sysctl.h revision 162383
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 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 33 * $FreeBSD: head/sys/sys/sysctl.h 162383 2006-09-17 20:00:36Z rwatson $ 34 */ 35 36#ifndef _SYS_SYSCTL_H_ 37#define _SYS_SYSCTL_H_ 38 39#include <sys/queue.h> 40 41struct thread; 42/* 43 * Definitions for sysctl call. The sysctl call uses a hierarchical name 44 * for objects that can be examined or modified. The name is expressed as 45 * a sequence of integers. Like a file path name, the meaning of each 46 * component depends on its place in the hierarchy. The top-level and kern 47 * identifiers are defined here, and other identifiers are defined in the 48 * respective subsystem header files. 49 */ 50 51#define CTL_MAXNAME 24 /* largest number of components supported */ 52 53/* 54 * Each subsystem defined by sysctl defines a list of variables 55 * for that subsystem. Each name is either a node with further 56 * levels defined below it, or it is a leaf of some particular 57 * type given below. Each sysctl level defines a set of name/type 58 * pairs to be used by sysctl(8) in manipulating the subsystem. 59 */ 60struct ctlname { 61 char *ctl_name; /* subsystem name */ 62 int ctl_type; /* type of name */ 63}; 64 65#define CTLTYPE 0xf /* Mask for the type */ 66#define CTLTYPE_NODE 1 /* name is a node */ 67#define CTLTYPE_INT 2 /* name describes an integer */ 68#define CTLTYPE_STRING 3 /* name describes a string */ 69#define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ 70#define CTLTYPE_OPAQUE 5 /* name describes a structure */ 71#define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 72#define CTLTYPE_UINT 6 /* name describes an unsigned integer */ 73#define CTLTYPE_LONG 7 /* name describes a long */ 74#define CTLTYPE_ULONG 8 /* name describes an unsigned long */ 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#define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 82#define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 83#define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 84#define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 85#define CTLMASK_SECURE 0x00F00000 /* Secure level */ 86#define CTLFLAG_TUN 0x00080000 /* Tunable variable */ 87#define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 88 89/* 90 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 91 * 92 * Secure when the securelevel is raised to at least N. 93 */ 94#define CTLSHIFT_SECURE 20 95#define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 96#define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 97#define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 98 99/* 100 * USE THIS instead of a hardwired number from the categories below 101 * to get dynamically assigned sysctl entries using the linker-set 102 * technology. This is the way nearly all new sysctl variables should 103 * be implemented. 104 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 105 */ 106#define OID_AUTO (-1) 107 108/* 109 * The starting number for dynamically-assigned entries. WARNING! 110 * ALL static sysctl entries should have numbers LESS than this! 111 */ 112#define CTL_AUTO_START 0x100 113 114#ifdef _KERNEL 115#define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \ 116 struct sysctl_req *req 117 118/* definitions for sysctl_req 'lock' member */ 119#define REQ_UNLOCKED 0 /* not locked and not wired */ 120#define REQ_LOCKED 1 /* locked and not wired */ 121#define REQ_WIRED 2 /* locked and wired */ 122 123/* definitions for sysctl_req 'flags' member */ 124#if defined(__amd64__) || defined(__ia64__) 125#define SCTL_MASK32 1 /* 32 bit emulation */ 126#endif 127 128/* 129 * This describes the access space for a sysctl request. This is needed 130 * so that we can use the interface from the kernel or from user-space. 131 */ 132struct sysctl_req { 133 struct thread *td; /* used for access checking */ 134 int lock; /* locking/wiring state */ 135 void *oldptr; 136 size_t oldlen; 137 size_t oldidx; 138 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 139 void *newptr; 140 size_t newlen; 141 size_t newidx; 142 int (*newfunc)(struct sysctl_req *, void *, size_t); 143 size_t validlen; 144 int flags; 145}; 146 147SLIST_HEAD(sysctl_oid_list, sysctl_oid); 148 149/* 150 * This describes one "oid" in the MIB tree. Potentially more nodes can 151 * be hidden behind it, expanded by the handler. 152 */ 153struct sysctl_oid { 154 struct sysctl_oid_list *oid_parent; 155 SLIST_ENTRY(sysctl_oid) oid_link; 156 int oid_number; 157 u_int oid_kind; 158 void *oid_arg1; 159 int oid_arg2; 160 const char *oid_name; 161 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 162 const char *oid_fmt; 163 int oid_refcnt; 164 const char *oid_descr; 165}; 166 167#define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 168#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 169 170int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 171int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 172int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 173int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS); 174int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 175int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 176 177/* 178 * These functions are used to add/remove an oid from the mib. 179 */ 180void sysctl_register_oid(struct sysctl_oid *oidp); 181void sysctl_unregister_oid(struct sysctl_oid *oidp); 182 183/* Declare a static oid to allow child oids to be added to it. */ 184#define SYSCTL_DECL(name) \ 185 extern struct sysctl_oid_list sysctl_##name##_children 186 187/* Hide these in macros */ 188#define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 189 (oid_ptr)->oid_arg1 190#define SYSCTL_CHILDREN_SET(oid_ptr, val) \ 191 (oid_ptr)->oid_arg1 = (val); 192#define SYSCTL_STATIC_CHILDREN(oid_name) \ 193 (&sysctl_##oid_name##_children) 194 195/* === Structs and macros related to context handling === */ 196 197/* All dynamically created sysctls can be tracked in a context list. */ 198struct sysctl_ctx_entry { 199 struct sysctl_oid *entry; 200 TAILQ_ENTRY(sysctl_ctx_entry) link; 201}; 202 203TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 204 205#define SYSCTL_NODE_CHILDREN(parent, name) \ 206 sysctl_##parent##_##name##_children 207 208#ifndef NO_SYSCTL_DESCR 209#define __DESCR(d) d 210#else 211#define __DESCR(d) "" 212#endif 213 214/* This constructs a "raw" MIB oid. */ 215#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 216 static struct sysctl_oid sysctl__##parent##_##name = { \ 217 &sysctl_##parent##_children, { 0 }, \ 218 nbr, kind, a1, a2, #name, handler, fmt, 0, __DESCR(descr) }; \ 219 DATA_SET(sysctl_set, sysctl__##parent##_##name) 220 221#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 222 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 223 224/* This constructs a node from which other oids can hang. */ 225#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 226 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 227 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 228 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, \ 229 "N", descr) 230 231#define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 232 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 233 0, 0, handler, "N", __DESCR(descr)) 234 235/* Oid for a string. len can be 0 to indicate '\0' termination. */ 236#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 237 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 238 arg, len, sysctl_handle_string, "A", descr) 239 240#define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 241 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 242 arg, len, sysctl_handle_string, "A", __DESCR(descr)) 243 244/* Oid for an int. If ptr is NULL, val is returned. */ 245#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 246 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|(access), \ 247 ptr, val, sysctl_handle_int, "I", descr) 248 249#define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 250 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|(access), \ 251 ptr, val, sysctl_handle_int, "I", __DESCR(descr)) 252 253/* Oid for an unsigned int. If ptr is NULL, val is returned. */ 254#define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 255 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \ 256 ptr, val, sysctl_handle_int, "IU", descr) 257 258#define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 259 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access), \ 260 ptr, val, sysctl_handle_int, "IU", __DESCR(descr)) 261 262#define SYSCTL_XINT(parent, nbr, name, access, ptr, val, descr) \ 263 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \ 264 ptr, val, sysctl_handle_int, "IX", descr) 265 266#define SYSCTL_ADD_XINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 267 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access), \ 268 ptr, val, sysctl_handle_int, "IX", __DESCR(descr)) 269 270/* Oid for a long. The pointer must be non NULL. */ 271#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 272 SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|(access), \ 273 ptr, val, sysctl_handle_long, "L", descr) 274 275#define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 276 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|(access), \ 277 ptr, 0, sysctl_handle_long, "L", __DESCR(descr)) 278 279/* Oid for an unsigned long. The pointer must be non NULL. */ 280#define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 281 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \ 282 ptr, val, sysctl_handle_long, "LU", __DESCR(descr)) 283 284#define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 285 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access), \ 286 ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)) 287 288#define SYSCTL_XLONG(parent, nbr, name, access, ptr, val, descr) \ 289 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \ 290 ptr, val, sysctl_handle_long, "LX", __DESCR(descr)) 291 292#define SYSCTL_ADD_XLONG(ctx, parent, nbr, name, access, ptr, descr) \ 293 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access), \ 294 ptr, 0, sysctl_handle_long, "LX", __DESCR(descr)) 295 296/* Oid for an opaque object. Specified by a pointer and a length. */ 297#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 298 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 299 ptr, len, sysctl_handle_opaque, fmt, descr) 300 301#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\ 302 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 303 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)) 304 305/* Oid for a struct. Specified by a pointer and a type. */ 306#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 307 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 308 ptr, sizeof(struct type), sysctl_handle_opaque, \ 309 "S," #type, descr) 310 311#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 312 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 313 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr)) 314 315/* Oid for a procedure. Specified by a pointer and an arg. */ 316#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 317 SYSCTL_OID(parent, nbr, name, (access), \ 318 ptr, arg, handler, fmt, descr) 319 320#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 321 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 322 ptr, arg, handler, fmt, __DESCR(descr)) 323 324#endif /* _KERNEL */ 325 326/* 327 * Top-level identifiers 328 */ 329#define CTL_UNSPEC 0 /* unused */ 330#define CTL_KERN 1 /* "high kernel": proc, limits */ 331#define CTL_VM 2 /* virtual memory */ 332#define CTL_VFS 3 /* filesystem, mount type is next */ 333#define CTL_NET 4 /* network, see socket.h */ 334#define CTL_DEBUG 5 /* debugging parameters */ 335#define CTL_HW 6 /* generic cpu/io */ 336#define CTL_MACHDEP 7 /* machine dependent */ 337#define CTL_USER 8 /* user-level */ 338#define CTL_P1003_1B 9 /* POSIX 1003.1B */ 339#define CTL_MAXID 10 /* number of valid top-level ids */ 340 341#define CTL_NAMES { \ 342 { 0, 0 }, \ 343 { "kern", CTLTYPE_NODE }, \ 344 { "vm", CTLTYPE_NODE }, \ 345 { "vfs", CTLTYPE_NODE }, \ 346 { "net", CTLTYPE_NODE }, \ 347 { "debug", CTLTYPE_NODE }, \ 348 { "hw", CTLTYPE_NODE }, \ 349 { "machdep", CTLTYPE_NODE }, \ 350 { "user", CTLTYPE_NODE }, \ 351 { "p1003_1b", CTLTYPE_NODE }, \ 352} 353 354/* 355 * CTL_KERN identifiers 356 */ 357#define KERN_OSTYPE 1 /* string: system version */ 358#define KERN_OSRELEASE 2 /* string: system release */ 359#define KERN_OSREV 3 /* int: system revision */ 360#define KERN_VERSION 4 /* string: compile time info */ 361#define KERN_MAXVNODES 5 /* int: max vnodes */ 362#define KERN_MAXPROC 6 /* int: max processes */ 363#define KERN_MAXFILES 7 /* int: max open files */ 364#define KERN_ARGMAX 8 /* int: max arguments to exec */ 365#define KERN_SECURELVL 9 /* int: system security level */ 366#define KERN_HOSTNAME 10 /* string: hostname */ 367#define KERN_HOSTID 11 /* int: host identifier */ 368#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 369#define KERN_VNODE 13 /* struct: vnode structures */ 370#define KERN_PROC 14 /* struct: process entries */ 371#define KERN_FILE 15 /* struct: file entries */ 372#define KERN_PROF 16 /* node: kernel profiling info */ 373#define KERN_POSIX1 17 /* int: POSIX.1 version */ 374#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 375#define KERN_JOB_CONTROL 19 /* int: is job control available */ 376#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 377#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 378#define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 379#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 380#define KERN_OSRELDATE 24 /* int: kernel release date */ 381#define KERN_NTP_PLL 25 /* node: NTP PLL control */ 382#define KERN_BOOTFILE 26 /* string: name of booted kernel */ 383#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 384#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 385#define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 386#define KERN_IPC 30 /* node: anything related to IPC */ 387#define KERN_DUMMY 31 /* unused */ 388#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 389#define KERN_USRSTACK 33 /* int: address of USRSTACK */ 390#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 391#define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 392#define KERN_MAXID 36 /* number of valid kern ids */ 393 394#define CTL_KERN_NAMES { \ 395 { 0, 0 }, \ 396 { "ostype", CTLTYPE_STRING }, \ 397 { "osrelease", CTLTYPE_STRING }, \ 398 { "osrevision", CTLTYPE_INT }, \ 399 { "version", CTLTYPE_STRING }, \ 400 { "maxvnodes", CTLTYPE_INT }, \ 401 { "maxproc", CTLTYPE_INT }, \ 402 { "maxfiles", CTLTYPE_INT }, \ 403 { "argmax", CTLTYPE_INT }, \ 404 { "securelevel", CTLTYPE_INT }, \ 405 { "hostname", CTLTYPE_STRING }, \ 406 { "hostid", CTLTYPE_UINT }, \ 407 { "clockrate", CTLTYPE_STRUCT }, \ 408 { "vnode", CTLTYPE_STRUCT }, \ 409 { "proc", CTLTYPE_STRUCT }, \ 410 { "file", CTLTYPE_STRUCT }, \ 411 { "profiling", CTLTYPE_NODE }, \ 412 { "posix1version", CTLTYPE_INT }, \ 413 { "ngroups", CTLTYPE_INT }, \ 414 { "job_control", CTLTYPE_INT }, \ 415 { "saved_ids", CTLTYPE_INT }, \ 416 { "boottime", CTLTYPE_STRUCT }, \ 417 { "nisdomainname", CTLTYPE_STRING }, \ 418 { "update", CTLTYPE_INT }, \ 419 { "osreldate", CTLTYPE_INT }, \ 420 { "ntp_pll", CTLTYPE_NODE }, \ 421 { "bootfile", CTLTYPE_STRING }, \ 422 { "maxfilesperproc", CTLTYPE_INT }, \ 423 { "maxprocperuid", CTLTYPE_INT }, \ 424 { "ipc", CTLTYPE_NODE }, \ 425 { "dummy", CTLTYPE_INT }, \ 426 { "ps_strings", CTLTYPE_INT }, \ 427 { "usrstack", CTLTYPE_INT }, \ 428 { "logsigexit", CTLTYPE_INT }, \ 429 { "iov_max", CTLTYPE_INT }, \ 430} 431 432/* 433 * CTL_VFS identifiers 434 */ 435#define CTL_VFS_NAMES { \ 436 { "vfsconf", CTLTYPE_STRUCT }, \ 437} 438 439/* 440 * KERN_PROC subtypes 441 */ 442#define KERN_PROC_ALL 0 /* everything */ 443#define KERN_PROC_PID 1 /* by process id */ 444#define KERN_PROC_PGRP 2 /* by process group id */ 445#define KERN_PROC_SESSION 3 /* by session of pid */ 446#define KERN_PROC_TTY 4 /* by controlling tty */ 447#define KERN_PROC_UID 5 /* by effective uid */ 448#define KERN_PROC_RUID 6 /* by real uid */ 449#define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 450#define KERN_PROC_PROC 8 /* only return procs */ 451#define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 452#define KERN_PROC_RGID 10 /* by real group id */ 453#define KERN_PROC_GID 11 /* by effective group id */ 454#define KERN_PROC_PATHNAME 12 /* path to executable */ 455#define KERN_PROC_INC_THREAD 0x10 /* 456 * modifier for pid, pgrp, tty, 457 * uid, ruid, gid, rgid and proc 458 */ 459 460/* 461 * KERN_IPC identifiers 462 */ 463#define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 464#define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 465#define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 466#define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 467#define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 468#define KIPC_MAX_HDR 6 /* int: max total length of headers */ 469#define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 470 471/* 472 * CTL_HW identifiers 473 */ 474#define HW_MACHINE 1 /* string: machine class */ 475#define HW_MODEL 2 /* string: specific machine model */ 476#define HW_NCPU 3 /* int: number of cpus */ 477#define HW_BYTEORDER 4 /* int: machine byte order */ 478#define HW_PHYSMEM 5 /* int: total memory */ 479#define HW_USERMEM 6 /* int: non-kernel memory */ 480#define HW_PAGESIZE 7 /* int: software page size */ 481#define HW_DISKNAMES 8 /* strings: disk drive names */ 482#define HW_DISKSTATS 9 /* struct: diskstats[] */ 483#define HW_FLOATINGPT 10 /* int: has HW floating point? */ 484#define HW_MACHINE_ARCH 11 /* string: machine architecture */ 485#define HW_REALMEM 12 /* int: 'real' memory */ 486#define HW_MAXID 13 /* number of valid hw ids */ 487 488#define CTL_HW_NAMES { \ 489 { 0, 0 }, \ 490 { "machine", CTLTYPE_STRING }, \ 491 { "model", CTLTYPE_STRING }, \ 492 { "ncpu", CTLTYPE_INT }, \ 493 { "byteorder", CTLTYPE_INT }, \ 494 { "physmem", CTLTYPE_ULONG }, \ 495 { "usermem", CTLTYPE_ULONG }, \ 496 { "pagesize", CTLTYPE_INT }, \ 497 { "disknames", CTLTYPE_STRUCT }, \ 498 { "diskstats", CTLTYPE_STRUCT }, \ 499 { "floatingpoint", CTLTYPE_INT }, \ 500 { "realmem", CTLTYPE_ULONG }, \ 501} 502 503/* 504 * CTL_USER definitions 505 */ 506#define USER_CS_PATH 1 /* string: _CS_PATH */ 507#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 508#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 509#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 510#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 511#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 512#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 513#define USER_LINE_MAX 8 /* int: LINE_MAX */ 514#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 515#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 516#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 517#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 518#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 519#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 520#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 521#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 522#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 523#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 524#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 525#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 526#define USER_MAXID 21 /* number of valid user ids */ 527 528#define CTL_USER_NAMES { \ 529 { 0, 0 }, \ 530 { "cs_path", CTLTYPE_STRING }, \ 531 { "bc_base_max", CTLTYPE_INT }, \ 532 { "bc_dim_max", CTLTYPE_INT }, \ 533 { "bc_scale_max", CTLTYPE_INT }, \ 534 { "bc_string_max", CTLTYPE_INT }, \ 535 { "coll_weights_max", CTLTYPE_INT }, \ 536 { "expr_nest_max", CTLTYPE_INT }, \ 537 { "line_max", CTLTYPE_INT }, \ 538 { "re_dup_max", CTLTYPE_INT }, \ 539 { "posix2_version", CTLTYPE_INT }, \ 540 { "posix2_c_bind", CTLTYPE_INT }, \ 541 { "posix2_c_dev", CTLTYPE_INT }, \ 542 { "posix2_char_term", CTLTYPE_INT }, \ 543 { "posix2_fort_dev", CTLTYPE_INT }, \ 544 { "posix2_fort_run", CTLTYPE_INT }, \ 545 { "posix2_localedef", CTLTYPE_INT }, \ 546 { "posix2_sw_dev", CTLTYPE_INT }, \ 547 { "posix2_upe", CTLTYPE_INT }, \ 548 { "stream_max", CTLTYPE_INT }, \ 549 { "tzname_max", CTLTYPE_INT }, \ 550} 551 552#define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 553#define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 554#define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 555#define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 556#define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 557#define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 558#define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 559#define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 560#define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 561#define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 562#define CTL_P1003_1B_FSYNC 11 /* boolean */ 563#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 564#define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 565#define CTL_P1003_1B_TIMERS 14 /* boolean */ 566#define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 567#define CTL_P1003_1B_AIO_MAX 16 /* int */ 568#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 569#define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 570#define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 571#define CTL_P1003_1B_PAGESIZE 20 /* int */ 572#define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 573#define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 574#define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 575#define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 576#define CTL_P1003_1B_TIMER_MAX 25 /* int */ 577 578#define CTL_P1003_1B_MAXID 26 579 580#define CTL_P1003_1B_NAMES { \ 581 { 0, 0 }, \ 582 { "asynchronous_io", CTLTYPE_INT }, \ 583 { "mapped_files", CTLTYPE_INT }, \ 584 { "memlock", CTLTYPE_INT }, \ 585 { "memlock_range", CTLTYPE_INT }, \ 586 { "memory_protection", CTLTYPE_INT }, \ 587 { "message_passing", CTLTYPE_INT }, \ 588 { "prioritized_io", CTLTYPE_INT }, \ 589 { "priority_scheduling", CTLTYPE_INT }, \ 590 { "realtime_signals", CTLTYPE_INT }, \ 591 { "semaphores", CTLTYPE_INT }, \ 592 { "fsync", CTLTYPE_INT }, \ 593 { "shared_memory_objects", CTLTYPE_INT }, \ 594 { "synchronized_io", CTLTYPE_INT }, \ 595 { "timers", CTLTYPE_INT }, \ 596 { "aio_listio_max", CTLTYPE_INT }, \ 597 { "aio_max", CTLTYPE_INT }, \ 598 { "aio_prio_delta_max", CTLTYPE_INT }, \ 599 { "delaytimer_max", CTLTYPE_INT }, \ 600 { "mq_open_max", CTLTYPE_INT }, \ 601 { "pagesize", CTLTYPE_INT }, \ 602 { "rtsig_max", CTLTYPE_INT }, \ 603 { "nsems_max", CTLTYPE_INT }, \ 604 { "sem_value_max", CTLTYPE_INT }, \ 605 { "sigqueue_max", CTLTYPE_INT }, \ 606 { "timer_max", CTLTYPE_INT }, \ 607} 608 609#ifdef _KERNEL 610 611/* 612 * Declare some common oids. 613 */ 614extern struct sysctl_oid_list sysctl__children; 615SYSCTL_DECL(_kern); 616SYSCTL_DECL(_kern_ipc); 617SYSCTL_DECL(_sysctl); 618SYSCTL_DECL(_vm); 619SYSCTL_DECL(_vm_stats); 620SYSCTL_DECL(_vm_stats_misc); 621SYSCTL_DECL(_vfs); 622SYSCTL_DECL(_net); 623SYSCTL_DECL(_debug); 624SYSCTL_DECL(_debug_sizeof); 625SYSCTL_DECL(_hw); 626SYSCTL_DECL(_hw_bus); 627SYSCTL_DECL(_machdep); 628SYSCTL_DECL(_user); 629SYSCTL_DECL(_compat); 630SYSCTL_DECL(_regression); 631SYSCTL_DECL(_security); 632SYSCTL_DECL(_security_bsd); 633 634extern char machine[]; 635extern char osrelease[]; 636extern char ostype[]; 637extern char kern_ident[]; 638 639/* Dynamic oid handling */ 640struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 641 struct sysctl_oid_list *parent, int nbr, const char *name, 642 int kind, void *arg1, int arg2, 643 int (*handler) (SYSCTL_HANDLER_ARGS), 644 const char *fmt, const char *descr); 645int sysctl_move_oid(struct sysctl_oid *oidp, 646 struct sysctl_oid_list *parent); 647int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 648int sysctl_ctx_init(struct sysctl_ctx_list *clist); 649int sysctl_ctx_free(struct sysctl_ctx_list *clist); 650struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 651 struct sysctl_oid *oidp); 652struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 653 struct sysctl_oid *oidp); 654int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 655 struct sysctl_oid *oidp); 656 657int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 658 size_t *oldlenp, void *new, size_t newlen, 659 size_t *retval, int flags); 660int kernel_sysctlbyname(struct thread *td, char *name, 661 void *old, size_t *oldlenp, void *new, size_t newlen, 662 size_t *retval, int flags); 663int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 664 size_t *oldlenp, int inkernel, void *new, size_t newlen, 665 size_t *retval, int flags); 666int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 667 int *nindx, struct sysctl_req *req); 668int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 669 670#else /* !_KERNEL */ 671#include <sys/cdefs.h> 672 673__BEGIN_DECLS 674int sysctl(int *, u_int, void *, size_t *, void *, size_t); 675int sysctlbyname(const char *, void *, size_t *, void *, size_t); 676int sysctlnametomib(const char *, int *, size_t *); 677__END_DECLS 678#endif /* _KERNEL */ 679 680#endif /* !_SYS_SYSCTL_H_ */ 681