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 32 struct file; 33 struct 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 40 struct __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 60 enum 61 { 62 CTL_KERN=1, /* General kernel info and control */ 63 CTL_VM=2, /* VM management */ 64 CTL_NET=3, /* Networking */ 65 CTL_PROC=4, /* removal breaks strace(1) compilation */ 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_S390DBF=5677, /* s390 debug */ 74 CTL_SUNRPC=7249, /* sunrpc debug */ 75 CTL_PM=9899, /* frv power management */ 76 CTL_FRV=9898, /* frv specific sysctls */ 77 }; 78 79 /* CTL_BUS names: */ 80 enum 81 { 82 CTL_BUS_ISA=1 /* ISA */ 83 }; 84 85 /* /proc/sys/fs/inotify/ */ 86 enum 87 { 88 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */ 89 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */ 90 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */ 91 }; 92 93 /* CTL_KERN names: */ 94 enum 95 { 96 KERN_OSTYPE=1, /* string: system version */ 97 KERN_OSRELEASE=2, /* string: system release */ 98 KERN_OSREV=3, /* int: system revision */ 99 KERN_VERSION=4, /* string: compile time info */ 100 KERN_SECUREMASK=5, /* struct: maximum rights mask */ 101 KERN_PROF=6, /* table: profiling information */ 102 KERN_NODENAME=7, 103 KERN_DOMAINNAME=8, 104 105 KERN_CAP_BSET=14, /* int: capability bounding set */ 106 KERN_PANIC=15, /* int: panic timeout */ 107 KERN_REALROOTDEV=16, /* real root device to mount after initrd */ 108 109 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */ 110 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */ 111 KERN_PRINTK=23, /* struct: control printk logging parameters */ 112 KERN_NAMETRANS=24, /* Name translation */ 113 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */ 114 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */ 115 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */ 116 KERN_MODPROBE=28, 117 KERN_SG_BIG_BUFF=29, 118 KERN_ACCT=30, /* BSD process accounting parameters */ 119 KERN_PPC_L2CR=31, /* l2cr register on PPC */ 120 121 KERN_RTSIGNR=32, /* Number of rt sigs queued */ 122 KERN_RTSIGMAX=33, /* Max queuable */ 123 124 KERN_SHMMAX=34, /* long: Maximum shared memory segment */ 125 KERN_MSGMAX=35, /* int: Maximum size of a messege */ 126 KERN_MSGMNB=36, /* int: Maximum message queue size */ 127 KERN_MSGPOOL=37, /* int: Maximum system message pool size */ 128 KERN_SYSRQ=38, /* int: Sysreq enable */ 129 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */ 130 KERN_RANDOM=40, /* Random driver */ 131 KERN_SHMALL=41, /* int: Maximum size of shared memory */ 132 KERN_MSGMNI=42, /* int: msg queue identifiers */ 133 KERN_SEM=43, /* struct: sysv semaphore limits */ 134 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */ 135 KERN_SHMMNI=45, /* int: shm array identifiers */ 136 KERN_OVERFLOWUID=46, /* int: overflow UID */ 137 KERN_OVERFLOWGID=47, /* int: overflow GID */ 138 KERN_SHMPATH=48, /* string: path to shm fs */ 139 KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */ 140 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */ 141 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */ 142 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */ 143 KERN_TAINTED=53, /* int: various kernel tainted flags */ 144 KERN_CADPID=54, /* int: PID of the process to notify on CAD */ 145 KERN_PIDMAX=55, /* int: PID # limit */ 146 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */ 147 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */ 148 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */ 149 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */ 150 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */ 151 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */ 152 KERN_PTY=62, /* dir: pty driver */ 153 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */ 154 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */ 155 KERN_HZ_TIMER=65, /* int: hz timer on or off */ 156 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */ 157 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */ 158 KERN_RANDOMIZE=68, /* int: randomize virtual address space */ 159 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */ 160 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */ 161 KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */ 162 KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */ 163 KERN_COMPAT_LOG=73, /* int: print compat layer messages */ 164 KERN_MAX_LOCK_DEPTH=74, 165 KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */ 166 KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */ 167 }; 168 169 170 171 /* CTL_VM names: */ 172 enum 173 { 174 VM_UNUSED1=1, /* was: struct: Set vm swapping control */ 175 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */ 176 VM_UNUSED3=3, /* was: struct: Set free page thresholds */ 177 VM_UNUSED4=4, /* Spare */ 178 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */ 179 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */ 180 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */ 181 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */ 182 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */ 183 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */ 184 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */ 185 VM_DIRTY_RATIO=12, /* dirty_ratio */ 186 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */ 187 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */ 188 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */ 189 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */ 190 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */ 191 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */ 192 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */ 193 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */ 194 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */ 195 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */ 196 VM_LAPTOP_MODE=23, /* vm laptop mode */ 197 VM_BLOCK_DUMP=24, /* block dump mode */ 198 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */ 199 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */ 200 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */ 201 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */ 202 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */ 203 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */ 204 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */ 205 VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */ 206 VM_PANIC_ON_OOM=33, /* panic at out-of-memory */ 207 VM_VDSO_ENABLED=34, /* map VDSO into new processes? */ 208 VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */ 209 }; 210 211 212 /* CTL_NET names: */ 213 enum 214 { 215 NET_CORE=1, 216 NET_ETHER=2, 217 NET_802=3, 218 NET_UNIX=4, 219 NET_IPV4=5, 220 NET_IPX=6, 221 NET_ATALK=7, 222 NET_NETROM=8, 223 NET_AX25=9, 224 NET_BRIDGE=10, 225 NET_ROSE=11, 226 NET_IPV6=12, 227 NET_X25=13, 228 NET_TR=14, 229 NET_DECNET=15, 230 NET_ECONET=16, 231 NET_SCTP=17, 232 NET_LLC=18, 233 NET_NETFILTER=19, 234 NET_DCCP=20, 235 NET_IRDA=412, 236 }; 237 238 /* /proc/sys/kernel/random */ 239 enum 240 { 241 RANDOM_POOLSIZE=1, 242 RANDOM_ENTROPY_COUNT=2, 243 RANDOM_READ_THRESH=3, 244 RANDOM_WRITE_THRESH=4, 245 RANDOM_BOOT_ID=5, 246 RANDOM_UUID=6 247 }; 248 249 /* /proc/sys/kernel/pty */ 250 enum 251 { 252 PTY_MAX=1, 253 PTY_NR=2 254 }; 255 256 /* /proc/sys/bus/isa */ 257 enum 258 { 259 BUS_ISA_MEM_BASE=1, 260 BUS_ISA_PORT_BASE=2, 261 BUS_ISA_PORT_SHIFT=3 262 }; 263 264 /* /proc/sys/net/core */ 265 enum 266 { 267 NET_CORE_WMEM_MAX=1, 268 NET_CORE_RMEM_MAX=2, 269 NET_CORE_WMEM_DEFAULT=3, 270 NET_CORE_RMEM_DEFAULT=4, 271 /* was NET_CORE_DESTROY_DELAY */ 272 NET_CORE_MAX_BACKLOG=6, 273 NET_CORE_FASTROUTE=7, 274 NET_CORE_MSG_COST=8, 275 NET_CORE_MSG_BURST=9, 276 NET_CORE_OPTMEM_MAX=10, 277 NET_CORE_HOT_LIST_LENGTH=11, 278 NET_CORE_DIVERT_VERSION=12, 279 NET_CORE_NO_CONG_THRESH=13, 280 NET_CORE_NO_CONG=14, 281 NET_CORE_LO_CONG=15, 282 NET_CORE_MOD_CONG=16, 283 NET_CORE_DEV_WEIGHT=17, 284 NET_CORE_SOMAXCONN=18, 285 NET_CORE_BUDGET=19, 286 NET_CORE_AEVENT_ETIME=20, 287 NET_CORE_AEVENT_RSEQTH=21, 288 NET_CORE_WARNINGS=22, 289 }; 290 291 /* /proc/sys/net/ethernet */ 292 293 /* /proc/sys/net/802 */ 294 295 /* /proc/sys/net/unix */ 296 297 enum 298 { 299 NET_UNIX_DESTROY_DELAY=1, 300 NET_UNIX_DELETE_DELAY=2, 301 NET_UNIX_MAX_DGRAM_QLEN=3, 302 }; 303 304 /* /proc/sys/net/netfilter */ 305 enum 306 { 307 NET_NF_CONNTRACK_MAX=1, 308 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 309 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 310 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 311 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 312 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 313 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 314 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 315 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 316 NET_NF_CONNTRACK_UDP_TIMEOUT=10, 317 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 318 NET_NF_CONNTRACK_ICMP_TIMEOUT=12, 319 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13, 320 NET_NF_CONNTRACK_BUCKETS=14, 321 NET_NF_CONNTRACK_LOG_INVALID=15, 322 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 323 NET_NF_CONNTRACK_TCP_LOOSE=17, 324 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18, 325 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19, 326 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 327 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 328 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 329 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 330 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 331 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 332 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 333 NET_NF_CONNTRACK_COUNT=27, 334 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28, 335 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29, 336 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30, 337 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31, 338 NET_NF_CONNTRACK_CHECKSUM=32, 339 }; 340 341 /* /proc/sys/net/ipv4 */ 342 enum 343 { 344 /* v2.0 compatibile variables */ 345 NET_IPV4_FORWARD=8, 346 NET_IPV4_DYNADDR=9, 347 348 NET_IPV4_CONF=16, 349 NET_IPV4_NEIGH=17, 350 NET_IPV4_ROUTE=18, 351 NET_IPV4_FIB_HASH=19, 352 NET_IPV4_NETFILTER=20, 353 354 NET_IPV4_TCP_TIMESTAMPS=33, 355 NET_IPV4_TCP_WINDOW_SCALING=34, 356 NET_IPV4_TCP_SACK=35, 357 NET_IPV4_TCP_RETRANS_COLLAPSE=36, 358 NET_IPV4_DEFAULT_TTL=37, 359 NET_IPV4_AUTOCONFIG=38, 360 NET_IPV4_NO_PMTU_DISC=39, 361 NET_IPV4_TCP_SYN_RETRIES=40, 362 NET_IPV4_IPFRAG_HIGH_THRESH=41, 363 NET_IPV4_IPFRAG_LOW_THRESH=42, 364 NET_IPV4_IPFRAG_TIME=43, 365 NET_IPV4_TCP_MAX_KA_PROBES=44, 366 NET_IPV4_TCP_KEEPALIVE_TIME=45, 367 NET_IPV4_TCP_KEEPALIVE_PROBES=46, 368 NET_IPV4_TCP_RETRIES1=47, 369 NET_IPV4_TCP_RETRIES2=48, 370 NET_IPV4_TCP_FIN_TIMEOUT=49, 371 NET_IPV4_IP_MASQ_DEBUG=50, 372 NET_TCP_SYNCOOKIES=51, 373 NET_TCP_STDURG=52, 374 NET_TCP_RFC1337=53, 375 NET_TCP_SYN_TAILDROP=54, 376 NET_TCP_MAX_SYN_BACKLOG=55, 377 NET_IPV4_LOCAL_PORT_RANGE=56, 378 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, 379 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, 380 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, 381 NET_IPV4_ICMP_DESTUNREACH_RATE=60, 382 NET_IPV4_ICMP_TIMEEXCEED_RATE=61, 383 NET_IPV4_ICMP_PARAMPROB_RATE=62, 384 NET_IPV4_ICMP_ECHOREPLY_RATE=63, 385 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, 386 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, 387 NET_TCP_TW_RECYCLE=66, 388 NET_IPV4_ALWAYS_DEFRAG=67, 389 NET_IPV4_TCP_KEEPALIVE_INTVL=68, 390 NET_IPV4_INET_PEER_THRESHOLD=69, 391 NET_IPV4_INET_PEER_MINTTL=70, 392 NET_IPV4_INET_PEER_MAXTTL=71, 393 NET_IPV4_INET_PEER_GC_MINTIME=72, 394 NET_IPV4_INET_PEER_GC_MAXTIME=73, 395 NET_TCP_ORPHAN_RETRIES=74, 396 NET_TCP_ABORT_ON_OVERFLOW=75, 397 NET_TCP_SYNACK_RETRIES=76, 398 NET_TCP_MAX_ORPHANS=77, 399 NET_TCP_MAX_TW_BUCKETS=78, 400 NET_TCP_FACK=79, 401 NET_TCP_REORDERING=80, 402 NET_TCP_ECN=81, 403 NET_TCP_DSACK=82, 404 NET_TCP_MEM=83, 405 NET_TCP_WMEM=84, 406 NET_TCP_RMEM=85, 407 NET_TCP_APP_WIN=86, 408 NET_TCP_ADV_WIN_SCALE=87, 409 NET_IPV4_NONLOCAL_BIND=88, 410 NET_IPV4_ICMP_RATELIMIT=89, 411 NET_IPV4_ICMP_RATEMASK=90, 412 NET_TCP_TW_REUSE=91, 413 NET_TCP_FRTO=92, 414 NET_TCP_LOW_LATENCY=93, 415 NET_IPV4_IPFRAG_SECRET_INTERVAL=94, 416 NET_IPV4_IGMP_MAX_MSF=96, 417 NET_TCP_NO_METRICS_SAVE=97, 418 NET_TCP_DEFAULT_WIN_SCALE=105, 419 NET_TCP_MODERATE_RCVBUF=106, 420 NET_TCP_TSO_WIN_DIVISOR=107, 421 NET_TCP_BIC_BETA=108, 422 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109, 423 NET_TCP_CONG_CONTROL=110, 424 NET_TCP_ABC=111, 425 NET_IPV4_IPFRAG_MAX_DIST=112, 426 NET_TCP_MTU_PROBING=113, 427 NET_TCP_BASE_MSS=114, 428 NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115, 429 NET_TCP_DMA_COPYBREAK=116, 430 NET_TCP_SLOW_START_AFTER_IDLE=117, 431 NET_CIPSOV4_CACHE_ENABLE=118, 432 NET_CIPSOV4_CACHE_BUCKET_SIZE=119, 433 NET_CIPSOV4_RBM_OPTFMT=120, 434 NET_CIPSOV4_RBM_STRICTVALID=121, 435 NET_TCP_AVAIL_CONG_CONTROL=122, 436 NET_TCP_ALLOWED_CONG_CONTROL=123, 437 NET_TCP_MAX_SSTHRESH=124, 438 NET_TCP_FRTO_RESPONSE=125, 439 }; 440 441 enum { 442 NET_IPV4_ROUTE_FLUSH=1, 443 NET_IPV4_ROUTE_MIN_DELAY=2, 444 NET_IPV4_ROUTE_MAX_DELAY=3, 445 NET_IPV4_ROUTE_GC_THRESH=4, 446 NET_IPV4_ROUTE_MAX_SIZE=5, 447 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, 448 NET_IPV4_ROUTE_GC_TIMEOUT=7, 449 NET_IPV4_ROUTE_GC_INTERVAL=8, 450 NET_IPV4_ROUTE_REDIRECT_LOAD=9, 451 NET_IPV4_ROUTE_REDIRECT_NUMBER=10, 452 NET_IPV4_ROUTE_REDIRECT_SILENCE=11, 453 NET_IPV4_ROUTE_ERROR_COST=12, 454 NET_IPV4_ROUTE_ERROR_BURST=13, 455 NET_IPV4_ROUTE_GC_ELASTICITY=14, 456 NET_IPV4_ROUTE_MTU_EXPIRES=15, 457 NET_IPV4_ROUTE_MIN_PMTU=16, 458 NET_IPV4_ROUTE_MIN_ADVMSS=17, 459 NET_IPV4_ROUTE_SECRET_INTERVAL=18, 460 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19, 461 }; 462 463 enum 464 { 465 NET_PROTO_CONF_ALL=-2, 466 NET_PROTO_CONF_DEFAULT=-3 467 468 /* And device ifindices ... */ 469 }; 470 471 enum 472 { 473 NET_IPV4_CONF_FORWARDING=1, 474 NET_IPV4_CONF_MC_FORWARDING=2, 475 NET_IPV4_CONF_PROXY_ARP=3, 476 NET_IPV4_CONF_ACCEPT_REDIRECTS=4, 477 NET_IPV4_CONF_SECURE_REDIRECTS=5, 478 NET_IPV4_CONF_SEND_REDIRECTS=6, 479 NET_IPV4_CONF_SHARED_MEDIA=7, 480 NET_IPV4_CONF_RP_FILTER=8, 481 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, 482 NET_IPV4_CONF_BOOTP_RELAY=10, 483 NET_IPV4_CONF_LOG_MARTIANS=11, 484 NET_IPV4_CONF_TAG=12, 485 NET_IPV4_CONF_ARPFILTER=13, 486 NET_IPV4_CONF_MEDIUM_ID=14, 487 NET_IPV4_CONF_NOXFRM=15, 488 NET_IPV4_CONF_NOPOLICY=16, 489 NET_IPV4_CONF_FORCE_IGMP_VERSION=17, 490 NET_IPV4_CONF_ARP_ANNOUNCE=18, 491 NET_IPV4_CONF_ARP_IGNORE=19, 492 NET_IPV4_CONF_PROMOTE_SECONDARIES=20, 493 NET_IPV4_CONF_ARP_ACCEPT=21, 494 __NET_IPV4_CONF_MAX 495 }; 496 497 /* /proc/sys/net/ipv4/netfilter */ 498 enum 499 { 500 NET_IPV4_NF_CONNTRACK_MAX=1, 501 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 502 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 503 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 504 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 505 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 506 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 507 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 508 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 509 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, 510 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 511 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, 512 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, 513 NET_IPV4_NF_CONNTRACK_BUCKETS=14, 514 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15, 515 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 516 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17, 517 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18, 518 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19, 519 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 520 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 521 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 522 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 523 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 524 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 525 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 526 NET_IPV4_NF_CONNTRACK_COUNT=27, 527 NET_IPV4_NF_CONNTRACK_CHECKSUM=28, 528 }; 529 530 /* /proc/sys/net/ipv6 */ 531 enum { 532 NET_IPV6_CONF=16, 533 NET_IPV6_NEIGH=17, 534 NET_IPV6_ROUTE=18, 535 NET_IPV6_ICMP=19, 536 NET_IPV6_BINDV6ONLY=20, 537 NET_IPV6_IP6FRAG_HIGH_THRESH=21, 538 NET_IPV6_IP6FRAG_LOW_THRESH=22, 539 NET_IPV6_IP6FRAG_TIME=23, 540 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24, 541 NET_IPV6_MLD_MAX_MSF=25, 542 }; 543 544 enum { 545 NET_IPV6_ROUTE_FLUSH=1, 546 NET_IPV6_ROUTE_GC_THRESH=2, 547 NET_IPV6_ROUTE_MAX_SIZE=3, 548 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, 549 NET_IPV6_ROUTE_GC_TIMEOUT=5, 550 NET_IPV6_ROUTE_GC_INTERVAL=6, 551 NET_IPV6_ROUTE_GC_ELASTICITY=7, 552 NET_IPV6_ROUTE_MTU_EXPIRES=8, 553 NET_IPV6_ROUTE_MIN_ADVMSS=9, 554 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10 555 }; 556 557 enum { 558 NET_IPV6_FORWARDING=1, 559 NET_IPV6_HOP_LIMIT=2, 560 NET_IPV6_MTU=3, 561 NET_IPV6_ACCEPT_RA=4, 562 NET_IPV6_ACCEPT_REDIRECTS=5, 563 NET_IPV6_AUTOCONF=6, 564 NET_IPV6_DAD_TRANSMITS=7, 565 NET_IPV6_RTR_SOLICITS=8, 566 NET_IPV6_RTR_SOLICIT_INTERVAL=9, 567 NET_IPV6_RTR_SOLICIT_DELAY=10, 568 NET_IPV6_USE_TEMPADDR=11, 569 NET_IPV6_TEMP_VALID_LFT=12, 570 NET_IPV6_TEMP_PREFERED_LFT=13, 571 NET_IPV6_REGEN_MAX_RETRY=14, 572 NET_IPV6_MAX_DESYNC_FACTOR=15, 573 NET_IPV6_MAX_ADDRESSES=16, 574 NET_IPV6_FORCE_MLD_VERSION=17, 575 NET_IPV6_ACCEPT_RA_DEFRTR=18, 576 NET_IPV6_ACCEPT_RA_PINFO=19, 577 NET_IPV6_ACCEPT_RA_RTR_PREF=20, 578 NET_IPV6_RTR_PROBE_INTERVAL=21, 579 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22, 580 NET_IPV6_PROXY_NDP=23, 581 NET_IPV6_ACCEPT_SOURCE_ROUTE=25, 582 __NET_IPV6_MAX 583 }; 584 585 /* /proc/sys/net/ipv6/icmp */ 586 enum { 587 NET_IPV6_ICMP_RATELIMIT=1 588 }; 589 590 /* /proc/sys/net/<protocol>/neigh/<dev> */ 591 enum { 592 NET_NEIGH_MCAST_SOLICIT=1, 593 NET_NEIGH_UCAST_SOLICIT=2, 594 NET_NEIGH_APP_SOLICIT=3, 595 NET_NEIGH_RETRANS_TIME=4, 596 NET_NEIGH_REACHABLE_TIME=5, 597 NET_NEIGH_DELAY_PROBE_TIME=6, 598 NET_NEIGH_GC_STALE_TIME=7, 599 NET_NEIGH_UNRES_QLEN=8, 600 NET_NEIGH_PROXY_QLEN=9, 601 NET_NEIGH_ANYCAST_DELAY=10, 602 NET_NEIGH_PROXY_DELAY=11, 603 NET_NEIGH_LOCKTIME=12, 604 NET_NEIGH_GC_INTERVAL=13, 605 NET_NEIGH_GC_THRESH1=14, 606 NET_NEIGH_GC_THRESH2=15, 607 NET_NEIGH_GC_THRESH3=16, 608 NET_NEIGH_RETRANS_TIME_MS=17, 609 NET_NEIGH_REACHABLE_TIME_MS=18, 610 __NET_NEIGH_MAX 611 }; 612 613 /* /proc/sys/net/dccp */ 614 enum { 615 NET_DCCP_DEFAULT=1, 616 }; 617 618 /* /proc/sys/net/ipx */ 619 enum { 620 NET_IPX_PPROP_BROADCASTING=1, 621 NET_IPX_FORWARDING=2 622 }; 623 624 /* /proc/sys/net/llc */ 625 enum { 626 NET_LLC2=1, 627 NET_LLC_STATION=2, 628 }; 629 630 /* /proc/sys/net/llc/llc2 */ 631 enum { 632 NET_LLC2_TIMEOUT=1, 633 }; 634 635 /* /proc/sys/net/llc/station */ 636 enum { 637 NET_LLC_STATION_ACK_TIMEOUT=1, 638 }; 639 640 /* /proc/sys/net/llc/llc2/timeout */ 641 enum { 642 NET_LLC2_ACK_TIMEOUT=1, 643 NET_LLC2_P_TIMEOUT=2, 644 NET_LLC2_REJ_TIMEOUT=3, 645 NET_LLC2_BUSY_TIMEOUT=4, 646 }; 647 648 /* /proc/sys/net/appletalk */ 649 enum { 650 NET_ATALK_AARP_EXPIRY_TIME=1, 651 NET_ATALK_AARP_TICK_TIME=2, 652 NET_ATALK_AARP_RETRANSMIT_LIMIT=3, 653 NET_ATALK_AARP_RESOLVE_TIME=4 654 }; 655 656 657 /* /proc/sys/net/netrom */ 658 enum { 659 NET_NETROM_DEFAULT_PATH_QUALITY=1, 660 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, 661 NET_NETROM_NETWORK_TTL_INITIALISER=3, 662 NET_NETROM_TRANSPORT_TIMEOUT=4, 663 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, 664 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, 665 NET_NETROM_TRANSPORT_BUSY_DELAY=7, 666 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, 667 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, 668 NET_NETROM_ROUTING_CONTROL=10, 669 NET_NETROM_LINK_FAILS_COUNT=11, 670 NET_NETROM_RESET=12 671 }; 672 673 /* /proc/sys/net/ax25 */ 674 enum { 675 NET_AX25_IP_DEFAULT_MODE=1, 676 NET_AX25_DEFAULT_MODE=2, 677 NET_AX25_BACKOFF_TYPE=3, 678 NET_AX25_CONNECT_MODE=4, 679 NET_AX25_STANDARD_WINDOW=5, 680 NET_AX25_EXTENDED_WINDOW=6, 681 NET_AX25_T1_TIMEOUT=7, 682 NET_AX25_T2_TIMEOUT=8, 683 NET_AX25_T3_TIMEOUT=9, 684 NET_AX25_IDLE_TIMEOUT=10, 685 NET_AX25_N2=11, 686 NET_AX25_PACLEN=12, 687 NET_AX25_PROTOCOL=13, 688 NET_AX25_DAMA_SLAVE_TIMEOUT=14 689 }; 690 691 /* /proc/sys/net/rose */ 692 enum { 693 NET_ROSE_RESTART_REQUEST_TIMEOUT=1, 694 NET_ROSE_CALL_REQUEST_TIMEOUT=2, 695 NET_ROSE_RESET_REQUEST_TIMEOUT=3, 696 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, 697 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, 698 NET_ROSE_ROUTING_CONTROL=6, 699 NET_ROSE_LINK_FAIL_TIMEOUT=7, 700 NET_ROSE_MAX_VCS=8, 701 NET_ROSE_WINDOW_SIZE=9, 702 NET_ROSE_NO_ACTIVITY_TIMEOUT=10 703 }; 704 705 /* /proc/sys/net/x25 */ 706 enum { 707 NET_X25_RESTART_REQUEST_TIMEOUT=1, 708 NET_X25_CALL_REQUEST_TIMEOUT=2, 709 NET_X25_RESET_REQUEST_TIMEOUT=3, 710 NET_X25_CLEAR_REQUEST_TIMEOUT=4, 711 NET_X25_ACK_HOLD_BACK_TIMEOUT=5, 712 NET_X25_FORWARD=6 713 }; 714 715 /* /proc/sys/net/token-ring */ 716 enum 717 { 718 NET_TR_RIF_TIMEOUT=1 719 }; 720 721 /* /proc/sys/net/decnet/ */ 722 enum { 723 NET_DECNET_NODE_TYPE = 1, 724 NET_DECNET_NODE_ADDRESS = 2, 725 NET_DECNET_NODE_NAME = 3, 726 NET_DECNET_DEFAULT_DEVICE = 4, 727 NET_DECNET_TIME_WAIT = 5, 728 NET_DECNET_DN_COUNT = 6, 729 NET_DECNET_DI_COUNT = 7, 730 NET_DECNET_DR_COUNT = 8, 731 NET_DECNET_DST_GC_INTERVAL = 9, 732 NET_DECNET_CONF = 10, 733 NET_DECNET_NO_FC_MAX_CWND = 11, 734 NET_DECNET_MEM = 12, 735 NET_DECNET_RMEM = 13, 736 NET_DECNET_WMEM = 14, 737 NET_DECNET_DEBUG_LEVEL = 255 738 }; 739 740 /* /proc/sys/net/decnet/conf/<dev> */ 741 enum { 742 NET_DECNET_CONF_LOOPBACK = -2, 743 NET_DECNET_CONF_DDCMP = -3, 744 NET_DECNET_CONF_PPP = -4, 745 NET_DECNET_CONF_X25 = -5, 746 NET_DECNET_CONF_GRE = -6, 747 NET_DECNET_CONF_ETHER = -7 748 749 /* ... and ifindex of devices */ 750 }; 751 752 /* /proc/sys/net/decnet/conf/<dev>/ */ 753 enum { 754 NET_DECNET_CONF_DEV_PRIORITY = 1, 755 NET_DECNET_CONF_DEV_T1 = 2, 756 NET_DECNET_CONF_DEV_T2 = 3, 757 NET_DECNET_CONF_DEV_T3 = 4, 758 NET_DECNET_CONF_DEV_FORWARDING = 5, 759 NET_DECNET_CONF_DEV_BLKSIZE = 6, 760 NET_DECNET_CONF_DEV_STATE = 7 761 }; 762 763 /* /proc/sys/net/sctp */ 764 enum { 765 NET_SCTP_RTO_INITIAL = 1, 766 NET_SCTP_RTO_MIN = 2, 767 NET_SCTP_RTO_MAX = 3, 768 NET_SCTP_RTO_ALPHA = 4, 769 NET_SCTP_RTO_BETA = 5, 770 NET_SCTP_VALID_COOKIE_LIFE = 6, 771 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, 772 NET_SCTP_PATH_MAX_RETRANS = 8, 773 NET_SCTP_MAX_INIT_RETRANSMITS = 9, 774 NET_SCTP_HB_INTERVAL = 10, 775 NET_SCTP_PRESERVE_ENABLE = 11, 776 NET_SCTP_MAX_BURST = 12, 777 NET_SCTP_ADDIP_ENABLE = 13, 778 NET_SCTP_PRSCTP_ENABLE = 14, 779 NET_SCTP_SNDBUF_POLICY = 15, 780 NET_SCTP_SACK_TIMEOUT = 16, 781 NET_SCTP_RCVBUF_POLICY = 17, 782 }; 783 784 /* /proc/sys/net/bridge */ 785 enum { 786 NET_BRIDGE_NF_CALL_ARPTABLES = 1, 787 NET_BRIDGE_NF_CALL_IPTABLES = 2, 788 NET_BRIDGE_NF_CALL_IP6TABLES = 3, 789 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, 790 NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5, 791 }; 792 793 /* proc/sys/net/irda */ 794 enum { 795 NET_IRDA_DISCOVERY=1, 796 NET_IRDA_DEVNAME=2, 797 NET_IRDA_DEBUG=3, 798 NET_IRDA_FAST_POLL=4, 799 NET_IRDA_DISCOVERY_SLOTS=5, 800 NET_IRDA_DISCOVERY_TIMEOUT=6, 801 NET_IRDA_SLOT_TIMEOUT=7, 802 NET_IRDA_MAX_BAUD_RATE=8, 803 NET_IRDA_MIN_TX_TURN_TIME=9, 804 NET_IRDA_MAX_TX_DATA_SIZE=10, 805 NET_IRDA_MAX_TX_WINDOW=11, 806 NET_IRDA_MAX_NOREPLY_TIME=12, 807 NET_IRDA_WARN_NOREPLY_TIME=13, 808 NET_IRDA_LAP_KEEPALIVE_TIME=14, 809 }; 810 811 812 /* CTL_FS names: */ 813 enum 814 { 815 FS_NRINODE=1, /* int:current number of allocated inodes */ 816 FS_STATINODE=2, 817 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ 818 FS_NRDQUOT=4, /* int:current number of allocated dquots */ 819 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */ 820 FS_NRFILE=6, /* int:current number of allocated filedescriptors */ 821 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ 822 FS_DENTRY=8, 823 FS_NRSUPER=9, /* int:current number of allocated super_blocks */ 824 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ 825 FS_OVERFLOWUID=11, /* int: overflow UID */ 826 FS_OVERFLOWGID=12, /* int: overflow GID */ 827 FS_LEASES=13, /* int: leases enabled */ 828 FS_DIR_NOTIFY=14, /* int: directory notification enabled */ 829 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ 830 FS_DQSTATS=16, /* disc quota usage statistics and control */ 831 FS_XFS=17, /* struct: control xfs parameters */ 832 FS_AIO_NR=18, /* current system-wide number of aio requests */ 833 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */ 834 FS_INOTIFY=20, /* inotify submenu */ 835 FS_OCFS2=988, /* ocfs2 */ 836 }; 837 838 /* /proc/sys/fs/quota/ */ 839 enum { 840 FS_DQ_LOOKUPS = 1, 841 FS_DQ_DROPS = 2, 842 FS_DQ_READS = 3, 843 FS_DQ_WRITES = 4, 844 FS_DQ_CACHE_HITS = 5, 845 FS_DQ_ALLOCATED = 6, 846 FS_DQ_FREE = 7, 847 FS_DQ_SYNCS = 8, 848 FS_DQ_WARNINGS = 9, 849 }; 850 851 /* CTL_DEBUG names: */ 852 853 /* CTL_DEV names: */ 854 enum { 855 DEV_CDROM=1, 856 DEV_HWMON=2, 857 DEV_PARPORT=3, 858 DEV_RAID=4, 859 DEV_MAC_HID=5, 860 DEV_SCSI=6, 861 DEV_IPMI=7, 862 }; 863 864 /* /proc/sys/dev/cdrom */ 865 enum { 866 DEV_CDROM_INFO=1, 867 DEV_CDROM_AUTOCLOSE=2, 868 DEV_CDROM_AUTOEJECT=3, 869 DEV_CDROM_DEBUG=4, 870 DEV_CDROM_LOCK=5, 871 DEV_CDROM_CHECK_MEDIA=6 872 }; 873 874 /* /proc/sys/dev/parport */ 875 enum { 876 DEV_PARPORT_DEFAULT=-3 877 }; 878 879 /* /proc/sys/dev/raid */ 880 enum { 881 DEV_RAID_SPEED_LIMIT_MIN=1, 882 DEV_RAID_SPEED_LIMIT_MAX=2 883 }; 884 885 /* /proc/sys/dev/parport/default */ 886 enum { 887 DEV_PARPORT_DEFAULT_TIMESLICE=1, 888 DEV_PARPORT_DEFAULT_SPINTIME=2 889 }; 890 891 /* /proc/sys/dev/parport/parport n */ 892 enum { 893 DEV_PARPORT_SPINTIME=1, 894 DEV_PARPORT_BASE_ADDR=2, 895 DEV_PARPORT_IRQ=3, 896 DEV_PARPORT_DMA=4, 897 DEV_PARPORT_MODES=5, 898 DEV_PARPORT_DEVICES=6, 899 DEV_PARPORT_AUTOPROBE=16 900 }; 901 902 /* /proc/sys/dev/parport/parport n/devices/ */ 903 enum { 904 DEV_PARPORT_DEVICES_ACTIVE=-3, 905 }; 906 907 /* /proc/sys/dev/parport/parport n/devices/device n */ 908 enum { 909 DEV_PARPORT_DEVICE_TIMESLICE=1, 910 }; 911 912 /* /proc/sys/dev/mac_hid */ 913 enum { 914 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, 915 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, 916 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, 917 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, 918 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, 919 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 920 }; 921 922 /* /proc/sys/dev/scsi */ 923 enum { 924 DEV_SCSI_LOGGING_LEVEL=1, 925 }; 926 927 /* /proc/sys/dev/ipmi */ 928 enum { 929 DEV_IPMI_POWEROFF_POWERCYCLE=1, 930 }; 931 932 /* /proc/sys/abi */ 933 enum 934 { 935 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ 936 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ 937 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ 938 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ 939 ABI_TRACE=5, /* tracing flags */ 940 ABI_FAKE_UTSNAME=6, /* fake target utsname information */ 941 }; 942 943 #ifdef __KERNEL__ 944 #include <linux/list.h> 945 946 /* For the /proc/sys support */ 947 struct ctl_table; 948 extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev); 949 extern void sysctl_head_finish(struct ctl_table_header *prev); 950 extern int sysctl_perm(struct ctl_table *table, int op); 951 952 typedef struct ctl_table ctl_table; 953 954 typedef int ctl_handler (struct ctl_table *table, int __user *name, int nlen, 955 void __user *oldval, size_t __user *oldlenp, 956 void __user *newval, size_t newlen); 957 958 typedef int proc_handler (struct ctl_table *ctl, int write, struct file * filp, 959 void __user *buffer, size_t *lenp, loff_t *ppos); 960 961 extern int proc_dostring(struct ctl_table *, int, struct file *, 962 void __user *, size_t *, loff_t *); 963 extern int proc_dointvec(struct ctl_table *, int, struct file *, 964 void __user *, size_t *, loff_t *); 965 extern int proc_dointvec_bset(struct ctl_table *, int, struct file *, 966 void __user *, size_t *, loff_t *); 967 extern int proc_dointvec_minmax(struct ctl_table *, int, struct file *, 968 void __user *, size_t *, loff_t *); 969 extern int proc_dointvec_jiffies(struct ctl_table *, int, struct file *, 970 void __user *, size_t *, loff_t *); 971 extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, struct file *, 972 void __user *, size_t *, loff_t *); 973 extern int proc_dointvec_ms_jiffies(struct ctl_table *, int, struct file *, 974 void __user *, size_t *, loff_t *); 975 extern int proc_doulongvec_minmax(struct ctl_table *, int, struct file *, 976 void __user *, size_t *, loff_t *); 977 extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int, 978 struct file *, void __user *, size_t *, loff_t *); 979 980 extern int do_sysctl (int __user *name, int nlen, 981 void __user *oldval, size_t __user *oldlenp, 982 void __user *newval, size_t newlen); 983 984 extern int do_sysctl_strategy (struct ctl_table *table, 985 int __user *name, int nlen, 986 void __user *oldval, size_t __user *oldlenp, 987 void __user *newval, size_t newlen); 988 989 extern ctl_handler sysctl_data; 990 extern ctl_handler sysctl_string; 991 extern ctl_handler sysctl_intvec; 992 extern ctl_handler sysctl_jiffies; 993 extern ctl_handler sysctl_ms_jiffies; 994 995 996 /* 997 * Register a set of sysctl names by calling register_sysctl_table 998 * with an initialised array of struct ctl_table's. An entry with zero 999 * ctl_name and NULL procname terminates the table. table->de will be 1000 * set up by the registration and need not be initialised in advance. 1001 * 1002 * sysctl names can be mirrored automatically under /proc/sys. The 1003 * procname supplied controls /proc naming. 1004 * 1005 * The table's mode will be honoured both for sys_sysctl(2) and 1006 * proc-fs access. 1007 * 1008 * Leaf nodes in the sysctl tree will be represented by a single file 1009 * under /proc; non-leaf nodes will be represented by directories. A 1010 * null procname disables /proc mirroring at this node. 1011 * 1012 * sysctl entries with a zero ctl_name will not be available through 1013 * the binary sysctl interface. 1014 * 1015 * sysctl(2) can automatically manage read and write requests through 1016 * the sysctl table. The data and maxlen fields of the ctl_table 1017 * struct enable minimal validation of the values being written to be 1018 * performed, and the mode field allows minimal authentication. 1019 * 1020 * More sophisticated management can be enabled by the provision of a 1021 * strategy routine with the table entry. This will be called before 1022 * any automatic read or write of the data is performed. 1023 * 1024 * The strategy routine may return: 1025 * <0: Error occurred (error is passed to user process) 1026 * 0: OK - proceed with automatic read or write. 1027 * >0: OK - read or write has been done by the strategy routine, so 1028 * return immediately. 1029 * 1030 * There must be a proc_handler routine for any terminal nodes 1031 * mirrored under /proc/sys (non-terminals are handled by a built-in 1032 * directory handler). Several default handlers are available to 1033 * cover common cases. 1034 */ 1035 1036 /* A sysctl table is an array of struct ctl_table: */ 1037 struct ctl_table 1038 { 1039 int ctl_name; /* Binary ID */ 1040 const char *procname; /* Text ID for /proc/sys, or zero */ 1041 void *data; 1042 int maxlen; 1043 mode_t mode; 1044 struct ctl_table *child; 1045 struct ctl_table *parent; /* Automatically set */ 1046 proc_handler *proc_handler; /* Callback for text formatting */ 1047 ctl_handler *strategy; /* Callback function for all r/w */ 1048 void *extra1; 1049 void *extra2; 1050 }; 1051 1052 /* struct ctl_table_header is used to maintain dynamic lists of 1053 struct ctl_table trees. */ 1054 struct ctl_table_header 1055 { 1056 struct ctl_table *ctl_table; 1057 struct list_head ctl_entry; 1058 int used; 1059 struct completion *unregistering; 1060 }; 1061 1062 struct ctl_table_header *register_sysctl_table(struct ctl_table * table); 1063 1064 void unregister_sysctl_table(struct ctl_table_header * table); 1065 int sysctl_check_table(struct ctl_table *table); 1066 1067 #else /* __KERNEL__ */ 1068 1069 #endif /* __KERNEL__ */ 1070 1071 #endif /* _LINUX_SYSCTL_H */ 1072