sysctl.h revision 181888
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 181888 2008-08-20 01:24:55Z julian $ 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_quad(SYSCTL_HANDLER_ARGS); 174int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS); 175int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 176int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 177 178/* 179 * These functions are used to add/remove an oid from the mib. 180 */ 181void sysctl_register_oid(struct sysctl_oid *oidp); 182void sysctl_unregister_oid(struct sysctl_oid *oidp); 183 184/* Declare a static oid to allow child oids to be added to it. */ 185#define SYSCTL_DECL(name) \ 186 extern struct sysctl_oid_list sysctl_##name##_children 187 188/* Hide these in macros */ 189#define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 190 (oid_ptr)->oid_arg1 191#define SYSCTL_CHILDREN_SET(oid_ptr, val) \ 192 (oid_ptr)->oid_arg1 = (val); 193#define SYSCTL_STATIC_CHILDREN(oid_name) \ 194 (&sysctl_##oid_name##_children) 195 196/* === Structs and macros related to context handling === */ 197 198/* All dynamically created sysctls can be tracked in a context list. */ 199struct sysctl_ctx_entry { 200 struct sysctl_oid *entry; 201 TAILQ_ENTRY(sysctl_ctx_entry) link; 202}; 203 204TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 205 206#define SYSCTL_NODE_CHILDREN(parent, name) \ 207 sysctl_##parent##_##name##_children 208 209#ifndef NO_SYSCTL_DESCR 210#define __DESCR(d) d 211#else 212#define __DESCR(d) "" 213#endif 214 215/* This constructs a "raw" MIB oid. */ 216#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 217 static struct sysctl_oid sysctl__##parent##_##name = { \ 218 &sysctl_##parent##_children, { 0 }, nbr, kind, \ 219 a1, a2, #name, handler, fmt, 0, __DESCR(descr), 0, 0 }; \ 220 DATA_SET(sysctl_set, sysctl__##parent##_##name) 221 222#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 223 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 224 225/* This constructs a node from which other oids can hang. */ 226#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 227 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 228 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 229 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "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 a quad. The pointer must be non NULL. */ 297#define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 298 SYSCTL_OID(parent, nbr, name, CTLTYPE_QUAD|(access), \ 299 ptr, val, sysctl_handle_quad, "Q", __DESCR(descr)) 300 301#define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 302 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_QUAD|(access), \ 303 ptr, 0, sysctl_handle_quad, "Q", __DESCR(descr)) 304 305/* Oid for an opaque object. Specified by a pointer and a length. */ 306#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 307 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 308 ptr, len, sysctl_handle_opaque, fmt, descr) 309 310#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\ 311 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 312 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)) 313 314/* Oid for a struct. Specified by a pointer and a type. */ 315#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 316 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 317 ptr, sizeof(struct type), sysctl_handle_opaque, \ 318 "S," #type, descr) 319 320#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 321 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 322 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr)) 323 324/* Oid for a procedure. Specified by a pointer and an arg. */ 325#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 326 SYSCTL_OID(parent, nbr, name, (access), \ 327 ptr, arg, handler, fmt, descr) 328 329#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 330 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 331 ptr, arg, handler, fmt, __DESCR(descr)) 332 333/* 334 * A macro to generate a read-only sysctl to indicate the presense of optional 335 * kernel features. 336 */ 337#define FEATURE(name, desc) \ 338 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD, 0, 1, desc) 339 340#endif /* _KERNEL */ 341 342/* 343 * Top-level identifiers 344 */ 345#define CTL_UNSPEC 0 /* unused */ 346#define CTL_KERN 1 /* "high kernel": proc, limits */ 347#define CTL_VM 2 /* virtual memory */ 348#define CTL_VFS 3 /* filesystem, mount type is next */ 349#define CTL_NET 4 /* network, see socket.h */ 350#define CTL_DEBUG 5 /* debugging parameters */ 351#define CTL_HW 6 /* generic cpu/io */ 352#define CTL_MACHDEP 7 /* machine dependent */ 353#define CTL_USER 8 /* user-level */ 354#define CTL_P1003_1B 9 /* POSIX 1003.1B */ 355#define CTL_MAXID 10 /* number of valid top-level ids */ 356 357#define CTL_NAMES { \ 358 { 0, 0 }, \ 359 { "kern", CTLTYPE_NODE }, \ 360 { "vm", CTLTYPE_NODE }, \ 361 { "vfs", CTLTYPE_NODE }, \ 362 { "net", CTLTYPE_NODE }, \ 363 { "debug", CTLTYPE_NODE }, \ 364 { "hw", CTLTYPE_NODE }, \ 365 { "machdep", CTLTYPE_NODE }, \ 366 { "user", CTLTYPE_NODE }, \ 367 { "p1003_1b", CTLTYPE_NODE }, \ 368} 369 370/* 371 * CTL_KERN identifiers 372 */ 373#define KERN_OSTYPE 1 /* string: system version */ 374#define KERN_OSRELEASE 2 /* string: system release */ 375#define KERN_OSREV 3 /* int: system revision */ 376#define KERN_VERSION 4 /* string: compile time info */ 377#define KERN_MAXVNODES 5 /* int: max vnodes */ 378#define KERN_MAXPROC 6 /* int: max processes */ 379#define KERN_MAXFILES 7 /* int: max open files */ 380#define KERN_ARGMAX 8 /* int: max arguments to exec */ 381#define KERN_SECURELVL 9 /* int: system security level */ 382#define KERN_HOSTNAME 10 /* string: hostname */ 383#define KERN_HOSTID 11 /* int: host identifier */ 384#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 385#define KERN_VNODE 13 /* struct: vnode structures */ 386#define KERN_PROC 14 /* struct: process entries */ 387#define KERN_FILE 15 /* struct: file entries */ 388#define KERN_PROF 16 /* node: kernel profiling info */ 389#define KERN_POSIX1 17 /* int: POSIX.1 version */ 390#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 391#define KERN_JOB_CONTROL 19 /* int: is job control available */ 392#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 393#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 394#define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 395#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 396#define KERN_OSRELDATE 24 /* int: kernel release date */ 397#define KERN_NTP_PLL 25 /* node: NTP PLL control */ 398#define KERN_BOOTFILE 26 /* string: name of booted kernel */ 399#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 400#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 401#define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 402#define KERN_IPC 30 /* node: anything related to IPC */ 403#define KERN_DUMMY 31 /* unused */ 404#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 405#define KERN_USRSTACK 33 /* int: address of USRSTACK */ 406#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 407#define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 408#define KERN_HOSTUUID 36 /* string: host UUID identifier */ 409#define KERN_ARND 37 /* int: from arc4rand() */ 410#define KERN_MAXID 38 /* number of valid kern ids */ 411 412#define CTL_KERN_NAMES { \ 413 { 0, 0 }, \ 414 { "ostype", CTLTYPE_STRING }, \ 415 { "osrelease", CTLTYPE_STRING }, \ 416 { "osrevision", CTLTYPE_INT }, \ 417 { "version", CTLTYPE_STRING }, \ 418 { "maxvnodes", CTLTYPE_INT }, \ 419 { "maxproc", CTLTYPE_INT }, \ 420 { "maxfiles", CTLTYPE_INT }, \ 421 { "argmax", CTLTYPE_INT }, \ 422 { "securelevel", CTLTYPE_INT }, \ 423 { "hostname", CTLTYPE_STRING }, \ 424 { "hostid", CTLTYPE_UINT }, \ 425 { "clockrate", CTLTYPE_STRUCT }, \ 426 { "vnode", CTLTYPE_STRUCT }, \ 427 { "proc", CTLTYPE_STRUCT }, \ 428 { "file", CTLTYPE_STRUCT }, \ 429 { "profiling", CTLTYPE_NODE }, \ 430 { "posix1version", CTLTYPE_INT }, \ 431 { "ngroups", CTLTYPE_INT }, \ 432 { "job_control", CTLTYPE_INT }, \ 433 { "saved_ids", CTLTYPE_INT }, \ 434 { "boottime", CTLTYPE_STRUCT }, \ 435 { "nisdomainname", CTLTYPE_STRING }, \ 436 { "update", CTLTYPE_INT }, \ 437 { "osreldate", CTLTYPE_INT }, \ 438 { "ntp_pll", CTLTYPE_NODE }, \ 439 { "bootfile", CTLTYPE_STRING }, \ 440 { "maxfilesperproc", CTLTYPE_INT }, \ 441 { "maxprocperuid", CTLTYPE_INT }, \ 442 { "ipc", CTLTYPE_NODE }, \ 443 { "dummy", CTLTYPE_INT }, \ 444 { "ps_strings", CTLTYPE_INT }, \ 445 { "usrstack", CTLTYPE_INT }, \ 446 { "logsigexit", CTLTYPE_INT }, \ 447 { "iov_max", CTLTYPE_INT }, \ 448 { "hostuuid", CTLTYPE_STRING }, \ 449} 450 451/* 452 * CTL_VFS identifiers 453 */ 454#define CTL_VFS_NAMES { \ 455 { "vfsconf", CTLTYPE_STRUCT }, \ 456} 457 458/* 459 * KERN_PROC subtypes 460 */ 461#define KERN_PROC_ALL 0 /* everything */ 462#define KERN_PROC_PID 1 /* by process id */ 463#define KERN_PROC_PGRP 2 /* by process group id */ 464#define KERN_PROC_SESSION 3 /* by session of pid */ 465#define KERN_PROC_TTY 4 /* by controlling tty */ 466#define KERN_PROC_UID 5 /* by effective uid */ 467#define KERN_PROC_RUID 6 /* by real uid */ 468#define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 469#define KERN_PROC_PROC 8 /* only return procs */ 470#define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 471#define KERN_PROC_RGID 10 /* by real group id */ 472#define KERN_PROC_GID 11 /* by effective group id */ 473#define KERN_PROC_PATHNAME 12 /* path to executable */ 474#define KERN_PROC_VMMAP 13 /* VM map entries for process */ 475#define KERN_PROC_FILEDESC 14 /* File descriptors for process */ 476#define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 477#define KERN_PROC_INC_THREAD 0x10 /* 478 * modifier for pid, pgrp, tty, 479 * uid, ruid, gid, rgid and proc 480 */ 481 482/* 483 * KERN_IPC identifiers 484 */ 485#define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 486#define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 487#define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 488#define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 489#define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 490#define KIPC_MAX_HDR 6 /* int: max total length of headers */ 491#define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 492 493/* 494 * CTL_HW identifiers 495 */ 496#define HW_MACHINE 1 /* string: machine class */ 497#define HW_MODEL 2 /* string: specific machine model */ 498#define HW_NCPU 3 /* int: number of cpus */ 499#define HW_BYTEORDER 4 /* int: machine byte order */ 500#define HW_PHYSMEM 5 /* int: total memory */ 501#define HW_USERMEM 6 /* int: non-kernel memory */ 502#define HW_PAGESIZE 7 /* int: software page size */ 503#define HW_DISKNAMES 8 /* strings: disk drive names */ 504#define HW_DISKSTATS 9 /* struct: diskstats[] */ 505#define HW_FLOATINGPT 10 /* int: has HW floating point? */ 506#define HW_MACHINE_ARCH 11 /* string: machine architecture */ 507#define HW_REALMEM 12 /* int: 'real' memory */ 508#define HW_MAXID 13 /* number of valid hw ids */ 509 510#define CTL_HW_NAMES { \ 511 { 0, 0 }, \ 512 { "machine", CTLTYPE_STRING }, \ 513 { "model", CTLTYPE_STRING }, \ 514 { "ncpu", CTLTYPE_INT }, \ 515 { "byteorder", CTLTYPE_INT }, \ 516 { "physmem", CTLTYPE_ULONG }, \ 517 { "usermem", CTLTYPE_ULONG }, \ 518 { "pagesize", CTLTYPE_INT }, \ 519 { "disknames", CTLTYPE_STRUCT }, \ 520 { "diskstats", CTLTYPE_STRUCT }, \ 521 { "floatingpoint", CTLTYPE_INT }, \ 522 { "machine_arch", CTLTYPE_STRING }, \ 523 { "realmem", CTLTYPE_ULONG }, \ 524} 525 526/* 527 * CTL_USER definitions 528 */ 529#define USER_CS_PATH 1 /* string: _CS_PATH */ 530#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 531#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 532#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 533#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 534#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 535#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 536#define USER_LINE_MAX 8 /* int: LINE_MAX */ 537#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 538#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 539#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 540#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 541#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 542#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 543#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 544#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 545#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 546#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 547#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 548#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 549#define USER_MAXID 21 /* number of valid user ids */ 550 551#define CTL_USER_NAMES { \ 552 { 0, 0 }, \ 553 { "cs_path", CTLTYPE_STRING }, \ 554 { "bc_base_max", CTLTYPE_INT }, \ 555 { "bc_dim_max", CTLTYPE_INT }, \ 556 { "bc_scale_max", CTLTYPE_INT }, \ 557 { "bc_string_max", CTLTYPE_INT }, \ 558 { "coll_weights_max", CTLTYPE_INT }, \ 559 { "expr_nest_max", CTLTYPE_INT }, \ 560 { "line_max", CTLTYPE_INT }, \ 561 { "re_dup_max", CTLTYPE_INT }, \ 562 { "posix2_version", CTLTYPE_INT }, \ 563 { "posix2_c_bind", CTLTYPE_INT }, \ 564 { "posix2_c_dev", CTLTYPE_INT }, \ 565 { "posix2_char_term", CTLTYPE_INT }, \ 566 { "posix2_fort_dev", CTLTYPE_INT }, \ 567 { "posix2_fort_run", CTLTYPE_INT }, \ 568 { "posix2_localedef", CTLTYPE_INT }, \ 569 { "posix2_sw_dev", CTLTYPE_INT }, \ 570 { "posix2_upe", CTLTYPE_INT }, \ 571 { "stream_max", CTLTYPE_INT }, \ 572 { "tzname_max", CTLTYPE_INT }, \ 573} 574 575#define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 576#define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 577#define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 578#define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 579#define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 580#define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 581#define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 582#define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 583#define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 584#define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 585#define CTL_P1003_1B_FSYNC 11 /* boolean */ 586#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 587#define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 588#define CTL_P1003_1B_TIMERS 14 /* boolean */ 589#define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 590#define CTL_P1003_1B_AIO_MAX 16 /* int */ 591#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 592#define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 593#define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 594#define CTL_P1003_1B_PAGESIZE 20 /* int */ 595#define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 596#define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 597#define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 598#define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 599#define CTL_P1003_1B_TIMER_MAX 25 /* int */ 600 601#define CTL_P1003_1B_MAXID 26 602 603#define CTL_P1003_1B_NAMES { \ 604 { 0, 0 }, \ 605 { "asynchronous_io", CTLTYPE_INT }, \ 606 { "mapped_files", CTLTYPE_INT }, \ 607 { "memlock", CTLTYPE_INT }, \ 608 { "memlock_range", CTLTYPE_INT }, \ 609 { "memory_protection", CTLTYPE_INT }, \ 610 { "message_passing", CTLTYPE_INT }, \ 611 { "prioritized_io", CTLTYPE_INT }, \ 612 { "priority_scheduling", CTLTYPE_INT }, \ 613 { "realtime_signals", CTLTYPE_INT }, \ 614 { "semaphores", CTLTYPE_INT }, \ 615 { "fsync", CTLTYPE_INT }, \ 616 { "shared_memory_objects", CTLTYPE_INT }, \ 617 { "synchronized_io", CTLTYPE_INT }, \ 618 { "timers", CTLTYPE_INT }, \ 619 { "aio_listio_max", CTLTYPE_INT }, \ 620 { "aio_max", CTLTYPE_INT }, \ 621 { "aio_prio_delta_max", CTLTYPE_INT }, \ 622 { "delaytimer_max", CTLTYPE_INT }, \ 623 { "mq_open_max", CTLTYPE_INT }, \ 624 { "pagesize", CTLTYPE_INT }, \ 625 { "rtsig_max", CTLTYPE_INT }, \ 626 { "nsems_max", CTLTYPE_INT }, \ 627 { "sem_value_max", CTLTYPE_INT }, \ 628 { "sigqueue_max", CTLTYPE_INT }, \ 629 { "timer_max", CTLTYPE_INT }, \ 630} 631 632#ifdef _KERNEL 633 634/* 635 * Declare some common oids. 636 */ 637extern struct sysctl_oid_list sysctl__children; 638SYSCTL_DECL(_kern); 639SYSCTL_DECL(_kern_features); 640SYSCTL_DECL(_kern_ipc); 641SYSCTL_DECL(_kern_proc); 642SYSCTL_DECL(_kern_sched); 643SYSCTL_DECL(_kern_sched_stats); 644SYSCTL_DECL(_sysctl); 645SYSCTL_DECL(_vm); 646SYSCTL_DECL(_vm_stats); 647SYSCTL_DECL(_vm_stats_misc); 648SYSCTL_DECL(_vfs); 649SYSCTL_DECL(_net); 650SYSCTL_DECL(_debug); 651SYSCTL_DECL(_debug_sizeof); 652SYSCTL_DECL(_hw); 653SYSCTL_DECL(_hw_bus); 654SYSCTL_DECL(_machdep); 655SYSCTL_DECL(_user); 656SYSCTL_DECL(_compat); 657SYSCTL_DECL(_regression); 658SYSCTL_DECL(_security); 659SYSCTL_DECL(_security_bsd); 660 661extern char machine[]; 662extern char osrelease[]; 663extern char ostype[]; 664extern char kern_ident[]; 665 666/* Dynamic oid handling */ 667struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 668 struct sysctl_oid_list *parent, int nbr, const char *name, 669 int kind, void *arg1, int arg2, 670 int (*handler) (SYSCTL_HANDLER_ARGS), 671 const char *fmt, const char *descr); 672void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 673int sysctl_move_oid(struct sysctl_oid *oidp, 674 struct sysctl_oid_list *parent); 675int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 676int sysctl_ctx_init(struct sysctl_ctx_list *clist); 677int sysctl_ctx_free(struct sysctl_ctx_list *clist); 678struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 679 struct sysctl_oid *oidp); 680struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 681 struct sysctl_oid *oidp); 682int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 683 struct sysctl_oid *oidp); 684 685int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 686 size_t *oldlenp, void *new, size_t newlen, 687 size_t *retval, int flags); 688int kernel_sysctlbyname(struct thread *td, char *name, 689 void *old, size_t *oldlenp, void *new, size_t newlen, 690 size_t *retval, int flags); 691int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 692 size_t *oldlenp, int inkernel, void *new, size_t newlen, 693 size_t *retval, int flags); 694int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 695 int *nindx, struct sysctl_req *req); 696int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 697 698#else /* !_KERNEL */ 699#include <sys/cdefs.h> 700 701__BEGIN_DECLS 702int sysctl(int *, u_int, void *, size_t *, void *, size_t); 703int sysctlbyname(const char *, void *, size_t *, void *, size_t); 704int sysctlnametomib(const char *, int *, size_t *); 705__END_DECLS 706#endif /* _KERNEL */ 707 708#endif /* !_SYS_SYSCTL_H_ */ 709