sysctl.h 30 KB

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  1. /*
  2. * sysctl.h: General linux system control interface
  3. *
  4. * Begun 24 March 1995, Stephen Tweedie
  5. *
  6. ****************************************************************
  7. ****************************************************************
  8. **
  9. ** WARNING:
  10. ** The values in this file are exported to user space via
  11. ** the sysctl() binary interface. Do *NOT* change the
  12. ** numbering of any existing values here, and do not change
  13. ** any numbers within any one set of values. If you have to
  14. ** redefine an existing interface, use a new number for it.
  15. ** The kernel will then return -ENOTDIR to any application using
  16. ** the old binary interface.
  17. **
  18. ** For new interfaces unless you really need a binary number
  19. ** please use CTL_UNNUMBERED.
  20. **
  21. ****************************************************************
  22. ****************************************************************
  23. */
  24. #ifndef _LINUX_SYSCTL_H
  25. #define _LINUX_SYSCTL_H
  26. #include <linux/kernel.h>
  27. #include <linux/types.h>
  28. #include <linux/compiler.h>
  29. struct file;
  30. struct completion;
  31. #define CTL_MAXNAME 10 /* how many path components do we allow in a
  32. call to sysctl? In other words, what is
  33. the largest acceptable value for the nlen
  34. member of a struct __sysctl_args to have? */
  35. struct __sysctl_args {
  36. int __user *name;
  37. int nlen;
  38. void __user *oldval;
  39. size_t __user *oldlenp;
  40. void __user *newval;
  41. size_t newlen;
  42. unsigned long __unused[4];
  43. };
  44. /* Define sysctl names first */
  45. /* Top-level names: */
  46. /* For internal pattern-matching use only: */
  47. #ifdef __KERNEL__
  48. #define CTL_NONE 0
  49. #define CTL_UNNUMBERED CTL_NONE /* sysctl without a binary number */
  50. #endif
  51. enum
  52. {
  53. CTL_KERN=1, /* General kernel info and control */
  54. CTL_VM=2, /* VM management */
  55. CTL_NET=3, /* Networking */
  56. /* was CTL_PROC */
  57. CTL_FS=5, /* Filesystems */
  58. CTL_DEBUG=6, /* Debugging */
  59. CTL_DEV=7, /* Devices */
  60. CTL_BUS=8, /* Busses */
  61. CTL_ABI=9, /* Binary emulation */
  62. CTL_CPU=10, /* CPU stuff (speed scaling, etc) */
  63. CTL_ARLAN=254, /* arlan wireless driver */
  64. CTL_APPLDATA=2120, /* s390 appldata */
  65. CTL_S390DBF=5677, /* s390 debug */
  66. CTL_SUNRPC=7249, /* sunrpc debug */
  67. CTL_PM=9899, /* frv power management */
  68. CTL_FRV=9898, /* frv specific sysctls */
  69. };
  70. /* CTL_BUS names: */
  71. enum
  72. {
  73. CTL_BUS_ISA=1 /* ISA */
  74. };
  75. /* /proc/sys/fs/inotify/ */
  76. enum
  77. {
  78. INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */
  79. INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */
  80. INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */
  81. };
  82. /* CTL_KERN names: */
  83. enum
  84. {
  85. KERN_OSTYPE=1, /* string: system version */
  86. KERN_OSRELEASE=2, /* string: system release */
  87. KERN_OSREV=3, /* int: system revision */
  88. KERN_VERSION=4, /* string: compile time info */
  89. KERN_SECUREMASK=5, /* struct: maximum rights mask */
  90. KERN_PROF=6, /* table: profiling information */
  91. KERN_NODENAME=7,
  92. KERN_DOMAINNAME=8,
  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. KERN_SPARC_REBOOT=21, /* reboot command on Sparc */
  97. KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */
  98. KERN_PRINTK=23, /* struct: control printk logging parameters */
  99. KERN_NAMETRANS=24, /* Name translation */
  100. KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */
  101. KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */
  102. KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */
  103. KERN_MODPROBE=28,
  104. KERN_SG_BIG_BUFF=29,
  105. KERN_ACCT=30, /* BSD process accounting parameters */
  106. KERN_PPC_L2CR=31, /* l2cr register on PPC */
  107. KERN_RTSIGNR=32, /* Number of rt sigs queued */
  108. KERN_RTSIGMAX=33, /* Max queuable */
  109. KERN_SHMMAX=34, /* long: Maximum shared memory segment */
  110. KERN_MSGMAX=35, /* int: Maximum size of a messege */
  111. KERN_MSGMNB=36, /* int: Maximum message queue size */
  112. KERN_MSGPOOL=37, /* int: Maximum system message pool size */
  113. KERN_SYSRQ=38, /* int: Sysreq enable */
  114. KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */
  115. KERN_RANDOM=40, /* Random driver */
  116. KERN_SHMALL=41, /* int: Maximum size of shared memory */
  117. KERN_MSGMNI=42, /* int: msg queue identifiers */
  118. KERN_SEM=43, /* struct: sysv semaphore limits */
  119. KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */
  120. KERN_SHMMNI=45, /* int: shm array identifiers */
  121. KERN_OVERFLOWUID=46, /* int: overflow UID */
  122. KERN_OVERFLOWGID=47, /* int: overflow GID */
  123. KERN_SHMPATH=48, /* string: path to shm fs */
  124. KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */
  125. KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */
  126. KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */
  127. KERN_CORE_USES_PID=52, /* int: use core or core.%pid */
  128. KERN_TAINTED=53, /* int: various kernel tainted flags */
  129. KERN_CADPID=54, /* int: PID of the process to notify on CAD */
  130. KERN_PIDMAX=55, /* int: PID # limit */
  131. KERN_CORE_PATTERN=56, /* string: pattern for core-file names */
  132. KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */
  133. KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */
  134. KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */
  135. KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */
  136. KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */
  137. KERN_PTY=62, /* dir: pty driver */
  138. KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */
  139. KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */
  140. KERN_HZ_TIMER=65, /* int: hz timer on or off */
  141. KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */
  142. KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */
  143. KERN_RANDOMIZE=68, /* int: randomize virtual address space */
  144. KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
  145. KERN_SPIN_RETRY=70, /* int: number of spinlock retries */
  146. KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
  147. KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */
  148. KERN_COMPAT_LOG=73, /* int: print compat layer messages */
  149. KERN_MAX_LOCK_DEPTH=74,
  150. KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */
  151. KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
  152. };
  153. /* CTL_VM names: */
  154. enum
  155. {
  156. VM_UNUSED1=1, /* was: struct: Set vm swapping control */
  157. VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */
  158. VM_UNUSED3=3, /* was: struct: Set free page thresholds */
  159. VM_UNUSED4=4, /* Spare */
  160. VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */
  161. VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */
  162. VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */
  163. VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */
  164. VM_UNUSED9=9, /* was: struct: Set page table cache parameters */
  165. VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */
  166. VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */
  167. VM_DIRTY_RATIO=12, /* dirty_ratio */
  168. VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */
  169. VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */
  170. VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */
  171. VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */
  172. VM_PAGEBUF=17, /* struct: Control pagebuf parameters */
  173. VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */
  174. VM_SWAPPINESS=19, /* Tendency to steal mapped memory */
  175. VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */
  176. VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */
  177. VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */
  178. VM_LAPTOP_MODE=23, /* vm laptop mode */
  179. VM_BLOCK_DUMP=24, /* block dump mode */
  180. VM_HUGETLB_GROUP=25, /* permitted hugetlb group */
  181. VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */
  182. VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */
  183. VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */
  184. VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */
  185. VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */
  186. VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */
  187. VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */
  188. VM_PANIC_ON_OOM=33, /* panic at out-of-memory */
  189. VM_VDSO_ENABLED=34, /* map VDSO into new processes? */
  190. VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */
  191. /* s390 vm cmm sysctls */
  192. VM_CMM_PAGES=1111,
  193. VM_CMM_TIMED_PAGES=1112,
  194. VM_CMM_TIMEOUT=1113,
  195. };
  196. /* CTL_NET names: */
  197. enum
  198. {
  199. NET_CORE=1,
  200. NET_ETHER=2,
  201. NET_802=3,
  202. NET_UNIX=4,
  203. NET_IPV4=5,
  204. NET_IPX=6,
  205. NET_ATALK=7,
  206. NET_NETROM=8,
  207. NET_AX25=9,
  208. NET_BRIDGE=10,
  209. NET_ROSE=11,
  210. NET_IPV6=12,
  211. NET_X25=13,
  212. NET_TR=14,
  213. NET_DECNET=15,
  214. NET_ECONET=16,
  215. NET_SCTP=17,
  216. NET_LLC=18,
  217. NET_NETFILTER=19,
  218. NET_DCCP=20,
  219. };
  220. /* /proc/sys/kernel/random */
  221. enum
  222. {
  223. RANDOM_POOLSIZE=1,
  224. RANDOM_ENTROPY_COUNT=2,
  225. RANDOM_READ_THRESH=3,
  226. RANDOM_WRITE_THRESH=4,
  227. RANDOM_BOOT_ID=5,
  228. RANDOM_UUID=6
  229. };
  230. /* /proc/sys/kernel/pty */
  231. enum
  232. {
  233. PTY_MAX=1,
  234. PTY_NR=2
  235. };
  236. /* /proc/sys/bus/isa */
  237. enum
  238. {
  239. BUS_ISA_MEM_BASE=1,
  240. BUS_ISA_PORT_BASE=2,
  241. BUS_ISA_PORT_SHIFT=3
  242. };
  243. /* /proc/sys/net/core */
  244. enum
  245. {
  246. NET_CORE_WMEM_MAX=1,
  247. NET_CORE_RMEM_MAX=2,
  248. NET_CORE_WMEM_DEFAULT=3,
  249. NET_CORE_RMEM_DEFAULT=4,
  250. /* was NET_CORE_DESTROY_DELAY */
  251. NET_CORE_MAX_BACKLOG=6,
  252. NET_CORE_FASTROUTE=7,
  253. NET_CORE_MSG_COST=8,
  254. NET_CORE_MSG_BURST=9,
  255. NET_CORE_OPTMEM_MAX=10,
  256. NET_CORE_HOT_LIST_LENGTH=11,
  257. NET_CORE_DIVERT_VERSION=12,
  258. NET_CORE_NO_CONG_THRESH=13,
  259. NET_CORE_NO_CONG=14,
  260. NET_CORE_LO_CONG=15,
  261. NET_CORE_MOD_CONG=16,
  262. NET_CORE_DEV_WEIGHT=17,
  263. NET_CORE_SOMAXCONN=18,
  264. NET_CORE_BUDGET=19,
  265. NET_CORE_AEVENT_ETIME=20,
  266. NET_CORE_AEVENT_RSEQTH=21,
  267. };
  268. /* /proc/sys/net/ethernet */
  269. /* /proc/sys/net/802 */
  270. /* /proc/sys/net/unix */
  271. enum
  272. {
  273. NET_UNIX_DESTROY_DELAY=1,
  274. NET_UNIX_DELETE_DELAY=2,
  275. NET_UNIX_MAX_DGRAM_QLEN=3,
  276. };
  277. /* /proc/sys/net/netfilter */
  278. enum
  279. {
  280. NET_NF_CONNTRACK_MAX=1,
  281. NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
  282. NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
  283. NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
  284. NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
  285. NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
  286. NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
  287. NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
  288. NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
  289. NET_NF_CONNTRACK_UDP_TIMEOUT=10,
  290. NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
  291. NET_NF_CONNTRACK_ICMP_TIMEOUT=12,
  292. NET_NF_CONNTRACK_GENERIC_TIMEOUT=13,
  293. NET_NF_CONNTRACK_BUCKETS=14,
  294. NET_NF_CONNTRACK_LOG_INVALID=15,
  295. NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
  296. NET_NF_CONNTRACK_TCP_LOOSE=17,
  297. NET_NF_CONNTRACK_TCP_BE_LIBERAL=18,
  298. NET_NF_CONNTRACK_TCP_MAX_RETRANS=19,
  299. NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
  300. NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
  301. NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
  302. NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
  303. NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
  304. NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
  305. NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
  306. NET_NF_CONNTRACK_COUNT=27,
  307. NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28,
  308. NET_NF_CONNTRACK_FRAG6_TIMEOUT=29,
  309. NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30,
  310. NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31,
  311. NET_NF_CONNTRACK_CHECKSUM=32,
  312. };
  313. /* /proc/sys/net/ipv4 */
  314. enum
  315. {
  316. /* v2.0 compatibile variables */
  317. NET_IPV4_FORWARD=8,
  318. NET_IPV4_DYNADDR=9,
  319. NET_IPV4_CONF=16,
  320. NET_IPV4_NEIGH=17,
  321. NET_IPV4_ROUTE=18,
  322. NET_IPV4_FIB_HASH=19,
  323. NET_IPV4_NETFILTER=20,
  324. NET_IPV4_TCP_TIMESTAMPS=33,
  325. NET_IPV4_TCP_WINDOW_SCALING=34,
  326. NET_IPV4_TCP_SACK=35,
  327. NET_IPV4_TCP_RETRANS_COLLAPSE=36,
  328. NET_IPV4_DEFAULT_TTL=37,
  329. NET_IPV4_AUTOCONFIG=38,
  330. NET_IPV4_NO_PMTU_DISC=39,
  331. NET_IPV4_TCP_SYN_RETRIES=40,
  332. NET_IPV4_IPFRAG_HIGH_THRESH=41,
  333. NET_IPV4_IPFRAG_LOW_THRESH=42,
  334. NET_IPV4_IPFRAG_TIME=43,
  335. NET_IPV4_TCP_MAX_KA_PROBES=44,
  336. NET_IPV4_TCP_KEEPALIVE_TIME=45,
  337. NET_IPV4_TCP_KEEPALIVE_PROBES=46,
  338. NET_IPV4_TCP_RETRIES1=47,
  339. NET_IPV4_TCP_RETRIES2=48,
  340. NET_IPV4_TCP_FIN_TIMEOUT=49,
  341. NET_IPV4_IP_MASQ_DEBUG=50,
  342. NET_TCP_SYNCOOKIES=51,
  343. NET_TCP_STDURG=52,
  344. NET_TCP_RFC1337=53,
  345. NET_TCP_SYN_TAILDROP=54,
  346. NET_TCP_MAX_SYN_BACKLOG=55,
  347. NET_IPV4_LOCAL_PORT_RANGE=56,
  348. NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
  349. NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
  350. NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
  351. NET_IPV4_ICMP_DESTUNREACH_RATE=60,
  352. NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
  353. NET_IPV4_ICMP_PARAMPROB_RATE=62,
  354. NET_IPV4_ICMP_ECHOREPLY_RATE=63,
  355. NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
  356. NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
  357. NET_TCP_TW_RECYCLE=66,
  358. NET_IPV4_ALWAYS_DEFRAG=67,
  359. NET_IPV4_TCP_KEEPALIVE_INTVL=68,
  360. NET_IPV4_INET_PEER_THRESHOLD=69,
  361. NET_IPV4_INET_PEER_MINTTL=70,
  362. NET_IPV4_INET_PEER_MAXTTL=71,
  363. NET_IPV4_INET_PEER_GC_MINTIME=72,
  364. NET_IPV4_INET_PEER_GC_MAXTIME=73,
  365. NET_TCP_ORPHAN_RETRIES=74,
  366. NET_TCP_ABORT_ON_OVERFLOW=75,
  367. NET_TCP_SYNACK_RETRIES=76,
  368. NET_TCP_MAX_ORPHANS=77,
  369. NET_TCP_MAX_TW_BUCKETS=78,
  370. NET_TCP_FACK=79,
  371. NET_TCP_REORDERING=80,
  372. NET_TCP_ECN=81,
  373. NET_TCP_DSACK=82,
  374. NET_TCP_MEM=83,
  375. NET_TCP_WMEM=84,
  376. NET_TCP_RMEM=85,
  377. NET_TCP_APP_WIN=86,
  378. NET_TCP_ADV_WIN_SCALE=87,
  379. NET_IPV4_NONLOCAL_BIND=88,
  380. NET_IPV4_ICMP_RATELIMIT=89,
  381. NET_IPV4_ICMP_RATEMASK=90,
  382. NET_TCP_TW_REUSE=91,
  383. NET_TCP_FRTO=92,
  384. NET_TCP_LOW_LATENCY=93,
  385. NET_IPV4_IPFRAG_SECRET_INTERVAL=94,
  386. NET_IPV4_IGMP_MAX_MSF=96,
  387. NET_TCP_NO_METRICS_SAVE=97,
  388. NET_TCP_DEFAULT_WIN_SCALE=105,
  389. NET_TCP_MODERATE_RCVBUF=106,
  390. NET_TCP_TSO_WIN_DIVISOR=107,
  391. NET_TCP_BIC_BETA=108,
  392. NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109,
  393. NET_TCP_CONG_CONTROL=110,
  394. NET_TCP_ABC=111,
  395. NET_IPV4_IPFRAG_MAX_DIST=112,
  396. NET_TCP_MTU_PROBING=113,
  397. NET_TCP_BASE_MSS=114,
  398. NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115,
  399. NET_TCP_DMA_COPYBREAK=116,
  400. NET_TCP_SLOW_START_AFTER_IDLE=117,
  401. NET_CIPSOV4_CACHE_ENABLE=118,
  402. NET_CIPSOV4_CACHE_BUCKET_SIZE=119,
  403. NET_CIPSOV4_RBM_OPTFMT=120,
  404. NET_CIPSOV4_RBM_STRICTVALID=121,
  405. NET_TCP_AVAIL_CONG_CONTROL=122,
  406. NET_TCP_ALLOWED_CONG_CONTROL=123,
  407. };
  408. enum {
  409. NET_IPV4_ROUTE_FLUSH=1,
  410. NET_IPV4_ROUTE_MIN_DELAY=2,
  411. NET_IPV4_ROUTE_MAX_DELAY=3,
  412. NET_IPV4_ROUTE_GC_THRESH=4,
  413. NET_IPV4_ROUTE_MAX_SIZE=5,
  414. NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
  415. NET_IPV4_ROUTE_GC_TIMEOUT=7,
  416. NET_IPV4_ROUTE_GC_INTERVAL=8,
  417. NET_IPV4_ROUTE_REDIRECT_LOAD=9,
  418. NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
  419. NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
  420. NET_IPV4_ROUTE_ERROR_COST=12,
  421. NET_IPV4_ROUTE_ERROR_BURST=13,
  422. NET_IPV4_ROUTE_GC_ELASTICITY=14,
  423. NET_IPV4_ROUTE_MTU_EXPIRES=15,
  424. NET_IPV4_ROUTE_MIN_PMTU=16,
  425. NET_IPV4_ROUTE_MIN_ADVMSS=17,
  426. NET_IPV4_ROUTE_SECRET_INTERVAL=18,
  427. NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19,
  428. };
  429. enum
  430. {
  431. NET_PROTO_CONF_ALL=-2,
  432. NET_PROTO_CONF_DEFAULT=-3
  433. /* And device ifindices ... */
  434. };
  435. enum
  436. {
  437. NET_IPV4_CONF_FORWARDING=1,
  438. NET_IPV4_CONF_MC_FORWARDING=2,
  439. NET_IPV4_CONF_PROXY_ARP=3,
  440. NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
  441. NET_IPV4_CONF_SECURE_REDIRECTS=5,
  442. NET_IPV4_CONF_SEND_REDIRECTS=6,
  443. NET_IPV4_CONF_SHARED_MEDIA=7,
  444. NET_IPV4_CONF_RP_FILTER=8,
  445. NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
  446. NET_IPV4_CONF_BOOTP_RELAY=10,
  447. NET_IPV4_CONF_LOG_MARTIANS=11,
  448. NET_IPV4_CONF_TAG=12,
  449. NET_IPV4_CONF_ARPFILTER=13,
  450. NET_IPV4_CONF_MEDIUM_ID=14,
  451. NET_IPV4_CONF_NOXFRM=15,
  452. NET_IPV4_CONF_NOPOLICY=16,
  453. NET_IPV4_CONF_FORCE_IGMP_VERSION=17,
  454. NET_IPV4_CONF_ARP_ANNOUNCE=18,
  455. NET_IPV4_CONF_ARP_IGNORE=19,
  456. NET_IPV4_CONF_PROMOTE_SECONDARIES=20,
  457. NET_IPV4_CONF_ARP_ACCEPT=21,
  458. __NET_IPV4_CONF_MAX
  459. };
  460. /* /proc/sys/net/ipv4/netfilter */
  461. enum
  462. {
  463. NET_IPV4_NF_CONNTRACK_MAX=1,
  464. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2,
  465. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3,
  466. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4,
  467. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5,
  468. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6,
  469. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7,
  470. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8,
  471. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9,
  472. NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10,
  473. NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11,
  474. NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12,
  475. NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13,
  476. NET_IPV4_NF_CONNTRACK_BUCKETS=14,
  477. NET_IPV4_NF_CONNTRACK_LOG_INVALID=15,
  478. NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16,
  479. NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17,
  480. NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18,
  481. NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19,
  482. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20,
  483. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21,
  484. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22,
  485. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23,
  486. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24,
  487. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25,
  488. NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26,
  489. NET_IPV4_NF_CONNTRACK_COUNT=27,
  490. NET_IPV4_NF_CONNTRACK_CHECKSUM=28,
  491. };
  492. /* /proc/sys/net/ipv6 */
  493. enum {
  494. NET_IPV6_CONF=16,
  495. NET_IPV6_NEIGH=17,
  496. NET_IPV6_ROUTE=18,
  497. NET_IPV6_ICMP=19,
  498. NET_IPV6_BINDV6ONLY=20,
  499. NET_IPV6_IP6FRAG_HIGH_THRESH=21,
  500. NET_IPV6_IP6FRAG_LOW_THRESH=22,
  501. NET_IPV6_IP6FRAG_TIME=23,
  502. NET_IPV6_IP6FRAG_SECRET_INTERVAL=24,
  503. NET_IPV6_MLD_MAX_MSF=25,
  504. };
  505. enum {
  506. NET_IPV6_ROUTE_FLUSH=1,
  507. NET_IPV6_ROUTE_GC_THRESH=2,
  508. NET_IPV6_ROUTE_MAX_SIZE=3,
  509. NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
  510. NET_IPV6_ROUTE_GC_TIMEOUT=5,
  511. NET_IPV6_ROUTE_GC_INTERVAL=6,
  512. NET_IPV6_ROUTE_GC_ELASTICITY=7,
  513. NET_IPV6_ROUTE_MTU_EXPIRES=8,
  514. NET_IPV6_ROUTE_MIN_ADVMSS=9,
  515. NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10
  516. };
  517. enum {
  518. NET_IPV6_FORWARDING=1,
  519. NET_IPV6_HOP_LIMIT=2,
  520. NET_IPV6_MTU=3,
  521. NET_IPV6_ACCEPT_RA=4,
  522. NET_IPV6_ACCEPT_REDIRECTS=5,
  523. NET_IPV6_AUTOCONF=6,
  524. NET_IPV6_DAD_TRANSMITS=7,
  525. NET_IPV6_RTR_SOLICITS=8,
  526. NET_IPV6_RTR_SOLICIT_INTERVAL=9,
  527. NET_IPV6_RTR_SOLICIT_DELAY=10,
  528. NET_IPV6_USE_TEMPADDR=11,
  529. NET_IPV6_TEMP_VALID_LFT=12,
  530. NET_IPV6_TEMP_PREFERED_LFT=13,
  531. NET_IPV6_REGEN_MAX_RETRY=14,
  532. NET_IPV6_MAX_DESYNC_FACTOR=15,
  533. NET_IPV6_MAX_ADDRESSES=16,
  534. NET_IPV6_FORCE_MLD_VERSION=17,
  535. NET_IPV6_ACCEPT_RA_DEFRTR=18,
  536. NET_IPV6_ACCEPT_RA_PINFO=19,
  537. NET_IPV6_ACCEPT_RA_RTR_PREF=20,
  538. NET_IPV6_RTR_PROBE_INTERVAL=21,
  539. NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22,
  540. NET_IPV6_PROXY_NDP=23,
  541. NET_IPV6_ACCEPT_SOURCE_ROUTE=25,
  542. __NET_IPV6_MAX
  543. };
  544. /* /proc/sys/net/ipv6/icmp */
  545. enum {
  546. NET_IPV6_ICMP_RATELIMIT=1
  547. };
  548. /* /proc/sys/net/<protocol>/neigh/<dev> */
  549. enum {
  550. NET_NEIGH_MCAST_SOLICIT=1,
  551. NET_NEIGH_UCAST_SOLICIT=2,
  552. NET_NEIGH_APP_SOLICIT=3,
  553. NET_NEIGH_RETRANS_TIME=4,
  554. NET_NEIGH_REACHABLE_TIME=5,
  555. NET_NEIGH_DELAY_PROBE_TIME=6,
  556. NET_NEIGH_GC_STALE_TIME=7,
  557. NET_NEIGH_UNRES_QLEN=8,
  558. NET_NEIGH_PROXY_QLEN=9,
  559. NET_NEIGH_ANYCAST_DELAY=10,
  560. NET_NEIGH_PROXY_DELAY=11,
  561. NET_NEIGH_LOCKTIME=12,
  562. NET_NEIGH_GC_INTERVAL=13,
  563. NET_NEIGH_GC_THRESH1=14,
  564. NET_NEIGH_GC_THRESH2=15,
  565. NET_NEIGH_GC_THRESH3=16,
  566. NET_NEIGH_RETRANS_TIME_MS=17,
  567. NET_NEIGH_REACHABLE_TIME_MS=18,
  568. __NET_NEIGH_MAX
  569. };
  570. /* /proc/sys/net/dccp */
  571. enum {
  572. NET_DCCP_DEFAULT=1,
  573. };
  574. /* /proc/sys/net/ipx */
  575. enum {
  576. NET_IPX_PPROP_BROADCASTING=1,
  577. NET_IPX_FORWARDING=2
  578. };
  579. /* /proc/sys/net/llc */
  580. enum {
  581. NET_LLC2=1,
  582. NET_LLC_STATION=2,
  583. };
  584. /* /proc/sys/net/llc/llc2 */
  585. enum {
  586. NET_LLC2_TIMEOUT=1,
  587. };
  588. /* /proc/sys/net/llc/station */
  589. enum {
  590. NET_LLC_STATION_ACK_TIMEOUT=1,
  591. };
  592. /* /proc/sys/net/llc/llc2/timeout */
  593. enum {
  594. NET_LLC2_ACK_TIMEOUT=1,
  595. NET_LLC2_P_TIMEOUT=2,
  596. NET_LLC2_REJ_TIMEOUT=3,
  597. NET_LLC2_BUSY_TIMEOUT=4,
  598. };
  599. /* /proc/sys/net/appletalk */
  600. enum {
  601. NET_ATALK_AARP_EXPIRY_TIME=1,
  602. NET_ATALK_AARP_TICK_TIME=2,
  603. NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
  604. NET_ATALK_AARP_RESOLVE_TIME=4
  605. };
  606. /* /proc/sys/net/netrom */
  607. enum {
  608. NET_NETROM_DEFAULT_PATH_QUALITY=1,
  609. NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
  610. NET_NETROM_NETWORK_TTL_INITIALISER=3,
  611. NET_NETROM_TRANSPORT_TIMEOUT=4,
  612. NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
  613. NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
  614. NET_NETROM_TRANSPORT_BUSY_DELAY=7,
  615. NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
  616. NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
  617. NET_NETROM_ROUTING_CONTROL=10,
  618. NET_NETROM_LINK_FAILS_COUNT=11,
  619. NET_NETROM_RESET=12
  620. };
  621. /* /proc/sys/net/ax25 */
  622. enum {
  623. NET_AX25_IP_DEFAULT_MODE=1,
  624. NET_AX25_DEFAULT_MODE=2,
  625. NET_AX25_BACKOFF_TYPE=3,
  626. NET_AX25_CONNECT_MODE=4,
  627. NET_AX25_STANDARD_WINDOW=5,
  628. NET_AX25_EXTENDED_WINDOW=6,
  629. NET_AX25_T1_TIMEOUT=7,
  630. NET_AX25_T2_TIMEOUT=8,
  631. NET_AX25_T3_TIMEOUT=9,
  632. NET_AX25_IDLE_TIMEOUT=10,
  633. NET_AX25_N2=11,
  634. NET_AX25_PACLEN=12,
  635. NET_AX25_PROTOCOL=13,
  636. NET_AX25_DAMA_SLAVE_TIMEOUT=14
  637. };
  638. /* /proc/sys/net/rose */
  639. enum {
  640. NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
  641. NET_ROSE_CALL_REQUEST_TIMEOUT=2,
  642. NET_ROSE_RESET_REQUEST_TIMEOUT=3,
  643. NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
  644. NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
  645. NET_ROSE_ROUTING_CONTROL=6,
  646. NET_ROSE_LINK_FAIL_TIMEOUT=7,
  647. NET_ROSE_MAX_VCS=8,
  648. NET_ROSE_WINDOW_SIZE=9,
  649. NET_ROSE_NO_ACTIVITY_TIMEOUT=10
  650. };
  651. /* /proc/sys/net/x25 */
  652. enum {
  653. NET_X25_RESTART_REQUEST_TIMEOUT=1,
  654. NET_X25_CALL_REQUEST_TIMEOUT=2,
  655. NET_X25_RESET_REQUEST_TIMEOUT=3,
  656. NET_X25_CLEAR_REQUEST_TIMEOUT=4,
  657. NET_X25_ACK_HOLD_BACK_TIMEOUT=5,
  658. NET_X25_FORWARD=6
  659. };
  660. /* /proc/sys/net/token-ring */
  661. enum
  662. {
  663. NET_TR_RIF_TIMEOUT=1
  664. };
  665. /* /proc/sys/net/decnet/ */
  666. enum {
  667. NET_DECNET_NODE_TYPE = 1,
  668. NET_DECNET_NODE_ADDRESS = 2,
  669. NET_DECNET_NODE_NAME = 3,
  670. NET_DECNET_DEFAULT_DEVICE = 4,
  671. NET_DECNET_TIME_WAIT = 5,
  672. NET_DECNET_DN_COUNT = 6,
  673. NET_DECNET_DI_COUNT = 7,
  674. NET_DECNET_DR_COUNT = 8,
  675. NET_DECNET_DST_GC_INTERVAL = 9,
  676. NET_DECNET_CONF = 10,
  677. NET_DECNET_NO_FC_MAX_CWND = 11,
  678. NET_DECNET_MEM = 12,
  679. NET_DECNET_RMEM = 13,
  680. NET_DECNET_WMEM = 14,
  681. NET_DECNET_DEBUG_LEVEL = 255
  682. };
  683. /* /proc/sys/net/decnet/conf/<dev> */
  684. enum {
  685. NET_DECNET_CONF_LOOPBACK = -2,
  686. NET_DECNET_CONF_DDCMP = -3,
  687. NET_DECNET_CONF_PPP = -4,
  688. NET_DECNET_CONF_X25 = -5,
  689. NET_DECNET_CONF_GRE = -6,
  690. NET_DECNET_CONF_ETHER = -7
  691. /* ... and ifindex of devices */
  692. };
  693. /* /proc/sys/net/decnet/conf/<dev>/ */
  694. enum {
  695. NET_DECNET_CONF_DEV_PRIORITY = 1,
  696. NET_DECNET_CONF_DEV_T1 = 2,
  697. NET_DECNET_CONF_DEV_T2 = 3,
  698. NET_DECNET_CONF_DEV_T3 = 4,
  699. NET_DECNET_CONF_DEV_FORWARDING = 5,
  700. NET_DECNET_CONF_DEV_BLKSIZE = 6,
  701. NET_DECNET_CONF_DEV_STATE = 7
  702. };
  703. /* /proc/sys/net/sctp */
  704. enum {
  705. NET_SCTP_RTO_INITIAL = 1,
  706. NET_SCTP_RTO_MIN = 2,
  707. NET_SCTP_RTO_MAX = 3,
  708. NET_SCTP_RTO_ALPHA = 4,
  709. NET_SCTP_RTO_BETA = 5,
  710. NET_SCTP_VALID_COOKIE_LIFE = 6,
  711. NET_SCTP_ASSOCIATION_MAX_RETRANS = 7,
  712. NET_SCTP_PATH_MAX_RETRANS = 8,
  713. NET_SCTP_MAX_INIT_RETRANSMITS = 9,
  714. NET_SCTP_HB_INTERVAL = 10,
  715. NET_SCTP_PRESERVE_ENABLE = 11,
  716. NET_SCTP_MAX_BURST = 12,
  717. NET_SCTP_ADDIP_ENABLE = 13,
  718. NET_SCTP_PRSCTP_ENABLE = 14,
  719. NET_SCTP_SNDBUF_POLICY = 15,
  720. NET_SCTP_SACK_TIMEOUT = 16,
  721. NET_SCTP_RCVBUF_POLICY = 17,
  722. };
  723. /* /proc/sys/net/bridge */
  724. enum {
  725. NET_BRIDGE_NF_CALL_ARPTABLES = 1,
  726. NET_BRIDGE_NF_CALL_IPTABLES = 2,
  727. NET_BRIDGE_NF_CALL_IP6TABLES = 3,
  728. NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4,
  729. };
  730. /* CTL_FS names: */
  731. enum
  732. {
  733. FS_NRINODE=1, /* int:current number of allocated inodes */
  734. FS_STATINODE=2,
  735. FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */
  736. FS_NRDQUOT=4, /* int:current number of allocated dquots */
  737. FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */
  738. FS_NRFILE=6, /* int:current number of allocated filedescriptors */
  739. FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */
  740. FS_DENTRY=8,
  741. FS_NRSUPER=9, /* int:current number of allocated super_blocks */
  742. FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */
  743. FS_OVERFLOWUID=11, /* int: overflow UID */
  744. FS_OVERFLOWGID=12, /* int: overflow GID */
  745. FS_LEASES=13, /* int: leases enabled */
  746. FS_DIR_NOTIFY=14, /* int: directory notification enabled */
  747. FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */
  748. FS_DQSTATS=16, /* disc quota usage statistics and control */
  749. FS_XFS=17, /* struct: control xfs parameters */
  750. FS_AIO_NR=18, /* current system-wide number of aio requests */
  751. FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */
  752. FS_INOTIFY=20, /* inotify submenu */
  753. FS_OCFS2=988, /* ocfs2 */
  754. };
  755. /* /proc/sys/fs/quota/ */
  756. enum {
  757. FS_DQ_LOOKUPS = 1,
  758. FS_DQ_DROPS = 2,
  759. FS_DQ_READS = 3,
  760. FS_DQ_WRITES = 4,
  761. FS_DQ_CACHE_HITS = 5,
  762. FS_DQ_ALLOCATED = 6,
  763. FS_DQ_FREE = 7,
  764. FS_DQ_SYNCS = 8,
  765. FS_DQ_WARNINGS = 9,
  766. };
  767. /* CTL_DEBUG names: */
  768. /* CTL_DEV names: */
  769. enum {
  770. DEV_CDROM=1,
  771. DEV_HWMON=2,
  772. DEV_PARPORT=3,
  773. DEV_RAID=4,
  774. DEV_MAC_HID=5,
  775. DEV_SCSI=6,
  776. DEV_IPMI=7,
  777. };
  778. /* /proc/sys/dev/cdrom */
  779. enum {
  780. DEV_CDROM_INFO=1,
  781. DEV_CDROM_AUTOCLOSE=2,
  782. DEV_CDROM_AUTOEJECT=3,
  783. DEV_CDROM_DEBUG=4,
  784. DEV_CDROM_LOCK=5,
  785. DEV_CDROM_CHECK_MEDIA=6
  786. };
  787. /* /proc/sys/dev/parport */
  788. enum {
  789. DEV_PARPORT_DEFAULT=-3
  790. };
  791. /* /proc/sys/dev/raid */
  792. enum {
  793. DEV_RAID_SPEED_LIMIT_MIN=1,
  794. DEV_RAID_SPEED_LIMIT_MAX=2
  795. };
  796. /* /proc/sys/dev/parport/default */
  797. enum {
  798. DEV_PARPORT_DEFAULT_TIMESLICE=1,
  799. DEV_PARPORT_DEFAULT_SPINTIME=2
  800. };
  801. /* /proc/sys/dev/parport/parport n */
  802. enum {
  803. DEV_PARPORT_SPINTIME=1,
  804. DEV_PARPORT_BASE_ADDR=2,
  805. DEV_PARPORT_IRQ=3,
  806. DEV_PARPORT_DMA=4,
  807. DEV_PARPORT_MODES=5,
  808. DEV_PARPORT_DEVICES=6,
  809. DEV_PARPORT_AUTOPROBE=16
  810. };
  811. /* /proc/sys/dev/parport/parport n/devices/ */
  812. enum {
  813. DEV_PARPORT_DEVICES_ACTIVE=-3,
  814. };
  815. /* /proc/sys/dev/parport/parport n/devices/device n */
  816. enum {
  817. DEV_PARPORT_DEVICE_TIMESLICE=1,
  818. };
  819. /* /proc/sys/dev/mac_hid */
  820. enum {
  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
  827. };
  828. /* /proc/sys/dev/scsi */
  829. enum {
  830. DEV_SCSI_LOGGING_LEVEL=1,
  831. };
  832. /* /proc/sys/dev/ipmi */
  833. enum {
  834. DEV_IPMI_POWEROFF_POWERCYCLE=1,
  835. };
  836. /* /proc/sys/abi */
  837. enum
  838. {
  839. ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */
  840. ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */
  841. ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */
  842. ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */
  843. ABI_TRACE=5, /* tracing flags */
  844. ABI_FAKE_UTSNAME=6, /* fake target utsname information */
  845. };
  846. #ifdef __KERNEL__
  847. #include <linux/list.h>
  848. /* For the /proc/sys support */
  849. struct ctl_table;
  850. extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev);
  851. extern void sysctl_head_finish(struct ctl_table_header *prev);
  852. extern int sysctl_perm(struct ctl_table *table, int op);
  853. typedef struct ctl_table ctl_table;
  854. typedef int ctl_handler (ctl_table *table, int __user *name, int nlen,
  855. void __user *oldval, size_t __user *oldlenp,
  856. void __user *newval, size_t newlen);
  857. typedef int proc_handler (ctl_table *ctl, int write, struct file * filp,
  858. void __user *buffer, size_t *lenp, loff_t *ppos);
  859. extern int proc_dostring(ctl_table *, int, struct file *,
  860. void __user *, size_t *, loff_t *);
  861. extern int proc_dointvec(ctl_table *, int, struct file *,
  862. void __user *, size_t *, loff_t *);
  863. extern int proc_dointvec_bset(ctl_table *, int, struct file *,
  864. void __user *, size_t *, loff_t *);
  865. extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
  866. void __user *, size_t *, loff_t *);
  867. extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
  868. void __user *, size_t *, loff_t *);
  869. extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
  870. void __user *, size_t *, loff_t *);
  871. extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *,
  872. void __user *, size_t *, loff_t *);
  873. extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
  874. void __user *, size_t *, loff_t *);
  875. extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,
  876. struct file *, void __user *, size_t *, loff_t *);
  877. extern int do_sysctl (int __user *name, int nlen,
  878. void __user *oldval, size_t __user *oldlenp,
  879. void __user *newval, size_t newlen);
  880. extern int do_sysctl_strategy (ctl_table *table,
  881. int __user *name, int nlen,
  882. void __user *oldval, size_t __user *oldlenp,
  883. void __user *newval, size_t newlen);
  884. extern ctl_handler sysctl_string;
  885. extern ctl_handler sysctl_intvec;
  886. extern ctl_handler sysctl_jiffies;
  887. extern ctl_handler sysctl_ms_jiffies;
  888. /*
  889. * Register a set of sysctl names by calling register_sysctl_table
  890. * with an initialised array of ctl_table's. An entry with zero
  891. * ctl_name and NULL procname terminates the table. table->de will be
  892. * set up by the registration and need not be initialised in advance.
  893. *
  894. * sysctl names can be mirrored automatically under /proc/sys. The
  895. * procname supplied controls /proc naming.
  896. *
  897. * The table's mode will be honoured both for sys_sysctl(2) and
  898. * proc-fs access.
  899. *
  900. * Leaf nodes in the sysctl tree will be represented by a single file
  901. * under /proc; non-leaf nodes will be represented by directories. A
  902. * null procname disables /proc mirroring at this node.
  903. *
  904. * sysctl entries with a zero ctl_name will not be available through
  905. * the binary sysctl interface.
  906. *
  907. * sysctl(2) can automatically manage read and write requests through
  908. * the sysctl table. The data and maxlen fields of the ctl_table
  909. * struct enable minimal validation of the values being written to be
  910. * performed, and the mode field allows minimal authentication.
  911. *
  912. * More sophisticated management can be enabled by the provision of a
  913. * strategy routine with the table entry. This will be called before
  914. * any automatic read or write of the data is performed.
  915. *
  916. * The strategy routine may return:
  917. * <0: Error occurred (error is passed to user process)
  918. * 0: OK - proceed with automatic read or write.
  919. * >0: OK - read or write has been done by the strategy routine, so
  920. * return immediately.
  921. *
  922. * There must be a proc_handler routine for any terminal nodes
  923. * mirrored under /proc/sys (non-terminals are handled by a built-in
  924. * directory handler). Several default handlers are available to
  925. * cover common cases.
  926. */
  927. /* A sysctl table is an array of struct ctl_table: */
  928. struct ctl_table
  929. {
  930. int ctl_name; /* Binary ID */
  931. const char *procname; /* Text ID for /proc/sys, or zero */
  932. void *data;
  933. int maxlen;
  934. mode_t mode;
  935. ctl_table *child;
  936. ctl_table *parent; /* Automatically set */
  937. proc_handler *proc_handler; /* Callback for text formatting */
  938. ctl_handler *strategy; /* Callback function for all r/w */
  939. void *extra1;
  940. void *extra2;
  941. };
  942. /* struct ctl_table_header is used to maintain dynamic lists of
  943. ctl_table trees. */
  944. struct ctl_table_header
  945. {
  946. ctl_table *ctl_table;
  947. struct list_head ctl_entry;
  948. int used;
  949. struct completion *unregistering;
  950. };
  951. struct ctl_table_header * register_sysctl_table(ctl_table * table);
  952. void unregister_sysctl_table(struct ctl_table_header * table);
  953. #else /* __KERNEL__ */
  954. #endif /* __KERNEL__ */
  955. #endif /* _LINUX_SYSCTL_H */