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[net-next-2.6.git] / include / linux / sysctl.h
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1da177e4
LT		 1/*
2 * sysctl.h: General linux system control interface
3 *
4 * Begun 24 March 1995, Stephen Tweedie
5 *
6 ****************************************************************
7 ****************************************************************
8 **
9 ** The values in this file are exported to user space via
10 ** the sysctl() binary interface. However this interface
11 ** is unstable and deprecated and will be removed in the future.
12 ** For a stable interface use /proc/sys.
13 **
14 ****************************************************************
15 ****************************************************************
16 */
17
18#ifndef _LINUX_SYSCTL_H
19#define _LINUX_SYSCTL_H
20
21#include <linux/kernel.h>
22#include <linux/types.h>
1da177e4
LT		 23#include <linux/compiler.h>
24
25struct file;
330d57fb 26struct completion;
1da177e4
LT		 27
28#define CTL_MAXNAME 10 /* how many path components do we allow in a
29 call to sysctl? In other words, what is
30 the largest acceptable value for the nlen
31 member of a struct __sysctl_args to have? */
32
33struct __sysctl_args {
34 int __user *name;
35 int nlen;
36 void __user *oldval;
37 size_t __user *oldlenp;
38 void __user *newval;
39 size_t newlen;
40 unsigned long __unused[4];
41};
42
43/* Define sysctl names first */
44
45/* Top-level names: */
46
47/* For internal pattern-matching use only: */
48#ifdef __KERNEL__
49#define CTL_ANY -1 /* Matches any name */
50#define CTL_NONE 0
51#endif
52
53enum
54{
55 CTL_KERN=1, /* General kernel info and control */
56 CTL_VM=2, /* VM management */
57 CTL_NET=3, /* Networking */
58 CTL_PROC=4, /* Process info */
59 CTL_FS=5, /* Filesystems */
60 CTL_DEBUG=6, /* Debugging */
61 CTL_DEV=7, /* Devices */
62 CTL_BUS=8, /* Busses */
63 CTL_ABI=9, /* Binary emulation */
0399cb08 64 CTL_CPU=10 /* CPU stuff (speed scaling, etc) */
1da177e4
LT		 65};
66
67/* CTL_BUS names: */
68enum
69{
70 CTL_BUS_ISA=1 /* ISA */
71};
72
0399cb08 73/* /proc/sys/fs/inotify/ */
0eeca283
RL		 74enum
75{
0399cb08
RL		 76 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */
77 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */
78 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */
0eeca283
RL		 79};
80
1da177e4
LT		 81/* CTL_KERN names: */
82enum
83{
84 KERN_OSTYPE=1, /* string: system version */
85 KERN_OSRELEASE=2, /* string: system release */
86 KERN_OSREV=3, /* int: system revision */
87 KERN_VERSION=4, /* string: compile time info */
88 KERN_SECUREMASK=5, /* struct: maximum rights mask */
89 KERN_PROF=6, /* table: profiling information */
90 KERN_NODENAME=7,
91 KERN_DOMAINNAME=8,
92
93 KERN_CAP_BSET=14, /* int: capability bounding set */
94 KERN_PANIC=15, /* int: panic timeout */
95 KERN_REALROOTDEV=16, /* real root device to mount after initrd */
96
97 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
98 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
99 KERN_PRINTK=23, /* struct: control printk logging parameters */
100 KERN_NAMETRANS=24, /* Name translation */
101 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
102 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
103 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
104 KERN_MODPROBE=28,
105 KERN_SG_BIG_BUFF=29,
106 KERN_ACCT=30, /* BSD process accounting parameters */
107 KERN_PPC_L2CR=31, /* l2cr register on PPC */
108
109 KERN_RTSIGNR=32, /* Number of rt sigs queued */
110 KERN_RTSIGMAX=33, /* Max queuable */
111
112 KERN_SHMMAX=34, /* long: Maximum shared memory segment */
113 KERN_MSGMAX=35, /* int: Maximum size of a messege */
114 KERN_MSGMNB=36, /* int: Maximum message queue size */
115 KERN_MSGPOOL=37, /* int: Maximum system message pool size */
116 KERN_SYSRQ=38, /* int: Sysreq enable */
117 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
118 KERN_RANDOM=40, /* Random driver */
119 KERN_SHMALL=41, /* int: Maximum size of shared memory */
120 KERN_MSGMNI=42, /* int: msg queue identifiers */
121 KERN_SEM=43, /* struct: sysv semaphore limits */
122 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
123 KERN_SHMMNI=45, /* int: shm array identifiers */
124 KERN_OVERFLOWUID=46, /* int: overflow UID */
125 KERN_OVERFLOWGID=47, /* int: overflow GID */
126 KERN_SHMPATH=48, /* string: path to shm fs */
312c004d 127 KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */
1da177e4
LT		 128 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
129 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
130 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
131 KERN_TAINTED=53, /* int: various kernel tainted flags */
132 KERN_CADPID=54, /* int: PID of the process to notify on CAD */
133 KERN_PIDMAX=55, /* int: PID # limit */
134 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
135 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
136 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
137 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
138 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
139 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
140 KERN_PTY=62, /* dir: pty driver */
141 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
142 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
143 KERN_HZ_TIMER=65, /* int: hz timer on or off */
144 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
145 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
146 KERN_RANDOMIZE=68, /* int: randomize virtual address space */
d6e71144 147 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
951f22d5 148 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
c255d844 149 KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
d2b176ed 150 KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
1da177e4
LT		 151};
152
153
154/* CTL_VM names: */
155enum
156{
157 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
158 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
159 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
160 VM_UNUSED4=4, /* Spare */
161 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
162 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
163 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
164 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
165 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
166 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
167 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
168 VM_DIRTY_RATIO=12, /* dirty_ratio */
169 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
170 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
171 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
172 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
173 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
174 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
175 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
176 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
177 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
178 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
179 VM_LAPTOP_MODE=23, /* vm laptop mode */
180 VM_BLOCK_DUMP=24, /* block dump mode */
181 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
182 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
183 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
184 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
9d0243bc 185 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */
8ad4b1fb 186 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */
2a11ff06
CL		 187 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
188 VM_ZONE_RECLAIM_INTERVAL=32, /* time period to wait after reclaim failure */
1da177e4
LT		 189};
190
191
192/* CTL_NET names: */
193enum
194{
195 NET_CORE=1,
196 NET_ETHER=2,
197 NET_802=3,
198 NET_UNIX=4,
199 NET_IPV4=5,
200 NET_IPX=6,
201 NET_ATALK=7,
202 NET_NETROM=8,
203 NET_AX25=9,
204 NET_BRIDGE=10,
205 NET_ROSE=11,
206 NET_IPV6=12,
207 NET_X25=13,
208 NET_TR=14,
209 NET_DECNET=15,
210 NET_ECONET=16,
590232a7
ACM		 211 NET_SCTP=17,
212 NET_LLC=18,
9fb9cbb1 213 NET_NETFILTER=19,
1da177e4
LT		 214};
215
216/* /proc/sys/kernel/random */
217enum
218{
219 RANDOM_POOLSIZE=1,
220 RANDOM_ENTROPY_COUNT=2,
221 RANDOM_READ_THRESH=3,
222 RANDOM_WRITE_THRESH=4,
223 RANDOM_BOOT_ID=5,
224 RANDOM_UUID=6
225};
226
227/* /proc/sys/kernel/pty */
228enum
229{
230 PTY_MAX=1,
231 PTY_NR=2
232};
233
234/* /proc/sys/bus/isa */
235enum
236{
237 BUS_ISA_MEM_BASE=1,
238 BUS_ISA_PORT_BASE=2,
239 BUS_ISA_PORT_SHIFT=3
240};
241
242/* /proc/sys/net/core */
243enum
244{
245 NET_CORE_WMEM_MAX=1,
246 NET_CORE_RMEM_MAX=2,
247 NET_CORE_WMEM_DEFAULT=3,
248 NET_CORE_RMEM_DEFAULT=4,
249/* was NET_CORE_DESTROY_DELAY */
250 NET_CORE_MAX_BACKLOG=6,
251 NET_CORE_FASTROUTE=7,
252 NET_CORE_MSG_COST=8,
253 NET_CORE_MSG_BURST=9,
254 NET_CORE_OPTMEM_MAX=10,
255 NET_CORE_HOT_LIST_LENGTH=11,
256 NET_CORE_DIVERT_VERSION=12,
257 NET_CORE_NO_CONG_THRESH=13,
258 NET_CORE_NO_CONG=14,
259 NET_CORE_LO_CONG=15,
260 NET_CORE_MOD_CONG=16,
261 NET_CORE_DEV_WEIGHT=17,
262 NET_CORE_SOMAXCONN=18,
51b0bded 263 NET_CORE_BUDGET=19,
1da177e4
LT		 264};
265
266/* /proc/sys/net/ethernet */
267
268/* /proc/sys/net/802 */
269
270/* /proc/sys/net/unix */
271
272enum
273{
274 NET_UNIX_DESTROY_DELAY=1,
275 NET_UNIX_DELETE_DELAY=2,
276 NET_UNIX_MAX_DGRAM_QLEN=3,
277};
278
9fb9cbb1
YK		 279/* /proc/sys/net/netfilter */
280enum
281{
282 NET_NF_CONNTRACK_MAX=1,
283 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
284 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
285 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
286 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
287 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
288 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
289 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
290 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
291 NET_NF_CONNTRACK_UDP_TIMEOUT=10,
292 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
293 NET_NF_CONNTRACK_ICMP_TIMEOUT=12,
294 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13,
295 NET_NF_CONNTRACK_BUCKETS=14,
296 NET_NF_CONNTRACK_LOG_INVALID=15,
297 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
298 NET_NF_CONNTRACK_TCP_LOOSE=17,
299 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18,
300 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19,
301 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
302 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
303 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
304 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
305 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
306 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
307 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
308 NET_NF_CONNTRACK_COUNT=27,
309 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28,
310 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
311 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
312 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
313};
314
1da177e4
LT		 315/* /proc/sys/net/ipv4 */
316enum
317{
318 /* v2.0 compatibile variables */
319 NET_IPV4_FORWARD=8,
320 NET_IPV4_DYNADDR=9,
321
322 NET_IPV4_CONF=16,
323 NET_IPV4_NEIGH=17,
324 NET_IPV4_ROUTE=18,
325 NET_IPV4_FIB_HASH=19,
326 NET_IPV4_NETFILTER=20,
327
328 NET_IPV4_TCP_TIMESTAMPS=33,
329 NET_IPV4_TCP_WINDOW_SCALING=34,
330 NET_IPV4_TCP_SACK=35,
331 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
332 NET_IPV4_DEFAULT_TTL=37,
333 NET_IPV4_AUTOCONFIG=38,
334 NET_IPV4_NO_PMTU_DISC=39,
335 NET_IPV4_TCP_SYN_RETRIES=40,
336 NET_IPV4_IPFRAG_HIGH_THRESH=41,
337 NET_IPV4_IPFRAG_LOW_THRESH=42,
338 NET_IPV4_IPFRAG_TIME=43,
339 NET_IPV4_TCP_MAX_KA_PROBES=44,
340 NET_IPV4_TCP_KEEPALIVE_TIME=45,
341 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
342 NET_IPV4_TCP_RETRIES1=47,
343 NET_IPV4_TCP_RETRIES2=48,
344 NET_IPV4_TCP_FIN_TIMEOUT=49,
345 NET_IPV4_IP_MASQ_DEBUG=50,
346 NET_TCP_SYNCOOKIES=51,
347 NET_TCP_STDURG=52,
348 NET_TCP_RFC1337=53,
349 NET_TCP_SYN_TAILDROP=54,
350 NET_TCP_MAX_SYN_BACKLOG=55,
351 NET_IPV4_LOCAL_PORT_RANGE=56,
352 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
353 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
354 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
355 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
356 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
357 NET_IPV4_ICMP_PARAMPROB_RATE=62,
358 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
359 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
360 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
361 NET_TCP_TW_RECYCLE=66,
362 NET_IPV4_ALWAYS_DEFRAG=67,
363 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
364 NET_IPV4_INET_PEER_THRESHOLD=69,
365 NET_IPV4_INET_PEER_MINTTL=70,
366 NET_IPV4_INET_PEER_MAXTTL=71,
367 NET_IPV4_INET_PEER_GC_MINTIME=72,
368 NET_IPV4_INET_PEER_GC_MAXTIME=73,
369 NET_TCP_ORPHAN_RETRIES=74,
370 NET_TCP_ABORT_ON_OVERFLOW=75,
371 NET_TCP_SYNACK_RETRIES=76,
372 NET_TCP_MAX_ORPHANS=77,
373 NET_TCP_MAX_TW_BUCKETS=78,
374 NET_TCP_FACK=79,
375 NET_TCP_REORDERING=80,
376 NET_TCP_ECN=81,
377 NET_TCP_DSACK=82,
378 NET_TCP_MEM=83,
379 NET_TCP_WMEM=84,
380 NET_TCP_RMEM=85,
381 NET_TCP_APP_WIN=86,
382 NET_TCP_ADV_WIN_SCALE=87,
383 NET_IPV4_NONLOCAL_BIND=88,
384 NET_IPV4_ICMP_RATELIMIT=89,
385 NET_IPV4_ICMP_RATEMASK=90,
386 NET_TCP_TW_REUSE=91,
387 NET_TCP_FRTO=92,
388 NET_TCP_LOW_LATENCY=93,
389 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
1da177e4
LT		 390 NET_IPV4_IGMP_MAX_MSF=96,
391 NET_TCP_NO_METRICS_SAVE=97,
1da177e4
LT		 392 NET_TCP_DEFAULT_WIN_SCALE=105,
393 NET_TCP_MODERATE_RCVBUF=106,
394 NET_TCP_TSO_WIN_DIVISOR=107,
395 NET_TCP_BIC_BETA=108,
1c2fb7f9 396 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
317a76f9 397 NET_TCP_CONG_CONTROL=110,
9772efb9 398 NET_TCP_ABC=111,
89cee8b1 399 NET_IPV4_IPFRAG_MAX_DIST=112,
5d424d5a
JH		 400 NET_TCP_MTU_PROBING=113,
401 NET_TCP_BASE_MSS=114,
1da177e4
LT		 402};
403
404enum {
405 NET_IPV4_ROUTE_FLUSH=1,
406 NET_IPV4_ROUTE_MIN_DELAY=2,
407 NET_IPV4_ROUTE_MAX_DELAY=3,
408 NET_IPV4_ROUTE_GC_THRESH=4,
409 NET_IPV4_ROUTE_MAX_SIZE=5,
410 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
411 NET_IPV4_ROUTE_GC_TIMEOUT=7,
412 NET_IPV4_ROUTE_GC_INTERVAL=8,
413 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
414 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
415 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
416 NET_IPV4_ROUTE_ERROR_COST=12,
417 NET_IPV4_ROUTE_ERROR_BURST=13,
418 NET_IPV4_ROUTE_GC_ELASTICITY=14,
419 NET_IPV4_ROUTE_MTU_EXPIRES=15,
420 NET_IPV4_ROUTE_MIN_PMTU=16,
421 NET_IPV4_ROUTE_MIN_ADVMSS=17,
422 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
423 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
424};
425
426enum
427{
428 NET_PROTO_CONF_ALL=-2,
429 NET_PROTO_CONF_DEFAULT=-3
430
431 /* And device ifindices ... */
432};
433
434enum
435{
436 NET_IPV4_CONF_FORWARDING=1,
437 NET_IPV4_CONF_MC_FORWARDING=2,
438 NET_IPV4_CONF_PROXY_ARP=3,
439 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
440 NET_IPV4_CONF_SECURE_REDIRECTS=5,
441 NET_IPV4_CONF_SEND_REDIRECTS=6,
442 NET_IPV4_CONF_SHARED_MEDIA=7,
443 NET_IPV4_CONF_RP_FILTER=8,
444 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
445 NET_IPV4_CONF_BOOTP_RELAY=10,
446 NET_IPV4_CONF_LOG_MARTIANS=11,
447 NET_IPV4_CONF_TAG=12,
448 NET_IPV4_CONF_ARPFILTER=13,
449 NET_IPV4_CONF_MEDIUM_ID=14,
450 NET_IPV4_CONF_NOXFRM=15,
451 NET_IPV4_CONF_NOPOLICY=16,
452 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
453 NET_IPV4_CONF_ARP_ANNOUNCE=18,
454 NET_IPV4_CONF_ARP_IGNORE=19,
8f937c60 455 NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
1da177e4
LT		 456 __NET_IPV4_CONF_MAX
457};
458
459/* /proc/sys/net/ipv4/netfilter */
460enum
461{
462 NET_IPV4_NF_CONNTRACK_MAX=1,
463 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
464 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
465 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
466 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
467 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
468 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
469 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
470 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
471 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
472 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
473 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
474 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
475 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
476 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
477 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
478 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
479 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
480 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
481 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
482 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
483 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
484 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
485 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
486 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
487 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
488 NET_IPV4_NF_CONNTRACK_COUNT=27,
489};
490
491/* /proc/sys/net/ipv6 */
492enum {
493 NET_IPV6_CONF=16,
494 NET_IPV6_NEIGH=17,
495 NET_IPV6_ROUTE=18,
496 NET_IPV6_ICMP=19,
497 NET_IPV6_BINDV6ONLY=20,
498 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
499 NET_IPV6_IP6FRAG_LOW_THRESH=22,
500 NET_IPV6_IP6FRAG_TIME=23,
501 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
502 NET_IPV6_MLD_MAX_MSF=25,
503};
504
505enum {
506 NET_IPV6_ROUTE_FLUSH=1,
507 NET_IPV6_ROUTE_GC_THRESH=2,
508 NET_IPV6_ROUTE_MAX_SIZE=3,
509 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
510 NET_IPV6_ROUTE_GC_TIMEOUT=5,
511 NET_IPV6_ROUTE_GC_INTERVAL=6,
512 NET_IPV6_ROUTE_GC_ELASTICITY=7,
513 NET_IPV6_ROUTE_MTU_EXPIRES=8,
514 NET_IPV6_ROUTE_MIN_ADVMSS=9,
515 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
516};
517
518enum {
519 NET_IPV6_FORWARDING=1,
520 NET_IPV6_HOP_LIMIT=2,
521 NET_IPV6_MTU=3,
522 NET_IPV6_ACCEPT_RA=4,
523 NET_IPV6_ACCEPT_REDIRECTS=5,
524 NET_IPV6_AUTOCONF=6,
525 NET_IPV6_DAD_TRANSMITS=7,
526 NET_IPV6_RTR_SOLICITS=8,
527 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
528 NET_IPV6_RTR_SOLICIT_DELAY=10,
529 NET_IPV6_USE_TEMPADDR=11,
530 NET_IPV6_TEMP_VALID_LFT=12,
531 NET_IPV6_TEMP_PREFERED_LFT=13,
532 NET_IPV6_REGEN_MAX_RETRY=14,
533 NET_IPV6_MAX_DESYNC_FACTOR=15,
534 NET_IPV6_MAX_ADDRESSES=16,
535 NET_IPV6_FORCE_MLD_VERSION=17,
65f5c7c1 536 NET_IPV6_ACCEPT_RA_DEFRTR=18,
c4fd30eb 537 NET_IPV6_ACCEPT_RA_PINFO=19,
930d6ff2 538 NET_IPV6_ACCEPT_RA_RTR_PREF=20,
52e16356 539 NET_IPV6_RTR_PROBE_INTERVAL=21,
09c884d4 540 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
1da177e4
LT		 541 __NET_IPV6_MAX
542};
543
544/* /proc/sys/net/ipv6/icmp */
545enum {
546 NET_IPV6_ICMP_RATELIMIT=1
547};
548
549/* /proc/sys/net/<protocol>/neigh/<dev> */
550enum {
551 NET_NEIGH_MCAST_SOLICIT=1,
552 NET_NEIGH_UCAST_SOLICIT=2,
553 NET_NEIGH_APP_SOLICIT=3,
554 NET_NEIGH_RETRANS_TIME=4,
555 NET_NEIGH_REACHABLE_TIME=5,
556 NET_NEIGH_DELAY_PROBE_TIME=6,
557 NET_NEIGH_GC_STALE_TIME=7,
558 NET_NEIGH_UNRES_QLEN=8,
559 NET_NEIGH_PROXY_QLEN=9,
560 NET_NEIGH_ANYCAST_DELAY=10,
561 NET_NEIGH_PROXY_DELAY=11,
562 NET_NEIGH_LOCKTIME=12,
563 NET_NEIGH_GC_INTERVAL=13,
564 NET_NEIGH_GC_THRESH1=14,
565 NET_NEIGH_GC_THRESH2=15,
566 NET_NEIGH_GC_THRESH3=16,
567 NET_NEIGH_RETRANS_TIME_MS=17,
568 NET_NEIGH_REACHABLE_TIME_MS=18,
569 __NET_NEIGH_MAX
570};
571
572/* /proc/sys/net/ipx */
573enum {
574 NET_IPX_PPROP_BROADCASTING=1,
575 NET_IPX_FORWARDING=2
576};
577
590232a7
ACM		 578/* /proc/sys/net/llc */
579enum {
580 NET_LLC2=1,
581 NET_LLC_STATION=2,
582};
583
584/* /proc/sys/net/llc/llc2 */
585enum {
586 NET_LLC2_TIMEOUT=1,
587};
588
589/* /proc/sys/net/llc/station */
590enum {
591 NET_LLC_STATION_ACK_TIMEOUT=1,
592};
593
594/* /proc/sys/net/llc/llc2/timeout */
595enum {
596 NET_LLC2_ACK_TIMEOUT=1,
597 NET_LLC2_P_TIMEOUT=2,
598 NET_LLC2_REJ_TIMEOUT=3,
599 NET_LLC2_BUSY_TIMEOUT=4,
600};
1da177e4
LT		 601
602/* /proc/sys/net/appletalk */
603enum {
604 NET_ATALK_AARP_EXPIRY_TIME=1,
605 NET_ATALK_AARP_TICK_TIME=2,
606 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
607 NET_ATALK_AARP_RESOLVE_TIME=4
608};
609
610
611/* /proc/sys/net/netrom */
612enum {
613 NET_NETROM_DEFAULT_PATH_QUALITY=1,
614 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
615 NET_NETROM_NETWORK_TTL_INITIALISER=3,
616 NET_NETROM_TRANSPORT_TIMEOUT=4,
617 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
618 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
619 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
620 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
621 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
622 NET_NETROM_ROUTING_CONTROL=10,
e21ce8c7
RB		 623 NET_NETROM_LINK_FAILS_COUNT=11,
624 NET_NETROM_RESET=12
1da177e4
LT		 625};
626
627/* /proc/sys/net/ax25 */
628enum {
629 NET_AX25_IP_DEFAULT_MODE=1,
630 NET_AX25_DEFAULT_MODE=2,
631 NET_AX25_BACKOFF_TYPE=3,
632 NET_AX25_CONNECT_MODE=4,
633 NET_AX25_STANDARD_WINDOW=5,
634 NET_AX25_EXTENDED_WINDOW=6,
635 NET_AX25_T1_TIMEOUT=7,
636 NET_AX25_T2_TIMEOUT=8,
637 NET_AX25_T3_TIMEOUT=9,
638 NET_AX25_IDLE_TIMEOUT=10,
639 NET_AX25_N2=11,
640 NET_AX25_PACLEN=12,
641 NET_AX25_PROTOCOL=13,
642 NET_AX25_DAMA_SLAVE_TIMEOUT=14
643};
644
645/* /proc/sys/net/rose */
646enum {
647 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
648 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
649 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
650 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
651 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
652 NET_ROSE_ROUTING_CONTROL=6,
653 NET_ROSE_LINK_FAIL_TIMEOUT=7,
654 NET_ROSE_MAX_VCS=8,
655 NET_ROSE_WINDOW_SIZE=9,
656 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
657};
658
659/* /proc/sys/net/x25 */
660enum {
661 NET_X25_RESTART_REQUEST_TIMEOUT=1,
662 NET_X25_CALL_REQUEST_TIMEOUT=2,
663 NET_X25_RESET_REQUEST_TIMEOUT=3,
664 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
665 NET_X25_ACK_HOLD_BACK_TIMEOUT=5
666};
667
668/* /proc/sys/net/token-ring */
669enum
670{
671 NET_TR_RIF_TIMEOUT=1
672};
673
674/* /proc/sys/net/decnet/ */
675enum {
676 NET_DECNET_NODE_TYPE = 1,
677 NET_DECNET_NODE_ADDRESS = 2,
678 NET_DECNET_NODE_NAME = 3,
679 NET_DECNET_DEFAULT_DEVICE = 4,
680 NET_DECNET_TIME_WAIT = 5,
681 NET_DECNET_DN_COUNT = 6,
682 NET_DECNET_DI_COUNT = 7,
683 NET_DECNET_DR_COUNT = 8,
684 NET_DECNET_DST_GC_INTERVAL = 9,
685 NET_DECNET_CONF = 10,
686 NET_DECNET_NO_FC_MAX_CWND = 11,
1f12bcc9
SW		 687 NET_DECNET_MEM = 12,
688 NET_DECNET_RMEM = 13,
689 NET_DECNET_WMEM = 14,
1da177e4
LT		 690 NET_DECNET_DEBUG_LEVEL = 255
691};
692
693/* /proc/sys/net/decnet/conf/<dev> */
694enum {
695 NET_DECNET_CONF_LOOPBACK = -2,
696 NET_DECNET_CONF_DDCMP = -3,
697 NET_DECNET_CONF_PPP = -4,
698 NET_DECNET_CONF_X25 = -5,
699 NET_DECNET_CONF_GRE = -6,
700 NET_DECNET_CONF_ETHER = -7
701
702 /* ... and ifindex of devices */
703};
704
705/* /proc/sys/net/decnet/conf/<dev>/ */
706enum {
707 NET_DECNET_CONF_DEV_PRIORITY = 1,
708 NET_DECNET_CONF_DEV_T1 = 2,
709 NET_DECNET_CONF_DEV_T2 = 3,
710 NET_DECNET_CONF_DEV_T3 = 4,
711 NET_DECNET_CONF_DEV_FORWARDING = 5,
712 NET_DECNET_CONF_DEV_BLKSIZE = 6,
713 NET_DECNET_CONF_DEV_STATE = 7
714};
715
716/* /proc/sys/net/sctp */
717enum {
718 NET_SCTP_RTO_INITIAL = 1,
719 NET_SCTP_RTO_MIN = 2,
720 NET_SCTP_RTO_MAX = 3,
721 NET_SCTP_RTO_ALPHA = 4,
722 NET_SCTP_RTO_BETA = 5,
723 NET_SCTP_VALID_COOKIE_LIFE = 6,
724 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
725 NET_SCTP_PATH_MAX_RETRANS = 8,
726 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
727 NET_SCTP_HB_INTERVAL = 10,
728 NET_SCTP_PRESERVE_ENABLE = 11,
729 NET_SCTP_MAX_BURST = 12,
730 NET_SCTP_ADDIP_ENABLE = 13,
731 NET_SCTP_PRSCTP_ENABLE = 14,
4eb701df 732 NET_SCTP_SNDBUF_POLICY = 15,
2f85a429 733 NET_SCTP_SACK_TIMEOUT = 16,
049b3ff5 734 NET_SCTP_RCVBUF_POLICY = 17,
1da177e4
LT		 735};
736
737/* /proc/sys/net/bridge */
738enum {
739 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
740 NET_BRIDGE_NF_CALL_IPTABLES = 2,
741 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
742 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
743};
744
745/* CTL_PROC names: */
746
747/* CTL_FS names: */
748enum
749{
750 FS_NRINODE=1, /* int:current number of allocated inodes */
751 FS_STATINODE=2,
752 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
753 FS_NRDQUOT=4, /* int:current number of allocated dquots */
754 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
755 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
756 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
757 FS_DENTRY=8,
758 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
759 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
760 FS_OVERFLOWUID=11, /* int: overflow UID */
761 FS_OVERFLOWGID=12, /* int: overflow GID */
762 FS_LEASES=13, /* int: leases enabled */
763 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
764 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
765 FS_DQSTATS=16, /* disc quota usage statistics and control */
766 FS_XFS=17, /* struct: control xfs parameters */
767 FS_AIO_NR=18, /* current system-wide number of aio requests */
768 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
0399cb08 769 FS_INOTIFY=20, /* inotify submenu */
1da177e4
LT		 770};
771
772/* /proc/sys/fs/quota/ */
773enum {
774 FS_DQ_LOOKUPS = 1,
775 FS_DQ_DROPS = 2,
776 FS_DQ_READS = 3,
777 FS_DQ_WRITES = 4,
778 FS_DQ_CACHE_HITS = 5,
779 FS_DQ_ALLOCATED = 6,
780 FS_DQ_FREE = 7,
781 FS_DQ_SYNCS = 8,
782 FS_DQ_WARNINGS = 9,
783};
784
785/* CTL_DEBUG names: */
786
787/* CTL_DEV names: */
788enum {
789 DEV_CDROM=1,
790 DEV_HWMON=2,
791 DEV_PARPORT=3,
792 DEV_RAID=4,
793 DEV_MAC_HID=5,
794 DEV_SCSI=6,
8c702e16 795 DEV_IPMI=7,
1da177e4
LT		 796};
797
798/* /proc/sys/dev/cdrom */
799enum {
800 DEV_CDROM_INFO=1,
801 DEV_CDROM_AUTOCLOSE=2,
802 DEV_CDROM_AUTOEJECT=3,
803 DEV_CDROM_DEBUG=4,
804 DEV_CDROM_LOCK=5,
805 DEV_CDROM_CHECK_MEDIA=6
806};
807
808/* /proc/sys/dev/parport */
809enum {
810 DEV_PARPORT_DEFAULT=-3
811};
812
813/* /proc/sys/dev/raid */
814enum {
815 DEV_RAID_SPEED_LIMIT_MIN=1,
816 DEV_RAID_SPEED_LIMIT_MAX=2
817};
818
819/* /proc/sys/dev/parport/default */
820enum {
821 DEV_PARPORT_DEFAULT_TIMESLICE=1,
822 DEV_PARPORT_DEFAULT_SPINTIME=2
823};
824
825/* /proc/sys/dev/parport/parport n */
826enum {
827 DEV_PARPORT_SPINTIME=1,
828 DEV_PARPORT_BASE_ADDR=2,
829 DEV_PARPORT_IRQ=3,
830 DEV_PARPORT_DMA=4,
831 DEV_PARPORT_MODES=5,
832 DEV_PARPORT_DEVICES=6,
833 DEV_PARPORT_AUTOPROBE=16
834};
835
836/* /proc/sys/dev/parport/parport n/devices/ */
837enum {
838 DEV_PARPORT_DEVICES_ACTIVE=-3,
839};
840
841/* /proc/sys/dev/parport/parport n/devices/device n */
842enum {
843 DEV_PARPORT_DEVICE_TIMESLICE=1,
844};
845
846/* /proc/sys/dev/mac_hid */
847enum {
848 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
849 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
850 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
851 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
852 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
853 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
854};
855
856/* /proc/sys/dev/scsi */
857enum {
858 DEV_SCSI_LOGGING_LEVEL=1,
859};
860
8c702e16
CM		 861/* /proc/sys/dev/ipmi */
862enum {
863 DEV_IPMI_POWEROFF_POWERCYCLE=1,
864};
865
1da177e4
LT		 866/* /proc/sys/abi */
867enum
868{
869 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
870 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
871 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
872 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
873 ABI_TRACE=5, /* tracing flags */
874 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
875};
876
877#ifdef __KERNEL__
d4ed803c 878#include <linux/list.h>
1da177e4
LT		 879
880extern void sysctl_init(void);
881
882typedef struct ctl_table ctl_table;
883
884typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
885 void __user *oldval, size_t __user *oldlenp,
886 void __user *newval, size_t newlen,
887 void **context);
888
889typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
890 void __user *buffer, size_t *lenp, loff_t *ppos);
891
892extern int proc_dostring(ctl_table *, int, struct file *,
893 void __user *, size_t *, loff_t *);
894extern int proc_dointvec(ctl_table *, int, struct file *,
895 void __user *, size_t *, loff_t *);
896extern int proc_dointvec_bset(ctl_table *, int, struct file *,
897 void __user *, size_t *, loff_t *);
898extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
899 void __user *, size_t *, loff_t *);
900extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
901 void __user *, size_t *, loff_t *);
902extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
903 void __user *, size_t *, loff_t *);
904extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *,
905 void __user *, size_t *, loff_t *);
906extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
907 void __user *, size_t *, loff_t *);
908extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
909 struct file *, void __user *, size_t *, loff_t *);
910
911extern int do_sysctl (int __user *name, int nlen,
912 void __user *oldval, size_t __user *oldlenp,
913 void __user *newval, size_t newlen);
914
915extern int do_sysctl_strategy (ctl_table *table,
916 int __user *name, int nlen,
917 void __user *oldval, size_t __user *oldlenp,
918 void __user *newval, size_t newlen, void ** context);
919
920extern ctl_handler sysctl_string;
921extern ctl_handler sysctl_intvec;
922extern ctl_handler sysctl_jiffies;
923extern ctl_handler sysctl_ms_jiffies;
924
925
926/*
927 * Register a set of sysctl names by calling register_sysctl_table
928 * with an initialised array of ctl_table's. An entry with zero
929 * ctl_name terminates the table. table->de will be set up by the
930 * registration and need not be initialised in advance.
931 *
932 * sysctl names can be mirrored automatically under /proc/sys. The
933 * procname supplied controls /proc naming.
934 *
935 * The table's mode will be honoured both for sys_sysctl(2) and
936 * proc-fs access.
937 *
938 * Leaf nodes in the sysctl tree will be represented by a single file
939 * under /proc; non-leaf nodes will be represented by directories. A
940 * null procname disables /proc mirroring at this node.
941 *
942 * sysctl(2) can automatically manage read and write requests through
943 * the sysctl table. The data and maxlen fields of the ctl_table
944 * struct enable minimal validation of the values being written to be
945 * performed, and the mode field allows minimal authentication.
946 *
947 * More sophisticated management can be enabled by the provision of a
948 * strategy routine with the table entry. This will be called before
949 * any automatic read or write of the data is performed.
950 *
951 * The strategy routine may return:
952 * <0: Error occurred (error is passed to user process)
953 * 0: OK - proceed with automatic read or write.
954 * >0: OK - read or write has been done by the strategy routine, so
955 * return immediately.
956 *
957 * There must be a proc_handler routine for any terminal nodes
958 * mirrored under /proc/sys (non-terminals are handled by a built-in
959 * directory handler). Several default handlers are available to
960 * cover common cases.
961 */
962
963/* A sysctl table is an array of struct ctl_table: */
964struct ctl_table
965{
966 int ctl_name; /* Binary ID */
967 const char *procname; /* Text ID for /proc/sys, or zero */
968 void *data;
969 int maxlen;
970 mode_t mode;
971 ctl_table *child;
972 proc_handler *proc_handler; /* Callback for text formatting */
973 ctl_handler *strategy; /* Callback function for all r/w */
974 struct proc_dir_entry *de; /* /proc control block */
975 void *extra1;
976 void *extra2;
977};
978
979/* struct ctl_table_header is used to maintain dynamic lists of
980 ctl_table trees. */
981struct ctl_table_header
982{
983 ctl_table *ctl_table;
984 struct list_head ctl_entry;
330d57fb
AV		 985 int used;
986 struct completion *unregistering;
1da177e4
LT		 987};
988
989struct ctl_table_header * register_sysctl_table(ctl_table * table,
990 int insert_at_head);
991void unregister_sysctl_table(struct ctl_table_header * table);
992
993#else /* __KERNEL__ */
994
995#endif /* __KERNEL__ */
996
997#endif /* _LINUX_SYSCTL_H */
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