]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - include/linux/sysctl.h
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] SERIAL: allow shared 8250_pnp interrupts
[mirror_ubuntu-bionic-kernel.git] / include / linux / sysctl.h
CommitLineData
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 */
eab03ac7 58 /* was CTL_PROC */
1da177e4
LT		 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 */
bebfa101 151 KERN_COMPAT_LOG=73, /* int: print compat layer messages */
23f78d4a 152 KERN_MAX_LOCK_DEPTH=74,
1da177e4
LT		 153};
154
155
bebfa101 156
1da177e4
LT		 157/* CTL_VM names: */
158enum
159{
160 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
161 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
162 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
163 VM_UNUSED4=4, /* Spare */
164 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
165 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
166 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
167 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
168 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
169 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
170 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
171 VM_DIRTY_RATIO=12, /* dirty_ratio */
172 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
173 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
174 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
175 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
176 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
177 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
178 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
179 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
180 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
181 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
182 VM_LAPTOP_MODE=23, /* vm laptop mode */
183 VM_BLOCK_DUMP=24, /* block dump mode */
184 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
185 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
186 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
187 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
9d0243bc 188 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */
8ad4b1fb 189 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */
2a11ff06
CL		 190 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
191 VM_ZONE_RECLAIM_INTERVAL=32, /* time period to wait after reclaim failure */
fadd8fbd 192 VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
e6e5494c 193 VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
1da177e4
LT		 194};
195
196
197/* CTL_NET names: */
198enum
199{
200 NET_CORE=1,
201 NET_ETHER=2,
202 NET_802=3,
203 NET_UNIX=4,
204 NET_IPV4=5,
205 NET_IPX=6,
206 NET_ATALK=7,
207 NET_NETROM=8,
208 NET_AX25=9,
209 NET_BRIDGE=10,
210 NET_ROSE=11,
211 NET_IPV6=12,
212 NET_X25=13,
213 NET_TR=14,
214 NET_DECNET=15,
215 NET_ECONET=16,
590232a7
ACM		 216 NET_SCTP=17,
217 NET_LLC=18,
9fb9cbb1 218 NET_NETFILTER=19,
e55d912f 219 NET_DCCP=20,
1da177e4
LT		 220};
221
222/* /proc/sys/kernel/random */
223enum
224{
225 RANDOM_POOLSIZE=1,
226 RANDOM_ENTROPY_COUNT=2,
227 RANDOM_READ_THRESH=3,
228 RANDOM_WRITE_THRESH=4,
229 RANDOM_BOOT_ID=5,
230 RANDOM_UUID=6
231};
232
233/* /proc/sys/kernel/pty */
234enum
235{
236 PTY_MAX=1,
237 PTY_NR=2
238};
239
240/* /proc/sys/bus/isa */
241enum
242{
243 BUS_ISA_MEM_BASE=1,
244 BUS_ISA_PORT_BASE=2,
245 BUS_ISA_PORT_SHIFT=3
246};
247
248/* /proc/sys/net/core */
249enum
250{
251 NET_CORE_WMEM_MAX=1,
252 NET_CORE_RMEM_MAX=2,
253 NET_CORE_WMEM_DEFAULT=3,
254 NET_CORE_RMEM_DEFAULT=4,
255/* was NET_CORE_DESTROY_DELAY */
256 NET_CORE_MAX_BACKLOG=6,
257 NET_CORE_FASTROUTE=7,
258 NET_CORE_MSG_COST=8,
259 NET_CORE_MSG_BURST=9,
260 NET_CORE_OPTMEM_MAX=10,
261 NET_CORE_HOT_LIST_LENGTH=11,
262 NET_CORE_DIVERT_VERSION=12,
263 NET_CORE_NO_CONG_THRESH=13,
264 NET_CORE_NO_CONG=14,
265 NET_CORE_LO_CONG=15,
266 NET_CORE_MOD_CONG=16,
267 NET_CORE_DEV_WEIGHT=17,
268 NET_CORE_SOMAXCONN=18,
51b0bded 269 NET_CORE_BUDGET=19,
f8cd5488
JHS		 270 NET_CORE_AEVENT_ETIME=20,
271 NET_CORE_AEVENT_RSEQTH=21,
1da177e4
LT		 272};
273
274/* /proc/sys/net/ethernet */
275
276/* /proc/sys/net/802 */
277
278/* /proc/sys/net/unix */
279
280enum
281{
282 NET_UNIX_DESTROY_DELAY=1,
283 NET_UNIX_DELETE_DELAY=2,
284 NET_UNIX_MAX_DGRAM_QLEN=3,
285};
286
9fb9cbb1
YK		 287/* /proc/sys/net/netfilter */
288enum
289{
290 NET_NF_CONNTRACK_MAX=1,
291 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
292 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
293 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
294 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
295 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
296 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
297 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
298 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
299 NET_NF_CONNTRACK_UDP_TIMEOUT=10,
300 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
301 NET_NF_CONNTRACK_ICMP_TIMEOUT=12,
302 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13,
303 NET_NF_CONNTRACK_BUCKETS=14,
304 NET_NF_CONNTRACK_LOG_INVALID=15,
305 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
306 NET_NF_CONNTRACK_TCP_LOOSE=17,
307 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18,
308 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19,
309 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
310 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
311 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
312 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
313 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
314 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
315 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
316 NET_NF_CONNTRACK_COUNT=27,
317 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28,
318 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
319 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
320 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
39a27a35 321 NET_NF_CONNTRACK_CHECKSUM=32,
9fb9cbb1
YK		 322};
323
1da177e4
LT		 324/* /proc/sys/net/ipv4 */
325enum
326{
327 /* v2.0 compatibile variables */
328 NET_IPV4_FORWARD=8,
329 NET_IPV4_DYNADDR=9,
330
331 NET_IPV4_CONF=16,
332 NET_IPV4_NEIGH=17,
333 NET_IPV4_ROUTE=18,
334 NET_IPV4_FIB_HASH=19,
335 NET_IPV4_NETFILTER=20,
336
337 NET_IPV4_TCP_TIMESTAMPS=33,
338 NET_IPV4_TCP_WINDOW_SCALING=34,
339 NET_IPV4_TCP_SACK=35,
340 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
341 NET_IPV4_DEFAULT_TTL=37,
342 NET_IPV4_AUTOCONFIG=38,
343 NET_IPV4_NO_PMTU_DISC=39,
344 NET_IPV4_TCP_SYN_RETRIES=40,
345 NET_IPV4_IPFRAG_HIGH_THRESH=41,
346 NET_IPV4_IPFRAG_LOW_THRESH=42,
347 NET_IPV4_IPFRAG_TIME=43,
348 NET_IPV4_TCP_MAX_KA_PROBES=44,
349 NET_IPV4_TCP_KEEPALIVE_TIME=45,
350 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
351 NET_IPV4_TCP_RETRIES1=47,
352 NET_IPV4_TCP_RETRIES2=48,
353 NET_IPV4_TCP_FIN_TIMEOUT=49,
354 NET_IPV4_IP_MASQ_DEBUG=50,
355 NET_TCP_SYNCOOKIES=51,
356 NET_TCP_STDURG=52,
357 NET_TCP_RFC1337=53,
358 NET_TCP_SYN_TAILDROP=54,
359 NET_TCP_MAX_SYN_BACKLOG=55,
360 NET_IPV4_LOCAL_PORT_RANGE=56,
361 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
362 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
363 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
364 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
365 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
366 NET_IPV4_ICMP_PARAMPROB_RATE=62,
367 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
368 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
369 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
370 NET_TCP_TW_RECYCLE=66,
371 NET_IPV4_ALWAYS_DEFRAG=67,
372 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
373 NET_IPV4_INET_PEER_THRESHOLD=69,
374 NET_IPV4_INET_PEER_MINTTL=70,
375 NET_IPV4_INET_PEER_MAXTTL=71,
376 NET_IPV4_INET_PEER_GC_MINTIME=72,
377 NET_IPV4_INET_PEER_GC_MAXTIME=73,
378 NET_TCP_ORPHAN_RETRIES=74,
379 NET_TCP_ABORT_ON_OVERFLOW=75,
380 NET_TCP_SYNACK_RETRIES=76,
381 NET_TCP_MAX_ORPHANS=77,
382 NET_TCP_MAX_TW_BUCKETS=78,
383 NET_TCP_FACK=79,
384 NET_TCP_REORDERING=80,
385 NET_TCP_ECN=81,
386 NET_TCP_DSACK=82,
387 NET_TCP_MEM=83,
388 NET_TCP_WMEM=84,
389 NET_TCP_RMEM=85,
390 NET_TCP_APP_WIN=86,
391 NET_TCP_ADV_WIN_SCALE=87,
392 NET_IPV4_NONLOCAL_BIND=88,
393 NET_IPV4_ICMP_RATELIMIT=89,
394 NET_IPV4_ICMP_RATEMASK=90,
395 NET_TCP_TW_REUSE=91,
396 NET_TCP_FRTO=92,
397 NET_TCP_LOW_LATENCY=93,
398 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
1da177e4
LT		 399 NET_IPV4_IGMP_MAX_MSF=96,
400 NET_TCP_NO_METRICS_SAVE=97,
1da177e4
LT		 401 NET_TCP_DEFAULT_WIN_SCALE=105,
402 NET_TCP_MODERATE_RCVBUF=106,
403 NET_TCP_TSO_WIN_DIVISOR=107,
404 NET_TCP_BIC_BETA=108,
1c2fb7f9 405 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
317a76f9 406 NET_TCP_CONG_CONTROL=110,
9772efb9 407 NET_TCP_ABC=111,
89cee8b1 408 NET_IPV4_IPFRAG_MAX_DIST=112,
5d424d5a
JH		 409 NET_TCP_MTU_PROBING=113,
410 NET_TCP_BASE_MSS=114,
15d99e02 411 NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115,
95937825 412 NET_TCP_DMA_COPYBREAK=116,
35089bb2 413 NET_TCP_SLOW_START_AFTER_IDLE=117,
1da177e4
LT		 414};
415
416enum {
417 NET_IPV4_ROUTE_FLUSH=1,
418 NET_IPV4_ROUTE_MIN_DELAY=2,
419 NET_IPV4_ROUTE_MAX_DELAY=3,
420 NET_IPV4_ROUTE_GC_THRESH=4,
421 NET_IPV4_ROUTE_MAX_SIZE=5,
422 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
423 NET_IPV4_ROUTE_GC_TIMEOUT=7,
424 NET_IPV4_ROUTE_GC_INTERVAL=8,
425 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
426 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
427 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
428 NET_IPV4_ROUTE_ERROR_COST=12,
429 NET_IPV4_ROUTE_ERROR_BURST=13,
430 NET_IPV4_ROUTE_GC_ELASTICITY=14,
431 NET_IPV4_ROUTE_MTU_EXPIRES=15,
432 NET_IPV4_ROUTE_MIN_PMTU=16,
433 NET_IPV4_ROUTE_MIN_ADVMSS=17,
434 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
435 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
436};
437
438enum
439{
440 NET_PROTO_CONF_ALL=-2,
441 NET_PROTO_CONF_DEFAULT=-3
442
443 /* And device ifindices ... */
444};
445
446enum
447{
448 NET_IPV4_CONF_FORWARDING=1,
449 NET_IPV4_CONF_MC_FORWARDING=2,
450 NET_IPV4_CONF_PROXY_ARP=3,
451 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
452 NET_IPV4_CONF_SECURE_REDIRECTS=5,
453 NET_IPV4_CONF_SEND_REDIRECTS=6,
454 NET_IPV4_CONF_SHARED_MEDIA=7,
455 NET_IPV4_CONF_RP_FILTER=8,
456 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
457 NET_IPV4_CONF_BOOTP_RELAY=10,
458 NET_IPV4_CONF_LOG_MARTIANS=11,
459 NET_IPV4_CONF_TAG=12,
460 NET_IPV4_CONF_ARPFILTER=13,
461 NET_IPV4_CONF_MEDIUM_ID=14,
462 NET_IPV4_CONF_NOXFRM=15,
463 NET_IPV4_CONF_NOPOLICY=16,
464 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
465 NET_IPV4_CONF_ARP_ANNOUNCE=18,
466 NET_IPV4_CONF_ARP_IGNORE=19,
8f937c60 467 NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
abd596a4 468 NET_IPV4_CONF_ARP_ACCEPT=21,
1da177e4
LT		 469 __NET_IPV4_CONF_MAX
470};
471
472/* /proc/sys/net/ipv4/netfilter */
473enum
474{
475 NET_IPV4_NF_CONNTRACK_MAX=1,
476 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
477 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
478 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
479 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
480 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
481 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
482 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
483 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
484 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
485 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
486 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
487 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
488 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
489 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
490 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
491 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
492 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
493 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
494 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
495 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
496 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
497 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
498 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
499 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
500 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
501 NET_IPV4_NF_CONNTRACK_COUNT=27,
39a27a35 502 NET_IPV4_NF_CONNTRACK_CHECKSUM=28,
1da177e4
LT		 503};
504
505/* /proc/sys/net/ipv6 */
506enum {
507 NET_IPV6_CONF=16,
508 NET_IPV6_NEIGH=17,
509 NET_IPV6_ROUTE=18,
510 NET_IPV6_ICMP=19,
511 NET_IPV6_BINDV6ONLY=20,
512 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
513 NET_IPV6_IP6FRAG_LOW_THRESH=22,
514 NET_IPV6_IP6FRAG_TIME=23,
515 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
516 NET_IPV6_MLD_MAX_MSF=25,
517};
518
519enum {
520 NET_IPV6_ROUTE_FLUSH=1,
521 NET_IPV6_ROUTE_GC_THRESH=2,
522 NET_IPV6_ROUTE_MAX_SIZE=3,
523 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
524 NET_IPV6_ROUTE_GC_TIMEOUT=5,
525 NET_IPV6_ROUTE_GC_INTERVAL=6,
526 NET_IPV6_ROUTE_GC_ELASTICITY=7,
527 NET_IPV6_ROUTE_MTU_EXPIRES=8,
528 NET_IPV6_ROUTE_MIN_ADVMSS=9,
529 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
530};
531
532enum {
533 NET_IPV6_FORWARDING=1,
534 NET_IPV6_HOP_LIMIT=2,
535 NET_IPV6_MTU=3,
536 NET_IPV6_ACCEPT_RA=4,
537 NET_IPV6_ACCEPT_REDIRECTS=5,
538 NET_IPV6_AUTOCONF=6,
539 NET_IPV6_DAD_TRANSMITS=7,
540 NET_IPV6_RTR_SOLICITS=8,
541 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
542 NET_IPV6_RTR_SOLICIT_DELAY=10,
543 NET_IPV6_USE_TEMPADDR=11,
544 NET_IPV6_TEMP_VALID_LFT=12,
545 NET_IPV6_TEMP_PREFERED_LFT=13,
546 NET_IPV6_REGEN_MAX_RETRY=14,
547 NET_IPV6_MAX_DESYNC_FACTOR=15,
548 NET_IPV6_MAX_ADDRESSES=16,
549 NET_IPV6_FORCE_MLD_VERSION=17,
65f5c7c1 550 NET_IPV6_ACCEPT_RA_DEFRTR=18,
c4fd30eb 551 NET_IPV6_ACCEPT_RA_PINFO=19,
930d6ff2 552 NET_IPV6_ACCEPT_RA_RTR_PREF=20,
52e16356 553 NET_IPV6_RTR_PROBE_INTERVAL=21,
09c884d4 554 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
1da177e4
LT		 555 __NET_IPV6_MAX
556};
557
558/* /proc/sys/net/ipv6/icmp */
559enum {
560 NET_IPV6_ICMP_RATELIMIT=1
561};
562
563/* /proc/sys/net/<protocol>/neigh/<dev> */
564enum {
565 NET_NEIGH_MCAST_SOLICIT=1,
566 NET_NEIGH_UCAST_SOLICIT=2,
567 NET_NEIGH_APP_SOLICIT=3,
568 NET_NEIGH_RETRANS_TIME=4,
569 NET_NEIGH_REACHABLE_TIME=5,
570 NET_NEIGH_DELAY_PROBE_TIME=6,
571 NET_NEIGH_GC_STALE_TIME=7,
572 NET_NEIGH_UNRES_QLEN=8,
573 NET_NEIGH_PROXY_QLEN=9,
574 NET_NEIGH_ANYCAST_DELAY=10,
575 NET_NEIGH_PROXY_DELAY=11,
576 NET_NEIGH_LOCKTIME=12,
577 NET_NEIGH_GC_INTERVAL=13,
578 NET_NEIGH_GC_THRESH1=14,
579 NET_NEIGH_GC_THRESH2=15,
580 NET_NEIGH_GC_THRESH3=16,
581 NET_NEIGH_RETRANS_TIME_MS=17,
582 NET_NEIGH_REACHABLE_TIME_MS=18,
583 __NET_NEIGH_MAX
584};
585
e55d912f
ACM		 586/* /proc/sys/net/dccp */
587enum {
588 NET_DCCP_DEFAULT=1,
589};
590
591/* /proc/sys/net/dccp/default */
592enum {
593 NET_DCCP_DEFAULT_SEQ_WINDOW = 1,
594 NET_DCCP_DEFAULT_RX_CCID = 2,
595 NET_DCCP_DEFAULT_TX_CCID = 3,
596 NET_DCCP_DEFAULT_ACK_RATIO = 4,
597 NET_DCCP_DEFAULT_SEND_ACKVEC = 5,
598 NET_DCCP_DEFAULT_SEND_NDP = 6,
599};
600
1da177e4
LT		 601/* /proc/sys/net/ipx */
602enum {
603 NET_IPX_PPROP_BROADCASTING=1,
604 NET_IPX_FORWARDING=2
605};
606
590232a7
ACM		 607/* /proc/sys/net/llc */
608enum {
609 NET_LLC2=1,
610 NET_LLC_STATION=2,
611};
612
613/* /proc/sys/net/llc/llc2 */
614enum {
615 NET_LLC2_TIMEOUT=1,
616};
617
618/* /proc/sys/net/llc/station */
619enum {
620 NET_LLC_STATION_ACK_TIMEOUT=1,
621};
622
623/* /proc/sys/net/llc/llc2/timeout */
624enum {
625 NET_LLC2_ACK_TIMEOUT=1,
626 NET_LLC2_P_TIMEOUT=2,
627 NET_LLC2_REJ_TIMEOUT=3,
628 NET_LLC2_BUSY_TIMEOUT=4,
629};
1da177e4
LT		 630
631/* /proc/sys/net/appletalk */
632enum {
633 NET_ATALK_AARP_EXPIRY_TIME=1,
634 NET_ATALK_AARP_TICK_TIME=2,
635 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
636 NET_ATALK_AARP_RESOLVE_TIME=4
637};
638
639
640/* /proc/sys/net/netrom */
641enum {
642 NET_NETROM_DEFAULT_PATH_QUALITY=1,
643 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
644 NET_NETROM_NETWORK_TTL_INITIALISER=3,
645 NET_NETROM_TRANSPORT_TIMEOUT=4,
646 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
647 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
648 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
649 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
650 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
651 NET_NETROM_ROUTING_CONTROL=10,
e21ce8c7
RB		 652 NET_NETROM_LINK_FAILS_COUNT=11,
653 NET_NETROM_RESET=12
1da177e4
LT		 654};
655
656/* /proc/sys/net/ax25 */
657enum {
658 NET_AX25_IP_DEFAULT_MODE=1,
659 NET_AX25_DEFAULT_MODE=2,
660 NET_AX25_BACKOFF_TYPE=3,
661 NET_AX25_CONNECT_MODE=4,
662 NET_AX25_STANDARD_WINDOW=5,
663 NET_AX25_EXTENDED_WINDOW=6,
664 NET_AX25_T1_TIMEOUT=7,
665 NET_AX25_T2_TIMEOUT=8,
666 NET_AX25_T3_TIMEOUT=9,
667 NET_AX25_IDLE_TIMEOUT=10,
668 NET_AX25_N2=11,
669 NET_AX25_PACLEN=12,
670 NET_AX25_PROTOCOL=13,
671 NET_AX25_DAMA_SLAVE_TIMEOUT=14
672};
673
674/* /proc/sys/net/rose */
675enum {
676 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
677 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
678 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
679 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
680 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
681 NET_ROSE_ROUTING_CONTROL=6,
682 NET_ROSE_LINK_FAIL_TIMEOUT=7,
683 NET_ROSE_MAX_VCS=8,
684 NET_ROSE_WINDOW_SIZE=9,
685 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
686};
687
688/* /proc/sys/net/x25 */
689enum {
690 NET_X25_RESTART_REQUEST_TIMEOUT=1,
691 NET_X25_CALL_REQUEST_TIMEOUT=2,
692 NET_X25_RESET_REQUEST_TIMEOUT=3,
693 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
694 NET_X25_ACK_HOLD_BACK_TIMEOUT=5
695};
696
697/* /proc/sys/net/token-ring */
698enum
699{
700 NET_TR_RIF_TIMEOUT=1
701};
702
703/* /proc/sys/net/decnet/ */
704enum {
705 NET_DECNET_NODE_TYPE = 1,
706 NET_DECNET_NODE_ADDRESS = 2,
707 NET_DECNET_NODE_NAME = 3,
708 NET_DECNET_DEFAULT_DEVICE = 4,
709 NET_DECNET_TIME_WAIT = 5,
710 NET_DECNET_DN_COUNT = 6,
711 NET_DECNET_DI_COUNT = 7,
712 NET_DECNET_DR_COUNT = 8,
713 NET_DECNET_DST_GC_INTERVAL = 9,
714 NET_DECNET_CONF = 10,
715 NET_DECNET_NO_FC_MAX_CWND = 11,
1f12bcc9
SW		 716 NET_DECNET_MEM = 12,
717 NET_DECNET_RMEM = 13,
718 NET_DECNET_WMEM = 14,
1da177e4
LT		 719 NET_DECNET_DEBUG_LEVEL = 255
720};
721
722/* /proc/sys/net/decnet/conf/<dev> */
723enum {
724 NET_DECNET_CONF_LOOPBACK = -2,
725 NET_DECNET_CONF_DDCMP = -3,
726 NET_DECNET_CONF_PPP = -4,
727 NET_DECNET_CONF_X25 = -5,
728 NET_DECNET_CONF_GRE = -6,
729 NET_DECNET_CONF_ETHER = -7
730
731 /* ... and ifindex of devices */
732};
733
734/* /proc/sys/net/decnet/conf/<dev>/ */
735enum {
736 NET_DECNET_CONF_DEV_PRIORITY = 1,
737 NET_DECNET_CONF_DEV_T1 = 2,
738 NET_DECNET_CONF_DEV_T2 = 3,
739 NET_DECNET_CONF_DEV_T3 = 4,
740 NET_DECNET_CONF_DEV_FORWARDING = 5,
741 NET_DECNET_CONF_DEV_BLKSIZE = 6,
742 NET_DECNET_CONF_DEV_STATE = 7
743};
744
745/* /proc/sys/net/sctp */
746enum {
747 NET_SCTP_RTO_INITIAL = 1,
748 NET_SCTP_RTO_MIN = 2,
749 NET_SCTP_RTO_MAX = 3,
750 NET_SCTP_RTO_ALPHA = 4,
751 NET_SCTP_RTO_BETA = 5,
752 NET_SCTP_VALID_COOKIE_LIFE = 6,
753 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
754 NET_SCTP_PATH_MAX_RETRANS = 8,
755 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
756 NET_SCTP_HB_INTERVAL = 10,
757 NET_SCTP_PRESERVE_ENABLE = 11,
758 NET_SCTP_MAX_BURST = 12,
759 NET_SCTP_ADDIP_ENABLE = 13,
760 NET_SCTP_PRSCTP_ENABLE = 14,
4eb701df 761 NET_SCTP_SNDBUF_POLICY = 15,
2f85a429 762 NET_SCTP_SACK_TIMEOUT = 16,
049b3ff5 763 NET_SCTP_RCVBUF_POLICY = 17,
1da177e4
LT		 764};
765
766/* /proc/sys/net/bridge */
767enum {
768 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
769 NET_BRIDGE_NF_CALL_IPTABLES = 2,
770 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
771 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
772};
773
1da177e4
LT		 774/* CTL_FS names: */
775enum
776{
777 FS_NRINODE=1, /* int:current number of allocated inodes */
778 FS_STATINODE=2,
779 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
780 FS_NRDQUOT=4, /* int:current number of allocated dquots */
781 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
782 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
783 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
784 FS_DENTRY=8,
785 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
786 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
787 FS_OVERFLOWUID=11, /* int: overflow UID */
788 FS_OVERFLOWGID=12, /* int: overflow GID */
789 FS_LEASES=13, /* int: leases enabled */
790 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
791 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
792 FS_DQSTATS=16, /* disc quota usage statistics and control */
793 FS_XFS=17, /* struct: control xfs parameters */
794 FS_AIO_NR=18, /* current system-wide number of aio requests */
795 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
0399cb08 796 FS_INOTIFY=20, /* inotify submenu */
1da177e4
LT		 797};
798
799/* /proc/sys/fs/quota/ */
800enum {
801 FS_DQ_LOOKUPS = 1,
802 FS_DQ_DROPS = 2,
803 FS_DQ_READS = 3,
804 FS_DQ_WRITES = 4,
805 FS_DQ_CACHE_HITS = 5,
806 FS_DQ_ALLOCATED = 6,
807 FS_DQ_FREE = 7,
808 FS_DQ_SYNCS = 8,
809 FS_DQ_WARNINGS = 9,
810};
811
812/* CTL_DEBUG names: */
813
814/* CTL_DEV names: */
815enum {
816 DEV_CDROM=1,
817 DEV_HWMON=2,
818 DEV_PARPORT=3,
819 DEV_RAID=4,
820 DEV_MAC_HID=5,
821 DEV_SCSI=6,
8c702e16 822 DEV_IPMI=7,
1da177e4
LT		 823};
824
825/* /proc/sys/dev/cdrom */
826enum {
827 DEV_CDROM_INFO=1,
828 DEV_CDROM_AUTOCLOSE=2,
829 DEV_CDROM_AUTOEJECT=3,
830 DEV_CDROM_DEBUG=4,
831 DEV_CDROM_LOCK=5,
832 DEV_CDROM_CHECK_MEDIA=6
833};
834
835/* /proc/sys/dev/parport */
836enum {
837 DEV_PARPORT_DEFAULT=-3
838};
839
840/* /proc/sys/dev/raid */
841enum {
842 DEV_RAID_SPEED_LIMIT_MIN=1,
843 DEV_RAID_SPEED_LIMIT_MAX=2
844};
845
846/* /proc/sys/dev/parport/default */
847enum {
848 DEV_PARPORT_DEFAULT_TIMESLICE=1,
849 DEV_PARPORT_DEFAULT_SPINTIME=2
850};
851
852/* /proc/sys/dev/parport/parport n */
853enum {
854 DEV_PARPORT_SPINTIME=1,
855 DEV_PARPORT_BASE_ADDR=2,
856 DEV_PARPORT_IRQ=3,
857 DEV_PARPORT_DMA=4,
858 DEV_PARPORT_MODES=5,
859 DEV_PARPORT_DEVICES=6,
860 DEV_PARPORT_AUTOPROBE=16
861};
862
863/* /proc/sys/dev/parport/parport n/devices/ */
864enum {
865 DEV_PARPORT_DEVICES_ACTIVE=-3,
866};
867
868/* /proc/sys/dev/parport/parport n/devices/device n */
869enum {
870 DEV_PARPORT_DEVICE_TIMESLICE=1,
871};
872
873/* /proc/sys/dev/mac_hid */
874enum {
875 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
876 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
877 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
878 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
879 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
880 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
881};
882
883/* /proc/sys/dev/scsi */
884enum {
885 DEV_SCSI_LOGGING_LEVEL=1,
886};
887
8c702e16
CM		 888/* /proc/sys/dev/ipmi */
889enum {
890 DEV_IPMI_POWEROFF_POWERCYCLE=1,
891};
892
1da177e4
LT		 893/* /proc/sys/abi */
894enum
895{
896 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
897 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
898 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
899 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
900 ABI_TRACE=5, /* tracing flags */
901 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
902};
903
904#ifdef __KERNEL__
d4ed803c 905#include <linux/list.h>
1da177e4
LT		 906
907extern void sysctl_init(void);
908
909typedef struct ctl_table ctl_table;
910
911typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
912 void __user *oldval, size_t __user *oldlenp,
913 void __user *newval, size_t newlen,
914 void **context);
915
916typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
917 void __user *buffer, size_t *lenp, loff_t *ppos);
918
919extern int proc_dostring(ctl_table *, int, struct file *,
920 void __user *, size_t *, loff_t *);
921extern int proc_dointvec(ctl_table *, int, struct file *,
922 void __user *, size_t *, loff_t *);
923extern int proc_dointvec_bset(ctl_table *, int, struct file *,
924 void __user *, size_t *, loff_t *);
925extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
926 void __user *, size_t *, loff_t *);
927extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
928 void __user *, size_t *, loff_t *);
929extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
930 void __user *, size_t *, loff_t *);
931extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *,
932 void __user *, size_t *, loff_t *);
933extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
934 void __user *, size_t *, loff_t *);
935extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
936 struct file *, void __user *, size_t *, loff_t *);
937
938extern int do_sysctl (int __user *name, int nlen,
939 void __user *oldval, size_t __user *oldlenp,
940 void __user *newval, size_t newlen);
941
942extern int do_sysctl_strategy (ctl_table *table,
943 int __user *name, int nlen,
944 void __user *oldval, size_t __user *oldlenp,
945 void __user *newval, size_t newlen, void ** context);
946
947extern ctl_handler sysctl_string;
948extern ctl_handler sysctl_intvec;
949extern ctl_handler sysctl_jiffies;
950extern ctl_handler sysctl_ms_jiffies;
951
952
953/*
954 * Register a set of sysctl names by calling register_sysctl_table
955 * with an initialised array of ctl_table's. An entry with zero
956 * ctl_name terminates the table. table->de will be set up by the
957 * registration and need not be initialised in advance.
958 *
959 * sysctl names can be mirrored automatically under /proc/sys. The
960 * procname supplied controls /proc naming.
961 *
962 * The table's mode will be honoured both for sys_sysctl(2) and
963 * proc-fs access.
964 *
965 * Leaf nodes in the sysctl tree will be represented by a single file
966 * under /proc; non-leaf nodes will be represented by directories. A
967 * null procname disables /proc mirroring at this node.
968 *
969 * sysctl(2) can automatically manage read and write requests through
970 * the sysctl table. The data and maxlen fields of the ctl_table
971 * struct enable minimal validation of the values being written to be
972 * performed, and the mode field allows minimal authentication.
973 *
974 * More sophisticated management can be enabled by the provision of a
975 * strategy routine with the table entry. This will be called before
976 * any automatic read or write of the data is performed.
977 *
978 * The strategy routine may return:
979 * <0: Error occurred (error is passed to user process)
980 * 0: OK - proceed with automatic read or write.
981 * >0: OK - read or write has been done by the strategy routine, so
982 * return immediately.
983 *
984 * There must be a proc_handler routine for any terminal nodes
985 * mirrored under /proc/sys (non-terminals are handled by a built-in
986 * directory handler). Several default handlers are available to
987 * cover common cases.
988 */
989
990/* A sysctl table is an array of struct ctl_table: */
991struct ctl_table
992{
993 int ctl_name; /* Binary ID */
994 const char *procname; /* Text ID for /proc/sys, or zero */
995 void *data;
996 int maxlen;
997 mode_t mode;
998 ctl_table *child;
999 proc_handler *proc_handler; /* Callback for text formatting */
1000 ctl_handler *strategy; /* Callback function for all r/w */
1001 struct proc_dir_entry *de; /* /proc control block */
1002 void *extra1;
1003 void *extra2;
1004};
1005
1006/* struct ctl_table_header is used to maintain dynamic lists of
1007 ctl_table trees. */
1008struct ctl_table_header
1009{
1010 ctl_table *ctl_table;
1011 struct list_head ctl_entry;
330d57fb
AV		 1012 int used;
1013 struct completion *unregistering;
1da177e4
LT		 1014};
1015
1016struct ctl_table_header * register_sysctl_table(ctl_table * table,
1017 int insert_at_head);
1018void unregister_sysctl_table(struct ctl_table_header * table);
1019
1020#else /* __KERNEL__ */
1021
1022#endif /* __KERNEL__ */
1023
1024#endif /* _LINUX_SYSCTL_H */
ubuntu-bionic-kernel mirror