linux/include/linux/sysctl.h
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   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
  29struct 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
  36struct __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
  50enum
  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: */
  70enum
  71{
  72        CTL_BUS_ISA=1           /* ISA */
  73};
  74
  75/* /proc/sys/fs/inotify/ */
  76enum
  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: */
  84enum
  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: */
 161enum
 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: */
 202enum
 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 */
 228enum
 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 */
 239enum
 240{
 241        PTY_MAX=1,
 242        PTY_NR=2
 243};
 244
 245/* /proc/sys/bus/isa */
 246enum
 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 */
 254enum
 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
 286enum
 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 */
 294enum
 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 */
 331enum
 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
 430enum {
 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, /* obsolete since 2.6.38 */
 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
 452enum
 453{
 454        NET_PROTO_CONF_ALL=-2,
 455        NET_PROTO_CONF_DEFAULT=-3
 456
 457        /* And device ifindices ... */
 458};
 459
 460enum
 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 */
 487enum
 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 */
 520enum {
 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
 533enum {
 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
 546enum {
 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 */
 575enum {
 576        NET_IPV6_ICMP_RATELIMIT=1
 577};
 578
 579/* /proc/sys/net/<protocol>/neigh/<dev> */
 580enum {
 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 */
 602enum {
 603        NET_DCCP_DEFAULT=1,
 604};
 605
 606/* /proc/sys/net/ipx */
 607enum {
 608        NET_IPX_PPROP_BROADCASTING=1,
 609        NET_IPX_FORWARDING=2
 610};
 611
 612/* /proc/sys/net/llc */
 613enum {
 614        NET_LLC2=1,
 615        NET_LLC_STATION=2,
 616};
 617
 618/* /proc/sys/net/llc/llc2 */
 619enum {
 620        NET_LLC2_TIMEOUT=1,
 621};
 622
 623/* /proc/sys/net/llc/station */
 624enum {
 625        NET_LLC_STATION_ACK_TIMEOUT=1,
 626};
 627
 628/* /proc/sys/net/llc/llc2/timeout */
 629enum {
 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 */
 637enum {
 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 */
 646enum {
 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 */
 662enum {
 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 */
 680enum {
 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 */
 694enum {
 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 */
 704enum
 705{
 706        NET_TR_RIF_TIMEOUT=1
 707};
 708
 709/* /proc/sys/net/decnet/ */
 710enum {
 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> */
 729enum {
 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>/ */
 741enum {
 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 */
 752enum {
 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 */
 773enum {
 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 */
 782enum {
 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: */
 801enum
 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/ */
 827enum {
 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: */
 842enum {
 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 */
 853enum {
 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 */
 863enum {
 864        DEV_PARPORT_DEFAULT=-3
 865};
 866
 867/* /proc/sys/dev/raid */
 868enum {
 869        DEV_RAID_SPEED_LIMIT_MIN=1,
 870        DEV_RAID_SPEED_LIMIT_MAX=2
 871};
 872
 873/* /proc/sys/dev/parport/default */
 874enum {
 875        DEV_PARPORT_DEFAULT_TIMESLICE=1,
 876        DEV_PARPORT_DEFAULT_SPINTIME=2
 877};
 878
 879/* /proc/sys/dev/parport/parport n */
 880enum {
 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/ */
 891enum {
 892        DEV_PARPORT_DEVICES_ACTIVE=-3,
 893};
 894
 895/* /proc/sys/dev/parport/parport n/devices/device n */
 896enum {
 897        DEV_PARPORT_DEVICE_TIMESLICE=1,
 898};
 899
 900/* /proc/sys/dev/mac_hid */
 901enum {
 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 */
 911enum {
 912        DEV_SCSI_LOGGING_LEVEL=1,
 913};
 914
 915/* /proc/sys/dev/ipmi */
 916enum {
 917        DEV_IPMI_POWEROFF_POWERCYCLE=1,
 918};
 919
 920/* /proc/sys/abi */
 921enum
 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#include <linux/wait.h>
 935#include <linux/rbtree.h>
 936
 937/* For the /proc/sys support */
 938struct ctl_table;
 939struct nsproxy;
 940struct ctl_table_root;
 941struct ctl_table_header;
 942struct ctl_dir;
 943
 944typedef struct ctl_table ctl_table;
 945
 946typedef int proc_handler (struct ctl_table *ctl, int write,
 947                          void __user *buffer, size_t *lenp, loff_t *ppos);
 948
 949extern int proc_dostring(struct ctl_table *, int,
 950                         void __user *, size_t *, loff_t *);
 951extern int proc_dointvec(struct ctl_table *, int,
 952                         void __user *, size_t *, loff_t *);
 953extern int proc_dointvec_minmax(struct ctl_table *, int,
 954                                void __user *, size_t *, loff_t *);
 955extern int proc_dointvec_jiffies(struct ctl_table *, int,
 956                                 void __user *, size_t *, loff_t *);
 957extern int proc_dointvec_userhz_jiffies(struct ctl_table *, int,
 958                                        void __user *, size_t *, loff_t *);
 959extern int proc_dointvec_ms_jiffies(struct ctl_table *, int,
 960                                    void __user *, size_t *, loff_t *);
 961extern int proc_doulongvec_minmax(struct ctl_table *, int,
 962                                  void __user *, size_t *, loff_t *);
 963extern int proc_doulongvec_ms_jiffies_minmax(struct ctl_table *table, int,
 964                                      void __user *, size_t *, loff_t *);
 965extern int proc_do_large_bitmap(struct ctl_table *, int,
 966                                void __user *, size_t *, loff_t *);
 967
 968/*
 969 * Register a set of sysctl names by calling register_sysctl_table
 970 * with an initialised array of struct ctl_table's.  An entry with 
 971 * NULL procname terminates the table.  table->de will be
 972 * set up by the registration and need not be initialised in advance.
 973 *
 974 * sysctl names can be mirrored automatically under /proc/sys.  The
 975 * procname supplied controls /proc naming.
 976 *
 977 * The table's mode will be honoured both for sys_sysctl(2) and
 978 * proc-fs access.
 979 *
 980 * Leaf nodes in the sysctl tree will be represented by a single file
 981 * under /proc; non-leaf nodes will be represented by directories.  A
 982 * null procname disables /proc mirroring at this node.
 983 *
 984 * sysctl(2) can automatically manage read and write requests through
 985 * the sysctl table.  The data and maxlen fields of the ctl_table
 986 * struct enable minimal validation of the values being written to be
 987 * performed, and the mode field allows minimal authentication.
 988 * 
 989 * There must be a proc_handler routine for any terminal nodes
 990 * mirrored under /proc/sys (non-terminals are handled by a built-in
 991 * directory handler).  Several default handlers are available to
 992 * cover common cases.
 993 */
 994
 995/* Support for userspace poll() to watch for changes */
 996struct ctl_table_poll {
 997        atomic_t event;
 998        wait_queue_head_t wait;
 999};
1000
1001static inline void *proc_sys_poll_event(struct ctl_table_poll *poll)
1002{
1003        return (void *)(unsigned long)atomic_read(&poll->event);
1004}
1005
1006#define __CTL_TABLE_POLL_INITIALIZER(name) {                            \
1007        .event = ATOMIC_INIT(0),                                        \
1008        .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait) }
1009
1010#define DEFINE_CTL_TABLE_POLL(name)                                     \
1011        struct ctl_table_poll name = __CTL_TABLE_POLL_INITIALIZER(name)
1012
1013/* A sysctl table is an array of struct ctl_table: */
1014struct ctl_table 
1015{
1016        const char *procname;           /* Text ID for /proc/sys, or zero */
1017        void *data;
1018        int maxlen;
1019        umode_t mode;
1020        struct ctl_table *child;        /* Deprecated */
1021        proc_handler *proc_handler;     /* Callback for text formatting */
1022        struct ctl_table_poll *poll;
1023        void *extra1;
1024        void *extra2;
1025};
1026
1027struct ctl_node {
1028        struct rb_node node;
1029        struct ctl_table_header *header;
1030};
1031
1032/* struct ctl_table_header is used to maintain dynamic lists of
1033   struct ctl_table trees. */
1034struct ctl_table_header
1035{
1036        union {
1037                struct {
1038                        struct ctl_table *ctl_table;
1039                        int used;
1040                        int count;
1041                        int nreg;
1042                };
1043                struct rcu_head rcu;
1044        };
1045        struct completion *unregistering;
1046        struct ctl_table *ctl_table_arg;
1047        struct ctl_table_root *root;
1048        struct ctl_table_set *set;
1049        struct ctl_dir *parent;
1050        struct ctl_node *node;
1051};
1052
1053struct ctl_dir {
1054        /* Header must be at the start of ctl_dir */
1055        struct ctl_table_header header;
1056        struct rb_root root;
1057};
1058
1059struct ctl_table_set {
1060        int (*is_seen)(struct ctl_table_set *);
1061        struct ctl_dir dir;
1062};
1063
1064struct ctl_table_root {
1065        struct ctl_table_set default_set;
1066        struct ctl_table_set *(*lookup)(struct ctl_table_root *root,
1067                                           struct nsproxy *namespaces);
1068        int (*permissions)(struct ctl_table_root *root,
1069                        struct nsproxy *namespaces, struct ctl_table *table);
1070};
1071
1072/* struct ctl_path describes where in the hierarchy a table is added */
1073struct ctl_path {
1074        const char *procname;
1075};
1076
1077#ifdef CONFIG_SYSCTL
1078
1079void proc_sys_poll_notify(struct ctl_table_poll *poll);
1080
1081extern void setup_sysctl_set(struct ctl_table_set *p,
1082        struct ctl_table_root *root,
1083        int (*is_seen)(struct ctl_table_set *));
1084extern void retire_sysctl_set(struct ctl_table_set *set);
1085
1086void register_sysctl_root(struct ctl_table_root *root);
1087struct ctl_table_header *__register_sysctl_table(
1088        struct ctl_table_set *set,
1089        const char *path, struct ctl_table *table);
1090struct ctl_table_header *__register_sysctl_paths(
1091        struct ctl_table_set *set,
1092        const struct ctl_path *path, struct ctl_table *table);
1093struct ctl_table_header *register_sysctl(const char *path, struct ctl_table *table);
1094struct ctl_table_header *register_sysctl_table(struct ctl_table * table);
1095struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
1096                                                struct ctl_table *table);
1097
1098void unregister_sysctl_table(struct ctl_table_header * table);
1099
1100extern int sysctl_init(void);
1101#else /* CONFIG_SYSCTL */
1102static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
1103{
1104        return NULL;
1105}
1106
1107static inline struct ctl_table_header *register_sysctl_paths(
1108                        const struct ctl_path *path, struct ctl_table *table)
1109{
1110        return NULL;
1111}
1112
1113static inline void unregister_sysctl_table(struct ctl_table_header * table)
1114{
1115}
1116
1117static inline void setup_sysctl_set(struct ctl_table_set *p,
1118        struct ctl_table_root *root,
1119        int (*is_seen)(struct ctl_table_set *))
1120{
1121}
1122
1123#endif /* CONFIG_SYSCTL */
1124
1125#endif /* __KERNEL__ */
1126
1127#endif /* _LINUX_SYSCTL_H */
1128
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