Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * sysctl.h: General linux system control interface
3 *
4 * Begun 24 March 1995, Stephen Tweedie
5 *
6 ****************************************************************
7 ****************************************************************
8 **
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.
13 **
14 ****************************************************************
15 ****************************************************************
16 */
17
18#ifndef _LINUX_SYSCTL_H
19#define _LINUX_SYSCTL_H
20
21#include <linux/kernel.h>
22#include <linux/types.h>
23#include <linux/list.h>
24#include <linux/compiler.h>
25
26struct file;
27
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? */
32
33struct __sysctl_args {
34 int __user *name;
35 int nlen;
36 void __user *oldval;
37 size_t __user *oldlenp;
38 void __user *newval;
39 size_t newlen;
40 unsigned long __unused[4];
41};
42
43/* Define sysctl names first */
44
45/* Top-level names: */
46
47/* For internal pattern-matching use only: */
48#ifdef __KERNEL__
49#define CTL_ANY -1 /* Matches any name */
50#define CTL_NONE 0
51#endif
52
53enum
54{
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) */
65};
66
67/* CTL_BUS names: */
68enum
69{
70 CTL_BUS_ISA=1 /* ISA */
71};
72
73/* /proc/sys/fs/inotify/ */
74enum
75{
76 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */
77 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */
78 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */
79};
80
81/* CTL_KERN names: */
82enum
83{
84 KERN_OSTYPE=1, /* string: system version */
85 KERN_OSRELEASE=2, /* string: system release */
86 KERN_OSREV=3, /* int: system revision */
87 KERN_VERSION=4, /* string: compile time info */
88 KERN_SECUREMASK=5, /* struct: maximum rights mask */
89 KERN_PROF=6, /* table: profiling information */
90 KERN_NODENAME=7,
91 KERN_DOMAINNAME=8,
92
93 KERN_CAP_BSET=14, /* int: capability bounding set */
94 KERN_PANIC=15, /* int: panic timeout */
95 KERN_REALROOTDEV=16, /* real root device to mount after initrd */
96
97 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
98 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
99 KERN_PRINTK=23, /* struct: control printk logging parameters */
100 KERN_NAMETRANS=24, /* Name translation */
101 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
102 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
103 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
104 KERN_MODPROBE=28,
105 KERN_SG_BIG_BUFF=29,
106 KERN_ACCT=30, /* BSD process accounting parameters */
107 KERN_PPC_L2CR=31, /* l2cr register on PPC */
108
109 KERN_RTSIGNR=32, /* Number of rt sigs queued */
110 KERN_RTSIGMAX=33, /* Max queuable */
111
112 KERN_SHMMAX=34, /* long: Maximum shared memory segment */
113 KERN_MSGMAX=35, /* int: Maximum size of a messege */
114 KERN_MSGMNB=36, /* int: Maximum message queue size */
115 KERN_MSGPOOL=37, /* int: Maximum system message pool size */
116 KERN_SYSRQ=38, /* int: Sysreq enable */
117 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
118 KERN_RANDOM=40, /* Random driver */
119 KERN_SHMALL=41, /* int: Maximum size of shared memory */
120 KERN_MSGMNI=42, /* int: msg queue identifiers */
121 KERN_SEM=43, /* struct: sysv semaphore limits */
122 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
123 KERN_SHMMNI=45, /* int: shm array identifiers */
124 KERN_OVERFLOWUID=46, /* int: overflow UID */
125 KERN_OVERFLOWGID=47, /* int: overflow GID */
126 KERN_SHMPATH=48, /* string: path to shm fs */
127 KERN_HOTPLUG=49, /* string: path to hotplug policy agent */
128 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
129 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
130 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
131 KERN_TAINTED=53, /* int: various kernel tainted flags */
132 KERN_CADPID=54, /* int: PID of the process to notify on CAD */
133 KERN_PIDMAX=55, /* int: PID # limit */
134 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
135 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
136 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
137 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
138 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
139 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
140 KERN_PTY=62, /* dir: pty driver */
141 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
142 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
143 KERN_HZ_TIMER=65, /* int: hz timer on or off */
144 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
145 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
146 KERN_RANDOMIZE=68, /* int: randomize virtual address space */
147 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
148 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
149};
150
151
152/* CTL_VM names: */
153enum
154{
155 VM_UNUSED1=1, /* was: struct: Set vm swapping control */
156 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
157 VM_UNUSED3=3, /* was: struct: Set free page thresholds */
158 VM_UNUSED4=4, /* Spare */
159 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
160 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
161 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
162 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
163 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
164 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
165 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
166 VM_DIRTY_RATIO=12, /* dirty_ratio */
167 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
168 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
169 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
170 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
171 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
172 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
173 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
174 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
175 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
176 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
177 VM_LAPTOP_MODE=23, /* vm laptop mode */
178 VM_BLOCK_DUMP=24, /* block dump mode */
179 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
180 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
181 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
182 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
183};
184
185
186/* CTL_NET names: */
187enum
188{
189 NET_CORE=1,
190 NET_ETHER=2,
191 NET_802=3,
192 NET_UNIX=4,
193 NET_IPV4=5,
194 NET_IPX=6,
195 NET_ATALK=7,
196 NET_NETROM=8,
197 NET_AX25=9,
198 NET_BRIDGE=10,
199 NET_ROSE=11,
200 NET_IPV6=12,
201 NET_X25=13,
202 NET_TR=14,
203 NET_DECNET=15,
204 NET_ECONET=16,
205 NET_SCTP=17,
206};
207
208/* /proc/sys/kernel/random */
209enum
210{
211 RANDOM_POOLSIZE=1,
212 RANDOM_ENTROPY_COUNT=2,
213 RANDOM_READ_THRESH=3,
214 RANDOM_WRITE_THRESH=4,
215 RANDOM_BOOT_ID=5,
216 RANDOM_UUID=6
217};
218
219/* /proc/sys/kernel/pty */
220enum
221{
222 PTY_MAX=1,
223 PTY_NR=2
224};
225
226/* /proc/sys/bus/isa */
227enum
228{
229 BUS_ISA_MEM_BASE=1,
230 BUS_ISA_PORT_BASE=2,
231 BUS_ISA_PORT_SHIFT=3
232};
233
234/* /proc/sys/net/core */
235enum
236{
237 NET_CORE_WMEM_MAX=1,
238 NET_CORE_RMEM_MAX=2,
239 NET_CORE_WMEM_DEFAULT=3,
240 NET_CORE_RMEM_DEFAULT=4,
241/* was NET_CORE_DESTROY_DELAY */
242 NET_CORE_MAX_BACKLOG=6,
243 NET_CORE_FASTROUTE=7,
244 NET_CORE_MSG_COST=8,
245 NET_CORE_MSG_BURST=9,
246 NET_CORE_OPTMEM_MAX=10,
247 NET_CORE_HOT_LIST_LENGTH=11,
248 NET_CORE_DIVERT_VERSION=12,
249 NET_CORE_NO_CONG_THRESH=13,
250 NET_CORE_NO_CONG=14,
251 NET_CORE_LO_CONG=15,
252 NET_CORE_MOD_CONG=16,
253 NET_CORE_DEV_WEIGHT=17,
254 NET_CORE_SOMAXCONN=18,
255 NET_CORE_BUDGET=19,
256};
257
258/* /proc/sys/net/ethernet */
259
260/* /proc/sys/net/802 */
261
262/* /proc/sys/net/unix */
263
264enum
265{
266 NET_UNIX_DESTROY_DELAY=1,
267 NET_UNIX_DELETE_DELAY=2,
268 NET_UNIX_MAX_DGRAM_QLEN=3,
269};
270
271/* /proc/sys/net/ipv4 */
272enum
273{
274 /* v2.0 compatibile variables */
275 NET_IPV4_FORWARD=8,
276 NET_IPV4_DYNADDR=9,
277
278 NET_IPV4_CONF=16,
279 NET_IPV4_NEIGH=17,
280 NET_IPV4_ROUTE=18,
281 NET_IPV4_FIB_HASH=19,
282 NET_IPV4_NETFILTER=20,
283
284 NET_IPV4_TCP_TIMESTAMPS=33,
285 NET_IPV4_TCP_WINDOW_SCALING=34,
286 NET_IPV4_TCP_SACK=35,
287 NET_IPV4_TCP_RETRANS_COLLAPSE=36,
288 NET_IPV4_DEFAULT_TTL=37,
289 NET_IPV4_AUTOCONFIG=38,
290 NET_IPV4_NO_PMTU_DISC=39,
291 NET_IPV4_TCP_SYN_RETRIES=40,
292 NET_IPV4_IPFRAG_HIGH_THRESH=41,
293 NET_IPV4_IPFRAG_LOW_THRESH=42,
294 NET_IPV4_IPFRAG_TIME=43,
295 NET_IPV4_TCP_MAX_KA_PROBES=44,
296 NET_IPV4_TCP_KEEPALIVE_TIME=45,
297 NET_IPV4_TCP_KEEPALIVE_PROBES=46,
298 NET_IPV4_TCP_RETRIES1=47,
299 NET_IPV4_TCP_RETRIES2=48,
300 NET_IPV4_TCP_FIN_TIMEOUT=49,
301 NET_IPV4_IP_MASQ_DEBUG=50,
302 NET_TCP_SYNCOOKIES=51,
303 NET_TCP_STDURG=52,
304 NET_TCP_RFC1337=53,
305 NET_TCP_SYN_TAILDROP=54,
306 NET_TCP_MAX_SYN_BACKLOG=55,
307 NET_IPV4_LOCAL_PORT_RANGE=56,
308 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
309 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
310 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
311 NET_IPV4_ICMP_DESTUNREACH_RATE=60,
312 NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
313 NET_IPV4_ICMP_PARAMPROB_RATE=62,
314 NET_IPV4_ICMP_ECHOREPLY_RATE=63,
315 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
316 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
317 NET_TCP_TW_RECYCLE=66,
318 NET_IPV4_ALWAYS_DEFRAG=67,
319 NET_IPV4_TCP_KEEPALIVE_INTVL=68,
320 NET_IPV4_INET_PEER_THRESHOLD=69,
321 NET_IPV4_INET_PEER_MINTTL=70,
322 NET_IPV4_INET_PEER_MAXTTL=71,
323 NET_IPV4_INET_PEER_GC_MINTIME=72,
324 NET_IPV4_INET_PEER_GC_MAXTIME=73,
325 NET_TCP_ORPHAN_RETRIES=74,
326 NET_TCP_ABORT_ON_OVERFLOW=75,
327 NET_TCP_SYNACK_RETRIES=76,
328 NET_TCP_MAX_ORPHANS=77,
329 NET_TCP_MAX_TW_BUCKETS=78,
330 NET_TCP_FACK=79,
331 NET_TCP_REORDERING=80,
332 NET_TCP_ECN=81,
333 NET_TCP_DSACK=82,
334 NET_TCP_MEM=83,
335 NET_TCP_WMEM=84,
336 NET_TCP_RMEM=85,
337 NET_TCP_APP_WIN=86,
338 NET_TCP_ADV_WIN_SCALE=87,
339 NET_IPV4_NONLOCAL_BIND=88,
340 NET_IPV4_ICMP_RATELIMIT=89,
341 NET_IPV4_ICMP_RATEMASK=90,
342 NET_TCP_TW_REUSE=91,
343 NET_TCP_FRTO=92,
344 NET_TCP_LOW_LATENCY=93,
345 NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
346 NET_IPV4_IGMP_MAX_MSF=96,
347 NET_TCP_NO_METRICS_SAVE=97,
348 NET_TCP_DEFAULT_WIN_SCALE=105,
349 NET_TCP_MODERATE_RCVBUF=106,
350 NET_TCP_TSO_WIN_DIVISOR=107,
351 NET_TCP_BIC_BETA=108,
352 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
353 NET_TCP_CONG_CONTROL=110,
354};
355
356enum {
357 NET_IPV4_ROUTE_FLUSH=1,
358 NET_IPV4_ROUTE_MIN_DELAY=2,
359 NET_IPV4_ROUTE_MAX_DELAY=3,
360 NET_IPV4_ROUTE_GC_THRESH=4,
361 NET_IPV4_ROUTE_MAX_SIZE=5,
362 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
363 NET_IPV4_ROUTE_GC_TIMEOUT=7,
364 NET_IPV4_ROUTE_GC_INTERVAL=8,
365 NET_IPV4_ROUTE_REDIRECT_LOAD=9,
366 NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
367 NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
368 NET_IPV4_ROUTE_ERROR_COST=12,
369 NET_IPV4_ROUTE_ERROR_BURST=13,
370 NET_IPV4_ROUTE_GC_ELASTICITY=14,
371 NET_IPV4_ROUTE_MTU_EXPIRES=15,
372 NET_IPV4_ROUTE_MIN_PMTU=16,
373 NET_IPV4_ROUTE_MIN_ADVMSS=17,
374 NET_IPV4_ROUTE_SECRET_INTERVAL=18,
375 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
376};
377
378enum
379{
380 NET_PROTO_CONF_ALL=-2,
381 NET_PROTO_CONF_DEFAULT=-3
382
383 /* And device ifindices ... */
384};
385
386enum
387{
388 NET_IPV4_CONF_FORWARDING=1,
389 NET_IPV4_CONF_MC_FORWARDING=2,
390 NET_IPV4_CONF_PROXY_ARP=3,
391 NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
392 NET_IPV4_CONF_SECURE_REDIRECTS=5,
393 NET_IPV4_CONF_SEND_REDIRECTS=6,
394 NET_IPV4_CONF_SHARED_MEDIA=7,
395 NET_IPV4_CONF_RP_FILTER=8,
396 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
397 NET_IPV4_CONF_BOOTP_RELAY=10,
398 NET_IPV4_CONF_LOG_MARTIANS=11,
399 NET_IPV4_CONF_TAG=12,
400 NET_IPV4_CONF_ARPFILTER=13,
401 NET_IPV4_CONF_MEDIUM_ID=14,
402 NET_IPV4_CONF_NOXFRM=15,
403 NET_IPV4_CONF_NOPOLICY=16,
404 NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
405 NET_IPV4_CONF_ARP_ANNOUNCE=18,
406 NET_IPV4_CONF_ARP_IGNORE=19,
407 NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
408 __NET_IPV4_CONF_MAX
409};
410
411/* /proc/sys/net/ipv4/netfilter */
412enum
413{
414 NET_IPV4_NF_CONNTRACK_MAX=1,
415 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
416 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
417 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
418 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
419 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
420 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
421 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
422 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
423 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
424 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
425 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
426 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
427 NET_IPV4_NF_CONNTRACK_BUCKETS=14,
428 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
429 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
430 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
431 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
432 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
433 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
434 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
435 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
436 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
437 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
438 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
439 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
440 NET_IPV4_NF_CONNTRACK_COUNT=27,
441};
442
443/* /proc/sys/net/ipv6 */
444enum {
445 NET_IPV6_CONF=16,
446 NET_IPV6_NEIGH=17,
447 NET_IPV6_ROUTE=18,
448 NET_IPV6_ICMP=19,
449 NET_IPV6_BINDV6ONLY=20,
450 NET_IPV6_IP6FRAG_HIGH_THRESH=21,
451 NET_IPV6_IP6FRAG_LOW_THRESH=22,
452 NET_IPV6_IP6FRAG_TIME=23,
453 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
454 NET_IPV6_MLD_MAX_MSF=25,
455};
456
457enum {
458 NET_IPV6_ROUTE_FLUSH=1,
459 NET_IPV6_ROUTE_GC_THRESH=2,
460 NET_IPV6_ROUTE_MAX_SIZE=3,
461 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
462 NET_IPV6_ROUTE_GC_TIMEOUT=5,
463 NET_IPV6_ROUTE_GC_INTERVAL=6,
464 NET_IPV6_ROUTE_GC_ELASTICITY=7,
465 NET_IPV6_ROUTE_MTU_EXPIRES=8,
466 NET_IPV6_ROUTE_MIN_ADVMSS=9,
467 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
468};
469
470enum {
471 NET_IPV6_FORWARDING=1,
472 NET_IPV6_HOP_LIMIT=2,
473 NET_IPV6_MTU=3,
474 NET_IPV6_ACCEPT_RA=4,
475 NET_IPV6_ACCEPT_REDIRECTS=5,
476 NET_IPV6_AUTOCONF=6,
477 NET_IPV6_DAD_TRANSMITS=7,
478 NET_IPV6_RTR_SOLICITS=8,
479 NET_IPV6_RTR_SOLICIT_INTERVAL=9,
480 NET_IPV6_RTR_SOLICIT_DELAY=10,
481 NET_IPV6_USE_TEMPADDR=11,
482 NET_IPV6_TEMP_VALID_LFT=12,
483 NET_IPV6_TEMP_PREFERED_LFT=13,
484 NET_IPV6_REGEN_MAX_RETRY=14,
485 NET_IPV6_MAX_DESYNC_FACTOR=15,
486 NET_IPV6_MAX_ADDRESSES=16,
487 NET_IPV6_FORCE_MLD_VERSION=17,
488 __NET_IPV6_MAX
489};
490
491/* /proc/sys/net/ipv6/icmp */
492enum {
493 NET_IPV6_ICMP_RATELIMIT=1
494};
495
496/* /proc/sys/net/<protocol>/neigh/<dev> */
497enum {
498 NET_NEIGH_MCAST_SOLICIT=1,
499 NET_NEIGH_UCAST_SOLICIT=2,
500 NET_NEIGH_APP_SOLICIT=3,
501 NET_NEIGH_RETRANS_TIME=4,
502 NET_NEIGH_REACHABLE_TIME=5,
503 NET_NEIGH_DELAY_PROBE_TIME=6,
504 NET_NEIGH_GC_STALE_TIME=7,
505 NET_NEIGH_UNRES_QLEN=8,
506 NET_NEIGH_PROXY_QLEN=9,
507 NET_NEIGH_ANYCAST_DELAY=10,
508 NET_NEIGH_PROXY_DELAY=11,
509 NET_NEIGH_LOCKTIME=12,
510 NET_NEIGH_GC_INTERVAL=13,
511 NET_NEIGH_GC_THRESH1=14,
512 NET_NEIGH_GC_THRESH2=15,
513 NET_NEIGH_GC_THRESH3=16,
514 NET_NEIGH_RETRANS_TIME_MS=17,
515 NET_NEIGH_REACHABLE_TIME_MS=18,
516 __NET_NEIGH_MAX
517};
518
519/* /proc/sys/net/ipx */
520enum {
521 NET_IPX_PPROP_BROADCASTING=1,
522 NET_IPX_FORWARDING=2
523};
524
525
526/* /proc/sys/net/appletalk */
527enum {
528 NET_ATALK_AARP_EXPIRY_TIME=1,
529 NET_ATALK_AARP_TICK_TIME=2,
530 NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
531 NET_ATALK_AARP_RESOLVE_TIME=4
532};
533
534
535/* /proc/sys/net/netrom */
536enum {
537 NET_NETROM_DEFAULT_PATH_QUALITY=1,
538 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
539 NET_NETROM_NETWORK_TTL_INITIALISER=3,
540 NET_NETROM_TRANSPORT_TIMEOUT=4,
541 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
542 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
543 NET_NETROM_TRANSPORT_BUSY_DELAY=7,
544 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
545 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
546 NET_NETROM_ROUTING_CONTROL=10,
547 NET_NETROM_LINK_FAILS_COUNT=11
548};
549
550/* /proc/sys/net/ax25 */
551enum {
552 NET_AX25_IP_DEFAULT_MODE=1,
553 NET_AX25_DEFAULT_MODE=2,
554 NET_AX25_BACKOFF_TYPE=3,
555 NET_AX25_CONNECT_MODE=4,
556 NET_AX25_STANDARD_WINDOW=5,
557 NET_AX25_EXTENDED_WINDOW=6,
558 NET_AX25_T1_TIMEOUT=7,
559 NET_AX25_T2_TIMEOUT=8,
560 NET_AX25_T3_TIMEOUT=9,
561 NET_AX25_IDLE_TIMEOUT=10,
562 NET_AX25_N2=11,
563 NET_AX25_PACLEN=12,
564 NET_AX25_PROTOCOL=13,
565 NET_AX25_DAMA_SLAVE_TIMEOUT=14
566};
567
568/* /proc/sys/net/rose */
569enum {
570 NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
571 NET_ROSE_CALL_REQUEST_TIMEOUT=2,
572 NET_ROSE_RESET_REQUEST_TIMEOUT=3,
573 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
574 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
575 NET_ROSE_ROUTING_CONTROL=6,
576 NET_ROSE_LINK_FAIL_TIMEOUT=7,
577 NET_ROSE_MAX_VCS=8,
578 NET_ROSE_WINDOW_SIZE=9,
579 NET_ROSE_NO_ACTIVITY_TIMEOUT=10
580};
581
582/* /proc/sys/net/x25 */
583enum {
584 NET_X25_RESTART_REQUEST_TIMEOUT=1,
585 NET_X25_CALL_REQUEST_TIMEOUT=2,
586 NET_X25_RESET_REQUEST_TIMEOUT=3,
587 NET_X25_CLEAR_REQUEST_TIMEOUT=4,
588 NET_X25_ACK_HOLD_BACK_TIMEOUT=5
589};
590
591/* /proc/sys/net/token-ring */
592enum
593{
594 NET_TR_RIF_TIMEOUT=1
595};
596
597/* /proc/sys/net/decnet/ */
598enum {
599 NET_DECNET_NODE_TYPE = 1,
600 NET_DECNET_NODE_ADDRESS = 2,
601 NET_DECNET_NODE_NAME = 3,
602 NET_DECNET_DEFAULT_DEVICE = 4,
603 NET_DECNET_TIME_WAIT = 5,
604 NET_DECNET_DN_COUNT = 6,
605 NET_DECNET_DI_COUNT = 7,
606 NET_DECNET_DR_COUNT = 8,
607 NET_DECNET_DST_GC_INTERVAL = 9,
608 NET_DECNET_CONF = 10,
609 NET_DECNET_NO_FC_MAX_CWND = 11,
610 NET_DECNET_DEBUG_LEVEL = 255
611};
612
613/* /proc/sys/net/decnet/conf/<dev> */
614enum {
615 NET_DECNET_CONF_LOOPBACK = -2,
616 NET_DECNET_CONF_DDCMP = -3,
617 NET_DECNET_CONF_PPP = -4,
618 NET_DECNET_CONF_X25 = -5,
619 NET_DECNET_CONF_GRE = -6,
620 NET_DECNET_CONF_ETHER = -7
621
622 /* ... and ifindex of devices */
623};
624
625/* /proc/sys/net/decnet/conf/<dev>/ */
626enum {
627 NET_DECNET_CONF_DEV_PRIORITY = 1,
628 NET_DECNET_CONF_DEV_T1 = 2,
629 NET_DECNET_CONF_DEV_T2 = 3,
630 NET_DECNET_CONF_DEV_T3 = 4,
631 NET_DECNET_CONF_DEV_FORWARDING = 5,
632 NET_DECNET_CONF_DEV_BLKSIZE = 6,
633 NET_DECNET_CONF_DEV_STATE = 7
634};
635
636/* /proc/sys/net/sctp */
637enum {
638 NET_SCTP_RTO_INITIAL = 1,
639 NET_SCTP_RTO_MIN = 2,
640 NET_SCTP_RTO_MAX = 3,
641 NET_SCTP_RTO_ALPHA = 4,
642 NET_SCTP_RTO_BETA = 5,
643 NET_SCTP_VALID_COOKIE_LIFE = 6,
644 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
645 NET_SCTP_PATH_MAX_RETRANS = 8,
646 NET_SCTP_MAX_INIT_RETRANSMITS = 9,
647 NET_SCTP_HB_INTERVAL = 10,
648 NET_SCTP_PRESERVE_ENABLE = 11,
649 NET_SCTP_MAX_BURST = 12,
650 NET_SCTP_ADDIP_ENABLE = 13,
651 NET_SCTP_PRSCTP_ENABLE = 14,
652 NET_SCTP_SNDBUF_POLICY = 15,
653 NET_SCTP_SACK_TIMEOUT = 16,
654};
655
656/* /proc/sys/net/bridge */
657enum {
658 NET_BRIDGE_NF_CALL_ARPTABLES = 1,
659 NET_BRIDGE_NF_CALL_IPTABLES = 2,
660 NET_BRIDGE_NF_CALL_IP6TABLES = 3,
661 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
662};
663
664/* CTL_PROC names: */
665
666/* CTL_FS names: */
667enum
668{
669 FS_NRINODE=1, /* int:current number of allocated inodes */
670 FS_STATINODE=2,
671 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
672 FS_NRDQUOT=4, /* int:current number of allocated dquots */
673 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
674 FS_NRFILE=6, /* int:current number of allocated filedescriptors */
675 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
676 FS_DENTRY=8,
677 FS_NRSUPER=9, /* int:current number of allocated super_blocks */
678 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
679 FS_OVERFLOWUID=11, /* int: overflow UID */
680 FS_OVERFLOWGID=12, /* int: overflow GID */
681 FS_LEASES=13, /* int: leases enabled */
682 FS_DIR_NOTIFY=14, /* int: directory notification enabled */
683 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
684 FS_DQSTATS=16, /* disc quota usage statistics and control */
685 FS_XFS=17, /* struct: control xfs parameters */
686 FS_AIO_NR=18, /* current system-wide number of aio requests */
687 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
688 FS_INOTIFY=20, /* inotify submenu */
689};
690
691/* /proc/sys/fs/quota/ */
692enum {
693 FS_DQ_LOOKUPS = 1,
694 FS_DQ_DROPS = 2,
695 FS_DQ_READS = 3,
696 FS_DQ_WRITES = 4,
697 FS_DQ_CACHE_HITS = 5,
698 FS_DQ_ALLOCATED = 6,
699 FS_DQ_FREE = 7,
700 FS_DQ_SYNCS = 8,
701 FS_DQ_WARNINGS = 9,
702};
703
704/* CTL_DEBUG names: */
705
706/* CTL_DEV names: */
707enum {
708 DEV_CDROM=1,
709 DEV_HWMON=2,
710 DEV_PARPORT=3,
711 DEV_RAID=4,
712 DEV_MAC_HID=5,
713 DEV_SCSI=6,
714};
715
716/* /proc/sys/dev/cdrom */
717enum {
718 DEV_CDROM_INFO=1,
719 DEV_CDROM_AUTOCLOSE=2,
720 DEV_CDROM_AUTOEJECT=3,
721 DEV_CDROM_DEBUG=4,
722 DEV_CDROM_LOCK=5,
723 DEV_CDROM_CHECK_MEDIA=6
724};
725
726/* /proc/sys/dev/parport */
727enum {
728 DEV_PARPORT_DEFAULT=-3
729};
730
731/* /proc/sys/dev/raid */
732enum {
733 DEV_RAID_SPEED_LIMIT_MIN=1,
734 DEV_RAID_SPEED_LIMIT_MAX=2
735};
736
737/* /proc/sys/dev/parport/default */
738enum {
739 DEV_PARPORT_DEFAULT_TIMESLICE=1,
740 DEV_PARPORT_DEFAULT_SPINTIME=2
741};
742
743/* /proc/sys/dev/parport/parport n */
744enum {
745 DEV_PARPORT_SPINTIME=1,
746 DEV_PARPORT_BASE_ADDR=2,
747 DEV_PARPORT_IRQ=3,
748 DEV_PARPORT_DMA=4,
749 DEV_PARPORT_MODES=5,
750 DEV_PARPORT_DEVICES=6,
751 DEV_PARPORT_AUTOPROBE=16
752};
753
754/* /proc/sys/dev/parport/parport n/devices/ */
755enum {
756 DEV_PARPORT_DEVICES_ACTIVE=-3,
757};
758
759/* /proc/sys/dev/parport/parport n/devices/device n */
760enum {
761 DEV_PARPORT_DEVICE_TIMESLICE=1,
762};
763
764/* /proc/sys/dev/mac_hid */
765enum {
766 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
767 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
768 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
769 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
770 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
771 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
772};
773
774/* /proc/sys/dev/scsi */
775enum {
776 DEV_SCSI_LOGGING_LEVEL=1,
777};
778
779/* /proc/sys/abi */
780enum
781{
782 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
783 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
784 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
785 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
786 ABI_TRACE=5, /* tracing flags */
787 ABI_FAKE_UTSNAME=6, /* fake target utsname information */
788};
789
790#ifdef __KERNEL__
791
792extern void sysctl_init(void);
793
794typedef struct ctl_table ctl_table;
795
796typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
797 void __user *oldval, size_t __user *oldlenp,
798 void __user *newval, size_t newlen,
799 void **context);
800
801typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
802 void __user *buffer, size_t *lenp, loff_t *ppos);
803
804extern int proc_dostring(ctl_table *, int, struct file *,
805 void __user *, size_t *, loff_t *);
806extern int proc_dointvec(ctl_table *, int, struct file *,
807 void __user *, size_t *, loff_t *);
808extern int proc_dointvec_bset(ctl_table *, int, struct file *,
809 void __user *, size_t *, loff_t *);
810extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
811 void __user *, size_t *, loff_t *);
812extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
813 void __user *, size_t *, loff_t *);
814extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
815 void __user *, size_t *, loff_t *);
816extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *,
817 void __user *, size_t *, loff_t *);
818extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
819 void __user *, size_t *, loff_t *);
820extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
821 struct file *, void __user *, size_t *, loff_t *);
822
823extern int do_sysctl (int __user *name, int nlen,
824 void __user *oldval, size_t __user *oldlenp,
825 void __user *newval, size_t newlen);
826
827extern int do_sysctl_strategy (ctl_table *table,
828 int __user *name, int nlen,
829 void __user *oldval, size_t __user *oldlenp,
830 void __user *newval, size_t newlen, void ** context);
831
832extern ctl_handler sysctl_string;
833extern ctl_handler sysctl_intvec;
834extern ctl_handler sysctl_jiffies;
835extern ctl_handler sysctl_ms_jiffies;
836
837
838/*
839 * Register a set of sysctl names by calling register_sysctl_table
840 * with an initialised array of ctl_table's. An entry with zero
841 * ctl_name terminates the table. table->de will be set up by the
842 * registration and need not be initialised in advance.
843 *
844 * sysctl names can be mirrored automatically under /proc/sys. The
845 * procname supplied controls /proc naming.
846 *
847 * The table's mode will be honoured both for sys_sysctl(2) and
848 * proc-fs access.
849 *
850 * Leaf nodes in the sysctl tree will be represented by a single file
851 * under /proc; non-leaf nodes will be represented by directories. A
852 * null procname disables /proc mirroring at this node.
853 *
854 * sysctl(2) can automatically manage read and write requests through
855 * the sysctl table. The data and maxlen fields of the ctl_table
856 * struct enable minimal validation of the values being written to be
857 * performed, and the mode field allows minimal authentication.
858 *
859 * More sophisticated management can be enabled by the provision of a
860 * strategy routine with the table entry. This will be called before
861 * any automatic read or write of the data is performed.
862 *
863 * The strategy routine may return:
864 * <0: Error occurred (error is passed to user process)
865 * 0: OK - proceed with automatic read or write.
866 * >0: OK - read or write has been done by the strategy routine, so
867 * return immediately.
868 *
869 * There must be a proc_handler routine for any terminal nodes
870 * mirrored under /proc/sys (non-terminals are handled by a built-in
871 * directory handler). Several default handlers are available to
872 * cover common cases.
873 */
874
875/* A sysctl table is an array of struct ctl_table: */
876struct ctl_table
877{
878 int ctl_name; /* Binary ID */
879 const char *procname; /* Text ID for /proc/sys, or zero */
880 void *data;
881 int maxlen;
882 mode_t mode;
883 ctl_table *child;
884 proc_handler *proc_handler; /* Callback for text formatting */
885 ctl_handler *strategy; /* Callback function for all r/w */
886 struct proc_dir_entry *de; /* /proc control block */
887 void *extra1;
888 void *extra2;
889};
890
891/* struct ctl_table_header is used to maintain dynamic lists of
892 ctl_table trees. */
893struct ctl_table_header
894{
895 ctl_table *ctl_table;
896 struct list_head ctl_entry;
897};
898
899struct ctl_table_header * register_sysctl_table(ctl_table * table,
900 int insert_at_head);
901void unregister_sysctl_table(struct ctl_table_header * table);
902
903#else /* __KERNEL__ */
904
905#endif /* __KERNEL__ */
906
907#endif /* _LINUX_SYSCTL_H */