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 26 struct 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 33 struct __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 53 enum 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: */ 68 enum 69 { 70 CTL_BUS_ISA=1 /* ISA */ 71 }; 72 73 /* /proc/sys/fs/inotify/ */ 74 enum 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: */ 82 enum 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: */ 153 enum 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: */ 187 enum 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 NET_LLC=18, 207 }; 208 209 /* /proc/sys/kernel/random */ 210 enum 211 { 212 RANDOM_POOLSIZE=1, 213 RANDOM_ENTROPY_COUNT=2, 214 RANDOM_READ_THRESH=3, 215 RANDOM_WRITE_THRESH=4, 216 RANDOM_BOOT_ID=5, 217 RANDOM_UUID=6 218 }; 219 220 /* /proc/sys/kernel/pty */ 221 enum 222 { 223 PTY_MAX=1, 224 PTY_NR=2 225 }; 226 227 /* /proc/sys/bus/isa */ 228 enum 229 { 230 BUS_ISA_MEM_BASE=1, 231 BUS_ISA_PORT_BASE=2, 232 BUS_ISA_PORT_SHIFT=3 233 }; 234 235 /* /proc/sys/net/core */ 236 enum 237 { 238 NET_CORE_WMEM_MAX=1, 239 NET_CORE_RMEM_MAX=2, 240 NET_CORE_WMEM_DEFAULT=3, 241 NET_CORE_RMEM_DEFAULT=4, 242 /* was NET_CORE_DESTROY_DELAY */ 243 NET_CORE_MAX_BACKLOG=6, 244 NET_CORE_FASTROUTE=7, 245 NET_CORE_MSG_COST=8, 246 NET_CORE_MSG_BURST=9, 247 NET_CORE_OPTMEM_MAX=10, 248 NET_CORE_HOT_LIST_LENGTH=11, 249 NET_CORE_DIVERT_VERSION=12, 250 NET_CORE_NO_CONG_THRESH=13, 251 NET_CORE_NO_CONG=14, 252 NET_CORE_LO_CONG=15, 253 NET_CORE_MOD_CONG=16, 254 NET_CORE_DEV_WEIGHT=17, 255 NET_CORE_SOMAXCONN=18, 256 NET_CORE_BUDGET=19, 257 }; 258 259 /* /proc/sys/net/ethernet */ 260 261 /* /proc/sys/net/802 */ 262 263 /* /proc/sys/net/unix */ 264 265 enum 266 { 267 NET_UNIX_DESTROY_DELAY=1, 268 NET_UNIX_DELETE_DELAY=2, 269 NET_UNIX_MAX_DGRAM_QLEN=3, 270 }; 271 272 /* /proc/sys/net/ipv4 */ 273 enum 274 { 275 /* v2.0 compatibile variables */ 276 NET_IPV4_FORWARD=8, 277 NET_IPV4_DYNADDR=9, 278 279 NET_IPV4_CONF=16, 280 NET_IPV4_NEIGH=17, 281 NET_IPV4_ROUTE=18, 282 NET_IPV4_FIB_HASH=19, 283 NET_IPV4_NETFILTER=20, 284 285 NET_IPV4_TCP_TIMESTAMPS=33, 286 NET_IPV4_TCP_WINDOW_SCALING=34, 287 NET_IPV4_TCP_SACK=35, 288 NET_IPV4_TCP_RETRANS_COLLAPSE=36, 289 NET_IPV4_DEFAULT_TTL=37, 290 NET_IPV4_AUTOCONFIG=38, 291 NET_IPV4_NO_PMTU_DISC=39, 292 NET_IPV4_TCP_SYN_RETRIES=40, 293 NET_IPV4_IPFRAG_HIGH_THRESH=41, 294 NET_IPV4_IPFRAG_LOW_THRESH=42, 295 NET_IPV4_IPFRAG_TIME=43, 296 NET_IPV4_TCP_MAX_KA_PROBES=44, 297 NET_IPV4_TCP_KEEPALIVE_TIME=45, 298 NET_IPV4_TCP_KEEPALIVE_PROBES=46, 299 NET_IPV4_TCP_RETRIES1=47, 300 NET_IPV4_TCP_RETRIES2=48, 301 NET_IPV4_TCP_FIN_TIMEOUT=49, 302 NET_IPV4_IP_MASQ_DEBUG=50, 303 NET_TCP_SYNCOOKIES=51, 304 NET_TCP_STDURG=52, 305 NET_TCP_RFC1337=53, 306 NET_TCP_SYN_TAILDROP=54, 307 NET_TCP_MAX_SYN_BACKLOG=55, 308 NET_IPV4_LOCAL_PORT_RANGE=56, 309 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, 310 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, 311 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, 312 NET_IPV4_ICMP_DESTUNREACH_RATE=60, 313 NET_IPV4_ICMP_TIMEEXCEED_RATE=61, 314 NET_IPV4_ICMP_PARAMPROB_RATE=62, 315 NET_IPV4_ICMP_ECHOREPLY_RATE=63, 316 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, 317 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, 318 NET_TCP_TW_RECYCLE=66, 319 NET_IPV4_ALWAYS_DEFRAG=67, 320 NET_IPV4_TCP_KEEPALIVE_INTVL=68, 321 NET_IPV4_INET_PEER_THRESHOLD=69, 322 NET_IPV4_INET_PEER_MINTTL=70, 323 NET_IPV4_INET_PEER_MAXTTL=71, 324 NET_IPV4_INET_PEER_GC_MINTIME=72, 325 NET_IPV4_INET_PEER_GC_MAXTIME=73, 326 NET_TCP_ORPHAN_RETRIES=74, 327 NET_TCP_ABORT_ON_OVERFLOW=75, 328 NET_TCP_SYNACK_RETRIES=76, 329 NET_TCP_MAX_ORPHANS=77, 330 NET_TCP_MAX_TW_BUCKETS=78, 331 NET_TCP_FACK=79, 332 NET_TCP_REORDERING=80, 333 NET_TCP_ECN=81, 334 NET_TCP_DSACK=82, 335 NET_TCP_MEM=83, 336 NET_TCP_WMEM=84, 337 NET_TCP_RMEM=85, 338 NET_TCP_APP_WIN=86, 339 NET_TCP_ADV_WIN_SCALE=87, 340 NET_IPV4_NONLOCAL_BIND=88, 341 NET_IPV4_ICMP_RATELIMIT=89, 342 NET_IPV4_ICMP_RATEMASK=90, 343 NET_TCP_TW_REUSE=91, 344 NET_TCP_FRTO=92, 345 NET_TCP_LOW_LATENCY=93, 346 NET_IPV4_IPFRAG_SECRET_INTERVAL=94, 347 NET_IPV4_IGMP_MAX_MSF=96, 348 NET_TCP_NO_METRICS_SAVE=97, 349 NET_TCP_DEFAULT_WIN_SCALE=105, 350 NET_TCP_MODERATE_RCVBUF=106, 351 NET_TCP_TSO_WIN_DIVISOR=107, 352 NET_TCP_BIC_BETA=108, 353 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109, 354 NET_TCP_CONG_CONTROL=110, 355 }; 356 357 enum { 358 NET_IPV4_ROUTE_FLUSH=1, 359 NET_IPV4_ROUTE_MIN_DELAY=2, 360 NET_IPV4_ROUTE_MAX_DELAY=3, 361 NET_IPV4_ROUTE_GC_THRESH=4, 362 NET_IPV4_ROUTE_MAX_SIZE=5, 363 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, 364 NET_IPV4_ROUTE_GC_TIMEOUT=7, 365 NET_IPV4_ROUTE_GC_INTERVAL=8, 366 NET_IPV4_ROUTE_REDIRECT_LOAD=9, 367 NET_IPV4_ROUTE_REDIRECT_NUMBER=10, 368 NET_IPV4_ROUTE_REDIRECT_SILENCE=11, 369 NET_IPV4_ROUTE_ERROR_COST=12, 370 NET_IPV4_ROUTE_ERROR_BURST=13, 371 NET_IPV4_ROUTE_GC_ELASTICITY=14, 372 NET_IPV4_ROUTE_MTU_EXPIRES=15, 373 NET_IPV4_ROUTE_MIN_PMTU=16, 374 NET_IPV4_ROUTE_MIN_ADVMSS=17, 375 NET_IPV4_ROUTE_SECRET_INTERVAL=18, 376 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19, 377 }; 378 379 enum 380 { 381 NET_PROTO_CONF_ALL=-2, 382 NET_PROTO_CONF_DEFAULT=-3 383 384 /* And device ifindices ... */ 385 }; 386 387 enum 388 { 389 NET_IPV4_CONF_FORWARDING=1, 390 NET_IPV4_CONF_MC_FORWARDING=2, 391 NET_IPV4_CONF_PROXY_ARP=3, 392 NET_IPV4_CONF_ACCEPT_REDIRECTS=4, 393 NET_IPV4_CONF_SECURE_REDIRECTS=5, 394 NET_IPV4_CONF_SEND_REDIRECTS=6, 395 NET_IPV4_CONF_SHARED_MEDIA=7, 396 NET_IPV4_CONF_RP_FILTER=8, 397 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, 398 NET_IPV4_CONF_BOOTP_RELAY=10, 399 NET_IPV4_CONF_LOG_MARTIANS=11, 400 NET_IPV4_CONF_TAG=12, 401 NET_IPV4_CONF_ARPFILTER=13, 402 NET_IPV4_CONF_MEDIUM_ID=14, 403 NET_IPV4_CONF_NOXFRM=15, 404 NET_IPV4_CONF_NOPOLICY=16, 405 NET_IPV4_CONF_FORCE_IGMP_VERSION=17, 406 NET_IPV4_CONF_ARP_ANNOUNCE=18, 407 NET_IPV4_CONF_ARP_IGNORE=19, 408 NET_IPV4_CONF_PROMOTE_SECONDARIES=20, 409 __NET_IPV4_CONF_MAX 410 }; 411 412 /* /proc/sys/net/ipv4/netfilter */ 413 enum 414 { 415 NET_IPV4_NF_CONNTRACK_MAX=1, 416 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 417 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 418 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 419 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 420 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 421 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 422 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 423 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 424 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, 425 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 426 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, 427 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, 428 NET_IPV4_NF_CONNTRACK_BUCKETS=14, 429 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15, 430 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 431 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17, 432 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18, 433 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19, 434 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 435 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 436 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 437 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 438 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 439 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 440 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 441 NET_IPV4_NF_CONNTRACK_COUNT=27, 442 }; 443 444 /* /proc/sys/net/ipv6 */ 445 enum { 446 NET_IPV6_CONF=16, 447 NET_IPV6_NEIGH=17, 448 NET_IPV6_ROUTE=18, 449 NET_IPV6_ICMP=19, 450 NET_IPV6_BINDV6ONLY=20, 451 NET_IPV6_IP6FRAG_HIGH_THRESH=21, 452 NET_IPV6_IP6FRAG_LOW_THRESH=22, 453 NET_IPV6_IP6FRAG_TIME=23, 454 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24, 455 NET_IPV6_MLD_MAX_MSF=25, 456 }; 457 458 enum { 459 NET_IPV6_ROUTE_FLUSH=1, 460 NET_IPV6_ROUTE_GC_THRESH=2, 461 NET_IPV6_ROUTE_MAX_SIZE=3, 462 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, 463 NET_IPV6_ROUTE_GC_TIMEOUT=5, 464 NET_IPV6_ROUTE_GC_INTERVAL=6, 465 NET_IPV6_ROUTE_GC_ELASTICITY=7, 466 NET_IPV6_ROUTE_MTU_EXPIRES=8, 467 NET_IPV6_ROUTE_MIN_ADVMSS=9, 468 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10 469 }; 470 471 enum { 472 NET_IPV6_FORWARDING=1, 473 NET_IPV6_HOP_LIMIT=2, 474 NET_IPV6_MTU=3, 475 NET_IPV6_ACCEPT_RA=4, 476 NET_IPV6_ACCEPT_REDIRECTS=5, 477 NET_IPV6_AUTOCONF=6, 478 NET_IPV6_DAD_TRANSMITS=7, 479 NET_IPV6_RTR_SOLICITS=8, 480 NET_IPV6_RTR_SOLICIT_INTERVAL=9, 481 NET_IPV6_RTR_SOLICIT_DELAY=10, 482 NET_IPV6_USE_TEMPADDR=11, 483 NET_IPV6_TEMP_VALID_LFT=12, 484 NET_IPV6_TEMP_PREFERED_LFT=13, 485 NET_IPV6_REGEN_MAX_RETRY=14, 486 NET_IPV6_MAX_DESYNC_FACTOR=15, 487 NET_IPV6_MAX_ADDRESSES=16, 488 NET_IPV6_FORCE_MLD_VERSION=17, 489 __NET_IPV6_MAX 490 }; 491 492 /* /proc/sys/net/ipv6/icmp */ 493 enum { 494 NET_IPV6_ICMP_RATELIMIT=1 495 }; 496 497 /* /proc/sys/net/<protocol>/neigh/<dev> */ 498 enum { 499 NET_NEIGH_MCAST_SOLICIT=1, 500 NET_NEIGH_UCAST_SOLICIT=2, 501 NET_NEIGH_APP_SOLICIT=3, 502 NET_NEIGH_RETRANS_TIME=4, 503 NET_NEIGH_REACHABLE_TIME=5, 504 NET_NEIGH_DELAY_PROBE_TIME=6, 505 NET_NEIGH_GC_STALE_TIME=7, 506 NET_NEIGH_UNRES_QLEN=8, 507 NET_NEIGH_PROXY_QLEN=9, 508 NET_NEIGH_ANYCAST_DELAY=10, 509 NET_NEIGH_PROXY_DELAY=11, 510 NET_NEIGH_LOCKTIME=12, 511 NET_NEIGH_GC_INTERVAL=13, 512 NET_NEIGH_GC_THRESH1=14, 513 NET_NEIGH_GC_THRESH2=15, 514 NET_NEIGH_GC_THRESH3=16, 515 NET_NEIGH_RETRANS_TIME_MS=17, 516 NET_NEIGH_REACHABLE_TIME_MS=18, 517 __NET_NEIGH_MAX 518 }; 519 520 /* /proc/sys/net/ipx */ 521 enum { 522 NET_IPX_PPROP_BROADCASTING=1, 523 NET_IPX_FORWARDING=2 524 }; 525 526 /* /proc/sys/net/llc */ 527 enum { 528 NET_LLC2=1, 529 NET_LLC_STATION=2, 530 }; 531 532 /* /proc/sys/net/llc/llc2 */ 533 enum { 534 NET_LLC2_TIMEOUT=1, 535 }; 536 537 /* /proc/sys/net/llc/station */ 538 enum { 539 NET_LLC_STATION_ACK_TIMEOUT=1, 540 }; 541 542 /* /proc/sys/net/llc/llc2/timeout */ 543 enum { 544 NET_LLC2_ACK_TIMEOUT=1, 545 NET_LLC2_P_TIMEOUT=2, 546 NET_LLC2_REJ_TIMEOUT=3, 547 NET_LLC2_BUSY_TIMEOUT=4, 548 }; 549 550 /* /proc/sys/net/appletalk */ 551 enum { 552 NET_ATALK_AARP_EXPIRY_TIME=1, 553 NET_ATALK_AARP_TICK_TIME=2, 554 NET_ATALK_AARP_RETRANSMIT_LIMIT=3, 555 NET_ATALK_AARP_RESOLVE_TIME=4 556 }; 557 558 559 /* /proc/sys/net/netrom */ 560 enum { 561 NET_NETROM_DEFAULT_PATH_QUALITY=1, 562 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, 563 NET_NETROM_NETWORK_TTL_INITIALISER=3, 564 NET_NETROM_TRANSPORT_TIMEOUT=4, 565 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, 566 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, 567 NET_NETROM_TRANSPORT_BUSY_DELAY=7, 568 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, 569 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, 570 NET_NETROM_ROUTING_CONTROL=10, 571 NET_NETROM_LINK_FAILS_COUNT=11, 572 NET_NETROM_RESET=12 573 }; 574 575 /* /proc/sys/net/ax25 */ 576 enum { 577 NET_AX25_IP_DEFAULT_MODE=1, 578 NET_AX25_DEFAULT_MODE=2, 579 NET_AX25_BACKOFF_TYPE=3, 580 NET_AX25_CONNECT_MODE=4, 581 NET_AX25_STANDARD_WINDOW=5, 582 NET_AX25_EXTENDED_WINDOW=6, 583 NET_AX25_T1_TIMEOUT=7, 584 NET_AX25_T2_TIMEOUT=8, 585 NET_AX25_T3_TIMEOUT=9, 586 NET_AX25_IDLE_TIMEOUT=10, 587 NET_AX25_N2=11, 588 NET_AX25_PACLEN=12, 589 NET_AX25_PROTOCOL=13, 590 NET_AX25_DAMA_SLAVE_TIMEOUT=14 591 }; 592 593 /* /proc/sys/net/rose */ 594 enum { 595 NET_ROSE_RESTART_REQUEST_TIMEOUT=1, 596 NET_ROSE_CALL_REQUEST_TIMEOUT=2, 597 NET_ROSE_RESET_REQUEST_TIMEOUT=3, 598 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, 599 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, 600 NET_ROSE_ROUTING_CONTROL=6, 601 NET_ROSE_LINK_FAIL_TIMEOUT=7, 602 NET_ROSE_MAX_VCS=8, 603 NET_ROSE_WINDOW_SIZE=9, 604 NET_ROSE_NO_ACTIVITY_TIMEOUT=10 605 }; 606 607 /* /proc/sys/net/x25 */ 608 enum { 609 NET_X25_RESTART_REQUEST_TIMEOUT=1, 610 NET_X25_CALL_REQUEST_TIMEOUT=2, 611 NET_X25_RESET_REQUEST_TIMEOUT=3, 612 NET_X25_CLEAR_REQUEST_TIMEOUT=4, 613 NET_X25_ACK_HOLD_BACK_TIMEOUT=5 614 }; 615 616 /* /proc/sys/net/token-ring */ 617 enum 618 { 619 NET_TR_RIF_TIMEOUT=1 620 }; 621 622 /* /proc/sys/net/decnet/ */ 623 enum { 624 NET_DECNET_NODE_TYPE = 1, 625 NET_DECNET_NODE_ADDRESS = 2, 626 NET_DECNET_NODE_NAME = 3, 627 NET_DECNET_DEFAULT_DEVICE = 4, 628 NET_DECNET_TIME_WAIT = 5, 629 NET_DECNET_DN_COUNT = 6, 630 NET_DECNET_DI_COUNT = 7, 631 NET_DECNET_DR_COUNT = 8, 632 NET_DECNET_DST_GC_INTERVAL = 9, 633 NET_DECNET_CONF = 10, 634 NET_DECNET_NO_FC_MAX_CWND = 11, 635 NET_DECNET_DEBUG_LEVEL = 255 636 }; 637 638 /* /proc/sys/net/decnet/conf/<dev> */ 639 enum { 640 NET_DECNET_CONF_LOOPBACK = -2, 641 NET_DECNET_CONF_DDCMP = -3, 642 NET_DECNET_CONF_PPP = -4, 643 NET_DECNET_CONF_X25 = -5, 644 NET_DECNET_CONF_GRE = -6, 645 NET_DECNET_CONF_ETHER = -7 646 647 /* ... and ifindex of devices */ 648 }; 649 650 /* /proc/sys/net/decnet/conf/<dev>/ */ 651 enum { 652 NET_DECNET_CONF_DEV_PRIORITY = 1, 653 NET_DECNET_CONF_DEV_T1 = 2, 654 NET_DECNET_CONF_DEV_T2 = 3, 655 NET_DECNET_CONF_DEV_T3 = 4, 656 NET_DECNET_CONF_DEV_FORWARDING = 5, 657 NET_DECNET_CONF_DEV_BLKSIZE = 6, 658 NET_DECNET_CONF_DEV_STATE = 7 659 }; 660 661 /* /proc/sys/net/sctp */ 662 enum { 663 NET_SCTP_RTO_INITIAL = 1, 664 NET_SCTP_RTO_MIN = 2, 665 NET_SCTP_RTO_MAX = 3, 666 NET_SCTP_RTO_ALPHA = 4, 667 NET_SCTP_RTO_BETA = 5, 668 NET_SCTP_VALID_COOKIE_LIFE = 6, 669 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, 670 NET_SCTP_PATH_MAX_RETRANS = 8, 671 NET_SCTP_MAX_INIT_RETRANSMITS = 9, 672 NET_SCTP_HB_INTERVAL = 10, 673 NET_SCTP_PRESERVE_ENABLE = 11, 674 NET_SCTP_MAX_BURST = 12, 675 NET_SCTP_ADDIP_ENABLE = 13, 676 NET_SCTP_PRSCTP_ENABLE = 14, 677 NET_SCTP_SNDBUF_POLICY = 15, 678 NET_SCTP_SACK_TIMEOUT = 16, 679 }; 680 681 /* /proc/sys/net/bridge */ 682 enum { 683 NET_BRIDGE_NF_CALL_ARPTABLES = 1, 684 NET_BRIDGE_NF_CALL_IPTABLES = 2, 685 NET_BRIDGE_NF_CALL_IP6TABLES = 3, 686 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, 687 }; 688 689 /* CTL_PROC names: */ 690 691 /* CTL_FS names: */ 692 enum 693 { 694 FS_NRINODE=1, /* int:current number of allocated inodes */ 695 FS_STATINODE=2, 696 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ 697 FS_NRDQUOT=4, /* int:current number of allocated dquots */ 698 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */ 699 FS_NRFILE=6, /* int:current number of allocated filedescriptors */ 700 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ 701 FS_DENTRY=8, 702 FS_NRSUPER=9, /* int:current number of allocated super_blocks */ 703 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ 704 FS_OVERFLOWUID=11, /* int: overflow UID */ 705 FS_OVERFLOWGID=12, /* int: overflow GID */ 706 FS_LEASES=13, /* int: leases enabled */ 707 FS_DIR_NOTIFY=14, /* int: directory notification enabled */ 708 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ 709 FS_DQSTATS=16, /* disc quota usage statistics and control */ 710 FS_XFS=17, /* struct: control xfs parameters */ 711 FS_AIO_NR=18, /* current system-wide number of aio requests */ 712 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */ 713 FS_INOTIFY=20, /* inotify submenu */ 714 }; 715 716 /* /proc/sys/fs/quota/ */ 717 enum { 718 FS_DQ_LOOKUPS = 1, 719 FS_DQ_DROPS = 2, 720 FS_DQ_READS = 3, 721 FS_DQ_WRITES = 4, 722 FS_DQ_CACHE_HITS = 5, 723 FS_DQ_ALLOCATED = 6, 724 FS_DQ_FREE = 7, 725 FS_DQ_SYNCS = 8, 726 FS_DQ_WARNINGS = 9, 727 }; 728 729 /* CTL_DEBUG names: */ 730 731 /* CTL_DEV names: */ 732 enum { 733 DEV_CDROM=1, 734 DEV_HWMON=2, 735 DEV_PARPORT=3, 736 DEV_RAID=4, 737 DEV_MAC_HID=5, 738 DEV_SCSI=6, 739 DEV_IPMI=7, 740 }; 741 742 /* /proc/sys/dev/cdrom */ 743 enum { 744 DEV_CDROM_INFO=1, 745 DEV_CDROM_AUTOCLOSE=2, 746 DEV_CDROM_AUTOEJECT=3, 747 DEV_CDROM_DEBUG=4, 748 DEV_CDROM_LOCK=5, 749 DEV_CDROM_CHECK_MEDIA=6 750 }; 751 752 /* /proc/sys/dev/parport */ 753 enum { 754 DEV_PARPORT_DEFAULT=-3 755 }; 756 757 /* /proc/sys/dev/raid */ 758 enum { 759 DEV_RAID_SPEED_LIMIT_MIN=1, 760 DEV_RAID_SPEED_LIMIT_MAX=2 761 }; 762 763 /* /proc/sys/dev/parport/default */ 764 enum { 765 DEV_PARPORT_DEFAULT_TIMESLICE=1, 766 DEV_PARPORT_DEFAULT_SPINTIME=2 767 }; 768 769 /* /proc/sys/dev/parport/parport n */ 770 enum { 771 DEV_PARPORT_SPINTIME=1, 772 DEV_PARPORT_BASE_ADDR=2, 773 DEV_PARPORT_IRQ=3, 774 DEV_PARPORT_DMA=4, 775 DEV_PARPORT_MODES=5, 776 DEV_PARPORT_DEVICES=6, 777 DEV_PARPORT_AUTOPROBE=16 778 }; 779 780 /* /proc/sys/dev/parport/parport n/devices/ */ 781 enum { 782 DEV_PARPORT_DEVICES_ACTIVE=-3, 783 }; 784 785 /* /proc/sys/dev/parport/parport n/devices/device n */ 786 enum { 787 DEV_PARPORT_DEVICE_TIMESLICE=1, 788 }; 789 790 /* /proc/sys/dev/mac_hid */ 791 enum { 792 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, 793 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, 794 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, 795 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, 796 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, 797 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 798 }; 799 800 /* /proc/sys/dev/scsi */ 801 enum { 802 DEV_SCSI_LOGGING_LEVEL=1, 803 }; 804 805 /* /proc/sys/dev/ipmi */ 806 enum { 807 DEV_IPMI_POWEROFF_POWERCYCLE=1, 808 }; 809 810 /* /proc/sys/abi */ 811 enum 812 { 813 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ 814 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ 815 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ 816 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ 817 ABI_TRACE=5, /* tracing flags */ 818 ABI_FAKE_UTSNAME=6, /* fake target utsname information */ 819 }; 820 821 #ifdef __KERNEL__ 822 823 extern void sysctl_init(void); 824 825 typedef struct ctl_table ctl_table; 826 827 typedef int ctl_handler (ctl_table *table, int __user *name, int nlen, 828 void __user *oldval, size_t __user *oldlenp, 829 void __user *newval, size_t newlen, 830 void **context); 831 832 typedef int proc_handler (ctl_table *ctl, int write, struct file * filp, 833 void __user *buffer, size_t *lenp, loff_t *ppos); 834 835 extern int proc_dostring(ctl_table *, int, struct file *, 836 void __user *, size_t *, loff_t *); 837 extern int proc_dointvec(ctl_table *, int, struct file *, 838 void __user *, size_t *, loff_t *); 839 extern int proc_dointvec_bset(ctl_table *, int, struct file *, 840 void __user *, size_t *, loff_t *); 841 extern int proc_dointvec_minmax(ctl_table *, int, struct file *, 842 void __user *, size_t *, loff_t *); 843 extern int proc_dointvec_jiffies(ctl_table *, int, struct file *, 844 void __user *, size_t *, loff_t *); 845 extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *, 846 void __user *, size_t *, loff_t *); 847 extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *, 848 void __user *, size_t *, loff_t *); 849 extern int proc_doulongvec_minmax(ctl_table *, int, struct file *, 850 void __user *, size_t *, loff_t *); 851 extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int, 852 struct file *, void __user *, size_t *, loff_t *); 853 854 extern int do_sysctl (int __user *name, int nlen, 855 void __user *oldval, size_t __user *oldlenp, 856 void __user *newval, size_t newlen); 857 858 extern int do_sysctl_strategy (ctl_table *table, 859 int __user *name, int nlen, 860 void __user *oldval, size_t __user *oldlenp, 861 void __user *newval, size_t newlen, void ** context); 862 863 extern ctl_handler sysctl_string; 864 extern ctl_handler sysctl_intvec; 865 extern ctl_handler sysctl_jiffies; 866 extern ctl_handler sysctl_ms_jiffies; 867 868 869 /* 870 * Register a set of sysctl names by calling register_sysctl_table 871 * with an initialised array of ctl_table's. An entry with zero 872 * ctl_name terminates the table. table->de will be set up by the 873 * registration and need not be initialised in advance. 874 * 875 * sysctl names can be mirrored automatically under /proc/sys. The 876 * procname supplied controls /proc naming. 877 * 878 * The table's mode will be honoured both for sys_sysctl(2) and 879 * proc-fs access. 880 * 881 * Leaf nodes in the sysctl tree will be represented by a single file 882 * under /proc; non-leaf nodes will be represented by directories. A 883 * null procname disables /proc mirroring at this node. 884 * 885 * sysctl(2) can automatically manage read and write requests through 886 * the sysctl table. The data and maxlen fields of the ctl_table 887 * struct enable minimal validation of the values being written to be 888 * performed, and the mode field allows minimal authentication. 889 * 890 * More sophisticated management can be enabled by the provision of a 891 * strategy routine with the table entry. This will be called before 892 * any automatic read or write of the data is performed. 893 * 894 * The strategy routine may return: 895 * <0: Error occurred (error is passed to user process) 896 * 0: OK - proceed with automatic read or write. 897 * >0: OK - read or write has been done by the strategy routine, so 898 * return immediately. 899 * 900 * There must be a proc_handler routine for any terminal nodes 901 * mirrored under /proc/sys (non-terminals are handled by a built-in 902 * directory handler). Several default handlers are available to 903 * cover common cases. 904 */ 905 906 /* A sysctl table is an array of struct ctl_table: */ 907 struct ctl_table 908 { 909 int ctl_name; /* Binary ID */ 910 const char *procname; /* Text ID for /proc/sys, or zero */ 911 void *data; 912 int maxlen; 913 mode_t mode; 914 ctl_table *child; 915 proc_handler *proc_handler; /* Callback for text formatting */ 916 ctl_handler *strategy; /* Callback function for all r/w */ 917 struct proc_dir_entry *de; /* /proc control block */ 918 void *extra1; 919 void *extra2; 920 }; 921 922 /* struct ctl_table_header is used to maintain dynamic lists of 923 ctl_table trees. */ 924 struct ctl_table_header 925 { 926 ctl_table *ctl_table; 927 struct list_head ctl_entry; 928 }; 929 930 struct ctl_table_header * register_sysctl_table(ctl_table * table, 931 int insert_at_head); 932 void unregister_sysctl_table(struct ctl_table_header * table); 933 934 #else /* __KERNEL__ */ 935 936 #endif /* __KERNEL__ */ 937 938 #endif /* _LINUX_SYSCTL_H */ 939