sysctl.h revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Mike Karels at Berkeley Software Design, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 35 * $FreeBSD: stable/11/sys/sys/sysctl.h 330897 2018-03-14 03:19:51Z eadler $ 36 */ 37 38#ifndef _SYS_SYSCTL_H_ 39#define _SYS_SYSCTL_H_ 40 41#include <sys/queue.h> 42 43struct thread; 44/* 45 * Definitions for sysctl call. The sysctl call uses a hierarchical name 46 * for objects that can be examined or modified. The name is expressed as 47 * a sequence of integers. Like a file path name, the meaning of each 48 * component depends on its place in the hierarchy. The top-level and kern 49 * identifiers are defined here, and other identifiers are defined in the 50 * respective subsystem header files. 51 */ 52 53#define CTL_MAXNAME 24 /* largest number of components supported */ 54 55/* 56 * Each subsystem defined by sysctl defines a list of variables 57 * for that subsystem. Each name is either a node with further 58 * levels defined below it, or it is a leaf of some particular 59 * type given below. Each sysctl level defines a set of name/type 60 * pairs to be used by sysctl(8) in manipulating the subsystem. 61 */ 62struct ctlname { 63 char *ctl_name; /* subsystem name */ 64 int ctl_type; /* type of name */ 65}; 66 67#define CTLTYPE 0xf /* mask for the type */ 68#define CTLTYPE_NODE 1 /* name is a node */ 69#define CTLTYPE_INT 2 /* name describes an integer */ 70#define CTLTYPE_STRING 3 /* name describes a string */ 71#define CTLTYPE_S64 4 /* name describes a signed 64-bit number */ 72#define CTLTYPE_OPAQUE 5 /* name describes a structure */ 73#define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 74#define CTLTYPE_UINT 6 /* name describes an unsigned integer */ 75#define CTLTYPE_LONG 7 /* name describes a long */ 76#define CTLTYPE_ULONG 8 /* name describes an unsigned long */ 77#define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */ 78#define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */ 79#define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */ 80#define CTLTYPE_S8 0xc /* name describes a signed 8-bit number */ 81#define CTLTYPE_S16 0xd /* name describes a signed 16-bit number */ 82#define CTLTYPE_S32 0xe /* name describes a signed 32-bit number */ 83#define CTLTYPE_U32 0xf /* name describes an unsigned 32-bit number */ 84 85#define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 86#define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 87#define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 88#define CTLFLAG_DORMANT 0x20000000 /* This sysctl is not active yet */ 89#define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 90#define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 91#define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 92#define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 93#define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 94#define CTLMASK_SECURE 0x00F00000 /* Secure level */ 95#define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */ 96#define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 97#define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN) 98#define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */ 99#define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 100#define CTLFLAG_DYING 0x00010000 /* Oid is being removed */ 101#define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */ 102#define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */ 103#define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */ 104#define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */ 105#define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR) 106 107/* 108 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 109 * 110 * Secure when the securelevel is raised to at least N. 111 */ 112#define CTLSHIFT_SECURE 20 113#define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 114#define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 115#define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 116 117/* 118 * USE THIS instead of a hardwired number from the categories below 119 * to get dynamically assigned sysctl entries using the linker-set 120 * technology. This is the way nearly all new sysctl variables should 121 * be implemented. 122 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 123 */ 124#define OID_AUTO (-1) 125 126/* 127 * The starting number for dynamically-assigned entries. WARNING! 128 * ALL static sysctl entries should have numbers LESS than this! 129 */ 130#define CTL_AUTO_START 0x100 131 132#ifdef _KERNEL 133#include <sys/linker_set.h> 134 135#ifdef KLD_MODULE 136/* XXX allow overspecification of type in external kernel modules */ 137#define SYSCTL_CT_ASSERT_MASK CTLTYPE 138#else 139#define SYSCTL_CT_ASSERT_MASK 0 140#endif 141 142#define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 143 intmax_t arg2, struct sysctl_req *req 144 145/* definitions for sysctl_req 'lock' member */ 146#define REQ_UNWIRED 1 147#define REQ_WIRED 2 148 149/* definitions for sysctl_req 'flags' member */ 150#if defined(__amd64__) || defined(__powerpc64__) ||\ 151 (defined(__mips__) && defined(__mips_n64)) 152#define SCTL_MASK32 1 /* 32 bit emulation */ 153#endif 154 155/* 156 * This describes the access space for a sysctl request. This is needed 157 * so that we can use the interface from the kernel or from user-space. 158 */ 159struct sysctl_req { 160 struct thread *td; /* used for access checking */ 161 int lock; /* wiring state */ 162 void *oldptr; 163 size_t oldlen; 164 size_t oldidx; 165 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 166 void *newptr; 167 size_t newlen; 168 size_t newidx; 169 int (*newfunc)(struct sysctl_req *, void *, size_t); 170 size_t validlen; 171 int flags; 172}; 173 174SLIST_HEAD(sysctl_oid_list, sysctl_oid); 175 176/* 177 * This describes one "oid" in the MIB tree. Potentially more nodes can 178 * be hidden behind it, expanded by the handler. 179 */ 180struct sysctl_oid { 181 struct sysctl_oid_list oid_children; 182 struct sysctl_oid_list *oid_parent; 183 SLIST_ENTRY(sysctl_oid) oid_link; 184 int oid_number; 185 u_int oid_kind; 186 void *oid_arg1; 187 intmax_t oid_arg2; 188 const char *oid_name; 189 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 190 const char *oid_fmt; 191 int oid_refcnt; 192 u_int oid_running; 193 const char *oid_descr; 194}; 195 196#define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 197#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 198#define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1) 199 200int sysctl_handle_bool(SYSCTL_HANDLER_ARGS); 201int sysctl_handle_8(SYSCTL_HANDLER_ARGS); 202int sysctl_handle_16(SYSCTL_HANDLER_ARGS); 203int sysctl_handle_32(SYSCTL_HANDLER_ARGS); 204int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 205int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 206int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 207int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 208int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 209int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 210int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS); 211int sysctl_handle_counter_u64_array(SYSCTL_HANDLER_ARGS); 212 213int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS); 214int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS); 215 216int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 217int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 218int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 219 220/* 221 * These functions are used to add/remove an oid from the mib. 222 */ 223void sysctl_register_oid(struct sysctl_oid *oidp); 224void sysctl_register_disabled_oid(struct sysctl_oid *oidp); 225void sysctl_enable_oid(struct sysctl_oid *oidp); 226void sysctl_unregister_oid(struct sysctl_oid *oidp); 227 228/* Declare a static oid to allow child oids to be added to it. */ 229#define SYSCTL_DECL(name) \ 230 extern struct sysctl_oid sysctl__##name 231 232/* Hide these in macros. */ 233#define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children) 234#define SYSCTL_PARENT(oid_ptr) \ 235 (((oid_ptr)->oid_parent != &sysctl__children) ? \ 236 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \ 237 oid_children) : (struct sysctl_oid *)NULL) 238#define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children) 239 240/* === Structs and macros related to context handling. === */ 241 242/* All dynamically created sysctls can be tracked in a context list. */ 243struct sysctl_ctx_entry { 244 struct sysctl_oid *entry; 245 TAILQ_ENTRY(sysctl_ctx_entry) link; 246}; 247 248TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 249 250#define SYSCTL_NODE_CHILDREN(parent, name) \ 251 sysctl__##parent##_##name.oid_children 252 253#ifndef NO_SYSCTL_DESCR 254#define __DESCR(d) d 255#else 256#define __DESCR(d) "" 257#endif 258 259/* This macro is only for internal use */ 260#define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr) \ 261 struct sysctl_oid id = { \ 262 .oid_parent = (parent_child_head), \ 263 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \ 264 .oid_number = (nbr), \ 265 .oid_kind = (kind), \ 266 .oid_arg1 = (a1), \ 267 .oid_arg2 = (a2), \ 268 .oid_name = (name), \ 269 .oid_handler = (handler), \ 270 .oid_fmt = (fmt), \ 271 .oid_descr = __DESCR(descr) \ 272 }; \ 273 DATA_SET(sysctl_set, id) 274 275/* This constructs a static "raw" MIB oid. */ 276#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 277 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 278 SYSCTL_CHILDREN(&sysctl__##parent), \ 279 nbr, #name, kind, a1, a2, handler, fmt, descr) 280 281/* This constructs a global "raw" MIB oid. */ 282#define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 283 SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 284 SYSCTL_CHILDREN(&sysctl__##parent), \ 285 nbr, #name, kind, a1, a2, handler, fmt, descr) 286 287#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 288 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 289 290/* This constructs a root node from which other nodes can hang. */ 291#define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \ 292 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \ 293 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \ 294 handler, "N", descr); \ 295 CTASSERT(((access) & CTLTYPE) == 0 || \ 296 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 297 298/* This constructs a node from which other oids can hang. */ 299#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 300 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \ 301 NULL, 0, handler, "N", descr); \ 302 CTASSERT(((access) & CTLTYPE) == 0 || \ 303 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 304 305#define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 306({ \ 307 CTASSERT(((access) & CTLTYPE) == 0 || \ 308 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 309 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 310 NULL, 0, handler, "N", __DESCR(descr)); \ 311}) 312 313#define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \ 314({ \ 315 CTASSERT(((access) & CTLTYPE) == 0 || \ 316 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 317 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \ 318 CTLTYPE_NODE|(access), \ 319 NULL, 0, handler, "N", __DESCR(descr)); \ 320}) 321 322/* Oid for a string. len can be 0 to indicate '\0' termination. */ 323#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 324 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 325 arg, len, sysctl_handle_string, "A", descr); \ 326 CTASSERT(((access) & CTLTYPE) == 0 || \ 327 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING) 328 329#define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 330({ \ 331 char *__arg = (arg); \ 332 CTASSERT(((access) & CTLTYPE) == 0 || \ 333 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \ 334 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 335 __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \ 336}) 337 338/* Oid for a bool. If ptr is NULL, val is returned. */ 339#define SYSCTL_NULL_BOOL_PTR ((bool *)NULL) 340#define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \ 341 SYSCTL_OID(parent, nbr, name, \ 342 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 343 ptr, val, sysctl_handle_bool, "CU", descr); \ 344 CTASSERT(((access) & CTLTYPE) == 0 && \ 345 sizeof(bool) == sizeof(*(ptr))) 346 347#define SYSCTL_ADD_BOOL(ctx, parent, nbr, name, access, ptr, val, descr) \ 348({ \ 349 bool *__ptr = (ptr); \ 350 CTASSERT(((access) & CTLTYPE) == 0); \ 351 sysctl_add_oid(ctx, parent, nbr, name, \ 352 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 353 __ptr, val, sysctl_handle_bool, "CU", __DESCR(descr)); \ 354}) 355 356/* Oid for a signed 8-bit int. If ptr is NULL, val is returned. */ 357#define SYSCTL_NULL_S8_PTR ((int8_t *)NULL) 358#define SYSCTL_S8(parent, nbr, name, access, ptr, val, descr) \ 359 SYSCTL_OID(parent, nbr, name, \ 360 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \ 361 ptr, val, sysctl_handle_8, "C", descr); \ 362 CTASSERT((((access) & CTLTYPE) == 0 || \ 363 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8) && \ 364 sizeof(int8_t) == sizeof(*(ptr))) 365 366#define SYSCTL_ADD_S8(ctx, parent, nbr, name, access, ptr, val, descr) \ 367({ \ 368 int8_t *__ptr = (ptr); \ 369 CTASSERT(((access) & CTLTYPE) == 0 || \ 370 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8); \ 371 sysctl_add_oid(ctx, parent, nbr, name, \ 372 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \ 373 __ptr, val, sysctl_handle_8, "C", __DESCR(descr)); \ 374}) 375 376/* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */ 377#define SYSCTL_NULL_U8_PTR ((uint8_t *)NULL) 378#define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \ 379 SYSCTL_OID(parent, nbr, name, \ 380 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 381 ptr, val, sysctl_handle_8, "CU", descr); \ 382 CTASSERT((((access) & CTLTYPE) == 0 || \ 383 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \ 384 sizeof(uint8_t) == sizeof(*(ptr))) 385 386#define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \ 387({ \ 388 uint8_t *__ptr = (ptr); \ 389 CTASSERT(((access) & CTLTYPE) == 0 || \ 390 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \ 391 sysctl_add_oid(ctx, parent, nbr, name, \ 392 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 393 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr)); \ 394}) 395 396/* Oid for a signed 16-bit int. If ptr is NULL, val is returned. */ 397#define SYSCTL_NULL_S16_PTR ((int16_t *)NULL) 398#define SYSCTL_S16(parent, nbr, name, access, ptr, val, descr) \ 399 SYSCTL_OID(parent, nbr, name, \ 400 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \ 401 ptr, val, sysctl_handle_16, "S", descr); \ 402 CTASSERT((((access) & CTLTYPE) == 0 || \ 403 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16) && \ 404 sizeof(int16_t) == sizeof(*(ptr))) 405 406#define SYSCTL_ADD_S16(ctx, parent, nbr, name, access, ptr, val, descr) \ 407({ \ 408 int16_t *__ptr = (ptr); \ 409 CTASSERT(((access) & CTLTYPE) == 0 || \ 410 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16); \ 411 sysctl_add_oid(ctx, parent, nbr, name, \ 412 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \ 413 __ptr, val, sysctl_handle_16, "S", __DESCR(descr)); \ 414}) 415 416/* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */ 417#define SYSCTL_NULL_U16_PTR ((uint16_t *)NULL) 418#define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \ 419 SYSCTL_OID(parent, nbr, name, \ 420 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 421 ptr, val, sysctl_handle_16, "SU", descr); \ 422 CTASSERT((((access) & CTLTYPE) == 0 || \ 423 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \ 424 sizeof(uint16_t) == sizeof(*(ptr))) 425 426#define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \ 427({ \ 428 uint16_t *__ptr = (ptr); \ 429 CTASSERT(((access) & CTLTYPE) == 0 || \ 430 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \ 431 sysctl_add_oid(ctx, parent, nbr, name, \ 432 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 433 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr)); \ 434}) 435 436/* Oid for a signed 32-bit int. If ptr is NULL, val is returned. */ 437#define SYSCTL_NULL_S32_PTR ((int32_t *)NULL) 438#define SYSCTL_S32(parent, nbr, name, access, ptr, val, descr) \ 439 SYSCTL_OID(parent, nbr, name, \ 440 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \ 441 ptr, val, sysctl_handle_32, "I", descr); \ 442 CTASSERT((((access) & CTLTYPE) == 0 || \ 443 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32) && \ 444 sizeof(int32_t) == sizeof(*(ptr))) 445 446#define SYSCTL_ADD_S32(ctx, parent, nbr, name, access, ptr, val, descr) \ 447({ \ 448 int32_t *__ptr = (ptr); \ 449 CTASSERT(((access) & CTLTYPE) == 0 || \ 450 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32); \ 451 sysctl_add_oid(ctx, parent, nbr, name, \ 452 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \ 453 __ptr, val, sysctl_handle_32, "I", __DESCR(descr)); \ 454}) 455 456/* Oid for an unsigned 32-bit int. If ptr is NULL, val is returned. */ 457#define SYSCTL_NULL_U32_PTR ((uint32_t *)NULL) 458#define SYSCTL_U32(parent, nbr, name, access, ptr, val, descr) \ 459 SYSCTL_OID(parent, nbr, name, \ 460 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \ 461 ptr, val, sysctl_handle_32, "IU", descr); \ 462 CTASSERT((((access) & CTLTYPE) == 0 || \ 463 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32) && \ 464 sizeof(uint32_t) == sizeof(*(ptr))) 465 466#define SYSCTL_ADD_U32(ctx, parent, nbr, name, access, ptr, val, descr) \ 467({ \ 468 uint32_t *__ptr = (ptr); \ 469 CTASSERT(((access) & CTLTYPE) == 0 || \ 470 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32); \ 471 sysctl_add_oid(ctx, parent, nbr, name, \ 472 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \ 473 __ptr, val, sysctl_handle_32, "IU", __DESCR(descr)); \ 474}) 475 476/* Oid for a signed 64-bit int. If ptr is NULL, val is returned. */ 477#define SYSCTL_NULL_S64_PTR ((int64_t *)NULL) 478#define SYSCTL_S64(parent, nbr, name, access, ptr, val, descr) \ 479 SYSCTL_OID(parent, nbr, name, \ 480 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 481 ptr, val, sysctl_handle_64, "Q", descr); \ 482 CTASSERT((((access) & CTLTYPE) == 0 || \ 483 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 484 sizeof(int64_t) == sizeof(*(ptr))) 485 486#define SYSCTL_ADD_S64(ctx, parent, nbr, name, access, ptr, val, descr) \ 487({ \ 488 int64_t *__ptr = (ptr); \ 489 CTASSERT(((access) & CTLTYPE) == 0 || \ 490 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 491 sysctl_add_oid(ctx, parent, nbr, name, \ 492 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 493 __ptr, val, sysctl_handle_64, "Q", __DESCR(descr)); \ 494}) 495 496/* Oid for an unsigned 64-bit int. If ptr is NULL, val is returned. */ 497#define SYSCTL_NULL_U64_PTR ((uint64_t *)NULL) 498#define SYSCTL_U64(parent, nbr, name, access, ptr, val, descr) \ 499 SYSCTL_OID(parent, nbr, name, \ 500 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 501 ptr, val, sysctl_handle_64, "QU", descr); \ 502 CTASSERT((((access) & CTLTYPE) == 0 || \ 503 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 504 sizeof(uint64_t) == sizeof(*(ptr))) 505 506#define SYSCTL_ADD_U64(ctx, parent, nbr, name, access, ptr, val, descr) \ 507({ \ 508 uint64_t *__ptr = (ptr); \ 509 CTASSERT(((access) & CTLTYPE) == 0 || \ 510 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 511 sysctl_add_oid(ctx, parent, nbr, name, \ 512 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 513 __ptr, val, sysctl_handle_64, "QU", __DESCR(descr)); \ 514}) 515 516/* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */ 517#define SYSCTL_NULL_INT_PTR ((int *)NULL) 518#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 519 SYSCTL_OID(parent, nbr, name, \ 520 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 521 ptr, val, sysctl_handle_int, "I", descr); \ 522 CTASSERT((((access) & CTLTYPE) == 0 || \ 523 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \ 524 sizeof(int) == sizeof(*(ptr))) 525 526#define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 527({ \ 528 int *__ptr = (ptr); \ 529 CTASSERT(((access) & CTLTYPE) == 0 || \ 530 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 531 sysctl_add_oid(ctx, parent, nbr, name, \ 532 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 533 __ptr, val, sysctl_handle_int, "I", __DESCR(descr)); \ 534}) 535 536/* Oid for an unsigned int. If ptr is NULL, val is returned. */ 537#define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL) 538#define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 539 SYSCTL_OID(parent, nbr, name, \ 540 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 541 ptr, val, sysctl_handle_int, "IU", descr); \ 542 CTASSERT((((access) & CTLTYPE) == 0 || \ 543 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \ 544 sizeof(unsigned) == sizeof(*(ptr))) 545 546#define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 547({ \ 548 unsigned *__ptr = (ptr); \ 549 CTASSERT(((access) & CTLTYPE) == 0 || \ 550 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \ 551 sysctl_add_oid(ctx, parent, nbr, name, \ 552 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 553 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr)); \ 554}) 555 556/* Oid for a long. The pointer must be non NULL. */ 557#define SYSCTL_NULL_LONG_PTR ((long *)NULL) 558#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 559 SYSCTL_OID(parent, nbr, name, \ 560 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 561 ptr, val, sysctl_handle_long, "L", descr); \ 562 CTASSERT((((access) & CTLTYPE) == 0 || \ 563 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \ 564 sizeof(long) == sizeof(*(ptr))) 565 566#define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 567({ \ 568 long *__ptr = (ptr); \ 569 CTASSERT(((access) & CTLTYPE) == 0 || \ 570 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \ 571 sysctl_add_oid(ctx, parent, nbr, name, \ 572 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 573 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr)); \ 574}) 575 576/* Oid for an unsigned long. The pointer must be non NULL. */ 577#define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL) 578#define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 579 SYSCTL_OID(parent, nbr, name, \ 580 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 581 ptr, val, sysctl_handle_long, "LU", descr); \ 582 CTASSERT((((access) & CTLTYPE) == 0 || \ 583 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \ 584 sizeof(unsigned long) == sizeof(*(ptr))) 585 586#define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 587({ \ 588 unsigned long *__ptr = (ptr); \ 589 CTASSERT(((access) & CTLTYPE) == 0 || \ 590 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \ 591 sysctl_add_oid(ctx, parent, nbr, name, \ 592 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 593 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)); \ 594}) 595 596/* Oid for a quad. The pointer must be non NULL. */ 597#define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL) 598#define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 599 SYSCTL_OID(parent, nbr, name, \ 600 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 601 ptr, val, sysctl_handle_64, "Q", descr); \ 602 CTASSERT((((access) & CTLTYPE) == 0 || \ 603 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 604 sizeof(int64_t) == sizeof(*(ptr))) 605 606#define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 607({ \ 608 int64_t *__ptr = (ptr); \ 609 CTASSERT(((access) & CTLTYPE) == 0 || \ 610 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 611 sysctl_add_oid(ctx, parent, nbr, name, \ 612 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 613 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr)); \ 614}) 615 616#define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL) 617#define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 618 SYSCTL_OID(parent, nbr, name, \ 619 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 620 ptr, val, sysctl_handle_64, "QU", descr); \ 621 CTASSERT((((access) & CTLTYPE) == 0 || \ 622 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 623 sizeof(uint64_t) == sizeof(*(ptr))) 624 625#define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \ 626({ \ 627 uint64_t *__ptr = (ptr); \ 628 CTASSERT(((access) & CTLTYPE) == 0 || \ 629 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 630 sysctl_add_oid(ctx, parent, nbr, name, \ 631 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 632 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr)); \ 633}) 634 635/* Oid for a CPU dependent variable */ 636#define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \ 637({ \ 638 struct sysctl_oid *__ret; \ 639 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \ 640 sizeof(unsigned) == sizeof(*(ptr))) && \ 641 ((access) & CTLTYPE) == 0); \ 642 if (sizeof(uint64_t) == sizeof(*(ptr))) { \ 643 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 644 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 645 (ptr), 0, sysctl_handle_64, "QU", \ 646 __DESCR(descr)); \ 647 } else { \ 648 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 649 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 650 (ptr), 0, sysctl_handle_int, "IU", \ 651 __DESCR(descr)); \ 652 } \ 653 __ret; \ 654}) 655 656/* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */ 657#define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \ 658 SYSCTL_OID(parent, nbr, name, \ 659 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 660 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \ 661 CTASSERT((((access) & CTLTYPE) == 0 || \ 662 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 663 sizeof(counter_u64_t) == sizeof(*(ptr)) && \ 664 sizeof(uint64_t) == sizeof(**(ptr))) 665 666#define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \ 667({ \ 668 counter_u64_t *__ptr = (ptr); \ 669 CTASSERT(((access) & CTLTYPE) == 0 || \ 670 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 671 sysctl_add_oid(ctx, parent, nbr, name, \ 672 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 673 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr)); \ 674}) 675 676/* Oid for an array of counter(9)s. The pointer and length must be non zero. */ 677#define SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \ 678 SYSCTL_OID(parent, nbr, name, \ 679 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \ 680 (ptr), (len), sysctl_handle_counter_u64_array, "S", descr); \ 681 CTASSERT((((access) & CTLTYPE) == 0 || \ 682 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) && \ 683 sizeof(counter_u64_t) == sizeof(*(ptr)) && \ 684 sizeof(uint64_t) == sizeof(**(ptr))) 685 686#define SYSCTL_ADD_COUNTER_U64_ARRAY(ctx, parent, nbr, name, access, \ 687 ptr, len, descr) \ 688({ \ 689 counter_u64_t *__ptr = (ptr); \ 690 CTASSERT(((access) & CTLTYPE) == 0 || \ 691 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 692 sysctl_add_oid(ctx, parent, nbr, name, \ 693 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \ 694 __ptr, len, sysctl_handle_counter_u64_array, "S", \ 695 __DESCR(descr)); \ 696}) 697 698/* Oid for an opaque object. Specified by a pointer and a length. */ 699#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 700 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 701 ptr, len, sysctl_handle_opaque, fmt, descr); \ 702 CTASSERT(((access) & CTLTYPE) == 0 || \ 703 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 704 705#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 706({ \ 707 CTASSERT(((access) & CTLTYPE) == 0 || \ 708 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 709 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 710 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)); \ 711}) 712 713/* Oid for a struct. Specified by a pointer and a type. */ 714#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 715 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 716 ptr, sizeof(struct type), sysctl_handle_opaque, \ 717 "S," #type, descr); \ 718 CTASSERT(((access) & CTLTYPE) == 0 || \ 719 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 720 721#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 722({ \ 723 CTASSERT(((access) & CTLTYPE) == 0 || \ 724 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 725 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 726 (ptr), sizeof(struct type), \ 727 sysctl_handle_opaque, "S," #type, __DESCR(descr)); \ 728}) 729 730/* Oid for a procedure. Specified by a pointer and an arg. */ 731#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 732 SYSCTL_OID(parent, nbr, name, (access), \ 733 ptr, arg, handler, fmt, descr); \ 734 CTASSERT(((access) & CTLTYPE) != 0) 735 736#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 737({ \ 738 CTASSERT(((access) & CTLTYPE) != 0); \ 739 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 740 (ptr), (arg), (handler), (fmt), __DESCR(descr)); \ 741}) 742 743/* Oid to handle limits on uma(9) zone specified by pointer. */ 744#define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \ 745 SYSCTL_OID(parent, nbr, name, \ 746 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 747 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \ 748 CTASSERT(((access) & CTLTYPE) == 0 || \ 749 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 750 751#define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \ 752({ \ 753 uma_zone_t __ptr = (ptr); \ 754 CTASSERT(((access) & CTLTYPE) == 0 || \ 755 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 756 sysctl_add_oid(ctx, parent, nbr, name, \ 757 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 758 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr)); \ 759}) 760 761/* Oid to obtain current use of uma(9) zone specified by pointer. */ 762#define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \ 763 SYSCTL_OID(parent, nbr, name, \ 764 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 765 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \ 766 CTASSERT(((access) & CTLTYPE) == 0 || \ 767 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 768 769#define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \ 770({ \ 771 uma_zone_t __ptr = (ptr); \ 772 CTASSERT(((access) & CTLTYPE) == 0 || \ 773 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 774 sysctl_add_oid(ctx, parent, nbr, name, \ 775 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 776 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr)); \ 777}) 778 779/* 780 * A macro to generate a read-only sysctl to indicate the presence of optional 781 * kernel features. 782 */ 783#define FEATURE(name, desc) \ 784 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 785 SYSCTL_NULL_INT_PTR, 1, desc) 786 787#endif /* _KERNEL */ 788 789/* 790 * Top-level identifiers 791 */ 792#define CTL_UNSPEC 0 /* unused */ 793#define CTL_KERN 1 /* "high kernel": proc, limits */ 794#define CTL_VM 2 /* virtual memory */ 795#define CTL_VFS 3 /* filesystem, mount type is next */ 796#define CTL_NET 4 /* network, see socket.h */ 797#define CTL_DEBUG 5 /* debugging parameters */ 798#define CTL_HW 6 /* generic cpu/io */ 799#define CTL_MACHDEP 7 /* machine dependent */ 800#define CTL_USER 8 /* user-level */ 801#define CTL_P1003_1B 9 /* POSIX 1003.1B */ 802 803/* 804 * CTL_KERN identifiers 805 */ 806#define KERN_OSTYPE 1 /* string: system version */ 807#define KERN_OSRELEASE 2 /* string: system release */ 808#define KERN_OSREV 3 /* int: system revision */ 809#define KERN_VERSION 4 /* string: compile time info */ 810#define KERN_MAXVNODES 5 /* int: max vnodes */ 811#define KERN_MAXPROC 6 /* int: max processes */ 812#define KERN_MAXFILES 7 /* int: max open files */ 813#define KERN_ARGMAX 8 /* int: max arguments to exec */ 814#define KERN_SECURELVL 9 /* int: system security level */ 815#define KERN_HOSTNAME 10 /* string: hostname */ 816#define KERN_HOSTID 11 /* int: host identifier */ 817#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 818#define KERN_VNODE 13 /* struct: vnode structures */ 819#define KERN_PROC 14 /* struct: process entries */ 820#define KERN_FILE 15 /* struct: file entries */ 821#define KERN_PROF 16 /* node: kernel profiling info */ 822#define KERN_POSIX1 17 /* int: POSIX.1 version */ 823#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 824#define KERN_JOB_CONTROL 19 /* int: is job control available */ 825#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 826#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 827#define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 828#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 829#define KERN_OSRELDATE 24 /* int: kernel release date */ 830#define KERN_NTP_PLL 25 /* node: NTP PLL control */ 831#define KERN_BOOTFILE 26 /* string: name of booted kernel */ 832#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 833#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 834#define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 835#define KERN_IPC 30 /* node: anything related to IPC */ 836#define KERN_DUMMY 31 /* unused */ 837#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 838#define KERN_USRSTACK 33 /* int: address of USRSTACK */ 839#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 840#define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 841#define KERN_HOSTUUID 36 /* string: host UUID identifier */ 842#define KERN_ARND 37 /* int: from arc4rand() */ 843/* 844 * KERN_PROC subtypes 845 */ 846#define KERN_PROC_ALL 0 /* everything */ 847#define KERN_PROC_PID 1 /* by process id */ 848#define KERN_PROC_PGRP 2 /* by process group id */ 849#define KERN_PROC_SESSION 3 /* by session of pid */ 850#define KERN_PROC_TTY 4 /* by controlling tty */ 851#define KERN_PROC_UID 5 /* by effective uid */ 852#define KERN_PROC_RUID 6 /* by real uid */ 853#define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 854#define KERN_PROC_PROC 8 /* only return procs */ 855#define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 856#define KERN_PROC_RGID 10 /* by real group id */ 857#define KERN_PROC_GID 11 /* by effective group id */ 858#define KERN_PROC_PATHNAME 12 /* path to executable */ 859#define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 860#define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 861#define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 862#define KERN_PROC_INC_THREAD 0x10 /* 863 * modifier for pid, pgrp, tty, 864 * uid, ruid, gid, rgid and proc 865 * This effectively uses 16-31 866 */ 867#define KERN_PROC_VMMAP 32 /* VM map entries for process */ 868#define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 869#define KERN_PROC_GROUPS 34 /* process groups */ 870#define KERN_PROC_ENV 35 /* get environment */ 871#define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */ 872#define KERN_PROC_RLIMIT 37 /* process resource limits */ 873#define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ 874#define KERN_PROC_UMASK 39 /* process umask */ 875#define KERN_PROC_OSREL 40 /* osreldate for process binary */ 876#define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */ 877#define KERN_PROC_CWD 42 /* process current working directory */ 878#define KERN_PROC_NFDS 43 /* number of open file descriptors */ 879 880/* 881 * KERN_IPC identifiers 882 */ 883#define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 884#define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 885#define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 886#define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 887#define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 888#define KIPC_MAX_HDR 6 /* int: max total length of headers */ 889#define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 890 891/* 892 * CTL_HW identifiers 893 */ 894#define HW_MACHINE 1 /* string: machine class */ 895#define HW_MODEL 2 /* string: specific machine model */ 896#define HW_NCPU 3 /* int: number of cpus */ 897#define HW_BYTEORDER 4 /* int: machine byte order */ 898#define HW_PHYSMEM 5 /* int: total memory */ 899#define HW_USERMEM 6 /* int: non-kernel memory */ 900#define HW_PAGESIZE 7 /* int: software page size */ 901#define HW_DISKNAMES 8 /* strings: disk drive names */ 902#define HW_DISKSTATS 9 /* struct: diskstats[] */ 903#define HW_FLOATINGPT 10 /* int: has HW floating point? */ 904#define HW_MACHINE_ARCH 11 /* string: machine architecture */ 905#define HW_REALMEM 12 /* int: 'real' memory */ 906 907/* 908 * CTL_USER definitions 909 */ 910#define USER_CS_PATH 1 /* string: _CS_PATH */ 911#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 912#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 913#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 914#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 915#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 916#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 917#define USER_LINE_MAX 8 /* int: LINE_MAX */ 918#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 919#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 920#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 921#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 922#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 923#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 924#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 925#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 926#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 927#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 928#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 929#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 930 931#define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 932#define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 933#define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 934#define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 935#define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 936#define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 937#define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 938#define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 939#define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 940#define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 941#define CTL_P1003_1B_FSYNC 11 /* boolean */ 942#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 943#define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 944#define CTL_P1003_1B_TIMERS 14 /* boolean */ 945#define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 946#define CTL_P1003_1B_AIO_MAX 16 /* int */ 947#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 948#define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 949#define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 950#define CTL_P1003_1B_PAGESIZE 20 /* int */ 951#define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 952#define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 953#define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 954#define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 955#define CTL_P1003_1B_TIMER_MAX 25 /* int */ 956 957#define CTL_P1003_1B_MAXID 26 958 959#ifdef _KERNEL 960 961/* 962 * Declare some common oids. 963 */ 964extern struct sysctl_oid_list sysctl__children; 965SYSCTL_DECL(_kern); 966SYSCTL_DECL(_kern_features); 967SYSCTL_DECL(_kern_ipc); 968SYSCTL_DECL(_kern_proc); 969SYSCTL_DECL(_kern_sched); 970SYSCTL_DECL(_kern_sched_stats); 971SYSCTL_DECL(_sysctl); 972SYSCTL_DECL(_vm); 973SYSCTL_DECL(_vm_stats); 974SYSCTL_DECL(_vm_stats_misc); 975SYSCTL_DECL(_vfs); 976SYSCTL_DECL(_net); 977SYSCTL_DECL(_debug); 978SYSCTL_DECL(_debug_sizeof); 979SYSCTL_DECL(_dev); 980SYSCTL_DECL(_hw); 981SYSCTL_DECL(_hw_bus); 982SYSCTL_DECL(_hw_bus_devices); 983SYSCTL_DECL(_hw_bus_info); 984SYSCTL_DECL(_machdep); 985SYSCTL_DECL(_user); 986SYSCTL_DECL(_compat); 987SYSCTL_DECL(_regression); 988SYSCTL_DECL(_security); 989SYSCTL_DECL(_security_bsd); 990 991extern char machine[]; 992extern char osrelease[]; 993extern char ostype[]; 994extern char kern_ident[]; 995 996/* Dynamic oid handling */ 997struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 998 struct sysctl_oid_list *parent, int nbr, const char *name, int kind, 999 void *arg1, intmax_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS), 1000 const char *fmt, const char *descr); 1001int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 1002 int recurse); 1003void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 1004int sysctl_move_oid(struct sysctl_oid *oidp, 1005 struct sysctl_oid_list *parent); 1006int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 1007int sysctl_ctx_init(struct sysctl_ctx_list *clist); 1008int sysctl_ctx_free(struct sysctl_ctx_list *clist); 1009struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 1010 struct sysctl_oid *oidp); 1011struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 1012 struct sysctl_oid *oidp); 1013int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 1014 struct sysctl_oid *oidp); 1015 1016int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 1017 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 1018 int flags); 1019int kernel_sysctlbyname(struct thread *td, char *name, void *old, 1020 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 1021 int flags); 1022int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 1023 size_t *oldlenp, int inkernel, void *new, size_t newlen, 1024 size_t *retval, int flags); 1025int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 1026 int *nindx, struct sysctl_req *req); 1027void sysctl_wlock(void); 1028void sysctl_wunlock(void); 1029int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 1030 1031struct sbuf; 1032struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 1033 struct sysctl_req *); 1034#else /* !_KERNEL */ 1035#include <sys/cdefs.h> 1036 1037__BEGIN_DECLS 1038int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 1039int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 1040int sysctlnametomib(const char *, int *, size_t *); 1041__END_DECLS 1042#endif /* _KERNEL */ 1043 1044#endif /* !_SYS_SYSCTL_H_ */ 1045