diff options
Diffstat (limited to 'target/linux/generic/patches-4.1/902-debloat_proc.patch')
| -rw-r--r-- | target/linux/generic/patches-4.1/902-debloat_proc.patch | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.1/902-debloat_proc.patch b/target/linux/generic/patches-4.1/902-debloat_proc.patch new file mode 100644 index 0000000000..fef538254c --- /dev/null +++ b/target/linux/generic/patches-4.1/902-debloat_proc.patch @@ -0,0 +1,341 @@ +--- a/fs/locks.c ++++ b/fs/locks.c +@@ -2676,6 +2676,8 @@ static const struct file_operations proc + + static int __init proc_locks_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; + proc_create("locks", 0, NULL, &proc_locks_operations); + return 0; + } +--- a/fs/proc/Kconfig ++++ b/fs/proc/Kconfig +@@ -71,3 +71,8 @@ config PROC_PAGE_MONITOR + /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap, + /proc/kpagecount, and /proc/kpageflags. Disabling these + interfaces will reduce the size of the kernel by approximately 4kb. ++ ++config PROC_STRIPPED ++ default n ++ depends on EXPERT ++ bool "Strip non-essential /proc functionality to reduce code size" +--- a/fs/proc/consoles.c ++++ b/fs/proc/consoles.c +@@ -106,6 +106,9 @@ static const struct file_operations proc + + static int __init proc_consoles_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; ++ + proc_create("consoles", 0, NULL, &proc_consoles_operations); + return 0; + } +--- a/fs/proc/proc_tty.c ++++ b/fs/proc/proc_tty.c +@@ -143,7 +143,10 @@ static const struct file_operations proc + void proc_tty_register_driver(struct tty_driver *driver) + { + struct proc_dir_entry *ent; +- ++ ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; ++ + if (!driver->driver_name || driver->proc_entry || + !driver->ops->proc_fops) + return; +@@ -160,6 +163,9 @@ void proc_tty_unregister_driver(struct t + { + struct proc_dir_entry *ent; + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; ++ + ent = driver->proc_entry; + if (!ent) + return; +@@ -174,6 +180,9 @@ void proc_tty_unregister_driver(struct t + */ + void __init proc_tty_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; ++ + if (!proc_mkdir("tty", NULL)) + return; + proc_mkdir("tty/ldisc", NULL); /* Preserved: it's userspace visible */ +--- a/kernel/exec_domain.c ++++ b/kernel/exec_domain.c +@@ -41,6 +41,8 @@ static const struct file_operations exec + + static int __init proc_execdomains_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; + proc_create("execdomains", 0, NULL, &execdomains_proc_fops); + return 0; + } +--- a/kernel/irq/proc.c ++++ b/kernel/irq/proc.c +@@ -325,6 +325,9 @@ void register_irq_proc(unsigned int irq, + { + char name [MAX_NAMELEN]; + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP)) ++ return; ++ + if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir) + return; + +@@ -361,6 +364,9 @@ void unregister_irq_proc(unsigned int ir + { + char name [MAX_NAMELEN]; + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP)) ++ return; ++ + if (!root_irq_dir || !desc->dir) + return; + #ifdef CONFIG_SMP +@@ -396,6 +402,9 @@ void init_irq_proc(void) + unsigned int irq; + struct irq_desc *desc; + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP)) ++ return; ++ + /* create /proc/irq */ + root_irq_dir = proc_mkdir("irq", NULL); + if (!root_irq_dir) +--- a/kernel/time/timer_list.c ++++ b/kernel/time/timer_list.c +@@ -388,6 +388,8 @@ static int __init init_timer_list_procfs + { + struct proc_dir_entry *pe; + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; + pe = proc_create("timer_list", 0444, NULL, &timer_list_fops); + if (!pe) + return -ENOMEM; +--- a/mm/vmalloc.c ++++ b/mm/vmalloc.c +@@ -2683,6 +2683,8 @@ static const struct file_operations proc + + static int __init proc_vmalloc_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; + proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations); + return 0; + } +--- a/mm/vmstat.c ++++ b/mm/vmstat.c +@@ -1528,10 +1528,12 @@ static int __init setup_vmstat(void) + cpu_notifier_register_done(); + #endif + #ifdef CONFIG_PROC_FS +- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations); +- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) { ++ proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations); ++ proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops); ++ proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations); ++ } + proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations); +- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations); + #endif + return 0; + } +--- a/net/8021q/vlanproc.c ++++ b/net/8021q/vlanproc.c +@@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net) + { + struct vlan_net *vn = net_generic(net, vlan_net_id); + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; ++ + if (vn->proc_vlan_conf) + remove_proc_entry(name_conf, vn->proc_vlan_dir); + +@@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net + { + struct vlan_net *vn = net_generic(net, vlan_net_id); + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; ++ + vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net); + if (!vn->proc_vlan_dir) + goto err; +--- a/net/core/sock.c ++++ b/net/core/sock.c +@@ -2971,6 +2971,8 @@ static __net_initdata struct pernet_oper + + static int __init proto_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; + return register_pernet_subsys(&proto_net_ops); + } + +--- a/net/ipv4/fib_trie.c ++++ b/net/ipv4/fib_trie.c +@@ -2630,10 +2630,12 @@ static const struct file_operations fib_ + + int __net_init fib_proc_init(struct net *net) + { +- if (!proc_create("fib_trie", S_IRUGO, net->proc_net, &fib_trie_fops)) ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) && ++ !proc_create("fib_trie", S_IRUGO, net->proc_net, &fib_trie_fops)) + goto out1; + +- if (!proc_create("fib_triestat", S_IRUGO, net->proc_net, ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) && ++ !proc_create("fib_triestat", S_IRUGO, net->proc_net, + &fib_triestat_fops)) + goto out2; + +@@ -2643,17 +2645,21 @@ int __net_init fib_proc_init(struct net + return 0; + + out3: +- remove_proc_entry("fib_triestat", net->proc_net); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ remove_proc_entry("fib_triestat", net->proc_net); + out2: +- remove_proc_entry("fib_trie", net->proc_net); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ remove_proc_entry("fib_trie", net->proc_net); + out1: + return -ENOMEM; + } + + void __net_exit fib_proc_exit(struct net *net) + { +- remove_proc_entry("fib_trie", net->proc_net); +- remove_proc_entry("fib_triestat", net->proc_net); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) { ++ remove_proc_entry("fib_trie", net->proc_net); ++ remove_proc_entry("fib_triestat", net->proc_net); ++ } + remove_proc_entry("route", net->proc_net); + } + +--- a/net/ipv4/proc.c ++++ b/net/ipv4/proc.c +@@ -535,6 +535,9 @@ static __net_initdata struct pernet_oper + + int __init ip_misc_proc_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; ++ + return register_pernet_subsys(&ip_proc_ops); + } + +--- a/net/ipv4/route.c ++++ b/net/ipv4/route.c +@@ -415,6 +415,9 @@ static struct pernet_operations ip_rt_pr + + static int __init ip_rt_proc_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return 0; ++ + return register_pernet_subsys(&ip_rt_proc_ops); + } + +--- a/ipc/msg.c ++++ b/ipc/msg.c +@@ -1040,6 +1040,9 @@ void __init msg_init(void) + { + msg_init_ns(&init_ipc_ns); + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; ++ + ipc_init_proc_interface("sysvipc/msg", + " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n", + IPC_MSG_IDS, sysvipc_msg_proc_show); +--- a/ipc/sem.c ++++ b/ipc/sem.c +@@ -191,6 +191,8 @@ void sem_exit_ns(struct ipc_namespace *n + void __init sem_init(void) + { + sem_init_ns(&init_ipc_ns); ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; + ipc_init_proc_interface("sysvipc/sem", + " key semid perms nsems uid gid cuid cgid otime ctime\n", + IPC_SEM_IDS, sysvipc_sem_proc_show); +--- a/ipc/shm.c ++++ b/ipc/shm.c +@@ -118,6 +118,8 @@ pure_initcall(ipc_ns_init); + + void __init shm_init(void) + { ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; + ipc_init_proc_interface("sysvipc/shm", + #if BITS_PER_LONG <= 32 + " key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n", +--- a/ipc/util.c ++++ b/ipc/util.c +@@ -121,6 +121,9 @@ void __init ipc_init_proc_interface(cons + struct proc_dir_entry *pde; + struct ipc_proc_iface *iface; + ++ if (IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ return; ++ + iface = kmalloc(sizeof(*iface), GFP_KERNEL); + if (!iface) + return; +--- a/net/core/net-procfs.c ++++ b/net/core/net-procfs.c +@@ -318,10 +318,12 @@ static int __net_init dev_proc_net_init( + + if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops)) + goto out; +- if (!proc_create("softnet_stat", S_IRUGO, net->proc_net, ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) && ++ !proc_create("softnet_stat", S_IRUGO, net->proc_net, + &softnet_seq_fops)) + goto out_dev; +- if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops)) ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) && ++ !proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops)) + goto out_softnet; + + if (wext_proc_init(net)) +@@ -330,9 +332,11 @@ static int __net_init dev_proc_net_init( + out: + return rc; + out_ptype: +- remove_proc_entry("ptype", net->proc_net); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ remove_proc_entry("ptype", net->proc_net); + out_softnet: +- remove_proc_entry("softnet_stat", net->proc_net); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) ++ remove_proc_entry("softnet_stat", net->proc_net); + out_dev: + remove_proc_entry("dev", net->proc_net); + goto out; +@@ -342,8 +346,10 @@ static void __net_exit dev_proc_net_exit + { + wext_proc_exit(net); + +- remove_proc_entry("ptype", net->proc_net); +- remove_proc_entry("softnet_stat", net->proc_net); ++ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) { ++ remove_proc_entry("ptype", net->proc_net); ++ remove_proc_entry("softnet_stat", net->proc_net); ++ } + remove_proc_entry("dev", net->proc_net); + } + |