Root/target/linux/generic/patches-3.7/902-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))
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))
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))
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@@ -1224,10 +1224,12 @@ 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@@ -4478,9 +4478,11 @@ 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@@ -4489,9 +4491,11 @@ 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@@ -4501,8 +4505,10 @@ 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@@ -2773,6 +2773,8 @@ 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@@ -2607,10 +2607,12 @@ 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@@ -2629,8 +2631,10 @@ 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/igmp.c
259+++ b/net/ipv4/igmp.c
260@@ -2673,6 +2673,8 @@ static struct pernet_operations igmp_net
261 
262 int __init igmp_mc_proc_init(void)
263 {
264+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
265+ return 0;
266     return register_pernet_subsys(&igmp_net_ops);
267 }
268 #endif
269--- a/net/ipv4/ipmr.c
270+++ b/net/ipv4/ipmr.c
271@@ -70,6 +70,10 @@
272 #define CONFIG_IP_PIMSM 1
273 #endif
274 
275+#ifdef CONFIG_PROC_STRIPPED
276+#undef CONFIG_PROC_FS
277+#endif
278+
279 struct mr_table {
280     struct list_head list;
281 #ifdef CONFIG_NET_NS
282--- a/net/ipv4/proc.c
283+++ b/net/ipv4/proc.c
284@@ -502,6 +502,9 @@ static __net_initdata struct pernet_oper
285 
286 int __init ip_misc_proc_init(void)
287 {
288+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
289+ return 0;
290+
291     return register_pernet_subsys(&ip_proc_ops);
292 }
293 
294--- a/net/ipv4/route.c
295+++ b/net/ipv4/route.c
296@@ -427,6 +427,9 @@ static struct pernet_operations ip_rt_pr
297 
298 static int __init ip_rt_proc_init(void)
299 {
300+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
301+ return 0;
302+
303     return register_pernet_subsys(&ip_rt_proc_ops);
304 }
305 
306--- a/ipc/msg.c
307+++ b/ipc/msg.c
308@@ -135,6 +135,9 @@ void __init msg_init(void)
309     printk(KERN_INFO "msgmni has been set to %d\n",
310         init_ipc_ns.msg_ctlmni);
311 
312+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
313+ return;
314+
315     ipc_init_proc_interface("sysvipc/msg",
316                 " key msqid perms cbytes qnum lspid lrpid uid gid cuid cgid stime rtime ctime\n",
317                 IPC_MSG_IDS, sysvipc_msg_proc_show);
318--- a/ipc/sem.c
319+++ b/ipc/sem.c
320@@ -185,6 +185,8 @@ void sem_exit_ns(struct ipc_namespace *n
321 void __init sem_init (void)
322 {
323     sem_init_ns(&init_ipc_ns);
324+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
325+ return;
326     ipc_init_proc_interface("sysvipc/sem",
327                 " key semid perms nsems uid gid cuid cgid otime ctime\n",
328                 IPC_SEM_IDS, sysvipc_sem_proc_show);
329--- a/ipc/shm.c
330+++ b/ipc/shm.c
331@@ -115,6 +115,8 @@ pure_initcall(ipc_ns_init);
332 
333 void __init shm_init (void)
334 {
335+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
336+ return;
337     ipc_init_proc_interface("sysvipc/shm",
338 #if BITS_PER_LONG <= 32
339                 " key shmid perms size cpid lpid nattch uid gid cuid cgid atime dtime ctime rss swap\n",
340--- a/ipc/util.c
341+++ b/ipc/util.c
342@@ -148,6 +148,9 @@ void __init ipc_init_proc_interface(cons
343     struct proc_dir_entry *pde;
344     struct ipc_proc_iface *iface;
345 
346+ if (IS_ENABLED(CONFIG_PROC_STRIPPED))
347+ return;
348+
349     iface = kmalloc(sizeof(*iface), GFP_KERNEL);
350     if (!iface)
351         return;
352

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