386 lines
11 KiB
Diff
386 lines
11 KiB
Diff
--- a/fs/locks.c
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+++ b/fs/locks.c
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@@ -2712,6 +2712,8 @@ 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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@@ -81,3 +81,8 @@ config PROC_CHILDREN
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Say Y if you are running any user-space software which takes benefit from
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this interface. For example, rkt is such a piece of software.
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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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@@ -106,6 +106,9 @@ 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_mkdir("tty/ldisc", NULL); /* Preserved: it's userspace visible */
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--- a/kernel/exec_domain.c
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+++ b/kernel/exec_domain.c
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@@ -41,6 +41,8 @@ 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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@@ -327,6 +327,9 @@ void register_irq_proc(unsigned int irq,
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static DEFINE_MUTEX(register_lock);
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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))
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return;
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@@ -376,6 +379,9 @@ 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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@@ -411,6 +417,9 @@ 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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@@ -393,6 +393,8 @@ 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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@@ -2684,6 +2684,8 @@ 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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@@ -1553,10 +1553,12 @@ static int __init setup_vmstat(void)
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cpu_notifier_register_done();
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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/sock.c
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+++ b/net/core/sock.c
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@@ -3035,6 +3035,8 @@ 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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@@ -2646,10 +2646,12 @@ 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_create("fib_trie", S_IRUGO, net->proc_net, &fib_trie_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_create("fib_trie", S_IRUGO, net->proc_net, &fib_trie_fops))
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goto out1;
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- if (!proc_create("fib_triestat", S_IRUGO, net->proc_net,
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_create("fib_triestat", S_IRUGO, net->proc_net,
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&fib_triestat_fops))
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goto out2;
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@@ -2659,17 +2661,21 @@ int __net_init fib_proc_init(struct net
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return 0;
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out3:
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- remove_proc_entry("fib_triestat", net->proc_net);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ remove_proc_entry("fib_triestat", net->proc_net);
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out2:
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- remove_proc_entry("fib_trie", net->proc_net);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ remove_proc_entry("fib_trie", net->proc_net);
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out1:
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return -ENOMEM;
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}
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void __net_exit fib_proc_exit(struct net *net)
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{
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- remove_proc_entry("fib_trie", net->proc_net);
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- remove_proc_entry("fib_triestat", net->proc_net);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ remove_proc_entry("fib_trie", net->proc_net);
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+ remove_proc_entry("fib_triestat", net->proc_net);
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+ }
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remove_proc_entry("route", net->proc_net);
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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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@@ -539,6 +539,9 @@ 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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@@ -420,6 +420,9 @@ 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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@@ -1068,6 +1068,9 @@ void __init msg_init(void)
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{
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msg_init_ns(&init_ipc_ns);
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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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@@ -191,6 +191,8 @@ 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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@@ -118,6 +118,8 @@ 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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@@ -121,6 +121,9 @@ 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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--- a/net/core/net-procfs.c
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+++ b/net/core/net-procfs.c
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@@ -318,10 +318,12 @@ static int __net_init dev_proc_net_init(
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if (!proc_create("dev", S_IRUGO, net->proc_net, &dev_seq_fops))
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goto out;
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- if (!proc_create("softnet_stat", S_IRUGO, net->proc_net,
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_create("softnet_stat", S_IRUGO, net->proc_net,
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&softnet_seq_fops))
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goto out_dev;
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- if (!proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
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+ !proc_create("ptype", S_IRUGO, net->proc_net, &ptype_seq_fops))
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goto out_softnet;
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if (wext_proc_init(net))
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@@ -330,9 +332,11 @@ 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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- remove_proc_entry("ptype", net->proc_net);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ remove_proc_entry("ptype", net->proc_net);
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out_softnet:
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- remove_proc_entry("softnet_stat", net->proc_net);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
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+ remove_proc_entry("softnet_stat", net->proc_net);
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out_dev:
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remove_proc_entry("dev", net->proc_net);
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goto out;
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@@ -342,8 +346,10 @@ static void __net_exit dev_proc_net_exit
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{
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wext_proc_exit(net);
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- remove_proc_entry("ptype", net->proc_net);
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- remove_proc_entry("softnet_stat", net->proc_net);
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+ if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
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+ remove_proc_entry("ptype", net->proc_net);
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+ remove_proc_entry("softnet_stat", net->proc_net);
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+ }
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remove_proc_entry("dev", net->proc_net);
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}
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--- a/include/net/snmp.h
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+++ b/include/net/snmp.h
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@@ -123,6 +123,30 @@ struct linux_xfrm_mib {
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#define DECLARE_SNMP_STAT(type, name) \
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extern __typeof__(type) __percpu *name
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+#ifdef CONFIG_PROC_STRIPPED
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+#define SNMP_INC_STATS_BH(mib, field) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_INC_STATS_USER(mib, field) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_INC_STATS_ATOMIC_LONG(mib, field) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_INC_STATS(mib, field) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_DEC_STATS(mib, field) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_ADD_STATS_BH(mib, field, addend) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_ADD_STATS_USER(mib, field, addend) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_ADD_STATS(mib, field, addend) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_UPD_PO_STATS(mib, basefield, addend) \
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+ do { (void) mib->mibs[0]; } while(0)
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+#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend) \
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+ do { (void) mib->mibs[0]; } while(0)
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+
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+#else
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+
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#define SNMP_INC_STATS_BH(mib, field) \
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__this_cpu_inc(mib->mibs[field])
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@@ -159,8 +183,9 @@ struct linux_xfrm_mib {
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__this_cpu_add(ptr[basefield##OCTETS], addend); \
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} while (0)
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+#endif
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-#if BITS_PER_LONG==32
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+#if (BITS_PER_LONG==32) && !defined(CONFIG_PROC_STRIPPED)
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#define SNMP_ADD_STATS64_BH(mib, field, addend) \
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do { \
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