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databuf bugfixes
[cor_2_6_31.git] / include / linux / sysctl.h
blobe76d3b22a46645b503283138b317ced96a0fbbef
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 file;
33 struct completion;
34
35 #define CTL_MAXNAME 10 /* how many path components do we allow in a
36 call to sysctl? In other words, what is
37 the largest acceptable value for the nlen
38 member of a struct __sysctl_args to have? */
39
40 struct __sysctl_args {
41 int __user *name;
42 int nlen;
43 void __user *oldval;
44 size_t __user *oldlenp;
45 void __user *newval;
46 size_t newlen;
47 unsigned long __unused[4];
48 };
49
50 /* Define sysctl names first */
51
52 /* Top-level names: */
53
54 /* For internal pattern-matching use only: */
55 #ifdef __KERNEL__
56 #define CTL_NONE 0
57 #define CTL_UNNUMBERED CTL_NONE /* sysctl without a binary number */
58 #endif
59
60 enum
61 {
62 CTL_KERN=1, /* General kernel info and control */
63 CTL_VM=2, /* VM management */
64 CTL_NET=3, /* Networking */
65 CTL_PROC=4, /* removal breaks strace(1) compilation */
66 CTL_FS=5, /* Filesystems */
67 CTL_DEBUG=6, /* Debugging */
68 CTL_DEV=7, /* Devices */
69 CTL_BUS=8, /* Busses */
70 CTL_ABI=9, /* Binary emulation */
71 CTL_CPU=10, /* CPU stuff (speed scaling, etc) */
72 CTL_ARLAN=254, /* arlan wireless driver */
73 CTL_S390DBF=5677, /* s390 debug */
74 CTL_SUNRPC=7249, /* sunrpc debug */
75 CTL_PM=9899, /* frv power management */
76 CTL_FRV=9898, /* frv specific sysctls */
77 };
78
79 /* CTL_BUS names: */
80 enum
81 {
82 CTL_BUS_ISA=1 /* ISA */
83 };
84
85 /* /proc/sys/fs/inotify/ */
86 enum
87 {
88 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */
89 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */
90 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */
91 };
92
93 /* CTL_KERN names: */
94 enum
95 {
96 KERN_OSTYPE=1, /* string: system version */
97 KERN_OSRELEASE=2, /* string: system release */
98 KERN_OSREV=3, /* int: system revision */
99 KERN_VERSION=4, /* string: compile time info */
100 KERN_SECUREMASK=5, /* struct: maximum rights mask */
101 KERN_PROF=6, /* table: profiling information */
102 KERN_NODENAME=7,
103 KERN_DOMAINNAME=8,
104
105 KERN_PANIC=15, /* int: panic timeout */
106 KERN_REALROOTDEV=16, /* real root device to mount after initrd */
107
108 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
109 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
110 KERN_PRINTK=23, /* struct: control printk logging parameters */
111 KERN_NAMETRANS=24, /* Name translation */
112 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
113 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
114 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
115 KERN_MODPROBE=28,
116 KERN_SG_BIG_BUFF=29,
117 KERN_ACCT=30, /* BSD process accounting parameters */
118 KERN_PPC_L2CR=31, /* l2cr register on PPC */
119
120 KERN_RTSIGNR=32, /* Number of rt sigs queued */
121 KERN_RTSIGMAX=33, /* Max queuable */
122
123 KERN_SHMMAX=34, /* long: Maximum shared memory segment */
124 KERN_MSGMAX=35, /* int: Maximum size of a messege */
125 KERN_MSGMNB=36, /* int: Maximum message queue size */
126 KERN_MSGPOOL=37, /* int: Maximum system message pool size */
127 KERN_SYSRQ=38, /* int: Sysreq enable */
128 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
129 KERN_RANDOM=40, /* Random driver */
130 KERN_SHMALL=41, /* int: Maximum size of shared memory */
131 KERN_MSGMNI=42, /* int: msg queue identifiers */
132 KERN_SEM=43, /* struct: sysv semaphore limits */
133 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
134 KERN_SHMMNI=45, /* int: shm array identifiers */
135 KERN_OVERFLOWUID=46, /* int: overflow UID */
136 KERN_OVERFLOWGID=47, /* int: overflow GID */
137 KERN_SHMPATH=48, /* string: path to shm fs */
138 KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */
139 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
140 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
141 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
142 KERN_TAINTED=53, /* int: various kernel tainted flags */
143 KERN_CADPID=54, /* int: PID of the process to notify on CAD */
144 KERN_PIDMAX=55, /* int: PID # limit */
145 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
146 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
147 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
148 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
149 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
150 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
151 KERN_PTY=62, /* dir: pty driver */
152 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
153 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
154 KERN_HZ_TIMER=65, /* int: hz timer on or off */
155 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
156 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
157 KERN_RANDOMIZE=68, /* int: randomize virtual address space */
158 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
159 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
160 KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
161 KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
162 KERN_COMPAT_LOG=73, /* int: print compat layer messages */
163 KERN_MAX_LOCK_DEPTH=74,
164 KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */
165 KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
166 };
167
168
169
170 /* CTL_VM names: */
171 enum
172 {
173 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
174 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
175 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
176 VM_UNUSED4=4, /* Spare */
177 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
178 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
179 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
180 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
181 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
182 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
183 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
184 VM_DIRTY_RATIO=12, /* dirty_ratio */
185 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
186 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
187 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
188 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
189 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
190 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
191 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
192 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
193 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
194 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
195 VM_LAPTOP_MODE=23, /* vm laptop mode */
196 VM_BLOCK_DUMP=24, /* block dump mode */
197 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
198 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
199 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
200 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
201 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */
202 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */
203 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
204 VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */
205 VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
206 VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
207 VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */
208 };
209
210
211 /* CTL_NET names: */
212 enum
213 {
214 NET_CORE=1,
215 NET_ETHER=2,
216 NET_802=3,
217 NET_UNIX=4,
218 NET_IPV4=5,
219 NET_IPX=6,
220 NET_ATALK=7,
221 NET_NETROM=8,
222 NET_AX25=9,
223 NET_BRIDGE=10,
224 NET_ROSE=11,
225 NET_IPV6=12,
226 NET_X25=13,
227 NET_TR=14,
228 NET_DECNET=15,
229 NET_ECONET=16,
230 NET_SCTP=17,
231 NET_LLC=18,
232 NET_NETFILTER=19,
233 NET_DCCP=20,
234 NET_IRDA=412,
235 };
236
237 /* /proc/sys/kernel/random */
238 enum
239 {
240 RANDOM_POOLSIZE=1,
241 RANDOM_ENTROPY_COUNT=2,
242 RANDOM_READ_THRESH=3,
243 RANDOM_WRITE_THRESH=4,
244 RANDOM_BOOT_ID=5,
245 RANDOM_UUID=6
246 };
247
248 /* /proc/sys/kernel/pty */
249 enum
250 {
251 PTY_MAX=1,
252 PTY_NR=2
253 };
254
255 /* /proc/sys/bus/isa */
256 enum
257 {
258 BUS_ISA_MEM_BASE=1,
259 BUS_ISA_PORT_BASE=2,
260 BUS_ISA_PORT_SHIFT=3
261 };
262
263 /* /proc/sys/net/core */
264 enum
265 {
266 NET_CORE_WMEM_MAX=1,
267 NET_CORE_RMEM_MAX=2,
268 NET_CORE_WMEM_DEFAULT=3,
269 NET_CORE_RMEM_DEFAULT=4,
270 /* was NET_CORE_DESTROY_DELAY */
271 NET_CORE_MAX_BACKLOG=6,
272 NET_CORE_FASTROUTE=7,
273 NET_CORE_MSG_COST=8,
274 NET_CORE_MSG_BURST=9,
275 NET_CORE_OPTMEM_MAX=10,
276 NET_CORE_HOT_LIST_LENGTH=11,
277 NET_CORE_DIVERT_VERSION=12,
278 NET_CORE_NO_CONG_THRESH=13,
279 NET_CORE_NO_CONG=14,
280 NET_CORE_LO_CONG=15,
281 NET_CORE_MOD_CONG=16,
282 NET_CORE_DEV_WEIGHT=17,
283 NET_CORE_SOMAXCONN=18,
284 NET_CORE_BUDGET=19,
285 NET_CORE_AEVENT_ETIME=20,
286 NET_CORE_AEVENT_RSEQTH=21,
287 NET_CORE_WARNINGS=22,
288 };
289
290 /* /proc/sys/net/ethernet */
291
292 /* /proc/sys/net/802 */
293
294 /* /proc/sys/net/unix */
295
296 enum
297 {
298 NET_UNIX_DESTROY_DELAY=1,
299 NET_UNIX_DELETE_DELAY=2,
300 NET_UNIX_MAX_DGRAM_QLEN=3,
301 };
302
303 /* /proc/sys/net/netfilter */
304 enum
305 {
306 NET_NF_CONNTRACK_MAX=1,
307 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
308 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
309 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
310 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
311 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
312 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
313 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
314 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
315 NET_NF_CONNTRACK_UDP_TIMEOUT=10,
316 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
317 NET_NF_CONNTRACK_ICMP_TIMEOUT=12,
318 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13,
319 NET_NF_CONNTRACK_BUCKETS=14,
320 NET_NF_CONNTRACK_LOG_INVALID=15,
321 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
322 NET_NF_CONNTRACK_TCP_LOOSE=17,
323 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18,
324 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19,
325 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
326 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
327 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
328 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
329 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
330 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
331 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
332 NET_NF_CONNTRACK_COUNT=27,
333 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28,
334 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
335 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
336 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
337 NET_NF_CONNTRACK_CHECKSUM=32,
338 };
339
340 /* /proc/sys/net/ipv4 */
341 enum
342 {
343 /* v2.0 compatibile variables */
344 NET_IPV4_FORWARD=8,
345 NET_IPV4_DYNADDR=9,
346
347 NET_IPV4_CONF=16,
348 NET_IPV4_NEIGH=17,
349 NET_IPV4_ROUTE=18,
350 NET_IPV4_FIB_HASH=19,
351 NET_IPV4_NETFILTER=20,
352
353 NET_IPV4_TCP_TIMESTAMPS=33,
354 NET_IPV4_TCP_WINDOW_SCALING=34,
355 NET_IPV4_TCP_SACK=35,
356 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
357 NET_IPV4_DEFAULT_TTL=37,
358 NET_IPV4_AUTOCONFIG=38,
359 NET_IPV4_NO_PMTU_DISC=39,
360 NET_IPV4_TCP_SYN_RETRIES=40,
361 NET_IPV4_IPFRAG_HIGH_THRESH=41,
362 NET_IPV4_IPFRAG_LOW_THRESH=42,
363 NET_IPV4_IPFRAG_TIME=43,
364 NET_IPV4_TCP_MAX_KA_PROBES=44,
365 NET_IPV4_TCP_KEEPALIVE_TIME=45,
366 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
367 NET_IPV4_TCP_RETRIES1=47,
368 NET_IPV4_TCP_RETRIES2=48,
369 NET_IPV4_TCP_FIN_TIMEOUT=49,
370 NET_IPV4_IP_MASQ_DEBUG=50,
371 NET_TCP_SYNCOOKIES=51,
372 NET_TCP_STDURG=52,
373 NET_TCP_RFC1337=53,
374 NET_TCP_SYN_TAILDROP=54,
375 NET_TCP_MAX_SYN_BACKLOG=55,
376 NET_IPV4_LOCAL_PORT_RANGE=56,
377 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
378 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
379 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
380 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
381 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
382 NET_IPV4_ICMP_PARAMPROB_RATE=62,
383 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
384 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
385 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
386 NET_TCP_TW_RECYCLE=66,
387 NET_IPV4_ALWAYS_DEFRAG=67,
388 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
389 NET_IPV4_INET_PEER_THRESHOLD=69,
390 NET_IPV4_INET_PEER_MINTTL=70,
391 NET_IPV4_INET_PEER_MAXTTL=71,
392 NET_IPV4_INET_PEER_GC_MINTIME=72,
393 NET_IPV4_INET_PEER_GC_MAXTIME=73,
394 NET_TCP_ORPHAN_RETRIES=74,
395 NET_TCP_ABORT_ON_OVERFLOW=75,
396 NET_TCP_SYNACK_RETRIES=76,
397 NET_TCP_MAX_ORPHANS=77,
398 NET_TCP_MAX_TW_BUCKETS=78,
399 NET_TCP_FACK=79,
400 NET_TCP_REORDERING=80,
401 NET_TCP_ECN=81,
402 NET_TCP_DSACK=82,
403 NET_TCP_MEM=83,
404 NET_TCP_WMEM=84,
405 NET_TCP_RMEM=85,
406 NET_TCP_APP_WIN=86,
407 NET_TCP_ADV_WIN_SCALE=87,
408 NET_IPV4_NONLOCAL_BIND=88,
409 NET_IPV4_ICMP_RATELIMIT=89,
410 NET_IPV4_ICMP_RATEMASK=90,
411 NET_TCP_TW_REUSE=91,
412 NET_TCP_FRTO=92,
413 NET_TCP_LOW_LATENCY=93,
414 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
415 NET_IPV4_IGMP_MAX_MSF=96,
416 NET_TCP_NO_METRICS_SAVE=97,
417 NET_TCP_DEFAULT_WIN_SCALE=105,
418 NET_TCP_MODERATE_RCVBUF=106,
419 NET_TCP_TSO_WIN_DIVISOR=107,
420 NET_TCP_BIC_BETA=108,
421 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
422 NET_TCP_CONG_CONTROL=110,
423 NET_TCP_ABC=111,
424 NET_IPV4_IPFRAG_MAX_DIST=112,
425 NET_TCP_MTU_PROBING=113,
426 NET_TCP_BASE_MSS=114,
427 NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115,
428 NET_TCP_DMA_COPYBREAK=116,
429 NET_TCP_SLOW_START_AFTER_IDLE=117,
430 NET_CIPSOV4_CACHE_ENABLE=118,
431 NET_CIPSOV4_CACHE_BUCKET_SIZE=119,
432 NET_CIPSOV4_RBM_OPTFMT=120,
433 NET_CIPSOV4_RBM_STRICTVALID=121,
434 NET_TCP_AVAIL_CONG_CONTROL=122,
435 NET_TCP_ALLOWED_CONG_CONTROL=123,
436 NET_TCP_MAX_SSTHRESH=124,
437 NET_TCP_FRTO_RESPONSE=125,
438 };
439
440 enum {
441 NET_IPV4_ROUTE_FLUSH=1,
442 NET_IPV4_ROUTE_MIN_DELAY=2, /* obsolete since 2.6.25 */
443 NET_IPV4_ROUTE_MAX_DELAY=3, /* obsolete since 2.6.25 */
444 NET_IPV4_ROUTE_GC_THRESH=4,
445 NET_IPV4_ROUTE_MAX_SIZE=5,
446 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
447 NET_IPV4_ROUTE_GC_TIMEOUT=7,
448 NET_IPV4_ROUTE_GC_INTERVAL=8,
449 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
450 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
451 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
452 NET_IPV4_ROUTE_ERROR_COST=12,
453 NET_IPV4_ROUTE_ERROR_BURST=13,
454 NET_IPV4_ROUTE_GC_ELASTICITY=14,
455 NET_IPV4_ROUTE_MTU_EXPIRES=15,
456 NET_IPV4_ROUTE_MIN_PMTU=16,
457 NET_IPV4_ROUTE_MIN_ADVMSS=17,
458 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
459 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
460 };
461
462 enum
463 {
464 NET_PROTO_CONF_ALL=-2,
465 NET_PROTO_CONF_DEFAULT=-3
466
467 /* And device ifindices ... */
468 };
469
470 enum
471 {
472 NET_IPV4_CONF_FORWARDING=1,
473 NET_IPV4_CONF_MC_FORWARDING=2,
474 NET_IPV4_CONF_PROXY_ARP=3,
475 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
476 NET_IPV4_CONF_SECURE_REDIRECTS=5,
477 NET_IPV4_CONF_SEND_REDIRECTS=6,
478 NET_IPV4_CONF_SHARED_MEDIA=7,
479 NET_IPV4_CONF_RP_FILTER=8,
480 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
481 NET_IPV4_CONF_BOOTP_RELAY=10,
482 NET_IPV4_CONF_LOG_MARTIANS=11,
483 NET_IPV4_CONF_TAG=12,
484 NET_IPV4_CONF_ARPFILTER=13,
485 NET_IPV4_CONF_MEDIUM_ID=14,
486 NET_IPV4_CONF_NOXFRM=15,
487 NET_IPV4_CONF_NOPOLICY=16,
488 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
489 NET_IPV4_CONF_ARP_ANNOUNCE=18,
490 NET_IPV4_CONF_ARP_IGNORE=19,
491 NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
492 NET_IPV4_CONF_ARP_ACCEPT=21,
493 NET_IPV4_CONF_ARP_NOTIFY=22,
494 __NET_IPV4_CONF_MAX
495 };
496
497 /* /proc/sys/net/ipv4/netfilter */
498 enum
499 {
500 NET_IPV4_NF_CONNTRACK_MAX=1,
501 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
502 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
503 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
504 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
505 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
506 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
507 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
508 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
509 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
510 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
511 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
512 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
513 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
514 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
515 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
516 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
517 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
518 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
519 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
520 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
521 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
522 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
523 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
524 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
525 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
526 NET_IPV4_NF_CONNTRACK_COUNT=27,
527 NET_IPV4_NF_CONNTRACK_CHECKSUM=28,
528 };
529
530 /* /proc/sys/net/ipv6 */
531 enum {
532 NET_IPV6_CONF=16,
533 NET_IPV6_NEIGH=17,
534 NET_IPV6_ROUTE=18,
535 NET_IPV6_ICMP=19,
536 NET_IPV6_BINDV6ONLY=20,
537 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
538 NET_IPV6_IP6FRAG_LOW_THRESH=22,
539 NET_IPV6_IP6FRAG_TIME=23,
540 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
541 NET_IPV6_MLD_MAX_MSF=25,
542 };
543
544 enum {
545 NET_IPV6_ROUTE_FLUSH=1,
546 NET_IPV6_ROUTE_GC_THRESH=2,
547 NET_IPV6_ROUTE_MAX_SIZE=3,
548 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
549 NET_IPV6_ROUTE_GC_TIMEOUT=5,
550 NET_IPV6_ROUTE_GC_INTERVAL=6,
551 NET_IPV6_ROUTE_GC_ELASTICITY=7,
552 NET_IPV6_ROUTE_MTU_EXPIRES=8,
553 NET_IPV6_ROUTE_MIN_ADVMSS=9,
554 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
555 };
556
557 enum {
558 NET_IPV6_FORWARDING=1,
559 NET_IPV6_HOP_LIMIT=2,
560 NET_IPV6_MTU=3,
561 NET_IPV6_ACCEPT_RA=4,
562 NET_IPV6_ACCEPT_REDIRECTS=5,
563 NET_IPV6_AUTOCONF=6,
564 NET_IPV6_DAD_TRANSMITS=7,
565 NET_IPV6_RTR_SOLICITS=8,
566 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
567 NET_IPV6_RTR_SOLICIT_DELAY=10,
568 NET_IPV6_USE_TEMPADDR=11,
569 NET_IPV6_TEMP_VALID_LFT=12,
570 NET_IPV6_TEMP_PREFERED_LFT=13,
571 NET_IPV6_REGEN_MAX_RETRY=14,
572 NET_IPV6_MAX_DESYNC_FACTOR=15,
573 NET_IPV6_MAX_ADDRESSES=16,
574 NET_IPV6_FORCE_MLD_VERSION=17,
575 NET_IPV6_ACCEPT_RA_DEFRTR=18,
576 NET_IPV6_ACCEPT_RA_PINFO=19,
577 NET_IPV6_ACCEPT_RA_RTR_PREF=20,
578 NET_IPV6_RTR_PROBE_INTERVAL=21,
579 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
580 NET_IPV6_PROXY_NDP=23,
581 NET_IPV6_ACCEPT_SOURCE_ROUTE=25,
582 __NET_IPV6_MAX
583 };
584
585 /* /proc/sys/net/ipv6/icmp */
586 enum {
587 NET_IPV6_ICMP_RATELIMIT=1
588 };
589
590 /* /proc/sys/net/<protocol>/neigh/<dev> */
591 enum {
592 NET_NEIGH_MCAST_SOLICIT=1,
593 NET_NEIGH_UCAST_SOLICIT=2,
594 NET_NEIGH_APP_SOLICIT=3,
595 NET_NEIGH_RETRANS_TIME=4,
596 NET_NEIGH_REACHABLE_TIME=5,
597 NET_NEIGH_DELAY_PROBE_TIME=6,
598 NET_NEIGH_GC_STALE_TIME=7,
599 NET_NEIGH_UNRES_QLEN=8,
600 NET_NEIGH_PROXY_QLEN=9,
601 NET_NEIGH_ANYCAST_DELAY=10,
602 NET_NEIGH_PROXY_DELAY=11,
603 NET_NEIGH_LOCKTIME=12,
604 NET_NEIGH_GC_INTERVAL=13,
605 NET_NEIGH_GC_THRESH1=14,
606 NET_NEIGH_GC_THRESH2=15,
607 NET_NEIGH_GC_THRESH3=16,
608 NET_NEIGH_RETRANS_TIME_MS=17,
609 NET_NEIGH_REACHABLE_TIME_MS=18,
610 __NET_NEIGH_MAX
611 };
612
613 /* /proc/sys/net/dccp */
614 enum {
615 NET_DCCP_DEFAULT=1,
616 };
617
618 /* /proc/sys/net/ipx */
619 enum {
620 NET_IPX_PPROP_BROADCASTING=1,
621 NET_IPX_FORWARDING=2
622 };
623
624 /* /proc/sys/net/llc */
625 enum {
626 NET_LLC2=1,
627 NET_LLC_STATION=2,
628 };
629
630 /* /proc/sys/net/llc/llc2 */
631 enum {
632 NET_LLC2_TIMEOUT=1,
633 };
634
635 /* /proc/sys/net/llc/station */
636 enum {
637 NET_LLC_STATION_ACK_TIMEOUT=1,
638 };
639
640 /* /proc/sys/net/llc/llc2/timeout */
641 enum {
642 NET_LLC2_ACK_TIMEOUT=1,
643 NET_LLC2_P_TIMEOUT=2,
644 NET_LLC2_REJ_TIMEOUT=3,
645 NET_LLC2_BUSY_TIMEOUT=4,
646 };
647
648 /* /proc/sys/net/appletalk */
649 enum {
650 NET_ATALK_AARP_EXPIRY_TIME=1,
651 NET_ATALK_AARP_TICK_TIME=2,
652 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
653 NET_ATALK_AARP_RESOLVE_TIME=4
654 };
655
656
657 /* /proc/sys/net/netrom */
658 enum {
659 NET_NETROM_DEFAULT_PATH_QUALITY=1,
660 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
661 NET_NETROM_NETWORK_TTL_INITIALISER=3,
662 NET_NETROM_TRANSPORT_TIMEOUT=4,
663 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
664 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
665 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
666 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
667 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
668 NET_NETROM_ROUTING_CONTROL=10,
669 NET_NETROM_LINK_FAILS_COUNT=11,
670 NET_NETROM_RESET=12
671 };
672
673 /* /proc/sys/net/ax25 */
674 enum {
675 NET_AX25_IP_DEFAULT_MODE=1,
676 NET_AX25_DEFAULT_MODE=2,
677 NET_AX25_BACKOFF_TYPE=3,
678 NET_AX25_CONNECT_MODE=4,
679 NET_AX25_STANDARD_WINDOW=5,
680 NET_AX25_EXTENDED_WINDOW=6,
681 NET_AX25_T1_TIMEOUT=7,
682 NET_AX25_T2_TIMEOUT=8,
683 NET_AX25_T3_TIMEOUT=9,
684 NET_AX25_IDLE_TIMEOUT=10,
685 NET_AX25_N2=11,
686 NET_AX25_PACLEN=12,
687 NET_AX25_PROTOCOL=13,
688 NET_AX25_DAMA_SLAVE_TIMEOUT=14
689 };
690
691 /* /proc/sys/net/rose */
692 enum {
693 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
694 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
695 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
696 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
697 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
698 NET_ROSE_ROUTING_CONTROL=6,
699 NET_ROSE_LINK_FAIL_TIMEOUT=7,
700 NET_ROSE_MAX_VCS=8,
701 NET_ROSE_WINDOW_SIZE=9,
702 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
703 };
704
705 /* /proc/sys/net/x25 */
706 enum {
707 NET_X25_RESTART_REQUEST_TIMEOUT=1,
708 NET_X25_CALL_REQUEST_TIMEOUT=2,
709 NET_X25_RESET_REQUEST_TIMEOUT=3,
710 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
711 NET_X25_ACK_HOLD_BACK_TIMEOUT=5,
712 NET_X25_FORWARD=6
713 };
714
715 /* /proc/sys/net/token-ring */
716 enum
717 {
718 NET_TR_RIF_TIMEOUT=1
719 };
720
721 /* /proc/sys/net/decnet/ */
722 enum {
723 NET_DECNET_NODE_TYPE = 1,
724 NET_DECNET_NODE_ADDRESS = 2,
725 NET_DECNET_NODE_NAME = 3,
726 NET_DECNET_DEFAULT_DEVICE = 4,
727 NET_DECNET_TIME_WAIT = 5,
728 NET_DECNET_DN_COUNT = 6,
729 NET_DECNET_DI_COUNT = 7,
730 NET_DECNET_DR_COUNT = 8,
731 NET_DECNET_DST_GC_INTERVAL = 9,
732 NET_DECNET_CONF = 10,
733 NET_DECNET_NO_FC_MAX_CWND = 11,
734 NET_DECNET_MEM = 12,
735 NET_DECNET_RMEM = 13,
736 NET_DECNET_WMEM = 14,
737 NET_DECNET_DEBUG_LEVEL = 255
738 };
739
740 /* /proc/sys/net/decnet/conf/<dev> */
741 enum {
742 NET_DECNET_CONF_LOOPBACK = -2,
743 NET_DECNET_CONF_DDCMP = -3,
744 NET_DECNET_CONF_PPP = -4,
745 NET_DECNET_CONF_X25 = -5,
746 NET_DECNET_CONF_GRE = -6,
747 NET_DECNET_CONF_ETHER = -7
748
749 /* ... and ifindex of devices */
750 };
751
752 /* /proc/sys/net/decnet/conf/<dev>/ */
753 enum {
754 NET_DECNET_CONF_DEV_PRIORITY = 1,
755 NET_DECNET_CONF_DEV_T1 = 2,
756 NET_DECNET_CONF_DEV_T2 = 3,
757 NET_DECNET_CONF_DEV_T3 = 4,
758 NET_DECNET_CONF_DEV_FORWARDING = 5,
759 NET_DECNET_CONF_DEV_BLKSIZE = 6,
760 NET_DECNET_CONF_DEV_STATE = 7
761 };
762
763 /* /proc/sys/net/sctp */
764 enum {
765 NET_SCTP_RTO_INITIAL = 1,
766 NET_SCTP_RTO_MIN = 2,
767 NET_SCTP_RTO_MAX = 3,
768 NET_SCTP_RTO_ALPHA = 4,
769 NET_SCTP_RTO_BETA = 5,
770 NET_SCTP_VALID_COOKIE_LIFE = 6,
771 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
772 NET_SCTP_PATH_MAX_RETRANS = 8,
773 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
774 NET_SCTP_HB_INTERVAL = 10,
775 NET_SCTP_PRESERVE_ENABLE = 11,
776 NET_SCTP_MAX_BURST = 12,
777 NET_SCTP_ADDIP_ENABLE = 13,
778 NET_SCTP_PRSCTP_ENABLE = 14,
779 NET_SCTP_SNDBUF_POLICY = 15,
780 NET_SCTP_SACK_TIMEOUT = 16,
781 NET_SCTP_RCVBUF_POLICY = 17,
782 };
783
784 /* /proc/sys/net/bridge */
785 enum {
786 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
787 NET_BRIDGE_NF_CALL_IPTABLES = 2,
788 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
789 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
790 NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5,
791 };
792
793 /* proc/sys/net/irda */
794 enum {
795 NET_IRDA_DISCOVERY=1,
796 NET_IRDA_DEVNAME=2,
797 NET_IRDA_DEBUG=3,
798 NET_IRDA_FAST_POLL=4,
799 NET_IRDA_DISCOVERY_SLOTS=5,
800 NET_IRDA_DISCOVERY_TIMEOUT=6,
801 NET_IRDA_SLOT_TIMEOUT=7,
802 NET_IRDA_MAX_BAUD_RATE=8,
803 NET_IRDA_MIN_TX_TURN_TIME=9,
804 NET_IRDA_MAX_TX_DATA_SIZE=10,
805 NET_IRDA_MAX_TX_WINDOW=11,
806 NET_IRDA_MAX_NOREPLY_TIME=12,
807 NET_IRDA_WARN_NOREPLY_TIME=13,
808 NET_IRDA_LAP_KEEPALIVE_TIME=14,
809 };
810
811
812 /* CTL_FS names: */
813 enum
814 {
815 FS_NRINODE=1, /* int:current number of allocated inodes */
816 FS_STATINODE=2,
817 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
818 FS_NRDQUOT=4, /* int:current number of allocated dquots */
819 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
820 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
821 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
822 FS_DENTRY=8,
823 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
824 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
825 FS_OVERFLOWUID=11, /* int: overflow UID */
826 FS_OVERFLOWGID=12, /* int: overflow GID */
827 FS_LEASES=13, /* int: leases enabled */
828 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
829 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
830 FS_DQSTATS=16, /* disc quota usage statistics and control */
831 FS_XFS=17, /* struct: control xfs parameters */
832 FS_AIO_NR=18, /* current system-wide number of aio requests */
833 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
834 FS_INOTIFY=20, /* inotify submenu */
835 FS_OCFS2=988, /* ocfs2 */
836 };
837
838 /* /proc/sys/fs/quota/ */
839 enum {
840 FS_DQ_LOOKUPS = 1,
841 FS_DQ_DROPS = 2,
842 FS_DQ_READS = 3,
843 FS_DQ_WRITES = 4,
844 FS_DQ_CACHE_HITS = 5,
845 FS_DQ_ALLOCATED = 6,
846 FS_DQ_FREE = 7,
847 FS_DQ_SYNCS = 8,
848 FS_DQ_WARNINGS = 9,
849 };
850
851 /* CTL_DEBUG names: */
852
853 /* CTL_DEV names: */
854 enum {
855 DEV_CDROM=1,
856 DEV_HWMON=2,
857 DEV_PARPORT=3,
858 DEV_RAID=4,
859 DEV_MAC_HID=5,
860 DEV_SCSI=6,
861 DEV_IPMI=7,
862 };
863
864 /* /proc/sys/dev/cdrom */
865 enum {
866 DEV_CDROM_INFO=1,
867 DEV_CDROM_AUTOCLOSE=2,
868 DEV_CDROM_AUTOEJECT=3,
869 DEV_CDROM_DEBUG=4,
870 DEV_CDROM_LOCK=5,
871 DEV_CDROM_CHECK_MEDIA=6
872 };
873
874 /* /proc/sys/dev/parport */
875 enum {
876 DEV_PARPORT_DEFAULT=-3
877 };
878
879 /* /proc/sys/dev/raid */
880 enum {
881 DEV_RAID_SPEED_LIMIT_MIN=1,
882 DEV_RAID_SPEED_LIMIT_MAX=2
883 };
884
885 /* /proc/sys/dev/parport/default */
886 enum {
887 DEV_PARPORT_DEFAULT_TIMESLICE=1,
888 DEV_PARPORT_DEFAULT_SPINTIME=2
889 };
890
891 /* /proc/sys/dev/parport/parport n */
892 enum {
893 DEV_PARPORT_SPINTIME=1,
894 DEV_PARPORT_BASE_ADDR=2,
895 DEV_PARPORT_IRQ=3,
896 DEV_PARPORT_DMA=4,
897 DEV_PARPORT_MODES=5,
898 DEV_PARPORT_DEVICES=6,
899 DEV_PARPORT_AUTOPROBE=16
900 };
901
902 /* /proc/sys/dev/parport/parport n/devices/ */
903 enum {
904 DEV_PARPORT_DEVICES_ACTIVE=-3,
905 };
906
907 /* /proc/sys/dev/parport/parport n/devices/device n */
908 enum {
909 DEV_PARPORT_DEVICE_TIMESLICE=1,
910 };
911
912 /* /proc/sys/dev/mac_hid */
913 enum {
914 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
915 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
916 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
917 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
918 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
919 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
920 };
921
922 /* /proc/sys/dev/scsi */
923 enum {
924 DEV_SCSI_LOGGING_LEVEL=1,
925 };
926
927 /* /proc/sys/dev/ipmi */
928 enum {
929 DEV_IPMI_POWEROFF_POWERCYCLE=1,
930 };
931
932 /* /proc/sys/abi */
933 enum
934 {
935 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
936 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
937 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
938 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
939 ABI_TRACE=5, /* tracing flags */
940 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
941 };
942
943 #ifdef __KERNEL__
944 #include <linux/list.h>
945
946 /* For the /proc/sys support */
947 struct ctl_table;
948 struct nsproxy;
949 struct ctl_table_root;
950
951 struct ctl_table_set {
952 struct list_head list;
953 struct ctl_table_set *parent;
954 int (*is_seen)(struct ctl_table_set *);
955 };
956
957 extern void setup_sysctl_set(struct ctl_table_set *p,
958 struct ctl_table_set *parent,
959 int (*is_seen)(struct ctl_table_set *));
960
961 struct ctl_table_header;
962
963 extern void sysctl_head_get(struct ctl_table_header *);
964 extern void sysctl_head_put(struct ctl_table_header *);
965 extern int sysctl_is_seen(struct ctl_table_header *);
966 extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *);
967 extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
968 extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces,
969 struct ctl_table_header *prev);
970 extern void sysctl_head_finish(struct ctl_table_header *prev);
971 extern int sysctl_perm(struct ctl_table_root *root,
972 struct ctl_table *table, int op);
973
974 typedef struct ctl_table ctl_table;
975
976 typedef int ctl_handler (struct ctl_table *table,
977 void __user *oldval, size_t __user *oldlenp,
978 void __user *newval, size_t newlen);
979
980 typedef int proc_handler (struct ctl_table *ctl, int write, struct file * filp,
981 void __user *buffer, size_t *lenp, loff_t *ppos);
982
983 extern int proc_dostring(struct ctl_table *, int, struct file *,
984 void __user *, size_t *, loff_t *);
985 extern int proc_dointvec(struct ctl_table *, int, struct file *,
986 void __user *, size_t *, loff_t *);
987 extern int proc_dointvec_minmax(struct ctl_table *, int, struct file *,
988 void __user *, size_t *, loff_t *);
989 extern int proc_dointvec_jiffies(struct ctl_table *, int, struct file *,
990 void __user *, size_t *, loff_t *);
991 extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, struct file *,
992 void __user *, size_t *, loff_t *);
993 extern int proc_dointvec_ms_jiffies(struct ctl_table *, int, struct file *,
994 void __user *, size_t *, loff_t *);
995 extern int proc_doulongvec_minmax(struct ctl_table *, int, struct file *,
996 void __user *, size_t *, loff_t *);
997 extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int,
998 struct file *, void __user *, size_t *, loff_t *);
999
1000 extern int do_sysctl (int __user *name, int nlen,
1001 void __user *oldval, size_t __user *oldlenp,
1002 void __user *newval, size_t newlen);
1003
1004 extern ctl_handler sysctl_data;
1005 extern ctl_handler sysctl_string;
1006 extern ctl_handler sysctl_intvec;
1007 extern ctl_handler sysctl_jiffies;
1008 extern ctl_handler sysctl_ms_jiffies;
1009
1010
1011 /*
1012 * Register a set of sysctl names by calling register_sysctl_table
1013 * with an initialised array of struct ctl_table's. An entry with zero
1014 * ctl_name and NULL procname terminates the table. table->de will be
1015 * set up by the registration and need not be initialised in advance.
1016 *
1017 * sysctl names can be mirrored automatically under /proc/sys. The
1018 * procname supplied controls /proc naming.
1019 *
1020 * The table's mode will be honoured both for sys_sysctl(2) and
1021 * proc-fs access.
1022 *
1023 * Leaf nodes in the sysctl tree will be represented by a single file
1024 * under /proc; non-leaf nodes will be represented by directories. A
1025 * null procname disables /proc mirroring at this node.
1026 *
1027 * sysctl entries with a zero ctl_name will not be available through
1028 * the binary sysctl interface.
1029 *
1030 * sysctl(2) can automatically manage read and write requests through
1031 * the sysctl table. The data and maxlen fields of the ctl_table
1032 * struct enable minimal validation of the values being written to be
1033 * performed, and the mode field allows minimal authentication.
1034 *
1035 * More sophisticated management can be enabled by the provision of a
1036 * strategy routine with the table entry. This will be called before
1037 * any automatic read or write of the data is performed.
1038 *
1039 * The strategy routine may return:
1040 * <0: Error occurred (error is passed to user process)
1041 * 0: OK - proceed with automatic read or write.
1042 * >0: OK - read or write has been done by the strategy routine, so
1043 * return immediately.
1044 *
1045 * There must be a proc_handler routine for any terminal nodes
1046 * mirrored under /proc/sys (non-terminals are handled by a built-in
1047 * directory handler). Several default handlers are available to
1048 * cover common cases.
1049 */
1050
1051 /* A sysctl table is an array of struct ctl_table: */
1052 struct ctl_table
1053 {
1054 int ctl_name; /* Binary ID */
1055 const char *procname; /* Text ID for /proc/sys, or zero */
1056 void *data;
1057 int maxlen;
1058 mode_t mode;
1059 struct ctl_table *child;
1060 struct ctl_table *parent; /* Automatically set */
1061 proc_handler *proc_handler; /* Callback for text formatting */
1062 ctl_handler *strategy; /* Callback function for all r/w */
1063 void *extra1;
1064 void *extra2;
1065 };
1066
1067 struct ctl_table_root {
1068 struct list_head root_list;
1069 struct ctl_table_set default_set;
1070 struct ctl_table_set *(*lookup)(struct ctl_table_root *root,
1071 struct nsproxy *namespaces);
1072 int (*permissions)(struct ctl_table_root *root,
1073 struct nsproxy *namespaces, struct ctl_table *table);
1074 };
1075
1076 /* struct ctl_table_header is used to maintain dynamic lists of
1077 struct ctl_table trees. */
1078 struct ctl_table_header
1079 {
1080 struct ctl_table *ctl_table;
1081 struct list_head ctl_entry;
1082 int used;
1083 int count;
1084 struct completion *unregistering;
1085 struct ctl_table *ctl_table_arg;
1086 struct ctl_table_root *root;
1087 struct ctl_table_set *set;
1088 struct ctl_table *attached_by;
1089 struct ctl_table *attached_to;
1090 struct ctl_table_header *parent;
1091 };
1092
1093 /* struct ctl_path describes where in the hierarchy a table is added */
1094 struct ctl_path {
1095 const char *procname;
1096 int ctl_name;
1097 };
1098
1099 void register_sysctl_root(struct ctl_table_root *root);
1100 struct ctl_table_header *__register_sysctl_paths(
1101 struct ctl_table_root *root, struct nsproxy *namespaces,
1102 const struct ctl_path *path, struct ctl_table *table);
1103 struct ctl_table_header *register_sysctl_table(struct ctl_table * table);
1104 struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
1105 struct ctl_table *table);
1106
1107 void unregister_sysctl_table(struct ctl_table_header * table);
1108 int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table);
1109
1110 #endif /* __KERNEL__ */
1111
1112 #endif /* _LINUX_SYSCTL_H */
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