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