2 * sysctl.c: General linux system control interface
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
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
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
21 #include <linux/module.h>
22 #include <linux/aio.h>
24 #include <linux/swap.h>
25 #include <linux/slab.h>
26 #include <linux/sysctl.h>
27 #include <linux/bitmap.h>
28 #include <linux/signal.h>
29 #include <linux/printk.h>
30 #include <linux/proc_fs.h>
31 #include <linux/security.h>
32 #include <linux/ctype.h>
33 #include <linux/kmemcheck.h>
34 #include <linux/kmemleak.h>
36 #include <linux/init.h>
37 #include <linux/kernel.h>
38 #include <linux/kobject.h>
39 #include <linux/net.h>
40 #include <linux/sysrq.h>
41 #include <linux/highuid.h>
42 #include <linux/writeback.h>
43 #include <linux/ratelimit.h>
44 #include <linux/compaction.h>
45 #include <linux/hugetlb.h>
46 #include <linux/initrd.h>
47 #include <linux/key.h>
48 #include <linux/times.h>
49 #include <linux/limits.h>
50 #include <linux/dcache.h>
51 #include <linux/dnotify.h>
52 #include <linux/syscalls.h>
53 #include <linux/vmstat.h>
54 #include <linux/nfs_fs.h>
55 #include <linux/acpi.h>
56 #include <linux/reboot.h>
57 #include <linux/ftrace.h>
58 #include <linux/perf_event.h>
59 #include <linux/kprobes.h>
60 #include <linux/pipe_fs_i.h>
61 #include <linux/oom.h>
62 #include <linux/kmod.h>
63 #include <linux/capability.h>
64 #include <linux/binfmts.h>
65 #include <linux/sched/sysctl.h>
66 #include <linux/kexec.h>
67 #include <linux/bpf.h>
68 #include <linux/mount.h>
70 #include <asm/uaccess.h>
71 #include <asm/processor.h>
75 #include <asm/stacktrace.h>
79 #include <asm/setup.h>
81 #ifdef CONFIG_BSD_PROCESS_ACCT
82 #include <linux/acct.h>
84 #ifdef CONFIG_RT_MUTEXES
85 #include <linux/rtmutex.h>
87 #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT)
88 #include <linux/lockdep.h>
90 #ifdef CONFIG_CHR_DEV_SG
94 #ifdef CONFIG_LOCKUP_DETECTOR
95 #include <linux/nmi.h>
98 #if defined(CONFIG_SYSCTL)
100 /* External variables not in a header file. */
101 extern int suid_dumpable;
102 #ifdef CONFIG_COREDUMP
103 extern int core_uses_pid;
104 extern char core_pattern[];
105 extern unsigned int core_pipe_limit;
108 extern int extra_free_kbytes;
109 extern int pid_max_min, pid_max_max;
110 extern int percpu_pagelist_fraction;
111 extern int compat_log;
112 extern int latencytop_enabled;
113 extern int sysctl_nr_open_min, sysctl_nr_open_max;
115 extern int sysctl_nr_trim_pages;
118 /* Constants used for minimum and maximum */
119 #ifdef CONFIG_LOCKUP_DETECTOR
120 static int sixty = 60;
123 static int __maybe_unused neg_one = -1;
126 static int __maybe_unused one = 1;
127 static int __maybe_unused two = 2;
128 static int __maybe_unused four = 4;
129 static unsigned long one_ul = 1;
130 static int one_hundred = 100;
132 static int ten_thousand = 10000;
135 /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
136 static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
138 /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
139 static int maxolduid = 65535;
140 static int minolduid;
142 static int ngroups_max = NGROUPS_MAX;
143 static const int cap_last_cap = CAP_LAST_CAP;
145 /*this is needed for proc_doulongvec_minmax of sysctl_hung_task_timeout_secs */
146 #ifdef CONFIG_DETECT_HUNG_TASK
147 static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
150 #ifdef CONFIG_INOTIFY_USER
151 #include <linux/inotify.h>
157 extern int pwrsw_enabled;
160 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
161 extern int unaligned_enabled;
165 extern int unaligned_dump_stack;
168 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
169 extern int no_unaligned_warning;
172 #ifdef CONFIG_PROC_SYSCTL
174 #define SYSCTL_WRITES_LEGACY -1
175 #define SYSCTL_WRITES_WARN 0
176 #define SYSCTL_WRITES_STRICT 1
178 static int sysctl_writes_strict = SYSCTL_WRITES_WARN;
180 static int proc_do_cad_pid(struct ctl_table *table, int write,
181 void __user *buffer, size_t *lenp, loff_t *ppos);
182 static int proc_taint(struct ctl_table *table, int write,
183 void __user *buffer, size_t *lenp, loff_t *ppos);
187 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
188 void __user *buffer, size_t *lenp, loff_t *ppos);
191 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
192 void __user *buffer, size_t *lenp, loff_t *ppos);
193 #ifdef CONFIG_COREDUMP
194 static int proc_dostring_coredump(struct ctl_table *table, int write,
195 void __user *buffer, size_t *lenp, loff_t *ppos);
198 #ifdef CONFIG_MAGIC_SYSRQ
199 /* Note: sysrq code uses it's own private copy */
200 static int __sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE;
202 static int sysrq_sysctl_handler(struct ctl_table *table, int write,
203 void __user *buffer, size_t *lenp,
208 error = proc_dointvec(table, write, buffer, lenp, ppos);
213 sysrq_toggle_support(__sysrq_enabled);
220 static struct ctl_table kern_table[];
221 static struct ctl_table vm_table[];
222 static struct ctl_table fs_table[];
223 static struct ctl_table debug_table[];
224 static struct ctl_table dev_table[];
225 extern struct ctl_table random_table[];
227 extern struct ctl_table epoll_table[];
230 #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
231 int sysctl_legacy_va_layout;
234 /* The default sysctl tables: */
236 static struct ctl_table sysctl_base_table[] = {
238 .procname = "kernel",
255 .child = debug_table,
265 #ifdef CONFIG_SCHED_DEBUG
266 static int min_sched_granularity_ns = 100000; /* 100 usecs */
267 static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
268 static int min_wakeup_granularity_ns; /* 0 usecs */
269 static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
271 static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
272 static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1;
273 #endif /* CONFIG_SMP */
274 #endif /* CONFIG_SCHED_DEBUG */
276 #ifdef CONFIG_COMPACTION
277 static int min_extfrag_threshold;
278 static int max_extfrag_threshold = 1000;
281 static struct ctl_table kern_table[] = {
283 .procname = "sched_child_runs_first",
284 .data = &sysctl_sched_child_runs_first,
285 .maxlen = sizeof(unsigned int),
287 .proc_handler = proc_dointvec,
289 #ifdef CONFIG_SCHED_DEBUG
291 .procname = "sched_min_granularity_ns",
292 .data = &sysctl_sched_min_granularity,
293 .maxlen = sizeof(unsigned int),
295 .proc_handler = sched_proc_update_handler,
296 .extra1 = &min_sched_granularity_ns,
297 .extra2 = &max_sched_granularity_ns,
300 .procname = "sched_latency_ns",
301 .data = &sysctl_sched_latency,
302 .maxlen = sizeof(unsigned int),
304 .proc_handler = sched_proc_update_handler,
305 .extra1 = &min_sched_granularity_ns,
306 .extra2 = &max_sched_granularity_ns,
309 .procname = "sched_is_big_little",
310 .data = &sysctl_sched_is_big_little,
311 .maxlen = sizeof(unsigned int),
313 .proc_handler = proc_dointvec,
315 #ifdef CONFIG_SCHED_WALT
317 .procname = "sched_use_walt_cpu_util",
318 .data = &sysctl_sched_use_walt_cpu_util,
319 .maxlen = sizeof(unsigned int),
321 .proc_handler = proc_dointvec,
324 .procname = "sched_use_walt_task_util",
325 .data = &sysctl_sched_use_walt_task_util,
326 .maxlen = sizeof(unsigned int),
328 .proc_handler = proc_dointvec,
331 .procname = "sched_walt_init_task_load_pct",
332 .data = &sysctl_sched_walt_init_task_load_pct,
333 .maxlen = sizeof(unsigned int),
335 .proc_handler = proc_dointvec,
338 .procname = "sched_walt_cpu_high_irqload",
339 .data = &sysctl_sched_walt_cpu_high_irqload,
340 .maxlen = sizeof(unsigned int),
342 .proc_handler = proc_dointvec,
346 .procname = "sched_sync_hint_enable",
347 .data = &sysctl_sched_sync_hint_enable,
348 .maxlen = sizeof(unsigned int),
350 .proc_handler = proc_dointvec,
353 .procname = "sched_initial_task_util",
354 .data = &sysctl_sched_initial_task_util,
355 .maxlen = sizeof(unsigned int),
357 .proc_handler = proc_dointvec,
360 .procname = "sched_cstate_aware",
361 .data = &sysctl_sched_cstate_aware,
362 .maxlen = sizeof(unsigned int),
364 .proc_handler = proc_dointvec,
367 .procname = "sched_wakeup_granularity_ns",
368 .data = &sysctl_sched_wakeup_granularity,
369 .maxlen = sizeof(unsigned int),
371 .proc_handler = sched_proc_update_handler,
372 .extra1 = &min_wakeup_granularity_ns,
373 .extra2 = &max_wakeup_granularity_ns,
377 .procname = "sched_tunable_scaling",
378 .data = &sysctl_sched_tunable_scaling,
379 .maxlen = sizeof(enum sched_tunable_scaling),
381 .proc_handler = sched_proc_update_handler,
382 .extra1 = &min_sched_tunable_scaling,
383 .extra2 = &max_sched_tunable_scaling,
386 .procname = "sched_migration_cost_ns",
387 .data = &sysctl_sched_migration_cost,
388 .maxlen = sizeof(unsigned int),
390 .proc_handler = proc_dointvec,
393 .procname = "sched_nr_migrate",
394 .data = &sysctl_sched_nr_migrate,
395 .maxlen = sizeof(unsigned int),
397 .proc_handler = proc_dointvec,
400 .procname = "sched_time_avg_ms",
401 .data = &sysctl_sched_time_avg,
402 .maxlen = sizeof(unsigned int),
404 .proc_handler = proc_dointvec,
407 .procname = "sched_shares_window_ns",
408 .data = &sysctl_sched_shares_window,
409 .maxlen = sizeof(unsigned int),
411 .proc_handler = proc_dointvec,
413 #endif /* CONFIG_SMP */
414 #ifdef CONFIG_NUMA_BALANCING
416 .procname = "numa_balancing_scan_delay_ms",
417 .data = &sysctl_numa_balancing_scan_delay,
418 .maxlen = sizeof(unsigned int),
420 .proc_handler = proc_dointvec,
423 .procname = "numa_balancing_scan_period_min_ms",
424 .data = &sysctl_numa_balancing_scan_period_min,
425 .maxlen = sizeof(unsigned int),
427 .proc_handler = proc_dointvec,
430 .procname = "numa_balancing_scan_period_max_ms",
431 .data = &sysctl_numa_balancing_scan_period_max,
432 .maxlen = sizeof(unsigned int),
434 .proc_handler = proc_dointvec,
437 .procname = "numa_balancing_scan_size_mb",
438 .data = &sysctl_numa_balancing_scan_size,
439 .maxlen = sizeof(unsigned int),
441 .proc_handler = proc_dointvec_minmax,
445 .procname = "numa_balancing",
446 .data = NULL, /* filled in by handler */
447 .maxlen = sizeof(unsigned int),
449 .proc_handler = sysctl_numa_balancing,
453 #endif /* CONFIG_NUMA_BALANCING */
454 #endif /* CONFIG_SCHED_DEBUG */
456 .procname = "sched_rt_period_us",
457 .data = &sysctl_sched_rt_period,
458 .maxlen = sizeof(unsigned int),
460 .proc_handler = sched_rt_handler,
463 .procname = "sched_rt_runtime_us",
464 .data = &sysctl_sched_rt_runtime,
465 .maxlen = sizeof(int),
467 .proc_handler = sched_rt_handler,
470 .procname = "sched_rr_timeslice_ms",
471 .data = &sched_rr_timeslice,
472 .maxlen = sizeof(int),
474 .proc_handler = sched_rr_handler,
476 #ifdef CONFIG_SCHED_AUTOGROUP
478 .procname = "sched_autogroup_enabled",
479 .data = &sysctl_sched_autogroup_enabled,
480 .maxlen = sizeof(unsigned int),
482 .proc_handler = proc_dointvec_minmax,
487 #ifdef CONFIG_CFS_BANDWIDTH
489 .procname = "sched_cfs_bandwidth_slice_us",
490 .data = &sysctl_sched_cfs_bandwidth_slice,
491 .maxlen = sizeof(unsigned int),
493 .proc_handler = proc_dointvec_minmax,
497 #ifdef CONFIG_SCHED_TUNE
499 .procname = "sched_cfs_boost",
500 .data = &sysctl_sched_cfs_boost,
501 .maxlen = sizeof(sysctl_sched_cfs_boost),
502 #ifdef CONFIG_CGROUP_SCHEDTUNE
507 .proc_handler = &sysctl_sched_cfs_boost_handler,
509 .extra2 = &one_hundred,
512 #ifdef CONFIG_PROVE_LOCKING
514 .procname = "prove_locking",
515 .data = &prove_locking,
516 .maxlen = sizeof(int),
518 .proc_handler = proc_dointvec,
521 #ifdef CONFIG_LOCK_STAT
523 .procname = "lock_stat",
525 .maxlen = sizeof(int),
527 .proc_handler = proc_dointvec,
532 .data = &panic_timeout,
533 .maxlen = sizeof(int),
535 .proc_handler = proc_dointvec,
537 #ifdef CONFIG_COREDUMP
539 .procname = "core_uses_pid",
540 .data = &core_uses_pid,
541 .maxlen = sizeof(int),
543 .proc_handler = proc_dointvec,
546 .procname = "core_pattern",
547 .data = core_pattern,
548 .maxlen = CORENAME_MAX_SIZE,
550 .proc_handler = proc_dostring_coredump,
553 .procname = "core_pipe_limit",
554 .data = &core_pipe_limit,
555 .maxlen = sizeof(unsigned int),
557 .proc_handler = proc_dointvec,
560 #ifdef CONFIG_PROC_SYSCTL
562 .procname = "tainted",
563 .maxlen = sizeof(long),
565 .proc_handler = proc_taint,
568 .procname = "sysctl_writes_strict",
569 .data = &sysctl_writes_strict,
570 .maxlen = sizeof(int),
572 .proc_handler = proc_dointvec_minmax,
577 #ifdef CONFIG_LATENCYTOP
579 .procname = "latencytop",
580 .data = &latencytop_enabled,
581 .maxlen = sizeof(int),
583 .proc_handler = proc_dointvec,
586 #ifdef CONFIG_BLK_DEV_INITRD
588 .procname = "real-root-dev",
589 .data = &real_root_dev,
590 .maxlen = sizeof(int),
592 .proc_handler = proc_dointvec,
596 .procname = "print-fatal-signals",
597 .data = &print_fatal_signals,
598 .maxlen = sizeof(int),
600 .proc_handler = proc_dointvec,
604 .procname = "reboot-cmd",
605 .data = reboot_command,
608 .proc_handler = proc_dostring,
611 .procname = "stop-a",
612 .data = &stop_a_enabled,
613 .maxlen = sizeof (int),
615 .proc_handler = proc_dointvec,
618 .procname = "scons-poweroff",
619 .data = &scons_pwroff,
620 .maxlen = sizeof (int),
622 .proc_handler = proc_dointvec,
625 #ifdef CONFIG_SPARC64
627 .procname = "tsb-ratio",
628 .data = &sysctl_tsb_ratio,
629 .maxlen = sizeof (int),
631 .proc_handler = proc_dointvec,
636 .procname = "soft-power",
637 .data = &pwrsw_enabled,
638 .maxlen = sizeof (int),
640 .proc_handler = proc_dointvec,
643 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
645 .procname = "unaligned-trap",
646 .data = &unaligned_enabled,
647 .maxlen = sizeof (int),
649 .proc_handler = proc_dointvec,
653 .procname = "ctrl-alt-del",
655 .maxlen = sizeof(int),
657 .proc_handler = proc_dointvec,
659 #ifdef CONFIG_FUNCTION_TRACER
661 .procname = "ftrace_enabled",
662 .data = &ftrace_enabled,
663 .maxlen = sizeof(int),
665 .proc_handler = ftrace_enable_sysctl,
668 #ifdef CONFIG_STACK_TRACER
670 .procname = "stack_tracer_enabled",
671 .data = &stack_tracer_enabled,
672 .maxlen = sizeof(int),
674 .proc_handler = stack_trace_sysctl,
677 #ifdef CONFIG_TRACING
679 .procname = "ftrace_dump_on_oops",
680 .data = &ftrace_dump_on_oops,
681 .maxlen = sizeof(int),
683 .proc_handler = proc_dointvec,
686 .procname = "traceoff_on_warning",
687 .data = &__disable_trace_on_warning,
688 .maxlen = sizeof(__disable_trace_on_warning),
690 .proc_handler = proc_dointvec,
693 .procname = "tracepoint_printk",
694 .data = &tracepoint_printk,
695 .maxlen = sizeof(tracepoint_printk),
697 .proc_handler = proc_dointvec,
700 #ifdef CONFIG_KEXEC_CORE
702 .procname = "kexec_load_disabled",
703 .data = &kexec_load_disabled,
704 .maxlen = sizeof(int),
706 /* only handle a transition from default "0" to "1" */
707 .proc_handler = proc_dointvec_minmax,
712 #ifdef CONFIG_MODULES
714 .procname = "modprobe",
715 .data = &modprobe_path,
716 .maxlen = KMOD_PATH_LEN,
718 .proc_handler = proc_dostring,
721 .procname = "modules_disabled",
722 .data = &modules_disabled,
723 .maxlen = sizeof(int),
725 /* only handle a transition from default "0" to "1" */
726 .proc_handler = proc_dointvec_minmax,
731 #ifdef CONFIG_UEVENT_HELPER
733 .procname = "hotplug",
734 .data = &uevent_helper,
735 .maxlen = UEVENT_HELPER_PATH_LEN,
737 .proc_handler = proc_dostring,
740 #ifdef CONFIG_CHR_DEV_SG
742 .procname = "sg-big-buff",
743 .data = &sg_big_buff,
744 .maxlen = sizeof (int),
746 .proc_handler = proc_dointvec,
749 #ifdef CONFIG_BSD_PROCESS_ACCT
753 .maxlen = 3*sizeof(int),
755 .proc_handler = proc_dointvec,
758 #ifdef CONFIG_MAGIC_SYSRQ
761 .data = &__sysrq_enabled,
762 .maxlen = sizeof (int),
764 .proc_handler = sysrq_sysctl_handler,
767 #ifdef CONFIG_PROC_SYSCTL
769 .procname = "cad_pid",
771 .maxlen = sizeof (int),
773 .proc_handler = proc_do_cad_pid,
777 .procname = "threads-max",
779 .maxlen = sizeof(int),
781 .proc_handler = sysctl_max_threads,
784 .procname = "random",
786 .child = random_table,
789 .procname = "usermodehelper",
791 .child = usermodehelper_table,
794 .procname = "overflowuid",
795 .data = &overflowuid,
796 .maxlen = sizeof(int),
798 .proc_handler = proc_dointvec_minmax,
799 .extra1 = &minolduid,
800 .extra2 = &maxolduid,
803 .procname = "overflowgid",
804 .data = &overflowgid,
805 .maxlen = sizeof(int),
807 .proc_handler = proc_dointvec_minmax,
808 .extra1 = &minolduid,
809 .extra2 = &maxolduid,
812 #ifdef CONFIG_MATHEMU
814 .procname = "ieee_emulation_warnings",
815 .data = &sysctl_ieee_emulation_warnings,
816 .maxlen = sizeof(int),
818 .proc_handler = proc_dointvec,
822 .procname = "userprocess_debug",
823 .data = &show_unhandled_signals,
824 .maxlen = sizeof(int),
826 .proc_handler = proc_dointvec,
830 .procname = "pid_max",
832 .maxlen = sizeof (int),
834 .proc_handler = proc_dointvec_minmax,
835 .extra1 = &pid_max_min,
836 .extra2 = &pid_max_max,
839 .procname = "panic_on_oops",
840 .data = &panic_on_oops,
841 .maxlen = sizeof(int),
843 .proc_handler = proc_dointvec,
845 #if defined CONFIG_PRINTK
847 .procname = "printk",
848 .data = &console_loglevel,
849 .maxlen = 4*sizeof(int),
851 .proc_handler = proc_dointvec,
854 .procname = "printk_ratelimit",
855 .data = &printk_ratelimit_state.interval,
856 .maxlen = sizeof(int),
858 .proc_handler = proc_dointvec_jiffies,
861 .procname = "printk_ratelimit_burst",
862 .data = &printk_ratelimit_state.burst,
863 .maxlen = sizeof(int),
865 .proc_handler = proc_dointvec,
868 .procname = "printk_delay",
869 .data = &printk_delay_msec,
870 .maxlen = sizeof(int),
872 .proc_handler = proc_dointvec_minmax,
874 .extra2 = &ten_thousand,
877 .procname = "dmesg_restrict",
878 .data = &dmesg_restrict,
879 .maxlen = sizeof(int),
881 .proc_handler = proc_dointvec_minmax_sysadmin,
886 .procname = "kptr_restrict",
887 .data = &kptr_restrict,
888 .maxlen = sizeof(int),
890 .proc_handler = proc_dointvec_minmax_sysadmin,
896 .procname = "ngroups_max",
897 .data = &ngroups_max,
898 .maxlen = sizeof (int),
900 .proc_handler = proc_dointvec,
903 .procname = "cap_last_cap",
904 .data = (void *)&cap_last_cap,
905 .maxlen = sizeof(int),
907 .proc_handler = proc_dointvec,
909 #if defined(CONFIG_LOCKUP_DETECTOR)
911 .procname = "watchdog",
912 .data = &watchdog_user_enabled,
913 .maxlen = sizeof (int),
915 .proc_handler = proc_watchdog,
920 .procname = "watchdog_thresh",
921 .data = &watchdog_thresh,
922 .maxlen = sizeof(int),
924 .proc_handler = proc_watchdog_thresh,
929 .procname = "nmi_watchdog",
930 .data = &nmi_watchdog_enabled,
931 .maxlen = sizeof (int),
933 .proc_handler = proc_nmi_watchdog,
935 #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
942 .procname = "soft_watchdog",
943 .data = &soft_watchdog_enabled,
944 .maxlen = sizeof (int),
946 .proc_handler = proc_soft_watchdog,
951 .procname = "watchdog_cpumask",
952 .data = &watchdog_cpumask_bits,
955 .proc_handler = proc_watchdog_cpumask,
958 .procname = "softlockup_panic",
959 .data = &softlockup_panic,
960 .maxlen = sizeof(int),
962 .proc_handler = proc_dointvec_minmax,
966 #ifdef CONFIG_HARDLOCKUP_DETECTOR
968 .procname = "hardlockup_panic",
969 .data = &hardlockup_panic,
970 .maxlen = sizeof(int),
972 .proc_handler = proc_dointvec_minmax,
979 .procname = "softlockup_all_cpu_backtrace",
980 .data = &sysctl_softlockup_all_cpu_backtrace,
981 .maxlen = sizeof(int),
983 .proc_handler = proc_dointvec_minmax,
988 .procname = "hardlockup_all_cpu_backtrace",
989 .data = &sysctl_hardlockup_all_cpu_backtrace,
990 .maxlen = sizeof(int),
992 .proc_handler = proc_dointvec_minmax,
996 #endif /* CONFIG_SMP */
998 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86)
1000 .procname = "unknown_nmi_panic",
1001 .data = &unknown_nmi_panic,
1002 .maxlen = sizeof (int),
1004 .proc_handler = proc_dointvec,
1007 #if defined(CONFIG_X86)
1009 .procname = "panic_on_unrecovered_nmi",
1010 .data = &panic_on_unrecovered_nmi,
1011 .maxlen = sizeof(int),
1013 .proc_handler = proc_dointvec,
1016 .procname = "panic_on_io_nmi",
1017 .data = &panic_on_io_nmi,
1018 .maxlen = sizeof(int),
1020 .proc_handler = proc_dointvec,
1022 #ifdef CONFIG_DEBUG_STACKOVERFLOW
1024 .procname = "panic_on_stackoverflow",
1025 .data = &sysctl_panic_on_stackoverflow,
1026 .maxlen = sizeof(int),
1028 .proc_handler = proc_dointvec,
1032 .procname = "bootloader_type",
1033 .data = &bootloader_type,
1034 .maxlen = sizeof (int),
1036 .proc_handler = proc_dointvec,
1039 .procname = "bootloader_version",
1040 .data = &bootloader_version,
1041 .maxlen = sizeof (int),
1043 .proc_handler = proc_dointvec,
1046 .procname = "kstack_depth_to_print",
1047 .data = &kstack_depth_to_print,
1048 .maxlen = sizeof(int),
1050 .proc_handler = proc_dointvec,
1053 .procname = "io_delay_type",
1054 .data = &io_delay_type,
1055 .maxlen = sizeof(int),
1057 .proc_handler = proc_dointvec,
1060 #if defined(CONFIG_MMU)
1062 .procname = "randomize_va_space",
1063 .data = &randomize_va_space,
1064 .maxlen = sizeof(int),
1066 .proc_handler = proc_dointvec,
1069 #if defined(CONFIG_S390) && defined(CONFIG_SMP)
1071 .procname = "spin_retry",
1072 .data = &spin_retry,
1073 .maxlen = sizeof (int),
1075 .proc_handler = proc_dointvec,
1078 #if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86)
1080 .procname = "acpi_video_flags",
1081 .data = &acpi_realmode_flags,
1082 .maxlen = sizeof (unsigned long),
1084 .proc_handler = proc_doulongvec_minmax,
1087 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
1089 .procname = "ignore-unaligned-usertrap",
1090 .data = &no_unaligned_warning,
1091 .maxlen = sizeof (int),
1093 .proc_handler = proc_dointvec,
1098 .procname = "unaligned-dump-stack",
1099 .data = &unaligned_dump_stack,
1100 .maxlen = sizeof (int),
1102 .proc_handler = proc_dointvec,
1105 #ifdef CONFIG_DETECT_HUNG_TASK
1107 .procname = "hung_task_panic",
1108 .data = &sysctl_hung_task_panic,
1109 .maxlen = sizeof(int),
1111 .proc_handler = proc_dointvec_minmax,
1116 .procname = "hung_task_check_count",
1117 .data = &sysctl_hung_task_check_count,
1118 .maxlen = sizeof(int),
1120 .proc_handler = proc_dointvec_minmax,
1124 .procname = "hung_task_timeout_secs",
1125 .data = &sysctl_hung_task_timeout_secs,
1126 .maxlen = sizeof(unsigned long),
1128 .proc_handler = proc_dohung_task_timeout_secs,
1129 .extra2 = &hung_task_timeout_max,
1132 .procname = "hung_task_warnings",
1133 .data = &sysctl_hung_task_warnings,
1134 .maxlen = sizeof(int),
1136 .proc_handler = proc_dointvec_minmax,
1140 #ifdef CONFIG_COMPAT
1142 .procname = "compat-log",
1143 .data = &compat_log,
1144 .maxlen = sizeof (int),
1146 .proc_handler = proc_dointvec,
1149 #ifdef CONFIG_RT_MUTEXES
1151 .procname = "max_lock_depth",
1152 .data = &max_lock_depth,
1153 .maxlen = sizeof(int),
1155 .proc_handler = proc_dointvec,
1159 .procname = "poweroff_cmd",
1160 .data = &poweroff_cmd,
1161 .maxlen = POWEROFF_CMD_PATH_LEN,
1163 .proc_handler = proc_dostring,
1169 .child = key_sysctls,
1172 #ifdef CONFIG_PERF_EVENTS
1174 * User-space scripts rely on the existence of this file
1175 * as a feature check for perf_events being enabled.
1177 * So it's an ABI, do not remove!
1180 .procname = "perf_event_paranoid",
1181 .data = &sysctl_perf_event_paranoid,
1182 .maxlen = sizeof(sysctl_perf_event_paranoid),
1184 .proc_handler = proc_dointvec,
1187 .procname = "perf_event_mlock_kb",
1188 .data = &sysctl_perf_event_mlock,
1189 .maxlen = sizeof(sysctl_perf_event_mlock),
1191 .proc_handler = proc_dointvec,
1194 .procname = "perf_event_max_sample_rate",
1195 .data = &sysctl_perf_event_sample_rate,
1196 .maxlen = sizeof(sysctl_perf_event_sample_rate),
1198 .proc_handler = perf_proc_update_handler,
1202 .procname = "perf_cpu_time_max_percent",
1203 .data = &sysctl_perf_cpu_time_max_percent,
1204 .maxlen = sizeof(sysctl_perf_cpu_time_max_percent),
1206 .proc_handler = perf_cpu_time_max_percent_handler,
1208 .extra2 = &one_hundred,
1211 #ifdef CONFIG_KMEMCHECK
1213 .procname = "kmemcheck",
1214 .data = &kmemcheck_enabled,
1215 .maxlen = sizeof(int),
1217 .proc_handler = proc_dointvec,
1221 .procname = "panic_on_warn",
1222 .data = &panic_on_warn,
1223 .maxlen = sizeof(int),
1225 .proc_handler = proc_dointvec_minmax,
1229 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
1231 .procname = "timer_migration",
1232 .data = &sysctl_timer_migration,
1233 .maxlen = sizeof(unsigned int),
1235 .proc_handler = timer_migration_handler,
1238 #ifdef CONFIG_BPF_SYSCALL
1240 .procname = "unprivileged_bpf_disabled",
1241 .data = &sysctl_unprivileged_bpf_disabled,
1242 .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
1244 /* only handle a transition from default "0" to "1" */
1245 .proc_handler = proc_dointvec_minmax,
1253 static struct ctl_table vm_table[] = {
1255 .procname = "overcommit_memory",
1256 .data = &sysctl_overcommit_memory,
1257 .maxlen = sizeof(sysctl_overcommit_memory),
1259 .proc_handler = proc_dointvec_minmax,
1264 .procname = "panic_on_oom",
1265 .data = &sysctl_panic_on_oom,
1266 .maxlen = sizeof(sysctl_panic_on_oom),
1268 .proc_handler = proc_dointvec_minmax,
1273 .procname = "oom_kill_allocating_task",
1274 .data = &sysctl_oom_kill_allocating_task,
1275 .maxlen = sizeof(sysctl_oom_kill_allocating_task),
1277 .proc_handler = proc_dointvec,
1280 .procname = "oom_dump_tasks",
1281 .data = &sysctl_oom_dump_tasks,
1282 .maxlen = sizeof(sysctl_oom_dump_tasks),
1284 .proc_handler = proc_dointvec,
1287 .procname = "overcommit_ratio",
1288 .data = &sysctl_overcommit_ratio,
1289 .maxlen = sizeof(sysctl_overcommit_ratio),
1291 .proc_handler = overcommit_ratio_handler,
1294 .procname = "overcommit_kbytes",
1295 .data = &sysctl_overcommit_kbytes,
1296 .maxlen = sizeof(sysctl_overcommit_kbytes),
1298 .proc_handler = overcommit_kbytes_handler,
1301 .procname = "page-cluster",
1302 .data = &page_cluster,
1303 .maxlen = sizeof(int),
1305 .proc_handler = proc_dointvec_minmax,
1309 .procname = "dirty_background_ratio",
1310 .data = &dirty_background_ratio,
1311 .maxlen = sizeof(dirty_background_ratio),
1313 .proc_handler = dirty_background_ratio_handler,
1315 .extra2 = &one_hundred,
1318 .procname = "dirty_background_bytes",
1319 .data = &dirty_background_bytes,
1320 .maxlen = sizeof(dirty_background_bytes),
1322 .proc_handler = dirty_background_bytes_handler,
1326 .procname = "dirty_ratio",
1327 .data = &vm_dirty_ratio,
1328 .maxlen = sizeof(vm_dirty_ratio),
1330 .proc_handler = dirty_ratio_handler,
1332 .extra2 = &one_hundred,
1335 .procname = "dirty_bytes",
1336 .data = &vm_dirty_bytes,
1337 .maxlen = sizeof(vm_dirty_bytes),
1339 .proc_handler = dirty_bytes_handler,
1340 .extra1 = &dirty_bytes_min,
1343 .procname = "dirty_writeback_centisecs",
1344 .data = &dirty_writeback_interval,
1345 .maxlen = sizeof(dirty_writeback_interval),
1347 .proc_handler = dirty_writeback_centisecs_handler,
1350 .procname = "dirty_expire_centisecs",
1351 .data = &dirty_expire_interval,
1352 .maxlen = sizeof(dirty_expire_interval),
1354 .proc_handler = proc_dointvec_minmax,
1358 .procname = "dirtytime_expire_seconds",
1359 .data = &dirtytime_expire_interval,
1360 .maxlen = sizeof(dirty_expire_interval),
1362 .proc_handler = dirtytime_interval_handler,
1366 .procname = "nr_pdflush_threads",
1367 .mode = 0444 /* read-only */,
1368 .proc_handler = pdflush_proc_obsolete,
1371 .procname = "swappiness",
1372 .data = &vm_swappiness,
1373 .maxlen = sizeof(vm_swappiness),
1375 .proc_handler = proc_dointvec_minmax,
1377 .extra2 = &one_hundred,
1379 #ifdef CONFIG_HUGETLB_PAGE
1381 .procname = "nr_hugepages",
1383 .maxlen = sizeof(unsigned long),
1385 .proc_handler = hugetlb_sysctl_handler,
1389 .procname = "nr_hugepages_mempolicy",
1391 .maxlen = sizeof(unsigned long),
1393 .proc_handler = &hugetlb_mempolicy_sysctl_handler,
1397 .procname = "hugetlb_shm_group",
1398 .data = &sysctl_hugetlb_shm_group,
1399 .maxlen = sizeof(gid_t),
1401 .proc_handler = proc_dointvec,
1404 .procname = "hugepages_treat_as_movable",
1405 .data = &hugepages_treat_as_movable,
1406 .maxlen = sizeof(int),
1408 .proc_handler = proc_dointvec,
1411 .procname = "nr_overcommit_hugepages",
1413 .maxlen = sizeof(unsigned long),
1415 .proc_handler = hugetlb_overcommit_handler,
1419 .procname = "lowmem_reserve_ratio",
1420 .data = &sysctl_lowmem_reserve_ratio,
1421 .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
1423 .proc_handler = lowmem_reserve_ratio_sysctl_handler,
1426 .procname = "drop_caches",
1427 .data = &sysctl_drop_caches,
1428 .maxlen = sizeof(int),
1430 .proc_handler = drop_caches_sysctl_handler,
1434 #ifdef CONFIG_COMPACTION
1436 .procname = "compact_memory",
1437 .data = &sysctl_compact_memory,
1438 .maxlen = sizeof(int),
1440 .proc_handler = sysctl_compaction_handler,
1443 .procname = "extfrag_threshold",
1444 .data = &sysctl_extfrag_threshold,
1445 .maxlen = sizeof(int),
1447 .proc_handler = sysctl_extfrag_handler,
1448 .extra1 = &min_extfrag_threshold,
1449 .extra2 = &max_extfrag_threshold,
1452 .procname = "compact_unevictable_allowed",
1453 .data = &sysctl_compact_unevictable_allowed,
1454 .maxlen = sizeof(int),
1456 .proc_handler = proc_dointvec,
1461 #endif /* CONFIG_COMPACTION */
1463 .procname = "min_free_kbytes",
1464 .data = &min_free_kbytes,
1465 .maxlen = sizeof(min_free_kbytes),
1467 .proc_handler = min_free_kbytes_sysctl_handler,
1471 .procname = "extra_free_kbytes",
1472 .data = &extra_free_kbytes,
1473 .maxlen = sizeof(extra_free_kbytes),
1475 .proc_handler = min_free_kbytes_sysctl_handler,
1479 .procname = "percpu_pagelist_fraction",
1480 .data = &percpu_pagelist_fraction,
1481 .maxlen = sizeof(percpu_pagelist_fraction),
1483 .proc_handler = percpu_pagelist_fraction_sysctl_handler,
1488 .procname = "max_map_count",
1489 .data = &sysctl_max_map_count,
1490 .maxlen = sizeof(sysctl_max_map_count),
1492 .proc_handler = proc_dointvec_minmax,
1497 .procname = "nr_trim_pages",
1498 .data = &sysctl_nr_trim_pages,
1499 .maxlen = sizeof(sysctl_nr_trim_pages),
1501 .proc_handler = proc_dointvec_minmax,
1506 .procname = "laptop_mode",
1507 .data = &laptop_mode,
1508 .maxlen = sizeof(laptop_mode),
1510 .proc_handler = proc_dointvec_jiffies,
1513 .procname = "block_dump",
1514 .data = &block_dump,
1515 .maxlen = sizeof(block_dump),
1517 .proc_handler = proc_dointvec,
1521 .procname = "vfs_cache_pressure",
1522 .data = &sysctl_vfs_cache_pressure,
1523 .maxlen = sizeof(sysctl_vfs_cache_pressure),
1525 .proc_handler = proc_dointvec,
1528 #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
1530 .procname = "legacy_va_layout",
1531 .data = &sysctl_legacy_va_layout,
1532 .maxlen = sizeof(sysctl_legacy_va_layout),
1534 .proc_handler = proc_dointvec,
1540 .procname = "zone_reclaim_mode",
1541 .data = &zone_reclaim_mode,
1542 .maxlen = sizeof(zone_reclaim_mode),
1544 .proc_handler = proc_dointvec,
1548 .procname = "min_unmapped_ratio",
1549 .data = &sysctl_min_unmapped_ratio,
1550 .maxlen = sizeof(sysctl_min_unmapped_ratio),
1552 .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
1554 .extra2 = &one_hundred,
1557 .procname = "min_slab_ratio",
1558 .data = &sysctl_min_slab_ratio,
1559 .maxlen = sizeof(sysctl_min_slab_ratio),
1561 .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
1563 .extra2 = &one_hundred,
1568 .procname = "stat_interval",
1569 .data = &sysctl_stat_interval,
1570 .maxlen = sizeof(sysctl_stat_interval),
1572 .proc_handler = proc_dointvec_jiffies,
1577 .procname = "mmap_min_addr",
1578 .data = &dac_mmap_min_addr,
1579 .maxlen = sizeof(unsigned long),
1581 .proc_handler = mmap_min_addr_handler,
1586 .procname = "numa_zonelist_order",
1587 .data = &numa_zonelist_order,
1588 .maxlen = NUMA_ZONELIST_ORDER_LEN,
1590 .proc_handler = numa_zonelist_order_handler,
1593 #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \
1594 (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL))
1596 .procname = "vdso_enabled",
1597 #ifdef CONFIG_X86_32
1598 .data = &vdso32_enabled,
1599 .maxlen = sizeof(vdso32_enabled),
1601 .data = &vdso_enabled,
1602 .maxlen = sizeof(vdso_enabled),
1605 .proc_handler = proc_dointvec,
1609 #ifdef CONFIG_HIGHMEM
1611 .procname = "highmem_is_dirtyable",
1612 .data = &vm_highmem_is_dirtyable,
1613 .maxlen = sizeof(vm_highmem_is_dirtyable),
1615 .proc_handler = proc_dointvec_minmax,
1620 #ifdef CONFIG_MEMORY_FAILURE
1622 .procname = "memory_failure_early_kill",
1623 .data = &sysctl_memory_failure_early_kill,
1624 .maxlen = sizeof(sysctl_memory_failure_early_kill),
1626 .proc_handler = proc_dointvec_minmax,
1631 .procname = "memory_failure_recovery",
1632 .data = &sysctl_memory_failure_recovery,
1633 .maxlen = sizeof(sysctl_memory_failure_recovery),
1635 .proc_handler = proc_dointvec_minmax,
1641 .procname = "user_reserve_kbytes",
1642 .data = &sysctl_user_reserve_kbytes,
1643 .maxlen = sizeof(sysctl_user_reserve_kbytes),
1645 .proc_handler = proc_doulongvec_minmax,
1648 .procname = "admin_reserve_kbytes",
1649 .data = &sysctl_admin_reserve_kbytes,
1650 .maxlen = sizeof(sysctl_admin_reserve_kbytes),
1652 .proc_handler = proc_doulongvec_minmax,
1654 #ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS
1656 .procname = "mmap_rnd_bits",
1657 .data = &mmap_rnd_bits,
1658 .maxlen = sizeof(mmap_rnd_bits),
1660 .proc_handler = proc_dointvec_minmax,
1661 .extra1 = (void *)&mmap_rnd_bits_min,
1662 .extra2 = (void *)&mmap_rnd_bits_max,
1665 #ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS
1667 .procname = "mmap_rnd_compat_bits",
1668 .data = &mmap_rnd_compat_bits,
1669 .maxlen = sizeof(mmap_rnd_compat_bits),
1671 .proc_handler = proc_dointvec_minmax,
1672 .extra1 = (void *)&mmap_rnd_compat_bits_min,
1673 .extra2 = (void *)&mmap_rnd_compat_bits_max,
1679 static struct ctl_table fs_table[] = {
1681 .procname = "inode-nr",
1682 .data = &inodes_stat,
1683 .maxlen = 2*sizeof(long),
1685 .proc_handler = proc_nr_inodes,
1688 .procname = "inode-state",
1689 .data = &inodes_stat,
1690 .maxlen = 7*sizeof(long),
1692 .proc_handler = proc_nr_inodes,
1695 .procname = "file-nr",
1696 .data = &files_stat,
1697 .maxlen = sizeof(files_stat),
1699 .proc_handler = proc_nr_files,
1702 .procname = "file-max",
1703 .data = &files_stat.max_files,
1704 .maxlen = sizeof(files_stat.max_files),
1706 .proc_handler = proc_doulongvec_minmax,
1709 .procname = "nr_open",
1710 .data = &sysctl_nr_open,
1711 .maxlen = sizeof(int),
1713 .proc_handler = proc_dointvec_minmax,
1714 .extra1 = &sysctl_nr_open_min,
1715 .extra2 = &sysctl_nr_open_max,
1718 .procname = "dentry-state",
1719 .data = &dentry_stat,
1720 .maxlen = 6*sizeof(long),
1722 .proc_handler = proc_nr_dentry,
1725 .procname = "overflowuid",
1726 .data = &fs_overflowuid,
1727 .maxlen = sizeof(int),
1729 .proc_handler = proc_dointvec_minmax,
1730 .extra1 = &minolduid,
1731 .extra2 = &maxolduid,
1734 .procname = "overflowgid",
1735 .data = &fs_overflowgid,
1736 .maxlen = sizeof(int),
1738 .proc_handler = proc_dointvec_minmax,
1739 .extra1 = &minolduid,
1740 .extra2 = &maxolduid,
1742 #ifdef CONFIG_FILE_LOCKING
1744 .procname = "leases-enable",
1745 .data = &leases_enable,
1746 .maxlen = sizeof(int),
1748 .proc_handler = proc_dointvec,
1751 #ifdef CONFIG_DNOTIFY
1753 .procname = "dir-notify-enable",
1754 .data = &dir_notify_enable,
1755 .maxlen = sizeof(int),
1757 .proc_handler = proc_dointvec,
1761 #ifdef CONFIG_FILE_LOCKING
1763 .procname = "lease-break-time",
1764 .data = &lease_break_time,
1765 .maxlen = sizeof(int),
1767 .proc_handler = proc_dointvec,
1772 .procname = "aio-nr",
1774 .maxlen = sizeof(aio_nr),
1776 .proc_handler = proc_doulongvec_minmax,
1779 .procname = "aio-max-nr",
1780 .data = &aio_max_nr,
1781 .maxlen = sizeof(aio_max_nr),
1783 .proc_handler = proc_doulongvec_minmax,
1785 #endif /* CONFIG_AIO */
1786 #ifdef CONFIG_INOTIFY_USER
1788 .procname = "inotify",
1790 .child = inotify_table,
1795 .procname = "epoll",
1797 .child = epoll_table,
1802 .procname = "protected_symlinks",
1803 .data = &sysctl_protected_symlinks,
1804 .maxlen = sizeof(int),
1806 .proc_handler = proc_dointvec_minmax,
1811 .procname = "protected_hardlinks",
1812 .data = &sysctl_protected_hardlinks,
1813 .maxlen = sizeof(int),
1815 .proc_handler = proc_dointvec_minmax,
1820 .procname = "suid_dumpable",
1821 .data = &suid_dumpable,
1822 .maxlen = sizeof(int),
1824 .proc_handler = proc_dointvec_minmax_coredump,
1828 #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
1830 .procname = "binfmt_misc",
1832 .child = sysctl_mount_point,
1836 .procname = "pipe-max-size",
1837 .data = &pipe_max_size,
1838 .maxlen = sizeof(int),
1840 .proc_handler = &pipe_proc_fn,
1841 .extra1 = &pipe_min_size,
1844 .procname = "pipe-user-pages-hard",
1845 .data = &pipe_user_pages_hard,
1846 .maxlen = sizeof(pipe_user_pages_hard),
1848 .proc_handler = proc_doulongvec_minmax,
1851 .procname = "pipe-user-pages-soft",
1852 .data = &pipe_user_pages_soft,
1853 .maxlen = sizeof(pipe_user_pages_soft),
1855 .proc_handler = proc_doulongvec_minmax,
1858 .procname = "mount-max",
1859 .data = &sysctl_mount_max,
1860 .maxlen = sizeof(unsigned int),
1862 .proc_handler = proc_dointvec_minmax,
1868 static struct ctl_table debug_table[] = {
1869 #ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
1871 .procname = "exception-trace",
1872 .data = &show_unhandled_signals,
1873 .maxlen = sizeof(int),
1875 .proc_handler = proc_dointvec
1878 #if defined(CONFIG_OPTPROBES)
1880 .procname = "kprobes-optimization",
1881 .data = &sysctl_kprobes_optimization,
1882 .maxlen = sizeof(int),
1884 .proc_handler = proc_kprobes_optimization_handler,
1892 static struct ctl_table dev_table[] = {
1896 int __init sysctl_init(void)
1898 struct ctl_table_header *hdr;
1900 hdr = register_sysctl_table(sysctl_base_table);
1901 kmemleak_not_leak(hdr);
1905 #endif /* CONFIG_SYSCTL */
1911 #ifdef CONFIG_PROC_SYSCTL
1913 static int _proc_do_string(char *data, int maxlen, int write,
1914 char __user *buffer,
1915 size_t *lenp, loff_t *ppos)
1921 if (!data || !maxlen || !*lenp) {
1927 if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) {
1928 /* Only continue writes not past the end of buffer. */
1930 if (len > maxlen - 1)
1937 /* Start writing from beginning of buffer. */
1943 while ((p - buffer) < *lenp && len < maxlen - 1) {
1944 if (get_user(c, p++))
1946 if (c == 0 || c == '\n')
1967 if (copy_to_user(buffer, data, len))
1970 if (put_user('\n', buffer + len))
1980 static void warn_sysctl_write(struct ctl_table *table)
1982 pr_warn_once("%s wrote to %s when file position was not 0!\n"
1983 "This will not be supported in the future. To silence this\n"
1984 "warning, set kernel.sysctl_writes_strict = -1\n",
1985 current->comm, table->procname);
1989 * proc_dostring - read a string sysctl
1990 * @table: the sysctl table
1991 * @write: %TRUE if this is a write to the sysctl file
1992 * @buffer: the user buffer
1993 * @lenp: the size of the user buffer
1994 * @ppos: file position
1996 * Reads/writes a string from/to the user buffer. If the kernel
1997 * buffer provided is not large enough to hold the string, the
1998 * string is truncated. The copied string is %NULL-terminated.
1999 * If the string is being read by the user process, it is copied
2000 * and a newline '\n' is added. It is truncated if the buffer is
2003 * Returns 0 on success.
2005 int proc_dostring(struct ctl_table *table, int write,
2006 void __user *buffer, size_t *lenp, loff_t *ppos)
2008 if (write && *ppos && sysctl_writes_strict == SYSCTL_WRITES_WARN)
2009 warn_sysctl_write(table);
2011 return _proc_do_string((char *)(table->data), table->maxlen, write,
2012 (char __user *)buffer, lenp, ppos);
2015 static size_t proc_skip_spaces(char **buf)
2018 char *tmp = skip_spaces(*buf);
2024 static void proc_skip_char(char **buf, size_t *size, const char v)
2034 #define TMPBUFLEN 22
2036 * proc_get_long - reads an ASCII formatted integer from a user buffer
2038 * @buf: a kernel buffer
2039 * @size: size of the kernel buffer
2040 * @val: this is where the number will be stored
2041 * @neg: set to %TRUE if number is negative
2042 * @perm_tr: a vector which contains the allowed trailers
2043 * @perm_tr_len: size of the perm_tr vector
2044 * @tr: pointer to store the trailer character
2046 * In case of success %0 is returned and @buf and @size are updated with
2047 * the amount of bytes read. If @tr is non-NULL and a trailing
2048 * character exists (size is non-zero after returning from this
2049 * function), @tr is updated with the trailing character.
2051 static int proc_get_long(char **buf, size_t *size,
2052 unsigned long *val, bool *neg,
2053 const char *perm_tr, unsigned perm_tr_len, char *tr)
2056 char *p, tmp[TMPBUFLEN];
2062 if (len > TMPBUFLEN - 1)
2063 len = TMPBUFLEN - 1;
2065 memcpy(tmp, *buf, len);
2069 if (*p == '-' && *size > 1) {
2077 *val = simple_strtoul(p, &p, 0);
2081 /* We don't know if the next char is whitespace thus we may accept
2082 * invalid integers (e.g. 1234...a) or two integers instead of one
2083 * (e.g. 123...1). So lets not allow such large numbers. */
2084 if (len == TMPBUFLEN - 1)
2087 if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len))
2090 if (tr && (len < *size))
2100 * proc_put_long - converts an integer to a decimal ASCII formatted string
2102 * @buf: the user buffer
2103 * @size: the size of the user buffer
2104 * @val: the integer to be converted
2105 * @neg: sign of the number, %TRUE for negative
2107 * In case of success %0 is returned and @buf and @size are updated with
2108 * the amount of bytes written.
2110 static int proc_put_long(void __user **buf, size_t *size, unsigned long val,
2114 char tmp[TMPBUFLEN], *p = tmp;
2116 sprintf(p, "%s%lu", neg ? "-" : "", val);
2120 if (copy_to_user(*buf, tmp, len))
2128 static int proc_put_char(void __user **buf, size_t *size, char c)
2131 char __user **buffer = (char __user **)buf;
2132 if (put_user(c, *buffer))
2134 (*size)--, (*buffer)++;
2140 static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
2142 int write, void *data)
2146 if (*lvalp > (unsigned long) INT_MAX + 1)
2150 if (*lvalp > (unsigned long) INT_MAX)
2158 *lvalp = -(unsigned long)val;
2161 *lvalp = (unsigned long)val;
2167 static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp,
2169 int write, void *data)
2176 unsigned int val = *valp;
2177 *lvalp = (unsigned long)val;
2182 static const char proc_wspace_sep[] = { ' ', '\t', '\n' };
2184 static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
2185 int write, void __user *buffer,
2186 size_t *lenp, loff_t *ppos,
2187 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
2188 int write, void *data),
2191 int *i, vleft, first = 1, err = 0;
2192 unsigned long page = 0;
2196 if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
2201 i = (int *) tbl_data;
2202 vleft = table->maxlen / sizeof(*i);
2206 conv = do_proc_dointvec_conv;
2210 switch (sysctl_writes_strict) {
2211 case SYSCTL_WRITES_STRICT:
2213 case SYSCTL_WRITES_WARN:
2214 warn_sysctl_write(table);
2221 if (left > PAGE_SIZE - 1)
2222 left = PAGE_SIZE - 1;
2223 page = __get_free_page(GFP_TEMPORARY);
2224 kbuf = (char *) page;
2227 if (copy_from_user(kbuf, buffer, left)) {
2234 for (; left && vleft--; i++, first=0) {
2239 left -= proc_skip_spaces(&kbuf);
2243 err = proc_get_long(&kbuf, &left, &lval, &neg,
2245 sizeof(proc_wspace_sep), NULL);
2248 if (conv(&neg, &lval, i, 1, data)) {
2253 if (conv(&neg, &lval, i, 0, data)) {
2258 err = proc_put_char(&buffer, &left, '\t');
2261 err = proc_put_long(&buffer, &left, lval, neg);
2267 if (!write && !first && left && !err)
2268 err = proc_put_char(&buffer, &left, '\n');
2269 if (write && !err && left)
2270 left -= proc_skip_spaces(&kbuf);
2275 return err ? : -EINVAL;
2283 static int do_proc_dointvec(struct ctl_table *table, int write,
2284 void __user *buffer, size_t *lenp, loff_t *ppos,
2285 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
2286 int write, void *data),
2289 return __do_proc_dointvec(table->data, table, write,
2290 buffer, lenp, ppos, conv, data);
2294 * proc_dointvec - read a vector of integers
2295 * @table: the sysctl table
2296 * @write: %TRUE if this is a write to the sysctl file
2297 * @buffer: the user buffer
2298 * @lenp: the size of the user buffer
2299 * @ppos: file position
2301 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2302 * values from/to the user buffer, treated as an ASCII string.
2304 * Returns 0 on success.
2306 int proc_dointvec(struct ctl_table *table, int write,
2307 void __user *buffer, size_t *lenp, loff_t *ppos)
2309 return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL);
2313 * proc_douintvec - read a vector of unsigned integers
2314 * @table: the sysctl table
2315 * @write: %TRUE if this is a write to the sysctl file
2316 * @buffer: the user buffer
2317 * @lenp: the size of the user buffer
2318 * @ppos: file position
2320 * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer
2321 * values from/to the user buffer, treated as an ASCII string.
2323 * Returns 0 on success.
2325 int proc_douintvec(struct ctl_table *table, int write,
2326 void __user *buffer, size_t *lenp, loff_t *ppos)
2328 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2329 do_proc_douintvec_conv, NULL);
2333 * Taint values can only be increased
2334 * This means we can safely use a temporary.
2336 static int proc_taint(struct ctl_table *table, int write,
2337 void __user *buffer, size_t *lenp, loff_t *ppos)
2340 unsigned long tmptaint = get_taint();
2343 if (write && !capable(CAP_SYS_ADMIN))
2348 err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos);
2354 * Poor man's atomic or. Not worth adding a primitive
2355 * to everyone's atomic.h for this
2358 for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) {
2359 if ((tmptaint >> i) & 1)
2360 add_taint(i, LOCKDEP_STILL_OK);
2367 #ifdef CONFIG_PRINTK
2368 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
2369 void __user *buffer, size_t *lenp, loff_t *ppos)
2371 if (write && !capable(CAP_SYS_ADMIN))
2374 return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2378 struct do_proc_dointvec_minmax_conv_param {
2383 static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
2385 int write, void *data)
2387 struct do_proc_dointvec_minmax_conv_param *param = data;
2389 int val = *negp ? -*lvalp : *lvalp;
2390 if ((param->min && *param->min > val) ||
2391 (param->max && *param->max < val))
2398 *lvalp = -(unsigned long)val;
2401 *lvalp = (unsigned long)val;
2408 * proc_dointvec_minmax - read a vector of integers with min/max values
2409 * @table: the sysctl table
2410 * @write: %TRUE if this is a write to the sysctl file
2411 * @buffer: the user buffer
2412 * @lenp: the size of the user buffer
2413 * @ppos: file position
2415 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2416 * values from/to the user buffer, treated as an ASCII string.
2418 * This routine will ensure the values are within the range specified by
2419 * table->extra1 (min) and table->extra2 (max).
2421 * Returns 0 on success.
2423 int proc_dointvec_minmax(struct ctl_table *table, int write,
2424 void __user *buffer, size_t *lenp, loff_t *ppos)
2426 struct do_proc_dointvec_minmax_conv_param param = {
2427 .min = (int *) table->extra1,
2428 .max = (int *) table->extra2,
2430 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2431 do_proc_dointvec_minmax_conv, ¶m);
2434 static void validate_coredump_safety(void)
2436 #ifdef CONFIG_COREDUMP
2437 if (suid_dumpable == SUID_DUMP_ROOT &&
2438 core_pattern[0] != '/' && core_pattern[0] != '|') {
2439 printk(KERN_WARNING "Unsafe core_pattern used with "\
2440 "suid_dumpable=2. Pipe handler or fully qualified "\
2441 "core dump path required.\n");
2446 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
2447 void __user *buffer, size_t *lenp, loff_t *ppos)
2449 int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2451 validate_coredump_safety();
2455 #ifdef CONFIG_COREDUMP
2456 static int proc_dostring_coredump(struct ctl_table *table, int write,
2457 void __user *buffer, size_t *lenp, loff_t *ppos)
2459 int error = proc_dostring(table, write, buffer, lenp, ppos);
2461 validate_coredump_safety();
2466 static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
2467 void __user *buffer,
2468 size_t *lenp, loff_t *ppos,
2469 unsigned long convmul,
2470 unsigned long convdiv)
2472 unsigned long *i, *min, *max;
2473 int vleft, first = 1, err = 0;
2474 unsigned long page = 0;
2478 if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
2483 i = (unsigned long *) data;
2484 min = (unsigned long *) table->extra1;
2485 max = (unsigned long *) table->extra2;
2486 vleft = table->maxlen / sizeof(unsigned long);
2491 switch (sysctl_writes_strict) {
2492 case SYSCTL_WRITES_STRICT:
2494 case SYSCTL_WRITES_WARN:
2495 warn_sysctl_write(table);
2502 if (left > PAGE_SIZE - 1)
2503 left = PAGE_SIZE - 1;
2504 page = __get_free_page(GFP_TEMPORARY);
2505 kbuf = (char *) page;
2508 if (copy_from_user(kbuf, buffer, left)) {
2515 for (; left && vleft--; i++, first = 0) {
2521 left -= proc_skip_spaces(&kbuf);
2523 err = proc_get_long(&kbuf, &left, &val, &neg,
2525 sizeof(proc_wspace_sep), NULL);
2530 val = convmul * val / convdiv;
2531 if ((min && val < *min) || (max && val > *max))
2535 val = convdiv * (*i) / convmul;
2537 err = proc_put_char(&buffer, &left, '\t');
2541 err = proc_put_long(&buffer, &left, val, false);
2547 if (!write && !first && left && !err)
2548 err = proc_put_char(&buffer, &left, '\n');
2550 left -= proc_skip_spaces(&kbuf);
2555 return err ? : -EINVAL;
2563 static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
2564 void __user *buffer,
2565 size_t *lenp, loff_t *ppos,
2566 unsigned long convmul,
2567 unsigned long convdiv)
2569 return __do_proc_doulongvec_minmax(table->data, table, write,
2570 buffer, lenp, ppos, convmul, convdiv);
2574 * proc_doulongvec_minmax - read a vector of long integers with min/max values
2575 * @table: the sysctl table
2576 * @write: %TRUE if this is a write to the sysctl file
2577 * @buffer: the user buffer
2578 * @lenp: the size of the user buffer
2579 * @ppos: file position
2581 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2582 * values from/to the user buffer, treated as an ASCII string.
2584 * This routine will ensure the values are within the range specified by
2585 * table->extra1 (min) and table->extra2 (max).
2587 * Returns 0 on success.
2589 int proc_doulongvec_minmax(struct ctl_table *table, int write,
2590 void __user *buffer, size_t *lenp, loff_t *ppos)
2592 return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l);
2596 * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values
2597 * @table: the sysctl table
2598 * @write: %TRUE if this is a write to the sysctl file
2599 * @buffer: the user buffer
2600 * @lenp: the size of the user buffer
2601 * @ppos: file position
2603 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2604 * values from/to the user buffer, treated as an ASCII string. The values
2605 * are treated as milliseconds, and converted to jiffies when they are stored.
2607 * This routine will ensure the values are within the range specified by
2608 * table->extra1 (min) and table->extra2 (max).
2610 * Returns 0 on success.
2612 int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
2613 void __user *buffer,
2614 size_t *lenp, loff_t *ppos)
2616 return do_proc_doulongvec_minmax(table, write, buffer,
2617 lenp, ppos, HZ, 1000l);
2621 static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp,
2623 int write, void *data)
2626 if (*lvalp > LONG_MAX / HZ)
2628 *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ);
2634 lval = -(unsigned long)val;
2637 lval = (unsigned long)val;
2644 static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp,
2646 int write, void *data)
2649 if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ)
2651 *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp);
2657 lval = -(unsigned long)val;
2660 lval = (unsigned long)val;
2662 *lvalp = jiffies_to_clock_t(lval);
2667 static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp,
2669 int write, void *data)
2672 unsigned long jif = msecs_to_jiffies(*negp ? -*lvalp : *lvalp);
2682 lval = -(unsigned long)val;
2685 lval = (unsigned long)val;
2687 *lvalp = jiffies_to_msecs(lval);
2693 * proc_dointvec_jiffies - read a vector of integers as seconds
2694 * @table: the sysctl table
2695 * @write: %TRUE if this is a write to the sysctl file
2696 * @buffer: the user buffer
2697 * @lenp: the size of the user buffer
2698 * @ppos: file position
2700 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2701 * values from/to the user buffer, treated as an ASCII string.
2702 * The values read are assumed to be in seconds, and are converted into
2705 * Returns 0 on success.
2707 int proc_dointvec_jiffies(struct ctl_table *table, int write,
2708 void __user *buffer, size_t *lenp, loff_t *ppos)
2710 return do_proc_dointvec(table,write,buffer,lenp,ppos,
2711 do_proc_dointvec_jiffies_conv,NULL);
2715 * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds
2716 * @table: the sysctl table
2717 * @write: %TRUE if this is a write to the sysctl file
2718 * @buffer: the user buffer
2719 * @lenp: the size of the user buffer
2720 * @ppos: pointer to the file position
2722 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2723 * values from/to the user buffer, treated as an ASCII string.
2724 * The values read are assumed to be in 1/USER_HZ seconds, and
2725 * are converted into jiffies.
2727 * Returns 0 on success.
2729 int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
2730 void __user *buffer, size_t *lenp, loff_t *ppos)
2732 return do_proc_dointvec(table,write,buffer,lenp,ppos,
2733 do_proc_dointvec_userhz_jiffies_conv,NULL);
2737 * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds
2738 * @table: the sysctl table
2739 * @write: %TRUE if this is a write to the sysctl file
2740 * @buffer: the user buffer
2741 * @lenp: the size of the user buffer
2742 * @ppos: file position
2743 * @ppos: the current position in the file
2745 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2746 * values from/to the user buffer, treated as an ASCII string.
2747 * The values read are assumed to be in 1/1000 seconds, and
2748 * are converted into jiffies.
2750 * Returns 0 on success.
2752 int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
2753 void __user *buffer, size_t *lenp, loff_t *ppos)
2755 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2756 do_proc_dointvec_ms_jiffies_conv, NULL);
2759 static int proc_do_cad_pid(struct ctl_table *table, int write,
2760 void __user *buffer, size_t *lenp, loff_t *ppos)
2762 struct pid *new_pid;
2766 tmp = pid_vnr(cad_pid);
2768 r = __do_proc_dointvec(&tmp, table, write, buffer,
2769 lenp, ppos, NULL, NULL);
2773 new_pid = find_get_pid(tmp);
2777 put_pid(xchg(&cad_pid, new_pid));
2782 * proc_do_large_bitmap - read/write from/to a large bitmap
2783 * @table: the sysctl table
2784 * @write: %TRUE if this is a write to the sysctl file
2785 * @buffer: the user buffer
2786 * @lenp: the size of the user buffer
2787 * @ppos: file position
2789 * The bitmap is stored at table->data and the bitmap length (in bits)
2792 * We use a range comma separated format (e.g. 1,3-4,10-10) so that
2793 * large bitmaps may be represented in a compact manner. Writing into
2794 * the file will clear the bitmap then update it with the given input.
2796 * Returns 0 on success.
2798 int proc_do_large_bitmap(struct ctl_table *table, int write,
2799 void __user *buffer, size_t *lenp, loff_t *ppos)
2803 size_t left = *lenp;
2804 unsigned long bitmap_len = table->maxlen;
2805 unsigned long *bitmap = *(unsigned long **) table->data;
2806 unsigned long *tmp_bitmap = NULL;
2807 char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c;
2809 if (!bitmap || !bitmap_len || !left || (*ppos && !write)) {
2815 unsigned long page = 0;
2818 if (left > PAGE_SIZE - 1)
2819 left = PAGE_SIZE - 1;
2821 page = __get_free_page(GFP_TEMPORARY);
2822 kbuf = (char *) page;
2825 if (copy_from_user(kbuf, buffer, left)) {
2831 tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long),
2837 proc_skip_char(&kbuf, &left, '\n');
2838 while (!err && left) {
2839 unsigned long val_a, val_b;
2842 err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a,
2846 if (val_a >= bitmap_len || neg) {
2858 err = proc_get_long(&kbuf, &left, &val_b,
2859 &neg, tr_b, sizeof(tr_b),
2863 if (val_b >= bitmap_len || neg ||
2874 bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1);
2876 proc_skip_char(&kbuf, &left, '\n');
2880 unsigned long bit_a, bit_b = 0;
2883 bit_a = find_next_bit(bitmap, bitmap_len, bit_b);
2884 if (bit_a >= bitmap_len)
2886 bit_b = find_next_zero_bit(bitmap, bitmap_len,
2890 err = proc_put_char(&buffer, &left, ',');
2894 err = proc_put_long(&buffer, &left, bit_a, false);
2897 if (bit_a != bit_b) {
2898 err = proc_put_char(&buffer, &left, '-');
2901 err = proc_put_long(&buffer, &left, bit_b, false);
2909 err = proc_put_char(&buffer, &left, '\n');
2915 bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len);
2917 bitmap_copy(bitmap, tmp_bitmap, bitmap_len);
2929 #else /* CONFIG_PROC_SYSCTL */
2931 int proc_dostring(struct ctl_table *table, int write,
2932 void __user *buffer, size_t *lenp, loff_t *ppos)
2937 int proc_dointvec(struct ctl_table *table, int write,
2938 void __user *buffer, size_t *lenp, loff_t *ppos)
2943 int proc_douintvec(struct ctl_table *table, int write,
2944 void __user *buffer, size_t *lenp, loff_t *ppos)
2949 int proc_dointvec_minmax(struct ctl_table *table, int write,
2950 void __user *buffer, size_t *lenp, loff_t *ppos)
2955 int proc_dointvec_jiffies(struct ctl_table *table, int write,
2956 void __user *buffer, size_t *lenp, loff_t *ppos)
2961 int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
2962 void __user *buffer, size_t *lenp, loff_t *ppos)
2967 int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
2968 void __user *buffer, size_t *lenp, loff_t *ppos)
2973 int proc_doulongvec_minmax(struct ctl_table *table, int write,
2974 void __user *buffer, size_t *lenp, loff_t *ppos)
2979 int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
2980 void __user *buffer,
2981 size_t *lenp, loff_t *ppos)
2987 #endif /* CONFIG_PROC_SYSCTL */
2990 * No sense putting this after each symbol definition, twice,
2991 * exception granted :-)
2993 EXPORT_SYMBOL(proc_dointvec);
2994 EXPORT_SYMBOL(proc_douintvec);
2995 EXPORT_SYMBOL(proc_dointvec_jiffies);
2996 EXPORT_SYMBOL(proc_dointvec_minmax);
2997 EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
2998 EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
2999 EXPORT_SYMBOL(proc_dostring);
3000 EXPORT_SYMBOL(proc_doulongvec_minmax);
3001 EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);