328 lines
9.1 KiB
Diff
328 lines
9.1 KiB
Diff
--- a/fs/locks.c
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+++ b/fs/locks.c
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@@ -2267,6 +2267,8 @@ static const struct file_operations proc
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static int __init proc_locks_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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proc_create("locks", 0, NULL, &proc_locks_operations);
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return 0;
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}
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--- a/fs/proc/Kconfig
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+++ b/fs/proc/Kconfig
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@@ -67,3 +67,8 @@ config PROC_PAGE_MONITOR
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/proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
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/proc/kpagecount, and /proc/kpageflags. Disabling these
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interfaces will reduce the size of the kernel by approximately 4kb.
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+
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+config PROC_STRIPPED
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+ default n
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+ depends on EXPERT
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+ bool "Strip non-essential /proc functionality to reduce code size"
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--- a/fs/proc/consoles.c
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+++ b/fs/proc/consoles.c
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@@ -108,6 +108,9 @@ static const struct file_operations proc
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static int __init proc_consoles_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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+
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proc_create("consoles", 0, NULL, &proc_consoles_operations);
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return 0;
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}
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--- a/fs/proc/proc_tty.c
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+++ b/fs/proc/proc_tty.c
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@@ -143,7 +143,10 @@ static const struct file_operations proc
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void proc_tty_register_driver(struct tty_driver *driver)
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{
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struct proc_dir_entry *ent;
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-
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+
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (!driver->driver_name || driver->proc_entry ||
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!driver->ops->proc_fops)
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return;
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@@ -160,6 +163,9 @@ void proc_tty_unregister_driver(struct t
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{
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struct proc_dir_entry *ent;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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ent = driver->proc_entry;
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if (!ent)
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return;
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@@ -174,6 +180,9 @@ void proc_tty_unregister_driver(struct t
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*/
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void __init proc_tty_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (!proc_mkdir("tty", NULL))
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return;
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proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);
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--- a/kernel/exec_domain.c
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+++ b/kernel/exec_domain.c
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@@ -173,6 +173,8 @@ static const struct file_operations exec
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static int __init proc_execdomains_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
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return 0;
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}
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--- a/kernel/irq/proc.c
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+++ b/kernel/irq/proc.c
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@@ -311,6 +311,9 @@ void register_irq_proc(unsigned int irq,
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{
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char name [MAX_NAMELEN];
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
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+ return;
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+
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if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
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return;
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@@ -347,6 +350,9 @@ void unregister_irq_proc(unsigned int ir
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{
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char name [MAX_NAMELEN];
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
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+ return;
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+
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if (!root_irq_dir || !desc->dir)
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return;
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#ifdef CONFIG_SMP
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@@ -386,6 +392,9 @@ void init_irq_proc(void)
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unsigned int irq;
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struct irq_desc *desc;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
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+ return;
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+
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/* create /proc/irq */
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root_irq_dir = proc_mkdir("irq", NULL);
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if (!root_irq_dir)
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--- a/kernel/time/timer_list.c
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+++ b/kernel/time/timer_list.c
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@@ -293,6 +293,8 @@ static int __init init_timer_list_procfs
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{
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struct proc_dir_entry *pe;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
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if (!pe)
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return -ENOMEM;
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--- a/mm/vmalloc.c
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+++ b/mm/vmalloc.c
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@@ -2638,6 +2638,8 @@ static const struct file_operations proc
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static int __init proc_vmalloc_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
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return 0;
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}
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--- a/mm/vmstat.c
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+++ b/mm/vmstat.c
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@@ -1238,10 +1238,12 @@ static int __init setup_vmstat(void)
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start_cpu_timer(cpu);
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#endif
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#ifdef CONFIG_PROC_FS
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- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
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- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
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+ proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
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+ proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
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+ }
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proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
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- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
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#endif
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return 0;
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}
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--- a/net/8021q/vlanproc.c
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+++ b/net/8021q/vlanproc.c
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@@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net)
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{
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struct vlan_net *vn = net_generic(net, vlan_net_id);
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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if (vn->proc_vlan_conf)
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remove_proc_entry(name_conf, vn->proc_vlan_dir);
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@@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net
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{
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struct vlan_net *vn = net_generic(net, vlan_net_id);
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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+
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vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
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if (!vn->proc_vlan_dir)
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goto err;
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--- a/net/core/dev.c
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+++ b/net/core/dev.c
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@@ -4588,9 +4588,11 @@ static int __net_init dev_proc_net_init(
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if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
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goto out;
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- if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
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goto out_dev;
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- if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
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goto out_softnet;
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if (wext_proc_init(net))
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@@ -4599,9 +4601,11 @@ static int __net_init dev_proc_net_init(
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out:
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return rc;
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out_ptype:
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- proc_net_remove(net, "ptype");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ proc_net_remove(net, "ptype");
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out_softnet:
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- proc_net_remove(net, "softnet_stat");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ proc_net_remove(net, "softnet_stat");
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out_dev:
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proc_net_remove(net, "dev");
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goto out;
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@@ -4611,8 +4615,10 @@ static void __net_exit dev_proc_net_exit
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{
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wext_proc_exit(net);
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- proc_net_remove(net, "ptype");
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- proc_net_remove(net, "softnet_stat");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ proc_net_remove(net, "ptype");
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+ proc_net_remove(net, "softnet_stat");
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+ }
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proc_net_remove(net, "dev");
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}
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--- a/net/core/sock.c
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+++ b/net/core/sock.c
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@@ -2837,6 +2837,8 @@ static __net_initdata struct pernet_oper
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static int __init proto_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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return register_pernet_subsys(&proto_net_ops);
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}
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--- a/net/ipv4/fib_trie.c
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+++ b/net/ipv4/fib_trie.c
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@@ -2608,10 +2608,12 @@ static const struct file_operations fib_
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int __net_init fib_proc_init(struct net *net)
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{
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- if (!proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
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goto out1;
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- if (!proc_net_fops_create(net, "fib_triestat", S_IRUGO,
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_net_fops_create(net, "fib_triestat", S_IRUGO,
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&fib_triestat_fops))
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goto out2;
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@@ -2630,8 +2632,10 @@ out1:
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void __net_exit fib_proc_exit(struct net *net)
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{
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- proc_net_remove(net, "fib_trie");
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- proc_net_remove(net, "fib_triestat");
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ proc_net_remove(net, "fib_trie");
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+ proc_net_remove(net, "fib_triestat");
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+ }
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proc_net_remove(net, "route");
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}
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--- a/net/ipv4/proc.c
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+++ b/net/ipv4/proc.c
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@@ -502,6 +502,9 @@ static __net_initdata struct pernet_oper
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int __init ip_misc_proc_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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+
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return register_pernet_subsys(&ip_proc_ops);
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}
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--- a/net/ipv4/route.c
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+++ b/net/ipv4/route.c
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@@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
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static int __init ip_rt_proc_init(void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return 0;
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+
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return register_pernet_subsys(&ip_rt_proc_ops);
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}
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--- a/ipc/msg.c
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+++ b/ipc/msg.c
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@@ -135,6 +135,9 @@ void __init msg_init(void)
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printk(KERN_INFO "msgmni has been set to %d\n",
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init_ipc_ns.msg_ctlmni);
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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ipc_init_proc_interface("sysvipc/msg",
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" key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
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IPC_MSG_IDS, sysvipc_msg_proc_show);
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--- a/ipc/sem.c
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+++ b/ipc/sem.c
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@@ -185,6 +185,8 @@ void sem_exit_ns(struct ipc_namespace *n
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void __init sem_init (void)
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{
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sem_init_ns(&init_ipc_ns);
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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ipc_init_proc_interface("sysvipc/sem",
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" key semid perms nsems uid gid cuid cgid otime ctime\n",
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IPC_SEM_IDS, sysvipc_sem_proc_show);
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--- a/ipc/shm.c
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+++ b/ipc/shm.c
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@@ -115,6 +115,8 @@ pure_initcall(ipc_ns_init);
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void __init shm_init (void)
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{
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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ipc_init_proc_interface("sysvipc/shm",
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#if BITS_PER_LONG <= 32
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" key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",
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--- a/ipc/util.c
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+++ b/ipc/util.c
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@@ -149,6 +149,9 @@ void __init ipc_init_proc_interface(cons
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struct proc_dir_entry *pde;
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struct ipc_proc_iface *iface;
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+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ return;
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+
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iface = kmalloc(sizeof(*iface), GFP_KERNEL);
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if (!iface)
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return;
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