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_PTY=62, /* dir: pty driver */
133 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
134 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
135 KERN_HZ_TIMER=65, /* int: hz timer on or off */
136 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
137 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
138 KERN_RANDOMIZE=68, /* int: randomize virtual address space */
145 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
146 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
147 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
148 VM_UNUSED4=4, /* Spare */
149 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
150 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
151 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
152 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
153 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
154 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
155 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
156 VM_DIRTY_RATIO=12, /* dirty_ratio */
157 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
158 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
159 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
160 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
161 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
162 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
163 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
164 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
165 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
166 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
167 VM_LAPTOP_MODE=23, /* vm laptop mode */
168 VM_BLOCK_DUMP=24, /* block dump mode */
169 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
170 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
171 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
172 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
198 /* /proc/sys/kernel/random */
202 RANDOM_ENTROPY_COUNT=2,
203 RANDOM_READ_THRESH=3,
204 RANDOM_WRITE_THRESH=4,
209 /* /proc/sys/kernel/pty */
216 /* /proc/sys/bus/isa */
224 /* /proc/sys/net/core */
229 NET_CORE_WMEM_DEFAULT=3,
230 NET_CORE_RMEM_DEFAULT=4,
231 /* was NET_CORE_DESTROY_DELAY */
232 NET_CORE_MAX_BACKLOG=6,
233 NET_CORE_FASTROUTE=7,
235 NET_CORE_MSG_BURST=9,
236 NET_CORE_OPTMEM_MAX=10,
237 NET_CORE_HOT_LIST_LENGTH=11,
238 NET_CORE_DIVERT_VERSION=12,
239 NET_CORE_NO_CONG_THRESH=13,
242 NET_CORE_MOD_CONG=16,
243 NET_CORE_DEV_WEIGHT=17,
244 NET_CORE_SOMAXCONN=18,
247 /* /proc/sys/net/ethernet */
249 /* /proc/sys/net/802 */
251 /* /proc/sys/net/unix */
255 NET_UNIX_DESTROY_DELAY=1,
256 NET_UNIX_DELETE_DELAY=2,
257 NET_UNIX_MAX_DGRAM_QLEN=3,
260 /* /proc/sys/net/ipv4 */
263 /* v2.0 compatibile variables */
270 NET_IPV4_FIB_HASH=19,
271 NET_IPV4_NETFILTER=20,
273 NET_IPV4_TCP_TIMESTAMPS=33,
274 NET_IPV4_TCP_WINDOW_SCALING=34,
275 NET_IPV4_TCP_SACK=35,
276 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
277 NET_IPV4_DEFAULT_TTL=37,
278 NET_IPV4_AUTOCONFIG=38,
279 NET_IPV4_NO_PMTU_DISC=39,
280 NET_IPV4_TCP_SYN_RETRIES=40,
281 NET_IPV4_IPFRAG_HIGH_THRESH=41,
282 NET_IPV4_IPFRAG_LOW_THRESH=42,
283 NET_IPV4_IPFRAG_TIME=43,
284 NET_IPV4_TCP_MAX_KA_PROBES=44,
285 NET_IPV4_TCP_KEEPALIVE_TIME=45,
286 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
287 NET_IPV4_TCP_RETRIES1=47,
288 NET_IPV4_TCP_RETRIES2=48,
289 NET_IPV4_TCP_FIN_TIMEOUT=49,
290 NET_IPV4_IP_MASQ_DEBUG=50,
291 NET_TCP_SYNCOOKIES=51,
294 NET_TCP_SYN_TAILDROP=54,
295 NET_TCP_MAX_SYN_BACKLOG=55,
296 NET_IPV4_LOCAL_PORT_RANGE=56,
297 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
298 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
299 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
300 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
301 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
302 NET_IPV4_ICMP_PARAMPROB_RATE=62,
303 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
304 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
305 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
306 NET_TCP_TW_RECYCLE=66,
307 NET_IPV4_ALWAYS_DEFRAG=67,
308 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
309 NET_IPV4_INET_PEER_THRESHOLD=69,
310 NET_IPV4_INET_PEER_MINTTL=70,
311 NET_IPV4_INET_PEER_MAXTTL=71,
312 NET_IPV4_INET_PEER_GC_MINTIME=72,
313 NET_IPV4_INET_PEER_GC_MAXTIME=73,
314 NET_TCP_ORPHAN_RETRIES=74,
315 NET_TCP_ABORT_ON_OVERFLOW=75,
316 NET_TCP_SYNACK_RETRIES=76,
317 NET_TCP_MAX_ORPHANS=77,
318 NET_TCP_MAX_TW_BUCKETS=78,
320 NET_TCP_REORDERING=80,
327 NET_TCP_ADV_WIN_SCALE=87,
328 NET_IPV4_NONLOCAL_BIND=88,
329 NET_IPV4_ICMP_RATELIMIT=89,
330 NET_IPV4_ICMP_RATEMASK=90,
333 NET_TCP_LOW_LATENCY=93,
334 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
336 NET_IPV4_IGMP_MAX_MSF=96,
337 NET_TCP_NO_METRICS_SAVE=97,
339 NET_TCP_VEGAS_ALPHA=99,
340 NET_TCP_VEGAS_BETA=100,
341 NET_TCP_VEGAS_GAMMA=101,
343 NET_TCP_BIC_FAST_CONVERGENCE=103,
344 NET_TCP_BIC_LOW_WINDOW=104,
345 NET_TCP_DEFAULT_WIN_SCALE=105,
346 NET_TCP_MODERATE_RCVBUF=106,
347 NET_TCP_TSO_WIN_DIVISOR=107,
348 NET_TCP_BIC_BETA=108,
352 NET_IPV4_ROUTE_FLUSH=1,
353 NET_IPV4_ROUTE_MIN_DELAY=2,
354 NET_IPV4_ROUTE_MAX_DELAY=3,
355 NET_IPV4_ROUTE_GC_THRESH=4,
356 NET_IPV4_ROUTE_MAX_SIZE=5,
357 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
358 NET_IPV4_ROUTE_GC_TIMEOUT=7,
359 NET_IPV4_ROUTE_GC_INTERVAL=8,
360 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
361 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
362 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
363 NET_IPV4_ROUTE_ERROR_COST=12,
364 NET_IPV4_ROUTE_ERROR_BURST=13,
365 NET_IPV4_ROUTE_GC_ELASTICITY=14,
366 NET_IPV4_ROUTE_MTU_EXPIRES=15,
367 NET_IPV4_ROUTE_MIN_PMTU=16,
368 NET_IPV4_ROUTE_MIN_ADVMSS=17,
369 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
370 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
375 NET_PROTO_CONF_ALL=-2,
376 NET_PROTO_CONF_DEFAULT=-3
378 /* And device ifindices ... */
383 NET_IPV4_CONF_FORWARDING=1,
384 NET_IPV4_CONF_MC_FORWARDING=2,
385 NET_IPV4_CONF_PROXY_ARP=3,
386 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
387 NET_IPV4_CONF_SECURE_REDIRECTS=5,
388 NET_IPV4_CONF_SEND_REDIRECTS=6,
389 NET_IPV4_CONF_SHARED_MEDIA=7,
390 NET_IPV4_CONF_RP_FILTER=8,
391 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
392 NET_IPV4_CONF_BOOTP_RELAY=10,
393 NET_IPV4_CONF_LOG_MARTIANS=11,
394 NET_IPV4_CONF_TAG=12,
395 NET_IPV4_CONF_ARPFILTER=13,
396 NET_IPV4_CONF_MEDIUM_ID=14,
397 NET_IPV4_CONF_NOXFRM=15,
398 NET_IPV4_CONF_NOPOLICY=16,
399 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
400 NET_IPV4_CONF_ARP_ANNOUNCE=18,
401 NET_IPV4_CONF_ARP_IGNORE=19,
405 /* /proc/sys/net/ipv4/netfilter */
408 NET_IPV4_NF_CONNTRACK_MAX=1,
409 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
410 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
411 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
412 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
413 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
414 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
415 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
416 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
417 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
418 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
419 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
420 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
421 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
422 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
423 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
424 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
425 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
426 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
427 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
428 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
429 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
430 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
431 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
432 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
433 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
434 NET_IPV4_NF_CONNTRACK_COUNT=27,
437 /* /proc/sys/net/ipv6 */
443 NET_IPV6_BINDV6ONLY=20,
444 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
445 NET_IPV6_IP6FRAG_LOW_THRESH=22,
446 NET_IPV6_IP6FRAG_TIME=23,
447 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
448 NET_IPV6_MLD_MAX_MSF=25,
452 NET_IPV6_ROUTE_FLUSH=1,
453 NET_IPV6_ROUTE_GC_THRESH=2,
454 NET_IPV6_ROUTE_MAX_SIZE=3,
455 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
456 NET_IPV6_ROUTE_GC_TIMEOUT=5,
457 NET_IPV6_ROUTE_GC_INTERVAL=6,
458 NET_IPV6_ROUTE_GC_ELASTICITY=7,
459 NET_IPV6_ROUTE_MTU_EXPIRES=8,
460 NET_IPV6_ROUTE_MIN_ADVMSS=9,
461 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
465 NET_IPV6_FORWARDING=1,
466 NET_IPV6_HOP_LIMIT=2,
468 NET_IPV6_ACCEPT_RA=4,
469 NET_IPV6_ACCEPT_REDIRECTS=5,
471 NET_IPV6_DAD_TRANSMITS=7,
472 NET_IPV6_RTR_SOLICITS=8,
473 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
474 NET_IPV6_RTR_SOLICIT_DELAY=10,
475 NET_IPV6_USE_TEMPADDR=11,
476 NET_IPV6_TEMP_VALID_LFT=12,
477 NET_IPV6_TEMP_PREFERED_LFT=13,
478 NET_IPV6_REGEN_MAX_RETRY=14,
479 NET_IPV6_MAX_DESYNC_FACTOR=15,
480 NET_IPV6_MAX_ADDRESSES=16,
481 NET_IPV6_FORCE_MLD_VERSION=17,
485 /* /proc/sys/net/ipv6/icmp */
487 NET_IPV6_ICMP_RATELIMIT=1
490 /* /proc/sys/net/<protocol>/neigh/<dev> */
492 NET_NEIGH_MCAST_SOLICIT=1,
493 NET_NEIGH_UCAST_SOLICIT=2,
494 NET_NEIGH_APP_SOLICIT=3,
495 NET_NEIGH_RETRANS_TIME=4,
496 NET_NEIGH_REACHABLE_TIME=5,
497 NET_NEIGH_DELAY_PROBE_TIME=6,
498 NET_NEIGH_GC_STALE_TIME=7,
499 NET_NEIGH_UNRES_QLEN=8,
500 NET_NEIGH_PROXY_QLEN=9,
501 NET_NEIGH_ANYCAST_DELAY=10,
502 NET_NEIGH_PROXY_DELAY=11,
503 NET_NEIGH_LOCKTIME=12,
504 NET_NEIGH_GC_INTERVAL=13,
505 NET_NEIGH_GC_THRESH1=14,
506 NET_NEIGH_GC_THRESH2=15,
507 NET_NEIGH_GC_THRESH3=16,
508 NET_NEIGH_RETRANS_TIME_MS=17,
509 NET_NEIGH_REACHABLE_TIME_MS=18,
513 /* /proc/sys/net/ipx */
515 NET_IPX_PPROP_BROADCASTING=1,
520 /* /proc/sys/net/appletalk */
522 NET_ATALK_AARP_EXPIRY_TIME=1,
523 NET_ATALK_AARP_TICK_TIME=2,
524 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
525 NET_ATALK_AARP_RESOLVE_TIME=4
529 /* /proc/sys/net/netrom */
531 NET_NETROM_DEFAULT_PATH_QUALITY=1,
532 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
533 NET_NETROM_NETWORK_TTL_INITIALISER=3,
534 NET_NETROM_TRANSPORT_TIMEOUT=4,
535 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
536 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
537 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
538 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
539 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
540 NET_NETROM_ROUTING_CONTROL=10,
541 NET_NETROM_LINK_FAILS_COUNT=11
544 /* /proc/sys/net/ax25 */
546 NET_AX25_IP_DEFAULT_MODE=1,
547 NET_AX25_DEFAULT_MODE=2,
548 NET_AX25_BACKOFF_TYPE=3,
549 NET_AX25_CONNECT_MODE=4,
550 NET_AX25_STANDARD_WINDOW=5,
551 NET_AX25_EXTENDED_WINDOW=6,
552 NET_AX25_T1_TIMEOUT=7,
553 NET_AX25_T2_TIMEOUT=8,
554 NET_AX25_T3_TIMEOUT=9,
555 NET_AX25_IDLE_TIMEOUT=10,
558 NET_AX25_PROTOCOL=13,
559 NET_AX25_DAMA_SLAVE_TIMEOUT=14
562 /* /proc/sys/net/rose */
564 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
565 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
566 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
567 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
568 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
569 NET_ROSE_ROUTING_CONTROL=6,
570 NET_ROSE_LINK_FAIL_TIMEOUT=7,
572 NET_ROSE_WINDOW_SIZE=9,
573 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
576 /* /proc/sys/net/x25 */
578 NET_X25_RESTART_REQUEST_TIMEOUT=1,
579 NET_X25_CALL_REQUEST_TIMEOUT=2,
580 NET_X25_RESET_REQUEST_TIMEOUT=3,
581 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
582 NET_X25_ACK_HOLD_BACK_TIMEOUT=5
585 /* /proc/sys/net/token-ring */
591 /* /proc/sys/net/decnet/ */
593 NET_DECNET_NODE_TYPE = 1,
594 NET_DECNET_NODE_ADDRESS = 2,
595 NET_DECNET_NODE_NAME = 3,
596 NET_DECNET_DEFAULT_DEVICE = 4,
597 NET_DECNET_TIME_WAIT = 5,
598 NET_DECNET_DN_COUNT = 6,
599 NET_DECNET_DI_COUNT = 7,
600 NET_DECNET_DR_COUNT = 8,
601 NET_DECNET_DST_GC_INTERVAL = 9,
602 NET_DECNET_CONF = 10,
603 NET_DECNET_NO_FC_MAX_CWND = 11,
604 NET_DECNET_DEBUG_LEVEL = 255
607 /* /proc/sys/net/decnet/conf/<dev> */
609 NET_DECNET_CONF_LOOPBACK = -2,
610 NET_DECNET_CONF_DDCMP = -3,
611 NET_DECNET_CONF_PPP = -4,
612 NET_DECNET_CONF_X25 = -5,
613 NET_DECNET_CONF_GRE = -6,
614 NET_DECNET_CONF_ETHER = -7
616 /* ... and ifindex of devices */
619 /* /proc/sys/net/decnet/conf/<dev>/ */
621 NET_DECNET_CONF_DEV_PRIORITY = 1,
622 NET_DECNET_CONF_DEV_T1 = 2,
623 NET_DECNET_CONF_DEV_T2 = 3,
624 NET_DECNET_CONF_DEV_T3 = 4,
625 NET_DECNET_CONF_DEV_FORWARDING = 5,
626 NET_DECNET_CONF_DEV_BLKSIZE = 6,
627 NET_DECNET_CONF_DEV_STATE = 7
630 /* /proc/sys/net/sctp */
632 NET_SCTP_RTO_INITIAL = 1,
633 NET_SCTP_RTO_MIN = 2,
634 NET_SCTP_RTO_MAX = 3,
635 NET_SCTP_RTO_ALPHA = 4,
636 NET_SCTP_RTO_BETA = 5,
637 NET_SCTP_VALID_COOKIE_LIFE = 6,
638 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
639 NET_SCTP_PATH_MAX_RETRANS = 8,
640 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
641 NET_SCTP_HB_INTERVAL = 10,
642 NET_SCTP_PRESERVE_ENABLE = 11,
643 NET_SCTP_MAX_BURST = 12,
644 NET_SCTP_ADDIP_ENABLE = 13,
645 NET_SCTP_PRSCTP_ENABLE = 14,
646 NET_SCTP_SNDBUF_POLICY = 15,
649 /* /proc/sys/net/bridge */
651 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
652 NET_BRIDGE_NF_CALL_IPTABLES = 2,
653 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
654 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
657 /* CTL_PROC names: */
662 FS_NRINODE=1, /* int:current number of allocated inodes */
664 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
665 FS_NRDQUOT=4, /* int:current number of allocated dquots */
666 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
667 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
668 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
670 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
671 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
672 FS_OVERFLOWUID=11, /* int: overflow UID */
673 FS_OVERFLOWGID=12, /* int: overflow GID */
674 FS_LEASES=13, /* int: leases enabled */
675 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
676 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
677 FS_DQSTATS=16, /* disc quota usage statistics and control */
678 FS_XFS=17, /* struct: control xfs parameters */
679 FS_AIO_NR=18, /* current system-wide number of aio requests */
680 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
683 /* /proc/sys/fs/quota/ */
689 FS_DQ_CACHE_HITS = 5,
696 /* CTL_DEBUG names: */
708 /* /proc/sys/dev/cdrom */
711 DEV_CDROM_AUTOCLOSE=2,
712 DEV_CDROM_AUTOEJECT=3,
715 DEV_CDROM_CHECK_MEDIA=6
718 /* /proc/sys/dev/parport */
720 DEV_PARPORT_DEFAULT=-3
723 /* /proc/sys/dev/raid */
725 DEV_RAID_SPEED_LIMIT_MIN=1,
726 DEV_RAID_SPEED_LIMIT_MAX=2
729 /* /proc/sys/dev/parport/default */
731 DEV_PARPORT_DEFAULT_TIMESLICE=1,
732 DEV_PARPORT_DEFAULT_SPINTIME=2
735 /* /proc/sys/dev/parport/parport n */
737 DEV_PARPORT_SPINTIME=1,
738 DEV_PARPORT_BASE_ADDR=2,
742 DEV_PARPORT_DEVICES=6,
743 DEV_PARPORT_AUTOPROBE=16
746 /* /proc/sys/dev/parport/parport n/devices/ */
748 DEV_PARPORT_DEVICES_ACTIVE=-3,
751 /* /proc/sys/dev/parport/parport n/devices/device n */
753 DEV_PARPORT_DEVICE_TIMESLICE=1,
756 /* /proc/sys/dev/mac_hid */
758 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
759 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
760 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
761 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
762 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
763 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
766 /* /proc/sys/dev/scsi */
768 DEV_SCSI_LOGGING_LEVEL=1,
774 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
775 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
776 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
777 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
778 ABI_TRACE=5, /* tracing flags */
779 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
784 extern void sysctl_init(void);
786 typedef struct ctl_table ctl_table;
788 typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
789 void __user *oldval, size_t __user *oldlenp,
790 void __user *newval, size_t newlen,
793 typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
794 void __user *buffer, size_t *lenp, loff_t *ppos);
796 extern int proc_dostring(ctl_table *, int, struct file *,
797 void __user *, size_t *, loff_t *);
798 extern int proc_dointvec(ctl_table *, int, struct file *,
799 void __user *, size_t *, loff_t *);
800 extern int proc_dointvec_bset(ctl_table *, int, struct file *,
801 void __user *, size_t *, loff_t *);
802 extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
803 void __user *, size_t *, loff_t *);
804 extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
805 void __user *, size_t *, loff_t *);
806 extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
807 void __user *, size_t *, loff_t *);
808 extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *,
809 void __user *, size_t *, loff_t *);
810 extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
811 void __user *, size_t *, loff_t *);
812 extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
813 struct file *, void __user *, size_t *, loff_t *);
815 extern int do_sysctl (int __user *name, int nlen,
816 void __user *oldval, size_t __user *oldlenp,
817 void __user *newval, size_t newlen);
819 extern int do_sysctl_strategy (ctl_table *table,
820 int __user *name, int nlen,
821 void __user *oldval, size_t __user *oldlenp,
822 void __user *newval, size_t newlen, void ** context);
824 extern ctl_handler sysctl_string;
825 extern ctl_handler sysctl_intvec;
826 extern ctl_handler sysctl_jiffies;
827 extern ctl_handler sysctl_ms_jiffies;
831 * Register a set of sysctl names by calling register_sysctl_table
832 * with an initialised array of ctl_table's. An entry with zero
833 * ctl_name terminates the table. table->de will be set up by the
834 * registration and need not be initialised in advance.
836 * sysctl names can be mirrored automatically under /proc/sys. The
837 * procname supplied controls /proc naming.
839 * The table's mode will be honoured both for sys_sysctl(2) and
842 * Leaf nodes in the sysctl tree will be represented by a single file
843 * under /proc; non-leaf nodes will be represented by directories. A
844 * null procname disables /proc mirroring at this node.
846 * sysctl(2) can automatically manage read and write requests through
847 * the sysctl table. The data and maxlen fields of the ctl_table
848 * struct enable minimal validation of the values being written to be
849 * performed, and the mode field allows minimal authentication.
851 * More sophisticated management can be enabled by the provision of a
852 * strategy routine with the table entry. This will be called before
853 * any automatic read or write of the data is performed.
855 * The strategy routine may return:
856 * <0: Error occurred (error is passed to user process)
857 * 0: OK - proceed with automatic read or write.
858 * >0: OK - read or write has been done by the strategy routine, so
859 * return immediately.
861 * There must be a proc_handler routine for any terminal nodes
862 * mirrored under /proc/sys (non-terminals are handled by a built-in
863 * directory handler). Several default handlers are available to
864 * cover common cases.
867 /* A sysctl table is an array of struct ctl_table: */
870 int ctl_name; /* Binary ID */
871 const char *procname; /* Text ID for /proc/sys, or zero */
876 proc_handler *proc_handler; /* Callback for text formatting */
877 ctl_handler *strategy; /* Callback function for all r/w */
878 struct proc_dir_entry *de; /* /proc control block */
883 /* struct ctl_table_header is used to maintain dynamic lists of
885 struct ctl_table_header
887 ctl_table *ctl_table;
888 struct list_head ctl_entry;
891 struct ctl_table_header * register_sysctl_table(ctl_table * table,
893 void unregister_sysctl_table(struct ctl_table_header * table);
895 #else /* __KERNEL__ */
897 #endif /* __KERNEL__ */
899 #endif /* _LINUX_SYSCTL_H */