diff options
Diffstat (limited to 'target/linux/rb532-2.6/patches/510-Yaffs.patch')
| -rw-r--r-- | target/linux/rb532-2.6/patches/510-Yaffs.patch | 15559 |
1 files changed, 8679 insertions, 6880 deletions
diff --git a/target/linux/rb532-2.6/patches/510-Yaffs.patch b/target/linux/rb532-2.6/patches/510-Yaffs.patch index 937b928160..d7b9c976b4 100644 --- a/target/linux/rb532-2.6/patches/510-Yaffs.patch +++ b/target/linux/rb532-2.6/patches/510-Yaffs.patch @@ -1,65 +1,27 @@ -diff --git a/fs/Kconfig b/fs/Kconfig -index f9b5842..556f12a 100644 ---- a/fs/Kconfig -+++ b/fs/Kconfig -@@ -1022,6 +1022,15 @@ config EFS_FS +diff -urN linux.old/fs/Kconfig linux.dev/fs/Kconfig +--- linux.old/fs/Kconfig 2006-11-29 22:57:37.000000000 +0100 ++++ linux.dev/fs/Kconfig 2006-12-14 04:21:47.000000000 +0100 +@@ -1202,6 +1202,8 @@ To compile the EFS file system support as a module, choose M here: the module will be called efs. -+config YAFFS_FS -+ tristate "Yet Another Flash File System (YAFFS) support" -+ depends on MTD -+ help -+ JFFS is the Journaling Flash File System developed by Axis -+ Communications in Sweden, aimed at providing a crash/powerdown-safe -+ file system for disk-less embedded devices. Further information is -+ available at (<http://developer.axis.com/software/jffs/>). ++source "fs/yaffs2/Kconfig" + config JFFS_FS tristate "Journalling Flash File System (JFFS) support" - depends on MTD -diff --git a/fs/Makefile b/fs/Makefile -index 078d3d1..2062d2f 100644 ---- a/fs/Makefile -+++ b/fs/Makefile -@@ -84,6 +85,7 @@ obj-$(CONFIG_UFS_FS) += ufs/ - obj-$(CONFIG_EFS_FS) += efs/ - obj-$(CONFIG_JFFS_FS) += jffs/ - obj-$(CONFIG_JFFS2_FS) += jffs2/ -+obj-$(CONFIG_YAFFS_FS) += yaffs/ - obj-$(CONFIG_AFFS_FS) += affs/ - obj-$(CONFIG_ROMFS_FS) += romfs/ - obj-$(CONFIG_QNX4FS_FS) += qnx4/ -diff --git a/fs/yaffs/Makefile b/fs/yaffs/Makefile -new file mode 100644 -index 0000000..615c2b2 ---- /dev/null -+++ b/fs/yaffs/Makefile -@@ -0,0 +1,18 @@ -+# -+# Makefile for the Linux msdos filesystem routines. -+# -+# Note! Dependencies are done automagically by 'make dep', which also -+# removes any old dependencies. DON'T put your own dependencies here -+# unless it's something special (ie not a .c file). -+# -+# Note 2! The CFLAGS definitions are now in the main makefile. -+ -+ -+EXTRA_CFLAGS += -DCONFIG_YAFFS_YAFFS1 -DCONFIG_YAFFS_YAFFS2 -+ -+ -+obj-$(CONFIG_YAFFS_FS) += yaffs.o -+ -+yaffs-y = yaffs_fs.o yaffs_guts.o yaffs_mtdif.o yaffs_tagscompat.o \ -+ yaffs_packedtags2.o yaffs_mtdif2.o yaffs_tagsvalidity.o \ -+ yaffs_ecc.o -diff --git a/fs/yaffs/devextras.h b/fs/yaffs/devextras.h -new file mode 100644 -index 0000000..752c2cc ---- /dev/null -+++ b/fs/yaffs/devextras.h -@@ -0,0 +1,271 @@ + depends on MTD && BLOCK +diff -urN linux.old/fs/Makefile linux.dev/fs/Makefile +--- linux.old/fs/Makefile 2006-11-29 22:57:37.000000000 +0100 ++++ linux.dev/fs/Makefile 2006-12-14 04:21:47.000000000 +0100 +@@ -114,3 +114,4 @@ + obj-$(CONFIG_DEBUG_FS) += debugfs/ + obj-$(CONFIG_OCFS2_FS) += ocfs2/ + obj-$(CONFIG_GFS2_FS) += gfs2/ ++obj-$(CONFIG_YAFFS_FS) += yaffs2/ +diff -urN linux.old/fs/yaffs2/devextras.h linux.dev/fs/yaffs2/devextras.h +--- linux.old/fs/yaffs2/devextras.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/devextras.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,265 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * devextras.h @@ -79,10 +41,10 @@ index 0000000..752c2cc + * Most of these are from kernel includes placed here so we can use them in + * applications. + * -+ * $Id: devextras.h,v 1.1 2004/11/03 08:14:07 charles Exp $ ++ * $Id: devextras.h,v 1.2 2005/08/11 02:37:49 marty Exp $ + * + */ -+ ++ +#ifndef __EXTRAS_H__ +#define __EXTRAS_H__ + @@ -93,12 +55,11 @@ index 0000000..752c2cc + +#if !(defined __KERNEL__) || (defined WIN32) + -+// User space defines -+ -+typedef unsigned char __u8; -+typedef unsigned short __u16; -+typedef unsigned __u32; ++/* User space defines */ + ++typedef unsigned char __u8; ++typedef unsigned short __u16; ++typedef unsigned __u32; + +/* + * Simple doubly linked list implementation. @@ -109,9 +70,8 @@ index 0000000..752c2cc + * generate better code by using them directly rather than + * using the generic single-entry routines. + */ -+ -+ #define prefetch(x) 1 -+ ++ ++#define prefetch(x) 1 + +struct list_head { + struct list_head *next, *prev; @@ -132,9 +92,9 @@ index 0000000..752c2cc + * 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) ++static __inline__ void __list_add(struct list_head *new, ++ struct list_head *prev, ++ struct list_head *next) +{ + next->prev = new; + new->next = next; @@ -163,7 +123,8 @@ index 0000000..752c2cc + * 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) ++static __inline__ void list_add_tail(struct list_head *new, ++ struct list_head *head) +{ + __list_add(new, head->prev, head); +} @@ -175,8 +136,8 @@ index 0000000..752c2cc + * 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) ++static __inline__ void __list_del(struct list_head *prev, ++ struct list_head *next) +{ + next->prev = prev; + prev->next = next; @@ -185,7 +146,8 @@ index 0000000..752c2cc +/** + * 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. ++ * 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) +{ @@ -216,7 +178,8 @@ index 0000000..752c2cc + * @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) ++static __inline__ void list_splice(struct list_head *list, ++ struct list_head *head) +{ + struct list_head *first = list->next; + @@ -251,7 +214,8 @@ index 0000000..752c2cc + pos = pos->next, prefetch(pos->next)) + +/** -+ * list_for_each_safe - iterate over a list safe against removal of list entry ++ * 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. @@ -260,9 +224,6 @@ index 0000000..752c2cc + for (pos = (head)->next, n = pos->next; pos != (head); \ + pos = n, n = pos->next) + -+ -+ -+ +/* + * File types + */ @@ -296,22 +257,20 @@ index 0000000..752c2cc +#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; ++ 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 @@ -323,20 +282,614 @@ index 0000000..752c2cc + +#endif + -+ -+ +#if defined WIN32 +#undef new -+#endif ++#endif ++ ++#endif +diff -urN linux.old/fs/yaffs2/Kconfig linux.dev/fs/yaffs2/Kconfig +--- linux.old/fs/yaffs2/Kconfig 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/Kconfig 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,135 @@ ++# ++# 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 ++ ++ If unsure, say Y. ++ ++config YAFFS_DOES_ECC ++ bool "Lets Yaffs do its own ECC" ++ depends on YAFFS_FS && YAFFS_YAFFS1 ++ 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 ++ 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 >= 2048 byte / page larger 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. ++ ++ 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_DISABLE_WIDE_TNODES ++ bool "Turn off wide tnodes" ++ depends on YAFFS_FS ++ default n ++ help ++ Wide tnodes are only used for large 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 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.old/fs/yaffs2/Makefile linux.dev/fs/yaffs2/Makefile +--- linux.old/fs/yaffs2/Makefile 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/Makefile 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,10 @@ ++# ++# 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_mtdif.o yaffs_mtdif2.o +diff -urN linux.old/fs/yaffs2/moduleconfig.h linux.dev/fs/yaffs2/moduleconfig.h +--- linux.old/fs/yaffs2/moduleconfig.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/moduleconfig.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,32 @@ ++#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 ++ ++#endif /* YAFFS_OUT_OF_TREE */ ++ ++#endif /* __YAFFS_CONFIG_H__ */ +diff -urN linux.old/fs/yaffs2/yaffs_checkptrw.c linux.dev/fs/yaffs2/yaffs_checkptrw.c +--- linux.old/fs/yaffs2/yaffs_checkptrw.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_checkptrw.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,384 @@ ++/* YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002 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 1.11 2006/11/11 23:27:04 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->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; ++} ++ ++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; ++ ++ while(i < nBytes && ok) { ++ ++ ++ ++ dev->checkpointBuffer[dev->checkpointByteOffset] = *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; ++ ++ 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->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.old/fs/yaffs2/yaffs_checkptrw.h linux.dev/fs/yaffs2/yaffs_checkptrw.h +--- linux.old/fs/yaffs2/yaffs_checkptrw.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_checkptrw.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,18 @@ ++#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_CheckpointClose(yaffs_Device *dev); ++ ++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev); ++ + +#endif + -diff --git a/fs/yaffs/yaffs_ecc.c b/fs/yaffs/yaffs_ecc.c -new file mode 100644 -index 0000000..166bcad ---- /dev/null -+++ b/fs/yaffs/yaffs_ecc.c -@@ -0,0 +1,287 @@ +diff -urN linux.old/fs/yaffs2/yaffs_ecc.c linux.dev/fs/yaffs2/yaffs_ecc.c +--- linux.old/fs/yaffs2/yaffs_ecc.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_ecc.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,333 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * @@ -351,117 +904,151 @@ index 0000000..166bcad + * modify it under the terms of the GNU Lesser General Public License + * version 2.1 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. -+ * ++ * 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. + */ + -+// 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 1.4 2005/07/31 00:28:04 charles Exp $"; ++const char *yaffs_ecc_c_version = ++ "$Id: yaffs_ecc.c,v 1.7 2006/09/14 22:02:46 charles 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, ++ 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++; ++ while (x) { ++ if (x & 1) ++ r++; + x >>= 1; + } + return r; +} + -+static int yaffs_CountBits32(unsigned x) ++static int yaffs_CountBits32(unsigned x) +{ + int r = 0; -+ while(x) -+ { -+ if(x & 1) r++; ++ while (x) { ++ if (x & 1) ++ r++; + x >>= 1; + } + return r; +} + -+ -+void yaffs_ECCCalculate(const unsigned char *data,unsigned char *ecc) ++/* 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++) -+ { ++ ++ for (i = 0; i < 256; i++) { + b = column_parity_table[*data++]; + col_parity ^= b; + -+ if(b & 0x01) // odd number of bits in the byte ++ 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; ++ 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; ++ 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 @@ -469,30 +1056,28 @@ index 0000000..166bcad + t = ecc[0]; + ecc[0] = ecc[1]; + ecc[1] = t; -+#endif ++#endif +} + -+int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc, const unsigned char *test_ecc) ++ ++/* 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 ++ 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) -+ { -+ // no error -+ return 0; -+ } -+ -+ if( ((d0 ^ (d0 >> 1)) & 0x55) == 0x55 && ++ ++ 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 ++ ((d2 ^ (d2 >> 1)) & 0x54) == 0x54) { ++ /* Single bit (recoverable) error in data */ + + unsigned byte; + unsigned bit; @@ -500,136 +1085,148 @@ index 0000000..166bcad +#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; ++ ++ 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; ++ ++ return 1; /* Corrected the error */ + } -+ -+ if((yaffs_CountBits(d0)+yaffs_CountBits(d1)+yaffs_CountBits(d2)) == 1) -+ { -+ // Reccoverable error in ecc -+ ++ ++ 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; ++ ++ return 1; /* Corrected the error */ + } + -+ // Unrecoverable error -+ ++ /* Unrecoverable error */ ++ + return -1; -+ + +} + + -+ -+void yaffs_ECCCalculateOther(const unsigned char *data,unsigned nBytes, yaffs_ECCOther *eccOther) ++/* ++ * 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++) -+ { ++ ++ for (i = 0; i < nBytes; i++) { + b = column_parity_table[*data++]; + col_parity ^= b; + -+ if(b & 0x01) // odd number of bits in the byte -+ { ++ 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) ++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 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; ++ lDelta = read_ecc->lineParity ^ test_ecc->lineParity; + lDeltaPrime = read_ecc->lineParityPrime ^ test_ecc->lineParityPrime; -+ -+ if((cDelta | lDelta | lDeltaPrime) == 0) -+ { -+ // no error -+ return 0; -+ } -+ -+ if( lDelta == ~lDeltaPrime && -+ (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) // Not correct ++ ++ if ((cDelta | lDelta | lDeltaPrime) == 0) ++ return 0; /* no error */ ++ ++ if (lDelta == ~lDeltaPrime && ++ (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) + { -+ // Single bit (recoverable) error in data ++ /* Single bit (recoverable) error in data */ + + bit = 0; + -+ if(cDelta & 0x20) bit |= 0x04; -+ if(cDelta & 0x08) bit |= 0x02; -+ if(cDelta & 0x02) bit |= 0x01; ++ 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; ++ ++ return 1; /* corrected */ + } -+ -+ if((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) + yaffs_CountBits(cDelta)) == 1) -+ { -+ // Reccoverable error in ecc -+ -+ *read_ecc = *test_ecc; -+ return 1; ++ ++ 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; -+ + -+} ++ /* Unrecoverable error */ + ++ return -1; + ++} + -diff --git a/fs/yaffs/yaffs_ecc.h b/fs/yaffs/yaffs_ecc.h -new file mode 100644 -index 0000000..f96d707 ---- /dev/null -+++ b/fs/yaffs/yaffs_ecc.h -@@ -0,0 +1,41 @@ +diff -urN linux.old/fs/yaffs2/yaffs_ecc.h linux.dev/fs/yaffs2/yaffs_ecc.h +--- linux.old/fs/yaffs2/yaffs_ecc.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_ecc.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,44 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * @@ -644,39 +1241,40 @@ index 0000000..f96d707 + * 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. -+ * -+ */ ++ * 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 -+{ ++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_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); ++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 --git a/fs/yaffs/yaffs_fs.c b/fs/yaffs/yaffs_fs.c -new file mode 100644 -index 0000000..717f41a ---- /dev/null -+++ b/fs/yaffs/yaffs_fs.c -@@ -0,0 +1,1727 @@ +diff -urN linux.old/fs/yaffs2/yaffs_fs.c linux.dev/fs/yaffs2/yaffs_fs.c +--- linux.old/fs/yaffs2/yaffs_fs.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_fs.c 2006-12-14 04:33:02.000000000 +0100 +@@ -0,0 +1,2136 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * yaffs_fs.c @@ -694,11 +1292,12 @@ index 0000000..717f41a + * 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 ++ * >> 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. + * -+ * + * Acknowledgements: + * * Luc van OostenRyck for numerous patches. + * * Nick Bane for numerous patches. @@ -708,12 +1307,11 @@ index 0000000..717f41a + * * Some code bodily lifted from JFFS2. + */ + -+ -+const char *yaffs_fs_c_version = "$Id: yaffs_fs.c,v 1.27 2005/08/04 22:47:36 luc Exp $"; ++const char *yaffs_fs_c_version = ++ "$Id: yaffs_fs.c,v 1.54 2006/10/24 18:09:15 charles Exp $"; +extern const char *yaffs_guts_c_version; + -+ -+#include <linux/config.h> ++#include <linux/autoconf.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/version.h> @@ -727,7 +1325,7 @@ index 0000000..717f41a +#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)) + @@ -735,7 +1333,9 @@ index 0000000..717f41a +#include <asm/statfs.h> +#define UnlockPage(p) unlock_page(p) +#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) -+#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) // FIXME: use sb->s_id instead ? ++ ++/* FIXME: use sb->s_id instead ? */ ++#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) + +#else + @@ -743,6 +1343,11 @@ index 0000000..717f41a +#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 + +#include <asm/uaccess.h> @@ -750,24 +1355,21 @@ index 0000000..717f41a +#include "yportenv.h" +#include "yaffs_guts.h" + ++unsigned yaffs_traceMask = YAFFS_TRACE_ALWAYS | ++ YAFFS_TRACE_BAD_BLOCKS ++ /* | 0xFFFFFFFF */; + -+ -+ -+unsigned yaffs_traceMask = YAFFS_TRACE_ALWAYS | YAFFS_TRACE_BAD_BLOCKS; -+//unsigned yaffs_traceMask = 0xFFFFFFFF; -+ -+ -+#ifdef CONFIG_YAFFS_YAFFS1 +#include <linux/mtd/mtd.h> +#include "yaffs_mtdif.h" +#include "yaffs_mtdif2.h" -+#endif //CONFIG_YAFFS_YAFFS1 -+ -+//#define T(x) printk x -+ + ++/*#define T(x) printk x */ + ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) ++#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->i_private)) ++#else +#define yaffs_InodeToObject(iptr) ((yaffs_Object *)((iptr)->u.generic_ip)) ++#endif +#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) @@ -776,146 +1378,184 @@ index 0000000..717f41a +#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); ++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, ++ loff_t * pos); + -+static int yaffs_file_flush(struct file* file); ++#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_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); ++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); ++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); ++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); ++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); ++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_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(2,5,0)) ++#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_read_inode(struct inode *inode); + -+static void yaffs_put_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); ++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_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); ++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, ++ .readpage = yaffs_readpage, ++ .writepage = yaffs_writepage, ++ .prepare_write = yaffs_prepare_write, ++ .commit_write = yaffs_commit_write, +}; + +static struct file_operations yaffs_file_operations = { -+ .read = generic_file_read, -+ .write = generic_file_write, -+ .mmap = generic_file_mmap, -+ .flush = yaffs_file_flush, -+ .fsync = yaffs_sync_object, ++#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, ++ .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_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, ++ .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, ++ .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, ++ .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) ++static void yaffs_GrossLock(yaffs_Device * dev) +{ -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs locking\n")); ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n")); + + down(&dev->grossLock); +} + -+static void yaffs_GrossUnlock(yaffs_Device *dev) ++static void yaffs_GrossUnlock(yaffs_Device * dev) +{ -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs unlocking\n")); ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n")); + up(&dev->grossLock); + +} + -+static int yaffs_readlink(struct dentry *dentry, char __user *buffer, int buflen) ++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) ++ ++ if (!alias) + return -ENOMEM; + + ret = vfs_readlink(dentry, buffer, buflen, alias); @@ -923,212 +1563,244 @@ index 0000000..717f41a + 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) ++ ++ if (!alias) ++ { + ret = -ENOMEM; -+ else { -+ ret = vfs_follow_link(nd,alias); -+ kfree(alias); -+ } ++ 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); ++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) ++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) ++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; ++ 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 -+ ++ 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 */ + -+ 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 */ ++ /* 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); -+ -+ yaffs_GrossUnlock(dev); ++ /*dget(dentry); // try to solve directory bug */ ++ d_add(dentry, inode); + -+ // return dentry; ++ /* return dentry; */ + return NULL; +#endif + } + ++ } else { ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n")); ++ + } -+ else -+ { -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_lookup not found\n")); -+ -+ } -+ yaffs_GrossUnlock(dev); + -+/* added NCB for 2.5/6 compatability - forces add even if inode is NULL which creates dentry hash*/ -+ d_add(dentry,inode); -+ ++/* 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)); -+ ++ /* return (ERR_PTR(-EIO)); */ ++ +} + -+// For now put inode is just for debugging -+// Put inode is called when the inode **structure** is put. ++/* 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))); -+ ++ 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 ++/* 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) -+ { ++ 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 ant the yaffs_Object. ++ ++ /* Clear the association between the inode and ++ * the yaffs_Object. ++ */ + obj->myInode = NULL; ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) ++ inode->i_private = NULL; ++#else + inode->u.generic_ip = NULL; -+ -+ // If the object freeing was deferred, then the real free happens now. -+ // This should fix the inode inconsistency problem. -+ ++#endif ++ ++ /* 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() ++/* 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; ++ 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); +} + -+ -+static int yaffs_file_flush(struct file* file) ++#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")); ++ ++ 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_FlushFile(obj, 1); + + yaffs_GrossUnlock(dev); + -+ return 0; ++ return 0; +} + -+ -+ -+static int yaffs_readpage_nolock(struct file *f, struct page * pg) ++static int yaffs_readpage_nolock(struct file *f, struct page *pg) +{ -+ // Lifted from jffs2 -+ ++ /* 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)); ++ 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); ++ obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; -+ -+ ++ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) -+ BUG_ON(!PageLocked(pg)); ++ BUG_ON(!PageLocked(pg)); +#else + if (!PageLocked(pg)) -+ PAGE_BUG(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); ++ ++ ret = ++ yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT, ++ PAGE_CACHE_SIZE); + + yaffs_GrossUnlock(dev); -+ -+ if(ret >= 0) ret = 0; ++ ++ if (ret >= 0) ++ ret = 0; + + if (ret) { + ClearPageUptodate(pg); @@ -1141,25 +1813,23 @@ index 0000000..717f41a + flush_dcache_page(pg); + kunmap(pg); + -+ -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_readpage done\n")); ++ 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); ++ int ret = yaffs_readpage_nolock(f, pg); + UnlockPage(pg); + return ret; +} + -+static int yaffs_readpage(struct file *f, struct page * pg) ++static int yaffs_readpage(struct file *f, struct page *pg) +{ -+ return yaffs_readpage_unlock(f,pg); ++ return yaffs_readpage_unlock(f, pg); +} + -+// writepage inspired by/stolen from smbfs -+// ++/* 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) @@ -1168,7 +1838,7 @@ index 0000000..717f41a +#endif +{ + struct address_space *mapping = page->mapping; -+ loff_t offset = (loff_t)page->index << PAGE_CACHE_SHIFT; ++ loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT; + struct inode *inode; + unsigned long end_index; + char *buffer; @@ -1182,10 +1852,14 @@ index 0000000..717f41a + 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")); ++ 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; + } @@ -1193,108 +1867,145 @@ index 0000000..717f41a + end_index = inode->i_size >> PAGE_CACHE_SHIFT; + + /* easy case */ -+ if (page->index < end_index) -+ { ++ if (page->index < end_index) { + nBytes = PAGE_CACHE_SIZE; ++ } else { ++ nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1); + } -+ else -+ { -+ nBytes = inode->i_size & (PAGE_CACHE_SIZE-1); -+ } -+ // What's happening here? -+ ///* OK, are we completely out? */ -+ //if (page->index >= end_index+1 || !offset) -+ // return -EIO; + + 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)); ++ 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); ++ 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)); ++ 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; ++ return (nWritten == nBytes) ? 0 : -ENOSPC; +} + -+ -+ -+static int yaffs_prepare_write(struct file *f, struct page *pg, unsigned offset, unsigned to) ++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); ++ 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) ++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; ++ 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)); ++ 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 -+ { ++ } else { + SetPageUptodate(pg); + } + -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_commit_write returning %d\n",nWritten)); -+ -+ return nWritten; ++ 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) { + + -+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_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_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; @@ -1306,299 +2017,333 @@ index 0000000..717f41a + 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 ++ ++ 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)); ++ 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; ++ 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; + } -+ -+ ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) ++ inode->i_private = obj; ++#else + inode->u.generic_ip = obj; ++#endif + obj->myInode = inode; -+ -+ } -+ else -+ { -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_FileInode invalid parameters\n")); ++ ++ } 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 *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; -+ ++ 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; -+ ++ ++ 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); ++ 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! */ + -+ // NB Side effect: iget calls back to yaffs_read_inode(). -+ // iget also increments the inode's i_count -+ + return inode; +} + -+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, loff_t *pos) ++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, ++ loff_t * pos) +{ + yaffs_Object *obj; -+ int nWritten,ipos; ++ int nWritten, ipos; + struct inode *inode; + yaffs_Device *dev; -+ -+ -+ obj = yaffs_DentryToObject(f->f_dentry); -+ ++ ++ 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) -+ { ++ if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) { + ipos = inode->i_size; -+ } -+ else -+ { ++ } 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)); ++ ++ 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); ++ 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) -+ { ++ 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) -+ { ++ 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))); ++ 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 != n ? -ENOSPC : nWritten; ++ 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; ++ struct list_head *i; + yaffs_Object *l; -+ -+ char name[YAFFS_MAX_NAME_LENGTH +1]; -+ -+ obj = yaffs_DentryToObject(f->f_dentry); ++ ++ 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) -+ { ++ ++ 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) -+ { ++ 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; -+ -+ list_for_each(i,&obj->variant.directoryVariant.children) -+ { ++ ++ /* 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) -+ { ++ 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++; ++ f->f_pos++; + } + } + -+ up_and_out: -+ out: -+ -+ yaffs_GrossUnlock(dev); -+ ++ 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) ++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) ++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")); ++ 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)); ++ ++ 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")); ++ 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)); ++ 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; ++ 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; + } + -+ if(obj) -+ { ++ /* 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))); ++ 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")); ++ } else { ++ T(YAFFS_TRACE_OS, ++ (KERN_DEBUG "yaffs_mknod failed making object\n")); + error = -ENOMEM; + } + -+ yaffs_GrossUnlock(dev); -+ + return error; +} + -+static int yaffs_mkdir(struct inode * dir, struct dentry * dentry, int mode) ++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); ++ 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) -+ { ++ /* attempt to fix dir bug - didn't work */ ++ if (!retVal) { + dget(dentry); + } +#endif @@ -1606,143 +2351,135 @@ index 0000000..717f41a +} + +#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 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")); ++ 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) ++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)); -+ ++ ++ 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); -+ -+ -+ yaffs_GrossUnlock(dev); -+ -+ if( retVal == YAFFS_OK) -+ { ++ ++ 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; + } -+ else -+ { -+ return -ENOTEMPTY; -+ } ++ yaffs_GrossUnlock(dev); ++ return -ENOTEMPTY; +} + -+ +/* + * Create a link... + */ -+static int yaffs_link(struct dentry *old_dentry, struct inode * dir, struct dentry * dentry) ++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_Object *link = NULL; + yaffs_Device *dev; -+ -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_link\n")); -+ ++ ++ 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 ++ if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ + { -+ link = yaffs_Link(yaffs_InodeToObject(dir),dentry->d_name.name,obj); ++ link = ++ yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, ++ obj); + } -+ + -+ if(link) -+ { -+ old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(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))); -+ ++ 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) -+ { -+ ++ if (link) { ++ + return 0; + } -+ -+ -+ return -EPERM; -+} + ++ return -EPERM; ++} + -+static int yaffs_symlink(struct inode * dir, struct dentry *dentry, const char * symname) ++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")); -+ ++ ++ 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); ++ obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, ++ S_IFLNK | S_IRWXUGO, uid, gid, symname); + yaffs_GrossUnlock(dev); + -+ if(obj) -+ { ++ if (obj) { ++ ++ struct inode *inode; + -+ 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")); ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n")); + return 0; -+ } -+ else -+ { -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"symlink not created\n")); ++ } 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) ++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")); ++ ++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n")); + yaffs_GrossLock(dev); -+ yaffs_FlushFile(obj,1); ++ yaffs_FlushFile(obj, 1); + yaffs_GrossUnlock(dev); + return 0; +} @@ -1752,54 +2489,56 @@ index 0000000..717f41a + * + * 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) ++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; -+ int removed = 0; + 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); + -+ // 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)) -+ { ++ ++ 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 -+ { -+ -+ // Unlink the target if it exists -+ removed = yaffs_Unlink(yaffs_InodeToObject(new_dir),new_dentry->d_name.name); ++ } 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); + -+ -+ 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(removed == YAFFS_OK) -+ { ++ ++ if (retVal == YAFFS_OK) { ++ if(target) { + new_dentry->d_inode->i_nlink--; + mark_inode_dirty(new_dentry->d_inode); + } -+ ++ + return 0; -+ } -+ else -+ { ++ } else { + return -ENOTEMPTY; + } -+ + +} + @@ -1808,84 +2547,147 @@ index 0000000..717f41a + 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) -+ { -+ ++ ++ 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) -+ { ++ if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) == ++ YAFFS_OK) { + error = 0; -+ } -+ else -+ { ++ } else { + error = -EPERM; + } + yaffs_GrossUnlock(dev); + if (!error) -+ error = inode_setattr(inode,attr); ++ error = inode_setattr(inode, attr); + } + return error; +} + -+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) ++#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) -+#endif +{ -+ -+ + yaffs_Device *dev = yaffs_SuperToDevice(sb); -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_statfs\n")); ++#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->nBytesPerChunk) -+ { -+ -+ buf->f_blocks = (dev->endBlock - dev->startBlock + 1) * dev->nChunksPerBlock/ -+ (sb->s_blocksize/dev->nBytesPerChunk); -+ buf->f_bfree = yaffs_GetNumberOfFreeChunks(dev)/ -+ (sb->s_blocksize/dev->nBytesPerChunk); -+ } -+ else -+ { -+ -+ buf->f_blocks = (dev->endBlock - dev->startBlock + 1) * dev->nChunksPerBlock * -+ (dev->nBytesPerChunk/sb->s_blocksize); -+ buf->f_bfree = yaffs_GetNumberOfFreeChunks(dev) * -+ (dev->nBytesPerChunk/sb->s_blocksize); ++ 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; -+ ++ buf->f_bavail = buf->f_bfree; ++ + yaffs_GrossUnlock(dev); + return 0; +} + -+static void yaffs_read_inode (struct inode *inode) ++ ++ ++static int yaffs_do_sync_fs(struct super_block *sb) +{ -+ // NB This is called as a side effect of other functions and -+ // thus gross locking should always be in place already. ++ ++ 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")); + -+ yaffs_Object *obj ; -+ yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); ++ return 0; /* yaffs_do_sync_fs(sb);*/ + -+ T(YAFFS_TRACE_OS,(KERN_DEBUG"yaffs_read_inode for %d\n",(int)inode->i_ino)); ++} ++ + -+ obj = yaffs_FindObjectByNumber(dev,inode->i_ino); ++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); + -+ yaffs_FillInodeFromObject(inode,obj); ++ obj = yaffs_FindObjectByNumber(dev, inode->i_ino); ++ ++ yaffs_FillInodeFromObject(inode, obj); + ++ yaffs_GrossUnlock(dev); +} + +static LIST_HEAD(yaffs_dev_list); @@ -1893,250 +2695,328 @@ index 0000000..717f41a +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); -+ if(dev->putSuperFunc) -+ { -+ dev->putSuperFunc(sb); ++ ++ yaffs_FlushEntireDeviceCache(dev); ++ ++ if (dev->putSuperFunc) { ++ dev->putSuperFunc(sb); + } ++ ++ yaffs_CheckpointSave(dev); + 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); +} + + -+#ifdef CONFIG_YAFFS_YAFFS1 -+ -+static void yaffs_MTDPutSuper(struct super_block *sb) ++static void yaffs_MTDPutSuper(struct super_block *sb) +{ -+ ++ + struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; -+ -+ if(mtd->sync) -+ { ++ ++ if (mtd->sync) { + mtd->sync(mtd); + } -+ ++ + put_mtd_device(mtd); +} + -+#endif + ++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; ++} + -+static struct super_block *yaffs_internal_read_super(int yaffsVersion, struct super_block * sb, void * data, int silent) ++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; ++ struct inode *inode = NULL; ++ struct dentry *root; + yaffs_Device *dev = 0; -+ char devname_buf[BDEVNAME_SIZE+1]; ++ char devname_buf[BDEVNAME_SIZE + 1]; + struct mtd_info *mtd; + int err; -+ ++ + 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 (!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)); + + 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))); ++ 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")); ++ 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))); + -+ 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 ++ /* 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))); ++ 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)); ++ /* 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,(" oobblock %d\n",mtd->oobblock)); -+ 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)); ++ 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)); ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ T(YAFFS_TRACE_OS, (" writesize %d\n", mtd->writesize)); ++#else ++ T(YAFFS_TRACE_OS, (" oobblock %d\n", mtd->oobblock)); ++#endif ++ 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 == 2) -+ { -+ // Check for version 2 style functions -+ if(!mtd->erase || -+// !mtd->block_isbad || -+// !mtd->block_markbad || -+ !mtd->read || -+ !mtd->write || -+ !mtd->write_ecc || -+ !mtd->read_ecc || -+ !mtd->read_oob || -+ !mtd->write_oob ) -+ { -+ T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support required functions\n"));; ++ 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(mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE || -+ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) -+ { -+ T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support have the right page sizes\n")); ++ ++#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 || -+ !mtd->write_ecc || -+ !mtd->read_ecc || -+ !mtd->read_oob || -+ !mtd->write_oob ) -+ { -+ T(YAFFS_TRACE_ALWAYS,("yaffs: MTD device does not support required functions\n"));; ++ } ++ } 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(mtd->oobblock != 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")); ++ ++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) ++ if (mtd->writesize < YAFFS_BYTES_PER_CHUNK || ++#else ++ if (mtd->oobblock < YAFFS_BYTES_PER_CHUNK || ++#endif ++ 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 ++ /* 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); ++ sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); +#else -+ sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device),GFP_KERNEL); ++ 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")); ++ 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; ++ memset(dev, 0, sizeof(yaffs_Device)); ++ dev->genericDevice = mtd; + dev->name = mtd->name; + -+ // Set up the memory size parameters.... -+ ++ /* 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->nBytesPerChunk = YAFFS_BYTES_PER_CHUNK; ++ dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK; + dev->nReservedBlocks = 5; -+ dev->nShortOpCaches = 10; // Enable short op caching -+ -+ -+ // ... and the functions. -+ if(yaffsVersion == 2) -+ { -+ dev->writeChunkWithTagsToNAND = nandmtd2_WriteChunkWithTagsToNAND; -+ dev->readChunkWithTagsFromNAND = nandmtd2_ReadChunkWithTagsFromNAND; ++ dev->nShortOpCaches = 10; /* Enable short op caching */ ++ ++ /* ... 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; -+ dev->nBytesPerChunk = mtd->oobblock; ++#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 = 0; + dev->startBlock = 0; + dev->endBlock = nBlocks - 1; -+ } -+ else -+ { ++ } else { + dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; + dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; + dev->isYaffs2 = 0; + } -+ // ... and common functions ++ /* ... 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 ++ + /* 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")); ++ yaffs_GrossLock(dev); + -+ // Create root inode -+ if(err == YAFFS_OK) -+ inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0,yaffs_Root(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; -+ -+// added NCB -+ inode->i_op = & yaffs_dir_inode_operations; -+ inode->i_fop = & yaffs_dir_operations; + -+ T(YAFFS_TRACE_OS,("yaffs_read_super: got root inode\n")); -+ ++ 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")); ++ T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n")); + + if (!root) { + iput(inode); @@ -2144,123 +3024,148 @@ index 0000000..717f41a + } + sb->s_root = root; + -+ T(YAFFS_TRACE_OS,("yaffs_read_super: done\n")); ++ T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n")); + return sb; +} + + -+ -+#ifdef CONFIG_YAFFS_YAFFS1 -+ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) -+static int yaffs_internal_read_super_mtd(struct super_block * sb, void * data, int silent) ++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 : -1; ++ return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; +} + -+static struct super_block *yaffs_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data) ++#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); ++ 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, ++ .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) ++static struct super_block *yaffs_read_super(struct super_block *sb, void *data, ++ int silent) +{ -+ return yaffs_internal_read_super(1,sb,data,silent); ++ return yaffs_internal_read_super(1, sb, data, silent); +} + -+static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, FS_REQUIRES_DEV); ++static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, ++ FS_REQUIRES_DEV); +#endif + -+#endif // CONFIG_YAFFS_YAFFS1 + +#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) ++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 : -1; ++ return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; +} + -+static struct super_block *yaffs2_read_super(struct file_system_type * fs, int flags, const char *dev_name, void *data) ++#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); ++ 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, ++ .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) ++static struct super_block *yaffs2_read_super(struct super_block *sb, ++ void *data, int silent) +{ -+ return yaffs_internal_read_super(2,sb,data,silent); ++ return yaffs_internal_read_super(2, sb, data, silent); +} + -+static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, FS_REQUIRES_DEV); ++static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, ++ FS_REQUIRES_DEV); +#endif + -+#endif // CONFIG_YAFFS_YAFFS2 -+ -+ -+ ++#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,"chunkGroupBits..... %d\n",dev->chunkGroupBits); -+ buf +=sprintf(buf,"chunkGroupSize..... %d\n",dev->chunkGroupSize); -+ buf +=sprintf(buf,"nErasedBlocks...... %d\n",dev->nErasedBlocks); -+ 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,"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 -+ ) ++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, "chunkGroupBits..... %d\n", dev->chunkGroupBits); ++ buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); ++ buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); ++ 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, "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; @@ -2277,8 +3182,9 @@ index 0000000..717f41a + + /* 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); ++ 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 */ @@ -2291,108 +3197,211 @@ index 0000000..717f41a + n++; + continue; + } -+ buf += sprintf(buf,"\nDevice %d \"%s\"\n", n, dev->name); ++ 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; ++ return buf - page < count ? buf - page : count; +} + -+// Stuff to handle installation of file systems -+struct file_system_to_install -+{ -+ struct file_system_type *fst; -+ int installed; ++/** ++ * Set the verbosity of the warnings and error messages. ++ * ++ */ ++ ++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}, ++ {"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}, ++ {"write", YAFFS_TRACE_WRITE}, ++ {"all", 0xffffffff}, ++ {"none", 0}, ++ {NULL, 0}, +}; + -+static struct file_system_to_install fs_to_install[] = ++static int yaffs_proc_write(struct file *file, const char *buf, ++ unsigned long count, void *data) +{ -+#ifdef CONFIG_YAFFS_YAFFS1 -+ { &yaffs_fs_type,0}, -+#endif -+#ifdef CONFIG_YAFFS_YAFFS2 -+ { &yaffs2_fs_type,0}, -+#endif -+ { NULL,0} ++ unsigned rg = 0, mask_bitfield; ++ char *end, *mask_name; ++ int i; ++ int done = 0; ++ int add, len; ++ 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 (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) { ++ 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; ++ 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")); ++ 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); + -+ /* Install the proc_fs entry */ -+ my_proc_entry = create_proc_read_entry("yaffs", -+ S_IRUGO | S_IFREG, -+ &proc_root, -+ yaffs_proc_read, -+ NULL); -+ if(!my_proc_entry) -+ { -+ 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; ++ 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++; -+ } ++ 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++; ++ } + +} + @@ -2400,18 +3409,14 @@ index 0000000..717f41a +module_exit(exit_yaffs_fs) + +MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); -+MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002,2003,2004"); ++MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006"); +MODULE_LICENSE("GPL"); -+ -+ -diff --git a/fs/yaffs/yaffs_guts.c b/fs/yaffs/yaffs_guts.c -new file mode 100644 -index 0000000..bf13f91 ---- /dev/null -+++ b/fs/yaffs/yaffs_guts.c -@@ -0,0 +1,6346 @@ +diff -urN linux.old/fs/yaffs2/yaffs_guts.c linux.dev/fs/yaffs2/yaffs_guts.c +--- linux.old/fs/yaffs2/yaffs_guts.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_guts.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,6675 @@ +/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. + * + * Copyright (C) 2002 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering @@ -2423,9 +3428,9 @@ index 0000000..bf13f91 + * published by the Free Software Foundation. + * + */ -+ //yaffs_guts.c + -+const char *yaffs_guts_c_version="$Id: yaffs_guts.c,v 1.15 2005/08/02 04:24:22 charles Exp $"; ++const char *yaffs_guts_c_version = ++ "$Id: yaffs_guts.c,v 1.45 2006/11/14 03:07:17 charles Exp $"; + +#include "yportenv.h" + @@ -2433,8 +3438,17 @@ index 0000000..bf13f91 +#include "yaffs_guts.h" +#include "yaffs_tagsvalidity.h" + -+ +#include "yaffs_tagscompat.h" ++#ifndef CONFIG_YAFFS_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); @@ -2443,550 +3457,543 @@ index 0000000..bf13f91 + +#define YAFFS_PASSIVE_GC_CHUNKS 2 + -+#if 0 -+// Use Steven Hill's ECC struff instead -+// External functions for ECC on data -+void nand_calculate_ecc (const u_char *dat, u_char *ecc_code); -+int nand_correct_data (u_char *dat, u_char *read_ecc, u_char *calc_ecc); -+#define yaffs_ECCCalculate(data,ecc) nand_calculate_ecc(data,ecc) -+#define yaffs_ECCCorrect(data,read_ecc,calc_ecc) nand_correct_ecc(data,read_ecc,calc_ecc) -+#else +#include "yaffs_ecc.h" -+#endif + -+#if 0 -+// countBits is a quick way of counting the number of bits in a byte. -+// ie. countBits[n] holds the number of 1 bits in a byte with the value n. -+ -+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 -+}; + -+static int yaffs_CountBits(__u8 x) -+{ -+ int retVal; -+ retVal = yaffs_countBitsTable[x]; -+ return retVal; -+} -+ -+#endif -+ -+ -+#if 0 -+// Stuff using yea olde tags -+static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, yaffs_Tags *tagsPtr); -+static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,yaffs_Tags *tagsPtr); -+ -+static int yaffs_ReadChunkTagsFromNAND(yaffs_Device *dev,int chunkInNAND, yaffs_Tags *tags, int *chunkDeleted); -+static int yaffs_TagsMatch(const yaffs_Tags *tags, int objectId, int chunkInObject, int chunkDeleted); -+#else -+#endif -+ -+// NAND access -+ -+ -+static Y_INLINE int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *buffer, yaffs_ExtendedTags *tags); -+static Y_INLINE int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND, const __u8 *data, yaffs_ExtendedTags *tags); -+static Y_INLINE int yaffs_MarkBlockBad(yaffs_Device *dev, int blockNo); -+static Y_INLINE int yaffs_QueryInitialBlockState(yaffs_Device *dev,int blockNo, yaffs_BlockState *state,unsigned *sequenceNumber); -+// Local prototypes -+static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev, const __u8 *buffer, yaffs_ExtendedTags *tags, int useReserve); -+#if 0 -+static int yaffs_CheckObjectHashSanity(yaffs_Device *dev); -+#endif -+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); ++/* 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 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 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 __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); + -+// Robustification (if it ever comes about...) -+static void yaffs_RetireBlock(yaffs_Device *dev,int blockInNAND); -+#if 0 -+static void yaffs_HandleReadDataError(yaffs_Device *dev,int chunkInNAND); -+#endif -+static void yaffs_HandleWriteChunkError(yaffs_Device *dev,int chunkInNAND); -+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); ++static int yaffs_UnlinkWorker(yaffs_Object * obj); ++static void yaffs_DestroyObject(yaffs_Object * obj); + -+static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,int chunkInNAND); ++static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId, ++ int chunkInObject); + -+static int yaffs_UnlinkWorker(yaffs_Object *obj); -+static void yaffs_DestroyObject(yaffs_Object *obj); ++loff_t yaffs_GetFileSize(yaffs_Object * obj); + -+#if 0 -+static int yaffs_VerifyCompare(const __u8 *d0, const __u8 * d1, const yaffs_Spare *s0, const yaffs_Spare *s1,int dataSize); -+#endif ++static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr); + -+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); -+ -+static void yaffs_VerifyFreeChunks(yaffs_Device *dev); ++static void yaffs_VerifyFreeChunks(yaffs_Device * dev); + +#ifdef YAFFS_PARANOID -+static int yaffs_CheckFileSanity(yaffs_Object *in); ++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_InvalidateWholeChunkCache(yaffs_Object * in); ++static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId); ++ ++static void yaffs_InvalidateCheckpoint(yaffs_Device *dev); ++ + -+static int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *buffer, yaffs_ExtendedTags *tags) -+{ -+ chunkInNAND -= dev->chunkOffset; -+ -+ if(dev->readChunkWithTagsFromNAND) -+ return dev->readChunkWithTagsFromNAND(dev,chunkInNAND,buffer,tags); -+ else -+ return yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,chunkInNAND,buffer,tags); -+} + -+static Y_INLINE int yaffs_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND, const __u8 *buffer, yaffs_ExtendedTags *tags) ++/* Function to calculate chunk and offset */ ++ ++static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset) +{ -+ 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)); ++ if(dev->chunkShift){ ++ /* Easy-peasy power of 2 case */ ++ *chunk = (__u32)(addr >> dev->chunkShift); ++ *offset = (__u32)(addr & dev->chunkMask); + } -+ else ++ else if(dev->crumbsPerChunk) + { -+ T(YAFFS_TRACE_ERROR,(TSTR("Writing with no tags" TENDSTR))); -+ YBUG(); ++ /* 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); + } -+ -+ if(dev->writeChunkWithTagsToNAND) -+ return dev->writeChunkWithTagsToNAND(dev,chunkInNAND,buffer,tags); + else -+ return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev,chunkInNAND,buffer,tags); ++ YBUG(); +} + -+static Y_INLINE 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); -+} -+static Y_INLINE int yaffs_QueryInitialBlockState(yaffs_Device *dev,int blockNo, yaffs_BlockState *state, unsigned *sequenceNumber) ++/* 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) +{ -+ blockNo -= dev->blockOffset; ++ int extraBits; ++ int nShifts; + -+ if(dev->queryNANDBlock) -+ return dev->queryNANDBlock(dev,blockNo,state,sequenceNumber); -+ else -+ return yaffs_TagsCompatabilityQueryNANDBlock(dev,blockNo,state,sequenceNumber); -+} -+ -+static int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,int blockInNAND) -+{ -+ int result; ++ nShifts = extraBits = 0; + -+ blockInNAND -= dev->blockOffset; -+ -+ dev->nBlockErasures++; -+ result = dev->eraseBlockInNAND(dev,blockInNAND); ++ while(x>1){ ++ if(x & 1) extraBits++; ++ x>>=1; ++ nShifts++; ++ } + -+ if(!result)result = dev->eraseBlockInNAND(dev,blockInNAND); // If at first we don't succeed, try again *once*. -+ return result; ++ if(extraBits) ++ nShifts++; ++ ++ return nShifts; +} + -+static int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev) ++/* Function to return the number of shifts to get a 1 in bit 0 ++ */ ++ ++static __u32 ShiftDiv(__u32 x) +{ -+ return dev->initialiseNAND(dev); ++ int nShifts; ++ ++ nShifts = 0; ++ ++ if(!x) return 0; ++ ++ while( !(x&1)){ ++ x>>=1; ++ nShifts++; ++ } ++ ++ return nShifts; +} + + + ++/* ++ * Temporary buffer manipulations. ++ */ + -+// Temporary buffer manipulations -+ -+static __u8 *yaffs_GetTempBuffer(yaffs_Device *dev,int lineNo) ++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) -+ { ++ 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) -+ { ++ if ((i + 1) > dev->maxTemp) { + dev->maxTemp = i + 1; -+ for(j = 0; j <= i; j++) -+ dev->tempBuffer[j].maxLine = dev->tempBuffer[j].line; -+ } -+ ++ 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("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))); -+ ++ T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); ++ ++ /* ++ * If we got here then we have to allocate an unmanaged one ++ * This is not good. ++ */ ++ + dev->unmanagedTempAllocations++; -+ // Get an unmanaged one -+ return YMALLOC(dev->nBytesPerChunk); -+ -+ ++ return YMALLOC(dev->nDataBytesPerChunk); ++ +} + -+static void yaffs_ReleaseTempBuffer(yaffs_Device *dev, __u8 *buffer, int lineNo) ++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) -+ { ++ 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)); ++ ++ 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; + -+// Chunk bitmap manipulations ++ 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) ++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)); ++ 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)); ++ return dev->chunkBits + ++ (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); +} + -+static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device *dev,int blk) ++static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk) +{ -+ __u8 *blkBits = yaffs_BlockBits(dev,blk); ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); + -+ memset(blkBits,0,dev->chunkBitmapStride); ++ memset(blkBits, 0, dev->chunkBitmapStride); +} + -+static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device *dev,int blk,int chunk) ++static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device * dev, int blk, int chunk) +{ -+ __u8 *blkBits = yaffs_BlockBits(dev,blk); -+ -+ blkBits[chunk/8] &= ~ (1<<(chunk & 7)); ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ ++ blkBits[chunk / 8] &= ~(1 << (chunk & 7)); +} + -+static Y_INLINE void yaffs_SetChunkBit(yaffs_Device *dev,int blk,int chunk) ++static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk) +{ -+ __u8 *blkBits = yaffs_BlockBits(dev,blk); ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); + -+ blkBits[chunk/8] |= (1<<(chunk & 7)); ++ blkBits[chunk / 8] |= (1 << (chunk & 7)); +} + -+static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device *dev,int blk,int chunk) ++static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk) +{ -+ __u8 *blkBits = yaffs_BlockBits(dev,blk); -+ return (blkBits[chunk/8] & (1<<(chunk & 7))) ? 1 :0; ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); ++ return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; +} + -+static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device *dev,int blk) ++static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk) +{ -+ __u8 *blkBits = yaffs_BlockBits(dev,blk); ++ __u8 *blkBits = yaffs_BlockBits(dev, blk); + int i; -+ for(i = 0; i < dev->chunkBitmapStride; i++) -+ { -+ if(*blkBits) return 1; ++ for (i = 0; i < dev->chunkBitmapStride; i++) { ++ if (*blkBits) ++ return 1; + blkBits++; + } + return 0; +} + -+ -+static Y_INLINE int yaffs_HashFunction(int n) ++/* ++ * 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); +} + -+ -+yaffs_Object *yaffs_Root(yaffs_Device *dev) ++/* ++ * Access functions to useful fake objects ++ */ ++ ++yaffs_Object *yaffs_Root(yaffs_Device * dev) +{ + return dev->rootDir; +} + -+yaffs_Object *yaffs_LostNFound(yaffs_Device *dev) ++yaffs_Object *yaffs_LostNFound(yaffs_Device * dev) +{ + return dev->lostNFoundDir; +} + + -+ -+ -+int yaffs_CheckFF(__u8 *buffer,int nBytes) ++/* ++ * Erased NAND checking functions ++ */ ++ ++int yaffs_CheckFF(__u8 * buffer, int nBytes) +{ -+ //Horrible, slow implementation -+ while(nBytes--) -+ { -+ if(*buffer != 0xFF) return 0; ++ /* Horrible, slow implementation */ ++ while (nBytes--) { ++ if (*buffer != 0xFF) ++ return 0; + buffer++; + } + return 1; +} + -+static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,int chunkInNAND) ++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev, ++ int chunkInNAND) +{ + + int retval = YAFFS_OK; -+ __u8 *data = yaffs_GetTempBuffer(dev,__LINE__); ++ __u8 *data = yaffs_GetTempBuffer(dev, __LINE__); + yaffs_ExtendedTags tags; ++ int result; + -+// NCB dev->readChunkWithTagsFromNAND(dev,chunkInNAND,data,&tags); -+ yaffs_ReadChunkWithTagsFromNAND(dev,chunkInNAND,data,&tags); ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags); + -+ if(!yaffs_CheckFF(data,dev->nBytesPerChunk) || tags.chunkUsed) -+ { -+ T(YAFFS_TRACE_NANDACCESS,(TSTR("Chunk %d not erased" TENDSTR),chunkInNAND)); ++ 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; -+ -+} ++ yaffs_ReleaseTempBuffer(dev, data, __LINE__); + ++ return retval; + ++} + -+#if 1 -+static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, const __u8 *data, yaffs_ExtendedTags *tags,int useReserve) ++static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev, ++ const __u8 * data, ++ yaffs_ExtendedTags * tags, ++ int useReserve) +{ + int chunk; -+ -+ int writeOk = 1; -+ int attempts = 0; -+ + ++ int writeOk = 0; ++ int erasedOk = 1; ++ int attempts = 0; ++ yaffs_BlockInfo *bi; + -+ do{ -+ chunk = yaffs_AllocateChunk(dev,useReserve); -+ -+ if(chunk >= 0) -+ { -+ -+ // First check this chunk is erased... -+#ifndef CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK -+ writeOk = yaffs_CheckChunkErased(dev,chunk); -+#endif -+ if(!writeOk) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>> yaffs chunk %d was not erased" TENDSTR),chunk)); -+ } -+ else -+ { -+ writeOk = yaffs_WriteChunkWithTagsToNAND(dev,chunk,data,tags); -+ } -+ attempts++; ++ yaffs_InvalidateCheckpoint(dev); ++ ++ do { ++ chunk = yaffs_AllocateChunk(dev, useReserve,&bi); ++ ++ if (chunk >= 0) { ++ /* 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__); ++ } else { ++#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED ++ ++ bi->skipErasedCheck = 0; ++ ++#endif ++ if(!bi->skipErasedCheck){ ++ erasedOk = yaffs_CheckChunkErased(dev, chunk); ++ if(erasedOk && !bi->gcPrioritise) ++ bi->skipErasedCheck = 1; ++ } + -+ if(writeOk) -+ { -+ // Copy the data into the robustification buffer. -+ // NB We do this at the end to prevent duplicates in the case of a write error. -+ //Todo -+ yaffs_HandleWriteChunkOk(dev,chunk,data,tags); -+ } -+ else -+ { -+ yaffs_HandleWriteChunkError(dev,chunk); ++ if (!erasedOk) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>> yaffs chunk %d was not erased" ++ TENDSTR), chunk)); ++ } else { ++ writeOk = ++ yaffs_WriteChunkWithTagsToNAND(dev, chunk, ++ data, tags); ++ } ++ ++ attempts++; ++ ++ if (writeOk) { ++ /* ++ * Copy the data into the robustification buffer. ++ * NB We do this at the end to prevent duplicates in the case of a write error. ++ * Todo ++ */ ++ yaffs_HandleWriteChunkOk(dev, chunk, data, tags); ++ ++ } else { ++ /* The erased check or write failed */ ++ yaffs_HandleWriteChunkError(dev, chunk, erasedOk); ++ } + } + } -+ -+ } while(chunk >= 0 && ! writeOk); -+ -+ if(attempts > 1) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>> yaffs write required %d attempts" TENDSTR),attempts)); -+ dev->nRetriedWrites+= (attempts - 1); ++ ++ } while (chunk >= 0 && !writeOk); ++ ++ if (attempts > 1) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("**>> yaffs write required %d attempts" TENDSTR), ++ attempts)); ++ dev->nRetriedWrites += (attempts - 1); + } -+ + -+ + return chunk; +} -+#endif + -+ -+/// -+// Functions for robustisizing -+// -+// -+ -+static void yaffs_RetireBlock(yaffs_Device *dev,int blockInNAND) ++/* ++ * 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); -+ -+ yaffs_GetBlockInfo(dev,blockInNAND)->blockState = YAFFS_BLOCK_STATE_DEAD; ++ yaffs_MarkBlockBad(dev, blockInNAND); ++ ++ bi->blockState = YAFFS_BLOCK_STATE_DEAD; ++ bi->gcPrioritise = 0; ++ bi->needsRetiring = 0; + + dev->nRetiredBlocks++; +} + -+ -+#if 0 -+static int yaffs_RewriteBufferedBlock(yaffs_Device *dev) ++/* ++ * Functions for robustisizing TODO ++ * ++ */ ++ ++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * tags) +{ -+ dev->doingBufferedBlockRewrite = 1; -+ // -+ // Remove erased chunks -+ // Rewrite existing chunks to a new block -+ // Set current write block to the new block -+ -+ dev->doingBufferedBlockRewrite = 0; -+ -+ return 1; +} + -+ -+static void yaffs_HandleReadDataError(yaffs_Device *dev,int chunkInNAND) ++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, ++ const yaffs_ExtendedTags * tags) +{ -+ 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 +} + -+ -+static void yaffs_CheckWrittenBlock(yaffs_Device *dev,int chunkInNAND) ++void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi) +{ -+} -+ -+#endif ++ 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_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) ++static void yaffs_ReportOddballBlocks(yaffs_Device *dev) +{ ++ int i; ++ ++ for(i = dev->internalStartBlock; i <= dev->internalEndBlock && (yaffs_traceMask & YAFFS_TRACE_BAD_BLOCKS); i++){ ++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i); ++ if(bi->needsRetiring || bi->gcPrioritise) ++ T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("yaffs block %d%s%s" TENDSTR), ++ i, ++ bi->needsRetiring ? " needs retiring" : "", ++ bi->gcPrioritise ? " gc prioritised" : "")); ++ ++ } +} + -+static void yaffs_HandleWriteChunkError(yaffs_Device *dev,int chunkInNAND) ++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk) +{ -+ 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__); -+} + ++ 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)); + -+#if 0 -+static int yaffs_VerifyCompare(const __u8 *d0, const __u8 * d1, const yaffs_Spare *s0, const yaffs_Spare *s1,int dataSize) -+{ -+ -+ -+ if( memcmp(d0,d1,dataSize) != 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; ++ /* Delete the chunk */ ++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); +} -+#endif -+ + -+///////////////////////// Object management ////////////////// -+// List of spare objects -+// The list is hooked together using the first pointer -+// in the object + -+// static yaffs_Object *yaffs_freeObjects = NULL; ++/*---------------- Name handling functions ------------*/ + -+// static int yaffs_nFreeObjects; -+ -+// static yaffs_ObjectList *yaffs_allocatedObjectList = NULL; -+ -+// static yaffs_ObjectBucket yaffs_objectBucket[YAFFS_NOBJECT_BUCKETS]; -+ -+ -+static __u16 yaffs_CalcNameSum(const YCHAR *name) ++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)) -+ { ++ ++ YUCHAR *bname = (YUCHAR *) name; ++ if (bname) { ++ while ((*bname) && (i <= YAFFS_MAX_NAME_LENGTH)) { + +#ifdef CONFIG_YAFFS_CASE_INSENSITIVE + sum += yaffs_toupper(*bname) * i; @@ -3000,149 +4007,158 @@ index 0000000..bf13f91 + return sum; +} + -+static void yaffs_SetObjectName(yaffs_Object *obj, const YCHAR *name) ++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'); -+ } ++ 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); ++ obj->sum = yaffs_CalcNameSum(name); +} + -+#if 0 -+void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) -+{ -+ yaffs_ECCCalculate(data , spare->ecc1); -+ yaffs_ECCCalculate(&data[256] , spare->ecc2); -+} -+#endif -+ ++/*-------------------- TNODES ------------------- + -+///////////////////////// TNODES /////////////////////// -+ -+// List of spare tnodes -+// The list is hooked together using the first pointer -+// in the tnode. -+ -+//static yaffs_Tnode *yaffs_freeTnodes = NULL; -+ -+// static int yaffs_nFreeTnodes; -+ -+//static yaffs_TnodeList *yaffs_allocatedTnodeList = NULL; ++ * 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 */ + -+// yaffs_CreateTnodes creates a bunch more tnodes and -+// adds them to the tnode free list. -+// Don't use this function directly ++ newTnodes = YMALLOC(nTnodes * tnodeSize); ++ mem = (__u8 *)newTnodes; + -+static int yaffs_CreateTnodes(yaffs_Device *dev,int nTnodes) -+{ -+ int i; -+ yaffs_Tnode *newTnodes; -+ yaffs_TnodeList *tnl; -+ -+ if(nTnodes < 1) return YAFFS_OK; -+ -+ // make these things -+ -+ newTnodes = YMALLOC(nTnodes * sizeof(yaffs_Tnode)); -+ -+ if (!newTnodes) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("yaffs: Could not allocate Tnodes"TENDSTR))); ++ if (!newTnodes) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); + return YAFFS_FAIL; -+ } -+ -+ // Hook them into the free list -+ for(i = 0; i < nTnodes - 1; i++) -+ { -+ newTnodes[i].internal[0] = &newTnodes[i+1]; ++ } ++ ++ /* 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; ++ 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; ++ newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1; +#endif + dev->freeTnodes = newTnodes; -+ dev->nFreeTnodes+= nTnodes; ++#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. ++ /* 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))); -+ -+ } -+ else -+ { ++ if (!tnl) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("yaffs: Could not add tnodes to management list" TENDSTR))); ++ ++ } else { + tnl->tnodes = newTnodes; + tnl->next = dev->allocatedTnodeList; + dev->allocatedTnodeList = tnl; + } + -+ -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("yaffs: Tnodes added" TENDSTR))); -+ ++ 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 */ + -+// GetTnode gets us a clean tnode. Tries to make allocate more if we run out -+static yaffs_Tnode *yaffs_GetTnode(yaffs_Device *dev) ++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 there are none left make more */ ++ if (!dev->freeTnodes) { ++ yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); + } -+ -+ if(dev->freeTnodes) -+ { ++ ++ 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))); ++ 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--; -+ // zero out -+ memset(tn,0,sizeof(yaffs_Tnode)); + } -+ + + 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) ++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))); ++ 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 @@ -3152,27 +4168,25 @@ index 0000000..bf13f91 + } +} + -+ -+static void yaffs_DeinitialiseTnodes(yaffs_Device*dev) ++static void yaffs_DeinitialiseTnodes(yaffs_Device * dev) +{ -+ // Free the list of allocated tnodes ++ /* Free the list of allocated tnodes */ + yaffs_TnodeList *tmp; -+ -+ while(dev->allocatedTnodeList) -+ { -+ tmp = dev->allocatedTnodeList->next; ++ ++ while (dev->allocatedTnodeList) { ++ tmp = dev->allocatedTnodeList->next; + + YFREE(dev->allocatedTnodeList->tnodes); + YFREE(dev->allocatedTnodeList); -+ dev->allocatedTnodeList = tmp; -+ ++ dev->allocatedTnodeList = tmp; ++ + } -+ ++ + dev->freeTnodes = NULL; + dev->nFreeTnodes = 0; +} + -+static void yaffs_InitialiseTnodes(yaffs_Device*dev) ++static void yaffs_InitialiseTnodes(yaffs_Device * dev) +{ + dev->allocatedTnodeList = NULL; + dev->freeTnodes = NULL; @@ -3181,220 +4195,244 @@ index 0000000..bf13f91 + +} + -+#if 0 -+void yaffs_TnodeTest(yaffs_Device *dev) -+{ + -+ int i; -+ int j; -+ yaffs_Tnode *tn[1000]; -+ -+ YINFO("Testing TNodes"); -+ -+ for(j = 0; j < 50; j++) -+ { -+ for(i = 0; i < 1000; i++) -+ { -+ tn[i] = yaffs_GetTnode(dev); -+ if(!tn[i]) -+ { -+ YALERT("Getting tnode failed"); -+ } -+ } -+ for(i = 0; i < 1000; i+=3) -+ { -+ yaffs_FreeTnode(dev,tn[i]); -+ tn[i] = NULL; -+ } -+ -+ } ++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)); ++ } ++} ++ ++__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; +} -+#endif -+ -+ -+////////////////// END OF 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. ++/* ------------------- 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. -+// Used when reading..... -+static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device *dev,yaffs_FileStructure *fStruct, __u32 chunkId) ++/* 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 requiredTallness; + int level = fStruct->topLevel; -+ -+ // Check sane level and chunk Id -+ if(level < 0 || level > YAFFS_TNODES_MAX_LEVEL) -+ { -+// char str[50]; -+// sprintf(str,"Bad level %d",level); -+// YALERT(str); ++ ++ /* Check sane level and chunk Id */ ++ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) { + return NULL; + } -+ -+ if(chunkId > YAFFS_MAX_CHUNK_ID) -+ { -+// char str[50]; -+// sprintf(str,"Bad chunkId %d",chunkId); -+// YALERT(str); ++ ++ if (chunkId > YAFFS_MAX_CHUNK_ID) { + return NULL; + } + -+ // First check we're tall enough (ie enough topLevel) -+ -+ i = chunkId >> (/*dev->chunkGroupBits + */YAFFS_TNODES_LEVEL0_BITS); ++ /* First check we're tall enough (ie enough topLevel) */ ++ ++ i = chunkId >> YAFFS_TNODES_LEVEL0_BITS; + requiredTallness = 0; -+ while(i) -+ { ++ while (i) { + i >>= YAFFS_TNODES_INTERNAL_BITS; + requiredTallness++; + } -+ -+ -+ if(requiredTallness > fStruct->topLevel) -+ { -+ // Not tall enough, so we can't find it, return NULL. ++ ++ 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 >>(/* dev->chunkGroupBits + */ YAFFS_TNODES_LEVEL0_BITS + (level-1) * YAFFS_TNODES_INTERNAL_BITS)) & -+ YAFFS_TNODES_INTERNAL_MASK]; ++ ++ /* 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; ++ ++ 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. -+// -+static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device *dev, yaffs_FileStructure *fStruct, __u32 chunkId) ++/* 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) +{ -+ -+ yaffs_Tnode *tn; -+ ++ + int requiredTallness; + int i; + int l; -+ ++ yaffs_Tnode *tn; ++ + __u32 x; -+ -+ -+ //T((TSTR("AddOrFind topLevel=%d, chunk=%d"),fStruct->topLevel,chunkId)); -+ -+ // Check sane level and page Id -+ if(fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) -+ { -+// char str[50]; -+// sprintf(str,"Bad level %d",fStruct->topLevel); -+// YALERT(str); ++ ++ ++ /* Check sane level and page Id */ ++ if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) { + return NULL; + } -+ -+ if(chunkId > YAFFS_MAX_CHUNK_ID) -+ { -+// char str[50]; -+// sprintf(str,"Bad chunkId %d",chunkId); -+// YALERT(str); ++ ++ if (chunkId > YAFFS_MAX_CHUNK_ID) { + return NULL; + } -+ -+ // First check we're tall enough (ie enough topLevel) -+ -+ x = chunkId >> (/*dev->chunkGroupBits + */YAFFS_TNODES_LEVEL0_BITS); ++ ++ /* First check we're tall enough (ie enough topLevel) */ ++ ++ x = chunkId >> YAFFS_TNODES_LEVEL0_BITS; + requiredTallness = 0; -+ while(x) -+ { ++ while (x) { + x >>= YAFFS_TNODES_INTERNAL_BITS; + requiredTallness++; + } -+ -+ //T((TSTR(" required=%d"),requiredTallness)); -+ -+ -+ if(requiredTallness > fStruct->topLevel) -+ { -+ // Not tall enough,gotta make the tree taller -+ for(i = fStruct->topLevel; i < requiredTallness; i++) -+ { -+ //T((TSTR(" add new top"))); -+ ++ ++ ++ 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) -+ { ++ ++ if (tn) { + tn->internal[0] = fStruct->top; + fStruct->top = tn; -+ } -+ else -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("yaffs: no more tnodes" TENDSTR))); ++ } else { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("yaffs: no more tnodes" TENDSTR))); + } + } -+ ++ + fStruct->topLevel = requiredTallness; + } -+ -+ -+ // Traverse down to level 0, adding anything we need -+ ++ ++ /* Traverse down to level 0, adding anything we need */ ++ + l = fStruct->topLevel; + tn = fStruct->top; -+ while (l > 0 && tn) -+ { -+ x = (chunkId >> (/*dev->chunkGroupBits + */YAFFS_TNODES_LEVEL0_BITS + (l-1) * YAFFS_TNODES_INTERNAL_BITS)) & -+ YAFFS_TNODES_INTERNAL_MASK; -+ -+ //T((TSTR(" [%d:%d]"),l,i)); -+ -+ if(!tn->internal[x]) -+ { -+ //T((TSTR(" added"))); -+ -+ tn->internal[x] = yaffs_GetTnode(dev); -+ } -+ -+ tn = tn->internal[x]; -+ l--; + ++ 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); ++ } + } -+ -+ //TSTR(TENDSTR))); -+ -+ return tn; -+} + ++ return tn; ++} + -+static int yaffs_FindChunkInGroup(yaffs_Device *dev, int theChunk, yaffs_ExtendedTags *tags, int objectId, int chunkInInode) ++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; ++ ++ 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++; @@ -3402,11 +4440,15 @@ index 0000000..bf13f91 + 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) ++/* 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; @@ -3416,633 +4458,584 @@ index 0000000..bf13f91 + 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) -+ { ++ ++ 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); + } -+ 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; ++ if (allDone) { ++ yaffs_FreeTnode(dev, ++ tn-> ++ internal[i]); ++ tn->internal[i] = NULL; + } -+ } -+ ++ } ++ + } + return (allDone) ? 1 : 0; -+ } -+ else if(level == 0) -+ { ++ } else if (level == 0) { + int hitLimit = 0; -+ -+ for(i = YAFFS_NTNODES_LEVEL0 -1; i >= 0 && !hitLimit; i--) -+ { -+ if(tn->level0[i]) -+ { -+ -+ chunkInInode = (chunkOffset << YAFFS_TNODES_LEVEL0_BITS ) + i; -+ -+ theChunk = tn->level0[i] << dev->chunkGroupBits; -+ -+ foundChunk = yaffs_FindChunkInGroup(dev,theChunk,&tags,in->objectId,chunkInInode); -+ -+ if(foundChunk > 0) -+ { -+ yaffs_DeleteChunk(dev,foundChunk,1,__LINE__); ++ ++ 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) -+ { ++ if (limit) { ++ *limit = *limit - 1; ++ if (*limit <= 0) { + hitLimit = 1; + } + } -+ ++ + } -+ -+ tn->level0[i] = 0; -+ } -+ ++ ++ yaffs_PutLevel0Tnode(dev,tn,i,0); ++ } ++ + } + return (i < 0) ? 1 : 0; + -+ + } -+ ++ + } -+ ++ + return 1; -+ -+} + ++} + -+static void yaffs_SoftDeleteChunk(yaffs_Device *dev, int chunk) ++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) -+ { ++ 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) ++/* 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; ++ ++ 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? */ + } -+ else -+ { -+ //Hoosterman... how could this happen. -+ } -+ } ++ } + } + return (allDone) ? 1 : 0; -+ } -+ else if(level == 0) -+ { -+ -+ for(i = YAFFS_NTNODES_LEVEL0 -1; i >=0; i--) -+ { -+ if(tn->level0[i]) -+ { -+ // Note this does not find the real chunk, only the chunk group. -+ // We make an assumption that a chunk group is niot larger than a block. -+ theChunk = (tn->level0[i] << dev->chunkGroupBits); -+ -+ yaffs_SoftDeleteChunk(dev,theChunk); -+ tn->level0[i] = 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; -+ -+} + ++ return 1; + ++} + -+static void yaffs_SoftDeleteFile(yaffs_Object *obj) ++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); ++ 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. ++ */ + -+ -+ -+ -+// 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. -+ -+// yaffs_PruneWorker should only be called by yaffs_PruneFileStructure() -+ -+static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device *dev, yaffs_Tnode *tn, __u32 level, int del0) ++static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device * dev, yaffs_Tnode * tn, ++ __u32 level, int del0) +{ + int i; + int hasData; -+ -+ if(tn) -+ { ++ ++ 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++; ++ ++ 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); ++ ++ 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) ++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) -+ { ++ ++ 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++; ++ for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) { ++ if (tn->internal[i]) { ++ hasData++; + } + } -+ -+ if(!hasData) -+ { ++ ++ if (!hasData) { + fStruct->top = tn->internal[0]; + fStruct->topLevel--; -+ yaffs_FreeTnode(dev,tn); -+ } -+ else -+ { ++ 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)); + -+/////////////////////// 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)); -+ -+ if (!newObjects) -+ { -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("yaffs: Could not allocate more objects" TENDSTR))); ++ if (!newObjects) { ++ 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]); -+ } -+ ++ } ++ ++ /* 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. -+ ++ dev->nFreeObjects += nObjects; ++ dev->nObjectsCreated += nObjects; ++ ++ /* Now add this bunch of Objects to a list for freeing up. */ ++ + list = YMALLOC(sizeof(yaffs_ObjectList)); -+ if(!list) -+ { -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("Could not add objects to management list" TENDSTR))); -+ } -+ else -+ { ++ if (!list) { ++ T(YAFFS_TRACE_ALLOCATE, ++ (TSTR("Could not add objects to management list" TENDSTR))); ++ } else { + 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) ++/* 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 there are none left make more */ ++ if (!dev->freeObjects) { ++ yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); + } -+ -+ if(dev->freeObjects) -+ { ++ ++ if (dev->freeObjects) { + tn = dev->freeObjects; -+ dev->freeObjects = (yaffs_Object *)(dev->freeObjects->siblings.next); ++ dev->freeObjects = ++ (yaffs_Object *) (dev->freeObjects->siblings.next); + dev->nFreeObjects--; -+ -+ // Now sweeten it up... -+ -+ memset(tn,0,sizeof(yaffs_Object)); ++ ++ /* 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); ++ ++ /* 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) ++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 ++ 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. ++ obj->chunkId = 0; /* Not a valid chunk. */ + } -+ ++ + return obj; -+ -+} + ++} + -+static void yaffs_UnhashObject(yaffs_Object *tn) ++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)) -+ { ++ ++ /* 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); ++ 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) ++/* 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 ++ 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. ++ ++ /* 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) ++void yaffs_HandleDeferedFree(yaffs_Object * obj) +{ -+ if(obj->deferedFree) -+ { -+ yaffs_FreeObject(obj); ++ if (obj->deferedFree) { ++ yaffs_FreeObject(obj); + } +} + +#endif + -+ -+ -+static void yaffs_DeinitialiseObjects(yaffs_Device *dev) ++static void yaffs_DeinitialiseObjects(yaffs_Device * dev) +{ -+ // Free the list of allocated Objects -+ ++ /* Free the list of allocated Objects */ ++ + yaffs_ObjectList *tmp; -+ -+ while( dev->allocatedObjectList) -+ { -+ tmp = dev->allocatedObjectList->next; ++ ++ while (dev->allocatedObjectList) { ++ tmp = dev->allocatedObjectList->next; + YFREE(dev->allocatedObjectList->objects); + YFREE(dev->allocatedObjectList); -+ -+ dev->allocatedObjectList = tmp; ++ ++ dev->allocatedObjectList = tmp; + } -+ ++ + dev->freeObjects = NULL; + dev->nFreeObjects = 0; +} + -+static void yaffs_InitialiseObjects(yaffs_Device *dev) ++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++) -+ { ++ ++ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + INIT_LIST_HEAD(&dev->objectBucket[i].list); -+ dev->objectBucket[i].count = 0; ++ dev->objectBucket[i].count = 0; + } + +} + -+ -+ -+ -+ -+ -+static int yaffs_FindNiceObjectBucket(yaffs_Device *dev) ++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++) -+ { ++ /* 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) -+ { ++ 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++) -+ { ++ ++ /* 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) -+ { ++ 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) ++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. -+ ++ ++ /* 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) -+ { ++ __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) -+ { ++ 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; + } + } + } + } -+ -+ //T(("bucket %d count %d inode %d\n",bucket,yaffs_objectBucket[bucket].count,n); -+ -+ return n; ++ ++ ++ return n; +} + -+static void yaffs_HashObject(yaffs_Object *in) ++static void yaffs_HashObject(yaffs_Object * in) +{ + int bucket = yaffs_HashFunction(in->objectId); + yaffs_Device *dev = in->myDev; -+ -+ if(!list_empty(&in->hashLink)) -+ { -+ //YINFO("!!!"); -+ } + -+ -+ list_add(&in->hashLink,&dev->objectBucket[bucket].list); ++ list_add(&in->hashLink, &dev->objectBucket[bucket].list); + dev->objectBucket[bucket].count++; + +} + -+yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev,__u32 number) ++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) -+ { ++ ++ 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; ++ /* 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 *yaffs_CreateNewObject(yaffs_Device * dev, int number, ++ yaffs_ObjectType type) +{ -+ ++ + yaffs_Object *theObject; + -+ if(number < 0) -+ { ++ if (number < 0) { + number = yaffs_CreateNewObjectNumber(dev); + } -+ ++ + theObject = yaffs_AllocateEmptyObject(dev); -+ -+ if(theObject) -+ { ++ ++ if (theObject) { + theObject->fake = 0; + theObject->renameAllowed = 1; + theObject->unlinkAllowed = 1; @@ -4051,779 +5044,721 @@ index 0000000..bf13f91 + 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]; ++ 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 = yaffs_GetTnode(dev); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ INIT_LIST_HEAD(&theObject->variant.directoryVariant.children); -+ break; -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ // No action required -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: -+ // No action required -+ break; -+ case YAFFS_OBJECT_TYPE_SPECIAL: -+ // No action required -+ break; -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ // todo this should not happen -+ break; ++ 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 = ++ yaffs_GetTnode(dev); ++ 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) ++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 (number > 0) { ++ theObject = yaffs_FindObjectByNumber(dev, number); + } -+ -+ if(!theObject) -+ { -+ theObject = yaffs_CreateNewObject(dev,number,type); ++ ++ if (!theObject) { ++ theObject = yaffs_CreateNewObject(dev, number, type); + } -+ ++ + return theObject; + +} ++ + -+static YCHAR *yaffs_CloneString(const YCHAR *str) ++static YCHAR *yaffs_CloneString(const YCHAR * str) +{ + YCHAR *newStr = NULL; -+ -+ if(str && *str) -+ { ++ ++ if (str && *str) { + newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR)); -+ yaffs_strcpy(newStr,str); ++ 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) ++/* ++ * 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; + + 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)) -+ { ++ ++ /* 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(in) -+ { ++ ++ in = yaffs_CreateNewObject(dev, -1, type); ++ ++ if (in) { + in->chunkId = -1; + in->valid = 1; + in->variantType = type; + -+ in->yst_mode = mode; -+ ++ 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->yst_rdev = rdev; ++ in->yst_uid = uid; ++ in->yst_gid = gid; ++#endif + in->nDataChunks = 0; + -+ yaffs_SetObjectName(in,name); ++ yaffs_SetObjectName(in, name); + in->dirty = 1; -+ -+ yaffs_AddObjectToDirectory(parent,in); -+ ++ ++ yaffs_AddObjectToDirectory(parent, in); ++ + in->myDev = parent->myDev; -+ -+ -+ switch(type) -+ { -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ in->variant.symLinkVariant.alias = yaffs_CloneString(aliasString); -+ 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: // do nothing -+ case YAFFS_OBJECT_TYPE_DIRECTORY: // do nothing -+ case YAFFS_OBJECT_TYPE_SPECIAL: // do nothing -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ break; ++ ++ switch (type) { ++ case YAFFS_OBJECT_TYPE_SYMLINK: ++ in->variant.symLinkVariant.alias = ++ yaffs_CloneString(aliasString); ++ 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_GetNumberOfFreeChunks(dev) <= 0 || */ -+ yaffs_UpdateObjectHeader(in,name,0,0,0) < 0) -+ { -+ // Could not create the object header, fail the creation ++ 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) ++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); ++ 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) ++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); ++ 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) ++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); ++ 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) ++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); ++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, ++ uid, gid, NULL, alias, 0); +} + -+// NB yaffs_Link returns the object id of the equivalent object. -+yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, yaffs_Object *equivalentObject) ++/* 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 ++ /* 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)) -+ { ++ ++ if (yaffs_MknodObject ++ (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0, ++ equivalentObject, NULL, 0)) { + return equivalentObject; -+ } -+ else -+ { ++ } else { + return NULL; + } -+ -+} + ++} + -+static int yaffs_ChangeObjectName(yaffs_Object *obj, yaffs_Object *newDir, const YCHAR *newName,int force,int shadows) ++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 ++ 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))); ++ ++ 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) -+ { ++ ++ /* 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); ++ } 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. -+ // Otherwise 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); ++ ++ 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) -+ { ++ ++ 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) ++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) -+ { ++ /* 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); -+ -+ 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 have to fail -+ return YAFFS_FAIL; // EEXIST or ENOTEMPTY -+ } -+ else if(existingTarget) -+ { -+ // Nuke the target first, using shadowing -+ yaffs_ChangeObjectName(obj,newDir,newName,force,existingTarget->objectId); -+ yaffs_Unlink(newDir,newName); -+ } -+ -+ -+ return yaffs_ChangeObjectName(obj,newDir,newName,force,0); + } -+ return YAFFS_FAIL; -+} ++#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 0 ++ if (obj && obj->renameAllowed) { + -+static int yaffs_CheckObjectHashSanity(yaffs_Device *dev) -+{ -+ // Scan the buckets and check that the lists -+ // have as many members as the count says there are -+ int bucket; -+ int countEm; -+ struct list_head *j; -+ int ok = YAFFS_OK; -+ -+ for(bucket = 0; bucket < YAFFS_NOBJECT_BUCKETS; bucket++) -+ { -+ countEm = 0; -+ -+ list_for_each(j,&dev->objectBucket[bucket].list) -+ { -+ countEm++; -+ } -+ -+ if(countEm != dev->objectBucket[bucket].count) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("Inode hash inconsistency" TENDSTR))); -+ ok = YAFFS_FAIL; ++ /* 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 ok; ++ return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0); ++ } ++ return YAFFS_FAIL; +} + ++/*------------------------- Block Management and Page Allocation ----------------*/ + -+void yaffs_ObjectTest(yaffs_Device *dev) ++static int yaffs_InitialiseBlocks(yaffs_Device * dev) +{ -+ yaffs_Object *in[1000]; -+ int inNo[1000]; -+ yaffs_Object *inold[1000]; -+ int i; -+ int j; -+ -+ memset(in,0,1000*sizeof(yaffs_Object *)); -+ memset(inold,0,1000*sizeof(yaffs_Object *)); -+ -+ yaffs_CheckObjectHashSanity(dev); -+ -+ for(j = 0; j < 10; j++) -+ { -+ //T(("%d\n",j)); -+ -+ for(i = 0; i < 1000; i++) -+ { -+ in[i] = yaffs_CreateNewObject(dev,-1,YAFFS_OBJECT_TYPE_FILE); -+ if(!in[i]) -+ { -+ YINFO("No more inodes"); -+ } -+ else -+ { -+ inNo[i] = in[i]->objectId; -+ } -+ } -+ -+ for(i = 0; i < 1000; i++) -+ { -+ if(yaffs_FindObjectByNumber(dev,inNo[i]) != in[i]) -+ { -+ //T(("Differnce in look up test\n")); -+ } -+ else -+ { -+ // T(("Look up ok\n")); -+ } -+ } -+ -+ yaffs_CheckObjectHashSanity(dev); -+ -+ for(i = 0; i < 1000; i+=3) -+ { -+ yaffs_FreeObject(in[i]); -+ in[i] = NULL; -+ } -+ ++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; + -+ yaffs_CheckObjectHashSanity(dev); -+ } -+ -+} -+ -+#endif ++ dev->allocationBlock = -1; /* force it to get a new one */ + -+/////////////////////////// Block Management and Page Allocation /////////////////// -+ -+ -+static int yaffs_InitialiseBlocks(yaffs_Device *dev,int nBlocks) -+{ -+ dev->allocationBlock = -1; // force it to get a new one -+ //Todo we're assuming the malloc will pass. ++ /* Todo we're assuming the malloc will pass. */ + dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo)); -+ // Set up dynamic blockinfo stuff. -+ dev->chunkBitmapStride = (dev->nChunksPerBlock+7)/8; ++ if(!dev->blockInfo){ ++ dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo)); ++ dev->blockInfoAlt = 1; ++ } ++ else ++ dev->blockInfoAlt = 0; ++ ++ /* Set up dynamic blockinfo stuff. */ ++ dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */ + dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks); -+ if(dev->blockInfo && dev->chunkBits) -+ { -+ memset(dev->blockInfo,0,nBlocks * sizeof(yaffs_BlockInfo)); -+ memset(dev->chunkBits,0,dev->chunkBitmapStride * nBlocks); -+ return YAFFS_OK; ++ 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) ++static void yaffs_DeinitialiseBlocks(yaffs_Device * dev) +{ -+ YFREE(dev->blockInfo); ++ if(dev->blockInfoAlt) ++ YFREE_ALT(dev->blockInfo); ++ else ++ YFREE(dev->blockInfo); ++ dev->blockInfoAlt = 0; ++ + dev->blockInfo = NULL; -+ YFREE(dev->chunkBits); ++ ++ if(dev->chunkBitsAlt) ++ YFREE_ALT(dev->chunkBits); ++ else ++ YFREE(dev->chunkBits); ++ dev->chunkBitsAlt = 0; + dev->chunkBits = NULL; +} + -+ -+static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device *dev, yaffs_BlockInfo *bi) ++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 + ++ if (!dev->isYaffs2) ++ return 1; /* disqualification only applies to yaffs2. */ + -+ // 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) -+ { ++ 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; ++ 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. ++ /* 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); -+ -+ -+ return 1; + +} + -+// FindDiretiestBlock is used to select the dirtiest block (or close enough) -+// for garbage collection. -+// -+ -+ ++/* FindDiretiestBlock is used to select the dirtiest block (or close enough) ++ * for garbage collection. ++ */ + -+static int yaffs_FindBlockForGarbageCollection(yaffs_Device *dev,int aggressive) ++static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev, ++ int aggressive) +{ + + int b = dev->currentDirtyChecker; -+ ++ + int i; + int iterations; + int dirtiest = -1; -+ int pagesInUse; ++ int pagesInUse; ++ int prioritised=0; + yaffs_BlockInfo *bi; -+ static int nonAggressiveSkip = 0; ++ static int nonAggressiveSkip = 0; ++ 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); ++ 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. -+ ++ /* 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. ++ */ + + nonAggressiveSkip--; + -+ if(!aggressive &&(nonAggressiveSkip > 0)) -+ { ++ if (!aggressive && (nonAggressiveSkip > 0)) { + return -1; + } + -+ pagesInUse = (aggressive)? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 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) -+ { ++ 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 ; i++) -+ { ++ ++ 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) { ++ b = dev->internalStartBlock; + } + -+ if(b < dev->internalStartBlock || b > dev->internalEndBlock) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>> Block %d is not valid" TENDSTR),b)); ++ 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(bi->blockState == YAFFS_BLOCK_STATE_FULL && -+ (bi->pagesInUse - bi->softDeletions )< pagesInUse && -+ yaffs_BlockNotDisqualifiedFromGC(dev,bi)) -+ { ++ ++ 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" TENDSTR),dirtiest,dev->nChunksPerBlock - pagesInUse)); ++ ++ 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; // clear this -+ -+ if(dirtiest > 0) -+ { ++ ++ dev->oldestDirtySequence = 0; ++ ++ if (dirtiest > 0) { + nonAggressiveSkip = 4; + } + + return dirtiest; +} + -+ -+static void yaffs_BlockBecameDirty(yaffs_Device *dev,int blockNo) ++static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo) +{ -+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,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. ++ ++ /* 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) -+ { -+ erasedOk = yaffs_EraseBlockInNAND(dev,blockNo); -+ if(!erasedOk) -+ { ++ 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)); ++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, ++ (TSTR("**>> Erasure failed %d" TENDSTR), blockNo)); + } + } + -+ if(erasedOk && (yaffs_traceMask & YAFFS_TRACE_ERASE)) -+ { -+ 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 && (yaffs_traceMask & YAFFS_TRACE_ERASE)) { ++ 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... ++ ++ if (erasedOk) { ++ /* Clean it up... */ + bi->blockState = YAFFS_BLOCK_STATE_EMPTY; + dev->nErasedBlocks++; + bi->pagesInUse = 0; + bi->softDeletions = 0; -+ bi->hasShrinkHeader=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)); -+ } -+} -+ -+#if 0 -+static void yaffs_DumpBlockStats(yaffs_Device *dev) -+{ -+ int i,j; -+ yaffs_BlockInfo *bi; -+ -+ for(i= dev->internalStartBlock; i <=dev->internalEndBlock; i++) -+ { -+ bi = yaffs_GetBlockInfo(dev,i); -+ T(YAFFS_TRACE_ALLOCATE,(TSTR("%3d state %d shrink %d inuse %d/%d seq %d pages"),i, -+ bi->blockState,bi->hasShrinkHeader,bi->pagesInUse,bi->softDeletions,bi->sequenceNumber)); -+ -+ for(j = 0; j < dev->nChunksPerBlock; j++) -+ { -+ if(yaffs_CheckChunkBit(dev,i,j)) -+ { -+ T(YAFFS_TRACE_ALLOCATE,(TSTR(" %d"),j)); ++ bi->hasShrinkHeader = 0; ++ bi->skipErasedCheck = 1; /* This is clean, so no need to check */ ++ bi->gcPrioritise = 0; ++ yaffs_ClearChunkBits(dev, blockNo); + -+ } -+ } -+ T(YAFFS_TRACE_ALLOCATE,(TSTR(" " TENDSTR))); ++ 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)); + } +} -+#endif -+ + -+static int yaffs_FindBlockForAllocation(yaffs_Device *dev) ++static int yaffs_FindBlockForAllocation(yaffs_Device * dev) +{ + int i; -+ ++ + yaffs_BlockInfo *bi; -+ -+#if 0 -+ static int j = 0; -+ j++; -+ if(j < 0 || j > 100) -+ { -+ j = 0; -+ yaffs_DumpBlockStats(dev); -+ } -+ -+#endif -+ -+ 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))); ++ ++ 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++) -+ { ++ /* Find an empty block. */ ++ ++ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { + dev->allocationBlockFinder++; -+ if(dev->allocationBlockFinder < dev->internalStartBlock || dev->allocationBlockFinder> dev->internalEndBlock) -+ { ++ 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 = 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)); ++ 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; -+} ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR ++ ("yaffs tragedy: no more eraased blocks, but there should have been %d" ++ TENDSTR), dev->nErasedBlocks)); + ++ return -1; ++} + -+// To determine if we have enough space we just look at the -+// number of erased blocks. + -+static int yaffs_CheckSpaceForAllocation(yaffs_Device *dev) ++// 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 = (dev->nReservedBlocks * dev->nChunksPerBlock); ++ 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) ++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 ++ ++ 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. ++ ++ 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))); ++ 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; ++ /* 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); ++ 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) -+ { ++ ++ /* 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))); ++ ++ T(YAFFS_TRACE_ERROR, ++ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); + -+ return -1; ++ return -1; +} + -+ -+ -+ -+static int yaffs_GetErasedChunks(yaffs_Device *dev) ++static int yaffs_GetErasedChunks(yaffs_Device * dev) +{ -+ int n; ++ int n; + -+ n = dev->nErasedBlocks * dev->nChunksPerBlock; ++ n = dev->nErasedBlocks * dev->nChunksPerBlock; + -+ if(dev->allocationBlock> 0) -+ { -+ n += (dev->nChunksPerBlock - dev->allocationPage); -+ } ++ if (dev->allocationBlock > 0) { ++ n += (dev->nChunksPerBlock - dev->allocationPage); ++ } + -+ return n; ++ return n; + +} + -+static int yaffs_GarbageCollectBlock(yaffs_Device *dev,int block) ++static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block) +{ + int oldChunk; + int newChunk; @@ -4832,536 +5767,355 @@ index 0000000..bf13f91 + int retVal = YAFFS_OK; + int cleanups = 0; + int i; ++ int isCheckpointBlock; + + int chunksBefore = yaffs_GetErasedChunks(dev); + int chunksAfter; + -+ yaffs_ExtendedTags tags; -+ -+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,block); -+ ++ 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)); -+ //T(("Collecting block %d n %d bits %x\n",block, bi->pagesInUse, bi->pageBits)); -+ -+ //yaffs_VerifyFreeChunks(dev); ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block, ++ bi->pagesInUse, bi->hasShrinkHeader)); + -+ bi->hasShrinkHeader = 0; // clear the flag so that the block can erase -+ -+ dev->nFreeChunks -= bi->softDeletions; // Take off the number of soft deleted entries because -+ // they're going to get really deleted during GC. ++ /*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(!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 -+ { ++ 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__); ++ __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); + -+ 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; -+ -+ //T(("copying page %x from %d to %d\n",mask,oldChunk,newChunk)); -+ -+ yaffs_InitialiseTags(&tags); -+ -+ yaffs_ReadChunkWithTagsFromNAND(dev,oldChunk,buffer, &tags); ++ for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock; ++ chunkInBlock < dev->nChunksPerBlock ++ && yaffs_StillSomeChunkBits(dev, block); ++ chunkInBlock++, oldChunk++) { ++ if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) { + -+ 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) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("page %d in gc has no object " TENDSTR),oldChunk)); -+ } -+ -+ 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. -+ -+ //yaffs_PutChunkIntoFile(object, tags.chunkId, 0,0); -+ 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++; ++ /* This page is in use and might need to be copied off */ + -+ 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. -+ -+ yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)buffer; -+ oh->isShrink = 0; -+ tags.extraIsShrinkHeader = 0; -+ } ++ markNAND = 1; + -+ newChunk = yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags,1); -+ -+ if(newChunk < 0) -+ { -+ retVal = YAFFS_FAIL; ++ 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) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("page %d in gc has no object " ++ TENDSTR), oldChunk)); + } -+ else -+ { -+ -+ // Ok, now fix up the Tnodes etc. -+ -+ if(tags.chunkId == 0) -+ { -+ // It's a header -+ object->chunkId = newChunk; -+ object->serial = tags.serialNumber; ++ ++ 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++; + } -+ else -+ { -+ // It's a data chunk -+ yaffs_PutChunkIntoFile(object, tags.chunkId, newChunk,0); ++ 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; ++ } ++ ++ 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_DeleteChunk(dev,oldChunk,markNAND,__LINE__); -+ + } -+ } + -+ yaffs_ReleaseTempBuffer(dev,buffer,__LINE__); ++ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + -+ //yaffs_VerifyFreeChunks(dev); + -+ // 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); ++ /* 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--; ++ } ++ + } + + } + ++ if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) { ++ T(YAFFS_TRACE_GC, ++ (TSTR ++ ("gc did not increase free chunks before %d after %d" ++ TENDSTR), chunksBefore, chunksAfter)); + } + -+ 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; -+ -+ //yaffs_VerifyFreeChunks(dev); -+ -+ return YAFFS_OK; -+} -+ -+#if 0 -+static yaffs_Object *yaffs_FindDeletedUnlinkedFile(yaffs_Device *dev) -+{ -+ // find a file to delete -+ struct list_head *i; -+ yaffs_Object *l; + -+ -+ //Scan the unlinked files looking for one to delete -+ list_for_each(i,&dev->unlinkedDir->variant.directoryVariant.children) -+ { -+ if(i) -+ { -+ l = list_entry(i, yaffs_Object,siblings); -+ if(l->deleted) -+ { -+ return l; -+ } -+ } -+ } -+ return NULL; -+} -+ -+ -+static void yaffs_DoUnlinkedFileDeletion(yaffs_Device *dev) -+{ -+ // This does background deletion on unlinked files.. only deleted ones. -+ // If we don't have a file we're working on then find one -+ if(!dev->unlinkedDeletion && dev->nDeletedFiles > 0) -+ { -+ dev->unlinkedDeletion = yaffs_FindDeletedUnlinkedFile(dev); -+ } -+ -+ // OK, we're working on a file... -+ if(dev->unlinkedDeletion) -+ { -+ yaffs_Object *obj = dev->unlinkedDeletion; -+ int delresult; -+ int limit; // Number of chunks to delete in a file. -+ // NB this can be exceeded, but not by much. -+ -+ limit = -1; -+ -+ delresult = yaffs_DeleteWorker(obj, obj->variant.fileVariant.top, obj->variant.fileVariant.topLevel, 0,&limit); -+ -+ if(obj->nDataChunks == 0) -+ { -+ // Done all the deleting of data chunks. -+ // Now dump the header and clean up -+ yaffs_FreeTnode(dev,obj->variant.fileVariant.top); -+ obj->variant.fileVariant.top = NULL; -+ yaffs_DoGenericObjectDeletion(obj); -+ dev->nDeletedFiles--; -+ dev->nUnlinkedFiles--; -+ dev->nBackgroundDeletions++; -+ dev->unlinkedDeletion = NULL; -+ } -+ } ++ return YAFFS_OK; +} + -+#endif -+ -+ -+ -+// 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 dirtier blocks. -+// Passive gc only inspects smaller areas and will only accept cleaner 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) ++/* 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 aggressive; + int gcOk = YAFFS_OK; + int maxTries = 0; + -+ //yaffs_VerifyFreeChunks(dev); -+ -+ if(dev->isDoingGC) -+ { -+ // Bail out so we don't get recursive gc ++ 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{ ++ /* This loop should pass the first time. ++ * We'll only see looping here if the erase of the collected block fails. ++ */ ++ ++ do { + maxTries++; -+ if(dev->nErasedBlocks < dev->nReservedBlocks) -+ { -+ // We need a block soon... ++ ++ checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint); ++ if(checkpointBlockAdjust < 0) ++ checkpointBlockAdjust = 0; ++ ++ if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust)) { ++ /* We need a block soon...*/ + aggressive = 1; -+ } -+ else -+ { -+ // We're in no hurry ++ } else { ++ /* We're in no hurry */ + aggressive = 0; + } -+ -+ block = yaffs_FindBlockForGarbageCollection(dev,aggressive); -+ -+ if(block > 0) -+ { ++ ++ block = yaffs_FindBlockForGarbageCollection(dev, aggressive); ++ ++ if (block > 0) { + dev->garbageCollections++; -+ if(!aggressive) -+ { ++ if (!aggressive) { + dev->passiveGarbageCollections++; + } + -+ T(YAFFS_TRACE_GC,(TSTR("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),dev->nErasedBlocks,aggressive)); ++ T(YAFFS_TRACE_GC, ++ (TSTR ++ ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR), ++ dev->nErasedBlocks, aggressive)); + -+ gcOk = yaffs_GarbageCollectBlock(dev,block); ++ 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)); ++ 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)); ++ } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0) ++ && (maxTries < 2)); + -+ return aggressive ? gcOk: YAFFS_OK; ++ return aggressive ? gcOk : YAFFS_OK; +} + ++/*------------------------- TAGS --------------------------------*/ + -+//////////////////////////// TAGS /////////////////////////////////////// ++static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId, ++ int chunkInObject) ++{ ++ return (tags->chunkId == chunkInObject && ++ tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0; + ++} + + -+#if 0 ++/*-------------------- Data file manipulation -----------------*/ + -+void yaffs_CalcTagsECC(yaffs_Tags *tags) ++static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode, ++ yaffs_ExtendedTags * 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; -+ -+ -+} ++ /*Get the Tnode, then get the level 0 offset chunk offset */ ++ yaffs_Tnode *tn; ++ int theChunk = -1; ++ yaffs_ExtendedTags localTags; ++ int retVal = -1; + -+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; ++ yaffs_Device *dev = in->myDev; + -+ 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 ++ if (!tags) { ++ /* Passed a NULL, so use our own tags space */ ++ tags = &localTags; + } -+ -+ return 0; -+} + -+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]; -+} ++ tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); + -+static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,yaffs_Tags *tagsPtr) -+{ -+ yaffs_TagsUnion *tu = (yaffs_TagsUnion *)tagsPtr; -+ int result; ++ if (tn) { ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode); + -+ 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++; ++ retVal = ++ yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, ++ chunkInInode); + } ++ return retVal; +} + -+static void yaffs_SpareInitialise(yaffs_Spare *spare) ++static int yaffs_FindAndDeleteChunkInFile(yaffs_Object * in, int chunkInInode, ++ yaffs_ExtendedTags * tags) +{ -+ memset(spare,0xFF,sizeof(yaffs_Spare)); -+} ++ /* Get the Tnode, then get the level 0 offset chunk offset */ ++ yaffs_Tnode *tn; ++ int theChunk = -1; ++ yaffs_ExtendedTags localTags; + -+#endif ++ yaffs_Device *dev = in->myDev; ++ int retVal = -1; + -+#if 0 -+static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device *dev, const __u8 *buffer, yaffs_ExtendedTags *tags, int useReserve) -+{ -+ // NB There must be tags, data is optional -+ // If there is data, then an ECC is calculated on it. -+ -+ yaffs_Spare spare; -+ -+ if(!tags) -+ { -+ return YAFFS_FAIL; ++ if (!tags) { ++ /* Passed a NULL, so use our own tags space */ ++ tags = &localTags; + } -+ -+ //yaffs_SpareInitialise(&spare); -+ -+ //if(!dev->useNANDECC && buffer) -+ //{ -+ // yaffs_CalcECC(buffer,&spare); -+ //} -+ -+ //yaffs_LoadTagsIntoSpare(&spare,tags); -+ -+ return yaffs_WriteNewChunkToNAND(dev,buffer,&spare,useReserve); -+ -+} -+#endif + -+static int yaffs_TagsMatch(const yaffs_ExtendedTags *tags, int objectId, int chunkInObject) -+{ -+ return ( tags->chunkId == chunkInObject && -+ tags->objectId == objectId && -+ !tags->chunkDeleted) ? 1 : 0; -+ -+} ++ tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode); + -+///////////////////////////////////////////////////////////////////////////////////////////////////////// ++ if (tn) { + ++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode); + -+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 = tn->level0[chunkInInode & YAFFS_TNODES_LEVEL0_MASK] << dev->chunkGroupBits; -+ -+ 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; ++ retVal = ++ yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId, ++ chunkInInode); + -+ 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 = tn->level0[chunkInInode & YAFFS_TNODES_LEVEL0_MASK] << dev->chunkGroupBits; -+ -+ retVal = yaffs_FindChunkInGroup(dev,theChunk,tags,in->objectId,chunkInInode); -+ -+ // Delete the entry in the filestructure (if found) -+ if(retVal != -1) -+ { -+ tn->level0[chunkInInode & YAFFS_TNODES_LEVEL0_MASK] = 0; ++ /* 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; -+} ++ } 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) ++static int yaffs_CheckFileSanity(yaffs_Object * in) +{ + int chunk; + int nChunks; @@ -5369,376 +6123,347 @@ index 0000000..bf13f91 + 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")); ++ 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->nBytesPerChunk -1)/in->myDev->nBytesPerChunk; -+ -+ for(chunk = 1; chunk <= nChunks; chunk++) -+ { -+ tn = yaffs_FindLevel0Tnode(in->myDev,&in->variant.fileVariant, chunk); -+ -+ if(tn) -+ { -+ -+ theChunk = tn->level0[chunk & YAFFS_TNODES_LEVEL0_MASK] << in->myDev->chunkGroupBits; -+ -+ if(yaffs_CheckChunkBits(dev,theChunk/dev->nChunksPerBlock,theChunk%dev->nChunksPerBlock)) -+ { ++ 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; */ + -+ yaffs_ReadChunkTagsFromNAND(in->myDev,theChunk,tags,&chunkDeleted); -+ if(yaffs_TagsMatch(tags,in->objectId,chunk,chunkDeleted)) -+ { -+ // found it; -+ + } -+ } -+ else -+ { -+ //T(("File problem file [%d,%d] NAND %d tags[%d,%d]\n", -+ // objId,chunk,theChunk,tags->chunkId,tags->objectId); -+ ++ } else { ++ + failed = 1; -+ + } -+ -+ } -+ else -+ { -+ //T(("No level 0 found for %d\n", chunk)); ++ ++ } 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) ++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 ++ /* 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))); ++ ++ 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__); ++ ++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__); + return YAFFS_OK; + } -+ -+ tn = yaffs_AddOrFindLevel0Tnode(dev,&in->variant.fileVariant, chunkInInode); -+ if(!tn) -+ { ++ ++ tn = yaffs_AddOrFindLevel0Tnode(dev, ++ &in->variant.fileVariant, ++ chunkInInode, ++ NULL); ++ if (!tn) { + return YAFFS_FAIL; + } + -+ existingChunk = tn->level0[chunkInInode & YAFFS_TNODES_LEVEL0_MASK]; -+ -+ 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); ++ 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))); ++ 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 -+ ++ /* 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__); ++ ++ 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) -+ { ++ ++ if (existingChunk == 0) { + in->nDataChunks++; + } -+ -+ tn->level0[chunkInInode & YAFFS_TNODES_LEVEL0_MASK] = (chunkInNAND >> dev->chunkGroupBits); -+ -+ return YAFFS_OK; -+} + ++ yaffs_PutLevel0Tnode(dev,tn,chunkInInode,chunkInNAND); + ++ return YAFFS_OK; ++} + -+static int yaffs_ReadChunkDataFromObject(yaffs_Object *in,int chunkInInode, __u8 *buffer) ++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)); ++ int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL); + -+ memset(buffer,0,in->myDev->nBytesPerChunk); // get sane data if you read a hole ++ 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) ++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; -+ ++ ++ if (chunkId <= 0) ++ return; ++ + dev->nDeletions++; + block = chunkId / dev->nChunksPerBlock; + page = chunkId % dev->nChunksPerBlock; -+ -+ 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_SpareInitialise(&spare); + -+#ifdef CONFIG_MTD_NAND_VERIFY_WRITE ++ bi = yaffs_GetBlockInfo(dev, block); + -+ //read data before write, to ensure correct ecc -+ //if we're using MTD verification under Linux -+// yaffs_ReadChunkFromNAND(dev,chunkId,NULL,&spare,0); -+#endif ++ 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); ++ yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags); ++ yaffs_HandleUpdateChunk(dev, chunkId, &tags); ++ } else { ++ dev->nUnmarkedDeletions++; + } -+ 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 || ++ ++ /* 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++; ++ bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) { ++ dev->nFreeChunks++; ++ ++ yaffs_ClearChunkBit(dev, block, page); + -+ 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); -+ } + ++ 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)); */ + } -+ 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; + -+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. ++ yaffs_Device *dev = in->myDev; + -+ int prevChunkId; -+ yaffs_ExtendedTags prevTags; -+ -+ int newChunkId; -+ yaffs_ExtendedTags newTags; ++ yaffs_CheckGarbageCollection(dev); + -+ yaffs_Device *dev = in->myDev; ++ /* Get the previous chunk at this location in the file if it exists */ ++ prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags); + -+ yaffs_CheckGarbageCollection(dev); ++ /* Set up new tags */ ++ yaffs_InitialiseTags(&newTags); + -+ // 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.chunkId = chunkInInode; + newTags.objectId = in->objectId; -+ newTags.serialNumber = (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1; -+ newTags.byteCount = nBytes; -+ -+// yaffs_CalcTagsECC(&newTags); ++ 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__); + -+ 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; + -+// 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) -+{ ++ __u8 *buffer = NULL; ++ YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1]; ++ ++ yaffs_ObjectHeader *oh = NULL; ++ ++ if (!in->fake || force) { ++ ++ yaffs_CheckGarbageCollection(dev); ++ ++ buffer = yaffs_GetTempBuffer(in->myDev, __LINE__); ++ oh = (yaffs_ObjectHeader *) buffer; + -+ yaffs_BlockInfo *bi; -+ -+ yaffs_Device *dev = in->myDev; -+ -+ int prevChunkId; -+ int retVal = 0; -+ -+ int newChunkId; -+ yaffs_ExtendedTags newTags; -+ -+ __u8 *buffer = NULL; -+ YCHAR oldName[YAFFS_MAX_NAME_LENGTH+1]; -+ -+ // __u8 bufferOld[YAFFS_BYTES_PER_CHUNK]; -+ -+ yaffs_ObjectHeader *oh = NULL; -+ // yaffs_ObjectHeader *ohOld = (yaffs_ObjectHeader *)bufferOld; -+ -+ -+ if(!in->fake || force) -+ { -+ -+ yaffs_CheckGarbageCollection(dev); -+ -+ buffer = yaffs_GetTempBuffer(in->myDev,__LINE__); -+ oh = (yaffs_ObjectHeader *)buffer; -+ + prevChunkId = in->chunkId; -+ -+ if(prevChunkId >= 0) -+ { -+ yaffs_ReadChunkWithTagsFromNAND(dev,prevChunkId,buffer,NULL); -+ memcpy(oldName,oh->name,sizeof(oh->name)); ++ ++ if (prevChunkId >= 0) { ++ result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId, ++ buffer, NULL); ++ memcpy(oldName, oh->name, sizeof(oh->name)); + } + -+ memset(buffer,0xFF,dev->nBytesPerChunk); ++ memset(buffer, 0xFF, dev->nDataBytesPerChunk); + -+ // Header data + oh->type = in->variantType; -+ + oh->yst_mode = in->yst_mode; -+ -+ // shadowing + oh->shadowsObject = shadows; + +#ifdef CONFIG_YAFFS_WINCE @@ -5755,318 +6480,321 @@ index 0000000..bf13f91 + oh->yst_mtime = in->yst_mtime; + oh->yst_ctime = in->yst_ctime; + oh->yst_rdev = in->yst_rdev; -+#endif -+ if(in->parent) -+ { ++#endif ++ if (in->parent) { + oh->parentObjectId = in->parent->objectId; -+ } -+ else -+ { ++ } else { + oh->parentObjectId = 0; + } -+ -+ //oh->sum = in->sum; -+ if(name && *name) -+ { -+ memset(oh->name,0,sizeof(oh->name)); -+ yaffs_strncpy(oh->name,name,YAFFS_MAX_NAME_LENGTH); -+ } -+ else if(prevChunkId) -+ { -+ memcpy(oh->name, oldName,sizeof(oh->name)); -+ } -+ else -+ { -+ memset(oh->name,0,sizeof(oh->name)); ++ ++ if (name && *name) { ++ memset(oh->name, 0, sizeof(oh->name)); ++ yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH); ++ } else if (prevChunkId) { ++ 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; ++ ++ 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 ++ /* Tags */ + yaffs_InitialiseTags(&newTags); + in->serial++; + newTags.chunkId = 0; + newTags.objectId = in->objectId; + newTags.serialNumber = in->serial; -+ -+ // Add extra info for file header -+ ++ ++ /* 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; -+ -+ // 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__); ++ newTags.extraObjectType = in->variantType; ++ ++ /* 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__); + } -+ -+ 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); ++ ++ 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; -+} ++ retVal = newChunkId; + ++ } + -+/////////////////////// Short Operations Cache //////////////////////////////// -+// In many siturations 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. -+// There are a limited number (~10) of cache chunks per device so that we don't -+// need a very intelligent search. ++ 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) ++static void yaffs_FlushFilesChunkCache(yaffs_Object * obj) +{ + yaffs_Device *dev = obj->myDev; -+ int lowest = -99; // Stop compiler whining. ++ int lowest = -99; /* Stop compiler whining. */ + int i; + yaffs_ChunkCache *cache; + int chunkWritten = 0; -+ //int nBytes; + int nCaches = obj->myDev->nShortOpCaches; -+ -+ if (nCaches > 0) -+ { -+ do{ ++ ++ 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) -+ { ++ ++ /* 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 + -+#if 0 -+ nBytes = cache->object->variant.fileVariant.fileSize - ((cache->chunkId -1) * YAFFS_BYTES_PER_CHUNK); -+ -+ if(nBytes > YAFFS_BYTES_PER_CHUNK) -+ { -+ nBytes= YAFFS_BYTES_PER_CHUNK; -+ } -+#endif -+ chunkWritten = yaffs_WriteChunkDataToObject(cache->object, -+ cache->chunkId, -+ cache->data, -+ cache->nBytes,1); ++ 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))); ++ ++ } 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) ++ * ++ * ++ */ + -+// Grab us a 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) ++void yaffs_FlushEntireDeviceCache(yaffs_Device *dev) +{ ++ yaffs_Object *obj; ++ int nCaches = dev->nShortOpCaches; + int i; -+ int usage; -+ int theOne; + -+ if(dev->nShortOpCaches > 0) -+ { -+ for(i = 0; i < dev->nShortOpCaches; i++) -+ { -+ if(!dev->srCache[i].object) -+ { -+ //T(("Grabbing empty %d\n",i)); -+ -+ //printf("Grabbing empty %d\n",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)) -+ { ++ ++ 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; + } + } -+ -+ //T(("Grabbing non-empty %d\n",theOne)); -+ -+ //if(theOne >= 0) printf("Grabbed non-empty cache %d\n",theOne); -+ -+ return theOne >= 0 ? &dev->srCache[theOne] : NULL; -+ } -+ else -+ { ++ ++ ++ return theOne >= 0 ? &dev->srCache[theOne] : NULL; ++ } else { + return NULL; + } -+ -+} + ++} + -+static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device *dev) ++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... -+ ++ ++ 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 -+ -+ ++ ++ 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)) ++ ++ 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; ++ usage = dev->srCache[i].lastUse; + theObj = dev->srCache[i].object; + cache = &dev->srCache[i]; + pushout = i; + } + } -+ -+ if(!cache || cache->dirty) -+ { -+ -+ //printf("Dirty "); ++ ++ if (!cache || cache->dirty) { ++ /* Flush and try again */ + yaffs_FlushFilesChunkCache(theObj); -+ -+ // Try again + cache = yaffs_GrabChunkCacheWorker(dev); + } -+ else -+ { -+ //printf(" pushout %d\n",pushout); -+ } -+ ++ + } + return cache; -+ } -+ else ++ } else + return NULL; + +} + -+ -+// Find a cached chunk -+static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object *obj, int chunkId) ++/* 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) -+ { ++ 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]; + } + } @@ -6074,211 +6802,652 @@ index 0000000..bf13f91 + return NULL; +} + -+// Mark the chunk for the least recently used algorithym -+static void yaffs_UseChunkCache(yaffs_Device *dev, yaffs_ChunkCache *cache, int isAWrite) ++/* 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 ++ if (dev->nShortOpCaches > 0) { ++ if (dev->srLastUse < 0 || dev->srLastUse > 100000000) { ++ /* Reset the cache usages */ + int i; -+ for(i = 1; i < dev->nShortOpCaches; i++) -+ { ++ for (i = 1; i < dev->nShortOpCaches; i++) { + dev->srCache[i].lastUse = 0; + } + dev->srLastUse = 0; + } + + dev->srLastUse++; -+ ++ + cache->lastUse = dev->srLastUse; + -+ if(isAWrite) -+ { ++ 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) ++/* 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 (object->myDev->nShortOpCaches > 0) { ++ yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId); + -+ if(cache) -+ { ++ 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; ++ 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; ++} ++ ++ + -+// 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) ++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(dev->nShortOpCaches > 0) -+ { -+ // Now invalidate it. -+ for(i = 0; i < dev->nShortOpCaches; i++) -+ { -+ if(dev->srCache[i].object == in) -+ { -+ dev->srCache[i].object = NULL; ++ 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; ++ ++ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk)); ++ ++ while(ok && (~baseChunk)){ ++ /* 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)); ++ ++ } ++ ++ 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)) { ++ /* printf("structure parsing failed\n"); */ ++ ok = 0; ++ } ++ ++ if(ok && cp.objectId == ~0) ++ done = 1; ++ else if(ok){ ++ obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType); ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d obj addr %x" TENDSTR), ++ cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj)); ++ 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_WriteCheckpointData(yaffs_Device *dev) ++{ ++ ++ int ok; ++ ++ ok = yaffs_CheckpointOpen(dev,1); ++ ++ if(ok) ++ ok = yaffs_WriteCheckpointValidityMarker(dev,1); ++ if(ok) ++ ok = yaffs_WriteCheckpointDevice(dev); ++ if(ok) ++ ok = yaffs_WriteCheckpointObjects(dev); ++ if(ok) ++ ok = yaffs_WriteCheckpointValidityMarker(dev,0); ++ ++ 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; ++ ++ ok = yaffs_CheckpointOpen(dev,0); /* open for read */ ++ ++ if(ok) ++ ok = yaffs_ReadCheckpointValidityMarker(dev,1); ++ if(ok) ++ ok = yaffs_ReadCheckpointDevice(dev); ++ if(ok) ++ ok = yaffs_ReadCheckpointObjects(dev); ++ if(ok) ++ ok = yaffs_ReadCheckpointValidityMarker(dev,0); ++ ++ + ++ if(!yaffs_CheckpointClose(dev)) ++ ok = 0; + ++ if(ok) ++ dev->isCheckpointed = 1; ++ else ++ dev->isCheckpointed = 0; + ++ return ok ? 1 : 0; + -+///////////////////////// 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, __u32 offset, int nBytes) ++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) ++{ ++ yaffs_ReportOddballBlocks(dev); ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ ++ if(!dev->isCheckpointed) ++ yaffs_WriteCheckpointData(dev); + ++ T(YAFFS_TRACE_CHECKPOINT,(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); ++ ++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed)); ++ ++ yaffs_ReportOddballBlocks(dev); ++ ++ 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->nBytesPerChunk + 1; // The first chunk is 1 -+ start = offset % dev->nBytesPerChunk; + -+ // OK now check for the curveball where the start and end are in -+ // the same chunk. -+ if( (start + n) < dev->nBytesPerChunk) -+ { ++ 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; + } -+ else -+ { -+ nToCopy = dev->nBytesPerChunk - 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->nBytesPerChunk) -+ { -+ if(dev->nShortOpCaches > 0) -+ { -+ -+ // If we can't find the data in the cache, then load it up. -+ -+ if(!cache) -+ { ++ ++ 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_ReadChunkDataFromObject(in, chunk, ++ cache-> ++ data); ++ cache->nBytes = 0; + } -+ -+ yaffs_UseChunkCache(dev,cache,0); ++ ++ yaffs_UseChunkCache(dev, cache, 0); + + cache->locked = 1; + +#ifdef CONFIG_YAFFS_WINCE + yfsd_UnlockYAFFS(TRUE); +#endif -+ memcpy(buffer,&cache->data[start],nToCopy); ++ 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); ++ } 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); ++ memcpy(buffer, &localBuffer[start], nToCopy); + +#ifdef CONFIG_YAFFS_WINCE + yfsd_LockYAFFS(TRUE); +#endif -+ yaffs_ReleaseTempBuffer(dev,localBuffer,__LINE__); ++ yaffs_ReleaseTempBuffer(dev, localBuffer, ++ __LINE__); + } + -+ } -+ else -+ { ++ } 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); ++ __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); ++ yfsd_UnlockYAFFS(TRUE); +#endif -+ memcpy(buffer,localBuffer,dev->nBytesPerChunk); ++ memcpy(buffer, localBuffer, dev->nDataBytesPerChunk); + +#ifdef CONFIG_YAFFS_WINCE -+ yfsd_LockYAFFS(TRUE); -+ yaffs_ReleaseTempBuffer(dev,localBuffer,__LINE__); ++ yfsd_LockYAFFS(TRUE); ++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__); +#endif + +#else -+ // A full chunk. Read directly into the supplied buffer. -+ yaffs_ReadChunkDataFromObject(in,chunk,buffer); ++ /* 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 yaffs_WriteDataToFile(yaffs_Object *in,const __u8 * buffer, __u32 offset, int nBytes, int writeThrough) -+{ -+ + int chunk; + int start; + int nToCopy; @@ -6288,301 +7457,313 @@ index 0000000..bf13f91 + int startOfWrite = offset; + int chunkWritten = 0; + int nBytesRead; -+ ++ + yaffs_Device *dev; -+ ++ + dev = in->myDev; -+ -+ -+ while(n > 0 && chunkWritten >= 0) -+ { -+ chunk = offset / dev->nBytesPerChunk + 1; -+ start = offset % dev->nBytesPerChunk; -+ + -+ // OK now check for the curveball where the start and end are in -+ // the same chunk. -+ -+ if((start + n) < dev->nBytesPerChunk) -+ { ++ 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->nBytesPerChunk); -+ -+ if(nBytesRead > dev->nBytesPerChunk) -+ { -+ nBytesRead = dev->nBytesPerChunk; ++ ++ /* 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->nBytesPerChunk - start; -+ nToWriteBack = dev->nBytesPerChunk; ++ ++ nToWriteBack = ++ (nBytesRead > ++ (start + n)) ? nBytesRead : (start + n); ++ ++ } else { ++ nToCopy = dev->nDataBytesPerChunk - start; ++ nToWriteBack = dev->nDataBytesPerChunk; + } -+ -+ if(nToCopy != dev->nBytesPerChunk) -+ { -+ // An incomplete start or end chunk (or maybe both start and end chunk) -+ if(dev->nShortOpCaches > 0) -+ { ++ ++ 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 it up. -+ cache = yaffs_FindChunkCache(in,chunk); -+ if(!cache && yaffs_CheckSpaceForAllocation(in->myDev)) -+ { ++ /* 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); ++ yaffs_ReadChunkDataFromObject(in, chunk, ++ cache-> ++ data); + } -+ -+ if(cache) -+ { -+ yaffs_UseChunkCache(dev,cache,1); ++ 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); ++ yfsd_UnlockYAFFS(TRUE); +#endif -+ -+ memcpy(&cache->data[start],buffer,nToCopy); ++ ++ memcpy(&cache->data[start], buffer, ++ nToCopy); + +#ifdef CONFIG_YAFFS_WINCE -+ yfsd_LockYAFFS(TRUE); ++ yfsd_LockYAFFS(TRUE); +#endif + cache->locked = 0; + cache->nBytes = nToWriteBack; -+ -+ if(writeThrough) -+ { -+ chunkWritten = yaffs_WriteChunkDataToObject(cache->object, -+ cache->chunkId, -+ cache->data, -+ cache->nBytes,1); ++ ++ if (writeThrough) { ++ chunkWritten = ++ yaffs_WriteChunkDataToObject ++ (cache->object, ++ cache->chunkId, ++ cache->data, cache->nBytes, ++ 1); + cache->dirty = 0; + } + ++ } else { ++ chunkWritten = -1; /* fail the write */ + } -+ 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); -+ ++ } 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); -+ ++ ++ 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__); -+ -+ //T(("Write with readback to chunk %d %d start %d copied %d wrote back %d\n",chunk,chunkWritten,start, nToCopy, nToWriteBack)); ++ chunkWritten = ++ yaffs_WriteChunkDataToObject(in, chunk, ++ localBuffer, ++ nToWriteBack, ++ 0); ++ ++ yaffs_ReleaseTempBuffer(dev, localBuffer, ++ __LINE__); ++ + } -+ -+ } -+ else -+ { -+ ++ ++ } 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__); ++ /* 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); ++ yfsd_UnlockYAFFS(TRUE); +#endif -+ memcpy(localBuffer,buffer,dev->nBytesPerChunk); ++ memcpy(localBuffer, buffer, dev->nDataBytesPerChunk); +#ifdef CONFIG_YAFFS_WINCE -+ yfsd_LockYAFFS(TRUE); ++ yfsd_LockYAFFS(TRUE); +#endif -+ chunkWritten = yaffs_WriteChunkDataToObject(in,chunk,localBuffer,dev->nBytesPerChunk,0); -+ yaffs_ReleaseTempBuffer(dev,localBuffer,__LINE__); ++ 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->nBytesPerChunk,0); ++ /* 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); -+ //T(("Write to chunk %d %d\n",chunk,chunkWritten)); ++ /* Since we've overwritten the cached data, we better invalidate it. */ ++ yaffs_InvalidateChunkCache(in, chunk); + } -+ -+ if(chunkWritten >= 0) -+ { ++ ++ if (chunkWritten >= 0) { + n -= nToCopy; + offset += nToCopy; + buffer += nToCopy; + nDone += nToCopy; + } -+ ++ + } -+ -+ // Update file object -+ -+ if((startOfWrite + nDone) > in->variant.fileVariant.fileSize) -+ { ++ ++ /* Update file object */ ++ ++ if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) { + in->variant.fileVariant.fileSize = (startOfWrite + nDone); + } -+ ++ + in->dirty = 1; -+ ++ + return nDone; +} + -+static void yaffs_PruneResizedChunks(yaffs_Object *in, int newSize) ++ ++/* ---------------------- 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->nBytesPerChunk; -+ -+ int startDel = 1 + (newSize + dev->nBytesPerChunk - 1)/ -+ dev->nBytesPerChunk; ++ 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 -+ { ++ /* 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__); ++ yaffs_DeleteChunk(dev, chunkId, 1, __LINE__); + } + } + } -+ ++ +} + -+int yaffs_ResizeFile(yaffs_Object *in, int newSize) ++int yaffs_ResizeFile(yaffs_Object * in, loff_t newSize) +{ + + int oldFileSize = in->variant.fileVariant.fileSize; -+ int sizeOfPartialChunk; ++ int newSizeOfPartialChunk; ++ int newFullChunks; ++ + yaffs_Device *dev = in->myDev; + -+ sizeOfPartialChunk = newSize % dev->nBytesPerChunk; -+ ++ yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk); + -+ yaffs_FlushFilesChunkCache(in); ++ yaffs_FlushFilesChunkCache(in); + yaffs_InvalidateWholeChunkCache(in); + + yaffs_CheckGarbageCollection(dev); -+ -+ if(in->variantType != YAFFS_OBJECT_TYPE_FILE) -+ { ++ ++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) { + return yaffs_GetFileSize(in); + } -+ -+ if(newSize < oldFileSize) -+ { + -+ yaffs_PruneResizedChunks(in,newSize); -+ -+ if(sizeOfPartialChunk != 0) -+ { -+ int lastChunk = 1+ newSize/dev->nBytesPerChunk; -+ __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 + sizeOfPartialChunk,0, dev->nBytesPerChunk - sizeOfPartialChunk); ++ if (newSize == oldFileSize) { ++ return oldFileSize; ++ } ++ ++ if (newSize < oldFileSize) { ++ ++ yaffs_PruneResizedChunks(in, newSize); ++ ++ if (newSizeOfPartialChunk != 0) { ++ int lastChunk = 1 + newFullChunks; + -+ yaffs_WriteChunkDataToObject(in,lastChunk,localBuffer,sizeOfPartialChunk,1); -+ -+ yaffs_ReleaseTempBuffer(dev,localBuffer,__LINE__); ++ __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); -+ -+ // Write a new object header to show we've shrunk the file -+ // 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, 1,0); -+ } + -+ -+ return newSize; -+ ++ yaffs_PruneFileStructure(dev, &in->variant.fileVariant); + } -+ else -+ { -+ return oldFileSize; ++ /* 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) ++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; ++ ++ 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; + } +} + + + -+// yaffs_FlushFile() updates the file's -+// objectId in NAND -+ -+int yaffs_FlushFile(yaffs_Object *in, int updateTime) ++int yaffs_FlushFile(yaffs_Object * in, int updateTime) +{ + int retVal; -+ if(in->dirty) -+ { -+ //T(("flushing object header\n")); -+ ++ if (in->dirty) { + yaffs_FlushFilesChunkCache(in); -+ if(updateTime) -+ { ++ if (updateTime) { +#ifdef CONFIG_YAFFS_WINCE + yfsd_WinFileTimeNow(in->win_mtime); +#else @@ -6592,330 +7773,323 @@ index 0000000..bf13f91 +#endif + } + -+ retVal = (yaffs_UpdateObjectHeader(in,NULL,0,0,0) >= 0)? YAFFS_OK : YAFFS_FAIL; -+ } -+ else -+ { ++ 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) ++static int yaffs_DoGenericObjectDeletion(yaffs_Object * in) +{ + -+ // First off, invalidate the file's data in the cache, without flushing. ++ /* 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,NULL,0,0); ++ 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, NULL, 0, 0); + + } + -+ + yaffs_RemoveObjectFromDirectory(in); -+ yaffs_DeleteChunk(in->myDev,in->chunkId,1,__LINE__); ++ yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__); + in->chunkId = -1; -+#if 0 -+#ifdef __KERNEL__ -+ if(in->myInode) -+ { -+ in->myInode->u.generic_ip = NULL; -+ in->myInode = 0; -+ } -+#endif -+#endif + + 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) ++/* 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) +{ + -+#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND_DELETION -+ -+ // Delete the file data & tnodes -+ -+ yaffs_DeleteWorker(in, in->variant.fileVariant.top, in->variant.fileVariant.topLevel, 0,NULL); -+ -+ -+ yaffs_FreeTnode(in->myDev,in->variant.fileVariant.top); -+ -+ return yaffs_DoGenericObjectDeletion(in); -+#else + int retVal; -+ int immediateDeletion=0; ++ int immediateDeletion = 0; + -+ if(1) -+ { -+ //in->unlinked = 1; -+ //in->myDev->nUnlinkedFiles++; -+ //in->renameAllowed = 0; ++ if (1) { +#ifdef __KERNEL__ -+ if(!in->myInode) -+ { ++ if (!in->myInode) { + immediateDeletion = 1; + + } +#else -+ if(in->inUse <= 0) -+ { ++ if (in->inUse <= 0) { + immediateDeletion = 1; + + } +#endif -+ if(immediateDeletion) -+ { -+ retVal = yaffs_ChangeObjectName(in, in->myDev->deletedDir,NULL,0,0); -+ T(YAFFS_TRACE_TRACING,(TSTR("yaffs: immediate deletion of file %d" TENDSTR),in->objectId)); -+ in->deleted=1; ++ if (immediateDeletion) { ++ retVal = ++ yaffs_ChangeObjectName(in, in->myDev->deletedDir, ++ NULL, 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); ++ if (0 && in->myDev->isYaffs2) { ++ yaffs_ResizeFile(in, 0); + } + yaffs_SoftDeleteFile(in); ++ } else { ++ retVal = ++ yaffs_ChangeObjectName(in, in->myDev->unlinkedDir, ++ NULL, 0, 0); + } -+ else -+ { -+ retVal = yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,NULL,0,0); -+ } -+ ++ + } + return retVal; -+ -+ -+#endif +} + -+int yaffs_DeleteFile(yaffs_Object *in) ++int yaffs_DeleteFile(yaffs_Object * in) +{ + int retVal = YAFFS_OK; -+ -+ if(in->nDataChunks > 0) -+ { -+ // Use soft deletion -+ if(!in->unlinked) -+ { ++ ++ 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) -+ { ++ 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); ++ 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; ++ yaffs_DoGenericObjectDeletion(in); ++ ++ return YAFFS_OK; + } +} + -+static int yaffs_DeleteDirectory(yaffs_Object *in) ++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); ++ /* 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) ++static int yaffs_DeleteSymLink(yaffs_Object * in) +{ + YFREE(in->variant.symLinkVariant.alias); + -+ return yaffs_DoGenericObjectDeletion(in); ++ return yaffs_DoGenericObjectDeletion(in); +} + -+static int yaffs_DeleteHardLink(yaffs_Object *in) ++static int yaffs_DeleteHardLink(yaffs_Object * in) +{ -+ // remove this hardlink from the list assocaited with the equivalent -+ // object ++ /* remove this hardlink from the list assocaited with the equivalent ++ * object ++ */ + list_del(&in->hardLinks); -+ return yaffs_DoGenericObjectDeletion(in); ++ return yaffs_DoGenericObjectDeletion(in); +} + -+ -+static void yaffs_DestroyObject(yaffs_Object *obj) ++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. ++ 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) ++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 -+ -+ ++ 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); -+ ++ 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) -+ { ++ ++ 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; ++ ++ } 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; + } + } +} + -+int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name) ++ ++static int yaffs_UnlinkObject( yaffs_Object *obj) +{ -+ yaffs_Object *obj; -+ -+ obj = yaffs_FindObjectByName(dir,name); -+ -+ if(obj && obj->unlinkAllowed) -+ { -+ return yaffs_UnlinkWorker(obj); -+ } -+ -+ return YAFFS_FAIL; -+ -+} + -+//////////////// Initialisation Scanning ///////////////// ++ if (obj && obj->unlinkAllowed) { ++ return yaffs_UnlinkWorker(obj); ++ } + ++ return YAFFS_FAIL; + -+void yaffs_HandleShadowedObject(yaffs_Device *dev, int objId, int backwardScanning) ++} ++int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name) +{ -+ //Todo ++ yaffs_Object *obj; ++ ++ obj = yaffs_FindObjectByName(dir, name); ++ return yaffs_UnlinkObject(obj); +} + -+#if 0 -+// For now we use the SmartMedia check. -+// We look at the blockStatus byte in the first two chunks -+// These must be 0xFF to pass as OK. -+// todo: this function needs to be modifyable foir different NAND types -+// and different chunk sizes. Suggest make this into a per-device configurable -+// function. -+static int yaffs_IsBlockBad(yaffs_Device *dev, int blk) ++/*----------------------- Initialisation Scanning ---------------------- */ ++ ++static void yaffs_HandleShadowedObject(yaffs_Device * dev, int objId, ++ int backwardScanning) +{ -+ yaffsExtendedTags *tags; -+ -+ yaffs_ReadChunkFromNAND(dev,blk * dev->nChunksPerBlock,NULL,&tags,1); -+#if 1 -+ if(yaffs_CountBits(spare.blockStatus) < 7) -+ { -+ return 1; -+ } -+#else -+ if(spare.blockStatus != 0xFF) -+ { -+ return 1; -+ } -+#endif -+ yaffs_ReadChunkFromNAND(dev,blk * dev->nChunksPerBlock + 1,NULL,&spare,1); ++ yaffs_Object *obj; + -+#if 1 -+ if(yaffs_CountBits(spare.blockStatus) < 7) -+ { -+ return 1; -+ } -+#else -+ if(spare.blockStatus != 0xFF) -+ { -+ return 1; ++ 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; ++ } + } -+#endif -+ -+ return 0; -+ -+} + -+#endif ++ /* 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 -+{ ++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) ++static int yaffs_Scan(yaffs_Device * dev) +{ + yaffs_ExtendedTags tags; + int blk; @@ -6923,7 +8097,8 @@ index 0000000..bf13f91 + int startIterator; + int endIterator; + int nBlocksToScan = 0; -+ ++ int result; ++ + int chunk; + int c; + int deleted; @@ -6931,271 +8106,285 @@ index 0000000..bf13f91 + yaffs_Object *hardList = NULL; + yaffs_Object *hl; + yaffs_BlockInfo *bi; -+ int sequenceNumber; ++ int sequenceNumber; + yaffs_ObjectHeader *oh; + yaffs_Object *in; + yaffs_Object *parent; + int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; -+ ++ + __u8 *chunkData; + + yaffs_BlockIndex *blockIndex = NULL; + -+ T(YAFFS_TRACE_SCAN,(TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR),dev->internalStartBlock,dev->internalEndBlock)); -+ -+ chunkData = yaffs_GetTempBuffer(dev,__LINE__); ++ 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 (dev->isYaffs2) { ++ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); + } -+ -+ -+ // 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); ++ ++ /* 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))); ++ 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 && ++ } 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) -+ { -+ ++ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { ++ + blockIndex[nBlocksToScan].seq = sequenceNumber; + blockIndex[nBlocksToScan].block = blk; -+ ++ + nBlocksToScan++; + -+ if(sequenceNumber >= dev->sequenceNumber) -+ { -+ dev->sequenceNumber = sequenceNumber; ++ 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)); ++ } 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) -+ { ++ ++ /* 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; -+ } ++ ++ 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) -+ { ++ ++ /* 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 -+ { ++ 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; blockIterator <= endIterator; blockIterator++) -+ { -+ -+ if(dev->isYaffs2) -+ { -+ // get the block to scan in the correct order ++ ++ /* For each block.... */ ++ for (blockIterator = startIterator; blockIterator <= endIterator; ++ blockIterator++) { ++ ++ if (dev->isYaffs2) { ++ /* get the block to scan in the correct order */ + blk = blockIndex[blockIterator].block; -+ } -+ else -+ { ++ } else { + blk = blockIterator; + } + -+ -+ bi = yaffs_GetBlockInfo(dev,blk); ++ bi = yaffs_GetBlockInfo(dev, blk); + state = bi->blockState; -+ ++ + deleted = 0; -+ -+ // For each chunk in each block that needs scanning.... -+ for(c = 0; c < dev->nChunksPerBlock && -+ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) -+ { -+ // Read the tags and decide what to do ++ ++ /* For each chunk in each block that needs scanning....*/ ++ for (c = 0; c < dev->nChunksPerBlock && ++ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { ++ /* Read the tags and decide what to do */ + chunk = blk * dev->nChunksPerBlock + c; -+ -+ 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 ++ 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 ++ 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)); ++ } 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)) -+ { ++ 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)); ++ (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... ++ } else if (tags.chunkId > 0) { ++ /* chunkId > 0 so it is a data chunk... */ + unsigned int endpos; + -+ yaffs_SetChunkBit(dev,blk,c); ++ 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). -+ yaffs_PutChunkIntoFile(in,tags.chunkId,chunk,1); -+ endpos = (tags.chunkId - 1)* dev->nBytesPerChunk + tags.byteCount; -+ if(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; ++ ++ in = yaffs_FindOrCreateObjectByNumber(dev, ++ tags. ++ objectId, ++ YAFFS_OBJECT_TYPE_FILE); ++ /* PutChunkIntoFile checks for a clash (two data chunks with ++ * the same chunkId). ++ */ ++ yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, ++ 1); ++ endpos = ++ (tags.chunkId - 1) * dev->nDataBytesPerChunk + ++ tags.byteCount; ++ if (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); ++ /* 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++; -+ -+ 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. -+ ++ ++ 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(oh->shadowsObject > 0) -+ { -+ yaffs_HandleShadowedObject(dev,oh->shadowsObject,0); ++ ++ in = yaffs_FindOrCreateObjectByNumber(dev, ++ tags. ++ objectId, ++ oh->type); ++ ++ if (oh->shadowsObject > 0) { ++ yaffs_HandleShadowedObject(dev, ++ oh-> ++ shadowsObject, ++ 0); + } -+ -+ if(in->valid) -+ { -+ // We have already filled this one. We have a duplicate and need to resolve it. -+ ++ ++ if (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__); ++ ++ 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__); ++ } else { ++ /* 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 ++ ++ 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; + in->variantType = oh->type; -+ -+ in->yst_mode = oh->yst_mode; ++ ++ 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]; @@ -7204,24 +8393,22 @@ index 0000000..bf13f91 + 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_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; ++ in->chunkId = chunk; ++ ++ } else if (!in->valid) { ++ /* we need to load this info */ + -+ } -+ else if(!in->valid) -+ { -+ // we need to load this info -+ + in->valid = 1; + in->variantType = oh->type; -+ -+ in->yst_mode = oh->yst_mode; ++ ++ 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]; @@ -7230,173 +8417,218 @@ index 0000000..bf13f91 + 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_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; ++ in->chunkId = chunk; + -+ yaffs_SetObjectName(in,oh->name); ++ 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))); ++ /* 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 ++ 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: // Do nothing -+ in->variant.symLinkVariant.alias = yaffs_CloneString(oh->alias); -+ break; ++ /* 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); ++ break; + } + -+ if(parent == dev->deletedDir) -+ { ++ if (parent == dev->deletedDir) { + yaffs_DestroyObject(in); + bi->hasShrinkHeader = 1; + } -+ //T((" %d %d header %d \"%s\" type %d\n",blk,c,tags.objectId,oh->name,in->variantType)); + } + } + } -+ -+ 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; ++ ++ 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); -+ } ++ ++ /* 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) -+ { ++ ++ 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. -+ 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); -+ -+ } -+ -+ } -+ -+ // Handle the unlinked files. Since they were left in an unlinked state we should -+ // just delete them. ++ /* 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 *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 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__); + -+ T(YAFFS_TRACE_SCAN,(TSTR("yaffs_Scan ends" TENDSTR))); ++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); ++ ++ 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; ++ ++#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); ++ ++ yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__); ++ } ++} + -+static int yaffs_ScanBackwards(yaffs_Device *dev) ++static int yaffs_ScanBackwards(yaffs_Device * dev) +{ + yaffs_ExtendedTags tags; + int blk; @@ -7404,1192 +8636,1332 @@ index 0000000..bf13f91 + int startIterator; + int endIterator; + int nBlocksToScan = 0; -+ ++ + int chunk; ++ int result; + int c; + int deleted; + yaffs_BlockState state; + yaffs_Object *hardList = NULL; -+ yaffs_Object *hl; + yaffs_BlockInfo *bi; -+ int sequenceNumber; ++ 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; ++ + + yaffs_BlockIndex *blockIndex = NULL; ++ int altBlockIndex = 0; + -+ -+ if(!dev->isYaffs2) -+ { -+ T(YAFFS_TRACE_SCAN,(TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR))); ++ 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)); -+ -+ chunkData = yaffs_GetTempBuffer(dev,__LINE__); -+ -+ ++ ++ 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)); + -+ 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; ++ } + -+ // 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); ++ 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); -+ ++ ++ yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); ++ + bi->blockState = state; -+ bi->sequenceNumber = sequenceNumber; ++ 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)); + -+ 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))); ++ if(state == YAFFS_BLOCK_STATE_CHECKPOINT){ ++ /* todo .. fix free space ? */ ++ ++ } 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 && ++ } 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) -+ { -+ ++ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { ++ + blockIndex[nBlocksToScan].seq = sequenceNumber; + blockIndex[nBlocksToScan].block = blk; -+ ++ + nBlocksToScan++; + -+ if(sequenceNumber >= dev->sequenceNumber) -+ { -+ dev->sequenceNumber = sequenceNumber; ++ 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)); ++ } 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... ++ ++ T(YAFFS_TRACE_SCAN, ++ (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); ++ ++ ++ ++ YYIELD(); ++ ++ /* Sort the blocks */ ++#ifndef CONFIG_YAFFS_USE_OWN_SORT + { ++ /* Use qsort now. */ ++ 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; -+ } ++ ++ 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. -+ startIterator = 0; -+ endIterator = nBlocksToScan-1; -+ T(YAFFS_TRACE_SCAN_DEBUG,(TSTR("%d blocks to be scanned" TENDSTR),nBlocksToScan)); ++#endif + -+ -+ // For each block.... backwards -+ for(blockIterator = endIterator; blockIterator >= startIterator; blockIterator--) -+ { -+ -+ // get the block to scan in the correct order -+ blk = blockIndex[blockIterator].block; ++ YYIELD(); + ++ T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); + -+ bi = yaffs_GetBlockInfo(dev,blk); ++ /* 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; 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; -+ -+ if( 0 && // Disable since this is redundant. -+ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) -+ { -+ // Let's look at the first chunk in the block -+ chunk = blk * dev->nChunksPerBlock; -+ -+ yaffs_ReadChunkWithTagsFromNAND(dev,chunk,NULL,&tags); + -+ // Let's have a good look at this chunk... -+ -+ 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 -+ -+ // We're looking at the first chunk in the block so the block is unused -+ state = YAFFS_BLOCK_STATE_EMPTY; -+ dev->nErasedBlocks++; -+ dev->nFreeChunks += dev->nChunksPerBlock; -+ } -+ -+ } -+ -+ // For each chunk in each block that needs scanning.... -+ for(c = dev->nChunksPerBlock-1; c >= 0 && -+ (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || -+ state == YAFFS_BLOCK_STATE_ALLOCATING); c--) -+ { -+ // Scan backwards... -+ // Read the tags and decide what to do ++ /* For each chunk in each block that needs scanning.... */ ++ foundChunksInBlock = 0; ++ for (c = dev->nChunksPerBlock - 1; 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; -+ -+ yaffs_ReadChunkWithTagsFromNAND(dev,chunk,NULL,&tags); + -+ // Let's have a good look at this chunk... -+ -+ 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) ++ 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) + { -+ // We're looking at the first chunk in the block so the block is unused ++ /* 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 -+ { -+ // this is the block being allocated from -+ if(state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) -+ { -+ 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)); ++ } 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; ++ dev->nFreeChunks++; + -+ __u32 chunkBase = (tags.chunkId - 1)* dev->nBytesPerChunk; ++ } 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); ++ ++ yaffs_SetChunkBit(dev, blk, c); + bi->pagesInUse++; -+ -+ in = yaffs_FindOrCreateObjectByNumber(dev,tags.objectId,YAFFS_OBJECT_TYPE_FILE); -+ if(in->variantType == YAFFS_OBJECT_TYPE_FILE && -+ chunkBase < in->variant.fileVariant.shrinkSize) -+ { -+ // This has not been invalidated by a resize -+ yaffs_PutChunkIntoFile(in,tags.chunkId,chunk,-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->nBytesPerChunk + 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; ++ ++ in = yaffs_FindOrCreateObjectByNumber(dev, ++ tags. ++ objectId, ++ YAFFS_OBJECT_TYPE_FILE); ++ if (in->variantType == YAFFS_OBJECT_TYPE_FILE ++ && chunkBase < ++ in->variant.fileVariant.shrinkSize) { ++ /* This has not been invalidated by a resize */ ++ yaffs_PutChunkIntoFile(in, tags.chunkId, ++ chunk, -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 { ++ /* This chunk has been invalidated by a resize, so delete */ ++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__); ++ + } -+ else -+ { -+ // This chunk has been invalidated by a resize, so delete -+ yaffs_DeleteChunk(dev,chunk,1,__LINE__); -+ -+ -+ } -+ //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); ++ } 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 (tags.extraHeaderInfoAvailable) { ++ in = yaffs_FindOrCreateObjectByNumber ++ (dev, tags.objectId, ++ tags.extraObjectType); + } + -+ -+ if(!in || !in->valid) -+ { -+ -+ // 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. -+ -+ yaffs_ReadChunkWithTagsFromNAND(dev,chunk,chunkData,NULL); -+ -+ oh = (yaffs_ObjectHeader *)chunkData; -+ -+ if(!in) -+ in = yaffs_FindOrCreateObjectByNumber(dev,tags.objectId,oh->type); -+ ++ 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) { ++ /* 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) -+ { ++ ++ 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 && ++ in->variant.fileVariant. ++ shrinkSize > thisSize) { ++ in->variant.fileVariant. ++ shrinkSize = ++ thisSize; + } -+ -+ if(isShrink) -+ { ++ ++ if (isShrink) { + bi->hasShrinkHeader = 1; + } -+ ++ + } -+ // Use existing - destroy this one. -+ yaffs_DeleteChunk(dev,chunk,1,__LINE__); -+ ++ /* 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 ++ ++ 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; -+ in->variantType = oh->type; -+ -+ in->yst_mode = oh->yst_mode; ++ ++ 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]; ++ 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; ++ 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 { ++ in->variantType = tags.extraObjectType; ++ in->lazyLoaded = 1; ++ } ++ ++ in->chunkId = chunk; ++ ++ } else if (!in->valid) { ++ /* we need to load this info */ + -+ } -+ else if(!in->valid) -+ { -+ // we need to load this info -+ + in->valid = 1; -+ in->variantType = oh->type; -+ -+ in->yst_mode = oh->yst_mode; ++ 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]; ++ 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; ++ 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); + -+ if(oh->shadowsObject > 0) -+ { -+ yaffs_HandleShadowedObject(dev,oh->shadowsObject,0); -+ } + ++ yaffs_SetObjectName(in, oh->name); ++ parent = ++ yaffs_FindOrCreateObjectByNumber ++ (dev, oh->parentObjectId, ++ YAFFS_OBJECT_TYPE_DIRECTORY); ++ ++ fileSize = oh->fileSize; ++ isShrink = oh->isShrink; ++ equivalentObjectId = oh->equivalentObjectId; + -+ 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 ++ 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; + -+ 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); ++ in->dirty = 0; + -+ if((parent == dev->deletedDir || -+ parent == dev->unlinkedDir)) ++ /* 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) + { -+ in->deleted = 1; // If it is unlinked at start up then it wants deleting ++ /* 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; + } -+ -+ if( oh->isShrink) -+ { -+ // Mark the block as having a shrinkHeader ++ ++ 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 < oh->fileSize) -+ { -+ in->variant.fileVariant.fileSize = oh->fileSize; -+ in->variant.fileVariant.scannedFileSize = in->variant.fileVariant.fileSize; -+ } -+ -+ if(oh->isShrink && -+ in->variant.fileVariant.shrinkSize > oh->fileSize) -+ { -+ in->variant.fileVariant.shrinkSize = 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: // Do nothing -+ in->variant.symLinkVariant.alias = yaffs_CloneString(oh->alias); -+ break; -+ } + -+#if 0 -+ if(parent == dev->deletedDir) -+ { -+ yaffs_DestroyObject(in); -+ 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); ++ break; + } -+#endif -+ //T((" %d %d header %d \"%s\" type %d\n",blk,c,tags.objectId,oh->name,in->variantType)); ++ + } + } + } -+ -+ 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; ++ ++ 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); -+ } ++ ++ /* 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) -+ { ++ ++ if (altBlockIndex) ++ YFREE_ALT(blockIndex); ++ else + YFREE(blockIndex); -+ } + -+ // Ok, we've done all the scanning. ++ /* 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); + -+ // Fix up the hard link chains. -+ // We should now have scanned all the objects, now it's time to add these -+ // hardlinks. -+ 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); -+ -+ } -+ -+ } + ++ /* ++ * Sort out state of unlinked and deleted objects. ++ */ + { -+ struct list_head *i; ++ 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 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); -+ ++ } ++ ++ /* 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__); + -+ T(YAFFS_TRACE_SCAN,(TSTR("yaffs_ScanBackwards ends" TENDSTR))); ++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); ++ ++ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR))); + + return YAFFS_OK; +} + ++/*------------------------------ Directory Functions ----------------------------- */ + -+ -+////////////////////////// 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) ++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))); ++ 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))); ++ 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 ++ 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 -+ list_del_init(&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); ++ /* Now add it */ ++ list_add(&obj->siblings, &directory->variant.directoryVariant.children); + obj->parent = directory; -+ -+ if(directory == obj->myDev->unlinkedDir || directory == obj->myDev->deletedDir) -+ { ++ ++ if (directory == obj->myDev->unlinkedDir ++ || directory == obj->myDev->deletedDir) { + obj->unlinked = 1; + obj->myDev->nUnlinkedFiles++; + obj->renameAllowed = 0; + } +} + -+static void yaffs_RemoveObjectFromDirectory(yaffs_Object *obj) -+{ -+ list_del_init(&obj->siblings); -+ obj->parent = NULL; -+} -+ -+yaffs_Object *yaffs_FindObjectByName(yaffs_Object *directory,const YCHAR *name) ++yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory, ++ const YCHAR * name) +{ + int sum; -+ ++ + struct list_head *i; -+ YCHAR buffer[YAFFS_MAX_NAME_LENGTH+1]; -+ ++ YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; ++ + yaffs_Object *l; -+ -+ if(!name) -+ { ++ ++ if (!name) { + return NULL; + } + -+ if(!directory) -+ { -+ T(YAFFS_TRACE_ALWAYS,(TSTR("tragedy: yaffs_FindObjectByName: null pointer directory"TENDSTR))); ++ 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))); ++ 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); -+ -+ // Special case for lost-n-found -+ if(l->objectId == YAFFS_OBJECTID_LOSTNFOUND) -+ { -+ if(yaffs_strcmp(name,YAFFS_LOSTNFOUND_NAME) == 0) -+ { ++ ++ 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 ++ } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0) + { -+ // Do a real check -+ yaffs_GetObjectName(l,buffer,YAFFS_MAX_NAME_LENGTH); -+ if(yaffs_strcmp(name,buffer) == 0) -+ { ++ /* LostnFound cunk called Objxxx ++ * Do a real check ++ */ ++ yaffs_GetObjectName(l, buffer, ++ YAFFS_MAX_NAME_LENGTH); ++ if (yaffs_strcmp(name, buffer) == 0) { + return l; + } -+ -+ } ++ ++ } + } + } -+ ++ + return NULL; +} + + -+int yaffs_ApplyToDirectoryChildren(yaffs_Object *theDir,int (*fn)(yaffs_Object *)) ++#if 0 ++int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir, ++ int (*fn) (yaffs_Object *)) +{ -+ struct list_head *i; ++ struct list_head *i; + yaffs_Object *l; -+ + -+ if(!theDir) -+ { -+ T(YAFFS_TRACE_ALWAYS,(TSTR("tragedy: yaffs_FindObjectByName: null pointer directory"TENDSTR))); ++ 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))); ++ 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)) -+ { ++ ++ 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. ++ */ + -+// GetEquivalentObject dereferences any hard links to get to the -+// actual object. -+ -+yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj) ++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 ++ 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; + } + return obj; + +} + -+int yaffs_GetObjectName(yaffs_Object *obj,YCHAR *name,int buffSize) ++int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize) +{ -+ memset(name,0,buffSize * sizeof(YCHAR)); ++ memset(name, 0, buffSize * sizeof(YCHAR)); + -+ if(obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) -+ { -+ yaffs_strncpy(name,YAFFS_LOSTNFOUND_NAME,buffSize - 1); -+ } -+ else if(obj->chunkId <= 0) -+ { ++ 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); ++ /* 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); ++ else if (obj->shortName[0]) { ++ yaffs_strcpy(name, obj->shortName); + } +#endif -+ else -+ { -+ __u8 *buffer = yaffs_GetTempBuffer(obj->myDev,__LINE__); -+ -+ yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)buffer; ++ else { ++ int result; ++ __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__); + -+ memset(buffer,0,obj->myDev->nBytesPerChunk); -+ -+ if(obj->chunkId >= 0) -+ { -+ yaffs_ReadChunkWithTagsFromNAND(obj->myDev,obj->chunkId,buffer,NULL); ++ 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_strncpy(name, oh->name, buffSize - 1); + -+ yaffs_ReleaseTempBuffer(obj->myDev,buffer,__LINE__); ++ yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__); + } -+ ++ + return yaffs_strlen(name); +} + -+int yaffs_GetObjectFileLength(yaffs_Object *obj) ++int yaffs_GetObjectFileLength(yaffs_Object * obj) +{ -+ -+ // Dereference any hard linking ++ ++ /* Dereference any hard linking */ + obj = yaffs_GetEquivalentObject(obj); -+ -+ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) -+ { ++ ++ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { + return obj->variant.fileVariant.fileSize; + } -+ if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) -+ { ++ 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; + } -+ else -+ { -+ // Only a directory should drop through to here -+ return obj->myDev->nBytesPerChunk; -+ } +} + -+int yaffs_GetObjectLinkCount(yaffs_Object *obj) ++int yaffs_GetObjectLinkCount(yaffs_Object * obj) +{ -+ int count = 0; ++ int count = 0; + struct list_head *i; -+ -+ if(!obj->unlinked) -+ { -+ count++; // the object itself ++ ++ if (!obj->unlinked) { ++ count++; /* the object itself */ + } -+ list_for_each(i,&obj->hardLinks) -+ { -+ count++; // add the hard links; ++ list_for_each(i, &obj->hardLinks) { ++ count++; /* add the hard links; */ + } + return count; -+ -+} + ++} + -+int yaffs_GetObjectInode(yaffs_Object *obj) ++int yaffs_GetObjectInode(yaffs_Object * obj) +{ + obj = yaffs_GetEquivalentObject(obj); -+ ++ + return obj->objectId; +} + -+unsigned yaffs_GetObjectType(yaffs_Object *obj) ++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; ++ ++ 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) ++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj) +{ + obj = yaffs_GetEquivalentObject(obj); -+ if(obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) -+ { ++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) { + return yaffs_CloneString(obj->variant.symLinkVariant.alias); -+ } -+ else -+ { ++ } else { + return yaffs_CloneString(_Y("")); + } +} + +#ifndef CONFIG_YAFFS_WINCE + -+int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr) ++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); -+ ++ ++ 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) ++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_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 + -+int yaffs_DumpObject(yaffs_Object *obj) ++#if 0 ++int yaffs_DumpObject(yaffs_Object * obj) +{ -+// __u8 buffer[YAFFS_BYTES_PER_CHUNK]; + YCHAR name[257]; -+// yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *)buffer; + -+// memset(buffer,0,YAFFS_BYTES_PER_CHUNK); -+ -+// if(obj->chunkId >= 0) -+// { -+// yaffs_ReadChunkFromNAND(obj->myDev,obj->chunkId,buffer,NULL); -+// } -+ -+ 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))); ++ 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))); + -+#if 0 -+ YPRINTF(("Object %d \"%s\"\n dirty %d valid %d serial %d sum %d chunk %d\n", -+ obj->objectId, oh->name, obj->dirty, obj->valid, obj->serial, -+ obj->sum, obj->chunkId)); -+ switch(obj->variantType) -+ { -+ case YAFFS_OBJECT_TYPE_FILE: -+ YPRINTF((" FILE length %d\n",obj->variant.fileVariant.fileSize)); -+ break; -+ case YAFFS_OBJECT_TYPE_DIRECTORY: -+ YPRINTF((" DIRECTORY\n")); -+ break; -+ case YAFFS_OBJECT_TYPE_HARDLINK: //todo -+ case YAFFS_OBJECT_TYPE_SYMLINK: -+ case YAFFS_OBJECT_TYPE_UNKNOWN: -+ default: -+ } -+#endif -+ + return YAFFS_OK; +} ++#endif + ++/*---------------------------- Initialisation code -------------------------------------- */ + -+///////////////////////// Initialisation code /////////////////////////// -+ -+ -+static int yaffs_CheckDevFunctions(const yaffs_Device *dev) ++static int yaffs_CheckDevFunctions(const yaffs_Device * dev) +{ + -+ // Common functions, gotta have -+ if(!dev->eraseBlockInNAND || -+ !dev->initialiseNAND) return 0; ++ /* 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; ++ /* 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; ++ /* 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 ++ return 0; /* bad */ +} + + -+int yaffs_GutsInitialise(yaffs_Device *dev) ++static void 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); ++ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir); ++} ++ ++int yaffs_GutsInitialise(yaffs_Device * dev) +{ + unsigned x; + int bits; -+ int extraBits; -+ int nBlocks; + -+ T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); -+ // Check stuff that must be set ++ T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR))); + -+ if(!dev) -+ { -+ T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: Need a device" 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->internalEndBlock = dev->endBlock; + dev->blockOffset = 0; + dev->chunkOffset = 0; + dev->nFreeChunks = 0; -+ -+ if(dev->startBlock == 0) -+ { ++ ++ if (dev->startBlock == 0) { + dev->internalStartBlock = dev->startBlock + 1; -+ dev->internalEndBlock = dev->endBlock + 1; ++ dev->internalEndBlock = dev->endBlock + 1; + dev->blockOffset = 1; + dev->chunkOffset = dev->nChunksPerBlock; + } + -+ // Check geometry parameters. -+ -+ if( (dev->isYaffs2 && dev->nBytesPerChunk <1024) || -+ (!dev->isYaffs2 && dev->nBytesPerChunk !=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->nBytesPerChunk, dev->isYaffs2 ? "2" : "")); ++ /* 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))); ++ 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))); ++ /* 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))); ++ /* 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))); ++ 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. -+ // ++ /* Finished with most checks. One or two more checks happen later on too. */ + + dev->isMounted = 1; + + -+ nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; -+ + -+ -+ // OK now calculate a few things for the device -+ // Calculate chunkGroupBits. -+ // We need to find the next power of 2 > than internalEndBlock -+ -+ x = dev->nChunksPerBlock * (dev->internalEndBlock+1); ++ /* OK now calculate a few things for the device */ + -+ for(bits = extraBits = 0; x > 1; bits++) -+ { -+ if(x & 1) extraBits++; -+ x >>= 1; -+ } ++ /* ++ * 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 ++ */ + -+ if(extraBits > 0) bits++; ++ x = dev->nChunksPerBlock * (dev->internalEndBlock + 1); + ++ bits = ShiftsGE(x); + -+ // Level0 Tnodes are 16 bits, 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 <= 16) -+ { -+ dev->chunkGroupBits = 0; ++ /* 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->chunkGroupBits = bits - 16; -+ } -+ ++ 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))); -+ ++ 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 ++ /* 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->nBackgroundDeletions = 0; + dev->nUnlinkedFiles = 0; -+ dev->eccFixed=0; -+ dev->eccUnfixed=0; -+ dev->tagsEccFixed=0; -+ dev->tagsEccUnfixed=0; ++ dev->eccFixed = 0; ++ dev->eccUnfixed = 0; ++ dev->tagsEccFixed = 0; ++ dev->tagsEccUnfixed = 0; + dev->nErasureFailures = 0; + dev->nErasedBlocks = 0; + dev->isDoingGC = 0; -+ -+ //dev->localBuffer = YMALLOC(dev->nBytesPerChunk); -+ // Initialise temporary buffers ++ dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */ ++ ++ /* Initialise temporary buffers and caches. */ + { + int i; -+ for(i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) -+ { -+ dev->tempBuffer[i].line = 0; // not in use -+ dev->tempBuffer[i].buffer = YMALLOC(dev->nBytesPerChunk); ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { ++ dev->tempBuffer[i].line = 0; /* not in use */ ++ dev->tempBuffer[i].buffer = ++ YMALLOC_DMA(dev->nDataBytesPerChunk); + } + } + -+ -+ -+ yaffs_InitialiseBlocks(dev,nBlocks); -+ -+ yaffs_InitialiseTnodes(dev); -+ -+ yaffs_InitialiseObjects(dev); -+ -+ dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); -+ -+ if(dev->nShortOpCaches > 0) -+ { ++ if (dev->nShortOpCaches > 0) { + int i; -+ -+ if(dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) -+ { ++ ++ if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) { + dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES; + } -+ -+ dev->srCache = YMALLOC( dev->nShortOpCaches * sizeof(yaffs_ChunkCache)); -+ -+ for(i=0; i < dev->nShortOpCaches; i++) -+ { ++ ++ dev->srCache = ++ YMALLOC(dev->nShortOpCaches * sizeof(yaffs_ChunkCache)); ++ ++ for (i = 0; i < dev->nShortOpCaches; i++) { + dev->srCache[i].object = NULL; + dev->srCache[i].lastUse = 0; + dev->srCache[i].dirty = 0; -+ dev->srCache[i].data = YMALLOC(dev->nBytesPerChunk); ++ dev->srCache[i].data = YMALLOC_DMA(dev->nDataBytesPerChunk); + } + dev->srLastUse = 0; + } + + dev->cacheHits = 0; + -+ -+ // Initialise the unlinked, root and lost and found directories -+ dev->lostNFoundDir = dev->rootDir = 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->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32)); + -+ 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); -+ yaffs_AddObjectToDirectory(dev->rootDir,dev->lostNFoundDir); -+ -+ if(dev->isYaffs2) -+ { ++ if (dev->isYaffs2) { + dev->useHeaderFileSize = 1; + } -+ -+ // Now scan the flash. -+ -+ if(dev->isYaffs2) -+ yaffs_ScanBackwards(dev); -+ else ++ ++ yaffs_InitialiseBlocks(dev); ++ yaffs_InitialiseTnodes(dev); ++ yaffs_InitialiseObjects(dev); ++ ++ yaffs_CreateInitialDirectories(dev); ++ ++ ++ /* Now scan the flash. */ ++ if (dev->isYaffs2) { ++ if(yaffs_CheckpointRestore(dev)) { ++ T(YAFFS_TRACE_CHECKPOINT, ++ (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); ++ yaffs_InitialiseBlocks(dev); ++ yaffs_InitialiseTnodes(dev); ++ yaffs_InitialiseObjects(dev); ++ yaffs_CreateInitialDirectories(dev); ++ ++ yaffs_ScanBackwards(dev); ++ } ++ }else + yaffs_Scan(dev); -+ -+ // Zero out stats ++ ++ /* Zero out stats */ + dev->nPageReads = 0; -+ dev->nPageWrites = 0; ++ dev->nPageWrites = 0; + dev->nBlockErasures = 0; + dev->nGCCopies = 0; + dev->nRetriedWrites = 0; + + dev->nRetiredBlocks = 0; -+ ++ + yaffs_VerifyFreeChunks(dev); + -+ T(YAFFS_TRACE_ALWAYS,(TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); ++ T(YAFFS_TRACE_TRACING, ++ (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR))); + return YAFFS_OK; -+ ++ +} + -+void yaffs_Deinitialise(yaffs_Device *dev) ++void yaffs_Deinitialise(yaffs_Device * dev) +{ -+ if(dev->isMounted) -+ { ++ if (dev->isMounted) { + int i; -+ ++ + yaffs_DeinitialiseBlocks(dev); + yaffs_DeinitialiseTnodes(dev); + yaffs_DeinitialiseObjects(dev); -+ if(dev->nShortOpCaches > 0) -+ { -+ -+ for(i=0; i < dev->nShortOpCaches; i++) -+ { ++ if (dev->nShortOpCaches > 0) { ++ ++ for (i = 0; i < dev->nShortOpCaches; i++) { + YFREE(dev->srCache[i].data); + } + @@ -8598,170 +9970,130 @@ index 0000000..bf13f91 + + YFREE(dev->gcCleanupList); + -+ for(i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) -+ { ++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) { + YFREE(dev->tempBuffer[i].buffer); + } -+ -+ dev->isMounted = 0; -+ } -+ -+} -+ -+#if 0 + -+int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) -+{ -+ int nFree = dev->nFreeChunks - (dev->nChunksPerBlock * YAFFS_RESERVED_BLOCKS); -+ -+ struct list_head *i; -+ yaffs_Object *l; -+ -+ -+ // To the free chunks add the chunks that are in the deleted unlinked files. -+ list_for_each(i,&dev->deletedDir->variant.directoryVariant.children) -+ { -+ l = list_entry(i, yaffs_Object,siblings); -+ if(l->deleted) -+ { -+ nFree++; -+ nFree += l->nDataChunks; -+ } ++ dev->isMounted = 0; + } -+ -+ -+ // printf("___________ nFreeChunks is %d nFree is %d\n",dev->nFreeChunks,nFree); -+ -+ if(nFree < 0) nFree = 0; + -+ return nFree; -+ +} + -+#endif -+ -+static int yaffs_CountFreeChunks(yaffs_Device *dev) ++static int yaffs_CountFreeChunks(yaffs_Device * dev) +{ + int nFree; + int b; + -+ yaffs_BlockInfo *blk; ++ 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; ++ 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; -+} -+ + ++ return nFree; ++} + -+int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev) ++int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev) +{ -+ // This is what we report to the outside world ++ /* This is what we report to the outside world */ + + int nFree; + int nDirtyCacheChunks; -+ -+#if 1 ++ 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 -+ ++ /* 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++; ++ for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) { ++ if (dev->srCache[i].dirty) ++ nDirtyCacheChunks++; + } + } -+ ++ + nFree -= nDirtyCacheChunks; -+ ++ + nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock); + -+ if(nFree < 0) nFree = 0; ++ /* 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; + -+ return nFree; -+ +} + -+static int yaffs_freeVerificationFailures; ++static int yaffs_freeVerificationFailures; + -+static void yaffs_VerifyFreeChunks(yaffs_Device *dev) ++static void yaffs_VerifyFreeChunks(yaffs_Device * dev) +{ + int counted = yaffs_CountFreeChunks(dev); -+ ++ + int difference = dev->nFreeChunks - counted; -+ -+ if(difference) -+ { -+ T(YAFFS_TRACE_ALWAYS,(TSTR("Freechunks verification failure %d %d %d" TENDSTR),dev->nFreeChunks,counted,difference)); -+ yaffs_freeVerificationFailures++; ++ ++ if (difference) { ++ T(YAFFS_TRACE_ALWAYS, ++ (TSTR("Freechunks verification failure %d %d %d" TENDSTR), ++ dev->nFreeChunks, counted, difference)); ++ yaffs_freeVerificationFailures++; + } +} + -+/////////////////// YAFFS test code ////////////////////////////////// ++/*---------------------------------------- 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))); \ ++ 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") ++/* 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") ++ yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode") +#endif -+ yaffs_CheckStruct(yaffs_ObjectHeader,512,"yaffs_ObjectHeader") -+ -+ -+ return YAFFS_OK; -+} ++ yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader") + -+#if 0 -+void yaffs_GutsTest(yaffs_Device *dev) -+{ -+ -+ if(yaffs_CheckStructures() != YAFFS_OK) -+ { -+ T(YAFFS_TRACE_ALWAYS,(TSTR("One or more structures malformed-- aborting\n" TENDSTR))); -+ return; -+ } -+ -+ yaffs_TnodeTest(dev); -+ yaffs_ObjectTest(dev); ++ return YAFFS_OK; +} -+#endif -+ -+ -diff --git a/fs/yaffs/yaffs_guts.h b/fs/yaffs/yaffs_guts.h -new file mode 100644 -index 0000000..58c52e0 ---- /dev/null -+++ b/fs/yaffs/yaffs_guts.h -@@ -0,0 +1,759 @@ +diff -urN linux.old/fs/yaffs2/yaffs_guts.h linux.dev/fs/yaffs2/yaffs_guts.h +--- linux.old/fs/yaffs2/yaffs_guts.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_guts.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,893 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * yaffs_guts.h: Configuration etc for yaffs_guts @@ -8778,7 +10110,7 @@ index 0000000..58c52e0 + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + * -+ * $Id: yaffs_guts.h,v 1.11 2005/07/31 06:52:40 charles Exp $ ++ * $Id: yaffs_guts.h,v 1.25 2006/10/13 08:52:49 charles Exp $ + */ + +#ifndef __YAFFS_GUTS_H__ @@ -8790,12 +10122,13 @@ index 0000000..58c52e0 +#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 ++/* 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 @@ -8817,7 +10150,7 @@ index 0000000..58c52e0 +#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024 +#define YAFFS_MIN_YAFFS2_SPARE_SIZE 32 + -+#define YAFFS_MAX_CHUNK_ID 0x000FFFFF ++#define YAFFS_MAX_CHUNK_ID 0x000FFFFF + +#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF + @@ -8828,7 +10161,11 @@ index 0000000..58c52e0 +#define YAFFS_NOBJECT_BUCKETS 256 + + -+#define YAFFS_OBJECT_SPACE 0x40000 ++#define YAFFS_OBJECT_SPACE 0x40000 ++ ++#define YAFFS_NCHECKPOINT_OBJECTS 5000 ++ ++#define YAFFS_CHECKPOINT_VERSION 2 + +#ifdef CONFIG_YAFFS_UNICODE +#define YAFFS_MAX_NAME_LENGTH 127 @@ -8840,36 +10177,41 @@ index 0000000..58c52e0 + +#define YAFFS_SHORT_NAME_LENGTH 15 + -+ -+#define YAFFS_OBJECTID_ROOT 1 ++/* 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 + -+// 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. -+ ++/* 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 -+{ ++/* 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.. ++ 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 @@ -8878,40 +10220,40 @@ index 0000000..58c52e0 +} yaffs_ChunkCache; + + -+#ifndef CONFIG_YAFFS_NO_YAFFS1 -+// Tags structures in RAM -+// NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise -+// the structure size will get blown out. + -+typedef struct -+{ ++/* 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; ++ 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]; ++typedef union { ++ yaffs_Tags asTags; ++ __u8 asBytes[8]; +} yaffs_TagsUnion; + +#endif + -+typedef enum -+{ ++/* 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 -+{ ++typedef enum { + YAFFS_OBJECT_TYPE_UNKNOWN, + YAFFS_OBJECT_TYPE_FILE, + YAFFS_OBJECT_TYPE_SYMLINK, @@ -8920,157 +10262,162 @@ index 0000000..58c52e0 + YAFFS_OBJECT_TYPE_SPECIAL +} yaffs_ObjectType; + -+ -+typedef struct -+{ ++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; // Only valid when we read. -+ unsigned blockBad; // Only valid on reading ++ 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 */ + -+ // 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 ++ /* The following stuff only has meaning when we read */ ++ yaffs_ECCResult eccResult; ++ unsigned blockBad; + -+ // 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? ++ /* YAFFS 1 stuff */ ++ unsigned chunkDeleted; /* The chunk is marked deleted */ ++ unsigned serialNumber; /* Yaffs1 2-bit serial number */ + -+ unsigned extraFileLength; // Length if it is a file -+ unsigned extraEquivalentObjectId; // Equivalent object Id if it is a hard link ++ /* 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; + -+ unsigned validMarker1; -+ +} yaffs_ExtendedTags; + -+#ifndef CONFIG_YAFFS_NO_YAFFS1 -+// Spare structure -+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]; ++/* 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 ++/*Special structure for passing through to mtd */ +struct yaffs_NANDSpare { -+ yaffs_Spare spare; -+ int eccres1; -+ int eccres2; ++ yaffs_Spare spare; ++ int eccres1; ++ int eccres2; +}; -+#endif + -+ -+// Block data in RAM ++/* Block data in RAM */ + +typedef enum { -+ YAFFS_BLOCK_STATE_UNKNOWN = 0, ++ 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. -+ // 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. -+ // At least one page holds valid data. -+ -+ YAFFS_BLOCK_STATE_DIRTY, // All pages have been allocated and deleted. -+ // Erase me, reuse me. -+ -+ YAFFS_BLOCK_STATE_COLLECTING, // This block is being garbage collected -+ -+ YAFFS_BLOCK_STATE_DEAD // This block has failed and is not in use ++ 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_BlockState; ++ 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. ++ */ + -+typedef struct -+{ ++ 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; ++ ++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 bank 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 */ + -+ int softDeletions:12; // number of soft deleted pages -+ int pagesInUse:12; // 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. +#ifdef CONFIG_YAFFS_YAFFS2 -+ __u32 hasShrinkHeader:1;// This block has at least one object header that does a shrink -+ __u32 sequenceNumber; // block sequence number for 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 */ + -+//////////////////// Object structure /////////////////////////// -+// This is the object structure as stored on NAND -+ -+typedef struct -+{ ++typedef struct { + yaffs_ObjectType type; + -+ // Apply to everything -+ int parentObjectId; -+ __u16 sum__NoLongerUsed; // checksum of name. Calc this off the name to prevent inconsistencies -+ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; ++ /* 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 ++ /* 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; // user ID of owner -+ __u32 yst_gid; // group ID of owner -+ __u32 yst_atime; // time of last access -+ __u32 yst_mtime; // time of last modification -+ __u32 yst_ctime; // time of last change ++ __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. ++ /* 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 (maj/min) -+ ++ ++ __u32 yst_rdev; /* device stuff for block and char devices (major/min) */ ++ +#ifdef CONFIG_YAFFS_WINCE + __u32 win_ctime[2]; + __u32 win_atime[2]; @@ -9080,130 +10427,114 @@ index 0000000..58c52e0 + __u32 roomToGrow[10]; +#endif + -+ int shadowsObject; // This object header shadows the specified object if not > 0 ++ int shadowsObject; /* This object header shadows the specified object if > 0 */ + -+ // isShrink applies to object headers written when we shrink the file (ie resize) ++ /* isShrink applies to object headers written when we shrink the file (ie resize) */ + __u32 isShrink; -+ -+} yaffs_ObjectHeader; -+ + ++} yaffs_ObjectHeader; + -+//////////////////// Tnode /////////////////////////// ++/*--------------------------- Tnode -------------------------- */ + -+union yaffs_Tnode_union -+{ ++union yaffs_Tnode_union { +#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG -+ union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL+1]; ++ union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1]; +#else + union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL]; +#endif -+ __u16 level0[YAFFS_NTNODES_LEVEL0]; -+ ++/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */ ++ +}; + +typedef union yaffs_Tnode_union yaffs_Tnode; + -+struct yaffs_TnodeList_struct -+{ ++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 ++ */ + -+ -+/////////////////// 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 -+{ ++typedef struct { + __u32 fileSize; + __u32 scannedFileSize; + __u32 shrinkSize; -+ int topLevel; ++ int topLevel; + yaffs_Tnode *top; +} yaffs_FileStructure; + -+typedef struct -+{ -+ struct list_head children; // list of child links ++typedef struct { ++ struct list_head children; /* list of child links */ +} yaffs_DirectoryStructure; + -+typedef struct -+{ ++typedef struct { + YCHAR *alias; +} yaffs_SymLinkStructure; + -+typedef struct -+{ ++typedef struct { + struct yaffs_ObjectStruct *equivalentObject; -+ __u32 equivalentObjectId; ++ __u32 equivalentObjectId; +} yaffs_HardLinkStructure; + -+typedef union -+{ ++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 pseudo directory. -+ __u8 fake:1; // A fake object has no presence on NAND. -+ __u8 renameAllowed:1; // Some objects are not allowed to be renamed. ++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 serial; // serial number of chunk in NAND. Store here so we don't have to -+ -+ __u8 deferedFree: 1; // For Linux kernel. Object is removed from NAND, but still in the inode cache. -+ // Free of object is defered. -+ -+ __u8 lazyLoaded; // Vital info has been loaded from tags. Not all info available. -+ // ++ __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 */ + -+ // read back the old one to update. -+ __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 -+ // live on this list -+ // directory structure stuff -+ struct yaffs_ObjectStruct *parent; //my parent directory -+ struct list_head siblings; // siblings in a directory -+ // also used for linking up the free list -+ -+ // Where's my object header in NAND? -+ int chunkId; // where it lives ++ __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. ++ */ + -+ int nDataChunks; // Number of data chunks attached to the file. -+ -+ __u32 objectId; // the object id value -+ -+ -+ __u32 yst_mode; // protection ++ __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]; ++ YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1]; +#endif + +#ifndef __KERNEL__ @@ -9215,161 +10546,248 @@ index 0000000..58c52e0 + __u32 win_mtime[2]; + __u32 win_atime[2]; +#else -+ __u32 yst_uid; // user ID of owner -+ __u32 yst_gid; // group ID of owner -+ __u32 yst_atime; // time of last access -+ __u32 yst_mtime; // time of last modification -+ __u32 yst_ctime; // time of last change ++ __u32 yst_uid; ++ __u32 yst_gid; ++ __u32 yst_atime; ++ __u32 yst_mtime; ++ __u32 yst_ctime; +#endif + -+ __u32 yst_rdev; // device stuff for block and char devices -+ -+ ++ __u32 yst_rdev; + +#ifdef __KERNEL__ + struct inode *myInode; + +#endif + -+ -+ + yaffs_ObjectType variantType; -+ -+ yaffs_ObjectVariant variant; -+ -+}; + ++ yaffs_ObjectVariant variant; + ++}; + +typedef struct yaffs_ObjectStruct yaffs_Object; + -+ -+struct yaffs_ObjectList_struct -+{ ++struct yaffs_ObjectList_struct { + yaffs_Object *objects; + struct yaffs_ObjectList_struct *next; +}; + +typedef struct yaffs_ObjectList_struct yaffs_ObjectList; + -+typedef struct -+{ ++typedef struct { + struct list_head list; + int count; +} yaffs_ObjectBucket; + -+///////////////////// Temporary buffers //////////////////// -+// -+// These are chunk-sized working buffers. Each device has a few ++ ++/* 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 line; /* track from whence this buffer was allocated */ + int maxLine; +} yaffs_TempBuffer; + -+//////////////////// Device //////////////////////////////// ++/*----------------- Device ---------------------------------*/ + -+struct yaffs_DeviceStruct -+{ ++struct yaffs_DeviceStruct { + struct list_head devList; + const char *name; + -+ // Entry parameters set up way early. Yaffs sets up the rest. -+ int nBytesPerChunk; // 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. ++ /* 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. */ + -+ 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 ++ /* Stuff used by the partitioned checkpointing mechanism */ ++ int checkpointStartBlock; ++ int checkpointEndBlock; + ++ /* Stuff used by the shared space checkpointing mechanism */ ++ /* If this value is zero, then this mechanism is disabled */ + -+ void *genericDevice; // Pointer to device context -+ // On an mtd this holds the mtd pointer. ++ int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */ + -+ // 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); ++ ++ 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); ++ 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. */ + -+ // End of stuff that must be set before initialisation. ++ /* 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; + -+ // Runtime parameters. Set up by YAFFS. ++ /* 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; + -+ __u16 chunkGroupBits; // 0 for devices <= 32MB. else log2(nchunks) - 16 -+ __u16 chunkGroupSize; // == 2^^chunkGroupBits ++ /* 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); ++ 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; + -+ // Stuff to support block offsetting to support start block zero ++ int isCheckpointed; ++ ++ ++ /* Stuff to support block offsetting to support start block zero */ + int internalStartBlock; + int internalEndBlock; + int blockOffset; + int chunkOffset; + -+ // Block Info -+ yaffs_BlockInfo *blockInfo; -+ __u8 *chunkBits; // bitmap of chunks in use -+ int chunkBitmapStride; // Number of bytes of chunkBits per block. -+ // Must be consistent with nChunksPerBlock. -+ + -+ int nErasedBlocks; -+ int allocationBlock; // Current block being allocated off ++ /* 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; ++ ++ /* 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; ++ int allocationBlockFinder; /* Used to search for next allocation block */ ++ ++ /* Runtime state */ ++ int nTnodesCreated; + yaffs_Tnode *freeTnodes; -+ int nFreeTnodes; ++ int nFreeTnodes; + yaffs_TnodeList *allocatedTnodeList; + -+ int isDoingGC; ++ int isDoingGC; + -+ int nObjectsCreated; ++ int nObjectsCreated; + yaffs_Object *freeObjects; -+ int nFreeObjects; ++ 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. -+ -+ // Operations since mount ++ int nFreeChunks; ++ ++ int currentDirtyChecker; /* Used to find current dirtiest block */ ++ ++ __u32 *gcCleanupList; /* objects to delete at the end of a GC. */ ++ ++ /* Statistcs */ + int nPageWrites; + int nPageReads; + int nBlockErasures; @@ -9386,13 +10804,18 @@ index 0000000..58c52e0 + 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]; ++ */ + -+ // Buffer areas for storing data to recover from write failures -+// __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 bufferedBlock; /* Which block is buffered here? */ + int doingBufferedBlockRewrite; + + yaffs_ChunkCache *srCache; @@ -9400,133 +10823,201 @@ index 0000000..58c52e0 + + 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. -+ -+ //__u8 *localBuffer; -+ ++ /* 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 ++ ++ /* 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; + -+// 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)); ++ 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 -----------------------*/ + -+//////////// YAFFS Functions ////////////////// -+ -+int yaffs_GutsInitialise(yaffs_Device *dev); -+void yaffs_Deinitialise(yaffs_Device *dev); -+ -+int yaffs_GetNumberOfFreeChunks(yaffs_Device *dev); ++int yaffs_GutsInitialise(yaffs_Device * dev); ++void yaffs_Deinitialise(yaffs_Device * dev); + ++int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev); + -+// Rename -+int yaffs_RenameObject(yaffs_Object *oldDir, const YCHAR *oldName, yaffs_Object *newDir, const YCHAR *newName); ++int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName, ++ yaffs_Object * newDir, const YCHAR * newName); + -+// generic Object functions -+int yaffs_Unlink(yaffs_Object *dir, const YCHAR *name); -+int yaffs_DeleteFile(yaffs_Object *obj); ++int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name); ++int yaffs_DeleteFile(yaffs_Object * obj); + -+// Object access functions. -+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_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); + -+// Change inode attributes -+int yaffs_SetAttributes(yaffs_Object *obj, struct iattr *attr); -+int yaffs_GetAttributes(yaffs_Object *obj, struct iattr *attr); ++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, __u32 offset, int nBytes); -+int yaffs_WriteDataToFile(yaffs_Object *obj, const __u8 *buffer, __u32 offset, int nBytes, int writeThrough); -+int yaffs_ResizeFile(yaffs_Object *obj, int newSize); ++/* 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); ++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); + -+// 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 *)); ++int yaffs_CheckpointSave(yaffs_Device *dev); ++int yaffs_CheckpointRestore(yaffs_Device *dev); + -+yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device *dev,__u32 number); ++/* 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 *)); + -+// Link operations -+yaffs_Object *yaffs_Link(yaffs_Object *parent, const YCHAR *name, yaffs_Object *equivalentObject); ++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number); + -+yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object *obj); ++/* Link operations */ ++yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name, ++ yaffs_Object * equivalentObject); + -+// 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); ++yaffs_Object *yaffs_GetEquivalentObject(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); ++/* 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); ++/* 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]); ++/* CONFIG_YAFFS_WINCE special stuff */ ++void yfsd_WinFileTimeNow(__u32 target[2]); +#endif + +#ifdef __KERNEL__ + -+void yaffs_HandleDeferedFree(yaffs_Object *obj); ++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); + -+// Debug dump -+int yaffs_DumpObject(yaffs_Object *obj); -+ -+ -+void yaffs_GutsTest(yaffs_Device *dev); ++#endif +diff -urN linux.old/fs/yaffs2/yaffsinterface.h linux.dev/fs/yaffs2/yaffsinterface.h +--- linux.old/fs/yaffs2/yaffsinterface.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffsinterface.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,23 @@ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffsinterface.h: Interface to the guts of yaffs. ++ * ++ * Copyright (C) 2002 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__ + -+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); ++int yaffs_Initialise(unsigned nBlocks); + +#endif -+ -diff --git a/fs/yaffs/yaffs_mtdif.c b/fs/yaffs/yaffs_mtdif.c -new file mode 100644 -index 0000000..90146fb ---- /dev/null -+++ b/fs/yaffs/yaffs_mtdif.c -@@ -0,0 +1,153 @@ +diff -urN linux.old/fs/yaffs2/yaffs_mtdif2.c linux.dev/fs/yaffs2/yaffs_mtdif2.c +--- linux.old/fs/yaffs2/yaffs_mtdif2.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_mtdif2.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,234 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * yaffs_mtdif.c NAND mtd wrapper functions. @@ -9542,153 +11033,232 @@ index 0000000..90146fb + * + */ + -+const char *yaffs_mtdif_c_version = "$Id: yaffs_mtdif.c,v 1.7 2005/08/01 20:52:35 luc Exp $"; -+ ++/* mtd interface for YAFFS2 */ ++ ++const char *yaffs_mtdif2_c_version = ++ "$Id: yaffs_mtdif2.c,v 1.15 2006/11/08 06:24:34 charles Exp $"; ++ +#include "yportenv.h" + -+#ifdef CONFIG_YAFFS_YAFFS1 + -+#include "yaffs_mtdif.h" ++#include "yaffs_mtdif2.h" + +#include "linux/mtd/mtd.h" +#include "linux/types.h" +#include "linux/time.h" -+#include "linux/mtd/nand.h" -+ -+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, -+}; + ++#include "yaffs_packedtags2.h" + -+int nandmtd_WriteChunkToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_Spare *spare) ++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; -+ int retval = 0; -+ -+ loff_t addr = ((loff_t)chunkInNAND) * dev->nBytesPerChunk; -+ -+ __u8 *spareAsBytes = (__u8 *)spare; ++#endif ++ int retval = 0; + -+ if(data && spare) -+ { -+ if(dev->useNANDECC) -+ retval = mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo); -+ else -+ retval = mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo); -+ } ++ 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 -+ { -+ if(data) -+ retval = mtd->write(mtd,addr,dev->nBytesPerChunk,&dummy,data); -+ if(spare) -+ retval = mtd->write_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes); ++ 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 (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; ++ 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 nandmtd_ReadChunkFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_Spare *spare) ++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->nBytesPerChunk; -+ -+ __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->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_oobinfo); -+ } -+ else -+ { -+ retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,spareAsBytes,&yaffs_noeccinfo); -+ } ++ 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) -+ retval = mtd->read(mtd,addr,dev->nBytesPerChunk,&dummy,data); -+ if(spare) -+ retval = mtd->read_oob(mtd,addr,YAFFS_BYTES_PER_SPARE,&dummy,spareAsBytes); ++#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 + -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; -+} ++ memcpy(&pt, dev->spareBuffer, sizeof(pt)); + -+// Callback not needed for NAND -+#if 0 -+static void nandmtd_EraseCallback(struct erase_info *ei) -+{ -+ yaffs_Device *dev = (yaffs_Device *)ei->priv; -+ up(&dev->sem); -+} -+#endif ++ 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 nandmtd_EraseBlockInNAND(yaffs_Device *dev, int blockNumber) ++int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) +{ + struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice); -+ __u32 addr = ((loff_t) blockNumber) * dev->nBytesPerChunk * dev->nChunksPerBlock; -+ struct erase_info ei; -+ int retval = 0; -+ -+ ei.mtd = mtd; -+ ei.addr = addr; -+ ei.len = dev->nBytesPerChunk * 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); ++ int retval; ++ T(YAFFS_TRACE_MTD, ++ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo)); + -+ retval = mtd->erase(mtd,&ei); -+ -+ //No need for callback -+ // down(&dev->sem); // Wait for the erasure to complete ++ retval = ++ mtd->block_markbad(mtd, ++ blockNo * dev->nChunksPerBlock * ++ dev->nDataBytesPerChunk); ++ ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; + -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; +} + -+int nandmtd_InitialiseNAND(yaffs_Device *dev) ++int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo, ++ yaffs_BlockState * state, int *sequenceNumber) +{ -+ return YAFFS_OK; -+} ++ 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); + -+#endif // CONFIG_YAFFS_YAFFS1 ++ 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); + -diff --git a/fs/yaffs/yaffs_mtdif.h b/fs/yaffs/yaffs_mtdif.h -new file mode 100644 -index 0000000..8846828 ---- /dev/null -+++ b/fs/yaffs/yaffs_mtdif.h -@@ -0,0 +1,33 @@ ++ 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.old/fs/yaffs2/yaffs_mtdif2.h linux.dev/fs/yaffs2/yaffs_mtdif2.h +--- linux.old/fs/yaffs2/yaffs_mtdif2.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_mtdif2.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,29 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_mtdif.h NAND mtd interface wrappers ++ * yaffs_mtdif.c NAND mtd wrapper functions. + * + * Copyright (C) 2002 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering @@ -9696,35 +11266,29 @@ index 0000000..8846828 + * 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 ++ * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * -+ * -+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. -+ * -+ * $Id: yaffs_mtdif.h,v 1.2 2005/07/19 20:41:59 charles Exp $ + */ + -+#ifndef __YAFFS_MTDIF_H__ -+#define __YAFFS_MTDIF_H__ ++#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); + -+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 --git a/fs/yaffs/yaffs_mtdif2.c b/fs/yaffs/yaffs_mtdif2.c -new file mode 100644 -index 0000000..0c4cc39 ---- /dev/null -+++ b/fs/yaffs/yaffs_mtdif2.c -@@ -0,0 +1,177 @@ +diff -urN linux.old/fs/yaffs2/yaffs_mtdif.c linux.dev/fs/yaffs2/yaffs_mtdif.c +--- linux.old/fs/yaffs2/yaffs_mtdif.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_mtdif.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,243 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * yaffs_mtdif.c NAND mtd wrapper functions. @@ -9740,177 +11304,275 @@ index 0000000..0c4cc39 + * + */ + -+// mtd interface for YAFFS2 ++const char *yaffs_mtdif_c_version = ++ "$Id: yaffs_mtdif.c,v 1.17 2006/11/29 20:21:12 charles Exp $"; + -+const char *yaffs_mtdif2_c_version = "$Id: yaffs_mtdif2.c,v 1.6 2005/08/01 20:52:35 luc Exp $"; -+ +#include "yportenv.h" + -+#ifdef CONFIG_YAFFS_YAFFS2 + -+#include "yaffs_mtdif2.h" ++#include "yaffs_mtdif.h" + +#include "linux/mtd/mtd.h" +#include "linux/types.h" +#include "linux/time.h" ++#include "linux/mtd/nand.h" + -+#include "yaffs_packedtags2.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 nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_ExtendedTags *tags) ++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->nBytesPerChunk; -+ -+ yaffs_PackedTags2 pt; -+ -+ T(YAFFS_TRACE_MTD,(TSTR("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p" TENDSTR),chunkInNAND,data,tags)); -+ -+ if(tags) -+ { -+ yaffs_PackTags2(&pt,tags); ++ 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); + } -+ -+ if(data && tags) -+ { -+ if(dev->useNANDECC) -+ retval = mtd->write_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,(__u8 *)&pt,NULL); ++#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->nBytesPerChunk,&dummy,data,(__u8 *)&pt,NULL); -+ } -+ else -+ { -+ if(data) -+ retval = mtd->write(mtd,addr,dev->nBytesPerChunk,&dummy,data); -+ if(tags) -+ retval = mtd->write_oob(mtd,addr,mtd->oobsize,&dummy,(__u8 *)&pt); -+ ++ 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; ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; +} + -+int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *tags) ++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->nBytesPerChunk; -+ -+ yaffs_PackedTags2 pt; -+ -+ T(YAFFS_TRACE_MTD,(TSTR("nandmtd2_ReadChunkWithTagsToNAND chunk %d data %p tags %p" TENDSTR),chunkInNAND,data,tags)); ++ int retval = 0; + -+ if(data && tags) -+ { -+ if(dev->useNANDECC) -+ { -+ retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,dev->spareBuffer,NULL); -+ } -+ else -+ { -+ retval = mtd->read_ecc(mtd,addr,dev->nBytesPerChunk,&dummy,data,dev->spareBuffer,NULL); -+ } -+ memcpy(&pt,dev->spareBuffer,sizeof(pt)); -+ } -+ else -+ { -+ if(data) -+ retval = mtd->read(mtd,addr,dev->nBytesPerChunk,&dummy,data); -+ if(tags) { -+ retval = mtd->read_oob(mtd,addr,mtd->oobsize,&dummy,dev->spareBuffer); -+ memcpy(&pt, mtd->oobinfo.oobfree[0][0] + (char *)dev->spareBuffer, sizeof(pt)); ++ 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(tags) -+ yaffs_UnpackTags2(tags,&pt); -+ -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; ++ if (retval == 0) ++ return YAFFS_OK; ++ else ++ return YAFFS_FAIL; +} + -+int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo) ++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber) +{ + 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->nBytesPerChunk); ++ __u32 addr = ++ ((loff_t) blockNumber) * dev->nDataBytesPerChunk ++ * dev->nChunksPerBlock; ++ struct erase_info ei; ++ int retval = 0; + -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; ++ 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 */ + -+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->nBytesPerChunk); -+ -+ if(retval) -+ { -+ T(YAFFS_TRACE_MTD,(TSTR("block is bad" TENDSTR))); -+ -+ *state = YAFFS_BLOCK_STATE_DEAD; -+ *sequenceNumber = 0; -+ } ++ sema_init(&dev->sem, 0); ++ ++ retval = mtd->erase(mtd, &ei); ++ ++ if (retval == 0) ++ return YAFFS_OK; + 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)); ++ return YAFFS_FAIL; ++} + -+ if (retval == 0) -+ return YAFFS_OK; -+ else -+ return YAFFS_FAIL; ++int nandmtd_InitialiseNAND(yaffs_Device * dev) ++{ ++ return YAFFS_OK; +} + -+#endif +diff -urN linux.old/fs/yaffs2/yaffs_mtdif.h linux.dev/fs/yaffs2/yaffs_mtdif.h +--- linux.old/fs/yaffs2/yaffs_mtdif.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_mtdif.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,31 @@ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffs_mtdif.h NAND mtd interface wrappers ++ * ++ * Copyright (C) 2002 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. ++ * ++ * $Id: yaffs_mtdif.h,v 1.3 2005/08/11 01:07:43 marty Exp $ ++ */ + ++#ifndef __YAFFS_MTDIF_H__ ++#define __YAFFS_MTDIF_H__ + ++#include "yaffs_guts.h" + -diff --git a/fs/yaffs/yaffs_mtdif2.h b/fs/yaffs/yaffs_mtdif2.h -new file mode 100644 -index 0000000..5b308ee ---- /dev/null -+++ b/fs/yaffs/yaffs_mtdif2.h -@@ -0,0 +1,27 @@ ++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.old/fs/yaffs2/yaffs_nand.c linux.dev/fs/yaffs2/yaffs_nand.c +--- linux.old/fs/yaffs2/yaffs_nand.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_nand.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,135 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffs_mtdif.c NAND mtd wrapper functions. + * + * Copyright (C) 2002 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering @@ -9922,25 +11584,132 @@ index 0000000..5b308ee + * published by the Free Software Foundation. + * + */ ++ ++const char *yaffs_nand_c_version = ++ "$Id: yaffs_nand.c,v 1.5 2006/11/08 09:52:12 charles Exp $"; + ++#include "yaffs_nand.h" ++#include "yaffs_tagscompat.h" ++#include "yaffs_tagsvalidity.h" + -+#ifndef __YAFFS_MTDIF2_H__ -+#define __YAFFS_MTDIF2_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; + -+#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 --git a/fs/yaffs/yaffs_nandemul2k.h b/fs/yaffs/yaffs_nandemul2k.h -new file mode 100644 -index 0000000..b35d474 ---- /dev/null -+++ b/fs/yaffs/yaffs_nandemul2k.h -@@ -0,0 +1,38 @@ ++ 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.old/fs/yaffs2/yaffs_nandemul2k.h linux.dev/fs/yaffs2/yaffs_nandemul2k.h +--- linux.old/fs/yaffs2/yaffs_nandemul2k.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_nandemul2k.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,42 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * @@ -9958,37 +11727,86 @@ index 0000000..b35d474 + * + * yaffs_nandemul2k.h: Interface to emulated NAND functions (2k page size) + * -+ * $Id: yaffs_nandemul2k.h,v 1.1 2004/12/17 04:39:04 charles Exp $ ++ * $Id: yaffs_nandemul2k.h,v 1.2 2005/08/11 02:37:49 marty Exp $ + */ -+ ++ +#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); ++#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_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.old/fs/yaffs2/yaffs_nand.h linux.dev/fs/yaffs2/yaffs_nand.h +--- linux.old/fs/yaffs2/yaffs_nand.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_nand.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,43 @@ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * ++ * Copyright (C) 2002 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. ++ * ++ */ + -diff --git a/fs/yaffs/yaffs_packedtags1.c b/fs/yaffs/yaffs_packedtags1.c -new file mode 100644 -index 0000000..bab338f ---- /dev/null -+++ b/fs/yaffs/yaffs_packedtags1.c -@@ -0,0 +1,42 @@ ++#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.old/fs/yaffs2/yaffs_packedtags1.c linux.dev/fs/yaffs2/yaffs_packedtags1.c +--- linux.old/fs/yaffs2/yaffs_packedtags1.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_packedtags1.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,39 @@ +#include "yaffs_packedtags1.h" +#include "yportenv.h" + -+void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ExtendedTags *t) ++void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t) +{ + pt->chunkId = t->chunkId; + pt->serialNumber = t->serialNumber; @@ -9998,75 +11816,62 @@ index 0000000..bab338f + pt->deleted = (t->chunkDeleted) ? 0 : 1; + pt->unusedStuff = 0; + pt->shouldBeFF = 0xFFFFFFFF; -+ ++ +} + -+void yaffs_UnpackTags1(yaffs_ExtendedTags *t, const yaffs_PackedTags1 *pt) ++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))) -+ { ++ 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) -+ { ++ 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->eccResult = YAFFS_ECC_RESULT_NO_ERROR; + t->chunkDeleted = (pt->deleted) ? 0 : 1; + t->serialNumber = pt->serialNumber; -+ } -+ else -+ { -+ memset(t,0,sizeof(yaffs_ExtendedTags)); -+ ++ } else { ++ memset(t, 0, sizeof(yaffs_ExtendedTags)); ++ + } +} -+ -diff --git a/fs/yaffs/yaffs_packedtags1.h b/fs/yaffs/yaffs_packedtags1.h -new file mode 100644 -index 0000000..0f76615 ---- /dev/null -+++ b/fs/yaffs/yaffs_packedtags1.h -@@ -0,0 +1,28 @@ +diff -urN linux.old/fs/yaffs2/yaffs_packedtags1.h linux.dev/fs/yaffs2/yaffs_packedtags1.h +--- linux.old/fs/yaffs2/yaffs_packedtags1.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_packedtags1.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,22 @@ +// 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; ++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); ++void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t); ++void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt); +#endif -+ -+ -diff --git a/fs/yaffs/yaffs_packedtags2.c b/fs/yaffs/yaffs_packedtags2.c -new file mode 100644 -index 0000000..f4de18d ---- /dev/null -+++ b/fs/yaffs/yaffs_packedtags2.c -@@ -0,0 +1,164 @@ +diff -urN linux.old/fs/yaffs2/yaffs_packedtags2.c linux.dev/fs/yaffs2/yaffs_packedtags2.c +--- linux.old/fs/yaffs2/yaffs_packedtags2.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_packedtags2.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,184 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * @@ -10081,20 +11886,21 @@ index 0000000..f4de18d + * modify it under the terms of the GNU Lesser General Public License + * version 2.1 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. ++ */ + -+// 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 ++/* Extra flags applied to chunkId */ + +#define EXTRA_HEADER_INFO_FLAG 0x80000000 +#define EXTRA_SHRINK_FLAG 0x40000000 @@ -10103,125 +11909,145 @@ index 0000000..f4de18d + +#define ALL_EXTRA_FLAGS 0xF0000000 + -+ -+ -+// Also, the top 4 bits of the object Id are set to the object type. ++/* 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) ++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)); ++ 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) ++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)); -+ ++ 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) ++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 -+ pt->t.chunkId = EXTRA_HEADER_INFO_FLAG | t->extraParentObjectId; // We save the parent object in the chunkId -+ if(t->extraIsShrinkHeader) -+ { -+ pt->t.chunkId |= EXTRA_SHRINK_FLAG; ++ ++ 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; ++ 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; ++ 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); ++ { ++ yaffs_ECCCalculateOther((unsigned char *)&pt->t, ++ sizeof(yaffs_PackedTags2TagsPart), ++ &pt->ecc); + } +#endif +} + -+void yaffs_UnpackTags2(yaffs_ExtendedTags *t, yaffs_PackedTags2 *pt) ++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt) +{ + -+ -+ memset(t,0,sizeof(yaffs_ExtendedTags)); -+ ++ memset(t, 0, sizeof(yaffs_ExtendedTags)); ++ + yaffs_InitialiseTags(t); -+ -+ if(pt->t.sequenceNumber != 0xFFFFFFFF) -+ { -+ // Page is in use ++ ++ if (pt->t.sequenceNumber != 0xFFFFFFFF) { ++ /* Page is in use */ +#ifdef YAFFS_IGNORE_TAGS_ECC + { -+ t->eccResult = 0; ++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR; + } +#else + { + yaffs_ECCOther ecc; -+ yaffs_ECCCalculateOther((unsigned char *)&pt->t,sizeof(yaffs_PackedTags2TagsPart),&ecc); -+ t->eccResult = yaffs_ECCCorrectOther((unsigned char *)&pt->t,sizeof(yaffs_PackedTags2TagsPart),&pt->ecc,&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->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) -+ { ++ ++ /* 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->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; ++ ++ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) { ++ t->extraEquivalentObjectId = pt->t.byteCount; ++ } else { ++ t->extraFileLength = pt->t.byteCount; + } + } + } @@ -10230,49 +12056,224 @@ index 0000000..f4de18d + yaffs_DumpTags2(t); + +} -+ -diff --git a/fs/yaffs/yaffs_packedtags2.h b/fs/yaffs/yaffs_packedtags2.h -new file mode 100644 -index 0000000..564dd58 ---- /dev/null -+++ b/fs/yaffs/yaffs_packedtags2.h -@@ -0,0 +1,30 @@ -+// This is used to pack YAFFS2 tags, not YAFFS1tags. +diff -urN linux.old/fs/yaffs2/yaffs_packedtags2.h linux.dev/fs/yaffs2/yaffs_packedtags2.h +--- linux.old/fs/yaffs2/yaffs_packedtags2.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_packedtags2.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,23 @@ ++/* 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; ++typedef struct { ++ unsigned sequenceNumber; ++ unsigned objectId; ++ unsigned chunkId; ++ unsigned byteCount; +} yaffs_PackedTags2TagsPart; + -+typedef struct -+{ -+ yaffs_PackedTags2TagsPart t; -+ yaffs_ECCOther ecc; ++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); ++void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t); ++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt); +#endif +diff -urN linux.old/fs/yaffs2/yaffs_qsort.c linux.dev/fs/yaffs2/yaffs_qsort.c +--- linux.old/fs/yaffs2/yaffs_qsort.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_qsort.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,156 @@ ++/* ++ * 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 )); ++} + ++#define min(a,b) (((a) < (b)) ? (a) : (b)) ++void ++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; + -diff --git a/fs/yaffs/yaffs_tagscompat.c b/fs/yaffs/yaffs_tagscompat.c -new file mode 100644 -index 0000000..fdf1cbc ---- /dev/null -+++ b/fs/yaffs/yaffs_tagscompat.c -@@ -0,0 +1,698 @@ ++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) ++ 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; ++ } ++/* qsort(pn - r, r / es, es, cmp);*/ ++} +diff -urN linux.old/fs/yaffs2/yaffs_qsort.h linux.dev/fs/yaffs2/yaffs_qsort.h +--- linux.old/fs/yaffs2/yaffs_qsort.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_qsort.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,23 @@ ++/* ++ * YAFFS: Yet another FFS. A NAND-flash specific file system. ++ * yaffs_qsort.h: Interface to BSD-licensed qsort routine. ++ * ++ * Copyright (C) 2002 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. ++ * ++ * $Id: yaffs_qsort.h,v 1.2 2006/11/07 23:20:09 charles Exp $ ++ */ ++ ++#ifndef __YAFFS_QSORT_H__ ++#define __YAFFS_QSORT_H__ ++ ++extern void qsort (void *const base, size_t total_elems, size_t size, ++ int (*cmp)(const void *, const void *)); ++ ++#endif +diff -urN linux.old/fs/yaffs2/yaffs_tagscompat.c linux.dev/fs/yaffs2/yaffs_tagscompat.c +--- linux.old/fs/yaffs2/yaffs_tagscompat.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_tagscompat.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,532 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * yaffs_tagscompat.h: Tags compatability layer to use YAFFS1 formatted NAND. @@ -10285,40 +12286,41 @@ index 0000000..fdf1cbc + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_tagscompat.c,v 1.3 2005/07/31 06:47:12 marty Exp $ ++ * $Id: yaffs_tagscompat.c,v 1.8 2005/11/29 20:54:32 marty Exp $ + */ + +#include "yaffs_guts.h" +#include "yaffs_tagscompat.h" +#include "yaffs_ecc.h" + -+static void yaffs_HandleReadDataError(yaffs_Device *dev,int chunkInNAND); ++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 ++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 +}; + +static int yaffs_CountBits(__u8 x) @@ -10328,33 +12330,29 @@ index 0000000..fdf1cbc + return retVal; +} + ++/********** Tags ECC calculations *********/ + -+/////////////// Tags ECC calculations /////////////////// -+ -+void yaffs_CalcECC(const __u8 *data, yaffs_Spare *spare) ++void yaffs_CalcECC(const __u8 * data, yaffs_Spare * spare) +{ -+ yaffs_ECCCalculate(data , spare->ecc1); -+ yaffs_ECCCalculate(&data[256] , spare->ecc2); ++ yaffs_ECCCalculate(data, spare->ecc1); ++ yaffs_ECCCalculate(&data[256], spare->ecc2); +} + -+void yaffs_CalcTagsECC(yaffs_Tags *tags) ++void yaffs_CalcTagsECC(yaffs_Tags * tags) +{ -+ // Calculate an ecc ++ /* Calculate an ecc */ + -+ unsigned char *b = ((yaffs_TagsUnion *)tags)->asBytes; -+ unsigned i,j; -+ unsigned ecc = 0; ++ 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) -+ { ++ for (i = 0; i < 8; i++) { ++ for (j = 1; j & 0xff; j <<= 1) { + bit++; -+ if(b[i] & j) -+ { ++ if (b[i] & j) { + ecc ^= bit; + } + } @@ -10362,49 +12360,46 @@ index 0000000..fdf1cbc + + tags->ecc = ecc; + -+ +} + -+int yaffs_CheckECCOnTags(yaffs_Tags *tags) ++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; ++ ++ 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 ++ /* 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 1; /* recovered error */ ++ } else if (ecc) { ++ /* Wierd ecc failure value */ ++ /* TODO Need to do somethiong here */ ++ return -1; /* unrecovered error */ + } + + return 0; +} + -+//////////////////////////// Tags /////////////////////////////////////// ++/********** Tags **********/ + -+static void yaffs_LoadTagsIntoSpare(yaffs_Spare *sparePtr, yaffs_Tags *tagsPtr) ++static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr, ++ yaffs_Tags * tagsPtr) +{ -+ yaffs_TagsUnion *tu = (yaffs_TagsUnion *)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]; @@ -10415,568 +12410,406 @@ index 0000000..fdf1cbc + sparePtr->tagByte7 = tu->asBytes[7]; +} + -+static void yaffs_GetTagsFromSpare(yaffs_Device *dev, yaffs_Spare *sparePtr,yaffs_Tags *tagsPtr) ++static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr, ++ yaffs_Tags * tagsPtr) +{ -+ yaffs_TagsUnion *tu = (yaffs_TagsUnion *)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) -+ { ++ 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) -+ { ++ } else if (result < 0) { + dev->tagsEccUnfixed++; + } +} + -+static void yaffs_SpareInitialise(yaffs_Spare *spare) ++static void yaffs_SpareInitialise(yaffs_Spare * spare) +{ -+ memset(spare,0xFF,sizeof(yaffs_Spare)); ++ memset(spare, 0xFF, sizeof(yaffs_Spare)); +} + -+ -+ -+ -+static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev,int chunkInNAND, const __u8 *data, yaffs_Spare *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)); ++ 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); ++ 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 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 ++ 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("**>>ecc error fix performed on chunk %d:0" TENDSTR),chunkInNAND)); ++ 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("**>>ecc error unfixed on chunk %d:0" TENDSTR),chunkInNAND)); ++ } 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("**>>ecc error fix performed on chunk %d:1" TENDSTR),chunkInNAND)); ++ 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("**>>ecc error unfixed on chunk %d:1" TENDSTR),chunkInNAND)); ++ } else if (eccResult2 < 0) { ++ T(YAFFS_TRACE_ERROR, ++ (TSTR ++ ("**>>yaffs ecc error unfixed on chunk %d:1" ++ TENDSTR), chunkInNAND)); + dev->eccUnfixed++; + } + -+ if(eccResult1 || eccResult2) -+ { -+ // Hoosterman, we had a data problem on this page -+ yaffs_HandleReadDataError(dev,chunkInNAND); ++ if (eccResult1 || eccResult2) { ++ /* We had a data problem on this page */ ++ yaffs_HandleReadDataError(dev, chunkInNAND); + } -+ -+ if(eccResult1 < 0 || eccResult2 < 0) ++ ++ if (eccResult1 < 0 || eccResult2 < 0) + *eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ else if(eccResult1 > 0 || eccResult2 > 0) ++ 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("**>>ecc error fix performed on chunk %d:0" TENDSTR),chunkInNAND)); -+ } -+ else if(nspare.eccres1<0) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>>ecc error unfixed on chunk %d:0" TENDSTR),chunkInNAND)); ++ } 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("**>>ecc error fix performed on chunk %d:1" TENDSTR),chunkInNAND)); -+ } -+ else if(nspare.eccres2<0) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>>ecc error unfixed on chunk %d:1" 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) -+ { -+ // Hoosterman, we had a data problem on this page -+ yaffs_HandleReadDataError(dev,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) ++ ++ if (nspare.eccres1 < 0 || nspare.eccres2 < 0) + *eccResult = YAFFS_ECC_RESULT_UNFIXED; -+ else if(nspare.eccres1 > 0 || nspare.eccres2 > 0) ++ 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 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; ++ /* 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); ++ dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare); + -+ if(!init) -+ { -+ memset(cmpbuf,0xff,YAFFS_BYTES_PER_CHUNK); ++ 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; -+ ++ if (memcmp(cmpbuf, data, YAFFS_BYTES_PER_CHUNK)) ++ return YAFFS_FAIL; ++ if (memcmp(cmpbuf, spare, 16)) ++ return YAFFS_FAIL; + + return YAFFS_OK; + +} +#endif + -+#if 0 -+int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,int blockInNAND) -+{ -+ dev->nBlockErasures++; -+ return dev->eraseBlockInNAND(dev,blockInNAND); -+} -+ -+int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev) -+{ -+ return dev->initialiseNAND(dev); -+} -+ -+#endif -+ -+#if 0 -+static int yaffs_WriteNewChunkToNAND(struct yaffs_DeviceStruct *dev, const __u8 *data, yaffs_Spare *spare,int useReserve) -+{ -+ int chunk; -+ -+ int writeOk = 1; -+ int attempts = 0; -+ -+ unsigned char rbData[YAFFS_BYTES_PER_CHUNK]; -+ yaffs_Spare rbSpare; -+ -+ do{ -+ chunk = yaffs_AllocateChunk(dev,useReserve); -+ -+ if(chunk >= 0) -+ { -+ -+ // First check this chunk is erased... -+#ifndef CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK -+ writeOk = yaffs_CheckChunkErased(dev,chunk); -+#endif -+ if(!writeOk) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>> yaffs chunk %d was not erased" TENDSTR),chunk)); -+ } -+ else -+ { -+ writeOk = yaffs_WriteChunkToNAND(dev,chunk,data,spare); -+ } -+ attempts++; -+ if(writeOk) -+ { -+ // Readback & verify -+ // If verify fails, then delete this chunk and try again -+ // To verify we compare everything except the block and -+ // page status bytes. -+ // NB We check a raw read without ECC correction applied -+ yaffs_ReadChunkFromNAND(dev,chunk,rbData,&rbSpare,0); -+ -+#ifndef CONFIG_YAFFS_DISABLE_WRITE_VERIFY -+ if(!yaffs_VerifyCompare(data,rbData,spare,&rbSpare)) -+ { -+ // Didn't verify -+ T(YAFFS_TRACE_ERROR,(TSTR("**>> yaffs write verify failed on chunk %d" TENDSTR), chunk)); -+ -+ writeOk = 0; -+ } -+#endif -+ -+ } -+ if(writeOk) -+ { -+ // Copy the data into the write buffer. -+ // NB We do this at the end to prevent duplicates in the case of a write error. -+ //Todo -+ yaffs_HandleWriteChunkOk(dev,chunk,data,spare); -+ } -+ else -+ { -+ yaffs_HandleWriteChunkError(dev,chunk); -+ } -+ } -+ -+ } while(chunk >= 0 && ! writeOk); -+ -+ if(attempts > 1) -+ { -+ T(YAFFS_TRACE_ERROR,(TSTR("**>> yaffs write required %d attempts" TENDSTR),attempts)); -+ dev->nRetriedWrites+= (attempts - 1); -+ } -+ -+ return chunk; -+} -+ -+#endif -+ -+/// -+// Functions for robustisizing -+// -+// -+#if 0 -+ -+static void yaffs_RetireBlock(yaffs_Device *dev,int blockInNAND) -+{ -+ // Ding the blockStatus in the first two pages of the block. -+ -+ yaffs_Spare spare; -+ -+ memset(&spare, 0xff,sizeof(yaffs_Spare)); -+ -+ spare.blockStatus = 0; -+ -+ // TODO change this retirement marking for other NAND types -+ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL , &spare); -+ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1, NULL , &spare); -+ -+ yaffs_GetBlockInfo(dev,blockInNAND)->blockState = YAFFS_BLOCK_STATE_DEAD; -+ dev->nRetiredBlocks++; -+} -+ -+#endif -+ -+#if 0 -+static int yaffs_RewriteBufferedBlock(yaffs_Device *dev) -+{ -+ dev->doingBufferedBlockRewrite = 1; -+ // -+ // Remove erased chunks -+ // Rewrite existing chunks to a new block -+ // Set current write block to the new block -+ -+ dev->doingBufferedBlockRewrite = 0; -+ -+ return 1; -+} -+ -+#endif ++/* ++ * Functions for robustisizing ++ */ + -+static void yaffs_HandleReadDataError(yaffs_Device *dev,int chunkInNAND) ++static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND) +{ -+ int blockInNAND = chunkInNAND/dev->nChunksPerBlock; ++ 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)); ++ /* 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 ++ /* 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_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_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_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND, ++ const yaffs_Spare * spare) +{ +} + -+static void yaffs_HandleWriteChunkError(yaffs_Device *dev,int chunkInNAND) ++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND) +{ -+ int blockInNAND = chunkInNAND/dev->nChunksPerBlock; ++ 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__); ++ /* 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) ++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; -+ } ++ 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 */ ++#endif /* NOTYET */ + -+#if 0 -+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 -+ unsigned byteCount; // Only valid for data chunks -+ // The following stuff only has meaning when we read -+ yaffs_ECCResult eccResult; // Only valid when we read. -+ unsigned blockBad; // Only valid on reading -+ -+ // 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 -+ -+ unsigned validMarker1; -+ -+} yaffs_ExtendedTags; -+ -+ -+typedef struct -+{ -+ unsigned chunkId:20; -+ unsigned serialNumber:2; -+ unsigned byteCount:10; -+ unsigned objectId:18; -+ unsigned ecc:12; -+ unsigned unusedStuff:2; -+} yaffs_Tags; -+ -+ -+#endif -+ -+int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device *dev,int chunkInNAND,const __u8 *data, const yaffs_ExtendedTags *eTags) ++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ const __u8 * data, ++ const yaffs_ExtendedTags * ++ eTags) +{ + yaffs_Spare spare; -+ yaffs_Tags tags; -+ ++ yaffs_Tags tags; ++ + yaffs_SpareInitialise(&spare); -+ -+ if(eTags->chunkDeleted) -+ { ++ ++ if (eTags->chunkDeleted) { + spare.pageStatus = 0; -+ } -+ else -+ { ++ } else { + tags.objectId = eTags->objectId; + tags.chunkId = eTags->chunkId; + tags.byteCount = eTags->byteCount; + tags.serialNumber = eTags->serialNumber; -+ -+// NCB -+ if (!dev->useNANDECC && data) -+ { -+ yaffs_CalcECC(data,&spare); ++ ++ if (!dev->useNANDECC && data) { ++ yaffs_CalcECC(data, &spare); + } ++ yaffs_LoadTagsIntoSpare(&spare, &tags); + -+// /NCB -+ yaffs_LoadTagsIntoSpare(&spare,&tags); -+ + } -+ -+ return yaffs_WriteChunkToNAND(dev,chunkInNAND,data,&spare); -+} + ++ return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare); ++} + -+int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device *dev,int chunkInNAND, __u8 *data, yaffs_ExtendedTags *eTags) ++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev, ++ int chunkInNAND, ++ __u8 * data, ++ yaffs_ExtendedTags * eTags) +{ + + yaffs_Spare spare; + yaffs_Tags tags; + yaffs_ECCResult eccResult; -+ -+// NCB -+ static yaffs_Spare spareFF; -+ static int init; -+ -+ if(!init) -+ { -+ memset(&spareFF,0xFF,sizeof(spareFF)); -+ init = 1; -+ } -+// /NCB -+ if(yaffs_ReadChunkFromNAND(dev,chunkInNAND,data,&spare,&eccResult,1)) -+ { -+// added NCB - eTags may be NULL ++ ++ 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; -+ -+ yaffs_GetTagsFromSpare(dev,&spare,&tags); -+ -+ eTags->chunkDeleted = deleted; -+ eTags->objectId = tags.objectId; -+ eTags->chunkId = tags.chunkId; -+ eTags->byteCount = tags.byteCount; -+ eTags->serialNumber = tags.serialNumber; -+ eTags->eccResult = eccResult; -+ eTags->blockBad = 0; // We're reading it therefore it is not a bad block -+ -+// NCB added 18/2/2005 -+ eTags->chunkUsed = (memcmp(&spareFF,&spare,sizeof(spareFF)) != 0) ? 1:0; ++ 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_OK; ++ } else { + return YAFFS_FAIL; + } +} + -+int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockInNAND) ++int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev, ++ int blockInNAND) +{ + + yaffs_Spare spare; + -+ memset(&spare, 0xff,sizeof(yaffs_Spare)); ++ memset(&spare, 0xff, sizeof(yaffs_Spare)); + -+ spare.blockStatus = 0; ++ spare.blockStatus = 'Y'; ++ ++ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL, ++ &spare); ++ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1, ++ NULL, &spare); + -+ 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; + -+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 --git a/fs/yaffs/yaffs_tagscompat.h b/fs/yaffs/yaffs_tagscompat.h -new file mode 100644 -index 0000000..20b627f ---- /dev/null -+++ b/fs/yaffs/yaffs_tagscompat.h -@@ -0,0 +1,30 @@ ++ return YAFFS_OK; ++} +diff -urN linux.old/fs/yaffs2/yaffs_tagscompat.h linux.dev/fs/yaffs2/yaffs_tagscompat.h +--- linux.old/fs/yaffs2/yaffs_tagscompat.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_tagscompat.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,40 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. + * yaffs_ramdisk.h: yaffs ram disk component @@ -10989,30 +12822,38 @@ index 0000000..20b627f + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_tagscompat.h,v 1.1 2004/11/03 08:14:07 charles Exp $ ++ * $Id: yaffs_tagscompat.h,v 1.2 2005/08/11 02:33:03 marty Exp $ + */ + -+// This provides a rma disk under yaffs. -+// NB this is not intended for NAND emulation. -+// Use this with dev->useNANDECC enabled, then ECC overheads are not required. -+ ++/* This provides a ram disk under yaffs. ++ * NB this is not intended for NAND emulation. ++ * Use this with dev->useNANDECC enabled, then ECC overheads are not required. ++ */ +#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); -+ -+#endif -diff --git a/fs/yaffs/yaffs_tagsvalidity.c b/fs/yaffs/yaffs_tagsvalidity.c -new file mode 100644 -index 0000000..2cbbeaa ---- /dev/null -+++ b/fs/yaffs/yaffs_tagsvalidity.c -@@ -0,0 +1,35 @@ ++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); ++ ++#endif +diff -urN linux.old/fs/yaffs2/yaffs_tagsvalidity.c linux.dev/fs/yaffs2/yaffs_tagsvalidity.c +--- linux.old/fs/yaffs2/yaffs_tagsvalidity.c 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_tagsvalidity.c 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,31 @@ + +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. @@ -11026,34 +12867,28 @@ index 0000000..2cbbeaa + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_tagsvalidity.c,v 1.1 2005/04/29 18:09:16 charles Exp $ ++ * $Id: yaffs_tagsvalidity.c,v 1.2 2005/08/11 02:33:03 marty Exp $ + */ -+//yaffs_tagsvalidity.c + +#include "yaffs_tagsvalidity.h" + -+ -+ -+void yaffs_InitialiseTags(yaffs_ExtendedTags *tags) ++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags) +{ -+ memset(tags,0,sizeof(yaffs_ExtendedTags)); ++ memset(tags, 0, sizeof(yaffs_ExtendedTags)); + tags->validMarker0 = 0xAAAAAAAA; + tags->validMarker1 = 0x55555555; +} + -+int yaffs_ValidateTags(yaffs_ExtendedTags *tags) ++int yaffs_ValidateTags(yaffs_ExtendedTags * tags) +{ + return (tags->validMarker0 == 0xAAAAAAAA && + tags->validMarker1 == 0x55555555); + +} -+ -diff --git a/fs/yaffs/yaffs_tagsvalidity.h b/fs/yaffs/yaffs_tagsvalidity.h -new file mode 100644 -index 0000000..26673d1 ---- /dev/null -+++ b/fs/yaffs/yaffs_tagsvalidity.h -@@ -0,0 +1,27 @@ +diff -urN linux.old/fs/yaffs2/yaffs_tagsvalidity.h linux.dev/fs/yaffs2/yaffs_tagsvalidity.h +--- linux.old/fs/yaffs2/yaffs_tagsvalidity.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yaffs_tagsvalidity.h 2006-12-14 04:21:47.000000000 +0100 +@@ -0,0 +1,25 @@ + +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. @@ -11067,56 +12902,21 @@ index 0000000..26673d1 + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * -+ * $Id: yaffs_tagsvalidity.h,v 1.1 2005/04/29 18:09:16 charles Exp $ ++ * $Id: yaffs_tagsvalidity.h,v 1.2 2005/08/11 02:33:03 marty Exp $ + */ +//yaffs_tagsvalidity.h + -+ +#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 --git a/fs/yaffs/yaffsinterface.h b/fs/yaffs/yaffsinterface.h -new file mode 100644 -index 0000000..e4b0ff1 ---- /dev/null -+++ b/fs/yaffs/yaffsinterface.h -@@ -0,0 +1,25 @@ -+/* -+ * YAFFS: Yet another FFS. A NAND-flash specific file system. -+ * yaffsinterface.h: Interface to the guts of yaffs. -+ * -+ * Copyright (C) 2002 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); -+ ++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags); ++int yaffs_ValidateTags(yaffs_ExtendedTags * tags); +#endif -+ -diff --git a/fs/yaffs/yportenv.h b/fs/yaffs/yportenv.h -new file mode 100644 -index 0000000..13c63bb ---- /dev/null -+++ b/fs/yaffs/yportenv.h +diff -urN linux.old/fs/yaffs2/yportenv.h linux.dev/fs/yaffs2/yportenv.h +--- linux.old/fs/yaffs2/yportenv.h 1970-01-01 01:00:00.000000000 +0100 ++++ linux.dev/fs/yaffs2/yportenv.h 2006-12-14 04:26:06.000000000 +0100 @@ -0,0 +1,165 @@ +/* + * YAFFS: Yet another FFS. A NAND-flash specific file system. @@ -11135,29 +12935,29 @@ index 0000000..13c63bb + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + * -+ * $Id: yportenv.h,v 1.6 2005/07/31 00:26:57 charles Exp $ ++ * $Id: yportenv.h,v 1.11 2006/05/21 09:39:12 charles Exp $ + * + */ -+ ++ +#ifndef __YPORTENV_H__ +#define __YPORTENV_H__ + -+ +#if defined CONFIG_YAFFS_WINCE + +#include "ywinceenv.h" + +#elif defined __KERNEL__ + ++#include "moduleconfig.h" + -+ -+// Linux kernel -+#include <linux/config.h> ++/* Linux kernel */ ++#include <linux/autoconf.h> +#include <linux/kernel.h> +#include <linux/version.h> +#include <linux/mm.h> +#include <linux/string.h> +#include <linux/slab.h> ++#include <linux/vmalloc.h> + +#define YCHAR char +#define YUCHAR unsigned char @@ -11173,9 +12973,15 @@ index 0000000..13c63bb +#define YAFFS_LOSTNFOUND_NAME "lost+found" +#define YAFFS_LOSTNFOUND_PREFIX "obj" + -+//#define YPRINTF(x) printk x ++/* #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 @@ -11195,15 +13001,14 @@ index 0000000..13c63bb +#define TSTR(x) KERN_WARNING x +#define TOUT(p) printk p + -+ +#elif defined CONFIG_YAFFS_DIRECT + -+// Direct interface ++/* Direct interface */ +#include "ydirectenv.h" + +#elif defined CONFIG_YAFFS_UTIL + -+// Stuff for YAFFS utilities ++/* Stuff for YAFFS utilities */ + +#include "stdlib.h" +#include "stdio.h" @@ -11213,7 +13018,8 @@ index 0000000..13c63bb + +#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 @@ -11226,19 +13032,16 @@ index 0000000..13c63bb + +#define Y_INLINE inline + -+//#define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) -+//#define YALERT(s) YINFO(s) -+ ++/* #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 YPRINTF(x) printf x */ + +#define YAFFS_ROOT_MODE 0666 +#define YAFFS_LOSTNFOUND_MODE 0666 @@ -11247,11 +13050,10 @@ index 0000000..13c63bb +#define yaffs_strcmp(a,b) strcmp(a,b) + +#else -+// Should have specified a configuration type ++/* Should have specified a configuration type */ +#error Unknown configuration + -+#endif -+ ++#endif + +extern unsigned yaffs_traceMask; + @@ -11270,17 +13072,14 @@ index 0000000..13c63bb +#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_ALWAYS 0x40000000 +#define YAFFS_TRACE_BUG 0x80000000 + -+#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ERROR)) TOUT(p);} while(0) -+ ++#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ERROR)) TOUT(p);} while(0) + +#ifndef CONFIG_YAFFS_WINCE +#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__)) +#endif + +#endif -+ -+ - |