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 **************************************************************** 19 **************************************************************** 20 */ 21 22 #ifndef _LINUX_SYSCTL_H 23 #define _LINUX_SYSCTL_H 24 25 #include <linux/kernel.h> 26 #include <linux/types.h> 27 #include <linux/compiler.h> 28 29 struct completion; 30 31 #define CTL_MAXNAME 10 /* how many path components do we allow in a 32 call to sysctl? In other words, what is 33 the largest acceptable value for the nlen 34 member of a struct __sysctl_args to have? */ 35 36 struct __sysctl_args { 37 int __user *name; 38 int nlen; 39 void __user *oldval; 40 size_t __user *oldlenp; 41 void __user *newval; 42 size_t newlen; 43 unsigned long __unused[4]; 44 }; 45 46 /* Define sysctl names first */ 47 48 /* Top-level names: */ 49 50 enum 51 { 52 CTL_KERN=1, /* General kernel info and control */ 53 CTL_VM=2, /* VM management */ 54 CTL_NET=3, /* Networking */ 55 CTL_PROC=4, /* removal breaks strace(1) compilation */ 56 CTL_FS=5, /* Filesystems */ 57 CTL_DEBUG=6, /* Debugging */ 58 CTL_DEV=7, /* Devices */ 59 CTL_BUS=8, /* Busses */ 60 CTL_ABI=9, /* Binary emulation */ 61 CTL_CPU=10, /* CPU stuff (speed scaling, etc) */ 62 CTL_ARLAN=254, /* arlan wireless driver */ 63 CTL_S390DBF=5677, /* s390 debug */ 64 CTL_SUNRPC=7249, /* sunrpc debug */ 65 CTL_PM=9899, /* frv power management */ 66 CTL_FRV=9898, /* frv specific sysctls */ 67 }; 68 69 /* CTL_BUS names: */ 70 enum 71 { 72 CTL_BUS_ISA=1 /* ISA */ 73 }; 74 75 /* /proc/sys/fs/inotify/ */ 76 enum 77 { 78 INOTIFY_MAX_USER_INSTANCES=1, /* max instances per user */ 79 INOTIFY_MAX_USER_WATCHES=2, /* max watches per user */ 80 INOTIFY_MAX_QUEUED_EVENTS=3 /* max queued events per instance */ 81 }; 82 83 /* CTL_KERN names: */ 84 enum 85 { 86 KERN_OSTYPE=1, /* string: system version */ 87 KERN_OSRELEASE=2, /* string: system release */ 88 KERN_OSREV=3, /* int: system revision */ 89 KERN_VERSION=4, /* string: compile time info */ 90 KERN_SECUREMASK=5, /* struct: maximum rights mask */ 91 KERN_PROF=6, /* table: profiling information */ 92 KERN_NODENAME=7, /* string: hostname */ 93 KERN_DOMAINNAME=8, /* string: domainname */ 94 95 KERN_PANIC=15, /* int: panic timeout */ 96 KERN_REALROOTDEV=16, /* real root device to mount after initrd */ 97 98 KERN_SPARC_REBOOT=21, /* reboot command on Sparc */ 99 KERN_CTLALTDEL=22, /* int: allow ctl-alt-del to reboot */ 100 KERN_PRINTK=23, /* struct: control printk logging parameters */ 101 KERN_NAMETRANS=24, /* Name translation */ 102 KERN_PPC_HTABRECLAIM=25, /* turn htab reclaimation on/off on PPC */ 103 KERN_PPC_ZEROPAGED=26, /* turn idle page zeroing on/off on PPC */ 104 KERN_PPC_POWERSAVE_NAP=27, /* use nap mode for power saving */ 105 KERN_MODPROBE=28, /* string: modprobe path */ 106 KERN_SG_BIG_BUFF=29, /* int: sg driver reserved buffer size */ 107 KERN_ACCT=30, /* BSD process accounting parameters */ 108 KERN_PPC_L2CR=31, /* l2cr register on PPC */ 109 110 KERN_RTSIGNR=32, /* Number of rt sigs queued */ 111 KERN_RTSIGMAX=33, /* Max queuable */ 112 113 KERN_SHMMAX=34, /* long: Maximum shared memory segment */ 114 KERN_MSGMAX=35, /* int: Maximum size of a messege */ 115 KERN_MSGMNB=36, /* int: Maximum message queue size */ 116 KERN_MSGPOOL=37, /* int: Maximum system message pool size */ 117 KERN_SYSRQ=38, /* int: Sysreq enable */ 118 KERN_MAX_THREADS=39, /* int: Maximum nr of threads in the system */ 119 KERN_RANDOM=40, /* Random driver */ 120 KERN_SHMALL=41, /* int: Maximum size of shared memory */ 121 KERN_MSGMNI=42, /* int: msg queue identifiers */ 122 KERN_SEM=43, /* struct: sysv semaphore limits */ 123 KERN_SPARC_STOP_A=44, /* int: Sparc Stop-A enable */ 124 KERN_SHMMNI=45, /* int: shm array identifiers */ 125 KERN_OVERFLOWUID=46, /* int: overflow UID */ 126 KERN_OVERFLOWGID=47, /* int: overflow GID */ 127 KERN_SHMPATH=48, /* string: path to shm fs */ 128 KERN_HOTPLUG=49, /* string: path to uevent helper (deprecated) */ 129 KERN_IEEE_EMULATION_WARNINGS=50, /* int: unimplemented ieee instructions */ 130 KERN_S390_USER_DEBUG_LOGGING=51, /* int: dumps of user faults */ 131 KERN_CORE_USES_PID=52, /* int: use core or core.%pid */ 132 KERN_TAINTED=53, /* int: various kernel tainted flags */ 133 KERN_CADPID=54, /* int: PID of the process to notify on CAD */ 134 KERN_PIDMAX=55, /* int: PID # limit */ 135 KERN_CORE_PATTERN=56, /* string: pattern for core-file names */ 136 KERN_PANIC_ON_OOPS=57, /* int: whether we will panic on an oops */ 137 KERN_HPPA_PWRSW=58, /* int: hppa soft-power enable */ 138 KERN_HPPA_UNALIGNED=59, /* int: hppa unaligned-trap enable */ 139 KERN_PRINTK_RATELIMIT=60, /* int: tune printk ratelimiting */ 140 KERN_PRINTK_RATELIMIT_BURST=61, /* int: tune printk ratelimiting */ 141 KERN_PTY=62, /* dir: pty driver */ 142 KERN_NGROUPS_MAX=63, /* int: NGROUPS_MAX */ 143 KERN_SPARC_SCONS_PWROFF=64, /* int: serial console power-off halt */ 144 KERN_HZ_TIMER=65, /* int: hz timer on or off */ 145 KERN_UNKNOWN_NMI_PANIC=66, /* int: unknown nmi panic flag */ 146 KERN_BOOTLOADER_TYPE=67, /* int: boot loader type */ 147 KERN_RANDOMIZE=68, /* int: randomize virtual address space */ 148 KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */ 149 KERN_SPIN_RETRY=70, /* int: number of spinlock retries */ 150 KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */ 151 KERN_IA64_UNALIGNED=72, /* int: ia64 unaligned userland trap enable */ 152 KERN_COMPAT_LOG=73, /* int: print compat layer messages */ 153 KERN_MAX_LOCK_DEPTH=74, /* int: rtmutex's maximum lock depth */ 154 KERN_NMI_WATCHDOG=75, /* int: enable/disable nmi watchdog */ 155 KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */ 156 }; 157 158 159 160 /* CTL_VM names: */ 161 enum 162 { 163 VM_UNUSED1=1, /* was: struct: Set vm swapping control */ 164 VM_UNUSED2=2, /* was; int: Linear or sqrt() swapout for hogs */ 165 VM_UNUSED3=3, /* was: struct: Set free page thresholds */ 166 VM_UNUSED4=4, /* Spare */ 167 VM_OVERCOMMIT_MEMORY=5, /* Turn off the virtual memory safety limit */ 168 VM_UNUSED5=6, /* was: struct: Set buffer memory thresholds */ 169 VM_UNUSED7=7, /* was: struct: Set cache memory thresholds */ 170 VM_UNUSED8=8, /* was: struct: Control kswapd behaviour */ 171 VM_UNUSED9=9, /* was: struct: Set page table cache parameters */ 172 VM_PAGE_CLUSTER=10, /* int: set number of pages to swap together */ 173 VM_DIRTY_BACKGROUND=11, /* dirty_background_ratio */ 174 VM_DIRTY_RATIO=12, /* dirty_ratio */ 175 VM_DIRTY_WB_CS=13, /* dirty_writeback_centisecs */ 176 VM_DIRTY_EXPIRE_CS=14, /* dirty_expire_centisecs */ 177 VM_NR_PDFLUSH_THREADS=15, /* nr_pdflush_threads */ 178 VM_OVERCOMMIT_RATIO=16, /* percent of RAM to allow overcommit in */ 179 VM_PAGEBUF=17, /* struct: Control pagebuf parameters */ 180 VM_HUGETLB_PAGES=18, /* int: Number of available Huge Pages */ 181 VM_SWAPPINESS=19, /* Tendency to steal mapped memory */ 182 VM_LOWMEM_RESERVE_RATIO=20,/* reservation ratio for lower memory zones */ 183 VM_MIN_FREE_KBYTES=21, /* Minimum free kilobytes to maintain */ 184 VM_MAX_MAP_COUNT=22, /* int: Maximum number of mmaps/address-space */ 185 VM_LAPTOP_MODE=23, /* vm laptop mode */ 186 VM_BLOCK_DUMP=24, /* block dump mode */ 187 VM_HUGETLB_GROUP=25, /* permitted hugetlb group */ 188 VM_VFS_CACHE_PRESSURE=26, /* dcache/icache reclaim pressure */ 189 VM_LEGACY_VA_LAYOUT=27, /* legacy/compatibility virtual address space layout */ 190 VM_SWAP_TOKEN_TIMEOUT=28, /* default time for token time out */ 191 VM_DROP_PAGECACHE=29, /* int: nuke lots of pagecache */ 192 VM_PERCPU_PAGELIST_FRACTION=30,/* int: fraction of pages in each percpu_pagelist */ 193 VM_ZONE_RECLAIM_MODE=31, /* reclaim local zone memory before going off node */ 194 VM_MIN_UNMAPPED=32, /* Set min percent of unmapped pages */ 195 VM_PANIC_ON_OOM=33, /* panic at out-of-memory */ 196 VM_VDSO_ENABLED=34, /* map VDSO into new processes? */ 197 VM_MIN_SLAB=35, /* Percent pages ignored by zone reclaim */ 198 }; 199 200 201 /* CTL_NET names: */ 202 enum 203 { 204 NET_CORE=1, 205 NET_ETHER=2, 206 NET_802=3, 207 NET_UNIX=4, 208 NET_IPV4=5, 209 NET_IPX=6, 210 NET_ATALK=7, 211 NET_NETROM=8, 212 NET_AX25=9, 213 NET_BRIDGE=10, 214 NET_ROSE=11, 215 NET_IPV6=12, 216 NET_X25=13, 217 NET_TR=14, 218 NET_DECNET=15, 219 NET_ECONET=16, 220 NET_SCTP=17, 221 NET_LLC=18, 222 NET_NETFILTER=19, 223 NET_DCCP=20, 224 NET_IRDA=412, 225 }; 226 227 /* /proc/sys/kernel/random */ 228 enum 229 { 230 RANDOM_POOLSIZE=1, 231 RANDOM_ENTROPY_COUNT=2, 232 RANDOM_READ_THRESH=3, 233 RANDOM_WRITE_THRESH=4, 234 RANDOM_BOOT_ID=5, 235 RANDOM_UUID=6 236 }; 237 238 /* /proc/sys/kernel/pty */ 239 enum 240 { 241 PTY_MAX=1, 242 PTY_NR=2 243 }; 244 245 /* /proc/sys/bus/isa */ 246 enum 247 { 248 BUS_ISA_MEM_BASE=1, 249 BUS_ISA_PORT_BASE=2, 250 BUS_ISA_PORT_SHIFT=3 251 }; 252 253 /* /proc/sys/net/core */ 254 enum 255 { 256 NET_CORE_WMEM_MAX=1, 257 NET_CORE_RMEM_MAX=2, 258 NET_CORE_WMEM_DEFAULT=3, 259 NET_CORE_RMEM_DEFAULT=4, 260 /* was NET_CORE_DESTROY_DELAY */ 261 NET_CORE_MAX_BACKLOG=6, 262 NET_CORE_FASTROUTE=7, 263 NET_CORE_MSG_COST=8, 264 NET_CORE_MSG_BURST=9, 265 NET_CORE_OPTMEM_MAX=10, 266 NET_CORE_HOT_LIST_LENGTH=11, 267 NET_CORE_DIVERT_VERSION=12, 268 NET_CORE_NO_CONG_THRESH=13, 269 NET_CORE_NO_CONG=14, 270 NET_CORE_LO_CONG=15, 271 NET_CORE_MOD_CONG=16, 272 NET_CORE_DEV_WEIGHT=17, 273 NET_CORE_SOMAXCONN=18, 274 NET_CORE_BUDGET=19, 275 NET_CORE_AEVENT_ETIME=20, 276 NET_CORE_AEVENT_RSEQTH=21, 277 NET_CORE_WARNINGS=22, 278 }; 279 280 /* /proc/sys/net/ethernet */ 281 282 /* /proc/sys/net/802 */ 283 284 /* /proc/sys/net/unix */ 285 286 enum 287 { 288 NET_UNIX_DESTROY_DELAY=1, 289 NET_UNIX_DELETE_DELAY=2, 290 NET_UNIX_MAX_DGRAM_QLEN=3, 291 }; 292 293 /* /proc/sys/net/netfilter */ 294 enum 295 { 296 NET_NF_CONNTRACK_MAX=1, 297 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 298 NET_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 299 NET_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 300 NET_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 301 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 302 NET_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 303 NET_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 304 NET_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 305 NET_NF_CONNTRACK_UDP_TIMEOUT=10, 306 NET_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 307 NET_NF_CONNTRACK_ICMP_TIMEOUT=12, 308 NET_NF_CONNTRACK_GENERIC_TIMEOUT=13, 309 NET_NF_CONNTRACK_BUCKETS=14, 310 NET_NF_CONNTRACK_LOG_INVALID=15, 311 NET_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 312 NET_NF_CONNTRACK_TCP_LOOSE=17, 313 NET_NF_CONNTRACK_TCP_BE_LIBERAL=18, 314 NET_NF_CONNTRACK_TCP_MAX_RETRANS=19, 315 NET_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 316 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 317 NET_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 318 NET_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 319 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 320 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 321 NET_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 322 NET_NF_CONNTRACK_COUNT=27, 323 NET_NF_CONNTRACK_ICMPV6_TIMEOUT=28, 324 NET_NF_CONNTRACK_FRAG6_TIMEOUT=29, 325 NET_NF_CONNTRACK_FRAG6_LOW_THRESH=30, 326 NET_NF_CONNTRACK_FRAG6_HIGH_THRESH=31, 327 NET_NF_CONNTRACK_CHECKSUM=32, 328 }; 329 330 /* /proc/sys/net/ipv4 */ 331 enum 332 { 333 /* v2.0 compatibile variables */ 334 NET_IPV4_FORWARD=8, 335 NET_IPV4_DYNADDR=9, 336 337 NET_IPV4_CONF=16, 338 NET_IPV4_NEIGH=17, 339 NET_IPV4_ROUTE=18, 340 NET_IPV4_FIB_HASH=19, 341 NET_IPV4_NETFILTER=20, 342 343 NET_IPV4_TCP_TIMESTAMPS=33, 344 NET_IPV4_TCP_WINDOW_SCALING=34, 345 NET_IPV4_TCP_SACK=35, 346 NET_IPV4_TCP_RETRANS_COLLAPSE=36, 347 NET_IPV4_DEFAULT_TTL=37, 348 NET_IPV4_AUTOCONFIG=38, 349 NET_IPV4_NO_PMTU_DISC=39, 350 NET_IPV4_TCP_SYN_RETRIES=40, 351 NET_IPV4_IPFRAG_HIGH_THRESH=41, 352 NET_IPV4_IPFRAG_LOW_THRESH=42, 353 NET_IPV4_IPFRAG_TIME=43, 354 NET_IPV4_TCP_MAX_KA_PROBES=44, 355 NET_IPV4_TCP_KEEPALIVE_TIME=45, 356 NET_IPV4_TCP_KEEPALIVE_PROBES=46, 357 NET_IPV4_TCP_RETRIES1=47, 358 NET_IPV4_TCP_RETRIES2=48, 359 NET_IPV4_TCP_FIN_TIMEOUT=49, 360 NET_IPV4_IP_MASQ_DEBUG=50, 361 NET_TCP_SYNCOOKIES=51, 362 NET_TCP_STDURG=52, 363 NET_TCP_RFC1337=53, 364 NET_TCP_SYN_TAILDROP=54, 365 NET_TCP_MAX_SYN_BACKLOG=55, 366 NET_IPV4_LOCAL_PORT_RANGE=56, 367 NET_IPV4_ICMP_ECHO_IGNORE_ALL=57, 368 NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58, 369 NET_IPV4_ICMP_SOURCEQUENCH_RATE=59, 370 NET_IPV4_ICMP_DESTUNREACH_RATE=60, 371 NET_IPV4_ICMP_TIMEEXCEED_RATE=61, 372 NET_IPV4_ICMP_PARAMPROB_RATE=62, 373 NET_IPV4_ICMP_ECHOREPLY_RATE=63, 374 NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64, 375 NET_IPV4_IGMP_MAX_MEMBERSHIPS=65, 376 NET_TCP_TW_RECYCLE=66, 377 NET_IPV4_ALWAYS_DEFRAG=67, 378 NET_IPV4_TCP_KEEPALIVE_INTVL=68, 379 NET_IPV4_INET_PEER_THRESHOLD=69, 380 NET_IPV4_INET_PEER_MINTTL=70, 381 NET_IPV4_INET_PEER_MAXTTL=71, 382 NET_IPV4_INET_PEER_GC_MINTIME=72, 383 NET_IPV4_INET_PEER_GC_MAXTIME=73, 384 NET_TCP_ORPHAN_RETRIES=74, 385 NET_TCP_ABORT_ON_OVERFLOW=75, 386 NET_TCP_SYNACK_RETRIES=76, 387 NET_TCP_MAX_ORPHANS=77, 388 NET_TCP_MAX_TW_BUCKETS=78, 389 NET_TCP_FACK=79, 390 NET_TCP_REORDERING=80, 391 NET_TCP_ECN=81, 392 NET_TCP_DSACK=82, 393 NET_TCP_MEM=83, 394 NET_TCP_WMEM=84, 395 NET_TCP_RMEM=85, 396 NET_TCP_APP_WIN=86, 397 NET_TCP_ADV_WIN_SCALE=87, 398 NET_IPV4_NONLOCAL_BIND=88, 399 NET_IPV4_ICMP_RATELIMIT=89, 400 NET_IPV4_ICMP_RATEMASK=90, 401 NET_TCP_TW_REUSE=91, 402 NET_TCP_FRTO=92, 403 NET_TCP_LOW_LATENCY=93, 404 NET_IPV4_IPFRAG_SECRET_INTERVAL=94, 405 NET_IPV4_IGMP_MAX_MSF=96, 406 NET_TCP_NO_METRICS_SAVE=97, 407 NET_TCP_DEFAULT_WIN_SCALE=105, 408 NET_TCP_MODERATE_RCVBUF=106, 409 NET_TCP_TSO_WIN_DIVISOR=107, 410 NET_TCP_BIC_BETA=108, 411 NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR=109, 412 NET_TCP_CONG_CONTROL=110, 413 NET_TCP_ABC=111, 414 NET_IPV4_IPFRAG_MAX_DIST=112, 415 NET_TCP_MTU_PROBING=113, 416 NET_TCP_BASE_MSS=114, 417 NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS=115, 418 NET_TCP_DMA_COPYBREAK=116, 419 NET_TCP_SLOW_START_AFTER_IDLE=117, 420 NET_CIPSOV4_CACHE_ENABLE=118, 421 NET_CIPSOV4_CACHE_BUCKET_SIZE=119, 422 NET_CIPSOV4_RBM_OPTFMT=120, 423 NET_CIPSOV4_RBM_STRICTVALID=121, 424 NET_TCP_AVAIL_CONG_CONTROL=122, 425 NET_TCP_ALLOWED_CONG_CONTROL=123, 426 NET_TCP_MAX_SSTHRESH=124, 427 NET_TCP_FRTO_RESPONSE=125, 428 }; 429 430 enum { 431 NET_IPV4_ROUTE_FLUSH=1, 432 NET_IPV4_ROUTE_MIN_DELAY=2, /* obsolete since 2.6.25 */ 433 NET_IPV4_ROUTE_MAX_DELAY=3, /* obsolete since 2.6.25 */ 434 NET_IPV4_ROUTE_GC_THRESH=4, 435 NET_IPV4_ROUTE_MAX_SIZE=5, 436 NET_IPV4_ROUTE_GC_MIN_INTERVAL=6, 437 NET_IPV4_ROUTE_GC_TIMEOUT=7, 438 NET_IPV4_ROUTE_GC_INTERVAL=8, 439 NET_IPV4_ROUTE_REDIRECT_LOAD=9, 440 NET_IPV4_ROUTE_REDIRECT_NUMBER=10, 441 NET_IPV4_ROUTE_REDIRECT_SILENCE=11, 442 NET_IPV4_ROUTE_ERROR_COST=12, 443 NET_IPV4_ROUTE_ERROR_BURST=13, 444 NET_IPV4_ROUTE_GC_ELASTICITY=14, 445 NET_IPV4_ROUTE_MTU_EXPIRES=15, 446 NET_IPV4_ROUTE_MIN_PMTU=16, 447 NET_IPV4_ROUTE_MIN_ADVMSS=17, 448 NET_IPV4_ROUTE_SECRET_INTERVAL=18, 449 NET_IPV4_ROUTE_GC_MIN_INTERVAL_MS=19, 450 }; 451 452 enum 453 { 454 NET_PROTO_CONF_ALL=-2, 455 NET_PROTO_CONF_DEFAULT=-3 456 457 /* And device ifindices ... */ 458 }; 459 460 enum 461 { 462 NET_IPV4_CONF_FORWARDING=1, 463 NET_IPV4_CONF_MC_FORWARDING=2, 464 NET_IPV4_CONF_PROXY_ARP=3, 465 NET_IPV4_CONF_ACCEPT_REDIRECTS=4, 466 NET_IPV4_CONF_SECURE_REDIRECTS=5, 467 NET_IPV4_CONF_SEND_REDIRECTS=6, 468 NET_IPV4_CONF_SHARED_MEDIA=7, 469 NET_IPV4_CONF_RP_FILTER=8, 470 NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9, 471 NET_IPV4_CONF_BOOTP_RELAY=10, 472 NET_IPV4_CONF_LOG_MARTIANS=11, 473 NET_IPV4_CONF_TAG=12, 474 NET_IPV4_CONF_ARPFILTER=13, 475 NET_IPV4_CONF_MEDIUM_ID=14, 476 NET_IPV4_CONF_NOXFRM=15, 477 NET_IPV4_CONF_NOPOLICY=16, 478 NET_IPV4_CONF_FORCE_IGMP_VERSION=17, 479 NET_IPV4_CONF_ARP_ANNOUNCE=18, 480 NET_IPV4_CONF_ARP_IGNORE=19, 481 NET_IPV4_CONF_PROMOTE_SECONDARIES=20, 482 NET_IPV4_CONF_ARP_ACCEPT=21, 483 NET_IPV4_CONF_ARP_NOTIFY=22, 484 }; 485 486 /* /proc/sys/net/ipv4/netfilter */ 487 enum 488 { 489 NET_IPV4_NF_CONNTRACK_MAX=1, 490 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_SENT=2, 491 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_SYN_RECV=3, 492 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_ESTABLISHED=4, 493 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_FIN_WAIT=5, 494 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE_WAIT=6, 495 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_LAST_ACK=7, 496 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_TIME_WAIT=8, 497 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_CLOSE=9, 498 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT=10, 499 NET_IPV4_NF_CONNTRACK_UDP_TIMEOUT_STREAM=11, 500 NET_IPV4_NF_CONNTRACK_ICMP_TIMEOUT=12, 501 NET_IPV4_NF_CONNTRACK_GENERIC_TIMEOUT=13, 502 NET_IPV4_NF_CONNTRACK_BUCKETS=14, 503 NET_IPV4_NF_CONNTRACK_LOG_INVALID=15, 504 NET_IPV4_NF_CONNTRACK_TCP_TIMEOUT_MAX_RETRANS=16, 505 NET_IPV4_NF_CONNTRACK_TCP_LOOSE=17, 506 NET_IPV4_NF_CONNTRACK_TCP_BE_LIBERAL=18, 507 NET_IPV4_NF_CONNTRACK_TCP_MAX_RETRANS=19, 508 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_CLOSED=20, 509 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_WAIT=21, 510 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_COOKIE_ECHOED=22, 511 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_ESTABLISHED=23, 512 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_SENT=24, 513 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_RECD=25, 514 NET_IPV4_NF_CONNTRACK_SCTP_TIMEOUT_SHUTDOWN_ACK_SENT=26, 515 NET_IPV4_NF_CONNTRACK_COUNT=27, 516 NET_IPV4_NF_CONNTRACK_CHECKSUM=28, 517 }; 518 519 /* /proc/sys/net/ipv6 */ 520 enum { 521 NET_IPV6_CONF=16, 522 NET_IPV6_NEIGH=17, 523 NET_IPV6_ROUTE=18, 524 NET_IPV6_ICMP=19, 525 NET_IPV6_BINDV6ONLY=20, 526 NET_IPV6_IP6FRAG_HIGH_THRESH=21, 527 NET_IPV6_IP6FRAG_LOW_THRESH=22, 528 NET_IPV6_IP6FRAG_TIME=23, 529 NET_IPV6_IP6FRAG_SECRET_INTERVAL=24, 530 NET_IPV6_MLD_MAX_MSF=25, 531 }; 532 533 enum { 534 NET_IPV6_ROUTE_FLUSH=1, 535 NET_IPV6_ROUTE_GC_THRESH=2, 536 NET_IPV6_ROUTE_MAX_SIZE=3, 537 NET_IPV6_ROUTE_GC_MIN_INTERVAL=4, 538 NET_IPV6_ROUTE_GC_TIMEOUT=5, 539 NET_IPV6_ROUTE_GC_INTERVAL=6, 540 NET_IPV6_ROUTE_GC_ELASTICITY=7, 541 NET_IPV6_ROUTE_MTU_EXPIRES=8, 542 NET_IPV6_ROUTE_MIN_ADVMSS=9, 543 NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS=10 544 }; 545 546 enum { 547 NET_IPV6_FORWARDING=1, 548 NET_IPV6_HOP_LIMIT=2, 549 NET_IPV6_MTU=3, 550 NET_IPV6_ACCEPT_RA=4, 551 NET_IPV6_ACCEPT_REDIRECTS=5, 552 NET_IPV6_AUTOCONF=6, 553 NET_IPV6_DAD_TRANSMITS=7, 554 NET_IPV6_RTR_SOLICITS=8, 555 NET_IPV6_RTR_SOLICIT_INTERVAL=9, 556 NET_IPV6_RTR_SOLICIT_DELAY=10, 557 NET_IPV6_USE_TEMPADDR=11, 558 NET_IPV6_TEMP_VALID_LFT=12, 559 NET_IPV6_TEMP_PREFERED_LFT=13, 560 NET_IPV6_REGEN_MAX_RETRY=14, 561 NET_IPV6_MAX_DESYNC_FACTOR=15, 562 NET_IPV6_MAX_ADDRESSES=16, 563 NET_IPV6_FORCE_MLD_VERSION=17, 564 NET_IPV6_ACCEPT_RA_DEFRTR=18, 565 NET_IPV6_ACCEPT_RA_PINFO=19, 566 NET_IPV6_ACCEPT_RA_RTR_PREF=20, 567 NET_IPV6_RTR_PROBE_INTERVAL=21, 568 NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN=22, 569 NET_IPV6_PROXY_NDP=23, 570 NET_IPV6_ACCEPT_SOURCE_ROUTE=25, 571 __NET_IPV6_MAX 572 }; 573 574 /* /proc/sys/net/ipv6/icmp */ 575 enum { 576 NET_IPV6_ICMP_RATELIMIT=1 577 }; 578 579 /* /proc/sys/net/<protocol>/neigh/<dev> */ 580 enum { 581 NET_NEIGH_MCAST_SOLICIT=1, 582 NET_NEIGH_UCAST_SOLICIT=2, 583 NET_NEIGH_APP_SOLICIT=3, 584 NET_NEIGH_RETRANS_TIME=4, 585 NET_NEIGH_REACHABLE_TIME=5, 586 NET_NEIGH_DELAY_PROBE_TIME=6, 587 NET_NEIGH_GC_STALE_TIME=7, 588 NET_NEIGH_UNRES_QLEN=8, 589 NET_NEIGH_PROXY_QLEN=9, 590 NET_NEIGH_ANYCAST_DELAY=10, 591 NET_NEIGH_PROXY_DELAY=11, 592 NET_NEIGH_LOCKTIME=12, 593 NET_NEIGH_GC_INTERVAL=13, 594 NET_NEIGH_GC_THRESH1=14, 595 NET_NEIGH_GC_THRESH2=15, 596 NET_NEIGH_GC_THRESH3=16, 597 NET_NEIGH_RETRANS_TIME_MS=17, 598 NET_NEIGH_REACHABLE_TIME_MS=18, 599 }; 600 601 /* /proc/sys/net/dccp */ 602 enum { 603 NET_DCCP_DEFAULT=1, 604 }; 605 606 /* /proc/sys/net/ipx */ 607 enum { 608 NET_IPX_PPROP_BROADCASTING=1, 609 NET_IPX_FORWARDING=2 610 }; 611 612 /* /proc/sys/net/llc */ 613 enum { 614 NET_LLC2=1, 615 NET_LLC_STATION=2, 616 }; 617 618 /* /proc/sys/net/llc/llc2 */ 619 enum { 620 NET_LLC2_TIMEOUT=1, 621 }; 622 623 /* /proc/sys/net/llc/station */ 624 enum { 625 NET_LLC_STATION_ACK_TIMEOUT=1, 626 }; 627 628 /* /proc/sys/net/llc/llc2/timeout */ 629 enum { 630 NET_LLC2_ACK_TIMEOUT=1, 631 NET_LLC2_P_TIMEOUT=2, 632 NET_LLC2_REJ_TIMEOUT=3, 633 NET_LLC2_BUSY_TIMEOUT=4, 634 }; 635 636 /* /proc/sys/net/appletalk */ 637 enum { 638 NET_ATALK_AARP_EXPIRY_TIME=1, 639 NET_ATALK_AARP_TICK_TIME=2, 640 NET_ATALK_AARP_RETRANSMIT_LIMIT=3, 641 NET_ATALK_AARP_RESOLVE_TIME=4 642 }; 643 644 645 /* /proc/sys/net/netrom */ 646 enum { 647 NET_NETROM_DEFAULT_PATH_QUALITY=1, 648 NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2, 649 NET_NETROM_NETWORK_TTL_INITIALISER=3, 650 NET_NETROM_TRANSPORT_TIMEOUT=4, 651 NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5, 652 NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6, 653 NET_NETROM_TRANSPORT_BUSY_DELAY=7, 654 NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8, 655 NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9, 656 NET_NETROM_ROUTING_CONTROL=10, 657 NET_NETROM_LINK_FAILS_COUNT=11, 658 NET_NETROM_RESET=12 659 }; 660 661 /* /proc/sys/net/ax25 */ 662 enum { 663 NET_AX25_IP_DEFAULT_MODE=1, 664 NET_AX25_DEFAULT_MODE=2, 665 NET_AX25_BACKOFF_TYPE=3, 666 NET_AX25_CONNECT_MODE=4, 667 NET_AX25_STANDARD_WINDOW=5, 668 NET_AX25_EXTENDED_WINDOW=6, 669 NET_AX25_T1_TIMEOUT=7, 670 NET_AX25_T2_TIMEOUT=8, 671 NET_AX25_T3_TIMEOUT=9, 672 NET_AX25_IDLE_TIMEOUT=10, 673 NET_AX25_N2=11, 674 NET_AX25_PACLEN=12, 675 NET_AX25_PROTOCOL=13, 676 NET_AX25_DAMA_SLAVE_TIMEOUT=14 677 }; 678 679 /* /proc/sys/net/rose */ 680 enum { 681 NET_ROSE_RESTART_REQUEST_TIMEOUT=1, 682 NET_ROSE_CALL_REQUEST_TIMEOUT=2, 683 NET_ROSE_RESET_REQUEST_TIMEOUT=3, 684 NET_ROSE_CLEAR_REQUEST_TIMEOUT=4, 685 NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5, 686 NET_ROSE_ROUTING_CONTROL=6, 687 NET_ROSE_LINK_FAIL_TIMEOUT=7, 688 NET_ROSE_MAX_VCS=8, 689 NET_ROSE_WINDOW_SIZE=9, 690 NET_ROSE_NO_ACTIVITY_TIMEOUT=10 691 }; 692 693 /* /proc/sys/net/x25 */ 694 enum { 695 NET_X25_RESTART_REQUEST_TIMEOUT=1, 696 NET_X25_CALL_REQUEST_TIMEOUT=2, 697 NET_X25_RESET_REQUEST_TIMEOUT=3, 698 NET_X25_CLEAR_REQUEST_TIMEOUT=4, 699 NET_X25_ACK_HOLD_BACK_TIMEOUT=5, 700 NET_X25_FORWARD=6 701 }; 702 703 /* /proc/sys/net/token-ring */ 704 enum 705 { 706 NET_TR_RIF_TIMEOUT=1 707 }; 708 709 /* /proc/sys/net/decnet/ */ 710 enum { 711 NET_DECNET_NODE_TYPE = 1, 712 NET_DECNET_NODE_ADDRESS = 2, 713 NET_DECNET_NODE_NAME = 3, 714 NET_DECNET_DEFAULT_DEVICE = 4, 715 NET_DECNET_TIME_WAIT = 5, 716 NET_DECNET_DN_COUNT = 6, 717 NET_DECNET_DI_COUNT = 7, 718 NET_DECNET_DR_COUNT = 8, 719 NET_DECNET_DST_GC_INTERVAL = 9, 720 NET_DECNET_CONF = 10, 721 NET_DECNET_NO_FC_MAX_CWND = 11, 722 NET_DECNET_MEM = 12, 723 NET_DECNET_RMEM = 13, 724 NET_DECNET_WMEM = 14, 725 NET_DECNET_DEBUG_LEVEL = 255 726 }; 727 728 /* /proc/sys/net/decnet/conf/<dev> */ 729 enum { 730 NET_DECNET_CONF_LOOPBACK = -2, 731 NET_DECNET_CONF_DDCMP = -3, 732 NET_DECNET_CONF_PPP = -4, 733 NET_DECNET_CONF_X25 = -5, 734 NET_DECNET_CONF_GRE = -6, 735 NET_DECNET_CONF_ETHER = -7 736 737 /* ... and ifindex of devices */ 738 }; 739 740 /* /proc/sys/net/decnet/conf/<dev>/ */ 741 enum { 742 NET_DECNET_CONF_DEV_PRIORITY = 1, 743 NET_DECNET_CONF_DEV_T1 = 2, 744 NET_DECNET_CONF_DEV_T2 = 3, 745 NET_DECNET_CONF_DEV_T3 = 4, 746 NET_DECNET_CONF_DEV_FORWARDING = 5, 747 NET_DECNET_CONF_DEV_BLKSIZE = 6, 748 NET_DECNET_CONF_DEV_STATE = 7 749 }; 750 751 /* /proc/sys/net/sctp */ 752 enum { 753 NET_SCTP_RTO_INITIAL = 1, 754 NET_SCTP_RTO_MIN = 2, 755 NET_SCTP_RTO_MAX = 3, 756 NET_SCTP_RTO_ALPHA = 4, 757 NET_SCTP_RTO_BETA = 5, 758 NET_SCTP_VALID_COOKIE_LIFE = 6, 759 NET_SCTP_ASSOCIATION_MAX_RETRANS = 7, 760 NET_SCTP_PATH_MAX_RETRANS = 8, 761 NET_SCTP_MAX_INIT_RETRANSMITS = 9, 762 NET_SCTP_HB_INTERVAL = 10, 763 NET_SCTP_PRESERVE_ENABLE = 11, 764 NET_SCTP_MAX_BURST = 12, 765 NET_SCTP_ADDIP_ENABLE = 13, 766 NET_SCTP_PRSCTP_ENABLE = 14, 767 NET_SCTP_SNDBUF_POLICY = 15, 768 NET_SCTP_SACK_TIMEOUT = 16, 769 NET_SCTP_RCVBUF_POLICY = 17, 770 }; 771 772 /* /proc/sys/net/bridge */ 773 enum { 774 NET_BRIDGE_NF_CALL_ARPTABLES = 1, 775 NET_BRIDGE_NF_CALL_IPTABLES = 2, 776 NET_BRIDGE_NF_CALL_IP6TABLES = 3, 777 NET_BRIDGE_NF_FILTER_VLAN_TAGGED = 4, 778 NET_BRIDGE_NF_FILTER_PPPOE_TAGGED = 5, 779 }; 780 781 /* proc/sys/net/irda */ 782 enum { 783 NET_IRDA_DISCOVERY=1, 784 NET_IRDA_DEVNAME=2, 785 NET_IRDA_DEBUG=3, 786 NET_IRDA_FAST_POLL=4, 787 NET_IRDA_DISCOVERY_SLOTS=5, 788 NET_IRDA_DISCOVERY_TIMEOUT=6, 789 NET_IRDA_SLOT_TIMEOUT=7, 790 NET_IRDA_MAX_BAUD_RATE=8, 791 NET_IRDA_MIN_TX_TURN_TIME=9, 792 NET_IRDA_MAX_TX_DATA_SIZE=10, 793 NET_IRDA_MAX_TX_WINDOW=11, 794 NET_IRDA_MAX_NOREPLY_TIME=12, 795 NET_IRDA_WARN_NOREPLY_TIME=13, 796 NET_IRDA_LAP_KEEPALIVE_TIME=14, 797 }; 798 799 800 /* CTL_FS names: */ 801 enum 802 { 803 FS_NRINODE=1, /* int:current number of allocated inodes */ 804 FS_STATINODE=2, 805 FS_MAXINODE=3, /* int:maximum number of inodes that can be allocated */ 806 FS_NRDQUOT=4, /* int:current number of allocated dquots */ 807 FS_MAXDQUOT=5, /* int:maximum number of dquots that can be allocated */ 808 FS_NRFILE=6, /* int:current number of allocated filedescriptors */ 809 FS_MAXFILE=7, /* int:maximum number of filedescriptors that can be allocated */ 810 FS_DENTRY=8, 811 FS_NRSUPER=9, /* int:current number of allocated super_blocks */ 812 FS_MAXSUPER=10, /* int:maximum number of super_blocks that can be allocated */ 813 FS_OVERFLOWUID=11, /* int: overflow UID */ 814 FS_OVERFLOWGID=12, /* int: overflow GID */ 815 FS_LEASES=13, /* int: leases enabled */ 816 FS_DIR_NOTIFY=14, /* int: directory notification enabled */ 817 FS_LEASE_TIME=15, /* int: maximum time to wait for a lease break */ 818 FS_DQSTATS=16, /* disc quota usage statistics and control */ 819 FS_XFS=17, /* struct: control xfs parameters */ 820 FS_AIO_NR=18, /* current system-wide number of aio requests */ 821 FS_AIO_MAX_NR=19, /* system-wide maximum number of aio requests */ 822 FS_INOTIFY=20, /* inotify submenu */ 823 FS_OCFS2=988, /* ocfs2 */ 824 }; 825 826 /* /proc/sys/fs/quota/ */ 827 enum { 828 FS_DQ_LOOKUPS = 1, 829 FS_DQ_DROPS = 2, 830 FS_DQ_READS = 3, 831 FS_DQ_WRITES = 4, 832 FS_DQ_CACHE_HITS = 5, 833 FS_DQ_ALLOCATED = 6, 834 FS_DQ_FREE = 7, 835 FS_DQ_SYNCS = 8, 836 FS_DQ_WARNINGS = 9, 837 }; 838 839 /* CTL_DEBUG names: */ 840 841 /* CTL_DEV names: */ 842 enum { 843 DEV_CDROM=1, 844 DEV_HWMON=2, 845 DEV_PARPORT=3, 846 DEV_RAID=4, 847 DEV_MAC_HID=5, 848 DEV_SCSI=6, 849 DEV_IPMI=7, 850 }; 851 852 /* /proc/sys/dev/cdrom */ 853 enum { 854 DEV_CDROM_INFO=1, 855 DEV_CDROM_AUTOCLOSE=2, 856 DEV_CDROM_AUTOEJECT=3, 857 DEV_CDROM_DEBUG=4, 858 DEV_CDROM_LOCK=5, 859 DEV_CDROM_CHECK_MEDIA=6 860 }; 861 862 /* /proc/sys/dev/parport */ 863 enum { 864 DEV_PARPORT_DEFAULT=-3 865 }; 866 867 /* /proc/sys/dev/raid */ 868 enum { 869 DEV_RAID_SPEED_LIMIT_MIN=1, 870 DEV_RAID_SPEED_LIMIT_MAX=2 871 }; 872 873 /* /proc/sys/dev/parport/default */ 874 enum { 875 DEV_PARPORT_DEFAULT_TIMESLICE=1, 876 DEV_PARPORT_DEFAULT_SPINTIME=2 877 }; 878 879 /* /proc/sys/dev/parport/parport n */ 880 enum { 881 DEV_PARPORT_SPINTIME=1, 882 DEV_PARPORT_BASE_ADDR=2, 883 DEV_PARPORT_IRQ=3, 884 DEV_PARPORT_DMA=4, 885 DEV_PARPORT_MODES=5, 886 DEV_PARPORT_DEVICES=6, 887 DEV_PARPORT_AUTOPROBE=16 888 }; 889 890 /* /proc/sys/dev/parport/parport n/devices/ */ 891 enum { 892 DEV_PARPORT_DEVICES_ACTIVE=-3, 893 }; 894 895 /* /proc/sys/dev/parport/parport n/devices/device n */ 896 enum { 897 DEV_PARPORT_DEVICE_TIMESLICE=1, 898 }; 899 900 /* /proc/sys/dev/mac_hid */ 901 enum { 902 DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1, 903 DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2, 904 DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3, 905 DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4, 906 DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5, 907 DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6 908 }; 909 910 /* /proc/sys/dev/scsi */ 911 enum { 912 DEV_SCSI_LOGGING_LEVEL=1, 913 }; 914 915 /* /proc/sys/dev/ipmi */ 916 enum { 917 DEV_IPMI_POWEROFF_POWERCYCLE=1, 918 }; 919 920 /* /proc/sys/abi */ 921 enum 922 { 923 ABI_DEFHANDLER_COFF=1, /* default handler for coff binaries */ 924 ABI_DEFHANDLER_ELF=2, /* default handler for ELF binaries */ 925 ABI_DEFHANDLER_LCALL7=3,/* default handler for procs using lcall7 */ 926 ABI_DEFHANDLER_LIBCSO=4,/* default handler for an libc.so ELF interp */ 927 ABI_TRACE=5, /* tracing flags */ 928 ABI_FAKE_UTSNAME=6, /* fake target utsname information */ 929 }; 930 931 #ifdef __KERNEL__ 932 #include <linux/list.h> 933 #include <linux/rcupdate.h> 934 935 /* For the /proc/sys support */ 936 struct ctl_table; 937 struct nsproxy; 938 struct ctl_table_root; 939 940 struct ctl_table_set { 941 struct list_head list; 942 struct ctl_table_set *parent; 943 int (*is_seen)(struct ctl_table_set *); 944 }; 945 946 extern void setup_sysctl_set(struct ctl_table_set *p, 947 struct ctl_table_set *parent, 948 int (*is_seen)(struct ctl_table_set *)); 949 950 struct ctl_table_header; 951 952 extern void sysctl_head_get(struct ctl_table_header *); 953 extern void sysctl_head_put(struct ctl_table_header *); 954 extern int sysctl_is_seen(struct ctl_table_header *); 955 extern struct ctl_table_header *sysctl_head_grab(struct ctl_table_header *); 956 extern struct ctl_table_header *sysctl_head_next(struct ctl_table_header *prev); 957 extern struct ctl_table_header *__sysctl_head_next(struct nsproxy *namespaces, 958 struct ctl_table_header *prev); 959 extern void sysctl_head_finish(struct ctl_table_header *prev); 960 extern int sysctl_perm(struct ctl_table_root *root, 961 struct ctl_table *table, int op); 962 963 typedef struct ctl_table ctl_table; 964 965 typedef int proc_handler (struct ctl_table *ctl, int write, 966 void __user *buffer, size_t *lenp, loff_t *ppos); 967 968 extern int proc_dostring(struct ctl_table *, int, 969 void __user *, size_t *, loff_t *); 970 extern int proc_dointvec(struct ctl_table *, int, 971 void __user *, size_t *, loff_t *); 972 extern int proc_dointvec_minmax(struct ctl_table *, int, 973 void __user *, size_t *, loff_t *); 974 extern int proc_dointvec_jiffies(struct ctl_table *, int, 975 void __user *, size_t *, loff_t *); 976 extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int, 977 void __user *, size_t *, loff_t *); 978 extern int proc_dointvec_ms_jiffies(struct ctl_table *, int, 979 void __user *, size_t *, loff_t *); 980 extern int proc_doulongvec_minmax(struct ctl_table *, int, 981 void __user *, size_t *, loff_t *); 982 extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int, 983 void __user *, size_t *, loff_t *); 984 extern int proc_do_large_bitmap(struct ctl_table *, int, 985 void __user *, size_t *, loff_t *); 986 987 /* 988 * Register a set of sysctl names by calling register_sysctl_table 989 * with an initialised array of struct ctl_table's. An entry with 990 * NULL procname terminates the table. table->de will be 991 * set up by the registration and need not be initialised in advance. 992 * 993 * sysctl names can be mirrored automatically under /proc/sys. The 994 * procname supplied controls /proc naming. 995 * 996 * The table's mode will be honoured both for sys_sysctl(2) and 997 * proc-fs access. 998 * 999 * Leaf nodes in the sysctl tree will be represented by a single file 1000 * under /proc; non-leaf nodes will be represented by directories. A 1001 * null procname disables /proc mirroring at this node. 1002 * 1003 * sysctl(2) can automatically manage read and write requests through 1004 * the sysctl table. The data and maxlen fields of the ctl_table 1005 * struct enable minimal validation of the values being written to be 1006 * performed, and the mode field allows minimal authentication. 1007 * 1008 * There must be a proc_handler routine for any terminal nodes 1009 * mirrored under /proc/sys (non-terminals are handled by a built-in 1010 * directory handler). Several default handlers are available to 1011 * cover common cases. 1012 */ 1013 1014 /* A sysctl table is an array of struct ctl_table: */ 1015 struct ctl_table 1016 { 1017 const char *procname; /* Text ID for /proc/sys, or zero */ 1018 void *data; 1019 int maxlen; 1020 mode_t mode; 1021 struct ctl_table *child; 1022 struct ctl_table *parent; /* Automatically set */ 1023 proc_handler *proc_handler; /* Callback for text formatting */ 1024 void *extra1; 1025 void *extra2; 1026 }; 1027 1028 struct ctl_table_root { 1029 struct list_head root_list; 1030 struct ctl_table_set default_set; 1031 struct ctl_table_set *(*lookup)(struct ctl_table_root *root, 1032 struct nsproxy *namespaces); 1033 int (*permissions)(struct ctl_table_root *root, 1034 struct nsproxy *namespaces, struct ctl_table *table); 1035 }; 1036 1037 /* struct ctl_table_header is used to maintain dynamic lists of 1038 struct ctl_table trees. */ 1039 struct ctl_table_header 1040 { 1041 union { 1042 struct { 1043 struct ctl_table *ctl_table; 1044 struct list_head ctl_entry; 1045 int used; 1046 int count; 1047 }; 1048 struct rcu_head rcu; 1049 }; 1050 struct completion *unregistering; 1051 struct ctl_table *ctl_table_arg; 1052 struct ctl_table_root *root; 1053 struct ctl_table_set *set; 1054 struct ctl_table *attached_by; 1055 struct ctl_table *attached_to; 1056 struct ctl_table_header *parent; 1057 }; 1058 1059 /* struct ctl_path describes where in the hierarchy a table is added */ 1060 struct ctl_path { 1061 const char *procname; 1062 }; 1063 1064 void register_sysctl_root(struct ctl_table_root *root); 1065 struct ctl_table_header *__register_sysctl_paths( 1066 struct ctl_table_root *root, struct nsproxy *namespaces, 1067 const struct ctl_path *path, struct ctl_table *table); 1068 struct ctl_table_header *register_sysctl_table(struct ctl_table * table); 1069 struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path, 1070 struct ctl_table *table); 1071 1072 void unregister_sysctl_table(struct ctl_table_header * table); 1073 int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table); 1074 1075 #endif /* __KERNEL__ */ 1076 1077 #endif /* _LINUX_SYSCTL_H */ 1078