sysctl.h revision 215821
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 215821 2010-11-25 15:56:05Z attilio $ 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_MPSAFE 0x00040000 /* Handler is MP safe */ 88#define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 89#define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 90 91/* 92 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 93 * 94 * Secure when the securelevel is raised to at least N. 95 */ 96#define CTLSHIFT_SECURE 20 97#define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 98#define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 99#define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 100 101/* 102 * USE THIS instead of a hardwired number from the categories below 103 * to get dynamically assigned sysctl entries using the linker-set 104 * technology. This is the way nearly all new sysctl variables should 105 * be implemented. 106 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 107 */ 108#define OID_AUTO (-1) 109 110/* 111 * The starting number for dynamically-assigned entries. WARNING! 112 * ALL static sysctl entries should have numbers LESS than this! 113 */ 114#define CTL_AUTO_START 0x100 115 116#ifdef _KERNEL 117#define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \ 118 struct sysctl_req *req 119 120/* definitions for sysctl_req 'lock' member */ 121#define REQ_UNLOCKED 0 /* not locked and not wired */ 122#define REQ_LOCKED 1 /* locked and not wired */ 123#define REQ_WIRED 2 /* locked and wired */ 124 125/* definitions for sysctl_req 'flags' member */ 126#if defined(__amd64__) || defined(__ia64__) || defined(__powerpc64__) 127#define SCTL_MASK32 1 /* 32 bit emulation */ 128#endif 129 130/* 131 * This describes the access space for a sysctl request. This is needed 132 * so that we can use the interface from the kernel or from user-space. 133 */ 134struct sysctl_req { 135 struct thread *td; /* used for access checking */ 136 int lock; /* locking/wiring state */ 137 void *oldptr; 138 size_t oldlen; 139 size_t oldidx; 140 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 141 void *newptr; 142 size_t newlen; 143 size_t newidx; 144 int (*newfunc)(struct sysctl_req *, void *, size_t); 145 size_t validlen; 146 int flags; 147}; 148 149SLIST_HEAD(sysctl_oid_list, sysctl_oid); 150 151/* 152 * This describes one "oid" in the MIB tree. Potentially more nodes can 153 * be hidden behind it, expanded by the handler. 154 */ 155struct sysctl_oid { 156 struct sysctl_oid_list *oid_parent; 157 SLIST_ENTRY(sysctl_oid) oid_link; 158 int oid_number; 159 u_int oid_kind; 160 void *oid_arg1; 161 int oid_arg2; 162 const char *oid_name; 163 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 164 const char *oid_fmt; 165 int oid_refcnt; 166 const char *oid_descr; 167}; 168 169#define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 170#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 171 172int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 173int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 174int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 175int sysctl_handle_quad(SYSCTL_HANDLER_ARGS); 176int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS); 177int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 178int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 179 180int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 181int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 182int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 183 184/* 185 * These functions are used to add/remove an oid from the mib. 186 */ 187void sysctl_register_oid(struct sysctl_oid *oidp); 188void sysctl_unregister_oid(struct sysctl_oid *oidp); 189 190/* Declare a static oid to allow child oids to be added to it. */ 191#define SYSCTL_DECL(name) \ 192 extern struct sysctl_oid_list sysctl_##name##_children 193 194/* Hide these in macros */ 195#define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 196 (oid_ptr)->oid_arg1 197#define SYSCTL_CHILDREN_SET(oid_ptr, val) \ 198 (oid_ptr)->oid_arg1 = (val); 199#define SYSCTL_STATIC_CHILDREN(oid_name) \ 200 (&sysctl_##oid_name##_children) 201 202/* === Structs and macros related to context handling === */ 203 204/* All dynamically created sysctls can be tracked in a context list. */ 205struct sysctl_ctx_entry { 206 struct sysctl_oid *entry; 207 TAILQ_ENTRY(sysctl_ctx_entry) link; 208}; 209 210TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 211 212#define SYSCTL_NODE_CHILDREN(parent, name) \ 213 sysctl_##parent##_##name##_children 214 215#ifndef NO_SYSCTL_DESCR 216#define __DESCR(d) d 217#else 218#define __DESCR(d) "" 219#endif 220 221/* This constructs a "raw" MIB oid. */ 222#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 223 static struct sysctl_oid sysctl__##parent##_##name = { \ 224 &sysctl_##parent##_children, { NULL }, nbr, kind, \ 225 a1, a2, #name, handler, fmt, 0, __DESCR(descr) }; \ 226 DATA_SET(sysctl_set, sysctl__##parent##_##name) 227 228#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 229 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 230 231/* This constructs a node from which other oids can hang. */ 232#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 233 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 234 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 235 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "N", descr) 236 237#define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 238 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 239 NULL, 0, handler, "N", __DESCR(descr)) 240 241/* Oid for a string. len can be 0 to indicate '\0' termination. */ 242#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 243 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 244 arg, len, sysctl_handle_string, "A", descr) 245 246#define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 247 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 248 arg, len, sysctl_handle_string, "A", __DESCR(descr)) 249 250/* Oid for an int. If ptr is NULL, val is returned. */ 251#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 252 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|CTLFLAG_MPSAFE|(access), \ 253 ptr, val, sysctl_handle_int, "I", descr) 254 255#define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 256 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|CTLFLAG_MPSAFE|(access), \ 257 ptr, val, sysctl_handle_int, "I", __DESCR(descr)) 258 259/* Oid for an unsigned int. If ptr is NULL, val is returned. */ 260#define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 261 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \ 262 ptr, val, sysctl_handle_int, "IU", descr) 263 264#define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 265 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \ 266 ptr, val, sysctl_handle_int, "IU", __DESCR(descr)) 267 268#define SYSCTL_XINT(parent, nbr, name, access, ptr, val, descr) \ 269 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \ 270 ptr, val, sysctl_handle_int, "IX", descr) 271 272#define SYSCTL_ADD_XINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 273 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \ 274 ptr, val, sysctl_handle_int, "IX", __DESCR(descr)) 275 276/* Oid for a long. The pointer must be non NULL. */ 277#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 278 SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|CTLFLAG_MPSAFE|(access), \ 279 ptr, val, sysctl_handle_long, "L", descr) 280 281#define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 282 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|CTLFLAG_MPSAFE|(access), \ 283 ptr, 0, sysctl_handle_long, "L", __DESCR(descr)) 284 285/* Oid for an unsigned long. The pointer must be non NULL. */ 286#define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 287 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \ 288 ptr, val, sysctl_handle_long, "LU", __DESCR(descr)) 289 290#define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 291 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \ 292 ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)) 293 294#define SYSCTL_XLONG(parent, nbr, name, access, ptr, val, descr) \ 295 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \ 296 ptr, val, sysctl_handle_long, "LX", __DESCR(descr)) 297 298#define SYSCTL_ADD_XLONG(ctx, parent, nbr, name, access, ptr, descr) \ 299 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \ 300 ptr, 0, sysctl_handle_long, "LX", __DESCR(descr)) 301 302/* Oid for a quad. The pointer must be non NULL. */ 303#define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 304 SYSCTL_OID(parent, nbr, name, CTLTYPE_QUAD|CTLFLAG_MPSAFE|(access), \ 305 ptr, val, sysctl_handle_quad, "Q", __DESCR(descr)) 306 307#define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 308 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_QUAD|CTLFLAG_MPSAFE|(access), \ 309 ptr, 0, sysctl_handle_quad, "Q", __DESCR(descr)) 310 311/* Oid for an opaque object. Specified by a pointer and a length. */ 312#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 313 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 314 ptr, len, sysctl_handle_opaque, fmt, descr) 315 316#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\ 317 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 318 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)) 319 320/* Oid for a struct. Specified by a pointer and a type. */ 321#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 322 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 323 ptr, sizeof(struct type), sysctl_handle_opaque, \ 324 "S," #type, descr) 325 326#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 327 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 328 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr)) 329 330/* Oid for a procedure. Specified by a pointer and an arg. */ 331#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 332 SYSCTL_OID(parent, nbr, name, (access), \ 333 ptr, arg, handler, fmt, descr) 334 335#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 336 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 337 ptr, arg, handler, fmt, __DESCR(descr)) 338 339/* 340 * A macro to generate a read-only sysctl to indicate the presense of optional 341 * kernel features. 342 */ 343#define FEATURE(name, desc) \ 344 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD, 0, 1, desc) 345 346#endif /* _KERNEL */ 347 348/* 349 * Top-level identifiers 350 */ 351#define CTL_UNSPEC 0 /* unused */ 352#define CTL_KERN 1 /* "high kernel": proc, limits */ 353#define CTL_VM 2 /* virtual memory */ 354#define CTL_VFS 3 /* filesystem, mount type is next */ 355#define CTL_NET 4 /* network, see socket.h */ 356#define CTL_DEBUG 5 /* debugging parameters */ 357#define CTL_HW 6 /* generic cpu/io */ 358#define CTL_MACHDEP 7 /* machine dependent */ 359#define CTL_USER 8 /* user-level */ 360#define CTL_P1003_1B 9 /* POSIX 1003.1B */ 361#define CTL_MAXID 10 /* number of valid top-level ids */ 362 363#define CTL_NAMES { \ 364 { 0, 0 }, \ 365 { "kern", CTLTYPE_NODE }, \ 366 { "vm", CTLTYPE_NODE }, \ 367 { "vfs", CTLTYPE_NODE }, \ 368 { "net", CTLTYPE_NODE }, \ 369 { "debug", CTLTYPE_NODE }, \ 370 { "hw", CTLTYPE_NODE }, \ 371 { "machdep", CTLTYPE_NODE }, \ 372 { "user", CTLTYPE_NODE }, \ 373 { "p1003_1b", CTLTYPE_NODE }, \ 374} 375 376/* 377 * CTL_KERN identifiers 378 */ 379#define KERN_OSTYPE 1 /* string: system version */ 380#define KERN_OSRELEASE 2 /* string: system release */ 381#define KERN_OSREV 3 /* int: system revision */ 382#define KERN_VERSION 4 /* string: compile time info */ 383#define KERN_MAXVNODES 5 /* int: max vnodes */ 384#define KERN_MAXPROC 6 /* int: max processes */ 385#define KERN_MAXFILES 7 /* int: max open files */ 386#define KERN_ARGMAX 8 /* int: max arguments to exec */ 387#define KERN_SECURELVL 9 /* int: system security level */ 388#define KERN_HOSTNAME 10 /* string: hostname */ 389#define KERN_HOSTID 11 /* int: host identifier */ 390#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 391#define KERN_VNODE 13 /* struct: vnode structures */ 392#define KERN_PROC 14 /* struct: process entries */ 393#define KERN_FILE 15 /* struct: file entries */ 394#define KERN_PROF 16 /* node: kernel profiling info */ 395#define KERN_POSIX1 17 /* int: POSIX.1 version */ 396#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 397#define KERN_JOB_CONTROL 19 /* int: is job control available */ 398#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 399#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 400#define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 401#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 402#define KERN_OSRELDATE 24 /* int: kernel release date */ 403#define KERN_NTP_PLL 25 /* node: NTP PLL control */ 404#define KERN_BOOTFILE 26 /* string: name of booted kernel */ 405#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 406#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 407#define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 408#define KERN_IPC 30 /* node: anything related to IPC */ 409#define KERN_DUMMY 31 /* unused */ 410#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 411#define KERN_USRSTACK 33 /* int: address of USRSTACK */ 412#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 413#define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 414#define KERN_HOSTUUID 36 /* string: host UUID identifier */ 415#define KERN_ARND 37 /* int: from arc4rand() */ 416#define KERN_MAXID 38 /* number of valid kern ids */ 417 418#define CTL_KERN_NAMES { \ 419 { 0, 0 }, \ 420 { "ostype", CTLTYPE_STRING }, \ 421 { "osrelease", CTLTYPE_STRING }, \ 422 { "osrevision", CTLTYPE_INT }, \ 423 { "version", CTLTYPE_STRING }, \ 424 { "maxvnodes", CTLTYPE_INT }, \ 425 { "maxproc", CTLTYPE_INT }, \ 426 { "maxfiles", CTLTYPE_INT }, \ 427 { "argmax", CTLTYPE_INT }, \ 428 { "securelevel", CTLTYPE_INT }, \ 429 { "hostname", CTLTYPE_STRING }, \ 430 { "hostid", CTLTYPE_UINT }, \ 431 { "clockrate", CTLTYPE_STRUCT }, \ 432 { "vnode", CTLTYPE_STRUCT }, \ 433 { "proc", CTLTYPE_STRUCT }, \ 434 { "file", CTLTYPE_STRUCT }, \ 435 { "profiling", CTLTYPE_NODE }, \ 436 { "posix1version", CTLTYPE_INT }, \ 437 { "ngroups", CTLTYPE_INT }, \ 438 { "job_control", CTLTYPE_INT }, \ 439 { "saved_ids", CTLTYPE_INT }, \ 440 { "boottime", CTLTYPE_STRUCT }, \ 441 { "nisdomainname", CTLTYPE_STRING }, \ 442 { "update", CTLTYPE_INT }, \ 443 { "osreldate", CTLTYPE_INT }, \ 444 { "ntp_pll", CTLTYPE_NODE }, \ 445 { "bootfile", CTLTYPE_STRING }, \ 446 { "maxfilesperproc", CTLTYPE_INT }, \ 447 { "maxprocperuid", CTLTYPE_INT }, \ 448 { "ipc", CTLTYPE_NODE }, \ 449 { "dummy", CTLTYPE_INT }, \ 450 { "ps_strings", CTLTYPE_INT }, \ 451 { "usrstack", CTLTYPE_INT }, \ 452 { "logsigexit", CTLTYPE_INT }, \ 453 { "iov_max", CTLTYPE_INT }, \ 454 { "hostuuid", CTLTYPE_STRING }, \ 455 { "arc4rand", CTLTYPE_OPAQUE }, \ 456} 457 458/* 459 * CTL_VFS identifiers 460 */ 461#define CTL_VFS_NAMES { \ 462 { "vfsconf", CTLTYPE_STRUCT }, \ 463} 464 465/* 466 * KERN_PROC subtypes 467 */ 468#define KERN_PROC_ALL 0 /* everything */ 469#define KERN_PROC_PID 1 /* by process id */ 470#define KERN_PROC_PGRP 2 /* by process group id */ 471#define KERN_PROC_SESSION 3 /* by session of pid */ 472#define KERN_PROC_TTY 4 /* by controlling tty */ 473#define KERN_PROC_UID 5 /* by effective uid */ 474#define KERN_PROC_RUID 6 /* by real uid */ 475#define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 476#define KERN_PROC_PROC 8 /* only return procs */ 477#define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 478#define KERN_PROC_RGID 10 /* by real group id */ 479#define KERN_PROC_GID 11 /* by effective group id */ 480#define KERN_PROC_PATHNAME 12 /* path to executable */ 481#define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 482#define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 483#define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 484#define KERN_PROC_INC_THREAD 0x10 /* 485 * modifier for pid, pgrp, tty, 486 * uid, ruid, gid, rgid and proc 487 * This effectively uses 16-31 488 */ 489#define KERN_PROC_VMMAP 32 /* VM map entries for process */ 490#define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 491#define KERN_PROC_GROUPS 34 /* process groups */ 492 493/* 494 * KERN_IPC identifiers 495 */ 496#define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 497#define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 498#define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 499#define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 500#define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 501#define KIPC_MAX_HDR 6 /* int: max total length of headers */ 502#define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 503 504/* 505 * CTL_HW identifiers 506 */ 507#define HW_MACHINE 1 /* string: machine class */ 508#define HW_MODEL 2 /* string: specific machine model */ 509#define HW_NCPU 3 /* int: number of cpus */ 510#define HW_BYTEORDER 4 /* int: machine byte order */ 511#define HW_PHYSMEM 5 /* int: total memory */ 512#define HW_USERMEM 6 /* int: non-kernel memory */ 513#define HW_PAGESIZE 7 /* int: software page size */ 514#define HW_DISKNAMES 8 /* strings: disk drive names */ 515#define HW_DISKSTATS 9 /* struct: diskstats[] */ 516#define HW_FLOATINGPT 10 /* int: has HW floating point? */ 517#define HW_MACHINE_ARCH 11 /* string: machine architecture */ 518#define HW_REALMEM 12 /* int: 'real' memory */ 519#define HW_MAXID 13 /* number of valid hw ids */ 520 521#define CTL_HW_NAMES { \ 522 { 0, 0 }, \ 523 { "machine", CTLTYPE_STRING }, \ 524 { "model", CTLTYPE_STRING }, \ 525 { "ncpu", CTLTYPE_INT }, \ 526 { "byteorder", CTLTYPE_INT }, \ 527 { "physmem", CTLTYPE_ULONG }, \ 528 { "usermem", CTLTYPE_ULONG }, \ 529 { "pagesize", CTLTYPE_INT }, \ 530 { "disknames", CTLTYPE_STRUCT }, \ 531 { "diskstats", CTLTYPE_STRUCT }, \ 532 { "floatingpoint", CTLTYPE_INT }, \ 533 { "machine_arch", CTLTYPE_STRING }, \ 534 { "realmem", CTLTYPE_ULONG }, \ 535} 536 537/* 538 * CTL_USER definitions 539 */ 540#define USER_CS_PATH 1 /* string: _CS_PATH */ 541#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 542#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 543#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 544#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 545#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 546#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 547#define USER_LINE_MAX 8 /* int: LINE_MAX */ 548#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 549#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 550#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 551#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 552#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 553#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 554#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 555#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 556#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 557#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 558#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 559#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 560#define USER_MAXID 21 /* number of valid user ids */ 561 562#define CTL_USER_NAMES { \ 563 { 0, 0 }, \ 564 { "cs_path", CTLTYPE_STRING }, \ 565 { "bc_base_max", CTLTYPE_INT }, \ 566 { "bc_dim_max", CTLTYPE_INT }, \ 567 { "bc_scale_max", CTLTYPE_INT }, \ 568 { "bc_string_max", CTLTYPE_INT }, \ 569 { "coll_weights_max", CTLTYPE_INT }, \ 570 { "expr_nest_max", CTLTYPE_INT }, \ 571 { "line_max", CTLTYPE_INT }, \ 572 { "re_dup_max", CTLTYPE_INT }, \ 573 { "posix2_version", CTLTYPE_INT }, \ 574 { "posix2_c_bind", CTLTYPE_INT }, \ 575 { "posix2_c_dev", CTLTYPE_INT }, \ 576 { "posix2_char_term", CTLTYPE_INT }, \ 577 { "posix2_fort_dev", CTLTYPE_INT }, \ 578 { "posix2_fort_run", CTLTYPE_INT }, \ 579 { "posix2_localedef", CTLTYPE_INT }, \ 580 { "posix2_sw_dev", CTLTYPE_INT }, \ 581 { "posix2_upe", CTLTYPE_INT }, \ 582 { "stream_max", CTLTYPE_INT }, \ 583 { "tzname_max", CTLTYPE_INT }, \ 584} 585 586#define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 587#define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 588#define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 589#define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 590#define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 591#define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 592#define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 593#define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 594#define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 595#define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 596#define CTL_P1003_1B_FSYNC 11 /* boolean */ 597#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 598#define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 599#define CTL_P1003_1B_TIMERS 14 /* boolean */ 600#define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 601#define CTL_P1003_1B_AIO_MAX 16 /* int */ 602#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 603#define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 604#define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 605#define CTL_P1003_1B_PAGESIZE 20 /* int */ 606#define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 607#define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 608#define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 609#define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 610#define CTL_P1003_1B_TIMER_MAX 25 /* int */ 611 612#define CTL_P1003_1B_MAXID 26 613 614#define CTL_P1003_1B_NAMES { \ 615 { 0, 0 }, \ 616 { "asynchronous_io", CTLTYPE_INT }, \ 617 { "mapped_files", CTLTYPE_INT }, \ 618 { "memlock", CTLTYPE_INT }, \ 619 { "memlock_range", CTLTYPE_INT }, \ 620 { "memory_protection", CTLTYPE_INT }, \ 621 { "message_passing", CTLTYPE_INT }, \ 622 { "prioritized_io", CTLTYPE_INT }, \ 623 { "priority_scheduling", CTLTYPE_INT }, \ 624 { "realtime_signals", CTLTYPE_INT }, \ 625 { "semaphores", CTLTYPE_INT }, \ 626 { "fsync", CTLTYPE_INT }, \ 627 { "shared_memory_objects", CTLTYPE_INT }, \ 628 { "synchronized_io", CTLTYPE_INT }, \ 629 { "timers", CTLTYPE_INT }, \ 630 { "aio_listio_max", CTLTYPE_INT }, \ 631 { "aio_max", CTLTYPE_INT }, \ 632 { "aio_prio_delta_max", CTLTYPE_INT }, \ 633 { "delaytimer_max", CTLTYPE_INT }, \ 634 { "mq_open_max", CTLTYPE_INT }, \ 635 { "pagesize", CTLTYPE_INT }, \ 636 { "rtsig_max", CTLTYPE_INT }, \ 637 { "nsems_max", CTLTYPE_INT }, \ 638 { "sem_value_max", CTLTYPE_INT }, \ 639 { "sigqueue_max", CTLTYPE_INT }, \ 640 { "timer_max", CTLTYPE_INT }, \ 641} 642 643#ifdef _KERNEL 644 645/* 646 * Declare some common oids. 647 */ 648extern struct sysctl_oid_list sysctl__children; 649SYSCTL_DECL(_kern); 650SYSCTL_DECL(_kern_features); 651SYSCTL_DECL(_kern_ipc); 652SYSCTL_DECL(_kern_proc); 653SYSCTL_DECL(_kern_sched); 654SYSCTL_DECL(_kern_sched_stats); 655SYSCTL_DECL(_sysctl); 656SYSCTL_DECL(_vm); 657SYSCTL_DECL(_vm_stats); 658SYSCTL_DECL(_vm_stats_misc); 659SYSCTL_DECL(_vfs); 660SYSCTL_DECL(_net); 661SYSCTL_DECL(_debug); 662SYSCTL_DECL(_debug_sizeof); 663SYSCTL_DECL(_dev); 664SYSCTL_DECL(_hw); 665SYSCTL_DECL(_hw_bus); 666SYSCTL_DECL(_hw_bus_devices); 667SYSCTL_DECL(_hw_bus_info); 668SYSCTL_DECL(_machdep); 669SYSCTL_DECL(_user); 670SYSCTL_DECL(_compat); 671SYSCTL_DECL(_regression); 672SYSCTL_DECL(_security); 673SYSCTL_DECL(_security_bsd); 674 675extern char machine[]; 676extern char osrelease[]; 677extern char ostype[]; 678extern char kern_ident[]; 679 680/* Dynamic oid handling */ 681struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 682 struct sysctl_oid_list *parent, int nbr, const char *name, 683 int kind, void *arg1, int arg2, 684 int (*handler) (SYSCTL_HANDLER_ARGS), 685 const char *fmt, const char *descr); 686void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 687int sysctl_move_oid(struct sysctl_oid *oidp, 688 struct sysctl_oid_list *parent); 689int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 690int sysctl_ctx_init(struct sysctl_ctx_list *clist); 691int sysctl_ctx_free(struct sysctl_ctx_list *clist); 692struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 693 struct sysctl_oid *oidp); 694struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 695 struct sysctl_oid *oidp); 696int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 697 struct sysctl_oid *oidp); 698 699int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 700 size_t *oldlenp, void *new, size_t newlen, 701 size_t *retval, int flags); 702int kernel_sysctlbyname(struct thread *td, char *name, 703 void *old, size_t *oldlenp, void *new, size_t newlen, 704 size_t *retval, int flags); 705int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 706 size_t *oldlenp, int inkernel, void *new, size_t newlen, 707 size_t *retval, int flags); 708int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 709 int *nindx, struct sysctl_req *req); 710void sysctl_lock(void); 711void sysctl_unlock(void); 712int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 713 714struct sbuf; 715struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 716 struct sysctl_req *); 717#else /* !_KERNEL */ 718#include <sys/cdefs.h> 719 720__BEGIN_DECLS 721int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 722int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 723int sysctlnametomib(const char *, int *, size_t *); 724__END_DECLS 725#endif /* _KERNEL */ 726 727#endif /* !_SYS_SYSCTL_H_ */ 728