sysctl.h revision 290473
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 290473 2015-11-07 00:18:14Z mjg $ 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_S64 4 /* name describes a signed 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#define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */ 76#define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */ 77#define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */ 78 79#define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 80#define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 81#define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 82#define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 83#define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 84#define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 85#define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 86#define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 87#define CTLMASK_SECURE 0x00F00000 /* Secure level */ 88#define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */ 89#define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 90#define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN) 91#define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */ 92#define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 93#define CTLFLAG_DYING 0x00010000 /* Oid is being removed */ 94#define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */ 95#define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */ 96#define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */ 97#define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */ 98#define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR) 99 100/* 101 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 102 * 103 * Secure when the securelevel is raised to at least N. 104 */ 105#define CTLSHIFT_SECURE 20 106#define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 107#define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 108#define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 109 110/* 111 * USE THIS instead of a hardwired number from the categories below 112 * to get dynamically assigned sysctl entries using the linker-set 113 * technology. This is the way nearly all new sysctl variables should 114 * be implemented. 115 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 116 */ 117#define OID_AUTO (-1) 118 119/* 120 * The starting number for dynamically-assigned entries. WARNING! 121 * ALL static sysctl entries should have numbers LESS than this! 122 */ 123#define CTL_AUTO_START 0x100 124 125#ifdef _KERNEL 126#include <sys/linker_set.h> 127 128#ifdef KLD_MODULE 129/* XXX allow overspecification of type in external kernel modules */ 130#define SYSCTL_CT_ASSERT_MASK CTLTYPE 131#else 132#define SYSCTL_CT_ASSERT_MASK 0 133#endif 134 135#define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 136 intptr_t arg2, struct sysctl_req *req 137 138/* definitions for sysctl_req 'lock' member */ 139#define REQ_UNWIRED 1 140#define REQ_WIRED 2 141 142/* definitions for sysctl_req 'flags' member */ 143#if defined(__amd64__) || defined(__powerpc64__) ||\ 144 (defined(__mips__) && defined(__mips_n64)) 145#define SCTL_MASK32 1 /* 32 bit emulation */ 146#endif 147 148/* 149 * This describes the access space for a sysctl request. This is needed 150 * so that we can use the interface from the kernel or from user-space. 151 */ 152struct sysctl_req { 153 struct thread *td; /* used for access checking */ 154 int lock; /* wiring state */ 155 void *oldptr; 156 size_t oldlen; 157 size_t oldidx; 158 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 159 void *newptr; 160 size_t newlen; 161 size_t newidx; 162 int (*newfunc)(struct sysctl_req *, void *, size_t); 163 size_t validlen; 164 int flags; 165}; 166 167SLIST_HEAD(sysctl_oid_list, sysctl_oid); 168 169/* 170 * This describes one "oid" in the MIB tree. Potentially more nodes can 171 * be hidden behind it, expanded by the handler. 172 */ 173struct sysctl_oid { 174 struct sysctl_oid_list oid_children; 175 struct sysctl_oid_list *oid_parent; 176 SLIST_ENTRY(sysctl_oid) oid_link; 177 int oid_number; 178 u_int oid_kind; 179 void *oid_arg1; 180 intptr_t oid_arg2; 181 const char *oid_name; 182 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 183 const char *oid_fmt; 184 int oid_refcnt; 185 u_int oid_running; 186 const char *oid_descr; 187}; 188 189#define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 190#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 191#define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1) 192 193int sysctl_handle_8(SYSCTL_HANDLER_ARGS); 194int sysctl_handle_16(SYSCTL_HANDLER_ARGS); 195int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 196int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 197int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 198int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 199int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 200int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 201int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS); 202 203int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS); 204int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS); 205 206int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 207int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 208int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 209 210/* 211 * These functions are used to add/remove an oid from the mib. 212 */ 213void sysctl_register_oid(struct sysctl_oid *oidp); 214void sysctl_unregister_oid(struct sysctl_oid *oidp); 215 216/* Declare a static oid to allow child oids to be added to it. */ 217#define SYSCTL_DECL(name) \ 218 extern struct sysctl_oid sysctl__##name 219 220/* Hide these in macros. */ 221#define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children) 222#define SYSCTL_PARENT(oid_ptr) \ 223 (((oid_ptr)->oid_parent != &sysctl__children) ? \ 224 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \ 225 oid_children) : (struct sysctl_oid *)NULL) 226#define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children) 227 228/* === Structs and macros related to context handling. === */ 229 230/* All dynamically created sysctls can be tracked in a context list. */ 231struct sysctl_ctx_entry { 232 struct sysctl_oid *entry; 233 TAILQ_ENTRY(sysctl_ctx_entry) link; 234}; 235 236TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 237 238#define SYSCTL_NODE_CHILDREN(parent, name) \ 239 sysctl__##parent##_##name.oid_children 240 241#ifndef NO_SYSCTL_DESCR 242#define __DESCR(d) d 243#else 244#define __DESCR(d) "" 245#endif 246 247/* This macro is only for internal use */ 248#define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr) \ 249 struct sysctl_oid id = { \ 250 .oid_parent = (parent_child_head), \ 251 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \ 252 .oid_number = (nbr), \ 253 .oid_kind = (kind), \ 254 .oid_arg1 = (a1), \ 255 .oid_arg2 = (a2), \ 256 .oid_name = (name), \ 257 .oid_handler = (handler), \ 258 .oid_fmt = (fmt), \ 259 .oid_descr = __DESCR(descr) \ 260 }; \ 261 DATA_SET(sysctl_set, id) 262 263/* This constructs a static "raw" MIB oid. */ 264#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 265 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 266 SYSCTL_CHILDREN(&sysctl__##parent), \ 267 nbr, #name, kind, a1, a2, handler, fmt, descr) 268 269/* This constructs a global "raw" MIB oid. */ 270#define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 271 SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 272 SYSCTL_CHILDREN(&sysctl__##parent), \ 273 nbr, #name, kind, a1, a2, handler, fmt, descr) 274 275#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 276 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 277 278/* This constructs a root node from which other nodes can hang. */ 279#define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \ 280 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \ 281 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \ 282 handler, "N", descr); \ 283 CTASSERT(((access) & CTLTYPE) == 0 || \ 284 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 285 286/* This constructs a node from which other oids can hang. */ 287#define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 288 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \ 289 NULL, 0, handler, "N", descr); \ 290 CTASSERT(((access) & CTLTYPE) == 0 || \ 291 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 292 293#define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 294({ \ 295 CTASSERT(((access) & CTLTYPE) == 0 || \ 296 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 297 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 298 NULL, 0, handler, "N", __DESCR(descr)); \ 299}) 300 301#define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \ 302({ \ 303 CTASSERT(((access) & CTLTYPE) == 0 || \ 304 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 305 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \ 306 CTLTYPE_NODE|(access), \ 307 NULL, 0, handler, "N", __DESCR(descr)); \ 308}) 309 310/* Oid for a string. len can be 0 to indicate '\0' termination. */ 311#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 312 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 313 arg, len, sysctl_handle_string, "A", descr); \ 314 CTASSERT(((access) & CTLTYPE) == 0 || \ 315 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING) 316 317#define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 318({ \ 319 char *__arg = (arg); \ 320 CTASSERT(((access) & CTLTYPE) == 0 || \ 321 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \ 322 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 323 __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \ 324}) 325 326/* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */ 327#define SYSCTL_NULL_U8_PTR ((unsigned *)NULL) 328#define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \ 329 SYSCTL_OID(parent, nbr, name, \ 330 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 331 ptr, val, sysctl_handle_8, "CU", descr); \ 332 CTASSERT((((access) & CTLTYPE) == 0 || \ 333 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \ 334 sizeof(uint8_t) == sizeof(*(ptr))) 335 336#define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \ 337({ \ 338 uint8_t *__ptr = (ptr); \ 339 CTASSERT(((access) & CTLTYPE) == 0 || \ 340 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \ 341 sysctl_add_oid(ctx, parent, nbr, name, \ 342 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 343 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr)); \ 344}) 345 346/* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */ 347#define SYSCTL_NULL_U16_PTR ((unsigned *)NULL) 348#define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \ 349 SYSCTL_OID(parent, nbr, name, \ 350 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 351 ptr, val, sysctl_handle_16, "SU", descr); \ 352 CTASSERT((((access) & CTLTYPE) == 0 || \ 353 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \ 354 sizeof(uint16_t) == sizeof(*(ptr))) 355 356#define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \ 357({ \ 358 uint16_t *__ptr = (ptr); \ 359 CTASSERT(((access) & CTLTYPE) == 0 || \ 360 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \ 361 sysctl_add_oid(ctx, parent, nbr, name, \ 362 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 363 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr)); \ 364}) 365 366/* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */ 367#define SYSCTL_NULL_INT_PTR ((int *)NULL) 368#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 369 SYSCTL_OID(parent, nbr, name, \ 370 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 371 ptr, val, sysctl_handle_int, "I", descr); \ 372 CTASSERT((((access) & CTLTYPE) == 0 || \ 373 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \ 374 sizeof(int) == sizeof(*(ptr))) 375 376#define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 377({ \ 378 int *__ptr = (ptr); \ 379 CTASSERT(((access) & CTLTYPE) == 0 || \ 380 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 381 sysctl_add_oid(ctx, parent, nbr, name, \ 382 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 383 __ptr, val, sysctl_handle_int, "I", __DESCR(descr)); \ 384}) 385 386/* Oid for an unsigned int. If ptr is NULL, val is returned. */ 387#define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL) 388#define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 389 SYSCTL_OID(parent, nbr, name, \ 390 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 391 ptr, val, sysctl_handle_int, "IU", descr); \ 392 CTASSERT((((access) & CTLTYPE) == 0 || \ 393 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \ 394 sizeof(unsigned) == sizeof(*(ptr))) 395 396#define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 397({ \ 398 unsigned *__ptr = (ptr); \ 399 CTASSERT(((access) & CTLTYPE) == 0 || \ 400 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \ 401 sysctl_add_oid(ctx, parent, nbr, name, \ 402 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 403 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr)); \ 404}) 405 406/* Oid for a long. The pointer must be non NULL. */ 407#define SYSCTL_NULL_LONG_PTR ((long *)NULL) 408#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 409 SYSCTL_OID(parent, nbr, name, \ 410 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 411 ptr, val, sysctl_handle_long, "L", descr); \ 412 CTASSERT((((access) & CTLTYPE) == 0 || \ 413 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \ 414 sizeof(long) == sizeof(*(ptr))) 415 416#define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 417({ \ 418 long *__ptr = (ptr); \ 419 CTASSERT(((access) & CTLTYPE) == 0 || \ 420 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \ 421 sysctl_add_oid(ctx, parent, nbr, name, \ 422 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 423 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr)); \ 424}) 425 426/* Oid for an unsigned long. The pointer must be non NULL. */ 427#define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL) 428#define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 429 SYSCTL_OID(parent, nbr, name, \ 430 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 431 ptr, val, sysctl_handle_long, "LU", descr); \ 432 CTASSERT((((access) & CTLTYPE) == 0 || \ 433 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \ 434 sizeof(unsigned long) == sizeof(*(ptr))) 435 436#define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 437({ \ 438 unsigned long *__ptr = (ptr); \ 439 CTASSERT(((access) & CTLTYPE) == 0 || \ 440 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \ 441 sysctl_add_oid(ctx, parent, nbr, name, \ 442 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 443 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)); \ 444}) 445 446/* Oid for a quad. The pointer must be non NULL. */ 447#define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL) 448#define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 449 SYSCTL_OID(parent, nbr, name, \ 450 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 451 ptr, val, sysctl_handle_64, "Q", descr); \ 452 CTASSERT((((access) & CTLTYPE) == 0 || \ 453 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 454 sizeof(int64_t) == sizeof(*(ptr))) 455 456#define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 457({ \ 458 int64_t *__ptr = (ptr); \ 459 CTASSERT(((access) & CTLTYPE) == 0 || \ 460 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 461 sysctl_add_oid(ctx, parent, nbr, name, \ 462 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 463 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr)); \ 464}) 465 466#define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL) 467#define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 468 SYSCTL_OID(parent, nbr, name, \ 469 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 470 ptr, val, sysctl_handle_64, "QU", descr); \ 471 CTASSERT((((access) & CTLTYPE) == 0 || \ 472 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 473 sizeof(uint64_t) == sizeof(*(ptr))) 474 475#define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \ 476({ \ 477 uint64_t *__ptr = (ptr); \ 478 CTASSERT(((access) & CTLTYPE) == 0 || \ 479 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 480 sysctl_add_oid(ctx, parent, nbr, name, \ 481 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 482 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr)); \ 483}) 484 485/* Oid for a CPU dependant variable */ 486#define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \ 487({ \ 488 struct sysctl_oid *__ret; \ 489 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \ 490 sizeof(unsigned) == sizeof(*(ptr))) && \ 491 ((access) & CTLTYPE) == 0); \ 492 if (sizeof(uint64_t) == sizeof(*(ptr))) { \ 493 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 494 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 495 (ptr), 0, sysctl_handle_64, "QU", \ 496 __DESCR(descr)); \ 497 } else { \ 498 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 499 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 500 (ptr), 0, sysctl_handle_int, "IU", \ 501 __DESCR(descr)); \ 502 } \ 503 __ret; \ 504}) 505 506/* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */ 507#define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \ 508 SYSCTL_OID(parent, nbr, name, \ 509 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 510 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \ 511 CTASSERT((((access) & CTLTYPE) == 0 || \ 512 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 513 sizeof(counter_u64_t) == sizeof(*(ptr)) && \ 514 sizeof(uint64_t) == sizeof(**(ptr))) 515 516#define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \ 517({ \ 518 counter_u64_t *__ptr = (ptr); \ 519 CTASSERT(((access) & CTLTYPE) == 0 || \ 520 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 521 sysctl_add_oid(ctx, parent, nbr, name, \ 522 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 523 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr)); \ 524}) 525 526/* Oid for an opaque object. Specified by a pointer and a length. */ 527#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 528 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 529 ptr, len, sysctl_handle_opaque, fmt, descr); \ 530 CTASSERT(((access) & CTLTYPE) == 0 || \ 531 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 532 533#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 534({ \ 535 CTASSERT(((access) & CTLTYPE) == 0 || \ 536 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 537 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 538 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)); \ 539}) 540 541/* Oid for a struct. Specified by a pointer and a type. */ 542#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 543 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 544 ptr, sizeof(struct type), sysctl_handle_opaque, \ 545 "S," #type, descr); \ 546 CTASSERT(((access) & CTLTYPE) == 0 || \ 547 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 548 549#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 550({ \ 551 CTASSERT(((access) & CTLTYPE) == 0 || \ 552 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 553 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 554 (ptr), sizeof(struct type), \ 555 sysctl_handle_opaque, "S," #type, __DESCR(descr)); \ 556}) 557 558/* Oid for a procedure. Specified by a pointer and an arg. */ 559#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 560 SYSCTL_OID(parent, nbr, name, (access), \ 561 ptr, arg, handler, fmt, descr); \ 562 CTASSERT(((access) & CTLTYPE) != 0) 563 564#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 565({ \ 566 CTASSERT(((access) & CTLTYPE) != 0); \ 567 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 568 (ptr), (arg), (handler), (fmt), __DESCR(descr)); \ 569}) 570 571/* Oid to handle limits on uma(9) zone specified by pointer. */ 572#define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \ 573 SYSCTL_OID(parent, nbr, name, \ 574 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 575 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \ 576 CTASSERT(((access) & CTLTYPE) == 0 || \ 577 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 578 579#define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \ 580({ \ 581 uma_zone_t __ptr = (ptr); \ 582 CTASSERT(((access) & CTLTYPE) == 0 || \ 583 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 584 sysctl_add_oid(ctx, parent, nbr, name, \ 585 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 586 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr)); \ 587}) 588 589/* Oid to obtain current use of uma(9) zone specified by pointer. */ 590#define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \ 591 SYSCTL_OID(parent, nbr, name, \ 592 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 593 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \ 594 CTASSERT(((access) & CTLTYPE) == 0 || \ 595 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 596 597#define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \ 598({ \ 599 uma_zone_t __ptr = (ptr); \ 600 CTASSERT(((access) & CTLTYPE) == 0 || \ 601 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 602 sysctl_add_oid(ctx, parent, nbr, name, \ 603 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 604 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr)); \ 605}) 606 607/* 608 * A macro to generate a read-only sysctl to indicate the presense of optional 609 * kernel features. 610 */ 611#define FEATURE(name, desc) \ 612 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 613 SYSCTL_NULL_INT_PTR, 1, desc) 614 615#endif /* _KERNEL */ 616 617/* 618 * Top-level identifiers 619 */ 620#define CTL_UNSPEC 0 /* unused */ 621#define CTL_KERN 1 /* "high kernel": proc, limits */ 622#define CTL_VM 2 /* virtual memory */ 623#define CTL_VFS 3 /* filesystem, mount type is next */ 624#define CTL_NET 4 /* network, see socket.h */ 625#define CTL_DEBUG 5 /* debugging parameters */ 626#define CTL_HW 6 /* generic cpu/io */ 627#define CTL_MACHDEP 7 /* machine dependent */ 628#define CTL_USER 8 /* user-level */ 629#define CTL_P1003_1B 9 /* POSIX 1003.1B */ 630 631/* 632 * CTL_KERN identifiers 633 */ 634#define KERN_OSTYPE 1 /* string: system version */ 635#define KERN_OSRELEASE 2 /* string: system release */ 636#define KERN_OSREV 3 /* int: system revision */ 637#define KERN_VERSION 4 /* string: compile time info */ 638#define KERN_MAXVNODES 5 /* int: max vnodes */ 639#define KERN_MAXPROC 6 /* int: max processes */ 640#define KERN_MAXFILES 7 /* int: max open files */ 641#define KERN_ARGMAX 8 /* int: max arguments to exec */ 642#define KERN_SECURELVL 9 /* int: system security level */ 643#define KERN_HOSTNAME 10 /* string: hostname */ 644#define KERN_HOSTID 11 /* int: host identifier */ 645#define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 646#define KERN_VNODE 13 /* struct: vnode structures */ 647#define KERN_PROC 14 /* struct: process entries */ 648#define KERN_FILE 15 /* struct: file entries */ 649#define KERN_PROF 16 /* node: kernel profiling info */ 650#define KERN_POSIX1 17 /* int: POSIX.1 version */ 651#define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 652#define KERN_JOB_CONTROL 19 /* int: is job control available */ 653#define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 654#define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 655#define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 656#define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 657#define KERN_OSRELDATE 24 /* int: kernel release date */ 658#define KERN_NTP_PLL 25 /* node: NTP PLL control */ 659#define KERN_BOOTFILE 26 /* string: name of booted kernel */ 660#define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 661#define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 662#define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 663#define KERN_IPC 30 /* node: anything related to IPC */ 664#define KERN_DUMMY 31 /* unused */ 665#define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 666#define KERN_USRSTACK 33 /* int: address of USRSTACK */ 667#define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 668#define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 669#define KERN_HOSTUUID 36 /* string: host UUID identifier */ 670#define KERN_ARND 37 /* int: from arc4rand() */ 671/* 672 * KERN_PROC subtypes 673 */ 674#define KERN_PROC_ALL 0 /* everything */ 675#define KERN_PROC_PID 1 /* by process id */ 676#define KERN_PROC_PGRP 2 /* by process group id */ 677#define KERN_PROC_SESSION 3 /* by session of pid */ 678#define KERN_PROC_TTY 4 /* by controlling tty */ 679#define KERN_PROC_UID 5 /* by effective uid */ 680#define KERN_PROC_RUID 6 /* by real uid */ 681#define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 682#define KERN_PROC_PROC 8 /* only return procs */ 683#define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 684#define KERN_PROC_RGID 10 /* by real group id */ 685#define KERN_PROC_GID 11 /* by effective group id */ 686#define KERN_PROC_PATHNAME 12 /* path to executable */ 687#define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 688#define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 689#define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 690#define KERN_PROC_INC_THREAD 0x10 /* 691 * modifier for pid, pgrp, tty, 692 * uid, ruid, gid, rgid and proc 693 * This effectively uses 16-31 694 */ 695#define KERN_PROC_VMMAP 32 /* VM map entries for process */ 696#define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 697#define KERN_PROC_GROUPS 34 /* process groups */ 698#define KERN_PROC_ENV 35 /* get environment */ 699#define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */ 700#define KERN_PROC_RLIMIT 37 /* process resource limits */ 701#define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ 702#define KERN_PROC_UMASK 39 /* process umask */ 703#define KERN_PROC_OSREL 40 /* osreldate for process binary */ 704#define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */ 705#define KERN_PROC_CWD 42 /* process current working directory */ 706#define KERN_PROC_NFDS 43 /* number of open file descriptors */ 707 708/* 709 * KERN_IPC identifiers 710 */ 711#define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 712#define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 713#define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 714#define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 715#define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 716#define KIPC_MAX_HDR 6 /* int: max total length of headers */ 717#define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 718 719/* 720 * CTL_HW identifiers 721 */ 722#define HW_MACHINE 1 /* string: machine class */ 723#define HW_MODEL 2 /* string: specific machine model */ 724#define HW_NCPU 3 /* int: number of cpus */ 725#define HW_BYTEORDER 4 /* int: machine byte order */ 726#define HW_PHYSMEM 5 /* int: total memory */ 727#define HW_USERMEM 6 /* int: non-kernel memory */ 728#define HW_PAGESIZE 7 /* int: software page size */ 729#define HW_DISKNAMES 8 /* strings: disk drive names */ 730#define HW_DISKSTATS 9 /* struct: diskstats[] */ 731#define HW_FLOATINGPT 10 /* int: has HW floating point? */ 732#define HW_MACHINE_ARCH 11 /* string: machine architecture */ 733#define HW_REALMEM 12 /* int: 'real' memory */ 734 735/* 736 * CTL_USER definitions 737 */ 738#define USER_CS_PATH 1 /* string: _CS_PATH */ 739#define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 740#define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 741#define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 742#define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 743#define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 744#define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 745#define USER_LINE_MAX 8 /* int: LINE_MAX */ 746#define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 747#define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 748#define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 749#define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 750#define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 751#define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 752#define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 753#define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 754#define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 755#define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 756#define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 757#define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 758 759#define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 760#define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 761#define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 762#define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 763#define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 764#define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 765#define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 766#define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 767#define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 768#define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 769#define CTL_P1003_1B_FSYNC 11 /* boolean */ 770#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 771#define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 772#define CTL_P1003_1B_TIMERS 14 /* boolean */ 773#define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 774#define CTL_P1003_1B_AIO_MAX 16 /* int */ 775#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 776#define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 777#define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 778#define CTL_P1003_1B_PAGESIZE 20 /* int */ 779#define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 780#define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 781#define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 782#define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 783#define CTL_P1003_1B_TIMER_MAX 25 /* int */ 784 785#define CTL_P1003_1B_MAXID 26 786 787#ifdef _KERNEL 788 789/* 790 * Declare some common oids. 791 */ 792extern struct sysctl_oid_list sysctl__children; 793SYSCTL_DECL(_kern); 794SYSCTL_DECL(_kern_features); 795SYSCTL_DECL(_kern_ipc); 796SYSCTL_DECL(_kern_proc); 797SYSCTL_DECL(_kern_sched); 798SYSCTL_DECL(_kern_sched_stats); 799SYSCTL_DECL(_sysctl); 800SYSCTL_DECL(_vm); 801SYSCTL_DECL(_vm_stats); 802SYSCTL_DECL(_vm_stats_misc); 803SYSCTL_DECL(_vfs); 804SYSCTL_DECL(_net); 805SYSCTL_DECL(_debug); 806SYSCTL_DECL(_debug_sizeof); 807SYSCTL_DECL(_dev); 808SYSCTL_DECL(_hw); 809SYSCTL_DECL(_hw_bus); 810SYSCTL_DECL(_hw_bus_devices); 811SYSCTL_DECL(_hw_bus_info); 812SYSCTL_DECL(_machdep); 813SYSCTL_DECL(_user); 814SYSCTL_DECL(_compat); 815SYSCTL_DECL(_regression); 816SYSCTL_DECL(_security); 817SYSCTL_DECL(_security_bsd); 818 819extern char machine[]; 820extern char osrelease[]; 821extern char ostype[]; 822extern char kern_ident[]; 823 824/* Dynamic oid handling */ 825struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 826 struct sysctl_oid_list *parent, int nbr, const char *name, int kind, 827 void *arg1, intptr_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS), 828 const char *fmt, const char *descr); 829int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 830 int recurse); 831void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 832int sysctl_move_oid(struct sysctl_oid *oidp, 833 struct sysctl_oid_list *parent); 834int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 835int sysctl_ctx_init(struct sysctl_ctx_list *clist); 836int sysctl_ctx_free(struct sysctl_ctx_list *clist); 837struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 838 struct sysctl_oid *oidp); 839struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 840 struct sysctl_oid *oidp); 841int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 842 struct sysctl_oid *oidp); 843 844int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 845 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 846 int flags); 847int kernel_sysctlbyname(struct thread *td, char *name, void *old, 848 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 849 int flags); 850int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 851 size_t *oldlenp, int inkernel, void *new, size_t newlen, 852 size_t *retval, int flags); 853int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 854 int *nindx, struct sysctl_req *req); 855void sysctl_wlock(void); 856void sysctl_wunlock(void); 857int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 858 859struct sbuf; 860struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 861 struct sysctl_req *); 862#else /* !_KERNEL */ 863#include <sys/cdefs.h> 864 865__BEGIN_DECLS 866int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 867int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 868int sysctlnametomib(const char *, int *, size_t *); 869__END_DECLS 870#endif /* _KERNEL */ 871 872#endif /* !_SYS_SYSCTL_H_ */ 873