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Source at commit cdde9cf73945d547acd3e96f9508c79e84ad0bf1 created 12 years 9 months ago. By Maarten ter Huurne, MMC: JZ4740: Added support for CPU frequency changing | |
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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 | |
21 | #include <linux/module.h> |
22 | #include <linux/mm.h> |
23 | #include <linux/swap.h> |
24 | #include <linux/slab.h> |
25 | #include <linux/sysctl.h> |
26 | #include <linux/bitmap.h> |
27 | #include <linux/signal.h> |
28 | #include <linux/printk.h> |
29 | #include <linux/proc_fs.h> |
30 | #include <linux/security.h> |
31 | #include <linux/ctype.h> |
32 | #include <linux/kmemcheck.h> |
33 | #include <linux/kmemleak.h> |
34 | #include <linux/fs.h> |
35 | #include <linux/init.h> |
36 | #include <linux/kernel.h> |
37 | #include <linux/kobject.h> |
38 | #include <linux/net.h> |
39 | #include <linux/sysrq.h> |
40 | #include <linux/highuid.h> |
41 | #include <linux/writeback.h> |
42 | #include <linux/ratelimit.h> |
43 | #include <linux/compaction.h> |
44 | #include <linux/hugetlb.h> |
45 | #include <linux/initrd.h> |
46 | #include <linux/key.h> |
47 | #include <linux/times.h> |
48 | #include <linux/limits.h> |
49 | #include <linux/dcache.h> |
50 | #include <linux/dnotify.h> |
51 | #include <linux/syscalls.h> |
52 | #include <linux/vmstat.h> |
53 | #include <linux/nfs_fs.h> |
54 | #include <linux/acpi.h> |
55 | #include <linux/reboot.h> |
56 | #include <linux/ftrace.h> |
57 | #include <linux/perf_event.h> |
58 | #include <linux/kprobes.h> |
59 | #include <linux/pipe_fs_i.h> |
60 | #include <linux/oom.h> |
61 | #include <linux/kmod.h> |
62 | #include <linux/capability.h> |
63 | #include <linux/binfmts.h> |
64 | |
65 | #include <asm/uaccess.h> |
66 | #include <asm/processor.h> |
67 | |
68 | #ifdef CONFIG_X86 |
69 | #include <asm/nmi.h> |
70 | #include <asm/stacktrace.h> |
71 | #include <asm/io.h> |
72 | #endif |
73 | #ifdef CONFIG_SPARC |
74 | #include <asm/setup.h> |
75 | #endif |
76 | #ifdef CONFIG_BSD_PROCESS_ACCT |
77 | #include <linux/acct.h> |
78 | #endif |
79 | #ifdef CONFIG_RT_MUTEXES |
80 | #include <linux/rtmutex.h> |
81 | #endif |
82 | #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT) |
83 | #include <linux/lockdep.h> |
84 | #endif |
85 | #ifdef CONFIG_CHR_DEV_SG |
86 | #include <scsi/sg.h> |
87 | #endif |
88 | |
89 | #ifdef CONFIG_LOCKUP_DETECTOR |
90 | #include <linux/nmi.h> |
91 | #endif |
92 | |
93 | |
94 | #if defined(CONFIG_SYSCTL) |
95 | |
96 | /* External variables not in a header file. */ |
97 | extern int sysctl_overcommit_memory; |
98 | extern int sysctl_overcommit_ratio; |
99 | extern int max_threads; |
100 | extern int core_uses_pid; |
101 | extern int suid_dumpable; |
102 | extern char core_pattern[]; |
103 | extern unsigned int core_pipe_limit; |
104 | extern int pid_max; |
105 | extern int min_free_kbytes; |
106 | extern int pid_max_min, pid_max_max; |
107 | extern int sysctl_drop_caches; |
108 | extern int percpu_pagelist_fraction; |
109 | extern int compat_log; |
110 | extern int latencytop_enabled; |
111 | extern int sysctl_nr_open_min, sysctl_nr_open_max; |
112 | #ifndef CONFIG_MMU |
113 | extern int sysctl_nr_trim_pages; |
114 | #endif |
115 | #ifdef CONFIG_BLOCK |
116 | extern int blk_iopoll_enabled; |
117 | #endif |
118 | |
119 | /* Constants used for minimum and maximum */ |
120 | #ifdef CONFIG_LOCKUP_DETECTOR |
121 | static int sixty = 60; |
122 | static int neg_one = -1; |
123 | #endif |
124 | |
125 | static int zero; |
126 | static int __maybe_unused one = 1; |
127 | static int __maybe_unused two = 2; |
128 | static int __maybe_unused three = 3; |
129 | static unsigned long one_ul = 1; |
130 | static int one_hundred = 100; |
131 | #ifdef CONFIG_PRINTK |
132 | static int ten_thousand = 10000; |
133 | #endif |
134 | |
135 | /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */ |
136 | static unsigned long dirty_bytes_min = 2 * PAGE_SIZE; |
137 | |
138 | /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */ |
139 | static int maxolduid = 65535; |
140 | static int minolduid; |
141 | static int min_percpu_pagelist_fract = 8; |
142 | |
143 | static int ngroups_max = NGROUPS_MAX; |
144 | static const int cap_last_cap = CAP_LAST_CAP; |
145 | |
146 | #ifdef CONFIG_INOTIFY_USER |
147 | #include <linux/inotify.h> |
148 | #endif |
149 | #ifdef CONFIG_SPARC |
150 | #endif |
151 | |
152 | #ifdef CONFIG_SPARC64 |
153 | extern int sysctl_tsb_ratio; |
154 | #endif |
155 | |
156 | #ifdef __hppa__ |
157 | extern int pwrsw_enabled; |
158 | extern int unaligned_enabled; |
159 | #endif |
160 | |
161 | #ifdef CONFIG_IA64 |
162 | extern int no_unaligned_warning; |
163 | extern int unaligned_dump_stack; |
164 | #endif |
165 | |
166 | #ifdef CONFIG_PROC_SYSCTL |
167 | static int proc_do_cad_pid(struct ctl_table *table, int write, |
168 | void __user *buffer, size_t *lenp, loff_t *ppos); |
169 | static int proc_taint(struct ctl_table *table, int write, |
170 | void __user *buffer, size_t *lenp, loff_t *ppos); |
171 | #endif |
172 | |
173 | #ifdef CONFIG_PRINTK |
174 | static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
175 | void __user *buffer, size_t *lenp, loff_t *ppos); |
176 | #endif |
177 | |
178 | static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, |
179 | void __user *buffer, size_t *lenp, loff_t *ppos); |
180 | static int proc_dostring_coredump(struct ctl_table *table, int write, |
181 | void __user *buffer, size_t *lenp, loff_t *ppos); |
182 | |
183 | #ifdef CONFIG_MAGIC_SYSRQ |
184 | /* Note: sysrq code uses it's own private copy */ |
185 | static int __sysrq_enabled = SYSRQ_DEFAULT_ENABLE; |
186 | |
187 | static int sysrq_sysctl_handler(ctl_table *table, int write, |
188 | void __user *buffer, size_t *lenp, |
189 | loff_t *ppos) |
190 | { |
191 | int error; |
192 | |
193 | error = proc_dointvec(table, write, buffer, lenp, ppos); |
194 | if (error) |
195 | return error; |
196 | |
197 | if (write) |
198 | sysrq_toggle_support(__sysrq_enabled); |
199 | |
200 | return 0; |
201 | } |
202 | |
203 | #endif |
204 | |
205 | static struct ctl_table kern_table[]; |
206 | static struct ctl_table vm_table[]; |
207 | static struct ctl_table fs_table[]; |
208 | static struct ctl_table debug_table[]; |
209 | static struct ctl_table dev_table[]; |
210 | extern struct ctl_table random_table[]; |
211 | #ifdef CONFIG_EPOLL |
212 | extern struct ctl_table epoll_table[]; |
213 | #endif |
214 | |
215 | #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT |
216 | int sysctl_legacy_va_layout; |
217 | #endif |
218 | |
219 | /* The default sysctl tables: */ |
220 | |
221 | static struct ctl_table sysctl_base_table[] = { |
222 | { |
223 | .procname = "kernel", |
224 | .mode = 0555, |
225 | .child = kern_table, |
226 | }, |
227 | { |
228 | .procname = "vm", |
229 | .mode = 0555, |
230 | .child = vm_table, |
231 | }, |
232 | { |
233 | .procname = "fs", |
234 | .mode = 0555, |
235 | .child = fs_table, |
236 | }, |
237 | { |
238 | .procname = "debug", |
239 | .mode = 0555, |
240 | .child = debug_table, |
241 | }, |
242 | { |
243 | .procname = "dev", |
244 | .mode = 0555, |
245 | .child = dev_table, |
246 | }, |
247 | { } |
248 | }; |
249 | |
250 | #ifdef CONFIG_SCHED_DEBUG |
251 | static int min_sched_granularity_ns = 100000; /* 100 usecs */ |
252 | static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */ |
253 | static int min_wakeup_granularity_ns; /* 0 usecs */ |
254 | static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */ |
255 | static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE; |
256 | static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1; |
257 | #endif |
258 | |
259 | #ifdef CONFIG_COMPACTION |
260 | static int min_extfrag_threshold; |
261 | static int max_extfrag_threshold = 1000; |
262 | #endif |
263 | |
264 | static struct ctl_table kern_table[] = { |
265 | { |
266 | .procname = "sched_child_runs_first", |
267 | .data = &sysctl_sched_child_runs_first, |
268 | .maxlen = sizeof(unsigned int), |
269 | .mode = 0644, |
270 | .proc_handler = proc_dointvec, |
271 | }, |
272 | #ifdef CONFIG_SCHED_DEBUG |
273 | { |
274 | .procname = "sched_min_granularity_ns", |
275 | .data = &sysctl_sched_min_granularity, |
276 | .maxlen = sizeof(unsigned int), |
277 | .mode = 0644, |
278 | .proc_handler = sched_proc_update_handler, |
279 | .extra1 = &min_sched_granularity_ns, |
280 | .extra2 = &max_sched_granularity_ns, |
281 | }, |
282 | { |
283 | .procname = "sched_latency_ns", |
284 | .data = &sysctl_sched_latency, |
285 | .maxlen = sizeof(unsigned int), |
286 | .mode = 0644, |
287 | .proc_handler = sched_proc_update_handler, |
288 | .extra1 = &min_sched_granularity_ns, |
289 | .extra2 = &max_sched_granularity_ns, |
290 | }, |
291 | { |
292 | .procname = "sched_wakeup_granularity_ns", |
293 | .data = &sysctl_sched_wakeup_granularity, |
294 | .maxlen = sizeof(unsigned int), |
295 | .mode = 0644, |
296 | .proc_handler = sched_proc_update_handler, |
297 | .extra1 = &min_wakeup_granularity_ns, |
298 | .extra2 = &max_wakeup_granularity_ns, |
299 | }, |
300 | { |
301 | .procname = "sched_tunable_scaling", |
302 | .data = &sysctl_sched_tunable_scaling, |
303 | .maxlen = sizeof(enum sched_tunable_scaling), |
304 | .mode = 0644, |
305 | .proc_handler = sched_proc_update_handler, |
306 | .extra1 = &min_sched_tunable_scaling, |
307 | .extra2 = &max_sched_tunable_scaling, |
308 | }, |
309 | { |
310 | .procname = "sched_migration_cost", |
311 | .data = &sysctl_sched_migration_cost, |
312 | .maxlen = sizeof(unsigned int), |
313 | .mode = 0644, |
314 | .proc_handler = proc_dointvec, |
315 | }, |
316 | { |
317 | .procname = "sched_nr_migrate", |
318 | .data = &sysctl_sched_nr_migrate, |
319 | .maxlen = sizeof(unsigned int), |
320 | .mode = 0644, |
321 | .proc_handler = proc_dointvec, |
322 | }, |
323 | { |
324 | .procname = "sched_time_avg", |
325 | .data = &sysctl_sched_time_avg, |
326 | .maxlen = sizeof(unsigned int), |
327 | .mode = 0644, |
328 | .proc_handler = proc_dointvec, |
329 | }, |
330 | { |
331 | .procname = "sched_shares_window", |
332 | .data = &sysctl_sched_shares_window, |
333 | .maxlen = sizeof(unsigned int), |
334 | .mode = 0644, |
335 | .proc_handler = proc_dointvec, |
336 | }, |
337 | { |
338 | .procname = "timer_migration", |
339 | .data = &sysctl_timer_migration, |
340 | .maxlen = sizeof(unsigned int), |
341 | .mode = 0644, |
342 | .proc_handler = proc_dointvec_minmax, |
343 | .extra1 = &zero, |
344 | .extra2 = &one, |
345 | }, |
346 | #endif |
347 | { |
348 | .procname = "sched_rt_period_us", |
349 | .data = &sysctl_sched_rt_period, |
350 | .maxlen = sizeof(unsigned int), |
351 | .mode = 0644, |
352 | .proc_handler = sched_rt_handler, |
353 | }, |
354 | { |
355 | .procname = "sched_rt_runtime_us", |
356 | .data = &sysctl_sched_rt_runtime, |
357 | .maxlen = sizeof(int), |
358 | .mode = 0644, |
359 | .proc_handler = sched_rt_handler, |
360 | }, |
361 | #ifdef CONFIG_SCHED_AUTOGROUP |
362 | { |
363 | .procname = "sched_autogroup_enabled", |
364 | .data = &sysctl_sched_autogroup_enabled, |
365 | .maxlen = sizeof(unsigned int), |
366 | .mode = 0644, |
367 | .proc_handler = proc_dointvec_minmax, |
368 | .extra1 = &zero, |
369 | .extra2 = &one, |
370 | }, |
371 | #endif |
372 | #ifdef CONFIG_CFS_BANDWIDTH |
373 | { |
374 | .procname = "sched_cfs_bandwidth_slice_us", |
375 | .data = &sysctl_sched_cfs_bandwidth_slice, |
376 | .maxlen = sizeof(unsigned int), |
377 | .mode = 0644, |
378 | .proc_handler = proc_dointvec_minmax, |
379 | .extra1 = &one, |
380 | }, |
381 | #endif |
382 | #ifdef CONFIG_PROVE_LOCKING |
383 | { |
384 | .procname = "prove_locking", |
385 | .data = &prove_locking, |
386 | .maxlen = sizeof(int), |
387 | .mode = 0644, |
388 | .proc_handler = proc_dointvec, |
389 | }, |
390 | #endif |
391 | #ifdef CONFIG_LOCK_STAT |
392 | { |
393 | .procname = "lock_stat", |
394 | .data = &lock_stat, |
395 | .maxlen = sizeof(int), |
396 | .mode = 0644, |
397 | .proc_handler = proc_dointvec, |
398 | }, |
399 | #endif |
400 | { |
401 | .procname = "panic", |
402 | .data = &panic_timeout, |
403 | .maxlen = sizeof(int), |
404 | .mode = 0644, |
405 | .proc_handler = proc_dointvec, |
406 | }, |
407 | { |
408 | .procname = "core_uses_pid", |
409 | .data = &core_uses_pid, |
410 | .maxlen = sizeof(int), |
411 | .mode = 0644, |
412 | .proc_handler = proc_dointvec, |
413 | }, |
414 | { |
415 | .procname = "core_pattern", |
416 | .data = core_pattern, |
417 | .maxlen = CORENAME_MAX_SIZE, |
418 | .mode = 0644, |
419 | .proc_handler = proc_dostring_coredump, |
420 | }, |
421 | { |
422 | .procname = "core_pipe_limit", |
423 | .data = &core_pipe_limit, |
424 | .maxlen = sizeof(unsigned int), |
425 | .mode = 0644, |
426 | .proc_handler = proc_dointvec, |
427 | }, |
428 | #ifdef CONFIG_PROC_SYSCTL |
429 | { |
430 | .procname = "tainted", |
431 | .maxlen = sizeof(long), |
432 | .mode = 0644, |
433 | .proc_handler = proc_taint, |
434 | }, |
435 | #endif |
436 | #ifdef CONFIG_LATENCYTOP |
437 | { |
438 | .procname = "latencytop", |
439 | .data = &latencytop_enabled, |
440 | .maxlen = sizeof(int), |
441 | .mode = 0644, |
442 | .proc_handler = proc_dointvec, |
443 | }, |
444 | #endif |
445 | #ifdef CONFIG_BLK_DEV_INITRD |
446 | { |
447 | .procname = "real-root-dev", |
448 | .data = &real_root_dev, |
449 | .maxlen = sizeof(int), |
450 | .mode = 0644, |
451 | .proc_handler = proc_dointvec, |
452 | }, |
453 | #endif |
454 | { |
455 | .procname = "print-fatal-signals", |
456 | .data = &print_fatal_signals, |
457 | .maxlen = sizeof(int), |
458 | .mode = 0644, |
459 | .proc_handler = proc_dointvec, |
460 | }, |
461 | #ifdef CONFIG_SPARC |
462 | { |
463 | .procname = "reboot-cmd", |
464 | .data = reboot_command, |
465 | .maxlen = 256, |
466 | .mode = 0644, |
467 | .proc_handler = proc_dostring, |
468 | }, |
469 | { |
470 | .procname = "stop-a", |
471 | .data = &stop_a_enabled, |
472 | .maxlen = sizeof (int), |
473 | .mode = 0644, |
474 | .proc_handler = proc_dointvec, |
475 | }, |
476 | { |
477 | .procname = "scons-poweroff", |
478 | .data = &scons_pwroff, |
479 | .maxlen = sizeof (int), |
480 | .mode = 0644, |
481 | .proc_handler = proc_dointvec, |
482 | }, |
483 | #endif |
484 | #ifdef CONFIG_SPARC64 |
485 | { |
486 | .procname = "tsb-ratio", |
487 | .data = &sysctl_tsb_ratio, |
488 | .maxlen = sizeof (int), |
489 | .mode = 0644, |
490 | .proc_handler = proc_dointvec, |
491 | }, |
492 | #endif |
493 | #ifdef __hppa__ |
494 | { |
495 | .procname = "soft-power", |
496 | .data = &pwrsw_enabled, |
497 | .maxlen = sizeof (int), |
498 | .mode = 0644, |
499 | .proc_handler = proc_dointvec, |
500 | }, |
501 | { |
502 | .procname = "unaligned-trap", |
503 | .data = &unaligned_enabled, |
504 | .maxlen = sizeof (int), |
505 | .mode = 0644, |
506 | .proc_handler = proc_dointvec, |
507 | }, |
508 | #endif |
509 | { |
510 | .procname = "ctrl-alt-del", |
511 | .data = &C_A_D, |
512 | .maxlen = sizeof(int), |
513 | .mode = 0644, |
514 | .proc_handler = proc_dointvec, |
515 | }, |
516 | #ifdef CONFIG_FUNCTION_TRACER |
517 | { |
518 | .procname = "ftrace_enabled", |
519 | .data = &ftrace_enabled, |
520 | .maxlen = sizeof(int), |
521 | .mode = 0644, |
522 | .proc_handler = ftrace_enable_sysctl, |
523 | }, |
524 | #endif |
525 | #ifdef CONFIG_STACK_TRACER |
526 | { |
527 | .procname = "stack_tracer_enabled", |
528 | .data = &stack_tracer_enabled, |
529 | .maxlen = sizeof(int), |
530 | .mode = 0644, |
531 | .proc_handler = stack_trace_sysctl, |
532 | }, |
533 | #endif |
534 | #ifdef CONFIG_TRACING |
535 | { |
536 | .procname = "ftrace_dump_on_oops", |
537 | .data = &ftrace_dump_on_oops, |
538 | .maxlen = sizeof(int), |
539 | .mode = 0644, |
540 | .proc_handler = proc_dointvec, |
541 | }, |
542 | #endif |
543 | #ifdef CONFIG_MODULES |
544 | { |
545 | .procname = "modprobe", |
546 | .data = &modprobe_path, |
547 | .maxlen = KMOD_PATH_LEN, |
548 | .mode = 0644, |
549 | .proc_handler = proc_dostring, |
550 | }, |
551 | { |
552 | .procname = "modules_disabled", |
553 | .data = &modules_disabled, |
554 | .maxlen = sizeof(int), |
555 | .mode = 0644, |
556 | /* only handle a transition from default "0" to "1" */ |
557 | .proc_handler = proc_dointvec_minmax, |
558 | .extra1 = &one, |
559 | .extra2 = &one, |
560 | }, |
561 | #endif |
562 | #ifdef CONFIG_HOTPLUG |
563 | { |
564 | .procname = "hotplug", |
565 | .data = &uevent_helper, |
566 | .maxlen = UEVENT_HELPER_PATH_LEN, |
567 | .mode = 0644, |
568 | .proc_handler = proc_dostring, |
569 | }, |
570 | #endif |
571 | #ifdef CONFIG_CHR_DEV_SG |
572 | { |
573 | .procname = "sg-big-buff", |
574 | .data = &sg_big_buff, |
575 | .maxlen = sizeof (int), |
576 | .mode = 0444, |
577 | .proc_handler = proc_dointvec, |
578 | }, |
579 | #endif |
580 | #ifdef CONFIG_BSD_PROCESS_ACCT |
581 | { |
582 | .procname = "acct", |
583 | .data = &acct_parm, |
584 | .maxlen = 3*sizeof(int), |
585 | .mode = 0644, |
586 | .proc_handler = proc_dointvec, |
587 | }, |
588 | #endif |
589 | #ifdef CONFIG_MAGIC_SYSRQ |
590 | { |
591 | .procname = "sysrq", |
592 | .data = &__sysrq_enabled, |
593 | .maxlen = sizeof (int), |
594 | .mode = 0644, |
595 | .proc_handler = sysrq_sysctl_handler, |
596 | }, |
597 | #endif |
598 | #ifdef CONFIG_PROC_SYSCTL |
599 | { |
600 | .procname = "cad_pid", |
601 | .data = NULL, |
602 | .maxlen = sizeof (int), |
603 | .mode = 0600, |
604 | .proc_handler = proc_do_cad_pid, |
605 | }, |
606 | #endif |
607 | { |
608 | .procname = "threads-max", |
609 | .data = &max_threads, |
610 | .maxlen = sizeof(int), |
611 | .mode = 0644, |
612 | .proc_handler = proc_dointvec, |
613 | }, |
614 | { |
615 | .procname = "random", |
616 | .mode = 0555, |
617 | .child = random_table, |
618 | }, |
619 | { |
620 | .procname = "usermodehelper", |
621 | .mode = 0555, |
622 | .child = usermodehelper_table, |
623 | }, |
624 | { |
625 | .procname = "overflowuid", |
626 | .data = &overflowuid, |
627 | .maxlen = sizeof(int), |
628 | .mode = 0644, |
629 | .proc_handler = proc_dointvec_minmax, |
630 | .extra1 = &minolduid, |
631 | .extra2 = &maxolduid, |
632 | }, |
633 | { |
634 | .procname = "overflowgid", |
635 | .data = &overflowgid, |
636 | .maxlen = sizeof(int), |
637 | .mode = 0644, |
638 | .proc_handler = proc_dointvec_minmax, |
639 | .extra1 = &minolduid, |
640 | .extra2 = &maxolduid, |
641 | }, |
642 | #ifdef CONFIG_S390 |
643 | #ifdef CONFIG_MATHEMU |
644 | { |
645 | .procname = "ieee_emulation_warnings", |
646 | .data = &sysctl_ieee_emulation_warnings, |
647 | .maxlen = sizeof(int), |
648 | .mode = 0644, |
649 | .proc_handler = proc_dointvec, |
650 | }, |
651 | #endif |
652 | { |
653 | .procname = "userprocess_debug", |
654 | .data = &show_unhandled_signals, |
655 | .maxlen = sizeof(int), |
656 | .mode = 0644, |
657 | .proc_handler = proc_dointvec, |
658 | }, |
659 | #endif |
660 | { |
661 | .procname = "pid_max", |
662 | .data = &pid_max, |
663 | .maxlen = sizeof (int), |
664 | .mode = 0644, |
665 | .proc_handler = proc_dointvec_minmax, |
666 | .extra1 = &pid_max_min, |
667 | .extra2 = &pid_max_max, |
668 | }, |
669 | { |
670 | .procname = "panic_on_oops", |
671 | .data = &panic_on_oops, |
672 | .maxlen = sizeof(int), |
673 | .mode = 0644, |
674 | .proc_handler = proc_dointvec, |
675 | }, |
676 | #if defined CONFIG_PRINTK |
677 | { |
678 | .procname = "printk", |
679 | .data = &console_loglevel, |
680 | .maxlen = 4*sizeof(int), |
681 | .mode = 0644, |
682 | .proc_handler = proc_dointvec, |
683 | }, |
684 | { |
685 | .procname = "printk_ratelimit", |
686 | .data = &printk_ratelimit_state.interval, |
687 | .maxlen = sizeof(int), |
688 | .mode = 0644, |
689 | .proc_handler = proc_dointvec_jiffies, |
690 | }, |
691 | { |
692 | .procname = "printk_ratelimit_burst", |
693 | .data = &printk_ratelimit_state.burst, |
694 | .maxlen = sizeof(int), |
695 | .mode = 0644, |
696 | .proc_handler = proc_dointvec, |
697 | }, |
698 | { |
699 | .procname = "printk_delay", |
700 | .data = &printk_delay_msec, |
701 | .maxlen = sizeof(int), |
702 | .mode = 0644, |
703 | .proc_handler = proc_dointvec_minmax, |
704 | .extra1 = &zero, |
705 | .extra2 = &ten_thousand, |
706 | }, |
707 | { |
708 | .procname = "dmesg_restrict", |
709 | .data = &dmesg_restrict, |
710 | .maxlen = sizeof(int), |
711 | .mode = 0644, |
712 | .proc_handler = proc_dointvec_minmax_sysadmin, |
713 | .extra1 = &zero, |
714 | .extra2 = &one, |
715 | }, |
716 | { |
717 | .procname = "kptr_restrict", |
718 | .data = &kptr_restrict, |
719 | .maxlen = sizeof(int), |
720 | .mode = 0644, |
721 | .proc_handler = proc_dointvec_minmax_sysadmin, |
722 | .extra1 = &zero, |
723 | .extra2 = &two, |
724 | }, |
725 | #endif |
726 | { |
727 | .procname = "ngroups_max", |
728 | .data = &ngroups_max, |
729 | .maxlen = sizeof (int), |
730 | .mode = 0444, |
731 | .proc_handler = proc_dointvec, |
732 | }, |
733 | { |
734 | .procname = "cap_last_cap", |
735 | .data = (void *)&cap_last_cap, |
736 | .maxlen = sizeof(int), |
737 | .mode = 0444, |
738 | .proc_handler = proc_dointvec, |
739 | }, |
740 | #if defined(CONFIG_LOCKUP_DETECTOR) |
741 | { |
742 | .procname = "watchdog", |
743 | .data = &watchdog_enabled, |
744 | .maxlen = sizeof (int), |
745 | .mode = 0644, |
746 | .proc_handler = proc_dowatchdog, |
747 | .extra1 = &zero, |
748 | .extra2 = &one, |
749 | }, |
750 | { |
751 | .procname = "watchdog_thresh", |
752 | .data = &watchdog_thresh, |
753 | .maxlen = sizeof(int), |
754 | .mode = 0644, |
755 | .proc_handler = proc_dowatchdog, |
756 | .extra1 = &neg_one, |
757 | .extra2 = &sixty, |
758 | }, |
759 | { |
760 | .procname = "softlockup_panic", |
761 | .data = &softlockup_panic, |
762 | .maxlen = sizeof(int), |
763 | .mode = 0644, |
764 | .proc_handler = proc_dointvec_minmax, |
765 | .extra1 = &zero, |
766 | .extra2 = &one, |
767 | }, |
768 | { |
769 | .procname = "nmi_watchdog", |
770 | .data = &watchdog_enabled, |
771 | .maxlen = sizeof (int), |
772 | .mode = 0644, |
773 | .proc_handler = proc_dowatchdog, |
774 | .extra1 = &zero, |
775 | .extra2 = &one, |
776 | }, |
777 | #endif |
778 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) |
779 | { |
780 | .procname = "unknown_nmi_panic", |
781 | .data = &unknown_nmi_panic, |
782 | .maxlen = sizeof (int), |
783 | .mode = 0644, |
784 | .proc_handler = proc_dointvec, |
785 | }, |
786 | #endif |
787 | #if defined(CONFIG_X86) |
788 | { |
789 | .procname = "panic_on_unrecovered_nmi", |
790 | .data = &panic_on_unrecovered_nmi, |
791 | .maxlen = sizeof(int), |
792 | .mode = 0644, |
793 | .proc_handler = proc_dointvec, |
794 | }, |
795 | { |
796 | .procname = "panic_on_io_nmi", |
797 | .data = &panic_on_io_nmi, |
798 | .maxlen = sizeof(int), |
799 | .mode = 0644, |
800 | .proc_handler = proc_dointvec, |
801 | }, |
802 | #ifdef CONFIG_DEBUG_STACKOVERFLOW |
803 | { |
804 | .procname = "panic_on_stackoverflow", |
805 | .data = &sysctl_panic_on_stackoverflow, |
806 | .maxlen = sizeof(int), |
807 | .mode = 0644, |
808 | .proc_handler = proc_dointvec, |
809 | }, |
810 | #endif |
811 | { |
812 | .procname = "bootloader_type", |
813 | .data = &bootloader_type, |
814 | .maxlen = sizeof (int), |
815 | .mode = 0444, |
816 | .proc_handler = proc_dointvec, |
817 | }, |
818 | { |
819 | .procname = "bootloader_version", |
820 | .data = &bootloader_version, |
821 | .maxlen = sizeof (int), |
822 | .mode = 0444, |
823 | .proc_handler = proc_dointvec, |
824 | }, |
825 | { |
826 | .procname = "kstack_depth_to_print", |
827 | .data = &kstack_depth_to_print, |
828 | .maxlen = sizeof(int), |
829 | .mode = 0644, |
830 | .proc_handler = proc_dointvec, |
831 | }, |
832 | { |
833 | .procname = "io_delay_type", |
834 | .data = &io_delay_type, |
835 | .maxlen = sizeof(int), |
836 | .mode = 0644, |
837 | .proc_handler = proc_dointvec, |
838 | }, |
839 | #endif |
840 | #if defined(CONFIG_MMU) |
841 | { |
842 | .procname = "randomize_va_space", |
843 | .data = &randomize_va_space, |
844 | .maxlen = sizeof(int), |
845 | .mode = 0644, |
846 | .proc_handler = proc_dointvec, |
847 | }, |
848 | #endif |
849 | #if defined(CONFIG_S390) && defined(CONFIG_SMP) |
850 | { |
851 | .procname = "spin_retry", |
852 | .data = &spin_retry, |
853 | .maxlen = sizeof (int), |
854 | .mode = 0644, |
855 | .proc_handler = proc_dointvec, |
856 | }, |
857 | #endif |
858 | #if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86) |
859 | { |
860 | .procname = "acpi_video_flags", |
861 | .data = &acpi_realmode_flags, |
862 | .maxlen = sizeof (unsigned long), |
863 | .mode = 0644, |
864 | .proc_handler = proc_doulongvec_minmax, |
865 | }, |
866 | #endif |
867 | #ifdef CONFIG_IA64 |
868 | { |
869 | .procname = "ignore-unaligned-usertrap", |
870 | .data = &no_unaligned_warning, |
871 | .maxlen = sizeof (int), |
872 | .mode = 0644, |
873 | .proc_handler = proc_dointvec, |
874 | }, |
875 | { |
876 | .procname = "unaligned-dump-stack", |
877 | .data = &unaligned_dump_stack, |
878 | .maxlen = sizeof (int), |
879 | .mode = 0644, |
880 | .proc_handler = proc_dointvec, |
881 | }, |
882 | #endif |
883 | #ifdef CONFIG_DETECT_HUNG_TASK |
884 | { |
885 | .procname = "hung_task_panic", |
886 | .data = &sysctl_hung_task_panic, |
887 | .maxlen = sizeof(int), |
888 | .mode = 0644, |
889 | .proc_handler = proc_dointvec_minmax, |
890 | .extra1 = &zero, |
891 | .extra2 = &one, |
892 | }, |
893 | { |
894 | .procname = "hung_task_check_count", |
895 | .data = &sysctl_hung_task_check_count, |
896 | .maxlen = sizeof(unsigned long), |
897 | .mode = 0644, |
898 | .proc_handler = proc_doulongvec_minmax, |
899 | }, |
900 | { |
901 | .procname = "hung_task_timeout_secs", |
902 | .data = &sysctl_hung_task_timeout_secs, |
903 | .maxlen = sizeof(unsigned long), |
904 | .mode = 0644, |
905 | .proc_handler = proc_dohung_task_timeout_secs, |
906 | }, |
907 | { |
908 | .procname = "hung_task_warnings", |
909 | .data = &sysctl_hung_task_warnings, |
910 | .maxlen = sizeof(unsigned long), |
911 | .mode = 0644, |
912 | .proc_handler = proc_doulongvec_minmax, |
913 | }, |
914 | #endif |
915 | #ifdef CONFIG_COMPAT |
916 | { |
917 | .procname = "compat-log", |
918 | .data = &compat_log, |
919 | .maxlen = sizeof (int), |
920 | .mode = 0644, |
921 | .proc_handler = proc_dointvec, |
922 | }, |
923 | #endif |
924 | #ifdef CONFIG_RT_MUTEXES |
925 | { |
926 | .procname = "max_lock_depth", |
927 | .data = &max_lock_depth, |
928 | .maxlen = sizeof(int), |
929 | .mode = 0644, |
930 | .proc_handler = proc_dointvec, |
931 | }, |
932 | #endif |
933 | { |
934 | .procname = "poweroff_cmd", |
935 | .data = &poweroff_cmd, |
936 | .maxlen = POWEROFF_CMD_PATH_LEN, |
937 | .mode = 0644, |
938 | .proc_handler = proc_dostring, |
939 | }, |
940 | #ifdef CONFIG_KEYS |
941 | { |
942 | .procname = "keys", |
943 | .mode = 0555, |
944 | .child = key_sysctls, |
945 | }, |
946 | #endif |
947 | #ifdef CONFIG_RCU_TORTURE_TEST |
948 | { |
949 | .procname = "rcutorture_runnable", |
950 | .data = &rcutorture_runnable, |
951 | .maxlen = sizeof(int), |
952 | .mode = 0644, |
953 | .proc_handler = proc_dointvec, |
954 | }, |
955 | #endif |
956 | #ifdef CONFIG_PERF_EVENTS |
957 | /* |
958 | * User-space scripts rely on the existence of this file |
959 | * as a feature check for perf_events being enabled. |
960 | * |
961 | * So it's an ABI, do not remove! |
962 | */ |
963 | { |
964 | .procname = "perf_event_paranoid", |
965 | .data = &sysctl_perf_event_paranoid, |
966 | .maxlen = sizeof(sysctl_perf_event_paranoid), |
967 | .mode = 0644, |
968 | .proc_handler = proc_dointvec, |
969 | }, |
970 | { |
971 | .procname = "perf_event_mlock_kb", |
972 | .data = &sysctl_perf_event_mlock, |
973 | .maxlen = sizeof(sysctl_perf_event_mlock), |
974 | .mode = 0644, |
975 | .proc_handler = proc_dointvec, |
976 | }, |
977 | { |
978 | .procname = "perf_event_max_sample_rate", |
979 | .data = &sysctl_perf_event_sample_rate, |
980 | .maxlen = sizeof(sysctl_perf_event_sample_rate), |
981 | .mode = 0644, |
982 | .proc_handler = perf_proc_update_handler, |
983 | }, |
984 | #endif |
985 | #ifdef CONFIG_KMEMCHECK |
986 | { |
987 | .procname = "kmemcheck", |
988 | .data = &kmemcheck_enabled, |
989 | .maxlen = sizeof(int), |
990 | .mode = 0644, |
991 | .proc_handler = proc_dointvec, |
992 | }, |
993 | #endif |
994 | #ifdef CONFIG_BLOCK |
995 | { |
996 | .procname = "blk_iopoll", |
997 | .data = &blk_iopoll_enabled, |
998 | .maxlen = sizeof(int), |
999 | .mode = 0644, |
1000 | .proc_handler = proc_dointvec, |
1001 | }, |
1002 | #endif |
1003 | { } |
1004 | }; |
1005 | |
1006 | static struct ctl_table vm_table[] = { |
1007 | { |
1008 | .procname = "overcommit_memory", |
1009 | .data = &sysctl_overcommit_memory, |
1010 | .maxlen = sizeof(sysctl_overcommit_memory), |
1011 | .mode = 0644, |
1012 | .proc_handler = proc_dointvec_minmax, |
1013 | .extra1 = &zero, |
1014 | .extra2 = &two, |
1015 | }, |
1016 | { |
1017 | .procname = "panic_on_oom", |
1018 | .data = &sysctl_panic_on_oom, |
1019 | .maxlen = sizeof(sysctl_panic_on_oom), |
1020 | .mode = 0644, |
1021 | .proc_handler = proc_dointvec_minmax, |
1022 | .extra1 = &zero, |
1023 | .extra2 = &two, |
1024 | }, |
1025 | { |
1026 | .procname = "oom_kill_allocating_task", |
1027 | .data = &sysctl_oom_kill_allocating_task, |
1028 | .maxlen = sizeof(sysctl_oom_kill_allocating_task), |
1029 | .mode = 0644, |
1030 | .proc_handler = proc_dointvec, |
1031 | }, |
1032 | { |
1033 | .procname = "oom_dump_tasks", |
1034 | .data = &sysctl_oom_dump_tasks, |
1035 | .maxlen = sizeof(sysctl_oom_dump_tasks), |
1036 | .mode = 0644, |
1037 | .proc_handler = proc_dointvec, |
1038 | }, |
1039 | { |
1040 | .procname = "overcommit_ratio", |
1041 | .data = &sysctl_overcommit_ratio, |
1042 | .maxlen = sizeof(sysctl_overcommit_ratio), |
1043 | .mode = 0644, |
1044 | .proc_handler = proc_dointvec, |
1045 | }, |
1046 | { |
1047 | .procname = "page-cluster", |
1048 | .data = &page_cluster, |
1049 | .maxlen = sizeof(int), |
1050 | .mode = 0644, |
1051 | .proc_handler = proc_dointvec_minmax, |
1052 | .extra1 = &zero, |
1053 | }, |
1054 | { |
1055 | .procname = "dirty_background_ratio", |
1056 | .data = &dirty_background_ratio, |
1057 | .maxlen = sizeof(dirty_background_ratio), |
1058 | .mode = 0644, |
1059 | .proc_handler = dirty_background_ratio_handler, |
1060 | .extra1 = &zero, |
1061 | .extra2 = &one_hundred, |
1062 | }, |
1063 | { |
1064 | .procname = "dirty_background_bytes", |
1065 | .data = &dirty_background_bytes, |
1066 | .maxlen = sizeof(dirty_background_bytes), |
1067 | .mode = 0644, |
1068 | .proc_handler = dirty_background_bytes_handler, |
1069 | .extra1 = &one_ul, |
1070 | }, |
1071 | { |
1072 | .procname = "dirty_ratio", |
1073 | .data = &vm_dirty_ratio, |
1074 | .maxlen = sizeof(vm_dirty_ratio), |
1075 | .mode = 0644, |
1076 | .proc_handler = dirty_ratio_handler, |
1077 | .extra1 = &zero, |
1078 | .extra2 = &one_hundred, |
1079 | }, |
1080 | { |
1081 | .procname = "dirty_bytes", |
1082 | .data = &vm_dirty_bytes, |
1083 | .maxlen = sizeof(vm_dirty_bytes), |
1084 | .mode = 0644, |
1085 | .proc_handler = dirty_bytes_handler, |
1086 | .extra1 = &dirty_bytes_min, |
1087 | }, |
1088 | { |
1089 | .procname = "dirty_writeback_centisecs", |
1090 | .data = &dirty_writeback_interval, |
1091 | .maxlen = sizeof(dirty_writeback_interval), |
1092 | .mode = 0644, |
1093 | .proc_handler = dirty_writeback_centisecs_handler, |
1094 | }, |
1095 | { |
1096 | .procname = "dirty_expire_centisecs", |
1097 | .data = &dirty_expire_interval, |
1098 | .maxlen = sizeof(dirty_expire_interval), |
1099 | .mode = 0644, |
1100 | .proc_handler = proc_dointvec_minmax, |
1101 | .extra1 = &zero, |
1102 | }, |
1103 | { |
1104 | .procname = "nr_pdflush_threads", |
1105 | .mode = 0444 /* read-only */, |
1106 | .proc_handler = pdflush_proc_obsolete, |
1107 | }, |
1108 | { |
1109 | .procname = "swappiness", |
1110 | .data = &vm_swappiness, |
1111 | .maxlen = sizeof(vm_swappiness), |
1112 | .mode = 0644, |
1113 | .proc_handler = proc_dointvec_minmax, |
1114 | .extra1 = &zero, |
1115 | .extra2 = &one_hundred, |
1116 | }, |
1117 | #ifdef CONFIG_HUGETLB_PAGE |
1118 | { |
1119 | .procname = "nr_hugepages", |
1120 | .data = NULL, |
1121 | .maxlen = sizeof(unsigned long), |
1122 | .mode = 0644, |
1123 | .proc_handler = hugetlb_sysctl_handler, |
1124 | .extra1 = (void *)&hugetlb_zero, |
1125 | .extra2 = (void *)&hugetlb_infinity, |
1126 | }, |
1127 | #ifdef CONFIG_NUMA |
1128 | { |
1129 | .procname = "nr_hugepages_mempolicy", |
1130 | .data = NULL, |
1131 | .maxlen = sizeof(unsigned long), |
1132 | .mode = 0644, |
1133 | .proc_handler = &hugetlb_mempolicy_sysctl_handler, |
1134 | .extra1 = (void *)&hugetlb_zero, |
1135 | .extra2 = (void *)&hugetlb_infinity, |
1136 | }, |
1137 | #endif |
1138 | { |
1139 | .procname = "hugetlb_shm_group", |
1140 | .data = &sysctl_hugetlb_shm_group, |
1141 | .maxlen = sizeof(gid_t), |
1142 | .mode = 0644, |
1143 | .proc_handler = proc_dointvec, |
1144 | }, |
1145 | { |
1146 | .procname = "hugepages_treat_as_movable", |
1147 | .data = &hugepages_treat_as_movable, |
1148 | .maxlen = sizeof(int), |
1149 | .mode = 0644, |
1150 | .proc_handler = hugetlb_treat_movable_handler, |
1151 | }, |
1152 | { |
1153 | .procname = "nr_overcommit_hugepages", |
1154 | .data = NULL, |
1155 | .maxlen = sizeof(unsigned long), |
1156 | .mode = 0644, |
1157 | .proc_handler = hugetlb_overcommit_handler, |
1158 | .extra1 = (void *)&hugetlb_zero, |
1159 | .extra2 = (void *)&hugetlb_infinity, |
1160 | }, |
1161 | #endif |
1162 | { |
1163 | .procname = "lowmem_reserve_ratio", |
1164 | .data = &sysctl_lowmem_reserve_ratio, |
1165 | .maxlen = sizeof(sysctl_lowmem_reserve_ratio), |
1166 | .mode = 0644, |
1167 | .proc_handler = lowmem_reserve_ratio_sysctl_handler, |
1168 | }, |
1169 | { |
1170 | .procname = "drop_caches", |
1171 | .data = &sysctl_drop_caches, |
1172 | .maxlen = sizeof(int), |
1173 | .mode = 0644, |
1174 | .proc_handler = drop_caches_sysctl_handler, |
1175 | .extra1 = &one, |
1176 | .extra2 = &three, |
1177 | }, |
1178 | #ifdef CONFIG_COMPACTION |
1179 | { |
1180 | .procname = "compact_memory", |
1181 | .data = &sysctl_compact_memory, |
1182 | .maxlen = sizeof(int), |
1183 | .mode = 0200, |
1184 | .proc_handler = sysctl_compaction_handler, |
1185 | }, |
1186 | { |
1187 | .procname = "extfrag_threshold", |
1188 | .data = &sysctl_extfrag_threshold, |
1189 | .maxlen = sizeof(int), |
1190 | .mode = 0644, |
1191 | .proc_handler = sysctl_extfrag_handler, |
1192 | .extra1 = &min_extfrag_threshold, |
1193 | .extra2 = &max_extfrag_threshold, |
1194 | }, |
1195 | |
1196 | #endif /* CONFIG_COMPACTION */ |
1197 | { |
1198 | .procname = "min_free_kbytes", |
1199 | .data = &min_free_kbytes, |
1200 | .maxlen = sizeof(min_free_kbytes), |
1201 | .mode = 0644, |
1202 | .proc_handler = min_free_kbytes_sysctl_handler, |
1203 | .extra1 = &zero, |
1204 | }, |
1205 | { |
1206 | .procname = "percpu_pagelist_fraction", |
1207 | .data = &percpu_pagelist_fraction, |
1208 | .maxlen = sizeof(percpu_pagelist_fraction), |
1209 | .mode = 0644, |
1210 | .proc_handler = percpu_pagelist_fraction_sysctl_handler, |
1211 | .extra1 = &min_percpu_pagelist_fract, |
1212 | }, |
1213 | #ifdef CONFIG_MMU |
1214 | { |
1215 | .procname = "max_map_count", |
1216 | .data = &sysctl_max_map_count, |
1217 | .maxlen = sizeof(sysctl_max_map_count), |
1218 | .mode = 0644, |
1219 | .proc_handler = proc_dointvec_minmax, |
1220 | .extra1 = &zero, |
1221 | }, |
1222 | #else |
1223 | { |
1224 | .procname = "nr_trim_pages", |
1225 | .data = &sysctl_nr_trim_pages, |
1226 | .maxlen = sizeof(sysctl_nr_trim_pages), |
1227 | .mode = 0644, |
1228 | .proc_handler = proc_dointvec_minmax, |
1229 | .extra1 = &zero, |
1230 | }, |
1231 | #endif |
1232 | { |
1233 | .procname = "laptop_mode", |
1234 | .data = &laptop_mode, |
1235 | .maxlen = sizeof(laptop_mode), |
1236 | .mode = 0644, |
1237 | .proc_handler = proc_dointvec_jiffies, |
1238 | }, |
1239 | { |
1240 | .procname = "block_dump", |
1241 | .data = &block_dump, |
1242 | .maxlen = sizeof(block_dump), |
1243 | .mode = 0644, |
1244 | .proc_handler = proc_dointvec, |
1245 | .extra1 = &zero, |
1246 | }, |
1247 | { |
1248 | .procname = "vfs_cache_pressure", |
1249 | .data = &sysctl_vfs_cache_pressure, |
1250 | .maxlen = sizeof(sysctl_vfs_cache_pressure), |
1251 | .mode = 0644, |
1252 | .proc_handler = proc_dointvec, |
1253 | .extra1 = &zero, |
1254 | }, |
1255 | #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT |
1256 | { |
1257 | .procname = "legacy_va_layout", |
1258 | .data = &sysctl_legacy_va_layout, |
1259 | .maxlen = sizeof(sysctl_legacy_va_layout), |
1260 | .mode = 0644, |
1261 | .proc_handler = proc_dointvec, |
1262 | .extra1 = &zero, |
1263 | }, |
1264 | #endif |
1265 | #ifdef CONFIG_NUMA |
1266 | { |
1267 | .procname = "zone_reclaim_mode", |
1268 | .data = &zone_reclaim_mode, |
1269 | .maxlen = sizeof(zone_reclaim_mode), |
1270 | .mode = 0644, |
1271 | .proc_handler = proc_dointvec, |
1272 | .extra1 = &zero, |
1273 | }, |
1274 | { |
1275 | .procname = "min_unmapped_ratio", |
1276 | .data = &sysctl_min_unmapped_ratio, |
1277 | .maxlen = sizeof(sysctl_min_unmapped_ratio), |
1278 | .mode = 0644, |
1279 | .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler, |
1280 | .extra1 = &zero, |
1281 | .extra2 = &one_hundred, |
1282 | }, |
1283 | { |
1284 | .procname = "min_slab_ratio", |
1285 | .data = &sysctl_min_slab_ratio, |
1286 | .maxlen = sizeof(sysctl_min_slab_ratio), |
1287 | .mode = 0644, |
1288 | .proc_handler = sysctl_min_slab_ratio_sysctl_handler, |
1289 | .extra1 = &zero, |
1290 | .extra2 = &one_hundred, |
1291 | }, |
1292 | #endif |
1293 | #ifdef CONFIG_SMP |
1294 | { |
1295 | .procname = "stat_interval", |
1296 | .data = &sysctl_stat_interval, |
1297 | .maxlen = sizeof(sysctl_stat_interval), |
1298 | .mode = 0644, |
1299 | .proc_handler = proc_dointvec_jiffies, |
1300 | }, |
1301 | #endif |
1302 | #ifdef CONFIG_MMU |
1303 | { |
1304 | .procname = "mmap_min_addr", |
1305 | .data = &dac_mmap_min_addr, |
1306 | .maxlen = sizeof(unsigned long), |
1307 | .mode = 0644, |
1308 | .proc_handler = mmap_min_addr_handler, |
1309 | }, |
1310 | #endif |
1311 | #ifdef CONFIG_NUMA |
1312 | { |
1313 | .procname = "numa_zonelist_order", |
1314 | .data = &numa_zonelist_order, |
1315 | .maxlen = NUMA_ZONELIST_ORDER_LEN, |
1316 | .mode = 0644, |
1317 | .proc_handler = numa_zonelist_order_handler, |
1318 | }, |
1319 | #endif |
1320 | #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ |
1321 | (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) |
1322 | { |
1323 | .procname = "vdso_enabled", |
1324 | .data = &vdso_enabled, |
1325 | .maxlen = sizeof(vdso_enabled), |
1326 | .mode = 0644, |
1327 | .proc_handler = proc_dointvec, |
1328 | .extra1 = &zero, |
1329 | }, |
1330 | #endif |
1331 | #ifdef CONFIG_HIGHMEM |
1332 | { |
1333 | .procname = "highmem_is_dirtyable", |
1334 | .data = &vm_highmem_is_dirtyable, |
1335 | .maxlen = sizeof(vm_highmem_is_dirtyable), |
1336 | .mode = 0644, |
1337 | .proc_handler = proc_dointvec_minmax, |
1338 | .extra1 = &zero, |
1339 | .extra2 = &one, |
1340 | }, |
1341 | #endif |
1342 | { |
1343 | .procname = "scan_unevictable_pages", |
1344 | .data = &scan_unevictable_pages, |
1345 | .maxlen = sizeof(scan_unevictable_pages), |
1346 | .mode = 0644, |
1347 | .proc_handler = scan_unevictable_handler, |
1348 | }, |
1349 | #ifdef CONFIG_MEMORY_FAILURE |
1350 | { |
1351 | .procname = "memory_failure_early_kill", |
1352 | .data = &sysctl_memory_failure_early_kill, |
1353 | .maxlen = sizeof(sysctl_memory_failure_early_kill), |
1354 | .mode = 0644, |
1355 | .proc_handler = proc_dointvec_minmax, |
1356 | .extra1 = &zero, |
1357 | .extra2 = &one, |
1358 | }, |
1359 | { |
1360 | .procname = "memory_failure_recovery", |
1361 | .data = &sysctl_memory_failure_recovery, |
1362 | .maxlen = sizeof(sysctl_memory_failure_recovery), |
1363 | .mode = 0644, |
1364 | .proc_handler = proc_dointvec_minmax, |
1365 | .extra1 = &zero, |
1366 | .extra2 = &one, |
1367 | }, |
1368 | #endif |
1369 | { } |
1370 | }; |
1371 | |
1372 | #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
1373 | static struct ctl_table binfmt_misc_table[] = { |
1374 | { } |
1375 | }; |
1376 | #endif |
1377 | |
1378 | static struct ctl_table fs_table[] = { |
1379 | { |
1380 | .procname = "inode-nr", |
1381 | .data = &inodes_stat, |
1382 | .maxlen = 2*sizeof(int), |
1383 | .mode = 0444, |
1384 | .proc_handler = proc_nr_inodes, |
1385 | }, |
1386 | { |
1387 | .procname = "inode-state", |
1388 | .data = &inodes_stat, |
1389 | .maxlen = 7*sizeof(int), |
1390 | .mode = 0444, |
1391 | .proc_handler = proc_nr_inodes, |
1392 | }, |
1393 | { |
1394 | .procname = "file-nr", |
1395 | .data = &files_stat, |
1396 | .maxlen = sizeof(files_stat), |
1397 | .mode = 0444, |
1398 | .proc_handler = proc_nr_files, |
1399 | }, |
1400 | { |
1401 | .procname = "file-max", |
1402 | .data = &files_stat.max_files, |
1403 | .maxlen = sizeof(files_stat.max_files), |
1404 | .mode = 0644, |
1405 | .proc_handler = proc_doulongvec_minmax, |
1406 | }, |
1407 | { |
1408 | .procname = "nr_open", |
1409 | .data = &sysctl_nr_open, |
1410 | .maxlen = sizeof(int), |
1411 | .mode = 0644, |
1412 | .proc_handler = proc_dointvec_minmax, |
1413 | .extra1 = &sysctl_nr_open_min, |
1414 | .extra2 = &sysctl_nr_open_max, |
1415 | }, |
1416 | { |
1417 | .procname = "dentry-state", |
1418 | .data = &dentry_stat, |
1419 | .maxlen = 6*sizeof(int), |
1420 | .mode = 0444, |
1421 | .proc_handler = proc_nr_dentry, |
1422 | }, |
1423 | { |
1424 | .procname = "overflowuid", |
1425 | .data = &fs_overflowuid, |
1426 | .maxlen = sizeof(int), |
1427 | .mode = 0644, |
1428 | .proc_handler = proc_dointvec_minmax, |
1429 | .extra1 = &minolduid, |
1430 | .extra2 = &maxolduid, |
1431 | }, |
1432 | { |
1433 | .procname = "overflowgid", |
1434 | .data = &fs_overflowgid, |
1435 | .maxlen = sizeof(int), |
1436 | .mode = 0644, |
1437 | .proc_handler = proc_dointvec_minmax, |
1438 | .extra1 = &minolduid, |
1439 | .extra2 = &maxolduid, |
1440 | }, |
1441 | #ifdef CONFIG_FILE_LOCKING |
1442 | { |
1443 | .procname = "leases-enable", |
1444 | .data = &leases_enable, |
1445 | .maxlen = sizeof(int), |
1446 | .mode = 0644, |
1447 | .proc_handler = proc_dointvec, |
1448 | }, |
1449 | #endif |
1450 | #ifdef CONFIG_DNOTIFY |
1451 | { |
1452 | .procname = "dir-notify-enable", |
1453 | .data = &dir_notify_enable, |
1454 | .maxlen = sizeof(int), |
1455 | .mode = 0644, |
1456 | .proc_handler = proc_dointvec, |
1457 | }, |
1458 | #endif |
1459 | #ifdef CONFIG_MMU |
1460 | #ifdef CONFIG_FILE_LOCKING |
1461 | { |
1462 | .procname = "lease-break-time", |
1463 | .data = &lease_break_time, |
1464 | .maxlen = sizeof(int), |
1465 | .mode = 0644, |
1466 | .proc_handler = proc_dointvec, |
1467 | }, |
1468 | #endif |
1469 | #ifdef CONFIG_AIO |
1470 | { |
1471 | .procname = "aio-nr", |
1472 | .data = &aio_nr, |
1473 | .maxlen = sizeof(aio_nr), |
1474 | .mode = 0444, |
1475 | .proc_handler = proc_doulongvec_minmax, |
1476 | }, |
1477 | { |
1478 | .procname = "aio-max-nr", |
1479 | .data = &aio_max_nr, |
1480 | .maxlen = sizeof(aio_max_nr), |
1481 | .mode = 0644, |
1482 | .proc_handler = proc_doulongvec_minmax, |
1483 | }, |
1484 | #endif /* CONFIG_AIO */ |
1485 | #ifdef CONFIG_INOTIFY_USER |
1486 | { |
1487 | .procname = "inotify", |
1488 | .mode = 0555, |
1489 | .child = inotify_table, |
1490 | }, |
1491 | #endif |
1492 | #ifdef CONFIG_EPOLL |
1493 | { |
1494 | .procname = "epoll", |
1495 | .mode = 0555, |
1496 | .child = epoll_table, |
1497 | }, |
1498 | #endif |
1499 | #endif |
1500 | { |
1501 | .procname = "protected_symlinks", |
1502 | .data = &sysctl_protected_symlinks, |
1503 | .maxlen = sizeof(int), |
1504 | .mode = 0600, |
1505 | .proc_handler = proc_dointvec_minmax, |
1506 | .extra1 = &zero, |
1507 | .extra2 = &one, |
1508 | }, |
1509 | { |
1510 | .procname = "protected_hardlinks", |
1511 | .data = &sysctl_protected_hardlinks, |
1512 | .maxlen = sizeof(int), |
1513 | .mode = 0600, |
1514 | .proc_handler = proc_dointvec_minmax, |
1515 | .extra1 = &zero, |
1516 | .extra2 = &one, |
1517 | }, |
1518 | { |
1519 | .procname = "suid_dumpable", |
1520 | .data = &suid_dumpable, |
1521 | .maxlen = sizeof(int), |
1522 | .mode = 0644, |
1523 | .proc_handler = proc_dointvec_minmax_coredump, |
1524 | .extra1 = &zero, |
1525 | .extra2 = &two, |
1526 | }, |
1527 | #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
1528 | { |
1529 | .procname = "binfmt_misc", |
1530 | .mode = 0555, |
1531 | .child = binfmt_misc_table, |
1532 | }, |
1533 | #endif |
1534 | { |
1535 | .procname = "pipe-max-size", |
1536 | .data = &pipe_max_size, |
1537 | .maxlen = sizeof(int), |
1538 | .mode = 0644, |
1539 | .proc_handler = &pipe_proc_fn, |
1540 | .extra1 = &pipe_min_size, |
1541 | }, |
1542 | { } |
1543 | }; |
1544 | |
1545 | static struct ctl_table debug_table[] = { |
1546 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) || \ |
1547 | defined(CONFIG_S390) || defined(CONFIG_TILE) |
1548 | { |
1549 | .procname = "exception-trace", |
1550 | .data = &show_unhandled_signals, |
1551 | .maxlen = sizeof(int), |
1552 | .mode = 0644, |
1553 | .proc_handler = proc_dointvec |
1554 | }, |
1555 | #endif |
1556 | #if defined(CONFIG_OPTPROBES) |
1557 | { |
1558 | .procname = "kprobes-optimization", |
1559 | .data = &sysctl_kprobes_optimization, |
1560 | .maxlen = sizeof(int), |
1561 | .mode = 0644, |
1562 | .proc_handler = proc_kprobes_optimization_handler, |
1563 | .extra1 = &zero, |
1564 | .extra2 = &one, |
1565 | }, |
1566 | #endif |
1567 | { } |
1568 | }; |
1569 | |
1570 | static struct ctl_table dev_table[] = { |
1571 | { } |
1572 | }; |
1573 | |
1574 | int __init sysctl_init(void) |
1575 | { |
1576 | struct ctl_table_header *hdr; |
1577 | |
1578 | hdr = register_sysctl_table(sysctl_base_table); |
1579 | kmemleak_not_leak(hdr); |
1580 | return 0; |
1581 | } |
1582 | |
1583 | #endif /* CONFIG_SYSCTL */ |
1584 | |
1585 | /* |
1586 | * /proc/sys support |
1587 | */ |
1588 | |
1589 | #ifdef CONFIG_PROC_SYSCTL |
1590 | |
1591 | static int _proc_do_string(void* data, int maxlen, int write, |
1592 | void __user *buffer, |
1593 | size_t *lenp, loff_t *ppos) |
1594 | { |
1595 | size_t len; |
1596 | char __user *p; |
1597 | char c; |
1598 | |
1599 | if (!data || !maxlen || !*lenp) { |
1600 | *lenp = 0; |
1601 | return 0; |
1602 | } |
1603 | |
1604 | if (write) { |
1605 | len = 0; |
1606 | p = buffer; |
1607 | while (len < *lenp) { |
1608 | if (get_user(c, p++)) |
1609 | return -EFAULT; |
1610 | if (c == 0 || c == '\n') |
1611 | break; |
1612 | len++; |
1613 | } |
1614 | if (len >= maxlen) |
1615 | len = maxlen-1; |
1616 | if(copy_from_user(data, buffer, len)) |
1617 | return -EFAULT; |
1618 | ((char *) data)[len] = 0; |
1619 | *ppos += *lenp; |
1620 | } else { |
1621 | len = strlen(data); |
1622 | if (len > maxlen) |
1623 | len = maxlen; |
1624 | |
1625 | if (*ppos > len) { |
1626 | *lenp = 0; |
1627 | return 0; |
1628 | } |
1629 | |
1630 | data += *ppos; |
1631 | len -= *ppos; |
1632 | |
1633 | if (len > *lenp) |
1634 | len = *lenp; |
1635 | if (len) |
1636 | if(copy_to_user(buffer, data, len)) |
1637 | return -EFAULT; |
1638 | if (len < *lenp) { |
1639 | if(put_user('\n', ((char __user *) buffer) + len)) |
1640 | return -EFAULT; |
1641 | len++; |
1642 | } |
1643 | *lenp = len; |
1644 | *ppos += len; |
1645 | } |
1646 | return 0; |
1647 | } |
1648 | |
1649 | /** |
1650 | * proc_dostring - read a string sysctl |
1651 | * @table: the sysctl table |
1652 | * @write: %TRUE if this is a write to the sysctl file |
1653 | * @buffer: the user buffer |
1654 | * @lenp: the size of the user buffer |
1655 | * @ppos: file position |
1656 | * |
1657 | * Reads/writes a string from/to the user buffer. If the kernel |
1658 | * buffer provided is not large enough to hold the string, the |
1659 | * string is truncated. The copied string is %NULL-terminated. |
1660 | * If the string is being read by the user process, it is copied |
1661 | * and a newline '\n' is added. It is truncated if the buffer is |
1662 | * not large enough. |
1663 | * |
1664 | * Returns 0 on success. |
1665 | */ |
1666 | int proc_dostring(struct ctl_table *table, int write, |
1667 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1668 | { |
1669 | return _proc_do_string(table->data, table->maxlen, write, |
1670 | buffer, lenp, ppos); |
1671 | } |
1672 | |
1673 | static size_t proc_skip_spaces(char **buf) |
1674 | { |
1675 | size_t ret; |
1676 | char *tmp = skip_spaces(*buf); |
1677 | ret = tmp - *buf; |
1678 | *buf = tmp; |
1679 | return ret; |
1680 | } |
1681 | |
1682 | static void proc_skip_char(char **buf, size_t *size, const char v) |
1683 | { |
1684 | while (*size) { |
1685 | if (**buf != v) |
1686 | break; |
1687 | (*size)--; |
1688 | (*buf)++; |
1689 | } |
1690 | } |
1691 | |
1692 | #define TMPBUFLEN 22 |
1693 | /** |
1694 | * proc_get_long - reads an ASCII formatted integer from a user buffer |
1695 | * |
1696 | * @buf: a kernel buffer |
1697 | * @size: size of the kernel buffer |
1698 | * @val: this is where the number will be stored |
1699 | * @neg: set to %TRUE if number is negative |
1700 | * @perm_tr: a vector which contains the allowed trailers |
1701 | * @perm_tr_len: size of the perm_tr vector |
1702 | * @tr: pointer to store the trailer character |
1703 | * |
1704 | * In case of success %0 is returned and @buf and @size are updated with |
1705 | * the amount of bytes read. If @tr is non-NULL and a trailing |
1706 | * character exists (size is non-zero after returning from this |
1707 | * function), @tr is updated with the trailing character. |
1708 | */ |
1709 | static int proc_get_long(char **buf, size_t *size, |
1710 | unsigned long *val, bool *neg, |
1711 | const char *perm_tr, unsigned perm_tr_len, char *tr) |
1712 | { |
1713 | int len; |
1714 | char *p, tmp[TMPBUFLEN]; |
1715 | |
1716 | if (!*size) |
1717 | return -EINVAL; |
1718 | |
1719 | len = *size; |
1720 | if (len > TMPBUFLEN - 1) |
1721 | len = TMPBUFLEN - 1; |
1722 | |
1723 | memcpy(tmp, *buf, len); |
1724 | |
1725 | tmp[len] = 0; |
1726 | p = tmp; |
1727 | if (*p == '-' && *size > 1) { |
1728 | *neg = true; |
1729 | p++; |
1730 | } else |
1731 | *neg = false; |
1732 | if (!isdigit(*p)) |
1733 | return -EINVAL; |
1734 | |
1735 | *val = simple_strtoul(p, &p, 0); |
1736 | |
1737 | len = p - tmp; |
1738 | |
1739 | /* We don't know if the next char is whitespace thus we may accept |
1740 | * invalid integers (e.g. 1234...a) or two integers instead of one |
1741 | * (e.g. 123...1). So lets not allow such large numbers. */ |
1742 | if (len == TMPBUFLEN - 1) |
1743 | return -EINVAL; |
1744 | |
1745 | if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len)) |
1746 | return -EINVAL; |
1747 | |
1748 | if (tr && (len < *size)) |
1749 | *tr = *p; |
1750 | |
1751 | *buf += len; |
1752 | *size -= len; |
1753 | |
1754 | return 0; |
1755 | } |
1756 | |
1757 | /** |
1758 | * proc_put_long - converts an integer to a decimal ASCII formatted string |
1759 | * |
1760 | * @buf: the user buffer |
1761 | * @size: the size of the user buffer |
1762 | * @val: the integer to be converted |
1763 | * @neg: sign of the number, %TRUE for negative |
1764 | * |
1765 | * In case of success %0 is returned and @buf and @size are updated with |
1766 | * the amount of bytes written. |
1767 | */ |
1768 | static int proc_put_long(void __user **buf, size_t *size, unsigned long val, |
1769 | bool neg) |
1770 | { |
1771 | int len; |
1772 | char tmp[TMPBUFLEN], *p = tmp; |
1773 | |
1774 | sprintf(p, "%s%lu", neg ? "-" : "", val); |
1775 | len = strlen(tmp); |
1776 | if (len > *size) |
1777 | len = *size; |
1778 | if (copy_to_user(*buf, tmp, len)) |
1779 | return -EFAULT; |
1780 | *size -= len; |
1781 | *buf += len; |
1782 | return 0; |
1783 | } |
1784 | #undef TMPBUFLEN |
1785 | |
1786 | static int proc_put_char(void __user **buf, size_t *size, char c) |
1787 | { |
1788 | if (*size) { |
1789 | char __user **buffer = (char __user **)buf; |
1790 | if (put_user(c, *buffer)) |
1791 | return -EFAULT; |
1792 | (*size)--, (*buffer)++; |
1793 | *buf = *buffer; |
1794 | } |
1795 | return 0; |
1796 | } |
1797 | |
1798 | static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp, |
1799 | int *valp, |
1800 | int write, void *data) |
1801 | { |
1802 | if (write) { |
1803 | *valp = *negp ? -*lvalp : *lvalp; |
1804 | } else { |
1805 | int val = *valp; |
1806 | if (val < 0) { |
1807 | *negp = true; |
1808 | *lvalp = (unsigned long)-val; |
1809 | } else { |
1810 | *negp = false; |
1811 | *lvalp = (unsigned long)val; |
1812 | } |
1813 | } |
1814 | return 0; |
1815 | } |
1816 | |
1817 | static const char proc_wspace_sep[] = { ' ', '\t', '\n' }; |
1818 | |
1819 | static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, |
1820 | int write, void __user *buffer, |
1821 | size_t *lenp, loff_t *ppos, |
1822 | int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
1823 | int write, void *data), |
1824 | void *data) |
1825 | { |
1826 | int *i, vleft, first = 1, err = 0; |
1827 | unsigned long page = 0; |
1828 | size_t left; |
1829 | char *kbuf; |
1830 | |
1831 | if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) { |
1832 | *lenp = 0; |
1833 | return 0; |
1834 | } |
1835 | |
1836 | i = (int *) tbl_data; |
1837 | vleft = table->maxlen / sizeof(*i); |
1838 | left = *lenp; |
1839 | |
1840 | if (!conv) |
1841 | conv = do_proc_dointvec_conv; |
1842 | |
1843 | if (write) { |
1844 | if (left > PAGE_SIZE - 1) |
1845 | left = PAGE_SIZE - 1; |
1846 | page = __get_free_page(GFP_TEMPORARY); |
1847 | kbuf = (char *) page; |
1848 | if (!kbuf) |
1849 | return -ENOMEM; |
1850 | if (copy_from_user(kbuf, buffer, left)) { |
1851 | err = -EFAULT; |
1852 | goto free; |
1853 | } |
1854 | kbuf[left] = 0; |
1855 | } |
1856 | |
1857 | for (; left && vleft--; i++, first=0) { |
1858 | unsigned long lval; |
1859 | bool neg; |
1860 | |
1861 | if (write) { |
1862 | left -= proc_skip_spaces(&kbuf); |
1863 | |
1864 | if (!left) |
1865 | break; |
1866 | err = proc_get_long(&kbuf, &left, &lval, &neg, |
1867 | proc_wspace_sep, |
1868 | sizeof(proc_wspace_sep), NULL); |
1869 | if (err) |
1870 | break; |
1871 | if (conv(&neg, &lval, i, 1, data)) { |
1872 | err = -EINVAL; |
1873 | break; |
1874 | } |
1875 | } else { |
1876 | if (conv(&neg, &lval, i, 0, data)) { |
1877 | err = -EINVAL; |
1878 | break; |
1879 | } |
1880 | if (!first) |
1881 | err = proc_put_char(&buffer, &left, '\t'); |
1882 | if (err) |
1883 | break; |
1884 | err = proc_put_long(&buffer, &left, lval, neg); |
1885 | if (err) |
1886 | break; |
1887 | } |
1888 | } |
1889 | |
1890 | if (!write && !first && left && !err) |
1891 | err = proc_put_char(&buffer, &left, '\n'); |
1892 | if (write && !err && left) |
1893 | left -= proc_skip_spaces(&kbuf); |
1894 | free: |
1895 | if (write) { |
1896 | free_page(page); |
1897 | if (first) |
1898 | return err ? : -EINVAL; |
1899 | } |
1900 | *lenp -= left; |
1901 | *ppos += *lenp; |
1902 | return err; |
1903 | } |
1904 | |
1905 | static int do_proc_dointvec(struct ctl_table *table, int write, |
1906 | void __user *buffer, size_t *lenp, loff_t *ppos, |
1907 | int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
1908 | int write, void *data), |
1909 | void *data) |
1910 | { |
1911 | return __do_proc_dointvec(table->data, table, write, |
1912 | buffer, lenp, ppos, conv, data); |
1913 | } |
1914 | |
1915 | /** |
1916 | * proc_dointvec - read a vector of integers |
1917 | * @table: the sysctl table |
1918 | * @write: %TRUE if this is a write to the sysctl file |
1919 | * @buffer: the user buffer |
1920 | * @lenp: the size of the user buffer |
1921 | * @ppos: file position |
1922 | * |
1923 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer |
1924 | * values from/to the user buffer, treated as an ASCII string. |
1925 | * |
1926 | * Returns 0 on success. |
1927 | */ |
1928 | int proc_dointvec(struct ctl_table *table, int write, |
1929 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1930 | { |
1931 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1932 | NULL,NULL); |
1933 | } |
1934 | |
1935 | /* |
1936 | * Taint values can only be increased |
1937 | * This means we can safely use a temporary. |
1938 | */ |
1939 | static int proc_taint(struct ctl_table *table, int write, |
1940 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1941 | { |
1942 | struct ctl_table t; |
1943 | unsigned long tmptaint = get_taint(); |
1944 | int err; |
1945 | |
1946 | if (write && !capable(CAP_SYS_ADMIN)) |
1947 | return -EPERM; |
1948 | |
1949 | t = *table; |
1950 | t.data = &tmptaint; |
1951 | err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos); |
1952 | if (err < 0) |
1953 | return err; |
1954 | |
1955 | if (write) { |
1956 | /* |
1957 | * Poor man's atomic or. Not worth adding a primitive |
1958 | * to everyone's atomic.h for this |
1959 | */ |
1960 | int i; |
1961 | for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) { |
1962 | if ((tmptaint >> i) & 1) |
1963 | add_taint(i); |
1964 | } |
1965 | } |
1966 | |
1967 | return err; |
1968 | } |
1969 | |
1970 | #ifdef CONFIG_PRINTK |
1971 | static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
1972 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1973 | { |
1974 | if (write && !capable(CAP_SYS_ADMIN)) |
1975 | return -EPERM; |
1976 | |
1977 | return proc_dointvec_minmax(table, write, buffer, lenp, ppos); |
1978 | } |
1979 | #endif |
1980 | |
1981 | struct do_proc_dointvec_minmax_conv_param { |
1982 | int *min; |
1983 | int *max; |
1984 | }; |
1985 | |
1986 | static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp, |
1987 | int *valp, |
1988 | int write, void *data) |
1989 | { |
1990 | struct do_proc_dointvec_minmax_conv_param *param = data; |
1991 | if (write) { |
1992 | int val = *negp ? -*lvalp : *lvalp; |
1993 | if ((param->min && *param->min > val) || |
1994 | (param->max && *param->max < val)) |
1995 | return -EINVAL; |
1996 | *valp = val; |
1997 | } else { |
1998 | int val = *valp; |
1999 | if (val < 0) { |
2000 | *negp = true; |
2001 | *lvalp = (unsigned long)-val; |
2002 | } else { |
2003 | *negp = false; |
2004 | *lvalp = (unsigned long)val; |
2005 | } |
2006 | } |
2007 | return 0; |
2008 | } |
2009 | |
2010 | /** |
2011 | * proc_dointvec_minmax - read a vector of integers with min/max values |
2012 | * @table: the sysctl table |
2013 | * @write: %TRUE if this is a write to the sysctl file |
2014 | * @buffer: the user buffer |
2015 | * @lenp: the size of the user buffer |
2016 | * @ppos: file position |
2017 | * |
2018 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer |
2019 | * values from/to the user buffer, treated as an ASCII string. |
2020 | * |
2021 | * This routine will ensure the values are within the range specified by |
2022 | * table->extra1 (min) and table->extra2 (max). |
2023 | * |
2024 | * Returns 0 on success. |
2025 | */ |
2026 | int proc_dointvec_minmax(struct ctl_table *table, int write, |
2027 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2028 | { |
2029 | struct do_proc_dointvec_minmax_conv_param param = { |
2030 | .min = (int *) table->extra1, |
2031 | .max = (int *) table->extra2, |
2032 | }; |
2033 | return do_proc_dointvec(table, write, buffer, lenp, ppos, |
2034 | do_proc_dointvec_minmax_conv, ¶m); |
2035 | } |
2036 | |
2037 | static void validate_coredump_safety(void) |
2038 | { |
2039 | if (suid_dumpable == SUID_DUMPABLE_SAFE && |
2040 | core_pattern[0] != '/' && core_pattern[0] != '|') { |
2041 | printk(KERN_WARNING "Unsafe core_pattern used with "\ |
2042 | "suid_dumpable=2. Pipe handler or fully qualified "\ |
2043 | "core dump path required.\n"); |
2044 | } |
2045 | } |
2046 | |
2047 | static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, |
2048 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2049 | { |
2050 | int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos); |
2051 | if (!error) |
2052 | validate_coredump_safety(); |
2053 | return error; |
2054 | } |
2055 | |
2056 | static int proc_dostring_coredump(struct ctl_table *table, int write, |
2057 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2058 | { |
2059 | int error = proc_dostring(table, write, buffer, lenp, ppos); |
2060 | if (!error) |
2061 | validate_coredump_safety(); |
2062 | return error; |
2063 | } |
2064 | |
2065 | static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, |
2066 | void __user *buffer, |
2067 | size_t *lenp, loff_t *ppos, |
2068 | unsigned long convmul, |
2069 | unsigned long convdiv) |
2070 | { |
2071 | unsigned long *i, *min, *max; |
2072 | int vleft, first = 1, err = 0; |
2073 | unsigned long page = 0; |
2074 | size_t left; |
2075 | char *kbuf; |
2076 | |
2077 | if (!data || !table->maxlen || !*lenp || (*ppos && !write)) { |
2078 | *lenp = 0; |
2079 | return 0; |
2080 | } |
2081 | |
2082 | i = (unsigned long *) data; |
2083 | min = (unsigned long *) table->extra1; |
2084 | max = (unsigned long *) table->extra2; |
2085 | vleft = table->maxlen / sizeof(unsigned long); |
2086 | left = *lenp; |
2087 | |
2088 | if (write) { |
2089 | if (left > PAGE_SIZE - 1) |
2090 | left = PAGE_SIZE - 1; |
2091 | page = __get_free_page(GFP_TEMPORARY); |
2092 | kbuf = (char *) page; |
2093 | if (!kbuf) |
2094 | return -ENOMEM; |
2095 | if (copy_from_user(kbuf, buffer, left)) { |
2096 | err = -EFAULT; |
2097 | goto free; |
2098 | } |
2099 | kbuf[left] = 0; |
2100 | } |
2101 | |
2102 | for (; left && vleft--; i++, first = 0) { |
2103 | unsigned long val; |
2104 | |
2105 | if (write) { |
2106 | bool neg; |
2107 | |
2108 | left -= proc_skip_spaces(&kbuf); |
2109 | |
2110 | err = proc_get_long(&kbuf, &left, &val, &neg, |
2111 | proc_wspace_sep, |
2112 | sizeof(proc_wspace_sep), NULL); |
2113 | if (err) |
2114 | break; |
2115 | if (neg) |
2116 | continue; |
2117 | if ((min && val < *min) || (max && val > *max)) |
2118 | continue; |
2119 | *i = val; |
2120 | } else { |
2121 | val = convdiv * (*i) / convmul; |
2122 | if (!first) |
2123 | err = proc_put_char(&buffer, &left, '\t'); |
2124 | err = proc_put_long(&buffer, &left, val, false); |
2125 | if (err) |
2126 | break; |
2127 | } |
2128 | } |
2129 | |
2130 | if (!write && !first && left && !err) |
2131 | err = proc_put_char(&buffer, &left, '\n'); |
2132 | if (write && !err) |
2133 | left -= proc_skip_spaces(&kbuf); |
2134 | free: |
2135 | if (write) { |
2136 | free_page(page); |
2137 | if (first) |
2138 | return err ? : -EINVAL; |
2139 | } |
2140 | *lenp -= left; |
2141 | *ppos += *lenp; |
2142 | return err; |
2143 | } |
2144 | |
2145 | static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, |
2146 | void __user *buffer, |
2147 | size_t *lenp, loff_t *ppos, |
2148 | unsigned long convmul, |
2149 | unsigned long convdiv) |
2150 | { |
2151 | return __do_proc_doulongvec_minmax(table->data, table, write, |
2152 | buffer, lenp, ppos, convmul, convdiv); |
2153 | } |
2154 | |
2155 | /** |
2156 | * proc_doulongvec_minmax - read a vector of long integers with min/max values |
2157 | * @table: the sysctl table |
2158 | * @write: %TRUE if this is a write to the sysctl file |
2159 | * @buffer: the user buffer |
2160 | * @lenp: the size of the user buffer |
2161 | * @ppos: file position |
2162 | * |
2163 | * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long |
2164 | * values from/to the user buffer, treated as an ASCII string. |
2165 | * |
2166 | * This routine will ensure the values are within the range specified by |
2167 | * table->extra1 (min) and table->extra2 (max). |
2168 | * |
2169 | * Returns 0 on success. |
2170 | */ |
2171 | int proc_doulongvec_minmax(struct ctl_table *table, int write, |
2172 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2173 | { |
2174 | return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l); |
2175 | } |
2176 | |
2177 | /** |
2178 | * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values |
2179 | * @table: the sysctl table |
2180 | * @write: %TRUE if this is a write to the sysctl file |
2181 | * @buffer: the user buffer |
2182 | * @lenp: the size of the user buffer |
2183 | * @ppos: file position |
2184 | * |
2185 | * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long |
2186 | * values from/to the user buffer, treated as an ASCII string. The values |
2187 | * are treated as milliseconds, and converted to jiffies when they are stored. |
2188 | * |
2189 | * This routine will ensure the values are within the range specified by |
2190 | * table->extra1 (min) and table->extra2 (max). |
2191 | * |
2192 | * Returns 0 on success. |
2193 | */ |
2194 | int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
2195 | void __user *buffer, |
2196 | size_t *lenp, loff_t *ppos) |
2197 | { |
2198 | return do_proc_doulongvec_minmax(table, write, buffer, |
2199 | lenp, ppos, HZ, 1000l); |
2200 | } |
2201 | |
2202 | |
2203 | static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp, |
2204 | int *valp, |
2205 | int write, void *data) |
2206 | { |
2207 | if (write) { |
2208 | if (*lvalp > LONG_MAX / HZ) |
2209 | return 1; |
2210 | *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ); |
2211 | } else { |
2212 | int val = *valp; |
2213 | unsigned long lval; |
2214 | if (val < 0) { |
2215 | *negp = true; |
2216 | lval = (unsigned long)-val; |
2217 | } else { |
2218 | *negp = false; |
2219 | lval = (unsigned long)val; |
2220 | } |
2221 | *lvalp = lval / HZ; |
2222 | } |
2223 | return 0; |
2224 | } |
2225 | |
2226 | static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp, |
2227 | int *valp, |
2228 | int write, void *data) |
2229 | { |
2230 | if (write) { |
2231 | if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ) |
2232 | return 1; |
2233 | *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp); |
2234 | } else { |
2235 | int val = *valp; |
2236 | unsigned long lval; |
2237 | if (val < 0) { |
2238 | *negp = true; |
2239 | lval = (unsigned long)-val; |
2240 | } else { |
2241 | *negp = false; |
2242 | lval = (unsigned long)val; |
2243 | } |
2244 | *lvalp = jiffies_to_clock_t(lval); |
2245 | } |
2246 | return 0; |
2247 | } |
2248 | |
2249 | static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp, |
2250 | int *valp, |
2251 | int write, void *data) |
2252 | { |
2253 | if (write) { |
2254 | *valp = msecs_to_jiffies(*negp ? -*lvalp : *lvalp); |
2255 | } else { |
2256 | int val = *valp; |
2257 | unsigned long lval; |
2258 | if (val < 0) { |
2259 | *negp = true; |
2260 | lval = (unsigned long)-val; |
2261 | } else { |
2262 | *negp = false; |
2263 | lval = (unsigned long)val; |
2264 | } |
2265 | *lvalp = jiffies_to_msecs(lval); |
2266 | } |
2267 | return 0; |
2268 | } |
2269 | |
2270 | /** |
2271 | * proc_dointvec_jiffies - read a vector of integers as seconds |
2272 | * @table: the sysctl table |
2273 | * @write: %TRUE if this is a write to the sysctl file |
2274 | * @buffer: the user buffer |
2275 | * @lenp: the size of the user buffer |
2276 | * @ppos: file position |
2277 | * |
2278 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer |
2279 | * values from/to the user buffer, treated as an ASCII string. |
2280 | * The values read are assumed to be in seconds, and are converted into |
2281 | * jiffies. |
2282 | * |
2283 | * Returns 0 on success. |
2284 | */ |
2285 | int proc_dointvec_jiffies(struct ctl_table *table, int write, |
2286 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2287 | { |
2288 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
2289 | do_proc_dointvec_jiffies_conv,NULL); |
2290 | } |
2291 | |
2292 | /** |
2293 | * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds |
2294 | * @table: the sysctl table |
2295 | * @write: %TRUE if this is a write to the sysctl file |
2296 | * @buffer: the user buffer |
2297 | * @lenp: the size of the user buffer |
2298 | * @ppos: pointer to the file position |
2299 | * |
2300 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer |
2301 | * values from/to the user buffer, treated as an ASCII string. |
2302 | * The values read are assumed to be in 1/USER_HZ seconds, and |
2303 | * are converted into jiffies. |
2304 | * |
2305 | * Returns 0 on success. |
2306 | */ |
2307 | int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
2308 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2309 | { |
2310 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
2311 | do_proc_dointvec_userhz_jiffies_conv,NULL); |
2312 | } |
2313 | |
2314 | /** |
2315 | * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds |
2316 | * @table: the sysctl table |
2317 | * @write: %TRUE if this is a write to the sysctl file |
2318 | * @buffer: the user buffer |
2319 | * @lenp: the size of the user buffer |
2320 | * @ppos: file position |
2321 | * @ppos: the current position in the file |
2322 | * |
2323 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer |
2324 | * values from/to the user buffer, treated as an ASCII string. |
2325 | * The values read are assumed to be in 1/1000 seconds, and |
2326 | * are converted into jiffies. |
2327 | * |
2328 | * Returns 0 on success. |
2329 | */ |
2330 | int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
2331 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2332 | { |
2333 | return do_proc_dointvec(table, write, buffer, lenp, ppos, |
2334 | do_proc_dointvec_ms_jiffies_conv, NULL); |
2335 | } |
2336 | |
2337 | static int proc_do_cad_pid(struct ctl_table *table, int write, |
2338 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2339 | { |
2340 | struct pid *new_pid; |
2341 | pid_t tmp; |
2342 | int r; |
2343 | |
2344 | tmp = pid_vnr(cad_pid); |
2345 | |
2346 | r = __do_proc_dointvec(&tmp, table, write, buffer, |
2347 | lenp, ppos, NULL, NULL); |
2348 | if (r || !write) |
2349 | return r; |
2350 | |
2351 | new_pid = find_get_pid(tmp); |
2352 | if (!new_pid) |
2353 | return -ESRCH; |
2354 | |
2355 | put_pid(xchg(&cad_pid, new_pid)); |
2356 | return 0; |
2357 | } |
2358 | |
2359 | /** |
2360 | * proc_do_large_bitmap - read/write from/to a large bitmap |
2361 | * @table: the sysctl table |
2362 | * @write: %TRUE if this is a write to the sysctl file |
2363 | * @buffer: the user buffer |
2364 | * @lenp: the size of the user buffer |
2365 | * @ppos: file position |
2366 | * |
2367 | * The bitmap is stored at table->data and the bitmap length (in bits) |
2368 | * in table->maxlen. |
2369 | * |
2370 | * We use a range comma separated format (e.g. 1,3-4,10-10) so that |
2371 | * large bitmaps may be represented in a compact manner. Writing into |
2372 | * the file will clear the bitmap then update it with the given input. |
2373 | * |
2374 | * Returns 0 on success. |
2375 | */ |
2376 | int proc_do_large_bitmap(struct ctl_table *table, int write, |
2377 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2378 | { |
2379 | int err = 0; |
2380 | bool first = 1; |
2381 | size_t left = *lenp; |
2382 | unsigned long bitmap_len = table->maxlen; |
2383 | unsigned long *bitmap = (unsigned long *) table->data; |
2384 | unsigned long *tmp_bitmap = NULL; |
2385 | char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c; |
2386 | |
2387 | if (!bitmap_len || !left || (*ppos && !write)) { |
2388 | *lenp = 0; |
2389 | return 0; |
2390 | } |
2391 | |
2392 | if (write) { |
2393 | unsigned long page = 0; |
2394 | char *kbuf; |
2395 | |
2396 | if (left > PAGE_SIZE - 1) |
2397 | left = PAGE_SIZE - 1; |
2398 | |
2399 | page = __get_free_page(GFP_TEMPORARY); |
2400 | kbuf = (char *) page; |
2401 | if (!kbuf) |
2402 | return -ENOMEM; |
2403 | if (copy_from_user(kbuf, buffer, left)) { |
2404 | free_page(page); |
2405 | return -EFAULT; |
2406 | } |
2407 | kbuf[left] = 0; |
2408 | |
2409 | tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long), |
2410 | GFP_KERNEL); |
2411 | if (!tmp_bitmap) { |
2412 | free_page(page); |
2413 | return -ENOMEM; |
2414 | } |
2415 | proc_skip_char(&kbuf, &left, '\n'); |
2416 | while (!err && left) { |
2417 | unsigned long val_a, val_b; |
2418 | bool neg; |
2419 | |
2420 | err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a, |
2421 | sizeof(tr_a), &c); |
2422 | if (err) |
2423 | break; |
2424 | if (val_a >= bitmap_len || neg) { |
2425 | err = -EINVAL; |
2426 | break; |
2427 | } |
2428 | |
2429 | val_b = val_a; |
2430 | if (left) { |
2431 | kbuf++; |
2432 | left--; |
2433 | } |
2434 | |
2435 | if (c == '-') { |
2436 | err = proc_get_long(&kbuf, &left, &val_b, |
2437 | &neg, tr_b, sizeof(tr_b), |
2438 | &c); |
2439 | if (err) |
2440 | break; |
2441 | if (val_b >= bitmap_len || neg || |
2442 | val_a > val_b) { |
2443 | err = -EINVAL; |
2444 | break; |
2445 | } |
2446 | if (left) { |
2447 | kbuf++; |
2448 | left--; |
2449 | } |
2450 | } |
2451 | |
2452 | bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1); |
2453 | first = 0; |
2454 | proc_skip_char(&kbuf, &left, '\n'); |
2455 | } |
2456 | free_page(page); |
2457 | } else { |
2458 | unsigned long bit_a, bit_b = 0; |
2459 | |
2460 | while (left) { |
2461 | bit_a = find_next_bit(bitmap, bitmap_len, bit_b); |
2462 | if (bit_a >= bitmap_len) |
2463 | break; |
2464 | bit_b = find_next_zero_bit(bitmap, bitmap_len, |
2465 | bit_a + 1) - 1; |
2466 | |
2467 | if (!first) { |
2468 | err = proc_put_char(&buffer, &left, ','); |
2469 | if (err) |
2470 | break; |
2471 | } |
2472 | err = proc_put_long(&buffer, &left, bit_a, false); |
2473 | if (err) |
2474 | break; |
2475 | if (bit_a != bit_b) { |
2476 | err = proc_put_char(&buffer, &left, '-'); |
2477 | if (err) |
2478 | break; |
2479 | err = proc_put_long(&buffer, &left, bit_b, false); |
2480 | if (err) |
2481 | break; |
2482 | } |
2483 | |
2484 | first = 0; bit_b++; |
2485 | } |
2486 | if (!err) |
2487 | err = proc_put_char(&buffer, &left, '\n'); |
2488 | } |
2489 | |
2490 | if (!err) { |
2491 | if (write) { |
2492 | if (*ppos) |
2493 | bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len); |
2494 | else |
2495 | bitmap_copy(bitmap, tmp_bitmap, bitmap_len); |
2496 | } |
2497 | kfree(tmp_bitmap); |
2498 | *lenp -= left; |
2499 | *ppos += *lenp; |
2500 | return 0; |
2501 | } else { |
2502 | kfree(tmp_bitmap); |
2503 | return err; |
2504 | } |
2505 | } |
2506 | |
2507 | #else /* CONFIG_PROC_SYSCTL */ |
2508 | |
2509 | int proc_dostring(struct ctl_table *table, int write, |
2510 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2511 | { |
2512 | return -ENOSYS; |
2513 | } |
2514 | |
2515 | int proc_dointvec(struct ctl_table *table, int write, |
2516 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2517 | { |
2518 | return -ENOSYS; |
2519 | } |
2520 | |
2521 | int proc_dointvec_minmax(struct ctl_table *table, int write, |
2522 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2523 | { |
2524 | return -ENOSYS; |
2525 | } |
2526 | |
2527 | int proc_dointvec_jiffies(struct ctl_table *table, int write, |
2528 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2529 | { |
2530 | return -ENOSYS; |
2531 | } |
2532 | |
2533 | int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
2534 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2535 | { |
2536 | return -ENOSYS; |
2537 | } |
2538 | |
2539 | int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
2540 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2541 | { |
2542 | return -ENOSYS; |
2543 | } |
2544 | |
2545 | int proc_doulongvec_minmax(struct ctl_table *table, int write, |
2546 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2547 | { |
2548 | return -ENOSYS; |
2549 | } |
2550 | |
2551 | int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
2552 | void __user *buffer, |
2553 | size_t *lenp, loff_t *ppos) |
2554 | { |
2555 | return -ENOSYS; |
2556 | } |
2557 | |
2558 | |
2559 | #endif /* CONFIG_PROC_SYSCTL */ |
2560 | |
2561 | /* |
2562 | * No sense putting this after each symbol definition, twice, |
2563 | * exception granted :-) |
2564 | */ |
2565 | EXPORT_SYMBOL(proc_dointvec); |
2566 | EXPORT_SYMBOL(proc_dointvec_jiffies); |
2567 | EXPORT_SYMBOL(proc_dointvec_minmax); |
2568 | EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); |
2569 | EXPORT_SYMBOL(proc_dointvec_ms_jiffies); |
2570 | EXPORT_SYMBOL(proc_dostring); |
2571 | EXPORT_SYMBOL(proc_doulongvec_minmax); |
2572 | EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax); |
2573 |
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v2.6.34-rc5
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