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 25#ifndef _LINUX_SYSCTL_H 26#define _LINUX_SYSCTL_H 27 28#include <linux/kernel.h> 29#include <linux/types.h> 30#include <linux/compiler.h> 31 32struct file; 33struct completion; 34 35#define CTL_MAXNAME 10 /* how many path components do we allow in a 36 call to sysctl? In other words, what is 37 the largest acceptable value for the nlen 38 member of a struct __sysctl_args to have? */ 39 40struct __sysctl_args { 41 int __user *name; 42 int nlen; 43 void __user *oldval; 44 size_t __user *oldlenp; 45 void __user *newval; 46 size_t newlen; 47 unsigned long __unused[4]; 48}; 49 50/* Define sysctl names first */ 51 52/* Top-level names: */ 53 54/* For internal pattern-matching use only: */ 55#ifdef __KERNEL__ 56#define CTL_NONE 0 57#define CTL_UNNUMBERED CTL_NONE /* sysctl without a binary number */ 58#endif 59 60enum 61{ 62 CTL_KERN=1, /* General kernel info and control */ 63 CTL_VM=2, /* VM management */ 64 CTL_NET=3, /* Networking */ 65 /* was CTL_PROC */ 66 CTL_FS=5, /* Filesystems */ 67 CTL_DEBUG=6, /* Debugging */ 68 CTL_DEV=7, /* Devices */ 69 CTL_BUS=8, /* Busses */ 70 CTL_ABI=9, /* Binary emulation */ 71 CTL_CPU=10, /* CPU stuff (speed scaling, etc) */ 72 CTL_ARLAN=254, /* arlan wireless driver */ 73 CTL_APPLDATA=2120, /* s390 appldata */ 74 CTL_S390DBF=5677, /* s390 debug */ 75 CTL_SUNRPC=7249, /* sunrpc debug */ 76 CTL_PM=9899, /* frv power management */ 77 CTL_FRV=9898, /* frv specific sysctls */ 78}; 79 80/* CTL_BUS names: */ 81enum 82{ 83 CTL_BUS_ISA=1 /* ISA */ 84}; 85 86/* /proc/sys/fs/inotify/ */ 87enum 88{ 89 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */ 90 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */ 91 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */ 92}; 93 94/* CTL_KERN names: */ 95enum 96{ 97 KERN_OSTYPE=1, /* string: system version */ 98 KERN_OSRELEASE=2, /* string: system release */ 99 KERN_OSREV=3, /* int: system revision */ 100 KERN_VERSION=4, /* string: compile time info */ 101 KERN_SECUREMASK=5, /* struct: maximum rights mask */ 102 KERN_PROF=6, /* table: profiling information */ 103 KERN_NODENAME=7, 104 KERN_DOMAINNAME=8, 105 106 KERN_CAP_BSET=14, /* int: capability bounding set */ 107 KERN_PANIC=15, /* int: panic timeout */ 108 KERN_REALROOTDEV=16, /* real root device to mount after initrd */ 109 110 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */ 111 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */ 112 KERN_PRINTK=23, /* struct: control printk logging parameters */ 113 KERN_NAMETRANS=24, /* Name translation */ 114 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */ 115 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */ 116 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */ 117 KERN_MODPROBE=28, 118 KERN_SG_BIG_BUFF=29, 119 KERN_ACCT=30, /* BSD process accounting parameters */ 120 KERN_PPC_L2CR=31, /* l2cr register on PPC */ 121 122 KERN_RTSIGNR=32, /* Number of rt sigs queued */ 123 KERN_RTSIGMAX=33, /* Max queuable */ 124 125 KERN_SHMMAX=34, /* long: Maximum shared memory segment */ 126 KERN_MSGMAX=35, /* int: Maximum size of a messege */ 127 KERN_MSGMNB=36, /* int: Maximum message queue size */ 128 KERN_MSGPOOL=37, /* int: Maximum system message pool size */ 129 KERN_SYSRQ=38, /* int: Sysreq enable */ 130 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */ 131 KERN_RANDOM=40, /* Random driver */ 132 KERN_SHMALL=41, /* int: Maximum size of shared memory */ 133 KERN_MSGMNI=42, /* int: msg queue identifiers */ 134 KERN_SEM=43, /* struct: sysv semaphore limits */ 135 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */ 136 KERN_SHMMNI=45, /* int: shm array identifiers */ 137 KERN_OVERFLOWUID=46, /* int: overflow UID */ 138 KERN_OVERFLOWGID=47, /* int: overflow GID */ 139 KERN_SHMPATH=48, /* string: path to shm fs */ 140 KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */ 141 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */ 142 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */ 143 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */ 144 KERN_TAINTED=53, /* int: various kernel tainted flags */ 145 KERN_CADPID=54, /* int: PID of the process to notify on CAD */ 146 KERN_PIDMAX=55, /* int: PID # limit */ 147 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */ 148 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */ 149 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */ 150 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */ 151 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */ 152 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */ 153 KERN_PTY=62, /* dir: pty driver */ 154 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */ 155 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */ 156 KERN_HZ_TIMER=65, /* int: hz timer on or off */ 157 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */ 158 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */ 159 KERN_RANDOMIZE=68, /* int: randomize virtual address space */ 160 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */ 161 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */ 162 KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */ 163 KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */ 164 KERN_COMPAT_LOG=73, /* int: print compat layer messages */ 165 KERN_MAX_LOCK_DEPTH=74, 166 KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */ 167 KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */ 168}; 169 170 171 172/* CTL_VM names: */ 173enum 174{ 175 VM_UNUSED1=1, /* was: struct: Set vm swapping control */ 176 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */ 177 VM_UNUSED3=3, /* was: struct: Set free page thresholds */ 178 VM_UNUSED4=4, /* Spare */ 179 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */ 180 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */ 181 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */ 182 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */ 183 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */ 184 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */ 185 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */ 186 VM_DIRTY_RATIO=12, /* dirty_ratio */ 187 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */ 188 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */ 189 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */ 190 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */ 191 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */ 192 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */ 193 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */ 194 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */ 195 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */ 196 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */ 197 VM_LAPTOP_MODE=23, /* vm laptop mode */ 198 VM_BLOCK_DUMP=24, /* block dump mode */ 199 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */ 200 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */ 201 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */ 202 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */ 203 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */ 204 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */ 205 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */ 206 VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */ 207 VM_PANIC_ON_OOM=33, /* panic at out-of-memory */ 208 VM_VDSO_ENABLED=34, /* map VDSO into new processes? */ 209 VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */ 210 211 /* s390 vm cmm sysctls */ 212 VM_CMM_PAGES=1111, 213 VM_CMM_TIMED_PAGES=1112, 214 VM_CMM_TIMEOUT=1113, 215}; 216 217 218/* CTL_NET names: */ 219enum 220{ 221 NET_CORE=1, 222 NET_ETHER=2, 223 NET_802=3, 224 NET_UNIX=4, 225 NET_IPV4=5, 226 NET_IPX=6, 227 NET_ATALK=7, 228 NET_NETROM=8, 229 NET_AX25=9, 230 NET_BRIDGE=10, 231 NET_ROSE=11, 232 NET_IPV6=12, 233 NET_X25=13, 234 NET_TR=14, 235 NET_DECNET=15, 236 NET_ECONET=16, 237 NET_SCTP=17, 238 NET_LLC=18, 239 NET_NETFILTER=19, 240 NET_DCCP=20, 241}; 242 243/* /proc/sys/kernel/random */ 244enum 245{ 246 RANDOM_POOLSIZE=1, 247 RANDOM_ENTROPY_COUNT=2, 248 RANDOM_READ_THRESH=3, 249 RANDOM_WRITE_THRESH=4, 250 RANDOM_BOOT_ID=5, 251 RANDOM_UUID=6 252}; 253 254/* /proc/sys/kernel/pty */ 255enum 256{ 257 PTY_MAX=1, 258 PTY_NR=2 259}; 260 261/* /proc/sys/bus/isa */ 262enum 263{ 264 BUS_ISA_MEM_BASE=1, 265 BUS_ISA_PORT_BASE=2, 266 BUS_ISA_PORT_SHIFT=3 267}; 268 269/* /proc/sys/net/core */ 270enum 271{ 272 NET_CORE_WMEM_MAX=1, 273 NET_CORE_RMEM_MAX=2, 274 NET_CORE_WMEM_DEFAULT=3, 275 NET_CORE_RMEM_DEFAULT=4, 276/* was NET_CORE_DESTROY_DELAY */ 277 NET_CORE_MAX_BACKLOG=6, 278 NET_CORE_FASTROUTE=7, 279 NET_CORE_MSG_COST=8, 280 NET_CORE_MSG_BURST=9, 281 NET_CORE_OPTMEM_MAX=10, 282 NET_CORE_HOT_LIST_LENGTH=11, 283 NET_CORE_DIVERT_VERSION=12, 284 NET_CORE_NO_CONG_THRESH=13, 285 NET_CORE_NO_CONG=14, 286 NET_CORE_LO_CONG=15, 287 NET_CORE_MOD_CONG=16, 288 NET_CORE_DEV_WEIGHT=17, 289 NET_CORE_SOMAXCONN=18, 290 NET_CORE_BUDGET=19, 291 NET_CORE_AEVENT_ETIME=20, 292 NET_CORE_AEVENT_RSEQTH=21, 293 NET_CORE_WARNINGS=22, 294}; 295 296/* /proc/sys/net/ethernet */ 297 298/* /proc/sys/net/802 */ 299 300/* /proc/sys/net/unix */ 301 302enum 303{ 304 NET_UNIX_DESTROY_DELAY=1, 305 NET_UNIX_DELETE_DELAY=2, 306 NET_UNIX_MAX_DGRAM_QLEN=3, 307}; 308 309/* /proc/sys/net/netfilter */ 310enum 311{ 312 NET_NF_CONNTRACK_MAX=1, 313 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 314 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 315 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 316 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 317 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 318 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 319 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 320 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 321 NET_NF_CONNTRACK_UDP_TIMEOUT=10, 322 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 323 NET_NF_CONNTRACK_ICMP_TIMEOUT=12, 324 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13, 325 NET_NF_CONNTRACK_BUCKETS=14, 326 NET_NF_CONNTRACK_LOG_INVALID=15, 327 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 328 NET_NF_CONNTRACK_TCP_LOOSE=17, 329 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18, 330 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19, 331 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 332 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 333 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 334 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 335 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 336 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 337 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 338 NET_NF_CONNTRACK_COUNT=27, 339 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28, 340 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29, 341 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30, 342 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31, 343 NET_NF_CONNTRACK_CHECKSUM=32, 344}; 345 346/* /proc/sys/net/ipv4 */ 347enum 348{ 349 /* v2.0 compatibile variables */ 350 NET_IPV4_FORWARD=8, 351 NET_IPV4_DYNADDR=9, 352 353 NET_IPV4_CONF=16, 354 NET_IPV4_NEIGH=17, 355 NET_IPV4_ROUTE=18, 356 NET_IPV4_FIB_HASH=19, 357 NET_IPV4_NETFILTER=20, 358 359 NET_IPV4_TCP_TIMESTAMPS=33, 360 NET_IPV4_TCP_WINDOW_SCALING=34, 361 NET_IPV4_TCP_SACK=35, 362 NET_IPV4_TCP_RETRANS_COLLAPSE=36, 363 NET_IPV4_DEFAULT_TTL=37, 364 NET_IPV4_AUTOCONFIG=38, 365 NET_IPV4_NO_PMTU_DISC=39, 366 NET_IPV4_TCP_SYN_RETRIES=40, 367 NET_IPV4_IPFRAG_HIGH_THRESH=41, 368 NET_IPV4_IPFRAG_LOW_THRESH=42, 369 NET_IPV4_IPFRAG_TIME=43, 370 NET_IPV4_TCP_MAX_KA_PROBES=44, 371 NET_IPV4_TCP_KEEPALIVE_TIME=45, 372 NET_IPV4_TCP_KEEPALIVE_PROBES=46, 373 NET_IPV4_TCP_RETRIES1=47, 374 NET_IPV4_TCP_RETRIES2=48, 375 NET_IPV4_TCP_FIN_TIMEOUT=49, 376 NET_IPV4_IP_MASQ_DEBUG=50, 377 NET_TCP_SYNCOOKIES=51, 378 NET_TCP_STDURG=52, 379 NET_TCP_RFC1337=53, 380 NET_TCP_SYN_TAILDROP=54, 381 NET_TCP_MAX_SYN_BACKLOG=55, 382 NET_IPV4_LOCAL_PORT_RANGE=56, 383 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, 384 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, 385 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, 386 NET_IPV4_ICMP_DESTUNREACH_RATE=60, 387 NET_IPV4_ICMP_TIMEEXCEED_RATE=61, 388 NET_IPV4_ICMP_PARAMPROB_RATE=62, 389 NET_IPV4_ICMP_ECHOREPLY_RATE=63, 390 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, 391 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, 392 NET_TCP_TW_RECYCLE=66, 393 NET_IPV4_ALWAYS_DEFRAG=67, 394 NET_IPV4_TCP_KEEPALIVE_INTVL=68, 395 NET_IPV4_INET_PEER_THRESHOLD=69, 396 NET_IPV4_INET_PEER_MINTTL=70, 397 NET_IPV4_INET_PEER_MAXTTL=71, 398 NET_IPV4_INET_PEER_GC_MINTIME=72, 399 NET_IPV4_INET_PEER_GC_MAXTIME=73, 400 NET_TCP_ORPHAN_RETRIES=74, 401 NET_TCP_ABORT_ON_OVERFLOW=75, 402 NET_TCP_SYNACK_RETRIES=76, 403 NET_TCP_MAX_ORPHANS=77, 404 NET_TCP_MAX_TW_BUCKETS=78, 405 NET_TCP_FACK=79, 406 NET_TCP_REORDERING=80, 407 NET_TCP_ECN=81, 408 NET_TCP_DSACK=82, 409 NET_TCP_MEM=83, 410 NET_TCP_WMEM=84, 411 NET_TCP_RMEM=85, 412 NET_TCP_APP_WIN=86, 413 NET_TCP_ADV_WIN_SCALE=87, 414 NET_IPV4_NONLOCAL_BIND=88, 415 NET_IPV4_ICMP_RATELIMIT=89, 416 NET_IPV4_ICMP_RATEMASK=90, 417 NET_TCP_TW_REUSE=91, 418 NET_TCP_FRTO=92, 419 NET_TCP_LOW_LATENCY=93, 420 NET_IPV4_IPFRAG_SECRET_INTERVAL=94, 421 NET_IPV4_IGMP_MAX_MSF=96, 422 NET_TCP_NO_METRICS_SAVE=97, 423 NET_TCP_DEFAULT_WIN_SCALE=105, 424 NET_TCP_MODERATE_RCVBUF=106, 425 NET_TCP_TSO_WIN_DIVISOR=107, 426 NET_TCP_BIC_BETA=108, 427 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109, 428 NET_TCP_CONG_CONTROL=110, 429 NET_TCP_ABC=111, 430 NET_IPV4_IPFRAG_MAX_DIST=112, 431 NET_TCP_MTU_PROBING=113, 432 NET_TCP_BASE_MSS=114, 433 NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115, 434 NET_TCP_DMA_COPYBREAK=116, 435 NET_TCP_SLOW_START_AFTER_IDLE=117, 436 NET_CIPSOV4_CACHE_ENABLE=118, 437 NET_CIPSOV4_CACHE_BUCKET_SIZE=119, 438 NET_CIPSOV4_RBM_OPTFMT=120, 439 NET_CIPSOV4_RBM_STRICTVALID=121, 440 NET_TCP_AVAIL_CONG_CONTROL=122, 441 NET_TCP_ALLOWED_CONG_CONTROL=123, 442 NET_TCP_MAX_SSTHRESH=124, 443 NET_TCP_FRTO_RESPONSE=125, 444}; 445 446enum { 447 NET_IPV4_ROUTE_FLUSH=1, 448 NET_IPV4_ROUTE_MIN_DELAY=2, 449 NET_IPV4_ROUTE_MAX_DELAY=3, 450 NET_IPV4_ROUTE_GC_THRESH=4, 451 NET_IPV4_ROUTE_MAX_SIZE=5, 452 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, 453 NET_IPV4_ROUTE_GC_TIMEOUT=7, 454 NET_IPV4_ROUTE_GC_INTERVAL=8, 455 NET_IPV4_ROUTE_REDIRECT_LOAD=9, 456 NET_IPV4_ROUTE_REDIRECT_NUMBER=10, 457 NET_IPV4_ROUTE_REDIRECT_SILENCE=11, 458 NET_IPV4_ROUTE_ERROR_COST=12, 459 NET_IPV4_ROUTE_ERROR_BURST=13, 460 NET_IPV4_ROUTE_GC_ELASTICITY=14, 461 NET_IPV4_ROUTE_MTU_EXPIRES=15, 462 NET_IPV4_ROUTE_MIN_PMTU=16, 463 NET_IPV4_ROUTE_MIN_ADVMSS=17, 464 NET_IPV4_ROUTE_SECRET_INTERVAL=18, 465 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19, 466}; 467 468enum 469{ 470 NET_PROTO_CONF_ALL=-2, 471 NET_PROTO_CONF_DEFAULT=-3 472 473 /* And device ifindices ... */ 474}; 475 476enum 477{ 478 NET_IPV4_CONF_FORWARDING=1, 479 NET_IPV4_CONF_MC_FORWARDING=2, 480 NET_IPV4_CONF_PROXY_ARP=3, 481 NET_IPV4_CONF_ACCEPT_REDIRECTS=4, 482 NET_IPV4_CONF_SECURE_REDIRECTS=5, 483 NET_IPV4_CONF_SEND_REDIRECTS=6, 484 NET_IPV4_CONF_SHARED_MEDIA=7, 485 NET_IPV4_CONF_RP_FILTER=8, 486 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, 487 NET_IPV4_CONF_BOOTP_RELAY=10, 488 NET_IPV4_CONF_LOG_MARTIANS=11, 489 NET_IPV4_CONF_TAG=12, 490 NET_IPV4_CONF_ARPFILTER=13, 491 NET_IPV4_CONF_MEDIUM_ID=14, 492 NET_IPV4_CONF_NOXFRM=15, 493 NET_IPV4_CONF_NOPOLICY=16, 494 NET_IPV4_CONF_FORCE_IGMP_VERSION=17, 495 NET_IPV4_CONF_ARP_ANNOUNCE=18, 496 NET_IPV4_CONF_ARP_IGNORE=19, 497 NET_IPV4_CONF_PROMOTE_SECONDARIES=20, 498 NET_IPV4_CONF_ARP_ACCEPT=21, 499 __NET_IPV4_CONF_MAX 500}; 501 502/* /proc/sys/net/ipv4/netfilter */ 503enum 504{ 505 NET_IPV4_NF_CONNTRACK_MAX=1, 506 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 507 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 508 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 509 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 510 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 511 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 512 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 513 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 514 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, 515 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 516 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, 517 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, 518 NET_IPV4_NF_CONNTRACK_BUCKETS=14, 519 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15, 520 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 521 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17, 522 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18, 523 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19, 524 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 525 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 526 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 527 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 528 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 529 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 530 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 531 NET_IPV4_NF_CONNTRACK_COUNT=27, 532 NET_IPV4_NF_CONNTRACK_CHECKSUM=28, 533}; 534 535/* /proc/sys/net/ipv6 */ 536enum { 537 NET_IPV6_CONF=16, 538 NET_IPV6_NEIGH=17, 539 NET_IPV6_ROUTE=18, 540 NET_IPV6_ICMP=19, 541 NET_IPV6_BINDV6ONLY=20, 542 NET_IPV6_IP6FRAG_HIGH_THRESH=21, 543 NET_IPV6_IP6FRAG_LOW_THRESH=22, 544 NET_IPV6_IP6FRAG_TIME=23, 545 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24, 546 NET_IPV6_MLD_MAX_MSF=25, 547}; 548 549enum { 550 NET_IPV6_ROUTE_FLUSH=1, 551 NET_IPV6_ROUTE_GC_THRESH=2, 552 NET_IPV6_ROUTE_MAX_SIZE=3, 553 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, 554 NET_IPV6_ROUTE_GC_TIMEOUT=5, 555 NET_IPV6_ROUTE_GC_INTERVAL=6, 556 NET_IPV6_ROUTE_GC_ELASTICITY=7, 557 NET_IPV6_ROUTE_MTU_EXPIRES=8, 558 NET_IPV6_ROUTE_MIN_ADVMSS=9, 559 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10 560}; 561 562enum { 563 NET_IPV6_FORWARDING=1, 564 NET_IPV6_HOP_LIMIT=2, 565 NET_IPV6_MTU=3, 566 NET_IPV6_ACCEPT_RA=4, 567 NET_IPV6_ACCEPT_REDIRECTS=5, 568 NET_IPV6_AUTOCONF=6, 569 NET_IPV6_DAD_TRANSMITS=7, 570 NET_IPV6_RTR_SOLICITS=8, 571 NET_IPV6_RTR_SOLICIT_INTERVAL=9, 572 NET_IPV6_RTR_SOLICIT_DELAY=10, 573 NET_IPV6_USE_TEMPADDR=11, 574 NET_IPV6_TEMP_VALID_LFT=12, 575 NET_IPV6_TEMP_PREFERED_LFT=13, 576 NET_IPV6_REGEN_MAX_RETRY=14, 577 NET_IPV6_MAX_DESYNC_FACTOR=15, 578 NET_IPV6_MAX_ADDRESSES=16, 579 NET_IPV6_FORCE_MLD_VERSION=17, 580 NET_IPV6_ACCEPT_RA_DEFRTR=18, 581 NET_IPV6_ACCEPT_RA_PINFO=19, 582 NET_IPV6_ACCEPT_RA_RTR_PREF=20, 583 NET_IPV6_RTR_PROBE_INTERVAL=21, 584 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22, 585 NET_IPV6_PROXY_NDP=23, 586 NET_IPV6_ACCEPT_SOURCE_ROUTE=25, 587 NET_IPV6_MC_FORWARDING=26, 588 __NET_IPV6_MAX 589}; 590 591/* /proc/sys/net/ipv6/icmp */ 592enum { 593 NET_IPV6_ICMP_RATELIMIT=1 594}; 595 596/* /proc/sys/net/<protocol>/neigh/<dev> */ 597enum { 598 NET_NEIGH_MCAST_SOLICIT=1, 599 NET_NEIGH_UCAST_SOLICIT=2, 600 NET_NEIGH_APP_SOLICIT=3, 601 NET_NEIGH_RETRANS_TIME=4, 602 NET_NEIGH_REACHABLE_TIME=5, 603 NET_NEIGH_DELAY_PROBE_TIME=6, 604 NET_NEIGH_GC_STALE_TIME=7, 605 NET_NEIGH_UNRES_QLEN=8, 606 NET_NEIGH_PROXY_QLEN=9, 607 NET_NEIGH_ANYCAST_DELAY=10, 608 NET_NEIGH_PROXY_DELAY=11, 609 NET_NEIGH_LOCKTIME=12, 610 NET_NEIGH_GC_INTERVAL=13, 611 NET_NEIGH_GC_THRESH1=14, 612 NET_NEIGH_GC_THRESH2=15, 613 NET_NEIGH_GC_THRESH3=16, 614 NET_NEIGH_RETRANS_TIME_MS=17, 615 NET_NEIGH_REACHABLE_TIME_MS=18, 616 __NET_NEIGH_MAX 617}; 618 619/* /proc/sys/net/dccp */ 620enum { 621 NET_DCCP_DEFAULT=1, 622}; 623 624/* /proc/sys/net/ipx */ 625enum { 626 NET_IPX_PPROP_BROADCASTING=1, 627 NET_IPX_FORWARDING=2 628}; 629 630/* /proc/sys/net/llc */ 631enum { 632 NET_LLC2=1, 633 NET_LLC_STATION=2, 634}; 635 636/* /proc/sys/net/llc/llc2 */ 637enum { 638 NET_LLC2_TIMEOUT=1, 639}; 640 641/* /proc/sys/net/llc/station */ 642enum { 643 NET_LLC_STATION_ACK_TIMEOUT=1, 644}; 645 646/* /proc/sys/net/llc/llc2/timeout */ 647enum { 648 NET_LLC2_ACK_TIMEOUT=1, 649 NET_LLC2_P_TIMEOUT=2, 650 NET_LLC2_REJ_TIMEOUT=3, 651 NET_LLC2_BUSY_TIMEOUT=4, 652}; 653 654/* /proc/sys/net/appletalk */ 655enum { 656 NET_ATALK_AARP_EXPIRY_TIME=1, 657 NET_ATALK_AARP_TICK_TIME=2, 658 NET_ATALK_AARP_RETRANSMIT_LIMIT=3, 659 NET_ATALK_AARP_RESOLVE_TIME=4 660}; 661 662 663/* /proc/sys/net/netrom */ 664enum { 665 NET_NETROM_DEFAULT_PATH_QUALITY=1, 666 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, 667 NET_NETROM_NETWORK_TTL_INITIALISER=3, 668 NET_NETROM_TRANSPORT_TIMEOUT=4, 669 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, 670 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, 671 NET_NETROM_TRANSPORT_BUSY_DELAY=7, 672 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, 673 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, 674 NET_NETROM_ROUTING_CONTROL=10, 675 NET_NETROM_LINK_FAILS_COUNT=11, 676 NET_NETROM_RESET=12 677}; 678 679/* /proc/sys/net/ax25 */ 680enum { 681 NET_AX25_IP_DEFAULT_MODE=1, 682 NET_AX25_DEFAULT_MODE=2, 683 NET_AX25_BACKOFF_TYPE=3, 684 NET_AX25_CONNECT_MODE=4, 685 NET_AX25_STANDARD_WINDOW=5, 686 NET_AX25_EXTENDED_WINDOW=6, 687 NET_AX25_T1_TIMEOUT=7, 688 NET_AX25_T2_TIMEOUT=8, 689 NET_AX25_T3_TIMEOUT=9, 690 NET_AX25_IDLE_TIMEOUT=10, 691 NET_AX25_N2=11, 692 NET_AX25_PACLEN=12, 693 NET_AX25_PROTOCOL=13, 694 NET_AX25_DAMA_SLAVE_TIMEOUT=14 695}; 696 697/* /proc/sys/net/rose */ 698enum { 699 NET_ROSE_RESTART_REQUEST_TIMEOUT=1, 700 NET_ROSE_CALL_REQUEST_TIMEOUT=2, 701 NET_ROSE_RESET_REQUEST_TIMEOUT=3, 702 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, 703 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, 704 NET_ROSE_ROUTING_CONTROL=6, 705 NET_ROSE_LINK_FAIL_TIMEOUT=7, 706 NET_ROSE_MAX_VCS=8, 707 NET_ROSE_WINDOW_SIZE=9, 708 NET_ROSE_NO_ACTIVITY_TIMEOUT=10 709}; 710 711/* /proc/sys/net/x25 */ 712enum { 713 NET_X25_RESTART_REQUEST_TIMEOUT=1, 714 NET_X25_CALL_REQUEST_TIMEOUT=2, 715 NET_X25_RESET_REQUEST_TIMEOUT=3, 716 NET_X25_CLEAR_REQUEST_TIMEOUT=4, 717 NET_X25_ACK_HOLD_BACK_TIMEOUT=5, 718 NET_X25_FORWARD=6 719}; 720 721/* /proc/sys/net/token-ring */ 722enum 723{ 724 NET_TR_RIF_TIMEOUT=1 725}; 726 727/* /proc/sys/net/decnet/ */ 728enum { 729 NET_DECNET_NODE_TYPE = 1, 730 NET_DECNET_NODE_ADDRESS = 2, 731 NET_DECNET_NODE_NAME = 3, 732 NET_DECNET_DEFAULT_DEVICE = 4, 733 NET_DECNET_TIME_WAIT = 5, 734 NET_DECNET_DN_COUNT = 6, 735 NET_DECNET_DI_COUNT = 7, 736 NET_DECNET_DR_COUNT = 8, 737 NET_DECNET_DST_GC_INTERVAL = 9, 738 NET_DECNET_CONF = 10, 739 NET_DECNET_NO_FC_MAX_CWND = 11, 740 NET_DECNET_MEM = 12, 741 NET_DECNET_RMEM = 13, 742 NET_DECNET_WMEM = 14, 743 NET_DECNET_DEBUG_LEVEL = 255 744}; 745 746/* /proc/sys/net/decnet/conf/<dev> */ 747enum { 748 NET_DECNET_CONF_LOOPBACK = -2, 749 NET_DECNET_CONF_DDCMP = -3, 750 NET_DECNET_CONF_PPP = -4, 751 NET_DECNET_CONF_X25 = -5, 752 NET_DECNET_CONF_GRE = -6, 753 NET_DECNET_CONF_ETHER = -7 754 755 /* ... and ifindex of devices */ 756}; 757 758/* /proc/sys/net/decnet/conf/<dev>/ */ 759enum { 760 NET_DECNET_CONF_DEV_PRIORITY = 1, 761 NET_DECNET_CONF_DEV_T1 = 2, 762 NET_DECNET_CONF_DEV_T2 = 3, 763 NET_DECNET_CONF_DEV_T3 = 4, 764 NET_DECNET_CONF_DEV_FORWARDING = 5, 765 NET_DECNET_CONF_DEV_BLKSIZE = 6, 766 NET_DECNET_CONF_DEV_STATE = 7 767}; 768 769/* /proc/sys/net/sctp */ 770enum { 771 NET_SCTP_RTO_INITIAL = 1, 772 NET_SCTP_RTO_MIN = 2, 773 NET_SCTP_RTO_MAX = 3, 774 NET_SCTP_RTO_ALPHA = 4, 775 NET_SCTP_RTO_BETA = 5, 776 NET_SCTP_VALID_COOKIE_LIFE = 6, 777 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, 778 NET_SCTP_PATH_MAX_RETRANS = 8, 779 NET_SCTP_MAX_INIT_RETRANSMITS = 9, 780 NET_SCTP_HB_INTERVAL = 10, 781 NET_SCTP_PRESERVE_ENABLE = 11, 782 NET_SCTP_MAX_BURST = 12, 783 NET_SCTP_ADDIP_ENABLE = 13, 784 NET_SCTP_PRSCTP_ENABLE = 14, 785 NET_SCTP_SNDBUF_POLICY = 15, 786 NET_SCTP_SACK_TIMEOUT = 16, 787 NET_SCTP_RCVBUF_POLICY = 17, 788}; 789 790/* /proc/sys/net/bridge */ 791enum { 792 NET_BRIDGE_NF_CALL_ARPTABLES = 1, 793 NET_BRIDGE_NF_CALL_IPTABLES = 2, 794 NET_BRIDGE_NF_CALL_IP6TABLES = 3, 795 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, 796 NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5, 797}; 798 799/* CTL_FS names: */ 800enum 801{ 802 FS_NRINODE=1, /* int:current number of allocated inodes */ 803 FS_STATINODE=2, 804 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ 805 FS_NRDQUOT=4, /* int:current number of allocated dquots */ 806 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */ 807 FS_NRFILE=6, /* int:current number of allocated filedescriptors */ 808 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ 809 FS_DENTRY=8, 810 FS_NRSUPER=9, /* int:current number of allocated super_blocks */ 811 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ 812 FS_OVERFLOWUID=11, /* int: overflow UID */ 813 FS_OVERFLOWGID=12, /* int: overflow GID */ 814 FS_LEASES=13, /* int: leases enabled */ 815 FS_DIR_NOTIFY=14, /* int: directory notification enabled */ 816 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ 817 FS_DQSTATS=16, /* disc quota usage statistics and control */ 818 FS_XFS=17, /* struct: control xfs parameters */ 819 FS_AIO_NR=18, /* current system-wide number of aio requests */ 820 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */ 821 FS_INOTIFY=20, /* inotify submenu */ 822 FS_OCFS2=988, /* ocfs2 */ 823}; 824 825/* /proc/sys/fs/quota/ */ 826enum { 827 FS_DQ_LOOKUPS = 1, 828 FS_DQ_DROPS = 2, 829 FS_DQ_READS = 3, 830 FS_DQ_WRITES = 4, 831 FS_DQ_CACHE_HITS = 5, 832 FS_DQ_ALLOCATED = 6, 833 FS_DQ_FREE = 7, 834 FS_DQ_SYNCS = 8, 835 FS_DQ_WARNINGS = 9, 836}; 837 838/* CTL_DEBUG names: */ 839 840/* CTL_DEV names: */ 841enum { 842 DEV_CDROM=1, 843 DEV_HWMON=2, 844 DEV_PARPORT=3, 845 DEV_RAID=4, 846 DEV_MAC_HID=5, 847 DEV_SCSI=6, 848 DEV_IPMI=7, 849}; 850 851/* /proc/sys/dev/cdrom */ 852enum { 853 DEV_CDROM_INFO=1, 854 DEV_CDROM_AUTOCLOSE=2, 855 DEV_CDROM_AUTOEJECT=3, 856 DEV_CDROM_DEBUG=4, 857 DEV_CDROM_LOCK=5, 858 DEV_CDROM_CHECK_MEDIA=6 859}; 860 861/* /proc/sys/dev/parport */ 862enum { 863 DEV_PARPORT_DEFAULT=-3 864}; 865 866/* /proc/sys/dev/raid */ 867enum { 868 DEV_RAID_SPEED_LIMIT_MIN=1, 869 DEV_RAID_SPEED_LIMIT_MAX=2 870}; 871 872/* /proc/sys/dev/parport/default */ 873enum { 874 DEV_PARPORT_DEFAULT_TIMESLICE=1, 875 DEV_PARPORT_DEFAULT_SPINTIME=2 876}; 877 878/* /proc/sys/dev/parport/parport n */ 879enum { 880 DEV_PARPORT_SPINTIME=1, 881 DEV_PARPORT_BASE_ADDR=2, 882 DEV_PARPORT_IRQ=3, 883 DEV_PARPORT_DMA=4, 884 DEV_PARPORT_MODES=5, 885 DEV_PARPORT_DEVICES=6, 886 DEV_PARPORT_AUTOPROBE=16 887}; 888 889/* /proc/sys/dev/parport/parport n/devices/ */ 890enum { 891 DEV_PARPORT_DEVICES_ACTIVE=-3, 892}; 893 894/* /proc/sys/dev/parport/parport n/devices/device n */ 895enum { 896 DEV_PARPORT_DEVICE_TIMESLICE=1, 897}; 898 899/* /proc/sys/dev/mac_hid */ 900enum { 901 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, 902 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, 903 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, 904 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, 905 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, 906 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 907}; 908 909/* /proc/sys/dev/scsi */ 910enum { 911 DEV_SCSI_LOGGING_LEVEL=1, 912}; 913 914/* /proc/sys/dev/ipmi */ 915enum { 916 DEV_IPMI_POWEROFF_POWERCYCLE=1, 917}; 918 919/* /proc/sys/abi */ 920enum 921{ 922 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ 923 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ 924 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ 925 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ 926 ABI_TRACE=5, /* tracing flags */ 927 ABI_FAKE_UTSNAME=6, /* fake target utsname information */ 928}; 929 930#ifdef __KERNEL__ 931#include <linux/list.h> 932 933/* For the /proc/sys support */ 934struct ctl_table; 935extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev); 936extern void sysctl_head_finish(struct ctl_table_header *prev); 937extern int sysctl_perm(struct ctl_table *table, int op); 938 939typedef struct ctl_table ctl_table; 940 941typedef int ctl_handler (ctl_table *table, int __user *name, int nlen, 942 void __user *oldval, size_t __user *oldlenp, 943 void __user *newval, size_t newlen); 944 945typedef int proc_handler (ctl_table *ctl, int write, struct file * filp, 946 void __user *buffer, size_t *lenp, loff_t *ppos); 947 948extern int proc_dostring(ctl_table *, int, struct file *, 949 void __user *, size_t *, loff_t *); 950extern int proc_dointvec(ctl_table *, int, struct file *, 951 void __user *, size_t *, loff_t *); 952extern int proc_dointvec_bset(ctl_table *, int, struct file *, 953 void __user *, size_t *, loff_t *); 954extern int proc_dointvec_minmax(ctl_table *, int, struct file *, 955 void __user *, size_t *, loff_t *); 956extern int proc_dointvec_jiffies(ctl_table *, int, struct file *, 957 void __user *, size_t *, loff_t *); 958extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *, 959 void __user *, size_t *, loff_t *); 960extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *, 961 void __user *, size_t *, loff_t *); 962extern int proc_doulongvec_minmax(ctl_table *, int, struct file *, 963 void __user *, size_t *, loff_t *); 964extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int, 965 struct file *, void __user *, size_t *, loff_t *); 966 967extern int do_sysctl (int __user *name, int nlen, 968 void __user *oldval, size_t __user *oldlenp, 969 void __user *newval, size_t newlen); 970 971extern int do_sysctl_strategy (ctl_table *table, 972 int __user *name, int nlen, 973 void __user *oldval, size_t __user *oldlenp, 974 void __user *newval, size_t newlen); 975 976extern ctl_handler sysctl_string; 977extern ctl_handler sysctl_intvec; 978extern ctl_handler sysctl_jiffies; 979extern ctl_handler sysctl_ms_jiffies; 980 981 982/* 983 * Register a set of sysctl names by calling register_sysctl_table 984 * with an initialised array of ctl_table's. An entry with zero 985 * ctl_name and NULL procname terminates the table. table->de will be 986 * set up by the registration and need not be initialised in advance. 987 * 988 * sysctl names can be mirrored automatically under /proc/sys. The 989 * procname supplied controls /proc naming. 990 * 991 * The table's mode will be honoured both for sys_sysctl(2) and 992 * proc-fs access. 993 * 994 * Leaf nodes in the sysctl tree will be represented by a single file 995 * under /proc; non-leaf nodes will be represented by directories. A 996 * null procname disables /proc mirroring at this node. 997 * 998 * sysctl entries with a zero ctl_name will not be available through 999 * the binary sysctl interface. 1000 * 1001 * sysctl(2) can automatically manage read and write requests through 1002 * the sysctl table. The data and maxlen fields of the ctl_table 1003 * struct enable minimal validation of the values being written to be 1004 * performed, and the mode field allows minimal authentication. 1005 * 1006 * More sophisticated management can be enabled by the provision of a 1007 * strategy routine with the table entry. This will be called before 1008 * any automatic read or write of the data is performed. 1009 * 1010 * The strategy routine may return: 1011 * <0: Error occurred (error is passed to user process) 1012 * 0: OK - proceed with automatic read or write. 1013 * >0: OK - read or write has been done by the strategy routine, so 1014 * return immediately. 1015 * 1016 * There must be a proc_handler routine for any terminal nodes 1017 * mirrored under /proc/sys (non-terminals are handled by a built-in 1018 * directory handler). Several default handlers are available to 1019 * cover common cases. 1020 */ 1021 1022/* A sysctl table is an array of struct ctl_table: */ 1023struct ctl_table 1024{ 1025 int ctl_name; /* Binary ID */ 1026 const char *procname; /* Text ID for /proc/sys, or zero */ 1027 void *data; 1028 int maxlen; 1029 mode_t mode; 1030 ctl_table *child; 1031 ctl_table *parent; /* Automatically set */ 1032 proc_handler *proc_handler; /* Callback for text formatting */ 1033 ctl_handler *strategy; /* Callback function for all r/w */ 1034 void *extra1; 1035 void *extra2; 1036}; 1037 1038/* struct ctl_table_header is used to maintain dynamic lists of 1039 ctl_table trees. */ 1040struct ctl_table_header 1041{ 1042 ctl_table *ctl_table; 1043 struct list_head ctl_entry; 1044 int used; 1045 struct completion *unregistering; 1046}; 1047 1048struct ctl_table_header * register_sysctl_table(ctl_table * table); 1049 1050void unregister_sysctl_table(struct ctl_table_header * table); 1051 1052#else /* __KERNEL__ */ 1053 1054#endif /* __KERNEL__ */ 1055 1056#endif /* _LINUX_SYSCTL_H */ 1057