?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge branch 'cfq-2.6.33' into for-2.6.33
[linux-2.6/next.git] / include / linux / sysctl.h
blob1e4743ee6831039d8b6d8e5773d7f5eebafcd33d
1 /*
2 * sysctl.h: General linux system control interface
3 *
4 * Begun 24 March 1995, Stephen Tweedie
5 *
6 ****************************************************************
7 ****************************************************************
8 **
9 ** WARNING:
10 ** The values in this file are exported to user space via
11 ** the sysctl() binary interface. Do *NOT* change the
12 ** numbering of any existing values here, and do not change
13 ** any numbers within any one set of values. If you have to
14 ** redefine an existing interface, use a new number for it.
15 ** The kernel will then return -ENOTDIR to any application using
16 ** the old binary interface.
17 **
18 ** For new interfaces unless you really need a binary number
19 ** please use CTL_UNNUMBERED.
20 **
21 ****************************************************************
22 ****************************************************************
23 */
24
25 #ifndef _LINUX_SYSCTL_H
26 #define _LINUX_SYSCTL_H
27
28 #include <linux/kernel.h>
29 #include <linux/types.h>
30 #include <linux/compiler.h>
31
32 struct completion;
33
34 #define CTL_MAXNAME 10 /* how many path components do we allow in a
35 call to sysctl? In other words, what is
36 the largest acceptable value for the nlen
37 member of a struct __sysctl_args to have? */
38
39 struct __sysctl_args {
40 int __user *name;
41 int nlen;
42 void __user *oldval;
43 size_t __user *oldlenp;
44 void __user *newval;
45 size_t newlen;
46 unsigned long __unused[4];
47 };
48
49 /* Define sysctl names first */
50
51 /* Top-level names: */
52
53 /* For internal pattern-matching use only: */
54 #ifdef __KERNEL__
55 #define CTL_NONE 0
56 #define CTL_UNNUMBERED CTL_NONE /* sysctl without a binary number */
57 #endif
58
59 enum
60 {
61 CTL_KERN=1, /* General kernel info and control */
62 CTL_VM=2, /* VM management */
63 CTL_NET=3, /* Networking */
64 CTL_PROC=4, /* removal breaks strace(1) compilation */
65 CTL_FS=5, /* Filesystems */
66 CTL_DEBUG=6, /* Debugging */
67 CTL_DEV=7, /* Devices */
68 CTL_BUS=8, /* Busses */
69 CTL_ABI=9, /* Binary emulation */
70 CTL_CPU=10, /* CPU stuff (speed scaling, etc) */
71 CTL_ARLAN=254, /* arlan wireless driver */
72 CTL_S390DBF=5677, /* s390 debug */
73 CTL_SUNRPC=7249, /* sunrpc debug */
74 CTL_PM=9899, /* frv power management */
75 CTL_FRV=9898, /* frv specific sysctls */
76 };
77
78 /* CTL_BUS names: */
79 enum
80 {
81 CTL_BUS_ISA=1 /* ISA */
82 };
83
84 /* /proc/sys/fs/inotify/ */
85 enum
86 {
87 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */
88 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */
89 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */
90 };
91
92 /* CTL_KERN names: */
93 enum
94 {
95 KERN_OSTYPE=1, /* string: system version */
96 KERN_OSRELEASE=2, /* string: system release */
97 KERN_OSREV=3, /* int: system revision */
98 KERN_VERSION=4, /* string: compile time info */
99 KERN_SECUREMASK=5, /* struct: maximum rights mask */
100 KERN_PROF=6, /* table: profiling information */
101 KERN_NODENAME=7,
102 KERN_DOMAINNAME=8,
103
104 KERN_PANIC=15, /* int: panic timeout */
105 KERN_REALROOTDEV=16, /* real root device to mount after initrd */
106
107 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
108 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
109 KERN_PRINTK=23, /* struct: control printk logging parameters */
110 KERN_NAMETRANS=24, /* Name translation */
111 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
112 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
113 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
114 KERN_MODPROBE=28,
115 KERN_SG_BIG_BUFF=29,
116 KERN_ACCT=30, /* BSD process accounting parameters */
117 KERN_PPC_L2CR=31, /* l2cr register on PPC */
118
119 KERN_RTSIGNR=32, /* Number of rt sigs queued */
120 KERN_RTSIGMAX=33, /* Max queuable */
121
122 KERN_SHMMAX=34, /* long: Maximum shared memory segment */
123 KERN_MSGMAX=35, /* int: Maximum size of a messege */
124 KERN_MSGMNB=36, /* int: Maximum message queue size */
125 KERN_MSGPOOL=37, /* int: Maximum system message pool size */
126 KERN_SYSRQ=38, /* int: Sysreq enable */
127 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
128 KERN_RANDOM=40, /* Random driver */
129 KERN_SHMALL=41, /* int: Maximum size of shared memory */
130 KERN_MSGMNI=42, /* int: msg queue identifiers */
131 KERN_SEM=43, /* struct: sysv semaphore limits */
132 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
133 KERN_SHMMNI=45, /* int: shm array identifiers */
134 KERN_OVERFLOWUID=46, /* int: overflow UID */
135 KERN_OVERFLOWGID=47, /* int: overflow GID */
136 KERN_SHMPATH=48, /* string: path to shm fs */
137 KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */
138 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
139 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
140 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
141 KERN_TAINTED=53, /* int: various kernel tainted flags */
142 KERN_CADPID=54, /* int: PID of the process to notify on CAD */
143 KERN_PIDMAX=55, /* int: PID # limit */
144 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
145 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
146 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
147 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
148 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
149 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
150 KERN_PTY=62, /* dir: pty driver */
151 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
152 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
153 KERN_HZ_TIMER=65, /* int: hz timer on or off */
154 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
155 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
156 KERN_RANDOMIZE=68, /* int: randomize virtual address space */
157 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
158 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
159 KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
160 KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
161 KERN_COMPAT_LOG=73, /* int: print compat layer messages */
162 KERN_MAX_LOCK_DEPTH=74,
163 KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */
164 KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
165 };
166
167
168
169 /* CTL_VM names: */
170 enum
171 {
172 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
173 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
174 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
175 VM_UNUSED4=4, /* Spare */
176 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
177 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
178 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
179 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
180 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
181 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
182 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
183 VM_DIRTY_RATIO=12, /* dirty_ratio */
184 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
185 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
186 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
187 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
188 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
189 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
190 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
191 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
192 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
193 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
194 VM_LAPTOP_MODE=23, /* vm laptop mode */
195 VM_BLOCK_DUMP=24, /* block dump mode */
196 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
197 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
198 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
199 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
200 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */
201 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */
202 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
203 VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */
204 VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
205 VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
206 VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */
207 };
208
209
210 /* CTL_NET names: */
211 enum
212 {
213 NET_CORE=1,
214 NET_ETHER=2,
215 NET_802=3,
216 NET_UNIX=4,
217 NET_IPV4=5,
218 NET_IPX=6,
219 NET_ATALK=7,
220 NET_NETROM=8,
221 NET_AX25=9,
222 NET_BRIDGE=10,
223 NET_ROSE=11,
224 NET_IPV6=12,
225 NET_X25=13,
226 NET_TR=14,
227 NET_DECNET=15,
228 NET_ECONET=16,
229 NET_SCTP=17,
230 NET_LLC=18,
231 NET_NETFILTER=19,
232 NET_DCCP=20,
233 NET_IRDA=412,
234 };
235
236 /* /proc/sys/kernel/random */
237 enum
238 {
239 RANDOM_POOLSIZE=1,
240 RANDOM_ENTROPY_COUNT=2,
241 RANDOM_READ_THRESH=3,
242 RANDOM_WRITE_THRESH=4,
243 RANDOM_BOOT_ID=5,
244 RANDOM_UUID=6
245 };
246
247 /* /proc/sys/kernel/pty */
248 enum
249 {
250 PTY_MAX=1,
251 PTY_NR=2
252 };
253
254 /* /proc/sys/bus/isa */
255 enum
256 {
257 BUS_ISA_MEM_BASE=1,
258 BUS_ISA_PORT_BASE=2,
259 BUS_ISA_PORT_SHIFT=3
260 };
261
262 /* /proc/sys/net/core */
263 enum
264 {
265 NET_CORE_WMEM_MAX=1,
266 NET_CORE_RMEM_MAX=2,
267 NET_CORE_WMEM_DEFAULT=3,
268 NET_CORE_RMEM_DEFAULT=4,
269 /* was NET_CORE_DESTROY_DELAY */
270 NET_CORE_MAX_BACKLOG=6,
271 NET_CORE_FASTROUTE=7,
272 NET_CORE_MSG_COST=8,
273 NET_CORE_MSG_BURST=9,
274 NET_CORE_OPTMEM_MAX=10,
275 NET_CORE_HOT_LIST_LENGTH=11,
276 NET_CORE_DIVERT_VERSION=12,
277 NET_CORE_NO_CONG_THRESH=13,
278 NET_CORE_NO_CONG=14,
279 NET_CORE_LO_CONG=15,
280 NET_CORE_MOD_CONG=16,
281 NET_CORE_DEV_WEIGHT=17,
282 NET_CORE_SOMAXCONN=18,
283 NET_CORE_BUDGET=19,
284 NET_CORE_AEVENT_ETIME=20,
285 NET_CORE_AEVENT_RSEQTH=21,
286 NET_CORE_WARNINGS=22,
287 };
288
289 /* /proc/sys/net/ethernet */
290
291 /* /proc/sys/net/802 */
292
293 /* /proc/sys/net/unix */
294
295 enum
296 {
297 NET_UNIX_DESTROY_DELAY=1,
298 NET_UNIX_DELETE_DELAY=2,
299 NET_UNIX_MAX_DGRAM_QLEN=3,
300 };
301
302 /* /proc/sys/net/netfilter */
303 enum
304 {
305 NET_NF_CONNTRACK_MAX=1,
306 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
307 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
308 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
309 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
310 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
311 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
312 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
313 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
314 NET_NF_CONNTRACK_UDP_TIMEOUT=10,
315 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
316 NET_NF_CONNTRACK_ICMP_TIMEOUT=12,
317 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13,
318 NET_NF_CONNTRACK_BUCKETS=14,
319 NET_NF_CONNTRACK_LOG_INVALID=15,
320 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
321 NET_NF_CONNTRACK_TCP_LOOSE=17,
322 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18,
323 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19,
324 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
325 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
326 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
327 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
328 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
329 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
330 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
331 NET_NF_CONNTRACK_COUNT=27,
332 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28,
333 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
334 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
335 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
336 NET_NF_CONNTRACK_CHECKSUM=32,
337 };
338
339 /* /proc/sys/net/ipv4 */
340 enum
341 {
342 /* v2.0 compatibile variables */
343 NET_IPV4_FORWARD=8,
344 NET_IPV4_DYNADDR=9,
345
346 NET_IPV4_CONF=16,
347 NET_IPV4_NEIGH=17,
348 NET_IPV4_ROUTE=18,
349 NET_IPV4_FIB_HASH=19,
350 NET_IPV4_NETFILTER=20,
351
352 NET_IPV4_TCP_TIMESTAMPS=33,
353 NET_IPV4_TCP_WINDOW_SCALING=34,
354 NET_IPV4_TCP_SACK=35,
355 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
356 NET_IPV4_DEFAULT_TTL=37,
357 NET_IPV4_AUTOCONFIG=38,
358 NET_IPV4_NO_PMTU_DISC=39,
359 NET_IPV4_TCP_SYN_RETRIES=40,
360 NET_IPV4_IPFRAG_HIGH_THRESH=41,
361 NET_IPV4_IPFRAG_LOW_THRESH=42,
362 NET_IPV4_IPFRAG_TIME=43,
363 NET_IPV4_TCP_MAX_KA_PROBES=44,
364 NET_IPV4_TCP_KEEPALIVE_TIME=45,
365 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
366 NET_IPV4_TCP_RETRIES1=47,
367 NET_IPV4_TCP_RETRIES2=48,
368 NET_IPV4_TCP_FIN_TIMEOUT=49,
369 NET_IPV4_IP_MASQ_DEBUG=50,
370 NET_TCP_SYNCOOKIES=51,
371 NET_TCP_STDURG=52,
372 NET_TCP_RFC1337=53,
373 NET_TCP_SYN_TAILDROP=54,
374 NET_TCP_MAX_SYN_BACKLOG=55,
375 NET_IPV4_LOCAL_PORT_RANGE=56,
376 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
377 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
378 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
379 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
380 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
381 NET_IPV4_ICMP_PARAMPROB_RATE=62,
382 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
383 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
384 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
385 NET_TCP_TW_RECYCLE=66,
386 NET_IPV4_ALWAYS_DEFRAG=67,
387 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
388 NET_IPV4_INET_PEER_THRESHOLD=69,
389 NET_IPV4_INET_PEER_MINTTL=70,
390 NET_IPV4_INET_PEER_MAXTTL=71,
391 NET_IPV4_INET_PEER_GC_MINTIME=72,
392 NET_IPV4_INET_PEER_GC_MAXTIME=73,
393 NET_TCP_ORPHAN_RETRIES=74,
394 NET_TCP_ABORT_ON_OVERFLOW=75,
395 NET_TCP_SYNACK_RETRIES=76,
396 NET_TCP_MAX_ORPHANS=77,
397 NET_TCP_MAX_TW_BUCKETS=78,
398 NET_TCP_FACK=79,
399 NET_TCP_REORDERING=80,
400 NET_TCP_ECN=81,
401 NET_TCP_DSACK=82,
402 NET_TCP_MEM=83,
403 NET_TCP_WMEM=84,
404 NET_TCP_RMEM=85,
405 NET_TCP_APP_WIN=86,
406 NET_TCP_ADV_WIN_SCALE=87,
407 NET_IPV4_NONLOCAL_BIND=88,
408 NET_IPV4_ICMP_RATELIMIT=89,
409 NET_IPV4_ICMP_RATEMASK=90,
410 NET_TCP_TW_REUSE=91,
411 NET_TCP_FRTO=92,
412 NET_TCP_LOW_LATENCY=93,
413 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
414 NET_IPV4_IGMP_MAX_MSF=96,
415 NET_TCP_NO_METRICS_SAVE=97,
416 NET_TCP_DEFAULT_WIN_SCALE=105,
417 NET_TCP_MODERATE_RCVBUF=106,
418 NET_TCP_TSO_WIN_DIVISOR=107,
419 NET_TCP_BIC_BETA=108,
420 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
421 NET_TCP_CONG_CONTROL=110,
422 NET_TCP_ABC=111,
423 NET_IPV4_IPFRAG_MAX_DIST=112,
424 NET_TCP_MTU_PROBING=113,
425 NET_TCP_BASE_MSS=114,
426 NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115,
427 NET_TCP_DMA_COPYBREAK=116,
428 NET_TCP_SLOW_START_AFTER_IDLE=117,
429 NET_CIPSOV4_CACHE_ENABLE=118,
430 NET_CIPSOV4_CACHE_BUCKET_SIZE=119,
431 NET_CIPSOV4_RBM_OPTFMT=120,
432 NET_CIPSOV4_RBM_STRICTVALID=121,
433 NET_TCP_AVAIL_CONG_CONTROL=122,
434 NET_TCP_ALLOWED_CONG_CONTROL=123,
435 NET_TCP_MAX_SSTHRESH=124,
436 NET_TCP_FRTO_RESPONSE=125,
437 };
438
439 enum {
440 NET_IPV4_ROUTE_FLUSH=1,
441 NET_IPV4_ROUTE_MIN_DELAY=2, /* obsolete since 2.6.25 */
442 NET_IPV4_ROUTE_MAX_DELAY=3, /* obsolete since 2.6.25 */
443 NET_IPV4_ROUTE_GC_THRESH=4,
444 NET_IPV4_ROUTE_MAX_SIZE=5,
445 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
446 NET_IPV4_ROUTE_GC_TIMEOUT=7,
447 NET_IPV4_ROUTE_GC_INTERVAL=8,
448 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
449 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
450 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
451 NET_IPV4_ROUTE_ERROR_COST=12,
452 NET_IPV4_ROUTE_ERROR_BURST=13,
453 NET_IPV4_ROUTE_GC_ELASTICITY=14,
454 NET_IPV4_ROUTE_MTU_EXPIRES=15,
455 NET_IPV4_ROUTE_MIN_PMTU=16,
456 NET_IPV4_ROUTE_MIN_ADVMSS=17,
457 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
458 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
459 };
460
461 enum
462 {
463 NET_PROTO_CONF_ALL=-2,
464 NET_PROTO_CONF_DEFAULT=-3
465
466 /* And device ifindices ... */
467 };
468
469 enum
470 {
471 NET_IPV4_CONF_FORWARDING=1,
472 NET_IPV4_CONF_MC_FORWARDING=2,
473 NET_IPV4_CONF_PROXY_ARP=3,
474 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
475 NET_IPV4_CONF_SECURE_REDIRECTS=5,
476 NET_IPV4_CONF_SEND_REDIRECTS=6,
477 NET_IPV4_CONF_SHARED_MEDIA=7,
478 NET_IPV4_CONF_RP_FILTER=8,
479 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
480 NET_IPV4_CONF_BOOTP_RELAY=10,
481 NET_IPV4_CONF_LOG_MARTIANS=11,
482 NET_IPV4_CONF_TAG=12,
483 NET_IPV4_CONF_ARPFILTER=13,
484 NET_IPV4_CONF_MEDIUM_ID=14,
485 NET_IPV4_CONF_NOXFRM=15,
486 NET_IPV4_CONF_NOPOLICY=16,
487 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
488 NET_IPV4_CONF_ARP_ANNOUNCE=18,
489 NET_IPV4_CONF_ARP_IGNORE=19,
490 NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
491 NET_IPV4_CONF_ARP_ACCEPT=21,
492 NET_IPV4_CONF_ARP_NOTIFY=22,
493 __NET_IPV4_CONF_MAX
494 };
495
496 /* /proc/sys/net/ipv4/netfilter */
497 enum
498 {
499 NET_IPV4_NF_CONNTRACK_MAX=1,
500 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
501 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
502 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
503 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
504 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
505 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
506 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
507 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
508 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
509 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
510 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
511 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
512 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
513 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
514 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
515 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
516 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
517 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
518 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
519 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
520 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
521 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
522 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
523 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
524 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
525 NET_IPV4_NF_CONNTRACK_COUNT=27,
526 NET_IPV4_NF_CONNTRACK_CHECKSUM=28,
527 };
528
529 /* /proc/sys/net/ipv6 */
530 enum {
531 NET_IPV6_CONF=16,
532 NET_IPV6_NEIGH=17,
533 NET_IPV6_ROUTE=18,
534 NET_IPV6_ICMP=19,
535 NET_IPV6_BINDV6ONLY=20,
536 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
537 NET_IPV6_IP6FRAG_LOW_THRESH=22,
538 NET_IPV6_IP6FRAG_TIME=23,
539 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
540 NET_IPV6_MLD_MAX_MSF=25,
541 };
542
543 enum {
544 NET_IPV6_ROUTE_FLUSH=1,
545 NET_IPV6_ROUTE_GC_THRESH=2,
546 NET_IPV6_ROUTE_MAX_SIZE=3,
547 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
548 NET_IPV6_ROUTE_GC_TIMEOUT=5,
549 NET_IPV6_ROUTE_GC_INTERVAL=6,
550 NET_IPV6_ROUTE_GC_ELASTICITY=7,
551 NET_IPV6_ROUTE_MTU_EXPIRES=8,
552 NET_IPV6_ROUTE_MIN_ADVMSS=9,
553 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
554 };
555
556 enum {
557 NET_IPV6_FORWARDING=1,
558 NET_IPV6_HOP_LIMIT=2,
559 NET_IPV6_MTU=3,
560 NET_IPV6_ACCEPT_RA=4,
561 NET_IPV6_ACCEPT_REDIRECTS=5,
562 NET_IPV6_AUTOCONF=6,
563 NET_IPV6_DAD_TRANSMITS=7,
564 NET_IPV6_RTR_SOLICITS=8,
565 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
566 NET_IPV6_RTR_SOLICIT_DELAY=10,
567 NET_IPV6_USE_TEMPADDR=11,
568 NET_IPV6_TEMP_VALID_LFT=12,
569 NET_IPV6_TEMP_PREFERED_LFT=13,
570 NET_IPV6_REGEN_MAX_RETRY=14,
571 NET_IPV6_MAX_DESYNC_FACTOR=15,
572 NET_IPV6_MAX_ADDRESSES=16,
573 NET_IPV6_FORCE_MLD_VERSION=17,
574 NET_IPV6_ACCEPT_RA_DEFRTR=18,
575 NET_IPV6_ACCEPT_RA_PINFO=19,
576 NET_IPV6_ACCEPT_RA_RTR_PREF=20,
577 NET_IPV6_RTR_PROBE_INTERVAL=21,
578 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
579 NET_IPV6_PROXY_NDP=23,
580 NET_IPV6_ACCEPT_SOURCE_ROUTE=25,
581 __NET_IPV6_MAX
582 };
583
584 /* /proc/sys/net/ipv6/icmp */
585 enum {
586 NET_IPV6_ICMP_RATELIMIT=1
587 };
588
589 /* /proc/sys/net/<protocol>/neigh/<dev> */
590 enum {
591 NET_NEIGH_MCAST_SOLICIT=1,
592 NET_NEIGH_UCAST_SOLICIT=2,
593 NET_NEIGH_APP_SOLICIT=3,
594 NET_NEIGH_RETRANS_TIME=4,
595 NET_NEIGH_REACHABLE_TIME=5,
596 NET_NEIGH_DELAY_PROBE_TIME=6,
597 NET_NEIGH_GC_STALE_TIME=7,
598 NET_NEIGH_UNRES_QLEN=8,
599 NET_NEIGH_PROXY_QLEN=9,
600 NET_NEIGH_ANYCAST_DELAY=10,
601 NET_NEIGH_PROXY_DELAY=11,
602 NET_NEIGH_LOCKTIME=12,
603 NET_NEIGH_GC_INTERVAL=13,
604 NET_NEIGH_GC_THRESH1=14,
605 NET_NEIGH_GC_THRESH2=15,
606 NET_NEIGH_GC_THRESH3=16,
607 NET_NEIGH_RETRANS_TIME_MS=17,
608 NET_NEIGH_REACHABLE_TIME_MS=18,
609 __NET_NEIGH_MAX
610 };
611
612 /* /proc/sys/net/dccp */
613 enum {
614 NET_DCCP_DEFAULT=1,
615 };
616
617 /* /proc/sys/net/ipx */
618 enum {
619 NET_IPX_PPROP_BROADCASTING=1,
620 NET_IPX_FORWARDING=2
621 };
622
623 /* /proc/sys/net/llc */
624 enum {
625 NET_LLC2=1,
626 NET_LLC_STATION=2,
627 };
628
629 /* /proc/sys/net/llc/llc2 */
630 enum {
631 NET_LLC2_TIMEOUT=1,
632 };
633
634 /* /proc/sys/net/llc/station */
635 enum {
636 NET_LLC_STATION_ACK_TIMEOUT=1,
637 };
638
639 /* /proc/sys/net/llc/llc2/timeout */
640 enum {
641 NET_LLC2_ACK_TIMEOUT=1,
642 NET_LLC2_P_TIMEOUT=2,
643 NET_LLC2_REJ_TIMEOUT=3,
644 NET_LLC2_BUSY_TIMEOUT=4,
645 };
646
647 /* /proc/sys/net/appletalk */
648 enum {
649 NET_ATALK_AARP_EXPIRY_TIME=1,
650 NET_ATALK_AARP_TICK_TIME=2,
651 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
652 NET_ATALK_AARP_RESOLVE_TIME=4
653 };
654
655
656 /* /proc/sys/net/netrom */
657 enum {
658 NET_NETROM_DEFAULT_PATH_QUALITY=1,
659 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
660 NET_NETROM_NETWORK_TTL_INITIALISER=3,
661 NET_NETROM_TRANSPORT_TIMEOUT=4,
662 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
663 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
664 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
665 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
666 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
667 NET_NETROM_ROUTING_CONTROL=10,
668 NET_NETROM_LINK_FAILS_COUNT=11,
669 NET_NETROM_RESET=12
670 };
671
672 /* /proc/sys/net/ax25 */
673 enum {
674 NET_AX25_IP_DEFAULT_MODE=1,
675 NET_AX25_DEFAULT_MODE=2,
676 NET_AX25_BACKOFF_TYPE=3,
677 NET_AX25_CONNECT_MODE=4,
678 NET_AX25_STANDARD_WINDOW=5,
679 NET_AX25_EXTENDED_WINDOW=6,
680 NET_AX25_T1_TIMEOUT=7,
681 NET_AX25_T2_TIMEOUT=8,
682 NET_AX25_T3_TIMEOUT=9,
683 NET_AX25_IDLE_TIMEOUT=10,
684 NET_AX25_N2=11,
685 NET_AX25_PACLEN=12,
686 NET_AX25_PROTOCOL=13,
687 NET_AX25_DAMA_SLAVE_TIMEOUT=14
688 };
689
690 /* /proc/sys/net/rose */
691 enum {
692 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
693 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
694 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
695 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
696 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
697 NET_ROSE_ROUTING_CONTROL=6,
698 NET_ROSE_LINK_FAIL_TIMEOUT=7,
699 NET_ROSE_MAX_VCS=8,
700 NET_ROSE_WINDOW_SIZE=9,
701 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
702 };
703
704 /* /proc/sys/net/x25 */
705 enum {
706 NET_X25_RESTART_REQUEST_TIMEOUT=1,
707 NET_X25_CALL_REQUEST_TIMEOUT=2,
708 NET_X25_RESET_REQUEST_TIMEOUT=3,
709 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
710 NET_X25_ACK_HOLD_BACK_TIMEOUT=5,
711 NET_X25_FORWARD=6
712 };
713
714 /* /proc/sys/net/token-ring */
715 enum
716 {
717 NET_TR_RIF_TIMEOUT=1
718 };
719
720 /* /proc/sys/net/decnet/ */
721 enum {
722 NET_DECNET_NODE_TYPE = 1,
723 NET_DECNET_NODE_ADDRESS = 2,
724 NET_DECNET_NODE_NAME = 3,
725 NET_DECNET_DEFAULT_DEVICE = 4,
726 NET_DECNET_TIME_WAIT = 5,
727 NET_DECNET_DN_COUNT = 6,
728 NET_DECNET_DI_COUNT = 7,
729 NET_DECNET_DR_COUNT = 8,
730 NET_DECNET_DST_GC_INTERVAL = 9,
731 NET_DECNET_CONF = 10,
732 NET_DECNET_NO_FC_MAX_CWND = 11,
733 NET_DECNET_MEM = 12,
734 NET_DECNET_RMEM = 13,
735 NET_DECNET_WMEM = 14,
736 NET_DECNET_DEBUG_LEVEL = 255
737 };
738
739 /* /proc/sys/net/decnet/conf/<dev> */
740 enum {
741 NET_DECNET_CONF_LOOPBACK = -2,
742 NET_DECNET_CONF_DDCMP = -3,
743 NET_DECNET_CONF_PPP = -4,
744 NET_DECNET_CONF_X25 = -5,
745 NET_DECNET_CONF_GRE = -6,
746 NET_DECNET_CONF_ETHER = -7
747
748 /* ... and ifindex of devices */
749 };
750
751 /* /proc/sys/net/decnet/conf/<dev>/ */
752 enum {
753 NET_DECNET_CONF_DEV_PRIORITY = 1,
754 NET_DECNET_CONF_DEV_T1 = 2,
755 NET_DECNET_CONF_DEV_T2 = 3,
756 NET_DECNET_CONF_DEV_T3 = 4,
757 NET_DECNET_CONF_DEV_FORWARDING = 5,
758 NET_DECNET_CONF_DEV_BLKSIZE = 6,
759 NET_DECNET_CONF_DEV_STATE = 7
760 };
761
762 /* /proc/sys/net/sctp */
763 enum {
764 NET_SCTP_RTO_INITIAL = 1,
765 NET_SCTP_RTO_MIN = 2,
766 NET_SCTP_RTO_MAX = 3,
767 NET_SCTP_RTO_ALPHA = 4,
768 NET_SCTP_RTO_BETA = 5,
769 NET_SCTP_VALID_COOKIE_LIFE = 6,
770 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
771 NET_SCTP_PATH_MAX_RETRANS = 8,
772 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
773 NET_SCTP_HB_INTERVAL = 10,
774 NET_SCTP_PRESERVE_ENABLE = 11,
775 NET_SCTP_MAX_BURST = 12,
776 NET_SCTP_ADDIP_ENABLE = 13,
777 NET_SCTP_PRSCTP_ENABLE = 14,
778 NET_SCTP_SNDBUF_POLICY = 15,
779 NET_SCTP_SACK_TIMEOUT = 16,
780 NET_SCTP_RCVBUF_POLICY = 17,
781 };
782
783 /* /proc/sys/net/bridge */
784 enum {
785 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
786 NET_BRIDGE_NF_CALL_IPTABLES = 2,
787 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
788 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
789 NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5,
790 };
791
792 /* proc/sys/net/irda */
793 enum {
794 NET_IRDA_DISCOVERY=1,
795 NET_IRDA_DEVNAME=2,
796 NET_IRDA_DEBUG=3,
797 NET_IRDA_FAST_POLL=4,
798 NET_IRDA_DISCOVERY_SLOTS=5,
799 NET_IRDA_DISCOVERY_TIMEOUT=6,
800 NET_IRDA_SLOT_TIMEOUT=7,
801 NET_IRDA_MAX_BAUD_RATE=8,
802 NET_IRDA_MIN_TX_TURN_TIME=9,
803 NET_IRDA_MAX_TX_DATA_SIZE=10,
804 NET_IRDA_MAX_TX_WINDOW=11,
805 NET_IRDA_MAX_NOREPLY_TIME=12,
806 NET_IRDA_WARN_NOREPLY_TIME=13,
807 NET_IRDA_LAP_KEEPALIVE_TIME=14,
808 };
809
810
811 /* CTL_FS names: */
812 enum
813 {
814 FS_NRINODE=1, /* int:current number of allocated inodes */
815 FS_STATINODE=2,
816 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
817 FS_NRDQUOT=4, /* int:current number of allocated dquots */
818 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
819 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
820 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
821 FS_DENTRY=8,
822 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
823 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
824 FS_OVERFLOWUID=11, /* int: overflow UID */
825 FS_OVERFLOWGID=12, /* int: overflow GID */
826 FS_LEASES=13, /* int: leases enabled */
827 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
828 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
829 FS_DQSTATS=16, /* disc quota usage statistics and control */
830 FS_XFS=17, /* struct: control xfs parameters */
831 FS_AIO_NR=18, /* current system-wide number of aio requests */
832 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
833 FS_INOTIFY=20, /* inotify submenu */
834 FS_OCFS2=988, /* ocfs2 */
835 };
836
837 /* /proc/sys/fs/quota/ */
838 enum {
839 FS_DQ_LOOKUPS = 1,
840 FS_DQ_DROPS = 2,
841 FS_DQ_READS = 3,
842 FS_DQ_WRITES = 4,
843 FS_DQ_CACHE_HITS = 5,
844 FS_DQ_ALLOCATED = 6,
845 FS_DQ_FREE = 7,
846 FS_DQ_SYNCS = 8,
847 FS_DQ_WARNINGS = 9,
848 };
849
850 /* CTL_DEBUG names: */
851
852 /* CTL_DEV names: */
853 enum {
854 DEV_CDROM=1,
855 DEV_HWMON=2,
856 DEV_PARPORT=3,
857 DEV_RAID=4,
858 DEV_MAC_HID=5,
859 DEV_SCSI=6,
860 DEV_IPMI=7,
861 };
862
863 /* /proc/sys/dev/cdrom */
864 enum {
865 DEV_CDROM_INFO=1,
866 DEV_CDROM_AUTOCLOSE=2,
867 DEV_CDROM_AUTOEJECT=3,
868 DEV_CDROM_DEBUG=4,
869 DEV_CDROM_LOCK=5,
870 DEV_CDROM_CHECK_MEDIA=6
871 };
872
873 /* /proc/sys/dev/parport */
874 enum {
875 DEV_PARPORT_DEFAULT=-3
876 };
877
878 /* /proc/sys/dev/raid */
879 enum {
880 DEV_RAID_SPEED_LIMIT_MIN=1,
881 DEV_RAID_SPEED_LIMIT_MAX=2
882 };
883
884 /* /proc/sys/dev/parport/default */
885 enum {
886 DEV_PARPORT_DEFAULT_TIMESLICE=1,
887 DEV_PARPORT_DEFAULT_SPINTIME=2
888 };
889
890 /* /proc/sys/dev/parport/parport n */
891 enum {
892 DEV_PARPORT_SPINTIME=1,
893 DEV_PARPORT_BASE_ADDR=2,
894 DEV_PARPORT_IRQ=3,
895 DEV_PARPORT_DMA=4,
896 DEV_PARPORT_MODES=5,
897 DEV_PARPORT_DEVICES=6,
898 DEV_PARPORT_AUTOPROBE=16
899 };
900
901 /* /proc/sys/dev/parport/parport n/devices/ */
902 enum {
903 DEV_PARPORT_DEVICES_ACTIVE=-3,
904 };
905
906 /* /proc/sys/dev/parport/parport n/devices/device n */
907 enum {
908 DEV_PARPORT_DEVICE_TIMESLICE=1,
909 };
910
911 /* /proc/sys/dev/mac_hid */
912 enum {
913 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
914 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
915 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
916 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
917 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
918 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
919 };
920
921 /* /proc/sys/dev/scsi */
922 enum {
923 DEV_SCSI_LOGGING_LEVEL=1,
924 };
925
926 /* /proc/sys/dev/ipmi */
927 enum {
928 DEV_IPMI_POWEROFF_POWERCYCLE=1,
929 };
930
931 /* /proc/sys/abi */
932 enum
933 {
934 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
935 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
936 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
937 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
938 ABI_TRACE=5, /* tracing flags */
939 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
940 };
941
942 #ifdef __KERNEL__
943 #include <linux/list.h>
944
945 /* For the /proc/sys support */
946 struct ctl_table;
947 struct nsproxy;
948 struct ctl_table_root;
949
950 struct ctl_table_set {
951 struct list_head list;
952 struct ctl_table_set *parent;
953 int (*is_seen)(struct ctl_table_set *);
954 };
955
956 extern void setup_sysctl_set(struct ctl_table_set *p,
957 struct ctl_table_set *parent,
958 int (*is_seen)(struct ctl_table_set *));
959
960 struct ctl_table_header;
961
962 extern void sysctl_head_get(struct ctl_table_header *);
963 extern void sysctl_head_put(struct ctl_table_header *);
964 extern int sysctl_is_seen(struct ctl_table_header *);
965 extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *);
966 extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
967 extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces,
968 struct ctl_table_header *prev);
969 extern void sysctl_head_finish(struct ctl_table_header *prev);
970 extern int sysctl_perm(struct ctl_table_root *root,
971 struct ctl_table *table, int op);
972
973 typedef struct ctl_table ctl_table;
974
975 typedef int ctl_handler (struct ctl_table *table,
976 void __user *oldval, size_t __user *oldlenp,
977 void __user *newval, size_t newlen);
978
979 typedef int proc_handler (struct ctl_table *ctl, int write,
980 void __user *buffer, size_t *lenp, loff_t *ppos);
981
982 extern int proc_dostring(struct ctl_table *, int,
983 void __user *, size_t *, loff_t *);
984 extern int proc_dointvec(struct ctl_table *, int,
985 void __user *, size_t *, loff_t *);
986 extern int proc_dointvec_minmax(struct ctl_table *, int,
987 void __user *, size_t *, loff_t *);
988 extern int proc_dointvec_jiffies(struct ctl_table *, int,
989 void __user *, size_t *, loff_t *);
990 extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int,
991 void __user *, size_t *, loff_t *);
992 extern int proc_dointvec_ms_jiffies(struct ctl_table *, int,
993 void __user *, size_t *, loff_t *);
994 extern int proc_doulongvec_minmax(struct ctl_table *, int,
995 void __user *, size_t *, loff_t *);
996 extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int,
997 void __user *, size_t *, loff_t *);
998
999 extern int do_sysctl (int __user *name, int nlen,
1000 void __user *oldval, size_t __user *oldlenp,
1001 void __user *newval, size_t newlen);
1002
1003 extern ctl_handler sysctl_data;
1004 extern ctl_handler sysctl_string;
1005 extern ctl_handler sysctl_intvec;
1006 extern ctl_handler sysctl_jiffies;
1007 extern ctl_handler sysctl_ms_jiffies;
1008
1009
1010 /*
1011 * Register a set of sysctl names by calling register_sysctl_table
1012 * with an initialised array of struct ctl_table's. An entry with zero
1013 * ctl_name and NULL procname terminates the table. table->de will be
1014 * set up by the registration and need not be initialised in advance.
1015 *
1016 * sysctl names can be mirrored automatically under /proc/sys. The
1017 * procname supplied controls /proc naming.
1018 *
1019 * The table's mode will be honoured both for sys_sysctl(2) and
1020 * proc-fs access.
1021 *
1022 * Leaf nodes in the sysctl tree will be represented by a single file
1023 * under /proc; non-leaf nodes will be represented by directories. A
1024 * null procname disables /proc mirroring at this node.
1025 *
1026 * sysctl entries with a zero ctl_name will not be available through
1027 * the binary sysctl interface.
1028 *
1029 * sysctl(2) can automatically manage read and write requests through
1030 * the sysctl table. The data and maxlen fields of the ctl_table
1031 * struct enable minimal validation of the values being written to be
1032 * performed, and the mode field allows minimal authentication.
1033 *
1034 * More sophisticated management can be enabled by the provision of a
1035 * strategy routine with the table entry. This will be called before
1036 * any automatic read or write of the data is performed.
1037 *
1038 * The strategy routine may return:
1039 * <0: Error occurred (error is passed to user process)
1040 * 0: OK - proceed with automatic read or write.
1041 * >0: OK - read or write has been done by the strategy routine, so
1042 * return immediately.
1043 *
1044 * There must be a proc_handler routine for any terminal nodes
1045 * mirrored under /proc/sys (non-terminals are handled by a built-in
1046 * directory handler). Several default handlers are available to
1047 * cover common cases.
1048 */
1049
1050 /* A sysctl table is an array of struct ctl_table: */
1051 struct ctl_table
1052 {
1053 int ctl_name; /* Binary ID */
1054 const char *procname; /* Text ID for /proc/sys, or zero */
1055 void *data;
1056 int maxlen;
1057 mode_t mode;
1058 struct ctl_table *child;
1059 struct ctl_table *parent; /* Automatically set */
1060 proc_handler *proc_handler; /* Callback for text formatting */
1061 ctl_handler *strategy; /* Callback function for all r/w */
1062 void *extra1;
1063 void *extra2;
1064 };
1065
1066 struct ctl_table_root {
1067 struct list_head root_list;
1068 struct ctl_table_set default_set;
1069 struct ctl_table_set *(*lookup)(struct ctl_table_root *root,
1070 struct nsproxy *namespaces);
1071 int (*permissions)(struct ctl_table_root *root,
1072 struct nsproxy *namespaces, struct ctl_table *table);
1073 };
1074
1075 /* struct ctl_table_header is used to maintain dynamic lists of
1076 struct ctl_table trees. */
1077 struct ctl_table_header
1078 {
1079 struct ctl_table *ctl_table;
1080 struct list_head ctl_entry;
1081 int used;
1082 int count;
1083 struct completion *unregistering;
1084 struct ctl_table *ctl_table_arg;
1085 struct ctl_table_root *root;
1086 struct ctl_table_set *set;
1087 struct ctl_table *attached_by;
1088 struct ctl_table *attached_to;
1089 struct ctl_table_header *parent;
1090 };
1091
1092 /* struct ctl_path describes where in the hierarchy a table is added */
1093 struct ctl_path {
1094 const char *procname;
1095 int ctl_name;
1096 };
1097
1098 void register_sysctl_root(struct ctl_table_root *root);
1099 struct ctl_table_header *__register_sysctl_paths(
1100 struct ctl_table_root *root, struct nsproxy *namespaces,
1101 const struct ctl_path *path, struct ctl_table *table);
1102 struct ctl_table_header *register_sysctl_table(struct ctl_table * table);
1103 struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
1104 struct ctl_table *table);
1105
1106 void unregister_sysctl_table(struct ctl_table_header * table);
1107 int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table);
1108
1109 #endif /* __KERNEL__ */
1110
1111 #endif /* _LINUX_SYSCTL_H */
linux-next