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_STRICT;
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_sync_hint_enable",
310 .data = &sysctl_sched_sync_hint_enable,
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_initial_task_util",
347 .data = &sysctl_sched_initial_task_util,
348 .maxlen = sizeof(unsigned int),
350 .proc_handler = proc_dointvec,
353 .procname = "sched_cstate_aware",
354 .data = &sysctl_sched_cstate_aware,
355 .maxlen = sizeof(unsigned int),
357 .proc_handler = proc_dointvec,
360 .procname = "sched_wakeup_granularity_ns",
361 .data = &sysctl_sched_wakeup_granularity,
362 .maxlen = sizeof(unsigned int),
364 .proc_handler = sched_proc_update_handler,
365 .extra1 = &min_wakeup_granularity_ns,
366 .extra2 = &max_wakeup_granularity_ns,
370 .procname = "sched_tunable_scaling",
371 .data = &sysctl_sched_tunable_scaling,
372 .maxlen = sizeof(enum sched_tunable_scaling),
374 .proc_handler = sched_proc_update_handler,
375 .extra1 = &min_sched_tunable_scaling,
376 .extra2 = &max_sched_tunable_scaling,
379 .procname = "sched_migration_cost_ns",
380 .data = &sysctl_sched_migration_cost,
381 .maxlen = sizeof(unsigned int),
383 .proc_handler = proc_dointvec,
386 .procname = "sched_nr_migrate",
387 .data = &sysctl_sched_nr_migrate,
388 .maxlen = sizeof(unsigned int),
390 .proc_handler = proc_dointvec,
393 .procname = "sched_time_avg_ms",
394 .data = &sysctl_sched_time_avg,
395 .maxlen = sizeof(unsigned int),
397 .proc_handler = proc_dointvec,
400 .procname = "sched_shares_window_ns",
401 .data = &sysctl_sched_shares_window,
402 .maxlen = sizeof(unsigned int),
404 .proc_handler = proc_dointvec,
406 #endif /* CONFIG_SMP */
407 #ifdef CONFIG_NUMA_BALANCING
409 .procname = "numa_balancing_scan_delay_ms",
410 .data = &sysctl_numa_balancing_scan_delay,
411 .maxlen = sizeof(unsigned int),
413 .proc_handler = proc_dointvec,
416 .procname = "numa_balancing_scan_period_min_ms",
417 .data = &sysctl_numa_balancing_scan_period_min,
418 .maxlen = sizeof(unsigned int),
420 .proc_handler = proc_dointvec,
423 .procname = "numa_balancing_scan_period_max_ms",
424 .data = &sysctl_numa_balancing_scan_period_max,
425 .maxlen = sizeof(unsigned int),
427 .proc_handler = proc_dointvec,
430 .procname = "numa_balancing_scan_size_mb",
431 .data = &sysctl_numa_balancing_scan_size,
432 .maxlen = sizeof(unsigned int),
434 .proc_handler = proc_dointvec_minmax,
438 .procname = "numa_balancing",
439 .data = NULL, /* filled in by handler */
440 .maxlen = sizeof(unsigned int),
442 .proc_handler = sysctl_numa_balancing,
446 #endif /* CONFIG_NUMA_BALANCING */
447 #endif /* CONFIG_SCHED_DEBUG */
449 .procname = "sched_rt_period_us",
450 .data = &sysctl_sched_rt_period,
451 .maxlen = sizeof(unsigned int),
453 .proc_handler = sched_rt_handler,
456 .procname = "sched_rt_runtime_us",
457 .data = &sysctl_sched_rt_runtime,
458 .maxlen = sizeof(int),
460 .proc_handler = sched_rt_handler,
463 .procname = "sched_rr_timeslice_ms",
464 .data = &sched_rr_timeslice,
465 .maxlen = sizeof(int),
467 .proc_handler = sched_rr_handler,
469 #ifdef CONFIG_SCHED_AUTOGROUP
471 .procname = "sched_autogroup_enabled",
472 .data = &sysctl_sched_autogroup_enabled,
473 .maxlen = sizeof(unsigned int),
475 .proc_handler = proc_dointvec_minmax,
480 #ifdef CONFIG_CFS_BANDWIDTH
482 .procname = "sched_cfs_bandwidth_slice_us",
483 .data = &sysctl_sched_cfs_bandwidth_slice,
484 .maxlen = sizeof(unsigned int),
486 .proc_handler = proc_dointvec_minmax,
490 #ifdef CONFIG_SCHED_TUNE
492 .procname = "sched_cfs_boost",
493 .data = &sysctl_sched_cfs_boost,
494 .maxlen = sizeof(sysctl_sched_cfs_boost),
495 #ifdef CONFIG_CGROUP_SCHEDTUNE
500 .proc_handler = &sysctl_sched_cfs_boost_handler,
502 .extra2 = &one_hundred,
505 #ifdef CONFIG_PROVE_LOCKING
507 .procname = "prove_locking",
508 .data = &prove_locking,
509 .maxlen = sizeof(int),
511 .proc_handler = proc_dointvec,
514 #ifdef CONFIG_LOCK_STAT
516 .procname = "lock_stat",
518 .maxlen = sizeof(int),
520 .proc_handler = proc_dointvec,
525 .data = &panic_timeout,
526 .maxlen = sizeof(int),
528 .proc_handler = proc_dointvec,
530 #ifdef CONFIG_COREDUMP
532 .procname = "core_uses_pid",
533 .data = &core_uses_pid,
534 .maxlen = sizeof(int),
536 .proc_handler = proc_dointvec,
539 .procname = "core_pattern",
540 .data = core_pattern,
541 .maxlen = CORENAME_MAX_SIZE,
543 .proc_handler = proc_dostring_coredump,
546 .procname = "core_pipe_limit",
547 .data = &core_pipe_limit,
548 .maxlen = sizeof(unsigned int),
550 .proc_handler = proc_dointvec,
553 #ifdef CONFIG_PROC_SYSCTL
555 .procname = "tainted",
556 .maxlen = sizeof(long),
558 .proc_handler = proc_taint,
561 .procname = "sysctl_writes_strict",
562 .data = &sysctl_writes_strict,
563 .maxlen = sizeof(int),
565 .proc_handler = proc_dointvec_minmax,
570 #ifdef CONFIG_LATENCYTOP
572 .procname = "latencytop",
573 .data = &latencytop_enabled,
574 .maxlen = sizeof(int),
576 .proc_handler = proc_dointvec,
579 #ifdef CONFIG_BLK_DEV_INITRD
581 .procname = "real-root-dev",
582 .data = &real_root_dev,
583 .maxlen = sizeof(int),
585 .proc_handler = proc_dointvec,
589 .procname = "print-fatal-signals",
590 .data = &print_fatal_signals,
591 .maxlen = sizeof(int),
593 .proc_handler = proc_dointvec,
597 .procname = "reboot-cmd",
598 .data = reboot_command,
601 .proc_handler = proc_dostring,
604 .procname = "stop-a",
605 .data = &stop_a_enabled,
606 .maxlen = sizeof (int),
608 .proc_handler = proc_dointvec,
611 .procname = "scons-poweroff",
612 .data = &scons_pwroff,
613 .maxlen = sizeof (int),
615 .proc_handler = proc_dointvec,
618 #ifdef CONFIG_SPARC64
620 .procname = "tsb-ratio",
621 .data = &sysctl_tsb_ratio,
622 .maxlen = sizeof (int),
624 .proc_handler = proc_dointvec,
629 .procname = "soft-power",
630 .data = &pwrsw_enabled,
631 .maxlen = sizeof (int),
633 .proc_handler = proc_dointvec,
636 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
638 .procname = "unaligned-trap",
639 .data = &unaligned_enabled,
640 .maxlen = sizeof (int),
642 .proc_handler = proc_dointvec,
646 .procname = "ctrl-alt-del",
648 .maxlen = sizeof(int),
650 .proc_handler = proc_dointvec,
652 #ifdef CONFIG_FUNCTION_TRACER
654 .procname = "ftrace_enabled",
655 .data = &ftrace_enabled,
656 .maxlen = sizeof(int),
658 .proc_handler = ftrace_enable_sysctl,
661 #ifdef CONFIG_STACK_TRACER
663 .procname = "stack_tracer_enabled",
664 .data = &stack_tracer_enabled,
665 .maxlen = sizeof(int),
667 .proc_handler = stack_trace_sysctl,
670 #ifdef CONFIG_TRACING
672 .procname = "ftrace_dump_on_oops",
673 .data = &ftrace_dump_on_oops,
674 .maxlen = sizeof(int),
676 .proc_handler = proc_dointvec,
679 .procname = "traceoff_on_warning",
680 .data = &__disable_trace_on_warning,
681 .maxlen = sizeof(__disable_trace_on_warning),
683 .proc_handler = proc_dointvec,
686 .procname = "tracepoint_printk",
687 .data = &tracepoint_printk,
688 .maxlen = sizeof(tracepoint_printk),
690 .proc_handler = proc_dointvec,
693 #ifdef CONFIG_KEXEC_CORE
695 .procname = "kexec_load_disabled",
696 .data = &kexec_load_disabled,
697 .maxlen = sizeof(int),
699 /* only handle a transition from default "0" to "1" */
700 .proc_handler = proc_dointvec_minmax,
705 #ifdef CONFIG_MODULES
707 .procname = "modprobe",
708 .data = &modprobe_path,
709 .maxlen = KMOD_PATH_LEN,
711 .proc_handler = proc_dostring,
714 .procname = "modules_disabled",
715 .data = &modules_disabled,
716 .maxlen = sizeof(int),
718 /* only handle a transition from default "0" to "1" */
719 .proc_handler = proc_dointvec_minmax,
724 #ifdef CONFIG_UEVENT_HELPER
726 .procname = "hotplug",
727 .data = &uevent_helper,
728 .maxlen = UEVENT_HELPER_PATH_LEN,
730 .proc_handler = proc_dostring,
733 #ifdef CONFIG_CHR_DEV_SG
735 .procname = "sg-big-buff",
736 .data = &sg_big_buff,
737 .maxlen = sizeof (int),
739 .proc_handler = proc_dointvec,
742 #ifdef CONFIG_BSD_PROCESS_ACCT
746 .maxlen = 3*sizeof(int),
748 .proc_handler = proc_dointvec,
751 #ifdef CONFIG_MAGIC_SYSRQ
754 .data = &__sysrq_enabled,
755 .maxlen = sizeof (int),
757 .proc_handler = sysrq_sysctl_handler,
760 #ifdef CONFIG_PROC_SYSCTL
762 .procname = "cad_pid",
764 .maxlen = sizeof (int),
766 .proc_handler = proc_do_cad_pid,
770 .procname = "threads-max",
772 .maxlen = sizeof(int),
774 .proc_handler = sysctl_max_threads,
777 .procname = "random",
779 .child = random_table,
782 .procname = "usermodehelper",
784 .child = usermodehelper_table,
787 .procname = "overflowuid",
788 .data = &overflowuid,
789 .maxlen = sizeof(int),
791 .proc_handler = proc_dointvec_minmax,
792 .extra1 = &minolduid,
793 .extra2 = &maxolduid,
796 .procname = "overflowgid",
797 .data = &overflowgid,
798 .maxlen = sizeof(int),
800 .proc_handler = proc_dointvec_minmax,
801 .extra1 = &minolduid,
802 .extra2 = &maxolduid,
805 #ifdef CONFIG_MATHEMU
807 .procname = "ieee_emulation_warnings",
808 .data = &sysctl_ieee_emulation_warnings,
809 .maxlen = sizeof(int),
811 .proc_handler = proc_dointvec,
815 .procname = "userprocess_debug",
816 .data = &show_unhandled_signals,
817 .maxlen = sizeof(int),
819 .proc_handler = proc_dointvec,
823 .procname = "pid_max",
825 .maxlen = sizeof (int),
827 .proc_handler = proc_dointvec_minmax,
828 .extra1 = &pid_max_min,
829 .extra2 = &pid_max_max,
832 .procname = "panic_on_oops",
833 .data = &panic_on_oops,
834 .maxlen = sizeof(int),
836 .proc_handler = proc_dointvec,
838 #if defined CONFIG_PRINTK
840 .procname = "printk",
841 .data = &console_loglevel,
842 .maxlen = 4*sizeof(int),
844 .proc_handler = proc_dointvec,
847 .procname = "printk_ratelimit",
848 .data = &printk_ratelimit_state.interval,
849 .maxlen = sizeof(int),
851 .proc_handler = proc_dointvec_jiffies,
854 .procname = "printk_ratelimit_burst",
855 .data = &printk_ratelimit_state.burst,
856 .maxlen = sizeof(int),
858 .proc_handler = proc_dointvec,
861 .procname = "printk_delay",
862 .data = &printk_delay_msec,
863 .maxlen = sizeof(int),
865 .proc_handler = proc_dointvec_minmax,
867 .extra2 = &ten_thousand,
870 .procname = "dmesg_restrict",
871 .data = &dmesg_restrict,
872 .maxlen = sizeof(int),
874 .proc_handler = proc_dointvec_minmax_sysadmin,
879 .procname = "kptr_restrict",
880 .data = &kptr_restrict,
881 .maxlen = sizeof(int),
883 .proc_handler = proc_dointvec_minmax_sysadmin,
889 .procname = "ngroups_max",
890 .data = &ngroups_max,
891 .maxlen = sizeof (int),
893 .proc_handler = proc_dointvec,
896 .procname = "cap_last_cap",
897 .data = (void *)&cap_last_cap,
898 .maxlen = sizeof(int),
900 .proc_handler = proc_dointvec,
902 #if defined(CONFIG_LOCKUP_DETECTOR)
904 .procname = "watchdog",
905 .data = &watchdog_user_enabled,
906 .maxlen = sizeof (int),
908 .proc_handler = proc_watchdog,
913 .procname = "watchdog_thresh",
914 .data = &watchdog_thresh,
915 .maxlen = sizeof(int),
917 .proc_handler = proc_watchdog_thresh,
922 .procname = "nmi_watchdog",
923 .data = &nmi_watchdog_enabled,
924 .maxlen = sizeof (int),
926 .proc_handler = proc_nmi_watchdog,
928 #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
935 .procname = "soft_watchdog",
936 .data = &soft_watchdog_enabled,
937 .maxlen = sizeof (int),
939 .proc_handler = proc_soft_watchdog,
944 .procname = "watchdog_cpumask",
945 .data = &watchdog_cpumask_bits,
948 .proc_handler = proc_watchdog_cpumask,
951 .procname = "softlockup_panic",
952 .data = &softlockup_panic,
953 .maxlen = sizeof(int),
955 .proc_handler = proc_dointvec_minmax,
959 #ifdef CONFIG_HARDLOCKUP_DETECTOR
961 .procname = "hardlockup_panic",
962 .data = &hardlockup_panic,
963 .maxlen = sizeof(int),
965 .proc_handler = proc_dointvec_minmax,
972 .procname = "softlockup_all_cpu_backtrace",
973 .data = &sysctl_softlockup_all_cpu_backtrace,
974 .maxlen = sizeof(int),
976 .proc_handler = proc_dointvec_minmax,
981 .procname = "hardlockup_all_cpu_backtrace",
982 .data = &sysctl_hardlockup_all_cpu_backtrace,
983 .maxlen = sizeof(int),
985 .proc_handler = proc_dointvec_minmax,
989 #endif /* CONFIG_SMP */
991 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86)
993 .procname = "unknown_nmi_panic",
994 .data = &unknown_nmi_panic,
995 .maxlen = sizeof (int),
997 .proc_handler = proc_dointvec,
1000 #if defined(CONFIG_X86)
1002 .procname = "panic_on_unrecovered_nmi",
1003 .data = &panic_on_unrecovered_nmi,
1004 .maxlen = sizeof(int),
1006 .proc_handler = proc_dointvec,
1009 .procname = "panic_on_io_nmi",
1010 .data = &panic_on_io_nmi,
1011 .maxlen = sizeof(int),
1013 .proc_handler = proc_dointvec,
1015 #ifdef CONFIG_DEBUG_STACKOVERFLOW
1017 .procname = "panic_on_stackoverflow",
1018 .data = &sysctl_panic_on_stackoverflow,
1019 .maxlen = sizeof(int),
1021 .proc_handler = proc_dointvec,
1025 .procname = "bootloader_type",
1026 .data = &bootloader_type,
1027 .maxlen = sizeof (int),
1029 .proc_handler = proc_dointvec,
1032 .procname = "bootloader_version",
1033 .data = &bootloader_version,
1034 .maxlen = sizeof (int),
1036 .proc_handler = proc_dointvec,
1039 .procname = "kstack_depth_to_print",
1040 .data = &kstack_depth_to_print,
1041 .maxlen = sizeof(int),
1043 .proc_handler = proc_dointvec,
1046 .procname = "io_delay_type",
1047 .data = &io_delay_type,
1048 .maxlen = sizeof(int),
1050 .proc_handler = proc_dointvec,
1053 #if defined(CONFIG_MMU)
1055 .procname = "randomize_va_space",
1056 .data = &randomize_va_space,
1057 .maxlen = sizeof(int),
1059 .proc_handler = proc_dointvec,
1062 #if defined(CONFIG_S390) && defined(CONFIG_SMP)
1064 .procname = "spin_retry",
1065 .data = &spin_retry,
1066 .maxlen = sizeof (int),
1068 .proc_handler = proc_dointvec,
1071 #if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86)
1073 .procname = "acpi_video_flags",
1074 .data = &acpi_realmode_flags,
1075 .maxlen = sizeof (unsigned long),
1077 .proc_handler = proc_doulongvec_minmax,
1080 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
1082 .procname = "ignore-unaligned-usertrap",
1083 .data = &no_unaligned_warning,
1084 .maxlen = sizeof (int),
1086 .proc_handler = proc_dointvec,
1091 .procname = "unaligned-dump-stack",
1092 .data = &unaligned_dump_stack,
1093 .maxlen = sizeof (int),
1095 .proc_handler = proc_dointvec,
1098 #ifdef CONFIG_DETECT_HUNG_TASK
1100 .procname = "hung_task_panic",
1101 .data = &sysctl_hung_task_panic,
1102 .maxlen = sizeof(int),
1104 .proc_handler = proc_dointvec_minmax,
1109 .procname = "hung_task_check_count",
1110 .data = &sysctl_hung_task_check_count,
1111 .maxlen = sizeof(int),
1113 .proc_handler = proc_dointvec_minmax,
1117 .procname = "hung_task_timeout_secs",
1118 .data = &sysctl_hung_task_timeout_secs,
1119 .maxlen = sizeof(unsigned long),
1121 .proc_handler = proc_dohung_task_timeout_secs,
1122 .extra2 = &hung_task_timeout_max,
1125 .procname = "hung_task_warnings",
1126 .data = &sysctl_hung_task_warnings,
1127 .maxlen = sizeof(int),
1129 .proc_handler = proc_dointvec_minmax,
1133 #ifdef CONFIG_COMPAT
1135 .procname = "compat-log",
1136 .data = &compat_log,
1137 .maxlen = sizeof (int),
1139 .proc_handler = proc_dointvec,
1142 #ifdef CONFIG_RT_MUTEXES
1144 .procname = "max_lock_depth",
1145 .data = &max_lock_depth,
1146 .maxlen = sizeof(int),
1148 .proc_handler = proc_dointvec,
1152 .procname = "poweroff_cmd",
1153 .data = &poweroff_cmd,
1154 .maxlen = POWEROFF_CMD_PATH_LEN,
1156 .proc_handler = proc_dostring,
1162 .child = key_sysctls,
1165 #ifdef CONFIG_PERF_EVENTS
1167 * User-space scripts rely on the existence of this file
1168 * as a feature check for perf_events being enabled.
1170 * So it's an ABI, do not remove!
1173 .procname = "perf_event_paranoid",
1174 .data = &sysctl_perf_event_paranoid,
1175 .maxlen = sizeof(sysctl_perf_event_paranoid),
1177 .proc_handler = proc_dointvec,
1180 .procname = "perf_event_mlock_kb",
1181 .data = &sysctl_perf_event_mlock,
1182 .maxlen = sizeof(sysctl_perf_event_mlock),
1184 .proc_handler = proc_dointvec,
1187 .procname = "perf_event_max_sample_rate",
1188 .data = &sysctl_perf_event_sample_rate,
1189 .maxlen = sizeof(sysctl_perf_event_sample_rate),
1191 .proc_handler = perf_proc_update_handler,
1195 .procname = "perf_cpu_time_max_percent",
1196 .data = &sysctl_perf_cpu_time_max_percent,
1197 .maxlen = sizeof(sysctl_perf_cpu_time_max_percent),
1199 .proc_handler = perf_cpu_time_max_percent_handler,
1201 .extra2 = &one_hundred,
1204 #ifdef CONFIG_KMEMCHECK
1206 .procname = "kmemcheck",
1207 .data = &kmemcheck_enabled,
1208 .maxlen = sizeof(int),
1210 .proc_handler = proc_dointvec,
1214 .procname = "panic_on_warn",
1215 .data = &panic_on_warn,
1216 .maxlen = sizeof(int),
1218 .proc_handler = proc_dointvec_minmax,
1222 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
1224 .procname = "timer_migration",
1225 .data = &sysctl_timer_migration,
1226 .maxlen = sizeof(unsigned int),
1228 .proc_handler = timer_migration_handler,
1231 #ifdef CONFIG_BPF_SYSCALL
1233 .procname = "unprivileged_bpf_disabled",
1234 .data = &sysctl_unprivileged_bpf_disabled,
1235 .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
1237 /* only handle a transition from default "0" to "1" */
1238 .proc_handler = proc_dointvec_minmax,
1246 static struct ctl_table vm_table[] = {
1248 .procname = "overcommit_memory",
1249 .data = &sysctl_overcommit_memory,
1250 .maxlen = sizeof(sysctl_overcommit_memory),
1252 .proc_handler = proc_dointvec_minmax,
1257 .procname = "panic_on_oom",
1258 .data = &sysctl_panic_on_oom,
1259 .maxlen = sizeof(sysctl_panic_on_oom),
1261 .proc_handler = proc_dointvec_minmax,
1266 .procname = "oom_kill_allocating_task",
1267 .data = &sysctl_oom_kill_allocating_task,
1268 .maxlen = sizeof(sysctl_oom_kill_allocating_task),
1270 .proc_handler = proc_dointvec,
1273 .procname = "oom_dump_tasks",
1274 .data = &sysctl_oom_dump_tasks,
1275 .maxlen = sizeof(sysctl_oom_dump_tasks),
1277 .proc_handler = proc_dointvec,
1280 .procname = "overcommit_ratio",
1281 .data = &sysctl_overcommit_ratio,
1282 .maxlen = sizeof(sysctl_overcommit_ratio),
1284 .proc_handler = overcommit_ratio_handler,
1287 .procname = "overcommit_kbytes",
1288 .data = &sysctl_overcommit_kbytes,
1289 .maxlen = sizeof(sysctl_overcommit_kbytes),
1291 .proc_handler = overcommit_kbytes_handler,
1294 .procname = "page-cluster",
1295 .data = &page_cluster,
1296 .maxlen = sizeof(int),
1298 .proc_handler = proc_dointvec_minmax,
1302 .procname = "dirty_background_ratio",
1303 .data = &dirty_background_ratio,
1304 .maxlen = sizeof(dirty_background_ratio),
1306 .proc_handler = dirty_background_ratio_handler,
1308 .extra2 = &one_hundred,
1311 .procname = "dirty_background_bytes",
1312 .data = &dirty_background_bytes,
1313 .maxlen = sizeof(dirty_background_bytes),
1315 .proc_handler = dirty_background_bytes_handler,
1319 .procname = "dirty_ratio",
1320 .data = &vm_dirty_ratio,
1321 .maxlen = sizeof(vm_dirty_ratio),
1323 .proc_handler = dirty_ratio_handler,
1325 .extra2 = &one_hundred,
1328 .procname = "dirty_bytes",
1329 .data = &vm_dirty_bytes,
1330 .maxlen = sizeof(vm_dirty_bytes),
1332 .proc_handler = dirty_bytes_handler,
1333 .extra1 = &dirty_bytes_min,
1336 .procname = "dirty_writeback_centisecs",
1337 .data = &dirty_writeback_interval,
1338 .maxlen = sizeof(dirty_writeback_interval),
1340 .proc_handler = dirty_writeback_centisecs_handler,
1343 .procname = "dirty_expire_centisecs",
1344 .data = &dirty_expire_interval,
1345 .maxlen = sizeof(dirty_expire_interval),
1347 .proc_handler = proc_dointvec_minmax,
1351 .procname = "dirtytime_expire_seconds",
1352 .data = &dirtytime_expire_interval,
1353 .maxlen = sizeof(dirty_expire_interval),
1355 .proc_handler = dirtytime_interval_handler,
1359 .procname = "nr_pdflush_threads",
1360 .mode = 0444 /* read-only */,
1361 .proc_handler = pdflush_proc_obsolete,
1364 .procname = "swappiness",
1365 .data = &vm_swappiness,
1366 .maxlen = sizeof(vm_swappiness),
1368 .proc_handler = proc_dointvec_minmax,
1370 .extra2 = &one_hundred,
1372 #ifdef CONFIG_HUGETLB_PAGE
1374 .procname = "nr_hugepages",
1376 .maxlen = sizeof(unsigned long),
1378 .proc_handler = hugetlb_sysctl_handler,
1382 .procname = "nr_hugepages_mempolicy",
1384 .maxlen = sizeof(unsigned long),
1386 .proc_handler = &hugetlb_mempolicy_sysctl_handler,
1390 .procname = "hugetlb_shm_group",
1391 .data = &sysctl_hugetlb_shm_group,
1392 .maxlen = sizeof(gid_t),
1394 .proc_handler = proc_dointvec,
1397 .procname = "hugepages_treat_as_movable",
1398 .data = &hugepages_treat_as_movable,
1399 .maxlen = sizeof(int),
1401 .proc_handler = proc_dointvec,
1404 .procname = "nr_overcommit_hugepages",
1406 .maxlen = sizeof(unsigned long),
1408 .proc_handler = hugetlb_overcommit_handler,
1412 .procname = "lowmem_reserve_ratio",
1413 .data = &sysctl_lowmem_reserve_ratio,
1414 .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
1416 .proc_handler = lowmem_reserve_ratio_sysctl_handler,
1419 .procname = "drop_caches",
1420 .data = &sysctl_drop_caches,
1421 .maxlen = sizeof(int),
1423 .proc_handler = drop_caches_sysctl_handler,
1427 #ifdef CONFIG_COMPACTION
1429 .procname = "compact_memory",
1430 .data = &sysctl_compact_memory,
1431 .maxlen = sizeof(int),
1433 .proc_handler = sysctl_compaction_handler,
1436 .procname = "extfrag_threshold",
1437 .data = &sysctl_extfrag_threshold,
1438 .maxlen = sizeof(int),
1440 .proc_handler = sysctl_extfrag_handler,
1441 .extra1 = &min_extfrag_threshold,
1442 .extra2 = &max_extfrag_threshold,
1445 .procname = "compact_unevictable_allowed",
1446 .data = &sysctl_compact_unevictable_allowed,
1447 .maxlen = sizeof(int),
1449 .proc_handler = proc_dointvec,
1454 #endif /* CONFIG_COMPACTION */
1456 .procname = "min_free_kbytes",
1457 .data = &min_free_kbytes,
1458 .maxlen = sizeof(min_free_kbytes),
1460 .proc_handler = min_free_kbytes_sysctl_handler,
1464 .procname = "extra_free_kbytes",
1465 .data = &extra_free_kbytes,
1466 .maxlen = sizeof(extra_free_kbytes),
1468 .proc_handler = min_free_kbytes_sysctl_handler,
1472 .procname = "percpu_pagelist_fraction",
1473 .data = &percpu_pagelist_fraction,
1474 .maxlen = sizeof(percpu_pagelist_fraction),
1476 .proc_handler = percpu_pagelist_fraction_sysctl_handler,
1481 .procname = "max_map_count",
1482 .data = &sysctl_max_map_count,
1483 .maxlen = sizeof(sysctl_max_map_count),
1485 .proc_handler = proc_dointvec_minmax,
1490 .procname = "nr_trim_pages",
1491 .data = &sysctl_nr_trim_pages,
1492 .maxlen = sizeof(sysctl_nr_trim_pages),
1494 .proc_handler = proc_dointvec_minmax,
1499 .procname = "laptop_mode",
1500 .data = &laptop_mode,
1501 .maxlen = sizeof(laptop_mode),
1503 .proc_handler = proc_dointvec_jiffies,
1506 .procname = "block_dump",
1507 .data = &block_dump,
1508 .maxlen = sizeof(block_dump),
1510 .proc_handler = proc_dointvec,
1514 .procname = "vfs_cache_pressure",
1515 .data = &sysctl_vfs_cache_pressure,
1516 .maxlen = sizeof(sysctl_vfs_cache_pressure),
1518 .proc_handler = proc_dointvec,
1521 #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
1523 .procname = "legacy_va_layout",
1524 .data = &sysctl_legacy_va_layout,
1525 .maxlen = sizeof(sysctl_legacy_va_layout),
1527 .proc_handler = proc_dointvec,
1533 .procname = "zone_reclaim_mode",
1534 .data = &zone_reclaim_mode,
1535 .maxlen = sizeof(zone_reclaim_mode),
1537 .proc_handler = proc_dointvec,
1541 .procname = "min_unmapped_ratio",
1542 .data = &sysctl_min_unmapped_ratio,
1543 .maxlen = sizeof(sysctl_min_unmapped_ratio),
1545 .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
1547 .extra2 = &one_hundred,
1550 .procname = "min_slab_ratio",
1551 .data = &sysctl_min_slab_ratio,
1552 .maxlen = sizeof(sysctl_min_slab_ratio),
1554 .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
1556 .extra2 = &one_hundred,
1561 .procname = "stat_interval",
1562 .data = &sysctl_stat_interval,
1563 .maxlen = sizeof(sysctl_stat_interval),
1565 .proc_handler = proc_dointvec_jiffies,
1570 .procname = "mmap_min_addr",
1571 .data = &dac_mmap_min_addr,
1572 .maxlen = sizeof(unsigned long),
1574 .proc_handler = mmap_min_addr_handler,
1579 .procname = "numa_zonelist_order",
1580 .data = &numa_zonelist_order,
1581 .maxlen = NUMA_ZONELIST_ORDER_LEN,
1583 .proc_handler = numa_zonelist_order_handler,
1586 #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \
1587 (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL))
1589 .procname = "vdso_enabled",
1590 #ifdef CONFIG_X86_32
1591 .data = &vdso32_enabled,
1592 .maxlen = sizeof(vdso32_enabled),
1594 .data = &vdso_enabled,
1595 .maxlen = sizeof(vdso_enabled),
1598 .proc_handler = proc_dointvec,
1602 #ifdef CONFIG_HIGHMEM
1604 .procname = "highmem_is_dirtyable",
1605 .data = &vm_highmem_is_dirtyable,
1606 .maxlen = sizeof(vm_highmem_is_dirtyable),
1608 .proc_handler = proc_dointvec_minmax,
1613 #ifdef CONFIG_MEMORY_FAILURE
1615 .procname = "memory_failure_early_kill",
1616 .data = &sysctl_memory_failure_early_kill,
1617 .maxlen = sizeof(sysctl_memory_failure_early_kill),
1619 .proc_handler = proc_dointvec_minmax,
1624 .procname = "memory_failure_recovery",
1625 .data = &sysctl_memory_failure_recovery,
1626 .maxlen = sizeof(sysctl_memory_failure_recovery),
1628 .proc_handler = proc_dointvec_minmax,
1634 .procname = "user_reserve_kbytes",
1635 .data = &sysctl_user_reserve_kbytes,
1636 .maxlen = sizeof(sysctl_user_reserve_kbytes),
1638 .proc_handler = proc_doulongvec_minmax,
1641 .procname = "admin_reserve_kbytes",
1642 .data = &sysctl_admin_reserve_kbytes,
1643 .maxlen = sizeof(sysctl_admin_reserve_kbytes),
1645 .proc_handler = proc_doulongvec_minmax,
1647 #ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS
1649 .procname = "mmap_rnd_bits",
1650 .data = &mmap_rnd_bits,
1651 .maxlen = sizeof(mmap_rnd_bits),
1653 .proc_handler = proc_dointvec_minmax,
1654 .extra1 = (void *)&mmap_rnd_bits_min,
1655 .extra2 = (void *)&mmap_rnd_bits_max,
1658 #ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS
1660 .procname = "mmap_rnd_compat_bits",
1661 .data = &mmap_rnd_compat_bits,
1662 .maxlen = sizeof(mmap_rnd_compat_bits),
1664 .proc_handler = proc_dointvec_minmax,
1665 .extra1 = (void *)&mmap_rnd_compat_bits_min,
1666 .extra2 = (void *)&mmap_rnd_compat_bits_max,
1672 static struct ctl_table fs_table[] = {
1674 .procname = "inode-nr",
1675 .data = &inodes_stat,
1676 .maxlen = 2*sizeof(long),
1678 .proc_handler = proc_nr_inodes,
1681 .procname = "inode-state",
1682 .data = &inodes_stat,
1683 .maxlen = 7*sizeof(long),
1685 .proc_handler = proc_nr_inodes,
1688 .procname = "file-nr",
1689 .data = &files_stat,
1690 .maxlen = sizeof(files_stat),
1692 .proc_handler = proc_nr_files,
1695 .procname = "file-max",
1696 .data = &files_stat.max_files,
1697 .maxlen = sizeof(files_stat.max_files),
1699 .proc_handler = proc_doulongvec_minmax,
1702 .procname = "nr_open",
1703 .data = &sysctl_nr_open,
1704 .maxlen = sizeof(int),
1706 .proc_handler = proc_dointvec_minmax,
1707 .extra1 = &sysctl_nr_open_min,
1708 .extra2 = &sysctl_nr_open_max,
1711 .procname = "dentry-state",
1712 .data = &dentry_stat,
1713 .maxlen = 6*sizeof(long),
1715 .proc_handler = proc_nr_dentry,
1718 .procname = "overflowuid",
1719 .data = &fs_overflowuid,
1720 .maxlen = sizeof(int),
1722 .proc_handler = proc_dointvec_minmax,
1723 .extra1 = &minolduid,
1724 .extra2 = &maxolduid,
1727 .procname = "overflowgid",
1728 .data = &fs_overflowgid,
1729 .maxlen = sizeof(int),
1731 .proc_handler = proc_dointvec_minmax,
1732 .extra1 = &minolduid,
1733 .extra2 = &maxolduid,
1735 #ifdef CONFIG_FILE_LOCKING
1737 .procname = "leases-enable",
1738 .data = &leases_enable,
1739 .maxlen = sizeof(int),
1741 .proc_handler = proc_dointvec,
1744 #ifdef CONFIG_DNOTIFY
1746 .procname = "dir-notify-enable",
1747 .data = &dir_notify_enable,
1748 .maxlen = sizeof(int),
1750 .proc_handler = proc_dointvec,
1754 #ifdef CONFIG_FILE_LOCKING
1756 .procname = "lease-break-time",
1757 .data = &lease_break_time,
1758 .maxlen = sizeof(int),
1760 .proc_handler = proc_dointvec,
1765 .procname = "aio-nr",
1767 .maxlen = sizeof(aio_nr),
1769 .proc_handler = proc_doulongvec_minmax,
1772 .procname = "aio-max-nr",
1773 .data = &aio_max_nr,
1774 .maxlen = sizeof(aio_max_nr),
1776 .proc_handler = proc_doulongvec_minmax,
1778 #endif /* CONFIG_AIO */
1779 #ifdef CONFIG_INOTIFY_USER
1781 .procname = "inotify",
1783 .child = inotify_table,
1788 .procname = "epoll",
1790 .child = epoll_table,
1795 .procname = "protected_symlinks",
1796 .data = &sysctl_protected_symlinks,
1797 .maxlen = sizeof(int),
1799 .proc_handler = proc_dointvec_minmax,
1804 .procname = "protected_hardlinks",
1805 .data = &sysctl_protected_hardlinks,
1806 .maxlen = sizeof(int),
1808 .proc_handler = proc_dointvec_minmax,
1813 .procname = "suid_dumpable",
1814 .data = &suid_dumpable,
1815 .maxlen = sizeof(int),
1817 .proc_handler = proc_dointvec_minmax_coredump,
1821 #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
1823 .procname = "binfmt_misc",
1825 .child = sysctl_mount_point,
1829 .procname = "pipe-max-size",
1830 .data = &pipe_max_size,
1831 .maxlen = sizeof(int),
1833 .proc_handler = &pipe_proc_fn,
1834 .extra1 = &pipe_min_size,
1837 .procname = "pipe-user-pages-hard",
1838 .data = &pipe_user_pages_hard,
1839 .maxlen = sizeof(pipe_user_pages_hard),
1841 .proc_handler = proc_doulongvec_minmax,
1844 .procname = "pipe-user-pages-soft",
1845 .data = &pipe_user_pages_soft,
1846 .maxlen = sizeof(pipe_user_pages_soft),
1848 .proc_handler = proc_doulongvec_minmax,
1851 .procname = "mount-max",
1852 .data = &sysctl_mount_max,
1853 .maxlen = sizeof(unsigned int),
1855 .proc_handler = proc_dointvec_minmax,
1861 static struct ctl_table debug_table[] = {
1862 #ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
1864 .procname = "exception-trace",
1865 .data = &show_unhandled_signals,
1866 .maxlen = sizeof(int),
1868 .proc_handler = proc_dointvec
1871 #if defined(CONFIG_OPTPROBES)
1873 .procname = "kprobes-optimization",
1874 .data = &sysctl_kprobes_optimization,
1875 .maxlen = sizeof(int),
1877 .proc_handler = proc_kprobes_optimization_handler,
1885 static struct ctl_table dev_table[] = {
1889 int __init sysctl_init(void)
1891 struct ctl_table_header *hdr;
1893 hdr = register_sysctl_table(sysctl_base_table);
1894 kmemleak_not_leak(hdr);
1898 #endif /* CONFIG_SYSCTL */
1904 #ifdef CONFIG_PROC_SYSCTL
1906 static int _proc_do_string(char *data, int maxlen, int write,
1907 char __user *buffer,
1908 size_t *lenp, loff_t *ppos)
1914 if (!data || !maxlen || !*lenp) {
1920 if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) {
1921 /* Only continue writes not past the end of buffer. */
1923 if (len > maxlen - 1)
1930 /* Start writing from beginning of buffer. */
1936 while ((p - buffer) < *lenp && len < maxlen - 1) {
1937 if (get_user(c, p++))
1939 if (c == 0 || c == '\n')
1960 if (copy_to_user(buffer, data, len))
1963 if (put_user('\n', buffer + len))
1973 static void warn_sysctl_write(struct ctl_table *table)
1975 pr_warn_once("%s wrote to %s when file position was not 0!\n"
1976 "This will not be supported in the future. To silence this\n"
1977 "warning, set kernel.sysctl_writes_strict = -1\n",
1978 current->comm, table->procname);
1982 * proc_dostring - read a string sysctl
1983 * @table: the sysctl table
1984 * @write: %TRUE if this is a write to the sysctl file
1985 * @buffer: the user buffer
1986 * @lenp: the size of the user buffer
1987 * @ppos: file position
1989 * Reads/writes a string from/to the user buffer. If the kernel
1990 * buffer provided is not large enough to hold the string, the
1991 * string is truncated. The copied string is %NULL-terminated.
1992 * If the string is being read by the user process, it is copied
1993 * and a newline '\n' is added. It is truncated if the buffer is
1996 * Returns 0 on success.
1998 int proc_dostring(struct ctl_table *table, int write,
1999 void __user *buffer, size_t *lenp, loff_t *ppos)
2001 if (write && *ppos && sysctl_writes_strict == SYSCTL_WRITES_WARN)
2002 warn_sysctl_write(table);
2004 return _proc_do_string((char *)(table->data), table->maxlen, write,
2005 (char __user *)buffer, lenp, ppos);
2008 static size_t proc_skip_spaces(char **buf)
2011 char *tmp = skip_spaces(*buf);
2017 static void proc_skip_char(char **buf, size_t *size, const char v)
2027 #define TMPBUFLEN 22
2029 * proc_get_long - reads an ASCII formatted integer from a user buffer
2031 * @buf: a kernel buffer
2032 * @size: size of the kernel buffer
2033 * @val: this is where the number will be stored
2034 * @neg: set to %TRUE if number is negative
2035 * @perm_tr: a vector which contains the allowed trailers
2036 * @perm_tr_len: size of the perm_tr vector
2037 * @tr: pointer to store the trailer character
2039 * In case of success %0 is returned and @buf and @size are updated with
2040 * the amount of bytes read. If @tr is non-NULL and a trailing
2041 * character exists (size is non-zero after returning from this
2042 * function), @tr is updated with the trailing character.
2044 static int proc_get_long(char **buf, size_t *size,
2045 unsigned long *val, bool *neg,
2046 const char *perm_tr, unsigned perm_tr_len, char *tr)
2049 char *p, tmp[TMPBUFLEN];
2055 if (len > TMPBUFLEN - 1)
2056 len = TMPBUFLEN - 1;
2058 memcpy(tmp, *buf, len);
2062 if (*p == '-' && *size > 1) {
2070 *val = simple_strtoul(p, &p, 0);
2074 /* We don't know if the next char is whitespace thus we may accept
2075 * invalid integers (e.g. 1234...a) or two integers instead of one
2076 * (e.g. 123...1). So lets not allow such large numbers. */
2077 if (len == TMPBUFLEN - 1)
2080 if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len))
2083 if (tr && (len < *size))
2093 * proc_put_long - converts an integer to a decimal ASCII formatted string
2095 * @buf: the user buffer
2096 * @size: the size of the user buffer
2097 * @val: the integer to be converted
2098 * @neg: sign of the number, %TRUE for negative
2100 * In case of success %0 is returned and @buf and @size are updated with
2101 * the amount of bytes written.
2103 static int proc_put_long(void __user **buf, size_t *size, unsigned long val,
2107 char tmp[TMPBUFLEN], *p = tmp;
2109 sprintf(p, "%s%lu", neg ? "-" : "", val);
2113 if (copy_to_user(*buf, tmp, len))
2121 static int proc_put_char(void __user **buf, size_t *size, char c)
2124 char __user **buffer = (char __user **)buf;
2125 if (put_user(c, *buffer))
2127 (*size)--, (*buffer)++;
2133 static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
2135 int write, void *data)
2139 if (*lvalp > (unsigned long) INT_MAX + 1)
2143 if (*lvalp > (unsigned long) INT_MAX)
2151 *lvalp = -(unsigned long)val;
2154 *lvalp = (unsigned long)val;
2160 static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp,
2162 int write, void *data)
2167 if (*lvalp > UINT_MAX)
2171 unsigned int val = *valp;
2173 *lvalp = (unsigned long)val;
2178 static const char proc_wspace_sep[] = { ' ', '\t', '\n' };
2180 static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
2181 int write, void __user *buffer,
2182 size_t *lenp, loff_t *ppos,
2183 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
2184 int write, void *data),
2187 int *i, vleft, first = 1, err = 0;
2188 unsigned long page = 0;
2192 if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
2197 i = (int *) tbl_data;
2198 vleft = table->maxlen / sizeof(*i);
2202 conv = do_proc_dointvec_conv;
2206 switch (sysctl_writes_strict) {
2207 case SYSCTL_WRITES_STRICT:
2209 case SYSCTL_WRITES_WARN:
2210 warn_sysctl_write(table);
2217 if (left > PAGE_SIZE - 1)
2218 left = PAGE_SIZE - 1;
2219 page = __get_free_page(GFP_TEMPORARY);
2220 kbuf = (char *) page;
2223 if (copy_from_user(kbuf, buffer, left)) {
2230 for (; left && vleft--; i++, first=0) {
2235 left -= proc_skip_spaces(&kbuf);
2239 err = proc_get_long(&kbuf, &left, &lval, &neg,
2241 sizeof(proc_wspace_sep), NULL);
2244 if (conv(&neg, &lval, i, 1, data)) {
2249 if (conv(&neg, &lval, i, 0, data)) {
2254 err = proc_put_char(&buffer, &left, '\t');
2257 err = proc_put_long(&buffer, &left, lval, neg);
2263 if (!write && !first && left && !err)
2264 err = proc_put_char(&buffer, &left, '\n');
2265 if (write && !err && left)
2266 left -= proc_skip_spaces(&kbuf);
2271 return err ? : -EINVAL;
2279 static int do_proc_dointvec(struct ctl_table *table, int write,
2280 void __user *buffer, size_t *lenp, loff_t *ppos,
2281 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
2282 int write, void *data),
2285 return __do_proc_dointvec(table->data, table, write,
2286 buffer, lenp, ppos, conv, data);
2290 * proc_dointvec - read a vector of integers
2291 * @table: the sysctl table
2292 * @write: %TRUE if this is a write to the sysctl file
2293 * @buffer: the user buffer
2294 * @lenp: the size of the user buffer
2295 * @ppos: file position
2297 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2298 * values from/to the user buffer, treated as an ASCII string.
2300 * Returns 0 on success.
2302 int proc_dointvec(struct ctl_table *table, int write,
2303 void __user *buffer, size_t *lenp, loff_t *ppos)
2305 return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL);
2309 * proc_douintvec - read a vector of unsigned integers
2310 * @table: the sysctl table
2311 * @write: %TRUE if this is a write to the sysctl file
2312 * @buffer: the user buffer
2313 * @lenp: the size of the user buffer
2314 * @ppos: file position
2316 * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer
2317 * values from/to the user buffer, treated as an ASCII string.
2319 * Returns 0 on success.
2321 int proc_douintvec(struct ctl_table *table, int write,
2322 void __user *buffer, size_t *lenp, loff_t *ppos)
2324 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2325 do_proc_douintvec_conv, NULL);
2329 * Taint values can only be increased
2330 * This means we can safely use a temporary.
2332 static int proc_taint(struct ctl_table *table, int write,
2333 void __user *buffer, size_t *lenp, loff_t *ppos)
2336 unsigned long tmptaint = get_taint();
2339 if (write && !capable(CAP_SYS_ADMIN))
2344 err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos);
2350 * Poor man's atomic or. Not worth adding a primitive
2351 * to everyone's atomic.h for this
2354 for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) {
2355 if ((tmptaint >> i) & 1)
2356 add_taint(i, LOCKDEP_STILL_OK);
2363 #ifdef CONFIG_PRINTK
2364 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
2365 void __user *buffer, size_t *lenp, loff_t *ppos)
2367 if (write && !capable(CAP_SYS_ADMIN))
2370 return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2374 struct do_proc_dointvec_minmax_conv_param {
2379 static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
2381 int write, void *data)
2383 struct do_proc_dointvec_minmax_conv_param *param = data;
2385 int val = *negp ? -*lvalp : *lvalp;
2386 if ((param->min && *param->min > val) ||
2387 (param->max && *param->max < val))
2394 *lvalp = -(unsigned long)val;
2397 *lvalp = (unsigned long)val;
2404 * proc_dointvec_minmax - read a vector of integers with min/max values
2405 * @table: the sysctl table
2406 * @write: %TRUE if this is a write to the sysctl file
2407 * @buffer: the user buffer
2408 * @lenp: the size of the user buffer
2409 * @ppos: file position
2411 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2412 * values from/to the user buffer, treated as an ASCII string.
2414 * This routine will ensure the values are within the range specified by
2415 * table->extra1 (min) and table->extra2 (max).
2417 * Returns 0 on success.
2419 int proc_dointvec_minmax(struct ctl_table *table, int write,
2420 void __user *buffer, size_t *lenp, loff_t *ppos)
2422 struct do_proc_dointvec_minmax_conv_param param = {
2423 .min = (int *) table->extra1,
2424 .max = (int *) table->extra2,
2426 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2427 do_proc_dointvec_minmax_conv, ¶m);
2430 static void validate_coredump_safety(void)
2432 #ifdef CONFIG_COREDUMP
2433 if (suid_dumpable == SUID_DUMP_ROOT &&
2434 core_pattern[0] != '/' && core_pattern[0] != '|') {
2435 printk(KERN_WARNING "Unsafe core_pattern used with "\
2436 "suid_dumpable=2. Pipe handler or fully qualified "\
2437 "core dump path required.\n");
2442 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
2443 void __user *buffer, size_t *lenp, loff_t *ppos)
2445 int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2447 validate_coredump_safety();
2451 #ifdef CONFIG_COREDUMP
2452 static int proc_dostring_coredump(struct ctl_table *table, int write,
2453 void __user *buffer, size_t *lenp, loff_t *ppos)
2455 int error = proc_dostring(table, write, buffer, lenp, ppos);
2457 validate_coredump_safety();
2462 static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
2463 void __user *buffer,
2464 size_t *lenp, loff_t *ppos,
2465 unsigned long convmul,
2466 unsigned long convdiv)
2468 unsigned long *i, *min, *max;
2469 int vleft, first = 1, err = 0;
2470 unsigned long page = 0;
2474 if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
2479 i = (unsigned long *) data;
2480 min = (unsigned long *) table->extra1;
2481 max = (unsigned long *) table->extra2;
2482 vleft = table->maxlen / sizeof(unsigned long);
2487 switch (sysctl_writes_strict) {
2488 case SYSCTL_WRITES_STRICT:
2490 case SYSCTL_WRITES_WARN:
2491 warn_sysctl_write(table);
2498 if (left > PAGE_SIZE - 1)
2499 left = PAGE_SIZE - 1;
2500 page = __get_free_page(GFP_TEMPORARY);
2501 kbuf = (char *) page;
2504 if (copy_from_user(kbuf, buffer, left)) {
2511 for (; left && vleft--; i++, first = 0) {
2517 left -= proc_skip_spaces(&kbuf);
2519 err = proc_get_long(&kbuf, &left, &val, &neg,
2521 sizeof(proc_wspace_sep), NULL);
2526 val = convmul * val / convdiv;
2527 if ((min && val < *min) || (max && val > *max))
2531 val = convdiv * (*i) / convmul;
2533 err = proc_put_char(&buffer, &left, '\t');
2537 err = proc_put_long(&buffer, &left, val, false);
2543 if (!write && !first && left && !err)
2544 err = proc_put_char(&buffer, &left, '\n');
2546 left -= proc_skip_spaces(&kbuf);
2551 return err ? : -EINVAL;
2559 static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
2560 void __user *buffer,
2561 size_t *lenp, loff_t *ppos,
2562 unsigned long convmul,
2563 unsigned long convdiv)
2565 return __do_proc_doulongvec_minmax(table->data, table, write,
2566 buffer, lenp, ppos, convmul, convdiv);
2570 * proc_doulongvec_minmax - read a vector of long integers with min/max values
2571 * @table: the sysctl table
2572 * @write: %TRUE if this is a write to the sysctl file
2573 * @buffer: the user buffer
2574 * @lenp: the size of the user buffer
2575 * @ppos: file position
2577 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2578 * values from/to the user buffer, treated as an ASCII string.
2580 * This routine will ensure the values are within the range specified by
2581 * table->extra1 (min) and table->extra2 (max).
2583 * Returns 0 on success.
2585 int proc_doulongvec_minmax(struct ctl_table *table, int write,
2586 void __user *buffer, size_t *lenp, loff_t *ppos)
2588 return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l);
2592 * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values
2593 * @table: the sysctl table
2594 * @write: %TRUE if this is a write to the sysctl file
2595 * @buffer: the user buffer
2596 * @lenp: the size of the user buffer
2597 * @ppos: file position
2599 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2600 * values from/to the user buffer, treated as an ASCII string. The values
2601 * are treated as milliseconds, and converted to jiffies when they are stored.
2603 * This routine will ensure the values are within the range specified by
2604 * table->extra1 (min) and table->extra2 (max).
2606 * Returns 0 on success.
2608 int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
2609 void __user *buffer,
2610 size_t *lenp, loff_t *ppos)
2612 return do_proc_doulongvec_minmax(table, write, buffer,
2613 lenp, ppos, HZ, 1000l);
2617 static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp,
2619 int write, void *data)
2622 if (*lvalp > LONG_MAX / HZ)
2624 *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ);
2630 lval = -(unsigned long)val;
2633 lval = (unsigned long)val;
2640 static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp,
2642 int write, void *data)
2645 if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ)
2647 *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp);
2653 lval = -(unsigned long)val;
2656 lval = (unsigned long)val;
2658 *lvalp = jiffies_to_clock_t(lval);
2663 static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp,
2665 int write, void *data)
2668 unsigned long jif = msecs_to_jiffies(*negp ? -*lvalp : *lvalp);
2678 lval = -(unsigned long)val;
2681 lval = (unsigned long)val;
2683 *lvalp = jiffies_to_msecs(lval);
2689 * proc_dointvec_jiffies - read a vector of integers as seconds
2690 * @table: the sysctl table
2691 * @write: %TRUE if this is a write to the sysctl file
2692 * @buffer: the user buffer
2693 * @lenp: the size of the user buffer
2694 * @ppos: file position
2696 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2697 * values from/to the user buffer, treated as an ASCII string.
2698 * The values read are assumed to be in seconds, and are converted into
2701 * Returns 0 on success.
2703 int proc_dointvec_jiffies(struct ctl_table *table, int write,
2704 void __user *buffer, size_t *lenp, loff_t *ppos)
2706 return do_proc_dointvec(table,write,buffer,lenp,ppos,
2707 do_proc_dointvec_jiffies_conv,NULL);
2711 * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds
2712 * @table: the sysctl table
2713 * @write: %TRUE if this is a write to the sysctl file
2714 * @buffer: the user buffer
2715 * @lenp: the size of the user buffer
2716 * @ppos: pointer to the file position
2718 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2719 * values from/to the user buffer, treated as an ASCII string.
2720 * The values read are assumed to be in 1/USER_HZ seconds, and
2721 * are converted into jiffies.
2723 * Returns 0 on success.
2725 int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
2726 void __user *buffer, size_t *lenp, loff_t *ppos)
2728 return do_proc_dointvec(table,write,buffer,lenp,ppos,
2729 do_proc_dointvec_userhz_jiffies_conv,NULL);
2733 * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds
2734 * @table: the sysctl table
2735 * @write: %TRUE if this is a write to the sysctl file
2736 * @buffer: the user buffer
2737 * @lenp: the size of the user buffer
2738 * @ppos: file position
2739 * @ppos: the current position in the file
2741 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2742 * values from/to the user buffer, treated as an ASCII string.
2743 * The values read are assumed to be in 1/1000 seconds, and
2744 * are converted into jiffies.
2746 * Returns 0 on success.
2748 int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
2749 void __user *buffer, size_t *lenp, loff_t *ppos)
2751 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2752 do_proc_dointvec_ms_jiffies_conv, NULL);
2755 static int proc_do_cad_pid(struct ctl_table *table, int write,
2756 void __user *buffer, size_t *lenp, loff_t *ppos)
2758 struct pid *new_pid;
2762 tmp = pid_vnr(cad_pid);
2764 r = __do_proc_dointvec(&tmp, table, write, buffer,
2765 lenp, ppos, NULL, NULL);
2769 new_pid = find_get_pid(tmp);
2773 put_pid(xchg(&cad_pid, new_pid));
2778 * proc_do_large_bitmap - read/write from/to a large bitmap
2779 * @table: the sysctl table
2780 * @write: %TRUE if this is a write to the sysctl file
2781 * @buffer: the user buffer
2782 * @lenp: the size of the user buffer
2783 * @ppos: file position
2785 * The bitmap is stored at table->data and the bitmap length (in bits)
2788 * We use a range comma separated format (e.g. 1,3-4,10-10) so that
2789 * large bitmaps may be represented in a compact manner. Writing into
2790 * the file will clear the bitmap then update it with the given input.
2792 * Returns 0 on success.
2794 int proc_do_large_bitmap(struct ctl_table *table, int write,
2795 void __user *buffer, size_t *lenp, loff_t *ppos)
2799 size_t left = *lenp;
2800 unsigned long bitmap_len = table->maxlen;
2801 unsigned long *bitmap = *(unsigned long **) table->data;
2802 unsigned long *tmp_bitmap = NULL;
2803 char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c;
2805 if (!bitmap || !bitmap_len || !left || (*ppos && !write)) {
2811 unsigned long page = 0;
2814 if (left > PAGE_SIZE - 1)
2815 left = PAGE_SIZE - 1;
2817 page = __get_free_page(GFP_TEMPORARY);
2818 kbuf = (char *) page;
2821 if (copy_from_user(kbuf, buffer, left)) {
2827 tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long),
2833 proc_skip_char(&kbuf, &left, '\n');
2834 while (!err && left) {
2835 unsigned long val_a, val_b;
2838 err = proc_get_long(&kbuf, &left, &val_a, &neg, tr_a,
2842 if (val_a >= bitmap_len || neg) {
2854 err = proc_get_long(&kbuf, &left, &val_b,
2855 &neg, tr_b, sizeof(tr_b),
2859 if (val_b >= bitmap_len || neg ||
2870 bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1);
2872 proc_skip_char(&kbuf, &left, '\n');
2876 unsigned long bit_a, bit_b = 0;
2879 bit_a = find_next_bit(bitmap, bitmap_len, bit_b);
2880 if (bit_a >= bitmap_len)
2882 bit_b = find_next_zero_bit(bitmap, bitmap_len,
2886 err = proc_put_char(&buffer, &left, ',');
2890 err = proc_put_long(&buffer, &left, bit_a, false);
2893 if (bit_a != bit_b) {
2894 err = proc_put_char(&buffer, &left, '-');
2897 err = proc_put_long(&buffer, &left, bit_b, false);
2905 err = proc_put_char(&buffer, &left, '\n');
2911 bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len);
2913 bitmap_copy(bitmap, tmp_bitmap, bitmap_len);
2925 #else /* CONFIG_PROC_SYSCTL */
2927 int proc_dostring(struct ctl_table *table, int write,
2928 void __user *buffer, size_t *lenp, loff_t *ppos)
2933 int proc_dointvec(struct ctl_table *table, int write,
2934 void __user *buffer, size_t *lenp, loff_t *ppos)
2939 int proc_douintvec(struct ctl_table *table, int write,
2940 void __user *buffer, size_t *lenp, loff_t *ppos)
2945 int proc_dointvec_minmax(struct ctl_table *table, int write,
2946 void __user *buffer, size_t *lenp, loff_t *ppos)
2951 int proc_dointvec_jiffies(struct ctl_table *table, int write,
2952 void __user *buffer, size_t *lenp, loff_t *ppos)
2957 int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
2958 void __user *buffer, size_t *lenp, loff_t *ppos)
2963 int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
2964 void __user *buffer, size_t *lenp, loff_t *ppos)
2969 int proc_doulongvec_minmax(struct ctl_table *table, int write,
2970 void __user *buffer, size_t *lenp, loff_t *ppos)
2975 int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
2976 void __user *buffer,
2977 size_t *lenp, loff_t *ppos)
2983 #endif /* CONFIG_PROC_SYSCTL */
2986 * No sense putting this after each symbol definition, twice,
2987 * exception granted :-)
2989 EXPORT_SYMBOL(proc_dointvec);
2990 EXPORT_SYMBOL(proc_douintvec);
2991 EXPORT_SYMBOL(proc_dointvec_jiffies);
2992 EXPORT_SYMBOL(proc_dointvec_minmax);
2993 EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
2994 EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
2995 EXPORT_SYMBOL(proc_dostring);
2996 EXPORT_SYMBOL(proc_doulongvec_minmax);
2997 EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);