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/compiler.h> 24 25 struct file; 26 struct completion; 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 uevent helper (deprecated) */ 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 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */ 184 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */ 185 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */ 186 VM_ZONE_RECLAIM_INTERVAL=32, /* time period to wait after reclaim failure */ 187 }; 188 189 190 /* CTL_NET names: */ 191 enum 192 { 193 NET_CORE=1, 194 NET_ETHER=2, 195 NET_802=3, 196 NET_UNIX=4, 197 NET_IPV4=5, 198 NET_IPX=6, 199 NET_ATALK=7, 200 NET_NETROM=8, 201 NET_AX25=9, 202 NET_BRIDGE=10, 203 NET_ROSE=11, 204 NET_IPV6=12, 205 NET_X25=13, 206 NET_TR=14, 207 NET_DECNET=15, 208 NET_ECONET=16, 209 NET_SCTP=17, 210 NET_LLC=18, 211 NET_NETFILTER=19, 212 }; 213 214 /* /proc/sys/kernel/random */ 215 enum 216 { 217 RANDOM_POOLSIZE=1, 218 RANDOM_ENTROPY_COUNT=2, 219 RANDOM_READ_THRESH=3, 220 RANDOM_WRITE_THRESH=4, 221 RANDOM_BOOT_ID=5, 222 RANDOM_UUID=6 223 }; 224 225 /* /proc/sys/kernel/pty */ 226 enum 227 { 228 PTY_MAX=1, 229 PTY_NR=2 230 }; 231 232 /* /proc/sys/bus/isa */ 233 enum 234 { 235 BUS_ISA_MEM_BASE=1, 236 BUS_ISA_PORT_BASE=2, 237 BUS_ISA_PORT_SHIFT=3 238 }; 239 240 /* /proc/sys/net/core */ 241 enum 242 { 243 NET_CORE_WMEM_MAX=1, 244 NET_CORE_RMEM_MAX=2, 245 NET_CORE_WMEM_DEFAULT=3, 246 NET_CORE_RMEM_DEFAULT=4, 247 /* was NET_CORE_DESTROY_DELAY */ 248 NET_CORE_MAX_BACKLOG=6, 249 NET_CORE_FASTROUTE=7, 250 NET_CORE_MSG_COST=8, 251 NET_CORE_MSG_BURST=9, 252 NET_CORE_OPTMEM_MAX=10, 253 NET_CORE_HOT_LIST_LENGTH=11, 254 NET_CORE_DIVERT_VERSION=12, 255 NET_CORE_NO_CONG_THRESH=13, 256 NET_CORE_NO_CONG=14, 257 NET_CORE_LO_CONG=15, 258 NET_CORE_MOD_CONG=16, 259 NET_CORE_DEV_WEIGHT=17, 260 NET_CORE_SOMAXCONN=18, 261 NET_CORE_BUDGET=19, 262 }; 263 264 /* /proc/sys/net/ethernet */ 265 266 /* /proc/sys/net/802 */ 267 268 /* /proc/sys/net/unix */ 269 270 enum 271 { 272 NET_UNIX_DESTROY_DELAY=1, 273 NET_UNIX_DELETE_DELAY=2, 274 NET_UNIX_MAX_DGRAM_QLEN=3, 275 }; 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 }; 312 313 /* /proc/sys/net/ipv4 */ 314 enum 315 { 316 /* v2.0 compatibile variables */ 317 NET_IPV4_FORWARD=8, 318 NET_IPV4_DYNADDR=9, 319 320 NET_IPV4_CONF=16, 321 NET_IPV4_NEIGH=17, 322 NET_IPV4_ROUTE=18, 323 NET_IPV4_FIB_HASH=19, 324 NET_IPV4_NETFILTER=20, 325 326 NET_IPV4_TCP_TIMESTAMPS=33, 327 NET_IPV4_TCP_WINDOW_SCALING=34, 328 NET_IPV4_TCP_SACK=35, 329 NET_IPV4_TCP_RETRANS_COLLAPSE=36, 330 NET_IPV4_DEFAULT_TTL=37, 331 NET_IPV4_AUTOCONFIG=38, 332 NET_IPV4_NO_PMTU_DISC=39, 333 NET_IPV4_TCP_SYN_RETRIES=40, 334 NET_IPV4_IPFRAG_HIGH_THRESH=41, 335 NET_IPV4_IPFRAG_LOW_THRESH=42, 336 NET_IPV4_IPFRAG_TIME=43, 337 NET_IPV4_TCP_MAX_KA_PROBES=44, 338 NET_IPV4_TCP_KEEPALIVE_TIME=45, 339 NET_IPV4_TCP_KEEPALIVE_PROBES=46, 340 NET_IPV4_TCP_RETRIES1=47, 341 NET_IPV4_TCP_RETRIES2=48, 342 NET_IPV4_TCP_FIN_TIMEOUT=49, 343 NET_IPV4_IP_MASQ_DEBUG=50, 344 NET_TCP_SYNCOOKIES=51, 345 NET_TCP_STDURG=52, 346 NET_TCP_RFC1337=53, 347 NET_TCP_SYN_TAILDROP=54, 348 NET_TCP_MAX_SYN_BACKLOG=55, 349 NET_IPV4_LOCAL_PORT_RANGE=56, 350 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, 351 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, 352 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, 353 NET_IPV4_ICMP_DESTUNREACH_RATE=60, 354 NET_IPV4_ICMP_TIMEEXCEED_RATE=61, 355 NET_IPV4_ICMP_PARAMPROB_RATE=62, 356 NET_IPV4_ICMP_ECHOREPLY_RATE=63, 357 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, 358 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, 359 NET_TCP_TW_RECYCLE=66, 360 NET_IPV4_ALWAYS_DEFRAG=67, 361 NET_IPV4_TCP_KEEPALIVE_INTVL=68, 362 NET_IPV4_INET_PEER_THRESHOLD=69, 363 NET_IPV4_INET_PEER_MINTTL=70, 364 NET_IPV4_INET_PEER_MAXTTL=71, 365 NET_IPV4_INET_PEER_GC_MINTIME=72, 366 NET_IPV4_INET_PEER_GC_MAXTIME=73, 367 NET_TCP_ORPHAN_RETRIES=74, 368 NET_TCP_ABORT_ON_OVERFLOW=75, 369 NET_TCP_SYNACK_RETRIES=76, 370 NET_TCP_MAX_ORPHANS=77, 371 NET_TCP_MAX_TW_BUCKETS=78, 372 NET_TCP_FACK=79, 373 NET_TCP_REORDERING=80, 374 NET_TCP_ECN=81, 375 NET_TCP_DSACK=82, 376 NET_TCP_MEM=83, 377 NET_TCP_WMEM=84, 378 NET_TCP_RMEM=85, 379 NET_TCP_APP_WIN=86, 380 NET_TCP_ADV_WIN_SCALE=87, 381 NET_IPV4_NONLOCAL_BIND=88, 382 NET_IPV4_ICMP_RATELIMIT=89, 383 NET_IPV4_ICMP_RATEMASK=90, 384 NET_TCP_TW_REUSE=91, 385 NET_TCP_FRTO=92, 386 NET_TCP_LOW_LATENCY=93, 387 NET_IPV4_IPFRAG_SECRET_INTERVAL=94, 388 NET_IPV4_IGMP_MAX_MSF=96, 389 NET_TCP_NO_METRICS_SAVE=97, 390 NET_TCP_DEFAULT_WIN_SCALE=105, 391 NET_TCP_MODERATE_RCVBUF=106, 392 NET_TCP_TSO_WIN_DIVISOR=107, 393 NET_TCP_BIC_BETA=108, 394 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109, 395 NET_TCP_CONG_CONTROL=110, 396 NET_TCP_ABC=111, 397 NET_IPV4_IPFRAG_MAX_DIST=112, 398 }; 399 400 enum { 401 NET_IPV4_ROUTE_FLUSH=1, 402 NET_IPV4_ROUTE_MIN_DELAY=2, 403 NET_IPV4_ROUTE_MAX_DELAY=3, 404 NET_IPV4_ROUTE_GC_THRESH=4, 405 NET_IPV4_ROUTE_MAX_SIZE=5, 406 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, 407 NET_IPV4_ROUTE_GC_TIMEOUT=7, 408 NET_IPV4_ROUTE_GC_INTERVAL=8, 409 NET_IPV4_ROUTE_REDIRECT_LOAD=9, 410 NET_IPV4_ROUTE_REDIRECT_NUMBER=10, 411 NET_IPV4_ROUTE_REDIRECT_SILENCE=11, 412 NET_IPV4_ROUTE_ERROR_COST=12, 413 NET_IPV4_ROUTE_ERROR_BURST=13, 414 NET_IPV4_ROUTE_GC_ELASTICITY=14, 415 NET_IPV4_ROUTE_MTU_EXPIRES=15, 416 NET_IPV4_ROUTE_MIN_PMTU=16, 417 NET_IPV4_ROUTE_MIN_ADVMSS=17, 418 NET_IPV4_ROUTE_SECRET_INTERVAL=18, 419 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19, 420 }; 421 422 enum 423 { 424 NET_PROTO_CONF_ALL=-2, 425 NET_PROTO_CONF_DEFAULT=-3 426 427 /* And device ifindices ... */ 428 }; 429 430 enum 431 { 432 NET_IPV4_CONF_FORWARDING=1, 433 NET_IPV4_CONF_MC_FORWARDING=2, 434 NET_IPV4_CONF_PROXY_ARP=3, 435 NET_IPV4_CONF_ACCEPT_REDIRECTS=4, 436 NET_IPV4_CONF_SECURE_REDIRECTS=5, 437 NET_IPV4_CONF_SEND_REDIRECTS=6, 438 NET_IPV4_CONF_SHARED_MEDIA=7, 439 NET_IPV4_CONF_RP_FILTER=8, 440 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, 441 NET_IPV4_CONF_BOOTP_RELAY=10, 442 NET_IPV4_CONF_LOG_MARTIANS=11, 443 NET_IPV4_CONF_TAG=12, 444 NET_IPV4_CONF_ARPFILTER=13, 445 NET_IPV4_CONF_MEDIUM_ID=14, 446 NET_IPV4_CONF_NOXFRM=15, 447 NET_IPV4_CONF_NOPOLICY=16, 448 NET_IPV4_CONF_FORCE_IGMP_VERSION=17, 449 NET_IPV4_CONF_ARP_ANNOUNCE=18, 450 NET_IPV4_CONF_ARP_IGNORE=19, 451 NET_IPV4_CONF_PROMOTE_SECONDARIES=20, 452 __NET_IPV4_CONF_MAX 453 }; 454 455 /* /proc/sys/net/ipv4/netfilter */ 456 enum 457 { 458 NET_IPV4_NF_CONNTRACK_MAX=1, 459 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 460 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 461 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 462 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 463 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 464 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 465 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 466 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 467 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, 468 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 469 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, 470 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, 471 NET_IPV4_NF_CONNTRACK_BUCKETS=14, 472 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15, 473 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 474 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17, 475 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18, 476 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19, 477 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 478 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 479 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 480 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 481 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 482 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 483 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 484 NET_IPV4_NF_CONNTRACK_COUNT=27, 485 }; 486 487 /* /proc/sys/net/ipv6 */ 488 enum { 489 NET_IPV6_CONF=16, 490 NET_IPV6_NEIGH=17, 491 NET_IPV6_ROUTE=18, 492 NET_IPV6_ICMP=19, 493 NET_IPV6_BINDV6ONLY=20, 494 NET_IPV6_IP6FRAG_HIGH_THRESH=21, 495 NET_IPV6_IP6FRAG_LOW_THRESH=22, 496 NET_IPV6_IP6FRAG_TIME=23, 497 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24, 498 NET_IPV6_MLD_MAX_MSF=25, 499 }; 500 501 enum { 502 NET_IPV6_ROUTE_FLUSH=1, 503 NET_IPV6_ROUTE_GC_THRESH=2, 504 NET_IPV6_ROUTE_MAX_SIZE=3, 505 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, 506 NET_IPV6_ROUTE_GC_TIMEOUT=5, 507 NET_IPV6_ROUTE_GC_INTERVAL=6, 508 NET_IPV6_ROUTE_GC_ELASTICITY=7, 509 NET_IPV6_ROUTE_MTU_EXPIRES=8, 510 NET_IPV6_ROUTE_MIN_ADVMSS=9, 511 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10 512 }; 513 514 enum { 515 NET_IPV6_FORWARDING=1, 516 NET_IPV6_HOP_LIMIT=2, 517 NET_IPV6_MTU=3, 518 NET_IPV6_ACCEPT_RA=4, 519 NET_IPV6_ACCEPT_REDIRECTS=5, 520 NET_IPV6_AUTOCONF=6, 521 NET_IPV6_DAD_TRANSMITS=7, 522 NET_IPV6_RTR_SOLICITS=8, 523 NET_IPV6_RTR_SOLICIT_INTERVAL=9, 524 NET_IPV6_RTR_SOLICIT_DELAY=10, 525 NET_IPV6_USE_TEMPADDR=11, 526 NET_IPV6_TEMP_VALID_LFT=12, 527 NET_IPV6_TEMP_PREFERED_LFT=13, 528 NET_IPV6_REGEN_MAX_RETRY=14, 529 NET_IPV6_MAX_DESYNC_FACTOR=15, 530 NET_IPV6_MAX_ADDRESSES=16, 531 NET_IPV6_FORCE_MLD_VERSION=17, 532 __NET_IPV6_MAX 533 }; 534 535 /* /proc/sys/net/ipv6/icmp */ 536 enum { 537 NET_IPV6_ICMP_RATELIMIT=1 538 }; 539 540 /* /proc/sys/net/<protocol>/neigh/<dev> */ 541 enum { 542 NET_NEIGH_MCAST_SOLICIT=1, 543 NET_NEIGH_UCAST_SOLICIT=2, 544 NET_NEIGH_APP_SOLICIT=3, 545 NET_NEIGH_RETRANS_TIME=4, 546 NET_NEIGH_REACHABLE_TIME=5, 547 NET_NEIGH_DELAY_PROBE_TIME=6, 548 NET_NEIGH_GC_STALE_TIME=7, 549 NET_NEIGH_UNRES_QLEN=8, 550 NET_NEIGH_PROXY_QLEN=9, 551 NET_NEIGH_ANYCAST_DELAY=10, 552 NET_NEIGH_PROXY_DELAY=11, 553 NET_NEIGH_LOCKTIME=12, 554 NET_NEIGH_GC_INTERVAL=13, 555 NET_NEIGH_GC_THRESH1=14, 556 NET_NEIGH_GC_THRESH2=15, 557 NET_NEIGH_GC_THRESH3=16, 558 NET_NEIGH_RETRANS_TIME_MS=17, 559 NET_NEIGH_REACHABLE_TIME_MS=18, 560 __NET_NEIGH_MAX 561 }; 562 563 /* /proc/sys/net/ipx */ 564 enum { 565 NET_IPX_PPROP_BROADCASTING=1, 566 NET_IPX_FORWARDING=2 567 }; 568 569 /* /proc/sys/net/llc */ 570 enum { 571 NET_LLC2=1, 572 NET_LLC_STATION=2, 573 }; 574 575 /* /proc/sys/net/llc/llc2 */ 576 enum { 577 NET_LLC2_TIMEOUT=1, 578 }; 579 580 /* /proc/sys/net/llc/station */ 581 enum { 582 NET_LLC_STATION_ACK_TIMEOUT=1, 583 }; 584 585 /* /proc/sys/net/llc/llc2/timeout */ 586 enum { 587 NET_LLC2_ACK_TIMEOUT=1, 588 NET_LLC2_P_TIMEOUT=2, 589 NET_LLC2_REJ_TIMEOUT=3, 590 NET_LLC2_BUSY_TIMEOUT=4, 591 }; 592 593 /* /proc/sys/net/appletalk */ 594 enum { 595 NET_ATALK_AARP_EXPIRY_TIME=1, 596 NET_ATALK_AARP_TICK_TIME=2, 597 NET_ATALK_AARP_RETRANSMIT_LIMIT=3, 598 NET_ATALK_AARP_RESOLVE_TIME=4 599 }; 600 601 602 /* /proc/sys/net/netrom */ 603 enum { 604 NET_NETROM_DEFAULT_PATH_QUALITY=1, 605 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, 606 NET_NETROM_NETWORK_TTL_INITIALISER=3, 607 NET_NETROM_TRANSPORT_TIMEOUT=4, 608 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, 609 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, 610 NET_NETROM_TRANSPORT_BUSY_DELAY=7, 611 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, 612 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, 613 NET_NETROM_ROUTING_CONTROL=10, 614 NET_NETROM_LINK_FAILS_COUNT=11, 615 NET_NETROM_RESET=12 616 }; 617 618 /* /proc/sys/net/ax25 */ 619 enum { 620 NET_AX25_IP_DEFAULT_MODE=1, 621 NET_AX25_DEFAULT_MODE=2, 622 NET_AX25_BACKOFF_TYPE=3, 623 NET_AX25_CONNECT_MODE=4, 624 NET_AX25_STANDARD_WINDOW=5, 625 NET_AX25_EXTENDED_WINDOW=6, 626 NET_AX25_T1_TIMEOUT=7, 627 NET_AX25_T2_TIMEOUT=8, 628 NET_AX25_T3_TIMEOUT=9, 629 NET_AX25_IDLE_TIMEOUT=10, 630 NET_AX25_N2=11, 631 NET_AX25_PACLEN=12, 632 NET_AX25_PROTOCOL=13, 633 NET_AX25_DAMA_SLAVE_TIMEOUT=14 634 }; 635 636 /* /proc/sys/net/rose */ 637 enum { 638 NET_ROSE_RESTART_REQUEST_TIMEOUT=1, 639 NET_ROSE_CALL_REQUEST_TIMEOUT=2, 640 NET_ROSE_RESET_REQUEST_TIMEOUT=3, 641 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, 642 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, 643 NET_ROSE_ROUTING_CONTROL=6, 644 NET_ROSE_LINK_FAIL_TIMEOUT=7, 645 NET_ROSE_MAX_VCS=8, 646 NET_ROSE_WINDOW_SIZE=9, 647 NET_ROSE_NO_ACTIVITY_TIMEOUT=10 648 }; 649 650 /* /proc/sys/net/x25 */ 651 enum { 652 NET_X25_RESTART_REQUEST_TIMEOUT=1, 653 NET_X25_CALL_REQUEST_TIMEOUT=2, 654 NET_X25_RESET_REQUEST_TIMEOUT=3, 655 NET_X25_CLEAR_REQUEST_TIMEOUT=4, 656 NET_X25_ACK_HOLD_BACK_TIMEOUT=5 657 }; 658 659 /* /proc/sys/net/token-ring */ 660 enum 661 { 662 NET_TR_RIF_TIMEOUT=1 663 }; 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 }; 683 684 /* /proc/sys/net/decnet/conf/<dev> */ 685 enum { 686 NET_DECNET_CONF_LOOPBACK = -2, 687 NET_DECNET_CONF_DDCMP = -3, 688 NET_DECNET_CONF_PPP = -4, 689 NET_DECNET_CONF_X25 = -5, 690 NET_DECNET_CONF_GRE = -6, 691 NET_DECNET_CONF_ETHER = -7 692 693 /* ... and ifindex of devices */ 694 }; 695 696 /* /proc/sys/net/decnet/conf/<dev>/ */ 697 enum { 698 NET_DECNET_CONF_DEV_PRIORITY = 1, 699 NET_DECNET_CONF_DEV_T1 = 2, 700 NET_DECNET_CONF_DEV_T2 = 3, 701 NET_DECNET_CONF_DEV_T3 = 4, 702 NET_DECNET_CONF_DEV_FORWARDING = 5, 703 NET_DECNET_CONF_DEV_BLKSIZE = 6, 704 NET_DECNET_CONF_DEV_STATE = 7 705 }; 706 707 /* /proc/sys/net/sctp */ 708 enum { 709 NET_SCTP_RTO_INITIAL = 1, 710 NET_SCTP_RTO_MIN = 2, 711 NET_SCTP_RTO_MAX = 3, 712 NET_SCTP_RTO_ALPHA = 4, 713 NET_SCTP_RTO_BETA = 5, 714 NET_SCTP_VALID_COOKIE_LIFE = 6, 715 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, 716 NET_SCTP_PATH_MAX_RETRANS = 8, 717 NET_SCTP_MAX_INIT_RETRANSMITS = 9, 718 NET_SCTP_HB_INTERVAL = 10, 719 NET_SCTP_PRESERVE_ENABLE = 11, 720 NET_SCTP_MAX_BURST = 12, 721 NET_SCTP_ADDIP_ENABLE = 13, 722 NET_SCTP_PRSCTP_ENABLE = 14, 723 NET_SCTP_SNDBUF_POLICY = 15, 724 NET_SCTP_SACK_TIMEOUT = 16, 725 NET_SCTP_RCVBUF_POLICY = 17, 726 }; 727 728 /* /proc/sys/net/bridge */ 729 enum { 730 NET_BRIDGE_NF_CALL_ARPTABLES = 1, 731 NET_BRIDGE_NF_CALL_IPTABLES = 2, 732 NET_BRIDGE_NF_CALL_IP6TABLES = 3, 733 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, 734 }; 735 736 /* CTL_PROC names: */ 737 738 /* CTL_FS names: */ 739 enum 740 { 741 FS_NRINODE=1, /* int:current number of allocated inodes */ 742 FS_STATINODE=2, 743 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ 744 FS_NRDQUOT=4, /* int:current number of allocated dquots */ 745 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */ 746 FS_NRFILE=6, /* int:current number of allocated filedescriptors */ 747 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ 748 FS_DENTRY=8, 749 FS_NRSUPER=9, /* int:current number of allocated super_blocks */ 750 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ 751 FS_OVERFLOWUID=11, /* int: overflow UID */ 752 FS_OVERFLOWGID=12, /* int: overflow GID */ 753 FS_LEASES=13, /* int: leases enabled */ 754 FS_DIR_NOTIFY=14, /* int: directory notification enabled */ 755 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ 756 FS_DQSTATS=16, /* disc quota usage statistics and control */ 757 FS_XFS=17, /* struct: control xfs parameters */ 758 FS_AIO_NR=18, /* current system-wide number of aio requests */ 759 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */ 760 FS_INOTIFY=20, /* inotify submenu */ 761 }; 762 763 /* /proc/sys/fs/quota/ */ 764 enum { 765 FS_DQ_LOOKUPS = 1, 766 FS_DQ_DROPS = 2, 767 FS_DQ_READS = 3, 768 FS_DQ_WRITES = 4, 769 FS_DQ_CACHE_HITS = 5, 770 FS_DQ_ALLOCATED = 6, 771 FS_DQ_FREE = 7, 772 FS_DQ_SYNCS = 8, 773 FS_DQ_WARNINGS = 9, 774 }; 775 776 /* CTL_DEBUG names: */ 777 778 /* CTL_DEV names: */ 779 enum { 780 DEV_CDROM=1, 781 DEV_HWMON=2, 782 DEV_PARPORT=3, 783 DEV_RAID=4, 784 DEV_MAC_HID=5, 785 DEV_SCSI=6, 786 DEV_IPMI=7, 787 }; 788 789 /* /proc/sys/dev/cdrom */ 790 enum { 791 DEV_CDROM_INFO=1, 792 DEV_CDROM_AUTOCLOSE=2, 793 DEV_CDROM_AUTOEJECT=3, 794 DEV_CDROM_DEBUG=4, 795 DEV_CDROM_LOCK=5, 796 DEV_CDROM_CHECK_MEDIA=6 797 }; 798 799 /* /proc/sys/dev/parport */ 800 enum { 801 DEV_PARPORT_DEFAULT=-3 802 }; 803 804 /* /proc/sys/dev/raid */ 805 enum { 806 DEV_RAID_SPEED_LIMIT_MIN=1, 807 DEV_RAID_SPEED_LIMIT_MAX=2 808 }; 809 810 /* /proc/sys/dev/parport/default */ 811 enum { 812 DEV_PARPORT_DEFAULT_TIMESLICE=1, 813 DEV_PARPORT_DEFAULT_SPINTIME=2 814 }; 815 816 /* /proc/sys/dev/parport/parport n */ 817 enum { 818 DEV_PARPORT_SPINTIME=1, 819 DEV_PARPORT_BASE_ADDR=2, 820 DEV_PARPORT_IRQ=3, 821 DEV_PARPORT_DMA=4, 822 DEV_PARPORT_MODES=5, 823 DEV_PARPORT_DEVICES=6, 824 DEV_PARPORT_AUTOPROBE=16 825 }; 826 827 /* /proc/sys/dev/parport/parport n/devices/ */ 828 enum { 829 DEV_PARPORT_DEVICES_ACTIVE=-3, 830 }; 831 832 /* /proc/sys/dev/parport/parport n/devices/device n */ 833 enum { 834 DEV_PARPORT_DEVICE_TIMESLICE=1, 835 }; 836 837 /* /proc/sys/dev/mac_hid */ 838 enum { 839 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, 840 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, 841 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, 842 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, 843 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, 844 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 845 }; 846 847 /* /proc/sys/dev/scsi */ 848 enum { 849 DEV_SCSI_LOGGING_LEVEL=1, 850 }; 851 852 /* /proc/sys/dev/ipmi */ 853 enum { 854 DEV_IPMI_POWEROFF_POWERCYCLE=1, 855 }; 856 857 /* /proc/sys/abi */ 858 enum 859 { 860 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ 861 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ 862 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ 863 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ 864 ABI_TRACE=5, /* tracing flags */ 865 ABI_FAKE_UTSNAME=6, /* fake target utsname information */ 866 }; 867 868 #ifdef __KERNEL__ 869 #include <linux/list.h> 870 871 extern void sysctl_init(void); 872 873 typedef struct ctl_table ctl_table; 874 875 typedef int ctl_handler (ctl_table *table, int __user *name, int nlen, 876 void __user *oldval, size_t __user *oldlenp, 877 void __user *newval, size_t newlen, 878 void **context); 879 880 typedef int proc_handler (ctl_table *ctl, int write, struct file * filp, 881 void __user *buffer, size_t *lenp, loff_t *ppos); 882 883 extern int proc_dostring(ctl_table *, int, struct file *, 884 void __user *, size_t *, loff_t *); 885 extern int proc_dointvec(ctl_table *, int, struct file *, 886 void __user *, size_t *, loff_t *); 887 extern int proc_dointvec_bset(ctl_table *, int, struct file *, 888 void __user *, size_t *, loff_t *); 889 extern int proc_dointvec_minmax(ctl_table *, int, struct file *, 890 void __user *, size_t *, loff_t *); 891 extern int proc_dointvec_jiffies(ctl_table *, int, struct file *, 892 void __user *, size_t *, loff_t *); 893 extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *, 894 void __user *, size_t *, loff_t *); 895 extern int proc_dointvec_ms_jiffies(ctl_table *, int, struct file *, 896 void __user *, size_t *, loff_t *); 897 extern int proc_doulongvec_minmax(ctl_table *, int, struct file *, 898 void __user *, size_t *, loff_t *); 899 extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int, 900 struct file *, void __user *, size_t *, loff_t *); 901 902 extern int do_sysctl (int __user *name, int nlen, 903 void __user *oldval, size_t __user *oldlenp, 904 void __user *newval, size_t newlen); 905 906 extern int do_sysctl_strategy (ctl_table *table, 907 int __user *name, int nlen, 908 void __user *oldval, size_t __user *oldlenp, 909 void __user *newval, size_t newlen, void ** context); 910 911 extern ctl_handler sysctl_string; 912 extern ctl_handler sysctl_intvec; 913 extern ctl_handler sysctl_jiffies; 914 extern ctl_handler sysctl_ms_jiffies; 915 916 917 /* 918 * Register a set of sysctl names by calling register_sysctl_table 919 * with an initialised array of ctl_table's. An entry with zero 920 * ctl_name terminates the table. table->de will be set up by the 921 * registration and need not be initialised in advance. 922 * 923 * sysctl names can be mirrored automatically under /proc/sys. The 924 * procname supplied controls /proc naming. 925 * 926 * The table's mode will be honoured both for sys_sysctl(2) and 927 * proc-fs access. 928 * 929 * Leaf nodes in the sysctl tree will be represented by a single file 930 * under /proc; non-leaf nodes will be represented by directories. A 931 * null procname disables /proc mirroring at this node. 932 * 933 * sysctl(2) can automatically manage read and write requests through 934 * the sysctl table. The data and maxlen fields of the ctl_table 935 * struct enable minimal validation of the values being written to be 936 * performed, and the mode field allows minimal authentication. 937 * 938 * More sophisticated management can be enabled by the provision of a 939 * strategy routine with the table entry. This will be called before 940 * any automatic read or write of the data is performed. 941 * 942 * The strategy routine may return: 943 * <0: Error occurred (error is passed to user process) 944 * 0: OK - proceed with automatic read or write. 945 * >0: OK - read or write has been done by the strategy routine, so 946 * return immediately. 947 * 948 * There must be a proc_handler routine for any terminal nodes 949 * mirrored under /proc/sys (non-terminals are handled by a built-in 950 * directory handler). Several default handlers are available to 951 * cover common cases. 952 */ 953 954 /* A sysctl table is an array of struct ctl_table: */ 955 struct ctl_table 956 { 957 int ctl_name; /* Binary ID */ 958 const char *procname; /* Text ID for /proc/sys, or zero */ 959 void *data; 960 int maxlen; 961 mode_t mode; 962 ctl_table *child; 963 proc_handler *proc_handler; /* Callback for text formatting */ 964 ctl_handler *strategy; /* Callback function for all r/w */ 965 struct proc_dir_entry *de; /* /proc control block */ 966 void *extra1; 967 void *extra2; 968 }; 969 970 /* struct ctl_table_header is used to maintain dynamic lists of 971 ctl_table trees. */ 972 struct ctl_table_header 973 { 974 ctl_table *ctl_table; 975 struct list_head ctl_entry; 976 int used; 977 struct completion *unregistering; 978 }; 979 980 struct ctl_table_header * register_sysctl_table(ctl_table * table, 981 int insert_at_head); 982 void unregister_sysctl_table(struct ctl_table_header * table); 983 984 #else /* __KERNEL__ */ 985 986 #endif /* __KERNEL__ */ 987 988 #endif /* _LINUX_SYSCTL_H */ 989