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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * sysctl.c: General linux system control interface | |
3 | * | |
4 | * Begun 24 March 1995, Stephen Tweedie | |
5 | * Added /proc support, Dec 1995 | |
6 | * Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas. | |
7 | * Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver. | |
8 | * Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver. | |
9 | * Dynamic registration fixes, Stephen Tweedie. | |
10 | * Added kswapd-interval, ctrl-alt-del, printk stuff, 1/8/97, Chris Horn. | |
11 | * Made sysctl support optional via CONFIG_SYSCTL, 1/10/97, Chris | |
12 | * Horn. | |
13 | * Added proc_doulongvec_ms_jiffies_minmax, 09/08/99, Carlos H. Bauer. | |
14 | * Added proc_doulongvec_minmax, 09/08/99, Carlos H. Bauer. | |
15 | * Changed linked lists to use list.h instead of lists.h, 02/24/00, Bill | |
16 | * Wendling. | |
17 | * The list_for_each() macro wasn't appropriate for the sysctl loop. | |
18 | * Removed it and replaced it with older style, 03/23/00, Bill Wendling | |
19 | */ | |
20 | ||
1da177e4 LT |
21 | #include <linux/module.h> |
22 | #include <linux/mm.h> | |
23 | #include <linux/swap.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/sysctl.h> | |
5a04cca6 | 26 | #include <linux/bitmap.h> |
d33ed52d | 27 | #include <linux/signal.h> |
455cd5ab | 28 | #include <linux/printk.h> |
1da177e4 | 29 | #include <linux/proc_fs.h> |
72c2d582 | 30 | #include <linux/security.h> |
1da177e4 | 31 | #include <linux/ctype.h> |
dfec072e | 32 | #include <linux/kmemcheck.h> |
fd4b616b | 33 | #include <linux/kmemleak.h> |
62239ac2 | 34 | #include <linux/fs.h> |
1da177e4 LT |
35 | #include <linux/init.h> |
36 | #include <linux/kernel.h> | |
0296b228 | 37 | #include <linux/kobject.h> |
20380731 | 38 | #include <linux/net.h> |
1da177e4 LT |
39 | #include <linux/sysrq.h> |
40 | #include <linux/highuid.h> | |
41 | #include <linux/writeback.h> | |
3fff4c42 | 42 | #include <linux/ratelimit.h> |
76ab0f53 | 43 | #include <linux/compaction.h> |
1da177e4 | 44 | #include <linux/hugetlb.h> |
1da177e4 | 45 | #include <linux/initrd.h> |
0b77f5bf | 46 | #include <linux/key.h> |
1da177e4 LT |
47 | #include <linux/times.h> |
48 | #include <linux/limits.h> | |
49 | #include <linux/dcache.h> | |
6e006701 | 50 | #include <linux/dnotify.h> |
1da177e4 | 51 | #include <linux/syscalls.h> |
c748e134 | 52 | #include <linux/vmstat.h> |
c255d844 PM |
53 | #include <linux/nfs_fs.h> |
54 | #include <linux/acpi.h> | |
10a0a8d4 | 55 | #include <linux/reboot.h> |
b0fc494f | 56 | #include <linux/ftrace.h> |
cdd6c482 | 57 | #include <linux/perf_event.h> |
b2be84df | 58 | #include <linux/kprobes.h> |
b492e95b | 59 | #include <linux/pipe_fs_i.h> |
8e4228e1 | 60 | #include <linux/oom.h> |
17f60a7d | 61 | #include <linux/kmod.h> |
73efc039 | 62 | #include <linux/capability.h> |
40401530 | 63 | #include <linux/binfmts.h> |
1da177e4 LT |
64 | |
65 | #include <asm/uaccess.h> | |
66 | #include <asm/processor.h> | |
67 | ||
29cbc78b AK |
68 | #ifdef CONFIG_X86 |
69 | #include <asm/nmi.h> | |
0741f4d2 | 70 | #include <asm/stacktrace.h> |
6e7c4025 | 71 | #include <asm/io.h> |
29cbc78b | 72 | #endif |
d550bbd4 DH |
73 | #ifdef CONFIG_SPARC |
74 | #include <asm/setup.h> | |
75 | #endif | |
c55b7c3e DY |
76 | #ifdef CONFIG_BSD_PROCESS_ACCT |
77 | #include <linux/acct.h> | |
78 | #endif | |
4f0e056f DY |
79 | #ifdef CONFIG_RT_MUTEXES |
80 | #include <linux/rtmutex.h> | |
81 | #endif | |
2edf5e49 DY |
82 | #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT) |
83 | #include <linux/lockdep.h> | |
84 | #endif | |
15485a46 DY |
85 | #ifdef CONFIG_CHR_DEV_SG |
86 | #include <scsi/sg.h> | |
87 | #endif | |
29cbc78b | 88 | |
58687acb | 89 | #ifdef CONFIG_LOCKUP_DETECTOR |
504d7cf1 DZ |
90 | #include <linux/nmi.h> |
91 | #endif | |
92 | ||
7058cb02 | 93 | |
1da177e4 LT |
94 | #if defined(CONFIG_SYSCTL) |
95 | ||
96 | /* External variables not in a header file. */ | |
1da177e4 LT |
97 | extern int sysctl_overcommit_memory; |
98 | extern int sysctl_overcommit_ratio; | |
99 | extern int max_threads; | |
d6e71144 | 100 | extern int suid_dumpable; |
046d662f AK |
101 | #ifdef CONFIG_COREDUMP |
102 | extern int core_uses_pid; | |
1da177e4 | 103 | extern char core_pattern[]; |
a293980c | 104 | extern unsigned int core_pipe_limit; |
046d662f | 105 | #endif |
1da177e4 LT |
106 | extern int pid_max; |
107 | extern int min_free_kbytes; | |
1da177e4 | 108 | extern int pid_max_min, pid_max_max; |
9d0243bc | 109 | extern int sysctl_drop_caches; |
8ad4b1fb | 110 | extern int percpu_pagelist_fraction; |
bebfa101 | 111 | extern int compat_log; |
9745512c | 112 | extern int latencytop_enabled; |
eceea0b3 | 113 | extern int sysctl_nr_open_min, sysctl_nr_open_max; |
dd8632a1 PM |
114 | #ifndef CONFIG_MMU |
115 | extern int sysctl_nr_trim_pages; | |
116 | #endif | |
cb684b5b | 117 | #ifdef CONFIG_BLOCK |
5e605b64 | 118 | extern int blk_iopoll_enabled; |
cb684b5b | 119 | #endif |
1da177e4 | 120 | |
c4f3b63f | 121 | /* Constants used for minimum and maximum */ |
2508ce18 | 122 | #ifdef CONFIG_LOCKUP_DETECTOR |
c4f3b63f | 123 | static int sixty = 60; |
9383d967 | 124 | static int neg_one = -1; |
c4f3b63f RT |
125 | #endif |
126 | ||
c4f3b63f | 127 | static int zero; |
cd5f9a4c LT |
128 | static int __maybe_unused one = 1; |
129 | static int __maybe_unused two = 2; | |
cb16e95f | 130 | static int __maybe_unused three = 3; |
fc3501d4 | 131 | static unsigned long one_ul = 1; |
c4f3b63f | 132 | static int one_hundred = 100; |
af91322e DY |
133 | #ifdef CONFIG_PRINTK |
134 | static int ten_thousand = 10000; | |
135 | #endif | |
c4f3b63f | 136 | |
9e4a5bda AR |
137 | /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */ |
138 | static unsigned long dirty_bytes_min = 2 * PAGE_SIZE; | |
139 | ||
1da177e4 LT |
140 | /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */ |
141 | static int maxolduid = 65535; | |
142 | static int minolduid; | |
8ad4b1fb | 143 | static int min_percpu_pagelist_fract = 8; |
1da177e4 LT |
144 | |
145 | static int ngroups_max = NGROUPS_MAX; | |
73efc039 | 146 | static const int cap_last_cap = CAP_LAST_CAP; |
1da177e4 | 147 | |
d14f1729 DY |
148 | #ifdef CONFIG_INOTIFY_USER |
149 | #include <linux/inotify.h> | |
150 | #endif | |
72c57ed5 | 151 | #ifdef CONFIG_SPARC |
1da177e4 LT |
152 | #endif |
153 | ||
0871420f DM |
154 | #ifdef CONFIG_SPARC64 |
155 | extern int sysctl_tsb_ratio; | |
156 | #endif | |
157 | ||
1da177e4 LT |
158 | #ifdef __hppa__ |
159 | extern int pwrsw_enabled; | |
160 | extern int unaligned_enabled; | |
161 | #endif | |
1da177e4 | 162 | |
d2b176ed JS |
163 | #ifdef CONFIG_IA64 |
164 | extern int no_unaligned_warning; | |
88fc241f | 165 | extern int unaligned_dump_stack; |
d2b176ed JS |
166 | #endif |
167 | ||
d6f8ff73 | 168 | #ifdef CONFIG_PROC_SYSCTL |
8d65af78 | 169 | static int proc_do_cad_pid(struct ctl_table *table, int write, |
9ec52099 | 170 | void __user *buffer, size_t *lenp, loff_t *ppos); |
8d65af78 | 171 | static int proc_taint(struct ctl_table *table, int write, |
34f5a398 | 172 | void __user *buffer, size_t *lenp, loff_t *ppos); |
d6f8ff73 | 173 | #endif |
9ec52099 | 174 | |
bfdc0b49 | 175 | #ifdef CONFIG_PRINTK |
620f6e8e | 176 | static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
bfdc0b49 RW |
177 | void __user *buffer, size_t *lenp, loff_t *ppos); |
178 | #endif | |
179 | ||
54b50199 KC |
180 | static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, |
181 | void __user *buffer, size_t *lenp, loff_t *ppos); | |
046d662f | 182 | #ifdef CONFIG_COREDUMP |
54b50199 KC |
183 | static int proc_dostring_coredump(struct ctl_table *table, int write, |
184 | void __user *buffer, size_t *lenp, loff_t *ppos); | |
046d662f | 185 | #endif |
54b50199 | 186 | |
97f5f0cd | 187 | #ifdef CONFIG_MAGIC_SYSRQ |
8c6a98b2 AW |
188 | /* Note: sysrq code uses it's own private copy */ |
189 | static int __sysrq_enabled = SYSRQ_DEFAULT_ENABLE; | |
97f5f0cd DT |
190 | |
191 | static int sysrq_sysctl_handler(ctl_table *table, int write, | |
192 | void __user *buffer, size_t *lenp, | |
193 | loff_t *ppos) | |
194 | { | |
195 | int error; | |
196 | ||
197 | error = proc_dointvec(table, write, buffer, lenp, ppos); | |
198 | if (error) | |
199 | return error; | |
200 | ||
201 | if (write) | |
202 | sysrq_toggle_support(__sysrq_enabled); | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | #endif | |
208 | ||
d8217f07 EB |
209 | static struct ctl_table kern_table[]; |
210 | static struct ctl_table vm_table[]; | |
211 | static struct ctl_table fs_table[]; | |
212 | static struct ctl_table debug_table[]; | |
213 | static struct ctl_table dev_table[]; | |
214 | extern struct ctl_table random_table[]; | |
7ef9964e DL |
215 | #ifdef CONFIG_EPOLL |
216 | extern struct ctl_table epoll_table[]; | |
217 | #endif | |
1da177e4 LT |
218 | |
219 | #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT | |
220 | int sysctl_legacy_va_layout; | |
221 | #endif | |
222 | ||
1da177e4 LT |
223 | /* The default sysctl tables: */ |
224 | ||
de4e83bd | 225 | static struct ctl_table sysctl_base_table[] = { |
1da177e4 | 226 | { |
1da177e4 LT |
227 | .procname = "kernel", |
228 | .mode = 0555, | |
229 | .child = kern_table, | |
230 | }, | |
231 | { | |
1da177e4 LT |
232 | .procname = "vm", |
233 | .mode = 0555, | |
234 | .child = vm_table, | |
235 | }, | |
1da177e4 | 236 | { |
1da177e4 LT |
237 | .procname = "fs", |
238 | .mode = 0555, | |
239 | .child = fs_table, | |
240 | }, | |
241 | { | |
1da177e4 LT |
242 | .procname = "debug", |
243 | .mode = 0555, | |
244 | .child = debug_table, | |
245 | }, | |
246 | { | |
1da177e4 LT |
247 | .procname = "dev", |
248 | .mode = 0555, | |
249 | .child = dev_table, | |
250 | }, | |
6fce56ec | 251 | { } |
1da177e4 LT |
252 | }; |
253 | ||
77e54a1f | 254 | #ifdef CONFIG_SCHED_DEBUG |
73c4efd2 ED |
255 | static int min_sched_granularity_ns = 100000; /* 100 usecs */ |
256 | static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */ | |
257 | static int min_wakeup_granularity_ns; /* 0 usecs */ | |
258 | static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */ | |
cbee9f88 | 259 | #ifdef CONFIG_SMP |
1983a922 CE |
260 | static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE; |
261 | static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1; | |
cbee9f88 PZ |
262 | #endif /* CONFIG_SMP */ |
263 | #endif /* CONFIG_SCHED_DEBUG */ | |
77e54a1f | 264 | |
5e771905 MG |
265 | #ifdef CONFIG_COMPACTION |
266 | static int min_extfrag_threshold; | |
267 | static int max_extfrag_threshold = 1000; | |
268 | #endif | |
269 | ||
d8217f07 | 270 | static struct ctl_table kern_table[] = { |
2bba22c5 | 271 | { |
2bba22c5 MG |
272 | .procname = "sched_child_runs_first", |
273 | .data = &sysctl_sched_child_runs_first, | |
274 | .maxlen = sizeof(unsigned int), | |
275 | .mode = 0644, | |
6d456111 | 276 | .proc_handler = proc_dointvec, |
2bba22c5 | 277 | }, |
77e54a1f IM |
278 | #ifdef CONFIG_SCHED_DEBUG |
279 | { | |
b2be5e96 PZ |
280 | .procname = "sched_min_granularity_ns", |
281 | .data = &sysctl_sched_min_granularity, | |
77e54a1f IM |
282 | .maxlen = sizeof(unsigned int), |
283 | .mode = 0644, | |
702a7c76 | 284 | .proc_handler = sched_proc_update_handler, |
b2be5e96 PZ |
285 | .extra1 = &min_sched_granularity_ns, |
286 | .extra2 = &max_sched_granularity_ns, | |
77e54a1f | 287 | }, |
21805085 | 288 | { |
21805085 PZ |
289 | .procname = "sched_latency_ns", |
290 | .data = &sysctl_sched_latency, | |
291 | .maxlen = sizeof(unsigned int), | |
292 | .mode = 0644, | |
702a7c76 | 293 | .proc_handler = sched_proc_update_handler, |
21805085 PZ |
294 | .extra1 = &min_sched_granularity_ns, |
295 | .extra2 = &max_sched_granularity_ns, | |
296 | }, | |
77e54a1f | 297 | { |
77e54a1f IM |
298 | .procname = "sched_wakeup_granularity_ns", |
299 | .data = &sysctl_sched_wakeup_granularity, | |
300 | .maxlen = sizeof(unsigned int), | |
301 | .mode = 0644, | |
702a7c76 | 302 | .proc_handler = sched_proc_update_handler, |
77e54a1f IM |
303 | .extra1 = &min_wakeup_granularity_ns, |
304 | .extra2 = &max_wakeup_granularity_ns, | |
305 | }, | |
cbee9f88 | 306 | #ifdef CONFIG_SMP |
1983a922 | 307 | { |
1983a922 CE |
308 | .procname = "sched_tunable_scaling", |
309 | .data = &sysctl_sched_tunable_scaling, | |
310 | .maxlen = sizeof(enum sched_tunable_scaling), | |
311 | .mode = 0644, | |
702a7c76 | 312 | .proc_handler = sched_proc_update_handler, |
1983a922 CE |
313 | .extra1 = &min_sched_tunable_scaling, |
314 | .extra2 = &max_sched_tunable_scaling, | |
2398f2c6 | 315 | }, |
da84d961 | 316 | { |
d00535db | 317 | .procname = "sched_migration_cost_ns", |
da84d961 IM |
318 | .data = &sysctl_sched_migration_cost, |
319 | .maxlen = sizeof(unsigned int), | |
320 | .mode = 0644, | |
6d456111 | 321 | .proc_handler = proc_dointvec, |
da84d961 | 322 | }, |
b82d9fdd | 323 | { |
b82d9fdd PZ |
324 | .procname = "sched_nr_migrate", |
325 | .data = &sysctl_sched_nr_migrate, | |
326 | .maxlen = sizeof(unsigned int), | |
fa85ae24 | 327 | .mode = 0644, |
6d456111 | 328 | .proc_handler = proc_dointvec, |
fa85ae24 | 329 | }, |
e9e9250b | 330 | { |
d00535db | 331 | .procname = "sched_time_avg_ms", |
e9e9250b PZ |
332 | .data = &sysctl_sched_time_avg, |
333 | .maxlen = sizeof(unsigned int), | |
334 | .mode = 0644, | |
6d456111 | 335 | .proc_handler = proc_dointvec, |
e9e9250b | 336 | }, |
a7a4f8a7 | 337 | { |
d00535db | 338 | .procname = "sched_shares_window_ns", |
a7a4f8a7 PT |
339 | .data = &sysctl_sched_shares_window, |
340 | .maxlen = sizeof(unsigned int), | |
341 | .mode = 0644, | |
342 | .proc_handler = proc_dointvec, | |
343 | }, | |
cd1bb94b | 344 | { |
cd1bb94b AB |
345 | .procname = "timer_migration", |
346 | .data = &sysctl_timer_migration, | |
347 | .maxlen = sizeof(unsigned int), | |
348 | .mode = 0644, | |
6d456111 | 349 | .proc_handler = proc_dointvec_minmax, |
bfdb4d9f AB |
350 | .extra1 = &zero, |
351 | .extra2 = &one, | |
fa85ae24 | 352 | }, |
cbee9f88 PZ |
353 | #endif /* CONFIG_SMP */ |
354 | #ifdef CONFIG_NUMA_BALANCING | |
4b96a29b PZ |
355 | { |
356 | .procname = "numa_balancing_scan_delay_ms", | |
357 | .data = &sysctl_numa_balancing_scan_delay, | |
358 | .maxlen = sizeof(unsigned int), | |
359 | .mode = 0644, | |
360 | .proc_handler = proc_dointvec, | |
361 | }, | |
cbee9f88 PZ |
362 | { |
363 | .procname = "numa_balancing_scan_period_min_ms", | |
364 | .data = &sysctl_numa_balancing_scan_period_min, | |
365 | .maxlen = sizeof(unsigned int), | |
366 | .mode = 0644, | |
367 | .proc_handler = proc_dointvec, | |
368 | }, | |
369 | { | |
370 | .procname = "numa_balancing_scan_period_max_ms", | |
371 | .data = &sysctl_numa_balancing_scan_period_max, | |
372 | .maxlen = sizeof(unsigned int), | |
373 | .mode = 0644, | |
374 | .proc_handler = proc_dointvec, | |
375 | }, | |
6e5fb223 PZ |
376 | { |
377 | .procname = "numa_balancing_scan_size_mb", | |
378 | .data = &sysctl_numa_balancing_scan_size, | |
379 | .maxlen = sizeof(unsigned int), | |
380 | .mode = 0644, | |
381 | .proc_handler = proc_dointvec, | |
382 | }, | |
cbee9f88 PZ |
383 | #endif /* CONFIG_NUMA_BALANCING */ |
384 | #endif /* CONFIG_SCHED_DEBUG */ | |
9f0c1e56 | 385 | { |
9f0c1e56 PZ |
386 | .procname = "sched_rt_period_us", |
387 | .data = &sysctl_sched_rt_period, | |
388 | .maxlen = sizeof(unsigned int), | |
389 | .mode = 0644, | |
6d456111 | 390 | .proc_handler = sched_rt_handler, |
9f0c1e56 PZ |
391 | }, |
392 | { | |
9f0c1e56 PZ |
393 | .procname = "sched_rt_runtime_us", |
394 | .data = &sysctl_sched_rt_runtime, | |
395 | .maxlen = sizeof(int), | |
396 | .mode = 0644, | |
6d456111 | 397 | .proc_handler = sched_rt_handler, |
9f0c1e56 | 398 | }, |
5091faa4 MG |
399 | #ifdef CONFIG_SCHED_AUTOGROUP |
400 | { | |
401 | .procname = "sched_autogroup_enabled", | |
402 | .data = &sysctl_sched_autogroup_enabled, | |
403 | .maxlen = sizeof(unsigned int), | |
404 | .mode = 0644, | |
1747b21f | 405 | .proc_handler = proc_dointvec_minmax, |
5091faa4 MG |
406 | .extra1 = &zero, |
407 | .extra2 = &one, | |
408 | }, | |
409 | #endif | |
ec12cb7f PT |
410 | #ifdef CONFIG_CFS_BANDWIDTH |
411 | { | |
412 | .procname = "sched_cfs_bandwidth_slice_us", | |
413 | .data = &sysctl_sched_cfs_bandwidth_slice, | |
414 | .maxlen = sizeof(unsigned int), | |
415 | .mode = 0644, | |
416 | .proc_handler = proc_dointvec_minmax, | |
417 | .extra1 = &one, | |
418 | }, | |
419 | #endif | |
f20786ff PZ |
420 | #ifdef CONFIG_PROVE_LOCKING |
421 | { | |
f20786ff PZ |
422 | .procname = "prove_locking", |
423 | .data = &prove_locking, | |
424 | .maxlen = sizeof(int), | |
425 | .mode = 0644, | |
6d456111 | 426 | .proc_handler = proc_dointvec, |
f20786ff PZ |
427 | }, |
428 | #endif | |
429 | #ifdef CONFIG_LOCK_STAT | |
430 | { | |
f20786ff PZ |
431 | .procname = "lock_stat", |
432 | .data = &lock_stat, | |
433 | .maxlen = sizeof(int), | |
434 | .mode = 0644, | |
6d456111 | 435 | .proc_handler = proc_dointvec, |
f20786ff | 436 | }, |
77e54a1f | 437 | #endif |
1da177e4 | 438 | { |
1da177e4 LT |
439 | .procname = "panic", |
440 | .data = &panic_timeout, | |
441 | .maxlen = sizeof(int), | |
442 | .mode = 0644, | |
6d456111 | 443 | .proc_handler = proc_dointvec, |
1da177e4 | 444 | }, |
046d662f | 445 | #ifdef CONFIG_COREDUMP |
1da177e4 | 446 | { |
1da177e4 LT |
447 | .procname = "core_uses_pid", |
448 | .data = &core_uses_pid, | |
449 | .maxlen = sizeof(int), | |
450 | .mode = 0644, | |
6d456111 | 451 | .proc_handler = proc_dointvec, |
1da177e4 LT |
452 | }, |
453 | { | |
1da177e4 LT |
454 | .procname = "core_pattern", |
455 | .data = core_pattern, | |
71ce92f3 | 456 | .maxlen = CORENAME_MAX_SIZE, |
1da177e4 | 457 | .mode = 0644, |
54b50199 | 458 | .proc_handler = proc_dostring_coredump, |
1da177e4 | 459 | }, |
a293980c | 460 | { |
a293980c NH |
461 | .procname = "core_pipe_limit", |
462 | .data = &core_pipe_limit, | |
463 | .maxlen = sizeof(unsigned int), | |
464 | .mode = 0644, | |
6d456111 | 465 | .proc_handler = proc_dointvec, |
a293980c | 466 | }, |
046d662f | 467 | #endif |
34f5a398 | 468 | #ifdef CONFIG_PROC_SYSCTL |
1da177e4 | 469 | { |
1da177e4 | 470 | .procname = "tainted", |
25ddbb18 | 471 | .maxlen = sizeof(long), |
34f5a398 | 472 | .mode = 0644, |
6d456111 | 473 | .proc_handler = proc_taint, |
1da177e4 | 474 | }, |
34f5a398 | 475 | #endif |
9745512c AV |
476 | #ifdef CONFIG_LATENCYTOP |
477 | { | |
478 | .procname = "latencytop", | |
479 | .data = &latencytop_enabled, | |
480 | .maxlen = sizeof(int), | |
481 | .mode = 0644, | |
6d456111 | 482 | .proc_handler = proc_dointvec, |
9745512c AV |
483 | }, |
484 | #endif | |
1da177e4 LT |
485 | #ifdef CONFIG_BLK_DEV_INITRD |
486 | { | |
1da177e4 LT |
487 | .procname = "real-root-dev", |
488 | .data = &real_root_dev, | |
489 | .maxlen = sizeof(int), | |
490 | .mode = 0644, | |
6d456111 | 491 | .proc_handler = proc_dointvec, |
1da177e4 LT |
492 | }, |
493 | #endif | |
45807a1d | 494 | { |
45807a1d IM |
495 | .procname = "print-fatal-signals", |
496 | .data = &print_fatal_signals, | |
497 | .maxlen = sizeof(int), | |
498 | .mode = 0644, | |
6d456111 | 499 | .proc_handler = proc_dointvec, |
45807a1d | 500 | }, |
72c57ed5 | 501 | #ifdef CONFIG_SPARC |
1da177e4 | 502 | { |
1da177e4 LT |
503 | .procname = "reboot-cmd", |
504 | .data = reboot_command, | |
505 | .maxlen = 256, | |
506 | .mode = 0644, | |
6d456111 | 507 | .proc_handler = proc_dostring, |
1da177e4 LT |
508 | }, |
509 | { | |
1da177e4 LT |
510 | .procname = "stop-a", |
511 | .data = &stop_a_enabled, | |
512 | .maxlen = sizeof (int), | |
513 | .mode = 0644, | |
6d456111 | 514 | .proc_handler = proc_dointvec, |
1da177e4 LT |
515 | }, |
516 | { | |
1da177e4 LT |
517 | .procname = "scons-poweroff", |
518 | .data = &scons_pwroff, | |
519 | .maxlen = sizeof (int), | |
520 | .mode = 0644, | |
6d456111 | 521 | .proc_handler = proc_dointvec, |
1da177e4 LT |
522 | }, |
523 | #endif | |
0871420f DM |
524 | #ifdef CONFIG_SPARC64 |
525 | { | |
0871420f DM |
526 | .procname = "tsb-ratio", |
527 | .data = &sysctl_tsb_ratio, | |
528 | .maxlen = sizeof (int), | |
529 | .mode = 0644, | |
6d456111 | 530 | .proc_handler = proc_dointvec, |
0871420f DM |
531 | }, |
532 | #endif | |
1da177e4 LT |
533 | #ifdef __hppa__ |
534 | { | |
1da177e4 LT |
535 | .procname = "soft-power", |
536 | .data = &pwrsw_enabled, | |
537 | .maxlen = sizeof (int), | |
538 | .mode = 0644, | |
6d456111 | 539 | .proc_handler = proc_dointvec, |
1da177e4 LT |
540 | }, |
541 | { | |
1da177e4 LT |
542 | .procname = "unaligned-trap", |
543 | .data = &unaligned_enabled, | |
544 | .maxlen = sizeof (int), | |
545 | .mode = 0644, | |
6d456111 | 546 | .proc_handler = proc_dointvec, |
1da177e4 LT |
547 | }, |
548 | #endif | |
549 | { | |
1da177e4 LT |
550 | .procname = "ctrl-alt-del", |
551 | .data = &C_A_D, | |
552 | .maxlen = sizeof(int), | |
553 | .mode = 0644, | |
6d456111 | 554 | .proc_handler = proc_dointvec, |
1da177e4 | 555 | }, |
606576ce | 556 | #ifdef CONFIG_FUNCTION_TRACER |
b0fc494f | 557 | { |
b0fc494f SR |
558 | .procname = "ftrace_enabled", |
559 | .data = &ftrace_enabled, | |
560 | .maxlen = sizeof(int), | |
561 | .mode = 0644, | |
6d456111 | 562 | .proc_handler = ftrace_enable_sysctl, |
b0fc494f SR |
563 | }, |
564 | #endif | |
f38f1d2a SR |
565 | #ifdef CONFIG_STACK_TRACER |
566 | { | |
f38f1d2a SR |
567 | .procname = "stack_tracer_enabled", |
568 | .data = &stack_tracer_enabled, | |
569 | .maxlen = sizeof(int), | |
570 | .mode = 0644, | |
6d456111 | 571 | .proc_handler = stack_trace_sysctl, |
f38f1d2a SR |
572 | }, |
573 | #endif | |
944ac425 SR |
574 | #ifdef CONFIG_TRACING |
575 | { | |
3299b4dd | 576 | .procname = "ftrace_dump_on_oops", |
944ac425 SR |
577 | .data = &ftrace_dump_on_oops, |
578 | .maxlen = sizeof(int), | |
579 | .mode = 0644, | |
6d456111 | 580 | .proc_handler = proc_dointvec, |
944ac425 SR |
581 | }, |
582 | #endif | |
a1ef5adb | 583 | #ifdef CONFIG_MODULES |
1da177e4 | 584 | { |
1da177e4 LT |
585 | .procname = "modprobe", |
586 | .data = &modprobe_path, | |
587 | .maxlen = KMOD_PATH_LEN, | |
588 | .mode = 0644, | |
6d456111 | 589 | .proc_handler = proc_dostring, |
1da177e4 | 590 | }, |
3d43321b | 591 | { |
3d43321b KC |
592 | .procname = "modules_disabled", |
593 | .data = &modules_disabled, | |
594 | .maxlen = sizeof(int), | |
595 | .mode = 0644, | |
596 | /* only handle a transition from default "0" to "1" */ | |
6d456111 | 597 | .proc_handler = proc_dointvec_minmax, |
3d43321b KC |
598 | .extra1 = &one, |
599 | .extra2 = &one, | |
600 | }, | |
1da177e4 | 601 | #endif |
94f17cd7 | 602 | #ifdef CONFIG_HOTPLUG |
1da177e4 | 603 | { |
1da177e4 | 604 | .procname = "hotplug", |
312c004d KS |
605 | .data = &uevent_helper, |
606 | .maxlen = UEVENT_HELPER_PATH_LEN, | |
1da177e4 | 607 | .mode = 0644, |
6d456111 | 608 | .proc_handler = proc_dostring, |
1da177e4 LT |
609 | }, |
610 | #endif | |
611 | #ifdef CONFIG_CHR_DEV_SG | |
612 | { | |
1da177e4 LT |
613 | .procname = "sg-big-buff", |
614 | .data = &sg_big_buff, | |
615 | .maxlen = sizeof (int), | |
616 | .mode = 0444, | |
6d456111 | 617 | .proc_handler = proc_dointvec, |
1da177e4 LT |
618 | }, |
619 | #endif | |
620 | #ifdef CONFIG_BSD_PROCESS_ACCT | |
621 | { | |
1da177e4 LT |
622 | .procname = "acct", |
623 | .data = &acct_parm, | |
624 | .maxlen = 3*sizeof(int), | |
625 | .mode = 0644, | |
6d456111 | 626 | .proc_handler = proc_dointvec, |
1da177e4 LT |
627 | }, |
628 | #endif | |
1da177e4 LT |
629 | #ifdef CONFIG_MAGIC_SYSRQ |
630 | { | |
1da177e4 | 631 | .procname = "sysrq", |
5d6f647f | 632 | .data = &__sysrq_enabled, |
1da177e4 LT |
633 | .maxlen = sizeof (int), |
634 | .mode = 0644, | |
97f5f0cd | 635 | .proc_handler = sysrq_sysctl_handler, |
1da177e4 LT |
636 | }, |
637 | #endif | |
d6f8ff73 | 638 | #ifdef CONFIG_PROC_SYSCTL |
1da177e4 | 639 | { |
1da177e4 | 640 | .procname = "cad_pid", |
9ec52099 | 641 | .data = NULL, |
1da177e4 LT |
642 | .maxlen = sizeof (int), |
643 | .mode = 0600, | |
6d456111 | 644 | .proc_handler = proc_do_cad_pid, |
1da177e4 | 645 | }, |
d6f8ff73 | 646 | #endif |
1da177e4 | 647 | { |
1da177e4 LT |
648 | .procname = "threads-max", |
649 | .data = &max_threads, | |
650 | .maxlen = sizeof(int), | |
651 | .mode = 0644, | |
6d456111 | 652 | .proc_handler = proc_dointvec, |
1da177e4 LT |
653 | }, |
654 | { | |
1da177e4 LT |
655 | .procname = "random", |
656 | .mode = 0555, | |
657 | .child = random_table, | |
658 | }, | |
17f60a7d EP |
659 | { |
660 | .procname = "usermodehelper", | |
661 | .mode = 0555, | |
662 | .child = usermodehelper_table, | |
663 | }, | |
1da177e4 | 664 | { |
1da177e4 LT |
665 | .procname = "overflowuid", |
666 | .data = &overflowuid, | |
667 | .maxlen = sizeof(int), | |
668 | .mode = 0644, | |
6d456111 | 669 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
670 | .extra1 = &minolduid, |
671 | .extra2 = &maxolduid, | |
672 | }, | |
673 | { | |
1da177e4 LT |
674 | .procname = "overflowgid", |
675 | .data = &overflowgid, | |
676 | .maxlen = sizeof(int), | |
677 | .mode = 0644, | |
6d456111 | 678 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
679 | .extra1 = &minolduid, |
680 | .extra2 = &maxolduid, | |
681 | }, | |
347a8dc3 | 682 | #ifdef CONFIG_S390 |
1da177e4 LT |
683 | #ifdef CONFIG_MATHEMU |
684 | { | |
1da177e4 LT |
685 | .procname = "ieee_emulation_warnings", |
686 | .data = &sysctl_ieee_emulation_warnings, | |
687 | .maxlen = sizeof(int), | |
688 | .mode = 0644, | |
6d456111 | 689 | .proc_handler = proc_dointvec, |
1da177e4 | 690 | }, |
1da177e4 LT |
691 | #endif |
692 | { | |
1da177e4 | 693 | .procname = "userprocess_debug", |
ab3c68ee | 694 | .data = &show_unhandled_signals, |
1da177e4 LT |
695 | .maxlen = sizeof(int), |
696 | .mode = 0644, | |
6d456111 | 697 | .proc_handler = proc_dointvec, |
1da177e4 LT |
698 | }, |
699 | #endif | |
700 | { | |
1da177e4 LT |
701 | .procname = "pid_max", |
702 | .data = &pid_max, | |
703 | .maxlen = sizeof (int), | |
704 | .mode = 0644, | |
6d456111 | 705 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
706 | .extra1 = &pid_max_min, |
707 | .extra2 = &pid_max_max, | |
708 | }, | |
709 | { | |
1da177e4 LT |
710 | .procname = "panic_on_oops", |
711 | .data = &panic_on_oops, | |
712 | .maxlen = sizeof(int), | |
713 | .mode = 0644, | |
6d456111 | 714 | .proc_handler = proc_dointvec, |
1da177e4 | 715 | }, |
7ef3d2fd JP |
716 | #if defined CONFIG_PRINTK |
717 | { | |
7ef3d2fd JP |
718 | .procname = "printk", |
719 | .data = &console_loglevel, | |
720 | .maxlen = 4*sizeof(int), | |
721 | .mode = 0644, | |
6d456111 | 722 | .proc_handler = proc_dointvec, |
7ef3d2fd | 723 | }, |
1da177e4 | 724 | { |
1da177e4 | 725 | .procname = "printk_ratelimit", |
717115e1 | 726 | .data = &printk_ratelimit_state.interval, |
1da177e4 LT |
727 | .maxlen = sizeof(int), |
728 | .mode = 0644, | |
6d456111 | 729 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
730 | }, |
731 | { | |
1da177e4 | 732 | .procname = "printk_ratelimit_burst", |
717115e1 | 733 | .data = &printk_ratelimit_state.burst, |
1da177e4 LT |
734 | .maxlen = sizeof(int), |
735 | .mode = 0644, | |
6d456111 | 736 | .proc_handler = proc_dointvec, |
1da177e4 | 737 | }, |
af91322e | 738 | { |
af91322e DY |
739 | .procname = "printk_delay", |
740 | .data = &printk_delay_msec, | |
741 | .maxlen = sizeof(int), | |
742 | .mode = 0644, | |
6d456111 | 743 | .proc_handler = proc_dointvec_minmax, |
af91322e DY |
744 | .extra1 = &zero, |
745 | .extra2 = &ten_thousand, | |
746 | }, | |
eaf06b24 DR |
747 | { |
748 | .procname = "dmesg_restrict", | |
749 | .data = &dmesg_restrict, | |
750 | .maxlen = sizeof(int), | |
751 | .mode = 0644, | |
620f6e8e | 752 | .proc_handler = proc_dointvec_minmax_sysadmin, |
eaf06b24 DR |
753 | .extra1 = &zero, |
754 | .extra2 = &one, | |
755 | }, | |
455cd5ab DR |
756 | { |
757 | .procname = "kptr_restrict", | |
758 | .data = &kptr_restrict, | |
759 | .maxlen = sizeof(int), | |
760 | .mode = 0644, | |
620f6e8e | 761 | .proc_handler = proc_dointvec_minmax_sysadmin, |
455cd5ab DR |
762 | .extra1 = &zero, |
763 | .extra2 = &two, | |
764 | }, | |
df6e61d4 | 765 | #endif |
1da177e4 | 766 | { |
1da177e4 LT |
767 | .procname = "ngroups_max", |
768 | .data = &ngroups_max, | |
769 | .maxlen = sizeof (int), | |
770 | .mode = 0444, | |
6d456111 | 771 | .proc_handler = proc_dointvec, |
1da177e4 | 772 | }, |
73efc039 DB |
773 | { |
774 | .procname = "cap_last_cap", | |
775 | .data = (void *)&cap_last_cap, | |
776 | .maxlen = sizeof(int), | |
777 | .mode = 0444, | |
778 | .proc_handler = proc_dointvec, | |
779 | }, | |
58687acb | 780 | #if defined(CONFIG_LOCKUP_DETECTOR) |
504d7cf1 | 781 | { |
58687acb DZ |
782 | .procname = "watchdog", |
783 | .data = &watchdog_enabled, | |
504d7cf1 DZ |
784 | .maxlen = sizeof (int), |
785 | .mode = 0644, | |
586692a5 MSB |
786 | .proc_handler = proc_dowatchdog, |
787 | .extra1 = &zero, | |
788 | .extra2 = &one, | |
58687acb DZ |
789 | }, |
790 | { | |
791 | .procname = "watchdog_thresh", | |
586692a5 | 792 | .data = &watchdog_thresh, |
58687acb DZ |
793 | .maxlen = sizeof(int), |
794 | .mode = 0644, | |
586692a5 | 795 | .proc_handler = proc_dowatchdog, |
58687acb DZ |
796 | .extra1 = &neg_one, |
797 | .extra2 = &sixty, | |
504d7cf1 | 798 | }, |
2508ce18 DZ |
799 | { |
800 | .procname = "softlockup_panic", | |
801 | .data = &softlockup_panic, | |
802 | .maxlen = sizeof(int), | |
803 | .mode = 0644, | |
804 | .proc_handler = proc_dointvec_minmax, | |
805 | .extra1 = &zero, | |
806 | .extra2 = &one, | |
807 | }, | |
5dc30558 DZ |
808 | { |
809 | .procname = "nmi_watchdog", | |
810 | .data = &watchdog_enabled, | |
811 | .maxlen = sizeof (int), | |
812 | .mode = 0644, | |
586692a5 MSB |
813 | .proc_handler = proc_dowatchdog, |
814 | .extra1 = &zero, | |
815 | .extra2 = &one, | |
5dc30558 DZ |
816 | }, |
817 | #endif | |
818 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) | |
819 | { | |
820 | .procname = "unknown_nmi_panic", | |
821 | .data = &unknown_nmi_panic, | |
822 | .maxlen = sizeof (int), | |
823 | .mode = 0644, | |
824 | .proc_handler = proc_dointvec, | |
825 | }, | |
504d7cf1 | 826 | #endif |
1da177e4 | 827 | #if defined(CONFIG_X86) |
8da5adda | 828 | { |
8da5adda DZ |
829 | .procname = "panic_on_unrecovered_nmi", |
830 | .data = &panic_on_unrecovered_nmi, | |
831 | .maxlen = sizeof(int), | |
832 | .mode = 0644, | |
6d456111 | 833 | .proc_handler = proc_dointvec, |
8da5adda | 834 | }, |
5211a242 | 835 | { |
5211a242 KG |
836 | .procname = "panic_on_io_nmi", |
837 | .data = &panic_on_io_nmi, | |
838 | .maxlen = sizeof(int), | |
839 | .mode = 0644, | |
6d456111 | 840 | .proc_handler = proc_dointvec, |
5211a242 | 841 | }, |
55af7796 MH |
842 | #ifdef CONFIG_DEBUG_STACKOVERFLOW |
843 | { | |
844 | .procname = "panic_on_stackoverflow", | |
845 | .data = &sysctl_panic_on_stackoverflow, | |
846 | .maxlen = sizeof(int), | |
847 | .mode = 0644, | |
848 | .proc_handler = proc_dointvec, | |
849 | }, | |
850 | #endif | |
1da177e4 | 851 | { |
1da177e4 LT |
852 | .procname = "bootloader_type", |
853 | .data = &bootloader_type, | |
854 | .maxlen = sizeof (int), | |
855 | .mode = 0444, | |
6d456111 | 856 | .proc_handler = proc_dointvec, |
1da177e4 | 857 | }, |
5031296c | 858 | { |
5031296c PA |
859 | .procname = "bootloader_version", |
860 | .data = &bootloader_version, | |
861 | .maxlen = sizeof (int), | |
862 | .mode = 0444, | |
6d456111 | 863 | .proc_handler = proc_dointvec, |
5031296c | 864 | }, |
0741f4d2 | 865 | { |
0741f4d2 CE |
866 | .procname = "kstack_depth_to_print", |
867 | .data = &kstack_depth_to_print, | |
868 | .maxlen = sizeof(int), | |
869 | .mode = 0644, | |
6d456111 | 870 | .proc_handler = proc_dointvec, |
0741f4d2 | 871 | }, |
6e7c4025 | 872 | { |
6e7c4025 IM |
873 | .procname = "io_delay_type", |
874 | .data = &io_delay_type, | |
875 | .maxlen = sizeof(int), | |
876 | .mode = 0644, | |
6d456111 | 877 | .proc_handler = proc_dointvec, |
6e7c4025 | 878 | }, |
1da177e4 | 879 | #endif |
7a9166e3 | 880 | #if defined(CONFIG_MMU) |
1da177e4 | 881 | { |
1da177e4 LT |
882 | .procname = "randomize_va_space", |
883 | .data = &randomize_va_space, | |
884 | .maxlen = sizeof(int), | |
885 | .mode = 0644, | |
6d456111 | 886 | .proc_handler = proc_dointvec, |
1da177e4 | 887 | }, |
7a9166e3 | 888 | #endif |
0152fb37 | 889 | #if defined(CONFIG_S390) && defined(CONFIG_SMP) |
951f22d5 | 890 | { |
951f22d5 MS |
891 | .procname = "spin_retry", |
892 | .data = &spin_retry, | |
893 | .maxlen = sizeof (int), | |
894 | .mode = 0644, | |
6d456111 | 895 | .proc_handler = proc_dointvec, |
951f22d5 | 896 | }, |
c255d844 | 897 | #endif |
673d5b43 | 898 | #if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86) |
c255d844 | 899 | { |
c255d844 | 900 | .procname = "acpi_video_flags", |
77afcf78 | 901 | .data = &acpi_realmode_flags, |
c255d844 PM |
902 | .maxlen = sizeof (unsigned long), |
903 | .mode = 0644, | |
6d456111 | 904 | .proc_handler = proc_doulongvec_minmax, |
c255d844 | 905 | }, |
d2b176ed JS |
906 | #endif |
907 | #ifdef CONFIG_IA64 | |
908 | { | |
d2b176ed JS |
909 | .procname = "ignore-unaligned-usertrap", |
910 | .data = &no_unaligned_warning, | |
911 | .maxlen = sizeof (int), | |
912 | .mode = 0644, | |
6d456111 | 913 | .proc_handler = proc_dointvec, |
d2b176ed | 914 | }, |
88fc241f | 915 | { |
88fc241f DC |
916 | .procname = "unaligned-dump-stack", |
917 | .data = &unaligned_dump_stack, | |
918 | .maxlen = sizeof (int), | |
919 | .mode = 0644, | |
6d456111 | 920 | .proc_handler = proc_dointvec, |
88fc241f | 921 | }, |
bebfa101 | 922 | #endif |
e162b39a MSB |
923 | #ifdef CONFIG_DETECT_HUNG_TASK |
924 | { | |
e162b39a MSB |
925 | .procname = "hung_task_panic", |
926 | .data = &sysctl_hung_task_panic, | |
927 | .maxlen = sizeof(int), | |
928 | .mode = 0644, | |
6d456111 | 929 | .proc_handler = proc_dointvec_minmax, |
e162b39a MSB |
930 | .extra1 = &zero, |
931 | .extra2 = &one, | |
932 | }, | |
82a1fcb9 | 933 | { |
82a1fcb9 IM |
934 | .procname = "hung_task_check_count", |
935 | .data = &sysctl_hung_task_check_count, | |
90739081 | 936 | .maxlen = sizeof(unsigned long), |
82a1fcb9 | 937 | .mode = 0644, |
6d456111 | 938 | .proc_handler = proc_doulongvec_minmax, |
82a1fcb9 IM |
939 | }, |
940 | { | |
82a1fcb9 IM |
941 | .procname = "hung_task_timeout_secs", |
942 | .data = &sysctl_hung_task_timeout_secs, | |
90739081 | 943 | .maxlen = sizeof(unsigned long), |
82a1fcb9 | 944 | .mode = 0644, |
6d456111 | 945 | .proc_handler = proc_dohung_task_timeout_secs, |
82a1fcb9 IM |
946 | }, |
947 | { | |
82a1fcb9 IM |
948 | .procname = "hung_task_warnings", |
949 | .data = &sysctl_hung_task_warnings, | |
90739081 | 950 | .maxlen = sizeof(unsigned long), |
82a1fcb9 | 951 | .mode = 0644, |
6d456111 | 952 | .proc_handler = proc_doulongvec_minmax, |
82a1fcb9 | 953 | }, |
c4f3b63f | 954 | #endif |
bebfa101 AK |
955 | #ifdef CONFIG_COMPAT |
956 | { | |
bebfa101 AK |
957 | .procname = "compat-log", |
958 | .data = &compat_log, | |
959 | .maxlen = sizeof (int), | |
960 | .mode = 0644, | |
6d456111 | 961 | .proc_handler = proc_dointvec, |
bebfa101 | 962 | }, |
951f22d5 | 963 | #endif |
23f78d4a IM |
964 | #ifdef CONFIG_RT_MUTEXES |
965 | { | |
23f78d4a IM |
966 | .procname = "max_lock_depth", |
967 | .data = &max_lock_depth, | |
968 | .maxlen = sizeof(int), | |
969 | .mode = 0644, | |
6d456111 | 970 | .proc_handler = proc_dointvec, |
23f78d4a | 971 | }, |
5096add8 | 972 | #endif |
10a0a8d4 | 973 | { |
10a0a8d4 JF |
974 | .procname = "poweroff_cmd", |
975 | .data = &poweroff_cmd, | |
976 | .maxlen = POWEROFF_CMD_PATH_LEN, | |
977 | .mode = 0644, | |
6d456111 | 978 | .proc_handler = proc_dostring, |
10a0a8d4 | 979 | }, |
0b77f5bf DH |
980 | #ifdef CONFIG_KEYS |
981 | { | |
0b77f5bf DH |
982 | .procname = "keys", |
983 | .mode = 0555, | |
984 | .child = key_sysctls, | |
985 | }, | |
986 | #endif | |
31a72bce PM |
987 | #ifdef CONFIG_RCU_TORTURE_TEST |
988 | { | |
31a72bce PM |
989 | .procname = "rcutorture_runnable", |
990 | .data = &rcutorture_runnable, | |
991 | .maxlen = sizeof(int), | |
992 | .mode = 0644, | |
6d456111 | 993 | .proc_handler = proc_dointvec, |
31a72bce PM |
994 | }, |
995 | #endif | |
cdd6c482 | 996 | #ifdef CONFIG_PERF_EVENTS |
aa4a2218 VW |
997 | /* |
998 | * User-space scripts rely on the existence of this file | |
999 | * as a feature check for perf_events being enabled. | |
1000 | * | |
1001 | * So it's an ABI, do not remove! | |
1002 | */ | |
1ccd1549 | 1003 | { |
cdd6c482 IM |
1004 | .procname = "perf_event_paranoid", |
1005 | .data = &sysctl_perf_event_paranoid, | |
1006 | .maxlen = sizeof(sysctl_perf_event_paranoid), | |
1ccd1549 | 1007 | .mode = 0644, |
6d456111 | 1008 | .proc_handler = proc_dointvec, |
1ccd1549 | 1009 | }, |
c5078f78 | 1010 | { |
cdd6c482 IM |
1011 | .procname = "perf_event_mlock_kb", |
1012 | .data = &sysctl_perf_event_mlock, | |
1013 | .maxlen = sizeof(sysctl_perf_event_mlock), | |
c5078f78 | 1014 | .mode = 0644, |
6d456111 | 1015 | .proc_handler = proc_dointvec, |
c5078f78 | 1016 | }, |
a78ac325 | 1017 | { |
cdd6c482 IM |
1018 | .procname = "perf_event_max_sample_rate", |
1019 | .data = &sysctl_perf_event_sample_rate, | |
1020 | .maxlen = sizeof(sysctl_perf_event_sample_rate), | |
a78ac325 | 1021 | .mode = 0644, |
163ec435 | 1022 | .proc_handler = perf_proc_update_handler, |
a78ac325 | 1023 | }, |
1ccd1549 | 1024 | #endif |
dfec072e VN |
1025 | #ifdef CONFIG_KMEMCHECK |
1026 | { | |
dfec072e VN |
1027 | .procname = "kmemcheck", |
1028 | .data = &kmemcheck_enabled, | |
1029 | .maxlen = sizeof(int), | |
1030 | .mode = 0644, | |
6d456111 | 1031 | .proc_handler = proc_dointvec, |
dfec072e VN |
1032 | }, |
1033 | #endif | |
cb684b5b | 1034 | #ifdef CONFIG_BLOCK |
5e605b64 | 1035 | { |
5e605b64 JA |
1036 | .procname = "blk_iopoll", |
1037 | .data = &blk_iopoll_enabled, | |
1038 | .maxlen = sizeof(int), | |
1039 | .mode = 0644, | |
6d456111 | 1040 | .proc_handler = proc_dointvec, |
5e605b64 | 1041 | }, |
cb684b5b | 1042 | #endif |
6fce56ec | 1043 | { } |
1da177e4 LT |
1044 | }; |
1045 | ||
d8217f07 | 1046 | static struct ctl_table vm_table[] = { |
1da177e4 | 1047 | { |
1da177e4 LT |
1048 | .procname = "overcommit_memory", |
1049 | .data = &sysctl_overcommit_memory, | |
1050 | .maxlen = sizeof(sysctl_overcommit_memory), | |
1051 | .mode = 0644, | |
cb16e95f PH |
1052 | .proc_handler = proc_dointvec_minmax, |
1053 | .extra1 = &zero, | |
1054 | .extra2 = &two, | |
1da177e4 | 1055 | }, |
fadd8fbd | 1056 | { |
fadd8fbd KH |
1057 | .procname = "panic_on_oom", |
1058 | .data = &sysctl_panic_on_oom, | |
1059 | .maxlen = sizeof(sysctl_panic_on_oom), | |
1060 | .mode = 0644, | |
cb16e95f PH |
1061 | .proc_handler = proc_dointvec_minmax, |
1062 | .extra1 = &zero, | |
1063 | .extra2 = &two, | |
fadd8fbd | 1064 | }, |
fe071d7e | 1065 | { |
fe071d7e DR |
1066 | .procname = "oom_kill_allocating_task", |
1067 | .data = &sysctl_oom_kill_allocating_task, | |
1068 | .maxlen = sizeof(sysctl_oom_kill_allocating_task), | |
1069 | .mode = 0644, | |
6d456111 | 1070 | .proc_handler = proc_dointvec, |
fe071d7e | 1071 | }, |
fef1bdd6 | 1072 | { |
fef1bdd6 DR |
1073 | .procname = "oom_dump_tasks", |
1074 | .data = &sysctl_oom_dump_tasks, | |
1075 | .maxlen = sizeof(sysctl_oom_dump_tasks), | |
1076 | .mode = 0644, | |
6d456111 | 1077 | .proc_handler = proc_dointvec, |
fef1bdd6 | 1078 | }, |
1da177e4 | 1079 | { |
1da177e4 LT |
1080 | .procname = "overcommit_ratio", |
1081 | .data = &sysctl_overcommit_ratio, | |
1082 | .maxlen = sizeof(sysctl_overcommit_ratio), | |
1083 | .mode = 0644, | |
6d456111 | 1084 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1085 | }, |
1086 | { | |
1da177e4 LT |
1087 | .procname = "page-cluster", |
1088 | .data = &page_cluster, | |
1089 | .maxlen = sizeof(int), | |
1090 | .mode = 0644, | |
cb16e95f PH |
1091 | .proc_handler = proc_dointvec_minmax, |
1092 | .extra1 = &zero, | |
1da177e4 LT |
1093 | }, |
1094 | { | |
1da177e4 LT |
1095 | .procname = "dirty_background_ratio", |
1096 | .data = &dirty_background_ratio, | |
1097 | .maxlen = sizeof(dirty_background_ratio), | |
1098 | .mode = 0644, | |
6d456111 | 1099 | .proc_handler = dirty_background_ratio_handler, |
1da177e4 LT |
1100 | .extra1 = &zero, |
1101 | .extra2 = &one_hundred, | |
1102 | }, | |
2da02997 | 1103 | { |
2da02997 DR |
1104 | .procname = "dirty_background_bytes", |
1105 | .data = &dirty_background_bytes, | |
1106 | .maxlen = sizeof(dirty_background_bytes), | |
1107 | .mode = 0644, | |
6d456111 | 1108 | .proc_handler = dirty_background_bytes_handler, |
fc3501d4 | 1109 | .extra1 = &one_ul, |
2da02997 | 1110 | }, |
1da177e4 | 1111 | { |
1da177e4 LT |
1112 | .procname = "dirty_ratio", |
1113 | .data = &vm_dirty_ratio, | |
1114 | .maxlen = sizeof(vm_dirty_ratio), | |
1115 | .mode = 0644, | |
6d456111 | 1116 | .proc_handler = dirty_ratio_handler, |
1da177e4 LT |
1117 | .extra1 = &zero, |
1118 | .extra2 = &one_hundred, | |
1119 | }, | |
2da02997 | 1120 | { |
2da02997 DR |
1121 | .procname = "dirty_bytes", |
1122 | .data = &vm_dirty_bytes, | |
1123 | .maxlen = sizeof(vm_dirty_bytes), | |
1124 | .mode = 0644, | |
6d456111 | 1125 | .proc_handler = dirty_bytes_handler, |
9e4a5bda | 1126 | .extra1 = &dirty_bytes_min, |
2da02997 | 1127 | }, |
1da177e4 | 1128 | { |
1da177e4 | 1129 | .procname = "dirty_writeback_centisecs", |
f6ef9438 BS |
1130 | .data = &dirty_writeback_interval, |
1131 | .maxlen = sizeof(dirty_writeback_interval), | |
1da177e4 | 1132 | .mode = 0644, |
6d456111 | 1133 | .proc_handler = dirty_writeback_centisecs_handler, |
1da177e4 LT |
1134 | }, |
1135 | { | |
1da177e4 | 1136 | .procname = "dirty_expire_centisecs", |
f6ef9438 BS |
1137 | .data = &dirty_expire_interval, |
1138 | .maxlen = sizeof(dirty_expire_interval), | |
1da177e4 | 1139 | .mode = 0644, |
cb16e95f PH |
1140 | .proc_handler = proc_dointvec_minmax, |
1141 | .extra1 = &zero, | |
1da177e4 LT |
1142 | }, |
1143 | { | |
3965c9ae WL |
1144 | .procname = "nr_pdflush_threads", |
1145 | .mode = 0444 /* read-only */, | |
1146 | .proc_handler = pdflush_proc_obsolete, | |
1da177e4 LT |
1147 | }, |
1148 | { | |
1da177e4 LT |
1149 | .procname = "swappiness", |
1150 | .data = &vm_swappiness, | |
1151 | .maxlen = sizeof(vm_swappiness), | |
1152 | .mode = 0644, | |
6d456111 | 1153 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
1154 | .extra1 = &zero, |
1155 | .extra2 = &one_hundred, | |
1156 | }, | |
1157 | #ifdef CONFIG_HUGETLB_PAGE | |
06808b08 | 1158 | { |
1da177e4 | 1159 | .procname = "nr_hugepages", |
e5ff2159 | 1160 | .data = NULL, |
1da177e4 LT |
1161 | .maxlen = sizeof(unsigned long), |
1162 | .mode = 0644, | |
6d456111 | 1163 | .proc_handler = hugetlb_sysctl_handler, |
1da177e4 LT |
1164 | .extra1 = (void *)&hugetlb_zero, |
1165 | .extra2 = (void *)&hugetlb_infinity, | |
06808b08 LS |
1166 | }, |
1167 | #ifdef CONFIG_NUMA | |
1168 | { | |
1169 | .procname = "nr_hugepages_mempolicy", | |
1170 | .data = NULL, | |
1171 | .maxlen = sizeof(unsigned long), | |
1172 | .mode = 0644, | |
1173 | .proc_handler = &hugetlb_mempolicy_sysctl_handler, | |
1174 | .extra1 = (void *)&hugetlb_zero, | |
1175 | .extra2 = (void *)&hugetlb_infinity, | |
1176 | }, | |
1177 | #endif | |
1da177e4 | 1178 | { |
1da177e4 LT |
1179 | .procname = "hugetlb_shm_group", |
1180 | .data = &sysctl_hugetlb_shm_group, | |
1181 | .maxlen = sizeof(gid_t), | |
1182 | .mode = 0644, | |
6d456111 | 1183 | .proc_handler = proc_dointvec, |
1da177e4 | 1184 | }, |
396faf03 | 1185 | { |
396faf03 MG |
1186 | .procname = "hugepages_treat_as_movable", |
1187 | .data = &hugepages_treat_as_movable, | |
1188 | .maxlen = sizeof(int), | |
1189 | .mode = 0644, | |
6d456111 | 1190 | .proc_handler = hugetlb_treat_movable_handler, |
396faf03 | 1191 | }, |
d1c3fb1f | 1192 | { |
d1c3fb1f | 1193 | .procname = "nr_overcommit_hugepages", |
e5ff2159 AK |
1194 | .data = NULL, |
1195 | .maxlen = sizeof(unsigned long), | |
d1c3fb1f | 1196 | .mode = 0644, |
6d456111 | 1197 | .proc_handler = hugetlb_overcommit_handler, |
e5ff2159 AK |
1198 | .extra1 = (void *)&hugetlb_zero, |
1199 | .extra2 = (void *)&hugetlb_infinity, | |
d1c3fb1f | 1200 | }, |
1da177e4 LT |
1201 | #endif |
1202 | { | |
1da177e4 LT |
1203 | .procname = "lowmem_reserve_ratio", |
1204 | .data = &sysctl_lowmem_reserve_ratio, | |
1205 | .maxlen = sizeof(sysctl_lowmem_reserve_ratio), | |
1206 | .mode = 0644, | |
6d456111 | 1207 | .proc_handler = lowmem_reserve_ratio_sysctl_handler, |
1da177e4 | 1208 | }, |
9d0243bc | 1209 | { |
9d0243bc AM |
1210 | .procname = "drop_caches", |
1211 | .data = &sysctl_drop_caches, | |
1212 | .maxlen = sizeof(int), | |
1213 | .mode = 0644, | |
1214 | .proc_handler = drop_caches_sysctl_handler, | |
cb16e95f PH |
1215 | .extra1 = &one, |
1216 | .extra2 = &three, | |
9d0243bc | 1217 | }, |
76ab0f53 MG |
1218 | #ifdef CONFIG_COMPACTION |
1219 | { | |
1220 | .procname = "compact_memory", | |
1221 | .data = &sysctl_compact_memory, | |
1222 | .maxlen = sizeof(int), | |
1223 | .mode = 0200, | |
1224 | .proc_handler = sysctl_compaction_handler, | |
1225 | }, | |
5e771905 MG |
1226 | { |
1227 | .procname = "extfrag_threshold", | |
1228 | .data = &sysctl_extfrag_threshold, | |
1229 | .maxlen = sizeof(int), | |
1230 | .mode = 0644, | |
1231 | .proc_handler = sysctl_extfrag_handler, | |
1232 | .extra1 = &min_extfrag_threshold, | |
1233 | .extra2 = &max_extfrag_threshold, | |
1234 | }, | |
1235 | ||
76ab0f53 | 1236 | #endif /* CONFIG_COMPACTION */ |
1da177e4 | 1237 | { |
1da177e4 LT |
1238 | .procname = "min_free_kbytes", |
1239 | .data = &min_free_kbytes, | |
1240 | .maxlen = sizeof(min_free_kbytes), | |
1241 | .mode = 0644, | |
6d456111 | 1242 | .proc_handler = min_free_kbytes_sysctl_handler, |
1da177e4 LT |
1243 | .extra1 = &zero, |
1244 | }, | |
8ad4b1fb | 1245 | { |
8ad4b1fb RS |
1246 | .procname = "percpu_pagelist_fraction", |
1247 | .data = &percpu_pagelist_fraction, | |
1248 | .maxlen = sizeof(percpu_pagelist_fraction), | |
1249 | .mode = 0644, | |
6d456111 | 1250 | .proc_handler = percpu_pagelist_fraction_sysctl_handler, |
8ad4b1fb RS |
1251 | .extra1 = &min_percpu_pagelist_fract, |
1252 | }, | |
1da177e4 LT |
1253 | #ifdef CONFIG_MMU |
1254 | { | |
1da177e4 LT |
1255 | .procname = "max_map_count", |
1256 | .data = &sysctl_max_map_count, | |
1257 | .maxlen = sizeof(sysctl_max_map_count), | |
1258 | .mode = 0644, | |
3e26120c | 1259 | .proc_handler = proc_dointvec_minmax, |
70da2340 | 1260 | .extra1 = &zero, |
1da177e4 | 1261 | }, |
dd8632a1 PM |
1262 | #else |
1263 | { | |
dd8632a1 PM |
1264 | .procname = "nr_trim_pages", |
1265 | .data = &sysctl_nr_trim_pages, | |
1266 | .maxlen = sizeof(sysctl_nr_trim_pages), | |
1267 | .mode = 0644, | |
6d456111 | 1268 | .proc_handler = proc_dointvec_minmax, |
dd8632a1 PM |
1269 | .extra1 = &zero, |
1270 | }, | |
1da177e4 LT |
1271 | #endif |
1272 | { | |
1da177e4 LT |
1273 | .procname = "laptop_mode", |
1274 | .data = &laptop_mode, | |
1275 | .maxlen = sizeof(laptop_mode), | |
1276 | .mode = 0644, | |
6d456111 | 1277 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1278 | }, |
1279 | { | |
1da177e4 LT |
1280 | .procname = "block_dump", |
1281 | .data = &block_dump, | |
1282 | .maxlen = sizeof(block_dump), | |
1283 | .mode = 0644, | |
6d456111 | 1284 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1285 | .extra1 = &zero, |
1286 | }, | |
1287 | { | |
1da177e4 LT |
1288 | .procname = "vfs_cache_pressure", |
1289 | .data = &sysctl_vfs_cache_pressure, | |
1290 | .maxlen = sizeof(sysctl_vfs_cache_pressure), | |
1291 | .mode = 0644, | |
6d456111 | 1292 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1293 | .extra1 = &zero, |
1294 | }, | |
1295 | #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT | |
1296 | { | |
1da177e4 LT |
1297 | .procname = "legacy_va_layout", |
1298 | .data = &sysctl_legacy_va_layout, | |
1299 | .maxlen = sizeof(sysctl_legacy_va_layout), | |
1300 | .mode = 0644, | |
6d456111 | 1301 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1302 | .extra1 = &zero, |
1303 | }, | |
1304 | #endif | |
1743660b CL |
1305 | #ifdef CONFIG_NUMA |
1306 | { | |
1743660b CL |
1307 | .procname = "zone_reclaim_mode", |
1308 | .data = &zone_reclaim_mode, | |
1309 | .maxlen = sizeof(zone_reclaim_mode), | |
1310 | .mode = 0644, | |
6d456111 | 1311 | .proc_handler = proc_dointvec, |
c84db23c | 1312 | .extra1 = &zero, |
1743660b | 1313 | }, |
9614634f | 1314 | { |
9614634f CL |
1315 | .procname = "min_unmapped_ratio", |
1316 | .data = &sysctl_min_unmapped_ratio, | |
1317 | .maxlen = sizeof(sysctl_min_unmapped_ratio), | |
1318 | .mode = 0644, | |
6d456111 | 1319 | .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler, |
9614634f CL |
1320 | .extra1 = &zero, |
1321 | .extra2 = &one_hundred, | |
1322 | }, | |
0ff38490 | 1323 | { |
0ff38490 CL |
1324 | .procname = "min_slab_ratio", |
1325 | .data = &sysctl_min_slab_ratio, | |
1326 | .maxlen = sizeof(sysctl_min_slab_ratio), | |
1327 | .mode = 0644, | |
6d456111 | 1328 | .proc_handler = sysctl_min_slab_ratio_sysctl_handler, |
0ff38490 CL |
1329 | .extra1 = &zero, |
1330 | .extra2 = &one_hundred, | |
1331 | }, | |
e6e5494c | 1332 | #endif |
77461ab3 CL |
1333 | #ifdef CONFIG_SMP |
1334 | { | |
77461ab3 CL |
1335 | .procname = "stat_interval", |
1336 | .data = &sysctl_stat_interval, | |
1337 | .maxlen = sizeof(sysctl_stat_interval), | |
1338 | .mode = 0644, | |
6d456111 | 1339 | .proc_handler = proc_dointvec_jiffies, |
77461ab3 CL |
1340 | }, |
1341 | #endif | |
6e141546 | 1342 | #ifdef CONFIG_MMU |
ed032189 | 1343 | { |
ed032189 | 1344 | .procname = "mmap_min_addr", |
788084ab EP |
1345 | .data = &dac_mmap_min_addr, |
1346 | .maxlen = sizeof(unsigned long), | |
ed032189 | 1347 | .mode = 0644, |
6d456111 | 1348 | .proc_handler = mmap_min_addr_handler, |
ed032189 | 1349 | }, |
6e141546 | 1350 | #endif |
f0c0b2b8 KH |
1351 | #ifdef CONFIG_NUMA |
1352 | { | |
f0c0b2b8 KH |
1353 | .procname = "numa_zonelist_order", |
1354 | .data = &numa_zonelist_order, | |
1355 | .maxlen = NUMA_ZONELIST_ORDER_LEN, | |
1356 | .mode = 0644, | |
6d456111 | 1357 | .proc_handler = numa_zonelist_order_handler, |
f0c0b2b8 KH |
1358 | }, |
1359 | #endif | |
2b8232ce | 1360 | #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ |
5c36e657 | 1361 | (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) |
e6e5494c | 1362 | { |
e6e5494c IM |
1363 | .procname = "vdso_enabled", |
1364 | .data = &vdso_enabled, | |
1365 | .maxlen = sizeof(vdso_enabled), | |
1366 | .mode = 0644, | |
6d456111 | 1367 | .proc_handler = proc_dointvec, |
e6e5494c IM |
1368 | .extra1 = &zero, |
1369 | }, | |
1da177e4 | 1370 | #endif |
195cf453 BG |
1371 | #ifdef CONFIG_HIGHMEM |
1372 | { | |
195cf453 BG |
1373 | .procname = "highmem_is_dirtyable", |
1374 | .data = &vm_highmem_is_dirtyable, | |
1375 | .maxlen = sizeof(vm_highmem_is_dirtyable), | |
1376 | .mode = 0644, | |
6d456111 | 1377 | .proc_handler = proc_dointvec_minmax, |
195cf453 BG |
1378 | .extra1 = &zero, |
1379 | .extra2 = &one, | |
1380 | }, | |
1381 | #endif | |
4be6f6bb | 1382 | { |
4be6f6bb PZ |
1383 | .procname = "scan_unevictable_pages", |
1384 | .data = &scan_unevictable_pages, | |
1385 | .maxlen = sizeof(scan_unevictable_pages), | |
1386 | .mode = 0644, | |
6d456111 | 1387 | .proc_handler = scan_unevictable_handler, |
4be6f6bb | 1388 | }, |
6a46079c AK |
1389 | #ifdef CONFIG_MEMORY_FAILURE |
1390 | { | |
6a46079c AK |
1391 | .procname = "memory_failure_early_kill", |
1392 | .data = &sysctl_memory_failure_early_kill, | |
1393 | .maxlen = sizeof(sysctl_memory_failure_early_kill), | |
1394 | .mode = 0644, | |
6d456111 | 1395 | .proc_handler = proc_dointvec_minmax, |
6a46079c AK |
1396 | .extra1 = &zero, |
1397 | .extra2 = &one, | |
1398 | }, | |
1399 | { | |
6a46079c AK |
1400 | .procname = "memory_failure_recovery", |
1401 | .data = &sysctl_memory_failure_recovery, | |
1402 | .maxlen = sizeof(sysctl_memory_failure_recovery), | |
1403 | .mode = 0644, | |
6d456111 | 1404 | .proc_handler = proc_dointvec_minmax, |
6a46079c AK |
1405 | .extra1 = &zero, |
1406 | .extra2 = &one, | |
1407 | }, | |
1408 | #endif | |
6fce56ec | 1409 | { } |
1da177e4 LT |
1410 | }; |
1411 | ||
2abc26fc | 1412 | #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
d8217f07 | 1413 | static struct ctl_table binfmt_misc_table[] = { |
6fce56ec | 1414 | { } |
2abc26fc EB |
1415 | }; |
1416 | #endif | |
1417 | ||
d8217f07 | 1418 | static struct ctl_table fs_table[] = { |
1da177e4 | 1419 | { |
1da177e4 LT |
1420 | .procname = "inode-nr", |
1421 | .data = &inodes_stat, | |
1422 | .maxlen = 2*sizeof(int), | |
1423 | .mode = 0444, | |
cffbc8aa | 1424 | .proc_handler = proc_nr_inodes, |
1da177e4 LT |
1425 | }, |
1426 | { | |
1da177e4 LT |
1427 | .procname = "inode-state", |
1428 | .data = &inodes_stat, | |
1429 | .maxlen = 7*sizeof(int), | |
1430 | .mode = 0444, | |
cffbc8aa | 1431 | .proc_handler = proc_nr_inodes, |
1da177e4 LT |
1432 | }, |
1433 | { | |
1da177e4 LT |
1434 | .procname = "file-nr", |
1435 | .data = &files_stat, | |
518de9b3 | 1436 | .maxlen = sizeof(files_stat), |
1da177e4 | 1437 | .mode = 0444, |
6d456111 | 1438 | .proc_handler = proc_nr_files, |
1da177e4 LT |
1439 | }, |
1440 | { | |
1da177e4 LT |
1441 | .procname = "file-max", |
1442 | .data = &files_stat.max_files, | |
518de9b3 | 1443 | .maxlen = sizeof(files_stat.max_files), |
1da177e4 | 1444 | .mode = 0644, |
518de9b3 | 1445 | .proc_handler = proc_doulongvec_minmax, |
1da177e4 | 1446 | }, |
9cfe015a | 1447 | { |
9cfe015a ED |
1448 | .procname = "nr_open", |
1449 | .data = &sysctl_nr_open, | |
1450 | .maxlen = sizeof(int), | |
1451 | .mode = 0644, | |
6d456111 | 1452 | .proc_handler = proc_dointvec_minmax, |
eceea0b3 AV |
1453 | .extra1 = &sysctl_nr_open_min, |
1454 | .extra2 = &sysctl_nr_open_max, | |
9cfe015a | 1455 | }, |
1da177e4 | 1456 | { |
1da177e4 LT |
1457 | .procname = "dentry-state", |
1458 | .data = &dentry_stat, | |
1459 | .maxlen = 6*sizeof(int), | |
1460 | .mode = 0444, | |
312d3ca8 | 1461 | .proc_handler = proc_nr_dentry, |
1da177e4 LT |
1462 | }, |
1463 | { | |
1da177e4 LT |
1464 | .procname = "overflowuid", |
1465 | .data = &fs_overflowuid, | |
1466 | .maxlen = sizeof(int), | |
1467 | .mode = 0644, | |
6d456111 | 1468 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
1469 | .extra1 = &minolduid, |
1470 | .extra2 = &maxolduid, | |
1471 | }, | |
1472 | { | |
1da177e4 LT |
1473 | .procname = "overflowgid", |
1474 | .data = &fs_overflowgid, | |
1475 | .maxlen = sizeof(int), | |
1476 | .mode = 0644, | |
6d456111 | 1477 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
1478 | .extra1 = &minolduid, |
1479 | .extra2 = &maxolduid, | |
1480 | }, | |
bfcd17a6 | 1481 | #ifdef CONFIG_FILE_LOCKING |
1da177e4 | 1482 | { |
1da177e4 LT |
1483 | .procname = "leases-enable", |
1484 | .data = &leases_enable, | |
1485 | .maxlen = sizeof(int), | |
1486 | .mode = 0644, | |
6d456111 | 1487 | .proc_handler = proc_dointvec, |
1da177e4 | 1488 | }, |
bfcd17a6 | 1489 | #endif |
1da177e4 LT |
1490 | #ifdef CONFIG_DNOTIFY |
1491 | { | |
1da177e4 LT |
1492 | .procname = "dir-notify-enable", |
1493 | .data = &dir_notify_enable, | |
1494 | .maxlen = sizeof(int), | |
1495 | .mode = 0644, | |
6d456111 | 1496 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1497 | }, |
1498 | #endif | |
1499 | #ifdef CONFIG_MMU | |
bfcd17a6 | 1500 | #ifdef CONFIG_FILE_LOCKING |
1da177e4 | 1501 | { |
1da177e4 LT |
1502 | .procname = "lease-break-time", |
1503 | .data = &lease_break_time, | |
1504 | .maxlen = sizeof(int), | |
1505 | .mode = 0644, | |
6d456111 | 1506 | .proc_handler = proc_dointvec, |
1da177e4 | 1507 | }, |
bfcd17a6 | 1508 | #endif |
ebf3f09c | 1509 | #ifdef CONFIG_AIO |
1da177e4 | 1510 | { |
1da177e4 LT |
1511 | .procname = "aio-nr", |
1512 | .data = &aio_nr, | |
1513 | .maxlen = sizeof(aio_nr), | |
1514 | .mode = 0444, | |
6d456111 | 1515 | .proc_handler = proc_doulongvec_minmax, |
1da177e4 LT |
1516 | }, |
1517 | { | |
1da177e4 LT |
1518 | .procname = "aio-max-nr", |
1519 | .data = &aio_max_nr, | |
1520 | .maxlen = sizeof(aio_max_nr), | |
1521 | .mode = 0644, | |
6d456111 | 1522 | .proc_handler = proc_doulongvec_minmax, |
1da177e4 | 1523 | }, |
ebf3f09c | 1524 | #endif /* CONFIG_AIO */ |
2d9048e2 | 1525 | #ifdef CONFIG_INOTIFY_USER |
0399cb08 | 1526 | { |
0399cb08 RL |
1527 | .procname = "inotify", |
1528 | .mode = 0555, | |
1529 | .child = inotify_table, | |
1530 | }, | |
1531 | #endif | |
7ef9964e DL |
1532 | #ifdef CONFIG_EPOLL |
1533 | { | |
1534 | .procname = "epoll", | |
1535 | .mode = 0555, | |
1536 | .child = epoll_table, | |
1537 | }, | |
1538 | #endif | |
1da177e4 | 1539 | #endif |
800179c9 KC |
1540 | { |
1541 | .procname = "protected_symlinks", | |
1542 | .data = &sysctl_protected_symlinks, | |
1543 | .maxlen = sizeof(int), | |
1544 | .mode = 0600, | |
1545 | .proc_handler = proc_dointvec_minmax, | |
1546 | .extra1 = &zero, | |
1547 | .extra2 = &one, | |
1548 | }, | |
1549 | { | |
1550 | .procname = "protected_hardlinks", | |
1551 | .data = &sysctl_protected_hardlinks, | |
1552 | .maxlen = sizeof(int), | |
1553 | .mode = 0600, | |
1554 | .proc_handler = proc_dointvec_minmax, | |
1555 | .extra1 = &zero, | |
1556 | .extra2 = &one, | |
1557 | }, | |
d6e71144 | 1558 | { |
d6e71144 AC |
1559 | .procname = "suid_dumpable", |
1560 | .data = &suid_dumpable, | |
1561 | .maxlen = sizeof(int), | |
1562 | .mode = 0644, | |
54b50199 | 1563 | .proc_handler = proc_dointvec_minmax_coredump, |
8e654fba MW |
1564 | .extra1 = &zero, |
1565 | .extra2 = &two, | |
d6e71144 | 1566 | }, |
2abc26fc EB |
1567 | #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
1568 | { | |
2abc26fc EB |
1569 | .procname = "binfmt_misc", |
1570 | .mode = 0555, | |
1571 | .child = binfmt_misc_table, | |
1572 | }, | |
1573 | #endif | |
b492e95b | 1574 | { |
ff9da691 JA |
1575 | .procname = "pipe-max-size", |
1576 | .data = &pipe_max_size, | |
b492e95b JA |
1577 | .maxlen = sizeof(int), |
1578 | .mode = 0644, | |
ff9da691 JA |
1579 | .proc_handler = &pipe_proc_fn, |
1580 | .extra1 = &pipe_min_size, | |
b492e95b | 1581 | }, |
6fce56ec | 1582 | { } |
1da177e4 LT |
1583 | }; |
1584 | ||
d8217f07 | 1585 | static struct ctl_table debug_table[] = { |
7ac57a89 | 1586 | #ifdef CONFIG_SYSCTL_EXCEPTION_TRACE |
abd4f750 | 1587 | { |
abd4f750 MAS |
1588 | .procname = "exception-trace", |
1589 | .data = &show_unhandled_signals, | |
1590 | .maxlen = sizeof(int), | |
1591 | .mode = 0644, | |
1592 | .proc_handler = proc_dointvec | |
1593 | }, | |
b2be84df MH |
1594 | #endif |
1595 | #if defined(CONFIG_OPTPROBES) | |
1596 | { | |
1597 | .procname = "kprobes-optimization", | |
1598 | .data = &sysctl_kprobes_optimization, | |
1599 | .maxlen = sizeof(int), | |
1600 | .mode = 0644, | |
1601 | .proc_handler = proc_kprobes_optimization_handler, | |
1602 | .extra1 = &zero, | |
1603 | .extra2 = &one, | |
1604 | }, | |
abd4f750 | 1605 | #endif |
6fce56ec | 1606 | { } |
1da177e4 LT |
1607 | }; |
1608 | ||
d8217f07 | 1609 | static struct ctl_table dev_table[] = { |
6fce56ec | 1610 | { } |
0eeca283 | 1611 | }; |
1da177e4 | 1612 | |
de4e83bd | 1613 | int __init sysctl_init(void) |
d912b0cc | 1614 | { |
fd4b616b SR |
1615 | struct ctl_table_header *hdr; |
1616 | ||
1617 | hdr = register_sysctl_table(sysctl_base_table); | |
1618 | kmemleak_not_leak(hdr); | |
d912b0cc EB |
1619 | return 0; |
1620 | } | |
1621 | ||
b89a8171 EB |
1622 | #endif /* CONFIG_SYSCTL */ |
1623 | ||
1da177e4 LT |
1624 | /* |
1625 | * /proc/sys support | |
1626 | */ | |
1627 | ||
b89a8171 | 1628 | #ifdef CONFIG_PROC_SYSCTL |
1da177e4 | 1629 | |
b1ba4ddd | 1630 | static int _proc_do_string(void* data, int maxlen, int write, |
8d65af78 | 1631 | void __user *buffer, |
b1ba4ddd | 1632 | size_t *lenp, loff_t *ppos) |
1da177e4 LT |
1633 | { |
1634 | size_t len; | |
1635 | char __user *p; | |
1636 | char c; | |
8d060877 ON |
1637 | |
1638 | if (!data || !maxlen || !*lenp) { | |
1da177e4 LT |
1639 | *lenp = 0; |
1640 | return 0; | |
1641 | } | |
8d060877 | 1642 | |
1da177e4 LT |
1643 | if (write) { |
1644 | len = 0; | |
1645 | p = buffer; | |
1646 | while (len < *lenp) { | |
1647 | if (get_user(c, p++)) | |
1648 | return -EFAULT; | |
1649 | if (c == 0 || c == '\n') | |
1650 | break; | |
1651 | len++; | |
1652 | } | |
f5dd3d6f SV |
1653 | if (len >= maxlen) |
1654 | len = maxlen-1; | |
1655 | if(copy_from_user(data, buffer, len)) | |
1da177e4 | 1656 | return -EFAULT; |
f5dd3d6f | 1657 | ((char *) data)[len] = 0; |
1da177e4 LT |
1658 | *ppos += *lenp; |
1659 | } else { | |
f5dd3d6f SV |
1660 | len = strlen(data); |
1661 | if (len > maxlen) | |
1662 | len = maxlen; | |
8d060877 ON |
1663 | |
1664 | if (*ppos > len) { | |
1665 | *lenp = 0; | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | data += *ppos; | |
1670 | len -= *ppos; | |
1671 | ||
1da177e4 LT |
1672 | if (len > *lenp) |
1673 | len = *lenp; | |
1674 | if (len) | |
f5dd3d6f | 1675 | if(copy_to_user(buffer, data, len)) |
1da177e4 LT |
1676 | return -EFAULT; |
1677 | if (len < *lenp) { | |
1678 | if(put_user('\n', ((char __user *) buffer) + len)) | |
1679 | return -EFAULT; | |
1680 | len++; | |
1681 | } | |
1682 | *lenp = len; | |
1683 | *ppos += len; | |
1684 | } | |
1685 | return 0; | |
1686 | } | |
1687 | ||
f5dd3d6f SV |
1688 | /** |
1689 | * proc_dostring - read a string sysctl | |
1690 | * @table: the sysctl table | |
1691 | * @write: %TRUE if this is a write to the sysctl file | |
f5dd3d6f SV |
1692 | * @buffer: the user buffer |
1693 | * @lenp: the size of the user buffer | |
1694 | * @ppos: file position | |
1695 | * | |
1696 | * Reads/writes a string from/to the user buffer. If the kernel | |
1697 | * buffer provided is not large enough to hold the string, the | |
1698 | * string is truncated. The copied string is %NULL-terminated. | |
1699 | * If the string is being read by the user process, it is copied | |
1700 | * and a newline '\n' is added. It is truncated if the buffer is | |
1701 | * not large enough. | |
1702 | * | |
1703 | * Returns 0 on success. | |
1704 | */ | |
8d65af78 | 1705 | int proc_dostring(struct ctl_table *table, int write, |
f5dd3d6f SV |
1706 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1707 | { | |
8d65af78 | 1708 | return _proc_do_string(table->data, table->maxlen, write, |
f5dd3d6f SV |
1709 | buffer, lenp, ppos); |
1710 | } | |
1711 | ||
00b7c339 AW |
1712 | static size_t proc_skip_spaces(char **buf) |
1713 | { | |
1714 | size_t ret; | |
1715 | char *tmp = skip_spaces(*buf); | |
1716 | ret = tmp - *buf; | |
1717 | *buf = tmp; | |
1718 | return ret; | |
1719 | } | |
1720 | ||
9f977fb7 OP |
1721 | static void proc_skip_char(char **buf, size_t *size, const char v) |
1722 | { | |
1723 | while (*size) { | |
1724 | if (**buf != v) | |
1725 | break; | |
1726 | (*size)--; | |
1727 | (*buf)++; | |
1728 | } | |
1729 | } | |
1730 | ||
00b7c339 AW |
1731 | #define TMPBUFLEN 22 |
1732 | /** | |
0fc377bd | 1733 | * proc_get_long - reads an ASCII formatted integer from a user buffer |
00b7c339 | 1734 | * |
0fc377bd RD |
1735 | * @buf: a kernel buffer |
1736 | * @size: size of the kernel buffer | |
1737 | * @val: this is where the number will be stored | |
1738 | * @neg: set to %TRUE if number is negative | |
1739 | * @perm_tr: a vector which contains the allowed trailers | |
1740 | * @perm_tr_len: size of the perm_tr vector | |
1741 | * @tr: pointer to store the trailer character | |
00b7c339 | 1742 | * |
0fc377bd RD |
1743 | * In case of success %0 is returned and @buf and @size are updated with |
1744 | * the amount of bytes read. If @tr is non-NULL and a trailing | |
1745 | * character exists (size is non-zero after returning from this | |
1746 | * function), @tr is updated with the trailing character. | |
00b7c339 AW |
1747 | */ |
1748 | static int proc_get_long(char **buf, size_t *size, | |
1749 | unsigned long *val, bool *neg, | |
1750 | const char *perm_tr, unsigned perm_tr_len, char *tr) | |
1751 | { | |
1752 | int len; | |
1753 | char *p, tmp[TMPBUFLEN]; | |
1754 | ||
1755 | if (!*size) | |
1756 | return -EINVAL; | |
1757 | ||
1758 | len = *size; | |
1759 | if (len > TMPBUFLEN - 1) | |
1760 | len = TMPBUFLEN - 1; | |
1761 | ||
1762 | memcpy(tmp, *buf, len); | |
1763 | ||
1764 | tmp[len] = 0; | |
1765 | p = tmp; | |
1766 | if (*p == '-' && *size > 1) { | |
1767 | *neg = true; | |
1768 | p++; | |
1769 | } else | |
1770 | *neg = false; | |
1771 | if (!isdigit(*p)) | |
1772 | return -EINVAL; | |
1773 | ||
1774 | *val = simple_strtoul(p, &p, 0); | |
1775 | ||
1776 | len = p - tmp; | |
1777 | ||
1778 | /* We don't know if the next char is whitespace thus we may accept | |
1779 | * invalid integers (e.g. 1234...a) or two integers instead of one | |
1780 | * (e.g. 123...1). So lets not allow such large numbers. */ | |
1781 | if (len == TMPBUFLEN - 1) | |
1782 | return -EINVAL; | |
1783 | ||
1784 | if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len)) | |
1785 | return -EINVAL; | |
1da177e4 | 1786 | |
00b7c339 AW |
1787 | if (tr && (len < *size)) |
1788 | *tr = *p; | |
1789 | ||
1790 | *buf += len; | |
1791 | *size -= len; | |
1792 | ||
1793 | return 0; | |
1794 | } | |
1795 | ||
1796 | /** | |
0fc377bd | 1797 | * proc_put_long - converts an integer to a decimal ASCII formatted string |
00b7c339 | 1798 | * |
0fc377bd RD |
1799 | * @buf: the user buffer |
1800 | * @size: the size of the user buffer | |
1801 | * @val: the integer to be converted | |
1802 | * @neg: sign of the number, %TRUE for negative | |
00b7c339 | 1803 | * |
0fc377bd RD |
1804 | * In case of success %0 is returned and @buf and @size are updated with |
1805 | * the amount of bytes written. | |
00b7c339 AW |
1806 | */ |
1807 | static int proc_put_long(void __user **buf, size_t *size, unsigned long val, | |
1808 | bool neg) | |
1809 | { | |
1810 | int len; | |
1811 | char tmp[TMPBUFLEN], *p = tmp; | |
1812 | ||
1813 | sprintf(p, "%s%lu", neg ? "-" : "", val); | |
1814 | len = strlen(tmp); | |
1815 | if (len > *size) | |
1816 | len = *size; | |
1817 | if (copy_to_user(*buf, tmp, len)) | |
1818 | return -EFAULT; | |
1819 | *size -= len; | |
1820 | *buf += len; | |
1821 | return 0; | |
1822 | } | |
1823 | #undef TMPBUFLEN | |
1824 | ||
1825 | static int proc_put_char(void __user **buf, size_t *size, char c) | |
1826 | { | |
1827 | if (*size) { | |
1828 | char __user **buffer = (char __user **)buf; | |
1829 | if (put_user(c, *buffer)) | |
1830 | return -EFAULT; | |
1831 | (*size)--, (*buffer)++; | |
1832 | *buf = *buffer; | |
1833 | } | |
1834 | return 0; | |
1835 | } | |
1da177e4 | 1836 | |
00b7c339 | 1837 | static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
1838 | int *valp, |
1839 | int write, void *data) | |
1840 | { | |
1841 | if (write) { | |
1842 | *valp = *negp ? -*lvalp : *lvalp; | |
1843 | } else { | |
1844 | int val = *valp; | |
1845 | if (val < 0) { | |
00b7c339 | 1846 | *negp = true; |
1da177e4 LT |
1847 | *lvalp = (unsigned long)-val; |
1848 | } else { | |
00b7c339 | 1849 | *negp = false; |
1da177e4 LT |
1850 | *lvalp = (unsigned long)val; |
1851 | } | |
1852 | } | |
1853 | return 0; | |
1854 | } | |
1855 | ||
00b7c339 AW |
1856 | static const char proc_wspace_sep[] = { ' ', '\t', '\n' }; |
1857 | ||
d8217f07 | 1858 | static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, |
8d65af78 | 1859 | int write, void __user *buffer, |
fcfbd547 | 1860 | size_t *lenp, loff_t *ppos, |
00b7c339 | 1861 | int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
1da177e4 LT |
1862 | int write, void *data), |
1863 | void *data) | |
1864 | { | |
00b7c339 AW |
1865 | int *i, vleft, first = 1, err = 0; |
1866 | unsigned long page = 0; | |
1867 | size_t left; | |
1868 | char *kbuf; | |
1da177e4 | 1869 | |
00b7c339 | 1870 | if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) { |
1da177e4 LT |
1871 | *lenp = 0; |
1872 | return 0; | |
1873 | } | |
1874 | ||
fcfbd547 | 1875 | i = (int *) tbl_data; |
1da177e4 LT |
1876 | vleft = table->maxlen / sizeof(*i); |
1877 | left = *lenp; | |
1878 | ||
1879 | if (!conv) | |
1880 | conv = do_proc_dointvec_conv; | |
1881 | ||
00b7c339 AW |
1882 | if (write) { |
1883 | if (left > PAGE_SIZE - 1) | |
1884 | left = PAGE_SIZE - 1; | |
1885 | page = __get_free_page(GFP_TEMPORARY); | |
1886 | kbuf = (char *) page; | |
1887 | if (!kbuf) | |
1888 | return -ENOMEM; | |
1889 | if (copy_from_user(kbuf, buffer, left)) { | |
1890 | err = -EFAULT; | |
1891 | goto free; | |
1892 | } | |
1893 | kbuf[left] = 0; | |
1894 | } | |
1895 | ||
1da177e4 | 1896 | for (; left && vleft--; i++, first=0) { |
00b7c339 AW |
1897 | unsigned long lval; |
1898 | bool neg; | |
1da177e4 | 1899 | |
00b7c339 AW |
1900 | if (write) { |
1901 | left -= proc_skip_spaces(&kbuf); | |
1da177e4 | 1902 | |
563b0467 O |
1903 | if (!left) |
1904 | break; | |
00b7c339 AW |
1905 | err = proc_get_long(&kbuf, &left, &lval, &neg, |
1906 | proc_wspace_sep, | |
1907 | sizeof(proc_wspace_sep), NULL); | |
1908 | if (err) | |
1da177e4 | 1909 | break; |
00b7c339 AW |
1910 | if (conv(&neg, &lval, i, 1, data)) { |
1911 | err = -EINVAL; | |
1da177e4 | 1912 | break; |
00b7c339 | 1913 | } |
1da177e4 | 1914 | } else { |
00b7c339 AW |
1915 | if (conv(&neg, &lval, i, 0, data)) { |
1916 | err = -EINVAL; | |
1917 | break; | |
1918 | } | |
1da177e4 | 1919 | if (!first) |
00b7c339 AW |
1920 | err = proc_put_char(&buffer, &left, '\t'); |
1921 | if (err) | |
1922 | break; | |
1923 | err = proc_put_long(&buffer, &left, lval, neg); | |
1924 | if (err) | |
1da177e4 | 1925 | break; |
1da177e4 LT |
1926 | } |
1927 | } | |
1928 | ||
00b7c339 AW |
1929 | if (!write && !first && left && !err) |
1930 | err = proc_put_char(&buffer, &left, '\n'); | |
563b0467 | 1931 | if (write && !err && left) |
00b7c339 AW |
1932 | left -= proc_skip_spaces(&kbuf); |
1933 | free: | |
1da177e4 | 1934 | if (write) { |
00b7c339 AW |
1935 | free_page(page); |
1936 | if (first) | |
1937 | return err ? : -EINVAL; | |
1da177e4 | 1938 | } |
1da177e4 LT |
1939 | *lenp -= left; |
1940 | *ppos += *lenp; | |
00b7c339 | 1941 | return err; |
1da177e4 LT |
1942 | } |
1943 | ||
8d65af78 | 1944 | static int do_proc_dointvec(struct ctl_table *table, int write, |
fcfbd547 | 1945 | void __user *buffer, size_t *lenp, loff_t *ppos, |
00b7c339 | 1946 | int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
fcfbd547 KK |
1947 | int write, void *data), |
1948 | void *data) | |
1949 | { | |
8d65af78 | 1950 | return __do_proc_dointvec(table->data, table, write, |
fcfbd547 KK |
1951 | buffer, lenp, ppos, conv, data); |
1952 | } | |
1953 | ||
1da177e4 LT |
1954 | /** |
1955 | * proc_dointvec - read a vector of integers | |
1956 | * @table: the sysctl table | |
1957 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
1958 | * @buffer: the user buffer |
1959 | * @lenp: the size of the user buffer | |
1960 | * @ppos: file position | |
1961 | * | |
1962 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
1963 | * values from/to the user buffer, treated as an ASCII string. | |
1964 | * | |
1965 | * Returns 0 on success. | |
1966 | */ | |
8d65af78 | 1967 | int proc_dointvec(struct ctl_table *table, int write, |
1da177e4 LT |
1968 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1969 | { | |
8d65af78 | 1970 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4 LT |
1971 | NULL,NULL); |
1972 | } | |
1973 | ||
34f5a398 | 1974 | /* |
25ddbb18 AK |
1975 | * Taint values can only be increased |
1976 | * This means we can safely use a temporary. | |
34f5a398 | 1977 | */ |
8d65af78 | 1978 | static int proc_taint(struct ctl_table *table, int write, |
34f5a398 TT |
1979 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1980 | { | |
25ddbb18 AK |
1981 | struct ctl_table t; |
1982 | unsigned long tmptaint = get_taint(); | |
1983 | int err; | |
34f5a398 | 1984 | |
91fcd412 | 1985 | if (write && !capable(CAP_SYS_ADMIN)) |
34f5a398 TT |
1986 | return -EPERM; |
1987 | ||
25ddbb18 AK |
1988 | t = *table; |
1989 | t.data = &tmptaint; | |
8d65af78 | 1990 | err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos); |
25ddbb18 AK |
1991 | if (err < 0) |
1992 | return err; | |
1993 | ||
1994 | if (write) { | |
1995 | /* | |
1996 | * Poor man's atomic or. Not worth adding a primitive | |
1997 | * to everyone's atomic.h for this | |
1998 | */ | |
1999 | int i; | |
2000 | for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) { | |
2001 | if ((tmptaint >> i) & 1) | |
2002 | add_taint(i); | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | return err; | |
34f5a398 TT |
2007 | } |
2008 | ||
bfdc0b49 | 2009 | #ifdef CONFIG_PRINTK |
620f6e8e | 2010 | static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
bfdc0b49 RW |
2011 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2012 | { | |
2013 | if (write && !capable(CAP_SYS_ADMIN)) | |
2014 | return -EPERM; | |
2015 | ||
2016 | return proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
2017 | } | |
2018 | #endif | |
2019 | ||
1da177e4 LT |
2020 | struct do_proc_dointvec_minmax_conv_param { |
2021 | int *min; | |
2022 | int *max; | |
2023 | }; | |
2024 | ||
00b7c339 AW |
2025 | static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp, |
2026 | int *valp, | |
1da177e4 LT |
2027 | int write, void *data) |
2028 | { | |
2029 | struct do_proc_dointvec_minmax_conv_param *param = data; | |
2030 | if (write) { | |
2031 | int val = *negp ? -*lvalp : *lvalp; | |
2032 | if ((param->min && *param->min > val) || | |
2033 | (param->max && *param->max < val)) | |
2034 | return -EINVAL; | |
2035 | *valp = val; | |
2036 | } else { | |
2037 | int val = *valp; | |
2038 | if (val < 0) { | |
00b7c339 | 2039 | *negp = true; |
1da177e4 LT |
2040 | *lvalp = (unsigned long)-val; |
2041 | } else { | |
00b7c339 | 2042 | *negp = false; |
1da177e4 LT |
2043 | *lvalp = (unsigned long)val; |
2044 | } | |
2045 | } | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | /** | |
2050 | * proc_dointvec_minmax - read a vector of integers with min/max values | |
2051 | * @table: the sysctl table | |
2052 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2053 | * @buffer: the user buffer |
2054 | * @lenp: the size of the user buffer | |
2055 | * @ppos: file position | |
2056 | * | |
2057 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
2058 | * values from/to the user buffer, treated as an ASCII string. | |
2059 | * | |
2060 | * This routine will ensure the values are within the range specified by | |
2061 | * table->extra1 (min) and table->extra2 (max). | |
2062 | * | |
2063 | * Returns 0 on success. | |
2064 | */ | |
8d65af78 | 2065 | int proc_dointvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2066 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2067 | { | |
2068 | struct do_proc_dointvec_minmax_conv_param param = { | |
2069 | .min = (int *) table->extra1, | |
2070 | .max = (int *) table->extra2, | |
2071 | }; | |
8d65af78 | 2072 | return do_proc_dointvec(table, write, buffer, lenp, ppos, |
1da177e4 LT |
2073 | do_proc_dointvec_minmax_conv, ¶m); |
2074 | } | |
2075 | ||
54b50199 KC |
2076 | static void validate_coredump_safety(void) |
2077 | { | |
046d662f | 2078 | #ifdef CONFIG_COREDUMP |
54b50199 KC |
2079 | if (suid_dumpable == SUID_DUMPABLE_SAFE && |
2080 | core_pattern[0] != '/' && core_pattern[0] != '|') { | |
2081 | printk(KERN_WARNING "Unsafe core_pattern used with "\ | |
2082 | "suid_dumpable=2. Pipe handler or fully qualified "\ | |
2083 | "core dump path required.\n"); | |
2084 | } | |
046d662f | 2085 | #endif |
54b50199 KC |
2086 | } |
2087 | ||
2088 | static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, | |
2089 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2090 | { | |
2091 | int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
2092 | if (!error) | |
2093 | validate_coredump_safety(); | |
2094 | return error; | |
2095 | } | |
2096 | ||
046d662f | 2097 | #ifdef CONFIG_COREDUMP |
54b50199 KC |
2098 | static int proc_dostring_coredump(struct ctl_table *table, int write, |
2099 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2100 | { | |
2101 | int error = proc_dostring(table, write, buffer, lenp, ppos); | |
2102 | if (!error) | |
2103 | validate_coredump_safety(); | |
2104 | return error; | |
2105 | } | |
046d662f | 2106 | #endif |
54b50199 | 2107 | |
d8217f07 | 2108 | static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, |
1da177e4 LT |
2109 | void __user *buffer, |
2110 | size_t *lenp, loff_t *ppos, | |
2111 | unsigned long convmul, | |
2112 | unsigned long convdiv) | |
2113 | { | |
00b7c339 AW |
2114 | unsigned long *i, *min, *max; |
2115 | int vleft, first = 1, err = 0; | |
2116 | unsigned long page = 0; | |
2117 | size_t left; | |
2118 | char *kbuf; | |
2119 | ||
2120 | if (!data || !table->maxlen || !*lenp || (*ppos && !write)) { | |
1da177e4 LT |
2121 | *lenp = 0; |
2122 | return 0; | |
2123 | } | |
00b7c339 | 2124 | |
fcfbd547 | 2125 | i = (unsigned long *) data; |
1da177e4 LT |
2126 | min = (unsigned long *) table->extra1; |
2127 | max = (unsigned long *) table->extra2; | |
2128 | vleft = table->maxlen / sizeof(unsigned long); | |
2129 | left = *lenp; | |
00b7c339 AW |
2130 | |
2131 | if (write) { | |
2132 | if (left > PAGE_SIZE - 1) | |
2133 | left = PAGE_SIZE - 1; | |
2134 | page = __get_free_page(GFP_TEMPORARY); | |
2135 | kbuf = (char *) page; | |
2136 | if (!kbuf) | |
2137 | return -ENOMEM; | |
2138 | if (copy_from_user(kbuf, buffer, left)) { | |
2139 | err = -EFAULT; | |
2140 | goto free; | |
2141 | } | |
2142 | kbuf[left] = 0; | |
2143 | } | |
2144 | ||
27b3d80a | 2145 | for (; left && vleft--; i++, first = 0) { |
00b7c339 AW |
2146 | unsigned long val; |
2147 | ||
1da177e4 | 2148 | if (write) { |
00b7c339 AW |
2149 | bool neg; |
2150 | ||
2151 | left -= proc_skip_spaces(&kbuf); | |
2152 | ||
2153 | err = proc_get_long(&kbuf, &left, &val, &neg, | |
2154 | proc_wspace_sep, | |
2155 | sizeof(proc_wspace_sep), NULL); | |
2156 | if (err) | |
1da177e4 LT |
2157 | break; |
2158 | if (neg) | |
1da177e4 LT |
2159 | continue; |
2160 | if ((min && val < *min) || (max && val > *max)) | |
2161 | continue; | |
2162 | *i = val; | |
2163 | } else { | |
00b7c339 | 2164 | val = convdiv * (*i) / convmul; |
1da177e4 | 2165 | if (!first) |
00b7c339 AW |
2166 | err = proc_put_char(&buffer, &left, '\t'); |
2167 | err = proc_put_long(&buffer, &left, val, false); | |
2168 | if (err) | |
2169 | break; | |
1da177e4 LT |
2170 | } |
2171 | } | |
2172 | ||
00b7c339 AW |
2173 | if (!write && !first && left && !err) |
2174 | err = proc_put_char(&buffer, &left, '\n'); | |
2175 | if (write && !err) | |
2176 | left -= proc_skip_spaces(&kbuf); | |
2177 | free: | |
1da177e4 | 2178 | if (write) { |
00b7c339 AW |
2179 | free_page(page); |
2180 | if (first) | |
2181 | return err ? : -EINVAL; | |
1da177e4 | 2182 | } |
1da177e4 LT |
2183 | *lenp -= left; |
2184 | *ppos += *lenp; | |
00b7c339 | 2185 | return err; |
1da177e4 LT |
2186 | } |
2187 | ||
d8217f07 | 2188 | static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, |
fcfbd547 KK |
2189 | void __user *buffer, |
2190 | size_t *lenp, loff_t *ppos, | |
2191 | unsigned long convmul, | |
2192 | unsigned long convdiv) | |
2193 | { | |
2194 | return __do_proc_doulongvec_minmax(table->data, table, write, | |
8d65af78 | 2195 | buffer, lenp, ppos, convmul, convdiv); |
fcfbd547 KK |
2196 | } |
2197 | ||
1da177e4 LT |
2198 | /** |
2199 | * proc_doulongvec_minmax - read a vector of long integers with min/max values | |
2200 | * @table: the sysctl table | |
2201 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2202 | * @buffer: the user buffer |
2203 | * @lenp: the size of the user buffer | |
2204 | * @ppos: file position | |
2205 | * | |
2206 | * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long | |
2207 | * values from/to the user buffer, treated as an ASCII string. | |
2208 | * | |
2209 | * This routine will ensure the values are within the range specified by | |
2210 | * table->extra1 (min) and table->extra2 (max). | |
2211 | * | |
2212 | * Returns 0 on success. | |
2213 | */ | |
8d65af78 | 2214 | int proc_doulongvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2215 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2216 | { | |
8d65af78 | 2217 | return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l); |
1da177e4 LT |
2218 | } |
2219 | ||
2220 | /** | |
2221 | * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values | |
2222 | * @table: the sysctl table | |
2223 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2224 | * @buffer: the user buffer |
2225 | * @lenp: the size of the user buffer | |
2226 | * @ppos: file position | |
2227 | * | |
2228 | * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long | |
2229 | * values from/to the user buffer, treated as an ASCII string. The values | |
2230 | * are treated as milliseconds, and converted to jiffies when they are stored. | |
2231 | * | |
2232 | * This routine will ensure the values are within the range specified by | |
2233 | * table->extra1 (min) and table->extra2 (max). | |
2234 | * | |
2235 | * Returns 0 on success. | |
2236 | */ | |
d8217f07 | 2237 | int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2238 | void __user *buffer, |
2239 | size_t *lenp, loff_t *ppos) | |
2240 | { | |
8d65af78 | 2241 | return do_proc_doulongvec_minmax(table, write, buffer, |
1da177e4 LT |
2242 | lenp, ppos, HZ, 1000l); |
2243 | } | |
2244 | ||
2245 | ||
00b7c339 | 2246 | static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
2247 | int *valp, |
2248 | int write, void *data) | |
2249 | { | |
2250 | if (write) { | |
cba9f33d BS |
2251 | if (*lvalp > LONG_MAX / HZ) |
2252 | return 1; | |
1da177e4 LT |
2253 | *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ); |
2254 | } else { | |
2255 | int val = *valp; | |
2256 | unsigned long lval; | |
2257 | if (val < 0) { | |
00b7c339 | 2258 | *negp = true; |
1da177e4 LT |
2259 | lval = (unsigned long)-val; |
2260 | } else { | |
00b7c339 | 2261 | *negp = false; |
1da177e4 LT |
2262 | lval = (unsigned long)val; |
2263 | } | |
2264 | *lvalp = lval / HZ; | |
2265 | } | |
2266 | return 0; | |
2267 | } | |
2268 | ||
00b7c339 | 2269 | static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
2270 | int *valp, |
2271 | int write, void *data) | |
2272 | { | |
2273 | if (write) { | |
cba9f33d BS |
2274 | if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ) |
2275 | return 1; | |
1da177e4 LT |
2276 | *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp); |
2277 | } else { | |
2278 | int val = *valp; | |
2279 | unsigned long lval; | |
2280 | if (val < 0) { | |
00b7c339 | 2281 | *negp = true; |
1da177e4 LT |
2282 | lval = (unsigned long)-val; |
2283 | } else { | |
00b7c339 | 2284 | *negp = false; |
1da177e4 LT |
2285 | lval = (unsigned long)val; |
2286 | } | |
2287 | *lvalp = jiffies_to_clock_t(lval); | |
2288 | } | |
2289 | return 0; | |
2290 | } | |
2291 | ||
00b7c339 | 2292 | static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
2293 | int *valp, |
2294 | int write, void *data) | |
2295 | { | |
2296 | if (write) { | |
2297 | *valp = msecs_to_jiffies(*negp ? -*lvalp : *lvalp); | |
2298 | } else { | |
2299 | int val = *valp; | |
2300 | unsigned long lval; | |
2301 | if (val < 0) { | |
00b7c339 | 2302 | *negp = true; |
1da177e4 LT |
2303 | lval = (unsigned long)-val; |
2304 | } else { | |
00b7c339 | 2305 | *negp = false; |
1da177e4 LT |
2306 | lval = (unsigned long)val; |
2307 | } | |
2308 | *lvalp = jiffies_to_msecs(lval); | |
2309 | } | |
2310 | return 0; | |
2311 | } | |
2312 | ||
2313 | /** | |
2314 | * proc_dointvec_jiffies - read a vector of integers as seconds | |
2315 | * @table: the sysctl table | |
2316 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2317 | * @buffer: the user buffer |
2318 | * @lenp: the size of the user buffer | |
2319 | * @ppos: file position | |
2320 | * | |
2321 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
2322 | * values from/to the user buffer, treated as an ASCII string. | |
2323 | * The values read are assumed to be in seconds, and are converted into | |
2324 | * jiffies. | |
2325 | * | |
2326 | * Returns 0 on success. | |
2327 | */ | |
8d65af78 | 2328 | int proc_dointvec_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
2329 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2330 | { | |
8d65af78 | 2331 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4 LT |
2332 | do_proc_dointvec_jiffies_conv,NULL); |
2333 | } | |
2334 | ||
2335 | /** | |
2336 | * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds | |
2337 | * @table: the sysctl table | |
2338 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2339 | * @buffer: the user buffer |
2340 | * @lenp: the size of the user buffer | |
1e5d5331 | 2341 | * @ppos: pointer to the file position |
1da177e4 LT |
2342 | * |
2343 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
2344 | * values from/to the user buffer, treated as an ASCII string. | |
2345 | * The values read are assumed to be in 1/USER_HZ seconds, and | |
2346 | * are converted into jiffies. | |
2347 | * | |
2348 | * Returns 0 on success. | |
2349 | */ | |
8d65af78 | 2350 | int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
2351 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2352 | { | |
8d65af78 | 2353 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4 LT |
2354 | do_proc_dointvec_userhz_jiffies_conv,NULL); |
2355 | } | |
2356 | ||
2357 | /** | |
2358 | * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds | |
2359 | * @table: the sysctl table | |
2360 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2361 | * @buffer: the user buffer |
2362 | * @lenp: the size of the user buffer | |
67be2dd1 MW |
2363 | * @ppos: file position |
2364 | * @ppos: the current position in the file | |
1da177e4 LT |
2365 | * |
2366 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
2367 | * values from/to the user buffer, treated as an ASCII string. | |
2368 | * The values read are assumed to be in 1/1000 seconds, and | |
2369 | * are converted into jiffies. | |
2370 | * | |
2371 | * Returns 0 on success. | |
2372 | */ | |
8d65af78 | 2373 | int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
2374 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2375 | { | |
8d65af78 | 2376 | return do_proc_dointvec(table, write, buffer, lenp, ppos, |
1da177e4 LT |
2377 | do_proc_dointvec_ms_jiffies_conv, NULL); |
2378 | } | |
2379 | ||
8d65af78 | 2380 | static int proc_do_cad_pid(struct ctl_table *table, int write, |
9ec52099 CLG |
2381 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2382 | { | |
2383 | struct pid *new_pid; | |
2384 | pid_t tmp; | |
2385 | int r; | |
2386 | ||
6c5f3e7b | 2387 | tmp = pid_vnr(cad_pid); |
9ec52099 | 2388 | |
8d65af78 | 2389 | r = __do_proc_dointvec(&tmp, table, write, buffer, |
9ec52099 CLG |
2390 | lenp, ppos, NULL, NULL); |
2391 | if (r || !write) | |
2392 | return r; | |
2393 | ||
2394 | new_pid = find_get_pid(tmp); | |
2395 | if (!new_pid) | |
2396 | return -ESRCH; | |
2397 | ||
2398 | put_pid(xchg(&cad_pid, new_pid)); | |
2399 | return 0; | |
2400 | } | |
2401 | ||
9f977fb7 OP |
2402 | /** |
2403 | * proc_do_large_bitmap - read/write from/to a large bitmap | |
2404 | * @table: the sysctl table | |
2405 | * @write: %TRUE if this is a write to the sysctl file | |
2406 | * @buffer: the user buffer | |
2407 | * @lenp: the size of the user buffer | |
2408 | * @ppos: file position | |
2409 | * | |
2410 | * The bitmap is stored at table->data and the bitmap length (in bits) | |
2411 | * in table->maxlen. | |
2412 | * | |
2413 | * We use a range comma separated format (e.g. 1,3-4,10-10) so that | |
2414 | * large bitmaps may be represented in a compact manner. Writing into | |
2415 | * the file will clear the bitmap then update it with the given input. | |
2416 | * | |
2417 | * Returns 0 on success. | |
2418 | */ | |
2419 | int proc_do_large_bitmap(struct ctl_table *table, int write, | |
2420 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2421 | { | |
2422 | int err = 0; | |
2423 | bool first = 1; | |
2424 | size_t left = *lenp; | |
2425 | unsigned long bitmap_len = table->maxlen; | |
2426 | unsigned long *bitmap = (unsigned long *) table->data; | |
2427 | unsigned long *tmp_bitmap = NULL; | |
2428 | char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c; | |
2429 | ||
2430 | if (!bitmap_len || !left || (*ppos && !write)) { | |
2431 | *lenp = 0; | |
2432 | return 0; | |
2433 | } | |
2434 | ||
2435 | if (write) { | |
2436 | unsigned long page = 0; | |
2437 | char *kbuf; | |
2438 | ||
2439 | if (left > PAGE_SIZE - 1) | |
2440 | left = PAGE_SIZE - 1; | |
2441 | ||
2442 | page = __get_free_page(GFP_TEMPORARY); | |
2443 | kbuf = (char *) page; | |
2444 | if (!kbuf) | |
2445 | return -ENOMEM; | |
2446 | if (copy_from_user(kbuf, buffer, left)) { | |
2447 | free_page(page); | |
2448 | return -EFAULT; | |
2449 | } | |
2450 | kbuf[left] = 0; | |
2451 | ||
2452 | tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long), | |
2453 | GFP_KERNEL); | |
2454 | if (!tmp_bitmap) { | |
2455 | free_page(page); | |
2456 | return -ENOMEM; | |
2457 | } | |
2458 | proc_skip_char(&kbuf, &left, '\n'); | |
2459 | while (!err && left) { | |
2460 | unsigned long val_a, val_b; | |
2461 | bool neg; | |
2462 | ||
2463 | err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a, | |
2464 | sizeof(tr_a), &c); | |
2465 | if (err) | |
2466 | break; | |
2467 | if (val_a >= bitmap_len || neg) { | |
2468 | err = -EINVAL; | |
2469 | break; | |
2470 | } | |
2471 | ||
2472 | val_b = val_a; | |
2473 | if (left) { | |
2474 | kbuf++; | |
2475 | left--; | |
2476 | } | |
2477 | ||
2478 | if (c == '-') { | |
2479 | err = proc_get_long(&kbuf, &left, &val_b, | |
2480 | &neg, tr_b, sizeof(tr_b), | |
2481 | &c); | |
2482 | if (err) | |
2483 | break; | |
2484 | if (val_b >= bitmap_len || neg || | |
2485 | val_a > val_b) { | |
2486 | err = -EINVAL; | |
2487 | break; | |
2488 | } | |
2489 | if (left) { | |
2490 | kbuf++; | |
2491 | left--; | |
2492 | } | |
2493 | } | |
2494 | ||
5a04cca6 | 2495 | bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1); |
9f977fb7 OP |
2496 | first = 0; |
2497 | proc_skip_char(&kbuf, &left, '\n'); | |
2498 | } | |
2499 | free_page(page); | |
2500 | } else { | |
2501 | unsigned long bit_a, bit_b = 0; | |
2502 | ||
2503 | while (left) { | |
2504 | bit_a = find_next_bit(bitmap, bitmap_len, bit_b); | |
2505 | if (bit_a >= bitmap_len) | |
2506 | break; | |
2507 | bit_b = find_next_zero_bit(bitmap, bitmap_len, | |
2508 | bit_a + 1) - 1; | |
2509 | ||
2510 | if (!first) { | |
2511 | err = proc_put_char(&buffer, &left, ','); | |
2512 | if (err) | |
2513 | break; | |
2514 | } | |
2515 | err = proc_put_long(&buffer, &left, bit_a, false); | |
2516 | if (err) | |
2517 | break; | |
2518 | if (bit_a != bit_b) { | |
2519 | err = proc_put_char(&buffer, &left, '-'); | |
2520 | if (err) | |
2521 | break; | |
2522 | err = proc_put_long(&buffer, &left, bit_b, false); | |
2523 | if (err) | |
2524 | break; | |
2525 | } | |
2526 | ||
2527 | first = 0; bit_b++; | |
2528 | } | |
2529 | if (!err) | |
2530 | err = proc_put_char(&buffer, &left, '\n'); | |
2531 | } | |
2532 | ||
2533 | if (!err) { | |
2534 | if (write) { | |
2535 | if (*ppos) | |
2536 | bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len); | |
2537 | else | |
5a04cca6 | 2538 | bitmap_copy(bitmap, tmp_bitmap, bitmap_len); |
9f977fb7 OP |
2539 | } |
2540 | kfree(tmp_bitmap); | |
2541 | *lenp -= left; | |
2542 | *ppos += *lenp; | |
2543 | return 0; | |
2544 | } else { | |
2545 | kfree(tmp_bitmap); | |
2546 | return err; | |
2547 | } | |
2548 | } | |
2549 | ||
55610500 | 2550 | #else /* CONFIG_PROC_SYSCTL */ |
1da177e4 | 2551 | |
8d65af78 | 2552 | int proc_dostring(struct ctl_table *table, int write, |
1da177e4 LT |
2553 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2554 | { | |
2555 | return -ENOSYS; | |
2556 | } | |
2557 | ||
8d65af78 | 2558 | int proc_dointvec(struct ctl_table *table, int write, |
1da177e4 | 2559 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4 LT |
2560 | { |
2561 | return -ENOSYS; | |
2562 | } | |
2563 | ||
8d65af78 | 2564 | int proc_dointvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2565 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2566 | { | |
2567 | return -ENOSYS; | |
2568 | } | |
2569 | ||
8d65af78 | 2570 | int proc_dointvec_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
2571 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2572 | { | |
2573 | return -ENOSYS; | |
2574 | } | |
2575 | ||
8d65af78 | 2576 | int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
2577 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2578 | { | |
2579 | return -ENOSYS; | |
2580 | } | |
2581 | ||
8d65af78 | 2582 | int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
2583 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2584 | { | |
2585 | return -ENOSYS; | |
2586 | } | |
2587 | ||
8d65af78 | 2588 | int proc_doulongvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2589 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2590 | { | |
2591 | return -ENOSYS; | |
2592 | } | |
2593 | ||
d8217f07 | 2594 | int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2595 | void __user *buffer, |
2596 | size_t *lenp, loff_t *ppos) | |
2597 | { | |
2598 | return -ENOSYS; | |
2599 | } | |
2600 | ||
2601 | ||
55610500 | 2602 | #endif /* CONFIG_PROC_SYSCTL */ |
1da177e4 | 2603 | |
1da177e4 LT |
2604 | /* |
2605 | * No sense putting this after each symbol definition, twice, | |
2606 | * exception granted :-) | |
2607 | */ | |
2608 | EXPORT_SYMBOL(proc_dointvec); | |
2609 | EXPORT_SYMBOL(proc_dointvec_jiffies); | |
2610 | EXPORT_SYMBOL(proc_dointvec_minmax); | |
2611 | EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); | |
2612 | EXPORT_SYMBOL(proc_dointvec_ms_jiffies); | |
2613 | EXPORT_SYMBOL(proc_dostring); | |
2614 | EXPORT_SYMBOL(proc_doulongvec_minmax); | |
2615 | EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax); |