3ac9914fa2fd49f05bc8a0d9a0035dc03acd0e30
[openwrt/svn-archive/archive.git] / target / linux / generic / patches-3.8 / 902-debloat_proc.patch
1 --- a/fs/locks.c
2 +++ b/fs/locks.c
3 @@ -2267,6 +2267,8 @@ static const struct file_operations proc
4
5 static int __init proc_locks_init(void)
6 {
7 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
8 + return 0;
9 proc_create("locks", 0, NULL, &proc_locks_operations);
10 return 0;
11 }
12 --- a/fs/proc/Kconfig
13 +++ b/fs/proc/Kconfig
14 @@ -67,3 +67,8 @@ config PROC_PAGE_MONITOR
15 /proc/pid/smaps, /proc/pid/clear_refs, /proc/pid/pagemap,
16 /proc/kpagecount, and /proc/kpageflags. Disabling these
17 interfaces will reduce the size of the kernel by approximately 4kb.
18 +
19 +config PROC_STRIPPED
20 + default n
21 + depends on EXPERT
22 + bool "Strip non-essential /proc functionality to reduce code size"
23 --- a/fs/proc/consoles.c
24 +++ b/fs/proc/consoles.c
25 @@ -108,6 +108,9 @@ static const struct file_operations proc
26
27 static int __init proc_consoles_init(void)
28 {
29 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
30 + return 0;
31 +
32 proc_create("consoles", 0, NULL, &proc_consoles_operations);
33 return 0;
34 }
35 --- a/fs/proc/proc_tty.c
36 +++ b/fs/proc/proc_tty.c
37 @@ -143,7 +143,10 @@ static const struct file_operations proc
38 void proc_tty_register_driver(struct tty_driver *driver)
39 {
40 struct proc_dir_entry *ent;
41 -
42 +
43 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
44 + return;
45 +
46 if (!driver->driver_name || driver->proc_entry ||
47 !driver->ops->proc_fops)
48 return;
49 @@ -160,6 +163,9 @@ void proc_tty_unregister_driver(struct t
50 {
51 struct proc_dir_entry *ent;
52
53 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
54 + return;
55 +
56 ent = driver->proc_entry;
57 if (!ent)
58 return;
59 @@ -174,6 +180,9 @@ void proc_tty_unregister_driver(struct t
60 */
61 void __init proc_tty_init(void)
62 {
63 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
64 + return;
65 +
66 if (!proc_mkdir("tty", NULL))
67 return;
68 proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL);
69 --- a/kernel/exec_domain.c
70 +++ b/kernel/exec_domain.c
71 @@ -173,6 +173,8 @@ static const struct file_operations exec
72
73 static int __init proc_execdomains_init(void)
74 {
75 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
76 + return 0;
77 proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
78 return 0;
79 }
80 --- a/kernel/irq/proc.c
81 +++ b/kernel/irq/proc.c
82 @@ -311,6 +311,9 @@ void register_irq_proc(unsigned int irq,
83 {
84 char name [MAX_NAMELEN];
85
86 + if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
87 + return;
88 +
89 if (!root_irq_dir || (desc->irq_data.chip == &no_irq_chip) || desc->dir)
90 return;
91
92 @@ -347,6 +350,9 @@ void unregister_irq_proc(unsigned int ir
93 {
94 char name [MAX_NAMELEN];
95
96 + if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
97 + return;
98 +
99 if (!root_irq_dir || !desc->dir)
100 return;
101 #ifdef CONFIG_SMP
102 @@ -386,6 +392,9 @@ void init_irq_proc(void)
103 unsigned int irq;
104 struct irq_desc *desc;
105
106 + if (IS_ENABLED(CONFIG_PROC_STRIPPED) && !IS_ENABLED(CONFIG_SMP))
107 + return;
108 +
109 /* create /proc/irq */
110 root_irq_dir = proc_mkdir("irq", NULL);
111 if (!root_irq_dir)
112 --- a/kernel/time/timer_list.c
113 +++ b/kernel/time/timer_list.c
114 @@ -293,6 +293,8 @@ static int __init init_timer_list_procfs
115 {
116 struct proc_dir_entry *pe;
117
118 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
119 + return 0;
120 pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
121 if (!pe)
122 return -ENOMEM;
123 --- a/mm/vmalloc.c
124 +++ b/mm/vmalloc.c
125 @@ -2638,6 +2638,8 @@ static const struct file_operations proc
126
127 static int __init proc_vmalloc_init(void)
128 {
129 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
130 + return 0;
131 proc_create("vmallocinfo", S_IRUSR, NULL, &proc_vmalloc_operations);
132 return 0;
133 }
134 --- a/mm/vmstat.c
135 +++ b/mm/vmstat.c
136 @@ -1238,10 +1238,12 @@ static int __init setup_vmstat(void)
137 start_cpu_timer(cpu);
138 #endif
139 #ifdef CONFIG_PROC_FS
140 - proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
141 - proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
142 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
143 + proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
144 + proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
145 + proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
146 + }
147 proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
148 - proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
149 #endif
150 return 0;
151 }
152 --- a/net/8021q/vlanproc.c
153 +++ b/net/8021q/vlanproc.c
154 @@ -127,6 +127,9 @@ void vlan_proc_cleanup(struct net *net)
155 {
156 struct vlan_net *vn = net_generic(net, vlan_net_id);
157
158 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
159 + return;
160 +
161 if (vn->proc_vlan_conf)
162 remove_proc_entry(name_conf, vn->proc_vlan_dir);
163
164 @@ -146,6 +149,9 @@ int __net_init vlan_proc_init(struct net
165 {
166 struct vlan_net *vn = net_generic(net, vlan_net_id);
167
168 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
169 + return 0;
170 +
171 vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
172 if (!vn->proc_vlan_dir)
173 goto err;
174 --- a/net/core/dev.c
175 +++ b/net/core/dev.c
176 @@ -4588,9 +4588,11 @@ static int __net_init dev_proc_net_init(
177
178 if (!proc_net_fops_create(net, "dev", S_IRUGO, &dev_seq_fops))
179 goto out;
180 - if (!proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
181 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
182 + !proc_net_fops_create(net, "softnet_stat", S_IRUGO, &softnet_seq_fops))
183 goto out_dev;
184 - if (!proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
185 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
186 + !proc_net_fops_create(net, "ptype", S_IRUGO, &ptype_seq_fops))
187 goto out_softnet;
188
189 if (wext_proc_init(net))
190 @@ -4599,9 +4601,11 @@ static int __net_init dev_proc_net_init(
191 out:
192 return rc;
193 out_ptype:
194 - proc_net_remove(net, "ptype");
195 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
196 + proc_net_remove(net, "ptype");
197 out_softnet:
198 - proc_net_remove(net, "softnet_stat");
199 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED))
200 + proc_net_remove(net, "softnet_stat");
201 out_dev:
202 proc_net_remove(net, "dev");
203 goto out;
204 @@ -4611,8 +4615,10 @@ static void __net_exit dev_proc_net_exit
205 {
206 wext_proc_exit(net);
207
208 - proc_net_remove(net, "ptype");
209 - proc_net_remove(net, "softnet_stat");
210 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
211 + proc_net_remove(net, "ptype");
212 + proc_net_remove(net, "softnet_stat");
213 + }
214 proc_net_remove(net, "dev");
215 }
216
217 --- a/net/core/sock.c
218 +++ b/net/core/sock.c
219 @@ -2837,6 +2837,8 @@ static __net_initdata struct pernet_oper
220
221 static int __init proto_init(void)
222 {
223 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
224 + return 0;
225 return register_pernet_subsys(&proto_net_ops);
226 }
227
228 --- a/net/ipv4/fib_trie.c
229 +++ b/net/ipv4/fib_trie.c
230 @@ -2608,10 +2608,12 @@ static const struct file_operations fib_
231
232 int __net_init fib_proc_init(struct net *net)
233 {
234 - if (!proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
235 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
236 + !proc_net_fops_create(net, "fib_trie", S_IRUGO, &fib_trie_fops))
237 goto out1;
238
239 - if (!proc_net_fops_create(net, "fib_triestat", S_IRUGO,
240 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED) &&
241 + !proc_net_fops_create(net, "fib_triestat", S_IRUGO,
242 &fib_triestat_fops))
243 goto out2;
244
245 @@ -2630,8 +2632,10 @@ out1:
246
247 void __net_exit fib_proc_exit(struct net *net)
248 {
249 - proc_net_remove(net, "fib_trie");
250 - proc_net_remove(net, "fib_triestat");
251 + if (!IS_ENABLED(CONFIG_PROC_STRIPPED)) {
252 + proc_net_remove(net, "fib_trie");
253 + proc_net_remove(net, "fib_triestat");
254 + }
255 proc_net_remove(net, "route");
256 }
257
258 --- a/net/ipv4/proc.c
259 +++ b/net/ipv4/proc.c
260 @@ -502,6 +502,9 @@ static __net_initdata struct pernet_oper
261
262 int __init ip_misc_proc_init(void)
263 {
264 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
265 + return 0;
266 +
267 return register_pernet_subsys(&ip_proc_ops);
268 }
269
270 --- a/net/ipv4/route.c
271 +++ b/net/ipv4/route.c
272 @@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
273
274 static int __init ip_rt_proc_init(void)
275 {
276 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
277 + return 0;
278 +
279 return register_pernet_subsys(&ip_rt_proc_ops);
280 }
281
282 --- a/ipc/msg.c
283 +++ b/ipc/msg.c
284 @@ -135,6 +135,9 @@ void __init msg_init(void)
285 printk(KERN_INFO "msgmni has been set to %d\n",
286 init_ipc_ns.msg_ctlmni);
287
288 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
289 + return;
290 +
291 ipc_init_proc_interface("sysvipc/msg",
292 " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
293 IPC_MSG_IDS, sysvipc_msg_proc_show);
294 --- a/ipc/sem.c
295 +++ b/ipc/sem.c
296 @@ -185,6 +185,8 @@ void sem_exit_ns(struct ipc_namespace *n
297 void __init sem_init (void)
298 {
299 sem_init_ns(&init_ipc_ns);
300 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
301 + return;
302 ipc_init_proc_interface("sysvipc/sem",
303 " key semid perms nsems uid gid cuid cgid otime ctime\n",
304 IPC_SEM_IDS, sysvipc_sem_proc_show);
305 --- a/ipc/shm.c
306 +++ b/ipc/shm.c
307 @@ -115,6 +115,8 @@ pure_initcall(ipc_ns_init);
308
309 void __init shm_init (void)
310 {
311 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
312 + return;
313 ipc_init_proc_interface("sysvipc/shm",
314 #if BITS_PER_LONG <= 32
315 " key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",
316 --- a/ipc/util.c
317 +++ b/ipc/util.c
318 @@ -149,6 +149,9 @@ void __init ipc_init_proc_interface(cons
319 struct proc_dir_entry *pde;
320 struct ipc_proc_iface *iface;
321
322 + if (IS_ENABLED(CONFIG_PROC_STRIPPED))
323 + return;
324 +
325 iface = kmalloc(sizeof(*iface), GFP_KERNEL);
326 if (!iface)
327 return;