sysctl.h revision 38859
1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Mike Karels at Berkeley Software Design, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 37 * $Id: sysctl.h,v 1.62 1998/08/24 08:39:37 dfr Exp $ 38 */ 39 40#ifndef _SYS_SYSCTL_H_ 41#define _SYS_SYSCTL_H_ 42 43#include <sys/_posix.h> 44 45/* 46 * Definitions for sysctl call. The sysctl call uses a hierarchical name 47 * for objects that can be examined or modified. The name is expressed as 48 * a sequence of integers. Like a file path name, the meaning of each 49 * component depends on its place in the hierarchy. The top-level and kern 50 * identifiers are defined here, and other identifiers are defined in the 51 * respective subsystem header files. 52 */ 53 54#define CTL_MAXNAME 12 /* largest number of components supported */ 55 56/* 57 * Each subsystem defined by sysctl defines a list of variables 58 * for that subsystem. Each name is either a node with further 59 * levels defined below it, or it is a leaf of some particular 60 * type given below. Each sysctl level defines a set of name/type 61 * pairs to be used by sysctl(1) in manipulating the subsystem. 62 */ 63struct ctlname { 64 char *ctl_name; /* subsystem name */ 65 int ctl_type; /* type of name */ 66}; 67 68#define CTLTYPE 0xf /* Mask for the type */ 69#define CTLTYPE_NODE 1 /* name is a node */ 70#define CTLTYPE_INT 2 /* name describes an integer */ 71#define CTLTYPE_STRING 3 /* name describes a string */ 72#define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ 73#define CTLTYPE_OPAQUE 5 /* name describes a structure */ 74#define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 75 76#define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 77#define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 78#define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 79#define CTLFLAG_NOLOCK 0x20000000 /* XXX Don't Lock */ 80#define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 81 82/* 83 * USE THIS instead of a hardwired number from the categories below 84 * to get dynamically assigned sysctl entries using the linker-set 85 * technology. This is the way nearly all new sysctl variables should 86 * be implemented. 87 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 88 */ 89#define OID_AUTO (-1) 90 91#ifdef KERNEL 92#define SYSCTL_HANDLER_ARGS (struct sysctl_oid *oidp, void *arg1, int arg2, \ 93 struct sysctl_req *req) 94 95/* 96 * This describes the access space for a sysctl request. This is needed 97 * so that we can use the interface from the kernel or from user-space. 98 */ 99struct sysctl_req { 100 struct proc *p; 101 int lock; 102 void *oldptr; 103 size_t oldlen; 104 size_t oldidx; 105 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 106 void *newptr; 107 size_t newlen; 108 size_t newidx; 109 int (*newfunc)(struct sysctl_req *, void *, size_t); 110}; 111 112/* 113 * This describes one "oid" in the MIB tree. Potentially more nodes can 114 * be hidden behind it, expanded by the handler. 115 */ 116struct sysctl_oid { 117 int oid_number; 118 int oid_kind; 119 void *oid_arg1; 120 int oid_arg2; 121 const char *oid_name; 122 int (*oid_handler) SYSCTL_HANDLER_ARGS; 123 const char *oid_fmt; 124}; 125 126#define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 127#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 128 129int sysctl_handle_int SYSCTL_HANDLER_ARGS; 130int sysctl_handle_long SYSCTL_HANDLER_ARGS; 131int sysctl_handle_intptr SYSCTL_HANDLER_ARGS; 132int sysctl_handle_string SYSCTL_HANDLER_ARGS; 133int sysctl_handle_opaque SYSCTL_HANDLER_ARGS; 134 135/* This constructs a "raw" MIB oid. */ 136#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 137 static const struct sysctl_oid sysctl__##parent##_##name = { \ 138 nbr, kind, a1, a2, #name, handler, fmt }; \ 139 TEXT_SET(sysctl_##parent, sysctl__##parent##_##name) 140 141/* This constructs a node from which other oids can hang. */ 142#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 143 extern struct linker_set sysctl_##parent##_##name; \ 144 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access, \ 145 (void*)&sysctl_##parent##_##name, 0, handler, "N", descr); \ 146 TEXT_SET(sysctl_##parent##_##name, sysctl__##parent##_##name) 147 148/* Oid for a string. len can be 0 to indicate '\0' termination. */ 149#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 150 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \ 151 arg, len, sysctl_handle_string, "A", descr) 152 153/* Oid for an int. If ptr is NULL, val is returned. */ 154#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 155 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \ 156 ptr, val, sysctl_handle_int, "I", descr) 157 158/* Oid for a long. If ptr is NULL, val is returned. */ 159#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 160 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \ 161 ptr, val, sysctl_handle_long, "L", descr) 162 163/* Oid for an intptr_t. If ptr is NULL, val is returned. */ 164#define SYSCTL_INTPTR(parent, nbr, name, access, ptr, val, descr) \ 165 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \ 166 ptr, val, sysctl_handle_intptr, "P", descr) 167 168/* Oid for an opaque object. Specified by a pointer and a length. */ 169#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 170 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \ 171 ptr, len, sysctl_handle_opaque, fmt, descr) 172 173/* Oid for a struct. Specified by a pointer and a type. */ 174#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 175 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \ 176 ptr, sizeof(struct type), sysctl_handle_opaque, \ 177 "S," #type, descr) 178 179/* Oid for a procedure. Specified by a pointer and an arg. */ 180#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 181 SYSCTL_OID(parent, nbr, name, access, \ 182 ptr, arg, handler, fmt, descr) 183#endif /* KERNEL */ 184 185/* 186 * Top-level identifiers 187 */ 188#define CTL_UNSPEC 0 /* unused */ 189#define CTL_KERN 1 /* "high kernel": proc, limits */ 190#define CTL_VM 2 /* virtual memory */ 191#define CTL_VFS 3 /* file system, mount type is next */ 192#define CTL_NET 4 /* network, see socket.h */ 193#define CTL_DEBUG 5 /* debugging parameters */ 194#define CTL_HW 6 /* generic cpu/io */ 195#define CTL_MACHDEP 7 /* machine dependent */ 196#define CTL_USER 8 /* user-level */ 197#define CTL_P1003_1B 9 /* POSIX 1003.1B */ 198#define CTL_MAXID 10 /* number of valid top-level ids */ 199 200#define CTL_NAMES { \ 201 { 0, 0 }, \ 202 { "kern", CTLTYPE_NODE }, \ 203 { "vm", CTLTYPE_NODE }, \ 204 { "vfs", CTLTYPE_NODE }, \ 205 { "net", CTLTYPE_NODE }, \ 206 { "debug", CTLTYPE_NODE }, \ 207 { "hw", CTLTYPE_NODE }, \ 208 { "machdep", CTLTYPE_NODE }, \ 209 { "user", CTLTYPE_NODE }, \ 210 { "p1003_1b", CTLTYPE_NODE }, \ 211} 212 213/* 214 * CTL_KERN identifiers 215 */ 216#define KERN_OSTYPE 1 /* string: system version */ 217#define KERN_OSRELEASE 2 /* string: system release */ 218#define KERN_OSREV 3 /* int: system revision */ 219#define KERN_VERSION 4 /* string: compile time info */ 220#define KERN_MAXVNODES 5 /* int: max vnodes */ 221#define KERN_MAXPROC 6 /* int: max processes */ 222#define KERN_MAXFILES 7 /* int: max open files */ 223#define KERN_ARGMAX 8 /* int: max arguments to exec */ 224#define KERN_SECURELVL 9 /* int: system security level */ 225#define KERN_HOSTNAME 10 /* string: hostname */ 226#define KERN_HOSTID 11 /* int: host identifier */ 227#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 228#define KERN_VNODE 13 /* struct: vnode structures */ 229#define KERN_PROC 14 /* struct: process entries */ 230#define KERN_FILE 15 /* struct: file entries */ 231#define KERN_PROF 16 /* node: kernel profiling info */ 232#define KERN_POSIX1 17 /* int: POSIX.1 version */ 233#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 234#define KERN_JOB_CONTROL 19 /* int: is job control available */ 235#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 236#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 237#define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 238#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 239#define KERN_OSRELDATE 24 /* int: OS release date */ 240#define KERN_NTP_PLL 25 /* node: NTP PLL control */ 241#define KERN_BOOTFILE 26 /* string: name of booted kernel */ 242#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 243#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 244#define KERN_DUMPDEV 29 /* dev_t: device to dump on */ 245#define KERN_IPC 30 /* node: anything related to IPC */ 246#define KERN_DUMMY 31 /* unused */ 247#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 248#define KERN_USRSTACK 33 /* int: address of USRSTACK */ 249#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 250#define KERN_MAXID 35 /* number of valid kern ids */ 251 252#define CTL_KERN_NAMES { \ 253 { 0, 0 }, \ 254 { "ostype", CTLTYPE_STRING }, \ 255 { "osrelease", CTLTYPE_STRING }, \ 256 { "osrevision", CTLTYPE_INT }, \ 257 { "version", CTLTYPE_STRING }, \ 258 { "maxvnodes", CTLTYPE_INT }, \ 259 { "maxproc", CTLTYPE_INT }, \ 260 { "maxfiles", CTLTYPE_INT }, \ 261 { "argmax", CTLTYPE_INT }, \ 262 { "securelevel", CTLTYPE_INT }, \ 263 { "hostname", CTLTYPE_STRING }, \ 264 { "hostid", CTLTYPE_INT }, \ 265 { "clockrate", CTLTYPE_STRUCT }, \ 266 { "vnode", CTLTYPE_STRUCT }, \ 267 { "proc", CTLTYPE_STRUCT }, \ 268 { "file", CTLTYPE_STRUCT }, \ 269 { "profiling", CTLTYPE_NODE }, \ 270 { "posix1version", CTLTYPE_INT }, \ 271 { "ngroups", CTLTYPE_INT }, \ 272 { "job_control", CTLTYPE_INT }, \ 273 { "saved_ids", CTLTYPE_INT }, \ 274 { "boottime", CTLTYPE_STRUCT }, \ 275 { "nisdomainname", CTLTYPE_STRING }, \ 276 { "update", CTLTYPE_INT }, \ 277 { "osreldate", CTLTYPE_INT }, \ 278 { "ntp_pll", CTLTYPE_NODE }, \ 279 { "bootfile", CTLTYPE_STRING }, \ 280 { "maxfilesperproc", CTLTYPE_INT }, \ 281 { "maxprocperuid", CTLTYPE_INT }, \ 282 { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \ 283 { "ipc", CTLTYPE_NODE }, \ 284 { "dummy", CTLTYPE_INT }, \ 285 { "ps_strings", CTLTYPE_INT }, \ 286 { "usrstack", CTLTYPE_INT }, \ 287 { "logsigexit", CTLTYPE_INT }, \ 288} 289 290/* 291 * CTL_VFS identifiers 292 */ 293#define CTL_VFS_NAMES { \ 294 { "vfsconf", CTLTYPE_STRUCT }, \ 295} 296 297/* 298 * KERN_PROC subtypes 299 */ 300#define KERN_PROC_ALL 0 /* everything */ 301#define KERN_PROC_PID 1 /* by process id */ 302#define KERN_PROC_PGRP 2 /* by process group id */ 303#define KERN_PROC_SESSION 3 /* by session of pid */ 304#define KERN_PROC_TTY 4 /* by controlling tty */ 305#define KERN_PROC_UID 5 /* by effective uid */ 306#define KERN_PROC_RUID 6 /* by real uid */ 307 308/* 309 * KERN_IPC identifiers 310 */ 311#define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 312#define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 313#define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 314#define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 315#define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 316#define KIPC_MAX_HDR 6 /* int: max total length of headers */ 317#define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 318#define KIPC_MBSTAT 8 /* struct: mbuf usage statistics */ 319#define KIPC_NMBCLUSTERS 9 /* int: maximum mbuf clusters */ 320 321/* 322 * CTL_HW identifiers 323 */ 324#define HW_MACHINE 1 /* string: machine class */ 325#define HW_MODEL 2 /* string: specific machine model */ 326#define HW_NCPU 3 /* int: number of cpus */ 327#define HW_BYTEORDER 4 /* int: machine byte order */ 328#define HW_PHYSMEM 5 /* int: total memory */ 329#define HW_USERMEM 6 /* int: non-kernel memory */ 330#define HW_PAGESIZE 7 /* int: software page size */ 331#define HW_DISKNAMES 8 /* strings: disk drive names */ 332#define HW_DISKSTATS 9 /* struct: diskstats[] */ 333#define HW_FLOATINGPT 10 /* int: has HW floating point? */ 334#define HW_MACHINE_ARCH 11 /* string: machine architecture */ 335#define HW_MAXID 12 /* number of valid hw ids */ 336 337#define CTL_HW_NAMES { \ 338 { 0, 0 }, \ 339 { "machine", CTLTYPE_STRING }, \ 340 { "model", CTLTYPE_STRING }, \ 341 { "ncpu", CTLTYPE_INT }, \ 342 { "byteorder", CTLTYPE_INT }, \ 343 { "physmem", CTLTYPE_INT }, \ 344 { "usermem", CTLTYPE_INT }, \ 345 { "pagesize", CTLTYPE_INT }, \ 346 { "disknames", CTLTYPE_STRUCT }, \ 347 { "diskstats", CTLTYPE_STRUCT }, \ 348 { "floatingpoint", CTLTYPE_INT }, \ 349} 350 351/* 352 * CTL_USER definitions 353 */ 354#define USER_CS_PATH 1 /* string: _CS_PATH */ 355#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 356#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 357#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 358#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 359#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 360#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 361#define USER_LINE_MAX 8 /* int: LINE_MAX */ 362#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 363#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 364#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 365#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 366#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 367#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 368#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 369#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 370#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 371#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 372#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 373#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 374#define USER_MAXID 21 /* number of valid user ids */ 375 376#define CTL_USER_NAMES { \ 377 { 0, 0 }, \ 378 { "cs_path", CTLTYPE_STRING }, \ 379 { "bc_base_max", CTLTYPE_INT }, \ 380 { "bc_dim_max", CTLTYPE_INT }, \ 381 { "bc_scale_max", CTLTYPE_INT }, \ 382 { "bc_string_max", CTLTYPE_INT }, \ 383 { "coll_weights_max", CTLTYPE_INT }, \ 384 { "expr_nest_max", CTLTYPE_INT }, \ 385 { "line_max", CTLTYPE_INT }, \ 386 { "re_dup_max", CTLTYPE_INT }, \ 387 { "posix2_version", CTLTYPE_INT }, \ 388 { "posix2_c_bind", CTLTYPE_INT }, \ 389 { "posix2_c_dev", CTLTYPE_INT }, \ 390 { "posix2_char_term", CTLTYPE_INT }, \ 391 { "posix2_fort_dev", CTLTYPE_INT }, \ 392 { "posix2_fort_run", CTLTYPE_INT }, \ 393 { "posix2_localedef", CTLTYPE_INT }, \ 394 { "posix2_sw_dev", CTLTYPE_INT }, \ 395 { "posix2_upe", CTLTYPE_INT }, \ 396 { "stream_max", CTLTYPE_INT }, \ 397 { "tzname_max", CTLTYPE_INT }, \ 398} 399 400#define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 401#define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 402#define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 403#define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 404#define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 405#define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 406#define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 407#define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 408#define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 409#define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 410#define CTL_P1003_1B_FSYNC 11 /* boolean */ 411#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 412#define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 413#define CTL_P1003_1B_TIMERS 14 /* boolean */ 414#define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 415#define CTL_P1003_1B_AIO_MAX 16 /* int */ 416#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 417#define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 418#define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 419#define CTL_P1003_1B_PAGESIZE 20 /* int */ 420#define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 421#define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 422#define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 423#define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 424#define CTL_P1003_1B_TIMER_MAX 25 /* int */ 425 426#define CTL_P1003_1B_MAXID 26 427 428#define CTL_P1003_1B_NAMES { \ 429 { 0, 0 }, \ 430 { "asynchronous_io", CTLTYPE_INT }, \ 431 { "mapped_files", CTLTYPE_INT }, \ 432 { "memlock", CTLTYPE_INT }, \ 433 { "memlock_range", CTLTYPE_INT }, \ 434 { "memory_protection", CTLTYPE_INT }, \ 435 { "message_passing", CTLTYPE_INT }, \ 436 { "prioritized_io", CTLTYPE_INT }, \ 437 { "priority_scheduling", CTLTYPE_INT }, \ 438 { "realtime_signals", CTLTYPE_INT }, \ 439 { "semaphores", CTLTYPE_INT }, \ 440 { "fsync", CTLTYPE_INT }, \ 441 { "shared_memory_objects", CTLTYPE_INT }, \ 442 { "synchronized_io", CTLTYPE_INT }, \ 443 { "timers", CTLTYPE_INT }, \ 444 { "aio_listio_max", CTLTYPE_INT }, \ 445 { "aio_max", CTLTYPE_INT }, \ 446 { "aio_prio_delta_max", CTLTYPE_INT }, \ 447 { "delaytimer_max", CTLTYPE_INT }, \ 448 { "mq_open_max", CTLTYPE_INT }, \ 449 { "pagesize", CTLTYPE_INT }, \ 450 { "rtsig_max", CTLTYPE_INT }, \ 451 { "nsems_max", CTLTYPE_INT }, \ 452 { "sem_value_max", CTLTYPE_INT }, \ 453 { "sigqueue_max", CTLTYPE_INT }, \ 454 { "timer_max", CTLTYPE_INT }, \ 455} 456 457#ifdef KERNEL 458 459extern char machine[]; 460extern char osrelease[]; 461extern char ostype[]; 462 463int kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old, 464 size_t *oldlenp, void *new, size_t newlen, 465 size_t *retval); 466int userland_sysctl(struct proc *p, int *name, u_int namelen, void *old, 467 size_t *oldlenp, int inkernel, void *new, size_t newlen, 468 size_t *retval); 469 470#else /* !KERNEL */ 471#include <sys/cdefs.h> 472 473__BEGIN_DECLS 474int sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 475int sysctlbyname __P((const char *, void *, size_t *, void *, size_t)); 476__END_DECLS 477#endif /* KERNEL */ 478 479#endif /* !_SYS_SYSCTL_H_ */ 480