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
 14  ** to 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  ** --sct
 19  **
 20  ****************************************************************
 21  ****************************************************************
 22  */
 23
 24 #ifndef _LINUX_SYSCTL_H
 25 #define _LINUX_SYSCTL_H
 26
 27 #include <linux/kernel.h>
 28 #include <linux/types.h>
 29 #include <linux/list.h>
 30
 31 struct file;
 32
 33 #define CTL_MAXNAME 10
 34
 35 struct __sysctl_args {
 36 int*name;
 37 int nlen;
 38 void*oldval;
 39 size_t*oldlenp;
 40 void*newval;
 41 size_t newlen;
 42 unsigned long __unused[4];
 43 };
 44
 45 /* Define sysctl names first */
 46
 47 /* Top-level names: */
 48
 49 /* For internal pattern-matching use only: */
 50 #ifdef __KERNEL__
 51 #define CTL_ANY -1/* Matches any name */
 52 #define CTL_NONE 0
 53 #endif
 54
 55 enum
 56 {
 57  CTL_KERN=1,/* General kernel info and control */
 58  CTL_VM=2,/* VM management */
 59  CTL_NET=3,/* Networking */
 60  CTL_PROC=4,/* Process info */
 61  CTL_FS=5,/* Filesystems */
 62  CTL_DEBUG=6,/* Debugging */
 63  CTL_DEV=7,/* Devices */
 64  CTL_BUS=8/* Buses */
 65 };
 66
 67 /* CTL_BUS names: */
 68 enum
 69 {
 70  BUS_ISA=1/* ISA */
 71 };
 72
 73 /* CTL_KERN names: */
 74 enum
 75 {
 76  KERN_OSTYPE=1,/* string: system version */
 77  KERN_OSRELEASE=2,/* string: system release */
 78  KERN_OSREV=3,/* int: system revision */
 79  KERN_VERSION=4,/* string: compile time info */
 80  KERN_SECUREMASK=5,/* struct: maximum rights mask */
 81  KERN_PROF=6,/* table: profiling information */
 82  KERN_NODENAME=7,
 83  KERN_DOMAINNAME=8,
 84
 85  KERN_CAP_BSET=14,/* int: capability bounding set */
 86  KERN_PANIC=15,/* int: panic timeout */
 87  KERN_REALROOTDEV=16,/* real root device to mount after initrd */
 88
 89  KERN_SPARC_REBOOT=21,/* reboot command on Sparc */
 90  KERN_CTLALTDEL=22,/* int: allow ctl-alt-del to reboot */
 91  KERN_PRINTK=23,/* struct: control printk logging parameters */
 92  KERN_NAMETRANS=24,/* Name translation */
 93  KERN_PPC_HTABRECLAIM=25,/* turn htab reclaimation on/off on PPC */
 94  KERN_PPC_ZEROPAGED=26,/* turn idle page zeroing on/off on PPC */
 95  KERN_PPC_POWERSAVE_NAP=27,/* use nap mode for power saving */
 96  KERN_MODPROBE=28,
 97  KERN_SG_BIG_BUFF=29,
 98  KERN_ACCT=30,/* BSD process accounting parameters */
 99  KERN_PPC_L2CR=31,/* l2cr register on PPC */
 100
 101  KERN_RTSIGNR=32,/* Number of rt sigs queued */
 102  KERN_RTSIGMAX=33,/* Max queuable */
 103
 104  KERN_SHMMAX=34,/* long: Maximum shared memory segment */
 105  KERN_MSGMAX=35,/* int: Maximum size of a messege */
 106  KERN_MSGMNB=36,/* int: Maximum message queue size */
 107  KERN_MSGPOOL=37,/* int: Maximum system message pool size */
 108  KERN_SYSRQ=38,/* int: Sysreq enable */
 109  KERN_MAX_THREADS=39,/* int: Maximum nr of threads in the system */
 110  KERN_RANDOM=40,/* Random driver */
 111  KERN_SHMALL=41,/* int: Maximum size of shared memory */
 112  KERN_MSGMNI=42,/* int: msg queue identifiers */
 113  KERN_SEM=43,/* struct: sysv semaphore limits */
 114  KERN_SPARC_STOP_A=44,/* int: Sparc Stop-A enable */
 115  KERN_SHMMNI=45,/* int: shm array identifiers */
 116  KERN_OVERFLOWUID=46,/* int: overflow UID */
 117  KERN_OVERFLOWGID=47,/* int: overflow GID */
 118  KERN_SHMPATH=48,/* string: path to shm fs */
 119  KERN_HOTPLUG=49,/* string: path to hotplug policy agent */
 120 };
 121
 122
 123 /* CTL_VM names: */
 124 enum
 125 {
 126  VM_SWAPCTL=1,/* struct: Set vm swapping control */
 127  VM_SWAPOUT=2,/* int: Linear or sqrt() swapout for hogs */
 128  VM_FREEPG=3,/* struct: Set free page thresholds */
 129  VM_BDFLUSH=4,/* struct: Control buffer cache flushing */
 130  VM_OVERCOMMIT_MEMORY=5,/* Turn off the virtual memory safety limit */
 131  VM_BUFFERMEM=6,/* struct: Set buffer memory thresholds */
 132  VM_PAGECACHE=7,/* struct: Set cache memory thresholds */
 133  VM_PAGERDAEMON=8,/* struct: Control kswapd behaviour */
 134  VM_PGT_CACHE=9,/* struct: Set page table cache parameters */
 135  VM_PAGE_CLUSTER=10/* int: set number of pages to swap together */
 136 };
 137
 138
 139 /* CTL_NET names: */
 140 enum
 141 {
 142  NET_CORE=1,
 143  NET_ETHER=2,
 144  NET_802=3,
 145  NET_UNIX=4,
 146  NET_IPV4=5,
 147  NET_IPX=6,
 148  NET_ATALK=7,
 149  NET_NETROM=8,
 150  NET_AX25=9,
 151  NET_BRIDGE=10,
 152  NET_ROSE=11,
 153  NET_IPV6=12,
 154  NET_X25=13,
 155  NET_TR=14,
 156  NET_DECNET=15,
 157  NET_ECONET=16,
 158  NET_KHTTPD=17
 159 };
 160
 161 /* /proc/sys/kernel/random */
 162 enum
 163 {
 164  RANDOM_POOLSIZE=1,
 165  RANDOM_ENTROPY_COUNT=2,
 166  RANDOM_READ_THRESH=3,
 167  RANDOM_WRITE_THRESH=4,
 168  RANDOM_BOOT_ID=5,
 169  RANDOM_UUID=6
 170 };
 171
 172 /* /proc/sys/bus/isa */
 173 enum
 174 {
 175  BUS_ISA_MEM_BASE=1,
 176  BUS_ISA_PORT_BASE=2,
 177  BUS_ISA_PORT_SHIFT=3
 178 };
 179
 180 /* /proc/sys/net/core */
 181 enum
 182 {
 183  NET_CORE_WMEM_MAX=1,
 184  NET_CORE_RMEM_MAX=2,
 185  NET_CORE_WMEM_DEFAULT=3,
 186  NET_CORE_RMEM_DEFAULT=4,
 187 /* was NET_CORE_DESTROY_DELAY */
 188  NET_CORE_MAX_BACKLOG=6,
 189  NET_CORE_FASTROUTE=7,
 190  NET_CORE_MSG_COST=8,
 191  NET_CORE_MSG_BURST=9,
 192  NET_CORE_OPTMEM_MAX=10,
 193  NET_CORE_HOT_LIST_LENGTH=11,
 194  NET_CORE_DIVERT_VERSION=12,
 195  NET_CORE_NO_CONG_THRESH=13,
 196  NET_CORE_NO_CONG=14,
 197  NET_CORE_LO_CONG=15,
 198  NET_CORE_MOD_CONG=16
 199 };
 200
 201 /* /proc/sys/net/ethernet */
 202
 203 /* /proc/sys/net/802 */
 204
 205 /* /proc/sys/net/unix */
 206
 207 enum
 208 {
 209  NET_UNIX_DESTROY_DELAY=1,
 210  NET_UNIX_DELETE_DELAY=2,
 211  NET_UNIX_MAX_DGRAM_QLEN=3,
 212 };
 213
 214 /* /proc/sys/net/ipv4 */
 215 enum
 216 {
 217 /* v2.0 compatibile variables */
 218  NET_IPV4_FORWARD=8,
 219  NET_IPV4_DYNADDR=9,
 220
 221  NET_IPV4_CONF=16,
 222  NET_IPV4_NEIGH=17,
 223  NET_IPV4_ROUTE=18,
 224  NET_IPV4_FIB_HASH=19,
 225
 226  NET_IPV4_TCP_TIMESTAMPS=33,
 227  NET_IPV4_TCP_WINDOW_SCALING=34,
 228  NET_IPV4_TCP_SACK=35,
 229  NET_IPV4_TCP_RETRANS_COLLAPSE=36,
 230  NET_IPV4_DEFAULT_TTL=37,
 231  NET_IPV4_AUTOCONFIG=38,
 232  NET_IPV4_NO_PMTU_DISC=39,
 233  NET_IPV4_TCP_SYN_RETRIES=40,
 234  NET_IPV4_IPFRAG_HIGH_THRESH=41,
 235  NET_IPV4_IPFRAG_LOW_THRESH=42,
 236  NET_IPV4_IPFRAG_TIME=43,
 237  NET_IPV4_TCP_MAX_KA_PROBES=44,
 238  NET_IPV4_TCP_KEEPALIVE_TIME=45,
 239  NET_IPV4_TCP_KEEPALIVE_PROBES=46,
 240  NET_IPV4_TCP_RETRIES1=47,
 241  NET_IPV4_TCP_RETRIES2=48,
 242  NET_IPV4_TCP_FIN_TIMEOUT=49,
 243  NET_IPV4_IP_MASQ_DEBUG=50,
 244  NET_TCP_SYNCOOKIES=51,
 245  NET_TCP_STDURG=52,
 246  NET_TCP_RFC1337=53,
 247  NET_TCP_SYN_TAILDROP=54,
 248  NET_TCP_MAX_SYN_BACKLOG=55,
 249  NET_IPV4_LOCAL_PORT_RANGE=56,
 250  NET_IPV4_ICMP_ECHO_IGNORE_ALL=57,
 251  NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS=58,
 252  NET_IPV4_ICMP_SOURCEQUENCH_RATE=59,
 253  NET_IPV4_ICMP_DESTUNREACH_RATE=60,
 254  NET_IPV4_ICMP_TIMEEXCEED_RATE=61,
 255  NET_IPV4_ICMP_PARAMPROB_RATE=62,
 256  NET_IPV4_ICMP_ECHOREPLY_RATE=63,
 257  NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES=64,
 258  NET_IPV4_IGMP_MAX_MEMBERSHIPS=65,
 259  NET_TCP_TW_RECYCLE=66,
 260  NET_IPV4_ALWAYS_DEFRAG=67,
 261  NET_IPV4_TCP_KEEPALIVE_INTVL=68,
 262  NET_IPV4_INET_PEER_THRESHOLD=69,
 263  NET_IPV4_INET_PEER_MINTTL=70,
 264  NET_IPV4_INET_PEER_MAXTTL=71,
 265  NET_IPV4_INET_PEER_GC_MINTIME=72,
 266  NET_IPV4_INET_PEER_GC_MAXTIME=73,
 267  NET_TCP_ORPHAN_RETRIES=74,
 268  NET_TCP_ABORT_ON_OVERFLOW=75,
 269  NET_TCP_SYNACK_RETRIES=76,
 270  NET_TCP_MAX_ORPHANS=77,
 271  NET_TCP_MAX_TW_BUCKETS=78,
 272  NET_TCP_FACK=79,
 273  NET_TCP_REORDERING=80,
 274  NET_TCP_ECN=81,
 275  NET_TCP_DSACK=82,
 276  NET_TCP_MEM=83,
 277  NET_TCP_WMEM=84,
 278  NET_TCP_RMEM=85,
 279  NET_TCP_APP_WIN=86,
 280  NET_TCP_ADV_WIN_SCALE=87,
 281  NET_IPV4_NONLOCAL_BIND=88,
 282 };
 283
 284 enum{
 285  NET_IPV4_ROUTE_FLUSH=1,
 286  NET_IPV4_ROUTE_MIN_DELAY=2,
 287  NET_IPV4_ROUTE_MAX_DELAY=3,
 288  NET_IPV4_ROUTE_GC_THRESH=4,
 289  NET_IPV4_ROUTE_MAX_SIZE=5,
 290  NET_IPV4_ROUTE_GC_MIN_INTERVAL=6,
 291  NET_IPV4_ROUTE_GC_TIMEOUT=7,
 292  NET_IPV4_ROUTE_GC_INTERVAL=8,
 293  NET_IPV4_ROUTE_REDIRECT_LOAD=9,
 294  NET_IPV4_ROUTE_REDIRECT_NUMBER=10,
 295  NET_IPV4_ROUTE_REDIRECT_SILENCE=11,
 296  NET_IPV4_ROUTE_ERROR_COST=12,
 297  NET_IPV4_ROUTE_ERROR_BURST=13,
 298  NET_IPV4_ROUTE_GC_ELASTICITY=14,
 299  NET_IPV4_ROUTE_MTU_EXPIRES=15,
 300  NET_IPV4_ROUTE_MIN_PMTU=16,
 301  NET_IPV4_ROUTE_MIN_ADVMSS=17
 302 };
 303
 304 enum
 305 {
 306  NET_PROTO_CONF_ALL=-2,
 307  NET_PROTO_CONF_DEFAULT=-3
 308
 309 /* And device ifindices ... */
 310 };
 311
 312 enum
 313 {
 314  NET_IPV4_CONF_FORWARDING=1,
 315  NET_IPV4_CONF_MC_FORWARDING=2,
 316  NET_IPV4_CONF_PROXY_ARP=3,
 317  NET_IPV4_CONF_ACCEPT_REDIRECTS=4,
 318  NET_IPV4_CONF_SECURE_REDIRECTS=5,
 319  NET_IPV4_CONF_SEND_REDIRECTS=6,
 320  NET_IPV4_CONF_SHARED_MEDIA=7,
 321  NET_IPV4_CONF_RP_FILTER=8,
 322  NET_IPV4_CONF_ACCEPT_SOURCE_ROUTE=9,
 323  NET_IPV4_CONF_BOOTP_RELAY=10,
 324  NET_IPV4_CONF_LOG_MARTIANS=11,
 325  NET_IPV4_CONF_TAG=12
 326 };
 327
 328 /* /proc/sys/net/ipv6 */
 329 enum{
 330  NET_IPV6_CONF=16,
 331  NET_IPV6_NEIGH=17,
 332  NET_IPV6_ROUTE=18
 333 };
 334
 335 enum{
 336  NET_IPV6_ROUTE_FLUSH=1,
 337  NET_IPV6_ROUTE_GC_THRESH=2,
 338  NET_IPV6_ROUTE_MAX_SIZE=3,
 339  NET_IPV6_ROUTE_GC_MIN_INTERVAL=4,
 340  NET_IPV6_ROUTE_GC_TIMEOUT=5,
 341  NET_IPV6_ROUTE_GC_INTERVAL=6,
 342  NET_IPV6_ROUTE_GC_ELASTICITY=7,
 343  NET_IPV6_ROUTE_MTU_EXPIRES=8,
 344  NET_IPV6_ROUTE_MIN_ADVMSS=9
 345 };
 346
 347 enum{
 348  NET_IPV6_FORWARDING=1,
 349  NET_IPV6_HOP_LIMIT=2,
 350  NET_IPV6_MTU=3,
 351  NET_IPV6_ACCEPT_RA=4,
 352  NET_IPV6_ACCEPT_REDIRECTS=5,
 353  NET_IPV6_AUTOCONF=6,
 354  NET_IPV6_DAD_TRANSMITS=7,
 355  NET_IPV6_RTR_SOLICITS=8,
 356  NET_IPV6_RTR_SOLICIT_INTERVAL=9,
 357  NET_IPV6_RTR_SOLICIT_DELAY=10
 358 };
 359
 360 /* /proc/sys/net/<protocol>/neigh/<dev> */
 361 enum{
 362  NET_NEIGH_MCAST_SOLICIT=1,
 363  NET_NEIGH_UCAST_SOLICIT=2,
 364  NET_NEIGH_APP_SOLICIT=3,
 365  NET_NEIGH_RETRANS_TIME=4,
 366  NET_NEIGH_REACHABLE_TIME=5,
 367  NET_NEIGH_DELAY_PROBE_TIME=6,
 368  NET_NEIGH_GC_STALE_TIME=7,
 369  NET_NEIGH_UNRES_QLEN=8,
 370  NET_NEIGH_PROXY_QLEN=9,
 371  NET_NEIGH_ANYCAST_DELAY=10,
 372  NET_NEIGH_PROXY_DELAY=11,
 373  NET_NEIGH_LOCKTIME=12,
 374  NET_NEIGH_GC_INTERVAL=13,
 375  NET_NEIGH_GC_THRESH1=14,
 376  NET_NEIGH_GC_THRESH2=15,
 377  NET_NEIGH_GC_THRESH3=16
 378 };
 379
 380 /* /proc/sys/net/ipx */
 381
 382
 383 /* /proc/sys/net/appletalk */
 384 enum{
 385  NET_ATALK_AARP_EXPIRY_TIME=1,
 386  NET_ATALK_AARP_TICK_TIME=2,
 387  NET_ATALK_AARP_RETRANSMIT_LIMIT=3,
 388  NET_ATALK_AARP_RESOLVE_TIME=4
 389 };
 390
 391
 392 /* /proc/sys/net/netrom */
 393 enum{
 394  NET_NETROM_DEFAULT_PATH_QUALITY=1,
 395  NET_NETROM_OBSOLESCENCE_COUNT_INITIALISER=2,
 396  NET_NETROM_NETWORK_TTL_INITIALISER=3,
 397  NET_NETROM_TRANSPORT_TIMEOUT=4,
 398  NET_NETROM_TRANSPORT_MAXIMUM_TRIES=5,
 399  NET_NETROM_TRANSPORT_ACKNOWLEDGE_DELAY=6,
 400  NET_NETROM_TRANSPORT_BUSY_DELAY=7,
 401  NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
 402  NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
 403  NET_NETROM_ROUTING_CONTROL=10,
 404  NET_NETROM_LINK_FAILS_COUNT=11
 405 };
 406
 407 /* /proc/sys/net/ax25 */
 408 enum{
 409  NET_AX25_IP_DEFAULT_MODE=1,
 410  NET_AX25_DEFAULT_MODE=2,
 411  NET_AX25_BACKOFF_TYPE=3,
 412  NET_AX25_CONNECT_MODE=4,
 413  NET_AX25_STANDARD_WINDOW=5,
 414  NET_AX25_EXTENDED_WINDOW=6,
 415  NET_AX25_T1_TIMEOUT=7,
 416  NET_AX25_T2_TIMEOUT=8,
 417  NET_AX25_T3_TIMEOUT=9,
 418  NET_AX25_IDLE_TIMEOUT=10,
 419  NET_AX25_N2=11,
 420  NET_AX25_PACLEN=12,
 421  NET_AX25_PROTOCOL=13,
 422  NET_AX25_DAMA_SLAVE_TIMEOUT=14
 423 };
 424
 425 /* /proc/sys/net/rose */
 426 enum{
 427  NET_ROSE_RESTART_REQUEST_TIMEOUT=1,
 428  NET_ROSE_CALL_REQUEST_TIMEOUT=2,
 429  NET_ROSE_RESET_REQUEST_TIMEOUT=3,
 430  NET_ROSE_CLEAR_REQUEST_TIMEOUT=4,
 431  NET_ROSE_ACK_HOLD_BACK_TIMEOUT=5,
 432  NET_ROSE_ROUTING_CONTROL=6,
 433  NET_ROSE_LINK_FAIL_TIMEOUT=7,
 434  NET_ROSE_MAX_VCS=8,
 435  NET_ROSE_WINDOW_SIZE=9,
 436  NET_ROSE_NO_ACTIVITY_TIMEOUT=10
 437 };
 438
 439 /* /proc/sys/net/x25 */
 440 enum{
 441  NET_X25_RESTART_REQUEST_TIMEOUT=1,
 442  NET_X25_CALL_REQUEST_TIMEOUT=2,
 443  NET_X25_RESET_REQUEST_TIMEOUT=3,
 444  NET_X25_CLEAR_REQUEST_TIMEOUT=4,
 445  NET_X25_ACK_HOLD_BACK_TIMEOUT=5
 446 };
 447
 448 /* /proc/sys/net/token-ring */
 449 enum
 450 {
 451  NET_TR_RIF_TIMEOUT=1
 452 };
 453
 454 /* /proc/sys/net/decnet/ */
 455 enum{
 456  NET_DECNET_NODE_TYPE =1,
 457  NET_DECNET_NODE_ADDRESS =2,
 458  NET_DECNET_NODE_NAME =3,
 459  NET_DECNET_DEFAULT_DEVICE =4,
 460  NET_DECNET_TIME_WAIT =5,
 461  NET_DECNET_DN_COUNT =6,
 462  NET_DECNET_DI_COUNT =7,
 463  NET_DECNET_DR_COUNT =8,
 464  NET_DECNET_DST_GC_INTERVAL =9,
 465  NET_DECNET_CONF =10,
 466  NET_DECNET_DEBUG_LEVEL =255
 467 };
 468
 469 /* /proc/sys/net/khttpd/ */
 470 enum{
 471  NET_KHTTPD_DOCROOT =1,
 472  NET_KHTTPD_START =2,
 473  NET_KHTTPD_STOP =3,
 474  NET_KHTTPD_UNLOAD =4,
 475  NET_KHTTPD_CLIENTPORT =5,
 476  NET_KHTTPD_PERMREQ =6,
 477  NET_KHTTPD_PERMFORBID =7,
 478  NET_KHTTPD_LOGGING =8,
 479  NET_KHTTPD_SERVERPORT =9,
 480  NET_KHTTPD_DYNAMICSTRING=10,
 481  NET_KHTTPD_SLOPPYMIME =11,
 482  NET_KHTTPD_THREADS =12,
 483  NET_KHTTPD_MAXCONNECT =13
 484 };
 485
 486 /* /proc/sys/net/decnet/conf/<dev> */
 487 enum{
 488  NET_DECNET_CONF_LOOPBACK = -2,
 489  NET_DECNET_CONF_DDCMP = -3,
 490  NET_DECNET_CONF_PPP = -4,
 491  NET_DECNET_CONF_X25 = -5,
 492  NET_DECNET_CONF_GRE = -6,
 493  NET_DECNET_CONF_ETHER = -7
 494
 495 /* ... and ifindex of devices */
 496 };
 497
 498 /* /proc/sys/net/decnet/conf/<dev>/ */
 499 enum{
 500  NET_DECNET_CONF_DEV_PRIORITY =1,
 501  NET_DECNET_CONF_DEV_T1 =2,
 502  NET_DECNET_CONF_DEV_T2 =3,
 503  NET_DECNET_CONF_DEV_T3 =4,
 504  NET_DECNET_CONF_DEV_FORWARDING =5,
 505  NET_DECNET_CONF_DEV_BLKSIZE =6,
 506  NET_DECNET_CONF_DEV_STATE =7
 507 };
 508
 509 /* CTL_PROC names: */
 510
 511 /* CTL_FS names: */
 512 enum
 513 {
 514  FS_NRINODE=1,/* int:current number of allocated inodes */
 515  FS_STATINODE=2,
 516  FS_MAXINODE=3,/* int:maximum number of inodes that can be allocated */
 517  FS_NRDQUOT=4,/* int:current number of allocated dquots */
 518  FS_MAXDQUOT=5,/* int:maximum number of dquots that can be allocated */
 519  FS_NRFILE=6,/* int:current number of allocated filedescriptors */
 520  FS_MAXFILE=7,/* int:maximum number of filedescriptors that can be allocated */
 521  FS_DENTRY=8,
 522  FS_NRSUPER=9,/* int:current number of allocated super_blocks */
 523  FS_MAXSUPER=10,/* int:maximum number of super_blocks that can be allocated */
 524  FS_OVERFLOWUID=11,/* int: overflow UID */
 525  FS_OVERFLOWGID=12,/* int: overflow GID */
 526  FS_LEASES=13,/* int: leases enabled */
 527  FS_DIR_NOTIFY=14,/* int: directory notification enabled */
 528  FS_LEASE_TIME=15,/* int: maximum time to wait for a lease break */
 529 };
 530
 531 /* CTL_DEBUG names: */
 532
 533 /* CTL_DEV names: */
 534 enum{
 535  DEV_CDROM=1,
 536  DEV_HWMON=2,
 537  DEV_PARPORT=3,
 538  DEV_RAID=4,
 539  DEV_MAC_HID=5
 540 };
 541
 542 /* /proc/sys/dev/cdrom */
 543 enum{
 544  DEV_CDROM_INFO=1,
 545  DEV_CDROM_AUTOCLOSE=2,
 546  DEV_CDROM_AUTOEJECT=3,
 547  DEV_CDROM_DEBUG=4,
 548  DEV_CDROM_LOCK=5,
 549  DEV_CDROM_CHECK_MEDIA=6
 550 };
 551
 552 /* /proc/sys/dev/parport */
 553 enum{
 554  DEV_PARPORT_DEFAULT=-3
 555 };
 556
 557 /* /proc/sys/dev/raid */
 558 enum{
 559  DEV_RAID_SPEED_LIMIT_MIN=1,
 560  DEV_RAID_SPEED_LIMIT_MAX=2
 561 };
 562
 563 /* /proc/sys/dev/parport/default */
 564 enum{
 565  DEV_PARPORT_DEFAULT_TIMESLICE=1,
 566  DEV_PARPORT_DEFAULT_SPINTIME=2
 567 };
 568
 569 /* /proc/sys/dev/parport/parport n */
 570 enum{
 571  DEV_PARPORT_SPINTIME=1,
 572  DEV_PARPORT_BASE_ADDR=2,
 573  DEV_PARPORT_IRQ=3,
 574  DEV_PARPORT_DMA=4,
 575  DEV_PARPORT_MODES=5,
 576  DEV_PARPORT_DEVICES=6,
 577  DEV_PARPORT_AUTOPROBE=16
 578 };
 579
 580 /* /proc/sys/dev/parport/parport n/devices/ */
 581 enum{
 582  DEV_PARPORT_DEVICES_ACTIVE=-3,
 583 };
 584
 585 /* /proc/sys/dev/parport/parport n/devices/device n */
 586 enum{
 587  DEV_PARPORT_DEVICE_TIMESLICE=1,
 588 };
 589
 590 /* /proc/sys/dev/mac_hid */
 591 enum{
 592  DEV_MAC_HID_KEYBOARD_SENDS_LINUX_KEYCODES=1,
 593  DEV_MAC_HID_KEYBOARD_LOCK_KEYCODES=2,
 594  DEV_MAC_HID_MOUSE_BUTTON_EMULATION=3,
 595  DEV_MAC_HID_MOUSE_BUTTON2_KEYCODE=4,
 596  DEV_MAC_HID_MOUSE_BUTTON3_KEYCODE=5,
 597  DEV_MAC_HID_ADB_MOUSE_SENDS_KEYCODES=6
 598 };
 599
 600 #ifdef __KERNEL__
 601
 602 extern asmlinkage longsys_sysctl(struct __sysctl_args *);
 603 externvoidsysctl_init(void);
 604
 605 typedefstruct ctl_table ctl_table;
 606
 607 typedefintctl_handler(ctl_table *table,int*name,int nlen,
 608 void*oldval,size_t*oldlenp,
 609 void*newval,size_t newlen,
 610 void**context);
 611
 612 typedefintproc_handler(ctl_table *ctl,int write,struct file * filp,
 613 void*buffer,size_t*lenp);
 614
 615 externintproc_dostring(ctl_table *,int,struct file *,
 616 void*,size_t*);
 617 externintproc_dointvec(ctl_table *,int,struct file *,
 618 void*,size_t*);
 619 externintproc_dointvec_bset(ctl_table *,int,struct file *,
 620 void*,size_t*);
 621 externintproc_dointvec_minmax(ctl_table *,int,struct file *,
 622 void*,size_t*);
 623 externintproc_dointvec_jiffies(ctl_table *,int,struct file *,
 624 void*,size_t*);
 625 externintproc_doulongvec_minmax(ctl_table *,int,struct file *,
 626 void*,size_t*);
 627 externintproc_doulongvec_ms_jiffies_minmax(ctl_table *table,int,
 628 struct file *,void*,size_t*);
 629
 630 externintdo_sysctl(int*name,int nlen,
 631 void*oldval,size_t*oldlenp,
 632 void*newval,size_t newlen);
 633
 634 externintdo_sysctl_strategy(ctl_table *table,
 635 int*name,int nlen,
 636 void*oldval,size_t*oldlenp,
 637 void*newval,size_t newlen,void** context);
 638
 639 extern ctl_handler sysctl_string;
 640 extern ctl_handler sysctl_intvec;
 641 extern ctl_handler sysctl_jiffies;
 642
 643
 644 /*
 645  * Register a set of sysctl names by calling register_sysctl_table
 646  * with an initialised array of ctl_table's. An entry with zero
 647  * ctl_name terminates the table. table->de will be set up by the
 648  * registration and need not be initialised in advance.
 649  *
 650  * sysctl names can be mirrored automatically under /proc/sys. The
 651  * procname supplied controls /proc naming.
 652  *
 653  * The table's mode will be honoured both for sys_sysctl(2) and
 654  * proc-fs access.
 655  *
 656  * Leaf nodes in the sysctl tree will be represented by a single file
 657  * under /proc; non-leaf nodes will be represented by directories. A
 658  * null procname disables /proc mirroring at this node.
 659  *
 660  * sysctl(2) can automatically manage read and write requests through
 661  * the sysctl table. The data and maxlen fields of the ctl_table
 662  * struct enable minimal validation of the values being written to be
 663  * performed, and the mode field allows minimal authentication.
 664  *
 665  * More sophisticated management can be enabled by the provision of a
 666  * strategy routine with the table entry. This will be called before
 667  * any automatic read or write of the data is performed.
 668  *
 669  * The strategy routine may return:
 670  * <0: Error occurred (error is passed to user process)
 671  * 0: OK - proceed with automatic read or write.
 672  * >0: OK - read or write has been done by the strategy routine, so
 673  * return immediately.
 674  *
 675  * There must be a proc_handler routine for any terminal nodes
 676  * mirrored under /proc/sys (non-terminals are handled by a built-in
 677  * directory handler). Several default handlers are available to
 678  * cover common cases.
 679  */
 680
 681 /* A sysctl table is an array of struct ctl_table: */
 682 struct ctl_table
 683 {
 684 int ctl_name;/* Binary ID */
 685 const char*procname;/* Text ID for /proc/sys, or zero */
 686 void*data;
 687 int maxlen;
 688  mode_t mode;
 689  ctl_table *child;
 690  proc_handler *proc_handler;/* Callback for text formatting */
 691  ctl_handler *strategy;/* Callback function for all r/w */
 692 struct proc_dir_entry *de;/* /proc control block */
 693 void*extra1;
 694 void*extra2;
 695 };
 696
 697 /* struct ctl_table_header is used to maintain dynamic lists of
 698  ctl_table trees. */
 699 struct ctl_table_header
 700 {
 701  ctl_table *ctl_table;
 702 struct list_head ctl_entry;
 703 };
 704
 705 struct ctl_table_header *register_sysctl_table(ctl_table * table,
 706 int insert_at_head);
 707 voidunregister_sysctl_table(struct ctl_table_header * table);
 708
 709 #else/* __KERNEL__ */
 710
 711 #endif/* __KERNEL__ */
 712
 713 #endif/* _LINUX_SYSCTL_H */