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_EXEC_SHIELD=1000, /* int: exec-shield enabled (0/1/2) */
88 KERN_PRINT_FATAL=1001, /* int: print fatal signals (0/1/2) */
89 KERN_VDSO=1002, /* int: VDSO enabled (0/1) */
90 KERN_REALROOTDEV=16, /* real root device to mount after initrd */
92 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
93 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
94 KERN_PRINTK=23, /* struct: control printk logging parameters */
95 KERN_NAMETRANS=24, /* Name translation */
96 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
97 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
98 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
101 KERN_ACCT=30, /* BSD process accounting parameters */
102 KERN_PPC_L2CR=31, /* l2cr register on PPC */
104 KERN_RTSIGNR=32, /* Number of rt sigs queued */
105 KERN_RTSIGMAX=33, /* Max queuable */
107 KERN_SHMMAX=34, /* long: Maximum shared memory segment */
108 KERN_MSGMAX=35, /* int: Maximum size of a messege */
109 KERN_MSGMNB=36, /* int: Maximum message queue size */
110 KERN_MSGPOOL=37, /* int: Maximum system message pool size */
111 KERN_SYSRQ=38, /* int: Sysreq enable */
112 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
113 KERN_RANDOM=40, /* Random driver */
114 KERN_SHMALL=41, /* int: Maximum size of shared memory */
115 KERN_MSGMNI=42, /* int: msg queue identifiers */
116 KERN_SEM=43, /* struct: sysv semaphore limits */
117 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
118 KERN_SHMMNI=45, /* int: shm array identifiers */
119 KERN_OVERFLOWUID=46, /* int: overflow UID */
120 KERN_OVERFLOWGID=47, /* int: overflow GID */
121 KERN_SHMPATH=48, /* string: path to shm fs */
122 KERN_HOTPLUG=49, /* string: path to hotplug policy agent */
123 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
124 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
125 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
126 KERN_TAINTED=53, /* int: various kernel tainted flags */
127 KERN_CADPID=54, /* int: PID of the process to notify on CAD */
128 KERN_PIDMAX=55, /* int: PID # limit */
129 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
130 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
131 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
132 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
133 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
134 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
135 KERN_PTY=62, /* dir: pty driver */
136 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
137 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
138 KERN_HZ_TIMER=65, /* int: hz timer on or off */
139 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
140 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
141 KERN_RANDOMIZE=68, /* int: randomize virtual address space */
142 KERN_VSHELPER=69, /* string: path to vshelper policy agent */
149 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
150 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
151 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
152 VM_UNUSED4=4, /* Spare */
153 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
154 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
155 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
156 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
157 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
158 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
159 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
160 VM_DIRTY_RATIO=12, /* dirty_ratio */
161 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
162 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
163 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
164 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
165 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
166 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
167 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
168 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
169 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
170 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
171 VM_LAPTOP_MODE=23, /* vm laptop mode */
172 VM_BLOCK_DUMP=24, /* block dump mode */
173 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
174 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
175 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
176 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
203 /* /proc/sys/kernel/random */
207 RANDOM_ENTROPY_COUNT=2,
208 RANDOM_READ_THRESH=3,
209 RANDOM_WRITE_THRESH=4,
214 /* /proc/sys/kernel/pty */
221 /* /proc/sys/bus/isa */
229 /* /proc/sys/net/core */
234 NET_CORE_WMEM_DEFAULT=3,
235 NET_CORE_RMEM_DEFAULT=4,
236 /* was NET_CORE_DESTROY_DELAY */
237 NET_CORE_MAX_BACKLOG=6,
238 NET_CORE_FASTROUTE=7,
240 NET_CORE_MSG_BURST=9,
241 NET_CORE_OPTMEM_MAX=10,
242 NET_CORE_HOT_LIST_LENGTH=11,
243 NET_CORE_DIVERT_VERSION=12,
244 NET_CORE_NO_CONG_THRESH=13,
247 NET_CORE_MOD_CONG=16,
248 NET_CORE_DEV_WEIGHT=17,
249 NET_CORE_SOMAXCONN=18,
252 /* /proc/sys/net/ethernet */
254 /* /proc/sys/net/802 */
256 /* /proc/sys/net/unix */
260 NET_UNIX_DESTROY_DELAY=1,
261 NET_UNIX_DELETE_DELAY=2,
262 NET_UNIX_MAX_DGRAM_QLEN=3,
265 /* /proc/sys/net/ipv4 */
268 /* v2.0 compatibile variables */
275 NET_IPV4_FIB_HASH=19,
276 NET_IPV4_NETFILTER=20,
278 NET_IPV4_TCP_TIMESTAMPS=33,
279 NET_IPV4_TCP_WINDOW_SCALING=34,
280 NET_IPV4_TCP_SACK=35,
281 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
282 NET_IPV4_DEFAULT_TTL=37,
283 NET_IPV4_AUTOCONFIG=38,
284 NET_IPV4_NO_PMTU_DISC=39,
285 NET_IPV4_TCP_SYN_RETRIES=40,
286 NET_IPV4_IPFRAG_HIGH_THRESH=41,
287 NET_IPV4_IPFRAG_LOW_THRESH=42,
288 NET_IPV4_IPFRAG_TIME=43,
289 NET_IPV4_TCP_MAX_KA_PROBES=44,
290 NET_IPV4_TCP_KEEPALIVE_TIME=45,
291 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
292 NET_IPV4_TCP_RETRIES1=47,
293 NET_IPV4_TCP_RETRIES2=48,
294 NET_IPV4_TCP_FIN_TIMEOUT=49,
295 NET_IPV4_IP_MASQ_DEBUG=50,
296 NET_TCP_SYNCOOKIES=51,
299 NET_TCP_SYN_TAILDROP=54,
300 NET_TCP_MAX_SYN_BACKLOG=55,
301 NET_IPV4_LOCAL_PORT_RANGE=56,
302 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
303 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
304 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
305 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
306 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
307 NET_IPV4_ICMP_PARAMPROB_RATE=62,
308 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
309 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
310 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
311 NET_TCP_TW_RECYCLE=66,
312 NET_IPV4_ALWAYS_DEFRAG=67,
313 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
314 NET_IPV4_INET_PEER_THRESHOLD=69,
315 NET_IPV4_INET_PEER_MINTTL=70,
316 NET_IPV4_INET_PEER_MAXTTL=71,
317 NET_IPV4_INET_PEER_GC_MINTIME=72,
318 NET_IPV4_INET_PEER_GC_MAXTIME=73,
319 NET_TCP_ORPHAN_RETRIES=74,
320 NET_TCP_ABORT_ON_OVERFLOW=75,
321 NET_TCP_SYNACK_RETRIES=76,
322 NET_TCP_MAX_ORPHANS=77,
323 NET_TCP_MAX_TW_BUCKETS=78,
325 NET_TCP_REORDERING=80,
332 NET_TCP_ADV_WIN_SCALE=87,
333 NET_IPV4_NONLOCAL_BIND=88,
334 NET_IPV4_ICMP_RATELIMIT=89,
335 NET_IPV4_ICMP_RATEMASK=90,
338 NET_TCP_LOW_LATENCY=93,
339 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
341 NET_IPV4_IGMP_MAX_MSF=96,
342 NET_TCP_NO_METRICS_SAVE=97,
344 NET_TCP_VEGAS_ALPHA=99,
345 NET_TCP_VEGAS_BETA=100,
346 NET_TCP_VEGAS_GAMMA=101,
348 NET_TCP_BIC_FAST_CONVERGENCE=103,
349 NET_TCP_BIC_LOW_WINDOW=104,
350 NET_TCP_DEFAULT_WIN_SCALE=105,
351 NET_TCP_MODERATE_RCVBUF=106,
352 NET_TCP_TSO_WIN_DIVISOR=107,
353 NET_TCP_BIC_BETA=108,
354 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
355 #ifdef CONFIG_ICMP_IPOD
356 NET_IPV4_ICMP_IPOD_VERSION,
357 NET_IPV4_ICMP_IPOD_ENABLED,
358 NET_IPV4_ICMP_IPOD_HOST,
359 NET_IPV4_ICMP_IPOD_MASK,
360 NET_IPV4_ICMP_IPOD_KEY
365 NET_IPV4_ROUTE_FLUSH=1,
366 NET_IPV4_ROUTE_MIN_DELAY=2,
367 NET_IPV4_ROUTE_MAX_DELAY=3,
368 NET_IPV4_ROUTE_GC_THRESH=4,
369 NET_IPV4_ROUTE_MAX_SIZE=5,
370 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
371 NET_IPV4_ROUTE_GC_TIMEOUT=7,
372 NET_IPV4_ROUTE_GC_INTERVAL=8,
373 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
374 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
375 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
376 NET_IPV4_ROUTE_ERROR_COST=12,
377 NET_IPV4_ROUTE_ERROR_BURST=13,
378 NET_IPV4_ROUTE_GC_ELASTICITY=14,
379 NET_IPV4_ROUTE_MTU_EXPIRES=15,
380 NET_IPV4_ROUTE_MIN_PMTU=16,
381 NET_IPV4_ROUTE_MIN_ADVMSS=17,
382 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
383 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
388 NET_PROTO_CONF_ALL=-2,
389 NET_PROTO_CONF_DEFAULT=-3
391 /* And device ifindices ... */
396 NET_IPV4_CONF_FORWARDING=1,
397 NET_IPV4_CONF_MC_FORWARDING=2,
398 NET_IPV4_CONF_PROXY_ARP=3,
399 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
400 NET_IPV4_CONF_SECURE_REDIRECTS=5,
401 NET_IPV4_CONF_SEND_REDIRECTS=6,
402 NET_IPV4_CONF_SHARED_MEDIA=7,
403 NET_IPV4_CONF_RP_FILTER=8,
404 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
405 NET_IPV4_CONF_BOOTP_RELAY=10,
406 NET_IPV4_CONF_LOG_MARTIANS=11,
407 NET_IPV4_CONF_TAG=12,
408 NET_IPV4_CONF_ARPFILTER=13,
409 NET_IPV4_CONF_MEDIUM_ID=14,
410 NET_IPV4_CONF_NOXFRM=15,
411 NET_IPV4_CONF_NOPOLICY=16,
412 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
413 NET_IPV4_CONF_ARP_ANNOUNCE=18,
414 NET_IPV4_CONF_ARP_IGNORE=19,
415 NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
419 /* /proc/sys/net/ipv4/netfilter */
422 NET_IPV4_NF_CONNTRACK_MAX=1,
423 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
424 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
425 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
426 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
427 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
428 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
429 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
430 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
431 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
432 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
433 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
434 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
435 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
436 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
437 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
438 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
439 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
440 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
441 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
442 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
443 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
444 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
445 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
446 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
447 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
448 NET_IPV4_NF_CONNTRACK_COUNT=27,
451 /* /proc/sys/net/ipv6 */
457 NET_IPV6_BINDV6ONLY=20,
458 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
459 NET_IPV6_IP6FRAG_LOW_THRESH=22,
460 NET_IPV6_IP6FRAG_TIME=23,
461 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
462 NET_IPV6_MLD_MAX_MSF=25,
466 NET_IPV6_ROUTE_FLUSH=1,
467 NET_IPV6_ROUTE_GC_THRESH=2,
468 NET_IPV6_ROUTE_MAX_SIZE=3,
469 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
470 NET_IPV6_ROUTE_GC_TIMEOUT=5,
471 NET_IPV6_ROUTE_GC_INTERVAL=6,
472 NET_IPV6_ROUTE_GC_ELASTICITY=7,
473 NET_IPV6_ROUTE_MTU_EXPIRES=8,
474 NET_IPV6_ROUTE_MIN_ADVMSS=9,
475 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
479 NET_IPV6_FORWARDING=1,
480 NET_IPV6_HOP_LIMIT=2,
482 NET_IPV6_ACCEPT_RA=4,
483 NET_IPV6_ACCEPT_REDIRECTS=5,
485 NET_IPV6_DAD_TRANSMITS=7,
486 NET_IPV6_RTR_SOLICITS=8,
487 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
488 NET_IPV6_RTR_SOLICIT_DELAY=10,
489 NET_IPV6_USE_TEMPADDR=11,
490 NET_IPV6_TEMP_VALID_LFT=12,
491 NET_IPV6_TEMP_PREFERED_LFT=13,
492 NET_IPV6_REGEN_MAX_RETRY=14,
493 NET_IPV6_MAX_DESYNC_FACTOR=15,
494 NET_IPV6_MAX_ADDRESSES=16,
495 NET_IPV6_FORCE_MLD_VERSION=17,
499 /* /proc/sys/net/ipv6/icmp */
501 NET_IPV6_ICMP_RATELIMIT=1
504 /* /proc/sys/net/<protocol>/neigh/<dev> */
506 NET_NEIGH_MCAST_SOLICIT=1,
507 NET_NEIGH_UCAST_SOLICIT=2,
508 NET_NEIGH_APP_SOLICIT=3,
509 NET_NEIGH_RETRANS_TIME=4,
510 NET_NEIGH_REACHABLE_TIME=5,
511 NET_NEIGH_DELAY_PROBE_TIME=6,
512 NET_NEIGH_GC_STALE_TIME=7,
513 NET_NEIGH_UNRES_QLEN=8,
514 NET_NEIGH_PROXY_QLEN=9,
515 NET_NEIGH_ANYCAST_DELAY=10,
516 NET_NEIGH_PROXY_DELAY=11,
517 NET_NEIGH_LOCKTIME=12,
518 NET_NEIGH_GC_INTERVAL=13,
519 NET_NEIGH_GC_THRESH1=14,
520 NET_NEIGH_GC_THRESH2=15,
521 NET_NEIGH_GC_THRESH3=16,
522 NET_NEIGH_RETRANS_TIME_MS=17,
523 NET_NEIGH_REACHABLE_TIME_MS=18,
527 /* /proc/sys/net/ipx */
529 NET_IPX_PPROP_BROADCASTING=1,
534 /* /proc/sys/net/appletalk */
536 NET_ATALK_AARP_EXPIRY_TIME=1,
537 NET_ATALK_AARP_TICK_TIME=2,
538 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
539 NET_ATALK_AARP_RESOLVE_TIME=4
543 /* /proc/sys/net/netrom */
545 NET_NETROM_DEFAULT_PATH_QUALITY=1,
546 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
547 NET_NETROM_NETWORK_TTL_INITIALISER=3,
548 NET_NETROM_TRANSPORT_TIMEOUT=4,
549 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
550 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
551 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
552 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
553 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
554 NET_NETROM_ROUTING_CONTROL=10,
555 NET_NETROM_LINK_FAILS_COUNT=11
558 /* /proc/sys/net/ax25 */
560 NET_AX25_IP_DEFAULT_MODE=1,
561 NET_AX25_DEFAULT_MODE=2,
562 NET_AX25_BACKOFF_TYPE=3,
563 NET_AX25_CONNECT_MODE=4,
564 NET_AX25_STANDARD_WINDOW=5,
565 NET_AX25_EXTENDED_WINDOW=6,
566 NET_AX25_T1_TIMEOUT=7,
567 NET_AX25_T2_TIMEOUT=8,
568 NET_AX25_T3_TIMEOUT=9,
569 NET_AX25_IDLE_TIMEOUT=10,
572 NET_AX25_PROTOCOL=13,
573 NET_AX25_DAMA_SLAVE_TIMEOUT=14
576 /* /proc/sys/net/rose */
578 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
579 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
580 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
581 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
582 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
583 NET_ROSE_ROUTING_CONTROL=6,
584 NET_ROSE_LINK_FAIL_TIMEOUT=7,
586 NET_ROSE_WINDOW_SIZE=9,
587 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
590 /* /proc/sys/net/x25 */
592 NET_X25_RESTART_REQUEST_TIMEOUT=1,
593 NET_X25_CALL_REQUEST_TIMEOUT=2,
594 NET_X25_RESET_REQUEST_TIMEOUT=3,
595 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
596 NET_X25_ACK_HOLD_BACK_TIMEOUT=5
599 /* /proc/sys/net/token-ring */
605 /* /proc/sys/net/decnet/ */
607 NET_DECNET_NODE_TYPE = 1,
608 NET_DECNET_NODE_ADDRESS = 2,
609 NET_DECNET_NODE_NAME = 3,
610 NET_DECNET_DEFAULT_DEVICE = 4,
611 NET_DECNET_TIME_WAIT = 5,
612 NET_DECNET_DN_COUNT = 6,
613 NET_DECNET_DI_COUNT = 7,
614 NET_DECNET_DR_COUNT = 8,
615 NET_DECNET_DST_GC_INTERVAL = 9,
616 NET_DECNET_CONF = 10,
617 NET_DECNET_NO_FC_MAX_CWND = 11,
618 NET_DECNET_DEBUG_LEVEL = 255
621 /* /proc/sys/net/decnet/conf/<dev> */
623 NET_DECNET_CONF_LOOPBACK = -2,
624 NET_DECNET_CONF_DDCMP = -3,
625 NET_DECNET_CONF_PPP = -4,
626 NET_DECNET_CONF_X25 = -5,
627 NET_DECNET_CONF_GRE = -6,
628 NET_DECNET_CONF_ETHER = -7
630 /* ... and ifindex of devices */
633 /* /proc/sys/net/decnet/conf/<dev>/ */
635 NET_DECNET_CONF_DEV_PRIORITY = 1,
636 NET_DECNET_CONF_DEV_T1 = 2,
637 NET_DECNET_CONF_DEV_T2 = 3,
638 NET_DECNET_CONF_DEV_T3 = 4,
639 NET_DECNET_CONF_DEV_FORWARDING = 5,
640 NET_DECNET_CONF_DEV_BLKSIZE = 6,
641 NET_DECNET_CONF_DEV_STATE = 7
644 /* /proc/sys/net/sctp */
646 NET_SCTP_RTO_INITIAL = 1,
647 NET_SCTP_RTO_MIN = 2,
648 NET_SCTP_RTO_MAX = 3,
649 NET_SCTP_RTO_ALPHA = 4,
650 NET_SCTP_RTO_BETA = 5,
651 NET_SCTP_VALID_COOKIE_LIFE = 6,
652 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
653 NET_SCTP_PATH_MAX_RETRANS = 8,
654 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
655 NET_SCTP_HB_INTERVAL = 10,
656 NET_SCTP_PRESERVE_ENABLE = 11,
657 NET_SCTP_MAX_BURST = 12,
658 NET_SCTP_ADDIP_ENABLE = 13,
659 NET_SCTP_PRSCTP_ENABLE = 14,
660 NET_SCTP_SNDBUF_POLICY = 15,
663 /* /proc/sys/net/bridge */
665 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
666 NET_BRIDGE_NF_CALL_IPTABLES = 2,
667 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
668 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
671 /* /proc/sys/net/tux/ */
677 NET_TUX_CLIENTPORT = 5,
679 NET_TUX_SERVERPORT = 7,
681 NET_TUX_KEEPALIVE_TIMEOUT = 9,
682 NET_TUX_MAX_KEEPALIVE_BW = 10,
683 NET_TUX_DEFER_ACCEPT = 11,
684 NET_TUX_MAX_FREE_REQUESTS = 12,
685 NET_TUX_MAX_CONNECT = 13,
686 NET_TUX_MAX_BACKLOG = 14,
687 NET_TUX_MODE_FORBIDDEN = 15,
688 NET_TUX_MODE_ALLOWED = 16,
689 NET_TUX_MODE_USERSPACE = 17,
690 NET_TUX_MODE_CGI = 18,
691 NET_TUX_CGI_UID = 19,
692 NET_TUX_CGI_GID = 20,
693 NET_TUX_CGIROOT = 21,
694 NET_TUX_LOGENTRY_ALIGN_ORDER = 22,
695 NET_TUX_NONAGLE = 23,
696 NET_TUX_ACK_PINGPONG = 24,
697 NET_TUX_PUSH_ALL = 25,
698 NET_TUX_ZEROCOPY_PARSE = 26,
699 NET_CONFIG_TUX_DEBUG_BLOCKING = 27,
700 NET_TUX_PAGE_AGE_START = 28,
701 NET_TUX_PAGE_AGE_ADV = 29,
702 NET_TUX_PAGE_AGE_MAX = 30,
703 NET_TUX_VIRTUAL_SERVER = 31,
704 NET_TUX_MAX_OBJECT_SIZE = 32,
705 NET_TUX_COMPRESSION = 33,
707 NET_TUX_CGI_INHERIT_CPU = 35,
708 NET_TUX_CGI_CPU_MASK = 36,
709 NET_TUX_ZEROCOPY_HEADER = 37,
710 NET_TUX_ZEROCOPY_SENDFILE = 38,
711 NET_TUX_ALL_USERSPACE = 39,
712 NET_TUX_REDIRECT_LOGGING = 40,
713 NET_TUX_REFERER_LOGGING = 41,
714 NET_TUX_MAX_HEADER_LEN = 42,
715 NET_TUX_404_PAGE = 43,
716 NET_TUX_MAX_KEEPALIVES = 44,
717 NET_TUX_IGNORE_QUERY = 45,
720 /* CTL_PROC names: */
725 FS_NRINODE=1, /* int:current number of allocated inodes */
727 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
728 FS_NRDQUOT=4, /* int:current number of allocated dquots */
729 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
730 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
731 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
733 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
734 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
735 FS_OVERFLOWUID=11, /* int: overflow UID */
736 FS_OVERFLOWGID=12, /* int: overflow GID */
737 FS_LEASES=13, /* int: leases enabled */
738 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
739 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
740 FS_DQSTATS=16, /* disc quota usage statistics and control */
741 FS_XFS=17, /* struct: control xfs parameters */
742 FS_AIO_NR=18, /* current system-wide number of aio requests */
743 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
746 /* /proc/sys/fs/quota/ */
752 FS_DQ_CACHE_HITS = 5,
759 /* CTL_DEBUG names: */
771 /* /proc/sys/dev/cdrom */
774 DEV_CDROM_AUTOCLOSE=2,
775 DEV_CDROM_AUTOEJECT=3,
778 DEV_CDROM_CHECK_MEDIA=6
781 /* /proc/sys/dev/parport */
783 DEV_PARPORT_DEFAULT=-3
786 /* /proc/sys/dev/raid */
788 DEV_RAID_SPEED_LIMIT_MIN=1,
789 DEV_RAID_SPEED_LIMIT_MAX=2
792 /* /proc/sys/dev/parport/default */
794 DEV_PARPORT_DEFAULT_TIMESLICE=1,
795 DEV_PARPORT_DEFAULT_SPINTIME=2
798 /* /proc/sys/dev/parport/parport n */
800 DEV_PARPORT_SPINTIME=1,
801 DEV_PARPORT_BASE_ADDR=2,
805 DEV_PARPORT_DEVICES=6,
806 DEV_PARPORT_AUTOPROBE=16
809 /* /proc/sys/dev/parport/parport n/devices/ */
811 DEV_PARPORT_DEVICES_ACTIVE=-3,
814 /* /proc/sys/dev/parport/parport n/devices/device n */
816 DEV_PARPORT_DEVICE_TIMESLICE=1,
819 /* /proc/sys/dev/mac_hid */
821 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
822 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
823 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
824 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
825 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
826 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
829 /* /proc/sys/dev/scsi */
831 DEV_SCSI_LOGGING_LEVEL=1,
837 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
838 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
839 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
840 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
841 ABI_TRACE=5, /* tracing flags */
842 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
847 extern void sysctl_init(void);
849 typedef struct ctl_table ctl_table;
851 typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
852 void __user *oldval, size_t __user *oldlenp,
853 void __user *newval, size_t newlen,
856 typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
857 void __user *buffer, size_t *lenp, loff_t *ppos);
859 typedef int virt_handler (struct ctl_table *ctl, int write, xid_t xid,
860 void **datap, size_t *lenp);
862 extern int proc_dostring(ctl_table *, int, struct file *,
863 void __user *, size_t *, loff_t *);
864 extern int proc_dointvec(ctl_table *, int, struct file *,
865 void __user *, size_t *, loff_t *);
866 extern int proc_dointvec_bset(ctl_table *, int, struct file *,
867 void __user *, size_t *, loff_t *);
868 extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
869 void __user *, size_t *, loff_t *);
870 extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
871 void __user *, size_t *, loff_t *);
872 extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
873 void __user *, size_t *, loff_t *);
874 extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *,
875 void __user *, size_t *, loff_t *);
876 extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
877 void __user *, size_t *, loff_t *);
878 extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
879 struct file *, void __user *, size_t *, loff_t *);
881 extern int do_sysctl (int __user *name, int nlen,
882 void __user *oldval, size_t __user *oldlenp,
883 void __user *newval, size_t newlen);
885 extern int do_sysctl_strategy (ctl_table *table,
886 int __user *name, int nlen,
887 void __user *oldval, size_t __user *oldlenp,
888 void __user *newval, size_t newlen, void ** context);
890 extern ctl_handler sysctl_string;
891 extern ctl_handler sysctl_intvec;
892 extern ctl_handler sysctl_jiffies;
893 extern ctl_handler sysctl_ms_jiffies;
897 * Register a set of sysctl names by calling register_sysctl_table
898 * with an initialised array of ctl_table's. An entry with zero
899 * ctl_name terminates the table. table->de will be set up by the
900 * registration and need not be initialised in advance.
902 * sysctl names can be mirrored automatically under /proc/sys. The
903 * procname supplied controls /proc naming.
905 * The table's mode will be honoured both for sys_sysctl(2) and
908 * Leaf nodes in the sysctl tree will be represented by a single file
909 * under /proc; non-leaf nodes will be represented by directories. A
910 * null procname disables /proc mirroring at this node.
912 * sysctl(2) can automatically manage read and write requests through
913 * the sysctl table. The data and maxlen fields of the ctl_table
914 * struct enable minimal validation of the values being written to be
915 * performed, and the mode field allows minimal authentication.
917 * More sophisticated management can be enabled by the provision of a
918 * strategy routine with the table entry. This will be called before
919 * any automatic read or write of the data is performed.
921 * The strategy routine may return:
922 * <0: Error occurred (error is passed to user process)
923 * 0: OK - proceed with automatic read or write.
924 * >0: OK - read or write has been done by the strategy routine, so
925 * return immediately.
927 * There must be a proc_handler routine for any terminal nodes
928 * mirrored under /proc/sys (non-terminals are handled by a built-in
929 * directory handler). Several default handlers are available to
930 * cover common cases.
933 /* A sysctl table is an array of struct ctl_table: */
936 int ctl_name; /* Binary ID */
937 const char *procname; /* Text ID for /proc/sys, or zero */
942 proc_handler *proc_handler; /* Callback for text formatting */
943 virt_handler *virt_handler; /* Context virtualization */
944 ctl_handler *strategy; /* Callback function for all r/w */
945 struct proc_dir_entry *de; /* /proc control block */
950 /* struct ctl_table_header is used to maintain dynamic lists of
952 struct ctl_table_header
954 ctl_table *ctl_table;
955 struct list_head ctl_entry;
958 struct ctl_table_header * register_sysctl_table(ctl_table * table,
960 void unregister_sysctl_table(struct ctl_table_header * table);
962 #else /* __KERNEL__ */
964 #endif /* __KERNEL__ */
966 #endif /* _LINUX_SYSCTL_H */