yaffs_FlushFilesChunkCache(in); ++ yaffs_InvalidateWholeChunkCache(in); ++ ++ yaffs_CheckGarbageCollection(dev); ++ ++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { ++ return yaffs_GetFileSize(in); ++ } ++ ++ if (newSize == oldFileSize) { ++ return oldFileSize; ++ } ++ ++ if (newSize < oldFileSize) { ++ ++ yaffs_PruneResizedChunks(in, newSize); ++ ++ if (newSizeOfPartialChunk != 0) { ++ int lastChunk = 1 + newFullChunks; ++ ++ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ /* Got to read and rewrite the last chunk with its new size and zero pad */ ++ yaffs_ReadChunkDataFromObject(in, lastChunk, ++ localBuffer); ++ ++ memset(localBuffer + newSizeOfPartialChunk, 0, ++ dev->nDataBytesPerChunk - newSizeOfPartialChunk); ++ ++ yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer, ++ newSizeOfPartialChunk, 1); ++ ++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); ++ } ++ ++ in->variant.fileVariant.fileSize = newSize; ++ ++ yaffs_PruneFileStructure(dev, &in->variant.fileVariant); ++ } else { ++ /* newsSize > oldFileSize */ ++ in->variant.fileVariant.fileSize = newSize; ++ } ++ ++ ++ ++ /* Write a new object header. ++ * show we've shrunk the file, if need be ++ * Do this only if the file is not in the deleted directories. ++ */ ++ if (in->parent->objectId != YAFFS_OBJECTID_UNLINKED && ++ in->parent->objectId != YAFFS_OBJECTID_DELETED) { ++ yaffs_UpdateObjectHeader(in, NULL, 0, ++ (newSize < oldFileSize) ? 1 : 0, 0); ++ } ++ ++ return newSize; ++} ++ ++loff_t yaffs_GetFileSize(yaffs_Object * obj) ++{ ++ obj = yaffs_GetEquivalentObject(obj); ++ ++ switch (obj->variantType) { ++ case YAFFS_OBJECT_TYPE_FILE: ++ return obj->variant.fileVariant.fileSize; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ return yaffs_strlen(obj->variant.symLinkVariant.alias); ++ default: ++ return 0; ++ } ++} ++ ++ ++ ++int yaffs_FlushFile(yaffs_Object * in, int updateTime) ++{ ++ int retVal; ++ if (in->dirty) { ++ yaffs_FlushFilesChunkCache(in); ++ if (updateTime) { ++#ifdef CONFIG_YAFFS_WINCE ++ yfsd_WinFileTimeNow(in->win_mtime); ++#else ++ ++ in->yst_mtime = Y_CURRENT_TIME; ++ ++#endif ++ } ++ ++ retVal = ++ (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >= ++ 0) ? YAFFS_OK : YAFFS_FAIL; ++ } else { ++ retVal = YAFFS_OK; ++ } ++ ++ return retVal; ++ ++} ++ ++static int yaffs_DoGenericObjectDeletion(yaffs_Object * in) ++{ ++ ++ /* First off, invalidate the file's data in the cache, without flushing. */ ++ yaffs_InvalidateWholeChunkCache(in); ++ ++ if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) { ++ /* Move to the unlinked directory so we have a record that it was deleted. */ ++ yaffs_ChangeObjectName(in, in->myDev->deletedDir,"deleted", 0, 0); ++ ++ } ++ ++ yaffs_RemoveObjectFromDirectory(in); ++ yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__); ++ in->chunkId = -1; ++ ++ yaffs_FreeObject(in); ++ return YAFFS_OK; ++ ++} ++ ++/* yaffs_DeleteFile deletes the whole file data ++ * and the inode associated with the file. ++ * It does not delete the links associated with the file. ++ */ ++static int yaffs_UnlinkFile(yaffs_Object * in) ++{ ++ ++ int retVal; ++ int immediateDeletion = 0; ++ ++ if (1) { ++#ifdef __KERNEL__ ++ if (!in->myInode) { ++ immediateDeletion = 1; ++ ++ } ++#else ++ if (in->inUse <= 0) { ++ immediateDeletion = 1; ++ ++ } ++#endif ++ if (immediateDeletion) { ++ retVal = ++ yaffs_ChangeObjectName(in, in->myDev->deletedDir, ++ "deleted", 0, 0); ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("yaffs: immediate deletion of file %d" TENDSTR), ++ in->objectId)); ++ in->deleted = 1; ++ in->myDev->nDeletedFiles++; ++ if (0 && in->myDev->isYaffs2) { ++ yaffs_ResizeFile(in, 0); ++ } ++ yaffs_SoftDeleteFile(in); ++ } else { ++ retVal = ++ yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, ++ "unlinked", 0, 0); ++ } ++ ++ } ++ return retVal; ++} ++ ++int yaffs_DeleteFile(yaffs_Object * in) ++{ ++ int retVal = YAFFS_OK; ++ ++ if (in->nDataChunks > 0) { ++ /* Use soft deletion if there is data in the file */ ++ if (!in->unlinked) { ++ retVal = yaffs_UnlinkFile(in); ++ } ++ if (retVal == YAFFS_OK && in->unlinked && !in->deleted) { ++ in->deleted = 1; ++ in->myDev->nDeletedFiles++; ++ yaffs_SoftDeleteFile(in); ++ } ++ return in->deleted ? YAFFS_OK : YAFFS_FAIL; ++ } else { ++ /* The file has no data chunks so we toss it immediately */ ++ yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top); ++ in->variant.fileVariant.top = NULL; ++ yaffs_DoGenericObjectDeletion(in); ++ ++ return YAFFS_OK; ++ } ++} ++ ++static int yaffs_DeleteDirectory(yaffs_Object * in) ++{ ++ /* First check that the directory is empty. */ ++ if (list_empty(&in->variant.directoryVariant.children)) { ++ return yaffs_DoGenericObjectDeletion(in); ++ } ++ ++ return YAFFS_FAIL; ++ ++} ++ ++static int yaffs_DeleteSymLink(yaffs_Object * in) ++{ ++ YFREE(in->variant.symLinkVariant.alias); ++ ++ return yaffs_DoGenericObjectDeletion(in); ++} ++ ++static int yaffs_DeleteHardLink(yaffs_Object * in) ++{ ++ /* remove this hardlink from the list assocaited with the equivalent ++ * object ++ */ ++ list_del(&in->hardLinks); ++ return yaffs_DoGenericObjectDeletion(in); ++} ++ ++static void yaffs_DestroyObject(yaffs_Object * obj) ++{ ++ switch (obj->variantType) { ++ case YAFFS_OBJECT_TYPE_FILE: ++ yaffs_DeleteFile(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ yaffs_DeleteDirectory(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ yaffs_DeleteSymLink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ yaffs_DeleteHardLink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ yaffs_DoGenericObjectDeletion(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ break; /* should not happen. */ ++ } ++} ++ ++static int yaffs_UnlinkWorker(yaffs_Object * obj) ++{ ++ ++ if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { ++ return yaffs_DeleteHardLink(obj); ++ } else if (!list_empty(&obj->hardLinks)) { ++ /* Curve ball: We're unlinking an object that has a hardlink. ++ * ++ * This problem arises because we are not strictly following ++ * The Linux link/inode model. ++ * ++ * We can't really delete the object. ++ * Instead, we do the following: ++ * - Select a hardlink. ++ * - Unhook it from the hard links ++ * - Unhook it from its parent directory (so that the rename can work) ++ * - Rename the object to the hardlink's name. ++ * - Delete the hardlink ++ */ ++ ++ yaffs_Object *hl; ++ int retVal; ++ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; ++ ++ hl = list_entry(obj->hardLinks.next, yaffs_Object, hardLinks); ++ ++ list_del_init(&hl->hardLinks); ++ list_del_init(&hl->siblings); ++ ++ yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1); ++ ++ retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0); ++ ++ if (retVal == YAFFS_OK) { ++ retVal = yaffs_DoGenericObjectDeletion(hl); ++ } ++ return retVal; ++ ++ } else { ++ switch (obj->variantType) { ++ case YAFFS_OBJECT_TYPE_FILE: ++ return yaffs_UnlinkFile(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ return yaffs_DeleteDirectory(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ return yaffs_DeleteSymLink(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ return yaffs_DoGenericObjectDeletion(obj); ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ default: ++ return YAFFS_FAIL; ++ } ++ } ++} ++ ++ ++static int yaffs_UnlinkObject( yaffs_Object *obj) ++{ ++ ++ if (obj && obj->unlinkAllowed) { ++ return yaffs_UnlinkWorker(obj); ++ } ++ ++ return YAFFS_FAIL; ++ ++} ++int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name) ++{ ++ yaffs_Object *obj; ++ ++ obj = yaffs_FindObjectByName(dir, name); ++ return yaffs_UnlinkObject(obj); ++} ++ ++/*----------------------- Initialisation Scanning ---------------------- */ ++ ++static void yaffs_HandleShadowedObject(yaffs_Device * dev, int objId, ++ int backwardScanning) ++{ ++ yaffs_Object *obj; ++ ++ if (!backwardScanning) { ++ /* Handle YAFFS1 forward scanning case ++ * For YAFFS1 we always do the deletion ++ */ ++ ++ } else { ++ /* Handle YAFFS2 case (backward scanning) ++ * If the shadowed object exists then ignore. ++ */ ++ if (yaffs_FindObjectByNumber(dev, objId)) { ++ return; ++ } ++ } ++ ++ /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc. ++ * We put it in unlinked dir to be cleaned up after the scanning ++ */ ++ obj = ++ yaffs_FindOrCreateObjectByNumber(dev, objId, ++ YAFFS_OBJECT_TYPE_FILE); ++ yaffs_AddObjectToDirectory(dev->unlinkedDir, obj); ++ obj->variant.fileVariant.shrinkSize = 0; ++ obj->valid = 1; /* So that we don't read any other info for this file */ ++ ++} ++ ++typedef struct { ++ int seq; ++ int block; ++} yaffs_BlockIndex; ++ ++ ++static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList) ++{ ++ yaffs_Object *hl; ++ yaffs_Object *in; ++ ++ while (hardList) { ++ hl = hardList; ++ hardList = (yaffs_Object *) (hardList->hardLinks.next); ++ ++ in = yaffs_FindObjectByNumber(dev, ++ hl->variant.hardLinkVariant. ++ equivalentObjectId); ++ ++ if (in) { ++ /* Add the hardlink pointers */ ++ hl->variant.hardLinkVariant.equivalentObject = in; ++ list_add(&hl->hardLinks, &in->hardLinks); ++ } else { ++ /* Todo Need to report/handle this better. ++ * Got a problem... hardlink to a non-existant object ++ */ ++ hl->variant.hardLinkVariant.equivalentObject = NULL; ++ INIT_LIST_HEAD(&hl->hardLinks); ++ ++ } ++ ++ } ++ ++} ++ ++ ++ ++ ++ ++static int ybicmp(const void *a, const void *b){ ++ register int aseq = ((yaffs_BlockIndex *)a)->seq; ++ register int bseq = ((yaffs_BlockIndex *)b)->seq; ++ register int ablock = ((yaffs_BlockIndex *)a)->block; ++ register int bblock = ((yaffs_BlockIndex *)b)->block; ++ if( aseq == bseq ) ++ return ablock - bblock; ++ else ++ return aseq - bseq; ++ ++} ++ ++static int yaffs_Scan(yaffs_Device * dev) ++{ ++ yaffs_ExtendedTags tags; ++ int blk; ++ int blockIterator; ++ int startIterator; ++ int endIterator; ++ int nBlocksToScan = 0; ++ int result; ++ ++ int chunk; ++ int c; ++ int deleted; ++ yaffs_BlockState state; ++ yaffs_Object *hardList = NULL; ++ yaffs_BlockInfo *bi; ++ int sequenceNumber; ++ yaffs_ObjectHeader *oh; ++ yaffs_Object *in; ++ yaffs_Object *parent; ++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; ++ ++ int alloc_failed = 0; ++ ++ ++ __u8 *chunkData; ++ ++ yaffs_BlockIndex *blockIndex = NULL; ++ ++ if (dev->isYaffs2) { ++ T(YAFFS_TRACE_SCAN, ++ (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ //TODO Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format. ++ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR), ++ dev->internalStartBlock, dev->internalEndBlock)); ++ ++ chunkData = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; ++ ++ if (dev->isYaffs2) { ++ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); ++ if(!blockIndex) ++ return YAFFS_FAIL; ++ } ++ ++ /* Scan all the blocks to determine their state */ ++ for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { ++ bi = yaffs_GetBlockInfo(dev, blk); ++ yaffs_ClearChunkBits(dev, blk); ++ bi->pagesInUse = 0; ++ bi->softDeletions = 0; ++ ++ yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); ++ ++ bi->blockState = state; ++ bi->sequenceNumber = sequenceNumber; ++ ++ T(YAFFS_TRACE_SCAN_DEBUG, ++ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, ++ state, sequenceNumber)); ++ ++ if (state == YAFFS_BLOCK_STATE_DEAD) { ++ T(YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("block %d is bad" TENDSTR), blk)); ++ } else if (state == YAFFS_BLOCK_STATE_EMPTY) { ++ T(YAFFS_TRACE_SCAN_DEBUG, ++ (TSTR("Block empty " TENDSTR))); ++ dev->nErasedBlocks++; ++ dev->nFreeChunks += dev->nChunksPerBlock; ++ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { ++ ++ /* Determine the highest sequence number */ ++ if (dev->isYaffs2 && ++ sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER && ++ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { ++ ++ blockIndex[nBlocksToScan].seq = sequenceNumber; ++ blockIndex[nBlocksToScan].block = blk; ++ ++ nBlocksToScan++; ++ ++ if (sequenceNumber >= dev->sequenceNumber) { ++ dev->sequenceNumber = sequenceNumber; ++ } ++ } else if (dev->isYaffs2) { ++ /* TODO: Nasty sequence number! */ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR ++ ("Block scanning block %d has bad sequence number %d" ++ TENDSTR), blk, sequenceNumber)); ++ ++ } ++ } ++ } ++ ++ /* Sort the blocks ++ * Dungy old bubble sort for now... ++ */ ++ if (dev->isYaffs2) { ++ yaffs_BlockIndex temp; ++ int i; ++ int j; ++ ++ for (i = 0; i < nBlocksToScan; i++) ++ for (j = i + 1; j < nBlocksToScan; j++) ++ if (blockIndex[i].seq > blockIndex[j].seq) { ++ temp = blockIndex[j]; ++ blockIndex[j] = blockIndex[i]; ++ blockIndex[i] = temp; ++ } ++ } ++ ++ /* Now scan the blocks looking at the data. */ ++ if (dev->isYaffs2) { ++ startIterator = 0; ++ endIterator = nBlocksToScan - 1; ++ T(YAFFS_TRACE_SCAN_DEBUG, ++ (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); ++ } else { ++ startIterator = dev->internalStartBlock; ++ endIterator = dev->internalEndBlock; ++ } ++ ++ /* For each block.... */ ++ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; ++ blockIterator++) { ++ ++ if (dev->isYaffs2) { ++ /* get the block to scan in the correct order */ ++ blk = blockIndex[blockIterator].block; ++ } else { ++ blk = blockIterator; ++ } ++ ++ bi = yaffs_GetBlockInfo(dev, blk); ++ state = bi->blockState; ++ ++ deleted = 0; ++ ++ /* For each chunk in each block that needs scanning....*/ ++ for (c = 0; !alloc_failed && c < dev->nChunksPerBlock && ++ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { ++ /* Read the tags and decide what to do */ ++ chunk = blk * dev->nChunksPerBlock + c; ++ ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, ++ &tags); ++ ++ /* Let's have a good look at this chunk... */ ++ ++ if (!dev->isYaffs2 && tags.chunkDeleted) { ++ /* YAFFS1 only... ++ * A deleted chunk ++ */ ++ deleted++; ++ dev->nFreeChunks++; ++ /*T((" %d %d deleted\n",blk,c)); */ ++ } else if (!tags.chunkUsed) { ++ /* An unassigned chunk in the block ++ * This means that either the block is empty or ++ * this is the one being allocated from ++ */ ++ ++ if (c == 0) { ++ /* We're looking at the first chunk in the block so the block is unused */ ++ state = YAFFS_BLOCK_STATE_EMPTY; ++ dev->nErasedBlocks++; ++ } else { ++ /* this is the block being allocated from */ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR ++ (" Allocating from %d %d" TENDSTR), ++ blk, c)); ++ state = YAFFS_BLOCK_STATE_ALLOCATING; ++ dev->allocationBlock = blk; ++ dev->allocationPage = c; ++ dev->allocationBlockFinder = blk; ++ /* Set it to here to encourage the allocator to go forth from here. */ ++ ++ /* Yaffs2 sanity check: ++ * This should be the one with the highest sequence number ++ */ ++ if (dev->isYaffs2 ++ && (dev->sequenceNumber != ++ bi->sequenceNumber)) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("yaffs: Allocation block %d was not highest sequence id:" ++ " block seq = %d, dev seq = %d" ++ TENDSTR), blk,bi->sequenceNumber,dev->sequenceNumber)); ++ } ++ } ++ ++ dev->nFreeChunks += (dev->nChunksPerBlock - c); ++ } else if (tags.chunkId > 0) { ++ /* chunkId > 0 so it is a data chunk... */ ++ unsigned int endpos; ++ ++ yaffs_SetChunkBit(dev, blk, c); ++ bi->pagesInUse++; ++ ++ in = yaffs_FindOrCreateObjectByNumber(dev, ++ tags. ++ objectId, ++ YAFFS_OBJECT_TYPE_FILE); ++ /* PutChunkIntoFile checks for a clash (two data chunks with ++ * the same chunkId). ++ */ ++ ++ if(!in) ++ alloc_failed = 1; ++ ++ if(in){ ++ if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1)) ++ alloc_failed = 1; ++ } ++ ++ endpos = ++ (tags.chunkId - 1) * dev->nDataBytesPerChunk + ++ tags.byteCount; ++ if (in && ++ in->variantType == YAFFS_OBJECT_TYPE_FILE ++ && in->variant.fileVariant.scannedFileSize < ++ endpos) { ++ in->variant.fileVariant. ++ scannedFileSize = endpos; ++ if (!dev->useHeaderFileSize) { ++ in->variant.fileVariant. ++ fileSize = ++ in->variant.fileVariant. ++ scannedFileSize; ++ } ++ ++ } ++ /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */ ++ } else { ++ /* chunkId == 0, so it is an ObjectHeader. ++ * Thus, we read in the object header and make the object ++ */ ++ yaffs_SetChunkBit(dev, blk, c); ++ bi->pagesInUse++; ++ ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, ++ chunkData, ++ NULL); ++ ++ oh = (yaffs_ObjectHeader *) chunkData; ++ ++ in = yaffs_FindObjectByNumber(dev, ++ tags.objectId); ++ if (in && in->variantType != oh->type) { ++ /* This should not happen, but somehow ++ * Wev'e ended up with an objectId that has been reused but not yet ++ * deleted, and worse still it has changed type. Delete the old object. ++ */ ++ ++ yaffs_DestroyObject(in); ++ ++ in = 0; ++ } ++ ++ in = yaffs_FindOrCreateObjectByNumber(dev, ++ tags. ++ objectId, ++ oh->type); ++ ++ if(!in) ++ alloc_failed = 1; ++ ++ if (in && oh->shadowsObject > 0) { ++ yaffs_HandleShadowedObject(dev, ++ oh-> ++ shadowsObject, ++ 0); ++ } ++ ++ if (in && in->valid) { ++ /* We have already filled this one. We have a duplicate and need to resolve it. */ ++ ++ unsigned existingSerial = in->serial; ++ unsigned newSerial = tags.serialNumber; ++ ++ if (dev->isYaffs2 || ++ ((existingSerial + 1) & 3) == ++ newSerial) { ++ /* Use new one - destroy the exisiting one */ ++ yaffs_DeleteChunk(dev, ++ in->chunkId, ++ 1, __LINE__); ++ in->valid = 0; ++ } else { ++ /* Use existing - destroy this one. */ ++ yaffs_DeleteChunk(dev, chunk, 1, ++ __LINE__); ++ } ++ } ++ ++ if (in && !in->valid && ++ (tags.objectId == YAFFS_OBJECTID_ROOT || ++ tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { ++ /* We only load some info, don't fiddle with directory structure */ ++ in->valid = 1; ++ in->variantType = oh->type; ++ ++ in->yst_mode = oh->yst_mode; ++#ifdef CONFIG_YAFFS_WINCE ++ in->win_atime[0] = oh->win_atime[0]; ++ in->win_ctime[0] = oh->win_ctime[0]; ++ in->win_mtime[0] = oh->win_mtime[0]; ++ in->win_atime[1] = oh->win_atime[1]; ++ in->win_ctime[1] = oh->win_ctime[1]; ++ in->win_mtime[1] = oh->win_mtime[1]; ++#else ++ in->yst_uid = oh->yst_uid; ++ in->yst_gid = oh->yst_gid; ++ in->yst_atime = oh->yst_atime; ++ in->yst_mtime = oh->yst_mtime; ++ in->yst_ctime = oh->yst_ctime; ++ in->yst_rdev = oh->yst_rdev; ++#endif ++ in->chunkId = chunk; ++ ++ } else if (in && !in->valid) { ++ /* we need to load this info */ ++ ++ in->valid = 1; ++ in->variantType = oh->type; ++ ++ in->yst_mode = oh->yst_mode; ++#ifdef CONFIG_YAFFS_WINCE ++ in->win_atime[0] = oh->win_atime[0]; ++ in->win_ctime[0] = oh->win_ctime[0]; ++ in->win_mtime[0] = oh->win_mtime[0]; ++ in->win_atime[1] = oh->win_atime[1]; ++ in->win_ctime[1] = oh->win_ctime[1]; ++ in->win_mtime[1] = oh->win_mtime[1]; ++#else ++ in->yst_uid = oh->yst_uid; ++ in->yst_gid = oh->yst_gid; ++ in->yst_atime = oh->yst_atime; ++ in->yst_mtime = oh->yst_mtime; ++ in->yst_ctime = oh->yst_ctime; ++ in->yst_rdev = oh->yst_rdev; ++#endif ++ in->chunkId = chunk; ++ ++ yaffs_SetObjectName(in, oh->name); ++ in->dirty = 0; ++ ++ /* directory stuff... ++ * hook up to parent ++ */ ++ ++ parent = ++ yaffs_FindOrCreateObjectByNumber ++ (dev, oh->parentObjectId, ++ YAFFS_OBJECT_TYPE_DIRECTORY); ++ if (parent->variantType == ++ YAFFS_OBJECT_TYPE_UNKNOWN) { ++ /* Set up as a directory */ ++ parent->variantType = ++ YAFFS_OBJECT_TYPE_DIRECTORY; ++ INIT_LIST_HEAD(&parent->variant. ++ directoryVariant. ++ children); ++ } else if (parent->variantType != ++ YAFFS_OBJECT_TYPE_DIRECTORY) ++ { ++ /* Hoosterman, another problem.... ++ * We're trying to use a non-directory as a directory ++ */ ++ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs tragedy: attempting to use non-directory as" ++ " a directory in scan. Put in lost+found." ++ TENDSTR))); ++ parent = dev->lostNFoundDir; ++ } ++ ++ yaffs_AddObjectToDirectory(parent, in); ++ ++ if (0 && (parent == dev->deletedDir || ++ parent == dev->unlinkedDir)) { ++ in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ ++ dev->nDeletedFiles++; ++ } ++ /* Note re hardlinks. ++ * Since we might scan a hardlink before its equivalent object is scanned ++ * we put them all in a list. ++ * After scanning is complete, we should have all the objects, so we run through this ++ * list and fix up all the chains. ++ */ ++ ++ switch (in->variantType) { ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ /* Todo got a problem */ ++ break; ++ case YAFFS_OBJECT_TYPE_FILE: ++ if (dev->isYaffs2 ++ && oh->isShrink) { ++ /* Prune back the shrunken chunks */ ++ yaffs_PruneResizedChunks ++ (in, oh->fileSize); ++ /* Mark the block as having a shrinkHeader */ ++ bi->hasShrinkHeader = 1; ++ } ++ ++ if (dev->useHeaderFileSize) ++ ++ in->variant.fileVariant. ++ fileSize = ++ oh->fileSize; ++ ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ in->variant.hardLinkVariant. ++ equivalentObjectId = ++ oh->equivalentObjectId; ++ in->hardLinks.next = ++ (struct list_head *) ++ hardList; ++ hardList = in; ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ /* Do nothing */ ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ /* Do nothing */ ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ in->variant.symLinkVariant.alias = ++ yaffs_CloneString(oh->alias); ++ if(!in->variant.symLinkVariant.alias) ++ alloc_failed = 1; ++ break; ++ } ++ ++ if (parent == dev->deletedDir) { ++ yaffs_DestroyObject(in); ++ bi->hasShrinkHeader = 1; ++ } ++ } ++ } ++ } ++ ++ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { ++ /* If we got this far while scanning, then the block is fully allocated.*/ ++ state = YAFFS_BLOCK_STATE_FULL; ++ } ++ ++ bi->blockState = state; ++ ++ /* Now let's see if it was dirty */ ++ if (bi->pagesInUse == 0 && ++ !bi->hasShrinkHeader && ++ bi->blockState == YAFFS_BLOCK_STATE_FULL) { ++ yaffs_BlockBecameDirty(dev, blk); ++ } ++ ++ } ++ ++ if (blockIndex) { ++ YFREE(blockIndex); ++ } ++ ++ ++ /* Ok, we've done all the scanning. ++ * Fix up the hard link chains. ++ * We should now have scanned all the objects, now it's time to add these ++ * hardlinks. ++ */ ++ ++ yaffs_HardlinkFixup(dev,hardList); ++ ++ /* Handle the unlinked files. Since they were left in an unlinked state we should ++ * just delete them. ++ */ ++ { ++ struct list_head *i; ++ struct list_head *n; ++ ++ yaffs_Object *l; ++ /* Soft delete all the unlinked files */ ++ list_for_each_safe(i, n, ++ &dev->unlinkedDir->variant.directoryVariant. ++ children) { ++ if (i) { ++ l = list_entry(i, yaffs_Object, siblings); ++ yaffs_DestroyObject(l); ++ } ++ } ++ } ++ ++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); ++ ++ if(alloc_failed){ ++ return YAFFS_FAIL; ++ } ++ ++ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR))); ++ ++ ++ return YAFFS_OK; ++} ++ ++static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in) ++{ ++ __u8 *chunkData; ++ yaffs_ObjectHeader *oh; ++ yaffs_Device *dev = in->myDev; ++ yaffs_ExtendedTags tags; ++ int result; ++ int alloc_failed = 0; ++ ++ if(!in) ++ return; ++ ++#if 0 ++ T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR), ++ in->objectId, ++ in->lazyLoaded ? "not yet" : "already")); ++#endif ++ ++ if(in->lazyLoaded){ ++ in->lazyLoaded = 0; ++ chunkData = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags); ++ oh = (yaffs_ObjectHeader *) chunkData; ++ ++ in->yst_mode = oh->yst_mode; ++#ifdef CONFIG_YAFFS_WINCE ++ in->win_atime[0] = oh->win_atime[0]; ++ in->win_ctime[0] = oh->win_ctime[0]; ++ in->win_mtime[0] = oh->win_mtime[0]; ++ in->win_atime[1] = oh->win_atime[1]; ++ in->win_ctime[1] = oh->win_ctime[1]; ++ in->win_mtime[1] = oh->win_mtime[1]; ++#else ++ in->yst_uid = oh->yst_uid; ++ in->yst_gid = oh->yst_gid; ++ in->yst_atime = oh->yst_atime; ++ in->yst_mtime = oh->yst_mtime; ++ in->yst_ctime = oh->yst_ctime; ++ in->yst_rdev = oh->yst_rdev; ++ ++#endif ++ yaffs_SetObjectName(in, oh->name); ++ ++ if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){ ++ in->variant.symLinkVariant.alias = ++ yaffs_CloneString(oh->alias); ++ if(!in->variant.symLinkVariant.alias) ++ alloc_failed = 1; /* Not returned to caller */ ++ } ++ ++ yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__); ++ } ++} ++ ++static int yaffs_ScanBackwards(yaffs_Device * dev) ++{ ++ yaffs_ExtendedTags tags; ++ int blk; ++ int blockIterator; ++ int startIterator; ++ int endIterator; ++ int nBlocksToScan = 0; ++ ++ int chunk; ++ int result; ++ int c; ++ int deleted; ++ yaffs_BlockState state; ++ yaffs_Object *hardList = NULL; ++ yaffs_BlockInfo *bi; ++ int sequenceNumber; ++ yaffs_ObjectHeader *oh; ++ yaffs_Object *in; ++ yaffs_Object *parent; ++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; ++ int itsUnlinked; ++ __u8 *chunkData; ++ ++ int fileSize; ++ int isShrink; ++ int foundChunksInBlock; ++ int equivalentObjectId; ++ int alloc_failed = 0; ++ ++ ++ yaffs_BlockIndex *blockIndex = NULL; ++ int altBlockIndex = 0; ++ ++ if (!dev->isYaffs2) { ++ T(YAFFS_TRACE_SCAN, ++ (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR ++ ("yaffs_ScanBackwards starts intstartblk %d intendblk %d..." ++ TENDSTR), dev->internalStartBlock, dev->internalEndBlock)); ++ ++ ++ dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; ++ ++ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); ++ ++ if(!blockIndex) { ++ blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); ++ altBlockIndex = 1; ++ } ++ ++ if(!blockIndex) { ++ T(YAFFS_TRACE_SCAN, ++ (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ dev->blocksInCheckpoint = 0; ++ ++ chunkData = yaffs_GetTempBuffer(dev, __LINE__); ++ ++ /* Scan all the blocks to determine their state */ ++ for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { ++ bi = yaffs_GetBlockInfo(dev, blk); ++ yaffs_ClearChunkBits(dev, blk); ++ bi->pagesInUse = 0; ++ bi->softDeletions = 0; ++ ++ yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); ++ ++ bi->blockState = state; ++ bi->sequenceNumber = sequenceNumber; ++ ++ if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) ++ bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT; ++ ++ T(YAFFS_TRACE_SCAN_DEBUG, ++ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, ++ state, sequenceNumber)); ++ ++ ++ if(state == YAFFS_BLOCK_STATE_CHECKPOINT){ ++ dev->blocksInCheckpoint++; ++ ++ } else if (state == YAFFS_BLOCK_STATE_DEAD) { ++ T(YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("block %d is bad" TENDSTR), blk)); ++ } else if (state == YAFFS_BLOCK_STATE_EMPTY) { ++ T(YAFFS_TRACE_SCAN_DEBUG, ++ (TSTR("Block empty " TENDSTR))); ++ dev->nErasedBlocks++; ++ dev->nFreeChunks += dev->nChunksPerBlock; ++ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { ++ ++ /* Determine the highest sequence number */ ++ if (dev->isYaffs2 && ++ sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER && ++ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { ++ ++ blockIndex[nBlocksToScan].seq = sequenceNumber; ++ blockIndex[nBlocksToScan].block = blk; ++ ++ nBlocksToScan++; ++ ++ if (sequenceNumber >= dev->sequenceNumber) { ++ dev->sequenceNumber = sequenceNumber; ++ } ++ } else if (dev->isYaffs2) { ++ /* TODO: Nasty sequence number! */ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR ++ ("Block scanning block %d has bad sequence number %d" ++ TENDSTR), blk, sequenceNumber)); ++ ++ } ++ } ++ } ++ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); ++ ++ ++ ++ YYIELD(); ++ ++ /* Sort the blocks */ ++#ifndef CONFIG_YAFFS_USE_OWN_SORT ++ yaffs_qsort(blockIndex, nBlocksToScan, ++ sizeof(yaffs_BlockIndex), ybicmp); ++#else ++ { ++ /* Dungy old bubble sort... */ ++ ++ yaffs_BlockIndex temp; ++ int i; ++ int j; ++ ++ for (i = 0; i < nBlocksToScan; i++) ++ for (j = i + 1; j < nBlocksToScan; j++) ++ if (blockIndex[i].seq > blockIndex[j].seq) { ++ temp = blockIndex[j]; ++ blockIndex[j] = blockIndex[i]; ++ blockIndex[i] = temp; ++ } ++ } ++#endif ++ ++ YYIELD(); ++ ++ T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); ++ ++ /* Now scan the blocks looking at the data. */ ++ startIterator = 0; ++ endIterator = nBlocksToScan - 1; ++ T(YAFFS_TRACE_SCAN_DEBUG, ++ (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); ++ ++ /* For each block.... backwards */ ++ for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; ++ blockIterator--) { ++ /* Cooperative multitasking! This loop can run for so ++ long that watchdog timers expire. */ ++ YYIELD(); ++ ++ /* get the block to scan in the correct order */ ++ blk = blockIndex[blockIterator].block; ++ ++ bi = yaffs_GetBlockInfo(dev, blk); ++ ++ ++ state = bi->blockState; ++ ++ deleted = 0; ++ ++ /* For each chunk in each block that needs scanning.... */ ++ foundChunksInBlock = 0; ++ for (c = dev->nChunksPerBlock - 1; ++ !alloc_failed && c >= 0 && ++ (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || ++ state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { ++ /* Scan backwards... ++ * Read the tags and decide what to do ++ */ ++ ++ chunk = blk * dev->nChunksPerBlock + c; ++ ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, ++ &tags); ++ ++ /* Let's have a good look at this chunk... */ ++ ++ if (!tags.chunkUsed) { ++ /* An unassigned chunk in the block. ++ * If there are used chunks after this one, then ++ * it is a chunk that was skipped due to failing the erased ++ * check. Just skip it so that it can be deleted. ++ * But, more typically, We get here when this is an unallocated ++ * chunk and his means that either the block is empty or ++ * this is the one being allocated from ++ */ ++ ++ if(foundChunksInBlock) ++ { ++ /* This is a chunk that was skipped due to failing the erased check */ ++ ++ } else if (c == 0) { ++ /* We're looking at the first chunk in the block so the block is unused */ ++ state = YAFFS_BLOCK_STATE_EMPTY; ++ dev->nErasedBlocks++; ++ } else { ++ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || ++ state == YAFFS_BLOCK_STATE_ALLOCATING) { ++ if(dev->sequenceNumber == bi->sequenceNumber) { ++ /* this is the block being allocated from */ ++ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR ++ (" Allocating from %d %d" ++ TENDSTR), blk, c)); ++ ++ state = YAFFS_BLOCK_STATE_ALLOCATING; ++ dev->allocationBlock = blk; ++ dev->allocationPage = c; ++ dev->allocationBlockFinder = blk; ++ } ++ else { ++ /* This is a partially written block that is not ++ * the current allocation block. This block must have ++ * had a write failure, so set up for retirement. ++ */ ++ ++ bi->needsRetiring = 1; ++ bi->gcPrioritise = 1; ++ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("Partially written block %d being set for retirement" TENDSTR), ++ blk)); ++ } ++ ++ } ++ ++ } ++ ++ dev->nFreeChunks++; ++ ++ } else if (tags.chunkId > 0) { ++ /* chunkId > 0 so it is a data chunk... */ ++ unsigned int endpos; ++ __u32 chunkBase = ++ (tags.chunkId - 1) * dev->nDataBytesPerChunk; ++ ++ foundChunksInBlock = 1; ++ ++ ++ yaffs_SetChunkBit(dev, blk, c); ++ bi->pagesInUse++; ++ ++ in = yaffs_FindOrCreateObjectByNumber(dev, ++ tags. ++ objectId, ++ YAFFS_OBJECT_TYPE_FILE); ++ if(!in){ ++ /* Out of memory */ ++ alloc_failed = 1; ++ } ++ ++ if (in && ++ in->variantType == YAFFS_OBJECT_TYPE_FILE ++ && chunkBase < ++ in->variant.fileVariant.shrinkSize) { ++ /* This has not been invalidated by a resize */ ++ if(!yaffs_PutChunkIntoFile(in, tags.chunkId, ++ chunk, -1)){ ++ alloc_failed = 1; ++ } ++ ++ /* File size is calculated by looking at the data chunks if we have not ++ * seen an object header yet. Stop this practice once we find an object header. ++ */ ++ endpos = ++ (tags.chunkId - ++ 1) * dev->nDataBytesPerChunk + ++ tags.byteCount; ++ ++ if (!in->valid && /* have not got an object header yet */ ++ in->variant.fileVariant. ++ scannedFileSize < endpos) { ++ in->variant.fileVariant. ++ scannedFileSize = endpos; ++ in->variant.fileVariant. ++ fileSize = ++ in->variant.fileVariant. ++ scannedFileSize; ++ } ++ ++ } else if(in) { ++ /* This chunk has been invalidated by a resize, so delete */ ++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__); ++ ++ } ++ } else { ++ /* chunkId == 0, so it is an ObjectHeader. ++ * Thus, we read in the object header and make the object ++ */ ++ foundChunksInBlock = 1; ++ ++ yaffs_SetChunkBit(dev, blk, c); ++ bi->pagesInUse++; ++ ++ oh = NULL; ++ in = NULL; ++ ++ if (tags.extraHeaderInfoAvailable) { ++ in = yaffs_FindOrCreateObjectByNumber ++ (dev, tags.objectId, ++ tags.extraObjectType); ++ } ++ ++ if (!in || ++#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD ++ !in->valid || ++#endif ++ tags.extraShadows || ++ (!in->valid && ++ (tags.objectId == YAFFS_OBJECTID_ROOT || ++ tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) ++ ) { ++ ++ /* If we don't have valid info then we need to read the chunk ++ * TODO In future we can probably defer reading the chunk and ++ * living with invalid data until needed. ++ */ ++ ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, ++ chunk, ++ chunkData, ++ NULL); ++ ++ oh = (yaffs_ObjectHeader *) chunkData; ++ ++ if (!in) ++ in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type); ++ ++ } ++ ++ if (!in) { ++ /* TODO Hoosterman we have a problem! */ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs tragedy: Could not make object for object %d " ++ "at chunk %d during scan" ++ TENDSTR), tags.objectId, chunk)); ++ ++ } ++ ++ if (in->valid) { ++ /* We have already filled this one. ++ * We have a duplicate that will be discarded, but ++ * we first have to suck out resize info if it is a file. ++ */ ++ ++ if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) && ++ ((oh && ++ oh-> type == YAFFS_OBJECT_TYPE_FILE)|| ++ (tags.extraHeaderInfoAvailable && ++ tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE)) ++ ) { ++ __u32 thisSize = ++ (oh) ? oh->fileSize : tags. ++ extraFileLength; ++ __u32 parentObjectId = ++ (oh) ? oh-> ++ parentObjectId : tags. ++ extraParentObjectId; ++ unsigned isShrink = ++ (oh) ? oh->isShrink : tags. ++ extraIsShrinkHeader; ++ ++ /* If it is deleted (unlinked at start also means deleted) ++ * we treat the file size as being zeroed at this point. ++ */ ++ if (parentObjectId == ++ YAFFS_OBJECTID_DELETED ++ || parentObjectId == ++ YAFFS_OBJECTID_UNLINKED) { ++ thisSize = 0; ++ isShrink = 1; ++ } ++ ++ if (isShrink && ++ in->variant.fileVariant. ++ shrinkSize > thisSize) { ++ in->variant.fileVariant. ++ shrinkSize = ++ thisSize; ++ } ++ ++ if (isShrink) { ++ bi->hasShrinkHeader = 1; ++ } ++ ++ } ++ /* Use existing - destroy this one. */ ++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__); ++ ++ } ++ ++ if (!in->valid && ++ (tags.objectId == YAFFS_OBJECTID_ROOT || ++ tags.objectId == ++ YAFFS_OBJECTID_LOSTNFOUND)) { ++ /* We only load some info, don't fiddle with directory structure */ ++ in->valid = 1; ++ ++ if(oh) { ++ in->variantType = oh->type; ++ ++ in->yst_mode = oh->yst_mode; ++#ifdef CONFIG_YAFFS_WINCE ++ in->win_atime[0] = oh->win_atime[0]; ++ in->win_ctime[0] = oh->win_ctime[0]; ++ in->win_mtime[0] = oh->win_mtime[0]; ++ in->win_atime[1] = oh->win_atime[1]; ++ in->win_ctime[1] = oh->win_ctime[1]; ++ in->win_mtime[1] = oh->win_mtime[1]; ++#else ++ in->yst_uid = oh->yst_uid; ++ in->yst_gid = oh->yst_gid; ++ in->yst_atime = oh->yst_atime; ++ in->yst_mtime = oh->yst_mtime; ++ in->yst_ctime = oh->yst_ctime; ++ in->yst_rdev = oh->yst_rdev; ++ ++#endif ++ } else { ++ in->variantType = tags.extraObjectType; ++ in->lazyLoaded = 1; ++ } ++ ++ in->chunkId = chunk; ++ ++ } else if (!in->valid) { ++ /* we need to load this info */ ++ ++ in->valid = 1; ++ in->chunkId = chunk; ++ ++ if(oh) { ++ in->variantType = oh->type; ++ ++ in->yst_mode = oh->yst_mode; ++#ifdef CONFIG_YAFFS_WINCE ++ in->win_atime[0] = oh->win_atime[0]; ++ in->win_ctime[0] = oh->win_ctime[0]; ++ in->win_mtime[0] = oh->win_mtime[0]; ++ in->win_atime[1] = oh->win_atime[1]; ++ in->win_ctime[1] = oh->win_ctime[1]; ++ in->win_mtime[1] = oh->win_mtime[1]; ++#else ++ in->yst_uid = oh->yst_uid; ++ in->yst_gid = oh->yst_gid; ++ in->yst_atime = oh->yst_atime; ++ in->yst_mtime = oh->yst_mtime; ++ in->yst_ctime = oh->yst_ctime; ++ in->yst_rdev = oh->yst_rdev; ++#endif ++ ++ if (oh->shadowsObject > 0) ++ yaffs_HandleShadowedObject(dev, ++ oh-> ++ shadowsObject, ++ 1); ++ ++ ++ yaffs_SetObjectName(in, oh->name); ++ parent = ++ yaffs_FindOrCreateObjectByNumber ++ (dev, oh->parentObjectId, ++ YAFFS_OBJECT_TYPE_DIRECTORY); ++ ++ fileSize = oh->fileSize; ++ isShrink = oh->isShrink; ++ equivalentObjectId = oh->equivalentObjectId; ++ ++ } ++ else { ++ in->variantType = tags.extraObjectType; ++ parent = ++ yaffs_FindOrCreateObjectByNumber ++ (dev, tags.extraParentObjectId, ++ YAFFS_OBJECT_TYPE_DIRECTORY); ++ fileSize = tags.extraFileLength; ++ isShrink = tags.extraIsShrinkHeader; ++ equivalentObjectId = tags.extraEquivalentObjectId; ++ in->lazyLoaded = 1; ++ ++ } ++ in->dirty = 0; ++ ++ /* directory stuff... ++ * hook up to parent ++ */ ++ ++ if (parent->variantType == ++ YAFFS_OBJECT_TYPE_UNKNOWN) { ++ /* Set up as a directory */ ++ parent->variantType = ++ YAFFS_OBJECT_TYPE_DIRECTORY; ++ INIT_LIST_HEAD(&parent->variant. ++ directoryVariant. ++ children); ++ } else if (parent->variantType != ++ YAFFS_OBJECT_TYPE_DIRECTORY) ++ { ++ /* Hoosterman, another problem.... ++ * We're trying to use a non-directory as a directory ++ */ ++ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs tragedy: attempting to use non-directory as" ++ " a directory in scan. Put in lost+found." ++ TENDSTR))); ++ parent = dev->lostNFoundDir; ++ } ++ ++ yaffs_AddObjectToDirectory(parent, in); ++ ++ itsUnlinked = (parent == dev->deletedDir) || ++ (parent == dev->unlinkedDir); ++ ++ if (isShrink) { ++ /* Mark the block as having a shrinkHeader */ ++ bi->hasShrinkHeader = 1; ++ } ++ ++ /* Note re hardlinks. ++ * Since we might scan a hardlink before its equivalent object is scanned ++ * we put them all in a list. ++ * After scanning is complete, we should have all the objects, so we run ++ * through this list and fix up all the chains. ++ */ ++ ++ switch (in->variantType) { ++ case YAFFS_OBJECT_TYPE_UNKNOWN: ++ /* Todo got a problem */ ++ break; ++ case YAFFS_OBJECT_TYPE_FILE: ++ ++ if (in->variant.fileVariant. ++ scannedFileSize < fileSize) { ++ /* This covers the case where the file size is greater ++ * than where the data is ++ * This will happen if the file is resized to be larger ++ * than its current data extents. ++ */ ++ in->variant.fileVariant.fileSize = fileSize; ++ in->variant.fileVariant.scannedFileSize = ++ in->variant.fileVariant.fileSize; ++ } ++ ++ if (isShrink && ++ in->variant.fileVariant.shrinkSize > fileSize) { ++ in->variant.fileVariant.shrinkSize = fileSize; ++ } ++ ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ if(!itsUnlinked) { ++ in->variant.hardLinkVariant.equivalentObjectId = ++ equivalentObjectId; ++ in->hardLinks.next = ++ (struct list_head *) hardList; ++ hardList = in; ++ } ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ /* Do nothing */ ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ /* Do nothing */ ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ if(oh){ ++ in->variant.symLinkVariant.alias = ++ yaffs_CloneString(oh-> ++ alias); ++ if(!in->variant.symLinkVariant.alias) ++ alloc_failed = 1; ++ } ++ break; ++ } ++ ++ } ++ ++ } ++ ++ } /* End of scanning for each chunk */ ++ ++ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { ++ /* If we got this far while scanning, then the block is fully allocated. */ ++ state = YAFFS_BLOCK_STATE_FULL; ++ } ++ ++ bi->blockState = state; ++ ++ /* Now let's see if it was dirty */ ++ if (bi->pagesInUse == 0 && ++ !bi->hasShrinkHeader && ++ bi->blockState == YAFFS_BLOCK_STATE_FULL) { ++ yaffs_BlockBecameDirty(dev, blk); ++ } ++ ++ } ++ ++ if (altBlockIndex) ++ YFREE_ALT(blockIndex); ++ else ++ YFREE(blockIndex); ++ ++ /* Ok, we've done all the scanning. ++ * Fix up the hard link chains. ++ * We should now have scanned all the objects, now it's time to add these ++ * hardlinks. ++ */ ++ yaffs_HardlinkFixup(dev,hardList); ++ ++ ++ /* ++ * Sort out state of unlinked and deleted objects. ++ */ ++ { ++ struct list_head *i; ++ struct list_head *n; ++ ++ yaffs_Object *l; ++ ++ /* Soft delete all the unlinked files */ ++ list_for_each_safe(i, n, ++ &dev->unlinkedDir->variant.directoryVariant. ++ children) { ++ if (i) { ++ l = list_entry(i, yaffs_Object, siblings); ++ yaffs_DestroyObject(l); ++ } ++ } ++ ++ /* Soft delete all the deletedDir files */ ++ list_for_each_safe(i, n, ++ &dev->deletedDir->variant.directoryVariant. ++ children) { ++ if (i) { ++ l = list_entry(i, yaffs_Object, siblings); ++ yaffs_DestroyObject(l); ++ ++ } ++ } ++ } ++ ++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); ++ ++ if(alloc_failed){ ++ return YAFFS_FAIL; ++ } ++ ++ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); ++ ++ return YAFFS_OK; ++} ++ ++/*------------------------------ Directory Functions ----------------------------- */ ++ ++static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj) ++{ ++ yaffs_Device *dev = obj->myDev; ++ ++ if(dev && dev->removeObjectCallback) ++ dev->removeObjectCallback(obj); ++ ++ list_del_init(&obj->siblings); ++ obj->parent = NULL; ++} ++ ++ ++static void yaffs_AddObjectToDirectory(yaffs_Object * directory, ++ yaffs_Object * obj) ++{ ++ ++ if (!directory) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragedy: Trying to add an object to a null pointer directory" ++ TENDSTR))); ++ YBUG(); ++ } ++ if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragedy: Trying to add an object to a non-directory" ++ TENDSTR))); ++ YBUG(); ++ } ++ ++ if (obj->siblings.prev == NULL) { ++ /* Not initialised */ ++ INIT_LIST_HEAD(&obj->siblings); ++ ++ } else if (!list_empty(&obj->siblings)) { ++ /* If it is holed up somewhere else, un hook it */ ++ yaffs_RemoveObjectFromDirectory(obj); ++ } ++ /* Now add it */ ++ list_add(&obj->siblings, &directory->variant.directoryVariant.children); ++ obj->parent = directory; ++ ++ if (directory == obj->myDev->unlinkedDir ++ || directory == obj->myDev->deletedDir) { ++ obj->unlinked = 1; ++ obj->myDev->nUnlinkedFiles++; ++ obj->renameAllowed = 0; ++ } ++} ++ ++yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory, ++ const YCHAR * name) ++{ ++ int sum; ++ ++ struct list_head *i; ++ YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; ++ ++ yaffs_Object *l; ++ ++ if (!name) { ++ return NULL; ++ } ++ ++ if (!directory) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragedy: yaffs_FindObjectByName: null pointer directory" ++ TENDSTR))); ++ YBUG(); ++ } ++ if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); ++ YBUG(); ++ } ++ ++ sum = yaffs_CalcNameSum(name); ++ ++ list_for_each(i, &directory->variant.directoryVariant.children) { ++ if (i) { ++ l = list_entry(i, yaffs_Object, siblings); ++ ++ yaffs_CheckObjectDetailsLoaded(l); ++ ++ /* Special case for lost-n-found */ ++ if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) { ++ if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) { ++ return l; ++ } ++ } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0) ++ { ++ /* LostnFound cunk called Objxxx ++ * Do a real check ++ */ ++ yaffs_GetObjectName(l, buffer, ++ YAFFS_MAX_NAME_LENGTH); ++ if (yaffs_strncmp(name, buffer,YAFFS_MAX_NAME_LENGTH) == 0) { ++ return l; ++ } ++ ++ } ++ } ++ } ++ ++ return NULL; ++} ++ ++ ++#if 0 ++int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir, ++ int (*fn) (yaffs_Object *)) ++{ ++ struct list_head *i; ++ yaffs_Object *l; ++ ++ if (!theDir) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragedy: yaffs_FindObjectByName: null pointer directory" ++ TENDSTR))); ++ YBUG(); ++ } ++ if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR))); ++ YBUG(); ++ } ++ ++ list_for_each(i, &theDir->variant.directoryVariant.children) { ++ if (i) { ++ l = list_entry(i, yaffs_Object, siblings); ++ if (l && !fn(l)) { ++ return YAFFS_FAIL; ++ } ++ } ++ } ++ ++ return YAFFS_OK; ++ ++} ++#endif ++ ++/* GetEquivalentObject dereferences any hard links to get to the ++ * actual object. ++ */ ++ ++yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj) ++{ ++ if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { ++ /* We want the object id of the equivalent object, not this one */ ++ obj = obj->variant.hardLinkVariant.equivalentObject; ++ yaffs_CheckObjectDetailsLoaded(obj); ++ } ++ return obj; ++ ++} ++ ++int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize) ++{ ++ memset(name, 0, buffSize * sizeof(YCHAR)); ++ ++ yaffs_CheckObjectDetailsLoaded(obj); ++ ++ if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) { ++ yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1); ++ } else if (obj->chunkId <= 0) { ++ YCHAR locName[20]; ++ /* make up a name */ ++ yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX, ++ obj->objectId); ++ yaffs_strncpy(name, locName, buffSize - 1); ++ ++ } ++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM ++ else if (obj->shortName[0]) { ++ yaffs_strcpy(name, obj->shortName); ++ } ++#endif ++ else { ++ int result; ++ __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__); ++ ++ yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer; ++ ++ memset(buffer, 0, obj->myDev->nDataBytesPerChunk); ++ ++ if (obj->chunkId >= 0) { ++ result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev, ++ obj->chunkId, buffer, ++ NULL); ++ } ++ yaffs_strncpy(name, oh->name, buffSize - 1); ++ ++ yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__); ++ } ++ ++ return yaffs_strlen(name); ++} ++ ++int yaffs_GetObjectFileLength(yaffs_Object * obj) ++{ ++ ++ /* Dereference any hard linking */ ++ obj = yaffs_GetEquivalentObject(obj); ++ ++ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { ++ return obj->variant.fileVariant.fileSize; ++ } ++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { ++ return yaffs_strlen(obj->variant.symLinkVariant.alias); ++ } else { ++ /* Only a directory should drop through to here */ ++ return obj->myDev->nDataBytesPerChunk; ++ } ++} ++ ++int yaffs_GetObjectLinkCount(yaffs_Object * obj) ++{ ++ int count = 0; ++ struct list_head *i; ++ ++ if (!obj->unlinked) { ++ count++; /* the object itself */ ++ } ++ list_for_each(i, &obj->hardLinks) { ++ count++; /* add the hard links; */ ++ } ++ return count; ++ ++} ++ ++int yaffs_GetObjectInode(yaffs_Object * obj) ++{ ++ obj = yaffs_GetEquivalentObject(obj); ++ ++ return obj->objectId; ++} ++ ++unsigned yaffs_GetObjectType(yaffs_Object * obj) ++{ ++ obj = yaffs_GetEquivalentObject(obj); ++ ++ switch (obj->variantType) { ++ case YAFFS_OBJECT_TYPE_FILE: ++ return DT_REG; ++ break; ++ case YAFFS_OBJECT_TYPE_DIRECTORY: ++ return DT_DIR; ++ break; ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ return DT_LNK; ++ break; ++ case YAFFS_OBJECT_TYPE_HARDLINK: ++ return DT_REG; ++ break; ++ case YAFFS_OBJECT_TYPE_SPECIAL: ++ if (S_ISFIFO(obj->yst_mode)) ++ return DT_FIFO; ++ if (S_ISCHR(obj->yst_mode)) ++ return DT_CHR; ++ if (S_ISBLK(obj->yst_mode)) ++ return DT_BLK; ++ if (S_ISSOCK(obj->yst_mode)) ++ return DT_SOCK; ++ default: ++ return DT_REG; ++ break; ++ } ++} ++ ++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj) ++{ ++ obj = yaffs_GetEquivalentObject(obj); ++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { ++ return yaffs_CloneString(obj->variant.symLinkVariant.alias); ++ } else { ++ return yaffs_CloneString(_Y("")); ++ } ++} ++ ++#ifndef CONFIG_YAFFS_WINCE ++ ++int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr) ++{ ++ unsigned int valid = attr->ia_valid; ++ ++ if (valid & ATTR_MODE) ++ obj->yst_mode = attr->ia_mode; ++ if (valid & ATTR_UID) ++ obj->yst_uid = attr->ia_uid; ++ if (valid & ATTR_GID) ++ obj->yst_gid = attr->ia_gid; ++ ++ if (valid & ATTR_ATIME) ++ obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime); ++ if (valid & ATTR_CTIME) ++ obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime); ++ if (valid & ATTR_MTIME) ++ obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); ++ ++ if (valid & ATTR_SIZE) ++ yaffs_ResizeFile(obj, attr->ia_size); ++ ++ yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0); ++ ++ return YAFFS_OK; ++ ++} ++int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr) ++{ ++ unsigned int valid = 0; ++ ++ attr->ia_mode = obj->yst_mode; ++ valid |= ATTR_MODE; ++ attr->ia_uid = obj->yst_uid; ++ valid |= ATTR_UID; ++ attr->ia_gid = obj->yst_gid; ++ valid |= ATTR_GID; ++ ++ Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime; ++ valid |= ATTR_ATIME; ++ Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime; ++ valid |= ATTR_CTIME; ++ Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; ++ valid |= ATTR_MTIME; ++ ++ attr->ia_size = yaffs_GetFileSize(obj); ++ valid |= ATTR_SIZE; ++ ++ attr->ia_valid = valid; ++ ++ return YAFFS_OK; ++ ++} ++ ++#endif ++ ++#if 0 ++int yaffs_DumpObject(yaffs_Object * obj) ++{ ++ YCHAR name[257]; ++ ++ yaffs_GetObjectName(obj, name, 256); ++ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d" ++ " chunk %d type %d size %d\n" ++ TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name, ++ obj->dirty, obj->valid, obj->serial, obj->sum, obj->chunkId, ++ yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj))); ++ ++ return YAFFS_OK; ++} ++#endif ++ ++/*---------------------------- Initialisation code -------------------------------------- */ ++ ++static int yaffs_CheckDevFunctions(const yaffs_Device * dev) ++{ ++ ++ /* Common functions, gotta have */ ++ if (!dev->eraseBlockInNAND || !dev->initialiseNAND) ++ return 0; ++ ++#ifdef CONFIG_YAFFS_YAFFS2 ++ ++ /* Can use the "with tags" style interface for yaffs1 or yaffs2 */ ++ if (dev->writeChunkWithTagsToNAND && ++ dev->readChunkWithTagsFromNAND && ++ !dev->writeChunkToNAND && ++ !dev->readChunkFromNAND && ++ dev->markNANDBlockBad && dev->queryNANDBlock) ++ return 1; ++#endif ++ ++ /* Can use the "spare" style interface for yaffs1 */ ++ if (!dev->isYaffs2 && ++ !dev->writeChunkWithTagsToNAND && ++ !dev->readChunkWithTagsFromNAND && ++ dev->writeChunkToNAND && ++ dev->readChunkFromNAND && ++ !dev->markNANDBlockBad && !dev->queryNANDBlock) ++ return 1; ++ ++ return 0; /* bad */ ++} ++ ++ ++static int yaffs_CreateInitialDirectories(yaffs_Device *dev) ++{ ++ /* Initialise the unlinked, deleted, root and lost and found directories */ ++ ++ dev->lostNFoundDir = dev->rootDir = NULL; ++ dev->unlinkedDir = dev->deletedDir = NULL; ++ ++ dev->unlinkedDir = ++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR); ++ ++ dev->deletedDir = ++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR); ++ ++ dev->rootDir = ++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT, ++ YAFFS_ROOT_MODE | S_IFDIR); ++ dev->lostNFoundDir = ++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND, ++ YAFFS_LOSTNFOUND_MODE | S_IFDIR); ++ ++ if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){ ++ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); ++ return YAFFS_OK; ++ } ++ ++ return YAFFS_FAIL; ++} ++ ++int yaffs_GutsInitialise(yaffs_Device * dev) ++{ ++ int init_failed = 0; ++ unsigned x; ++ int bits; ++ ++ T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); ++ ++ /* Check stuff that must be set */ ++ ++ if (!dev) { ++ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Need a device" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ dev->internalStartBlock = dev->startBlock; ++ dev->internalEndBlock = dev->endBlock; ++ dev->blockOffset = 0; ++ dev->chunkOffset = 0; ++ dev->nFreeChunks = 0; ++ ++ if (dev->startBlock == 0) { ++ dev->internalStartBlock = dev->startBlock + 1; ++ dev->internalEndBlock = dev->endBlock + 1; ++ dev->blockOffset = 1; ++ dev->chunkOffset = dev->nChunksPerBlock; ++ } ++ ++ /* Check geometry parameters. */ ++ ++ if ((dev->isYaffs2 && dev->nDataBytesPerChunk < 1024) || ++ (!dev->isYaffs2 && dev->nDataBytesPerChunk != 512) || ++ dev->nChunksPerBlock < 2 || ++ dev->nReservedBlocks < 2 || ++ dev->internalStartBlock <= 0 || ++ dev->internalEndBlock <= 0 || ++ dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2) // otherwise it is too small ++ ) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s " ++ TENDSTR), dev->nDataBytesPerChunk, dev->isYaffs2 ? "2" : "")); ++ return YAFFS_FAIL; ++ } ++ ++ if (yaffs_InitialiseNAND(dev) != YAFFS_OK) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ /* Got the right mix of functions? */ ++ if (!yaffs_CheckDevFunctions(dev)) { ++ /* Function missing */ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("yaffs: device function(s) missing or wrong\n" TENDSTR))); ++ ++ return YAFFS_FAIL; ++ } ++ ++ /* This is really a compilation check. */ ++ if (!yaffs_CheckStructures()) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs_CheckStructures failed\n" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ if (dev->isMounted) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: device already mounted\n" TENDSTR))); ++ return YAFFS_FAIL; ++ } ++ ++ /* Finished with most checks. One or two more checks happen later on too. */ ++ ++ dev->isMounted = 1; ++ ++ ++ ++ /* OK now calculate a few things for the device */ ++ ++ /* ++ * Calculate all the chunk size manipulation numbers: ++ */ ++ /* Start off assuming it is a power of 2 */ ++ dev->chunkShift = ShiftDiv(dev->nDataBytesPerChunk); ++ dev->chunkMask = (1<<dev->chunkShift) - 1; ++ ++ if(dev->nDataBytesPerChunk == (dev->chunkMask + 1)){ ++ /* Yes it is a power of 2, disable crumbs */ ++ dev->crumbMask = 0; ++ dev->crumbShift = 0; ++ dev->crumbsPerChunk = 0; ++ } else { ++ /* Not a power of 2, use crumbs instead */ ++ dev->crumbShift = ShiftDiv(sizeof(yaffs_PackedTags2TagsPart)); ++ dev->crumbMask = (1<<dev->crumbShift)-1; ++ dev->crumbsPerChunk = dev->nDataBytesPerChunk/(1 << dev->crumbShift); ++ dev->chunkShift = 0; ++ dev->chunkMask = 0; ++ } ++ ++ ++ /* ++ * Calculate chunkGroupBits. ++ * We need to find the next power of 2 > than internalEndBlock ++ */ ++ ++ x = dev->nChunksPerBlock * (dev->internalEndBlock + 1); ++ ++ bits = ShiftsGE(x); ++ ++ /* Set up tnode width if wide tnodes are enabled. */ ++ if(!dev->wideTnodesDisabled){ ++ /* bits must be even so that we end up with 32-bit words */ ++ if(bits & 1) ++ bits++; ++ if(bits < 16) ++ dev->tnodeWidth = 16; ++ else ++ dev->tnodeWidth = bits; ++ } ++ else ++ dev->tnodeWidth = 16; ++ ++ dev->tnodeMask = (1<<dev->tnodeWidth)-1; ++ ++ /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled), ++ * so if the bitwidth of the ++ * chunk range we're using is greater than 16 we need ++ * to figure out chunk shift and chunkGroupSize ++ */ ++ ++ if (bits <= dev->tnodeWidth) ++ dev->chunkGroupBits = 0; ++ else ++ dev->chunkGroupBits = bits - dev->tnodeWidth; ++ ++ ++ dev->chunkGroupSize = 1 << dev->chunkGroupBits; ++ ++ if (dev->nChunksPerBlock < dev->chunkGroupSize) { ++ /* We have a problem because the soft delete won't work if ++ * the chunk group size > chunks per block. ++ * This can be remedied by using larger "virtual blocks". ++ */ ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: chunk group too large\n" TENDSTR))); ++ ++ return YAFFS_FAIL; ++ } ++ ++ /* OK, we've finished verifying the device, lets continue with initialisation */ ++ ++ /* More device initialisation */ ++ dev->garbageCollections = 0; ++ dev->passiveGarbageCollections = 0; ++ dev->currentDirtyChecker = 0; ++ dev->bufferedBlock = -1; ++ dev->doingBufferedBlockRewrite = 0; ++ dev->nDeletedFiles = 0; ++ dev->nBackgroundDeletions = 0; ++ dev->nUnlinkedFiles = 0; ++ dev->eccFixed = 0; ++ dev->eccUnfixed = 0; ++ dev->tagsEccFixed = 0; ++ dev->tagsEccUnfixed = 0; ++ dev->nErasureFailures = 0; ++ dev->nErasedBlocks = 0; ++ dev->isDoingGC = 0; ++ dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ ++ ++ /* Initialise temporary buffers and caches. */ ++ if(!yaffs_InitialiseTempBuffers(dev)) ++ init_failed = 1; ++ ++ dev->srCache = NULL; ++ dev->gcCleanupList = NULL; ++ ++ ++ if (!init_failed && ++ dev->nShortOpCaches > 0) { ++ int i; ++ __u8 *buf; ++ int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache); ++ ++ if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) { ++ dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; ++ } ++ ++ buf = dev->srCache = YMALLOC(srCacheBytes); ++ ++ if(dev->srCache) ++ memset(dev->srCache,0,srCacheBytes); ++ ++ for (i = 0; i < dev->nShortOpCaches && buf; i++) { ++ dev->srCache[i].object = NULL; ++ dev->srCache[i].lastUse = 0; ++ dev->srCache[i].dirty = 0; ++ dev->srCache[i].data = buf = YMALLOC_DMA(dev->nDataBytesPerChunk); ++ } ++ if(!buf) ++ init_failed = 1; ++ ++ dev->srLastUse = 0; ++ } ++ ++ dev->cacheHits = 0; ++ ++ if(!init_failed){ ++ dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); ++ if(!dev->gcCleanupList) ++ init_failed = 1; ++ } ++ ++ if (dev->isYaffs2) { ++ dev->useHeaderFileSize = 1; ++ } ++ if(!init_failed && !yaffs_InitialiseBlocks(dev)) ++ init_failed = 1; ++ ++ yaffs_InitialiseTnodes(dev); ++ yaffs_InitialiseObjects(dev); ++ ++ if(!init_failed && !yaffs_CreateInitialDirectories(dev)) ++ init_failed = 1; ++ ++ ++ if(!init_failed){ ++ /* Now scan the flash. */ ++ if (dev->isYaffs2) { ++ if(yaffs_CheckpointRestore(dev)) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("yaffs: restored from checkpoint" TENDSTR))); ++ } else { ++ ++ /* Clean up the mess caused by an aborted checkpoint load ++ * and scan backwards. ++ */ ++ yaffs_DeinitialiseBlocks(dev); ++ yaffs_DeinitialiseTnodes(dev); ++ yaffs_DeinitialiseObjects(dev); ++ ++ ++ dev->nErasedBlocks = 0; ++ dev->nFreeChunks = 0; ++ dev->allocationBlock = -1; ++ dev->allocationPage = -1; ++ dev->nDeletedFiles = 0; ++ dev->nUnlinkedFiles = 0; ++ dev->nBackgroundDeletions = 0; ++ dev->oldestDirtySequence = 0; ++ ++ if(!init_failed && !yaffs_InitialiseBlocks(dev)) ++ init_failed = 1; ++ ++ yaffs_InitialiseTnodes(dev); ++ yaffs_InitialiseObjects(dev); ++ ++ if(!init_failed && !yaffs_CreateInitialDirectories(dev)) ++ init_failed = 1; ++ ++ if(!init_failed && !yaffs_ScanBackwards(dev)) ++ init_failed = 1; ++ } ++ }else ++ if(!yaffs_Scan(dev)) ++ init_failed = 1; ++ } ++ ++ if(init_failed){ ++ /* Clean up the mess */ ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR))); ++ ++ yaffs_Deinitialise(dev); ++ return YAFFS_FAIL; ++ } ++ ++ /* Zero out stats */ ++ dev->nPageReads = 0; ++ dev->nPageWrites = 0; ++ dev->nBlockErasures = 0; ++ dev->nGCCopies = 0; ++ dev->nRetriedWrites = 0; ++ ++ dev->nRetiredBlocks = 0; ++ ++ yaffs_VerifyFreeChunks(dev); ++ yaffs_VerifyBlocks(dev); ++ ++ ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); ++ return YAFFS_OK; ++ ++} ++ ++void yaffs_Deinitialise(yaffs_Device * dev) ++{ ++ if (dev->isMounted) { ++ int i; ++ ++ yaffs_DeinitialiseBlocks(dev); ++ yaffs_DeinitialiseTnodes(dev); ++ yaffs_DeinitialiseObjects(dev); ++ if (dev->nShortOpCaches > 0 && ++ dev->srCache) { ++ ++ for (i = 0; i < dev->nShortOpCaches; i++) { ++ if(dev->srCache[i].data) ++ YFREE(dev->srCache[i].data); ++ dev->srCache[i].data = NULL; ++ } ++ ++ YFREE(dev->srCache); ++ dev->srCache = NULL; ++ } ++ ++ YFREE(dev->gcCleanupList); ++ ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { ++ YFREE(dev->tempBuffer[i].buffer); ++ } ++ ++ dev->isMounted = 0; ++ } ++ ++} ++ ++static int yaffs_CountFreeChunks(yaffs_Device * dev) ++{ ++ int nFree; ++ int b; ++ ++ yaffs_BlockInfo *blk; ++ ++ for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock; ++ b++) { ++ blk = yaffs_GetBlockInfo(dev, b); ++ ++ switch (blk->blockState) { ++ case YAFFS_BLOCK_STATE_EMPTY: ++ case YAFFS_BLOCK_STATE_ALLOCATING: ++ case YAFFS_BLOCK_STATE_COLLECTING: ++ case YAFFS_BLOCK_STATE_FULL: ++ nFree += ++ (dev->nChunksPerBlock - blk->pagesInUse + ++ blk->softDeletions); ++ break; ++ default: ++ break; ++ } ++ ++ } ++ ++ return nFree; ++} ++ ++int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev) ++{ ++ /* This is what we report to the outside world */ ++ ++ int nFree; ++ int nDirtyCacheChunks; ++ int blocksForCheckpoint; ++ ++#if 1 ++ nFree = dev->nFreeChunks; ++#else ++ nFree = yaffs_CountFreeChunks(dev); ++#endif ++ ++ nFree += dev->nDeletedFiles; ++ ++ /* Now count the number of dirty chunks in the cache and subtract those */ ++ ++ { ++ int i; ++ for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) { ++ if (dev->srCache[i].dirty) ++ nDirtyCacheChunks++; ++ } ++ } ++ ++ nFree -= nDirtyCacheChunks; ++ ++ nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock); ++ ++ /* Now we figure out how much to reserve for the checkpoint and report that... */ ++ blocksForCheckpoint = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint; ++ if(blocksForCheckpoint < 0) ++ blocksForCheckpoint = 0; ++ ++ nFree -= (blocksForCheckpoint * dev->nChunksPerBlock); ++ ++ if (nFree < 0) ++ nFree = 0; ++ ++ return nFree; ++ ++} ++ ++static int yaffs_freeVerificationFailures; ++ ++static void yaffs_VerifyFreeChunks(yaffs_Device * dev) ++{ ++ int counted; ++ int difference; ++ ++ if(yaffs_SkipVerification(dev)) ++ return; ++ ++ counted = yaffs_CountFreeChunks(dev); ++ ++ difference = dev->nFreeChunks - counted; ++ ++ if (difference) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("Freechunks verification failure %d %d %d" TENDSTR), ++ dev->nFreeChunks, counted, difference)); ++ yaffs_freeVerificationFailures++; ++ } ++} ++ ++/*---------------------------------------- YAFFS test code ----------------------*/ ++ ++#define yaffs_CheckStruct(structure,syze, name) \ ++ if(sizeof(structure) != syze) \ ++ { \ ++ T(YAFFS_TRACE_ALWAYS,(TSTR("%s should be %d but is %d\n" TENDSTR),\ ++ name,syze,sizeof(structure))); \ ++ return YAFFS_FAIL; \ ++ } ++ ++static int yaffs_CheckStructures(void) ++{ ++/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags") */ ++/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion") */ ++/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare") */ ++#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG ++ yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode") ++#endif ++ yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader") ++ ++ return YAFFS_OK; ++} +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_guts.h linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_guts.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_guts.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,902 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_GUTS_H__ ++#define __YAFFS_GUTS_H__ ++ ++#include "devextras.h" ++#include "yportenv.h" ++ ++#define YAFFS_OK 1 ++#define YAFFS_FAIL 0 ++ ++/* Give us a Y=0x59, ++ * Give us an A=0x41, ++ * Give us an FF=0xFF ++ * Give us an S=0x53 ++ * And what have we got... ++ */ ++#define YAFFS_MAGIC 0x5941FF53 ++ ++#define YAFFS_NTNODES_LEVEL0 16 ++#define YAFFS_TNODES_LEVEL0_BITS 4 ++#define YAFFS_TNODES_LEVEL0_MASK 0xf ++ ++#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2) ++#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1) ++#define YAFFS_TNODES_INTERNAL_MASK 0x7 ++#define YAFFS_TNODES_MAX_LEVEL 6 ++ ++#ifndef CONFIG_YAFFS_NO_YAFFS1 ++#define YAFFS_BYTES_PER_SPARE 16 ++#define YAFFS_BYTES_PER_CHUNK 512 ++#define YAFFS_CHUNK_SIZE_SHIFT 9 ++#define YAFFS_CHUNKS_PER_BLOCK 32 ++#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK) ++#endif ++ ++#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024 ++#define YAFFS_MIN_YAFFS2_SPARE_SIZE 32 ++ ++#define YAFFS_MAX_CHUNK_ID 0x000FFFFF ++ ++#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF ++ ++#define YAFFS_ALLOCATION_NOBJECTS 100 ++#define YAFFS_ALLOCATION_NTNODES 100 ++#define YAFFS_ALLOCATION_NLINKS 100 ++ ++#define YAFFS_NOBJECT_BUCKETS 256 ++ ++ ++#define YAFFS_OBJECT_SPACE 0x40000 ++ ++#define YAFFS_CHECKPOINT_VERSION 3 ++ ++#ifdef CONFIG_YAFFS_UNICODE ++#define YAFFS_MAX_NAME_LENGTH 127 ++#define YAFFS_MAX_ALIAS_LENGTH 79 ++#else ++#define YAFFS_MAX_NAME_LENGTH 255 ++#define YAFFS_MAX_ALIAS_LENGTH 159 ++#endif ++ ++#define YAFFS_SHORT_NAME_LENGTH 15 ++ ++/* Some special object ids for pseudo objects */ ++#define YAFFS_OBJECTID_ROOT 1 ++#define YAFFS_OBJECTID_LOSTNFOUND 2 ++#define YAFFS_OBJECTID_UNLINKED 3 ++#define YAFFS_OBJECTID_DELETED 4 ++ ++/* Sseudo object ids for checkpointing */ ++#define YAFFS_OBJECTID_SB_HEADER 0x10 ++#define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20 ++#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21 ++ ++/* */ ++ ++#define YAFFS_MAX_SHORT_OP_CACHES 20 ++ ++#define YAFFS_N_TEMP_BUFFERS 4 ++ ++/* We limit the number attempts at sucessfully saving a chunk of data. ++ * Small-page devices have 32 pages per block; large-page devices have 64. ++ * Default to something in the order of 5 to 10 blocks worth of chunks. ++ */ ++#define YAFFS_WR_ATTEMPTS (5*64) ++ ++/* Sequence numbers are used in YAFFS2 to determine block allocation order. ++ * The range is limited slightly to help distinguish bad numbers from good. ++ * This also allows us to perhaps in the future use special numbers for ++ * special purposes. ++ * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years, ++ * and is a larger number than the lifetime of a 2GB device. ++ */ ++#define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000 ++#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00 ++ ++/* ChunkCache is used for short read/write operations.*/ ++typedef struct { ++ struct yaffs_ObjectStruct *object; ++ int chunkId; ++ int lastUse; ++ int dirty; ++ int nBytes; /* Only valid if the cache is dirty */ ++ int locked; /* Can't push out or flush while locked. */ ++#ifdef CONFIG_YAFFS_YAFFS2 ++ __u8 *data; ++#else ++ __u8 data[YAFFS_BYTES_PER_CHUNK]; ++#endif ++} yaffs_ChunkCache; ++ ++ ++ ++/* Tags structures in RAM ++ * NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise ++ * the structure size will get blown out. ++ */ ++ ++#ifndef CONFIG_YAFFS_NO_YAFFS1 ++typedef struct { ++ unsigned chunkId:20; ++ unsigned serialNumber:2; ++ unsigned byteCount:10; ++ unsigned objectId:18; ++ unsigned ecc:12; ++ unsigned unusedStuff:2; ++ ++} yaffs_Tags; ++ ++typedef union { ++ yaffs_Tags asTags; ++ __u8 asBytes[8]; ++} yaffs_TagsUnion; ++ ++#endif ++ ++/* Stuff used for extended tags in YAFFS2 */ ++ ++typedef enum { ++ YAFFS_ECC_RESULT_UNKNOWN, ++ YAFFS_ECC_RESULT_NO_ERROR, ++ YAFFS_ECC_RESULT_FIXED, ++ YAFFS_ECC_RESULT_UNFIXED ++} yaffs_ECCResult; ++ ++typedef enum { ++ YAFFS_OBJECT_TYPE_UNKNOWN, ++ YAFFS_OBJECT_TYPE_FILE, ++ YAFFS_OBJECT_TYPE_SYMLINK, ++ YAFFS_OBJECT_TYPE_DIRECTORY, ++ YAFFS_OBJECT_TYPE_HARDLINK, ++ YAFFS_OBJECT_TYPE_SPECIAL ++} yaffs_ObjectType; ++ ++#define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL ++ ++typedef struct { ++ ++ unsigned validMarker0; ++ unsigned chunkUsed; /* Status of the chunk: used or unused */ ++ unsigned objectId; /* If 0 then this is not part of an object (unused) */ ++ unsigned chunkId; /* If 0 then this is a header, else a data chunk */ ++ unsigned byteCount; /* Only valid for data chunks */ ++ ++ /* The following stuff only has meaning when we read */ ++ yaffs_ECCResult eccResult; ++ unsigned blockBad; ++ ++ /* YAFFS 1 stuff */ ++ unsigned chunkDeleted; /* The chunk is marked deleted */ ++ unsigned serialNumber; /* Yaffs1 2-bit serial number */ ++ ++ /* YAFFS2 stuff */ ++ unsigned sequenceNumber; /* The sequence number of this block */ ++ ++ /* Extra info if this is an object header (YAFFS2 only) */ ++ ++ unsigned extraHeaderInfoAvailable; /* There is extra info available if this is not zero */ ++ unsigned extraParentObjectId; /* The parent object */ ++ unsigned extraIsShrinkHeader; /* Is it a shrink header? */ ++ unsigned extraShadows; /* Does this shadow another object? */ ++ ++ yaffs_ObjectType extraObjectType; /* What object type? */ ++ ++ unsigned extraFileLength; /* Length if it is a file */ ++ unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */ ++ ++ unsigned validMarker1; ++ ++} yaffs_ExtendedTags; ++ ++/* Spare structure for YAFFS1 */ ++typedef struct { ++ __u8 tagByte0; ++ __u8 tagByte1; ++ __u8 tagByte2; ++ __u8 tagByte3; ++ __u8 pageStatus; /* set to 0 to delete the chunk */ ++ __u8 blockStatus; ++ __u8 tagByte4; ++ __u8 tagByte5; ++ __u8 ecc1[3]; ++ __u8 tagByte6; ++ __u8 tagByte7; ++ __u8 ecc2[3]; ++} yaffs_Spare; ++ ++/*Special structure for passing through to mtd */ ++struct yaffs_NANDSpare { ++ yaffs_Spare spare; ++ int eccres1; ++ int eccres2; ++}; ++ ++/* Block data in RAM */ ++ ++typedef enum { ++ YAFFS_BLOCK_STATE_UNKNOWN = 0, ++ ++ YAFFS_BLOCK_STATE_SCANNING, ++ YAFFS_BLOCK_STATE_NEEDS_SCANNING, ++ /* The block might have something on it (ie it is allocating or full, perhaps empty) ++ * but it needs to be scanned to determine its true state. ++ * This state is only valid during yaffs_Scan. ++ * NB We tolerate empty because the pre-scanner might be incapable of deciding ++ * However, if this state is returned on a YAFFS2 device, then we expect a sequence number ++ */ ++ ++ YAFFS_BLOCK_STATE_EMPTY, ++ /* This block is empty */ ++ ++ YAFFS_BLOCK_STATE_ALLOCATING, ++ /* This block is partially allocated. ++ * At least one page holds valid data. ++ * This is the one currently being used for page ++ * allocation. Should never be more than one of these ++ */ ++ ++ YAFFS_BLOCK_STATE_FULL, ++ /* All the pages in this block have been allocated. ++ */ ++ ++ YAFFS_BLOCK_STATE_DIRTY, ++ /* All pages have been allocated and deleted. ++ * Erase me, reuse me. ++ */ ++ ++ YAFFS_BLOCK_STATE_CHECKPOINT, ++ /* This block is assigned to holding checkpoint data. ++ */ ++ ++ YAFFS_BLOCK_STATE_COLLECTING, ++ /* This block is being garbage collected */ ++ ++ YAFFS_BLOCK_STATE_DEAD ++ /* This block has failed and is not in use */ ++} yaffs_BlockState; ++ ++#define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1) ++ ++ ++typedef struct { ++ ++ int softDeletions:10; /* number of soft deleted pages */ ++ int pagesInUse:10; /* number of pages in use */ ++ yaffs_BlockState blockState:4; /* One of the above block states */ ++ __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */ ++ /* and retire the block. */ ++ __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */ ++ __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block. ++ It should be prioritised for GC */ ++ __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */ ++ ++#ifdef CONFIG_YAFFS_YAFFS2 ++ __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */ ++ __u32 sequenceNumber; /* block sequence number for yaffs2 */ ++#endif ++ ++} yaffs_BlockInfo; ++ ++/* -------------------------- Object structure -------------------------------*/ ++/* This is the object structure as stored on NAND */ ++ ++typedef struct { ++ yaffs_ObjectType type; ++ ++ /* Apply to everything */ ++ int parentObjectId; ++ __u16 sum__NoLongerUsed; /* checksum of name. No longer used */ ++ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; ++ ++ /* Thes following apply to directories, files, symlinks - not hard links */ ++ __u32 yst_mode; /* protection */ ++ ++#ifdef CONFIG_YAFFS_WINCE ++ __u32 notForWinCE[5]; ++#else ++ __u32 yst_uid; ++ __u32 yst_gid; ++ __u32 yst_atime; ++ __u32 yst_mtime; ++ __u32 yst_ctime; ++#endif ++ ++ /* File size applies to files only */ ++ int fileSize; ++ ++ /* Equivalent object id applies to hard links only. */ ++ int equivalentObjectId; ++ ++ /* Alias is for symlinks only. */ ++ YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1]; ++ ++ __u32 yst_rdev; /* device stuff for block and char devices (major/min) */ ++ ++#ifdef CONFIG_YAFFS_WINCE ++ __u32 win_ctime[2]; ++ __u32 win_atime[2]; ++ __u32 win_mtime[2]; ++ __u32 roomToGrow[4]; ++#else ++ __u32 roomToGrow[10]; ++#endif ++ ++ int shadowsObject; /* This object header shadows the specified object if > 0 */ ++ ++ /* isShrink applies to object headers written when we shrink the file (ie resize) */ ++ __u32 isShrink; ++ ++} yaffs_ObjectHeader; ++ ++/*--------------------------- Tnode -------------------------- */ ++ ++union yaffs_Tnode_union { ++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG ++ union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1]; ++#else ++ union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL]; ++#endif ++/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */ ++ ++}; ++ ++typedef union yaffs_Tnode_union yaffs_Tnode; ++ ++struct yaffs_TnodeList_struct { ++ struct yaffs_TnodeList_struct *next; ++ yaffs_Tnode *tnodes; ++}; ++ ++typedef struct yaffs_TnodeList_struct yaffs_TnodeList; ++ ++/*------------------------ Object -----------------------------*/ ++/* An object can be one of: ++ * - a directory (no data, has children links ++ * - a regular file (data.... not prunes :->). ++ * - a symlink [symbolic link] (the alias). ++ * - a hard link ++ */ ++ ++typedef struct { ++ __u32 fileSize; ++ __u32 scannedFileSize; ++ __u32 shrinkSize; ++ int topLevel; ++ yaffs_Tnode *top; ++} yaffs_FileStructure; ++ ++typedef struct { ++ struct list_head children; /* list of child links */ ++} yaffs_DirectoryStructure; ++ ++typedef struct { ++ YCHAR *alias; ++} yaffs_SymLinkStructure; ++ ++typedef struct { ++ struct yaffs_ObjectStruct *equivalentObject; ++ __u32 equivalentObjectId; ++} yaffs_HardLinkStructure; ++ ++typedef union { ++ yaffs_FileStructure fileVariant; ++ yaffs_DirectoryStructure directoryVariant; ++ yaffs_SymLinkStructure symLinkVariant; ++ yaffs_HardLinkStructure hardLinkVariant; ++} yaffs_ObjectVariant; ++ ++struct yaffs_ObjectStruct { ++ __u8 deleted:1; /* This should only apply to unlinked files. */ ++ __u8 softDeleted:1; /* it has also been soft deleted */ ++ __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/ ++ __u8 fake:1; /* A fake object has no presence on NAND. */ ++ __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */ ++ __u8 unlinkAllowed:1; ++ __u8 dirty:1; /* the object needs to be written to flash */ ++ __u8 valid:1; /* When the file system is being loaded up, this ++ * object might be created before the data ++ * is available (ie. file data records appear before the header). ++ */ ++ __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */ ++ ++ __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is ++ * still in the inode cache. Free of object is defered. ++ * until the inode is released. ++ */ ++ ++ __u8 serial; /* serial number of chunk in NAND. Cached here */ ++ __u16 sum; /* sum of the name to speed searching */ ++ ++ struct yaffs_DeviceStruct *myDev; /* The device I'm on */ ++ ++ struct list_head hashLink; /* list of objects in this hash bucket */ ++ ++ struct list_head hardLinks; /* all the equivalent hard linked objects */ ++ ++ /* directory structure stuff */ ++ /* also used for linking up the free list */ ++ struct yaffs_ObjectStruct *parent; ++ struct list_head siblings; ++ ++ /* Where's my object header in NAND? */ ++ int chunkId; ++ ++ int nDataChunks; /* Number of data chunks attached to the file. */ ++ ++ __u32 objectId; /* the object id value */ ++ ++ __u32 yst_mode; ++ ++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM ++ YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1]; ++#endif ++ ++#ifndef __KERNEL__ ++ __u32 inUse; ++#endif ++ ++#ifdef CONFIG_YAFFS_WINCE ++ __u32 win_ctime[2]; ++ __u32 win_mtime[2]; ++ __u32 win_atime[2]; ++#else ++ __u32 yst_uid; ++ __u32 yst_gid; ++ __u32 yst_atime; ++ __u32 yst_mtime; ++ __u32 yst_ctime; ++#endif ++ ++ __u32 yst_rdev; ++ ++#ifdef __KERNEL__ ++ struct inode *myInode; ++ ++#endif ++ ++ yaffs_ObjectType variantType; ++ ++ yaffs_ObjectVariant variant; ++ ++}; ++ ++typedef struct yaffs_ObjectStruct yaffs_Object; ++ ++struct yaffs_ObjectList_struct { ++ yaffs_Object *objects; ++ struct yaffs_ObjectList_struct *next; ++}; ++ ++typedef struct yaffs_ObjectList_struct yaffs_ObjectList; ++ ++typedef struct { ++ struct list_head list; ++ int count; ++} yaffs_ObjectBucket; ++ ++ ++/* yaffs_CheckpointObject holds the definition of an object as dumped ++ * by checkpointing. ++ */ ++ ++typedef struct { ++ int structType; ++ __u32 objectId; ++ __u32 parentId; ++ int chunkId; ++ ++ yaffs_ObjectType variantType:3; ++ __u8 deleted:1; ++ __u8 softDeleted:1; ++ __u8 unlinked:1; ++ __u8 fake:1; ++ __u8 renameAllowed:1; ++ __u8 unlinkAllowed:1; ++ __u8 serial; ++ ++ int nDataChunks; ++ __u32 fileSizeOrEquivalentObjectId; ++ ++}yaffs_CheckpointObject; ++ ++/*--------------------- Temporary buffers ---------------- ++ * ++ * These are chunk-sized working buffers. Each device has a few ++ */ ++ ++typedef struct { ++ __u8 *buffer; ++ int line; /* track from whence this buffer was allocated */ ++ int maxLine; ++} yaffs_TempBuffer; ++ ++/*----------------- Device ---------------------------------*/ ++ ++struct yaffs_DeviceStruct { ++ struct list_head devList; ++ const char *name; ++ ++ /* Entry parameters set up way early. Yaffs sets up the rest.*/ ++ int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */ ++ int nChunksPerBlock; /* does not need to be a power of 2 */ ++ int nBytesPerSpare; /* spare area size */ ++ int startBlock; /* Start block we're allowed to use */ ++ int endBlock; /* End block we're allowed to use */ ++ int nReservedBlocks; /* We want this tuneable so that we can reduce */ ++ /* reserved blocks on NOR and RAM. */ ++ ++ ++ /* Stuff used by the shared space checkpointing mechanism */ ++ /* If this value is zero, then this mechanism is disabled */ ++ ++ int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */ ++ ++ ++ ++ ++ int nShortOpCaches; /* If <= 0, then short op caching is disabled, else ++ * the number of short op caches (don't use too many) ++ */ ++ ++ int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */ ++ ++ int useNANDECC; /* Flag to decide whether or not to use NANDECC */ ++ ++ void *genericDevice; /* Pointer to device context ++ * On an mtd this holds the mtd pointer. ++ */ ++ void *superBlock; ++ ++ /* NAND access functions (Must be set before calling YAFFS)*/ ++ ++ int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev, ++ int chunkInNAND, const __u8 * data, ++ const yaffs_Spare * spare); ++ int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev, ++ int chunkInNAND, __u8 * data, ++ yaffs_Spare * spare); ++ int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev, ++ int blockInNAND); ++ int (*initialiseNAND) (struct yaffs_DeviceStruct * dev); ++ ++#ifdef CONFIG_YAFFS_YAFFS2 ++ int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev, ++ int chunkInNAND, const __u8 * data, ++ const yaffs_ExtendedTags * tags); ++ int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct * dev, ++ int chunkInNAND, __u8 * data, ++ yaffs_ExtendedTags * tags); ++ int (*markNANDBlockBad) (struct yaffs_DeviceStruct * dev, int blockNo); ++ int (*queryNANDBlock) (struct yaffs_DeviceStruct * dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber); ++#endif ++ ++ int isYaffs2; ++ ++ /* The removeObjectCallback function must be supplied by OS flavours that ++ * need it. The Linux kernel does not use this, but yaffs direct does use ++ * it to implement the faster readdir ++ */ ++ void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj); ++ ++ /* Callback to mark the superblock dirsty */ ++ void (*markSuperBlockDirty)(void * superblock); ++ ++ int wideTnodesDisabled; /* Set to disable wide tnodes */ ++ ++ ++ /* End of stuff that must be set before initialisation. */ ++ ++ /* Checkpoint control. Can be set before or after initialisation */ ++ __u8 skipCheckpointRead; ++ __u8 skipCheckpointWrite; ++ ++ /* Runtime parameters. Set up by YAFFS. */ ++ ++ __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */ ++ __u16 chunkGroupSize; /* == 2^^chunkGroupBits */ ++ ++ /* Stuff to support wide tnodes */ ++ __u32 tnodeWidth; ++ __u32 tnodeMask; ++ ++ /* Stuff to support various file offses to chunk/offset translations */ ++ /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */ ++ __u32 crumbMask; ++ __u32 crumbShift; ++ __u32 crumbsPerChunk; ++ ++ /* Straight shifting for nDataBytesPerChunk being a power of 2 */ ++ __u32 chunkShift; ++ __u32 chunkMask; ++ ++ ++#ifdef __KERNEL__ ++ ++ struct semaphore sem; /* Semaphore for waiting on erasure.*/ ++ struct semaphore grossLock; /* Gross locking semaphore */ ++ __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer ++ * at compile time so we have to allocate it. ++ */ ++ void (*putSuperFunc) (struct super_block * sb); ++#endif ++ ++ int isMounted; ++ ++ int isCheckpointed; ++ ++ ++ /* Stuff to support block offsetting to support start block zero */ ++ int internalStartBlock; ++ int internalEndBlock; ++ int blockOffset; ++ int chunkOffset; ++ ++ ++ /* Runtime checkpointing stuff */ ++ int checkpointPageSequence; /* running sequence number of checkpoint pages */ ++ int checkpointByteCount; ++ int checkpointByteOffset; ++ __u8 *checkpointBuffer; ++ int checkpointOpenForWrite; ++ int blocksInCheckpoint; ++ int checkpointCurrentChunk; ++ int checkpointCurrentBlock; ++ int checkpointNextBlock; ++ int *checkpointBlockList; ++ int checkpointMaxBlocks; ++ __u32 checkpointSum; ++ __u32 checkpointXor; ++ ++ /* Block Info */ ++ yaffs_BlockInfo *blockInfo; ++ __u8 *chunkBits; /* bitmap of chunks in use */ ++ unsigned blockInfoAlt:1; /* was allocated using alternative strategy */ ++ unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */ ++ int chunkBitmapStride; /* Number of bytes of chunkBits per block. ++ * Must be consistent with nChunksPerBlock. ++ */ ++ ++ int nErasedBlocks; ++ int allocationBlock; /* Current block being allocated off */ ++ __u32 allocationPage; ++ int allocationBlockFinder; /* Used to search for next allocation block */ ++ ++ /* Runtime state */ ++ int nTnodesCreated; ++ yaffs_Tnode *freeTnodes; ++ int nFreeTnodes; ++ yaffs_TnodeList *allocatedTnodeList; ++ ++ int isDoingGC; ++ ++ int nObjectsCreated; ++ yaffs_Object *freeObjects; ++ int nFreeObjects; ++ ++ yaffs_ObjectList *allocatedObjectList; ++ ++ yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS]; ++ ++ int nFreeChunks; ++ ++ int currentDirtyChecker; /* Used to find current dirtiest block */ ++ ++ __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ ++ int nonAggressiveSkip; /* GC state/mode */ ++ ++ /* Statistcs */ ++ int nPageWrites; ++ int nPageReads; ++ int nBlockErasures; ++ int nErasureFailures; ++ int nGCCopies; ++ int garbageCollections; ++ int passiveGarbageCollections; ++ int nRetriedWrites; ++ int nRetiredBlocks; ++ int eccFixed; ++ int eccUnfixed; ++ int tagsEccFixed; ++ int tagsEccUnfixed; ++ int nDeletions; ++ int nUnmarkedDeletions; ++ ++ int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */ ++ ++ /* Special directories */ ++ yaffs_Object *rootDir; ++ yaffs_Object *lostNFoundDir; ++ ++ /* Buffer areas for storing data to recover from write failures TODO ++ * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK]; ++ * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK]; ++ */ ++ ++ int bufferedBlock; /* Which block is buffered here? */ ++ int doingBufferedBlockRewrite; ++ ++ yaffs_ChunkCache *srCache; ++ int srLastUse; ++ ++ int cacheHits; ++ ++ /* Stuff for background deletion and unlinked files.*/ ++ yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */ ++ yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */ ++ yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/ ++ int nDeletedFiles; /* Count of files awaiting deletion;*/ ++ int nUnlinkedFiles; /* Count of unlinked files. */ ++ int nBackgroundDeletions; /* Count of background deletions. */ ++ ++ ++ yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS]; ++ int maxTemp; ++ int unmanagedTempAllocations; ++ int unmanagedTempDeallocations; ++ ++ /* yaffs2 runtime stuff */ ++ unsigned sequenceNumber; /* Sequence number of currently allocating block */ ++ unsigned oldestDirtySequence; ++ ++}; ++ ++typedef struct yaffs_DeviceStruct yaffs_Device; ++ ++/* The static layout of bllock usage etc is stored in the super block header */ ++typedef struct { ++ int StructType; ++ int version; ++ int checkpointStartBlock; ++ int checkpointEndBlock; ++ int startBlock; ++ int endBlock; ++ int rfu[100]; ++} yaffs_SuperBlockHeader; ++ ++/* The CheckpointDevice structure holds the device information that changes at runtime and ++ * must be preserved over unmount/mount cycles. ++ */ ++typedef struct { ++ int structType; ++ int nErasedBlocks; ++ int allocationBlock; /* Current block being allocated off */ ++ __u32 allocationPage; ++ int nFreeChunks; ++ ++ int nDeletedFiles; /* Count of files awaiting deletion;*/ ++ int nUnlinkedFiles; /* Count of unlinked files. */ ++ int nBackgroundDeletions; /* Count of background deletions. */ ++ ++ /* yaffs2 runtime stuff */ ++ unsigned sequenceNumber; /* Sequence number of currently allocating block */ ++ unsigned oldestDirtySequence; ++ ++} yaffs_CheckpointDevice; ++ ++ ++typedef struct { ++ int structType; ++ __u32 magic; ++ __u32 version; ++ __u32 head; ++} yaffs_CheckpointValidity; ++ ++/* Function to manipulate block info */ ++static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk) ++{ ++ if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR), ++ blk)); ++ YBUG(); ++ } ++ return &dev->blockInfo[blk - dev->internalStartBlock]; ++} ++ ++/*----------------------- YAFFS Functions -----------------------*/ ++ ++int yaffs_GutsInitialise(yaffs_Device * dev); ++void yaffs_Deinitialise(yaffs_Device * dev); ++ ++int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev); ++ ++int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName, ++ yaffs_Object * newDir, const YCHAR * newName); ++ ++int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name); ++int yaffs_DeleteFile(yaffs_Object * obj); ++ ++int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize); ++int yaffs_GetObjectFileLength(yaffs_Object * obj); ++int yaffs_GetObjectInode(yaffs_Object * obj); ++unsigned yaffs_GetObjectType(yaffs_Object * obj); ++int yaffs_GetObjectLinkCount(yaffs_Object * obj); ++ ++int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr); ++int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr); ++ ++/* File operations */ ++int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset, ++ int nBytes); ++int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset, ++ int nBytes, int writeThrough); ++int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize); ++ ++yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid); ++int yaffs_FlushFile(yaffs_Object * obj, int updateTime); ++ ++/* Flushing and checkpointing */ ++void yaffs_FlushEntireDeviceCache(yaffs_Device *dev); ++ ++int yaffs_CheckpointSave(yaffs_Device *dev); ++int yaffs_CheckpointRestore(yaffs_Device *dev); ++ ++/* Directory operations */ ++yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid); ++yaffs_Object *yaffs_FindObjectByName(yaffs_Object * theDir, const YCHAR * name); ++int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir, ++ int (*fn) (yaffs_Object *)); ++ ++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number); ++ ++/* Link operations */ ++yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name, ++ yaffs_Object * equivalentObject); ++ ++yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj); ++ ++/* Symlink operations */ ++yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid, ++ const YCHAR * alias); ++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj); ++ ++/* Special inodes (fifos, sockets and devices) */ ++yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name, ++ __u32 mode, __u32 uid, __u32 gid, __u32 rdev); ++ ++/* Special directories */ ++yaffs_Object *yaffs_Root(yaffs_Device * dev); ++yaffs_Object *yaffs_LostNFound(yaffs_Device * dev); ++ ++#ifdef CONFIG_YAFFS_WINCE ++/* CONFIG_YAFFS_WINCE special stuff */ ++void yfsd_WinFileTimeNow(__u32 target[2]); ++#endif ++ ++#ifdef __KERNEL__ ++ ++void yaffs_HandleDeferedFree(yaffs_Object * obj); ++#endif ++ ++/* Debug dump */ ++int yaffs_DumpObject(yaffs_Object * obj); ++ ++void yaffs_GutsTest(yaffs_Device * dev); ++ ++/* A few useful functions */ ++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags); ++void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn); ++int yaffs_CheckFF(__u8 * buffer, int nBytes); ++void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,241 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++const char *yaffs_mtdif_c_version = ++ "$Id: yaffs_mtdif.c,v 1.19 2007-02-14 01:09:06 wookey Exp $"; ++ ++#include "yportenv.h" ++ ++ ++#include "yaffs_mtdif.h" ++ ++#include "linux/mtd/mtd.h" ++#include "linux/types.h" ++#include "linux/time.h" ++#include "linux/mtd/nand.h" ++ ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18)) ++static struct nand_oobinfo yaffs_oobinfo = { ++ .useecc = 1, ++ .eccbytes = 6, ++ .eccpos = {8, 9, 10, 13, 14, 15} ++}; ++ ++static struct nand_oobinfo yaffs_noeccinfo = { ++ .useecc = 0, ++}; ++#endif ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob) ++{ ++ oob[0] = spare->tagByte0; ++ oob[1] = spare->tagByte1; ++ oob[2] = spare->tagByte2; ++ oob[3] = spare->tagByte3; ++ oob[4] = spare->tagByte4; ++ oob[5] = spare->tagByte5 & 0x3f; ++ oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80; ++ oob[5] |= spare->pageStatus == 0 ? 0: 0x40; ++ oob[6] = spare->tagByte6; ++ oob[7] = spare->tagByte7; ++} ++ ++static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob) ++{ ++ struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare; ++ spare->tagByte0 = oob[0]; ++ spare->tagByte1 = oob[1]; ++ spare->tagByte2 = oob[2]; ++ spare->tagByte3 = oob[3]; ++ spare->tagByte4 = oob[4]; ++ spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f; ++ spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y'; ++ spare->pageStatus = oob[5] & 0x40 ? 0xff : 0; ++ spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff; ++ spare->tagByte6 = oob[6]; ++ spare->tagByte7 = oob[7]; ++ spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff; ++ ++ nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */ ++} ++#endif ++ ++int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, const yaffs_Spare * spare) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ struct mtd_oob_ops ops; ++#endif ++ size_t dummy; ++ int retval = 0; ++ ++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ __u8 spareAsBytes[8]; /* OOB */ ++ ++ if (data && !spare) ++ retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data); ++ else if (spare) { ++ if (dev->useNANDECC) { ++ translate_spare2oob(spare, spareAsBytes); ++ ops.mode = MTD_OOB_AUTO; ++ ops.ooblen = 8; /* temp hack */ ++ } else { ++ ops.mode = MTD_OOB_RAW; ++ ops.ooblen = YAFFS_BYTES_PER_SPARE; ++ } ++ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; ++ ops.datbuf = (u8 *)data; ++ ops.ooboffs = 0; ++ ops.oobbuf = spareAsBytes; ++ retval = mtd->write_oob(mtd, addr, &ops); ++ } ++#else ++ __u8 *spareAsBytes = (__u8 *) spare; ++ ++ if (data && spare) { ++ if (dev->useNANDECC) ++ retval = ++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_oobinfo); ++ else ++ retval = ++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_noeccinfo); ++ } else { ++ if (data) ++ retval = ++ mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, ++ data); ++ if (spare) ++ retval = ++ mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, ++ &dummy, spareAsBytes); ++ } ++#endif ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, ++ yaffs_Spare * spare) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ struct mtd_oob_ops ops; ++#endif ++ size_t dummy; ++ int retval = 0; ++ ++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ __u8 spareAsBytes[8]; /* OOB */ ++ ++ if (data && !spare) ++ retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data); ++ else if (spare) { ++ if (dev->useNANDECC) { ++ ops.mode = MTD_OOB_AUTO; ++ ops.ooblen = 8; /* temp hack */ ++ } else { ++ ops.mode = MTD_OOB_RAW; ++ ops.ooblen = YAFFS_BYTES_PER_SPARE; ++ } ++ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen; ++ ops.datbuf = data; ++ ops.ooboffs = 0; ++ ops.oobbuf = spareAsBytes; ++ retval = mtd->read_oob(mtd, addr, &ops); ++ if (dev->useNANDECC) ++ translate_oob2spare(spare, spareAsBytes); ++ } ++#else ++ __u8 *spareAsBytes = (__u8 *) spare; ++ ++ if (data && spare) { ++ if (dev->useNANDECC) { ++ /* Careful, this call adds 2 ints */ ++ /* to the end of the spare data. Calling function */ ++ /* should allocate enough memory for spare, */ ++ /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */ ++ retval = ++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_oobinfo); ++ } else { ++ retval = ++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, spareAsBytes, ++ &yaffs_noeccinfo); ++ } ++ } else { ++ if (data) ++ retval = ++ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, ++ data); ++ if (spare) ++ retval = ++ mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE, ++ &dummy, spareAsBytes); ++ } ++#endif ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++ __u32 addr = ++ ((loff_t) blockNumber) * dev->nDataBytesPerChunk ++ * dev->nChunksPerBlock; ++ struct erase_info ei; ++ int retval = 0; ++ ++ ei.mtd = mtd; ++ ei.addr = addr; ++ ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock; ++ ei.time = 1000; ++ ei.retries = 2; ++ ei.callback = NULL; ++ ei.priv = (u_long) dev; ++ ++ /* Todo finish off the ei if required */ ++ ++ sema_init(&dev->sem, 0); ++ ++ retval = mtd->erase(mtd, &ei); ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd_InitialiseNAND(yaffs_Device * dev) ++{ ++ return YAFFS_OK; ++} ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.h linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,27 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_MTDIF_H__ ++#define __YAFFS_MTDIF_H__ ++ ++#include "yaffs_guts.h" ++ ++int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, const yaffs_Spare * spare); ++int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data, ++ yaffs_Spare * spare); ++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber); ++int nandmtd_InitialiseNAND(yaffs_Device * dev); ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1-compat.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1-compat.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1-compat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1-compat.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,434 @@ ++From ian@brightstareng.com Fri May 18 15:06:49 2007 ++From ian@brightstareng.com Fri May 18 15:08:21 2007 ++Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com) ++ by apollo.linkchoose.co.uk with esmtp (Exim 4.60) ++ (envelope-from <ian@brightstareng.com>) ++ id 1Hp380-00011e-T6 ++ for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100 ++Received: from localhost (localhost.localdomain [127.0.0.1]) ++ by zebra.brightstareng.com (Postfix) with ESMTP ++ id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT) ++Received: from zebra.brightstareng.com ([127.0.0.1]) ++ by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP ++ id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT) ++Received: from pippin (unknown [192.168.1.25]) ++ by zebra.brightstareng.com (Postfix) with ESMTP ++ id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT) ++From: Ian McDonnell <ian@brightstareng.com> ++To: David Goodenough <david.goodenough@linkchoose.co.uk> ++Subject: Re: something tested this time -- yaffs_mtdif1-compat.c ++Date: Fri, 18 May 2007 10:06:49 -0400 ++User-Agent: KMail/1.9.1 ++References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk> ++In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk> ++Cc: Andrea Conti <alyf@alyf.net>, ++ Charles Manning <manningc2@actrix.gen.nz> ++MIME-Version: 1.0 ++Content-Type: Multipart/Mixed; ++ boundary="Boundary-00=_5LbTGmt62YoutxM" ++Message-Id: <200705181006.49860.ian@brightstareng.com> ++X-Virus-Scanned: by amavisd-new at brightstareng.com ++Status: R ++X-Status: NT ++X-KMail-EncryptionState: ++X-KMail-SignatureState: ++X-KMail-MDN-Sent: ++ ++--Boundary-00=_5LbTGmt62YoutxM ++Content-Type: text/plain; ++ charset="iso-8859-15" ++Content-Transfer-Encoding: 7bit ++Content-Disposition: inline ++ ++David, Andrea, ++ ++On Friday 18 May 2007 08:34, you wrote: ++> Yea team. With this fix in place (I put it in the wrong place ++> at first) I can now mount and ls the Yaffs partition without ++> an error messages! ++ ++Good news! ++ ++Attached is a newer yaffs_mtdif1.c with a bandaid to help the ++2.6.18 and 2.6.19 versions of MTD not trip on the oob read. ++See the LINUX_VERSION_CODE conditional in ++nandmtd1_ReadChunkWithTagsFromNAND. ++ ++-imcd ++ ++--Boundary-00=_5LbTGmt62YoutxM ++Content-Type: text/x-csrc; ++ charset="iso-8859-15"; ++ name="yaffs_mtdif1.c" ++Content-Transfer-Encoding: 7bit ++Content-Disposition: attachment; ++ filename="yaffs_mtdif1.c" ++ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. ++ * ++ * Copyright (C) 2002 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* ++ * This module provides the interface between yaffs_nand.c and the ++ * MTD API. This version is used when the MTD interface supports the ++ * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, ++ * and we have small-page NAND device. ++ * ++ * These functions are invoked via function pointers in yaffs_nand.c. ++ * This replaces functionality provided by functions in yaffs_mtdif.c ++ * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are ++ * called in yaffs_mtdif.c when the function pointers are NULL. ++ * We assume the MTD layer is performing ECC (useNANDECC is true). ++ */ ++ ++#include "yportenv.h" ++#include "yaffs_guts.h" ++#include "yaffs_packedtags1.h" ++#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC ++ ++#include "linux/kernel.h" ++#include "linux/version.h" ++#include "linux/types.h" ++#include "linux/mtd/mtd.h" ++ ++/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ ++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $"; ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++# define YTAG1_SIZE 8 ++#else ++# define YTAG1_SIZE 9 ++#endif ++ ++#if 0 ++/* Use the following nand_ecclayout with MTD when using ++ * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. ++ * If you have existing Yaffs images and the byte order differs from this, ++ * adjust 'oobfree' to match your existing Yaffs data. ++ * ++ * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the ++ * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to ++ * the 9th byte. ++ * ++ * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 ++ * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P ++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus ++ * byte and B is the small-page bad-block indicator byte. ++ */ ++static struct nand_ecclayout nand_oob_16 = { ++ .eccbytes = 6, ++ .eccpos = { 8, 9, 10, 13, 14, 15 }, ++ .oobavail = 9, ++ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } ++}; ++#endif ++ ++/* Write a chunk (page) of data to NAND. ++ * ++ * Caller always provides ExtendedTags data which are converted to a more ++ * compact (packed) form for storage in NAND. A mini-ECC runs over the ++ * contents of the tags meta-data; used to valid the tags when read. ++ * ++ * - Pack ExtendedTags to PackedTags1 form ++ * - Compute mini-ECC for PackedTags1 ++ * - Write data and packed tags to NAND. ++ * ++ * Note: Due to the use of the PackedTags1 meta-data which does not include ++ * a full sequence number (as found in the larger PackedTags2 form) it is ++ * necessary for Yaffs to re-write a chunk/page (just once) to mark it as ++ * discarded and dirty. This is not ideal: newer NAND parts are supposed ++ * to be written just once. When Yaffs performs this operation, this ++ * function is called with a NULL data pointer -- calling MTD write_oob ++ * without data is valid usage (2.6.17). ++ * ++ * Any underlying MTD error results in YAFFS_FAIL. ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, ++ int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ ++ /* we assume that PackedTags1 and yaffs_Tags are compatible */ ++ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); ++ compile_time_assertion(sizeof(yaffs_Tags) == 8); ++ ++ yaffs_PackTags1(&pt1, etags); ++ yaffs_CalcTagsECC((yaffs_Tags *)&pt1); ++ ++ /* When deleting a chunk, the upper layer provides only skeletal ++ * etags, one with chunkDeleted set. However, we need to update the ++ * tags, not erase them completely. So we use the NAND write property ++ * that only zeroed-bits stick and set tag bytes to all-ones and ++ * zero just the (not) deleted bit. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* clear delete status bit to indicate deleted */ ++ pt1.deleted = 0; ++ } ++#else ++ ((__u8 *)&pt1)[8] = 0xff; ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* zero pageStatus byte to indicate deleted */ ++ ((__u8 *)&pt1)[8] = 0; ++ } ++#endif ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = (__u8 *)data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++ retval = mtd->write_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "write_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ return retval ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Return with empty ExtendedTags but add eccResult. ++ */ ++static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) ++{ ++ if (etags) { ++ memset(etags, 0, sizeof(*etags)); ++ etags->eccResult = eccResult; ++ } ++ return retval; ++} ++ ++/* Read a chunk (page) from NAND. ++ * ++ * Caller expects ExtendedTags data to be usable even on error; that is, ++ * all members except eccResult and blockBad are zeroed. ++ * ++ * - Check ECC results for data (if applicable) ++ * - Check for blank/erased block (return empty ExtendedTags if blank) ++ * - Check the PackedTags1 mini-ECC (correct if necessary/possible) ++ * - Convert PackedTags1 to ExtendedTags ++ * - Update eccResult and blockBad members to refect state. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, ++ int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ int eccres = YAFFS_ECC_RESULT_NO_ERROR; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ int deleted; ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) ++ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug; ++ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL. ++ */ ++ ops.len = (ops.datbuf) ? ops.len : ops.ooblen; ++#endif ++ /* Read page and oob using MTD. ++ * Check status and determine ECC result. ++ */ ++ retval = mtd->read_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "read_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ ++ switch (retval) { ++ case 0: ++ /* no error */ ++ break; ++ ++ case -EUCLEAN: ++ /* MTD's ECC fixed the data */ ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ dev->eccFixed++; ++ break; ++ ++ case -EBADMSG: ++ /* MTD's ECC could not fix the data */ ++ dev->eccUnfixed++; ++ /* fall into... */ ++ default: ++ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); ++ etags->blockBad = (mtd->block_isbad)(mtd, addr); ++ return YAFFS_FAIL; ++ } ++ ++ /* Check for a blank/erased chunk. ++ */ ++ if (yaffs_CheckFF((__u8 *)&pt1, 8)) { ++ /* when blank, upper layers want eccResult to be <= NO_ERROR */ ++ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); ++ } ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ /* Read deleted status (bit) then return it to it's non-deleted ++ * state before performing tags mini-ECC check. pt1.deleted is ++ * inverted. ++ */ ++ deleted = !pt1.deleted; ++ pt1.deleted = 1; ++#else ++ (void) deleted; /* not used */ ++#endif ++ ++ /* Check the packed tags mini-ECC and correct if necessary/possible. ++ */ ++ retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); ++ switch (retval) { ++ case 0: ++ /* no tags error, use MTD result */ ++ break; ++ case 1: ++ /* recovered tags-ECC error */ ++ dev->tagsEccFixed++; ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ break; ++ default: ++ /* unrecovered tags-ECC error */ ++ dev->tagsEccUnfixed++; ++ return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); ++ } ++ ++ /* Unpack the tags to extended form and set ECC result. ++ * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] ++ */ ++ pt1.shouldBeFF = 0xFFFFFFFF; ++ yaffs_UnpackTags1(etags, &pt1); ++ etags->eccResult = eccres; ++ ++ /* Set deleted state. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ etags->chunkDeleted = deleted; ++#else ++ etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); ++#endif ++ return YAFFS_OK; ++} ++ ++/* Mark a block bad. ++ * ++ * This is a persistant state. ++ * Use of this function should be rare. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; ++ int retval; ++ ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); ++ ++ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); ++ return (retval) ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Check any MTD prerequists. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++static int nandmtd1_TestPrerequists(struct mtd_info * mtd) ++{ ++ /* 2.6.18 has mtd->ecclayout->oobavail */ ++ /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ ++ int oobavail = mtd->ecclayout->oobavail; ++ ++ if (oobavail < YTAG1_SIZE) { ++ yaffs_trace(YAFFS_TRACE_ERROR, ++ "mtd device has only %d bytes for tags, need %d", ++ oobavail, YTAG1_SIZE); ++ return YAFFS_FAIL; ++ } ++ return YAFFS_OK; ++} ++ ++/* Query for the current state of a specific block. ++ * ++ * Examine the tags of the first chunk of the block and return the state: ++ * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad ++ * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use ++ * - YAFFS_BLOCK_STATE_EMPTY, the block is clean ++ * ++ * Always returns YAFFS_OK. ++ */ ++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * pState, int *pSequenceNumber) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkNo = blockNo * dev->nChunksPerBlock; ++ yaffs_ExtendedTags etags; ++ int state = YAFFS_BLOCK_STATE_DEAD; ++ int seqnum = 0; ++ int retval; ++ ++ /* We don't yet have a good place to test for MTD config prerequists. ++ * Do it here as we are called during the initial scan. ++ */ ++ if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { ++ return YAFFS_FAIL; ++ } ++ ++ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); ++ if (etags.blockBad) { ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, ++ "block %d is marked bad", blockNo); ++ state = YAFFS_BLOCK_STATE_DEAD; ++ } ++ else if (etags.chunkUsed) { ++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; ++ seqnum = etags.sequenceNumber; ++ } ++ else { ++ state = YAFFS_BLOCK_STATE_EMPTY; ++ } ++ ++ *pState = state; ++ *pSequenceNumber = seqnum; ++ ++ /* query always succeeds */ ++ return YAFFS_OK; ++} ++ ++#endif /*KERNEL_VERSION*/ ++ ++--Boundary-00=_5LbTGmt62YoutxM-- ++ ++ ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,363 @@ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND. ++ * ++ * Copyright (C) 2002 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* ++ * This module provides the interface between yaffs_nand.c and the ++ * MTD API. This version is used when the MTD interface supports the ++ * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17, ++ * and we have small-page NAND device. ++ * ++ * These functions are invoked via function pointers in yaffs_nand.c. ++ * This replaces functionality provided by functions in yaffs_mtdif.c ++ * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are ++ * called in yaffs_mtdif.c when the function pointers are NULL. ++ * We assume the MTD layer is performing ECC (useNANDECC is true). ++ */ ++ ++#include "yportenv.h" ++#include "yaffs_guts.h" ++#include "yaffs_packedtags1.h" ++#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC ++ ++#include "linux/kernel.h" ++#include "linux/version.h" ++#include "linux/types.h" ++#include "linux/mtd/mtd.h" ++ ++/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ ++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $"; ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++# define YTAG1_SIZE 8 ++#else ++# define YTAG1_SIZE 9 ++#endif ++ ++#if 0 ++/* Use the following nand_ecclayout with MTD when using ++ * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout. ++ * If you have existing Yaffs images and the byte order differs from this, ++ * adjust 'oobfree' to match your existing Yaffs data. ++ * ++ * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the ++ * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to ++ * the 9th byte. ++ * ++ * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5 ++ * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P ++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus ++ * byte and B is the small-page bad-block indicator byte. ++ */ ++static struct nand_ecclayout nand_oob_16 = { ++ .eccbytes = 6, ++ .eccpos = { 8, 9, 10, 13, 14, 15 }, ++ .oobavail = 9, ++ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } ++}; ++#endif ++ ++/* Write a chunk (page) of data to NAND. ++ * ++ * Caller always provides ExtendedTags data which are converted to a more ++ * compact (packed) form for storage in NAND. A mini-ECC runs over the ++ * contents of the tags meta-data; used to valid the tags when read. ++ * ++ * - Pack ExtendedTags to PackedTags1 form ++ * - Compute mini-ECC for PackedTags1 ++ * - Write data and packed tags to NAND. ++ * ++ * Note: Due to the use of the PackedTags1 meta-data which does not include ++ * a full sequence number (as found in the larger PackedTags2 form) it is ++ * necessary for Yaffs to re-write a chunk/page (just once) to mark it as ++ * discarded and dirty. This is not ideal: newer NAND parts are supposed ++ * to be written just once. When Yaffs performs this operation, this ++ * function is called with a NULL data pointer -- calling MTD write_oob ++ * without data is valid usage (2.6.17). ++ * ++ * Any underlying MTD error results in YAFFS_FAIL. ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev, ++ int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ ++ /* we assume that PackedTags1 and yaffs_Tags are compatible */ ++ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12); ++ compile_time_assertion(sizeof(yaffs_Tags) == 8); ++ ++ dev->nPageWrites++; ++ ++ yaffs_PackTags1(&pt1, etags); ++ yaffs_CalcTagsECC((yaffs_Tags *)&pt1); ++ ++ /* When deleting a chunk, the upper layer provides only skeletal ++ * etags, one with chunkDeleted set. However, we need to update the ++ * tags, not erase them completely. So we use the NAND write property ++ * that only zeroed-bits stick and set tag bytes to all-ones and ++ * zero just the (not) deleted bit. ++ */ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* clear delete status bit to indicate deleted */ ++ pt1.deleted = 0; ++ } ++#else ++ ((__u8 *)&pt1)[8] = 0xff; ++ if (etags->chunkDeleted) { ++ memset(&pt1, 0xff, 8); ++ /* zero pageStatus byte to indicate deleted */ ++ ((__u8 *)&pt1)[8] = 0; ++ } ++#endif ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = (__u8 *)data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++ retval = mtd->write_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "write_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ return retval ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Return with empty ExtendedTags but add eccResult. ++ */ ++static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval) ++{ ++ if (etags) { ++ memset(etags, 0, sizeof(*etags)); ++ etags->eccResult = eccResult; ++ } ++ return retval; ++} ++ ++/* Read a chunk (page) from NAND. ++ * ++ * Caller expects ExtendedTags data to be usable even on error; that is, ++ * all members except eccResult and blockBad are zeroed. ++ * ++ * - Check ECC results for data (if applicable) ++ * - Check for blank/erased block (return empty ExtendedTags if blank) ++ * - Check the PackedTags1 mini-ECC (correct if necessary/possible) ++ * - Convert PackedTags1 to ExtendedTags ++ * - Update eccResult and blockBad members to refect state. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev, ++ int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkBytes = dev->nDataBytesPerChunk; ++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes; ++ int eccres = YAFFS_ECC_RESULT_NO_ERROR; ++ struct mtd_oob_ops ops; ++ yaffs_PackedTags1 pt1; ++ int retval; ++ int deleted; ++ ++ dev->nPageReads++; ++ ++ memset(&ops, 0, sizeof(ops)); ++ ops.mode = MTD_OOB_AUTO; ++ ops.len = (data) ? chunkBytes : 0; ++ ops.ooblen = YTAG1_SIZE; ++ ops.datbuf = data; ++ ops.oobbuf = (__u8 *)&pt1; ++ ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) ++ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug; ++ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL. ++ */ ++ ops.len = (ops.datbuf) ? ops.len : ops.ooblen; ++#endif ++ /* Read page and oob using MTD. ++ * Check status and determine ECC result. ++ */ ++ retval = mtd->read_oob(mtd, addr, &ops); ++ if (retval) { ++ yaffs_trace(YAFFS_TRACE_MTD, ++ "read_oob failed, chunk %d, mtd error %d\n", ++ chunkInNAND, retval); ++ } ++ ++ switch (retval) { ++ case 0: ++ /* no error */ ++ break; ++ ++ case -EUCLEAN: ++ /* MTD's ECC fixed the data */ ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ dev->eccFixed++; ++ break; ++ ++ case -EBADMSG: ++ /* MTD's ECC could not fix the data */ ++ dev->eccUnfixed++; ++ /* fall into... */ ++ default: ++ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0); ++ etags->blockBad = (mtd->block_isbad)(mtd, addr); ++ return YAFFS_FAIL; ++ } ++ ++ /* Check for a blank/erased chunk. ++ */ ++ if (yaffs_CheckFF((__u8 *)&pt1, 8)) { ++ /* when blank, upper layers want eccResult to be <= NO_ERROR */ ++ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK); ++ } ++ ++#ifndef CONFIG_YAFFS_9BYTE_TAGS ++ /* Read deleted status (bit) then return it to it's non-deleted ++ * state before performing tags mini-ECC check. pt1.deleted is ++ * inverted. ++ */ ++ deleted = !pt1.deleted; ++ pt1.deleted = 1; ++#else ++ deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7); ++#endif ++ ++ /* Check the packed tags mini-ECC and correct if necessary/possible. ++ */ ++ retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1); ++ switch (retval) { ++ case 0: ++ /* no tags error, use MTD result */ ++ break; ++ case 1: ++ /* recovered tags-ECC error */ ++ dev->tagsEccFixed++; ++ if (eccres == YAFFS_ECC_RESULT_NO_ERROR) ++ eccres = YAFFS_ECC_RESULT_FIXED; ++ break; ++ default: ++ /* unrecovered tags-ECC error */ ++ dev->tagsEccUnfixed++; ++ return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL); ++ } ++ ++ /* Unpack the tags to extended form and set ECC result. ++ * [set shouldBeFF just to keep yaffs_UnpackTags1 happy] ++ */ ++ pt1.shouldBeFF = 0xFFFFFFFF; ++ yaffs_UnpackTags1(etags, &pt1); ++ etags->eccResult = eccres; ++ ++ /* Set deleted state */ ++ etags->chunkDeleted = deleted; ++ return YAFFS_OK; ++} ++ ++/* Mark a block bad. ++ * ++ * This is a persistant state. ++ * Use of this function should be rare. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk; ++ int retval; ++ ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo); ++ ++ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo); ++ return (retval) ? YAFFS_FAIL : YAFFS_OK; ++} ++ ++/* Check any MTD prerequists. ++ * ++ * Returns YAFFS_OK or YAFFS_FAIL. ++ */ ++static int nandmtd1_TestPrerequists(struct mtd_info * mtd) ++{ ++ /* 2.6.18 has mtd->ecclayout->oobavail */ ++ /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */ ++ int oobavail = mtd->ecclayout->oobavail; ++ ++ if (oobavail < YTAG1_SIZE) { ++ yaffs_trace(YAFFS_TRACE_ERROR, ++ "mtd device has only %d bytes for tags, need %d\n", ++ oobavail, YTAG1_SIZE); ++ return YAFFS_FAIL; ++ } ++ return YAFFS_OK; ++} ++ ++/* Query for the current state of a specific block. ++ * ++ * Examine the tags of the first chunk of the block and return the state: ++ * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad ++ * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use ++ * - YAFFS_BLOCK_STATE_EMPTY, the block is clean ++ * ++ * Always returns YAFFS_OK. ++ */ ++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * pState, int *pSequenceNumber) ++{ ++ struct mtd_info * mtd = dev->genericDevice; ++ int chunkNo = blockNo * dev->nChunksPerBlock; ++ yaffs_ExtendedTags etags; ++ int state = YAFFS_BLOCK_STATE_DEAD; ++ int seqnum = 0; ++ int retval; ++ ++ /* We don't yet have a good place to test for MTD config prerequists. ++ * Do it here as we are called during the initial scan. ++ */ ++ if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) { ++ return YAFFS_FAIL; ++ } ++ ++ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags); ++ if (etags.blockBad) { ++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, ++ "block %d is marked bad", blockNo); ++ state = YAFFS_BLOCK_STATE_DEAD; ++ } ++ else if (etags.chunkUsed) { ++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; ++ seqnum = etags.sequenceNumber; ++ } ++ else { ++ state = YAFFS_BLOCK_STATE_EMPTY; ++ } ++ ++ *pState = state; ++ *pSequenceNumber = seqnum; ++ ++ /* query always succeeds */ ++ return YAFFS_OK; ++} ++ ++#endif /*KERNEL_VERSION*/ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.h linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif1.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif1.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,28 @@ ++/* ++ * YAFFS: Yet another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_MTDIF1_H__ ++#define __YAFFS_MTDIF1_H__ ++ ++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, const yaffs_ExtendedTags * tags); ++ ++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * data, yaffs_ExtendedTags * tags); ++ ++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); ++ ++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.c linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,232 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++/* mtd interface for YAFFS2 */ ++ ++const char *yaffs_mtdif2_c_version = ++ "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $"; ++ ++#include "yportenv.h" ++ ++ ++#include "yaffs_mtdif2.h" ++ ++#include "linux/mtd/mtd.h" ++#include "linux/types.h" ++#include "linux/time.h" ++ ++#include "yaffs_packedtags2.h" ++ ++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * tags) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ struct mtd_oob_ops ops; ++#else ++ size_t dummy; ++#endif ++ int retval = 0; ++ ++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; ++ ++ yaffs_PackedTags2 pt; ++ ++ T(YAFFS_TRACE_MTD, ++ (TSTR ++ ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" ++ TENDSTR), chunkInNAND, data, tags)); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ if (tags) ++ yaffs_PackTags2(&pt, tags); ++ else ++ BUG(); /* both tags and data should always be present */ ++ ++ if (data) { ++ ops.mode = MTD_OOB_AUTO; ++ ops.ooblen = sizeof(pt); ++ ops.len = dev->nDataBytesPerChunk; ++ ops.ooboffs = 0; ++ ops.datbuf = (__u8 *)data; ++ ops.oobbuf = (void *)&pt; ++ retval = mtd->write_oob(mtd, addr, &ops); ++ } else ++ BUG(); /* both tags and data should always be present */ ++#else ++ if (tags) { ++ yaffs_PackTags2(&pt, tags); ++ } ++ ++ if (data && tags) { ++ if (dev->useNANDECC) ++ retval = ++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, (__u8 *) & pt, NULL); ++ else ++ retval = ++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, (__u8 *) & pt, NULL); ++ } else { ++ if (data) ++ retval = ++ mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy, ++ data); ++ if (tags) ++ retval = ++ mtd->write_oob(mtd, addr, mtd->oobsize, &dummy, ++ (__u8 *) & pt); ++ ++ } ++#endif ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * data, yaffs_ExtendedTags * tags) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ struct mtd_oob_ops ops; ++#endif ++ size_t dummy; ++ int retval = 0; ++ ++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk; ++ ++ yaffs_PackedTags2 pt; ++ ++ T(YAFFS_TRACE_MTD, ++ (TSTR ++ ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p" ++ TENDSTR), chunkInNAND, data, tags)); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ if (data && !tags) ++ retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data); ++ else if (tags) { ++ ops.mode = MTD_OOB_AUTO; ++ ops.ooblen = sizeof(pt); ++ ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt); ++ ops.ooboffs = 0; ++ ops.datbuf = data; ++ ops.oobbuf = dev->spareBuffer; ++ retval = mtd->read_oob(mtd, addr, &ops); ++ } ++#else ++ if (data && tags) { ++ if (dev->useNANDECC) { ++ retval = ++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, dev->spareBuffer, ++ NULL); ++ } else { ++ retval = ++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk, ++ &dummy, data, dev->spareBuffer, ++ NULL); ++ } ++ } else { ++ if (data) ++ retval = ++ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy, ++ data); ++ if (tags) ++ retval = ++ mtd->read_oob(mtd, addr, mtd->oobsize, &dummy, ++ dev->spareBuffer); ++ } ++#endif ++ ++ memcpy(&pt, dev->spareBuffer, sizeof(pt)); ++ ++ if (tags) ++ yaffs_UnpackTags2(tags, &pt); ++ ++ if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR) ++ tags->eccResult = YAFFS_ECC_RESULT_UNFIXED; ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ ++int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++ int retval; ++ T(YAFFS_TRACE_MTD, ++ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); ++ ++ retval = ++ mtd->block_markbad(mtd, ++ blockNo * dev->nChunksPerBlock * ++ dev->nDataBytesPerChunk); ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++ ++} ++ ++int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber) ++{ ++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); ++ int retval; ++ ++ T(YAFFS_TRACE_MTD, ++ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo)); ++ retval = ++ mtd->block_isbad(mtd, ++ blockNo * dev->nChunksPerBlock * ++ dev->nDataBytesPerChunk); ++ ++ if (retval) { ++ T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR))); ++ ++ *state = YAFFS_BLOCK_STATE_DEAD; ++ *sequenceNumber = 0; ++ } else { ++ yaffs_ExtendedTags t; ++ nandmtd2_ReadChunkWithTagsFromNAND(dev, ++ blockNo * ++ dev->nChunksPerBlock, NULL, ++ &t); ++ ++ if (t.chunkUsed) { ++ *sequenceNumber = t.sequenceNumber; ++ *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; ++ } else { ++ *sequenceNumber = 0; ++ *state = YAFFS_BLOCK_STATE_EMPTY; ++ } ++ } ++ T(YAFFS_TRACE_MTD, ++ (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber, ++ *state)); ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; ++} ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.h linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_mtdif2.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_mtdif2.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,29 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_MTDIF2_H__ ++#define __YAFFS_MTDIF2_H__ ++ ++#include "yaffs_guts.h" ++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * tags); ++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * data, yaffs_ExtendedTags * tags); ++int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); ++int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_nand.c linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_nand.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,134 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++const char *yaffs_nand_c_version = ++ "$Id: yaffs_nand.c,v 1.7 2007-02-14 01:09:06 wookey Exp $"; ++ ++#include "yaffs_nand.h" ++#include "yaffs_tagscompat.h" ++#include "yaffs_tagsvalidity.h" ++ ++ ++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * buffer, ++ yaffs_ExtendedTags * tags) ++{ ++ int result; ++ yaffs_ExtendedTags localTags; ++ ++ int realignedChunkInNAND = chunkInNAND - dev->chunkOffset; ++ ++ /* If there are no tags provided, use local tags to get prioritised gc working */ ++ if(!tags) ++ tags = &localTags; ++ ++ if (dev->readChunkWithTagsFromNAND) ++ result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer, ++ tags); ++ else ++ result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev, ++ realignedChunkInNAND, ++ buffer, ++ tags); ++ if(tags && ++ tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR){ ++ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock); ++ yaffs_HandleChunkError(dev,bi); ++ } ++ ++ return result; ++} ++ ++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ const __u8 * buffer, ++ yaffs_ExtendedTags * tags) ++{ ++ chunkInNAND -= dev->chunkOffset; ++ ++ ++ if (tags) { ++ tags->sequenceNumber = dev->sequenceNumber; ++ tags->chunkUsed = 1; ++ if (!yaffs_ValidateTags(tags)) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("Writing uninitialised tags" TENDSTR))); ++ YBUG(); ++ } ++ T(YAFFS_TRACE_WRITE, ++ (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND, ++ tags->objectId, tags->chunkId)); ++ } else { ++ T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR))); ++ YBUG(); ++ } ++ ++ if (dev->writeChunkWithTagsToNAND) ++ return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer, ++ tags); ++ else ++ return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev, ++ chunkInNAND, ++ buffer, ++ tags); ++} ++ ++int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo) ++{ ++ blockNo -= dev->blockOffset; ++ ++; ++ if (dev->markNANDBlockBad) ++ return dev->markNANDBlockBad(dev, blockNo); ++ else ++ return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo); ++} ++ ++int yaffs_QueryInitialBlockState(yaffs_Device * dev, ++ int blockNo, ++ yaffs_BlockState * state, ++ unsigned *sequenceNumber) ++{ ++ blockNo -= dev->blockOffset; ++ ++ if (dev->queryNANDBlock) ++ return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber); ++ else ++ return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo, ++ state, ++ sequenceNumber); ++} ++ ++ ++int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, ++ int blockInNAND) ++{ ++ int result; ++ ++ blockInNAND -= dev->blockOffset; ++ ++ ++ dev->nBlockErasures++; ++ result = dev->eraseBlockInNAND(dev, blockInNAND); ++ ++ return result; ++} ++ ++int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev) ++{ ++ return dev->initialiseNAND(dev); ++} ++ ++ ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_nand.h linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_nand.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_nand.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,44 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_NAND_H__ ++#define __YAFFS_NAND_H__ ++#include "yaffs_guts.h" ++ ++ ++ ++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND, ++ __u8 * buffer, ++ yaffs_ExtendedTags * tags); ++ ++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ const __u8 * buffer, ++ yaffs_ExtendedTags * tags); ++ ++int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo); ++ ++int yaffs_QueryInitialBlockState(yaffs_Device * dev, ++ int blockNo, ++ yaffs_BlockState * state, ++ unsigned *sequenceNumber); ++ ++int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, ++ int blockInNAND); ++ ++int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev); ++ ++#endif ++ +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_nandemul2k.h linux-2.6.21.1.new/fs/yaffs2/yaffs_nandemul2k.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_nandemul2k.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_nandemul2k.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,39 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++/* Interface to emulated NAND functions (2k page size) */ ++ ++#ifndef __YAFFS_NANDEMUL2K_H__ ++#define __YAFFS_NANDEMUL2K_H__ ++ ++#include "yaffs_guts.h" ++ ++int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND, const __u8 * data, ++ yaffs_ExtendedTags * tags); ++int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND, __u8 * data, ++ yaffs_ExtendedTags * tags); ++int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo); ++int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber); ++int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev, ++ int blockInNAND); ++int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev); ++int nandemul2k_GetBytesPerChunk(void); ++int nandemul2k_GetChunksPerBlock(void); ++int nandemul2k_GetNumberOfBlocks(void); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.c linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.c 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,52 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include "yaffs_packedtags1.h" ++#include "yportenv.h" ++ ++void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t) ++{ ++ pt->chunkId = t->chunkId; ++ pt->serialNumber = t->serialNumber; ++ pt->byteCount = t->byteCount; ++ pt->objectId = t->objectId; ++ pt->ecc = 0; ++ pt->deleted = (t->chunkDeleted) ? 0 : 1; ++ pt->unusedStuff = 0; ++ pt->shouldBeFF = 0xFFFFFFFF; ++ ++} ++ ++void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt) ++{ ++ static const __u8 allFF[] = ++ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, ++0xff }; ++ ++ if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) { ++ t->blockBad = 0; ++ if (pt->shouldBeFF != 0xFFFFFFFF) { ++ t->blockBad = 1; ++ } ++ t->chunkUsed = 1; ++ t->objectId = pt->objectId; ++ t->chunkId = pt->chunkId; ++ t->byteCount = pt->byteCount; ++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; ++ t->chunkDeleted = (pt->deleted) ? 0 : 1; ++ t->serialNumber = pt->serialNumber; ++ } else { ++ memset(t, 0, sizeof(yaffs_ExtendedTags)); ++ ++ } ++} +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.h linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags1.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags1.h 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,37 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++/* This is used to pack YAFFS1 tags, not YAFFS2 tags. */ ++ ++#ifndef __YAFFS_PACKEDTAGS1_H__ ++#define __YAFFS_PACKEDTAGS1_H__ ++ ++#include "yaffs_guts.h" ++ ++typedef struct { ++ unsigned chunkId:20; ++ unsigned serialNumber:2; ++ unsigned byteCount:10; ++ unsigned objectId:18; ++ unsigned ecc:12; ++ unsigned deleted:1; ++ unsigned unusedStuff:1; ++ unsigned shouldBeFF; ++ ++} yaffs_PackedTags1; ++ ++void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t); ++void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt); ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.c linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.c 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,182 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include "yaffs_packedtags2.h" ++#include "yportenv.h" ++#include "yaffs_tagsvalidity.h" ++ ++/* This code packs a set of extended tags into a binary structure for ++ * NAND storage ++ */ ++ ++/* Some of the information is "extra" struff which can be packed in to ++ * speed scanning ++ * This is defined by having the EXTRA_HEADER_INFO_FLAG set. ++ */ ++ ++/* Extra flags applied to chunkId */ ++ ++#define EXTRA_HEADER_INFO_FLAG 0x80000000 ++#define EXTRA_SHRINK_FLAG 0x40000000 ++#define EXTRA_SHADOWS_FLAG 0x20000000 ++#define EXTRA_SPARE_FLAGS 0x10000000 ++ ++#define ALL_EXTRA_FLAGS 0xF0000000 ++ ++/* Also, the top 4 bits of the object Id are set to the object type. */ ++#define EXTRA_OBJECT_TYPE_SHIFT (28) ++#define EXTRA_OBJECT_TYPE_MASK ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT) ++ ++static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt) ++{ ++ T(YAFFS_TRACE_MTD, ++ (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR), ++ pt->t.objectId, pt->t.chunkId, pt->t.byteCount, ++ pt->t.sequenceNumber)); ++} ++ ++static void yaffs_DumpTags2(const yaffs_ExtendedTags * t) ++{ ++ T(YAFFS_TRACE_MTD, ++ (TSTR ++ ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte " ++ "%d del %d ser %d seq %d" ++ TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId, ++ t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber, ++ t->sequenceNumber)); ++ ++} ++ ++void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t) ++{ ++ pt->t.chunkId = t->chunkId; ++ pt->t.sequenceNumber = t->sequenceNumber; ++ pt->t.byteCount = t->byteCount; ++ pt->t.objectId = t->objectId; ++ ++ if (t->chunkId == 0 && t->extraHeaderInfoAvailable) { ++ /* Store the extra header info instead */ ++ /* We save the parent object in the chunkId */ ++ pt->t.chunkId = EXTRA_HEADER_INFO_FLAG ++ | t->extraParentObjectId; ++ if (t->extraIsShrinkHeader) { ++ pt->t.chunkId |= EXTRA_SHRINK_FLAG; ++ } ++ if (t->extraShadows) { ++ pt->t.chunkId |= EXTRA_SHADOWS_FLAG; ++ } ++ ++ pt->t.objectId &= ~EXTRA_OBJECT_TYPE_MASK; ++ pt->t.objectId |= ++ (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT); ++ ++ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) { ++ pt->t.byteCount = t->extraEquivalentObjectId; ++ } else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) { ++ pt->t.byteCount = t->extraFileLength; ++ } else { ++ pt->t.byteCount = 0; ++ } ++ } ++ ++ yaffs_DumpPackedTags2(pt); ++ yaffs_DumpTags2(t); ++ ++#ifndef YAFFS_IGNORE_TAGS_ECC ++ { ++ yaffs_ECCCalculateOther((unsigned char *)&pt->t, ++ sizeof(yaffs_PackedTags2TagsPart), ++ &pt->ecc); ++ } ++#endif ++} ++ ++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt) ++{ ++ ++ memset(t, 0, sizeof(yaffs_ExtendedTags)); ++ ++ yaffs_InitialiseTags(t); ++ ++ if (pt->t.sequenceNumber != 0xFFFFFFFF) { ++ /* Page is in use */ ++#ifdef YAFFS_IGNORE_TAGS_ECC ++ { ++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; ++ } ++#else ++ { ++ yaffs_ECCOther ecc; ++ int result; ++ yaffs_ECCCalculateOther((unsigned char *)&pt->t, ++ sizeof ++ (yaffs_PackedTags2TagsPart), ++ &ecc); ++ result = ++ yaffs_ECCCorrectOther((unsigned char *)&pt->t, ++ sizeof ++ (yaffs_PackedTags2TagsPart), ++ &pt->ecc, &ecc); ++ switch(result){ ++ case 0: ++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; ++ break; ++ case 1: ++ t->eccResult = YAFFS_ECC_RESULT_FIXED; ++ break; ++ case -1: ++ t->eccResult = YAFFS_ECC_RESULT_UNFIXED; ++ break; ++ default: ++ t->eccResult = YAFFS_ECC_RESULT_UNKNOWN; ++ } ++ } ++#endif ++ t->blockBad = 0; ++ t->chunkUsed = 1; ++ t->objectId = pt->t.objectId; ++ t->chunkId = pt->t.chunkId; ++ t->byteCount = pt->t.byteCount; ++ t->chunkDeleted = 0; ++ t->serialNumber = 0; ++ t->sequenceNumber = pt->t.sequenceNumber; ++ ++ /* Do extra header info stuff */ ++ ++ if (pt->t.chunkId & EXTRA_HEADER_INFO_FLAG) { ++ t->chunkId = 0; ++ t->byteCount = 0; ++ ++ t->extraHeaderInfoAvailable = 1; ++ t->extraParentObjectId = ++ pt->t.chunkId & (~(ALL_EXTRA_FLAGS)); ++ t->extraIsShrinkHeader = ++ (pt->t.chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0; ++ t->extraShadows = ++ (pt->t.chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0; ++ t->extraObjectType = ++ pt->t.objectId >> EXTRA_OBJECT_TYPE_SHIFT; ++ t->objectId &= ~EXTRA_OBJECT_TYPE_MASK; ++ ++ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) { ++ t->extraEquivalentObjectId = pt->t.byteCount; ++ } else { ++ t->extraFileLength = pt->t.byteCount; ++ } ++ } ++ } ++ ++ yaffs_DumpPackedTags2(pt); ++ yaffs_DumpTags2(t); ++ ++} +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.h linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_packedtags2.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_packedtags2.h 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,38 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++/* This is used to pack YAFFS2 tags, not YAFFS1tags. */ ++ ++#ifndef __YAFFS_PACKEDTAGS2_H__ ++#define __YAFFS_PACKEDTAGS2_H__ ++ ++#include "yaffs_guts.h" ++#include "yaffs_ecc.h" ++ ++typedef struct { ++ unsigned sequenceNumber; ++ unsigned objectId; ++ unsigned chunkId; ++ unsigned byteCount; ++} yaffs_PackedTags2TagsPart; ++ ++typedef struct { ++ yaffs_PackedTags2TagsPart t; ++ yaffs_ECCOther ecc; ++} yaffs_PackedTags2; ++ ++void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t); ++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt); ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_qsort.c linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_qsort.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.c 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,160 @@ ++/* ++ * Copyright (c) 1992, 1993 ++ * The Regents of the University of California. All rights reserved. ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions ++ * are met: ++ * 1. Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * 2. Redistributions in binary form must reproduce the above copyright ++ * notice, this list of conditions and the following disclaimer in the ++ * documentation and/or other materials provided with the distribution. ++ * 3. Neither the name of the University nor the names of its contributors ++ * may be used to endorse or promote products derived from this software ++ * without specific prior written permission. ++ * ++ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ++ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ++ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ++ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ++ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ++ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ++ * SUCH DAMAGE. ++ */ ++ ++#include "yportenv.h" ++//#include <linux/string.h> ++ ++/* ++ * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function". ++ */ ++#define swapcode(TYPE, parmi, parmj, n) { \ ++ long i = (n) / sizeof (TYPE); \ ++ register TYPE *pi = (TYPE *) (parmi); \ ++ register TYPE *pj = (TYPE *) (parmj); \ ++ do { \ ++ register TYPE t = *pi; \ ++ *pi++ = *pj; \ ++ *pj++ = t; \ ++ } while (--i > 0); \ ++} ++ ++#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \ ++ es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1; ++ ++static __inline void ++swapfunc(char *a, char *b, int n, int swaptype) ++{ ++ if (swaptype <= 1) ++ swapcode(long, a, b, n) ++ else ++ swapcode(char, a, b, n) ++} ++ ++#define swap(a, b) \ ++ if (swaptype == 0) { \ ++ long t = *(long *)(a); \ ++ *(long *)(a) = *(long *)(b); \ ++ *(long *)(b) = t; \ ++ } else \ ++ swapfunc(a, b, es, swaptype) ++ ++#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype) ++ ++static __inline char * ++med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *)) ++{ ++ return cmp(a, b) < 0 ? ++ (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a )) ++ :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c )); ++} ++ ++#ifndef min ++#define min(a,b) (((a) < (b)) ? (a) : (b)) ++#endif ++ ++void ++yaffs_qsort(void *aa, size_t n, size_t es, ++ int (*cmp)(const void *, const void *)) ++{ ++ char *pa, *pb, *pc, *pd, *pl, *pm, *pn; ++ int d, r, swaptype, swap_cnt; ++ register char *a = aa; ++ ++loop: SWAPINIT(a, es); ++ swap_cnt = 0; ++ if (n < 7) { ++ for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es) ++ for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0; ++ pl -= es) ++ swap(pl, pl - es); ++ return; ++ } ++ pm = (char *)a + (n / 2) * es; ++ if (n > 7) { ++ pl = (char *)a; ++ pn = (char *)a + (n - 1) * es; ++ if (n > 40) { ++ d = (n / 8) * es; ++ pl = med3(pl, pl + d, pl + 2 * d, cmp); ++ pm = med3(pm - d, pm, pm + d, cmp); ++ pn = med3(pn - 2 * d, pn - d, pn, cmp); ++ } ++ pm = med3(pl, pm, pn, cmp); ++ } ++ swap(a, pm); ++ pa = pb = (char *)a + es; ++ ++ pc = pd = (char *)a + (n - 1) * es; ++ for (;;) { ++ while (pb <= pc && (r = cmp(pb, a)) <= 0) { ++ if (r == 0) { ++ swap_cnt = 1; ++ swap(pa, pb); ++ pa += es; ++ } ++ pb += es; ++ } ++ while (pb <= pc && (r = cmp(pc, a)) >= 0) { ++ if (r == 0) { ++ swap_cnt = 1; ++ swap(pc, pd); ++ pd -= es; ++ } ++ pc -= es; ++ } ++ if (pb > pc) ++ break; ++ swap(pb, pc); ++ swap_cnt = 1; ++ pb += es; ++ pc -= es; ++ } ++ if (swap_cnt == 0) { /* Switch to insertion sort */ ++ for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es) ++ for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0; ++ pl -= es) ++ swap(pl, pl - es); ++ return; ++ } ++ ++ pn = (char *)a + n * es; ++ r = min(pa - (char *)a, pb - pa); ++ vecswap(a, pb - r, r); ++ r = min((long)(pd - pc), (long)(pn - pd - es)); ++ vecswap(pb, pn - r, r); ++ if ((r = pb - pa) > es) ++ yaffs_qsort(a, r / es, es, cmp); ++ if ((r = pd - pc) > es) { ++ /* Iterate rather than recurse to save stack space */ ++ a = pn - r; ++ n = r / es; ++ goto loop; ++ } ++/* yaffs_qsort(pn - r, r / es, es, cmp);*/ ++} +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_qsort.h linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_qsort.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_qsort.h 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,23 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++ ++#ifndef __YAFFS_QSORT_H__ ++#define __YAFFS_QSORT_H__ ++ ++extern void yaffs_qsort (void *const base, size_t total_elems, size_t size, ++ int (*cmp)(const void *, const void *)); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.c linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.c 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,530 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include "yaffs_guts.h" ++#include "yaffs_tagscompat.h" ++#include "yaffs_ecc.h" ++ ++static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND); ++#ifdef NOTYET ++static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND); ++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_Spare * spare); ++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, ++ const yaffs_Spare * spare); ++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND); ++#endif ++ ++static const char yaffs_countBitsTable[256] = { ++ 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, ++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, ++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, ++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, ++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, ++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, ++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, ++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, ++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, ++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, ++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, ++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, ++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, ++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, ++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, ++ 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 ++}; ++ ++int yaffs_CountBits(__u8 x) ++{ ++ int retVal; ++ retVal = yaffs_countBitsTable[x]; ++ return retVal; ++} ++ ++/********** Tags ECC calculations *********/ ++ ++void yaffs_CalcECC(const __u8 * data, yaffs_Spare * spare) ++{ ++ yaffs_ECCCalculate(data, spare->ecc1); ++ yaffs_ECCCalculate(&data[256], spare->ecc2); ++} ++ ++void yaffs_CalcTagsECC(yaffs_Tags * tags) ++{ ++ /* Calculate an ecc */ ++ ++ unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; ++ unsigned i, j; ++ unsigned ecc = 0; ++ unsigned bit = 0; ++ ++ tags->ecc = 0; ++ ++ for (i = 0; i < 8; i++) { ++ for (j = 1; j & 0xff; j <<= 1) { ++ bit++; ++ if (b[i] & j) { ++ ecc ^= bit; ++ } ++ } ++ } ++ ++ tags->ecc = ecc; ++ ++} ++ ++int yaffs_CheckECCOnTags(yaffs_Tags * tags) ++{ ++ unsigned ecc = tags->ecc; ++ ++ yaffs_CalcTagsECC(tags); ++ ++ ecc ^= tags->ecc; ++ ++ if (ecc && ecc <= 64) { ++ /* TODO: Handle the failure better. Retire? */ ++ unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes; ++ ++ ecc--; ++ ++ b[ecc / 8] ^= (1 << (ecc & 7)); ++ ++ /* Now recvalc the ecc */ ++ yaffs_CalcTagsECC(tags); ++ ++ return 1; /* recovered error */ ++ } else if (ecc) { ++ /* Wierd ecc failure value */ ++ /* TODO Need to do somethiong here */ ++ return -1; /* unrecovered error */ ++ } ++ ++ return 0; ++} ++ ++/********** Tags **********/ ++ ++static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr, ++ yaffs_Tags * tagsPtr) ++{ ++ yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; ++ ++ yaffs_CalcTagsECC(tagsPtr); ++ ++ sparePtr->tagByte0 = tu->asBytes[0]; ++ sparePtr->tagByte1 = tu->asBytes[1]; ++ sparePtr->tagByte2 = tu->asBytes[2]; ++ sparePtr->tagByte3 = tu->asBytes[3]; ++ sparePtr->tagByte4 = tu->asBytes[4]; ++ sparePtr->tagByte5 = tu->asBytes[5]; ++ sparePtr->tagByte6 = tu->asBytes[6]; ++ sparePtr->tagByte7 = tu->asBytes[7]; ++} ++ ++static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr, ++ yaffs_Tags * tagsPtr) ++{ ++ yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr; ++ int result; ++ ++ tu->asBytes[0] = sparePtr->tagByte0; ++ tu->asBytes[1] = sparePtr->tagByte1; ++ tu->asBytes[2] = sparePtr->tagByte2; ++ tu->asBytes[3] = sparePtr->tagByte3; ++ tu->asBytes[4] = sparePtr->tagByte4; ++ tu->asBytes[5] = sparePtr->tagByte5; ++ tu->asBytes[6] = sparePtr->tagByte6; ++ tu->asBytes[7] = sparePtr->tagByte7; ++ ++ result = yaffs_CheckECCOnTags(tagsPtr); ++ if (result > 0) { ++ dev->tagsEccFixed++; ++ } else if (result < 0) { ++ dev->tagsEccUnfixed++; ++ } ++} ++ ++static void yaffs_SpareInitialise(yaffs_Spare * spare) ++{ ++ memset(spare, 0xFF, sizeof(yaffs_Spare)); ++} ++ ++static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND, const __u8 * data, ++ yaffs_Spare * spare) ++{ ++ if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> yaffs chunk %d is not valid" TENDSTR), ++ chunkInNAND)); ++ return YAFFS_FAIL; ++ } ++ ++ dev->nPageWrites++; ++ return dev->writeChunkToNAND(dev, chunkInNAND, data, spare); ++} ++ ++static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND, ++ __u8 * data, ++ yaffs_Spare * spare, ++ yaffs_ECCResult * eccResult, ++ int doErrorCorrection) ++{ ++ int retVal; ++ yaffs_Spare localSpare; ++ ++ dev->nPageReads++; ++ ++ if (!spare && data) { ++ /* If we don't have a real spare, then we use a local one. */ ++ /* Need this for the calculation of the ecc */ ++ spare = &localSpare; ++ } ++ ++ if (!dev->useNANDECC) { ++ retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare); ++ if (data && doErrorCorrection) { ++ /* Do ECC correction */ ++ /* Todo handle any errors */ ++ int eccResult1, eccResult2; ++ __u8 calcEcc[3]; ++ ++ yaffs_ECCCalculate(data, calcEcc); ++ eccResult1 = ++ yaffs_ECCCorrect(data, spare->ecc1, calcEcc); ++ yaffs_ECCCalculate(&data[256], calcEcc); ++ eccResult2 = ++ yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc); ++ ++ if (eccResult1 > 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>yaffs ecc error fix performed on chunk %d:0" ++ TENDSTR), chunkInNAND)); ++ dev->eccFixed++; ++ } else if (eccResult1 < 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>yaffs ecc error unfixed on chunk %d:0" ++ TENDSTR), chunkInNAND)); ++ dev->eccUnfixed++; ++ } ++ ++ if (eccResult2 > 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>yaffs ecc error fix performed on chunk %d:1" ++ TENDSTR), chunkInNAND)); ++ dev->eccFixed++; ++ } else if (eccResult2 < 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>yaffs ecc error unfixed on chunk %d:1" ++ TENDSTR), chunkInNAND)); ++ dev->eccUnfixed++; ++ } ++ ++ if (eccResult1 || eccResult2) { ++ /* We had a data problem on this page */ ++ yaffs_HandleReadDataError(dev, chunkInNAND); ++ } ++ ++ if (eccResult1 < 0 || eccResult2 < 0) ++ *eccResult = YAFFS_ECC_RESULT_UNFIXED; ++ else if (eccResult1 > 0 || eccResult2 > 0) ++ *eccResult = YAFFS_ECC_RESULT_FIXED; ++ else ++ *eccResult = YAFFS_ECC_RESULT_NO_ERROR; ++ } ++ } else { ++ /* Must allocate enough memory for spare+2*sizeof(int) */ ++ /* for ecc results from device. */ ++ struct yaffs_NANDSpare nspare; ++ retVal = ++ dev->readChunkFromNAND(dev, chunkInNAND, data, ++ (yaffs_Spare *) & nspare); ++ memcpy(spare, &nspare, sizeof(yaffs_Spare)); ++ if (data && doErrorCorrection) { ++ if (nspare.eccres1 > 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>mtd ecc error fix performed on chunk %d:0" ++ TENDSTR), chunkInNAND)); ++ } else if (nspare.eccres1 < 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>mtd ecc error unfixed on chunk %d:0" ++ TENDSTR), chunkInNAND)); ++ } ++ ++ if (nspare.eccres2 > 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>mtd ecc error fix performed on chunk %d:1" ++ TENDSTR), chunkInNAND)); ++ } else if (nspare.eccres2 < 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>mtd ecc error unfixed on chunk %d:1" ++ TENDSTR), chunkInNAND)); ++ } ++ ++ if (nspare.eccres1 || nspare.eccres2) { ++ /* We had a data problem on this page */ ++ yaffs_HandleReadDataError(dev, chunkInNAND); ++ } ++ ++ if (nspare.eccres1 < 0 || nspare.eccres2 < 0) ++ *eccResult = YAFFS_ECC_RESULT_UNFIXED; ++ else if (nspare.eccres1 > 0 || nspare.eccres2 > 0) ++ *eccResult = YAFFS_ECC_RESULT_FIXED; ++ else ++ *eccResult = YAFFS_ECC_RESULT_NO_ERROR; ++ ++ } ++ } ++ return retVal; ++} ++ ++#ifdef NOTYET ++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND) ++{ ++ ++ static int init = 0; ++ static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK]; ++ static __u8 data[YAFFS_BYTES_PER_CHUNK]; ++ /* Might as well always allocate the larger size for */ ++ /* dev->useNANDECC == true; */ ++ static __u8 spare[sizeof(struct yaffs_NANDSpare)]; ++ ++ dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare); ++ ++ if (!init) { ++ memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK); ++ init = 1; ++ } ++ ++ if (memcmp(cmpbuf, data, YAFFS_BYTES_PER_CHUNK)) ++ return YAFFS_FAIL; ++ if (memcmp(cmpbuf, spare, 16)) ++ return YAFFS_FAIL; ++ ++ return YAFFS_OK; ++ ++} ++#endif ++ ++/* ++ * Functions for robustisizing ++ */ ++ ++static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND) ++{ ++ int blockInNAND = chunkInNAND / dev->nChunksPerBlock; ++ ++ /* Mark the block for retirement */ ++ yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1; ++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND)); ++ ++ /* TODO: ++ * Just do a garbage collection on the affected block ++ * then retire the block ++ * NB recursion ++ */ ++} ++ ++#ifdef NOTYET ++static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND) ++{ ++} ++ ++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_Spare * spare) ++{ ++} ++ ++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, ++ const yaffs_Spare * spare) ++{ ++} ++ ++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND) ++{ ++ int blockInNAND = chunkInNAND / dev->nChunksPerBlock; ++ ++ /* Mark the block for retirement */ ++ yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1; ++ /* Delete the chunk */ ++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); ++} ++ ++static int yaffs_VerifyCompare(const __u8 * d0, const __u8 * d1, ++ const yaffs_Spare * s0, const yaffs_Spare * s1) ++{ ++ ++ if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 || ++ s0->tagByte0 != s1->tagByte0 || ++ s0->tagByte1 != s1->tagByte1 || ++ s0->tagByte2 != s1->tagByte2 || ++ s0->tagByte3 != s1->tagByte3 || ++ s0->tagByte4 != s1->tagByte4 || ++ s0->tagByte5 != s1->tagByte5 || ++ s0->tagByte6 != s1->tagByte6 || ++ s0->tagByte7 != s1->tagByte7 || ++ s0->ecc1[0] != s1->ecc1[0] || ++ s0->ecc1[1] != s1->ecc1[1] || ++ s0->ecc1[2] != s1->ecc1[2] || ++ s0->ecc2[0] != s1->ecc2[0] || ++ s0->ecc2[1] != s1->ecc2[1] || s0->ecc2[2] != s1->ecc2[2]) { ++ return 0; ++ } ++ ++ return 1; ++} ++#endif /* NOTYET */ ++ ++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * ++ eTags) ++{ ++ yaffs_Spare spare; ++ yaffs_Tags tags; ++ ++ yaffs_SpareInitialise(&spare); ++ ++ if (eTags->chunkDeleted) { ++ spare.pageStatus = 0; ++ } else { ++ tags.objectId = eTags->objectId; ++ tags.chunkId = eTags->chunkId; ++ tags.byteCount = eTags->byteCount; ++ tags.serialNumber = eTags->serialNumber; ++ ++ if (!dev->useNANDECC && data) { ++ yaffs_CalcECC(data, &spare); ++ } ++ yaffs_LoadTagsIntoSpare(&spare, &tags); ++ ++ } ++ ++ return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare); ++} ++ ++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ __u8 * data, ++ yaffs_ExtendedTags * eTags) ++{ ++ ++ yaffs_Spare spare; ++ yaffs_Tags tags; ++ yaffs_ECCResult eccResult; ++ ++ static yaffs_Spare spareFF; ++ static int init; ++ ++ if (!init) { ++ memset(&spareFF, 0xFF, sizeof(spareFF)); ++ init = 1; ++ } ++ ++ if (yaffs_ReadChunkFromNAND ++ (dev, chunkInNAND, data, &spare, &eccResult, 1)) { ++ /* eTags may be NULL */ ++ if (eTags) { ++ ++ int deleted = ++ (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0; ++ ++ eTags->chunkDeleted = deleted; ++ eTags->eccResult = eccResult; ++ eTags->blockBad = 0; /* We're reading it */ ++ /* therefore it is not a bad block */ ++ eTags->chunkUsed = ++ (memcmp(&spareFF, &spare, sizeof(spareFF)) != ++ 0) ? 1 : 0; ++ ++ if (eTags->chunkUsed) { ++ yaffs_GetTagsFromSpare(dev, &spare, &tags); ++ ++ eTags->objectId = tags.objectId; ++ eTags->chunkId = tags.chunkId; ++ eTags->byteCount = tags.byteCount; ++ eTags->serialNumber = tags.serialNumber; ++ } ++ } ++ ++ return YAFFS_OK; ++ } else { ++ return YAFFS_FAIL; ++ } ++} ++ ++int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, ++ int blockInNAND) ++{ ++ ++ yaffs_Spare spare; ++ ++ memset(&spare, 0xff, sizeof(yaffs_Spare)); ++ ++ spare.blockStatus = 'Y'; ++ ++ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL, ++ &spare); ++ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1, ++ NULL, &spare); ++ ++ return YAFFS_OK; ++ ++} ++ ++int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, ++ int blockNo, yaffs_BlockState * ++ state, ++ int *sequenceNumber) ++{ ++ ++ yaffs_Spare spare0, spare1; ++ static yaffs_Spare spareFF; ++ static int init; ++ yaffs_ECCResult dummy; ++ ++ if (!init) { ++ memset(&spareFF, 0xFF, sizeof(spareFF)); ++ init = 1; ++ } ++ ++ *sequenceNumber = 0; ++ ++ yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL, ++ &spare0, &dummy, 1); ++ yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL, ++ &spare1, &dummy, 1); ++ ++ if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7) ++ *state = YAFFS_BLOCK_STATE_DEAD; ++ else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0) ++ *state = YAFFS_BLOCK_STATE_EMPTY; ++ else ++ *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING; ++ ++ return YAFFS_OK; ++} +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.h linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagscompat.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagscompat.h 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,40 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFS_TAGSCOMPAT_H__ ++#define __YAFFS_TAGSCOMPAT_H__ ++ ++#include "yaffs_guts.h" ++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * ++ tags); ++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ __u8 * data, ++ yaffs_ExtendedTags * ++ tags); ++int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, ++ int blockNo); ++int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev, ++ int blockNo, yaffs_BlockState * ++ state, int *sequenceNumber); ++ ++void yaffs_CalcTagsECC(yaffs_Tags * tags); ++int yaffs_CheckECCOnTags(yaffs_Tags * tags); ++int yaffs_CountBits(__u8 byte); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.c linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.c +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.c 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,28 @@ ++/* ++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ ++#include "yaffs_tagsvalidity.h" ++ ++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags) ++{ ++ memset(tags, 0, sizeof(yaffs_ExtendedTags)); ++ tags->validMarker0 = 0xAAAAAAAA; ++ tags->validMarker1 = 0x55555555; ++} ++ ++int yaffs_ValidateTags(yaffs_ExtendedTags * tags) ++{ ++ return (tags->validMarker0 == 0xAAAAAAAA && ++ tags->validMarker1 == 0x55555555); ++ ++} +diff -urN linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.h linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.h +--- linux-2.6.21.1/fs/yaffs2/yaffs_tagsvalidity.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffs_tagsvalidity.h 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,24 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++ ++#ifndef __YAFFS_TAGS_VALIDITY_H__ ++#define __YAFFS_TAGS_VALIDITY_H__ ++ ++#include "yaffs_guts.h" ++ ++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags); ++int yaffs_ValidateTags(yaffs_ExtendedTags * tags); ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yaffsinterface.h linux-2.6.21.1.new/fs/yaffs2/yaffsinterface.h +--- linux-2.6.21.1/fs/yaffs2/yaffsinterface.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yaffsinterface.h 2007-06-08 14:07:26.000000000 +0200 +@@ -0,0 +1,21 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++#ifndef __YAFFSINTERFACE_H__ ++#define __YAFFSINTERFACE_H__ ++ ++int yaffs_Initialise(unsigned nBlocks); ++ ++#endif +diff -urN linux-2.6.21.1/fs/yaffs2/yportenv.h linux-2.6.21.1.new/fs/yaffs2/yportenv.h +--- linux-2.6.21.1/fs/yaffs2/yportenv.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux-2.6.21.1.new/fs/yaffs2/yportenv.h 2007-06-08 14:07:27.000000000 +0200 +@@ -0,0 +1,186 @@ ++/* ++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002-2007 Aleph One Ltd. ++ * for Toby Churchill Ltd and Brightstar Engineering ++ * ++ * Created by Charles Manning <charles@aleph1.co.uk> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU Lesser General Public License version 2.1 as ++ * published by the Free Software Foundation. ++ * ++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. ++ */ ++ ++ ++#ifndef __YPORTENV_H__ ++#define __YPORTENV_H__ ++ ++#if defined CONFIG_YAFFS_WINCE ++ ++#include "ywinceenv.h" ++ ++#elif defined __KERNEL__ ++ ++#include "moduleconfig.h" ++ ++/* Linux kernel */ ++#include <linux/version.h> ++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)) ++#include <linux/config.h> ++#endif ++#include <linux/kernel.h> ++#include <linux/mm.h> ++#include <linux/string.h> ++#include <linux/slab.h> ++#include <linux/vmalloc.h> ++ ++#define YCHAR char ++#define YUCHAR unsigned char ++#define _Y(x) x ++#define yaffs_strcpy(a,b) strcpy(a,b) ++#define yaffs_strncpy(a,b,c) strncpy(a,b,c) ++#define yaffs_strncmp(a,b,c) strncmp(a,b,c) ++#define yaffs_strlen(s) strlen(s) ++#define yaffs_sprintf sprintf ++#define yaffs_toupper(a) toupper(a) ++ ++#define Y_INLINE inline ++ ++#define YAFFS_LOSTNFOUND_NAME "lost+found" ++#define YAFFS_LOSTNFOUND_PREFIX "obj" ++ ++/* #define YPRINTF(x) printk x */ ++#define YMALLOC(x) kmalloc(x,GFP_KERNEL) ++#define YFREE(x) kfree(x) ++#define YMALLOC_ALT(x) vmalloc(x) ++#define YFREE_ALT(x) vfree(x) ++#define YMALLOC_DMA(x) YMALLOC(x) ++ ++// KR - added for use in scan so processes aren't blocked indefinitely. ++#define YYIELD() schedule() ++ ++#define YAFFS_ROOT_MODE 0666 ++#define YAFFS_LOSTNFOUND_MODE 0666 ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++#define Y_CURRENT_TIME CURRENT_TIME.tv_sec ++#define Y_TIME_CONVERT(x) (x).tv_sec ++#else ++#define Y_CURRENT_TIME CURRENT_TIME ++#define Y_TIME_CONVERT(x) (x) ++#endif ++ ++#define yaffs_SumCompare(x,y) ((x) == (y)) ++#define yaffs_strcmp(a,b) strcmp(a,b) ++ ++#define TENDSTR "\n" ++#define TSTR(x) KERN_WARNING x ++#define TOUT(p) printk p ++ ++#define yaffs_trace(mask, fmt, args...) \ ++ do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \ ++ printk(KERN_WARNING "yaffs: " fmt, ## args); \ ++ } while (0) ++ ++#define compile_time_assertion(assertion) \ ++ ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) ++ ++#elif defined CONFIG_YAFFS_DIRECT ++ ++/* Direct interface */ ++#include "ydirectenv.h" ++ ++#elif defined CONFIG_YAFFS_UTIL ++ ++/* Stuff for YAFFS utilities */ ++ ++#include "stdlib.h" ++#include "stdio.h" ++#include "string.h" ++ ++#include "devextras.h" ++ ++#define YMALLOC(x) malloc(x) ++#define YFREE(x) free(x) ++#define YMALLOC_ALT(x) malloc(x) ++#define YFREE_ALT(x) free(x) ++ ++#define YCHAR char ++#define YUCHAR unsigned char ++#define _Y(x) x ++#define yaffs_strcpy(a,b) strcpy(a,b) ++#define yaffs_strncpy(a,b,c) strncpy(a,b,c) ++#define yaffs_strlen(s) strlen(s) ++#define yaffs_sprintf sprintf ++#define yaffs_toupper(a) toupper(a) ++ ++#define Y_INLINE inline ++ ++/* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */ ++/* #define YALERT(s) YINFO(s) */ ++ ++#define TENDSTR "\n" ++#define TSTR(x) x ++#define TOUT(p) printf p ++ ++#define YAFFS_LOSTNFOUND_NAME "lost+found" ++#define YAFFS_LOSTNFOUND_PREFIX "obj" ++/* #define YPRINTF(x) printf x */ ++ ++#define YAFFS_ROOT_MODE 0666 ++#define YAFFS_LOSTNFOUND_MODE 0666 ++ ++#define yaffs_SumCompare(x,y) ((x) == (y)) ++#define yaffs_strcmp(a,b) strcmp(a,b) ++ ++#else ++/* Should have specified a configuration type */ ++#error Unknown configuration ++ ++#endif ++ ++/* see yaffs_fs.c */ ++extern unsigned int yaffs_traceMask; ++extern unsigned int yaffs_wr_attempts; ++ ++/* ++ * Tracing flags. ++ * The flags masked in YAFFS_TRACE_ALWAYS are always traced. ++ */ ++ ++#define YAFFS_TRACE_OS 0x00000002 ++#define YAFFS_TRACE_ALLOCATE 0x00000004 ++#define YAFFS_TRACE_SCAN 0x00000008 ++#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 ++#define YAFFS_TRACE_ERASE 0x00000020 ++#define YAFFS_TRACE_GC 0x00000040 ++#define YAFFS_TRACE_WRITE 0x00000080 ++#define YAFFS_TRACE_TRACING 0x00000100 ++#define YAFFS_TRACE_DELETION 0x00000200 ++#define YAFFS_TRACE_BUFFERS 0x00000400 ++#define YAFFS_TRACE_NANDACCESS 0x00000800 ++#define YAFFS_TRACE_GC_DETAIL 0x00001000 ++#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 ++#define YAFFS_TRACE_MTD 0x00004000 ++#define YAFFS_TRACE_CHECKPOINT 0x00008000 ++ ++#define YAFFS_TRACE_VERIFY 0x00010000 ++#define YAFFS_TRACE_VERIFY_NAND 0x00020000 ++#define YAFFS_TRACE_VERIFY_FULL 0x00040000 ++#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 ++ ++ ++#define YAFFS_TRACE_ERROR 0x40000000 ++#define YAFFS_TRACE_BUG 0x80000000 ++#define YAFFS_TRACE_ALWAYS 0xF0000000 ++ ++ ++#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0) ++ ++#ifndef CONFIG_YAFFS_WINCE ++#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__)) ++#endif ++ ++#endif diff --git a/target/linux/generic-2.6/patches-2.6.22/900-headers_type_and_time.patch b/target/linux/generic-2.6/patches-2.6.22/900-headers_type_and_time.patch new file mode 100644 index 0000000000..7eedc234ee --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/900-headers_type_and_time.patch @@ -0,0 +1,48 @@ +diff -urN linux-2.6.21.1.old/include/linux/time.h linux-2.6.21.1.dev/include/linux/time.h +--- linux-2.6.21.1.old/include/linux/time.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/linux/time.h 2007-05-26 21:23:19.859617680 +0200 +@@ -1,6 +1,10 @@ + #ifndef _LINUX_TIME_H + #define _LINUX_TIME_H + ++#ifndef __KERNEL__ ++#include <time.h> ++#else ++ + #include <linux/types.h> + + #ifdef __KERNEL__ +@@ -225,4 +229,6 @@ + */ + #define TIMER_ABSTIME 0x01 + ++#endif /* __KERNEL__ DEBIAN */ ++ + #endif +diff -urN linux-2.6.21.1.old/include/linux/types.h linux-2.6.21.1.dev/include/linux/types.h +--- linux-2.6.21.1.old/include/linux/types.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/linux/types.h 2007-05-26 21:23:19.859617680 +0200 +@@ -1,6 +1,14 @@ + #ifndef _LINUX_TYPES_H + #define _LINUX_TYPES_H + ++/* Debian: Use userland types instead. */ ++#ifndef __KERNEL__ ++# include <sys/types.h> ++/* For other kernel headers. */ ++# include <linux/posix_types.h> ++# include <asm/types.h> ++#else ++ + #ifdef __KERNEL__ + + #define BITS_TO_LONGS(bits) \ +@@ -162,6 +170,8 @@ + + #endif /* __KERNEL_STRICT_NAMES */ + ++#endif /* __KERNEL__ DEBIAN */ ++ + /* + * Below are truly Linux-specific types that should never collide with + * any application/library that wants linux/types.h. diff --git a/target/linux/generic-2.6/patches-2.6.22/902-darwin_scripts_include.patch b/target/linux/generic-2.6/patches-2.6.22/902-darwin_scripts_include.patch new file mode 100644 index 0000000000..8dd1e74841 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/902-darwin_scripts_include.patch @@ -0,0 +1,108 @@ +diff -urN linux-2.6.21.1.old/scripts/genksyms/parse.c_shipped linux-2.6.21.1.dev/scripts/genksyms/parse.c_shipped +--- linux-2.6.21.1.old/scripts/genksyms/parse.c_shipped 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/genksyms/parse.c_shipped 2007-05-26 21:26:23.565690112 +0200 +@@ -144,7 +144,9 @@ + + + #include <assert.h> ++#ifndef __APPLE__ + #include <malloc.h> ++#endif + #include "genksyms.h" + + static int is_typedef; +diff -urN linux-2.6.21.1.old/scripts/genksyms/parse.y linux-2.6.21.1.dev/scripts/genksyms/parse.y +--- linux-2.6.21.1.old/scripts/genksyms/parse.y 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/genksyms/parse.y 2007-05-26 21:26:23.563690416 +0200 +@@ -24,7 +24,9 @@ + %{ + + #include <assert.h> ++#ifndef __APPLE__ + #include <malloc.h> ++#endif + #include "genksyms.h" + + static int is_typedef; +diff -urN linux-2.6.21.1.old/scripts/kallsyms.c linux-2.6.21.1.dev/scripts/kallsyms.c +--- linux-2.6.21.1.old/scripts/kallsyms.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/kallsyms.c 2007-05-26 21:26:23.579687984 +0200 +@@ -30,6 +30,35 @@ + #include <stdlib.h> + #include <string.h> + #include <ctype.h> ++#ifdef __APPLE__ ++/* Darwin has no memmem implementation, this one is ripped of the uClibc-0.9.28 source */ ++void *memmem (const void *haystack, size_t haystack_len, ++ const void *needle, size_t needle_len) ++{ ++ const char *begin; ++ const char *const last_possible ++ = (const char *) haystack + haystack_len - needle_len; ++ ++ if (needle_len == 0) ++ /* The first occurrence of the empty string is deemed to occur at ++ the beginning of the string. */ ++ return (void *) haystack; ++ ++ /* Sanity check, otherwise the loop might search through the whole ++ memory. */ ++ if (__builtin_expect (haystack_len < needle_len, 0)) ++ return NULL; ++ ++ for (begin = (const char *) haystack; begin <= last_possible; ++begin) ++ if (begin[0] == ((const char *) needle)[0] && ++ !memcmp ((const void *) &begin[1], ++ (const void *) ((const char *) needle + 1), ++ needle_len - 1)) ++ return (void *) begin; ++ ++ return NULL; ++} ++#endif + + #define KSYM_NAME_LEN 127 + +diff -urN linux-2.6.21.1.old/scripts/kconfig/Makefile linux-2.6.21.1.dev/scripts/kconfig/Makefile +--- linux-2.6.21.1.old/scripts/kconfig/Makefile 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/kconfig/Makefile 2007-05-26 21:26:23.553691936 +0200 +@@ -87,6 +87,9 @@ + # we really need to do so. (Do not call gcc as part of make mrproper) + HOST_EXTRACFLAGS = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags) + HOST_LOADLIBES = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC)) ++ifeq ($(shell uname -s),Darwin) ++HOST_LOADLIBES += -lncurses ++endif + + HOST_EXTRACFLAGS += -DLOCALE + +diff -urN linux-2.6.21.1.old/scripts/mod/mk_elfconfig.c linux-2.6.21.1.dev/scripts/mod/mk_elfconfig.c +--- linux-2.6.21.1.old/scripts/mod/mk_elfconfig.c 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/mod/mk_elfconfig.c 2007-05-26 21:26:23.553691936 +0200 +@@ -1,7 +1,11 @@ + #include <stdio.h> + #include <stdlib.h> + #include <string.h> ++#ifndef __APPLE__ + #include <elf.h> ++#else ++#include "../../../../../tools/sstrip/include/elf.h" ++#endif + + int + main(int argc, char **argv) +diff -urN linux-2.6.21.1.old/scripts/mod/modpost.h linux-2.6.21.1.dev/scripts/mod/modpost.h +--- linux-2.6.21.1.old/scripts/mod/modpost.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/mod/modpost.h 2007-05-26 21:26:23.553691936 +0200 +@@ -7,7 +7,11 @@ + #include <sys/mman.h> + #include <fcntl.h> + #include <unistd.h> ++#ifndef __APPLE__ + #include <elf.h> ++#else ++#include "../../../../../tools/sstrip/include/elf.h" ++#endif + + #include "elfconfig.h" + diff --git a/target/linux/generic-2.6/patches-2.6.22/903-stddef_include.patch b/target/linux/generic-2.6/patches-2.6.22/903-stddef_include.patch new file mode 100644 index 0000000000..9de81aafbb --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/903-stddef_include.patch @@ -0,0 +1,18 @@ +diff -urN linux-2.6.21.1.old/include/linux/stddef.h linux-2.6.21.1.dev/include/linux/stddef.h +--- linux-2.6.21.1.old/include/linux/stddef.h 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/include/linux/stddef.h 2007-05-26 21:29:46.108898864 +0200 +@@ -16,6 +16,7 @@ + false = 0, + true = 1 + }; ++#endif /* __KERNEL__ */ + + #undef offsetof + #ifdef __compiler_offsetof +@@ -23,6 +24,5 @@ + #else + #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER) + #endif +-#endif /* __KERNEL__ */ + + #endif diff --git a/target/linux/generic-2.6/patches-2.6.22/904-ls_time_locale.patch b/target/linux/generic-2.6/patches-2.6.22/904-ls_time_locale.patch new file mode 100644 index 0000000000..175a93ba73 --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.22/904-ls_time_locale.patch @@ -0,0 +1,21 @@ +diff -urN linux-2.6.21.1.old/scripts/gen_initramfs_list.sh linux-2.6.21.1.dev/scripts/gen_initramfs_list.sh +--- linux-2.6.21.1.old/scripts/gen_initramfs_list.sh 2007-04-27 23:49:26.000000000 +0200 ++++ linux-2.6.21.1.dev/scripts/gen_initramfs_list.sh 2007-05-26 21:32:53.679383816 +0200 +@@ -125,7 +125,7 @@ + str="${ftype} ${name} ${location} ${str}" + ;; + "nod") +- local dev=`LC_ALL=C ls -l "${location}"` ++ local dev=`LC_ALL=C ls -l --time-style=locale "${location}"` + local maj=`field 5 ${dev}` + local min=`field 6 ${dev}` + maj=${maj%,} +@@ -135,7 +135,7 @@ + str="${ftype} ${name} ${str} ${dev} ${maj} ${min}" + ;; + "slink") +- local target=`field 11 $(LC_ALL=C ls -l "${location}")` ++ local target=`field 11 $(LC_ALL=C ls -l --time-style=locale "${location}")` + str="${ftype} ${name} ${target} ${str}" + ;; + *) |