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457c8996 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * sysctl.c: General linux system control interface | |
4 | * | |
5 | * Begun 24 March 1995, Stephen Tweedie | |
6 | * Added /proc support, Dec 1995 | |
7 | * Added bdflush entry and intvec min/max checking, 2/23/96, Tom Dyas. | |
8 | * Added hooks for /proc/sys/net (minor, minor patch), 96/4/1, Mike Shaver. | |
9 | * Added kernel/java-{interpreter,appletviewer}, 96/5/10, Mike Shaver. | |
10 | * Dynamic registration fixes, Stephen Tweedie. | |
11 | * Added kswapd-interval, ctrl-alt-del, printk stuff, 1/8/97, Chris Horn. | |
12 | * Made sysctl support optional via CONFIG_SYSCTL, 1/10/97, Chris | |
13 | * Horn. | |
14 | * Added proc_doulongvec_ms_jiffies_minmax, 09/08/99, Carlos H. Bauer. | |
15 | * Added proc_doulongvec_minmax, 09/08/99, Carlos H. Bauer. | |
16 | * Changed linked lists to use list.h instead of lists.h, 02/24/00, Bill | |
17 | * Wendling. | |
18 | * The list_for_each() macro wasn't appropriate for the sysctl loop. | |
19 | * Removed it and replaced it with older style, 03/23/00, Bill Wendling | |
20 | */ | |
21 | ||
1da177e4 | 22 | #include <linux/module.h> |
e2e40f2c | 23 | #include <linux/aio.h> |
1da177e4 LT |
24 | #include <linux/mm.h> |
25 | #include <linux/swap.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/sysctl.h> | |
5a04cca6 | 28 | #include <linux/bitmap.h> |
d33ed52d | 29 | #include <linux/signal.h> |
455cd5ab | 30 | #include <linux/printk.h> |
1da177e4 | 31 | #include <linux/proc_fs.h> |
72c2d582 | 32 | #include <linux/security.h> |
1da177e4 | 33 | #include <linux/ctype.h> |
fd4b616b | 34 | #include <linux/kmemleak.h> |
62239ac2 | 35 | #include <linux/fs.h> |
1da177e4 LT |
36 | #include <linux/init.h> |
37 | #include <linux/kernel.h> | |
0296b228 | 38 | #include <linux/kobject.h> |
20380731 | 39 | #include <linux/net.h> |
1da177e4 LT |
40 | #include <linux/sysrq.h> |
41 | #include <linux/highuid.h> | |
42 | #include <linux/writeback.h> | |
3fff4c42 | 43 | #include <linux/ratelimit.h> |
76ab0f53 | 44 | #include <linux/compaction.h> |
1da177e4 | 45 | #include <linux/hugetlb.h> |
1da177e4 | 46 | #include <linux/initrd.h> |
0b77f5bf | 47 | #include <linux/key.h> |
1da177e4 LT |
48 | #include <linux/times.h> |
49 | #include <linux/limits.h> | |
50 | #include <linux/dcache.h> | |
6e006701 | 51 | #include <linux/dnotify.h> |
1da177e4 | 52 | #include <linux/syscalls.h> |
c748e134 | 53 | #include <linux/vmstat.h> |
c255d844 PM |
54 | #include <linux/nfs_fs.h> |
55 | #include <linux/acpi.h> | |
10a0a8d4 | 56 | #include <linux/reboot.h> |
b0fc494f | 57 | #include <linux/ftrace.h> |
cdd6c482 | 58 | #include <linux/perf_event.h> |
b2be84df | 59 | #include <linux/kprobes.h> |
b492e95b | 60 | #include <linux/pipe_fs_i.h> |
8e4228e1 | 61 | #include <linux/oom.h> |
17f60a7d | 62 | #include <linux/kmod.h> |
73efc039 | 63 | #include <linux/capability.h> |
40401530 | 64 | #include <linux/binfmts.h> |
cf4aebc2 | 65 | #include <linux/sched/sysctl.h> |
f7ccbae4 | 66 | #include <linux/sched/coredump.h> |
7984754b | 67 | #include <linux/kexec.h> |
1be7f75d | 68 | #include <linux/bpf.h> |
d2921684 | 69 | #include <linux/mount.h> |
cefdca0a | 70 | #include <linux/userfaultfd_k.h> |
1da177e4 | 71 | |
7f2923c4 CB |
72 | #include "../lib/kstrtox.h" |
73 | ||
7c0f6ba6 | 74 | #include <linux/uaccess.h> |
1da177e4 LT |
75 | #include <asm/processor.h> |
76 | ||
29cbc78b AK |
77 | #ifdef CONFIG_X86 |
78 | #include <asm/nmi.h> | |
0741f4d2 | 79 | #include <asm/stacktrace.h> |
6e7c4025 | 80 | #include <asm/io.h> |
29cbc78b | 81 | #endif |
d550bbd4 DH |
82 | #ifdef CONFIG_SPARC |
83 | #include <asm/setup.h> | |
84 | #endif | |
c55b7c3e DY |
85 | #ifdef CONFIG_BSD_PROCESS_ACCT |
86 | #include <linux/acct.h> | |
87 | #endif | |
4f0e056f DY |
88 | #ifdef CONFIG_RT_MUTEXES |
89 | #include <linux/rtmutex.h> | |
90 | #endif | |
2edf5e49 DY |
91 | #if defined(CONFIG_PROVE_LOCKING) || defined(CONFIG_LOCK_STAT) |
92 | #include <linux/lockdep.h> | |
93 | #endif | |
15485a46 DY |
94 | #ifdef CONFIG_CHR_DEV_SG |
95 | #include <scsi/sg.h> | |
96 | #endif | |
964c9dff AP |
97 | #ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE |
98 | #include <linux/stackleak.h> | |
99 | #endif | |
58687acb | 100 | #ifdef CONFIG_LOCKUP_DETECTOR |
504d7cf1 DZ |
101 | #include <linux/nmi.h> |
102 | #endif | |
103 | ||
1da177e4 LT |
104 | #if defined(CONFIG_SYSCTL) |
105 | ||
106 | /* External variables not in a header file. */ | |
d6e71144 | 107 | extern int suid_dumpable; |
046d662f AK |
108 | #ifdef CONFIG_COREDUMP |
109 | extern int core_uses_pid; | |
1da177e4 | 110 | extern char core_pattern[]; |
a293980c | 111 | extern unsigned int core_pipe_limit; |
046d662f | 112 | #endif |
1da177e4 | 113 | extern int pid_max; |
1da177e4 | 114 | extern int pid_max_min, pid_max_max; |
8ad4b1fb | 115 | extern int percpu_pagelist_fraction; |
9745512c | 116 | extern int latencytop_enabled; |
9b80a184 | 117 | extern unsigned int sysctl_nr_open_min, sysctl_nr_open_max; |
dd8632a1 PM |
118 | #ifndef CONFIG_MMU |
119 | extern int sysctl_nr_trim_pages; | |
120 | #endif | |
1da177e4 | 121 | |
c4f3b63f | 122 | /* Constants used for minimum and maximum */ |
2508ce18 | 123 | #ifdef CONFIG_LOCKUP_DETECTOR |
c4f3b63f RT |
124 | static int sixty = 60; |
125 | #endif | |
126 | ||
270750db | 127 | static int __maybe_unused neg_one = -1; |
cd5f9a4c | 128 | static int __maybe_unused two = 2; |
5509a5d2 | 129 | static int __maybe_unused four = 4; |
9002b214 | 130 | static unsigned long zero_ul; |
fc3501d4 | 131 | static unsigned long one_ul = 1; |
32a5ad9c | 132 | static unsigned long long_max = LONG_MAX; |
c4f3b63f | 133 | static int one_hundred = 100; |
795ae7a0 | 134 | static int one_thousand = 1000; |
af91322e DY |
135 | #ifdef CONFIG_PRINTK |
136 | static int ten_thousand = 10000; | |
137 | #endif | |
c5dfd78e ACM |
138 | #ifdef CONFIG_PERF_EVENTS |
139 | static int six_hundred_forty_kb = 640 * 1024; | |
140 | #endif | |
c4f3b63f | 141 | |
9e4a5bda AR |
142 | /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */ |
143 | static unsigned long dirty_bytes_min = 2 * PAGE_SIZE; | |
144 | ||
1da177e4 LT |
145 | /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */ |
146 | static int maxolduid = 65535; | |
147 | static int minolduid; | |
148 | ||
149 | static int ngroups_max = NGROUPS_MAX; | |
73efc039 | 150 | static const int cap_last_cap = CAP_LAST_CAP; |
1da177e4 | 151 | |
a2e51445 DV |
152 | /* |
153 | * This is needed for proc_doulongvec_minmax of sysctl_hung_task_timeout_secs | |
154 | * and hung_task_check_interval_secs | |
155 | */ | |
80df2847 LH |
156 | #ifdef CONFIG_DETECT_HUNG_TASK |
157 | static unsigned long hung_task_timeout_max = (LONG_MAX/HZ); | |
158 | #endif | |
159 | ||
d14f1729 DY |
160 | #ifdef CONFIG_INOTIFY_USER |
161 | #include <linux/inotify.h> | |
162 | #endif | |
72c57ed5 | 163 | #ifdef CONFIG_SPARC |
1da177e4 LT |
164 | #endif |
165 | ||
166 | #ifdef __hppa__ | |
167 | extern int pwrsw_enabled; | |
bf14e3b9 VG |
168 | #endif |
169 | ||
170 | #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW | |
1da177e4 LT |
171 | extern int unaligned_enabled; |
172 | #endif | |
1da177e4 | 173 | |
d2b176ed | 174 | #ifdef CONFIG_IA64 |
88fc241f | 175 | extern int unaligned_dump_stack; |
d2b176ed JS |
176 | #endif |
177 | ||
b6fca725 VG |
178 | #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN |
179 | extern int no_unaligned_warning; | |
180 | #endif | |
181 | ||
d6f8ff73 | 182 | #ifdef CONFIG_PROC_SYSCTL |
f4aacea2 | 183 | |
a19ac337 LR |
184 | /** |
185 | * enum sysctl_writes_mode - supported sysctl write modes | |
186 | * | |
187 | * @SYSCTL_WRITES_LEGACY: each write syscall must fully contain the sysctl value | |
65f50f25 WH |
188 | * to be written, and multiple writes on the same sysctl file descriptor |
189 | * will rewrite the sysctl value, regardless of file position. No warning | |
190 | * is issued when the initial position is not 0. | |
a19ac337 | 191 | * @SYSCTL_WRITES_WARN: same as above but warn when the initial file position is |
65f50f25 | 192 | * not 0. |
a19ac337 | 193 | * @SYSCTL_WRITES_STRICT: writes to numeric sysctl entries must always be at |
65f50f25 WH |
194 | * file position 0 and the value must be fully contained in the buffer |
195 | * sent to the write syscall. If dealing with strings respect the file | |
196 | * position, but restrict this to the max length of the buffer, anything | |
197 | * passed the max length will be ignored. Multiple writes will append | |
198 | * to the buffer. | |
a19ac337 LR |
199 | * |
200 | * These write modes control how current file position affects the behavior of | |
201 | * updating sysctl values through the proc interface on each write. | |
202 | */ | |
203 | enum sysctl_writes_mode { | |
204 | SYSCTL_WRITES_LEGACY = -1, | |
205 | SYSCTL_WRITES_WARN = 0, | |
206 | SYSCTL_WRITES_STRICT = 1, | |
207 | }; | |
f4aacea2 | 208 | |
a19ac337 | 209 | static enum sysctl_writes_mode sysctl_writes_strict = SYSCTL_WRITES_STRICT; |
f4aacea2 | 210 | |
8d65af78 | 211 | static int proc_do_cad_pid(struct ctl_table *table, int write, |
9ec52099 | 212 | void __user *buffer, size_t *lenp, loff_t *ppos); |
8d65af78 | 213 | static int proc_taint(struct ctl_table *table, int write, |
34f5a398 | 214 | void __user *buffer, size_t *lenp, loff_t *ppos); |
d6f8ff73 | 215 | #endif |
9ec52099 | 216 | |
bfdc0b49 | 217 | #ifdef CONFIG_PRINTK |
620f6e8e | 218 | static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
bfdc0b49 RW |
219 | void __user *buffer, size_t *lenp, loff_t *ppos); |
220 | #endif | |
221 | ||
54b50199 KC |
222 | static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, |
223 | void __user *buffer, size_t *lenp, loff_t *ppos); | |
046d662f | 224 | #ifdef CONFIG_COREDUMP |
54b50199 KC |
225 | static int proc_dostring_coredump(struct ctl_table *table, int write, |
226 | void __user *buffer, size_t *lenp, loff_t *ppos); | |
046d662f | 227 | #endif |
319e0a21 EB |
228 | static int proc_dopipe_max_size(struct ctl_table *table, int write, |
229 | void __user *buffer, size_t *lenp, loff_t *ppos); | |
54b50199 | 230 | |
97f5f0cd | 231 | #ifdef CONFIG_MAGIC_SYSRQ |
5f733e8a | 232 | /* Note: sysrq code uses its own private copy */ |
8eaede49 | 233 | static int __sysrq_enabled = CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE; |
97f5f0cd | 234 | |
6f8fd1d7 | 235 | static int sysrq_sysctl_handler(struct ctl_table *table, int write, |
97f5f0cd DT |
236 | void __user *buffer, size_t *lenp, |
237 | loff_t *ppos) | |
238 | { | |
239 | int error; | |
240 | ||
241 | error = proc_dointvec(table, write, buffer, lenp, ppos); | |
242 | if (error) | |
243 | return error; | |
244 | ||
245 | if (write) | |
246 | sysrq_toggle_support(__sysrq_enabled); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | #endif | |
252 | ||
d8217f07 EB |
253 | static struct ctl_table kern_table[]; |
254 | static struct ctl_table vm_table[]; | |
255 | static struct ctl_table fs_table[]; | |
256 | static struct ctl_table debug_table[]; | |
257 | static struct ctl_table dev_table[]; | |
258 | extern struct ctl_table random_table[]; | |
7ef9964e DL |
259 | #ifdef CONFIG_EPOLL |
260 | extern struct ctl_table epoll_table[]; | |
261 | #endif | |
1da177e4 | 262 | |
ceb18132 LR |
263 | #ifdef CONFIG_FW_LOADER_USER_HELPER |
264 | extern struct ctl_table firmware_config_table[]; | |
265 | #endif | |
266 | ||
1da177e4 LT |
267 | #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT |
268 | int sysctl_legacy_va_layout; | |
269 | #endif | |
270 | ||
1da177e4 LT |
271 | /* The default sysctl tables: */ |
272 | ||
de4e83bd | 273 | static struct ctl_table sysctl_base_table[] = { |
1da177e4 | 274 | { |
1da177e4 LT |
275 | .procname = "kernel", |
276 | .mode = 0555, | |
277 | .child = kern_table, | |
278 | }, | |
279 | { | |
1da177e4 LT |
280 | .procname = "vm", |
281 | .mode = 0555, | |
282 | .child = vm_table, | |
283 | }, | |
1da177e4 | 284 | { |
1da177e4 LT |
285 | .procname = "fs", |
286 | .mode = 0555, | |
287 | .child = fs_table, | |
288 | }, | |
289 | { | |
1da177e4 LT |
290 | .procname = "debug", |
291 | .mode = 0555, | |
292 | .child = debug_table, | |
293 | }, | |
294 | { | |
1da177e4 LT |
295 | .procname = "dev", |
296 | .mode = 0555, | |
297 | .child = dev_table, | |
298 | }, | |
6fce56ec | 299 | { } |
1da177e4 LT |
300 | }; |
301 | ||
77e54a1f | 302 | #ifdef CONFIG_SCHED_DEBUG |
73c4efd2 ED |
303 | static int min_sched_granularity_ns = 100000; /* 100 usecs */ |
304 | static int max_sched_granularity_ns = NSEC_PER_SEC; /* 1 second */ | |
305 | static int min_wakeup_granularity_ns; /* 0 usecs */ | |
306 | static int max_wakeup_granularity_ns = NSEC_PER_SEC; /* 1 second */ | |
cbee9f88 | 307 | #ifdef CONFIG_SMP |
1983a922 CE |
308 | static int min_sched_tunable_scaling = SCHED_TUNABLESCALING_NONE; |
309 | static int max_sched_tunable_scaling = SCHED_TUNABLESCALING_END-1; | |
cbee9f88 PZ |
310 | #endif /* CONFIG_SMP */ |
311 | #endif /* CONFIG_SCHED_DEBUG */ | |
77e54a1f | 312 | |
5e771905 MG |
313 | #ifdef CONFIG_COMPACTION |
314 | static int min_extfrag_threshold; | |
315 | static int max_extfrag_threshold = 1000; | |
316 | #endif | |
317 | ||
d8217f07 | 318 | static struct ctl_table kern_table[] = { |
2bba22c5 | 319 | { |
2bba22c5 MG |
320 | .procname = "sched_child_runs_first", |
321 | .data = &sysctl_sched_child_runs_first, | |
322 | .maxlen = sizeof(unsigned int), | |
323 | .mode = 0644, | |
6d456111 | 324 | .proc_handler = proc_dointvec, |
2bba22c5 | 325 | }, |
77e54a1f IM |
326 | #ifdef CONFIG_SCHED_DEBUG |
327 | { | |
b2be5e96 PZ |
328 | .procname = "sched_min_granularity_ns", |
329 | .data = &sysctl_sched_min_granularity, | |
77e54a1f IM |
330 | .maxlen = sizeof(unsigned int), |
331 | .mode = 0644, | |
702a7c76 | 332 | .proc_handler = sched_proc_update_handler, |
b2be5e96 PZ |
333 | .extra1 = &min_sched_granularity_ns, |
334 | .extra2 = &max_sched_granularity_ns, | |
77e54a1f | 335 | }, |
21805085 | 336 | { |
21805085 PZ |
337 | .procname = "sched_latency_ns", |
338 | .data = &sysctl_sched_latency, | |
339 | .maxlen = sizeof(unsigned int), | |
340 | .mode = 0644, | |
702a7c76 | 341 | .proc_handler = sched_proc_update_handler, |
21805085 PZ |
342 | .extra1 = &min_sched_granularity_ns, |
343 | .extra2 = &max_sched_granularity_ns, | |
344 | }, | |
77e54a1f | 345 | { |
77e54a1f IM |
346 | .procname = "sched_wakeup_granularity_ns", |
347 | .data = &sysctl_sched_wakeup_granularity, | |
348 | .maxlen = sizeof(unsigned int), | |
349 | .mode = 0644, | |
702a7c76 | 350 | .proc_handler = sched_proc_update_handler, |
77e54a1f IM |
351 | .extra1 = &min_wakeup_granularity_ns, |
352 | .extra2 = &max_wakeup_granularity_ns, | |
353 | }, | |
cbee9f88 | 354 | #ifdef CONFIG_SMP |
1983a922 | 355 | { |
1983a922 CE |
356 | .procname = "sched_tunable_scaling", |
357 | .data = &sysctl_sched_tunable_scaling, | |
358 | .maxlen = sizeof(enum sched_tunable_scaling), | |
359 | .mode = 0644, | |
702a7c76 | 360 | .proc_handler = sched_proc_update_handler, |
1983a922 CE |
361 | .extra1 = &min_sched_tunable_scaling, |
362 | .extra2 = &max_sched_tunable_scaling, | |
2398f2c6 | 363 | }, |
da84d961 | 364 | { |
d00535db | 365 | .procname = "sched_migration_cost_ns", |
da84d961 IM |
366 | .data = &sysctl_sched_migration_cost, |
367 | .maxlen = sizeof(unsigned int), | |
368 | .mode = 0644, | |
6d456111 | 369 | .proc_handler = proc_dointvec, |
da84d961 | 370 | }, |
b82d9fdd | 371 | { |
b82d9fdd PZ |
372 | .procname = "sched_nr_migrate", |
373 | .data = &sysctl_sched_nr_migrate, | |
374 | .maxlen = sizeof(unsigned int), | |
fa85ae24 | 375 | .mode = 0644, |
6d456111 | 376 | .proc_handler = proc_dointvec, |
fa85ae24 | 377 | }, |
cb251765 MG |
378 | #ifdef CONFIG_SCHEDSTATS |
379 | { | |
380 | .procname = "sched_schedstats", | |
381 | .data = NULL, | |
382 | .maxlen = sizeof(unsigned int), | |
383 | .mode = 0644, | |
384 | .proc_handler = sysctl_schedstats, | |
eec4844f MC |
385 | .extra1 = SYSCTL_ZERO, |
386 | .extra2 = SYSCTL_ONE, | |
cb251765 MG |
387 | }, |
388 | #endif /* CONFIG_SCHEDSTATS */ | |
cbee9f88 PZ |
389 | #endif /* CONFIG_SMP */ |
390 | #ifdef CONFIG_NUMA_BALANCING | |
4b96a29b PZ |
391 | { |
392 | .procname = "numa_balancing_scan_delay_ms", | |
393 | .data = &sysctl_numa_balancing_scan_delay, | |
394 | .maxlen = sizeof(unsigned int), | |
395 | .mode = 0644, | |
396 | .proc_handler = proc_dointvec, | |
397 | }, | |
cbee9f88 PZ |
398 | { |
399 | .procname = "numa_balancing_scan_period_min_ms", | |
400 | .data = &sysctl_numa_balancing_scan_period_min, | |
401 | .maxlen = sizeof(unsigned int), | |
402 | .mode = 0644, | |
403 | .proc_handler = proc_dointvec, | |
404 | }, | |
405 | { | |
406 | .procname = "numa_balancing_scan_period_max_ms", | |
407 | .data = &sysctl_numa_balancing_scan_period_max, | |
408 | .maxlen = sizeof(unsigned int), | |
409 | .mode = 0644, | |
410 | .proc_handler = proc_dointvec, | |
411 | }, | |
6e5fb223 PZ |
412 | { |
413 | .procname = "numa_balancing_scan_size_mb", | |
414 | .data = &sysctl_numa_balancing_scan_size, | |
415 | .maxlen = sizeof(unsigned int), | |
416 | .mode = 0644, | |
64192658 | 417 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 418 | .extra1 = SYSCTL_ONE, |
6e5fb223 | 419 | }, |
54a43d54 AK |
420 | { |
421 | .procname = "numa_balancing", | |
422 | .data = NULL, /* filled in by handler */ | |
423 | .maxlen = sizeof(unsigned int), | |
424 | .mode = 0644, | |
425 | .proc_handler = sysctl_numa_balancing, | |
eec4844f MC |
426 | .extra1 = SYSCTL_ZERO, |
427 | .extra2 = SYSCTL_ONE, | |
54a43d54 | 428 | }, |
cbee9f88 PZ |
429 | #endif /* CONFIG_NUMA_BALANCING */ |
430 | #endif /* CONFIG_SCHED_DEBUG */ | |
9f0c1e56 | 431 | { |
9f0c1e56 PZ |
432 | .procname = "sched_rt_period_us", |
433 | .data = &sysctl_sched_rt_period, | |
434 | .maxlen = sizeof(unsigned int), | |
435 | .mode = 0644, | |
6d456111 | 436 | .proc_handler = sched_rt_handler, |
9f0c1e56 PZ |
437 | }, |
438 | { | |
9f0c1e56 PZ |
439 | .procname = "sched_rt_runtime_us", |
440 | .data = &sysctl_sched_rt_runtime, | |
441 | .maxlen = sizeof(int), | |
442 | .mode = 0644, | |
6d456111 | 443 | .proc_handler = sched_rt_handler, |
9f0c1e56 | 444 | }, |
ce0dbbbb CW |
445 | { |
446 | .procname = "sched_rr_timeslice_ms", | |
975e155e | 447 | .data = &sysctl_sched_rr_timeslice, |
ce0dbbbb CW |
448 | .maxlen = sizeof(int), |
449 | .mode = 0644, | |
450 | .proc_handler = sched_rr_handler, | |
451 | }, | |
e8f14172 PB |
452 | #ifdef CONFIG_UCLAMP_TASK |
453 | { | |
454 | .procname = "sched_util_clamp_min", | |
455 | .data = &sysctl_sched_uclamp_util_min, | |
456 | .maxlen = sizeof(unsigned int), | |
457 | .mode = 0644, | |
458 | .proc_handler = sysctl_sched_uclamp_handler, | |
459 | }, | |
460 | { | |
461 | .procname = "sched_util_clamp_max", | |
462 | .data = &sysctl_sched_uclamp_util_max, | |
463 | .maxlen = sizeof(unsigned int), | |
464 | .mode = 0644, | |
465 | .proc_handler = sysctl_sched_uclamp_handler, | |
466 | }, | |
467 | #endif | |
5091faa4 MG |
468 | #ifdef CONFIG_SCHED_AUTOGROUP |
469 | { | |
470 | .procname = "sched_autogroup_enabled", | |
471 | .data = &sysctl_sched_autogroup_enabled, | |
472 | .maxlen = sizeof(unsigned int), | |
473 | .mode = 0644, | |
1747b21f | 474 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
475 | .extra1 = SYSCTL_ZERO, |
476 | .extra2 = SYSCTL_ONE, | |
5091faa4 MG |
477 | }, |
478 | #endif | |
ec12cb7f PT |
479 | #ifdef CONFIG_CFS_BANDWIDTH |
480 | { | |
481 | .procname = "sched_cfs_bandwidth_slice_us", | |
482 | .data = &sysctl_sched_cfs_bandwidth_slice, | |
483 | .maxlen = sizeof(unsigned int), | |
484 | .mode = 0644, | |
485 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 486 | .extra1 = SYSCTL_ONE, |
ec12cb7f PT |
487 | }, |
488 | #endif | |
8d5d0cfb QP |
489 | #if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) |
490 | { | |
491 | .procname = "sched_energy_aware", | |
492 | .data = &sysctl_sched_energy_aware, | |
493 | .maxlen = sizeof(unsigned int), | |
494 | .mode = 0644, | |
495 | .proc_handler = sched_energy_aware_handler, | |
eec4844f MC |
496 | .extra1 = SYSCTL_ZERO, |
497 | .extra2 = SYSCTL_ONE, | |
8d5d0cfb QP |
498 | }, |
499 | #endif | |
f20786ff PZ |
500 | #ifdef CONFIG_PROVE_LOCKING |
501 | { | |
f20786ff PZ |
502 | .procname = "prove_locking", |
503 | .data = &prove_locking, | |
504 | .maxlen = sizeof(int), | |
505 | .mode = 0644, | |
6d456111 | 506 | .proc_handler = proc_dointvec, |
f20786ff PZ |
507 | }, |
508 | #endif | |
509 | #ifdef CONFIG_LOCK_STAT | |
510 | { | |
f20786ff PZ |
511 | .procname = "lock_stat", |
512 | .data = &lock_stat, | |
513 | .maxlen = sizeof(int), | |
514 | .mode = 0644, | |
6d456111 | 515 | .proc_handler = proc_dointvec, |
f20786ff | 516 | }, |
77e54a1f | 517 | #endif |
1da177e4 | 518 | { |
1da177e4 LT |
519 | .procname = "panic", |
520 | .data = &panic_timeout, | |
521 | .maxlen = sizeof(int), | |
522 | .mode = 0644, | |
6d456111 | 523 | .proc_handler = proc_dointvec, |
1da177e4 | 524 | }, |
046d662f | 525 | #ifdef CONFIG_COREDUMP |
1da177e4 | 526 | { |
1da177e4 LT |
527 | .procname = "core_uses_pid", |
528 | .data = &core_uses_pid, | |
529 | .maxlen = sizeof(int), | |
530 | .mode = 0644, | |
6d456111 | 531 | .proc_handler = proc_dointvec, |
1da177e4 LT |
532 | }, |
533 | { | |
1da177e4 LT |
534 | .procname = "core_pattern", |
535 | .data = core_pattern, | |
71ce92f3 | 536 | .maxlen = CORENAME_MAX_SIZE, |
1da177e4 | 537 | .mode = 0644, |
54b50199 | 538 | .proc_handler = proc_dostring_coredump, |
1da177e4 | 539 | }, |
a293980c | 540 | { |
a293980c NH |
541 | .procname = "core_pipe_limit", |
542 | .data = &core_pipe_limit, | |
543 | .maxlen = sizeof(unsigned int), | |
544 | .mode = 0644, | |
6d456111 | 545 | .proc_handler = proc_dointvec, |
a293980c | 546 | }, |
046d662f | 547 | #endif |
34f5a398 | 548 | #ifdef CONFIG_PROC_SYSCTL |
1da177e4 | 549 | { |
1da177e4 | 550 | .procname = "tainted", |
25ddbb18 | 551 | .maxlen = sizeof(long), |
34f5a398 | 552 | .mode = 0644, |
6d456111 | 553 | .proc_handler = proc_taint, |
1da177e4 | 554 | }, |
f4aacea2 KC |
555 | { |
556 | .procname = "sysctl_writes_strict", | |
557 | .data = &sysctl_writes_strict, | |
558 | .maxlen = sizeof(int), | |
559 | .mode = 0644, | |
560 | .proc_handler = proc_dointvec_minmax, | |
561 | .extra1 = &neg_one, | |
eec4844f | 562 | .extra2 = SYSCTL_ONE, |
f4aacea2 | 563 | }, |
34f5a398 | 564 | #endif |
9745512c AV |
565 | #ifdef CONFIG_LATENCYTOP |
566 | { | |
567 | .procname = "latencytop", | |
568 | .data = &latencytop_enabled, | |
569 | .maxlen = sizeof(int), | |
570 | .mode = 0644, | |
cb251765 | 571 | .proc_handler = sysctl_latencytop, |
9745512c AV |
572 | }, |
573 | #endif | |
1da177e4 LT |
574 | #ifdef CONFIG_BLK_DEV_INITRD |
575 | { | |
1da177e4 LT |
576 | .procname = "real-root-dev", |
577 | .data = &real_root_dev, | |
578 | .maxlen = sizeof(int), | |
579 | .mode = 0644, | |
6d456111 | 580 | .proc_handler = proc_dointvec, |
1da177e4 LT |
581 | }, |
582 | #endif | |
45807a1d | 583 | { |
45807a1d IM |
584 | .procname = "print-fatal-signals", |
585 | .data = &print_fatal_signals, | |
586 | .maxlen = sizeof(int), | |
587 | .mode = 0644, | |
6d456111 | 588 | .proc_handler = proc_dointvec, |
45807a1d | 589 | }, |
72c57ed5 | 590 | #ifdef CONFIG_SPARC |
1da177e4 | 591 | { |
1da177e4 LT |
592 | .procname = "reboot-cmd", |
593 | .data = reboot_command, | |
594 | .maxlen = 256, | |
595 | .mode = 0644, | |
6d456111 | 596 | .proc_handler = proc_dostring, |
1da177e4 LT |
597 | }, |
598 | { | |
1da177e4 LT |
599 | .procname = "stop-a", |
600 | .data = &stop_a_enabled, | |
601 | .maxlen = sizeof (int), | |
602 | .mode = 0644, | |
6d456111 | 603 | .proc_handler = proc_dointvec, |
1da177e4 LT |
604 | }, |
605 | { | |
1da177e4 LT |
606 | .procname = "scons-poweroff", |
607 | .data = &scons_pwroff, | |
608 | .maxlen = sizeof (int), | |
609 | .mode = 0644, | |
6d456111 | 610 | .proc_handler = proc_dointvec, |
1da177e4 LT |
611 | }, |
612 | #endif | |
0871420f DM |
613 | #ifdef CONFIG_SPARC64 |
614 | { | |
0871420f DM |
615 | .procname = "tsb-ratio", |
616 | .data = &sysctl_tsb_ratio, | |
617 | .maxlen = sizeof (int), | |
618 | .mode = 0644, | |
6d456111 | 619 | .proc_handler = proc_dointvec, |
0871420f DM |
620 | }, |
621 | #endif | |
1da177e4 LT |
622 | #ifdef __hppa__ |
623 | { | |
1da177e4 LT |
624 | .procname = "soft-power", |
625 | .data = &pwrsw_enabled, | |
626 | .maxlen = sizeof (int), | |
627 | .mode = 0644, | |
6d456111 | 628 | .proc_handler = proc_dointvec, |
1da177e4 | 629 | }, |
bf14e3b9 VG |
630 | #endif |
631 | #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW | |
1da177e4 | 632 | { |
1da177e4 LT |
633 | .procname = "unaligned-trap", |
634 | .data = &unaligned_enabled, | |
635 | .maxlen = sizeof (int), | |
636 | .mode = 0644, | |
6d456111 | 637 | .proc_handler = proc_dointvec, |
1da177e4 LT |
638 | }, |
639 | #endif | |
640 | { | |
1da177e4 LT |
641 | .procname = "ctrl-alt-del", |
642 | .data = &C_A_D, | |
643 | .maxlen = sizeof(int), | |
644 | .mode = 0644, | |
6d456111 | 645 | .proc_handler = proc_dointvec, |
1da177e4 | 646 | }, |
606576ce | 647 | #ifdef CONFIG_FUNCTION_TRACER |
b0fc494f | 648 | { |
b0fc494f SR |
649 | .procname = "ftrace_enabled", |
650 | .data = &ftrace_enabled, | |
651 | .maxlen = sizeof(int), | |
652 | .mode = 0644, | |
6d456111 | 653 | .proc_handler = ftrace_enable_sysctl, |
b0fc494f SR |
654 | }, |
655 | #endif | |
f38f1d2a SR |
656 | #ifdef CONFIG_STACK_TRACER |
657 | { | |
f38f1d2a SR |
658 | .procname = "stack_tracer_enabled", |
659 | .data = &stack_tracer_enabled, | |
660 | .maxlen = sizeof(int), | |
661 | .mode = 0644, | |
6d456111 | 662 | .proc_handler = stack_trace_sysctl, |
f38f1d2a SR |
663 | }, |
664 | #endif | |
944ac425 SR |
665 | #ifdef CONFIG_TRACING |
666 | { | |
3299b4dd | 667 | .procname = "ftrace_dump_on_oops", |
944ac425 SR |
668 | .data = &ftrace_dump_on_oops, |
669 | .maxlen = sizeof(int), | |
670 | .mode = 0644, | |
6d456111 | 671 | .proc_handler = proc_dointvec, |
944ac425 | 672 | }, |
de7edd31 SRRH |
673 | { |
674 | .procname = "traceoff_on_warning", | |
675 | .data = &__disable_trace_on_warning, | |
676 | .maxlen = sizeof(__disable_trace_on_warning), | |
677 | .mode = 0644, | |
678 | .proc_handler = proc_dointvec, | |
679 | }, | |
0daa2302 SRRH |
680 | { |
681 | .procname = "tracepoint_printk", | |
682 | .data = &tracepoint_printk, | |
683 | .maxlen = sizeof(tracepoint_printk), | |
684 | .mode = 0644, | |
42391745 | 685 | .proc_handler = tracepoint_printk_sysctl, |
0daa2302 | 686 | }, |
944ac425 | 687 | #endif |
2965faa5 | 688 | #ifdef CONFIG_KEXEC_CORE |
7984754b KC |
689 | { |
690 | .procname = "kexec_load_disabled", | |
691 | .data = &kexec_load_disabled, | |
692 | .maxlen = sizeof(int), | |
693 | .mode = 0644, | |
694 | /* only handle a transition from default "0" to "1" */ | |
695 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
696 | .extra1 = SYSCTL_ONE, |
697 | .extra2 = SYSCTL_ONE, | |
7984754b KC |
698 | }, |
699 | #endif | |
a1ef5adb | 700 | #ifdef CONFIG_MODULES |
1da177e4 | 701 | { |
1da177e4 LT |
702 | .procname = "modprobe", |
703 | .data = &modprobe_path, | |
704 | .maxlen = KMOD_PATH_LEN, | |
705 | .mode = 0644, | |
6d456111 | 706 | .proc_handler = proc_dostring, |
1da177e4 | 707 | }, |
3d43321b | 708 | { |
3d43321b KC |
709 | .procname = "modules_disabled", |
710 | .data = &modules_disabled, | |
711 | .maxlen = sizeof(int), | |
712 | .mode = 0644, | |
713 | /* only handle a transition from default "0" to "1" */ | |
6d456111 | 714 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
715 | .extra1 = SYSCTL_ONE, |
716 | .extra2 = SYSCTL_ONE, | |
3d43321b | 717 | }, |
1da177e4 | 718 | #endif |
86d56134 | 719 | #ifdef CONFIG_UEVENT_HELPER |
1da177e4 | 720 | { |
1da177e4 | 721 | .procname = "hotplug", |
312c004d KS |
722 | .data = &uevent_helper, |
723 | .maxlen = UEVENT_HELPER_PATH_LEN, | |
1da177e4 | 724 | .mode = 0644, |
6d456111 | 725 | .proc_handler = proc_dostring, |
1da177e4 | 726 | }, |
86d56134 | 727 | #endif |
1da177e4 LT |
728 | #ifdef CONFIG_CHR_DEV_SG |
729 | { | |
1da177e4 LT |
730 | .procname = "sg-big-buff", |
731 | .data = &sg_big_buff, | |
732 | .maxlen = sizeof (int), | |
733 | .mode = 0444, | |
6d456111 | 734 | .proc_handler = proc_dointvec, |
1da177e4 LT |
735 | }, |
736 | #endif | |
737 | #ifdef CONFIG_BSD_PROCESS_ACCT | |
738 | { | |
1da177e4 LT |
739 | .procname = "acct", |
740 | .data = &acct_parm, | |
741 | .maxlen = 3*sizeof(int), | |
742 | .mode = 0644, | |
6d456111 | 743 | .proc_handler = proc_dointvec, |
1da177e4 LT |
744 | }, |
745 | #endif | |
1da177e4 LT |
746 | #ifdef CONFIG_MAGIC_SYSRQ |
747 | { | |
1da177e4 | 748 | .procname = "sysrq", |
5d6f647f | 749 | .data = &__sysrq_enabled, |
1da177e4 LT |
750 | .maxlen = sizeof (int), |
751 | .mode = 0644, | |
97f5f0cd | 752 | .proc_handler = sysrq_sysctl_handler, |
1da177e4 LT |
753 | }, |
754 | #endif | |
d6f8ff73 | 755 | #ifdef CONFIG_PROC_SYSCTL |
1da177e4 | 756 | { |
1da177e4 | 757 | .procname = "cad_pid", |
9ec52099 | 758 | .data = NULL, |
1da177e4 LT |
759 | .maxlen = sizeof (int), |
760 | .mode = 0600, | |
6d456111 | 761 | .proc_handler = proc_do_cad_pid, |
1da177e4 | 762 | }, |
d6f8ff73 | 763 | #endif |
1da177e4 | 764 | { |
1da177e4 | 765 | .procname = "threads-max", |
16db3d3f | 766 | .data = NULL, |
1da177e4 LT |
767 | .maxlen = sizeof(int), |
768 | .mode = 0644, | |
16db3d3f | 769 | .proc_handler = sysctl_max_threads, |
1da177e4 LT |
770 | }, |
771 | { | |
1da177e4 LT |
772 | .procname = "random", |
773 | .mode = 0555, | |
774 | .child = random_table, | |
775 | }, | |
17f60a7d EP |
776 | { |
777 | .procname = "usermodehelper", | |
778 | .mode = 0555, | |
779 | .child = usermodehelper_table, | |
780 | }, | |
ceb18132 LR |
781 | #ifdef CONFIG_FW_LOADER_USER_HELPER |
782 | { | |
783 | .procname = "firmware_config", | |
784 | .mode = 0555, | |
785 | .child = firmware_config_table, | |
786 | }, | |
787 | #endif | |
1da177e4 | 788 | { |
1da177e4 LT |
789 | .procname = "overflowuid", |
790 | .data = &overflowuid, | |
791 | .maxlen = sizeof(int), | |
792 | .mode = 0644, | |
6d456111 | 793 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
794 | .extra1 = &minolduid, |
795 | .extra2 = &maxolduid, | |
796 | }, | |
797 | { | |
1da177e4 LT |
798 | .procname = "overflowgid", |
799 | .data = &overflowgid, | |
800 | .maxlen = sizeof(int), | |
801 | .mode = 0644, | |
6d456111 | 802 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
803 | .extra1 = &minolduid, |
804 | .extra2 = &maxolduid, | |
805 | }, | |
347a8dc3 | 806 | #ifdef CONFIG_S390 |
1da177e4 LT |
807 | #ifdef CONFIG_MATHEMU |
808 | { | |
1da177e4 LT |
809 | .procname = "ieee_emulation_warnings", |
810 | .data = &sysctl_ieee_emulation_warnings, | |
811 | .maxlen = sizeof(int), | |
812 | .mode = 0644, | |
6d456111 | 813 | .proc_handler = proc_dointvec, |
1da177e4 | 814 | }, |
1da177e4 LT |
815 | #endif |
816 | { | |
1da177e4 | 817 | .procname = "userprocess_debug", |
ab3c68ee | 818 | .data = &show_unhandled_signals, |
1da177e4 LT |
819 | .maxlen = sizeof(int), |
820 | .mode = 0644, | |
6d456111 | 821 | .proc_handler = proc_dointvec, |
1da177e4 LT |
822 | }, |
823 | #endif | |
824 | { | |
1da177e4 LT |
825 | .procname = "pid_max", |
826 | .data = &pid_max, | |
827 | .maxlen = sizeof (int), | |
828 | .mode = 0644, | |
6d456111 | 829 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
830 | .extra1 = &pid_max_min, |
831 | .extra2 = &pid_max_max, | |
832 | }, | |
833 | { | |
1da177e4 LT |
834 | .procname = "panic_on_oops", |
835 | .data = &panic_on_oops, | |
836 | .maxlen = sizeof(int), | |
837 | .mode = 0644, | |
6d456111 | 838 | .proc_handler = proc_dointvec, |
1da177e4 | 839 | }, |
81c9d43f FT |
840 | { |
841 | .procname = "panic_print", | |
842 | .data = &panic_print, | |
843 | .maxlen = sizeof(unsigned long), | |
844 | .mode = 0644, | |
845 | .proc_handler = proc_doulongvec_minmax, | |
846 | }, | |
7ef3d2fd JP |
847 | #if defined CONFIG_PRINTK |
848 | { | |
7ef3d2fd JP |
849 | .procname = "printk", |
850 | .data = &console_loglevel, | |
851 | .maxlen = 4*sizeof(int), | |
852 | .mode = 0644, | |
6d456111 | 853 | .proc_handler = proc_dointvec, |
7ef3d2fd | 854 | }, |
1da177e4 | 855 | { |
1da177e4 | 856 | .procname = "printk_ratelimit", |
717115e1 | 857 | .data = &printk_ratelimit_state.interval, |
1da177e4 LT |
858 | .maxlen = sizeof(int), |
859 | .mode = 0644, | |
6d456111 | 860 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
861 | }, |
862 | { | |
1da177e4 | 863 | .procname = "printk_ratelimit_burst", |
717115e1 | 864 | .data = &printk_ratelimit_state.burst, |
1da177e4 LT |
865 | .maxlen = sizeof(int), |
866 | .mode = 0644, | |
6d456111 | 867 | .proc_handler = proc_dointvec, |
1da177e4 | 868 | }, |
af91322e | 869 | { |
af91322e DY |
870 | .procname = "printk_delay", |
871 | .data = &printk_delay_msec, | |
872 | .maxlen = sizeof(int), | |
873 | .mode = 0644, | |
6d456111 | 874 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 875 | .extra1 = SYSCTL_ZERO, |
af91322e DY |
876 | .extra2 = &ten_thousand, |
877 | }, | |
750afe7b BP |
878 | { |
879 | .procname = "printk_devkmsg", | |
880 | .data = devkmsg_log_str, | |
881 | .maxlen = DEVKMSG_STR_MAX_SIZE, | |
882 | .mode = 0644, | |
883 | .proc_handler = devkmsg_sysctl_set_loglvl, | |
884 | }, | |
eaf06b24 DR |
885 | { |
886 | .procname = "dmesg_restrict", | |
887 | .data = &dmesg_restrict, | |
888 | .maxlen = sizeof(int), | |
889 | .mode = 0644, | |
620f6e8e | 890 | .proc_handler = proc_dointvec_minmax_sysadmin, |
eec4844f MC |
891 | .extra1 = SYSCTL_ZERO, |
892 | .extra2 = SYSCTL_ONE, | |
eaf06b24 | 893 | }, |
455cd5ab DR |
894 | { |
895 | .procname = "kptr_restrict", | |
896 | .data = &kptr_restrict, | |
897 | .maxlen = sizeof(int), | |
898 | .mode = 0644, | |
620f6e8e | 899 | .proc_handler = proc_dointvec_minmax_sysadmin, |
eec4844f | 900 | .extra1 = SYSCTL_ZERO, |
455cd5ab DR |
901 | .extra2 = &two, |
902 | }, | |
df6e61d4 | 903 | #endif |
1da177e4 | 904 | { |
1da177e4 LT |
905 | .procname = "ngroups_max", |
906 | .data = &ngroups_max, | |
907 | .maxlen = sizeof (int), | |
908 | .mode = 0444, | |
6d456111 | 909 | .proc_handler = proc_dointvec, |
1da177e4 | 910 | }, |
73efc039 DB |
911 | { |
912 | .procname = "cap_last_cap", | |
913 | .data = (void *)&cap_last_cap, | |
914 | .maxlen = sizeof(int), | |
915 | .mode = 0444, | |
916 | .proc_handler = proc_dointvec, | |
917 | }, | |
58687acb | 918 | #if defined(CONFIG_LOCKUP_DETECTOR) |
504d7cf1 | 919 | { |
58687acb | 920 | .procname = "watchdog", |
7feeb9cd TG |
921 | .data = &watchdog_user_enabled, |
922 | .maxlen = sizeof(int), | |
923 | .mode = 0644, | |
195daf66 | 924 | .proc_handler = proc_watchdog, |
eec4844f MC |
925 | .extra1 = SYSCTL_ZERO, |
926 | .extra2 = SYSCTL_ONE, | |
58687acb DZ |
927 | }, |
928 | { | |
929 | .procname = "watchdog_thresh", | |
586692a5 | 930 | .data = &watchdog_thresh, |
58687acb DZ |
931 | .maxlen = sizeof(int), |
932 | .mode = 0644, | |
195daf66 | 933 | .proc_handler = proc_watchdog_thresh, |
eec4844f | 934 | .extra1 = SYSCTL_ZERO, |
58687acb | 935 | .extra2 = &sixty, |
504d7cf1 | 936 | }, |
195daf66 UO |
937 | { |
938 | .procname = "nmi_watchdog", | |
7feeb9cd TG |
939 | .data = &nmi_watchdog_user_enabled, |
940 | .maxlen = sizeof(int), | |
51d4052b | 941 | .mode = NMI_WATCHDOG_SYSCTL_PERM, |
195daf66 | 942 | .proc_handler = proc_nmi_watchdog, |
eec4844f MC |
943 | .extra1 = SYSCTL_ZERO, |
944 | .extra2 = SYSCTL_ONE, | |
195daf66 | 945 | }, |
05a4a952 NP |
946 | { |
947 | .procname = "watchdog_cpumask", | |
948 | .data = &watchdog_cpumask_bits, | |
949 | .maxlen = NR_CPUS, | |
950 | .mode = 0644, | |
951 | .proc_handler = proc_watchdog_cpumask, | |
952 | }, | |
953 | #ifdef CONFIG_SOFTLOCKUP_DETECTOR | |
195daf66 UO |
954 | { |
955 | .procname = "soft_watchdog", | |
7feeb9cd TG |
956 | .data = &soft_watchdog_user_enabled, |
957 | .maxlen = sizeof(int), | |
958 | .mode = 0644, | |
195daf66 | 959 | .proc_handler = proc_soft_watchdog, |
eec4844f MC |
960 | .extra1 = SYSCTL_ZERO, |
961 | .extra2 = SYSCTL_ONE, | |
195daf66 | 962 | }, |
2508ce18 DZ |
963 | { |
964 | .procname = "softlockup_panic", | |
965 | .data = &softlockup_panic, | |
966 | .maxlen = sizeof(int), | |
967 | .mode = 0644, | |
968 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
969 | .extra1 = SYSCTL_ZERO, |
970 | .extra2 = SYSCTL_ONE, | |
2508ce18 | 971 | }, |
05a4a952 | 972 | #ifdef CONFIG_SMP |
ac1f5912 | 973 | { |
05a4a952 NP |
974 | .procname = "softlockup_all_cpu_backtrace", |
975 | .data = &sysctl_softlockup_all_cpu_backtrace, | |
ac1f5912 DZ |
976 | .maxlen = sizeof(int), |
977 | .mode = 0644, | |
978 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
979 | .extra1 = SYSCTL_ZERO, |
980 | .extra2 = SYSCTL_ONE, | |
ac1f5912 | 981 | }, |
05a4a952 | 982 | #endif /* CONFIG_SMP */ |
ac1f5912 | 983 | #endif |
05a4a952 | 984 | #ifdef CONFIG_HARDLOCKUP_DETECTOR |
ed235875 | 985 | { |
05a4a952 NP |
986 | .procname = "hardlockup_panic", |
987 | .data = &hardlockup_panic, | |
ed235875 AT |
988 | .maxlen = sizeof(int), |
989 | .mode = 0644, | |
990 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
991 | .extra1 = SYSCTL_ZERO, |
992 | .extra2 = SYSCTL_ONE, | |
ed235875 | 993 | }, |
05a4a952 | 994 | #ifdef CONFIG_SMP |
55537871 JK |
995 | { |
996 | .procname = "hardlockup_all_cpu_backtrace", | |
997 | .data = &sysctl_hardlockup_all_cpu_backtrace, | |
998 | .maxlen = sizeof(int), | |
999 | .mode = 0644, | |
1000 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1001 | .extra1 = SYSCTL_ZERO, |
1002 | .extra2 = SYSCTL_ONE, | |
55537871 | 1003 | }, |
ed235875 | 1004 | #endif /* CONFIG_SMP */ |
5dc30558 | 1005 | #endif |
05a4a952 NP |
1006 | #endif |
1007 | ||
5dc30558 DZ |
1008 | #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86) |
1009 | { | |
1010 | .procname = "unknown_nmi_panic", | |
1011 | .data = &unknown_nmi_panic, | |
1012 | .maxlen = sizeof (int), | |
1013 | .mode = 0644, | |
1014 | .proc_handler = proc_dointvec, | |
1015 | }, | |
504d7cf1 | 1016 | #endif |
1da177e4 | 1017 | #if defined(CONFIG_X86) |
8da5adda | 1018 | { |
8da5adda DZ |
1019 | .procname = "panic_on_unrecovered_nmi", |
1020 | .data = &panic_on_unrecovered_nmi, | |
1021 | .maxlen = sizeof(int), | |
1022 | .mode = 0644, | |
6d456111 | 1023 | .proc_handler = proc_dointvec, |
8da5adda | 1024 | }, |
5211a242 | 1025 | { |
5211a242 KG |
1026 | .procname = "panic_on_io_nmi", |
1027 | .data = &panic_on_io_nmi, | |
1028 | .maxlen = sizeof(int), | |
1029 | .mode = 0644, | |
6d456111 | 1030 | .proc_handler = proc_dointvec, |
5211a242 | 1031 | }, |
55af7796 MH |
1032 | #ifdef CONFIG_DEBUG_STACKOVERFLOW |
1033 | { | |
1034 | .procname = "panic_on_stackoverflow", | |
1035 | .data = &sysctl_panic_on_stackoverflow, | |
1036 | .maxlen = sizeof(int), | |
1037 | .mode = 0644, | |
1038 | .proc_handler = proc_dointvec, | |
1039 | }, | |
1040 | #endif | |
1da177e4 | 1041 | { |
1da177e4 LT |
1042 | .procname = "bootloader_type", |
1043 | .data = &bootloader_type, | |
1044 | .maxlen = sizeof (int), | |
1045 | .mode = 0444, | |
6d456111 | 1046 | .proc_handler = proc_dointvec, |
1da177e4 | 1047 | }, |
5031296c | 1048 | { |
5031296c PA |
1049 | .procname = "bootloader_version", |
1050 | .data = &bootloader_version, | |
1051 | .maxlen = sizeof (int), | |
1052 | .mode = 0444, | |
6d456111 | 1053 | .proc_handler = proc_dointvec, |
5031296c | 1054 | }, |
6e7c4025 | 1055 | { |
6e7c4025 IM |
1056 | .procname = "io_delay_type", |
1057 | .data = &io_delay_type, | |
1058 | .maxlen = sizeof(int), | |
1059 | .mode = 0644, | |
6d456111 | 1060 | .proc_handler = proc_dointvec, |
6e7c4025 | 1061 | }, |
1da177e4 | 1062 | #endif |
7a9166e3 | 1063 | #if defined(CONFIG_MMU) |
1da177e4 | 1064 | { |
1da177e4 LT |
1065 | .procname = "randomize_va_space", |
1066 | .data = &randomize_va_space, | |
1067 | .maxlen = sizeof(int), | |
1068 | .mode = 0644, | |
6d456111 | 1069 | .proc_handler = proc_dointvec, |
1da177e4 | 1070 | }, |
7a9166e3 | 1071 | #endif |
0152fb37 | 1072 | #if defined(CONFIG_S390) && defined(CONFIG_SMP) |
951f22d5 | 1073 | { |
951f22d5 MS |
1074 | .procname = "spin_retry", |
1075 | .data = &spin_retry, | |
1076 | .maxlen = sizeof (int), | |
1077 | .mode = 0644, | |
6d456111 | 1078 | .proc_handler = proc_dointvec, |
951f22d5 | 1079 | }, |
c255d844 | 1080 | #endif |
673d5b43 | 1081 | #if defined(CONFIG_ACPI_SLEEP) && defined(CONFIG_X86) |
c255d844 | 1082 | { |
c255d844 | 1083 | .procname = "acpi_video_flags", |
77afcf78 | 1084 | .data = &acpi_realmode_flags, |
c255d844 PM |
1085 | .maxlen = sizeof (unsigned long), |
1086 | .mode = 0644, | |
6d456111 | 1087 | .proc_handler = proc_doulongvec_minmax, |
c255d844 | 1088 | }, |
d2b176ed | 1089 | #endif |
b6fca725 | 1090 | #ifdef CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN |
d2b176ed | 1091 | { |
d2b176ed JS |
1092 | .procname = "ignore-unaligned-usertrap", |
1093 | .data = &no_unaligned_warning, | |
1094 | .maxlen = sizeof (int), | |
1095 | .mode = 0644, | |
6d456111 | 1096 | .proc_handler = proc_dointvec, |
d2b176ed | 1097 | }, |
b6fca725 VG |
1098 | #endif |
1099 | #ifdef CONFIG_IA64 | |
88fc241f | 1100 | { |
88fc241f DC |
1101 | .procname = "unaligned-dump-stack", |
1102 | .data = &unaligned_dump_stack, | |
1103 | .maxlen = sizeof (int), | |
1104 | .mode = 0644, | |
6d456111 | 1105 | .proc_handler = proc_dointvec, |
88fc241f | 1106 | }, |
bebfa101 | 1107 | #endif |
e162b39a MSB |
1108 | #ifdef CONFIG_DETECT_HUNG_TASK |
1109 | { | |
e162b39a MSB |
1110 | .procname = "hung_task_panic", |
1111 | .data = &sysctl_hung_task_panic, | |
1112 | .maxlen = sizeof(int), | |
1113 | .mode = 0644, | |
6d456111 | 1114 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
1115 | .extra1 = SYSCTL_ZERO, |
1116 | .extra2 = SYSCTL_ONE, | |
e162b39a | 1117 | }, |
82a1fcb9 | 1118 | { |
82a1fcb9 IM |
1119 | .procname = "hung_task_check_count", |
1120 | .data = &sysctl_hung_task_check_count, | |
cd64647f | 1121 | .maxlen = sizeof(int), |
82a1fcb9 | 1122 | .mode = 0644, |
cd64647f | 1123 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1124 | .extra1 = SYSCTL_ZERO, |
82a1fcb9 IM |
1125 | }, |
1126 | { | |
82a1fcb9 IM |
1127 | .procname = "hung_task_timeout_secs", |
1128 | .data = &sysctl_hung_task_timeout_secs, | |
90739081 | 1129 | .maxlen = sizeof(unsigned long), |
82a1fcb9 | 1130 | .mode = 0644, |
6d456111 | 1131 | .proc_handler = proc_dohung_task_timeout_secs, |
80df2847 | 1132 | .extra2 = &hung_task_timeout_max, |
82a1fcb9 | 1133 | }, |
a2e51445 DV |
1134 | { |
1135 | .procname = "hung_task_check_interval_secs", | |
1136 | .data = &sysctl_hung_task_check_interval_secs, | |
1137 | .maxlen = sizeof(unsigned long), | |
1138 | .mode = 0644, | |
1139 | .proc_handler = proc_dohung_task_timeout_secs, | |
1140 | .extra2 = &hung_task_timeout_max, | |
1141 | }, | |
82a1fcb9 | 1142 | { |
82a1fcb9 IM |
1143 | .procname = "hung_task_warnings", |
1144 | .data = &sysctl_hung_task_warnings, | |
270750db | 1145 | .maxlen = sizeof(int), |
82a1fcb9 | 1146 | .mode = 0644, |
270750db AT |
1147 | .proc_handler = proc_dointvec_minmax, |
1148 | .extra1 = &neg_one, | |
82a1fcb9 | 1149 | }, |
c4f3b63f | 1150 | #endif |
23f78d4a IM |
1151 | #ifdef CONFIG_RT_MUTEXES |
1152 | { | |
23f78d4a IM |
1153 | .procname = "max_lock_depth", |
1154 | .data = &max_lock_depth, | |
1155 | .maxlen = sizeof(int), | |
1156 | .mode = 0644, | |
6d456111 | 1157 | .proc_handler = proc_dointvec, |
23f78d4a | 1158 | }, |
5096add8 | 1159 | #endif |
10a0a8d4 | 1160 | { |
10a0a8d4 JF |
1161 | .procname = "poweroff_cmd", |
1162 | .data = &poweroff_cmd, | |
1163 | .maxlen = POWEROFF_CMD_PATH_LEN, | |
1164 | .mode = 0644, | |
6d456111 | 1165 | .proc_handler = proc_dostring, |
10a0a8d4 | 1166 | }, |
0b77f5bf DH |
1167 | #ifdef CONFIG_KEYS |
1168 | { | |
0b77f5bf DH |
1169 | .procname = "keys", |
1170 | .mode = 0555, | |
1171 | .child = key_sysctls, | |
1172 | }, | |
1173 | #endif | |
cdd6c482 | 1174 | #ifdef CONFIG_PERF_EVENTS |
aa4a2218 VW |
1175 | /* |
1176 | * User-space scripts rely on the existence of this file | |
1177 | * as a feature check for perf_events being enabled. | |
1178 | * | |
1179 | * So it's an ABI, do not remove! | |
1180 | */ | |
1ccd1549 | 1181 | { |
cdd6c482 IM |
1182 | .procname = "perf_event_paranoid", |
1183 | .data = &sysctl_perf_event_paranoid, | |
1184 | .maxlen = sizeof(sysctl_perf_event_paranoid), | |
1ccd1549 | 1185 | .mode = 0644, |
6d456111 | 1186 | .proc_handler = proc_dointvec, |
1ccd1549 | 1187 | }, |
c5078f78 | 1188 | { |
cdd6c482 IM |
1189 | .procname = "perf_event_mlock_kb", |
1190 | .data = &sysctl_perf_event_mlock, | |
1191 | .maxlen = sizeof(sysctl_perf_event_mlock), | |
c5078f78 | 1192 | .mode = 0644, |
6d456111 | 1193 | .proc_handler = proc_dointvec, |
c5078f78 | 1194 | }, |
a78ac325 | 1195 | { |
cdd6c482 IM |
1196 | .procname = "perf_event_max_sample_rate", |
1197 | .data = &sysctl_perf_event_sample_rate, | |
1198 | .maxlen = sizeof(sysctl_perf_event_sample_rate), | |
a78ac325 | 1199 | .mode = 0644, |
163ec435 | 1200 | .proc_handler = perf_proc_update_handler, |
eec4844f | 1201 | .extra1 = SYSCTL_ONE, |
a78ac325 | 1202 | }, |
14c63f17 DH |
1203 | { |
1204 | .procname = "perf_cpu_time_max_percent", | |
1205 | .data = &sysctl_perf_cpu_time_max_percent, | |
1206 | .maxlen = sizeof(sysctl_perf_cpu_time_max_percent), | |
1207 | .mode = 0644, | |
1208 | .proc_handler = perf_cpu_time_max_percent_handler, | |
eec4844f | 1209 | .extra1 = SYSCTL_ZERO, |
14c63f17 DH |
1210 | .extra2 = &one_hundred, |
1211 | }, | |
c5dfd78e ACM |
1212 | { |
1213 | .procname = "perf_event_max_stack", | |
a831100a | 1214 | .data = &sysctl_perf_event_max_stack, |
c5dfd78e ACM |
1215 | .maxlen = sizeof(sysctl_perf_event_max_stack), |
1216 | .mode = 0644, | |
1217 | .proc_handler = perf_event_max_stack_handler, | |
eec4844f | 1218 | .extra1 = SYSCTL_ZERO, |
c5dfd78e ACM |
1219 | .extra2 = &six_hundred_forty_kb, |
1220 | }, | |
c85b0334 ACM |
1221 | { |
1222 | .procname = "perf_event_max_contexts_per_stack", | |
1223 | .data = &sysctl_perf_event_max_contexts_per_stack, | |
1224 | .maxlen = sizeof(sysctl_perf_event_max_contexts_per_stack), | |
1225 | .mode = 0644, | |
1226 | .proc_handler = perf_event_max_stack_handler, | |
eec4844f | 1227 | .extra1 = SYSCTL_ZERO, |
c85b0334 ACM |
1228 | .extra2 = &one_thousand, |
1229 | }, | |
cb684b5b | 1230 | #endif |
9e3961a0 PB |
1231 | { |
1232 | .procname = "panic_on_warn", | |
1233 | .data = &panic_on_warn, | |
1234 | .maxlen = sizeof(int), | |
1235 | .mode = 0644, | |
1236 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1237 | .extra1 = SYSCTL_ZERO, |
1238 | .extra2 = SYSCTL_ONE, | |
9e3961a0 | 1239 | }, |
bc7a34b8 TG |
1240 | #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON) |
1241 | { | |
1242 | .procname = "timer_migration", | |
1243 | .data = &sysctl_timer_migration, | |
1244 | .maxlen = sizeof(unsigned int), | |
1245 | .mode = 0644, | |
1246 | .proc_handler = timer_migration_handler, | |
eec4844f MC |
1247 | .extra1 = SYSCTL_ZERO, |
1248 | .extra2 = SYSCTL_ONE, | |
bc7a34b8 | 1249 | }, |
1be7f75d AS |
1250 | #endif |
1251 | #ifdef CONFIG_BPF_SYSCALL | |
1252 | { | |
1253 | .procname = "unprivileged_bpf_disabled", | |
1254 | .data = &sysctl_unprivileged_bpf_disabled, | |
1255 | .maxlen = sizeof(sysctl_unprivileged_bpf_disabled), | |
1256 | .mode = 0644, | |
1257 | /* only handle a transition from default "0" to "1" */ | |
1258 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1259 | .extra1 = SYSCTL_ONE, |
1260 | .extra2 = SYSCTL_ONE, | |
1be7f75d | 1261 | }, |
492ecee8 AS |
1262 | { |
1263 | .procname = "bpf_stats_enabled", | |
a8e11e5c ED |
1264 | .data = &bpf_stats_enabled_key.key, |
1265 | .maxlen = sizeof(bpf_stats_enabled_key), | |
492ecee8 | 1266 | .mode = 0644, |
a8e11e5c | 1267 | .proc_handler = proc_do_static_key, |
492ecee8 | 1268 | }, |
3fcc5530 | 1269 | #endif |
088e9d25 DBO |
1270 | #if defined(CONFIG_TREE_RCU) || defined(CONFIG_PREEMPT_RCU) |
1271 | { | |
1272 | .procname = "panic_on_rcu_stall", | |
1273 | .data = &sysctl_panic_on_rcu_stall, | |
1274 | .maxlen = sizeof(sysctl_panic_on_rcu_stall), | |
1275 | .mode = 0644, | |
1276 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1277 | .extra1 = SYSCTL_ZERO, |
1278 | .extra2 = SYSCTL_ONE, | |
088e9d25 | 1279 | }, |
964c9dff AP |
1280 | #endif |
1281 | #ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE | |
1282 | { | |
1283 | .procname = "stack_erasing", | |
1284 | .data = NULL, | |
1285 | .maxlen = sizeof(int), | |
1286 | .mode = 0600, | |
1287 | .proc_handler = stack_erasing_sysctl, | |
eec4844f MC |
1288 | .extra1 = SYSCTL_ZERO, |
1289 | .extra2 = SYSCTL_ONE, | |
964c9dff | 1290 | }, |
bc7a34b8 | 1291 | #endif |
6fce56ec | 1292 | { } |
1da177e4 LT |
1293 | }; |
1294 | ||
d8217f07 | 1295 | static struct ctl_table vm_table[] = { |
1da177e4 | 1296 | { |
1da177e4 LT |
1297 | .procname = "overcommit_memory", |
1298 | .data = &sysctl_overcommit_memory, | |
1299 | .maxlen = sizeof(sysctl_overcommit_memory), | |
1300 | .mode = 0644, | |
cb16e95f | 1301 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1302 | .extra1 = SYSCTL_ZERO, |
cb16e95f | 1303 | .extra2 = &two, |
1da177e4 | 1304 | }, |
fadd8fbd | 1305 | { |
fadd8fbd KH |
1306 | .procname = "panic_on_oom", |
1307 | .data = &sysctl_panic_on_oom, | |
1308 | .maxlen = sizeof(sysctl_panic_on_oom), | |
1309 | .mode = 0644, | |
cb16e95f | 1310 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1311 | .extra1 = SYSCTL_ZERO, |
cb16e95f | 1312 | .extra2 = &two, |
fadd8fbd | 1313 | }, |
fe071d7e | 1314 | { |
fe071d7e DR |
1315 | .procname = "oom_kill_allocating_task", |
1316 | .data = &sysctl_oom_kill_allocating_task, | |
1317 | .maxlen = sizeof(sysctl_oom_kill_allocating_task), | |
1318 | .mode = 0644, | |
6d456111 | 1319 | .proc_handler = proc_dointvec, |
fe071d7e | 1320 | }, |
fef1bdd6 | 1321 | { |
fef1bdd6 DR |
1322 | .procname = "oom_dump_tasks", |
1323 | .data = &sysctl_oom_dump_tasks, | |
1324 | .maxlen = sizeof(sysctl_oom_dump_tasks), | |
1325 | .mode = 0644, | |
6d456111 | 1326 | .proc_handler = proc_dointvec, |
fef1bdd6 | 1327 | }, |
1da177e4 | 1328 | { |
1da177e4 LT |
1329 | .procname = "overcommit_ratio", |
1330 | .data = &sysctl_overcommit_ratio, | |
1331 | .maxlen = sizeof(sysctl_overcommit_ratio), | |
1332 | .mode = 0644, | |
49f0ce5f JM |
1333 | .proc_handler = overcommit_ratio_handler, |
1334 | }, | |
1335 | { | |
1336 | .procname = "overcommit_kbytes", | |
1337 | .data = &sysctl_overcommit_kbytes, | |
1338 | .maxlen = sizeof(sysctl_overcommit_kbytes), | |
1339 | .mode = 0644, | |
1340 | .proc_handler = overcommit_kbytes_handler, | |
1da177e4 LT |
1341 | }, |
1342 | { | |
1da177e4 LT |
1343 | .procname = "page-cluster", |
1344 | .data = &page_cluster, | |
1345 | .maxlen = sizeof(int), | |
1346 | .mode = 0644, | |
cb16e95f | 1347 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1348 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1349 | }, |
1350 | { | |
1da177e4 LT |
1351 | .procname = "dirty_background_ratio", |
1352 | .data = &dirty_background_ratio, | |
1353 | .maxlen = sizeof(dirty_background_ratio), | |
1354 | .mode = 0644, | |
6d456111 | 1355 | .proc_handler = dirty_background_ratio_handler, |
eec4844f | 1356 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1357 | .extra2 = &one_hundred, |
1358 | }, | |
2da02997 | 1359 | { |
2da02997 DR |
1360 | .procname = "dirty_background_bytes", |
1361 | .data = &dirty_background_bytes, | |
1362 | .maxlen = sizeof(dirty_background_bytes), | |
1363 | .mode = 0644, | |
6d456111 | 1364 | .proc_handler = dirty_background_bytes_handler, |
fc3501d4 | 1365 | .extra1 = &one_ul, |
2da02997 | 1366 | }, |
1da177e4 | 1367 | { |
1da177e4 LT |
1368 | .procname = "dirty_ratio", |
1369 | .data = &vm_dirty_ratio, | |
1370 | .maxlen = sizeof(vm_dirty_ratio), | |
1371 | .mode = 0644, | |
6d456111 | 1372 | .proc_handler = dirty_ratio_handler, |
eec4844f | 1373 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1374 | .extra2 = &one_hundred, |
1375 | }, | |
2da02997 | 1376 | { |
2da02997 DR |
1377 | .procname = "dirty_bytes", |
1378 | .data = &vm_dirty_bytes, | |
1379 | .maxlen = sizeof(vm_dirty_bytes), | |
1380 | .mode = 0644, | |
6d456111 | 1381 | .proc_handler = dirty_bytes_handler, |
9e4a5bda | 1382 | .extra1 = &dirty_bytes_min, |
2da02997 | 1383 | }, |
1da177e4 | 1384 | { |
1da177e4 | 1385 | .procname = "dirty_writeback_centisecs", |
f6ef9438 BS |
1386 | .data = &dirty_writeback_interval, |
1387 | .maxlen = sizeof(dirty_writeback_interval), | |
1da177e4 | 1388 | .mode = 0644, |
6d456111 | 1389 | .proc_handler = dirty_writeback_centisecs_handler, |
1da177e4 LT |
1390 | }, |
1391 | { | |
1da177e4 | 1392 | .procname = "dirty_expire_centisecs", |
f6ef9438 BS |
1393 | .data = &dirty_expire_interval, |
1394 | .maxlen = sizeof(dirty_expire_interval), | |
1da177e4 | 1395 | .mode = 0644, |
cb16e95f | 1396 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1397 | .extra1 = SYSCTL_ZERO, |
1da177e4 | 1398 | }, |
1efff914 TT |
1399 | { |
1400 | .procname = "dirtytime_expire_seconds", | |
1401 | .data = &dirtytime_expire_interval, | |
2d87b309 | 1402 | .maxlen = sizeof(dirtytime_expire_interval), |
1efff914 TT |
1403 | .mode = 0644, |
1404 | .proc_handler = dirtytime_interval_handler, | |
eec4844f | 1405 | .extra1 = SYSCTL_ZERO, |
1efff914 | 1406 | }, |
1da177e4 | 1407 | { |
1da177e4 LT |
1408 | .procname = "swappiness", |
1409 | .data = &vm_swappiness, | |
1410 | .maxlen = sizeof(vm_swappiness), | |
1411 | .mode = 0644, | |
6d456111 | 1412 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1413 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1414 | .extra2 = &one_hundred, |
1415 | }, | |
1416 | #ifdef CONFIG_HUGETLB_PAGE | |
06808b08 | 1417 | { |
1da177e4 | 1418 | .procname = "nr_hugepages", |
e5ff2159 | 1419 | .data = NULL, |
1da177e4 LT |
1420 | .maxlen = sizeof(unsigned long), |
1421 | .mode = 0644, | |
6d456111 | 1422 | .proc_handler = hugetlb_sysctl_handler, |
06808b08 LS |
1423 | }, |
1424 | #ifdef CONFIG_NUMA | |
1425 | { | |
1426 | .procname = "nr_hugepages_mempolicy", | |
1427 | .data = NULL, | |
1428 | .maxlen = sizeof(unsigned long), | |
1429 | .mode = 0644, | |
1430 | .proc_handler = &hugetlb_mempolicy_sysctl_handler, | |
06808b08 | 1431 | }, |
4518085e KW |
1432 | { |
1433 | .procname = "numa_stat", | |
1434 | .data = &sysctl_vm_numa_stat, | |
1435 | .maxlen = sizeof(int), | |
1436 | .mode = 0644, | |
1437 | .proc_handler = sysctl_vm_numa_stat_handler, | |
eec4844f MC |
1438 | .extra1 = SYSCTL_ZERO, |
1439 | .extra2 = SYSCTL_ONE, | |
4518085e | 1440 | }, |
06808b08 | 1441 | #endif |
1da177e4 | 1442 | { |
1da177e4 LT |
1443 | .procname = "hugetlb_shm_group", |
1444 | .data = &sysctl_hugetlb_shm_group, | |
1445 | .maxlen = sizeof(gid_t), | |
1446 | .mode = 0644, | |
6d456111 | 1447 | .proc_handler = proc_dointvec, |
1da177e4 | 1448 | }, |
d1c3fb1f | 1449 | { |
d1c3fb1f | 1450 | .procname = "nr_overcommit_hugepages", |
e5ff2159 AK |
1451 | .data = NULL, |
1452 | .maxlen = sizeof(unsigned long), | |
d1c3fb1f | 1453 | .mode = 0644, |
6d456111 | 1454 | .proc_handler = hugetlb_overcommit_handler, |
d1c3fb1f | 1455 | }, |
1da177e4 LT |
1456 | #endif |
1457 | { | |
1da177e4 LT |
1458 | .procname = "lowmem_reserve_ratio", |
1459 | .data = &sysctl_lowmem_reserve_ratio, | |
1460 | .maxlen = sizeof(sysctl_lowmem_reserve_ratio), | |
1461 | .mode = 0644, | |
6d456111 | 1462 | .proc_handler = lowmem_reserve_ratio_sysctl_handler, |
1da177e4 | 1463 | }, |
9d0243bc | 1464 | { |
9d0243bc AM |
1465 | .procname = "drop_caches", |
1466 | .data = &sysctl_drop_caches, | |
1467 | .maxlen = sizeof(int), | |
1468 | .mode = 0644, | |
1469 | .proc_handler = drop_caches_sysctl_handler, | |
eec4844f | 1470 | .extra1 = SYSCTL_ONE, |
5509a5d2 | 1471 | .extra2 = &four, |
9d0243bc | 1472 | }, |
76ab0f53 MG |
1473 | #ifdef CONFIG_COMPACTION |
1474 | { | |
1475 | .procname = "compact_memory", | |
1476 | .data = &sysctl_compact_memory, | |
1477 | .maxlen = sizeof(int), | |
1478 | .mode = 0200, | |
1479 | .proc_handler = sysctl_compaction_handler, | |
1480 | }, | |
5e771905 MG |
1481 | { |
1482 | .procname = "extfrag_threshold", | |
1483 | .data = &sysctl_extfrag_threshold, | |
1484 | .maxlen = sizeof(int), | |
1485 | .mode = 0644, | |
6b7e5cad | 1486 | .proc_handler = proc_dointvec_minmax, |
5e771905 MG |
1487 | .extra1 = &min_extfrag_threshold, |
1488 | .extra2 = &max_extfrag_threshold, | |
1489 | }, | |
5bbe3547 EM |
1490 | { |
1491 | .procname = "compact_unevictable_allowed", | |
1492 | .data = &sysctl_compact_unevictable_allowed, | |
1493 | .maxlen = sizeof(int), | |
1494 | .mode = 0644, | |
1495 | .proc_handler = proc_dointvec, | |
eec4844f MC |
1496 | .extra1 = SYSCTL_ZERO, |
1497 | .extra2 = SYSCTL_ONE, | |
5bbe3547 | 1498 | }, |
5e771905 | 1499 | |
76ab0f53 | 1500 | #endif /* CONFIG_COMPACTION */ |
1da177e4 | 1501 | { |
1da177e4 LT |
1502 | .procname = "min_free_kbytes", |
1503 | .data = &min_free_kbytes, | |
1504 | .maxlen = sizeof(min_free_kbytes), | |
1505 | .mode = 0644, | |
6d456111 | 1506 | .proc_handler = min_free_kbytes_sysctl_handler, |
eec4844f | 1507 | .extra1 = SYSCTL_ZERO, |
1da177e4 | 1508 | }, |
1c30844d MG |
1509 | { |
1510 | .procname = "watermark_boost_factor", | |
1511 | .data = &watermark_boost_factor, | |
1512 | .maxlen = sizeof(watermark_boost_factor), | |
1513 | .mode = 0644, | |
1514 | .proc_handler = watermark_boost_factor_sysctl_handler, | |
eec4844f | 1515 | .extra1 = SYSCTL_ZERO, |
1c30844d | 1516 | }, |
795ae7a0 JW |
1517 | { |
1518 | .procname = "watermark_scale_factor", | |
1519 | .data = &watermark_scale_factor, | |
1520 | .maxlen = sizeof(watermark_scale_factor), | |
1521 | .mode = 0644, | |
1522 | .proc_handler = watermark_scale_factor_sysctl_handler, | |
eec4844f | 1523 | .extra1 = SYSCTL_ONE, |
795ae7a0 JW |
1524 | .extra2 = &one_thousand, |
1525 | }, | |
8ad4b1fb | 1526 | { |
8ad4b1fb RS |
1527 | .procname = "percpu_pagelist_fraction", |
1528 | .data = &percpu_pagelist_fraction, | |
1529 | .maxlen = sizeof(percpu_pagelist_fraction), | |
1530 | .mode = 0644, | |
6d456111 | 1531 | .proc_handler = percpu_pagelist_fraction_sysctl_handler, |
eec4844f | 1532 | .extra1 = SYSCTL_ZERO, |
8ad4b1fb | 1533 | }, |
1da177e4 LT |
1534 | #ifdef CONFIG_MMU |
1535 | { | |
1da177e4 LT |
1536 | .procname = "max_map_count", |
1537 | .data = &sysctl_max_map_count, | |
1538 | .maxlen = sizeof(sysctl_max_map_count), | |
1539 | .mode = 0644, | |
3e26120c | 1540 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1541 | .extra1 = SYSCTL_ZERO, |
1da177e4 | 1542 | }, |
dd8632a1 PM |
1543 | #else |
1544 | { | |
dd8632a1 PM |
1545 | .procname = "nr_trim_pages", |
1546 | .data = &sysctl_nr_trim_pages, | |
1547 | .maxlen = sizeof(sysctl_nr_trim_pages), | |
1548 | .mode = 0644, | |
6d456111 | 1549 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1550 | .extra1 = SYSCTL_ZERO, |
dd8632a1 | 1551 | }, |
1da177e4 LT |
1552 | #endif |
1553 | { | |
1da177e4 LT |
1554 | .procname = "laptop_mode", |
1555 | .data = &laptop_mode, | |
1556 | .maxlen = sizeof(laptop_mode), | |
1557 | .mode = 0644, | |
6d456111 | 1558 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
1559 | }, |
1560 | { | |
1da177e4 LT |
1561 | .procname = "block_dump", |
1562 | .data = &block_dump, | |
1563 | .maxlen = sizeof(block_dump), | |
1564 | .mode = 0644, | |
6d456111 | 1565 | .proc_handler = proc_dointvec, |
eec4844f | 1566 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1567 | }, |
1568 | { | |
1da177e4 LT |
1569 | .procname = "vfs_cache_pressure", |
1570 | .data = &sysctl_vfs_cache_pressure, | |
1571 | .maxlen = sizeof(sysctl_vfs_cache_pressure), | |
1572 | .mode = 0644, | |
6d456111 | 1573 | .proc_handler = proc_dointvec, |
eec4844f | 1574 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1575 | }, |
1576 | #ifdef HAVE_ARCH_PICK_MMAP_LAYOUT | |
1577 | { | |
1da177e4 LT |
1578 | .procname = "legacy_va_layout", |
1579 | .data = &sysctl_legacy_va_layout, | |
1580 | .maxlen = sizeof(sysctl_legacy_va_layout), | |
1581 | .mode = 0644, | |
6d456111 | 1582 | .proc_handler = proc_dointvec, |
eec4844f | 1583 | .extra1 = SYSCTL_ZERO, |
1da177e4 LT |
1584 | }, |
1585 | #endif | |
1743660b CL |
1586 | #ifdef CONFIG_NUMA |
1587 | { | |
1743660b | 1588 | .procname = "zone_reclaim_mode", |
a5f5f91d MG |
1589 | .data = &node_reclaim_mode, |
1590 | .maxlen = sizeof(node_reclaim_mode), | |
1743660b | 1591 | .mode = 0644, |
6d456111 | 1592 | .proc_handler = proc_dointvec, |
eec4844f | 1593 | .extra1 = SYSCTL_ZERO, |
1743660b | 1594 | }, |
9614634f | 1595 | { |
9614634f CL |
1596 | .procname = "min_unmapped_ratio", |
1597 | .data = &sysctl_min_unmapped_ratio, | |
1598 | .maxlen = sizeof(sysctl_min_unmapped_ratio), | |
1599 | .mode = 0644, | |
6d456111 | 1600 | .proc_handler = sysctl_min_unmapped_ratio_sysctl_handler, |
eec4844f | 1601 | .extra1 = SYSCTL_ZERO, |
9614634f CL |
1602 | .extra2 = &one_hundred, |
1603 | }, | |
0ff38490 | 1604 | { |
0ff38490 CL |
1605 | .procname = "min_slab_ratio", |
1606 | .data = &sysctl_min_slab_ratio, | |
1607 | .maxlen = sizeof(sysctl_min_slab_ratio), | |
1608 | .mode = 0644, | |
6d456111 | 1609 | .proc_handler = sysctl_min_slab_ratio_sysctl_handler, |
eec4844f | 1610 | .extra1 = SYSCTL_ZERO, |
0ff38490 CL |
1611 | .extra2 = &one_hundred, |
1612 | }, | |
e6e5494c | 1613 | #endif |
77461ab3 CL |
1614 | #ifdef CONFIG_SMP |
1615 | { | |
77461ab3 CL |
1616 | .procname = "stat_interval", |
1617 | .data = &sysctl_stat_interval, | |
1618 | .maxlen = sizeof(sysctl_stat_interval), | |
1619 | .mode = 0644, | |
6d456111 | 1620 | .proc_handler = proc_dointvec_jiffies, |
77461ab3 | 1621 | }, |
52b6f46b HD |
1622 | { |
1623 | .procname = "stat_refresh", | |
1624 | .data = NULL, | |
1625 | .maxlen = 0, | |
1626 | .mode = 0600, | |
1627 | .proc_handler = vmstat_refresh, | |
1628 | }, | |
77461ab3 | 1629 | #endif |
6e141546 | 1630 | #ifdef CONFIG_MMU |
ed032189 | 1631 | { |
ed032189 | 1632 | .procname = "mmap_min_addr", |
788084ab EP |
1633 | .data = &dac_mmap_min_addr, |
1634 | .maxlen = sizeof(unsigned long), | |
ed032189 | 1635 | .mode = 0644, |
6d456111 | 1636 | .proc_handler = mmap_min_addr_handler, |
ed032189 | 1637 | }, |
6e141546 | 1638 | #endif |
f0c0b2b8 KH |
1639 | #ifdef CONFIG_NUMA |
1640 | { | |
f0c0b2b8 KH |
1641 | .procname = "numa_zonelist_order", |
1642 | .data = &numa_zonelist_order, | |
1643 | .maxlen = NUMA_ZONELIST_ORDER_LEN, | |
1644 | .mode = 0644, | |
6d456111 | 1645 | .proc_handler = numa_zonelist_order_handler, |
f0c0b2b8 KH |
1646 | }, |
1647 | #endif | |
2b8232ce | 1648 | #if (defined(CONFIG_X86_32) && !defined(CONFIG_UML))|| \ |
5c36e657 | 1649 | (defined(CONFIG_SUPERH) && defined(CONFIG_VSYSCALL)) |
e6e5494c | 1650 | { |
e6e5494c | 1651 | .procname = "vdso_enabled", |
3d7ee969 AL |
1652 | #ifdef CONFIG_X86_32 |
1653 | .data = &vdso32_enabled, | |
1654 | .maxlen = sizeof(vdso32_enabled), | |
1655 | #else | |
e6e5494c IM |
1656 | .data = &vdso_enabled, |
1657 | .maxlen = sizeof(vdso_enabled), | |
3d7ee969 | 1658 | #endif |
e6e5494c | 1659 | .mode = 0644, |
6d456111 | 1660 | .proc_handler = proc_dointvec, |
eec4844f | 1661 | .extra1 = SYSCTL_ZERO, |
e6e5494c | 1662 | }, |
1da177e4 | 1663 | #endif |
195cf453 BG |
1664 | #ifdef CONFIG_HIGHMEM |
1665 | { | |
195cf453 BG |
1666 | .procname = "highmem_is_dirtyable", |
1667 | .data = &vm_highmem_is_dirtyable, | |
1668 | .maxlen = sizeof(vm_highmem_is_dirtyable), | |
1669 | .mode = 0644, | |
6d456111 | 1670 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
1671 | .extra1 = SYSCTL_ZERO, |
1672 | .extra2 = SYSCTL_ONE, | |
195cf453 BG |
1673 | }, |
1674 | #endif | |
6a46079c AK |
1675 | #ifdef CONFIG_MEMORY_FAILURE |
1676 | { | |
6a46079c AK |
1677 | .procname = "memory_failure_early_kill", |
1678 | .data = &sysctl_memory_failure_early_kill, | |
1679 | .maxlen = sizeof(sysctl_memory_failure_early_kill), | |
1680 | .mode = 0644, | |
6d456111 | 1681 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
1682 | .extra1 = SYSCTL_ZERO, |
1683 | .extra2 = SYSCTL_ONE, | |
6a46079c AK |
1684 | }, |
1685 | { | |
6a46079c AK |
1686 | .procname = "memory_failure_recovery", |
1687 | .data = &sysctl_memory_failure_recovery, | |
1688 | .maxlen = sizeof(sysctl_memory_failure_recovery), | |
1689 | .mode = 0644, | |
6d456111 | 1690 | .proc_handler = proc_dointvec_minmax, |
eec4844f MC |
1691 | .extra1 = SYSCTL_ZERO, |
1692 | .extra2 = SYSCTL_ONE, | |
6a46079c AK |
1693 | }, |
1694 | #endif | |
c9b1d098 AS |
1695 | { |
1696 | .procname = "user_reserve_kbytes", | |
1697 | .data = &sysctl_user_reserve_kbytes, | |
1698 | .maxlen = sizeof(sysctl_user_reserve_kbytes), | |
1699 | .mode = 0644, | |
1700 | .proc_handler = proc_doulongvec_minmax, | |
1701 | }, | |
4eeab4f5 AS |
1702 | { |
1703 | .procname = "admin_reserve_kbytes", | |
1704 | .data = &sysctl_admin_reserve_kbytes, | |
1705 | .maxlen = sizeof(sysctl_admin_reserve_kbytes), | |
1706 | .mode = 0644, | |
1707 | .proc_handler = proc_doulongvec_minmax, | |
1708 | }, | |
d07e2259 DC |
1709 | #ifdef CONFIG_HAVE_ARCH_MMAP_RND_BITS |
1710 | { | |
1711 | .procname = "mmap_rnd_bits", | |
1712 | .data = &mmap_rnd_bits, | |
1713 | .maxlen = sizeof(mmap_rnd_bits), | |
1714 | .mode = 0600, | |
1715 | .proc_handler = proc_dointvec_minmax, | |
1716 | .extra1 = (void *)&mmap_rnd_bits_min, | |
1717 | .extra2 = (void *)&mmap_rnd_bits_max, | |
1718 | }, | |
1719 | #endif | |
1720 | #ifdef CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS | |
1721 | { | |
1722 | .procname = "mmap_rnd_compat_bits", | |
1723 | .data = &mmap_rnd_compat_bits, | |
1724 | .maxlen = sizeof(mmap_rnd_compat_bits), | |
1725 | .mode = 0600, | |
1726 | .proc_handler = proc_dointvec_minmax, | |
1727 | .extra1 = (void *)&mmap_rnd_compat_bits_min, | |
1728 | .extra2 = (void *)&mmap_rnd_compat_bits_max, | |
1729 | }, | |
cefdca0a PX |
1730 | #endif |
1731 | #ifdef CONFIG_USERFAULTFD | |
1732 | { | |
1733 | .procname = "unprivileged_userfaultfd", | |
1734 | .data = &sysctl_unprivileged_userfaultfd, | |
1735 | .maxlen = sizeof(sysctl_unprivileged_userfaultfd), | |
1736 | .mode = 0644, | |
1737 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1738 | .extra1 = SYSCTL_ZERO, |
1739 | .extra2 = SYSCTL_ONE, | |
cefdca0a | 1740 | }, |
d07e2259 | 1741 | #endif |
6fce56ec | 1742 | { } |
1da177e4 LT |
1743 | }; |
1744 | ||
d8217f07 | 1745 | static struct ctl_table fs_table[] = { |
1da177e4 | 1746 | { |
1da177e4 LT |
1747 | .procname = "inode-nr", |
1748 | .data = &inodes_stat, | |
3942c07c | 1749 | .maxlen = 2*sizeof(long), |
1da177e4 | 1750 | .mode = 0444, |
cffbc8aa | 1751 | .proc_handler = proc_nr_inodes, |
1da177e4 LT |
1752 | }, |
1753 | { | |
1da177e4 LT |
1754 | .procname = "inode-state", |
1755 | .data = &inodes_stat, | |
3942c07c | 1756 | .maxlen = 7*sizeof(long), |
1da177e4 | 1757 | .mode = 0444, |
cffbc8aa | 1758 | .proc_handler = proc_nr_inodes, |
1da177e4 LT |
1759 | }, |
1760 | { | |
1da177e4 LT |
1761 | .procname = "file-nr", |
1762 | .data = &files_stat, | |
518de9b3 | 1763 | .maxlen = sizeof(files_stat), |
1da177e4 | 1764 | .mode = 0444, |
6d456111 | 1765 | .proc_handler = proc_nr_files, |
1da177e4 LT |
1766 | }, |
1767 | { | |
1da177e4 LT |
1768 | .procname = "file-max", |
1769 | .data = &files_stat.max_files, | |
518de9b3 | 1770 | .maxlen = sizeof(files_stat.max_files), |
1da177e4 | 1771 | .mode = 0644, |
518de9b3 | 1772 | .proc_handler = proc_doulongvec_minmax, |
9002b214 | 1773 | .extra1 = &zero_ul, |
32a5ad9c | 1774 | .extra2 = &long_max, |
1da177e4 | 1775 | }, |
9cfe015a | 1776 | { |
9cfe015a ED |
1777 | .procname = "nr_open", |
1778 | .data = &sysctl_nr_open, | |
9b80a184 | 1779 | .maxlen = sizeof(unsigned int), |
9cfe015a | 1780 | .mode = 0644, |
6d456111 | 1781 | .proc_handler = proc_dointvec_minmax, |
eceea0b3 AV |
1782 | .extra1 = &sysctl_nr_open_min, |
1783 | .extra2 = &sysctl_nr_open_max, | |
9cfe015a | 1784 | }, |
1da177e4 | 1785 | { |
1da177e4 LT |
1786 | .procname = "dentry-state", |
1787 | .data = &dentry_stat, | |
3942c07c | 1788 | .maxlen = 6*sizeof(long), |
1da177e4 | 1789 | .mode = 0444, |
312d3ca8 | 1790 | .proc_handler = proc_nr_dentry, |
1da177e4 LT |
1791 | }, |
1792 | { | |
1da177e4 LT |
1793 | .procname = "overflowuid", |
1794 | .data = &fs_overflowuid, | |
1795 | .maxlen = sizeof(int), | |
1796 | .mode = 0644, | |
6d456111 | 1797 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
1798 | .extra1 = &minolduid, |
1799 | .extra2 = &maxolduid, | |
1800 | }, | |
1801 | { | |
1da177e4 LT |
1802 | .procname = "overflowgid", |
1803 | .data = &fs_overflowgid, | |
1804 | .maxlen = sizeof(int), | |
1805 | .mode = 0644, | |
6d456111 | 1806 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
1807 | .extra1 = &minolduid, |
1808 | .extra2 = &maxolduid, | |
1809 | }, | |
bfcd17a6 | 1810 | #ifdef CONFIG_FILE_LOCKING |
1da177e4 | 1811 | { |
1da177e4 LT |
1812 | .procname = "leases-enable", |
1813 | .data = &leases_enable, | |
1814 | .maxlen = sizeof(int), | |
1815 | .mode = 0644, | |
6d456111 | 1816 | .proc_handler = proc_dointvec, |
1da177e4 | 1817 | }, |
bfcd17a6 | 1818 | #endif |
1da177e4 LT |
1819 | #ifdef CONFIG_DNOTIFY |
1820 | { | |
1da177e4 LT |
1821 | .procname = "dir-notify-enable", |
1822 | .data = &dir_notify_enable, | |
1823 | .maxlen = sizeof(int), | |
1824 | .mode = 0644, | |
6d456111 | 1825 | .proc_handler = proc_dointvec, |
1da177e4 LT |
1826 | }, |
1827 | #endif | |
1828 | #ifdef CONFIG_MMU | |
bfcd17a6 | 1829 | #ifdef CONFIG_FILE_LOCKING |
1da177e4 | 1830 | { |
1da177e4 LT |
1831 | .procname = "lease-break-time", |
1832 | .data = &lease_break_time, | |
1833 | .maxlen = sizeof(int), | |
1834 | .mode = 0644, | |
6d456111 | 1835 | .proc_handler = proc_dointvec, |
1da177e4 | 1836 | }, |
bfcd17a6 | 1837 | #endif |
ebf3f09c | 1838 | #ifdef CONFIG_AIO |
1da177e4 | 1839 | { |
1da177e4 LT |
1840 | .procname = "aio-nr", |
1841 | .data = &aio_nr, | |
1842 | .maxlen = sizeof(aio_nr), | |
1843 | .mode = 0444, | |
6d456111 | 1844 | .proc_handler = proc_doulongvec_minmax, |
1da177e4 LT |
1845 | }, |
1846 | { | |
1da177e4 LT |
1847 | .procname = "aio-max-nr", |
1848 | .data = &aio_max_nr, | |
1849 | .maxlen = sizeof(aio_max_nr), | |
1850 | .mode = 0644, | |
6d456111 | 1851 | .proc_handler = proc_doulongvec_minmax, |
1da177e4 | 1852 | }, |
ebf3f09c | 1853 | #endif /* CONFIG_AIO */ |
2d9048e2 | 1854 | #ifdef CONFIG_INOTIFY_USER |
0399cb08 | 1855 | { |
0399cb08 RL |
1856 | .procname = "inotify", |
1857 | .mode = 0555, | |
1858 | .child = inotify_table, | |
1859 | }, | |
1860 | #endif | |
7ef9964e DL |
1861 | #ifdef CONFIG_EPOLL |
1862 | { | |
1863 | .procname = "epoll", | |
1864 | .mode = 0555, | |
1865 | .child = epoll_table, | |
1866 | }, | |
1867 | #endif | |
1da177e4 | 1868 | #endif |
800179c9 KC |
1869 | { |
1870 | .procname = "protected_symlinks", | |
1871 | .data = &sysctl_protected_symlinks, | |
1872 | .maxlen = sizeof(int), | |
1873 | .mode = 0600, | |
1874 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1875 | .extra1 = SYSCTL_ZERO, |
1876 | .extra2 = SYSCTL_ONE, | |
800179c9 KC |
1877 | }, |
1878 | { | |
1879 | .procname = "protected_hardlinks", | |
1880 | .data = &sysctl_protected_hardlinks, | |
1881 | .maxlen = sizeof(int), | |
1882 | .mode = 0600, | |
1883 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1884 | .extra1 = SYSCTL_ZERO, |
1885 | .extra2 = SYSCTL_ONE, | |
800179c9 | 1886 | }, |
30aba665 SM |
1887 | { |
1888 | .procname = "protected_fifos", | |
1889 | .data = &sysctl_protected_fifos, | |
1890 | .maxlen = sizeof(int), | |
1891 | .mode = 0600, | |
1892 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1893 | .extra1 = SYSCTL_ZERO, |
30aba665 SM |
1894 | .extra2 = &two, |
1895 | }, | |
1896 | { | |
1897 | .procname = "protected_regular", | |
1898 | .data = &sysctl_protected_regular, | |
1899 | .maxlen = sizeof(int), | |
1900 | .mode = 0600, | |
1901 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1902 | .extra1 = SYSCTL_ZERO, |
30aba665 SM |
1903 | .extra2 = &two, |
1904 | }, | |
d6e71144 | 1905 | { |
d6e71144 AC |
1906 | .procname = "suid_dumpable", |
1907 | .data = &suid_dumpable, | |
1908 | .maxlen = sizeof(int), | |
1909 | .mode = 0644, | |
54b50199 | 1910 | .proc_handler = proc_dointvec_minmax_coredump, |
eec4844f | 1911 | .extra1 = SYSCTL_ZERO, |
8e654fba | 1912 | .extra2 = &two, |
d6e71144 | 1913 | }, |
2abc26fc EB |
1914 | #if defined(CONFIG_BINFMT_MISC) || defined(CONFIG_BINFMT_MISC_MODULE) |
1915 | { | |
2abc26fc EB |
1916 | .procname = "binfmt_misc", |
1917 | .mode = 0555, | |
f9bd6733 | 1918 | .child = sysctl_mount_point, |
2abc26fc EB |
1919 | }, |
1920 | #endif | |
b492e95b | 1921 | { |
ff9da691 JA |
1922 | .procname = "pipe-max-size", |
1923 | .data = &pipe_max_size, | |
98159d97 | 1924 | .maxlen = sizeof(pipe_max_size), |
b492e95b | 1925 | .mode = 0644, |
319e0a21 | 1926 | .proc_handler = proc_dopipe_max_size, |
b492e95b | 1927 | }, |
759c0114 WT |
1928 | { |
1929 | .procname = "pipe-user-pages-hard", | |
1930 | .data = &pipe_user_pages_hard, | |
1931 | .maxlen = sizeof(pipe_user_pages_hard), | |
1932 | .mode = 0644, | |
1933 | .proc_handler = proc_doulongvec_minmax, | |
1934 | }, | |
1935 | { | |
1936 | .procname = "pipe-user-pages-soft", | |
1937 | .data = &pipe_user_pages_soft, | |
1938 | .maxlen = sizeof(pipe_user_pages_soft), | |
1939 | .mode = 0644, | |
1940 | .proc_handler = proc_doulongvec_minmax, | |
1941 | }, | |
d2921684 EB |
1942 | { |
1943 | .procname = "mount-max", | |
1944 | .data = &sysctl_mount_max, | |
1945 | .maxlen = sizeof(unsigned int), | |
1946 | .mode = 0644, | |
1947 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1948 | .extra1 = SYSCTL_ONE, |
d2921684 | 1949 | }, |
6fce56ec | 1950 | { } |
1da177e4 LT |
1951 | }; |
1952 | ||
d8217f07 | 1953 | static struct ctl_table debug_table[] = { |
7ac57a89 | 1954 | #ifdef CONFIG_SYSCTL_EXCEPTION_TRACE |
abd4f750 | 1955 | { |
abd4f750 MAS |
1956 | .procname = "exception-trace", |
1957 | .data = &show_unhandled_signals, | |
1958 | .maxlen = sizeof(int), | |
1959 | .mode = 0644, | |
1960 | .proc_handler = proc_dointvec | |
1961 | }, | |
b2be84df MH |
1962 | #endif |
1963 | #if defined(CONFIG_OPTPROBES) | |
1964 | { | |
1965 | .procname = "kprobes-optimization", | |
1966 | .data = &sysctl_kprobes_optimization, | |
1967 | .maxlen = sizeof(int), | |
1968 | .mode = 0644, | |
1969 | .proc_handler = proc_kprobes_optimization_handler, | |
eec4844f MC |
1970 | .extra1 = SYSCTL_ZERO, |
1971 | .extra2 = SYSCTL_ONE, | |
b2be84df | 1972 | }, |
abd4f750 | 1973 | #endif |
6fce56ec | 1974 | { } |
1da177e4 LT |
1975 | }; |
1976 | ||
d8217f07 | 1977 | static struct ctl_table dev_table[] = { |
6fce56ec | 1978 | { } |
0eeca283 | 1979 | }; |
1da177e4 | 1980 | |
de4e83bd | 1981 | int __init sysctl_init(void) |
d912b0cc | 1982 | { |
fd4b616b SR |
1983 | struct ctl_table_header *hdr; |
1984 | ||
1985 | hdr = register_sysctl_table(sysctl_base_table); | |
1986 | kmemleak_not_leak(hdr); | |
d912b0cc EB |
1987 | return 0; |
1988 | } | |
1989 | ||
b89a8171 EB |
1990 | #endif /* CONFIG_SYSCTL */ |
1991 | ||
1da177e4 LT |
1992 | /* |
1993 | * /proc/sys support | |
1994 | */ | |
1995 | ||
b89a8171 | 1996 | #ifdef CONFIG_PROC_SYSCTL |
1da177e4 | 1997 | |
f8808300 KC |
1998 | static int _proc_do_string(char *data, int maxlen, int write, |
1999 | char __user *buffer, | |
b1ba4ddd | 2000 | size_t *lenp, loff_t *ppos) |
1da177e4 LT |
2001 | { |
2002 | size_t len; | |
2003 | char __user *p; | |
2004 | char c; | |
8d060877 ON |
2005 | |
2006 | if (!data || !maxlen || !*lenp) { | |
1da177e4 LT |
2007 | *lenp = 0; |
2008 | return 0; | |
2009 | } | |
8d060877 | 2010 | |
1da177e4 | 2011 | if (write) { |
f4aacea2 KC |
2012 | if (sysctl_writes_strict == SYSCTL_WRITES_STRICT) { |
2013 | /* Only continue writes not past the end of buffer. */ | |
2014 | len = strlen(data); | |
2015 | if (len > maxlen - 1) | |
2016 | len = maxlen - 1; | |
2017 | ||
2018 | if (*ppos > len) | |
2019 | return 0; | |
2020 | len = *ppos; | |
2021 | } else { | |
2022 | /* Start writing from beginning of buffer. */ | |
2023 | len = 0; | |
2024 | } | |
2025 | ||
2ca9bb45 | 2026 | *ppos += *lenp; |
1da177e4 | 2027 | p = buffer; |
2ca9bb45 | 2028 | while ((p - buffer) < *lenp && len < maxlen - 1) { |
1da177e4 LT |
2029 | if (get_user(c, p++)) |
2030 | return -EFAULT; | |
2031 | if (c == 0 || c == '\n') | |
2032 | break; | |
2ca9bb45 | 2033 | data[len++] = c; |
1da177e4 | 2034 | } |
f8808300 | 2035 | data[len] = 0; |
1da177e4 | 2036 | } else { |
f5dd3d6f SV |
2037 | len = strlen(data); |
2038 | if (len > maxlen) | |
2039 | len = maxlen; | |
8d060877 ON |
2040 | |
2041 | if (*ppos > len) { | |
2042 | *lenp = 0; | |
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | data += *ppos; | |
2047 | len -= *ppos; | |
2048 | ||
1da177e4 LT |
2049 | if (len > *lenp) |
2050 | len = *lenp; | |
2051 | if (len) | |
f8808300 | 2052 | if (copy_to_user(buffer, data, len)) |
1da177e4 LT |
2053 | return -EFAULT; |
2054 | if (len < *lenp) { | |
f8808300 | 2055 | if (put_user('\n', buffer + len)) |
1da177e4 LT |
2056 | return -EFAULT; |
2057 | len++; | |
2058 | } | |
2059 | *lenp = len; | |
2060 | *ppos += len; | |
2061 | } | |
2062 | return 0; | |
2063 | } | |
2064 | ||
f4aacea2 KC |
2065 | static void warn_sysctl_write(struct ctl_table *table) |
2066 | { | |
2067 | pr_warn_once("%s wrote to %s when file position was not 0!\n" | |
2068 | "This will not be supported in the future. To silence this\n" | |
2069 | "warning, set kernel.sysctl_writes_strict = -1\n", | |
2070 | current->comm, table->procname); | |
2071 | } | |
2072 | ||
d383d484 | 2073 | /** |
5f733e8a | 2074 | * proc_first_pos_non_zero_ignore - check if first position is allowed |
d383d484 LR |
2075 | * @ppos: file position |
2076 | * @table: the sysctl table | |
2077 | * | |
2078 | * Returns true if the first position is non-zero and the sysctl_writes_strict | |
2079 | * mode indicates this is not allowed for numeric input types. String proc | |
5f733e8a | 2080 | * handlers can ignore the return value. |
d383d484 LR |
2081 | */ |
2082 | static bool proc_first_pos_non_zero_ignore(loff_t *ppos, | |
2083 | struct ctl_table *table) | |
2084 | { | |
2085 | if (!*ppos) | |
2086 | return false; | |
2087 | ||
2088 | switch (sysctl_writes_strict) { | |
2089 | case SYSCTL_WRITES_STRICT: | |
2090 | return true; | |
2091 | case SYSCTL_WRITES_WARN: | |
2092 | warn_sysctl_write(table); | |
2093 | return false; | |
2094 | default: | |
2095 | return false; | |
2096 | } | |
2097 | } | |
2098 | ||
f5dd3d6f SV |
2099 | /** |
2100 | * proc_dostring - read a string sysctl | |
2101 | * @table: the sysctl table | |
2102 | * @write: %TRUE if this is a write to the sysctl file | |
f5dd3d6f SV |
2103 | * @buffer: the user buffer |
2104 | * @lenp: the size of the user buffer | |
2105 | * @ppos: file position | |
2106 | * | |
2107 | * Reads/writes a string from/to the user buffer. If the kernel | |
2108 | * buffer provided is not large enough to hold the string, the | |
2109 | * string is truncated. The copied string is %NULL-terminated. | |
2110 | * If the string is being read by the user process, it is copied | |
2111 | * and a newline '\n' is added. It is truncated if the buffer is | |
2112 | * not large enough. | |
2113 | * | |
2114 | * Returns 0 on success. | |
2115 | */ | |
8d65af78 | 2116 | int proc_dostring(struct ctl_table *table, int write, |
f5dd3d6f SV |
2117 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2118 | { | |
d383d484 LR |
2119 | if (write) |
2120 | proc_first_pos_non_zero_ignore(ppos, table); | |
f4aacea2 | 2121 | |
f8808300 KC |
2122 | return _proc_do_string((char *)(table->data), table->maxlen, write, |
2123 | (char __user *)buffer, lenp, ppos); | |
f5dd3d6f SV |
2124 | } |
2125 | ||
00b7c339 AW |
2126 | static size_t proc_skip_spaces(char **buf) |
2127 | { | |
2128 | size_t ret; | |
2129 | char *tmp = skip_spaces(*buf); | |
2130 | ret = tmp - *buf; | |
2131 | *buf = tmp; | |
2132 | return ret; | |
2133 | } | |
2134 | ||
9f977fb7 OP |
2135 | static void proc_skip_char(char **buf, size_t *size, const char v) |
2136 | { | |
2137 | while (*size) { | |
2138 | if (**buf != v) | |
2139 | break; | |
2140 | (*size)--; | |
2141 | (*buf)++; | |
2142 | } | |
2143 | } | |
2144 | ||
7f2923c4 CB |
2145 | /** |
2146 | * strtoul_lenient - parse an ASCII formatted integer from a buffer and only | |
2147 | * fail on overflow | |
2148 | * | |
2149 | * @cp: kernel buffer containing the string to parse | |
2150 | * @endp: pointer to store the trailing characters | |
2151 | * @base: the base to use | |
2152 | * @res: where the parsed integer will be stored | |
2153 | * | |
2154 | * In case of success 0 is returned and @res will contain the parsed integer, | |
2155 | * @endp will hold any trailing characters. | |
2156 | * This function will fail the parse on overflow. If there wasn't an overflow | |
2157 | * the function will defer the decision what characters count as invalid to the | |
2158 | * caller. | |
2159 | */ | |
2160 | static int strtoul_lenient(const char *cp, char **endp, unsigned int base, | |
2161 | unsigned long *res) | |
2162 | { | |
2163 | unsigned long long result; | |
2164 | unsigned int rv; | |
2165 | ||
2166 | cp = _parse_integer_fixup_radix(cp, &base); | |
2167 | rv = _parse_integer(cp, base, &result); | |
2168 | if ((rv & KSTRTOX_OVERFLOW) || (result != (unsigned long)result)) | |
2169 | return -ERANGE; | |
2170 | ||
2171 | cp += rv; | |
2172 | ||
2173 | if (endp) | |
2174 | *endp = (char *)cp; | |
2175 | ||
2176 | *res = (unsigned long)result; | |
2177 | return 0; | |
2178 | } | |
2179 | ||
00b7c339 AW |
2180 | #define TMPBUFLEN 22 |
2181 | /** | |
0fc377bd | 2182 | * proc_get_long - reads an ASCII formatted integer from a user buffer |
00b7c339 | 2183 | * |
0fc377bd RD |
2184 | * @buf: a kernel buffer |
2185 | * @size: size of the kernel buffer | |
2186 | * @val: this is where the number will be stored | |
2187 | * @neg: set to %TRUE if number is negative | |
2188 | * @perm_tr: a vector which contains the allowed trailers | |
2189 | * @perm_tr_len: size of the perm_tr vector | |
2190 | * @tr: pointer to store the trailer character | |
00b7c339 | 2191 | * |
0fc377bd RD |
2192 | * In case of success %0 is returned and @buf and @size are updated with |
2193 | * the amount of bytes read. If @tr is non-NULL and a trailing | |
2194 | * character exists (size is non-zero after returning from this | |
2195 | * function), @tr is updated with the trailing character. | |
00b7c339 AW |
2196 | */ |
2197 | static int proc_get_long(char **buf, size_t *size, | |
2198 | unsigned long *val, bool *neg, | |
2199 | const char *perm_tr, unsigned perm_tr_len, char *tr) | |
2200 | { | |
2201 | int len; | |
2202 | char *p, tmp[TMPBUFLEN]; | |
2203 | ||
2204 | if (!*size) | |
2205 | return -EINVAL; | |
2206 | ||
2207 | len = *size; | |
2208 | if (len > TMPBUFLEN - 1) | |
2209 | len = TMPBUFLEN - 1; | |
2210 | ||
2211 | memcpy(tmp, *buf, len); | |
2212 | ||
2213 | tmp[len] = 0; | |
2214 | p = tmp; | |
2215 | if (*p == '-' && *size > 1) { | |
2216 | *neg = true; | |
2217 | p++; | |
2218 | } else | |
2219 | *neg = false; | |
2220 | if (!isdigit(*p)) | |
2221 | return -EINVAL; | |
2222 | ||
7f2923c4 CB |
2223 | if (strtoul_lenient(p, &p, 0, val)) |
2224 | return -EINVAL; | |
00b7c339 AW |
2225 | |
2226 | len = p - tmp; | |
2227 | ||
2228 | /* We don't know if the next char is whitespace thus we may accept | |
2229 | * invalid integers (e.g. 1234...a) or two integers instead of one | |
2230 | * (e.g. 123...1). So lets not allow such large numbers. */ | |
2231 | if (len == TMPBUFLEN - 1) | |
2232 | return -EINVAL; | |
2233 | ||
2234 | if (len < *size && perm_tr_len && !memchr(perm_tr, *p, perm_tr_len)) | |
2235 | return -EINVAL; | |
1da177e4 | 2236 | |
00b7c339 AW |
2237 | if (tr && (len < *size)) |
2238 | *tr = *p; | |
2239 | ||
2240 | *buf += len; | |
2241 | *size -= len; | |
2242 | ||
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | /** | |
0fc377bd | 2247 | * proc_put_long - converts an integer to a decimal ASCII formatted string |
00b7c339 | 2248 | * |
0fc377bd RD |
2249 | * @buf: the user buffer |
2250 | * @size: the size of the user buffer | |
2251 | * @val: the integer to be converted | |
2252 | * @neg: sign of the number, %TRUE for negative | |
00b7c339 | 2253 | * |
0fc377bd RD |
2254 | * In case of success %0 is returned and @buf and @size are updated with |
2255 | * the amount of bytes written. | |
00b7c339 AW |
2256 | */ |
2257 | static int proc_put_long(void __user **buf, size_t *size, unsigned long val, | |
2258 | bool neg) | |
2259 | { | |
2260 | int len; | |
2261 | char tmp[TMPBUFLEN], *p = tmp; | |
2262 | ||
2263 | sprintf(p, "%s%lu", neg ? "-" : "", val); | |
2264 | len = strlen(tmp); | |
2265 | if (len > *size) | |
2266 | len = *size; | |
2267 | if (copy_to_user(*buf, tmp, len)) | |
2268 | return -EFAULT; | |
2269 | *size -= len; | |
2270 | *buf += len; | |
2271 | return 0; | |
2272 | } | |
2273 | #undef TMPBUFLEN | |
2274 | ||
2275 | static int proc_put_char(void __user **buf, size_t *size, char c) | |
2276 | { | |
2277 | if (*size) { | |
2278 | char __user **buffer = (char __user **)buf; | |
2279 | if (put_user(c, *buffer)) | |
2280 | return -EFAULT; | |
2281 | (*size)--, (*buffer)++; | |
2282 | *buf = *buffer; | |
2283 | } | |
2284 | return 0; | |
2285 | } | |
1da177e4 | 2286 | |
00b7c339 | 2287 | static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
2288 | int *valp, |
2289 | int write, void *data) | |
2290 | { | |
2291 | if (write) { | |
230633d1 HS |
2292 | if (*negp) { |
2293 | if (*lvalp > (unsigned long) INT_MAX + 1) | |
2294 | return -EINVAL; | |
2295 | *valp = -*lvalp; | |
2296 | } else { | |
2297 | if (*lvalp > (unsigned long) INT_MAX) | |
2298 | return -EINVAL; | |
2299 | *valp = *lvalp; | |
2300 | } | |
1da177e4 LT |
2301 | } else { |
2302 | int val = *valp; | |
2303 | if (val < 0) { | |
00b7c339 | 2304 | *negp = true; |
9a5bc726 | 2305 | *lvalp = -(unsigned long)val; |
1da177e4 | 2306 | } else { |
00b7c339 | 2307 | *negp = false; |
1da177e4 LT |
2308 | *lvalp = (unsigned long)val; |
2309 | } | |
2310 | } | |
2311 | return 0; | |
2312 | } | |
2313 | ||
4f2fec00 LR |
2314 | static int do_proc_douintvec_conv(unsigned long *lvalp, |
2315 | unsigned int *valp, | |
2316 | int write, void *data) | |
e7d316a0 SAK |
2317 | { |
2318 | if (write) { | |
425fffd8 LZ |
2319 | if (*lvalp > UINT_MAX) |
2320 | return -EINVAL; | |
e7d316a0 SAK |
2321 | *valp = *lvalp; |
2322 | } else { | |
2323 | unsigned int val = *valp; | |
2324 | *lvalp = (unsigned long)val; | |
2325 | } | |
2326 | return 0; | |
2327 | } | |
2328 | ||
00b7c339 AW |
2329 | static const char proc_wspace_sep[] = { ' ', '\t', '\n' }; |
2330 | ||
d8217f07 | 2331 | static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table, |
8d65af78 | 2332 | int write, void __user *buffer, |
fcfbd547 | 2333 | size_t *lenp, loff_t *ppos, |
00b7c339 | 2334 | int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
1da177e4 LT |
2335 | int write, void *data), |
2336 | void *data) | |
2337 | { | |
00b7c339 | 2338 | int *i, vleft, first = 1, err = 0; |
00b7c339 | 2339 | size_t left; |
70f6cbb6 | 2340 | char *kbuf = NULL, *p; |
1da177e4 | 2341 | |
00b7c339 | 2342 | if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) { |
1da177e4 LT |
2343 | *lenp = 0; |
2344 | return 0; | |
2345 | } | |
2346 | ||
fcfbd547 | 2347 | i = (int *) tbl_data; |
1da177e4 LT |
2348 | vleft = table->maxlen / sizeof(*i); |
2349 | left = *lenp; | |
2350 | ||
2351 | if (!conv) | |
2352 | conv = do_proc_dointvec_conv; | |
2353 | ||
00b7c339 | 2354 | if (write) { |
d383d484 LR |
2355 | if (proc_first_pos_non_zero_ignore(ppos, table)) |
2356 | goto out; | |
f4aacea2 | 2357 | |
00b7c339 AW |
2358 | if (left > PAGE_SIZE - 1) |
2359 | left = PAGE_SIZE - 1; | |
70f6cbb6 AV |
2360 | p = kbuf = memdup_user_nul(buffer, left); |
2361 | if (IS_ERR(kbuf)) | |
2362 | return PTR_ERR(kbuf); | |
00b7c339 AW |
2363 | } |
2364 | ||
1da177e4 | 2365 | for (; left && vleft--; i++, first=0) { |
00b7c339 AW |
2366 | unsigned long lval; |
2367 | bool neg; | |
1da177e4 | 2368 | |
00b7c339 | 2369 | if (write) { |
70f6cbb6 | 2370 | left -= proc_skip_spaces(&p); |
1da177e4 | 2371 | |
563b0467 O |
2372 | if (!left) |
2373 | break; | |
70f6cbb6 | 2374 | err = proc_get_long(&p, &left, &lval, &neg, |
00b7c339 AW |
2375 | proc_wspace_sep, |
2376 | sizeof(proc_wspace_sep), NULL); | |
2377 | if (err) | |
1da177e4 | 2378 | break; |
00b7c339 AW |
2379 | if (conv(&neg, &lval, i, 1, data)) { |
2380 | err = -EINVAL; | |
1da177e4 | 2381 | break; |
00b7c339 | 2382 | } |
1da177e4 | 2383 | } else { |
00b7c339 AW |
2384 | if (conv(&neg, &lval, i, 0, data)) { |
2385 | err = -EINVAL; | |
2386 | break; | |
2387 | } | |
1da177e4 | 2388 | if (!first) |
00b7c339 AW |
2389 | err = proc_put_char(&buffer, &left, '\t'); |
2390 | if (err) | |
2391 | break; | |
2392 | err = proc_put_long(&buffer, &left, lval, neg); | |
2393 | if (err) | |
1da177e4 | 2394 | break; |
1da177e4 LT |
2395 | } |
2396 | } | |
2397 | ||
00b7c339 AW |
2398 | if (!write && !first && left && !err) |
2399 | err = proc_put_char(&buffer, &left, '\n'); | |
563b0467 | 2400 | if (write && !err && left) |
70f6cbb6 | 2401 | left -= proc_skip_spaces(&p); |
1da177e4 | 2402 | if (write) { |
70f6cbb6 | 2403 | kfree(kbuf); |
00b7c339 AW |
2404 | if (first) |
2405 | return err ? : -EINVAL; | |
1da177e4 | 2406 | } |
1da177e4 | 2407 | *lenp -= left; |
f4aacea2 | 2408 | out: |
1da177e4 | 2409 | *ppos += *lenp; |
00b7c339 | 2410 | return err; |
1da177e4 LT |
2411 | } |
2412 | ||
8d65af78 | 2413 | static int do_proc_dointvec(struct ctl_table *table, int write, |
fcfbd547 | 2414 | void __user *buffer, size_t *lenp, loff_t *ppos, |
00b7c339 | 2415 | int (*conv)(bool *negp, unsigned long *lvalp, int *valp, |
fcfbd547 KK |
2416 | int write, void *data), |
2417 | void *data) | |
2418 | { | |
8d65af78 | 2419 | return __do_proc_dointvec(table->data, table, write, |
fcfbd547 KK |
2420 | buffer, lenp, ppos, conv, data); |
2421 | } | |
2422 | ||
4f2fec00 LR |
2423 | static int do_proc_douintvec_w(unsigned int *tbl_data, |
2424 | struct ctl_table *table, | |
2425 | void __user *buffer, | |
2426 | size_t *lenp, loff_t *ppos, | |
2427 | int (*conv)(unsigned long *lvalp, | |
2428 | unsigned int *valp, | |
2429 | int write, void *data), | |
2430 | void *data) | |
2431 | { | |
2432 | unsigned long lval; | |
2433 | int err = 0; | |
2434 | size_t left; | |
2435 | bool neg; | |
2436 | char *kbuf = NULL, *p; | |
2437 | ||
2438 | left = *lenp; | |
2439 | ||
2440 | if (proc_first_pos_non_zero_ignore(ppos, table)) | |
2441 | goto bail_early; | |
2442 | ||
2443 | if (left > PAGE_SIZE - 1) | |
2444 | left = PAGE_SIZE - 1; | |
2445 | ||
2446 | p = kbuf = memdup_user_nul(buffer, left); | |
2447 | if (IS_ERR(kbuf)) | |
2448 | return -EINVAL; | |
2449 | ||
2450 | left -= proc_skip_spaces(&p); | |
2451 | if (!left) { | |
2452 | err = -EINVAL; | |
2453 | goto out_free; | |
2454 | } | |
2455 | ||
2456 | err = proc_get_long(&p, &left, &lval, &neg, | |
2457 | proc_wspace_sep, | |
2458 | sizeof(proc_wspace_sep), NULL); | |
2459 | if (err || neg) { | |
2460 | err = -EINVAL; | |
2461 | goto out_free; | |
2462 | } | |
2463 | ||
2464 | if (conv(&lval, tbl_data, 1, data)) { | |
2465 | err = -EINVAL; | |
2466 | goto out_free; | |
2467 | } | |
2468 | ||
2469 | if (!err && left) | |
2470 | left -= proc_skip_spaces(&p); | |
2471 | ||
2472 | out_free: | |
2473 | kfree(kbuf); | |
2474 | if (err) | |
2475 | return -EINVAL; | |
2476 | ||
2477 | return 0; | |
2478 | ||
2479 | /* This is in keeping with old __do_proc_dointvec() */ | |
2480 | bail_early: | |
2481 | *ppos += *lenp; | |
2482 | return err; | |
2483 | } | |
2484 | ||
2485 | static int do_proc_douintvec_r(unsigned int *tbl_data, void __user *buffer, | |
2486 | size_t *lenp, loff_t *ppos, | |
2487 | int (*conv)(unsigned long *lvalp, | |
2488 | unsigned int *valp, | |
2489 | int write, void *data), | |
2490 | void *data) | |
2491 | { | |
2492 | unsigned long lval; | |
2493 | int err = 0; | |
2494 | size_t left; | |
2495 | ||
2496 | left = *lenp; | |
2497 | ||
2498 | if (conv(&lval, tbl_data, 0, data)) { | |
2499 | err = -EINVAL; | |
2500 | goto out; | |
2501 | } | |
2502 | ||
2503 | err = proc_put_long(&buffer, &left, lval, false); | |
2504 | if (err || !left) | |
2505 | goto out; | |
2506 | ||
2507 | err = proc_put_char(&buffer, &left, '\n'); | |
2508 | ||
2509 | out: | |
2510 | *lenp -= left; | |
2511 | *ppos += *lenp; | |
2512 | ||
2513 | return err; | |
2514 | } | |
2515 | ||
2516 | static int __do_proc_douintvec(void *tbl_data, struct ctl_table *table, | |
2517 | int write, void __user *buffer, | |
2518 | size_t *lenp, loff_t *ppos, | |
2519 | int (*conv)(unsigned long *lvalp, | |
2520 | unsigned int *valp, | |
2521 | int write, void *data), | |
2522 | void *data) | |
2523 | { | |
2524 | unsigned int *i, vleft; | |
2525 | ||
2526 | if (!tbl_data || !table->maxlen || !*lenp || (*ppos && !write)) { | |
2527 | *lenp = 0; | |
2528 | return 0; | |
2529 | } | |
2530 | ||
2531 | i = (unsigned int *) tbl_data; | |
2532 | vleft = table->maxlen / sizeof(*i); | |
2533 | ||
2534 | /* | |
2535 | * Arrays are not supported, keep this simple. *Do not* add | |
2536 | * support for them. | |
2537 | */ | |
2538 | if (vleft != 1) { | |
2539 | *lenp = 0; | |
2540 | return -EINVAL; | |
2541 | } | |
2542 | ||
2543 | if (!conv) | |
2544 | conv = do_proc_douintvec_conv; | |
2545 | ||
2546 | if (write) | |
2547 | return do_proc_douintvec_w(i, table, buffer, lenp, ppos, | |
2548 | conv, data); | |
2549 | return do_proc_douintvec_r(i, buffer, lenp, ppos, conv, data); | |
2550 | } | |
2551 | ||
2552 | static int do_proc_douintvec(struct ctl_table *table, int write, | |
2553 | void __user *buffer, size_t *lenp, loff_t *ppos, | |
2554 | int (*conv)(unsigned long *lvalp, | |
2555 | unsigned int *valp, | |
2556 | int write, void *data), | |
2557 | void *data) | |
2558 | { | |
2559 | return __do_proc_douintvec(table->data, table, write, | |
2560 | buffer, lenp, ppos, conv, data); | |
2561 | } | |
2562 | ||
1da177e4 LT |
2563 | /** |
2564 | * proc_dointvec - read a vector of integers | |
2565 | * @table: the sysctl table | |
2566 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2567 | * @buffer: the user buffer |
2568 | * @lenp: the size of the user buffer | |
2569 | * @ppos: file position | |
2570 | * | |
2571 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
2572 | * values from/to the user buffer, treated as an ASCII string. | |
2573 | * | |
2574 | * Returns 0 on success. | |
2575 | */ | |
8d65af78 | 2576 | int proc_dointvec(struct ctl_table *table, int write, |
1da177e4 LT |
2577 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2578 | { | |
e7d316a0 SAK |
2579 | return do_proc_dointvec(table, write, buffer, lenp, ppos, NULL, NULL); |
2580 | } | |
2581 | ||
2582 | /** | |
2583 | * proc_douintvec - read a vector of unsigned integers | |
2584 | * @table: the sysctl table | |
2585 | * @write: %TRUE if this is a write to the sysctl file | |
2586 | * @buffer: the user buffer | |
2587 | * @lenp: the size of the user buffer | |
2588 | * @ppos: file position | |
2589 | * | |
2590 | * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer | |
2591 | * values from/to the user buffer, treated as an ASCII string. | |
2592 | * | |
2593 | * Returns 0 on success. | |
2594 | */ | |
2595 | int proc_douintvec(struct ctl_table *table, int write, | |
2596 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2597 | { | |
4f2fec00 LR |
2598 | return do_proc_douintvec(table, write, buffer, lenp, ppos, |
2599 | do_proc_douintvec_conv, NULL); | |
1da177e4 LT |
2600 | } |
2601 | ||
34f5a398 | 2602 | /* |
25ddbb18 AK |
2603 | * Taint values can only be increased |
2604 | * This means we can safely use a temporary. | |
34f5a398 | 2605 | */ |
8d65af78 | 2606 | static int proc_taint(struct ctl_table *table, int write, |
34f5a398 TT |
2607 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2608 | { | |
25ddbb18 AK |
2609 | struct ctl_table t; |
2610 | unsigned long tmptaint = get_taint(); | |
2611 | int err; | |
34f5a398 | 2612 | |
91fcd412 | 2613 | if (write && !capable(CAP_SYS_ADMIN)) |
34f5a398 TT |
2614 | return -EPERM; |
2615 | ||
25ddbb18 AK |
2616 | t = *table; |
2617 | t.data = &tmptaint; | |
8d65af78 | 2618 | err = proc_doulongvec_minmax(&t, write, buffer, lenp, ppos); |
25ddbb18 AK |
2619 | if (err < 0) |
2620 | return err; | |
2621 | ||
2622 | if (write) { | |
2623 | /* | |
2624 | * Poor man's atomic or. Not worth adding a primitive | |
2625 | * to everyone's atomic.h for this | |
2626 | */ | |
2627 | int i; | |
2628 | for (i = 0; i < BITS_PER_LONG && tmptaint >> i; i++) { | |
2629 | if ((tmptaint >> i) & 1) | |
373d4d09 | 2630 | add_taint(i, LOCKDEP_STILL_OK); |
25ddbb18 AK |
2631 | } |
2632 | } | |
2633 | ||
2634 | return err; | |
34f5a398 TT |
2635 | } |
2636 | ||
bfdc0b49 | 2637 | #ifdef CONFIG_PRINTK |
620f6e8e | 2638 | static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write, |
bfdc0b49 RW |
2639 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2640 | { | |
2641 | if (write && !capable(CAP_SYS_ADMIN)) | |
2642 | return -EPERM; | |
2643 | ||
2644 | return proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
2645 | } | |
2646 | #endif | |
2647 | ||
24704f36 WL |
2648 | /** |
2649 | * struct do_proc_dointvec_minmax_conv_param - proc_dointvec_minmax() range checking structure | |
2650 | * @min: pointer to minimum allowable value | |
2651 | * @max: pointer to maximum allowable value | |
2652 | * | |
2653 | * The do_proc_dointvec_minmax_conv_param structure provides the | |
2654 | * minimum and maximum values for doing range checking for those sysctl | |
2655 | * parameters that use the proc_dointvec_minmax() handler. | |
2656 | */ | |
1da177e4 LT |
2657 | struct do_proc_dointvec_minmax_conv_param { |
2658 | int *min; | |
2659 | int *max; | |
2660 | }; | |
2661 | ||
00b7c339 AW |
2662 | static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp, |
2663 | int *valp, | |
1da177e4 LT |
2664 | int write, void *data) |
2665 | { | |
2bc4fc60 | 2666 | int tmp, ret; |
1da177e4 | 2667 | struct do_proc_dointvec_minmax_conv_param *param = data; |
2bc4fc60 ZW |
2668 | /* |
2669 | * If writing, first do so via a temporary local int so we can | |
2670 | * bounds-check it before touching *valp. | |
2671 | */ | |
2672 | int *ip = write ? &tmp : valp; | |
2673 | ||
2674 | ret = do_proc_dointvec_conv(negp, lvalp, ip, write, data); | |
2675 | if (ret) | |
2676 | return ret; | |
2677 | ||
1da177e4 | 2678 | if (write) { |
2bc4fc60 ZW |
2679 | if ((param->min && *param->min > tmp) || |
2680 | (param->max && *param->max < tmp)) | |
1da177e4 | 2681 | return -EINVAL; |
2bc4fc60 | 2682 | *valp = tmp; |
1da177e4 | 2683 | } |
2bc4fc60 | 2684 | |
1da177e4 LT |
2685 | return 0; |
2686 | } | |
2687 | ||
2688 | /** | |
2689 | * proc_dointvec_minmax - read a vector of integers with min/max values | |
2690 | * @table: the sysctl table | |
2691 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2692 | * @buffer: the user buffer |
2693 | * @lenp: the size of the user buffer | |
2694 | * @ppos: file position | |
2695 | * | |
2696 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
2697 | * values from/to the user buffer, treated as an ASCII string. | |
2698 | * | |
2699 | * This routine will ensure the values are within the range specified by | |
2700 | * table->extra1 (min) and table->extra2 (max). | |
2701 | * | |
24704f36 | 2702 | * Returns 0 on success or -EINVAL on write when the range check fails. |
1da177e4 | 2703 | */ |
8d65af78 | 2704 | int proc_dointvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2705 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2706 | { | |
2707 | struct do_proc_dointvec_minmax_conv_param param = { | |
2708 | .min = (int *) table->extra1, | |
2709 | .max = (int *) table->extra2, | |
2710 | }; | |
8d65af78 | 2711 | return do_proc_dointvec(table, write, buffer, lenp, ppos, |
1da177e4 LT |
2712 | do_proc_dointvec_minmax_conv, ¶m); |
2713 | } | |
2714 | ||
24704f36 WL |
2715 | /** |
2716 | * struct do_proc_douintvec_minmax_conv_param - proc_douintvec_minmax() range checking structure | |
2717 | * @min: pointer to minimum allowable value | |
2718 | * @max: pointer to maximum allowable value | |
2719 | * | |
2720 | * The do_proc_douintvec_minmax_conv_param structure provides the | |
2721 | * minimum and maximum values for doing range checking for those sysctl | |
2722 | * parameters that use the proc_douintvec_minmax() handler. | |
2723 | */ | |
61d9b56a LR |
2724 | struct do_proc_douintvec_minmax_conv_param { |
2725 | unsigned int *min; | |
2726 | unsigned int *max; | |
2727 | }; | |
2728 | ||
2729 | static int do_proc_douintvec_minmax_conv(unsigned long *lvalp, | |
2730 | unsigned int *valp, | |
2731 | int write, void *data) | |
2732 | { | |
2bc4fc60 ZW |
2733 | int ret; |
2734 | unsigned int tmp; | |
61d9b56a | 2735 | struct do_proc_douintvec_minmax_conv_param *param = data; |
2bc4fc60 ZW |
2736 | /* write via temporary local uint for bounds-checking */ |
2737 | unsigned int *up = write ? &tmp : valp; | |
61d9b56a | 2738 | |
2bc4fc60 ZW |
2739 | ret = do_proc_douintvec_conv(lvalp, up, write, data); |
2740 | if (ret) | |
2741 | return ret; | |
fb910c42 | 2742 | |
2bc4fc60 ZW |
2743 | if (write) { |
2744 | if ((param->min && *param->min > tmp) || | |
2745 | (param->max && *param->max < tmp)) | |
61d9b56a LR |
2746 | return -ERANGE; |
2747 | ||
2bc4fc60 | 2748 | *valp = tmp; |
61d9b56a LR |
2749 | } |
2750 | ||
2751 | return 0; | |
2752 | } | |
2753 | ||
2754 | /** | |
2755 | * proc_douintvec_minmax - read a vector of unsigned ints with min/max values | |
2756 | * @table: the sysctl table | |
2757 | * @write: %TRUE if this is a write to the sysctl file | |
2758 | * @buffer: the user buffer | |
2759 | * @lenp: the size of the user buffer | |
2760 | * @ppos: file position | |
2761 | * | |
2762 | * Reads/writes up to table->maxlen/sizeof(unsigned int) unsigned integer | |
2763 | * values from/to the user buffer, treated as an ASCII string. Negative | |
2764 | * strings are not allowed. | |
2765 | * | |
2766 | * This routine will ensure the values are within the range specified by | |
2767 | * table->extra1 (min) and table->extra2 (max). There is a final sanity | |
2768 | * check for UINT_MAX to avoid having to support wrap around uses from | |
2769 | * userspace. | |
2770 | * | |
24704f36 | 2771 | * Returns 0 on success or -ERANGE on write when the range check fails. |
61d9b56a LR |
2772 | */ |
2773 | int proc_douintvec_minmax(struct ctl_table *table, int write, | |
2774 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2775 | { | |
2776 | struct do_proc_douintvec_minmax_conv_param param = { | |
2777 | .min = (unsigned int *) table->extra1, | |
2778 | .max = (unsigned int *) table->extra2, | |
2779 | }; | |
2780 | return do_proc_douintvec(table, write, buffer, lenp, ppos, | |
2781 | do_proc_douintvec_minmax_conv, ¶m); | |
2782 | } | |
2783 | ||
7a8d1819 JL |
2784 | static int do_proc_dopipe_max_size_conv(unsigned long *lvalp, |
2785 | unsigned int *valp, | |
2786 | int write, void *data) | |
2787 | { | |
7a8d1819 | 2788 | if (write) { |
fb910c42 | 2789 | unsigned int val; |
7a8d1819 | 2790 | |
fb910c42 | 2791 | val = round_pipe_size(*lvalp); |
7a8d1819 JL |
2792 | if (val == 0) |
2793 | return -EINVAL; | |
2794 | ||
7a8d1819 JL |
2795 | *valp = val; |
2796 | } else { | |
2797 | unsigned int val = *valp; | |
2798 | *lvalp = (unsigned long) val; | |
2799 | } | |
2800 | ||
2801 | return 0; | |
2802 | } | |
2803 | ||
319e0a21 EB |
2804 | static int proc_dopipe_max_size(struct ctl_table *table, int write, |
2805 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
7a8d1819 | 2806 | { |
7a8d1819 | 2807 | return do_proc_douintvec(table, write, buffer, lenp, ppos, |
4c2e4bef | 2808 | do_proc_dopipe_max_size_conv, NULL); |
7a8d1819 JL |
2809 | } |
2810 | ||
54b50199 KC |
2811 | static void validate_coredump_safety(void) |
2812 | { | |
046d662f | 2813 | #ifdef CONFIG_COREDUMP |
e579d2c2 | 2814 | if (suid_dumpable == SUID_DUMP_ROOT && |
54b50199 | 2815 | core_pattern[0] != '/' && core_pattern[0] != '|') { |
760c6a91 AD |
2816 | printk(KERN_WARNING |
2817 | "Unsafe core_pattern used with fs.suid_dumpable=2.\n" | |
2818 | "Pipe handler or fully qualified core dump path required.\n" | |
2819 | "Set kernel.core_pattern before fs.suid_dumpable.\n" | |
2820 | ); | |
54b50199 | 2821 | } |
046d662f | 2822 | #endif |
54b50199 KC |
2823 | } |
2824 | ||
2825 | static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write, | |
2826 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2827 | { | |
2828 | int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
2829 | if (!error) | |
2830 | validate_coredump_safety(); | |
2831 | return error; | |
2832 | } | |
2833 | ||
046d662f | 2834 | #ifdef CONFIG_COREDUMP |
54b50199 KC |
2835 | static int proc_dostring_coredump(struct ctl_table *table, int write, |
2836 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
2837 | { | |
2838 | int error = proc_dostring(table, write, buffer, lenp, ppos); | |
2839 | if (!error) | |
2840 | validate_coredump_safety(); | |
2841 | return error; | |
2842 | } | |
046d662f | 2843 | #endif |
54b50199 | 2844 | |
d8217f07 | 2845 | static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int write, |
1da177e4 LT |
2846 | void __user *buffer, |
2847 | size_t *lenp, loff_t *ppos, | |
2848 | unsigned long convmul, | |
2849 | unsigned long convdiv) | |
2850 | { | |
00b7c339 AW |
2851 | unsigned long *i, *min, *max; |
2852 | int vleft, first = 1, err = 0; | |
00b7c339 | 2853 | size_t left; |
70f6cbb6 | 2854 | char *kbuf = NULL, *p; |
00b7c339 AW |
2855 | |
2856 | if (!data || !table->maxlen || !*lenp || (*ppos && !write)) { | |
1da177e4 LT |
2857 | *lenp = 0; |
2858 | return 0; | |
2859 | } | |
00b7c339 | 2860 | |
fcfbd547 | 2861 | i = (unsigned long *) data; |
1da177e4 LT |
2862 | min = (unsigned long *) table->extra1; |
2863 | max = (unsigned long *) table->extra2; | |
2864 | vleft = table->maxlen / sizeof(unsigned long); | |
2865 | left = *lenp; | |
00b7c339 AW |
2866 | |
2867 | if (write) { | |
d383d484 LR |
2868 | if (proc_first_pos_non_zero_ignore(ppos, table)) |
2869 | goto out; | |
f4aacea2 | 2870 | |
00b7c339 AW |
2871 | if (left > PAGE_SIZE - 1) |
2872 | left = PAGE_SIZE - 1; | |
70f6cbb6 AV |
2873 | p = kbuf = memdup_user_nul(buffer, left); |
2874 | if (IS_ERR(kbuf)) | |
2875 | return PTR_ERR(kbuf); | |
00b7c339 AW |
2876 | } |
2877 | ||
27b3d80a | 2878 | for (; left && vleft--; i++, first = 0) { |
00b7c339 AW |
2879 | unsigned long val; |
2880 | ||
1da177e4 | 2881 | if (write) { |
00b7c339 AW |
2882 | bool neg; |
2883 | ||
70f6cbb6 | 2884 | left -= proc_skip_spaces(&p); |
09be1784 CL |
2885 | if (!left) |
2886 | break; | |
00b7c339 | 2887 | |
70f6cbb6 | 2888 | err = proc_get_long(&p, &left, &val, &neg, |
00b7c339 AW |
2889 | proc_wspace_sep, |
2890 | sizeof(proc_wspace_sep), NULL); | |
2891 | if (err) | |
1da177e4 LT |
2892 | break; |
2893 | if (neg) | |
1da177e4 | 2894 | continue; |
ff9f8a7c | 2895 | val = convmul * val / convdiv; |
e260ad01 CB |
2896 | if ((min && val < *min) || (max && val > *max)) { |
2897 | err = -EINVAL; | |
2898 | break; | |
2899 | } | |
1da177e4 LT |
2900 | *i = val; |
2901 | } else { | |
00b7c339 | 2902 | val = convdiv * (*i) / convmul; |
7833819d | 2903 | if (!first) { |
00b7c339 | 2904 | err = proc_put_char(&buffer, &left, '\t'); |
7833819d CG |
2905 | if (err) |
2906 | break; | |
2907 | } | |
00b7c339 AW |
2908 | err = proc_put_long(&buffer, &left, val, false); |
2909 | if (err) | |
2910 | break; | |
1da177e4 LT |
2911 | } |
2912 | } | |
2913 | ||
00b7c339 AW |
2914 | if (!write && !first && left && !err) |
2915 | err = proc_put_char(&buffer, &left, '\n'); | |
2916 | if (write && !err) | |
70f6cbb6 | 2917 | left -= proc_skip_spaces(&p); |
1da177e4 | 2918 | if (write) { |
70f6cbb6 | 2919 | kfree(kbuf); |
00b7c339 AW |
2920 | if (first) |
2921 | return err ? : -EINVAL; | |
1da177e4 | 2922 | } |
1da177e4 | 2923 | *lenp -= left; |
f4aacea2 | 2924 | out: |
1da177e4 | 2925 | *ppos += *lenp; |
00b7c339 | 2926 | return err; |
1da177e4 LT |
2927 | } |
2928 | ||
d8217f07 | 2929 | static int do_proc_doulongvec_minmax(struct ctl_table *table, int write, |
fcfbd547 KK |
2930 | void __user *buffer, |
2931 | size_t *lenp, loff_t *ppos, | |
2932 | unsigned long convmul, | |
2933 | unsigned long convdiv) | |
2934 | { | |
2935 | return __do_proc_doulongvec_minmax(table->data, table, write, | |
8d65af78 | 2936 | buffer, lenp, ppos, convmul, convdiv); |
fcfbd547 KK |
2937 | } |
2938 | ||
1da177e4 LT |
2939 | /** |
2940 | * proc_doulongvec_minmax - read a vector of long integers with min/max values | |
2941 | * @table: the sysctl table | |
2942 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2943 | * @buffer: the user buffer |
2944 | * @lenp: the size of the user buffer | |
2945 | * @ppos: file position | |
2946 | * | |
2947 | * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long | |
2948 | * values from/to the user buffer, treated as an ASCII string. | |
2949 | * | |
2950 | * This routine will ensure the values are within the range specified by | |
2951 | * table->extra1 (min) and table->extra2 (max). | |
2952 | * | |
2953 | * Returns 0 on success. | |
2954 | */ | |
8d65af78 | 2955 | int proc_doulongvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2956 | void __user *buffer, size_t *lenp, loff_t *ppos) |
2957 | { | |
8d65af78 | 2958 | return do_proc_doulongvec_minmax(table, write, buffer, lenp, ppos, 1l, 1l); |
1da177e4 LT |
2959 | } |
2960 | ||
2961 | /** | |
2962 | * proc_doulongvec_ms_jiffies_minmax - read a vector of millisecond values with min/max values | |
2963 | * @table: the sysctl table | |
2964 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
2965 | * @buffer: the user buffer |
2966 | * @lenp: the size of the user buffer | |
2967 | * @ppos: file position | |
2968 | * | |
2969 | * Reads/writes up to table->maxlen/sizeof(unsigned long) unsigned long | |
2970 | * values from/to the user buffer, treated as an ASCII string. The values | |
2971 | * are treated as milliseconds, and converted to jiffies when they are stored. | |
2972 | * | |
2973 | * This routine will ensure the values are within the range specified by | |
2974 | * table->extra1 (min) and table->extra2 (max). | |
2975 | * | |
2976 | * Returns 0 on success. | |
2977 | */ | |
d8217f07 | 2978 | int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
2979 | void __user *buffer, |
2980 | size_t *lenp, loff_t *ppos) | |
2981 | { | |
8d65af78 | 2982 | return do_proc_doulongvec_minmax(table, write, buffer, |
1da177e4 LT |
2983 | lenp, ppos, HZ, 1000l); |
2984 | } | |
2985 | ||
2986 | ||
00b7c339 | 2987 | static int do_proc_dointvec_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
2988 | int *valp, |
2989 | int write, void *data) | |
2990 | { | |
2991 | if (write) { | |
63259457 | 2992 | if (*lvalp > INT_MAX / HZ) |
cba9f33d | 2993 | return 1; |
1da177e4 LT |
2994 | *valp = *negp ? -(*lvalp*HZ) : (*lvalp*HZ); |
2995 | } else { | |
2996 | int val = *valp; | |
2997 | unsigned long lval; | |
2998 | if (val < 0) { | |
00b7c339 | 2999 | *negp = true; |
9a5bc726 | 3000 | lval = -(unsigned long)val; |
1da177e4 | 3001 | } else { |
00b7c339 | 3002 | *negp = false; |
1da177e4 LT |
3003 | lval = (unsigned long)val; |
3004 | } | |
3005 | *lvalp = lval / HZ; | |
3006 | } | |
3007 | return 0; | |
3008 | } | |
3009 | ||
00b7c339 | 3010 | static int do_proc_dointvec_userhz_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
3011 | int *valp, |
3012 | int write, void *data) | |
3013 | { | |
3014 | if (write) { | |
cba9f33d BS |
3015 | if (USER_HZ < HZ && *lvalp > (LONG_MAX / HZ) * USER_HZ) |
3016 | return 1; | |
1da177e4 LT |
3017 | *valp = clock_t_to_jiffies(*negp ? -*lvalp : *lvalp); |
3018 | } else { | |
3019 | int val = *valp; | |
3020 | unsigned long lval; | |
3021 | if (val < 0) { | |
00b7c339 | 3022 | *negp = true; |
9a5bc726 | 3023 | lval = -(unsigned long)val; |
1da177e4 | 3024 | } else { |
00b7c339 | 3025 | *negp = false; |
1da177e4 LT |
3026 | lval = (unsigned long)val; |
3027 | } | |
3028 | *lvalp = jiffies_to_clock_t(lval); | |
3029 | } | |
3030 | return 0; | |
3031 | } | |
3032 | ||
00b7c339 | 3033 | static int do_proc_dointvec_ms_jiffies_conv(bool *negp, unsigned long *lvalp, |
1da177e4 LT |
3034 | int *valp, |
3035 | int write, void *data) | |
3036 | { | |
3037 | if (write) { | |
d738ce8f FF |
3038 | unsigned long jif = msecs_to_jiffies(*negp ? -*lvalp : *lvalp); |
3039 | ||
3040 | if (jif > INT_MAX) | |
3041 | return 1; | |
3042 | *valp = (int)jif; | |
1da177e4 LT |
3043 | } else { |
3044 | int val = *valp; | |
3045 | unsigned long lval; | |
3046 | if (val < 0) { | |
00b7c339 | 3047 | *negp = true; |
9a5bc726 | 3048 | lval = -(unsigned long)val; |
1da177e4 | 3049 | } else { |
00b7c339 | 3050 | *negp = false; |
1da177e4 LT |
3051 | lval = (unsigned long)val; |
3052 | } | |
3053 | *lvalp = jiffies_to_msecs(lval); | |
3054 | } | |
3055 | return 0; | |
3056 | } | |
3057 | ||
3058 | /** | |
3059 | * proc_dointvec_jiffies - read a vector of integers as seconds | |
3060 | * @table: the sysctl table | |
3061 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
3062 | * @buffer: the user buffer |
3063 | * @lenp: the size of the user buffer | |
3064 | * @ppos: file position | |
3065 | * | |
3066 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
3067 | * values from/to the user buffer, treated as an ASCII string. | |
3068 | * The values read are assumed to be in seconds, and are converted into | |
3069 | * jiffies. | |
3070 | * | |
3071 | * Returns 0 on success. | |
3072 | */ | |
8d65af78 | 3073 | int proc_dointvec_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
3074 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3075 | { | |
8d65af78 | 3076 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4 LT |
3077 | do_proc_dointvec_jiffies_conv,NULL); |
3078 | } | |
3079 | ||
3080 | /** | |
3081 | * proc_dointvec_userhz_jiffies - read a vector of integers as 1/USER_HZ seconds | |
3082 | * @table: the sysctl table | |
3083 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
3084 | * @buffer: the user buffer |
3085 | * @lenp: the size of the user buffer | |
1e5d5331 | 3086 | * @ppos: pointer to the file position |
1da177e4 LT |
3087 | * |
3088 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
3089 | * values from/to the user buffer, treated as an ASCII string. | |
3090 | * The values read are assumed to be in 1/USER_HZ seconds, and | |
3091 | * are converted into jiffies. | |
3092 | * | |
3093 | * Returns 0 on success. | |
3094 | */ | |
8d65af78 | 3095 | int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
3096 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3097 | { | |
8d65af78 | 3098 | return do_proc_dointvec(table,write,buffer,lenp,ppos, |
1da177e4 LT |
3099 | do_proc_dointvec_userhz_jiffies_conv,NULL); |
3100 | } | |
3101 | ||
3102 | /** | |
3103 | * proc_dointvec_ms_jiffies - read a vector of integers as 1 milliseconds | |
3104 | * @table: the sysctl table | |
3105 | * @write: %TRUE if this is a write to the sysctl file | |
1da177e4 LT |
3106 | * @buffer: the user buffer |
3107 | * @lenp: the size of the user buffer | |
67be2dd1 MW |
3108 | * @ppos: file position |
3109 | * @ppos: the current position in the file | |
1da177e4 LT |
3110 | * |
3111 | * Reads/writes up to table->maxlen/sizeof(unsigned int) integer | |
3112 | * values from/to the user buffer, treated as an ASCII string. | |
3113 | * The values read are assumed to be in 1/1000 seconds, and | |
3114 | * are converted into jiffies. | |
3115 | * | |
3116 | * Returns 0 on success. | |
3117 | */ | |
8d65af78 | 3118 | int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
3119 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3120 | { | |
8d65af78 | 3121 | return do_proc_dointvec(table, write, buffer, lenp, ppos, |
1da177e4 LT |
3122 | do_proc_dointvec_ms_jiffies_conv, NULL); |
3123 | } | |
3124 | ||
8d65af78 | 3125 | static int proc_do_cad_pid(struct ctl_table *table, int write, |
9ec52099 CLG |
3126 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3127 | { | |
3128 | struct pid *new_pid; | |
3129 | pid_t tmp; | |
3130 | int r; | |
3131 | ||
6c5f3e7b | 3132 | tmp = pid_vnr(cad_pid); |
9ec52099 | 3133 | |
8d65af78 | 3134 | r = __do_proc_dointvec(&tmp, table, write, buffer, |
9ec52099 CLG |
3135 | lenp, ppos, NULL, NULL); |
3136 | if (r || !write) | |
3137 | return r; | |
3138 | ||
3139 | new_pid = find_get_pid(tmp); | |
3140 | if (!new_pid) | |
3141 | return -ESRCH; | |
3142 | ||
3143 | put_pid(xchg(&cad_pid, new_pid)); | |
3144 | return 0; | |
3145 | } | |
3146 | ||
9f977fb7 OP |
3147 | /** |
3148 | * proc_do_large_bitmap - read/write from/to a large bitmap | |
3149 | * @table: the sysctl table | |
3150 | * @write: %TRUE if this is a write to the sysctl file | |
3151 | * @buffer: the user buffer | |
3152 | * @lenp: the size of the user buffer | |
3153 | * @ppos: file position | |
3154 | * | |
3155 | * The bitmap is stored at table->data and the bitmap length (in bits) | |
3156 | * in table->maxlen. | |
3157 | * | |
3158 | * We use a range comma separated format (e.g. 1,3-4,10-10) so that | |
3159 | * large bitmaps may be represented in a compact manner. Writing into | |
3160 | * the file will clear the bitmap then update it with the given input. | |
3161 | * | |
3162 | * Returns 0 on success. | |
3163 | */ | |
3164 | int proc_do_large_bitmap(struct ctl_table *table, int write, | |
3165 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3166 | { | |
3167 | int err = 0; | |
3168 | bool first = 1; | |
3169 | size_t left = *lenp; | |
3170 | unsigned long bitmap_len = table->maxlen; | |
122ff243 | 3171 | unsigned long *bitmap = *(unsigned long **) table->data; |
9f977fb7 OP |
3172 | unsigned long *tmp_bitmap = NULL; |
3173 | char tr_a[] = { '-', ',', '\n' }, tr_b[] = { ',', '\n', 0 }, c; | |
3174 | ||
122ff243 | 3175 | if (!bitmap || !bitmap_len || !left || (*ppos && !write)) { |
9f977fb7 OP |
3176 | *lenp = 0; |
3177 | return 0; | |
3178 | } | |
3179 | ||
3180 | if (write) { | |
70f6cbb6 | 3181 | char *kbuf, *p; |
3116ad38 | 3182 | size_t skipped = 0; |
9f977fb7 | 3183 | |
3116ad38 | 3184 | if (left > PAGE_SIZE - 1) { |
9f977fb7 | 3185 | left = PAGE_SIZE - 1; |
3116ad38 ES |
3186 | /* How much of the buffer we'll skip this pass */ |
3187 | skipped = *lenp - left; | |
3188 | } | |
9f977fb7 | 3189 | |
70f6cbb6 AV |
3190 | p = kbuf = memdup_user_nul(buffer, left); |
3191 | if (IS_ERR(kbuf)) | |
3192 | return PTR_ERR(kbuf); | |
9f977fb7 | 3193 | |
475dae38 | 3194 | tmp_bitmap = bitmap_zalloc(bitmap_len, GFP_KERNEL); |
9f977fb7 | 3195 | if (!tmp_bitmap) { |
70f6cbb6 | 3196 | kfree(kbuf); |
9f977fb7 OP |
3197 | return -ENOMEM; |
3198 | } | |
70f6cbb6 | 3199 | proc_skip_char(&p, &left, '\n'); |
9f977fb7 OP |
3200 | while (!err && left) { |
3201 | unsigned long val_a, val_b; | |
3202 | bool neg; | |
3116ad38 | 3203 | size_t saved_left; |
9f977fb7 | 3204 | |
3116ad38 ES |
3205 | /* In case we stop parsing mid-number, we can reset */ |
3206 | saved_left = left; | |
70f6cbb6 | 3207 | err = proc_get_long(&p, &left, &val_a, &neg, tr_a, |
9f977fb7 | 3208 | sizeof(tr_a), &c); |
3116ad38 ES |
3209 | /* |
3210 | * If we consumed the entirety of a truncated buffer or | |
3211 | * only one char is left (may be a "-"), then stop here, | |
3212 | * reset, & come back for more. | |
3213 | */ | |
3214 | if ((left <= 1) && skipped) { | |
3215 | left = saved_left; | |
3216 | break; | |
3217 | } | |
3218 | ||
9f977fb7 OP |
3219 | if (err) |
3220 | break; | |
3221 | if (val_a >= bitmap_len || neg) { | |
3222 | err = -EINVAL; | |
3223 | break; | |
3224 | } | |
3225 | ||
3226 | val_b = val_a; | |
3227 | if (left) { | |
70f6cbb6 | 3228 | p++; |
9f977fb7 OP |
3229 | left--; |
3230 | } | |
3231 | ||
3232 | if (c == '-') { | |
70f6cbb6 | 3233 | err = proc_get_long(&p, &left, &val_b, |
9f977fb7 OP |
3234 | &neg, tr_b, sizeof(tr_b), |
3235 | &c); | |
3116ad38 ES |
3236 | /* |
3237 | * If we consumed all of a truncated buffer or | |
3238 | * then stop here, reset, & come back for more. | |
3239 | */ | |
3240 | if (!left && skipped) { | |
3241 | left = saved_left; | |
3242 | break; | |
3243 | } | |
3244 | ||
9f977fb7 OP |
3245 | if (err) |
3246 | break; | |
3247 | if (val_b >= bitmap_len || neg || | |
3248 | val_a > val_b) { | |
3249 | err = -EINVAL; | |
3250 | break; | |
3251 | } | |
3252 | if (left) { | |
70f6cbb6 | 3253 | p++; |
9f977fb7 OP |
3254 | left--; |
3255 | } | |
3256 | } | |
3257 | ||
5a04cca6 | 3258 | bitmap_set(tmp_bitmap, val_a, val_b - val_a + 1); |
9f977fb7 | 3259 | first = 0; |
70f6cbb6 | 3260 | proc_skip_char(&p, &left, '\n'); |
9f977fb7 | 3261 | } |
70f6cbb6 | 3262 | kfree(kbuf); |
3116ad38 | 3263 | left += skipped; |
9f977fb7 OP |
3264 | } else { |
3265 | unsigned long bit_a, bit_b = 0; | |
3266 | ||
3267 | while (left) { | |
3268 | bit_a = find_next_bit(bitmap, bitmap_len, bit_b); | |
3269 | if (bit_a >= bitmap_len) | |
3270 | break; | |
3271 | bit_b = find_next_zero_bit(bitmap, bitmap_len, | |
3272 | bit_a + 1) - 1; | |
3273 | ||
3274 | if (!first) { | |
3275 | err = proc_put_char(&buffer, &left, ','); | |
3276 | if (err) | |
3277 | break; | |
3278 | } | |
3279 | err = proc_put_long(&buffer, &left, bit_a, false); | |
3280 | if (err) | |
3281 | break; | |
3282 | if (bit_a != bit_b) { | |
3283 | err = proc_put_char(&buffer, &left, '-'); | |
3284 | if (err) | |
3285 | break; | |
3286 | err = proc_put_long(&buffer, &left, bit_b, false); | |
3287 | if (err) | |
3288 | break; | |
3289 | } | |
3290 | ||
3291 | first = 0; bit_b++; | |
3292 | } | |
3293 | if (!err) | |
3294 | err = proc_put_char(&buffer, &left, '\n'); | |
3295 | } | |
3296 | ||
3297 | if (!err) { | |
3298 | if (write) { | |
3299 | if (*ppos) | |
3300 | bitmap_or(bitmap, bitmap, tmp_bitmap, bitmap_len); | |
3301 | else | |
5a04cca6 | 3302 | bitmap_copy(bitmap, tmp_bitmap, bitmap_len); |
9f977fb7 | 3303 | } |
9f977fb7 OP |
3304 | *lenp -= left; |
3305 | *ppos += *lenp; | |
9f977fb7 | 3306 | } |
f9eb2fdd | 3307 | |
475dae38 | 3308 | bitmap_free(tmp_bitmap); |
f9eb2fdd | 3309 | return err; |
9f977fb7 OP |
3310 | } |
3311 | ||
55610500 | 3312 | #else /* CONFIG_PROC_SYSCTL */ |
1da177e4 | 3313 | |
8d65af78 | 3314 | int proc_dostring(struct ctl_table *table, int write, |
1da177e4 LT |
3315 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3316 | { | |
3317 | return -ENOSYS; | |
3318 | } | |
3319 | ||
8d65af78 | 3320 | int proc_dointvec(struct ctl_table *table, int write, |
1da177e4 | 3321 | void __user *buffer, size_t *lenp, loff_t *ppos) |
1da177e4 LT |
3322 | { |
3323 | return -ENOSYS; | |
3324 | } | |
3325 | ||
e7d316a0 SAK |
3326 | int proc_douintvec(struct ctl_table *table, int write, |
3327 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3328 | { | |
3329 | return -ENOSYS; | |
3330 | } | |
3331 | ||
8d65af78 | 3332 | int proc_dointvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
3333 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3334 | { | |
3335 | return -ENOSYS; | |
3336 | } | |
3337 | ||
61d9b56a LR |
3338 | int proc_douintvec_minmax(struct ctl_table *table, int write, |
3339 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3340 | { | |
3341 | return -ENOSYS; | |
3342 | } | |
3343 | ||
8d65af78 | 3344 | int proc_dointvec_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
3345 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3346 | { | |
3347 | return -ENOSYS; | |
3348 | } | |
3349 | ||
8d65af78 | 3350 | int proc_dointvec_userhz_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
3351 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3352 | { | |
3353 | return -ENOSYS; | |
3354 | } | |
3355 | ||
8d65af78 | 3356 | int proc_dointvec_ms_jiffies(struct ctl_table *table, int write, |
1da177e4 LT |
3357 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3358 | { | |
3359 | return -ENOSYS; | |
3360 | } | |
3361 | ||
8d65af78 | 3362 | int proc_doulongvec_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
3363 | void __user *buffer, size_t *lenp, loff_t *ppos) |
3364 | { | |
3365 | return -ENOSYS; | |
3366 | } | |
3367 | ||
d8217f07 | 3368 | int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int write, |
1da177e4 LT |
3369 | void __user *buffer, |
3370 | size_t *lenp, loff_t *ppos) | |
3371 | { | |
3372 | return -ENOSYS; | |
3373 | } | |
3374 | ||
0bc19985 SS |
3375 | int proc_do_large_bitmap(struct ctl_table *table, int write, |
3376 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
3377 | { | |
3378 | return -ENOSYS; | |
3379 | } | |
1da177e4 | 3380 | |
55610500 | 3381 | #endif /* CONFIG_PROC_SYSCTL */ |
1da177e4 | 3382 | |
a8e11e5c ED |
3383 | #if defined(CONFIG_SYSCTL) |
3384 | int proc_do_static_key(struct ctl_table *table, int write, | |
3385 | void __user *buffer, size_t *lenp, | |
3386 | loff_t *ppos) | |
492ecee8 | 3387 | { |
a8e11e5c ED |
3388 | struct static_key *key = (struct static_key *)table->data; |
3389 | static DEFINE_MUTEX(static_key_mutex); | |
3390 | int val, ret; | |
3391 | struct ctl_table tmp = { | |
3392 | .data = &val, | |
3393 | .maxlen = sizeof(val), | |
3394 | .mode = table->mode, | |
eec4844f MC |
3395 | .extra1 = SYSCTL_ZERO, |
3396 | .extra2 = SYSCTL_ONE, | |
a8e11e5c | 3397 | }; |
492ecee8 AS |
3398 | |
3399 | if (write && !capable(CAP_SYS_ADMIN)) | |
3400 | return -EPERM; | |
3401 | ||
a8e11e5c ED |
3402 | mutex_lock(&static_key_mutex); |
3403 | val = static_key_enabled(key); | |
492ecee8 AS |
3404 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
3405 | if (write && !ret) { | |
a8e11e5c ED |
3406 | if (val) |
3407 | static_key_enable(key); | |
492ecee8 | 3408 | else |
a8e11e5c | 3409 | static_key_disable(key); |
492ecee8 | 3410 | } |
a8e11e5c | 3411 | mutex_unlock(&static_key_mutex); |
492ecee8 AS |
3412 | return ret; |
3413 | } | |
3fcc5530 | 3414 | #endif |
1da177e4 LT |
3415 | /* |
3416 | * No sense putting this after each symbol definition, twice, | |
3417 | * exception granted :-) | |
3418 | */ | |
3419 | EXPORT_SYMBOL(proc_dointvec); | |
e7d316a0 | 3420 | EXPORT_SYMBOL(proc_douintvec); |
1da177e4 LT |
3421 | EXPORT_SYMBOL(proc_dointvec_jiffies); |
3422 | EXPORT_SYMBOL(proc_dointvec_minmax); | |
61d9b56a | 3423 | EXPORT_SYMBOL_GPL(proc_douintvec_minmax); |
1da177e4 LT |
3424 | EXPORT_SYMBOL(proc_dointvec_userhz_jiffies); |
3425 | EXPORT_SYMBOL(proc_dointvec_ms_jiffies); | |
3426 | EXPORT_SYMBOL(proc_dostring); | |
3427 | EXPORT_SYMBOL(proc_doulongvec_minmax); | |
3428 | EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax); | |
0bc19985 | 3429 | EXPORT_SYMBOL(proc_do_large_bitmap); |