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usb: gadget: f_mtp: Avoid race between mtp_read and mtp_function_disable
[GitHub/exynos8895/android_kernel_samsung_universal8895.git] / kernel / sysctl.c
CommitLineData
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 21#include <linux/module.h>
e2e40f2c 22#include <linux/aio.h>
1da177e4
LT		 23#include <linux/mm.h>
24#include <linux/swap.h>
25#include <linux/slab.h>
26#include <linux/sysctl.h>
5a04cca6 27#include <linux/bitmap.h>
d33ed52d 28#include <linux/signal.h>
455cd5ab 29#include <linux/printk.h>
1da177e4 30#include <linux/proc_fs.h>
72c2d582 31#include <linux/security.h>
1da177e4 32#include <linux/ctype.h>
dfec072e 33#include <linux/kmemcheck.h>
fd4b616b 34#include <linux/kmemleak.h>
62239ac2 35#include <linux/fs.h>
1da177e4
LT		 36#include <linux/init.h>
37#include <linux/kernel.h>
0296b228 38#include <linux/kobject.h>
20380731 39#include <linux/net.h>
1da177e4
LT		 40#include <linux/sysrq.h>
41#include <linux/highuid.h>
42#include <linux/writeback.h>
3fff4c42 43#include <linux/ratelimit.h>
76ab0f53 44#include <linux/compaction.h>
1da177e4 45#include <linux/hugetlb.h>
1da177e4 46#include <linux/initrd.h>
0b77f5bf 47#include <linux/key.h>
1da177e4
LT		 48#include <linux/times.h>
49#include <linux/limits.h>
50#include <linux/dcache.h>
6e006701 51#include <linux/dnotify.h>
1da177e4 52#include <linux/syscalls.h>
c748e134 53#include <linux/vmstat.h>
c255d844
PM		 54#include <linux/nfs_fs.h>
55#include <linux/acpi.h>
10a0a8d4 56#include <linux/reboot.h>
b0fc494f 57#include <linux/ftrace.h>
cdd6c482 58#include <linux/perf_event.h>
b2be84df 59#include <linux/kprobes.h>
b492e95b 60#include <linux/pipe_fs_i.h>
8e4228e1 61#include <linux/oom.h>
17f60a7d 62#include <linux/kmod.h>
73efc039 63#include <linux/capability.h>
40401530 64#include <linux/binfmts.h>
cf4aebc2 65#include <linux/sched/sysctl.h>
7984754b 66#include <linux/kexec.h>
1be7f75d 67#include <linux/bpf.h>
c50fd34e 68#include <linux/mount.h>
1da177e4
LT		 69
70#include <asm/uaccess.h>
71#include <asm/processor.h>
72
29cbc78b
AK		 73#ifdef CONFIG_X86
74#include <asm/nmi.h>
0741f4d2 75#include <asm/stacktrace.h>
6e7c4025 76#include <asm/io.h>
29cbc78b 77#endif
d550bbd4
DH		 78#ifdef CONFIG_SPARC
79#include <asm/setup.h>
80#endif
c55b7c3e
DY		 81#ifdef CONFIG_BSD_PROCESS_ACCT
82#include <linux/acct.h>
83#endif
4f0e056f
DY		 84#ifdef CONFIG_RT_MUTEXES
85#include <linux/rtmutex.h>
86#endif
2edf5e49
DY		 87#if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
88#include <linux/lockdep.h>
89#endif
15485a46
DY		 90#ifdef CONFIG_CHR_DEV_SG
91#include <scsi/sg.h>
92#endif
29cbc78b 93
58687acb 94#ifdef CONFIG_LOCKUP_DETECTOR
504d7cf1
DZ		 95#include <linux/nmi.h>
96#endif
97
1da177e4
LT		 98#if defined(CONFIG_SYSCTL)
99
100/* External variables not in a header file. */
e8c17847
DM		 101#if IS_ENABLED(CONFIG_USB)
102int deny_new_usb __read_mostly = 0;
103EXPORT_SYMBOL(deny_new_usb);
104#endif
d6e71144 105extern int suid_dumpable;
046d662f
AK		 106#ifdef CONFIG_COREDUMP
107extern int core_uses_pid;
1da177e4 108extern char core_pattern[];
a293980c 109extern unsigned int core_pipe_limit;
046d662f 110#endif
1da177e4 111extern int pid_max;
f8ade366 112extern int extra_free_kbytes;
1da177e4 113extern int pid_max_min, pid_max_max;
8ad4b1fb 114extern int percpu_pagelist_fraction;
bebfa101 115extern int compat_log;
9745512c 116extern int latencytop_enabled;
eceea0b3 117extern int sysctl_nr_open_min, sysctl_nr_open_max;
dd8632a1
PM		 118#ifndef CONFIG_MMU
119extern int sysctl_nr_trim_pages;
120#endif
1da177e4 121
c4f3b63f 122/* Constants used for minimum and maximum */
2508ce18 123#ifdef CONFIG_LOCKUP_DETECTOR
c4f3b63f
RT		 124static int sixty = 60;
125#endif
126
270750db
AT		 127static int __maybe_unused neg_one = -1;
128
c4f3b63f 129static int zero;
cd5f9a4c
LT		 130static int __maybe_unused one = 1;
131static int __maybe_unused two = 2;
5509a5d2 132static int __maybe_unused four = 4;
fc3501d4 133static unsigned long one_ul = 1;
c4f3b63f 134static int one_hundred = 100;
1cac41cb
MB		 135#ifdef CONFIG_INCREASE_MAXIMUM_SWAPPINESS
136static int max_swappiness = 200;
137#endif
af91322e
DY		 138#ifdef CONFIG_PRINTK
139static int ten_thousand = 10000;
140#endif
c4f3b63f 141
9e4a5bda
AR		 142/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
143static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
144
1da177e4
LT		 145/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
146static int maxolduid = 65535;
147static int minolduid;
148
149static int ngroups_max = NGROUPS_MAX;
73efc039 150static const int cap_last_cap = CAP_LAST_CAP;
1da177e4 151
80df2847
LH		 152/*this is needed for proc_doulongvec_minmax of sysctl_hung_task_timeout_secs */
153#ifdef CONFIG_DETECT_HUNG_TASK
154static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
155#endif
156
d14f1729
DY		 157#ifdef CONFIG_INOTIFY_USER
158#include <linux/inotify.h>
159#endif
72c57ed5 160#ifdef CONFIG_SPARC
1da177e4
LT		 161#endif
162
163#ifdef __hppa__
164extern int pwrsw_enabled;
bf14e3b9
VG		 165#endif
166
167#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
1da177e4
LT		 168extern int unaligned_enabled;
169#endif
1da177e4 170
d2b176ed 171#ifdef CONFIG_IA64
88fc241f 172extern int unaligned_dump_stack;
d2b176ed
JS		 173#endif
174
b6fca725
VG		 175#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
176extern int no_unaligned_warning;
177#endif
178
d6f8ff73 179#ifdef CONFIG_PROC_SYSCTL
f4aacea2
KC		 180
181#define SYSCTL_WRITES_LEGACY -1
182#define SYSCTL_WRITES_WARN 0
183#define SYSCTL_WRITES_STRICT 1
184
2449a71e 185static int sysctl_writes_strict = SYSCTL_WRITES_STRICT;
f4aacea2 186
8d65af78 187static int proc_do_cad_pid(struct ctl_table *table, int write,
9ec52099 188 void __user *buffer, size_t *lenp, loff_t *ppos);
8d65af78 189static int proc_taint(struct ctl_table *table, int write,
34f5a398 190 void __user *buffer, size_t *lenp, loff_t *ppos);
d6f8ff73 191#endif
9ec52099 192
bfdc0b49 193#ifdef CONFIG_PRINTK
620f6e8e 194static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
bfdc0b49
RW		 195 void __user *buffer, size_t *lenp, loff_t *ppos);
196#endif
197
54b50199
KC		 198static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
199 void __user *buffer, size_t *lenp, loff_t *ppos);
046d662f 200#ifdef CONFIG_COREDUMP
54b50199
KC		 201static int proc_dostring_coredump(struct ctl_table *table, int write,
202 void __user *buffer, size_t *lenp, loff_t *ppos);
046d662f 203#endif
54b50199 204
97f5f0cd 205#ifdef CONFIG_MAGIC_SYSRQ
8c6a98b2 206/* Note: sysrq code uses it's own private copy */
8eaede49 207static int __sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE;
97f5f0cd 208
6f8fd1d7 209static int sysrq_sysctl_handler(struct ctl_table *table, int write,
97f5f0cd
DT		 210 void __user *buffer, size_t *lenp,
211 loff_t *ppos)
212{
213 int error;
214
215 error = proc_dointvec(table, write, buffer, lenp, ppos);
216 if (error)
217 return error;
218
219 if (write)
220 sysrq_toggle_support(__sysrq_enabled);
221
222 return 0;
223}
224
225#endif
226
d8217f07
EB		 227static struct ctl_table kern_table[];
228static struct ctl_table vm_table[];
229static struct ctl_table fs_table[];
230static struct ctl_table debug_table[];
231static struct ctl_table dev_table[];
232extern struct ctl_table random_table[];
7ef9964e
DL		 233#ifdef CONFIG_EPOLL
234extern struct ctl_table epoll_table[];
235#endif
1da177e4
LT		 236
237#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
238int sysctl_legacy_va_layout;
239#endif
240
1da177e4
LT		 241/* The default sysctl tables: */
242
de4e83bd 243static struct ctl_table sysctl_base_table[] = {
1da177e4 244 {
1da177e4
LT		 245 .procname = "kernel",
246 .mode = 0555,
247 .child = kern_table,
248 },
249 {
1da177e4
LT		 250 .procname = "vm",
251 .mode = 0555,
252 .child = vm_table,
253 },
1da177e4 254 {
1da177e4
LT		 255 .procname = "fs",
256 .mode = 0555,
257 .child = fs_table,
258 },
259 {
1da177e4
LT		 260 .procname = "debug",
261 .mode = 0555,
262 .child = debug_table,
263 },
264 {
1da177e4
LT		 265 .procname = "dev",
266 .mode = 0555,
267 .child = dev_table,
268 },
6fce56ec 269 { }
1da177e4
LT		 270};
271
77e54a1f 272#ifdef CONFIG_SCHED_DEBUG
73c4efd2
ED		 273static int min_sched_granularity_ns = 100000; /* 100 usecs */
274static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
275static int min_wakeup_granularity_ns; /* 0 usecs */
276static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
cbee9f88 277#ifdef CONFIG_SMP
1983a922
CE		 278static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
279static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1;
cbee9f88
PZ		 280#endif /* CONFIG_SMP */
281#endif /* CONFIG_SCHED_DEBUG */
77e54a1f 282
5e771905
MG		 283#ifdef CONFIG_COMPACTION
284static int min_extfrag_threshold;
285static int max_extfrag_threshold = 1000;
286#endif
287
d8217f07 288static struct ctl_table kern_table[] = {
2bba22c5 289 {
2bba22c5
MG		 290 .procname = "sched_child_runs_first",
291 .data = &sysctl_sched_child_runs_first,
292 .maxlen = sizeof(unsigned int),
293 .mode = 0644,
6d456111 294 .proc_handler = proc_dointvec,
2bba22c5 295 },
77e54a1f
IM		 296#ifdef CONFIG_SCHED_DEBUG
297 {
b2be5e96
PZ		 298 .procname = "sched_min_granularity_ns",
299 .data = &sysctl_sched_min_granularity,
77e54a1f
IM		 300 .maxlen = sizeof(unsigned int),
301 .mode = 0644,
702a7c76 302 .proc_handler = sched_proc_update_handler,
b2be5e96
PZ		 303 .extra1 = &min_sched_granularity_ns,
304 .extra2 = &max_sched_granularity_ns,
77e54a1f 305 },
21805085 306 {
21805085
PZ		 307 .procname = "sched_latency_ns",
308 .data = &sysctl_sched_latency,
309 .maxlen = sizeof(unsigned int),
310 .mode = 0644,
702a7c76 311 .proc_handler = sched_proc_update_handler,
21805085
PZ		 312 .extra1 = &min_sched_granularity_ns,
313 .extra2 = &max_sched_granularity_ns,
314 },
efb86bd0
SV		 315#ifdef CONFIG_SCHED_WALT
316 {
317 .procname = "sched_use_walt_cpu_util",
318 .data = &sysctl_sched_use_walt_cpu_util,
319 .maxlen = sizeof(unsigned int),
320 .mode = 0644,
321 .proc_handler = proc_dointvec,
322 },
323 {
324 .procname = "sched_use_walt_task_util",
325 .data = &sysctl_sched_use_walt_task_util,
326 .maxlen = sizeof(unsigned int),
327 .mode = 0644,
328 .proc_handler = proc_dointvec,
329 },
330 {
331 .procname = "sched_walt_init_task_load_pct",
332 .data = &sysctl_sched_walt_init_task_load_pct,
333 .maxlen = sizeof(unsigned int),
334 .mode = 0644,
335 .proc_handler = proc_dointvec,
336 },
519c6275
SS		 337 {
338 .procname = "sched_walt_cpu_high_irqload",
339 .data = &sysctl_sched_walt_cpu_high_irqload,
340 .maxlen = sizeof(unsigned int),
341 .mode = 0644,
342 .proc_handler = proc_dointvec,
343 },
efb86bd0 344#endif
77e54a1f 345 {
77e54a1f
IM		 346 .procname = "sched_wakeup_granularity_ns",
347 .data = &sysctl_sched_wakeup_granularity,
348 .maxlen = sizeof(unsigned int),
349 .mode = 0644,
702a7c76 350 .proc_handler = sched_proc_update_handler,
77e54a1f
IM		 351 .extra1 = &min_wakeup_granularity_ns,
352 .extra2 = &max_wakeup_granularity_ns,
353 },
cbee9f88 354#ifdef CONFIG_SMP
1983a922 355 {
1983a922
CE		 356 .procname = "sched_tunable_scaling",
357 .data = &sysctl_sched_tunable_scaling,
358 .maxlen = sizeof(enum sched_tunable_scaling),
359 .mode = 0644,
702a7c76 360 .proc_handler = sched_proc_update_handler,
1983a922
CE		 361 .extra1 = &min_sched_tunable_scaling,
362 .extra2 = &max_sched_tunable_scaling,
2398f2c6 363 },
da84d961 364 {
d00535db 365 .procname = "sched_migration_cost_ns",
da84d961
IM		 366 .data = &sysctl_sched_migration_cost,
367 .maxlen = sizeof(unsigned int),
368 .mode = 0644,
6d456111 369 .proc_handler = proc_dointvec,
da84d961 370 },
b82d9fdd 371 {
b82d9fdd
PZ		 372 .procname = "sched_nr_migrate",
373 .data = &sysctl_sched_nr_migrate,
374 .maxlen = sizeof(unsigned int),
fa85ae24 375 .mode = 0644,
6d456111 376 .proc_handler = proc_dointvec,
fa85ae24 377 },
e9e9250b 378 {
d00535db 379 .procname = "sched_time_avg_ms",
e9e9250b
PZ		 380 .data = &sysctl_sched_time_avg,
381 .maxlen = sizeof(unsigned int),
382 .mode = 0644,
6d456111 383 .proc_handler = proc_dointvec,
e9e9250b 384 },
a7a4f8a7 385 {
d00535db 386 .procname = "sched_shares_window_ns",
a7a4f8a7
PT		 387 .data = &sysctl_sched_shares_window,
388 .maxlen = sizeof(unsigned int),
389 .mode = 0644,
390 .proc_handler = proc_dointvec,
391 },
cbee9f88
PZ		 392#endif /* CONFIG_SMP */
393#ifdef CONFIG_NUMA_BALANCING
4b96a29b
PZ		 394 {
395 .procname = "numa_balancing_scan_delay_ms",
396 .data = &sysctl_numa_balancing_scan_delay,
397 .maxlen = sizeof(unsigned int),
398 .mode = 0644,
399 .proc_handler = proc_dointvec,
400 },
cbee9f88
PZ		 401 {
402 .procname = "numa_balancing_scan_period_min_ms",
403 .data = &sysctl_numa_balancing_scan_period_min,
404 .maxlen = sizeof(unsigned int),
405 .mode = 0644,
406 .proc_handler = proc_dointvec,
407 },
408 {
409 .procname = "numa_balancing_scan_period_max_ms",
410 .data = &sysctl_numa_balancing_scan_period_max,
411 .maxlen = sizeof(unsigned int),
412 .mode = 0644,
413 .proc_handler = proc_dointvec,
414 },
6e5fb223
PZ		 415 {
416 .procname = "numa_balancing_scan_size_mb",
417 .data = &sysctl_numa_balancing_scan_size,
418 .maxlen = sizeof(unsigned int),
419 .mode = 0644,
64192658
KT		 420 .proc_handler = proc_dointvec_minmax,
421 .extra1 = &one,
6e5fb223 422 },
54a43d54
AK		 423 {
424 .procname = "numa_balancing",
425 .data = NULL, /* filled in by handler */
426 .maxlen = sizeof(unsigned int),
427 .mode = 0644,
428 .proc_handler = sysctl_numa_balancing,
429 .extra1 = &zero,
430 .extra2 = &one,
431 },
cbee9f88
PZ		 432#endif /* CONFIG_NUMA_BALANCING */
433#endif /* CONFIG_SCHED_DEBUG */
9f0c1e56 434 {
9f0c1e56
PZ		 435 .procname = "sched_rt_period_us",
436 .data = &sysctl_sched_rt_period,
437 .maxlen = sizeof(unsigned int),
438 .mode = 0644,
6d456111 439 .proc_handler = sched_rt_handler,
9f0c1e56
PZ		 440 },
441 {
9f0c1e56
PZ		 442 .procname = "sched_rt_runtime_us",
443 .data = &sysctl_sched_rt_runtime,
444 .maxlen = sizeof(int),
445 .mode = 0644,
6d456111 446 .proc_handler = sched_rt_handler,
9f0c1e56 447 },
ce0dbbbb
CW		 448 {
449 .procname = "sched_rr_timeslice_ms",
450 .data = &sched_rr_timeslice,
451 .maxlen = sizeof(int),
452 .mode = 0644,
453 .proc_handler = sched_rr_handler,
454 },
1cac41cb
MB		 455#ifdef CONFIG_SCHED_USE_FLUID_RT
456 {
457 .procname = "sysctl_sched_restrict_cluster_spill",
458 .data = &sysctl_sched_restrict_cluster_spill,
459 .maxlen = sizeof(unsigned int),
460 .mode = 0644,
461 .proc_handler = proc_dointvec,
462 },
463#endif
5091faa4
MG		 464#ifdef CONFIG_SCHED_AUTOGROUP
465 {
466 .procname = "sched_autogroup_enabled",
467 .data = &sysctl_sched_autogroup_enabled,
468 .maxlen = sizeof(unsigned int),
469 .mode = 0644,
1747b21f 470 .proc_handler = proc_dointvec_minmax,
5091faa4
MG		 471 .extra1 = &zero,
472 .extra2 = &one,
473 },
474#endif
ec12cb7f
PT		 475#ifdef CONFIG_CFS_BANDWIDTH
476 {
477 .procname = "sched_cfs_bandwidth_slice_us",
478 .data = &sysctl_sched_cfs_bandwidth_slice,
479 .maxlen = sizeof(unsigned int),
480 .mode = 0644,
481 .proc_handler = proc_dointvec_minmax,
482 .extra1 = &one,
483 },
484#endif
344f4ec4
PB		 485#ifdef CONFIG_SCHED_TUNE
486 {
487 .procname = "sched_cfs_boost",
488 .data = &sysctl_sched_cfs_boost,
489 .maxlen = sizeof(sysctl_sched_cfs_boost),
13001f47
PB		 490#ifdef CONFIG_CGROUP_SCHEDTUNE
491 .mode = 0444,
492#else
344f4ec4 493 .mode = 0644,
13001f47 494#endif
344f4ec4
PB		 495 .proc_handler = &sysctl_sched_cfs_boost_handler,
496 .extra1 = &zero,
497 .extra2 = &one_hundred,
498 },
499#endif
f20786ff
PZ		 500#ifdef CONFIG_PROVE_LOCKING
501 {
f20786ff
PZ		 502 .procname = "prove_locking",
503 .data = &prove_locking,
504 .maxlen = sizeof(int),
505 .mode = 0644,
6d456111 506 .proc_handler = proc_dointvec,
f20786ff
PZ		 507 },
508#endif
509#ifdef CONFIG_LOCK_STAT
510 {
f20786ff
PZ		 511 .procname = "lock_stat",
512 .data = &lock_stat,
513 .maxlen = sizeof(int),
514 .mode = 0644,
6d456111 515 .proc_handler = proc_dointvec,
f20786ff 516 },
77e54a1f 517#endif
1da177e4 518 {
1da177e4
LT		 519 .procname = "panic",
520 .data = &panic_timeout,
521 .maxlen = sizeof(int),
522 .mode = 0644,
6d456111 523 .proc_handler = proc_dointvec,
1da177e4 524 },
046d662f 525#ifdef CONFIG_COREDUMP
1da177e4 526 {
1da177e4
LT		 527 .procname = "core_uses_pid",
528 .data = &core_uses_pid,
529 .maxlen = sizeof(int),
530 .mode = 0644,
6d456111 531 .proc_handler = proc_dointvec,
1da177e4
LT		 532 },
533 {
1da177e4
LT		 534 .procname = "core_pattern",
535 .data = core_pattern,
71ce92f3 536 .maxlen = CORENAME_MAX_SIZE,
1da177e4 537 .mode = 0644,
54b50199 538 .proc_handler = proc_dostring_coredump,
1da177e4 539 },
a293980c 540 {
a293980c
NH		 541 .procname = "core_pipe_limit",
542 .data = &core_pipe_limit,
543 .maxlen = sizeof(unsigned int),
544 .mode = 0644,
6d456111 545 .proc_handler = proc_dointvec,
a293980c 546 },
046d662f 547#endif
34f5a398 548#ifdef CONFIG_PROC_SYSCTL
1da177e4 549 {
1da177e4 550 .procname = "tainted",
25ddbb18 551 .maxlen = sizeof(long),
34f5a398 552 .mode = 0644,
6d456111 553 .proc_handler = proc_taint,
1da177e4 554 },
f4aacea2
KC		 555 {
556 .procname = "sysctl_writes_strict",
557 .data = &sysctl_writes_strict,
558 .maxlen = sizeof(int),
559 .mode = 0644,
560 .proc_handler = proc_dointvec_minmax,
561 .extra1 = &neg_one,
562 .extra2 = &one,
563 },
34f5a398 564#endif
9745512c
AV		 565#ifdef CONFIG_LATENCYTOP
566 {
567 .procname = "latencytop",
568 .data = &latencytop_enabled,
569 .maxlen = sizeof(int),
570 .mode = 0644,
6d456111 571 .proc_handler = proc_dointvec,
9745512c
AV		 572 },
573#endif
1da177e4
LT		 574#ifdef CONFIG_BLK_DEV_INITRD
575 {
1da177e4
LT		 576 .procname = "real-root-dev",
577 .data = &real_root_dev,
578 .maxlen = sizeof(int),
579 .mode = 0644,
6d456111 580 .proc_handler = proc_dointvec,
1da177e4
LT		 581 },
582#endif
45807a1d 583 {
45807a1d
IM		 584 .procname = "print-fatal-signals",
585 .data = &print_fatal_signals,
586 .maxlen = sizeof(int),
587 .mode = 0644,
6d456111 588 .proc_handler = proc_dointvec,
45807a1d 589 },
72c57ed5 590#ifdef CONFIG_SPARC
1da177e4 591 {
1da177e4
LT		 592 .procname = "reboot-cmd",
593 .data = reboot_command,
594 .maxlen = 256,
595 .mode = 0644,
6d456111 596 .proc_handler = proc_dostring,
1da177e4
LT		 597 },
598 {
1da177e4
LT		 599 .procname = "stop-a",
600 .data = &stop_a_enabled,
601 .maxlen = sizeof (int),
602 .mode = 0644,
6d456111 603 .proc_handler = proc_dointvec,
1da177e4
LT		 604 },
605 {
1da177e4
LT		 606 .procname = "scons-poweroff",
607 .data = &scons_pwroff,
608 .maxlen = sizeof (int),
609 .mode = 0644,
6d456111 610 .proc_handler = proc_dointvec,
1da177e4
LT		 611 },
612#endif
0871420f
DM		 613#ifdef CONFIG_SPARC64
614 {
0871420f
DM		 615 .procname = "tsb-ratio",
616 .data = &sysctl_tsb_ratio,
617 .maxlen = sizeof (int),
618 .mode = 0644,
6d456111 619 .proc_handler = proc_dointvec,
0871420f
DM		 620 },
621#endif
1da177e4
LT		 622#ifdef __hppa__
623 {
1da177e4
LT		 624 .procname = "soft-power",
625 .data = &pwrsw_enabled,
626 .maxlen = sizeof (int),
627 .mode = 0644,
6d456111 628 .proc_handler = proc_dointvec,
1da177e4 629 },
bf14e3b9
VG		 630#endif
631#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
1da177e4 632 {
1da177e4
LT		 633 .procname = "unaligned-trap",
634 .data = &unaligned_enabled,
635 .maxlen = sizeof (int),
636 .mode = 0644,
6d456111 637 .proc_handler = proc_dointvec,
1da177e4
LT		 638 },
639#endif
640 {
1da177e4
LT		 641 .procname = "ctrl-alt-del",
642 .data = &C_A_D,
643 .maxlen = sizeof(int),
644 .mode = 0644,
6d456111 645 .proc_handler = proc_dointvec,
1da177e4 646 },
606576ce 647#ifdef CONFIG_FUNCTION_TRACER
b0fc494f 648 {
b0fc494f
SR		 649 .procname = "ftrace_enabled",
650 .data = &ftrace_enabled,
651 .maxlen = sizeof(int),
652 .mode = 0644,
6d456111 653 .proc_handler = ftrace_enable_sysctl,
b0fc494f
SR		 654 },
655#endif
f38f1d2a
SR		 656#ifdef CONFIG_STACK_TRACER
657 {
f38f1d2a
SR		 658 .procname = "stack_tracer_enabled",
659 .data = &stack_tracer_enabled,
660 .maxlen = sizeof(int),
661 .mode = 0644,
6d456111 662 .proc_handler = stack_trace_sysctl,
f38f1d2a
SR		 663 },
664#endif
944ac425
SR		 665#ifdef CONFIG_TRACING
666 {
3299b4dd 667 .procname = "ftrace_dump_on_oops",
944ac425
SR		 668 .data = &ftrace_dump_on_oops,
669 .maxlen = sizeof(int),
670 .mode = 0644,
6d456111 671 .proc_handler = proc_dointvec,
944ac425 672 },
de7edd31
SRRH		 673 {
674 .procname = "traceoff_on_warning",
675 .data = &__disable_trace_on_warning,
676 .maxlen = sizeof(__disable_trace_on_warning),
677 .mode = 0644,
678 .proc_handler = proc_dointvec,
679 },
0daa2302
SRRH		 680 {
681 .procname = "tracepoint_printk",
682 .data = &tracepoint_printk,
683 .maxlen = sizeof(tracepoint_printk),
684 .mode = 0644,
685 .proc_handler = proc_dointvec,
686 },
944ac425 687#endif
2965faa5 688#ifdef CONFIG_KEXEC_CORE
7984754b
KC		 689 {
690 .procname = "kexec_load_disabled",
691 .data = &kexec_load_disabled,
692 .maxlen = sizeof(int),
693 .mode = 0644,
694 /* only handle a transition from default "0" to "1" */
695 .proc_handler = proc_dointvec_minmax,
696 .extra1 = &one,
697 .extra2 = &one,
698 },
699#endif
a1ef5adb 700#ifdef CONFIG_MODULES
1da177e4 701 {
1da177e4
LT		 702 .procname = "modprobe",
703 .data = &modprobe_path,
704 .maxlen = KMOD_PATH_LEN,
705 .mode = 0644,
6d456111 706 .proc_handler = proc_dostring,
1da177e4 707 },
3d43321b 708 {
3d43321b
KC		 709 .procname = "modules_disabled",
710 .data = &modules_disabled,
711 .maxlen = sizeof(int),
712 .mode = 0644,
713 /* only handle a transition from default "0" to "1" */
6d456111 714 .proc_handler = proc_dointvec_minmax,
3d43321b
KC		 715 .extra1 = &one,
716 .extra2 = &one,
717 },
1da177e4 718#endif
86d56134 719#ifdef CONFIG_UEVENT_HELPER
1da177e4 720 {
1da177e4 721 .procname = "hotplug",
312c004d
KS		 722 .data = &uevent_helper,
723 .maxlen = UEVENT_HELPER_PATH_LEN,
1da177e4 724 .mode = 0644,
6d456111 725 .proc_handler = proc_dostring,
1da177e4 726 },
86d56134 727#endif
1da177e4
LT		 728#ifdef CONFIG_CHR_DEV_SG
729 {
1da177e4
LT		 730 .procname = "sg-big-buff",
731 .data = &sg_big_buff,
732 .maxlen = sizeof (int),
733 .mode = 0444,
6d456111 734 .proc_handler = proc_dointvec,
1da177e4
LT		 735 },
736#endif
737#ifdef CONFIG_BSD_PROCESS_ACCT
738 {
1da177e4
LT		 739 .procname = "acct",
740 .data = &acct_parm,
741 .maxlen = 3*sizeof(int),
742 .mode = 0644,
6d456111 743 .proc_handler = proc_dointvec,
1da177e4
LT		 744 },
745#endif
1da177e4
LT		 746#ifdef CONFIG_MAGIC_SYSRQ
747 {
1da177e4 748 .procname = "sysrq",
5d6f647f 749 .data = &__sysrq_enabled,
1da177e4
LT		 750 .maxlen = sizeof (int),
751 .mode = 0644,
97f5f0cd 752 .proc_handler = sysrq_sysctl_handler,
1da177e4
LT		 753 },
754#endif
d6f8ff73 755#ifdef CONFIG_PROC_SYSCTL
1da177e4 756 {
1da177e4 757 .procname = "cad_pid",
9ec52099 758 .data = NULL,
1da177e4
LT		 759 .maxlen = sizeof (int),
760 .mode = 0600,
6d456111 761 .proc_handler = proc_do_cad_pid,
1da177e4 762 },
d6f8ff73 763#endif
1da177e4 764 {
1da177e4 765 .procname = "threads-max",
16db3d3f 766 .data = NULL,
1da177e4
LT		 767 .maxlen = sizeof(int),
768 .mode = 0644,
16db3d3f 769 .proc_handler = sysctl_max_threads,
1da177e4
LT		 770 },
771 {
1da177e4
LT		 772 .procname = "random",
773 .mode = 0555,
774 .child = random_table,
775 },
17f60a7d
EP		 776 {
777 .procname = "usermodehelper",
778 .mode = 0555,
779 .child = usermodehelper_table,
780 },
1da177e4 781 {
1da177e4
LT		 782 .procname = "overflowuid",
783 .data = &overflowuid,
784 .maxlen = sizeof(int),
785 .mode = 0644,
6d456111 786 .proc_handler = proc_dointvec_minmax,
1da177e4
LT		 787 .extra1 = &minolduid,
788 .extra2 = &maxolduid,
789 },
790 {
1da177e4
LT		 791 .procname = "overflowgid",
792 .data = &overflowgid,
793 .maxlen = sizeof(int),
794 .mode = 0644,
6d456111 795 .proc_handler = proc_dointvec_minmax,
1da177e4
LT		 796 .extra1 = &minolduid,
797 .extra2 = &maxolduid,
798 },
347a8dc3 799#ifdef CONFIG_S390
1da177e4
LT		 800#ifdef CONFIG_MATHEMU
801 {
1da177e4
LT		 802 .procname = "ieee_emulation_warnings",
803 .data = &sysctl_ieee_emulation_warnings,
804 .maxlen = sizeof(int),
805 .mode = 0644,
6d456111 806 .proc_handler = proc_dointvec,
1da177e4 807 },
1da177e4
LT		 808#endif
809 {
1da177e4 810 .procname = "userprocess_debug",
ab3c68ee 811 .data = &show_unhandled_signals,
1da177e4
LT		 812 .maxlen = sizeof(int),
813 .mode = 0644,
6d456111 814 .proc_handler = proc_dointvec,
1da177e4
LT		 815 },
816#endif
817 {
1da177e4
LT		 818 .procname = "pid_max",
819 .data = &pid_max,
820 .maxlen = sizeof (int),
821 .mode = 0644,
6d456111 822 .proc_handler = proc_dointvec_minmax,
1da177e4
LT		 823 .extra1 = &pid_max_min,
824 .extra2 = &pid_max_max,
825 },
826 {
1da177e4
LT		 827 .procname = "panic_on_oops",
828 .data = &panic_on_oops,
829 .maxlen = sizeof(int),
830 .mode = 0644,
6d456111 831 .proc_handler = proc_dointvec,
1da177e4 832 },
7ef3d2fd
JP		 833#if defined CONFIG_PRINTK
834 {
7ef3d2fd
JP		 835 .procname = "printk",
836 .data = &console_loglevel,
837 .maxlen = 4*sizeof(int),
838 .mode = 0644,
6d456111 839 .proc_handler = proc_dointvec,
7ef3d2fd 840 },
1da177e4 841 {
1da177e4 842 .procname = "printk_ratelimit",
717115e1 843 .data = &printk_ratelimit_state.interval,
1da177e4
LT		 844 .maxlen = sizeof(int),
845 .mode = 0644,
6d456111 846 .proc_handler = proc_dointvec_jiffies,
1da177e4
LT		 847 },
848 {
1da177e4 849 .procname = "printk_ratelimit_burst",
717115e1 850 .data = &printk_ratelimit_state.burst,
1da177e4
LT		 851 .maxlen = sizeof(int),
852 .mode = 0644,
6d456111 853 .proc_handler = proc_dointvec,
1da177e4 854 },
af91322e 855 {
af91322e
DY		 856 .procname = "printk_delay",
857 .data = &printk_delay_msec,
858 .maxlen = sizeof(int),
859 .mode = 0644,
6d456111 860 .proc_handler = proc_dointvec_minmax,
af91322e
DY		 861 .extra1 = &zero,
862 .extra2 = &ten_thousand,
863 },
eaf06b24
DR		 864 {
865 .procname = "dmesg_restrict",
866 .data = &dmesg_restrict,
867 .maxlen = sizeof(int),
868 .mode = 0644,
620f6e8e 869 .proc_handler = proc_dointvec_minmax_sysadmin,
eaf06b24
DR		 870 .extra1 = &zero,
871 .extra2 = &one,
872 },
455cd5ab
DR		 873 {
874 .procname = "kptr_restrict",
875 .data = &kptr_restrict,
876 .maxlen = sizeof(int),
877 .mode = 0644,
620f6e8e 878 .proc_handler = proc_dointvec_minmax_sysadmin,
455cd5ab
DR		 879 .extra1 = &zero,
880 .extra2 = &two,
881 },
e8c17847
DM		 882#endif
883#if IS_ENABLED(CONFIG_USB)
884 {
885 .procname = "deny_new_usb",
886 .data = &deny_new_usb,
887 .maxlen = sizeof(int),
888 .mode = 0644,
889 .proc_handler = proc_dointvec_minmax_sysadmin,
890 .extra1 = &zero,
891 .extra2 = &one,
892 },
df6e61d4 893#endif
1da177e4 894 {
1da177e4
LT		 895 .procname = "ngroups_max",
896 .data = &ngroups_max,
897 .maxlen = sizeof (int),
898 .mode = 0444,
6d456111 899 .proc_handler = proc_dointvec,
1da177e4 900 },
73efc039
DB		 901 {
902 .procname = "cap_last_cap",
903 .data = (void *)&cap_last_cap,
904 .maxlen = sizeof(int),
905 .mode = 0444,
906 .proc_handler = proc_dointvec,
907 },
58687acb 908#if defined(CONFIG_LOCKUP_DETECTOR)
504d7cf1 909 {
58687acb 910 .procname = "watchdog",
3c00ea82 911 .data = &watchdog_user_enabled,
504d7cf1
DZ		 912 .maxlen = sizeof (int),
913 .mode = 0644,
195daf66 914 .proc_handler = proc_watchdog,
586692a5
MSB		 915 .extra1 = &zero,
916 .extra2 = &one,
58687acb
DZ		 917 },
918 {
919 .procname = "watchdog_thresh",
586692a5 920 .data = &watchdog_thresh,
58687acb
DZ		 921 .maxlen = sizeof(int),
922 .mode = 0644,
195daf66 923 .proc_handler = proc_watchdog_thresh,
a6572f84 924 .extra1 = &zero,
58687acb 925 .extra2 = &sixty,
504d7cf1 926 },
195daf66
UO		 927 {
928 .procname = "nmi_watchdog",
929 .data = &nmi_watchdog_enabled,
930 .maxlen = sizeof (int),
931 .mode = 0644,
932 .proc_handler = proc_nmi_watchdog,
933 .extra1 = &zero,
934#if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
935 .extra2 = &one,
936#else
937 .extra2 = &zero,
938#endif
939 },
940 {
941 .procname = "soft_watchdog",
942 .data = &soft_watchdog_enabled,
943 .maxlen = sizeof (int),
944 .mode = 0644,
945 .proc_handler = proc_soft_watchdog,
946 .extra1 = &zero,
947 .extra2 = &one,
948 },
fe4ba3c3
CM		 949 {
950 .procname = "watchdog_cpumask",
951 .data = &watchdog_cpumask_bits,
952 .maxlen = NR_CPUS,
953 .mode = 0644,
954 .proc_handler = proc_watchdog_cpumask,
955 },
2508ce18
DZ		 956 {
957 .procname = "softlockup_panic",
958 .data = &softlockup_panic,
959 .maxlen = sizeof(int),
960 .mode = 0644,
961 .proc_handler = proc_dointvec_minmax,
962 .extra1 = &zero,
963 .extra2 = &one,
964 },
ac1f5912
DZ		 965#ifdef CONFIG_HARDLOCKUP_DETECTOR
966 {
967 .procname = "hardlockup_panic",
968 .data = &hardlockup_panic,
969 .maxlen = sizeof(int),
970 .mode = 0644,
971 .proc_handler = proc_dointvec_minmax,
972 .extra1 = &zero,
973 .extra2 = &one,
974 },
975#endif
ed235875
AT		 976#ifdef CONFIG_SMP
977 {
978 .procname = "softlockup_all_cpu_backtrace",
979 .data = &sysctl_softlockup_all_cpu_backtrace,
980 .maxlen = sizeof(int),
981 .mode = 0644,
982 .proc_handler = proc_dointvec_minmax,
983 .extra1 = &zero,
984 .extra2 = &one,
985 },
55537871
JK		 986 {
987 .procname = "hardlockup_all_cpu_backtrace",
988 .data = &sysctl_hardlockup_all_cpu_backtrace,
989 .maxlen = sizeof(int),
990 .mode = 0644,
991 .proc_handler = proc_dointvec_minmax,
992 .extra1 = &zero,
993 .extra2 = &one,
994 },
ed235875 995#endif /* CONFIG_SMP */
5dc30558
DZ		 996#endif
997#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86)
998 {
999 .procname = "unknown_nmi_panic",
1000 .data = &unknown_nmi_panic,
1001 .maxlen = sizeof (int),
1002 .mode = 0644,
1003 .proc_handler = proc_dointvec,
1004 },
504d7cf1 1005#endif
1da177e4 1006#if defined(CONFIG_X86)
8da5adda 1007 {
8da5adda
DZ		 1008 .procname = "panic_on_unrecovered_nmi",
1009 .data = &panic_on_unrecovered_nmi,
1010 .maxlen = sizeof(int),
1011 .mode = 0644,
6d456111 1012 .proc_handler = proc_dointvec,
8da5adda 1013 },
5211a242 1014 {
5211a242
KG		 1015 .procname = "panic_on_io_nmi",
1016 .data = &panic_on_io_nmi,
1017 .maxlen = sizeof(int),
1018 .mode = 0644,
6d456111 1019 .proc_handler = proc_dointvec,
5211a242 1020 },
55af7796
MH		 1021#ifdef CONFIG_DEBUG_STACKOVERFLOW
1022 {
1023 .procname = "panic_on_stackoverflow",
1024 .data = &sysctl_panic_on_stackoverflow,
1025 .maxlen = sizeof(int),
1026 .mode = 0644,
1027 .proc_handler = proc_dointvec,
1028 },
1029#endif
1da177e4 1030 {
1da177e4
LT		 1031 .procname = "bootloader_type",
1032 .data = &bootloader_type,
1033 .maxlen = sizeof (int),
1034 .mode = 0444,
6d456111 1035 .proc_handler = proc_dointvec,
1da177e4 1036 },
5031296c 1037 {
5031296c
PA		 1038 .procname = "bootloader_version",
1039 .data = &bootloader_version,
1040 .maxlen = sizeof (int),
1041 .mode = 0444,
6d456111 1042 .proc_handler = proc_dointvec,
5031296c 1043 },
0741f4d2 1044 {
0741f4d2
CE		 1045 .procname = "kstack_depth_to_print",
1046 .data = &kstack_depth_to_print,
1047 .maxlen = sizeof(int),
1048 .mode = 0644,
6d456111 1049 .proc_handler = proc_dointvec,
0741f4d2 1050 },
6e7c4025 1051 {
6e7c4025
IM		 1052 .procname = "io_delay_type",
1053 .data = &io_delay_type,
1054 .maxlen = sizeof(int),
1055 .mode = 0644,
6d456111 1056 .proc_handler = proc_dointvec,
6e7c4025 1057 },
1da177e4 1058#endif
7a9166e3 1059#if defined(CONFIG_MMU)
1da177e4 1060 {
1da177e4
LT		 1061 .procname = "randomize_va_space",
1062 .data = &randomize_va_space,
1063 .maxlen = sizeof(int),
1064 .mode = 0644,
6d456111 1065 .proc_handler = proc_dointvec,
1da177e4 1066 },
7a9166e3 1067#endif
0152fb37 1068#if defined(CONFIG_S390) && defined(CONFIG_SMP)
951f22d5 1069 {
951f22d5
MS		 1070 .procname = "spin_retry",
1071 .data = &spin_retry,
1072 .maxlen = sizeof (int),
1073 .mode = 0644,
6d456111 1074 .proc_handler = proc_dointvec,
951f22d5 1075 },
c255d844 1076#endif
673d5b43 1077#if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86)
c255d844 1078 {
c255d844 1079 .procname = "acpi_video_flags",
77afcf78 1080 .data = &acpi_realmode_flags,
c255d844
PM		 1081 .maxlen = sizeof (unsigned long),
1082 .mode = 0644,
6d456111 1083 .proc_handler = proc_doulongvec_minmax,
c255d844 1084 },
d2b176ed 1085#endif
b6fca725 1086#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
d2b176ed 1087 {
d2b176ed
JS		 1088 .procname = "ignore-unaligned-usertrap",
1089 .data = &no_unaligned_warning,
1090 .maxlen = sizeof (int),
1091 .mode = 0644,
6d456111 1092 .proc_handler = proc_dointvec,
d2b176ed 1093 },
b6fca725
VG		 1094#endif
1095#ifdef CONFIG_IA64
88fc241f 1096 {
88fc241f
DC		 1097 .procname = "unaligned-dump-stack",
1098 .data = &unaligned_dump_stack,
1099 .maxlen = sizeof (int),
1100 .mode = 0644,
6d456111 1101 .proc_handler = proc_dointvec,
88fc241f 1102 },
bebfa101 1103#endif
e162b39a
MSB		 1104#ifdef CONFIG_DETECT_HUNG_TASK
1105 {
e162b39a
MSB		 1106 .procname = "hung_task_panic",
1107 .data = &sysctl_hung_task_panic,
1108 .maxlen = sizeof(int),
1109 .mode = 0644,
6d456111 1110 .proc_handler = proc_dointvec_minmax,
e162b39a
MSB		 1111 .extra1 = &zero,
1112 .extra2 = &one,
1113 },
82a1fcb9 1114 {
82a1fcb9
IM		 1115 .procname = "hung_task_check_count",
1116 .data = &sysctl_hung_task_check_count,
cd64647f 1117 .maxlen = sizeof(int),
82a1fcb9 1118 .mode = 0644,
cd64647f
LZ		 1119 .proc_handler = proc_dointvec_minmax,
1120 .extra1 = &zero,
82a1fcb9
IM		 1121 },
1122 {
82a1fcb9
IM		 1123 .procname = "hung_task_timeout_secs",
1124 .data = &sysctl_hung_task_timeout_secs,
90739081 1125 .maxlen = sizeof(unsigned long),
82a1fcb9 1126 .mode = 0644,
6d456111 1127 .proc_handler = proc_dohung_task_timeout_secs,
80df2847 1128 .extra2 = &hung_task_timeout_max,
82a1fcb9
IM		 1129 },
1130 {
82a1fcb9
IM		 1131 .procname = "hung_task_warnings",
1132 .data = &sysctl_hung_task_warnings,
270750db 1133 .maxlen = sizeof(int),
82a1fcb9 1134 .mode = 0644,
270750db
AT		 1135 .proc_handler = proc_dointvec_minmax,
1136 .extra1 = &neg_one,
82a1fcb9 1137 },
c4f3b63f 1138#endif
bebfa101
AK		 1139#ifdef CONFIG_COMPAT
1140 {
bebfa101
AK		 1141 .procname = "compat-log",
1142 .data = &compat_log,
1143 .maxlen = sizeof (int),
1144 .mode = 0644,
6d456111 1145 .proc_handler = proc_dointvec,
bebfa101 1146 },
951f22d5 1147#endif
23f78d4a
IM		 1148#ifdef CONFIG_RT_MUTEXES
1149 {
23f78d4a
IM		 1150 .procname = "max_lock_depth",
1151 .data = &max_lock_depth,
1152 .maxlen = sizeof(int),
1153 .mode = 0644,
6d456111 1154 .proc_handler = proc_dointvec,
23f78d4a 1155 },
5096add8 1156#endif
10a0a8d4 1157 {
10a0a8d4
JF		 1158 .procname = "poweroff_cmd",
1159 .data = &poweroff_cmd,
1160 .maxlen = POWEROFF_CMD_PATH_LEN,
1161 .mode = 0644,
6d456111 1162 .proc_handler = proc_dostring,
10a0a8d4 1163 },
0b77f5bf
DH		 1164#ifdef CONFIG_KEYS
1165 {
0b77f5bf
DH		 1166 .procname = "keys",
1167 .mode = 0555,
1168 .child = key_sysctls,
1169 },
1170#endif
cdd6c482 1171#ifdef CONFIG_PERF_EVENTS
aa4a2218
VW		 1172 /*
1173 * User-space scripts rely on the existence of this file
1174 * as a feature check for perf_events being enabled.
1175 *
1176 * So it's an ABI, do not remove!
1177 */
1ccd1549 1178 {
cdd6c482
IM		 1179 .procname = "perf_event_paranoid",
1180 .data = &sysctl_perf_event_paranoid,
1181 .maxlen = sizeof(sysctl_perf_event_paranoid),
1ccd1549 1182 .mode = 0644,
6d456111 1183 .proc_handler = proc_dointvec,
1ccd1549 1184 },
c5078f78 1185 {
cdd6c482
IM		 1186 .procname = "perf_event_mlock_kb",
1187 .data = &sysctl_perf_event_mlock,
1188 .maxlen = sizeof(sysctl_perf_event_mlock),
c5078f78 1189 .mode = 0644,
6d456111 1190 .proc_handler = proc_dointvec,
c5078f78 1191 },
a78ac325 1192 {
cdd6c482
IM		 1193 .procname = "perf_event_max_sample_rate",
1194 .data = &sysctl_perf_event_sample_rate,
1195 .maxlen = sizeof(sysctl_perf_event_sample_rate),
a78ac325 1196 .mode = 0644,
163ec435 1197 .proc_handler = perf_proc_update_handler,
723478c8 1198 .extra1 = &one,
a78ac325 1199 },
14c63f17
DH		 1200 {
1201 .procname = "perf_cpu_time_max_percent",
1202 .data = &sysctl_perf_cpu_time_max_percent,
1203 .maxlen = sizeof(sysctl_perf_cpu_time_max_percent),
1204 .mode = 0644,
1205 .proc_handler = perf_cpu_time_max_percent_handler,
1206 .extra1 = &zero,
1207 .extra2 = &one_hundred,
1208 },
1ccd1549 1209#endif
dfec072e
VN		 1210#ifdef CONFIG_KMEMCHECK
1211 {
dfec072e
VN		 1212 .procname = "kmemcheck",
1213 .data = &kmemcheck_enabled,
1214 .maxlen = sizeof(int),
1215 .mode = 0644,
6d456111 1216 .proc_handler = proc_dointvec,
dfec072e 1217 },
cb684b5b 1218#endif
9e3961a0
PB		 1219 {
1220 .procname = "panic_on_warn",
1221 .data = &panic_on_warn,
1222 .maxlen = sizeof(int),
1223 .mode = 0644,
1224 .proc_handler = proc_dointvec_minmax,
1225 .extra1 = &zero,
1226 .extra2 = &one,
1227 },
bc7a34b8
TG		 1228#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
1229 {
1230 .procname = "timer_migration",
1231 .data = &sysctl_timer_migration,
1232 .maxlen = sizeof(unsigned int),
1233 .mode = 0644,
1234 .proc_handler = timer_migration_handler,
5e9b526f
MJ		 1235 .extra1 = &zero,
1236 .extra2 = &one,
bc7a34b8 1237 },
1be7f75d
AS		 1238#endif
1239#ifdef CONFIG_BPF_SYSCALL
1240 {
1241 .procname = "unprivileged_bpf_disabled",
1242 .data = &sysctl_unprivileged_bpf_disabled,
1243 .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
1244 .mode = 0644,
1245 /* only handle a transition from default "0" to "1" */
1246 .proc_handler = proc_dointvec_minmax,
1247 .extra1 = &one,
1248 .extra2 = &one,
1249 },
bc7a34b8 1250#endif
6fce56ec 1251 { }
1da177e4
LT		 1252};
1253
d8217f07 1254static struct ctl_table vm_table[] = {
1da177e4 1255 {
1da177e4
LT		 1256 .procname = "overcommit_memory",
1257 .data = &sysctl_overcommit_memory,
1258 .maxlen = sizeof(sysctl_overcommit_memory),
1259 .mode = 0644,
cb16e95f
PH		 1260 .proc_handler = proc_dointvec_minmax,
1261 .extra1 = &zero,
1262 .extra2 = &two,
1da177e4 1263 },
fadd8fbd 1264 {
fadd8fbd
KH		 1265 .procname = "panic_on_oom",
1266 .data = &sysctl_panic_on_oom,
1267 .maxlen = sizeof(sysctl_panic_on_oom),
1268 .mode = 0644,
cb16e95f
PH		 1269 .proc_handler = proc_dointvec_minmax,
1270 .extra1 = &zero,
1271 .extra2 = &two,
fadd8fbd 1272 },
fe071d7e 1273 {
fe071d7e
DR		 1274 .procname = "oom_kill_allocating_task",
1275 .data = &sysctl_oom_kill_allocating_task,
1276 .maxlen = sizeof(sysctl_oom_kill_allocating_task),
1277 .mode = 0644,
6d456111 1278 .proc_handler = proc_dointvec,
fe071d7e 1279 },
fef1bdd6 1280 {
fef1bdd6
DR		 1281 .procname = "oom_dump_tasks",
1282 .data = &sysctl_oom_dump_tasks,
1283 .maxlen = sizeof(sysctl_oom_dump_tasks),
1284 .mode = 0644,
6d456111 1285 .proc_handler = proc_dointvec,
fef1bdd6 1286 },
1da177e4 1287 {
1da177e4
LT		 1288 .procname = "overcommit_ratio",
1289 .data = &sysctl_overcommit_ratio,
1290 .maxlen = sizeof(sysctl_overcommit_ratio),
1291 .mode = 0644,
49f0ce5f
JM		 1292 .proc_handler = overcommit_ratio_handler,
1293 },
1294 {
1295 .procname = "overcommit_kbytes",
1296 .data = &sysctl_overcommit_kbytes,
1297 .maxlen = sizeof(sysctl_overcommit_kbytes),
1298 .mode = 0644,
1299 .proc_handler = overcommit_kbytes_handler,
1da177e4
LT		 1300 },
1301 {
1da177e4
LT		 1302 .procname = "page-cluster",
1303 .data = &page_cluster,
1304 .maxlen = sizeof(int),
1305 .mode = 0644,
cb16e95f
PH		 1306 .proc_handler = proc_dointvec_minmax,
1307 .extra1 = &zero,
1da177e4
LT		 1308 },
1309 {
1da177e4
LT		 1310 .procname = "dirty_background_ratio",
1311 .data = &dirty_background_ratio,
1312 .maxlen = sizeof(dirty_background_ratio),
1313 .mode = 0644,
6d456111 1314 .proc_handler = dirty_background_ratio_handler,
1da177e4
LT		 1315 .extra1 = &zero,
1316 .extra2 = &one_hundred,
1317 },
2da02997 1318 {
2da02997
DR		 1319 .procname = "dirty_background_bytes",
1320 .data = &dirty_background_bytes,
1321 .maxlen = sizeof(dirty_background_bytes),
1322 .mode = 0644,
6d456111 1323 .proc_handler = dirty_background_bytes_handler,
fc3501d4 1324 .extra1 = &one_ul,
2da02997 1325 },
1da177e4 1326 {
1da177e4
LT		 1327 .procname = "dirty_ratio",
1328 .data = &vm_dirty_ratio,
1329 .maxlen = sizeof(vm_dirty_ratio),
1330 .mode = 0644,
6d456111 1331 .proc_handler = dirty_ratio_handler,
1da177e4
LT		 1332 .extra1 = &zero,
1333 .extra2 = &one_hundred,
1334 },
2da02997 1335 {
2da02997
DR		 1336 .procname = "dirty_bytes",
1337 .data = &vm_dirty_bytes,
1338 .maxlen = sizeof(vm_dirty_bytes),
1339 .mode = 0644,
6d456111 1340 .proc_handler = dirty_bytes_handler,
9e4a5bda 1341 .extra1 = &dirty_bytes_min,
2da02997 1342 },
1da177e4 1343 {
1da177e4 1344 .procname = "dirty_writeback_centisecs",
f6ef9438
BS		 1345 .data = &dirty_writeback_interval,
1346 .maxlen = sizeof(dirty_writeback_interval),
1da177e4 1347 .mode = 0644,
6d456111 1348 .proc_handler = dirty_writeback_centisecs_handler,
1da177e4
LT		 1349 },
1350 {
1da177e4 1351 .procname = "dirty_expire_centisecs",
f6ef9438
BS		 1352 .data = &dirty_expire_interval,
1353 .maxlen = sizeof(dirty_expire_interval),
1da177e4 1354 .mode = 0644,
cb16e95f
PH		 1355 .proc_handler = proc_dointvec_minmax,
1356 .extra1 = &zero,
1da177e4 1357 },
1efff914
TT		 1358 {
1359 .procname = "dirtytime_expire_seconds",
1360 .data = &dirtytime_expire_interval,
1361 .maxlen = sizeof(dirty_expire_interval),
1362 .mode = 0644,
1363 .proc_handler = dirtytime_interval_handler,
1364 .extra1 = &zero,
1365 },
1da177e4 1366 {
3965c9ae
WL		 1367 .procname = "nr_pdflush_threads",
1368 .mode = 0444 /* read-only */,
1369 .proc_handler = pdflush_proc_obsolete,
1da177e4
LT		 1370 },
1371 {
1da177e4
LT		 1372 .procname = "swappiness",
1373 .data = &vm_swappiness,
1374 .maxlen = sizeof(vm_swappiness),
1375 .mode = 0644,
6d456111 1376 .proc_handler = proc_dointvec_minmax,
1da177e4 1377 .extra1 = &zero,
1cac41cb
MB		 1378#ifdef CONFIG_INCREASE_MAXIMUM_SWAPPINESS
1379 .extra2 = &max_swappiness,
1380#else
1da177e4 1381 .extra2 = &one_hundred,
1cac41cb 1382#endif
1da177e4
LT		 1383 },
1384#ifdef CONFIG_HUGETLB_PAGE
06808b08 1385 {
1da177e4 1386 .procname = "nr_hugepages",
e5ff2159 1387 .data = NULL,
1da177e4
LT		 1388 .maxlen = sizeof(unsigned long),
1389 .mode = 0644,
6d456111 1390 .proc_handler = hugetlb_sysctl_handler,
06808b08
LS		 1391 },
1392#ifdef CONFIG_NUMA
1393 {
1394 .procname = "nr_hugepages_mempolicy",
1395 .data = NULL,
1396 .maxlen = sizeof(unsigned long),
1397 .mode = 0644,
1398 .proc_handler = &hugetlb_mempolicy_sysctl_handler,
06808b08
LS		 1399 },
1400#endif
1da177e4 1401 {
1da177e4
LT		 1402 .procname = "hugetlb_shm_group",
1403 .data = &sysctl_hugetlb_shm_group,
1404 .maxlen = sizeof(gid_t),
1405 .mode = 0644,
6d456111 1406 .proc_handler = proc_dointvec,
1da177e4 1407 },
396faf03 1408 {
396faf03
MG		 1409 .procname = "hugepages_treat_as_movable",
1410 .data = &hugepages_treat_as_movable,
1411 .maxlen = sizeof(int),
1412 .mode = 0644,
86cdb465 1413 .proc_handler = proc_dointvec,
396faf03 1414 },
d1c3fb1f 1415 {
d1c3fb1f 1416 .procname = "nr_overcommit_hugepages",
e5ff2159
AK		 1417 .data = NULL,
1418 .maxlen = sizeof(unsigned long),
d1c3fb1f 1419 .mode = 0644,
6d456111 1420 .proc_handler = hugetlb_overcommit_handler,
d1c3fb1f 1421 },
1da177e4
LT		 1422#endif
1423 {
1da177e4
LT		 1424 .procname = "lowmem_reserve_ratio",
1425 .data = &sysctl_lowmem_reserve_ratio,
1426 .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
1427 .mode = 0644,
6d456111 1428 .proc_handler = lowmem_reserve_ratio_sysctl_handler,
1da177e4 1429 },
9d0243bc 1430 {
9d0243bc
AM		 1431 .procname = "drop_caches",
1432 .data = &sysctl_drop_caches,
1433 .maxlen = sizeof(int),
1434 .mode = 0644,
1435 .proc_handler = drop_caches_sysctl_handler,
cb16e95f 1436 .extra1 = &one,
5509a5d2 1437 .extra2 = &four,
9d0243bc 1438 },
76ab0f53
MG		 1439#ifdef CONFIG_COMPACTION
1440 {
1441 .procname = "compact_memory",
1442 .data = &sysctl_compact_memory,
1443 .maxlen = sizeof(int),
1444 .mode = 0200,
1445 .proc_handler = sysctl_compaction_handler,
1446 },
5e771905
MG		 1447 {
1448 .procname = "extfrag_threshold",
1449 .data = &sysctl_extfrag_threshold,
1450 .maxlen = sizeof(int),
1451 .mode = 0644,
1452 .proc_handler = sysctl_extfrag_handler,
1453 .extra1 = &min_extfrag_threshold,
1454 .extra2 = &max_extfrag_threshold,
1455 },
5bbe3547
EM		 1456 {
1457 .procname = "compact_unevictable_allowed",
1458 .data = &sysctl_compact_unevictable_allowed,
1459 .maxlen = sizeof(int),
1460 .mode = 0644,
1461 .proc_handler = proc_dointvec,
1462 .extra1 = &zero,
1463 .extra2 = &one,
1464 },
5e771905 1465
76ab0f53 1466#endif /* CONFIG_COMPACTION */
1da177e4 1467 {
1da177e4
LT		 1468 .procname = "min_free_kbytes",
1469 .data = &min_free_kbytes,
1470 .maxlen = sizeof(min_free_kbytes),
1471 .mode = 0644,
6d456111 1472 .proc_handler = min_free_kbytes_sysctl_handler,
1da177e4
LT		 1473 .extra1 = &zero,
1474 },
f8ade366
RR		 1475 {
1476 .procname = "extra_free_kbytes",
1477 .data = &extra_free_kbytes,
1478 .maxlen = sizeof(extra_free_kbytes),
1479 .mode = 0644,
1480 .proc_handler = min_free_kbytes_sysctl_handler,
1481 .extra1 = &zero,
1482 },
8ad4b1fb 1483 {
8ad4b1fb
RS		 1484 .procname = "percpu_pagelist_fraction",
1485 .data = &percpu_pagelist_fraction,
1486 .maxlen = sizeof(percpu_pagelist_fraction),
1487 .mode = 0644,
6d456111 1488 .proc_handler = percpu_pagelist_fraction_sysctl_handler,
7cd2b0a3 1489 .extra1 = &zero,
8ad4b1fb 1490 },
1da177e4
LT		 1491#ifdef CONFIG_MMU
1492 {
1da177e4
LT		 1493 .procname = "max_map_count",
1494 .data = &sysctl_max_map_count,
1495 .maxlen = sizeof(sysctl_max_map_count),
1496 .mode = 0644,
3e26120c 1497 .proc_handler = proc_dointvec_minmax,
70da2340 1498 .extra1 = &zero,
1da177e4 1499 },
dd8632a1
PM		 1500#else
1501 {
dd8632a1
PM		 1502 .procname = "nr_trim_pages",
1503 .data = &sysctl_nr_trim_pages,
1504 .maxlen = sizeof(sysctl_nr_trim_pages),
1505 .mode = 0644,
6d456111 1506 .proc_handler = proc_dointvec_minmax,
dd8632a1
PM		 1507 .extra1 = &zero,
1508 },
1da177e4
LT		 1509#endif
1510 {
1da177e4
LT		 1511 .procname = "laptop_mode",
1512 .data = &laptop_mode,
1513 .maxlen = sizeof(laptop_mode),
1514 .mode = 0644,
6d456111 1515 .proc_handler = proc_dointvec_jiffies,
1da177e4
LT		 1516 },
1517 {
1da177e4
LT		 1518 .procname = "block_dump",
1519 .data = &block_dump,
1520 .maxlen = sizeof(block_dump),
1521 .mode = 0644,
6d456111 1522 .proc_handler = proc_dointvec,
1da177e4
LT		 1523 .extra1 = &zero,
1524 },
1525 {
1da177e4
LT		 1526 .procname = "vfs_cache_pressure",
1527 .data = &sysctl_vfs_cache_pressure,
1528 .maxlen = sizeof(sysctl_vfs_cache_pressure),
1529 .mode = 0644,
6d456111 1530 .proc_handler = proc_dointvec,
1da177e4
LT		 1531 .extra1 = &zero,
1532 },
1533#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
1534 {
1da177e4
LT		 1535 .procname = "legacy_va_layout",
1536 .data = &sysctl_legacy_va_layout,
1537 .maxlen = sizeof(sysctl_legacy_va_layout),
1538 .mode = 0644,
6d456111 1539 .proc_handler = proc_dointvec,
1da177e4
LT		 1540 .extra1 = &zero,
1541 },
1542#endif
1743660b
CL		 1543#ifdef CONFIG_NUMA
1544 {
1743660b
CL		 1545 .procname = "zone_reclaim_mode",
1546 .data = &zone_reclaim_mode,
1547 .maxlen = sizeof(zone_reclaim_mode),
1548 .mode = 0644,
6d456111 1549 .proc_handler = proc_dointvec,
c84db23c 1550 .extra1 = &zero,
1743660b 1551 },
9614634f 1552 {
9614634f
CL		 1553 .procname = "min_unmapped_ratio",
1554 .data = &sysctl_min_unmapped_ratio,
1555 .maxlen = sizeof(sysctl_min_unmapped_ratio),
1556 .mode = 0644,
6d456111 1557 .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
9614634f
CL		 1558 .extra1 = &zero,
1559 .extra2 = &one_hundred,
1560 },
0ff38490 1561 {
0ff38490
CL		 1562 .procname = "min_slab_ratio",
1563 .data = &sysctl_min_slab_ratio,
1564 .maxlen = sizeof(sysctl_min_slab_ratio),
1565 .mode = 0644,
6d456111 1566 .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
0ff38490
CL		 1567 .extra1 = &zero,
1568 .extra2 = &one_hundred,
1569 },
e6e5494c 1570#endif
77461ab3
CL		 1571#ifdef CONFIG_SMP
1572 {
77461ab3
CL		 1573 .procname = "stat_interval",
1574 .data = &sysctl_stat_interval,
1575 .maxlen = sizeof(sysctl_stat_interval),
1576 .mode = 0644,
6d456111 1577 .proc_handler = proc_dointvec_jiffies,
77461ab3
CL		 1578 },
1579#endif
6e141546 1580#ifdef CONFIG_MMU
ed032189 1581 {
ed032189 1582 .procname = "mmap_min_addr",
788084ab
EP		 1583 .data = &dac_mmap_min_addr,
1584 .maxlen = sizeof(unsigned long),
ed032189 1585 .mode = 0644,
6d456111 1586 .proc_handler = mmap_min_addr_handler,
ed032189 1587 },
6e141546 1588#endif
f0c0b2b8
KH		 1589#ifdef CONFIG_NUMA
1590 {
f0c0b2b8
KH		 1591 .procname = "numa_zonelist_order",
1592 .data = &numa_zonelist_order,
1593 .maxlen = NUMA_ZONELIST_ORDER_LEN,
1594 .mode = 0644,
6d456111 1595 .proc_handler = numa_zonelist_order_handler,
f0c0b2b8
KH		 1596 },
1597#endif
2b8232ce 1598#if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \
5c36e657 1599 (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL))
e6e5494c 1600 {
e6e5494c 1601 .procname = "vdso_enabled",
3d7ee969
AL		 1602#ifdef CONFIG_X86_32
1603 .data = &vdso32_enabled,
1604 .maxlen = sizeof(vdso32_enabled),
1605#else
e6e5494c
IM		 1606 .data = &vdso_enabled,
1607 .maxlen = sizeof(vdso_enabled),
3d7ee969 1608#endif
e6e5494c 1609 .mode = 0644,
6d456111 1610 .proc_handler = proc_dointvec,
e6e5494c
IM		 1611 .extra1 = &zero,
1612 },
1da177e4 1613#endif
195cf453
BG		 1614#ifdef CONFIG_HIGHMEM
1615 {
195cf453
BG		 1616 .procname = "highmem_is_dirtyable",
1617 .data = &vm_highmem_is_dirtyable,
1618 .maxlen = sizeof(vm_highmem_is_dirtyable),
1619 .mode = 0644,
6d456111 1620 .proc_handler = proc_dointvec_minmax,
195cf453
BG		 1621 .extra1 = &zero,
1622 .extra2 = &one,
1623 },
1624#endif
6a46079c
AK		 1625#ifdef CONFIG_MEMORY_FAILURE
1626 {
6a46079c
AK		 1627 .procname = "memory_failure_early_kill",
1628 .data = &sysctl_memory_failure_early_kill,
1629 .maxlen = sizeof(sysctl_memory_failure_early_kill),
1630 .mode = 0644,
6d456111 1631 .proc_handler = proc_dointvec_minmax,
6a46079c
AK		 1632 .extra1 = &zero,
1633 .extra2 = &one,
1634 },
1635 {
6a46079c
AK		 1636 .procname = "memory_failure_recovery",
1637 .data = &sysctl_memory_failure_recovery,
1638 .maxlen = sizeof(sysctl_memory_failure_recovery),
1639 .mode = 0644,
6d456111 1640 .proc_handler = proc_dointvec_minmax,
6a46079c
AK		 1641 .extra1 = &zero,
1642 .extra2 = &one,
1643 },
1644#endif
c9b1d098
AS		 1645 {
1646 .procname = "user_reserve_kbytes",
1647 .data = &sysctl_user_reserve_kbytes,
1648 .maxlen = sizeof(sysctl_user_reserve_kbytes),
1649 .mode = 0644,
1650 .proc_handler = proc_doulongvec_minmax,
1651 },
4eeab4f5
AS		 1652 {
1653 .procname = "admin_reserve_kbytes",
1654 .data = &sysctl_admin_reserve_kbytes,
1655 .maxlen = sizeof(sysctl_admin_reserve_kbytes),
1656 .mode = 0644,
1657 .proc_handler = proc_doulongvec_minmax,
1658 },
d49d8876 1659#ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS
1660 {
1661 .procname = "mmap_rnd_bits",
1662 .data = &mmap_rnd_bits,
1663 .maxlen = sizeof(mmap_rnd_bits),
1664 .mode = 0600,
1665 .proc_handler = proc_dointvec_minmax,
1666 .extra1 = (void *)&mmap_rnd_bits_min,
1667 .extra2 = (void *)&mmap_rnd_bits_max,
1668 },
1669#endif
1670#ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS
1671 {
1672 .procname = "mmap_rnd_compat_bits",
1673 .data = &mmap_rnd_compat_bits,
1674 .maxlen = sizeof(mmap_rnd_compat_bits),
1675 .mode = 0600,
1676 .proc_handler = proc_dointvec_minmax,
1677 .extra1 = (void *)&mmap_rnd_compat_bits_min,
1678 .extra2 = (void *)&mmap_rnd_compat_bits_max,
1679 },
1680#endif
6fce56ec 1681 { }
1da177e4
LT		 1682};
1683
d8217f07 1684static struct ctl_table fs_table[] = {
1da177e4 1685 {
1da177e4
LT		 1686 .procname = "inode-nr",
1687 .data = &inodes_stat,
3942c07c 1688 .maxlen = 2*sizeof(long),
1da177e4 1689 .mode = 0444,
cffbc8aa 1690 .proc_handler = proc_nr_inodes,
1da177e4
LT		 1691 },
1692 {
1da177e4
LT		 1693 .procname = "inode-state",
1694 .data = &inodes_stat,
3942c07c 1695 .maxlen = 7*sizeof(long),
1da177e4 1696 .mode = 0444,
cffbc8aa 1697 .proc_handler = proc_nr_inodes,
1da177e4
LT		 1698 },
1699 {
1da177e4
LT		 1700 .procname = "file-nr",
1701 .data = &files_stat,
518de9b3 1702 .maxlen = sizeof(files_stat),
1da177e4 1703 .mode = 0444,
6d456111 1704 .proc_handler = proc_nr_files,
1da177e4
LT		 1705 },
1706 {
1da177e4
LT		 1707 .procname = "file-max",
1708 .data = &files_stat.max_files,
518de9b3 1709 .maxlen = sizeof(files_stat.max_files),
1da177e4 1710 .mode = 0644,
518de9b3 1711 .proc_handler = proc_doulongvec_minmax,
1da177e4 1712 },
9cfe015a 1713 {
9cfe015a
ED		 1714 .procname = "nr_open",
1715 .data = &sysctl_nr_open,
1716 .maxlen = sizeof(int),
1717 .mode = 0644,
6d456111 1718 .proc_handler = proc_dointvec_minmax,
eceea0b3
AV		 1719 .extra1 = &sysctl_nr_open_min,
1720 .extra2 = &sysctl_nr_open_max,
9cfe015a 1721 },
1da177e4 1722 {
1da177e4
LT		 1723 .procname = "dentry-state",
1724 .data = &dentry_stat,
3942c07c 1725 .maxlen = 6*sizeof(long),
1da177e4 1726 .mode = 0444,
312d3ca8 1727 .proc_handler = proc_nr_dentry,
1da177e4
LT		 1728 },
1729 {
1da177e4
LT		 1730 .procname = "overflowuid",
1731 .data = &fs_overflowuid,
1732 .maxlen = sizeof(int),
1733 .mode = 0644,
6d456111 1734 .proc_handler = proc_dointvec_minmax,
1da177e4
LT		 1735 .extra1 = &minolduid,
1736 .extra2 = &maxolduid,
1737 },
1738 {
1da177e4
LT		 1739 .procname = "overflowgid",
1740 .data = &fs_overflowgid,
1741 .maxlen = sizeof(int),
1742 .mode = 0644,
6d456111 1743 .proc_handler = proc_dointvec_minmax,
1da177e4
LT		 1744 .extra1 = &minolduid,
1745 .extra2 = &maxolduid,
1746 },
bfcd17a6 1747#ifdef CONFIG_FILE_LOCKING
1da177e4 1748 {
1da177e4
LT		 1749 .procname = "leases-enable",
1750 .data = &leases_enable,
1751 .maxlen = sizeof(int),
1752 .mode = 0644,
6d456111 1753 .proc_handler = proc_dointvec,
1da177e4 1754 },
bfcd17a6 1755#endif
1da177e4
LT		 1756#ifdef CONFIG_DNOTIFY
1757 {
1da177e4
LT		 1758 .procname = "dir-notify-enable",
1759 .data = &dir_notify_enable,
1760 .maxlen = sizeof(int),
1761 .mode = 0644,
6d456111 1762 .proc_handler = proc_dointvec,
1da177e4
LT		 1763 },
1764#endif
1765#ifdef CONFIG_MMU
bfcd17a6 1766#ifdef CONFIG_FILE_LOCKING
1da177e4 1767 {
1da177e4
LT		 1768 .procname = "lease-break-time",
1769 .data = &lease_break_time,
1770 .maxlen = sizeof(int),
1771 .mode = 0644,
6d456111 1772 .proc_handler = proc_dointvec,
1da177e4 1773 },
bfcd17a6 1774#endif
ebf3f09c 1775#ifdef CONFIG_AIO
1da177e4 1776 {
1da177e4
LT		 1777 .procname = "aio-nr",
1778 .data = &aio_nr,
1779 .maxlen = sizeof(aio_nr),
1780 .mode = 0444,
6d456111 1781 .proc_handler = proc_doulongvec_minmax,
1da177e4
LT		 1782 },
1783 {
1da177e4
LT		 1784 .procname = "aio-max-nr",
1785 .data = &aio_max_nr,
1786 .maxlen = sizeof(aio_max_nr),
1787 .mode = 0644,
6d456111 1788 .proc_handler = proc_doulongvec_minmax,
1da177e4 1789 },
ebf3f09c 1790#endif /* CONFIG_AIO */
2d9048e2 1791#ifdef CONFIG_INOTIFY_USER
0399cb08 1792 {
0399cb08
RL		 1793 .procname = "inotify",
1794 .mode = 0555,
1795 .child = inotify_table,
1796 },
1797#endif
7ef9964e
DL		 1798#ifdef CONFIG_EPOLL
1799 {
1800 .procname = "epoll",
1801 .mode = 0555,
1802 .child = epoll_table,
1803 },
1804#endif
1da177e4 1805#endif
800179c9
KC		 1806 {
1807 .procname = "protected_symlinks",
1808 .data = &sysctl_protected_symlinks,
1809 .maxlen = sizeof(int),
1810 .mode = 0600,
1811 .proc_handler = proc_dointvec_minmax,
1812 .extra1 = &zero,
1813 .extra2 = &one,
1814 },
1815 {
1816 .procname = "protected_hardlinks",
1817 .data = &sysctl_protected_hardlinks,
1818 .maxlen = sizeof(int),
1819 .mode = 0600,
1820 .proc_handler = proc_dointvec_minmax,
1821 .extra1 = &zero,
1822 .extra2 = &one,
1823 },
d6e71144 1824 {
d6e71144
AC		 1825 .procname = "suid_dumpable",
1826 .data = &suid_dumpable,
1827 .maxlen = sizeof(int),
1828 .mode = 0644,
54b50199 1829 .proc_handler = proc_dointvec_minmax_coredump,
8e654fba
MW		 1830 .extra1 = &zero,
1831 .extra2 = &two,
d6e71144 1832 },
2abc26fc
EB		 1833#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
1834 {
2abc26fc
EB		 1835 .procname = "binfmt_misc",
1836 .mode = 0555,
f9bd6733 1837 .child = sysctl_mount_point,
2abc26fc
EB		 1838 },
1839#endif
b492e95b 1840 {
ff9da691
JA		 1841 .procname = "pipe-max-size",
1842 .data = &pipe_max_size,
b492e95b
JA		 1843 .maxlen = sizeof(int),
1844 .mode = 0644,
ff9da691
JA		 1845 .proc_handler = &pipe_proc_fn,
1846 .extra1 = &pipe_min_size,
b492e95b 1847 },
fa6d0ba1
WT		 1848 {
1849 .procname = "pipe-user-pages-hard",
1850 .data = &pipe_user_pages_hard,
1851 .maxlen = sizeof(pipe_user_pages_hard),
1852 .mode = 0644,
1853 .proc_handler = proc_doulongvec_minmax,
1854 },
1855 {
1856 .procname = "pipe-user-pages-soft",
1857 .data = &pipe_user_pages_soft,
1858 .maxlen = sizeof(pipe_user_pages_soft),
1859 .mode = 0644,
1860 .proc_handler = proc_doulongvec_minmax,
1861 },
c50fd34e
EB		 1862 {
1863 .procname = "mount-max",
1864 .data = &sysctl_mount_max,
1865 .maxlen = sizeof(unsigned int),
1866 .mode = 0644,
1867 .proc_handler = proc_dointvec_minmax,
1868 .extra1 = &one,
1869 },
6fce56ec 1870 { }
1da177e4
LT		 1871};
1872
d8217f07 1873static struct ctl_table debug_table[] = {
7ac57a89 1874#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
abd4f750 1875 {
abd4f750
MAS		 1876 .procname = "exception-trace",
1877 .data = &show_unhandled_signals,
1878 .maxlen = sizeof(int),
1879 .mode = 0644,
1880 .proc_handler = proc_dointvec
1881 },
b2be84df
MH		 1882#endif
1883#if defined(CONFIG_OPTPROBES)
1884 {
1885 .procname = "kprobes-optimization",
1886 .data = &sysctl_kprobes_optimization,
1887 .maxlen = sizeof(int),
1888 .mode = 0644,
1889 .proc_handler = proc_kprobes_optimization_handler,
1890 .extra1 = &zero,
1891 .extra2 = &one,
1892 },
abd4f750 1893#endif
6fce56ec 1894 { }
1da177e4
LT		 1895};
1896
d8217f07 1897static struct ctl_table dev_table[] = {
6fce56ec 1898 { }
0eeca283 1899};
1da177e4 1900
de4e83bd 1901int __init sysctl_init(void)
d912b0cc 1902{
fd4b616b
SR		 1903 struct ctl_table_header *hdr;
1904
1905 hdr = register_sysctl_table(sysctl_base_table);
1906 kmemleak_not_leak(hdr);
d912b0cc
EB		 1907 return 0;
1908}
1909
b89a8171
EB		 1910#endif /* CONFIG_SYSCTL */
1911
1da177e4
LT		 1912/*
1913 * /proc/sys support
1914 */
1915
b89a8171 1916#ifdef CONFIG_PROC_SYSCTL
1da177e4 1917
f8808300
KC		 1918static int _proc_do_string(char *data, int maxlen, int write,
1919 char __user *buffer,
b1ba4ddd 1920 size_t *lenp, loff_t *ppos)
1da177e4
LT		 1921{
1922 size_t len;
1923 char __user *p;
1924 char c;
8d060877
ON		 1925
1926 if (!data || !maxlen || !*lenp) {
1da177e4
LT		 1927 *lenp = 0;
1928 return 0;
1929 }
8d060877 1930
1da177e4 1931 if (write) {
f4aacea2
KC		 1932 if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) {
1933 /* Only continue writes not past the end of buffer. */
1934 len = strlen(data);
1935 if (len > maxlen - 1)
1936 len = maxlen - 1;
1937
1938 if (*ppos > len)
1939 return 0;
1940 len = *ppos;
1941 } else {
1942 /* Start writing from beginning of buffer. */
1943 len = 0;
1944 }
1945
2ca9bb45 1946 *ppos += *lenp;
1da177e4 1947 p = buffer;
2ca9bb45 1948 while ((p - buffer) < *lenp && len < maxlen - 1) {
1da177e4
LT		 1949 if (get_user(c, p++))
1950 return -EFAULT;
1951 if (c == 0 || c == '\n')
1952 break;
2ca9bb45 1953 data[len++] = c;
1da177e4 1954 }
f8808300 1955 data[len] = 0;
1da177e4 1956 } else {
f5dd3d6f
SV		 1957 len = strlen(data);
1958 if (len > maxlen)
1959 len = maxlen;
8d060877
ON		 1960
1961 if (*ppos > len) {
1962 *lenp = 0;
1963 return 0;
1964 }
1965
1966 data += *ppos;
1967 len -= *ppos;
1968
1da177e4
LT		 1969 if (len > *lenp)
1970 len = *lenp;
1971 if (len)
f8808300 1972 if (copy_to_user(buffer, data, len))
1da177e4
LT		 1973 return -EFAULT;
1974 if (len < *lenp) {
f8808300 1975 if (put_user('\n', buffer + len))
1da177e4
LT		 1976 return -EFAULT;
1977 len++;
1978 }
1979 *lenp = len;
1980 *ppos += len;
1981 }
1982 return 0;
1983}
1984
f4aacea2
KC		 1985static void warn_sysctl_write(struct ctl_table *table)
1986{
1987 pr_warn_once("%s wrote to %s when file position was not 0!\n"
1988 "This will not be supported in the future. To silence this\n"
1989 "warning, set kernel.sysctl_writes_strict = -1\n",
1990 current->comm, table->procname);
1991}
1992
f5dd3d6f
SV		 1993/**
1994 * proc_dostring - read a string sysctl
1995 * @table: the sysctl table
1996 * @write: %TRUE if this is a write to the sysctl file
f5dd3d6f
SV		 1997 * @buffer: the user buffer
1998 * @lenp: the size of the user buffer
1999 * @ppos: file position
2000 *
2001 * Reads/writes a string from/to the user buffer. If the kernel
2002 * buffer provided is not large enough to hold the string, the
2003 * string is truncated. The copied string is %NULL-terminated.
2004 * If the string is being read by the user process, it is copied
2005 * and a newline '\n' is added. It is truncated if the buffer is
2006 * not large enough.
2007 *
2008 * Returns 0 on success.
2009 */
8d65af78 2010int proc_dostring(struct ctl_table *table, int write,
f5dd3d6f
SV		 2011 void __user *buffer, size_t *lenp, loff_t *ppos)
2012{
f4aacea2
KC		 2013 if (write && *ppos && sysctl_writes_strict == SYSCTL_WRITES_WARN)
2014 warn_sysctl_write(table);
2015
f8808300
KC		 2016 return _proc_do_string((char *)(table->data), table->maxlen, write,
2017 (char __user *)buffer, lenp, ppos);
f5dd3d6f
SV		 2018}
2019
00b7c339
AW		 2020static size_t proc_skip_spaces(char **buf)
2021{
2022 size_t ret;
2023 char *tmp = skip_spaces(*buf);
2024 ret = tmp - *buf;
2025 *buf = tmp;
2026 return ret;
2027}
2028
9f977fb7
OP		 2029static void proc_skip_char(char **buf, size_t *size, const char v)
2030{
2031 while (*size) {
2032 if (**buf != v)
2033 break;
2034 (*size)--;
2035 (*buf)++;
2036 }
2037}
2038
00b7c339
AW		 2039#define TMPBUFLEN 22
2040/**
0fc377bd 2041 * proc_get_long - reads an ASCII formatted integer from a user buffer
00b7c339 2042 *
0fc377bd
RD		 2043 * @buf: a kernel buffer
2044 * @size: size of the kernel buffer
2045 * @val: this is where the number will be stored
2046 * @neg: set to %TRUE if number is negative
2047 * @perm_tr: a vector which contains the allowed trailers
2048 * @perm_tr_len: size of the perm_tr vector
2049 * @tr: pointer to store the trailer character
00b7c339 2050 *
0fc377bd
RD		 2051 * In case of success %0 is returned and @buf and @size are updated with
2052 * the amount of bytes read. If @tr is non-NULL and a trailing
2053 * character exists (size is non-zero after returning from this
2054 * function), @tr is updated with the trailing character.
00b7c339
AW		 2055 */
2056static int proc_get_long(char **buf, size_t *size,
2057 unsigned long *val, bool *neg,
2058 const char *perm_tr, unsigned perm_tr_len, char *tr)
2059{
2060 int len;
2061 char *p, tmp[TMPBUFLEN];
2062
2063 if (!*size)
2064 return -EINVAL;
2065
2066 len = *size;
2067 if (len > TMPBUFLEN - 1)
2068 len = TMPBUFLEN - 1;
2069
2070 memcpy(tmp, *buf, len);
2071
2072 tmp[len] = 0;
2073 p = tmp;
2074 if (*p == '-' && *size > 1) {
2075 *neg = true;
2076 p++;
2077 } else
2078 *neg = false;
2079 if (!isdigit(*p))
2080 return -EINVAL;
2081
2082 *val = simple_strtoul(p, &p, 0);
2083
2084 len = p - tmp;
2085
2086 /* We don't know if the next char is whitespace thus we may accept
2087 * invalid integers (e.g. 1234...a) or two integers instead of one
2088 * (e.g. 123...1). So lets not allow such large numbers. */
2089 if (len == TMPBUFLEN - 1)
2090 return -EINVAL;
2091
2092 if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len))
2093 return -EINVAL;
1da177e4 2094
00b7c339
AW		 2095 if (tr && (len < *size))
2096 *tr = *p;
2097
2098 *buf += len;
2099 *size -= len;
2100
2101 return 0;
2102}
2103
2104/**
0fc377bd 2105 * proc_put_long - converts an integer to a decimal ASCII formatted string
00b7c339 2106 *
0fc377bd
RD		 2107 * @buf: the user buffer
2108 * @size: the size of the user buffer
2109 * @val: the integer to be converted
2110 * @neg: sign of the number, %TRUE for negative
00b7c339 2111 *
0fc377bd
RD		 2112 * In case of success %0 is returned and @buf and @size are updated with
2113 * the amount of bytes written.
00b7c339
AW		 2114 */
2115static int proc_put_long(void __user **buf, size_t *size, unsigned long val,
2116 bool neg)
2117{
2118 int len;
2119 char tmp[TMPBUFLEN], *p = tmp;
2120
2121 sprintf(p, "%s%lu", neg ? "-" : "", val);
2122 len = strlen(tmp);
2123 if (len > *size)
2124 len = *size;
2125 if (copy_to_user(*buf, tmp, len))
2126 return -EFAULT;
2127 *size -= len;
2128 *buf += len;
2129 return 0;
2130}
2131#undef TMPBUFLEN
2132
2133static int proc_put_char(void __user **buf, size_t *size, char c)
2134{
2135 if (*size) {
2136 char __user **buffer = (char __user **)buf;
2137 if (put_user(c, *buffer))
2138 return -EFAULT;
2139 (*size)--, (*buffer)++;
2140 *buf = *buffer;
2141 }
2142 return 0;
2143}
1da177e4 2144
00b7c339 2145static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
1da177e4
LT		 2146 int *valp,
2147 int write, void *data)
2148{
2149 if (write) {
230633d1
HS		 2150 if (*negp) {
2151 if (*lvalp > (unsigned long) INT_MAX + 1)
2152 return -EINVAL;
2153 *valp = -*lvalp;
2154 } else {
2155 if (*lvalp > (unsigned long) INT_MAX)
2156 return -EINVAL;
2157 *valp = *lvalp;
2158 }
1da177e4
LT		 2159 } else {
2160 int val = *valp;
2161 if (val < 0) {
00b7c339 2162 *negp = true;
9a5bc726 2163 *lvalp = -(unsigned long)val;
1da177e4 2164 } else {
00b7c339 2165 *negp = false;
1da177e4
LT		 2166 *lvalp = (unsigned long)val;
2167 }
2168 }
2169 return 0;
2170}
2171
70cd763e
SAK		 2172static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp,
2173 int *valp,
2174 int write, void *data)
2175{
2176 if (write) {
2177 if (*negp)
2178 return -EINVAL;
a2148222
LZ		 2179 if (*lvalp > UINT_MAX)
2180 return -EINVAL;
70cd763e
SAK		 2181 *valp = *lvalp;
2182 } else {
2183 unsigned int val = *valp;
e8505e64 2184 *negp = false;
70cd763e
SAK		 2185 *lvalp = (unsigned long)val;
2186 }
2187 return 0;
2188}
2189
00b7c339
AW		 2190static const char proc_wspace_sep[] = { ' ', '\t', '\n' };
2191
d8217f07 2192static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
8d65af78 2193 int write, void __user *buffer,
fcfbd547 2194 size_t *lenp, loff_t *ppos,
00b7c339 2195 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
1da177e4
LT		 2196 int write, void *data),
2197 void *data)
2198{
00b7c339
AW		 2199 int *i, vleft, first = 1, err = 0;
2200 unsigned long page = 0;
2201 size_t left;
2202 char *kbuf;
1da177e4 2203
00b7c339 2204 if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
1da177e4
LT		 2205 *lenp = 0;
2206 return 0;
2207 }
2208
fcfbd547 2209 i = (int *) tbl_data;
1da177e4
LT		 2210 vleft = table->maxlen / sizeof(*i);
2211 left = *lenp;
2212
2213 if (!conv)
2214 conv = do_proc_dointvec_conv;
2215
00b7c339 2216 if (write) {
f4aacea2
KC		 2217 if (*ppos) {
2218 switch (sysctl_writes_strict) {
2219 case SYSCTL_WRITES_STRICT:
2220 goto out;
2221 case SYSCTL_WRITES_WARN:
2222 warn_sysctl_write(table);
2223 break;
2224 default:
2225 break;
2226 }
2227 }
2228
00b7c339
AW		 2229 if (left > PAGE_SIZE - 1)
2230 left = PAGE_SIZE - 1;
2231 page = __get_free_page(GFP_TEMPORARY);
2232 kbuf = (char *) page;
2233 if (!kbuf)
2234 return -ENOMEM;
2235 if (copy_from_user(kbuf, buffer, left)) {
2236 err = -EFAULT;
2237 goto free;
2238 }
2239 kbuf[left] = 0;
2240 }
2241
1da177e4 2242 for (; left && vleft--; i++, first=0) {
00b7c339
AW		 2243 unsigned long lval;
2244 bool neg;
1da177e4 2245
00b7c339
AW		 2246 if (write) {
2247 left -= proc_skip_spaces(&kbuf);
1da177e4 2248
563b0467
O		 2249 if (!left)
2250 break;
00b7c339
AW		 2251 err = proc_get_long(&kbuf, &left, &lval, &neg,
2252 proc_wspace_sep,
2253 sizeof(proc_wspace_sep), NULL);
2254 if (err)
1da177e4 2255 break;
00b7c339
AW		 2256 if (conv(&neg, &lval, i, 1, data)) {
2257 err = -EINVAL;
1da177e4 2258 break;
00b7c339 2259 }
1da177e4 2260 } else {
00b7c339
AW		 2261 if (conv(&neg, &lval, i, 0, data)) {
2262 err = -EINVAL;
2263 break;
2264 }
1da177e4 2265 if (!first)
00b7c339
AW		 2266 err = proc_put_char(&buffer, &left, '\t');
2267 if (err)
2268 break;
2269 err = proc_put_long(&buffer, &left, lval, neg);
2270 if (err)
1da177e4 2271 break;
1da177e4
LT		 2272 }
2273 }
2274
00b7c339
AW		 2275 if (!write && !first && left && !err)
2276 err = proc_put_char(&buffer, &left, '\n');
563b0467 2277 if (write && !err && left)
00b7c339
AW		 2278 left -= proc_skip_spaces(&kbuf);
2279free:
1da177e4 2280 if (write) {
00b7c339
AW		 2281 free_page(page);
2282 if (first)
2283 return err ? : -EINVAL;
1da177e4 2284 }
1da177e4 2285 *lenp -= left;
f4aacea2 2286out:
1da177e4 2287 *ppos += *lenp;
00b7c339 2288 return err;
1da177e4
LT		 2289}
2290
8d65af78 2291static int do_proc_dointvec(struct ctl_table *table, int write,
fcfbd547 2292 void __user *buffer, size_t *lenp, loff_t *ppos,
00b7c339 2293 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
fcfbd547
KK		 2294 int write, void *data),
2295 void *data)
2296{
8d65af78 2297 return __do_proc_dointvec(table->data, table, write,
fcfbd547
KK		 2298 buffer, lenp, ppos, conv, data);
2299}
2300
1da177e4
LT		 2301/**
2302 * proc_dointvec - read a vector of integers
2303 * @table: the sysctl table
2304 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2305 * @buffer: the user buffer
2306 * @lenp: the size of the user buffer
2307 * @ppos: file position
2308 *
2309 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2310 * values from/to the user buffer, treated as an ASCII string.
2311 *
2312 * Returns 0 on success.
2313 */
8d65af78 2314int proc_dointvec(struct ctl_table *table, int write,
1da177e4
LT		 2315 void __user *buffer, size_t *lenp, loff_t *ppos)
2316{
70cd763e
SAK		 2317 return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL);
2318}
2319
2320/**
2321 * proc_douintvec - read a vector of unsigned integers
2322 * @table: the sysctl table
2323 * @write: %TRUE if this is a write to the sysctl file
2324 * @buffer: the user buffer
2325 * @lenp: the size of the user buffer
2326 * @ppos: file position
2327 *
2328 * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer
2329 * values from/to the user buffer, treated as an ASCII string.
2330 *
2331 * Returns 0 on success.
2332 */
2333int proc_douintvec(struct ctl_table *table, int write,
2334 void __user *buffer, size_t *lenp, loff_t *ppos)
2335{
2336 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2337 do_proc_douintvec_conv, NULL);
1da177e4
LT		 2338}
2339
34f5a398 2340/*
25ddbb18
AK		 2341 * Taint values can only be increased
2342 * This means we can safely use a temporary.
34f5a398 2343 */
8d65af78 2344static int proc_taint(struct ctl_table *table, int write,
34f5a398
TT		 2345 void __user *buffer, size_t *lenp, loff_t *ppos)
2346{
25ddbb18
AK		 2347 struct ctl_table t;
2348 unsigned long tmptaint = get_taint();
2349 int err;
34f5a398 2350
91fcd412 2351 if (write && !capable(CAP_SYS_ADMIN))
34f5a398
TT		 2352 return -EPERM;
2353
25ddbb18
AK		 2354 t = *table;
2355 t.data = &tmptaint;
8d65af78 2356 err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos);
25ddbb18
AK		 2357 if (err < 0)
2358 return err;
2359
2360 if (write) {
2361 /*
2362 * Poor man's atomic or. Not worth adding a primitive
2363 * to everyone's atomic.h for this
2364 */
2365 int i;
2366 for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) {
2367 if ((tmptaint >> i) & 1)
373d4d09 2368 add_taint(i, LOCKDEP_STILL_OK);
25ddbb18
AK		 2369 }
2370 }
2371
2372 return err;
34f5a398
TT		 2373}
2374
bfdc0b49 2375#ifdef CONFIG_PRINTK
620f6e8e 2376static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
bfdc0b49
RW		 2377 void __user *buffer, size_t *lenp, loff_t *ppos)
2378{
2379 if (write && !capable(CAP_SYS_ADMIN))
2380 return -EPERM;
2381
2382 return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2383}
2384#endif
2385
1da177e4
LT		 2386struct do_proc_dointvec_minmax_conv_param {
2387 int *min;
2388 int *max;
2389};
2390
00b7c339
AW		 2391static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
2392 int *valp,
1da177e4
LT		 2393 int write, void *data)
2394{
2395 struct do_proc_dointvec_minmax_conv_param *param = data;
2396 if (write) {
2397 int val = *negp ? -*lvalp : *lvalp;
2398 if ((param->min && *param->min > val) ||
2399 (param->max && *param->max < val))
2400 return -EINVAL;
2401 *valp = val;
2402 } else {
2403 int val = *valp;
2404 if (val < 0) {
00b7c339 2405 *negp = true;
9a5bc726 2406 *lvalp = -(unsigned long)val;
1da177e4 2407 } else {
00b7c339 2408 *negp = false;
1da177e4
LT		 2409 *lvalp = (unsigned long)val;
2410 }
2411 }
2412 return 0;
2413}
2414
2415/**
2416 * proc_dointvec_minmax - read a vector of integers with min/max values
2417 * @table: the sysctl table
2418 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2419 * @buffer: the user buffer
2420 * @lenp: the size of the user buffer
2421 * @ppos: file position
2422 *
2423 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2424 * values from/to the user buffer, treated as an ASCII string.
2425 *
2426 * This routine will ensure the values are within the range specified by
2427 * table->extra1 (min) and table->extra2 (max).
2428 *
2429 * Returns 0 on success.
2430 */
8d65af78 2431int proc_dointvec_minmax(struct ctl_table *table, int write,
1da177e4
LT		 2432 void __user *buffer, size_t *lenp, loff_t *ppos)
2433{
2434 struct do_proc_dointvec_minmax_conv_param param = {
2435 .min = (int *) table->extra1,
2436 .max = (int *) table->extra2,
2437 };
8d65af78 2438 return do_proc_dointvec(table, write, buffer, lenp, ppos,
1da177e4
LT		 2439 do_proc_dointvec_minmax_conv, &param);
2440}
2441
54b50199
KC		 2442static void validate_coredump_safety(void)
2443{
046d662f 2444#ifdef CONFIG_COREDUMP
e579d2c2 2445 if (suid_dumpable == SUID_DUMP_ROOT &&
54b50199
KC		 2446 core_pattern[0] != '/' && core_pattern[0] != '|') {
2447 printk(KERN_WARNING "Unsafe core_pattern used with "\
2448 "suid_dumpable=2. Pipe handler or fully qualified "\
2449 "core dump path required.\n");
2450 }
046d662f 2451#endif
54b50199
KC		 2452}
2453
2454static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
2455 void __user *buffer, size_t *lenp, loff_t *ppos)
2456{
2457 int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2458 if (!error)
2459 validate_coredump_safety();
2460 return error;
2461}
2462
046d662f 2463#ifdef CONFIG_COREDUMP
54b50199
KC		 2464static int proc_dostring_coredump(struct ctl_table *table, int write,
2465 void __user *buffer, size_t *lenp, loff_t *ppos)
2466{
2467 int error = proc_dostring(table, write, buffer, lenp, ppos);
2468 if (!error)
2469 validate_coredump_safety();
2470 return error;
2471}
046d662f 2472#endif
54b50199 2473
d8217f07 2474static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
1da177e4
LT		 2475 void __user *buffer,
2476 size_t *lenp, loff_t *ppos,
2477 unsigned long convmul,
2478 unsigned long convdiv)
2479{
00b7c339
AW		 2480 unsigned long *i, *min, *max;
2481 int vleft, first = 1, err = 0;
2482 unsigned long page = 0;
2483 size_t left;
2484 char *kbuf;
2485
2486 if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
1da177e4
LT		 2487 *lenp = 0;
2488 return 0;
2489 }
00b7c339 2490
fcfbd547 2491 i = (unsigned long *) data;
1da177e4
LT		 2492 min = (unsigned long *) table->extra1;
2493 max = (unsigned long *) table->extra2;
2494 vleft = table->maxlen / sizeof(unsigned long);
2495 left = *lenp;
00b7c339
AW		 2496
2497 if (write) {
f4aacea2
KC		 2498 if (*ppos) {
2499 switch (sysctl_writes_strict) {
2500 case SYSCTL_WRITES_STRICT:
2501 goto out;
2502 case SYSCTL_WRITES_WARN:
2503 warn_sysctl_write(table);
2504 break;
2505 default:
2506 break;
2507 }
2508 }
2509
00b7c339
AW		 2510 if (left > PAGE_SIZE - 1)
2511 left = PAGE_SIZE - 1;
2512 page = __get_free_page(GFP_TEMPORARY);
2513 kbuf = (char *) page;
2514 if (!kbuf)
2515 return -ENOMEM;
2516 if (copy_from_user(kbuf, buffer, left)) {
2517 err = -EFAULT;
2518 goto free;
2519 }
2520 kbuf[left] = 0;
2521 }
2522
27b3d80a 2523 for (; left && vleft--; i++, first = 0) {
00b7c339
AW		 2524 unsigned long val;
2525
1da177e4 2526 if (write) {
00b7c339
AW		 2527 bool neg;
2528
2529 left -= proc_skip_spaces(&kbuf);
2530
2531 err = proc_get_long(&kbuf, &left, &val, &neg,
2532 proc_wspace_sep,
2533 sizeof(proc_wspace_sep), NULL);
2534 if (err)
1da177e4
LT		 2535 break;
2536 if (neg)
1da177e4 2537 continue;
d1b232c2 2538 val = convmul * val / convdiv;
1da177e4
LT		 2539 if ((min && val < *min) || (max && val > *max))
2540 continue;
2541 *i = val;
2542 } else {
00b7c339 2543 val = convdiv * (*i) / convmul;
7833819d 2544 if (!first) {
00b7c339 2545 err = proc_put_char(&buffer, &left, '\t');
7833819d
CG		 2546 if (err)
2547 break;
2548 }
00b7c339
AW		 2549 err = proc_put_long(&buffer, &left, val, false);
2550 if (err)
2551 break;
1da177e4
LT		 2552 }
2553 }
2554
00b7c339
AW		 2555 if (!write && !first && left && !err)
2556 err = proc_put_char(&buffer, &left, '\n');
2557 if (write && !err)
2558 left -= proc_skip_spaces(&kbuf);
2559free:
1da177e4 2560 if (write) {
00b7c339
AW		 2561 free_page(page);
2562 if (first)
2563 return err ? : -EINVAL;
1da177e4 2564 }
1da177e4 2565 *lenp -= left;
f4aacea2 2566out:
1da177e4 2567 *ppos += *lenp;
00b7c339 2568 return err;
1da177e4
LT		 2569}
2570
d8217f07 2571static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
fcfbd547
KK		 2572 void __user *buffer,
2573 size_t *lenp, loff_t *ppos,
2574 unsigned long convmul,
2575 unsigned long convdiv)
2576{
2577 return __do_proc_doulongvec_minmax(table->data, table, write,
8d65af78 2578 buffer, lenp, ppos, convmul, convdiv);
fcfbd547
KK		 2579}
2580
1da177e4
LT		 2581/**
2582 * proc_doulongvec_minmax - read a vector of long integers with min/max values
2583 * @table: the sysctl table
2584 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2585 * @buffer: the user buffer
2586 * @lenp: the size of the user buffer
2587 * @ppos: file position
2588 *
2589 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2590 * values from/to the user buffer, treated as an ASCII string.
2591 *
2592 * This routine will ensure the values are within the range specified by
2593 * table->extra1 (min) and table->extra2 (max).
2594 *
2595 * Returns 0 on success.
2596 */
8d65af78 2597int proc_doulongvec_minmax(struct ctl_table *table, int write,
1da177e4
LT		 2598 void __user *buffer, size_t *lenp, loff_t *ppos)
2599{
8d65af78 2600 return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l);
1da177e4
LT		 2601}
2602
2603/**
2604 * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values
2605 * @table: the sysctl table
2606 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2607 * @buffer: the user buffer
2608 * @lenp: the size of the user buffer
2609 * @ppos: file position
2610 *
2611 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2612 * values from/to the user buffer, treated as an ASCII string. The values
2613 * are treated as milliseconds, and converted to jiffies when they are stored.
2614 *
2615 * This routine will ensure the values are within the range specified by
2616 * table->extra1 (min) and table->extra2 (max).
2617 *
2618 * Returns 0 on success.
2619 */
d8217f07 2620int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
1da177e4
LT		 2621 void __user *buffer,
2622 size_t *lenp, loff_t *ppos)
2623{
8d65af78 2624 return do_proc_doulongvec_minmax(table, write, buffer,
1da177e4
LT		 2625 lenp, ppos, HZ, 1000l);
2626}
2627
2628
00b7c339 2629static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp,
1da177e4
LT		 2630 int *valp,
2631 int write, void *data)
2632{
2633 if (write) {
cba9f33d
BS		 2634 if (*lvalp > LONG_MAX / HZ)
2635 return 1;
1da177e4
LT		 2636 *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ);
2637 } else {
2638 int val = *valp;
2639 unsigned long lval;
2640 if (val < 0) {
00b7c339 2641 *negp = true;
9a5bc726 2642 lval = -(unsigned long)val;
1da177e4 2643 } else {
00b7c339 2644 *negp = false;
1da177e4
LT		 2645 lval = (unsigned long)val;
2646 }
2647 *lvalp = lval / HZ;
2648 }
2649 return 0;
2650}
2651
00b7c339 2652static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp,
1da177e4
LT		 2653 int *valp,
2654 int write, void *data)
2655{
2656 if (write) {
cba9f33d
BS		 2657 if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ)
2658 return 1;
1da177e4
LT		 2659 *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp);
2660 } else {
2661 int val = *valp;
2662 unsigned long lval;
2663 if (val < 0) {
00b7c339 2664 *negp = true;
9a5bc726 2665 lval = -(unsigned long)val;
1da177e4 2666 } else {
00b7c339 2667 *negp = false;
1da177e4
LT		 2668 lval = (unsigned long)val;
2669 }
2670 *lvalp = jiffies_to_clock_t(lval);
2671 }
2672 return 0;
2673}
2674
00b7c339 2675static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp,
1da177e4
LT		 2676 int *valp,
2677 int write, void *data)
2678{
2679 if (write) {
d738ce8f
FF		 2680 unsigned long jif = msecs_to_jiffies(*negp ? -*lvalp : *lvalp);
2681
2682 if (jif > INT_MAX)
2683 return 1;
2684 *valp = (int)jif;
1da177e4
LT		 2685 } else {
2686 int val = *valp;
2687 unsigned long lval;
2688 if (val < 0) {
00b7c339 2689 *negp = true;
9a5bc726 2690 lval = -(unsigned long)val;
1da177e4 2691 } else {
00b7c339 2692 *negp = false;
1da177e4
LT		 2693 lval = (unsigned long)val;
2694 }
2695 *lvalp = jiffies_to_msecs(lval);
2696 }
2697 return 0;
2698}
2699
2700/**
2701 * proc_dointvec_jiffies - read a vector of integers as seconds
2702 * @table: the sysctl table
2703 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2704 * @buffer: the user buffer
2705 * @lenp: the size of the user buffer
2706 * @ppos: file position
2707 *
2708 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2709 * values from/to the user buffer, treated as an ASCII string.
2710 * The values read are assumed to be in seconds, and are converted into
2711 * jiffies.
2712 *
2713 * Returns 0 on success.
2714 */
8d65af78 2715int proc_dointvec_jiffies(struct ctl_table *table, int write,
1da177e4
LT		 2716 void __user *buffer, size_t *lenp, loff_t *ppos)
2717{
8d65af78 2718 return do_proc_dointvec(table,write,buffer,lenp,ppos,
1da177e4
LT		 2719 do_proc_dointvec_jiffies_conv,NULL);
2720}
2721
2722/**
2723 * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds
2724 * @table: the sysctl table
2725 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2726 * @buffer: the user buffer
2727 * @lenp: the size of the user buffer
1e5d5331 2728 * @ppos: pointer to the file position
1da177e4
LT		 2729 *
2730 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2731 * values from/to the user buffer, treated as an ASCII string.
2732 * The values read are assumed to be in 1/USER_HZ seconds, and
2733 * are converted into jiffies.
2734 *
2735 * Returns 0 on success.
2736 */
8d65af78 2737int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
1da177e4
LT		 2738 void __user *buffer, size_t *lenp, loff_t *ppos)
2739{
8d65af78 2740 return do_proc_dointvec(table,write,buffer,lenp,ppos,
1da177e4
LT		 2741 do_proc_dointvec_userhz_jiffies_conv,NULL);
2742}
2743
2744/**
2745 * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds
2746 * @table: the sysctl table
2747 * @write: %TRUE if this is a write to the sysctl file
1da177e4
LT		 2748 * @buffer: the user buffer
2749 * @lenp: the size of the user buffer
67be2dd1
MW		 2750 * @ppos: file position
2751 * @ppos: the current position in the file
1da177e4
LT		 2752 *
2753 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2754 * values from/to the user buffer, treated as an ASCII string.
2755 * The values read are assumed to be in 1/1000 seconds, and
2756 * are converted into jiffies.
2757 *
2758 * Returns 0 on success.
2759 */
8d65af78 2760int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
1da177e4
LT		 2761 void __user *buffer, size_t *lenp, loff_t *ppos)
2762{
8d65af78 2763 return do_proc_dointvec(table, write, buffer, lenp, ppos,
1da177e4
LT		 2764 do_proc_dointvec_ms_jiffies_conv, NULL);
2765}
2766
8d65af78 2767static int proc_do_cad_pid(struct ctl_table *table, int write,
9ec52099
CLG		 2768 void __user *buffer, size_t *lenp, loff_t *ppos)
2769{
2770 struct pid *new_pid;
2771 pid_t tmp;
2772 int r;
2773
6c5f3e7b 2774 tmp = pid_vnr(cad_pid);
9ec52099 2775
8d65af78 2776 r = __do_proc_dointvec(&tmp, table, write, buffer,
9ec52099
CLG		 2777 lenp, ppos, NULL, NULL);
2778 if (r || !write)
2779 return r;
2780
2781 new_pid = find_get_pid(tmp);
2782 if (!new_pid)
2783 return -ESRCH;
2784
2785 put_pid(xchg(&cad_pid, new_pid));
2786 return 0;
2787}
2788
9f977fb7
OP		 2789/**
2790 * proc_do_large_bitmap - read/write from/to a large bitmap
2791 * @table: the sysctl table
2792 * @write: %TRUE if this is a write to the sysctl file
2793 * @buffer: the user buffer
2794 * @lenp: the size of the user buffer
2795 * @ppos: file position
2796 *
2797 * The bitmap is stored at table->data and the bitmap length (in bits)
2798 * in table->maxlen.
2799 *
2800 * We use a range comma separated format (e.g. 1,3-4,10-10) so that
2801 * large bitmaps may be represented in a compact manner. Writing into
2802 * the file will clear the bitmap then update it with the given input.
2803 *
2804 * Returns 0 on success.
2805 */
2806int proc_do_large_bitmap(struct ctl_table *table, int write,
2807 void __user *buffer, size_t *lenp, loff_t *ppos)
2808{
2809 int err = 0;
2810 bool first = 1;
2811 size_t left = *lenp;
2812 unsigned long bitmap_len = table->maxlen;
122ff243 2813 unsigned long *bitmap = *(unsigned long **) table->data;
9f977fb7
OP		 2814 unsigned long *tmp_bitmap = NULL;
2815 char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c;
2816
122ff243 2817 if (!bitmap || !bitmap_len || !left || (*ppos && !write)) {
9f977fb7
OP		 2818 *lenp = 0;
2819 return 0;
2820 }
2821
2822 if (write) {
2823 unsigned long page = 0;
2824 char *kbuf;
2825
2826 if (left > PAGE_SIZE - 1)
2827 left = PAGE_SIZE - 1;
2828
2829 page = __get_free_page(GFP_TEMPORARY);
2830 kbuf = (char *) page;
2831 if (!kbuf)
2832 return -ENOMEM;
2833 if (copy_from_user(kbuf, buffer, left)) {
2834 free_page(page);
2835 return -EFAULT;
2836 }
2837 kbuf[left] = 0;
2838
2839 tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long),
2840 GFP_KERNEL);
2841 if (!tmp_bitmap) {
2842 free_page(page);
2843 return -ENOMEM;
2844 }
2845 proc_skip_char(&kbuf, &left, '\n');
2846 while (!err && left) {
2847 unsigned long val_a, val_b;
2848 bool neg;
2849
2850 err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a,
2851 sizeof(tr_a), &c);
2852 if (err)
2853 break;
2854 if (val_a >= bitmap_len || neg) {
2855 err = -EINVAL;
2856 break;
2857 }
2858
2859 val_b = val_a;
2860 if (left) {
2861 kbuf++;
2862 left--;
2863 }
2864
2865 if (c == '-') {
2866 err = proc_get_long(&kbuf, &left, &val_b,
2867 &neg, tr_b, sizeof(tr_b),
2868 &c);
2869 if (err)
2870 break;
2871 if (val_b >= bitmap_len || neg ||
2872 val_a > val_b) {
2873 err = -EINVAL;
2874 break;
2875 }
2876 if (left) {
2877 kbuf++;
2878 left--;
2879 }
2880 }
2881
5a04cca6 2882 bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1);
9f977fb7
OP		 2883 first = 0;
2884 proc_skip_char(&kbuf, &left, '\n');
2885 }
2886 free_page(page);
2887 } else {
2888 unsigned long bit_a, bit_b = 0;
2889
2890 while (left) {
2891 bit_a = find_next_bit(bitmap, bitmap_len, bit_b);
2892 if (bit_a >= bitmap_len)
2893 break;
2894 bit_b = find_next_zero_bit(bitmap, bitmap_len,
2895 bit_a + 1) - 1;
2896
2897 if (!first) {
2898 err = proc_put_char(&buffer, &left, ',');
2899 if (err)
2900 break;
2901 }
2902 err = proc_put_long(&buffer, &left, bit_a, false);
2903 if (err)
2904 break;
2905 if (bit_a != bit_b) {
2906 err = proc_put_char(&buffer, &left, '-');
2907 if (err)
2908 break;
2909 err = proc_put_long(&buffer, &left, bit_b, false);
2910 if (err)
2911 break;
2912 }
2913
2914 first = 0; bit_b++;
2915 }
2916 if (!err)
2917 err = proc_put_char(&buffer, &left, '\n');
2918 }
2919
2920 if (!err) {
2921 if (write) {
2922 if (*ppos)
2923 bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len);
2924 else
5a04cca6 2925 bitmap_copy(bitmap, tmp_bitmap, bitmap_len);
9f977fb7
OP		 2926 }
2927 kfree(tmp_bitmap);
2928 *lenp -= left;
2929 *ppos += *lenp;
2930 return 0;
2931 } else {
2932 kfree(tmp_bitmap);
2933 return err;
2934 }
2935}
2936
55610500 2937#else /* CONFIG_PROC_SYSCTL */
1da177e4 2938
8d65af78 2939int proc_dostring(struct ctl_table *table, int write,
1da177e4
LT		 2940 void __user *buffer, size_t *lenp, loff_t *ppos)
2941{
2942 return -ENOSYS;
2943}
2944
8d65af78 2945int proc_dointvec(struct ctl_table *table, int write,
1da177e4 2946 void __user *buffer, size_t *lenp, loff_t *ppos)
1da177e4
LT		 2947{
2948 return -ENOSYS;
2949}
2950
70cd763e
SAK		 2951int proc_douintvec(struct ctl_table *table, int write,
2952 void __user *buffer, size_t *lenp, loff_t *ppos)
2953{
2954 return -ENOSYS;
2955}
2956
8d65af78 2957int proc_dointvec_minmax(struct ctl_table *table, int write,
1da177e4
LT		 2958 void __user *buffer, size_t *lenp, loff_t *ppos)
2959{
2960 return -ENOSYS;
2961}
2962
8d65af78 2963int proc_dointvec_jiffies(struct ctl_table *table, int write,
1da177e4
LT		 2964 void __user *buffer, size_t *lenp, loff_t *ppos)
2965{
2966 return -ENOSYS;
2967}
2968
8d65af78 2969int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
1da177e4
LT		 2970 void __user *buffer, size_t *lenp, loff_t *ppos)
2971{
2972 return -ENOSYS;
2973}
2974
8d65af78 2975int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
1da177e4
LT		 2976 void __user *buffer, size_t *lenp, loff_t *ppos)
2977{
2978 return -ENOSYS;
2979}
2980
8d65af78 2981int proc_doulongvec_minmax(struct ctl_table *table, int write,
1da177e4
LT		 2982 void __user *buffer, size_t *lenp, loff_t *ppos)
2983{
2984 return -ENOSYS;
2985}
2986
d8217f07 2987int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
1da177e4
LT		 2988 void __user *buffer,
2989 size_t *lenp, loff_t *ppos)
2990{
2991 return -ENOSYS;
2992}
2993
2994
55610500 2995#endif /* CONFIG_PROC_SYSCTL */
1da177e4 2996
1da177e4
LT		 2997/*
2998 * No sense putting this after each symbol definition, twice,
2999 * exception granted :-)
3000 */
3001EXPORT_SYMBOL(proc_dointvec);
70cd763e 3002EXPORT_SYMBOL(proc_douintvec);
1da177e4
LT		 3003EXPORT_SYMBOL(proc_dointvec_jiffies);
3004EXPORT_SYMBOL(proc_dointvec_minmax);
3005EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
3006EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
3007EXPORT_SYMBOL(proc_dostring);
3008EXPORT_SYMBOL(proc_doulongvec_minmax);
3009EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);