Blame view
kernel/sysctl.c
62.6 KB
1da177e4c
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
/* * sysctl.c: General linux system control interface * * Begun 24 March 1995, Stephen Tweedie * Added /proc support, Dec 1995 * Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas. * Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver. * Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver. * Dynamic registration fixes, Stephen Tweedie. * Added kswapd-interval, ctrl-alt-del, printk stuff, 1/8/97, Chris Horn. * Made sysctl support optional via CONFIG_SYSCTL, 1/10/97, Chris * Horn. * Added proc_doulongvec_ms_jiffies_minmax, 09/08/99, Carlos H. Bauer. * Added proc_doulongvec_minmax, 09/08/99, Carlos H. Bauer. * Changed linked lists to use list.h instead of lists.h, 02/24/00, Bill * Wendling. * The list_for_each() macro wasn't appropriate for the sysctl loop. * Removed it and replaced it with older style, 03/23/00, Bill Wendling */ |
1da177e4c
|
20 21 22 23 24 |
#include <linux/module.h> #include <linux/mm.h> #include <linux/swap.h> #include <linux/slab.h> #include <linux/sysctl.h> |
5a04cca6c
|
25 |
#include <linux/bitmap.h> |
d33ed52d5
|
26 |
#include <linux/signal.h> |
455cd5ab3
|
27 |
#include <linux/printk.h> |
1da177e4c
|
28 |
#include <linux/proc_fs.h> |
72c2d5823
|
29 |
#include <linux/security.h> |
1da177e4c
|
30 |
#include <linux/ctype.h> |
dfec072ec
|
31 |
#include <linux/kmemcheck.h> |
fd4b616b0
|
32 |
#include <linux/kmemleak.h> |
62239ac2b
|
33 |
#include <linux/fs.h> |
1da177e4c
|
34 35 |
#include <linux/init.h> #include <linux/kernel.h> |
0296b2281
|
36 |
#include <linux/kobject.h> |
20380731b
|
37 |
#include <linux/net.h> |
1da177e4c
|
38 39 40 |
#include <linux/sysrq.h> #include <linux/highuid.h> #include <linux/writeback.h> |
3fff4c42b
|
41 |
#include <linux/ratelimit.h> |
76ab0f530
|
42 |
#include <linux/compaction.h> |
1da177e4c
|
43 |
#include <linux/hugetlb.h> |
1da177e4c
|
44 |
#include <linux/initrd.h> |
0b77f5bfb
|
45 |
#include <linux/key.h> |
1da177e4c
|
46 47 48 |
#include <linux/times.h> #include <linux/limits.h> #include <linux/dcache.h> |
6e006701c
|
49 |
#include <linux/dnotify.h> |
1da177e4c
|
50 |
#include <linux/syscalls.h> |
c748e1340
|
51 |
#include <linux/vmstat.h> |
c255d844d
|
52 53 |
#include <linux/nfs_fs.h> #include <linux/acpi.h> |
10a0a8d4e
|
54 |
#include <linux/reboot.h> |
b0fc494fa
|
55 |
#include <linux/ftrace.h> |
cdd6c482c
|
56 |
#include <linux/perf_event.h> |
b2be84df9
|
57 |
#include <linux/kprobes.h> |
b492e95be
|
58 |
#include <linux/pipe_fs_i.h> |
8e4228e1e
|
59 |
#include <linux/oom.h> |
17f60a7da
|
60 |
#include <linux/kmod.h> |
73efc0394
|
61 |
#include <linux/capability.h> |
404015308
|
62 |
#include <linux/binfmts.h> |
cf4aebc29
|
63 |
#include <linux/sched/sysctl.h> |
7984754b9
|
64 |
#include <linux/kexec.h> |
1da177e4c
|
65 66 67 |
#include <asm/uaccess.h> #include <asm/processor.h> |
29cbc78b9
|
68 69 |
#ifdef CONFIG_X86 #include <asm/nmi.h> |
0741f4d20
|
70 |
#include <asm/stacktrace.h> |
6e7c40259
|
71 |
#include <asm/io.h> |
29cbc78b9
|
72 |
#endif |
d550bbd40
|
73 74 75 |
#ifdef CONFIG_SPARC #include <asm/setup.h> #endif |
c55b7c3e8
|
76 77 78 |
#ifdef CONFIG_BSD_PROCESS_ACCT #include <linux/acct.h> #endif |
4f0e056fd
|
79 80 81 |
#ifdef CONFIG_RT_MUTEXES #include <linux/rtmutex.h> #endif |
2edf5e498
|
82 83 84 |
#if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT) #include <linux/lockdep.h> #endif |
15485a468
|
85 86 87 |
#ifdef CONFIG_CHR_DEV_SG #include <scsi/sg.h> #endif |
29cbc78b9
|
88 |
|
58687acba
|
89 |
#ifdef CONFIG_LOCKUP_DETECTOR |
504d7cf10
|
90 91 |
#include <linux/nmi.h> #endif |
7058cb02d
|
92 |
|
1da177e4c
|
93 94 95 |
#if defined(CONFIG_SYSCTL) /* External variables not in a header file. */ |
1da177e4c
|
96 |
extern int max_threads; |
d6e711448
|
97 |
extern int suid_dumpable; |
046d662f4
|
98 99 |
#ifdef CONFIG_COREDUMP extern int core_uses_pid; |
1da177e4c
|
100 |
extern char core_pattern[]; |
a293980c2
|
101 |
extern unsigned int core_pipe_limit; |
046d662f4
|
102 |
#endif |
1da177e4c
|
103 |
extern int pid_max; |
1da177e4c
|
104 |
extern int pid_max_min, pid_max_max; |
8ad4b1fb8
|
105 |
extern int percpu_pagelist_fraction; |
bebfa1013
|
106 |
extern int compat_log; |
9745512ce
|
107 |
extern int latencytop_enabled; |
eceea0b3d
|
108 |
extern int sysctl_nr_open_min, sysctl_nr_open_max; |
dd8632a12
|
109 110 111 |
#ifndef CONFIG_MMU extern int sysctl_nr_trim_pages; #endif |
1da177e4c
|
112 |
|
c4f3b63fe
|
113 |
/* Constants used for minimum and maximum */ |
2508ce184
|
114 |
#ifdef CONFIG_LOCKUP_DETECTOR |
c4f3b63fe
|
115 116 |
static int sixty = 60; #endif |
270750dbc
|
117 |
static int __maybe_unused neg_one = -1; |
c4f3b63fe
|
118 |
static int zero; |
cd5f9a4c3
|
119 120 |
static int __maybe_unused one = 1; static int __maybe_unused two = 2; |
5509a5d27
|
121 |
static int __maybe_unused four = 4; |
fc3501d41
|
122 |
static unsigned long one_ul = 1; |
c4f3b63fe
|
123 |
static int one_hundred = 100; |
af91322ef
|
124 125 126 |
#ifdef CONFIG_PRINTK static int ten_thousand = 10000; #endif |
c4f3b63fe
|
127 |
|
9e4a5bda8
|
128 129 |
/* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */ static unsigned long dirty_bytes_min = 2 * PAGE_SIZE; |
1da177e4c
|
130 131 132 133 134 |
/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */ static int maxolduid = 65535; static int minolduid; static int ngroups_max = NGROUPS_MAX; |
73efc0394
|
135 |
static const int cap_last_cap = CAP_LAST_CAP; |
1da177e4c
|
136 |
|
80df28476
|
137 138 139 140 |
/*this is needed for proc_doulongvec_minmax of sysctl_hung_task_timeout_secs */ #ifdef CONFIG_DETECT_HUNG_TASK static unsigned long hung_task_timeout_max = (LONG_MAX/HZ); #endif |
d14f17294
|
141 142 143 |
#ifdef CONFIG_INOTIFY_USER #include <linux/inotify.h> #endif |
72c57ed50
|
144 |
#ifdef CONFIG_SPARC |
1da177e4c
|
145 146 147 148 |
#endif #ifdef __hppa__ extern int pwrsw_enabled; |
bf14e3b97
|
149 150 151 |
#endif #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW |
1da177e4c
|
152 153 |
extern int unaligned_enabled; #endif |
1da177e4c
|
154 |
|
d2b176ed8
|
155 |
#ifdef CONFIG_IA64 |
88fc241f5
|
156 |
extern int unaligned_dump_stack; |
d2b176ed8
|
157 |
#endif |
b6fca7253
|
158 159 160 |
#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN extern int no_unaligned_warning; #endif |
d6f8ff738
|
161 |
#ifdef CONFIG_PROC_SYSCTL |
f4aacea2f
|
162 163 164 165 166 167 |
#define SYSCTL_WRITES_LEGACY -1 #define SYSCTL_WRITES_WARN 0 #define SYSCTL_WRITES_STRICT 1 static int sysctl_writes_strict = SYSCTL_WRITES_WARN; |
8d65af789
|
168 |
static int proc_do_cad_pid(struct ctl_table *table, int write, |
9ec52099e
|
169 |
void __user *buffer, size_t *lenp, loff_t *ppos); |
8d65af789
|
170 |
static int proc_taint(struct ctl_table *table, int write, |
34f5a3989
|
171 |
void __user *buffer, size_t *lenp, loff_t *ppos); |
d6f8ff738
|
172 |
#endif |
9ec52099e
|
173 |
|
bfdc0b497
|
174 |
#ifdef CONFIG_PRINTK |
620f6e8e8
|
175 |
static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
bfdc0b497
|
176 177 |
void __user *buffer, size_t *lenp, loff_t *ppos); #endif |
54b501992
|
178 179 |
static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); |
046d662f4
|
180 |
#ifdef CONFIG_COREDUMP |
54b501992
|
181 182 |
static int proc_dostring_coredump(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos); |
046d662f4
|
183 |
#endif |
54b501992
|
184 |
|
97f5f0cd8
|
185 |
#ifdef CONFIG_MAGIC_SYSRQ |
8c6a98b22
|
186 |
/* Note: sysrq code uses it's own private copy */ |
8eaede49d
|
187 |
static int __sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE; |
97f5f0cd8
|
188 |
|
6f8fd1d77
|
189 |
static int sysrq_sysctl_handler(struct ctl_table *table, int write, |
97f5f0cd8
|
190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 |
void __user *buffer, size_t *lenp, loff_t *ppos) { int error; error = proc_dointvec(table, write, buffer, lenp, ppos); if (error) return error; if (write) sysrq_toggle_support(__sysrq_enabled); return 0; } #endif |
d8217f076
|
206 207 208 209 210 211 |
static struct ctl_table kern_table[]; static struct ctl_table vm_table[]; static struct ctl_table fs_table[]; static struct ctl_table debug_table[]; static struct ctl_table dev_table[]; extern struct ctl_table random_table[]; |
7ef9964e6
|
212 213 214 |
#ifdef CONFIG_EPOLL extern struct ctl_table epoll_table[]; #endif |
1da177e4c
|
215 216 217 218 |
#ifdef HAVE_ARCH_PICK_MMAP_LAYOUT int sysctl_legacy_va_layout; #endif |
1da177e4c
|
219 |
/* The default sysctl tables: */ |
de4e83bd6
|
220 |
static struct ctl_table sysctl_base_table[] = { |
1da177e4c
|
221 |
{ |
1da177e4c
|
222 223 224 225 226 |
.procname = "kernel", .mode = 0555, .child = kern_table, }, { |
1da177e4c
|
227 228 229 230 |
.procname = "vm", .mode = 0555, .child = vm_table, }, |
1da177e4c
|
231 |
{ |
1da177e4c
|
232 233 234 235 236 |
.procname = "fs", .mode = 0555, .child = fs_table, }, { |
1da177e4c
|
237 238 239 240 241 |
.procname = "debug", .mode = 0555, .child = debug_table, }, { |
1da177e4c
|
242 243 244 245 |
.procname = "dev", .mode = 0555, .child = dev_table, }, |
6fce56ec9
|
246 |
{ } |
1da177e4c
|
247 |
}; |
77e54a1f8
|
248 |
#ifdef CONFIG_SCHED_DEBUG |
73c4efd2c
|
249 250 251 252 |
static int min_sched_granularity_ns = 100000; /* 100 usecs */ static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */ static int min_wakeup_granularity_ns; /* 0 usecs */ static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */ |
cbee9f88e
|
253 |
#ifdef CONFIG_SMP |
1983a922a
|
254 255 |
static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE; static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1; |
cbee9f88e
|
256 257 |
#endif /* CONFIG_SMP */ #endif /* CONFIG_SCHED_DEBUG */ |
77e54a1f8
|
258 |
|
5e7719058
|
259 260 261 262 |
#ifdef CONFIG_COMPACTION static int min_extfrag_threshold; static int max_extfrag_threshold = 1000; #endif |
d8217f076
|
263 |
static struct ctl_table kern_table[] = { |
2bba22c50
|
264 |
{ |
2bba22c50
|
265 266 267 268 |
.procname = "sched_child_runs_first", .data = &sysctl_sched_child_runs_first, .maxlen = sizeof(unsigned int), .mode = 0644, |
6d4561110
|
269 |
.proc_handler = proc_dointvec, |
2bba22c50
|
270 |
}, |
77e54a1f8
|
271 272 |
#ifdef CONFIG_SCHED_DEBUG { |
b2be5e96d
|
273 274 |
.procname = "sched_min_granularity_ns", .data = &sysctl_sched_min_granularity, |
77e54a1f8
|
275 276 |
.maxlen = sizeof(unsigned int), .mode = 0644, |
702a7c760
|
277 |
.proc_handler = sched_proc_update_handler, |
b2be5e96d
|
278 279 |
.extra1 = &min_sched_granularity_ns, .extra2 = &max_sched_granularity_ns, |
77e54a1f8
|
280 281 |
}, { |
218050855
|
282 283 284 285 |
.procname = "sched_latency_ns", .data = &sysctl_sched_latency, .maxlen = sizeof(unsigned int), .mode = 0644, |
702a7c760
|
286 |
.proc_handler = sched_proc_update_handler, |
218050855
|
287 288 289 290 |
.extra1 = &min_sched_granularity_ns, .extra2 = &max_sched_granularity_ns, }, { |
77e54a1f8
|
291 292 293 294 |
.procname = "sched_wakeup_granularity_ns", .data = &sysctl_sched_wakeup_granularity, .maxlen = sizeof(unsigned int), .mode = 0644, |
702a7c760
|
295 |
.proc_handler = sched_proc_update_handler, |
77e54a1f8
|
296 297 298 |
.extra1 = &min_wakeup_granularity_ns, .extra2 = &max_wakeup_granularity_ns, }, |
cbee9f88e
|
299 |
#ifdef CONFIG_SMP |
77e54a1f8
|
300 |
{ |
1983a922a
|
301 302 303 304 |
.procname = "sched_tunable_scaling", .data = &sysctl_sched_tunable_scaling, .maxlen = sizeof(enum sched_tunable_scaling), .mode = 0644, |
702a7c760
|
305 |
.proc_handler = sched_proc_update_handler, |
1983a922a
|
306 307 |
.extra1 = &min_sched_tunable_scaling, .extra2 = &max_sched_tunable_scaling, |
2398f2c6d
|
308 309 |
}, { |
d00535db4
|
310 |
.procname = "sched_migration_cost_ns", |
da84d9617
|
311 312 313 |
.data = &sysctl_sched_migration_cost, .maxlen = sizeof(unsigned int), .mode = 0644, |
6d4561110
|
314 |
.proc_handler = proc_dointvec, |
da84d9617
|
315 |
}, |
b82d9fdd8
|
316 |
{ |
b82d9fdd8
|
317 318 319 |
.procname = "sched_nr_migrate", .data = &sysctl_sched_nr_migrate, .maxlen = sizeof(unsigned int), |
fa85ae241
|
320 |
.mode = 0644, |
6d4561110
|
321 |
.proc_handler = proc_dointvec, |
fa85ae241
|
322 |
}, |
cd1bb94b4
|
323 |
{ |
d00535db4
|
324 |
.procname = "sched_time_avg_ms", |
e9e9250bc
|
325 326 327 |
.data = &sysctl_sched_time_avg, .maxlen = sizeof(unsigned int), .mode = 0644, |
6d4561110
|
328 |
.proc_handler = proc_dointvec, |
e9e9250bc
|
329 330 |
}, { |
d00535db4
|
331 |
.procname = "sched_shares_window_ns", |
a7a4f8a75
|
332 333 334 335 336 337 |
.data = &sysctl_sched_shares_window, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec, }, { |
cd1bb94b4
|
338 339 340 341 |
.procname = "timer_migration", .data = &sysctl_timer_migration, .maxlen = sizeof(unsigned int), .mode = 0644, |
6d4561110
|
342 |
.proc_handler = proc_dointvec_minmax, |
bfdb4d9f0
|
343 344 |
.extra1 = &zero, .extra2 = &one, |
fa85ae241
|
345 |
}, |
cbee9f88e
|
346 347 348 |
#endif /* CONFIG_SMP */ #ifdef CONFIG_NUMA_BALANCING { |
4b96a29ba
|
349 350 351 352 353 354 355 |
.procname = "numa_balancing_scan_delay_ms", .data = &sysctl_numa_balancing_scan_delay, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec, }, { |
cbee9f88e
|
356 357 358 359 360 361 362 363 364 365 366 367 368 |
.procname = "numa_balancing_scan_period_min_ms", .data = &sysctl_numa_balancing_scan_period_min, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec, }, { .procname = "numa_balancing_scan_period_max_ms", .data = &sysctl_numa_balancing_scan_period_max, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec, }, |
6e5fb223e
|
369 370 371 372 373 |
{ .procname = "numa_balancing_scan_size_mb", .data = &sysctl_numa_balancing_scan_size, .maxlen = sizeof(unsigned int), .mode = 0644, |
641926589
|
374 375 |
.proc_handler = proc_dointvec_minmax, .extra1 = &one, |
6e5fb223e
|
376 |
}, |
3a7053b32
|
377 |
{ |
54a43d549
|
378 379 380 381 382 383 384 385 |
.procname = "numa_balancing", .data = NULL, /* filled in by handler */ .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = sysctl_numa_balancing, .extra1 = &zero, .extra2 = &one, }, |
cbee9f88e
|
386 387 |
#endif /* CONFIG_NUMA_BALANCING */ #endif /* CONFIG_SCHED_DEBUG */ |
1799e35d5
|
388 |
{ |
9f0c1e560
|
389 390 391 392 |
.procname = "sched_rt_period_us", .data = &sysctl_sched_rt_period, .maxlen = sizeof(unsigned int), .mode = 0644, |
6d4561110
|
393 |
.proc_handler = sched_rt_handler, |
9f0c1e560
|
394 395 |
}, { |
9f0c1e560
|
396 397 398 399 |
.procname = "sched_rt_runtime_us", .data = &sysctl_sched_rt_runtime, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
400 |
.proc_handler = sched_rt_handler, |
9f0c1e560
|
401 |
}, |
ce0dbbbb3
|
402 403 404 405 406 407 408 |
{ .procname = "sched_rr_timeslice_ms", .data = &sched_rr_timeslice, .maxlen = sizeof(int), .mode = 0644, .proc_handler = sched_rr_handler, }, |
5091faa44
|
409 410 411 412 413 414 |
#ifdef CONFIG_SCHED_AUTOGROUP { .procname = "sched_autogroup_enabled", .data = &sysctl_sched_autogroup_enabled, .maxlen = sizeof(unsigned int), .mode = 0644, |
1747b21fe
|
415 |
.proc_handler = proc_dointvec_minmax, |
5091faa44
|
416 417 418 419 |
.extra1 = &zero, .extra2 = &one, }, #endif |
ec12cb7f3
|
420 421 422 423 424 425 426 427 428 429 |
#ifdef CONFIG_CFS_BANDWIDTH { .procname = "sched_cfs_bandwidth_slice_us", .data = &sysctl_sched_cfs_bandwidth_slice, .maxlen = sizeof(unsigned int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = &one, }, #endif |
f20786ff4
|
430 431 |
#ifdef CONFIG_PROVE_LOCKING { |
f20786ff4
|
432 433 434 435 |
.procname = "prove_locking", .data = &prove_locking, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
436 |
.proc_handler = proc_dointvec, |
f20786ff4
|
437 438 439 440 |
}, #endif #ifdef CONFIG_LOCK_STAT { |
f20786ff4
|
441 442 443 444 |
.procname = "lock_stat", .data = &lock_stat, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
445 |
.proc_handler = proc_dointvec, |
f20786ff4
|
446 447 |
}, #endif |
77e54a1f8
|
448 |
{ |
1da177e4c
|
449 450 451 452 |
.procname = "panic", .data = &panic_timeout, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
453 |
.proc_handler = proc_dointvec, |
1da177e4c
|
454 |
}, |
046d662f4
|
455 |
#ifdef CONFIG_COREDUMP |
1da177e4c
|
456 |
{ |
1da177e4c
|
457 458 459 460 |
.procname = "core_uses_pid", .data = &core_uses_pid, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
461 |
.proc_handler = proc_dointvec, |
1da177e4c
|
462 463 |
}, { |
1da177e4c
|
464 465 |
.procname = "core_pattern", .data = core_pattern, |
71ce92f3f
|
466 |
.maxlen = CORENAME_MAX_SIZE, |
1da177e4c
|
467 |
.mode = 0644, |
54b501992
|
468 |
.proc_handler = proc_dostring_coredump, |
1da177e4c
|
469 |
}, |
a293980c2
|
470 |
{ |
a293980c2
|
471 472 473 474 |
.procname = "core_pipe_limit", .data = &core_pipe_limit, .maxlen = sizeof(unsigned int), .mode = 0644, |
6d4561110
|
475 |
.proc_handler = proc_dointvec, |
a293980c2
|
476 |
}, |
046d662f4
|
477 |
#endif |
34f5a3989
|
478 |
#ifdef CONFIG_PROC_SYSCTL |
1da177e4c
|
479 |
{ |
1da177e4c
|
480 |
.procname = "tainted", |
25ddbb18a
|
481 |
.maxlen = sizeof(long), |
34f5a3989
|
482 |
.mode = 0644, |
6d4561110
|
483 |
.proc_handler = proc_taint, |
1da177e4c
|
484 |
}, |
f4aacea2f
|
485 486 487 488 489 490 491 492 493 |
{ .procname = "sysctl_writes_strict", .data = &sysctl_writes_strict, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = &neg_one, .extra2 = &one, }, |
34f5a3989
|
494 |
#endif |
9745512ce
|
495 496 497 498 499 500 |
#ifdef CONFIG_LATENCYTOP { .procname = "latencytop", .data = &latencytop_enabled, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
501 |
.proc_handler = proc_dointvec, |
9745512ce
|
502 503 |
}, #endif |
1da177e4c
|
504 505 |
#ifdef CONFIG_BLK_DEV_INITRD { |
1da177e4c
|
506 507 508 509 |
.procname = "real-root-dev", .data = &real_root_dev, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
510 |
.proc_handler = proc_dointvec, |
1da177e4c
|
511 512 |
}, #endif |
45807a1df
|
513 |
{ |
45807a1df
|
514 515 516 517 |
.procname = "print-fatal-signals", .data = &print_fatal_signals, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
518 |
.proc_handler = proc_dointvec, |
45807a1df
|
519 |
}, |
72c57ed50
|
520 |
#ifdef CONFIG_SPARC |
1da177e4c
|
521 |
{ |
1da177e4c
|
522 523 524 525 |
.procname = "reboot-cmd", .data = reboot_command, .maxlen = 256, .mode = 0644, |
6d4561110
|
526 |
.proc_handler = proc_dostring, |
1da177e4c
|
527 528 |
}, { |
1da177e4c
|
529 530 531 532 |
.procname = "stop-a", .data = &stop_a_enabled, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
533 |
.proc_handler = proc_dointvec, |
1da177e4c
|
534 535 |
}, { |
1da177e4c
|
536 537 538 539 |
.procname = "scons-poweroff", .data = &scons_pwroff, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
540 |
.proc_handler = proc_dointvec, |
1da177e4c
|
541 542 |
}, #endif |
0871420fa
|
543 544 |
#ifdef CONFIG_SPARC64 { |
0871420fa
|
545 546 547 548 |
.procname = "tsb-ratio", .data = &sysctl_tsb_ratio, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
549 |
.proc_handler = proc_dointvec, |
0871420fa
|
550 551 |
}, #endif |
1da177e4c
|
552 553 |
#ifdef __hppa__ { |
1da177e4c
|
554 555 556 557 |
.procname = "soft-power", .data = &pwrsw_enabled, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
558 |
.proc_handler = proc_dointvec, |
1da177e4c
|
559 |
}, |
bf14e3b97
|
560 561 |
#endif #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW |
1da177e4c
|
562 |
{ |
1da177e4c
|
563 564 565 566 |
.procname = "unaligned-trap", .data = &unaligned_enabled, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
567 |
.proc_handler = proc_dointvec, |
1da177e4c
|
568 569 570 |
}, #endif { |
1da177e4c
|
571 572 573 574 |
.procname = "ctrl-alt-del", .data = &C_A_D, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
575 |
.proc_handler = proc_dointvec, |
1da177e4c
|
576 |
}, |
606576ce8
|
577 |
#ifdef CONFIG_FUNCTION_TRACER |
b0fc494fa
|
578 |
{ |
b0fc494fa
|
579 580 581 582 |
.procname = "ftrace_enabled", .data = &ftrace_enabled, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
583 |
.proc_handler = ftrace_enable_sysctl, |
b0fc494fa
|
584 585 |
}, #endif |
f38f1d2aa
|
586 587 |
#ifdef CONFIG_STACK_TRACER { |
f38f1d2aa
|
588 589 590 591 |
.procname = "stack_tracer_enabled", .data = &stack_tracer_enabled, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
592 |
.proc_handler = stack_trace_sysctl, |
f38f1d2aa
|
593 594 |
}, #endif |
944ac4259
|
595 596 |
#ifdef CONFIG_TRACING { |
3299b4dd1
|
597 |
.procname = "ftrace_dump_on_oops", |
944ac4259
|
598 599 600 |
.data = &ftrace_dump_on_oops, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
601 |
.proc_handler = proc_dointvec, |
944ac4259
|
602 |
}, |
de7edd314
|
603 604 605 606 607 608 609 |
{ .procname = "traceoff_on_warning", .data = &__disable_trace_on_warning, .maxlen = sizeof(__disable_trace_on_warning), .mode = 0644, .proc_handler = proc_dointvec, }, |
0daa23029
|
610 611 612 613 614 615 616 |
{ .procname = "tracepoint_printk", .data = &tracepoint_printk, .maxlen = sizeof(tracepoint_printk), .mode = 0644, .proc_handler = proc_dointvec, }, |
944ac4259
|
617 |
#endif |
7984754b9
|
618 619 620 621 622 623 624 625 626 627 628 629 |
#ifdef CONFIG_KEXEC { .procname = "kexec_load_disabled", .data = &kexec_load_disabled, .maxlen = sizeof(int), .mode = 0644, /* only handle a transition from default "0" to "1" */ .proc_handler = proc_dointvec_minmax, .extra1 = &one, .extra2 = &one, }, #endif |
a1ef5adb4
|
630 |
#ifdef CONFIG_MODULES |
1da177e4c
|
631 |
{ |
1da177e4c
|
632 633 634 635 |
.procname = "modprobe", .data = &modprobe_path, .maxlen = KMOD_PATH_LEN, .mode = 0644, |
6d4561110
|
636 |
.proc_handler = proc_dostring, |
1da177e4c
|
637 |
}, |
3d43321b7
|
638 |
{ |
3d43321b7
|
639 640 641 642 643 |
.procname = "modules_disabled", .data = &modules_disabled, .maxlen = sizeof(int), .mode = 0644, /* only handle a transition from default "0" to "1" */ |
6d4561110
|
644 |
.proc_handler = proc_dointvec_minmax, |
3d43321b7
|
645 646 647 |
.extra1 = &one, .extra2 = &one, }, |
1da177e4c
|
648 |
#endif |
86d56134f
|
649 |
#ifdef CONFIG_UEVENT_HELPER |
1da177e4c
|
650 |
{ |
1da177e4c
|
651 |
.procname = "hotplug", |
312c004d3
|
652 653 |
.data = &uevent_helper, .maxlen = UEVENT_HELPER_PATH_LEN, |
1da177e4c
|
654 |
.mode = 0644, |
6d4561110
|
655 |
.proc_handler = proc_dostring, |
1da177e4c
|
656 |
}, |
86d56134f
|
657 |
#endif |
1da177e4c
|
658 659 |
#ifdef CONFIG_CHR_DEV_SG { |
1da177e4c
|
660 661 662 663 |
.procname = "sg-big-buff", .data = &sg_big_buff, .maxlen = sizeof (int), .mode = 0444, |
6d4561110
|
664 |
.proc_handler = proc_dointvec, |
1da177e4c
|
665 666 667 668 |
}, #endif #ifdef CONFIG_BSD_PROCESS_ACCT { |
1da177e4c
|
669 670 671 672 |
.procname = "acct", .data = &acct_parm, .maxlen = 3*sizeof(int), .mode = 0644, |
6d4561110
|
673 |
.proc_handler = proc_dointvec, |
1da177e4c
|
674 675 |
}, #endif |
1da177e4c
|
676 677 |
#ifdef CONFIG_MAGIC_SYSRQ { |
1da177e4c
|
678 |
.procname = "sysrq", |
5d6f647fc
|
679 |
.data = &__sysrq_enabled, |
1da177e4c
|
680 681 |
.maxlen = sizeof (int), .mode = 0644, |
97f5f0cd8
|
682 |
.proc_handler = sysrq_sysctl_handler, |
1da177e4c
|
683 684 |
}, #endif |
d6f8ff738
|
685 |
#ifdef CONFIG_PROC_SYSCTL |
1da177e4c
|
686 |
{ |
1da177e4c
|
687 |
.procname = "cad_pid", |
9ec52099e
|
688 |
.data = NULL, |
1da177e4c
|
689 690 |
.maxlen = sizeof (int), .mode = 0600, |
6d4561110
|
691 |
.proc_handler = proc_do_cad_pid, |
1da177e4c
|
692 |
}, |
d6f8ff738
|
693 |
#endif |
1da177e4c
|
694 |
{ |
1da177e4c
|
695 696 697 698 |
.procname = "threads-max", .data = &max_threads, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
699 |
.proc_handler = proc_dointvec, |
1da177e4c
|
700 701 |
}, { |
1da177e4c
|
702 703 704 705 |
.procname = "random", .mode = 0555, .child = random_table, }, |
1da177e4c
|
706 |
{ |
17f60a7da
|
707 708 709 710 711 |
.procname = "usermodehelper", .mode = 0555, .child = usermodehelper_table, }, { |
1da177e4c
|
712 713 714 715 |
.procname = "overflowuid", .data = &overflowuid, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
716 |
.proc_handler = proc_dointvec_minmax, |
1da177e4c
|
717 718 719 720 |
.extra1 = &minolduid, .extra2 = &maxolduid, }, { |
1da177e4c
|
721 722 723 724 |
.procname = "overflowgid", .data = &overflowgid, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
725 |
.proc_handler = proc_dointvec_minmax, |
1da177e4c
|
726 727 728 |
.extra1 = &minolduid, .extra2 = &maxolduid, }, |
347a8dc3b
|
729 |
#ifdef CONFIG_S390 |
1da177e4c
|
730 731 |
#ifdef CONFIG_MATHEMU { |
1da177e4c
|
732 733 734 735 |
.procname = "ieee_emulation_warnings", .data = &sysctl_ieee_emulation_warnings, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
736 |
.proc_handler = proc_dointvec, |
1da177e4c
|
737 738 |
}, #endif |
1da177e4c
|
739 |
{ |
1da177e4c
|
740 |
.procname = "userprocess_debug", |
ab3c68ee5
|
741 |
.data = &show_unhandled_signals, |
1da177e4c
|
742 743 |
.maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
744 |
.proc_handler = proc_dointvec, |
1da177e4c
|
745 746 747 |
}, #endif { |
1da177e4c
|
748 749 750 751 |
.procname = "pid_max", .data = &pid_max, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
752 |
.proc_handler = proc_dointvec_minmax, |
1da177e4c
|
753 754 755 756 |
.extra1 = &pid_max_min, .extra2 = &pid_max_max, }, { |
1da177e4c
|
757 758 759 760 |
.procname = "panic_on_oops", .data = &panic_on_oops, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
761 |
.proc_handler = proc_dointvec, |
1da177e4c
|
762 |
}, |
7ef3d2fd1
|
763 764 |
#if defined CONFIG_PRINTK { |
7ef3d2fd1
|
765 766 767 768 |
.procname = "printk", .data = &console_loglevel, .maxlen = 4*sizeof(int), .mode = 0644, |
6d4561110
|
769 |
.proc_handler = proc_dointvec, |
7ef3d2fd1
|
770 |
}, |
1da177e4c
|
771 |
{ |
1da177e4c
|
772 |
.procname = "printk_ratelimit", |
717115e1a
|
773 |
.data = &printk_ratelimit_state.interval, |
1da177e4c
|
774 775 |
.maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
776 |
.proc_handler = proc_dointvec_jiffies, |
1da177e4c
|
777 778 |
}, { |
1da177e4c
|
779 |
.procname = "printk_ratelimit_burst", |
717115e1a
|
780 |
.data = &printk_ratelimit_state.burst, |
1da177e4c
|
781 782 |
.maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
783 |
.proc_handler = proc_dointvec, |
1da177e4c
|
784 |
}, |
af91322ef
|
785 |
{ |
af91322ef
|
786 787 788 789 |
.procname = "printk_delay", .data = &printk_delay_msec, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
790 |
.proc_handler = proc_dointvec_minmax, |
af91322ef
|
791 792 793 |
.extra1 = &zero, .extra2 = &ten_thousand, }, |
1da177e4c
|
794 |
{ |
eaf06b241
|
795 796 797 798 |
.procname = "dmesg_restrict", .data = &dmesg_restrict, .maxlen = sizeof(int), .mode = 0644, |
620f6e8e8
|
799 |
.proc_handler = proc_dointvec_minmax_sysadmin, |
eaf06b241
|
800 801 802 |
.extra1 = &zero, .extra2 = &one, }, |
455cd5ab3
|
803 804 805 806 807 |
{ .procname = "kptr_restrict", .data = &kptr_restrict, .maxlen = sizeof(int), .mode = 0644, |
620f6e8e8
|
808 |
.proc_handler = proc_dointvec_minmax_sysadmin, |
455cd5ab3
|
809 810 811 |
.extra1 = &zero, .extra2 = &two, }, |
df6e61d4c
|
812 |
#endif |
eaf06b241
|
813 |
{ |
1da177e4c
|
814 815 816 817 |
.procname = "ngroups_max", .data = &ngroups_max, .maxlen = sizeof (int), .mode = 0444, |
6d4561110
|
818 |
.proc_handler = proc_dointvec, |
1da177e4c
|
819 |
}, |
73efc0394
|
820 821 822 823 824 825 826 |
{ .procname = "cap_last_cap", .data = (void *)&cap_last_cap, .maxlen = sizeof(int), .mode = 0444, .proc_handler = proc_dointvec, }, |
58687acba
|
827 |
#if defined(CONFIG_LOCKUP_DETECTOR) |
504d7cf10
|
828 |
{ |
58687acba
|
829 |
.procname = "watchdog", |
3c00ea82c
|
830 |
.data = &watchdog_user_enabled, |
504d7cf10
|
831 832 |
.maxlen = sizeof (int), .mode = 0644, |
586692a5a
|
833 834 835 |
.proc_handler = proc_dowatchdog, .extra1 = &zero, .extra2 = &one, |
58687acba
|
836 837 838 |
}, { .procname = "watchdog_thresh", |
586692a5a
|
839 |
.data = &watchdog_thresh, |
58687acba
|
840 841 |
.maxlen = sizeof(int), .mode = 0644, |
586692a5a
|
842 |
.proc_handler = proc_dowatchdog, |
a6572f84c
|
843 |
.extra1 = &zero, |
58687acba
|
844 |
.extra2 = &sixty, |
504d7cf10
|
845 |
}, |
2508ce184
|
846 847 848 849 850 851 852 853 854 |
{ .procname = "softlockup_panic", .data = &softlockup_panic, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &one, }, |
ed235875e
|
855 856 857 858 859 860 861 862 863 864 865 |
#ifdef CONFIG_SMP { .procname = "softlockup_all_cpu_backtrace", .data = &sysctl_softlockup_all_cpu_backtrace, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &one, }, #endif /* CONFIG_SMP */ |
5dc305587
|
866 867 |
{ .procname = "nmi_watchdog", |
3c00ea82c
|
868 |
.data = &watchdog_user_enabled, |
5dc305587
|
869 870 |
.maxlen = sizeof (int), .mode = 0644, |
586692a5a
|
871 872 873 |
.proc_handler = proc_dowatchdog, .extra1 = &zero, .extra2 = &one, |
5dc305587
|
874 875 876 877 878 879 880 881 882 883 |
}, #endif #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) { .procname = "unknown_nmi_panic", .data = &unknown_nmi_panic, .maxlen = sizeof (int), .mode = 0644, .proc_handler = proc_dointvec, }, |
504d7cf10
|
884 |
#endif |
1da177e4c
|
885 886 |
#if defined(CONFIG_X86) { |
8da5adda9
|
887 888 889 890 |
.procname = "panic_on_unrecovered_nmi", .data = &panic_on_unrecovered_nmi, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
891 |
.proc_handler = proc_dointvec, |
8da5adda9
|
892 893 |
}, { |
5211a242d
|
894 895 896 897 |
.procname = "panic_on_io_nmi", .data = &panic_on_io_nmi, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
898 |
.proc_handler = proc_dointvec, |
5211a242d
|
899 |
}, |
55af77969
|
900 901 902 903 904 905 906 907 908 |
#ifdef CONFIG_DEBUG_STACKOVERFLOW { .procname = "panic_on_stackoverflow", .data = &sysctl_panic_on_stackoverflow, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, #endif |
5211a242d
|
909 |
{ |
1da177e4c
|
910 911 912 913 |
.procname = "bootloader_type", .data = &bootloader_type, .maxlen = sizeof (int), .mode = 0444, |
6d4561110
|
914 |
.proc_handler = proc_dointvec, |
1da177e4c
|
915 |
}, |
0741f4d20
|
916 |
{ |
5031296c5
|
917 918 919 920 |
.procname = "bootloader_version", .data = &bootloader_version, .maxlen = sizeof (int), .mode = 0444, |
6d4561110
|
921 |
.proc_handler = proc_dointvec, |
5031296c5
|
922 923 |
}, { |
0741f4d20
|
924 925 926 927 |
.procname = "kstack_depth_to_print", .data = &kstack_depth_to_print, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
928 |
.proc_handler = proc_dointvec, |
0741f4d20
|
929 |
}, |
6e7c40259
|
930 |
{ |
6e7c40259
|
931 932 933 934 |
.procname = "io_delay_type", .data = &io_delay_type, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
935 |
.proc_handler = proc_dointvec, |
6e7c40259
|
936 |
}, |
1da177e4c
|
937 |
#endif |
7a9166e3b
|
938 |
#if defined(CONFIG_MMU) |
1da177e4c
|
939 |
{ |
1da177e4c
|
940 941 942 943 |
.procname = "randomize_va_space", .data = &randomize_va_space, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
944 |
.proc_handler = proc_dointvec, |
1da177e4c
|
945 |
}, |
7a9166e3b
|
946 |
#endif |
0152fb376
|
947 |
#if defined(CONFIG_S390) && defined(CONFIG_SMP) |
951f22d5b
|
948 |
{ |
951f22d5b
|
949 950 951 952 |
.procname = "spin_retry", .data = &spin_retry, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
953 |
.proc_handler = proc_dointvec, |
951f22d5b
|
954 955 |
}, #endif |
673d5b43d
|
956 |
#if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86) |
c255d844d
|
957 |
{ |
c255d844d
|
958 |
.procname = "acpi_video_flags", |
77afcf78a
|
959 |
.data = &acpi_realmode_flags, |
c255d844d
|
960 961 |
.maxlen = sizeof (unsigned long), .mode = 0644, |
6d4561110
|
962 |
.proc_handler = proc_doulongvec_minmax, |
c255d844d
|
963 964 |
}, #endif |
b6fca7253
|
965 |
#ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN |
d2b176ed8
|
966 |
{ |
d2b176ed8
|
967 968 969 970 |
.procname = "ignore-unaligned-usertrap", .data = &no_unaligned_warning, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
971 |
.proc_handler = proc_dointvec, |
d2b176ed8
|
972 |
}, |
b6fca7253
|
973 974 |
#endif #ifdef CONFIG_IA64 |
88fc241f5
|
975 |
{ |
88fc241f5
|
976 977 978 979 |
.procname = "unaligned-dump-stack", .data = &unaligned_dump_stack, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
980 |
.proc_handler = proc_dointvec, |
88fc241f5
|
981 |
}, |
d2b176ed8
|
982 |
#endif |
e162b39a3
|
983 984 |
#ifdef CONFIG_DETECT_HUNG_TASK { |
e162b39a3
|
985 986 987 988 |
.procname = "hung_task_panic", .data = &sysctl_hung_task_panic, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
989 |
.proc_handler = proc_dointvec_minmax, |
e162b39a3
|
990 991 992 |
.extra1 = &zero, .extra2 = &one, }, |
82a1fcb90
|
993 |
{ |
82a1fcb90
|
994 995 |
.procname = "hung_task_check_count", .data = &sysctl_hung_task_check_count, |
cd64647f0
|
996 |
.maxlen = sizeof(int), |
82a1fcb90
|
997 |
.mode = 0644, |
cd64647f0
|
998 999 |
.proc_handler = proc_dointvec_minmax, .extra1 = &zero, |
82a1fcb90
|
1000 1001 |
}, { |
82a1fcb90
|
1002 1003 |
.procname = "hung_task_timeout_secs", .data = &sysctl_hung_task_timeout_secs, |
90739081e
|
1004 |
.maxlen = sizeof(unsigned long), |
82a1fcb90
|
1005 |
.mode = 0644, |
6d4561110
|
1006 |
.proc_handler = proc_dohung_task_timeout_secs, |
80df28476
|
1007 |
.extra2 = &hung_task_timeout_max, |
82a1fcb90
|
1008 1009 |
}, { |
82a1fcb90
|
1010 1011 |
.procname = "hung_task_warnings", .data = &sysctl_hung_task_warnings, |
270750dbc
|
1012 |
.maxlen = sizeof(int), |
82a1fcb90
|
1013 |
.mode = 0644, |
270750dbc
|
1014 1015 |
.proc_handler = proc_dointvec_minmax, .extra1 = &neg_one, |
82a1fcb90
|
1016 |
}, |
c4f3b63fe
|
1017 |
#endif |
bebfa1013
|
1018 1019 |
#ifdef CONFIG_COMPAT { |
bebfa1013
|
1020 1021 1022 1023 |
.procname = "compat-log", .data = &compat_log, .maxlen = sizeof (int), .mode = 0644, |
6d4561110
|
1024 |
.proc_handler = proc_dointvec, |
bebfa1013
|
1025 1026 |
}, #endif |
23f78d4a0
|
1027 1028 |
#ifdef CONFIG_RT_MUTEXES { |
23f78d4a0
|
1029 1030 1031 1032 |
.procname = "max_lock_depth", .data = &max_lock_depth, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1033 |
.proc_handler = proc_dointvec, |
23f78d4a0
|
1034 1035 |
}, #endif |
10a0a8d4e
|
1036 |
{ |
10a0a8d4e
|
1037 1038 1039 1040 |
.procname = "poweroff_cmd", .data = &poweroff_cmd, .maxlen = POWEROFF_CMD_PATH_LEN, .mode = 0644, |
6d4561110
|
1041 |
.proc_handler = proc_dostring, |
10a0a8d4e
|
1042 |
}, |
0b77f5bfb
|
1043 1044 |
#ifdef CONFIG_KEYS { |
0b77f5bfb
|
1045 1046 1047 1048 1049 |
.procname = "keys", .mode = 0555, .child = key_sysctls, }, #endif |
cdd6c482c
|
1050 |
#ifdef CONFIG_PERF_EVENTS |
aa4a22187
|
1051 1052 1053 1054 1055 1056 |
/* * User-space scripts rely on the existence of this file * as a feature check for perf_events being enabled. * * So it's an ABI, do not remove! */ |
1ccd15497
|
1057 |
{ |
cdd6c482c
|
1058 1059 1060 |
.procname = "perf_event_paranoid", .data = &sysctl_perf_event_paranoid, .maxlen = sizeof(sysctl_perf_event_paranoid), |
1ccd15497
|
1061 |
.mode = 0644, |
6d4561110
|
1062 |
.proc_handler = proc_dointvec, |
1ccd15497
|
1063 |
}, |
c5078f78b
|
1064 |
{ |
cdd6c482c
|
1065 1066 1067 |
.procname = "perf_event_mlock_kb", .data = &sysctl_perf_event_mlock, .maxlen = sizeof(sysctl_perf_event_mlock), |
c5078f78b
|
1068 |
.mode = 0644, |
6d4561110
|
1069 |
.proc_handler = proc_dointvec, |
c5078f78b
|
1070 |
}, |
a78ac3258
|
1071 |
{ |
cdd6c482c
|
1072 1073 1074 |
.procname = "perf_event_max_sample_rate", .data = &sysctl_perf_event_sample_rate, .maxlen = sizeof(sysctl_perf_event_sample_rate), |
a78ac3258
|
1075 |
.mode = 0644, |
163ec4354
|
1076 |
.proc_handler = perf_proc_update_handler, |
723478c8a
|
1077 |
.extra1 = &one, |
a78ac3258
|
1078 |
}, |
14c63f17b
|
1079 1080 1081 1082 1083 1084 1085 1086 1087 |
{ .procname = "perf_cpu_time_max_percent", .data = &sysctl_perf_cpu_time_max_percent, .maxlen = sizeof(sysctl_perf_cpu_time_max_percent), .mode = 0644, .proc_handler = perf_cpu_time_max_percent_handler, .extra1 = &zero, .extra2 = &one_hundred, }, |
1ccd15497
|
1088 |
#endif |
dfec072ec
|
1089 1090 |
#ifdef CONFIG_KMEMCHECK { |
dfec072ec
|
1091 1092 1093 1094 |
.procname = "kmemcheck", .data = &kmemcheck_enabled, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1095 |
.proc_handler = proc_dointvec, |
dfec072ec
|
1096 1097 |
}, #endif |
9e3961a09
|
1098 1099 1100 1101 1102 1103 1104 1105 1106 |
{ .procname = "panic_on_warn", .data = &panic_on_warn, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &one, }, |
6fce56ec9
|
1107 |
{ } |
1da177e4c
|
1108 |
}; |
d8217f076
|
1109 |
static struct ctl_table vm_table[] = { |
1da177e4c
|
1110 |
{ |
1da177e4c
|
1111 1112 1113 1114 |
.procname = "overcommit_memory", .data = &sysctl_overcommit_memory, .maxlen = sizeof(sysctl_overcommit_memory), .mode = 0644, |
cb16e95fa
|
1115 1116 1117 |
.proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &two, |
1da177e4c
|
1118 1119 |
}, { |
fadd8fbd1
|
1120 1121 1122 1123 |
.procname = "panic_on_oom", .data = &sysctl_panic_on_oom, .maxlen = sizeof(sysctl_panic_on_oom), .mode = 0644, |
cb16e95fa
|
1124 1125 1126 |
.proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &two, |
fadd8fbd1
|
1127 1128 |
}, { |
fe071d7e8
|
1129 1130 1131 1132 |
.procname = "oom_kill_allocating_task", .data = &sysctl_oom_kill_allocating_task, .maxlen = sizeof(sysctl_oom_kill_allocating_task), .mode = 0644, |
6d4561110
|
1133 |
.proc_handler = proc_dointvec, |
fe071d7e8
|
1134 1135 |
}, { |
fef1bdd68
|
1136 1137 1138 1139 |
.procname = "oom_dump_tasks", .data = &sysctl_oom_dump_tasks, .maxlen = sizeof(sysctl_oom_dump_tasks), .mode = 0644, |
6d4561110
|
1140 |
.proc_handler = proc_dointvec, |
fef1bdd68
|
1141 1142 |
}, { |
1da177e4c
|
1143 1144 1145 1146 |
.procname = "overcommit_ratio", .data = &sysctl_overcommit_ratio, .maxlen = sizeof(sysctl_overcommit_ratio), .mode = 0644, |
49f0ce5f9
|
1147 1148 1149 1150 1151 1152 1153 1154 |
.proc_handler = overcommit_ratio_handler, }, { .procname = "overcommit_kbytes", .data = &sysctl_overcommit_kbytes, .maxlen = sizeof(sysctl_overcommit_kbytes), .mode = 0644, .proc_handler = overcommit_kbytes_handler, |
1da177e4c
|
1155 1156 |
}, { |
1da177e4c
|
1157 1158 1159 1160 |
.procname = "page-cluster", .data = &page_cluster, .maxlen = sizeof(int), .mode = 0644, |
cb16e95fa
|
1161 1162 |
.proc_handler = proc_dointvec_minmax, .extra1 = &zero, |
1da177e4c
|
1163 1164 |
}, { |
1da177e4c
|
1165 1166 1167 1168 |
.procname = "dirty_background_ratio", .data = &dirty_background_ratio, .maxlen = sizeof(dirty_background_ratio), .mode = 0644, |
6d4561110
|
1169 |
.proc_handler = dirty_background_ratio_handler, |
1da177e4c
|
1170 1171 1172 1173 |
.extra1 = &zero, .extra2 = &one_hundred, }, { |
2da02997e
|
1174 1175 1176 1177 |
.procname = "dirty_background_bytes", .data = &dirty_background_bytes, .maxlen = sizeof(dirty_background_bytes), .mode = 0644, |
6d4561110
|
1178 |
.proc_handler = dirty_background_bytes_handler, |
fc3501d41
|
1179 |
.extra1 = &one_ul, |
2da02997e
|
1180 1181 |
}, { |
1da177e4c
|
1182 1183 1184 1185 |
.procname = "dirty_ratio", .data = &vm_dirty_ratio, .maxlen = sizeof(vm_dirty_ratio), .mode = 0644, |
6d4561110
|
1186 |
.proc_handler = dirty_ratio_handler, |
1da177e4c
|
1187 1188 1189 1190 |
.extra1 = &zero, .extra2 = &one_hundred, }, { |
2da02997e
|
1191 1192 1193 1194 |
.procname = "dirty_bytes", .data = &vm_dirty_bytes, .maxlen = sizeof(vm_dirty_bytes), .mode = 0644, |
6d4561110
|
1195 |
.proc_handler = dirty_bytes_handler, |
9e4a5bda8
|
1196 |
.extra1 = &dirty_bytes_min, |
2da02997e
|
1197 1198 |
}, { |
1da177e4c
|
1199 |
.procname = "dirty_writeback_centisecs", |
f6ef94381
|
1200 1201 |
.data = &dirty_writeback_interval, .maxlen = sizeof(dirty_writeback_interval), |
1da177e4c
|
1202 |
.mode = 0644, |
6d4561110
|
1203 |
.proc_handler = dirty_writeback_centisecs_handler, |
1da177e4c
|
1204 1205 |
}, { |
1da177e4c
|
1206 |
.procname = "dirty_expire_centisecs", |
f6ef94381
|
1207 1208 |
.data = &dirty_expire_interval, .maxlen = sizeof(dirty_expire_interval), |
1da177e4c
|
1209 |
.mode = 0644, |
cb16e95fa
|
1210 1211 |
.proc_handler = proc_dointvec_minmax, .extra1 = &zero, |
1da177e4c
|
1212 1213 |
}, { |
3965c9ae4
|
1214 1215 1216 |
.procname = "nr_pdflush_threads", .mode = 0444 /* read-only */, .proc_handler = pdflush_proc_obsolete, |
1da177e4c
|
1217 1218 |
}, { |
1da177e4c
|
1219 1220 1221 1222 |
.procname = "swappiness", .data = &vm_swappiness, .maxlen = sizeof(vm_swappiness), .mode = 0644, |
6d4561110
|
1223 |
.proc_handler = proc_dointvec_minmax, |
1da177e4c
|
1224 1225 1226 1227 |
.extra1 = &zero, .extra2 = &one_hundred, }, #ifdef CONFIG_HUGETLB_PAGE |
06808b082
|
1228 |
{ |
1da177e4c
|
1229 |
.procname = "nr_hugepages", |
e5ff21594
|
1230 |
.data = NULL, |
1da177e4c
|
1231 1232 |
.maxlen = sizeof(unsigned long), .mode = 0644, |
6d4561110
|
1233 |
.proc_handler = hugetlb_sysctl_handler, |
ed4d4902e
|
1234 |
.extra1 = &zero, |
06808b082
|
1235 1236 1237 1238 1239 1240 1241 1242 |
}, #ifdef CONFIG_NUMA { .procname = "nr_hugepages_mempolicy", .data = NULL, .maxlen = sizeof(unsigned long), .mode = 0644, .proc_handler = &hugetlb_mempolicy_sysctl_handler, |
ed4d4902e
|
1243 |
.extra1 = &zero, |
06808b082
|
1244 1245 |
}, #endif |
1da177e4c
|
1246 |
{ |
1da177e4c
|
1247 1248 1249 1250 |
.procname = "hugetlb_shm_group", .data = &sysctl_hugetlb_shm_group, .maxlen = sizeof(gid_t), .mode = 0644, |
6d4561110
|
1251 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1252 |
}, |
396faf030
|
1253 |
{ |
396faf030
|
1254 1255 1256 1257 |
.procname = "hugepages_treat_as_movable", .data = &hugepages_treat_as_movable, .maxlen = sizeof(int), .mode = 0644, |
86cdb465c
|
1258 |
.proc_handler = proc_dointvec, |
396faf030
|
1259 |
}, |
54f9f80d6
|
1260 |
{ |
d1c3fb1f8
|
1261 |
.procname = "nr_overcommit_hugepages", |
e5ff21594
|
1262 1263 |
.data = NULL, .maxlen = sizeof(unsigned long), |
d1c3fb1f8
|
1264 |
.mode = 0644, |
6d4561110
|
1265 |
.proc_handler = hugetlb_overcommit_handler, |
ed4d4902e
|
1266 |
.extra1 = &zero, |
d1c3fb1f8
|
1267 |
}, |
1da177e4c
|
1268 1269 |
#endif { |
1da177e4c
|
1270 1271 1272 1273 |
.procname = "lowmem_reserve_ratio", .data = &sysctl_lowmem_reserve_ratio, .maxlen = sizeof(sysctl_lowmem_reserve_ratio), .mode = 0644, |
6d4561110
|
1274 |
.proc_handler = lowmem_reserve_ratio_sysctl_handler, |
1da177e4c
|
1275 1276 |
}, { |
9d0243bca
|
1277 1278 1279 1280 1281 |
.procname = "drop_caches", .data = &sysctl_drop_caches, .maxlen = sizeof(int), .mode = 0644, .proc_handler = drop_caches_sysctl_handler, |
cb16e95fa
|
1282 |
.extra1 = &one, |
5509a5d27
|
1283 |
.extra2 = &four, |
9d0243bca
|
1284 |
}, |
76ab0f530
|
1285 1286 1287 1288 1289 1290 1291 1292 |
#ifdef CONFIG_COMPACTION { .procname = "compact_memory", .data = &sysctl_compact_memory, .maxlen = sizeof(int), .mode = 0200, .proc_handler = sysctl_compaction_handler, }, |
5e7719058
|
1293 1294 1295 1296 1297 1298 1299 1300 1301 |
{ .procname = "extfrag_threshold", .data = &sysctl_extfrag_threshold, .maxlen = sizeof(int), .mode = 0644, .proc_handler = sysctl_extfrag_handler, .extra1 = &min_extfrag_threshold, .extra2 = &max_extfrag_threshold, }, |
76ab0f530
|
1302 |
#endif /* CONFIG_COMPACTION */ |
9d0243bca
|
1303 |
{ |
1da177e4c
|
1304 1305 1306 1307 |
.procname = "min_free_kbytes", .data = &min_free_kbytes, .maxlen = sizeof(min_free_kbytes), .mode = 0644, |
6d4561110
|
1308 |
.proc_handler = min_free_kbytes_sysctl_handler, |
1da177e4c
|
1309 1310 |
.extra1 = &zero, }, |
8ad4b1fb8
|
1311 |
{ |
8ad4b1fb8
|
1312 1313 1314 1315 |
.procname = "percpu_pagelist_fraction", .data = &percpu_pagelist_fraction, .maxlen = sizeof(percpu_pagelist_fraction), .mode = 0644, |
6d4561110
|
1316 |
.proc_handler = percpu_pagelist_fraction_sysctl_handler, |
7cd2b0a34
|
1317 |
.extra1 = &zero, |
8ad4b1fb8
|
1318 |
}, |
1da177e4c
|
1319 1320 |
#ifdef CONFIG_MMU { |
1da177e4c
|
1321 1322 1323 1324 |
.procname = "max_map_count", .data = &sysctl_max_map_count, .maxlen = sizeof(sysctl_max_map_count), .mode = 0644, |
3e26120cc
|
1325 |
.proc_handler = proc_dointvec_minmax, |
70da2340f
|
1326 |
.extra1 = &zero, |
1da177e4c
|
1327 |
}, |
dd8632a12
|
1328 1329 |
#else { |
dd8632a12
|
1330 1331 1332 1333 |
.procname = "nr_trim_pages", .data = &sysctl_nr_trim_pages, .maxlen = sizeof(sysctl_nr_trim_pages), .mode = 0644, |
6d4561110
|
1334 |
.proc_handler = proc_dointvec_minmax, |
dd8632a12
|
1335 1336 |
.extra1 = &zero, }, |
1da177e4c
|
1337 1338 |
#endif { |
1da177e4c
|
1339 1340 1341 1342 |
.procname = "laptop_mode", .data = &laptop_mode, .maxlen = sizeof(laptop_mode), .mode = 0644, |
6d4561110
|
1343 |
.proc_handler = proc_dointvec_jiffies, |
1da177e4c
|
1344 1345 |
}, { |
1da177e4c
|
1346 1347 1348 1349 |
.procname = "block_dump", .data = &block_dump, .maxlen = sizeof(block_dump), .mode = 0644, |
6d4561110
|
1350 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1351 1352 1353 |
.extra1 = &zero, }, { |
1da177e4c
|
1354 1355 1356 1357 |
.procname = "vfs_cache_pressure", .data = &sysctl_vfs_cache_pressure, .maxlen = sizeof(sysctl_vfs_cache_pressure), .mode = 0644, |
6d4561110
|
1358 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1359 1360 1361 1362 |
.extra1 = &zero, }, #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT { |
1da177e4c
|
1363 1364 1365 1366 |
.procname = "legacy_va_layout", .data = &sysctl_legacy_va_layout, .maxlen = sizeof(sysctl_legacy_va_layout), .mode = 0644, |
6d4561110
|
1367 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1368 1369 1370 |
.extra1 = &zero, }, #endif |
1743660b9
|
1371 1372 |
#ifdef CONFIG_NUMA { |
1743660b9
|
1373 1374 1375 1376 |
.procname = "zone_reclaim_mode", .data = &zone_reclaim_mode, .maxlen = sizeof(zone_reclaim_mode), .mode = 0644, |
6d4561110
|
1377 |
.proc_handler = proc_dointvec, |
c84db23c6
|
1378 |
.extra1 = &zero, |
1743660b9
|
1379 |
}, |
9614634fe
|
1380 |
{ |
9614634fe
|
1381 1382 1383 1384 |
.procname = "min_unmapped_ratio", .data = &sysctl_min_unmapped_ratio, .maxlen = sizeof(sysctl_min_unmapped_ratio), .mode = 0644, |
6d4561110
|
1385 |
.proc_handler = sysctl_min_unmapped_ratio_sysctl_handler, |
9614634fe
|
1386 1387 1388 |
.extra1 = &zero, .extra2 = &one_hundred, }, |
0ff38490c
|
1389 |
{ |
0ff38490c
|
1390 1391 1392 1393 |
.procname = "min_slab_ratio", .data = &sysctl_min_slab_ratio, .maxlen = sizeof(sysctl_min_slab_ratio), .mode = 0644, |
6d4561110
|
1394 |
.proc_handler = sysctl_min_slab_ratio_sysctl_handler, |
0ff38490c
|
1395 1396 1397 |
.extra1 = &zero, .extra2 = &one_hundred, }, |
1743660b9
|
1398 |
#endif |
77461ab33
|
1399 1400 |
#ifdef CONFIG_SMP { |
77461ab33
|
1401 1402 1403 1404 |
.procname = "stat_interval", .data = &sysctl_stat_interval, .maxlen = sizeof(sysctl_stat_interval), .mode = 0644, |
6d4561110
|
1405 |
.proc_handler = proc_dointvec_jiffies, |
77461ab33
|
1406 1407 |
}, #endif |
6e1415467
|
1408 |
#ifdef CONFIG_MMU |
ed0321895
|
1409 |
{ |
ed0321895
|
1410 |
.procname = "mmap_min_addr", |
788084aba
|
1411 1412 |
.data = &dac_mmap_min_addr, .maxlen = sizeof(unsigned long), |
ed0321895
|
1413 |
.mode = 0644, |
6d4561110
|
1414 |
.proc_handler = mmap_min_addr_handler, |
ed0321895
|
1415 |
}, |
6e1415467
|
1416 |
#endif |
f0c0b2b80
|
1417 1418 |
#ifdef CONFIG_NUMA { |
f0c0b2b80
|
1419 1420 1421 1422 |
.procname = "numa_zonelist_order", .data = &numa_zonelist_order, .maxlen = NUMA_ZONELIST_ORDER_LEN, .mode = 0644, |
6d4561110
|
1423 |
.proc_handler = numa_zonelist_order_handler, |
f0c0b2b80
|
1424 1425 |
}, #endif |
2b8232ce5
|
1426 |
#if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ |
5c36e6578
|
1427 |
(defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) |
e6e5494cb
|
1428 |
{ |
e6e5494cb
|
1429 |
.procname = "vdso_enabled", |
3d7ee969b
|
1430 1431 1432 1433 |
#ifdef CONFIG_X86_32 .data = &vdso32_enabled, .maxlen = sizeof(vdso32_enabled), #else |
e6e5494cb
|
1434 1435 |
.data = &vdso_enabled, .maxlen = sizeof(vdso_enabled), |
3d7ee969b
|
1436 |
#endif |
e6e5494cb
|
1437 |
.mode = 0644, |
6d4561110
|
1438 |
.proc_handler = proc_dointvec, |
e6e5494cb
|
1439 1440 1441 |
.extra1 = &zero, }, #endif |
195cf453d
|
1442 1443 |
#ifdef CONFIG_HIGHMEM { |
195cf453d
|
1444 1445 1446 1447 |
.procname = "highmem_is_dirtyable", .data = &vm_highmem_is_dirtyable, .maxlen = sizeof(vm_highmem_is_dirtyable), .mode = 0644, |
6d4561110
|
1448 |
.proc_handler = proc_dointvec_minmax, |
195cf453d
|
1449 1450 1451 1452 |
.extra1 = &zero, .extra2 = &one, }, #endif |
6a46079cf
|
1453 1454 |
#ifdef CONFIG_MEMORY_FAILURE { |
6a46079cf
|
1455 1456 1457 1458 |
.procname = "memory_failure_early_kill", .data = &sysctl_memory_failure_early_kill, .maxlen = sizeof(sysctl_memory_failure_early_kill), .mode = 0644, |
6d4561110
|
1459 |
.proc_handler = proc_dointvec_minmax, |
6a46079cf
|
1460 1461 1462 1463 |
.extra1 = &zero, .extra2 = &one, }, { |
6a46079cf
|
1464 1465 1466 1467 |
.procname = "memory_failure_recovery", .data = &sysctl_memory_failure_recovery, .maxlen = sizeof(sysctl_memory_failure_recovery), .mode = 0644, |
6d4561110
|
1468 |
.proc_handler = proc_dointvec_minmax, |
6a46079cf
|
1469 1470 1471 1472 |
.extra1 = &zero, .extra2 = &one, }, #endif |
c9b1d0981
|
1473 1474 1475 1476 1477 1478 1479 |
{ .procname = "user_reserve_kbytes", .data = &sysctl_user_reserve_kbytes, .maxlen = sizeof(sysctl_user_reserve_kbytes), .mode = 0644, .proc_handler = proc_doulongvec_minmax, }, |
4eeab4f55
|
1480 1481 1482 1483 1484 1485 1486 |
{ .procname = "admin_reserve_kbytes", .data = &sysctl_admin_reserve_kbytes, .maxlen = sizeof(sysctl_admin_reserve_kbytes), .mode = 0644, .proc_handler = proc_doulongvec_minmax, }, |
6fce56ec9
|
1487 |
{ } |
1da177e4c
|
1488 |
}; |
2abc26fc6
|
1489 |
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
d8217f076
|
1490 |
static struct ctl_table binfmt_misc_table[] = { |
6fce56ec9
|
1491 |
{ } |
2abc26fc6
|
1492 1493 |
}; #endif |
d8217f076
|
1494 |
static struct ctl_table fs_table[] = { |
1da177e4c
|
1495 |
{ |
1da177e4c
|
1496 1497 |
.procname = "inode-nr", .data = &inodes_stat, |
3942c07cc
|
1498 |
.maxlen = 2*sizeof(long), |
1da177e4c
|
1499 |
.mode = 0444, |
cffbc8aa3
|
1500 |
.proc_handler = proc_nr_inodes, |
1da177e4c
|
1501 1502 |
}, { |
1da177e4c
|
1503 1504 |
.procname = "inode-state", .data = &inodes_stat, |
3942c07cc
|
1505 |
.maxlen = 7*sizeof(long), |
1da177e4c
|
1506 |
.mode = 0444, |
cffbc8aa3
|
1507 |
.proc_handler = proc_nr_inodes, |
1da177e4c
|
1508 1509 |
}, { |
1da177e4c
|
1510 1511 |
.procname = "file-nr", .data = &files_stat, |
518de9b39
|
1512 |
.maxlen = sizeof(files_stat), |
1da177e4c
|
1513 |
.mode = 0444, |
6d4561110
|
1514 |
.proc_handler = proc_nr_files, |
1da177e4c
|
1515 1516 |
}, { |
1da177e4c
|
1517 1518 |
.procname = "file-max", .data = &files_stat.max_files, |
518de9b39
|
1519 |
.maxlen = sizeof(files_stat.max_files), |
1da177e4c
|
1520 |
.mode = 0644, |
518de9b39
|
1521 |
.proc_handler = proc_doulongvec_minmax, |
1da177e4c
|
1522 1523 |
}, { |
9cfe015aa
|
1524 1525 1526 1527 |
.procname = "nr_open", .data = &sysctl_nr_open, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1528 |
.proc_handler = proc_dointvec_minmax, |
eceea0b3d
|
1529 1530 |
.extra1 = &sysctl_nr_open_min, .extra2 = &sysctl_nr_open_max, |
9cfe015aa
|
1531 1532 |
}, { |
1da177e4c
|
1533 1534 |
.procname = "dentry-state", .data = &dentry_stat, |
3942c07cc
|
1535 |
.maxlen = 6*sizeof(long), |
1da177e4c
|
1536 |
.mode = 0444, |
312d3ca85
|
1537 |
.proc_handler = proc_nr_dentry, |
1da177e4c
|
1538 1539 |
}, { |
1da177e4c
|
1540 1541 1542 1543 |
.procname = "overflowuid", .data = &fs_overflowuid, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1544 |
.proc_handler = proc_dointvec_minmax, |
1da177e4c
|
1545 1546 1547 1548 |
.extra1 = &minolduid, .extra2 = &maxolduid, }, { |
1da177e4c
|
1549 1550 1551 1552 |
.procname = "overflowgid", .data = &fs_overflowgid, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1553 |
.proc_handler = proc_dointvec_minmax, |
1da177e4c
|
1554 1555 1556 |
.extra1 = &minolduid, .extra2 = &maxolduid, }, |
bfcd17a6c
|
1557 |
#ifdef CONFIG_FILE_LOCKING |
1da177e4c
|
1558 |
{ |
1da177e4c
|
1559 1560 1561 1562 |
.procname = "leases-enable", .data = &leases_enable, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1563 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1564 |
}, |
bfcd17a6c
|
1565 |
#endif |
1da177e4c
|
1566 1567 |
#ifdef CONFIG_DNOTIFY { |
1da177e4c
|
1568 1569 1570 1571 |
.procname = "dir-notify-enable", .data = &dir_notify_enable, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1572 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1573 1574 1575 |
}, #endif #ifdef CONFIG_MMU |
bfcd17a6c
|
1576 |
#ifdef CONFIG_FILE_LOCKING |
1da177e4c
|
1577 |
{ |
1da177e4c
|
1578 1579 1580 1581 |
.procname = "lease-break-time", .data = &lease_break_time, .maxlen = sizeof(int), .mode = 0644, |
6d4561110
|
1582 |
.proc_handler = proc_dointvec, |
1da177e4c
|
1583 |
}, |
bfcd17a6c
|
1584 |
#endif |
ebf3f09c6
|
1585 |
#ifdef CONFIG_AIO |
1da177e4c
|
1586 |
{ |
1da177e4c
|
1587 1588 1589 1590 |
.procname = "aio-nr", .data = &aio_nr, .maxlen = sizeof(aio_nr), .mode = 0444, |
6d4561110
|
1591 |
.proc_handler = proc_doulongvec_minmax, |
1da177e4c
|
1592 1593 |
}, { |
1da177e4c
|
1594 1595 1596 1597 |
.procname = "aio-max-nr", .data = &aio_max_nr, .maxlen = sizeof(aio_max_nr), .mode = 0644, |
6d4561110
|
1598 |
.proc_handler = proc_doulongvec_minmax, |
1da177e4c
|
1599 |
}, |
ebf3f09c6
|
1600 |
#endif /* CONFIG_AIO */ |
2d9048e20
|
1601 |
#ifdef CONFIG_INOTIFY_USER |
0399cb08c
|
1602 |
{ |
0399cb08c
|
1603 1604 1605 1606 1607 |
.procname = "inotify", .mode = 0555, .child = inotify_table, }, #endif |
7ef9964e6
|
1608 1609 1610 1611 1612 1613 1614 |
#ifdef CONFIG_EPOLL { .procname = "epoll", .mode = 0555, .child = epoll_table, }, #endif |
1da177e4c
|
1615 |
#endif |
d6e711448
|
1616 |
{ |
800179c9b
|
1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 |
.procname = "protected_symlinks", .data = &sysctl_protected_symlinks, .maxlen = sizeof(int), .mode = 0600, .proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &one, }, { .procname = "protected_hardlinks", .data = &sysctl_protected_hardlinks, .maxlen = sizeof(int), .mode = 0600, .proc_handler = proc_dointvec_minmax, .extra1 = &zero, .extra2 = &one, }, { |
d6e711448
|
1635 1636 1637 1638 |
.procname = "suid_dumpable", .data = &suid_dumpable, .maxlen = sizeof(int), .mode = 0644, |
54b501992
|
1639 |
.proc_handler = proc_dointvec_minmax_coredump, |
8e654fba4
|
1640 1641 |
.extra1 = &zero, .extra2 = &two, |
d6e711448
|
1642 |
}, |
2abc26fc6
|
1643 1644 |
#if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) { |
2abc26fc6
|
1645 1646 1647 1648 1649 |
.procname = "binfmt_misc", .mode = 0555, .child = binfmt_misc_table, }, #endif |
b492e95be
|
1650 |
{ |
ff9da691c
|
1651 1652 |
.procname = "pipe-max-size", .data = &pipe_max_size, |
b492e95be
|
1653 1654 |
.maxlen = sizeof(int), .mode = 0644, |
ff9da691c
|
1655 1656 |
.proc_handler = &pipe_proc_fn, .extra1 = &pipe_min_size, |
b492e95be
|
1657 |
}, |
6fce56ec9
|
1658 |
{ } |
1da177e4c
|
1659 |
}; |
d8217f076
|
1660 |
static struct ctl_table debug_table[] = { |
7ac57a89d
|
1661 |
#ifdef CONFIG_SYSCTL_EXCEPTION_TRACE |
abd4f7505
|
1662 |
{ |
abd4f7505
|
1663 1664 1665 1666 1667 1668 1669 |
.procname = "exception-trace", .data = &show_unhandled_signals, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec }, #endif |
b2be84df9
|
1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 |
#if defined(CONFIG_OPTPROBES) { .procname = "kprobes-optimization", .data = &sysctl_kprobes_optimization, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_kprobes_optimization_handler, .extra1 = &zero, .extra2 = &one, }, #endif |
6fce56ec9
|
1681 |
{ } |
1da177e4c
|
1682 |
}; |
d8217f076
|
1683 |
static struct ctl_table dev_table[] = { |
6fce56ec9
|
1684 |
{ } |
0eeca2830
|
1685 |
}; |
1da177e4c
|
1686 |
|
de4e83bd6
|
1687 |
int __init sysctl_init(void) |
d912b0cc1
|
1688 |
{ |
fd4b616b0
|
1689 1690 1691 1692 |
struct ctl_table_header *hdr; hdr = register_sysctl_table(sysctl_base_table); kmemleak_not_leak(hdr); |
d912b0cc1
|
1693 1694 |
return 0; } |
b89a81712
|
1695 |
#endif /* CONFIG_SYSCTL */ |
1da177e4c
|
1696 1697 1698 |
/* * /proc/sys support */ |
b89a81712
|
1699 |
#ifdef CONFIG_PROC_SYSCTL |
1da177e4c
|
1700 |
|
f88083005
|
1701 1702 |
static int _proc_do_string(char *data, int maxlen, int write, char __user *buffer, |
b1ba4ddde
|
1703 |
size_t *lenp, loff_t *ppos) |
1da177e4c
|
1704 1705 1706 1707 |
{ size_t len; char __user *p; char c; |
8d0608771
|
1708 1709 |
if (!data || !maxlen || !*lenp) { |
1da177e4c
|
1710 1711 1712 |
*lenp = 0; return 0; } |
8d0608771
|
1713 |
|
1da177e4c
|
1714 |
if (write) { |
f4aacea2f
|
1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 |
if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) { /* Only continue writes not past the end of buffer. */ len = strlen(data); if (len > maxlen - 1) len = maxlen - 1; if (*ppos > len) return 0; len = *ppos; } else { /* Start writing from beginning of buffer. */ len = 0; } |
2ca9bb456
|
1728 |
*ppos += *lenp; |
1da177e4c
|
1729 |
p = buffer; |
2ca9bb456
|
1730 |
while ((p - buffer) < *lenp && len < maxlen - 1) { |
1da177e4c
|
1731 1732 1733 1734 1735 |
if (get_user(c, p++)) return -EFAULT; if (c == 0 || c == ' ') break; |
2ca9bb456
|
1736 |
data[len++] = c; |
1da177e4c
|
1737 |
} |
f88083005
|
1738 |
data[len] = 0; |
1da177e4c
|
1739 |
} else { |
f5dd3d6fa
|
1740 1741 1742 |
len = strlen(data); if (len > maxlen) len = maxlen; |
8d0608771
|
1743 1744 1745 1746 1747 1748 1749 1750 |
if (*ppos > len) { *lenp = 0; return 0; } data += *ppos; len -= *ppos; |
1da177e4c
|
1751 1752 1753 |
if (len > *lenp) len = *lenp; if (len) |
f88083005
|
1754 |
if (copy_to_user(buffer, data, len)) |
1da177e4c
|
1755 1756 |
return -EFAULT; if (len < *lenp) { |
f88083005
|
1757 1758 |
if (put_user(' ', buffer + len)) |
1da177e4c
|
1759 1760 1761 1762 1763 1764 1765 1766 |
return -EFAULT; len++; } *lenp = len; *ppos += len; } return 0; } |
f4aacea2f
|
1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 |
static void warn_sysctl_write(struct ctl_table *table) { pr_warn_once("%s wrote to %s when file position was not 0! " "This will not be supported in the future. To silence this " "warning, set kernel.sysctl_writes_strict = -1 ", current->comm, table->procname); } |
f5dd3d6fa
|
1777 1778 1779 1780 |
/** * proc_dostring - read a string sysctl * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
f5dd3d6fa
|
1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 |
* @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes a string from/to the user buffer. If the kernel * buffer provided is not large enough to hold the string, the * string is truncated. The copied string is %NULL-terminated. * If the string is being read by the user process, it is copied * and a newline ' ' is added. It is truncated if the buffer is * not large enough. * * Returns 0 on success. */ |
8d65af789
|
1795 |
int proc_dostring(struct ctl_table *table, int write, |
f5dd3d6fa
|
1796 1797 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
f4aacea2f
|
1798 1799 |
if (write && *ppos && sysctl_writes_strict == SYSCTL_WRITES_WARN) warn_sysctl_write(table); |
f88083005
|
1800 1801 |
return _proc_do_string((char *)(table->data), table->maxlen, write, (char __user *)buffer, lenp, ppos); |
f5dd3d6fa
|
1802 |
} |
00b7c3395
|
1803 1804 1805 1806 1807 1808 1809 1810 |
static size_t proc_skip_spaces(char **buf) { size_t ret; char *tmp = skip_spaces(*buf); ret = tmp - *buf; *buf = tmp; return ret; } |
9f977fb7a
|
1811 1812 1813 1814 1815 1816 1817 1818 1819 |
static void proc_skip_char(char **buf, size_t *size, const char v) { while (*size) { if (**buf != v) break; (*size)--; (*buf)++; } } |
00b7c3395
|
1820 1821 |
#define TMPBUFLEN 22 /** |
0fc377bd6
|
1822 |
* proc_get_long - reads an ASCII formatted integer from a user buffer |
00b7c3395
|
1823 |
* |
0fc377bd6
|
1824 1825 1826 1827 1828 1829 1830 |
* @buf: a kernel buffer * @size: size of the kernel buffer * @val: this is where the number will be stored * @neg: set to %TRUE if number is negative * @perm_tr: a vector which contains the allowed trailers * @perm_tr_len: size of the perm_tr vector * @tr: pointer to store the trailer character |
00b7c3395
|
1831 |
* |
0fc377bd6
|
1832 1833 1834 1835 |
* In case of success %0 is returned and @buf and @size are updated with * the amount of bytes read. If @tr is non-NULL and a trailing * character exists (size is non-zero after returning from this * function), @tr is updated with the trailing character. |
00b7c3395
|
1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 |
*/ static int proc_get_long(char **buf, size_t *size, unsigned long *val, bool *neg, const char *perm_tr, unsigned perm_tr_len, char *tr) { int len; char *p, tmp[TMPBUFLEN]; if (!*size) return -EINVAL; len = *size; if (len > TMPBUFLEN - 1) len = TMPBUFLEN - 1; memcpy(tmp, *buf, len); tmp[len] = 0; p = tmp; if (*p == '-' && *size > 1) { *neg = true; p++; } else *neg = false; if (!isdigit(*p)) return -EINVAL; *val = simple_strtoul(p, &p, 0); len = p - tmp; /* We don't know if the next char is whitespace thus we may accept * invalid integers (e.g. 1234...a) or two integers instead of one * (e.g. 123...1). So lets not allow such large numbers. */ if (len == TMPBUFLEN - 1) return -EINVAL; if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len)) return -EINVAL; |
1da177e4c
|
1875 |
|
00b7c3395
|
1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 |
if (tr && (len < *size)) *tr = *p; *buf += len; *size -= len; return 0; } /** |
0fc377bd6
|
1886 |
* proc_put_long - converts an integer to a decimal ASCII formatted string |
00b7c3395
|
1887 |
* |
0fc377bd6
|
1888 1889 1890 1891 |
* @buf: the user buffer * @size: the size of the user buffer * @val: the integer to be converted * @neg: sign of the number, %TRUE for negative |
00b7c3395
|
1892 |
* |
0fc377bd6
|
1893 1894 |
* In case of success %0 is returned and @buf and @size are updated with * the amount of bytes written. |
00b7c3395
|
1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 |
*/ static int proc_put_long(void __user **buf, size_t *size, unsigned long val, bool neg) { int len; char tmp[TMPBUFLEN], *p = tmp; sprintf(p, "%s%lu", neg ? "-" : "", val); len = strlen(tmp); if (len > *size) len = *size; if (copy_to_user(*buf, tmp, len)) return -EFAULT; *size -= len; *buf += len; return 0; } #undef TMPBUFLEN static int proc_put_char(void __user **buf, size_t *size, char c) { if (*size) { char __user **buffer = (char __user **)buf; if (put_user(c, *buffer)) return -EFAULT; (*size)--, (*buffer)++; *buf = *buffer; } return 0; } |
1da177e4c
|
1925 |
|
00b7c3395
|
1926 |
static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp, |
1da177e4c
|
1927 1928 1929 1930 1931 1932 1933 1934 |
int *valp, int write, void *data) { if (write) { *valp = *negp ? -*lvalp : *lvalp; } else { int val = *valp; if (val < 0) { |
00b7c3395
|
1935 |
*negp = true; |
1da177e4c
|
1936 1937 |
*lvalp = (unsigned long)-val; } else { |
00b7c3395
|
1938 |
*negp = false; |
1da177e4c
|
1939 1940 1941 1942 1943 |
*lvalp = (unsigned long)val; } } return 0; } |
00b7c3395
|
1944 1945 |
static const char proc_wspace_sep[] = { ' ', '\t', ' ' }; |
d8217f076
|
1946 |
static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, |
8d65af789
|
1947 |
int write, void __user *buffer, |
fcfbd547b
|
1948 |
size_t *lenp, loff_t *ppos, |
00b7c3395
|
1949 |
int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
1da177e4c
|
1950 1951 1952 |
int write, void *data), void *data) { |
00b7c3395
|
1953 1954 1955 1956 |
int *i, vleft, first = 1, err = 0; unsigned long page = 0; size_t left; char *kbuf; |
1da177e4c
|
1957 |
|
00b7c3395
|
1958 |
if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) { |
1da177e4c
|
1959 1960 1961 1962 |
*lenp = 0; return 0; } |
fcfbd547b
|
1963 |
i = (int *) tbl_data; |
1da177e4c
|
1964 1965 1966 1967 1968 |
vleft = table->maxlen / sizeof(*i); left = *lenp; if (!conv) conv = do_proc_dointvec_conv; |
00b7c3395
|
1969 |
if (write) { |
f4aacea2f
|
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 |
if (*ppos) { switch (sysctl_writes_strict) { case SYSCTL_WRITES_STRICT: goto out; case SYSCTL_WRITES_WARN: warn_sysctl_write(table); break; default: break; } } |
00b7c3395
|
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 |
if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; page = __get_free_page(GFP_TEMPORARY); kbuf = (char *) page; if (!kbuf) return -ENOMEM; if (copy_from_user(kbuf, buffer, left)) { err = -EFAULT; goto free; } kbuf[left] = 0; } |
1da177e4c
|
1993 |
for (; left && vleft--; i++, first=0) { |
00b7c3395
|
1994 1995 |
unsigned long lval; bool neg; |
1da177e4c
|
1996 |
|
00b7c3395
|
1997 1998 |
if (write) { left -= proc_skip_spaces(&kbuf); |
1da177e4c
|
1999 |
|
563b04671
|
2000 2001 |
if (!left) break; |
00b7c3395
|
2002 2003 2004 2005 |
err = proc_get_long(&kbuf, &left, &lval, &neg, proc_wspace_sep, sizeof(proc_wspace_sep), NULL); if (err) |
1da177e4c
|
2006 |
break; |
00b7c3395
|
2007 2008 |
if (conv(&neg, &lval, i, 1, data)) { err = -EINVAL; |
1da177e4c
|
2009 |
break; |
00b7c3395
|
2010 |
} |
1da177e4c
|
2011 |
} else { |
00b7c3395
|
2012 2013 2014 2015 |
if (conv(&neg, &lval, i, 0, data)) { err = -EINVAL; break; } |
1da177e4c
|
2016 |
if (!first) |
00b7c3395
|
2017 2018 2019 2020 2021 |
err = proc_put_char(&buffer, &left, '\t'); if (err) break; err = proc_put_long(&buffer, &left, lval, neg); if (err) |
1da177e4c
|
2022 |
break; |
1da177e4c
|
2023 2024 |
} } |
00b7c3395
|
2025 2026 2027 |
if (!write && !first && left && !err) err = proc_put_char(&buffer, &left, ' '); |
563b04671
|
2028 |
if (write && !err && left) |
00b7c3395
|
2029 2030 |
left -= proc_skip_spaces(&kbuf); free: |
1da177e4c
|
2031 |
if (write) { |
00b7c3395
|
2032 2033 2034 |
free_page(page); if (first) return err ? : -EINVAL; |
1da177e4c
|
2035 |
} |
1da177e4c
|
2036 |
*lenp -= left; |
f4aacea2f
|
2037 |
out: |
1da177e4c
|
2038 |
*ppos += *lenp; |
00b7c3395
|
2039 |
return err; |
1da177e4c
|
2040 |
} |
8d65af789
|
2041 |
static int do_proc_dointvec(struct ctl_table *table, int write, |
fcfbd547b
|
2042 |
void __user *buffer, size_t *lenp, loff_t *ppos, |
00b7c3395
|
2043 |
int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
fcfbd547b
|
2044 2045 2046 |
int write, void *data), void *data) { |
8d65af789
|
2047 |
return __do_proc_dointvec(table->data, table, write, |
fcfbd547b
|
2048 2049 |
buffer, lenp, ppos, conv, data); } |
1da177e4c
|
2050 2051 2052 2053 |
/** * proc_dointvec - read a vector of integers * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2054 2055 2056 2057 2058 2059 2060 2061 2062 |
* @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * * Returns 0 on success. */ |
8d65af789
|
2063 |
int proc_dointvec(struct ctl_table *table, int write, |
1da177e4c
|
2064 2065 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
8d65af789
|
2066 |
return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4c
|
2067 2068 |
NULL,NULL); } |
34f5a3989
|
2069 |
/* |
25ddbb18a
|
2070 2071 |
* Taint values can only be increased * This means we can safely use a temporary. |
34f5a3989
|
2072 |
*/ |
8d65af789
|
2073 |
static int proc_taint(struct ctl_table *table, int write, |
34f5a3989
|
2074 2075 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
25ddbb18a
|
2076 2077 2078 |
struct ctl_table t; unsigned long tmptaint = get_taint(); int err; |
34f5a3989
|
2079 |
|
91fcd412e
|
2080 |
if (write && !capable(CAP_SYS_ADMIN)) |
34f5a3989
|
2081 |
return -EPERM; |
25ddbb18a
|
2082 2083 |
t = *table; t.data = &tmptaint; |
8d65af789
|
2084 |
err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos); |
25ddbb18a
|
2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 |
if (err < 0) return err; if (write) { /* * Poor man's atomic or. Not worth adding a primitive * to everyone's atomic.h for this */ int i; for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) { if ((tmptaint >> i) & 1) |
373d4d099
|
2096 |
add_taint(i, LOCKDEP_STILL_OK); |
25ddbb18a
|
2097 2098 2099 2100 |
} } return err; |
34f5a3989
|
2101 |
} |
bfdc0b497
|
2102 |
#ifdef CONFIG_PRINTK |
620f6e8e8
|
2103 |
static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
bfdc0b497
|
2104 2105 2106 2107 2108 2109 2110 2111 |
void __user *buffer, size_t *lenp, loff_t *ppos) { if (write && !capable(CAP_SYS_ADMIN)) return -EPERM; return proc_dointvec_minmax(table, write, buffer, lenp, ppos); } #endif |
1da177e4c
|
2112 2113 2114 2115 |
struct do_proc_dointvec_minmax_conv_param { int *min; int *max; }; |
00b7c3395
|
2116 2117 |
static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp, int *valp, |
1da177e4c
|
2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 |
int write, void *data) { struct do_proc_dointvec_minmax_conv_param *param = data; if (write) { int val = *negp ? -*lvalp : *lvalp; if ((param->min && *param->min > val) || (param->max && *param->max < val)) return -EINVAL; *valp = val; } else { int val = *valp; if (val < 0) { |
00b7c3395
|
2130 |
*negp = true; |
1da177e4c
|
2131 2132 |
*lvalp = (unsigned long)-val; } else { |
00b7c3395
|
2133 |
*negp = false; |
1da177e4c
|
2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 |
*lvalp = (unsigned long)val; } } return 0; } /** * proc_dointvec_minmax - read a vector of integers with min/max values * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 |
* @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * * This routine will ensure the values are within the range specified by * table->extra1 (min) and table->extra2 (max). * * Returns 0 on success. */ |
8d65af789
|
2156 |
int proc_dointvec_minmax(struct ctl_table *table, int write, |
1da177e4c
|
2157 2158 2159 2160 2161 2162 |
void __user *buffer, size_t *lenp, loff_t *ppos) { struct do_proc_dointvec_minmax_conv_param param = { .min = (int *) table->extra1, .max = (int *) table->extra2, }; |
8d65af789
|
2163 |
return do_proc_dointvec(table, write, buffer, lenp, ppos, |
1da177e4c
|
2164 2165 |
do_proc_dointvec_minmax_conv, ¶m); } |
54b501992
|
2166 2167 |
static void validate_coredump_safety(void) { |
046d662f4
|
2168 |
#ifdef CONFIG_COREDUMP |
e579d2c25
|
2169 |
if (suid_dumpable == SUID_DUMP_ROOT && |
54b501992
|
2170 2171 2172 2173 2174 2175 |
core_pattern[0] != '/' && core_pattern[0] != '|') { printk(KERN_WARNING "Unsafe core_pattern used with "\ "suid_dumpable=2. Pipe handler or fully qualified "\ "core dump path required. "); } |
046d662f4
|
2176 |
#endif |
54b501992
|
2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 |
} static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos); if (!error) validate_coredump_safety(); return error; } |
046d662f4
|
2187 |
#ifdef CONFIG_COREDUMP |
54b501992
|
2188 2189 2190 2191 2192 2193 2194 2195 |
static int proc_dostring_coredump(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int error = proc_dostring(table, write, buffer, lenp, ppos); if (!error) validate_coredump_safety(); return error; } |
046d662f4
|
2196 |
#endif |
54b501992
|
2197 |
|
d8217f076
|
2198 |
static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, |
1da177e4c
|
2199 2200 2201 2202 2203 |
void __user *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { |
00b7c3395
|
2204 2205 2206 2207 2208 2209 2210 |
unsigned long *i, *min, *max; int vleft, first = 1, err = 0; unsigned long page = 0; size_t left; char *kbuf; if (!data || !table->maxlen || !*lenp || (*ppos && !write)) { |
1da177e4c
|
2211 2212 2213 |
*lenp = 0; return 0; } |
00b7c3395
|
2214 |
|
fcfbd547b
|
2215 |
i = (unsigned long *) data; |
1da177e4c
|
2216 2217 2218 2219 |
min = (unsigned long *) table->extra1; max = (unsigned long *) table->extra2; vleft = table->maxlen / sizeof(unsigned long); left = *lenp; |
00b7c3395
|
2220 2221 |
if (write) { |
f4aacea2f
|
2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 |
if (*ppos) { switch (sysctl_writes_strict) { case SYSCTL_WRITES_STRICT: goto out; case SYSCTL_WRITES_WARN: warn_sysctl_write(table); break; default: break; } } |
00b7c3395
|
2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 |
if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; page = __get_free_page(GFP_TEMPORARY); kbuf = (char *) page; if (!kbuf) return -ENOMEM; if (copy_from_user(kbuf, buffer, left)) { err = -EFAULT; goto free; } kbuf[left] = 0; } |
27b3d80a7
|
2245 |
for (; left && vleft--; i++, first = 0) { |
00b7c3395
|
2246 |
unsigned long val; |
1da177e4c
|
2247 |
if (write) { |
00b7c3395
|
2248 2249 2250 2251 2252 2253 2254 2255 |
bool neg; left -= proc_skip_spaces(&kbuf); err = proc_get_long(&kbuf, &left, &val, &neg, proc_wspace_sep, sizeof(proc_wspace_sep), NULL); if (err) |
1da177e4c
|
2256 2257 |
break; if (neg) |
1da177e4c
|
2258 2259 2260 2261 2262 |
continue; if ((min && val < *min) || (max && val > *max)) continue; *i = val; } else { |
00b7c3395
|
2263 |
val = convdiv * (*i) / convmul; |
7833819d2
|
2264 |
if (!first) { |
00b7c3395
|
2265 |
err = proc_put_char(&buffer, &left, '\t'); |
7833819d2
|
2266 2267 2268 |
if (err) break; } |
00b7c3395
|
2269 2270 2271 |
err = proc_put_long(&buffer, &left, val, false); if (err) break; |
1da177e4c
|
2272 2273 |
} } |
00b7c3395
|
2274 2275 2276 2277 2278 2279 |
if (!write && !first && left && !err) err = proc_put_char(&buffer, &left, ' '); if (write && !err) left -= proc_skip_spaces(&kbuf); free: |
1da177e4c
|
2280 |
if (write) { |
00b7c3395
|
2281 2282 2283 |
free_page(page); if (first) return err ? : -EINVAL; |
1da177e4c
|
2284 |
} |
1da177e4c
|
2285 |
*lenp -= left; |
f4aacea2f
|
2286 |
out: |
1da177e4c
|
2287 |
*ppos += *lenp; |
00b7c3395
|
2288 |
return err; |
1da177e4c
|
2289 |
} |
d8217f076
|
2290 |
static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, |
fcfbd547b
|
2291 2292 2293 2294 2295 2296 |
void __user *buffer, size_t *lenp, loff_t *ppos, unsigned long convmul, unsigned long convdiv) { return __do_proc_doulongvec_minmax(table->data, table, write, |
8d65af789
|
2297 |
buffer, lenp, ppos, convmul, convdiv); |
fcfbd547b
|
2298 |
} |
1da177e4c
|
2299 2300 2301 2302 |
/** * proc_doulongvec_minmax - read a vector of long integers with min/max values * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 |
* @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long * values from/to the user buffer, treated as an ASCII string. * * This routine will ensure the values are within the range specified by * table->extra1 (min) and table->extra2 (max). * * Returns 0 on success. */ |
8d65af789
|
2315 |
int proc_doulongvec_minmax(struct ctl_table *table, int write, |
1da177e4c
|
2316 2317 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
8d65af789
|
2318 |
return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l); |
1da177e4c
|
2319 2320 2321 2322 2323 2324 |
} /** * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 |
* @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long * values from/to the user buffer, treated as an ASCII string. The values * are treated as milliseconds, and converted to jiffies when they are stored. * * This routine will ensure the values are within the range specified by * table->extra1 (min) and table->extra2 (max). * * Returns 0 on success. */ |
d8217f076
|
2338 |
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4c
|
2339 2340 2341 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
8d65af789
|
2342 |
return do_proc_doulongvec_minmax(table, write, buffer, |
1da177e4c
|
2343 2344 |
lenp, ppos, HZ, 1000l); } |
00b7c3395
|
2345 |
static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4c
|
2346 2347 2348 2349 |
int *valp, int write, void *data) { if (write) { |
cba9f33d1
|
2350 2351 |
if (*lvalp > LONG_MAX / HZ) return 1; |
1da177e4c
|
2352 2353 2354 2355 2356 |
*valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ); } else { int val = *valp; unsigned long lval; if (val < 0) { |
00b7c3395
|
2357 |
*negp = true; |
1da177e4c
|
2358 2359 |
lval = (unsigned long)-val; } else { |
00b7c3395
|
2360 |
*negp = false; |
1da177e4c
|
2361 2362 2363 2364 2365 2366 |
lval = (unsigned long)val; } *lvalp = lval / HZ; } return 0; } |
00b7c3395
|
2367 |
static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4c
|
2368 2369 2370 2371 |
int *valp, int write, void *data) { if (write) { |
cba9f33d1
|
2372 2373 |
if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ) return 1; |
1da177e4c
|
2374 2375 2376 2377 2378 |
*valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp); } else { int val = *valp; unsigned long lval; if (val < 0) { |
00b7c3395
|
2379 |
*negp = true; |
1da177e4c
|
2380 2381 |
lval = (unsigned long)-val; } else { |
00b7c3395
|
2382 |
*negp = false; |
1da177e4c
|
2383 2384 2385 2386 2387 2388 |
lval = (unsigned long)val; } *lvalp = jiffies_to_clock_t(lval); } return 0; } |
00b7c3395
|
2389 |
static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4c
|
2390 2391 2392 2393 |
int *valp, int write, void *data) { if (write) { |
d738ce8fd
|
2394 2395 2396 2397 2398 |
unsigned long jif = msecs_to_jiffies(*negp ? -*lvalp : *lvalp); if (jif > INT_MAX) return 1; *valp = (int)jif; |
1da177e4c
|
2399 2400 2401 2402 |
} else { int val = *valp; unsigned long lval; if (val < 0) { |
00b7c3395
|
2403 |
*negp = true; |
1da177e4c
|
2404 2405 |
lval = (unsigned long)-val; } else { |
00b7c3395
|
2406 |
*negp = false; |
1da177e4c
|
2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 |
lval = (unsigned long)val; } *lvalp = jiffies_to_msecs(lval); } return 0; } /** * proc_dointvec_jiffies - read a vector of integers as seconds * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 |
* @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * The values read are assumed to be in seconds, and are converted into * jiffies. * * Returns 0 on success. */ |
8d65af789
|
2429 |
int proc_dointvec_jiffies(struct ctl_table *table, int write, |
1da177e4c
|
2430 2431 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
8d65af789
|
2432 |
return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4c
|
2433 2434 2435 2436 2437 2438 2439 |
do_proc_dointvec_jiffies_conv,NULL); } /** * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2440 2441 |
* @buffer: the user buffer * @lenp: the size of the user buffer |
1e5d53314
|
2442 |
* @ppos: pointer to the file position |
1da177e4c
|
2443 2444 2445 2446 2447 2448 2449 2450 |
* * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * The values read are assumed to be in 1/USER_HZ seconds, and * are converted into jiffies. * * Returns 0 on success. */ |
8d65af789
|
2451 |
int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
1da177e4c
|
2452 2453 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
8d65af789
|
2454 |
return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4c
|
2455 2456 2457 2458 2459 2460 2461 |
do_proc_dointvec_userhz_jiffies_conv,NULL); } /** * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file |
1da177e4c
|
2462 2463 |
* @buffer: the user buffer * @lenp: the size of the user buffer |
67be2dd1b
|
2464 2465 |
* @ppos: file position * @ppos: the current position in the file |
1da177e4c
|
2466 2467 2468 2469 2470 2471 2472 2473 |
* * Reads/writes up to table->maxlen/sizeof(unsigned int) integer * values from/to the user buffer, treated as an ASCII string. * The values read are assumed to be in 1/1000 seconds, and * are converted into jiffies. * * Returns 0 on success. */ |
8d65af789
|
2474 |
int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
1da177e4c
|
2475 2476 |
void __user *buffer, size_t *lenp, loff_t *ppos) { |
8d65af789
|
2477 |
return do_proc_dointvec(table, write, buffer, lenp, ppos, |
1da177e4c
|
2478 2479 |
do_proc_dointvec_ms_jiffies_conv, NULL); } |
8d65af789
|
2480 |
static int proc_do_cad_pid(struct ctl_table *table, int write, |
9ec52099e
|
2481 2482 2483 2484 2485 |
void __user *buffer, size_t *lenp, loff_t *ppos) { struct pid *new_pid; pid_t tmp; int r; |
6c5f3e7b4
|
2486 |
tmp = pid_vnr(cad_pid); |
9ec52099e
|
2487 |
|
8d65af789
|
2488 |
r = __do_proc_dointvec(&tmp, table, write, buffer, |
9ec52099e
|
2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 |
lenp, ppos, NULL, NULL); if (r || !write) return r; new_pid = find_get_pid(tmp); if (!new_pid) return -ESRCH; put_pid(xchg(&cad_pid, new_pid)); return 0; } |
9f977fb7a
|
2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 |
/** * proc_do_large_bitmap - read/write from/to a large bitmap * @table: the sysctl table * @write: %TRUE if this is a write to the sysctl file * @buffer: the user buffer * @lenp: the size of the user buffer * @ppos: file position * * The bitmap is stored at table->data and the bitmap length (in bits) * in table->maxlen. * * We use a range comma separated format (e.g. 1,3-4,10-10) so that * large bitmaps may be represented in a compact manner. Writing into * the file will clear the bitmap then update it with the given input. * * Returns 0 on success. */ int proc_do_large_bitmap(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int err = 0; bool first = 1; size_t left = *lenp; unsigned long bitmap_len = table->maxlen; |
122ff243f
|
2524 |
unsigned long *bitmap = *(unsigned long **) table->data; |
9f977fb7a
|
2525 2526 2527 2528 |
unsigned long *tmp_bitmap = NULL; char tr_a[] = { '-', ',', ' ' }, tr_b[] = { ',', ' ', 0 }, c; |
122ff243f
|
2529 |
if (!bitmap || !bitmap_len || !left || (*ppos && !write)) { |
9f977fb7a
|
2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 |
*lenp = 0; return 0; } if (write) { unsigned long page = 0; char *kbuf; if (left > PAGE_SIZE - 1) left = PAGE_SIZE - 1; page = __get_free_page(GFP_TEMPORARY); kbuf = (char *) page; if (!kbuf) return -ENOMEM; if (copy_from_user(kbuf, buffer, left)) { free_page(page); return -EFAULT; } kbuf[left] = 0; tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long), GFP_KERNEL); if (!tmp_bitmap) { free_page(page); return -ENOMEM; } proc_skip_char(&kbuf, &left, ' '); while (!err && left) { unsigned long val_a, val_b; bool neg; err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a, sizeof(tr_a), &c); if (err) break; if (val_a >= bitmap_len || neg) { err = -EINVAL; break; } val_b = val_a; if (left) { kbuf++; left--; } if (c == '-') { err = proc_get_long(&kbuf, &left, &val_b, &neg, tr_b, sizeof(tr_b), &c); if (err) break; if (val_b >= bitmap_len || neg || val_a > val_b) { err = -EINVAL; break; } if (left) { kbuf++; left--; } } |
5a04cca6c
|
2594 |
bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1); |
9f977fb7a
|
2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 |
first = 0; proc_skip_char(&kbuf, &left, ' '); } free_page(page); } else { unsigned long bit_a, bit_b = 0; while (left) { bit_a = find_next_bit(bitmap, bitmap_len, bit_b); if (bit_a >= bitmap_len) break; bit_b = find_next_zero_bit(bitmap, bitmap_len, bit_a + 1) - 1; if (!first) { err = proc_put_char(&buffer, &left, ','); if (err) break; } err = proc_put_long(&buffer, &left, bit_a, false); if (err) break; if (bit_a != bit_b) { err = proc_put_char(&buffer, &left, '-'); if (err) break; err = proc_put_long(&buffer, &left, bit_b, false); if (err) break; } first = 0; bit_b++; } if (!err) err = proc_put_char(&buffer, &left, ' '); } if (!err) { if (write) { if (*ppos) bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len); else |
5a04cca6c
|
2639 |
bitmap_copy(bitmap, tmp_bitmap, bitmap_len); |
9f977fb7a
|
2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 |
} kfree(tmp_bitmap); *lenp -= left; *ppos += *lenp; return 0; } else { kfree(tmp_bitmap); return err; } } |
556105000
|
2650 |
#else /* CONFIG_PROC_SYSCTL */ |
1da177e4c
|
2651 |
|
8d65af789
|
2652 |
int proc_dostring(struct ctl_table *table, int write, |
1da177e4c
|
2653 2654 2655 2656 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
8d65af789
|
2657 |
int proc_dointvec(struct ctl_table *table, int write, |
1da177e4c
|
2658 |
void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4c
|
2659 2660 2661 |
{ return -ENOSYS; } |
8d65af789
|
2662 |
int proc_dointvec_minmax(struct ctl_table *table, int write, |
1da177e4c
|
2663 2664 2665 2666 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
8d65af789
|
2667 |
int proc_dointvec_jiffies(struct ctl_table *table, int write, |
1da177e4c
|
2668 2669 2670 2671 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
8d65af789
|
2672 |
int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
1da177e4c
|
2673 2674 2675 2676 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
8d65af789
|
2677 |
int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
1da177e4c
|
2678 2679 2680 2681 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
8d65af789
|
2682 |
int proc_doulongvec_minmax(struct ctl_table *table, int write, |
1da177e4c
|
2683 2684 2685 2686 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
d8217f076
|
2687 |
int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4c
|
2688 2689 2690 2691 2692 |
void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; } |
556105000
|
2693 |
#endif /* CONFIG_PROC_SYSCTL */ |
1da177e4c
|
2694 |
|
1da177e4c
|
2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 |
/* * No sense putting this after each symbol definition, twice, * exception granted :-) */ EXPORT_SYMBOL(proc_dointvec); EXPORT_SYMBOL(proc_dointvec_jiffies); EXPORT_SYMBOL(proc_dointvec_minmax); EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); EXPORT_SYMBOL(proc_dointvec_ms_jiffies); EXPORT_SYMBOL(proc_dostring); EXPORT_SYMBOL(proc_doulongvec_minmax); EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax); |