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 pid_max_min, pid_max_max;
109 extern int percpu_pagelist_fraction;
110 extern int latencytop_enabled;
111 extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max;
113 extern int sysctl_nr_trim_pages;
116 /* Constants used for minimum and maximum */
117 #ifdef CONFIG_LOCKUP_DETECTOR
118 static int sixty = 60;
121 static int __maybe_unused neg_one = -1;
124 static int __maybe_unused one = 1;
125 static int __maybe_unused two = 2;
126 static int __maybe_unused four = 4;
127 static unsigned long zero_ul;
128 static unsigned long one_ul = 1;
129 static unsigned long long_max = LONG_MAX;
130 static int one_hundred = 100;
131 static int one_thousand = 1000;
133 static int ten_thousand = 10000;
135 #ifdef CONFIG_PERF_EVENTS
136 static int six_hundred_forty_kb = 640 * 1024;
139 /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
140 static unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
142 /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
143 static int maxolduid = 65535;
144 static int minolduid;
146 static int ngroups_max = NGROUPS_MAX;
147 static const int cap_last_cap = CAP_LAST_CAP;
149 /*this is needed for proc_doulongvec_minmax of sysctl_hung_task_timeout_secs */
150 #ifdef CONFIG_DETECT_HUNG_TASK
151 static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
154 #ifdef CONFIG_INOTIFY_USER
155 #include <linux/inotify.h>
161 extern int pwrsw_enabled;
164 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
165 extern int unaligned_enabled;
169 extern int unaligned_dump_stack;
172 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
173 extern int no_unaligned_warning;
176 #ifdef CONFIG_PROC_SYSCTL
178 #define SYSCTL_WRITES_LEGACY -1
179 #define SYSCTL_WRITES_WARN 0
180 #define SYSCTL_WRITES_STRICT 1
182 static int sysctl_writes_strict = SYSCTL_WRITES_STRICT;
184 static int proc_do_cad_pid(struct ctl_table *table, int write,
185 void __user *buffer, size_t *lenp, loff_t *ppos);
186 static int proc_taint(struct ctl_table *table, int write,
187 void __user *buffer, size_t *lenp, loff_t *ppos);
191 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
192 void __user *buffer, size_t *lenp, loff_t *ppos);
195 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
196 void __user *buffer, size_t *lenp, loff_t *ppos);
197 #ifdef CONFIG_COREDUMP
198 static int proc_dostring_coredump(struct ctl_table *table, int write,
199 void __user *buffer, size_t *lenp, loff_t *ppos);
202 #ifdef CONFIG_MAGIC_SYSRQ
203 /* Note: sysrq code uses it's own private copy */
204 static int __sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE;
206 static int sysrq_sysctl_handler(struct ctl_table *table, int write,
207 void __user *buffer, size_t *lenp,
212 error = proc_dointvec(table, write, buffer, lenp, ppos);
217 sysrq_toggle_support(__sysrq_enabled);
224 #ifdef CONFIG_BPF_SYSCALL
226 void __weak unpriv_ebpf_notify(int new_state)
230 static int bpf_unpriv_handler(struct ctl_table *table, int write,
231 void *buffer, size_t *lenp, loff_t *ppos)
233 int ret, unpriv_enable = *(int *)table->data;
234 bool locked_state = unpriv_enable == 1;
235 struct ctl_table tmp = *table;
237 if (write && !capable(CAP_SYS_ADMIN))
240 tmp.data = &unpriv_enable;
241 ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
243 if (locked_state && unpriv_enable != 1)
245 *(int *)table->data = unpriv_enable;
248 unpriv_ebpf_notify(unpriv_enable);
254 static struct ctl_table kern_table[];
255 static struct ctl_table vm_table[];
256 static struct ctl_table fs_table[];
257 static struct ctl_table debug_table[];
258 static struct ctl_table dev_table[];
259 extern struct ctl_table random_table[];
261 extern struct ctl_table epoll_table[];
264 #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
265 int sysctl_legacy_va_layout;
268 /* The default sysctl tables: */
270 static struct ctl_table sysctl_base_table[] = {
272 .procname = "kernel",
289 .child = debug_table,
299 #ifdef CONFIG_SCHED_DEBUG
300 static int min_sched_granularity_ns = 100000; /* 100 usecs */
301 static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */
302 static int min_wakeup_granularity_ns; /* 0 usecs */
303 static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */
305 static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE;
306 static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1;
307 #endif /* CONFIG_SMP */
308 #endif /* CONFIG_SCHED_DEBUG */
310 #ifdef CONFIG_COMPACTION
311 static int min_extfrag_threshold;
312 static int max_extfrag_threshold = 1000;
315 static struct ctl_table kern_table[] = {
317 .procname = "sched_child_runs_first",
318 .data = &sysctl_sched_child_runs_first,
319 .maxlen = sizeof(unsigned int),
321 .proc_handler = proc_dointvec,
323 #ifdef CONFIG_SCHED_DEBUG
325 .procname = "sched_min_granularity_ns",
326 .data = &sysctl_sched_min_granularity,
327 .maxlen = sizeof(unsigned int),
329 .proc_handler = sched_proc_update_handler,
330 .extra1 = &min_sched_granularity_ns,
331 .extra2 = &max_sched_granularity_ns,
334 .procname = "sched_latency_ns",
335 .data = &sysctl_sched_latency,
336 .maxlen = sizeof(unsigned int),
338 .proc_handler = sched_proc_update_handler,
339 .extra1 = &min_sched_granularity_ns,
340 .extra2 = &max_sched_granularity_ns,
343 .procname = "sched_wakeup_granularity_ns",
344 .data = &sysctl_sched_wakeup_granularity,
345 .maxlen = sizeof(unsigned int),
347 .proc_handler = sched_proc_update_handler,
348 .extra1 = &min_wakeup_granularity_ns,
349 .extra2 = &max_wakeup_granularity_ns,
353 .procname = "sched_tunable_scaling",
354 .data = &sysctl_sched_tunable_scaling,
355 .maxlen = sizeof(enum sched_tunable_scaling),
357 .proc_handler = sched_proc_update_handler,
358 .extra1 = &min_sched_tunable_scaling,
359 .extra2 = &max_sched_tunable_scaling,
362 .procname = "sched_migration_cost_ns",
363 .data = &sysctl_sched_migration_cost,
364 .maxlen = sizeof(unsigned int),
366 .proc_handler = proc_dointvec,
369 .procname = "sched_nr_migrate",
370 .data = &sysctl_sched_nr_migrate,
371 .maxlen = sizeof(unsigned int),
373 .proc_handler = proc_dointvec,
376 .procname = "sched_time_avg_ms",
377 .data = &sysctl_sched_time_avg,
378 .maxlen = sizeof(unsigned int),
380 .proc_handler = proc_dointvec_minmax,
384 .procname = "sched_shares_window_ns",
385 .data = &sysctl_sched_shares_window,
386 .maxlen = sizeof(unsigned int),
388 .proc_handler = proc_dointvec,
390 #ifdef CONFIG_SCHEDSTATS
392 .procname = "sched_schedstats",
394 .maxlen = sizeof(unsigned int),
396 .proc_handler = sysctl_schedstats,
400 #endif /* CONFIG_SCHEDSTATS */
401 #endif /* CONFIG_SMP */
402 #ifdef CONFIG_NUMA_BALANCING
404 .procname = "numa_balancing_scan_delay_ms",
405 .data = &sysctl_numa_balancing_scan_delay,
406 .maxlen = sizeof(unsigned int),
408 .proc_handler = proc_dointvec,
411 .procname = "numa_balancing_scan_period_min_ms",
412 .data = &sysctl_numa_balancing_scan_period_min,
413 .maxlen = sizeof(unsigned int),
415 .proc_handler = proc_dointvec,
418 .procname = "numa_balancing_scan_period_max_ms",
419 .data = &sysctl_numa_balancing_scan_period_max,
420 .maxlen = sizeof(unsigned int),
422 .proc_handler = proc_dointvec,
425 .procname = "numa_balancing_scan_size_mb",
426 .data = &sysctl_numa_balancing_scan_size,
427 .maxlen = sizeof(unsigned int),
429 .proc_handler = proc_dointvec_minmax,
433 .procname = "numa_balancing",
434 .data = NULL, /* filled in by handler */
435 .maxlen = sizeof(unsigned int),
437 .proc_handler = sysctl_numa_balancing,
441 #endif /* CONFIG_NUMA_BALANCING */
442 #endif /* CONFIG_SCHED_DEBUG */
444 .procname = "sched_rt_period_us",
445 .data = &sysctl_sched_rt_period,
446 .maxlen = sizeof(unsigned int),
448 .proc_handler = sched_rt_handler,
451 .procname = "sched_rt_runtime_us",
452 .data = &sysctl_sched_rt_runtime,
453 .maxlen = sizeof(int),
455 .proc_handler = sched_rt_handler,
458 .procname = "sched_rr_timeslice_ms",
459 .data = &sysctl_sched_rr_timeslice,
460 .maxlen = sizeof(int),
462 .proc_handler = sched_rr_handler,
464 #ifdef CONFIG_SCHED_AUTOGROUP
466 .procname = "sched_autogroup_enabled",
467 .data = &sysctl_sched_autogroup_enabled,
468 .maxlen = sizeof(unsigned int),
470 .proc_handler = proc_dointvec_minmax,
475 #ifdef CONFIG_CFS_BANDWIDTH
477 .procname = "sched_cfs_bandwidth_slice_us",
478 .data = &sysctl_sched_cfs_bandwidth_slice,
479 .maxlen = sizeof(unsigned int),
481 .proc_handler = proc_dointvec_minmax,
485 #ifdef CONFIG_PROVE_LOCKING
487 .procname = "prove_locking",
488 .data = &prove_locking,
489 .maxlen = sizeof(int),
491 .proc_handler = proc_dointvec,
494 #ifdef CONFIG_LOCK_STAT
496 .procname = "lock_stat",
498 .maxlen = sizeof(int),
500 .proc_handler = proc_dointvec,
505 .data = &panic_timeout,
506 .maxlen = sizeof(int),
508 .proc_handler = proc_dointvec,
510 #ifdef CONFIG_COREDUMP
512 .procname = "core_uses_pid",
513 .data = &core_uses_pid,
514 .maxlen = sizeof(int),
516 .proc_handler = proc_dointvec,
519 .procname = "core_pattern",
520 .data = core_pattern,
521 .maxlen = CORENAME_MAX_SIZE,
523 .proc_handler = proc_dostring_coredump,
526 .procname = "core_pipe_limit",
527 .data = &core_pipe_limit,
528 .maxlen = sizeof(unsigned int),
530 .proc_handler = proc_dointvec,
533 #ifdef CONFIG_PROC_SYSCTL
535 .procname = "tainted",
536 .maxlen = sizeof(long),
538 .proc_handler = proc_taint,
541 .procname = "sysctl_writes_strict",
542 .data = &sysctl_writes_strict,
543 .maxlen = sizeof(int),
545 .proc_handler = proc_dointvec_minmax,
550 #ifdef CONFIG_LATENCYTOP
552 .procname = "latencytop",
553 .data = &latencytop_enabled,
554 .maxlen = sizeof(int),
556 .proc_handler = sysctl_latencytop,
559 #ifdef CONFIG_BLK_DEV_INITRD
561 .procname = "real-root-dev",
562 .data = &real_root_dev,
563 .maxlen = sizeof(int),
565 .proc_handler = proc_dointvec,
569 .procname = "print-fatal-signals",
570 .data = &print_fatal_signals,
571 .maxlen = sizeof(int),
573 .proc_handler = proc_dointvec,
577 .procname = "reboot-cmd",
578 .data = reboot_command,
581 .proc_handler = proc_dostring,
584 .procname = "stop-a",
585 .data = &stop_a_enabled,
586 .maxlen = sizeof (int),
588 .proc_handler = proc_dointvec,
591 .procname = "scons-poweroff",
592 .data = &scons_pwroff,
593 .maxlen = sizeof (int),
595 .proc_handler = proc_dointvec,
598 #ifdef CONFIG_SPARC64
600 .procname = "tsb-ratio",
601 .data = &sysctl_tsb_ratio,
602 .maxlen = sizeof (int),
604 .proc_handler = proc_dointvec,
609 .procname = "soft-power",
610 .data = &pwrsw_enabled,
611 .maxlen = sizeof (int),
613 .proc_handler = proc_dointvec,
616 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW
618 .procname = "unaligned-trap",
619 .data = &unaligned_enabled,
620 .maxlen = sizeof (int),
622 .proc_handler = proc_dointvec,
626 .procname = "ctrl-alt-del",
628 .maxlen = sizeof(int),
630 .proc_handler = proc_dointvec,
632 #ifdef CONFIG_FUNCTION_TRACER
634 .procname = "ftrace_enabled",
635 .data = &ftrace_enabled,
636 .maxlen = sizeof(int),
638 .proc_handler = ftrace_enable_sysctl,
641 #ifdef CONFIG_STACK_TRACER
643 .procname = "stack_tracer_enabled",
644 .data = &stack_tracer_enabled,
645 .maxlen = sizeof(int),
647 .proc_handler = stack_trace_sysctl,
650 #ifdef CONFIG_TRACING
652 .procname = "ftrace_dump_on_oops",
653 .data = &ftrace_dump_on_oops,
654 .maxlen = sizeof(int),
656 .proc_handler = proc_dointvec,
659 .procname = "traceoff_on_warning",
660 .data = &__disable_trace_on_warning,
661 .maxlen = sizeof(__disable_trace_on_warning),
663 .proc_handler = proc_dointvec,
666 .procname = "tracepoint_printk",
667 .data = &tracepoint_printk,
668 .maxlen = sizeof(tracepoint_printk),
670 .proc_handler = proc_dointvec,
673 #ifdef CONFIG_KEXEC_CORE
675 .procname = "kexec_load_disabled",
676 .data = &kexec_load_disabled,
677 .maxlen = sizeof(int),
679 /* only handle a transition from default "0" to "1" */
680 .proc_handler = proc_dointvec_minmax,
685 #ifdef CONFIG_MODULES
687 .procname = "modprobe",
688 .data = &modprobe_path,
689 .maxlen = KMOD_PATH_LEN,
691 .proc_handler = proc_dostring,
694 .procname = "modules_disabled",
695 .data = &modules_disabled,
696 .maxlen = sizeof(int),
698 /* only handle a transition from default "0" to "1" */
699 .proc_handler = proc_dointvec_minmax,
704 #ifdef CONFIG_UEVENT_HELPER
706 .procname = "hotplug",
707 .data = &uevent_helper,
708 .maxlen = UEVENT_HELPER_PATH_LEN,
710 .proc_handler = proc_dostring,
713 #ifdef CONFIG_CHR_DEV_SG
715 .procname = "sg-big-buff",
716 .data = &sg_big_buff,
717 .maxlen = sizeof (int),
719 .proc_handler = proc_dointvec,
722 #ifdef CONFIG_BSD_PROCESS_ACCT
726 .maxlen = 3*sizeof(int),
728 .proc_handler = proc_dointvec,
731 #ifdef CONFIG_MAGIC_SYSRQ
734 .data = &__sysrq_enabled,
735 .maxlen = sizeof (int),
737 .proc_handler = sysrq_sysctl_handler,
740 #ifdef CONFIG_PROC_SYSCTL
742 .procname = "cad_pid",
744 .maxlen = sizeof (int),
746 .proc_handler = proc_do_cad_pid,
750 .procname = "threads-max",
752 .maxlen = sizeof(int),
754 .proc_handler = sysctl_max_threads,
757 .procname = "random",
759 .child = random_table,
762 .procname = "usermodehelper",
764 .child = usermodehelper_table,
767 .procname = "overflowuid",
768 .data = &overflowuid,
769 .maxlen = sizeof(int),
771 .proc_handler = proc_dointvec_minmax,
772 .extra1 = &minolduid,
773 .extra2 = &maxolduid,
776 .procname = "overflowgid",
777 .data = &overflowgid,
778 .maxlen = sizeof(int),
780 .proc_handler = proc_dointvec_minmax,
781 .extra1 = &minolduid,
782 .extra2 = &maxolduid,
785 #ifdef CONFIG_MATHEMU
787 .procname = "ieee_emulation_warnings",
788 .data = &sysctl_ieee_emulation_warnings,
789 .maxlen = sizeof(int),
791 .proc_handler = proc_dointvec,
795 .procname = "userprocess_debug",
796 .data = &show_unhandled_signals,
797 .maxlen = sizeof(int),
799 .proc_handler = proc_dointvec,
803 .procname = "pid_max",
805 .maxlen = sizeof (int),
807 .proc_handler = proc_dointvec_minmax,
808 .extra1 = &pid_max_min,
809 .extra2 = &pid_max_max,
812 .procname = "panic_on_oops",
813 .data = &panic_on_oops,
814 .maxlen = sizeof(int),
816 .proc_handler = proc_dointvec,
818 #if defined CONFIG_PRINTK
820 .procname = "printk",
821 .data = &console_loglevel,
822 .maxlen = 4*sizeof(int),
824 .proc_handler = proc_dointvec,
827 .procname = "printk_ratelimit",
828 .data = &printk_ratelimit_state.interval,
829 .maxlen = sizeof(int),
831 .proc_handler = proc_dointvec_jiffies,
834 .procname = "printk_ratelimit_burst",
835 .data = &printk_ratelimit_state.burst,
836 .maxlen = sizeof(int),
838 .proc_handler = proc_dointvec,
841 .procname = "printk_delay",
842 .data = &printk_delay_msec,
843 .maxlen = sizeof(int),
845 .proc_handler = proc_dointvec_minmax,
847 .extra2 = &ten_thousand,
850 .procname = "printk_devkmsg",
851 .data = devkmsg_log_str,
852 .maxlen = DEVKMSG_STR_MAX_SIZE,
854 .proc_handler = devkmsg_sysctl_set_loglvl,
857 .procname = "dmesg_restrict",
858 .data = &dmesg_restrict,
859 .maxlen = sizeof(int),
861 .proc_handler = proc_dointvec_minmax_sysadmin,
866 .procname = "kptr_restrict",
867 .data = &kptr_restrict,
868 .maxlen = sizeof(int),
870 .proc_handler = proc_dointvec_minmax_sysadmin,
876 .procname = "ngroups_max",
877 .data = &ngroups_max,
878 .maxlen = sizeof (int),
880 .proc_handler = proc_dointvec,
883 .procname = "cap_last_cap",
884 .data = (void *)&cap_last_cap,
885 .maxlen = sizeof(int),
887 .proc_handler = proc_dointvec,
889 #if defined(CONFIG_LOCKUP_DETECTOR)
891 .procname = "watchdog",
892 .data = &watchdog_user_enabled,
893 .maxlen = sizeof (int),
895 .proc_handler = proc_watchdog,
900 .procname = "watchdog_thresh",
901 .data = &watchdog_thresh,
902 .maxlen = sizeof(int),
904 .proc_handler = proc_watchdog_thresh,
909 .procname = "nmi_watchdog",
910 .data = &nmi_watchdog_enabled,
911 .maxlen = sizeof (int),
913 .proc_handler = proc_nmi_watchdog,
915 #if defined(CONFIG_HAVE_NMI_WATCHDOG) || defined(CONFIG_HARDLOCKUP_DETECTOR)
922 .procname = "soft_watchdog",
923 .data = &soft_watchdog_enabled,
924 .maxlen = sizeof (int),
926 .proc_handler = proc_soft_watchdog,
931 .procname = "watchdog_cpumask",
932 .data = &watchdog_cpumask_bits,
935 .proc_handler = proc_watchdog_cpumask,
938 .procname = "softlockup_panic",
939 .data = &softlockup_panic,
940 .maxlen = sizeof(int),
942 .proc_handler = proc_dointvec_minmax,
946 #ifdef CONFIG_HARDLOCKUP_DETECTOR
948 .procname = "hardlockup_panic",
949 .data = &hardlockup_panic,
950 .maxlen = sizeof(int),
952 .proc_handler = proc_dointvec_minmax,
959 .procname = "softlockup_all_cpu_backtrace",
960 .data = &sysctl_softlockup_all_cpu_backtrace,
961 .maxlen = sizeof(int),
963 .proc_handler = proc_dointvec_minmax,
968 .procname = "hardlockup_all_cpu_backtrace",
969 .data = &sysctl_hardlockup_all_cpu_backtrace,
970 .maxlen = sizeof(int),
972 .proc_handler = proc_dointvec_minmax,
976 #endif /* CONFIG_SMP */
978 #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86)
980 .procname = "unknown_nmi_panic",
981 .data = &unknown_nmi_panic,
982 .maxlen = sizeof (int),
984 .proc_handler = proc_dointvec,
987 #if defined(CONFIG_X86)
989 .procname = "panic_on_unrecovered_nmi",
990 .data = &panic_on_unrecovered_nmi,
991 .maxlen = sizeof(int),
993 .proc_handler = proc_dointvec,
996 .procname = "panic_on_io_nmi",
997 .data = &panic_on_io_nmi,
998 .maxlen = sizeof(int),
1000 .proc_handler = proc_dointvec,
1002 #ifdef CONFIG_DEBUG_STACKOVERFLOW
1004 .procname = "panic_on_stackoverflow",
1005 .data = &sysctl_panic_on_stackoverflow,
1006 .maxlen = sizeof(int),
1008 .proc_handler = proc_dointvec,
1012 .procname = "bootloader_type",
1013 .data = &bootloader_type,
1014 .maxlen = sizeof (int),
1016 .proc_handler = proc_dointvec,
1019 .procname = "bootloader_version",
1020 .data = &bootloader_version,
1021 .maxlen = sizeof (int),
1023 .proc_handler = proc_dointvec,
1026 .procname = "kstack_depth_to_print",
1027 .data = &kstack_depth_to_print,
1028 .maxlen = sizeof(int),
1030 .proc_handler = proc_dointvec,
1033 .procname = "io_delay_type",
1034 .data = &io_delay_type,
1035 .maxlen = sizeof(int),
1037 .proc_handler = proc_dointvec,
1040 #if defined(CONFIG_MMU)
1042 .procname = "randomize_va_space",
1043 .data = &randomize_va_space,
1044 .maxlen = sizeof(int),
1046 .proc_handler = proc_dointvec,
1049 #if defined(CONFIG_S390) && defined(CONFIG_SMP)
1051 .procname = "spin_retry",
1052 .data = &spin_retry,
1053 .maxlen = sizeof (int),
1055 .proc_handler = proc_dointvec,
1058 #if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86)
1060 .procname = "acpi_video_flags",
1061 .data = &acpi_realmode_flags,
1062 .maxlen = sizeof (unsigned long),
1064 .proc_handler = proc_doulongvec_minmax,
1067 #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
1069 .procname = "ignore-unaligned-usertrap",
1070 .data = &no_unaligned_warning,
1071 .maxlen = sizeof (int),
1073 .proc_handler = proc_dointvec,
1078 .procname = "unaligned-dump-stack",
1079 .data = &unaligned_dump_stack,
1080 .maxlen = sizeof (int),
1082 .proc_handler = proc_dointvec,
1085 #ifdef CONFIG_DETECT_HUNG_TASK
1087 .procname = "hung_task_panic",
1088 .data = &sysctl_hung_task_panic,
1089 .maxlen = sizeof(int),
1091 .proc_handler = proc_dointvec_minmax,
1096 .procname = "hung_task_check_count",
1097 .data = &sysctl_hung_task_check_count,
1098 .maxlen = sizeof(int),
1100 .proc_handler = proc_dointvec_minmax,
1104 .procname = "hung_task_timeout_secs",
1105 .data = &sysctl_hung_task_timeout_secs,
1106 .maxlen = sizeof(unsigned long),
1108 .proc_handler = proc_dohung_task_timeout_secs,
1109 .extra2 = &hung_task_timeout_max,
1112 .procname = "hung_task_warnings",
1113 .data = &sysctl_hung_task_warnings,
1114 .maxlen = sizeof(int),
1116 .proc_handler = proc_dointvec_minmax,
1120 #ifdef CONFIG_RT_MUTEXES
1122 .procname = "max_lock_depth",
1123 .data = &max_lock_depth,
1124 .maxlen = sizeof(int),
1126 .proc_handler = proc_dointvec,
1130 .procname = "poweroff_cmd",
1131 .data = &poweroff_cmd,
1132 .maxlen = POWEROFF_CMD_PATH_LEN,
1134 .proc_handler = proc_dostring,
1140 .child = key_sysctls,
1143 #ifdef CONFIG_PERF_EVENTS
1145 * User-space scripts rely on the existence of this file
1146 * as a feature check for perf_events being enabled.
1148 * So it's an ABI, do not remove!
1151 .procname = "perf_event_paranoid",
1152 .data = &sysctl_perf_event_paranoid,
1153 .maxlen = sizeof(sysctl_perf_event_paranoid),
1155 .proc_handler = proc_dointvec,
1158 .procname = "perf_event_mlock_kb",
1159 .data = &sysctl_perf_event_mlock,
1160 .maxlen = sizeof(sysctl_perf_event_mlock),
1162 .proc_handler = proc_dointvec,
1165 .procname = "perf_event_max_sample_rate",
1166 .data = &sysctl_perf_event_sample_rate,
1167 .maxlen = sizeof(sysctl_perf_event_sample_rate),
1169 .proc_handler = perf_proc_update_handler,
1173 .procname = "perf_cpu_time_max_percent",
1174 .data = &sysctl_perf_cpu_time_max_percent,
1175 .maxlen = sizeof(sysctl_perf_cpu_time_max_percent),
1177 .proc_handler = perf_cpu_time_max_percent_handler,
1179 .extra2 = &one_hundred,
1182 .procname = "perf_event_max_stack",
1183 .data = &sysctl_perf_event_max_stack,
1184 .maxlen = sizeof(sysctl_perf_event_max_stack),
1186 .proc_handler = perf_event_max_stack_handler,
1188 .extra2 = &six_hundred_forty_kb,
1191 .procname = "perf_event_max_contexts_per_stack",
1192 .data = &sysctl_perf_event_max_contexts_per_stack,
1193 .maxlen = sizeof(sysctl_perf_event_max_contexts_per_stack),
1195 .proc_handler = perf_event_max_stack_handler,
1197 .extra2 = &one_thousand,
1200 #ifdef CONFIG_KMEMCHECK
1202 .procname = "kmemcheck",
1203 .data = &kmemcheck_enabled,
1204 .maxlen = sizeof(int),
1206 .proc_handler = proc_dointvec,
1210 .procname = "panic_on_warn",
1211 .data = &panic_on_warn,
1212 .maxlen = sizeof(int),
1214 .proc_handler = proc_dointvec_minmax,
1218 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
1220 .procname = "timer_migration",
1221 .data = &sysctl_timer_migration,
1222 .maxlen = sizeof(unsigned int),
1224 .proc_handler = timer_migration_handler,
1229 #ifdef CONFIG_BPF_SYSCALL
1231 .procname = "unprivileged_bpf_disabled",
1232 .data = &sysctl_unprivileged_bpf_disabled,
1233 .maxlen = sizeof(sysctl_unprivileged_bpf_disabled),
1235 .proc_handler = bpf_unpriv_handler,
1240 #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU)
1242 .procname = "panic_on_rcu_stall",
1243 .data = &sysctl_panic_on_rcu_stall,
1244 .maxlen = sizeof(sysctl_panic_on_rcu_stall),
1246 .proc_handler = proc_dointvec_minmax,
1254 static struct ctl_table vm_table[] = {
1256 .procname = "overcommit_memory",
1257 .data = &sysctl_overcommit_memory,
1258 .maxlen = sizeof(sysctl_overcommit_memory),
1260 .proc_handler = proc_dointvec_minmax,
1265 .procname = "panic_on_oom",
1266 .data = &sysctl_panic_on_oom,
1267 .maxlen = sizeof(sysctl_panic_on_oom),
1269 .proc_handler = proc_dointvec_minmax,
1274 .procname = "oom_kill_allocating_task",
1275 .data = &sysctl_oom_kill_allocating_task,
1276 .maxlen = sizeof(sysctl_oom_kill_allocating_task),
1278 .proc_handler = proc_dointvec,
1281 .procname = "oom_dump_tasks",
1282 .data = &sysctl_oom_dump_tasks,
1283 .maxlen = sizeof(sysctl_oom_dump_tasks),
1285 .proc_handler = proc_dointvec,
1288 .procname = "overcommit_ratio",
1289 .data = &sysctl_overcommit_ratio,
1290 .maxlen = sizeof(sysctl_overcommit_ratio),
1292 .proc_handler = overcommit_ratio_handler,
1295 .procname = "overcommit_kbytes",
1296 .data = &sysctl_overcommit_kbytes,
1297 .maxlen = sizeof(sysctl_overcommit_kbytes),
1299 .proc_handler = overcommit_kbytes_handler,
1302 .procname = "page-cluster",
1303 .data = &page_cluster,
1304 .maxlen = sizeof(int),
1306 .proc_handler = proc_dointvec_minmax,
1310 .procname = "dirty_background_ratio",
1311 .data = &dirty_background_ratio,
1312 .maxlen = sizeof(dirty_background_ratio),
1314 .proc_handler = dirty_background_ratio_handler,
1316 .extra2 = &one_hundred,
1319 .procname = "dirty_background_bytes",
1320 .data = &dirty_background_bytes,
1321 .maxlen = sizeof(dirty_background_bytes),
1323 .proc_handler = dirty_background_bytes_handler,
1327 .procname = "dirty_ratio",
1328 .data = &vm_dirty_ratio,
1329 .maxlen = sizeof(vm_dirty_ratio),
1331 .proc_handler = dirty_ratio_handler,
1333 .extra2 = &one_hundred,
1336 .procname = "dirty_bytes",
1337 .data = &vm_dirty_bytes,
1338 .maxlen = sizeof(vm_dirty_bytes),
1340 .proc_handler = dirty_bytes_handler,
1341 .extra1 = &dirty_bytes_min,
1344 .procname = "dirty_writeback_centisecs",
1345 .data = &dirty_writeback_interval,
1346 .maxlen = sizeof(dirty_writeback_interval),
1348 .proc_handler = dirty_writeback_centisecs_handler,
1351 .procname = "dirty_expire_centisecs",
1352 .data = &dirty_expire_interval,
1353 .maxlen = sizeof(dirty_expire_interval),
1355 .proc_handler = proc_dointvec_minmax,
1359 .procname = "dirtytime_expire_seconds",
1360 .data = &dirtytime_expire_interval,
1361 .maxlen = sizeof(dirty_expire_interval),
1363 .proc_handler = dirtytime_interval_handler,
1367 .procname = "nr_pdflush_threads",
1368 .mode = 0444 /* read-only */,
1369 .proc_handler = pdflush_proc_obsolete,
1372 .procname = "swappiness",
1373 .data = &vm_swappiness,
1374 .maxlen = sizeof(vm_swappiness),
1376 .proc_handler = proc_dointvec_minmax,
1378 .extra2 = &one_hundred,
1380 #ifdef CONFIG_HUGETLB_PAGE
1382 .procname = "nr_hugepages",
1384 .maxlen = sizeof(unsigned long),
1386 .proc_handler = hugetlb_sysctl_handler,
1390 .procname = "nr_hugepages_mempolicy",
1392 .maxlen = sizeof(unsigned long),
1394 .proc_handler = &hugetlb_mempolicy_sysctl_handler,
1398 .procname = "hugetlb_shm_group",
1399 .data = &sysctl_hugetlb_shm_group,
1400 .maxlen = sizeof(gid_t),
1402 .proc_handler = proc_dointvec,
1405 .procname = "hugepages_treat_as_movable",
1406 .data = &hugepages_treat_as_movable,
1407 .maxlen = sizeof(int),
1409 .proc_handler = proc_dointvec,
1412 .procname = "nr_overcommit_hugepages",
1414 .maxlen = sizeof(unsigned long),
1416 .proc_handler = hugetlb_overcommit_handler,
1420 .procname = "lowmem_reserve_ratio",
1421 .data = &sysctl_lowmem_reserve_ratio,
1422 .maxlen = sizeof(sysctl_lowmem_reserve_ratio),
1424 .proc_handler = lowmem_reserve_ratio_sysctl_handler,
1427 .procname = "drop_caches",
1428 .data = &sysctl_drop_caches,
1429 .maxlen = sizeof(int),
1431 .proc_handler = drop_caches_sysctl_handler,
1435 #ifdef CONFIG_COMPACTION
1437 .procname = "compact_memory",
1438 .data = &sysctl_compact_memory,
1439 .maxlen = sizeof(int),
1441 .proc_handler = sysctl_compaction_handler,
1444 .procname = "extfrag_threshold",
1445 .data = &sysctl_extfrag_threshold,
1446 .maxlen = sizeof(int),
1448 .proc_handler = sysctl_extfrag_handler,
1449 .extra1 = &min_extfrag_threshold,
1450 .extra2 = &max_extfrag_threshold,
1453 .procname = "compact_unevictable_allowed",
1454 .data = &sysctl_compact_unevictable_allowed,
1455 .maxlen = sizeof(int),
1457 .proc_handler = proc_dointvec,
1462 #endif /* CONFIG_COMPACTION */
1464 .procname = "min_free_kbytes",
1465 .data = &min_free_kbytes,
1466 .maxlen = sizeof(min_free_kbytes),
1468 .proc_handler = min_free_kbytes_sysctl_handler,
1472 .procname = "watermark_scale_factor",
1473 .data = &watermark_scale_factor,
1474 .maxlen = sizeof(watermark_scale_factor),
1476 .proc_handler = watermark_scale_factor_sysctl_handler,
1478 .extra2 = &one_thousand,
1481 .procname = "percpu_pagelist_fraction",
1482 .data = &percpu_pagelist_fraction,
1483 .maxlen = sizeof(percpu_pagelist_fraction),
1485 .proc_handler = percpu_pagelist_fraction_sysctl_handler,
1490 .procname = "max_map_count",
1491 .data = &sysctl_max_map_count,
1492 .maxlen = sizeof(sysctl_max_map_count),
1494 .proc_handler = proc_dointvec_minmax,
1499 .procname = "nr_trim_pages",
1500 .data = &sysctl_nr_trim_pages,
1501 .maxlen = sizeof(sysctl_nr_trim_pages),
1503 .proc_handler = proc_dointvec_minmax,
1508 .procname = "laptop_mode",
1509 .data = &laptop_mode,
1510 .maxlen = sizeof(laptop_mode),
1512 .proc_handler = proc_dointvec_jiffies,
1515 .procname = "block_dump",
1516 .data = &block_dump,
1517 .maxlen = sizeof(block_dump),
1519 .proc_handler = proc_dointvec,
1523 .procname = "vfs_cache_pressure",
1524 .data = &sysctl_vfs_cache_pressure,
1525 .maxlen = sizeof(sysctl_vfs_cache_pressure),
1527 .proc_handler = proc_dointvec,
1530 #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT
1532 .procname = "legacy_va_layout",
1533 .data = &sysctl_legacy_va_layout,
1534 .maxlen = sizeof(sysctl_legacy_va_layout),
1536 .proc_handler = proc_dointvec,
1542 .procname = "zone_reclaim_mode",
1543 .data = &node_reclaim_mode,
1544 .maxlen = sizeof(node_reclaim_mode),
1546 .proc_handler = proc_dointvec,
1550 .procname = "min_unmapped_ratio",
1551 .data = &sysctl_min_unmapped_ratio,
1552 .maxlen = sizeof(sysctl_min_unmapped_ratio),
1554 .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler,
1556 .extra2 = &one_hundred,
1559 .procname = "min_slab_ratio",
1560 .data = &sysctl_min_slab_ratio,
1561 .maxlen = sizeof(sysctl_min_slab_ratio),
1563 .proc_handler = sysctl_min_slab_ratio_sysctl_handler,
1565 .extra2 = &one_hundred,
1570 .procname = "stat_interval",
1571 .data = &sysctl_stat_interval,
1572 .maxlen = sizeof(sysctl_stat_interval),
1574 .proc_handler = proc_dointvec_jiffies,
1577 .procname = "stat_refresh",
1581 .proc_handler = vmstat_refresh,
1586 .procname = "mmap_min_addr",
1587 .data = &dac_mmap_min_addr,
1588 .maxlen = sizeof(unsigned long),
1590 .proc_handler = mmap_min_addr_handler,
1595 .procname = "numa_zonelist_order",
1596 .data = &numa_zonelist_order,
1597 .maxlen = NUMA_ZONELIST_ORDER_LEN,
1599 .proc_handler = numa_zonelist_order_handler,
1602 #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \
1603 (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL))
1605 .procname = "vdso_enabled",
1606 #ifdef CONFIG_X86_32
1607 .data = &vdso32_enabled,
1608 .maxlen = sizeof(vdso32_enabled),
1610 .data = &vdso_enabled,
1611 .maxlen = sizeof(vdso_enabled),
1614 .proc_handler = proc_dointvec,
1618 #ifdef CONFIG_HIGHMEM
1620 .procname = "highmem_is_dirtyable",
1621 .data = &vm_highmem_is_dirtyable,
1622 .maxlen = sizeof(vm_highmem_is_dirtyable),
1624 .proc_handler = proc_dointvec_minmax,
1629 #ifdef CONFIG_MEMORY_FAILURE
1631 .procname = "memory_failure_early_kill",
1632 .data = &sysctl_memory_failure_early_kill,
1633 .maxlen = sizeof(sysctl_memory_failure_early_kill),
1635 .proc_handler = proc_dointvec_minmax,
1640 .procname = "memory_failure_recovery",
1641 .data = &sysctl_memory_failure_recovery,
1642 .maxlen = sizeof(sysctl_memory_failure_recovery),
1644 .proc_handler = proc_dointvec_minmax,
1650 .procname = "user_reserve_kbytes",
1651 .data = &sysctl_user_reserve_kbytes,
1652 .maxlen = sizeof(sysctl_user_reserve_kbytes),
1654 .proc_handler = proc_doulongvec_minmax,
1657 .procname = "admin_reserve_kbytes",
1658 .data = &sysctl_admin_reserve_kbytes,
1659 .maxlen = sizeof(sysctl_admin_reserve_kbytes),
1661 .proc_handler = proc_doulongvec_minmax,
1663 #ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS
1665 .procname = "mmap_rnd_bits",
1666 .data = &mmap_rnd_bits,
1667 .maxlen = sizeof(mmap_rnd_bits),
1669 .proc_handler = proc_dointvec_minmax,
1670 .extra1 = (void *)&mmap_rnd_bits_min,
1671 .extra2 = (void *)&mmap_rnd_bits_max,
1674 #ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS
1676 .procname = "mmap_rnd_compat_bits",
1677 .data = &mmap_rnd_compat_bits,
1678 .maxlen = sizeof(mmap_rnd_compat_bits),
1680 .proc_handler = proc_dointvec_minmax,
1681 .extra1 = (void *)&mmap_rnd_compat_bits_min,
1682 .extra2 = (void *)&mmap_rnd_compat_bits_max,
1688 static struct ctl_table fs_table[] = {
1690 .procname = "inode-nr",
1691 .data = &inodes_stat,
1692 .maxlen = 2*sizeof(long),
1694 .proc_handler = proc_nr_inodes,
1697 .procname = "inode-state",
1698 .data = &inodes_stat,
1699 .maxlen = 7*sizeof(long),
1701 .proc_handler = proc_nr_inodes,
1704 .procname = "file-nr",
1705 .data = &files_stat,
1706 .maxlen = sizeof(files_stat),
1708 .proc_handler = proc_nr_files,
1711 .procname = "file-max",
1712 .data = &files_stat.max_files,
1713 .maxlen = sizeof(files_stat.max_files),
1715 .proc_handler = proc_doulongvec_minmax,
1717 .extra2 = &long_max,
1720 .procname = "nr_open",
1721 .data = &sysctl_nr_open,
1722 .maxlen = sizeof(unsigned int),
1724 .proc_handler = proc_dointvec_minmax,
1725 .extra1 = &sysctl_nr_open_min,
1726 .extra2 = &sysctl_nr_open_max,
1729 .procname = "dentry-state",
1730 .data = &dentry_stat,
1731 .maxlen = 6*sizeof(long),
1733 .proc_handler = proc_nr_dentry,
1736 .procname = "overflowuid",
1737 .data = &fs_overflowuid,
1738 .maxlen = sizeof(int),
1740 .proc_handler = proc_dointvec_minmax,
1741 .extra1 = &minolduid,
1742 .extra2 = &maxolduid,
1745 .procname = "overflowgid",
1746 .data = &fs_overflowgid,
1747 .maxlen = sizeof(int),
1749 .proc_handler = proc_dointvec_minmax,
1750 .extra1 = &minolduid,
1751 .extra2 = &maxolduid,
1753 #ifdef CONFIG_FILE_LOCKING
1755 .procname = "leases-enable",
1756 .data = &leases_enable,
1757 .maxlen = sizeof(int),
1759 .proc_handler = proc_dointvec,
1762 #ifdef CONFIG_DNOTIFY
1764 .procname = "dir-notify-enable",
1765 .data = &dir_notify_enable,
1766 .maxlen = sizeof(int),
1768 .proc_handler = proc_dointvec,
1772 #ifdef CONFIG_FILE_LOCKING
1774 .procname = "lease-break-time",
1775 .data = &lease_break_time,
1776 .maxlen = sizeof(int),
1778 .proc_handler = proc_dointvec,
1783 .procname = "aio-nr",
1785 .maxlen = sizeof(aio_nr),
1787 .proc_handler = proc_doulongvec_minmax,
1790 .procname = "aio-max-nr",
1791 .data = &aio_max_nr,
1792 .maxlen = sizeof(aio_max_nr),
1794 .proc_handler = proc_doulongvec_minmax,
1796 #endif /* CONFIG_AIO */
1797 #ifdef CONFIG_INOTIFY_USER
1799 .procname = "inotify",
1801 .child = inotify_table,
1806 .procname = "epoll",
1808 .child = epoll_table,
1813 .procname = "protected_symlinks",
1814 .data = &sysctl_protected_symlinks,
1815 .maxlen = sizeof(int),
1817 .proc_handler = proc_dointvec_minmax,
1822 .procname = "protected_hardlinks",
1823 .data = &sysctl_protected_hardlinks,
1824 .maxlen = sizeof(int),
1826 .proc_handler = proc_dointvec_minmax,
1831 .procname = "protected_fifos",
1832 .data = &sysctl_protected_fifos,
1833 .maxlen = sizeof(int),
1835 .proc_handler = proc_dointvec_minmax,
1840 .procname = "protected_regular",
1841 .data = &sysctl_protected_regular,
1842 .maxlen = sizeof(int),
1844 .proc_handler = proc_dointvec_minmax,
1849 .procname = "suid_dumpable",
1850 .data = &suid_dumpable,
1851 .maxlen = sizeof(int),
1853 .proc_handler = proc_dointvec_minmax_coredump,
1857 #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE)
1859 .procname = "binfmt_misc",
1861 .child = sysctl_mount_point,
1865 .procname = "pipe-max-size",
1866 .data = &pipe_max_size,
1867 .maxlen = sizeof(int),
1869 .proc_handler = &pipe_proc_fn,
1870 .extra1 = &pipe_min_size,
1873 .procname = "pipe-user-pages-hard",
1874 .data = &pipe_user_pages_hard,
1875 .maxlen = sizeof(pipe_user_pages_hard),
1877 .proc_handler = proc_doulongvec_minmax,
1880 .procname = "pipe-user-pages-soft",
1881 .data = &pipe_user_pages_soft,
1882 .maxlen = sizeof(pipe_user_pages_soft),
1884 .proc_handler = proc_doulongvec_minmax,
1887 .procname = "mount-max",
1888 .data = &sysctl_mount_max,
1889 .maxlen = sizeof(unsigned int),
1891 .proc_handler = proc_dointvec_minmax,
1897 static struct ctl_table debug_table[] = {
1898 #ifdef CONFIG_SYSCTL_EXCEPTION_TRACE
1900 .procname = "exception-trace",
1901 .data = &show_unhandled_signals,
1902 .maxlen = sizeof(int),
1904 .proc_handler = proc_dointvec
1907 #if defined(CONFIG_OPTPROBES)
1909 .procname = "kprobes-optimization",
1910 .data = &sysctl_kprobes_optimization,
1911 .maxlen = sizeof(int),
1913 .proc_handler = proc_kprobes_optimization_handler,
1921 static struct ctl_table dev_table[] = {
1925 int __init sysctl_init(void)
1927 struct ctl_table_header *hdr;
1929 hdr = register_sysctl_table(sysctl_base_table);
1930 kmemleak_not_leak(hdr);
1934 #endif /* CONFIG_SYSCTL */
1940 #ifdef CONFIG_PROC_SYSCTL
1942 static int _proc_do_string(char *data, int maxlen, int write,
1943 char __user *buffer,
1944 size_t *lenp, loff_t *ppos)
1950 if (!data || !maxlen || !*lenp) {
1956 if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) {
1957 /* Only continue writes not past the end of buffer. */
1959 if (len > maxlen - 1)
1966 /* Start writing from beginning of buffer. */
1972 while ((p - buffer) < *lenp && len < maxlen - 1) {
1973 if (get_user(c, p++))
1975 if (c == 0 || c == '\n')
1996 if (copy_to_user(buffer, data, len))
1999 if (put_user('\n', buffer + len))
2009 static void warn_sysctl_write(struct ctl_table *table)
2011 pr_warn_once("%s wrote to %s when file position was not 0!\n"
2012 "This will not be supported in the future. To silence this\n"
2013 "warning, set kernel.sysctl_writes_strict = -1\n",
2014 current->comm, table->procname);
2018 * proc_dostring - read a string sysctl
2019 * @table: the sysctl table
2020 * @write: %TRUE if this is a write to the sysctl file
2021 * @buffer: the user buffer
2022 * @lenp: the size of the user buffer
2023 * @ppos: file position
2025 * Reads/writes a string from/to the user buffer. If the kernel
2026 * buffer provided is not large enough to hold the string, the
2027 * string is truncated. The copied string is %NULL-terminated.
2028 * If the string is being read by the user process, it is copied
2029 * and a newline '\n' is added. It is truncated if the buffer is
2032 * Returns 0 on success.
2034 int proc_dostring(struct ctl_table *table, int write,
2035 void __user *buffer, size_t *lenp, loff_t *ppos)
2037 if (write && *ppos && sysctl_writes_strict == SYSCTL_WRITES_WARN)
2038 warn_sysctl_write(table);
2040 return _proc_do_string((char *)(table->data), table->maxlen, write,
2041 (char __user *)buffer, lenp, ppos);
2044 static size_t proc_skip_spaces(char **buf)
2047 char *tmp = skip_spaces(*buf);
2053 static void proc_skip_char(char **buf, size_t *size, const char v)
2063 #define TMPBUFLEN 22
2065 * proc_get_long - reads an ASCII formatted integer from a user buffer
2067 * @buf: a kernel buffer
2068 * @size: size of the kernel buffer
2069 * @val: this is where the number will be stored
2070 * @neg: set to %TRUE if number is negative
2071 * @perm_tr: a vector which contains the allowed trailers
2072 * @perm_tr_len: size of the perm_tr vector
2073 * @tr: pointer to store the trailer character
2075 * In case of success %0 is returned and @buf and @size are updated with
2076 * the amount of bytes read. If @tr is non-NULL and a trailing
2077 * character exists (size is non-zero after returning from this
2078 * function), @tr is updated with the trailing character.
2080 static int proc_get_long(char **buf, size_t *size,
2081 unsigned long *val, bool *neg,
2082 const char *perm_tr, unsigned perm_tr_len, char *tr)
2085 char *p, tmp[TMPBUFLEN];
2091 if (len > TMPBUFLEN - 1)
2092 len = TMPBUFLEN - 1;
2094 memcpy(tmp, *buf, len);
2098 if (*p == '-' && *size > 1) {
2106 *val = simple_strtoul(p, &p, 0);
2110 /* We don't know if the next char is whitespace thus we may accept
2111 * invalid integers (e.g. 1234...a) or two integers instead of one
2112 * (e.g. 123...1). So lets not allow such large numbers. */
2113 if (len == TMPBUFLEN - 1)
2116 if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len))
2119 if (tr && (len < *size))
2129 * proc_put_long - converts an integer to a decimal ASCII formatted string
2131 * @buf: the user buffer
2132 * @size: the size of the user buffer
2133 * @val: the integer to be converted
2134 * @neg: sign of the number, %TRUE for negative
2136 * In case of success %0 is returned and @buf and @size are updated with
2137 * the amount of bytes written.
2139 static int proc_put_long(void __user **buf, size_t *size, unsigned long val,
2143 char tmp[TMPBUFLEN], *p = tmp;
2145 sprintf(p, "%s%lu", neg ? "-" : "", val);
2149 if (copy_to_user(*buf, tmp, len))
2157 static int proc_put_char(void __user **buf, size_t *size, char c)
2160 char __user **buffer = (char __user **)buf;
2161 if (put_user(c, *buffer))
2163 (*size)--, (*buffer)++;
2169 static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
2171 int write, void *data)
2175 if (*lvalp > (unsigned long) INT_MAX + 1)
2179 if (*lvalp > (unsigned long) INT_MAX)
2187 *lvalp = -(unsigned long)val;
2190 *lvalp = (unsigned long)val;
2196 static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp,
2198 int write, void *data)
2203 if (*lvalp > UINT_MAX)
2207 unsigned int val = *valp;
2209 *lvalp = (unsigned long)val;
2214 static const char proc_wspace_sep[] = { ' ', '\t', '\n' };
2216 static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
2217 int write, void __user *buffer,
2218 size_t *lenp, loff_t *ppos,
2219 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
2220 int write, void *data),
2223 int *i, vleft, first = 1, err = 0;
2225 char *kbuf = NULL, *p;
2227 if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) {
2232 i = (int *) tbl_data;
2233 vleft = table->maxlen / sizeof(*i);
2237 conv = do_proc_dointvec_conv;
2241 switch (sysctl_writes_strict) {
2242 case SYSCTL_WRITES_STRICT:
2244 case SYSCTL_WRITES_WARN:
2245 warn_sysctl_write(table);
2252 if (left > PAGE_SIZE - 1)
2253 left = PAGE_SIZE - 1;
2254 p = kbuf = memdup_user_nul(buffer, left);
2256 return PTR_ERR(kbuf);
2259 for (; left && vleft--; i++, first=0) {
2264 left -= proc_skip_spaces(&p);
2268 err = proc_get_long(&p, &left, &lval, &neg,
2270 sizeof(proc_wspace_sep), NULL);
2273 if (conv(&neg, &lval, i, 1, data)) {
2278 if (conv(&neg, &lval, i, 0, data)) {
2283 err = proc_put_char(&buffer, &left, '\t');
2286 err = proc_put_long(&buffer, &left, lval, neg);
2292 if (!write && !first && left && !err)
2293 err = proc_put_char(&buffer, &left, '\n');
2294 if (write && !err && left)
2295 left -= proc_skip_spaces(&p);
2299 return err ? : -EINVAL;
2307 static int do_proc_dointvec(struct ctl_table *table, int write,
2308 void __user *buffer, size_t *lenp, loff_t *ppos,
2309 int (*conv)(bool *negp, unsigned long *lvalp, int *valp,
2310 int write, void *data),
2313 return __do_proc_dointvec(table->data, table, write,
2314 buffer, lenp, ppos, conv, data);
2318 * proc_dointvec - read a vector of integers
2319 * @table: the sysctl table
2320 * @write: %TRUE if this is a write to the sysctl file
2321 * @buffer: the user buffer
2322 * @lenp: the size of the user buffer
2323 * @ppos: file position
2325 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2326 * values from/to the user buffer, treated as an ASCII string.
2328 * Returns 0 on success.
2330 int proc_dointvec(struct ctl_table *table, int write,
2331 void __user *buffer, size_t *lenp, loff_t *ppos)
2333 return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL);
2337 * proc_douintvec - read a vector of unsigned integers
2338 * @table: the sysctl table
2339 * @write: %TRUE if this is a write to the sysctl file
2340 * @buffer: the user buffer
2341 * @lenp: the size of the user buffer
2342 * @ppos: file position
2344 * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer
2345 * values from/to the user buffer, treated as an ASCII string.
2347 * Returns 0 on success.
2349 int proc_douintvec(struct ctl_table *table, int write,
2350 void __user *buffer, size_t *lenp, loff_t *ppos)
2352 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2353 do_proc_douintvec_conv, NULL);
2357 * Taint values can only be increased
2358 * This means we can safely use a temporary.
2360 static int proc_taint(struct ctl_table *table, int write,
2361 void __user *buffer, size_t *lenp, loff_t *ppos)
2364 unsigned long tmptaint = get_taint();
2367 if (write && !capable(CAP_SYS_ADMIN))
2372 err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos);
2378 * Poor man's atomic or. Not worth adding a primitive
2379 * to everyone's atomic.h for this
2382 for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) {
2383 if ((tmptaint >> i) & 1)
2384 add_taint(i, LOCKDEP_STILL_OK);
2391 #ifdef CONFIG_PRINTK
2392 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
2393 void __user *buffer, size_t *lenp, loff_t *ppos)
2395 if (write && !capable(CAP_SYS_ADMIN))
2398 return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2402 struct do_proc_dointvec_minmax_conv_param {
2407 static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
2409 int write, void *data)
2411 struct do_proc_dointvec_minmax_conv_param *param = data;
2415 if (*lvalp > (unsigned long) INT_MAX + 1)
2419 if (*lvalp > (unsigned long) INT_MAX)
2423 if ((param->min && *param->min > val) ||
2424 (param->max && *param->max < val))
2431 *lvalp = -(unsigned long)val;
2434 *lvalp = (unsigned long)val;
2441 * proc_dointvec_minmax - read a vector of integers with min/max values
2442 * @table: the sysctl table
2443 * @write: %TRUE if this is a write to the sysctl file
2444 * @buffer: the user buffer
2445 * @lenp: the size of the user buffer
2446 * @ppos: file position
2448 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2449 * values from/to the user buffer, treated as an ASCII string.
2451 * This routine will ensure the values are within the range specified by
2452 * table->extra1 (min) and table->extra2 (max).
2454 * Returns 0 on success.
2456 int proc_dointvec_minmax(struct ctl_table *table, int write,
2457 void __user *buffer, size_t *lenp, loff_t *ppos)
2459 struct do_proc_dointvec_minmax_conv_param param = {
2460 .min = (int *) table->extra1,
2461 .max = (int *) table->extra2,
2463 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2464 do_proc_dointvec_minmax_conv, ¶m);
2467 static void validate_coredump_safety(void)
2469 #ifdef CONFIG_COREDUMP
2470 if (suid_dumpable == SUID_DUMP_ROOT &&
2471 core_pattern[0] != '/' && core_pattern[0] != '|') {
2472 printk(KERN_WARNING "Unsafe core_pattern used with "\
2473 "suid_dumpable=2. Pipe handler or fully qualified "\
2474 "core dump path required.\n");
2479 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
2480 void __user *buffer, size_t *lenp, loff_t *ppos)
2482 int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
2484 validate_coredump_safety();
2488 #ifdef CONFIG_COREDUMP
2489 static int proc_dostring_coredump(struct ctl_table *table, int write,
2490 void __user *buffer, size_t *lenp, loff_t *ppos)
2492 int error = proc_dostring(table, write, buffer, lenp, ppos);
2494 validate_coredump_safety();
2499 static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write,
2500 void __user *buffer,
2501 size_t *lenp, loff_t *ppos,
2502 unsigned long convmul,
2503 unsigned long convdiv)
2505 unsigned long *i, *min, *max;
2506 int vleft, first = 1, err = 0;
2508 char *kbuf = NULL, *p;
2510 if (!data || !table->maxlen || !*lenp || (*ppos && !write)) {
2515 i = (unsigned long *) data;
2516 min = (unsigned long *) table->extra1;
2517 max = (unsigned long *) table->extra2;
2518 vleft = table->maxlen / sizeof(unsigned long);
2523 switch (sysctl_writes_strict) {
2524 case SYSCTL_WRITES_STRICT:
2526 case SYSCTL_WRITES_WARN:
2527 warn_sysctl_write(table);
2534 if (left > PAGE_SIZE - 1)
2535 left = PAGE_SIZE - 1;
2536 p = kbuf = memdup_user_nul(buffer, left);
2538 return PTR_ERR(kbuf);
2541 for (; left && vleft--; i++, first = 0) {
2547 left -= proc_skip_spaces(&p);
2551 err = proc_get_long(&p, &left, &val, &neg,
2553 sizeof(proc_wspace_sep), NULL);
2558 val = convmul * val / convdiv;
2559 if ((min && val < *min) || (max && val > *max)) {
2565 val = convdiv * (*i) / convmul;
2567 err = proc_put_char(&buffer, &left, '\t');
2571 err = proc_put_long(&buffer, &left, val, false);
2577 if (!write && !first && left && !err)
2578 err = proc_put_char(&buffer, &left, '\n');
2580 left -= proc_skip_spaces(&p);
2584 return err ? : -EINVAL;
2592 static int do_proc_doulongvec_minmax(struct ctl_table *table, int write,
2593 void __user *buffer,
2594 size_t *lenp, loff_t *ppos,
2595 unsigned long convmul,
2596 unsigned long convdiv)
2598 return __do_proc_doulongvec_minmax(table->data, table, write,
2599 buffer, lenp, ppos, convmul, convdiv);
2603 * proc_doulongvec_minmax - read a vector of long integers with min/max values
2604 * @table: the sysctl table
2605 * @write: %TRUE if this is a write to the sysctl file
2606 * @buffer: the user buffer
2607 * @lenp: the size of the user buffer
2608 * @ppos: file position
2610 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2611 * values from/to the user buffer, treated as an ASCII string.
2613 * This routine will ensure the values are within the range specified by
2614 * table->extra1 (min) and table->extra2 (max).
2616 * Returns 0 on success.
2618 int proc_doulongvec_minmax(struct ctl_table *table, int write,
2619 void __user *buffer, size_t *lenp, loff_t *ppos)
2621 return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l);
2625 * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values
2626 * @table: the sysctl table
2627 * @write: %TRUE if this is a write to the sysctl file
2628 * @buffer: the user buffer
2629 * @lenp: the size of the user buffer
2630 * @ppos: file position
2632 * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long
2633 * values from/to the user buffer, treated as an ASCII string. The values
2634 * are treated as milliseconds, and converted to jiffies when they are stored.
2636 * This routine will ensure the values are within the range specified by
2637 * table->extra1 (min) and table->extra2 (max).
2639 * Returns 0 on success.
2641 int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
2642 void __user *buffer,
2643 size_t *lenp, loff_t *ppos)
2645 return do_proc_doulongvec_minmax(table, write, buffer,
2646 lenp, ppos, HZ, 1000l);
2650 static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp,
2652 int write, void *data)
2655 if (*lvalp > LONG_MAX / HZ)
2657 *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ);
2663 lval = -(unsigned long)val;
2666 lval = (unsigned long)val;
2673 static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp,
2675 int write, void *data)
2678 if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ)
2680 *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp);
2686 lval = -(unsigned long)val;
2689 lval = (unsigned long)val;
2691 *lvalp = jiffies_to_clock_t(lval);
2696 static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp,
2698 int write, void *data)
2701 unsigned long jif = msecs_to_jiffies(*negp ? -*lvalp : *lvalp);
2711 lval = -(unsigned long)val;
2714 lval = (unsigned long)val;
2716 *lvalp = jiffies_to_msecs(lval);
2722 * proc_dointvec_jiffies - read a vector of integers as seconds
2723 * @table: the sysctl table
2724 * @write: %TRUE if this is a write to the sysctl file
2725 * @buffer: the user buffer
2726 * @lenp: the size of the user buffer
2727 * @ppos: file position
2729 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2730 * values from/to the user buffer, treated as an ASCII string.
2731 * The values read are assumed to be in seconds, and are converted into
2734 * Returns 0 on success.
2736 int proc_dointvec_jiffies(struct ctl_table *table, int write,
2737 void __user *buffer, size_t *lenp, loff_t *ppos)
2739 return do_proc_dointvec(table,write,buffer,lenp,ppos,
2740 do_proc_dointvec_jiffies_conv,NULL);
2744 * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds
2745 * @table: the sysctl table
2746 * @write: %TRUE if this is a write to the sysctl file
2747 * @buffer: the user buffer
2748 * @lenp: the size of the user buffer
2749 * @ppos: pointer to the file position
2751 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2752 * values from/to the user buffer, treated as an ASCII string.
2753 * The values read are assumed to be in 1/USER_HZ seconds, and
2754 * are converted into jiffies.
2756 * Returns 0 on success.
2758 int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
2759 void __user *buffer, size_t *lenp, loff_t *ppos)
2761 return do_proc_dointvec(table,write,buffer,lenp,ppos,
2762 do_proc_dointvec_userhz_jiffies_conv,NULL);
2766 * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds
2767 * @table: the sysctl table
2768 * @write: %TRUE if this is a write to the sysctl file
2769 * @buffer: the user buffer
2770 * @lenp: the size of the user buffer
2771 * @ppos: file position
2772 * @ppos: the current position in the file
2774 * Reads/writes up to table->maxlen/sizeof(unsigned int) integer
2775 * values from/to the user buffer, treated as an ASCII string.
2776 * The values read are assumed to be in 1/1000 seconds, and
2777 * are converted into jiffies.
2779 * Returns 0 on success.
2781 int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
2782 void __user *buffer, size_t *lenp, loff_t *ppos)
2784 return do_proc_dointvec(table, write, buffer, lenp, ppos,
2785 do_proc_dointvec_ms_jiffies_conv, NULL);
2788 static int proc_do_cad_pid(struct ctl_table *table, int write,
2789 void __user *buffer, size_t *lenp, loff_t *ppos)
2791 struct pid *new_pid;
2795 tmp = pid_vnr(cad_pid);
2797 r = __do_proc_dointvec(&tmp, table, write, buffer,
2798 lenp, ppos, NULL, NULL);
2802 new_pid = find_get_pid(tmp);
2806 put_pid(xchg(&cad_pid, new_pid));
2811 * proc_do_large_bitmap - read/write from/to a large bitmap
2812 * @table: the sysctl table
2813 * @write: %TRUE if this is a write to the sysctl file
2814 * @buffer: the user buffer
2815 * @lenp: the size of the user buffer
2816 * @ppos: file position
2818 * The bitmap is stored at table->data and the bitmap length (in bits)
2821 * We use a range comma separated format (e.g. 1,3-4,10-10) so that
2822 * large bitmaps may be represented in a compact manner. Writing into
2823 * the file will clear the bitmap then update it with the given input.
2825 * Returns 0 on success.
2827 int proc_do_large_bitmap(struct ctl_table *table, int write,
2828 void __user *buffer, size_t *lenp, loff_t *ppos)
2832 size_t left = *lenp;
2833 unsigned long bitmap_len = table->maxlen;
2834 unsigned long *bitmap = *(unsigned long **) table->data;
2835 unsigned long *tmp_bitmap = NULL;
2836 char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c;
2838 if (!bitmap || !bitmap_len || !left || (*ppos && !write)) {
2846 if (left > PAGE_SIZE - 1)
2847 left = PAGE_SIZE - 1;
2849 p = kbuf = memdup_user_nul(buffer, left);
2851 return PTR_ERR(kbuf);
2853 tmp_bitmap = kzalloc(BITS_TO_LONGS(bitmap_len) * sizeof(unsigned long),
2859 proc_skip_char(&p, &left, '\n');
2860 while (!err && left) {
2861 unsigned long val_a, val_b;
2864 err = proc_get_long(&p, &left, &val_a, &neg, tr_a,
2868 if (val_a >= bitmap_len || neg) {
2880 err = proc_get_long(&p, &left, &val_b,
2881 &neg, tr_b, sizeof(tr_b),
2885 if (val_b >= bitmap_len || neg ||
2896 bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1);
2898 proc_skip_char(&p, &left, '\n');
2902 unsigned long bit_a, bit_b = 0;
2905 bit_a = find_next_bit(bitmap, bitmap_len, bit_b);
2906 if (bit_a >= bitmap_len)
2908 bit_b = find_next_zero_bit(bitmap, bitmap_len,
2912 err = proc_put_char(&buffer, &left, ',');
2916 err = proc_put_long(&buffer, &left, bit_a, false);
2919 if (bit_a != bit_b) {
2920 err = proc_put_char(&buffer, &left, '-');
2923 err = proc_put_long(&buffer, &left, bit_b, false);
2931 err = proc_put_char(&buffer, &left, '\n');
2937 bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len);
2939 bitmap_copy(bitmap, tmp_bitmap, bitmap_len);
2951 #else /* CONFIG_PROC_SYSCTL */
2953 int proc_dostring(struct ctl_table *table, int write,
2954 void __user *buffer, size_t *lenp, loff_t *ppos)
2959 int proc_dointvec(struct ctl_table *table, int write,
2960 void __user *buffer, size_t *lenp, loff_t *ppos)
2965 int proc_douintvec(struct ctl_table *table, int write,
2966 void __user *buffer, size_t *lenp, loff_t *ppos)
2971 int proc_dointvec_minmax(struct ctl_table *table, int write,
2972 void __user *buffer, size_t *lenp, loff_t *ppos)
2977 int proc_dointvec_jiffies(struct ctl_table *table, int write,
2978 void __user *buffer, size_t *lenp, loff_t *ppos)
2983 int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write,
2984 void __user *buffer, size_t *lenp, loff_t *ppos)
2989 int proc_dointvec_ms_jiffies(struct ctl_table *table, int write,
2990 void __user *buffer, size_t *lenp, loff_t *ppos)
2995 int proc_doulongvec_minmax(struct ctl_table *table, int write,
2996 void __user *buffer, size_t *lenp, loff_t *ppos)
3001 int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write,
3002 void __user *buffer,
3003 size_t *lenp, loff_t *ppos)
3009 #endif /* CONFIG_PROC_SYSCTL */
3012 * No sense putting this after each symbol definition, twice,
3013 * exception granted :-)
3015 EXPORT_SYMBOL(proc_dointvec);
3016 EXPORT_SYMBOL(proc_douintvec);
3017 EXPORT_SYMBOL(proc_dointvec_jiffies);
3018 EXPORT_SYMBOL(proc_dointvec_minmax);
3019 EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
3020 EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
3021 EXPORT_SYMBOL(proc_dostring);
3022 EXPORT_SYMBOL(proc_doulongvec_minmax);
3023 EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);