2 * sysctl.h: General linux system control interface
4 * Begun 24 March 1995, Stephen Tweedie
6 ****************************************************************
7 ****************************************************************
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.
14 ****************************************************************
15 ****************************************************************
18 #ifndef _LINUX_SYSCTL_H
19 #define _LINUX_SYSCTL_H
21 #include <linux/kernel.h>
22 #include <linux/types.h>
23 #include <linux/list.h>
24 #include <linux/compiler.h>
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? */
33 struct __sysctl_args {
37 size_t __user *oldlenp;
40 unsigned long __unused[4];
43 /* Define sysctl names first */
45 /* Top-level names: */
47 /* For internal pattern-matching use only: */
49 #define CTL_ANY -1 /* Matches any name */
55 CTL_KERN=1, /* General kernel info and control */
56 CTL_VM=2, /* VM management */
57 CTL_NET=3, /* Networking */
58 CTL_PROC=4, /* Process info */
59 CTL_FS=5, /* Filesystems */
60 CTL_DEBUG=6, /* Debugging */
61 CTL_DEV=7, /* Devices */
62 CTL_BUS=8, /* Busses */
63 CTL_ABI=9, /* Binary emulation */
64 CTL_CPU=10 /* CPU stuff (speed scaling, etc) */
70 CTL_BUS_ISA=1 /* ISA */
76 KERN_OSTYPE=1, /* string: system version */
77 KERN_OSRELEASE=2, /* string: system release */
78 KERN_OSREV=3, /* int: system revision */
79 KERN_VERSION=4, /* string: compile time info */
80 KERN_SECUREMASK=5, /* struct: maximum rights mask */
81 KERN_PROF=6, /* table: profiling information */
85 KERN_CAP_BSET=14, /* int: capability bounding set */
86 KERN_PANIC=15, /* int: panic timeout */
87 KERN_REALROOTDEV=16, /* real root device to mount after initrd */
89 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
90 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
91 KERN_PRINTK=23, /* struct: control printk logging parameters */
92 KERN_NAMETRANS=24, /* Name translation */
93 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
94 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
95 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
98 KERN_ACCT=30, /* BSD process accounting parameters */
99 KERN_PPC_L2CR=31, /* l2cr register on PPC */
101 KERN_RTSIGNR=32, /* Number of rt sigs queued */
102 KERN_RTSIGMAX=33, /* Max queuable */
104 KERN_SHMMAX=34, /* long: Maximum shared memory segment */
105 KERN_MSGMAX=35, /* int: Maximum size of a messege */
106 KERN_MSGMNB=36, /* int: Maximum message queue size */
107 KERN_MSGPOOL=37, /* int: Maximum system message pool size */
108 KERN_SYSRQ=38, /* int: Sysreq enable */
109 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
110 KERN_RANDOM=40, /* Random driver */
111 KERN_SHMALL=41, /* int: Maximum size of shared memory */
112 KERN_MSGMNI=42, /* int: msg queue identifiers */
113 KERN_SEM=43, /* struct: sysv semaphore limits */
114 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
115 KERN_SHMMNI=45, /* int: shm array identifiers */
116 KERN_OVERFLOWUID=46, /* int: overflow UID */
117 KERN_OVERFLOWGID=47, /* int: overflow GID */
118 KERN_SHMPATH=48, /* string: path to shm fs */
119 KERN_HOTPLUG=49, /* string: path to hotplug policy agent */
120 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
121 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
122 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
123 KERN_TAINTED=53, /* int: various kernel tainted flags */
124 KERN_CADPID=54, /* int: PID of the process to notify on CAD */
125 KERN_PIDMAX=55, /* int: PID # limit */
126 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
127 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
128 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
129 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
130 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
131 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
132 KERN_KDB=60, /* int: kdb on/off */
139 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
140 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
141 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
142 VM_UNUSED4=4, /* Spare */
143 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
144 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
145 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
146 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
147 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
148 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
149 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
150 VM_DIRTY_RATIO=12, /* dirty_ratio */
151 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
152 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
153 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
154 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
155 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
156 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
157 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
158 VM_LOWER_ZONE_PROTECTION=20,/* Amount of protection of lower zones */
159 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
185 /* /proc/sys/kernel/random */
189 RANDOM_ENTROPY_COUNT=2,
190 RANDOM_READ_THRESH=3,
191 RANDOM_WRITE_THRESH=4,
196 /* /proc/sys/bus/isa */
204 /* /proc/sys/net/core */
209 NET_CORE_WMEM_DEFAULT=3,
210 NET_CORE_RMEM_DEFAULT=4,
211 /* was NET_CORE_DESTROY_DELAY */
212 NET_CORE_MAX_BACKLOG=6,
213 NET_CORE_FASTROUTE=7,
215 NET_CORE_MSG_BURST=9,
216 NET_CORE_OPTMEM_MAX=10,
217 NET_CORE_HOT_LIST_LENGTH=11,
218 NET_CORE_DIVERT_VERSION=12,
219 NET_CORE_NO_CONG_THRESH=13,
222 NET_CORE_MOD_CONG=16,
223 NET_CORE_DEV_WEIGHT=17,
224 NET_CORE_SOMAXCONN=18,
227 /* /proc/sys/net/ethernet */
229 /* /proc/sys/net/802 */
231 /* /proc/sys/net/unix */
235 NET_UNIX_DESTROY_DELAY=1,
236 NET_UNIX_DELETE_DELAY=2,
237 NET_UNIX_MAX_DGRAM_QLEN=3,
240 /* /proc/sys/net/ipv4 */
243 /* v2.0 compatibile variables */
250 NET_IPV4_FIB_HASH=19,
251 NET_IPV4_NETFILTER=20,
253 NET_IPV4_TCP_TIMESTAMPS=33,
254 NET_IPV4_TCP_WINDOW_SCALING=34,
255 NET_IPV4_TCP_SACK=35,
256 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
257 NET_IPV4_DEFAULT_TTL=37,
258 NET_IPV4_AUTOCONFIG=38,
259 NET_IPV4_NO_PMTU_DISC=39,
260 NET_IPV4_TCP_SYN_RETRIES=40,
261 NET_IPV4_IPFRAG_HIGH_THRESH=41,
262 NET_IPV4_IPFRAG_LOW_THRESH=42,
263 NET_IPV4_IPFRAG_TIME=43,
264 NET_IPV4_TCP_MAX_KA_PROBES=44,
265 NET_IPV4_TCP_KEEPALIVE_TIME=45,
266 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
267 NET_IPV4_TCP_RETRIES1=47,
268 NET_IPV4_TCP_RETRIES2=48,
269 NET_IPV4_TCP_FIN_TIMEOUT=49,
270 NET_IPV4_IP_MASQ_DEBUG=50,
271 NET_TCP_SYNCOOKIES=51,
274 NET_TCP_SYN_TAILDROP=54,
275 NET_TCP_MAX_SYN_BACKLOG=55,
276 NET_IPV4_LOCAL_PORT_RANGE=56,
277 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
278 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
279 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
280 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
281 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
282 NET_IPV4_ICMP_PARAMPROB_RATE=62,
283 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
284 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
285 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
286 NET_TCP_TW_RECYCLE=66,
287 NET_IPV4_ALWAYS_DEFRAG=67,
288 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
289 NET_IPV4_INET_PEER_THRESHOLD=69,
290 NET_IPV4_INET_PEER_MINTTL=70,
291 NET_IPV4_INET_PEER_MAXTTL=71,
292 NET_IPV4_INET_PEER_GC_MINTIME=72,
293 NET_IPV4_INET_PEER_GC_MAXTIME=73,
294 NET_TCP_ORPHAN_RETRIES=74,
295 NET_TCP_ABORT_ON_OVERFLOW=75,
296 NET_TCP_SYNACK_RETRIES=76,
297 NET_TCP_MAX_ORPHANS=77,
298 NET_TCP_MAX_TW_BUCKETS=78,
300 NET_TCP_REORDERING=80,
307 NET_TCP_ADV_WIN_SCALE=87,
308 NET_IPV4_NONLOCAL_BIND=88,
309 NET_IPV4_ICMP_RATELIMIT=89,
310 NET_IPV4_ICMP_RATEMASK=90,
313 NET_TCP_LOW_LATENCY=93,
314 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
319 NET_IPV4_ROUTE_FLUSH=1,
320 NET_IPV4_ROUTE_MIN_DELAY=2,
321 NET_IPV4_ROUTE_MAX_DELAY=3,
322 NET_IPV4_ROUTE_GC_THRESH=4,
323 NET_IPV4_ROUTE_MAX_SIZE=5,
324 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
325 NET_IPV4_ROUTE_GC_TIMEOUT=7,
326 NET_IPV4_ROUTE_GC_INTERVAL=8,
327 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
328 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
329 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
330 NET_IPV4_ROUTE_ERROR_COST=12,
331 NET_IPV4_ROUTE_ERROR_BURST=13,
332 NET_IPV4_ROUTE_GC_ELASTICITY=14,
333 NET_IPV4_ROUTE_MTU_EXPIRES=15,
334 NET_IPV4_ROUTE_MIN_PMTU=16,
335 NET_IPV4_ROUTE_MIN_ADVMSS=17,
336 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
341 NET_PROTO_CONF_ALL=-2,
342 NET_PROTO_CONF_DEFAULT=-3
344 /* And device ifindices ... */
349 NET_IPV4_CONF_FORWARDING=1,
350 NET_IPV4_CONF_MC_FORWARDING=2,
351 NET_IPV4_CONF_PROXY_ARP=3,
352 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
353 NET_IPV4_CONF_SECURE_REDIRECTS=5,
354 NET_IPV4_CONF_SEND_REDIRECTS=6,
355 NET_IPV4_CONF_SHARED_MEDIA=7,
356 NET_IPV4_CONF_RP_FILTER=8,
357 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
358 NET_IPV4_CONF_BOOTP_RELAY=10,
359 NET_IPV4_CONF_LOG_MARTIANS=11,
360 NET_IPV4_CONF_TAG=12,
361 NET_IPV4_CONF_ARPFILTER=13,
362 NET_IPV4_CONF_MEDIUM_ID=14,
363 NET_IPV4_CONF_NOXFRM=15,
364 NET_IPV4_CONF_NOPOLICY=16,
365 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
366 NET_IPV4_CONF_ARP_ANNOUNCE=18,
367 NET_IPV4_CONF_ARP_IGNORE=19,
370 /* /proc/sys/net/ipv4/netfilter */
373 NET_IPV4_NF_CONNTRACK_MAX=1,
374 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
375 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
376 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
377 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
378 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
379 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
380 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
381 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
382 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
383 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
384 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
385 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
388 /* /proc/sys/net/ipv6 */
394 NET_IPV6_BINDV6ONLY=20,
395 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
396 NET_IPV6_IP6FRAG_LOW_THRESH=22,
397 NET_IPV6_IP6FRAG_TIME=23,
398 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24
402 NET_IPV6_ROUTE_FLUSH=1,
403 NET_IPV6_ROUTE_GC_THRESH=2,
404 NET_IPV6_ROUTE_MAX_SIZE=3,
405 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
406 NET_IPV6_ROUTE_GC_TIMEOUT=5,
407 NET_IPV6_ROUTE_GC_INTERVAL=6,
408 NET_IPV6_ROUTE_GC_ELASTICITY=7,
409 NET_IPV6_ROUTE_MTU_EXPIRES=8,
410 NET_IPV6_ROUTE_MIN_ADVMSS=9
414 NET_IPV6_FORWARDING=1,
415 NET_IPV6_HOP_LIMIT=2,
417 NET_IPV6_ACCEPT_RA=4,
418 NET_IPV6_ACCEPT_REDIRECTS=5,
420 NET_IPV6_DAD_TRANSMITS=7,
421 NET_IPV6_RTR_SOLICITS=8,
422 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
423 NET_IPV6_RTR_SOLICIT_DELAY=10,
424 NET_IPV6_USE_TEMPADDR=11,
425 NET_IPV6_TEMP_VALID_LFT=12,
426 NET_IPV6_TEMP_PREFERED_LFT=13,
427 NET_IPV6_REGEN_MAX_RETRY=14,
428 NET_IPV6_MAX_DESYNC_FACTOR=15,
429 NET_IPV6_MAX_ADDRESSES=16,
430 NET_IPV6_FORCE_MLD_VERSION=17
433 /* /proc/sys/net/ipv6/icmp */
435 NET_IPV6_ICMP_RATELIMIT=1
438 /* /proc/sys/net/<protocol>/neigh/<dev> */
440 NET_NEIGH_MCAST_SOLICIT=1,
441 NET_NEIGH_UCAST_SOLICIT=2,
442 NET_NEIGH_APP_SOLICIT=3,
443 NET_NEIGH_RETRANS_TIME=4,
444 NET_NEIGH_REACHABLE_TIME=5,
445 NET_NEIGH_DELAY_PROBE_TIME=6,
446 NET_NEIGH_GC_STALE_TIME=7,
447 NET_NEIGH_UNRES_QLEN=8,
448 NET_NEIGH_PROXY_QLEN=9,
449 NET_NEIGH_ANYCAST_DELAY=10,
450 NET_NEIGH_PROXY_DELAY=11,
451 NET_NEIGH_LOCKTIME=12,
452 NET_NEIGH_GC_INTERVAL=13,
453 NET_NEIGH_GC_THRESH1=14,
454 NET_NEIGH_GC_THRESH2=15,
455 NET_NEIGH_GC_THRESH3=16
458 /* /proc/sys/net/ipx */
460 NET_IPX_PPROP_BROADCASTING=1,
465 /* /proc/sys/net/appletalk */
467 NET_ATALK_AARP_EXPIRY_TIME=1,
468 NET_ATALK_AARP_TICK_TIME=2,
469 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
470 NET_ATALK_AARP_RESOLVE_TIME=4
474 /* /proc/sys/net/netrom */
476 NET_NETROM_DEFAULT_PATH_QUALITY=1,
477 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
478 NET_NETROM_NETWORK_TTL_INITIALISER=3,
479 NET_NETROM_TRANSPORT_TIMEOUT=4,
480 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
481 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
482 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
483 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
484 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
485 NET_NETROM_ROUTING_CONTROL=10,
486 NET_NETROM_LINK_FAILS_COUNT=11
489 /* /proc/sys/net/ax25 */
491 NET_AX25_IP_DEFAULT_MODE=1,
492 NET_AX25_DEFAULT_MODE=2,
493 NET_AX25_BACKOFF_TYPE=3,
494 NET_AX25_CONNECT_MODE=4,
495 NET_AX25_STANDARD_WINDOW=5,
496 NET_AX25_EXTENDED_WINDOW=6,
497 NET_AX25_T1_TIMEOUT=7,
498 NET_AX25_T2_TIMEOUT=8,
499 NET_AX25_T3_TIMEOUT=9,
500 NET_AX25_IDLE_TIMEOUT=10,
503 NET_AX25_PROTOCOL=13,
504 NET_AX25_DAMA_SLAVE_TIMEOUT=14
507 /* /proc/sys/net/rose */
509 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
510 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
511 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
512 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
513 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
514 NET_ROSE_ROUTING_CONTROL=6,
515 NET_ROSE_LINK_FAIL_TIMEOUT=7,
517 NET_ROSE_WINDOW_SIZE=9,
518 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
521 /* /proc/sys/net/x25 */
523 NET_X25_RESTART_REQUEST_TIMEOUT=1,
524 NET_X25_CALL_REQUEST_TIMEOUT=2,
525 NET_X25_RESET_REQUEST_TIMEOUT=3,
526 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
527 NET_X25_ACK_HOLD_BACK_TIMEOUT=5
530 /* /proc/sys/net/token-ring */
536 /* /proc/sys/net/decnet/ */
538 NET_DECNET_NODE_TYPE = 1,
539 NET_DECNET_NODE_ADDRESS = 2,
540 NET_DECNET_NODE_NAME = 3,
541 NET_DECNET_DEFAULT_DEVICE = 4,
542 NET_DECNET_TIME_WAIT = 5,
543 NET_DECNET_DN_COUNT = 6,
544 NET_DECNET_DI_COUNT = 7,
545 NET_DECNET_DR_COUNT = 8,
546 NET_DECNET_DST_GC_INTERVAL = 9,
547 NET_DECNET_CONF = 10,
548 NET_DECNET_NO_FC_MAX_CWND = 11,
549 NET_DECNET_DEBUG_LEVEL = 255
552 /* /proc/sys/net/decnet/conf/<dev> */
554 NET_DECNET_CONF_LOOPBACK = -2,
555 NET_DECNET_CONF_DDCMP = -3,
556 NET_DECNET_CONF_PPP = -4,
557 NET_DECNET_CONF_X25 = -5,
558 NET_DECNET_CONF_GRE = -6,
559 NET_DECNET_CONF_ETHER = -7
561 /* ... and ifindex of devices */
564 /* /proc/sys/net/decnet/conf/<dev>/ */
566 NET_DECNET_CONF_DEV_PRIORITY = 1,
567 NET_DECNET_CONF_DEV_T1 = 2,
568 NET_DECNET_CONF_DEV_T2 = 3,
569 NET_DECNET_CONF_DEV_T3 = 4,
570 NET_DECNET_CONF_DEV_FORWARDING = 5,
571 NET_DECNET_CONF_DEV_BLKSIZE = 6,
572 NET_DECNET_CONF_DEV_STATE = 7
575 /* /proc/sys/net/sctp */
577 NET_SCTP_RTO_INITIAL = 1,
578 NET_SCTP_RTO_MIN = 2,
579 NET_SCTP_RTO_MAX = 3,
580 NET_SCTP_RTO_ALPHA = 4,
581 NET_SCTP_RTO_BETA = 5,
582 NET_SCTP_VALID_COOKIE_LIFE = 6,
583 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
584 NET_SCTP_PATH_MAX_RETRANS = 8,
585 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
586 NET_SCTP_HB_INTERVAL = 10,
587 NET_SCTP_PRESERVE_ENABLE = 11,
588 NET_SCTP_MAX_BURST = 12,
589 NET_SCTP_ADDIP_ENABLE = 13,
594 /* /proc/sys/net/bridge */
596 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
597 NET_BRIDGE_NF_CALL_IPTABLES = 2,
598 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
599 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
602 /* CTL_PROC names: */
607 FS_NRINODE=1, /* int:current number of allocated inodes */
609 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
610 FS_NRDQUOT=4, /* int:current number of allocated dquots */
611 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
612 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
613 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
615 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
616 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
617 FS_OVERFLOWUID=11, /* int: overflow UID */
618 FS_OVERFLOWGID=12, /* int: overflow GID */
619 FS_LEASES=13, /* int: leases enabled */
620 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
621 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
622 FS_DQSTATS=16, /* disc quota usage statistics */
623 FS_XFS=17, /* struct: control xfs parameters */
624 FS_AIO_NR=18, /* current system-wide number of aio requests */
625 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
628 /* /proc/sys/fs/quota/ */
634 FS_DQ_CACHE_HITS = 5,
640 /* CTL_DEBUG names: */
652 /* /proc/sys/dev/cdrom */
655 DEV_CDROM_AUTOCLOSE=2,
656 DEV_CDROM_AUTOEJECT=3,
659 DEV_CDROM_CHECK_MEDIA=6
662 /* /proc/sys/dev/parport */
664 DEV_PARPORT_DEFAULT=-3
667 /* /proc/sys/dev/raid */
669 DEV_RAID_SPEED_LIMIT_MIN=1,
670 DEV_RAID_SPEED_LIMIT_MAX=2
673 /* /proc/sys/dev/parport/default */
675 DEV_PARPORT_DEFAULT_TIMESLICE=1,
676 DEV_PARPORT_DEFAULT_SPINTIME=2
679 /* /proc/sys/dev/parport/parport n */
681 DEV_PARPORT_SPINTIME=1,
682 DEV_PARPORT_BASE_ADDR=2,
686 DEV_PARPORT_DEVICES=6,
687 DEV_PARPORT_AUTOPROBE=16
690 /* /proc/sys/dev/parport/parport n/devices/ */
692 DEV_PARPORT_DEVICES_ACTIVE=-3,
695 /* /proc/sys/dev/parport/parport n/devices/device n */
697 DEV_PARPORT_DEVICE_TIMESLICE=1,
700 /* /proc/sys/dev/mac_hid */
702 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
703 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
704 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
705 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
706 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
707 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
710 /* /proc/sys/dev/scsi */
712 DEV_SCSI_LOGGING_LEVEL=1,
718 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
719 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
720 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
721 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
722 ABI_TRACE=5, /* tracing flags */
723 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
728 extern asmlinkage long sys_sysctl(struct __sysctl_args __user *);
729 extern void sysctl_init(void);
731 typedef struct ctl_table ctl_table;
733 typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
734 void __user *oldval, size_t __user *oldlenp,
735 void __user *newval, size_t newlen,
738 typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
739 void __user *buffer, size_t *lenp);
741 extern int proc_dostring(ctl_table *, int, struct file *,
742 void __user *, size_t *);
743 extern int proc_dointvec(ctl_table *, int, struct file *,
744 void __user *, size_t *);
745 extern int proc_dointvec_bset(ctl_table *, int, struct file *,
746 void __user *, size_t *);
747 extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
748 void __user *, size_t *);
749 extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
750 void __user *, size_t *);
751 extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
752 void __user *, size_t *);
753 extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
754 void __user *, size_t *);
755 extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
756 struct file *, void __user *, size_t *);
758 extern int do_sysctl (int __user *name, int nlen,
759 void __user *oldval, size_t __user *oldlenp,
760 void __user *newval, size_t newlen);
762 extern int do_sysctl_strategy (ctl_table *table,
763 int __user *name, int nlen,
764 void __user *oldval, size_t __user *oldlenp,
765 void __user *newval, size_t newlen, void ** context);
767 extern ctl_handler sysctl_string;
768 extern ctl_handler sysctl_intvec;
769 extern ctl_handler sysctl_jiffies;
773 * Register a set of sysctl names by calling register_sysctl_table
774 * with an initialised array of ctl_table's. An entry with zero
775 * ctl_name terminates the table. table->de will be set up by the
776 * registration and need not be initialised in advance.
778 * sysctl names can be mirrored automatically under /proc/sys. The
779 * procname supplied controls /proc naming.
781 * The table's mode will be honoured both for sys_sysctl(2) and
784 * Leaf nodes in the sysctl tree will be represented by a single file
785 * under /proc; non-leaf nodes will be represented by directories. A
786 * null procname disables /proc mirroring at this node.
788 * sysctl(2) can automatically manage read and write requests through
789 * the sysctl table. The data and maxlen fields of the ctl_table
790 * struct enable minimal validation of the values being written to be
791 * performed, and the mode field allows minimal authentication.
793 * More sophisticated management can be enabled by the provision of a
794 * strategy routine with the table entry. This will be called before
795 * any automatic read or write of the data is performed.
797 * The strategy routine may return:
798 * <0: Error occurred (error is passed to user process)
799 * 0: OK - proceed with automatic read or write.
800 * >0: OK - read or write has been done by the strategy routine, so
801 * return immediately.
803 * There must be a proc_handler routine for any terminal nodes
804 * mirrored under /proc/sys (non-terminals are handled by a built-in
805 * directory handler). Several default handlers are available to
806 * cover common cases.
809 /* A sysctl table is an array of struct ctl_table: */
812 int ctl_name; /* Binary ID */
813 const char *procname; /* Text ID for /proc/sys, or zero */
818 proc_handler *proc_handler; /* Callback for text formatting */
819 ctl_handler *strategy; /* Callback function for all r/w */
820 struct proc_dir_entry *de; /* /proc control block */
825 /* struct ctl_table_header is used to maintain dynamic lists of
827 struct ctl_table_header
829 ctl_table *ctl_table;
830 struct list_head ctl_entry;
833 struct ctl_table_header * register_sysctl_table(ctl_table * table,
835 void unregister_sysctl_table(struct ctl_table_header * table);
837 #else /* __KERNEL__ */
839 #endif /* __KERNEL__ */
841 #endif /* _LINUX_SYSCTL_H */