Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/sys/sysctl.h
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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 * $FreeBSD$ 34 */ 35 36 #ifndef _SYS_SYSCTL_H_ 37 #define _SYS_SYSCTL_H_ 38 39 #include <sys/queue.h> 40 41 struct 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 */ 60 struct 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 77 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 78 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 79 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 80 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 81 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 82 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 83 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 84 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 85 #define CTLMASK_SECURE 0x00F00000 /* Secure level */ 86 #define CTLFLAG_TUN 0x00080000 /* Tunable variable */ 87 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 88 #define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN) 89 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */ 90 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 91 #define CTLFLAG_DYING 0x00010000 /* oid is being removed */ 92 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */ 93 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */ 94 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR) 95 96 /* 97 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 98 * 99 * Secure when the securelevel is raised to at least N. 100 */ 101 #define CTLSHIFT_SECURE 20 102 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 103 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 104 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 105 106 /* 107 * USE THIS instead of a hardwired number from the categories below 108 * to get dynamically assigned sysctl entries using the linker-set 109 * technology. This is the way nearly all new sysctl variables should 110 * be implemented. 111 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 112 */ 113 #define OID_AUTO (-1) 114 115 /* 116 * The starting number for dynamically-assigned entries. WARNING! 117 * ALL static sysctl entries should have numbers LESS than this! 118 */ 119 #define CTL_AUTO_START 0x100 120 121 #ifdef _KERNEL 122 #include <sys/linker_set.h> 123 124 #ifdef KLD_MODULE 125 /* XXX allow overspecification of type in external kernel modules */ 126 #define SYSCTL_CT_ASSERT_MASK CTLTYPE 127 #else 128 #define SYSCTL_CT_ASSERT_MASK 0 129 #endif 130 131 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 132 intptr_t arg2, struct sysctl_req *req 133 134 /* definitions for sysctl_req 'lock' member */ 135 #define REQ_UNWIRED 1 136 #define REQ_WIRED 2 137 138 /* definitions for sysctl_req 'flags' member */ 139 #if defined(__amd64__) || defined(__ia64__) || defined(__powerpc64__) 140 #define SCTL_MASK32 1 /* 32 bit emulation */ 141 #endif 142 143 /* 144 * This describes the access space for a sysctl request. This is needed 145 * so that we can use the interface from the kernel or from user-space. 146 */ 147 struct sysctl_req { 148 struct thread *td; /* used for access checking */ 149 int lock; /* wiring state */ 150 void *oldptr; 151 size_t oldlen; 152 size_t oldidx; 153 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 154 void *newptr; 155 size_t newlen; 156 size_t newidx; 157 int (*newfunc)(struct sysctl_req *, void *, size_t); 158 size_t validlen; 159 int flags; 160 }; 161 162 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 163 164 /* 165 * This describes one "oid" in the MIB tree. Potentially more nodes can 166 * be hidden behind it, expanded by the handler. 167 */ 168 struct sysctl_oid { 169 struct sysctl_oid_list *oid_parent; 170 SLIST_ENTRY(sysctl_oid) oid_link; 171 int oid_number; 172 u_int oid_kind; 173 void *oid_arg1; 174 intptr_t oid_arg2; 175 const char *oid_name; 176 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 177 const char *oid_fmt; 178 int oid_refcnt; 179 u_int oid_running; 180 const char *oid_descr; 181 }; 182 183 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 184 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 185 186 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 187 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 188 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 189 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 190 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 191 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 192 193 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 194 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 195 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 196 197 /* 198 * These functions are used to add/remove an oid from the mib. 199 */ 200 void sysctl_register_oid(struct sysctl_oid *oidp); 201 void sysctl_unregister_oid(struct sysctl_oid *oidp); 202 203 /* Declare a static oid to allow child oids to be added to it. */ 204 #define SYSCTL_DECL(name) \ 205 extern struct sysctl_oid_list sysctl_##name##_children 206 207 /* Hide these in macros */ 208 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 209 (oid_ptr)->oid_arg1 210 #define SYSCTL_CHILDREN_SET(oid_ptr, val) \ 211 (oid_ptr)->oid_arg1 = (val); 212 #define SYSCTL_STATIC_CHILDREN(oid_name) \ 213 (&sysctl_##oid_name##_children) 214 215 /* === Structs and macros related to context handling === */ 216 217 /* All dynamically created sysctls can be tracked in a context list. */ 218 struct sysctl_ctx_entry { 219 struct sysctl_oid *entry; 220 TAILQ_ENTRY(sysctl_ctx_entry) link; 221 }; 222 223 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 224 225 #define SYSCTL_NODE_CHILDREN(parent, name) \ 226 sysctl_##parent##_##name##_children 227 228 #ifndef NO_SYSCTL_DESCR 229 #define __DESCR(d) d 230 #else 231 #define __DESCR(d) "" 232 #endif 233 234 /* This constructs a "raw" MIB oid. */ 235 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 236 static struct sysctl_oid sysctl__##parent##_##name = { \ 237 &sysctl_##parent##_children, { NULL }, nbr, kind, \ 238 a1, a2, #name, handler, fmt, 0, 0, __DESCR(descr) }; \ 239 DATA_SET(sysctl_set, sysctl__##parent##_##name) 240 241 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 242 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 243 244 /* This constructs a root node from which other nodes can hang. */ 245 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \ 246 SYSCTL_NODE(, nbr, name, access, handler, descr) 247 248 /* This constructs a node from which other oids can hang. */ 249 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 250 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 251 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 252 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "N", descr); \ 253 CTASSERT(((access) & CTLTYPE) == 0 || \ 254 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 255 256 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \ 257 SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(), nbr, name, access, handler, descr) 258 259 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 260 ({ \ 261 CTASSERT(((access) & CTLTYPE) == 0 || \ 262 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 263 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 264 NULL, 0, handler, "N", __DESCR(descr)); \ 265 }) 266 267 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 268 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 269 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 270 arg, len, sysctl_handle_string, "A", descr); \ 271 CTASSERT(((access) & CTLTYPE) == 0 || \ 272 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING) 273 274 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 275 ({ \ 276 char *__arg = (arg); \ 277 CTASSERT(((access) & CTLTYPE) == 0 || \ 278 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \ 279 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 280 __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \ 281 }) 282 283 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */ 284 #define SYSCTL_NULL_INT_PTR ((int *)NULL) 285 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 286 SYSCTL_OID(parent, nbr, name, \ 287 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 288 ptr, val, sysctl_handle_int, "I", descr); \ 289 CTASSERT((((access) & CTLTYPE) == 0 || \ 290 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \ 291 sizeof(int) == sizeof(*(ptr))) 292 293 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 294 ({ \ 295 int *__ptr = (ptr); \ 296 CTASSERT(((access) & CTLTYPE) == 0 || \ 297 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 298 sysctl_add_oid(ctx, parent, nbr, name, \ 299 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 300 __ptr, val, sysctl_handle_int, "I", __DESCR(descr)); \ 301 }) 302 303 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 304 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL) 305 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 306 SYSCTL_OID(parent, nbr, name, \ 307 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 308 ptr, val, sysctl_handle_int, "IU", descr); \ 309 CTASSERT((((access) & CTLTYPE) == 0 || \ 310 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \ 311 sizeof(unsigned) == sizeof(*(ptr))) 312 313 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 314 ({ \ 315 unsigned *__ptr = (ptr); \ 316 CTASSERT(((access) & CTLTYPE) == 0 || \ 317 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \ 318 sysctl_add_oid(ctx, parent, nbr, name, \ 319 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 320 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr)); \ 321 }) 322 323 /* Oid for a long. The pointer must be non NULL. */ 324 #define SYSCTL_NULL_LONG_PTR ((long *)NULL) 325 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 326 SYSCTL_OID(parent, nbr, name, \ 327 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 328 ptr, val, sysctl_handle_long, "L", descr); \ 329 CTASSERT((((access) & CTLTYPE) == 0 || \ 330 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \ 331 sizeof(long) == sizeof(*(ptr))) 332 333 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 334 ({ \ 335 long *__ptr = (ptr); \ 336 CTASSERT(((access) & CTLTYPE) == 0 || \ 337 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \ 338 sysctl_add_oid(ctx, parent, nbr, name, \ 339 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 340 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr)); \ 341 }) 342 343 /* Oid for an unsigned long. The pointer must be non NULL. */ 344 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL) 345 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 346 SYSCTL_OID(parent, nbr, name, \ 347 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 348 ptr, val, sysctl_handle_long, "LU", descr); \ 349 CTASSERT((((access) & CTLTYPE) == 0 || \ 350 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \ 351 sizeof(unsigned long) == sizeof(*(ptr))) 352 353 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 354 ({ \ 355 unsigned long *__ptr = (ptr); \ 356 CTASSERT(((access) & CTLTYPE) == 0 || \ 357 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \ 358 sysctl_add_oid(ctx, parent, nbr, name, \ 359 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 360 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)); \ 361 }) 362 363 /* Oid for a quad. The pointer must be non NULL. */ 364 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL) 365 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 366 SYSCTL_OID(parent, nbr, name, \ 367 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 368 ptr, val, sysctl_handle_64, "Q", descr); \ 369 CTASSERT((((access) & CTLTYPE) == 0 || \ 370 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 371 sizeof(int64_t) == sizeof(*(ptr))) 372 373 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 374 ({ \ 375 int64_t *__ptr = (ptr); \ 376 CTASSERT(((access) & CTLTYPE) == 0 || \ 377 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 378 sysctl_add_oid(ctx, parent, nbr, name, \ 379 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 380 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr)); \ 381 }) 382 383 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL) 384 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 385 SYSCTL_OID(parent, nbr, name, \ 386 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 387 ptr, val, sysctl_handle_64, "QU", descr); \ 388 CTASSERT((((access) & CTLTYPE) == 0 || \ 389 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 390 sizeof(uint64_t) == sizeof(*(ptr))) 391 392 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \ 393 ({ \ 394 uint64_t *__ptr = (ptr); \ 395 CTASSERT(((access) & CTLTYPE) == 0 || \ 396 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 397 sysctl_add_oid(ctx, parent, nbr, name, \ 398 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 399 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr)); \ 400 }) 401 402 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */ 403 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \ 404 SYSCTL_ASSERT_TYPE(UINT64, ptr, parent, name); \ 405 SYSCTL_OID(parent, nbr, name, \ 406 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 407 ptr, 0, sysctl_handle_counter_u64, "QU", descr) 408 409 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr)\ 410 sysctl_add_oid(ctx, parent, nbr, name, \ 411 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 412 SYSCTL_ADD_ASSERT_TYPE(UINT64, ptr), 0, \ 413 sysctl_handle_counter_u64, "QU", __DESCR(descr)) 414 415 /* Oid for a CPU dependant variable */ 416 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \ 417 ({ \ 418 struct sysctl_oid *__ret; \ 419 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \ 420 sizeof(unsigned) == sizeof(*(ptr))) && \ 421 ((access) & CTLTYPE) == 0); \ 422 if (sizeof(uint64_t) == sizeof(*(ptr))) { \ 423 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 424 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 425 (ptr), 0, sysctl_handle_64, "QU", \ 426 __DESCR(descr)); \ 427 } else { \ 428 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 429 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 430 (ptr), 0, sysctl_handle_int, "IU", \ 431 __DESCR(descr)); \ 432 } \ 433 __ret; \ 434 }) 435 436 /* Oid for an opaque object. Specified by a pointer and a length. */ 437 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 438 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 439 ptr, len, sysctl_handle_opaque, fmt, descr); \ 440 CTASSERT(((access) & CTLTYPE) == 0 || \ 441 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 442 443 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 444 ({ \ 445 CTASSERT(((access) & CTLTYPE) == 0 || \ 446 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 447 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 448 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)); \ 449 }) 450 451 /* Oid for a struct. Specified by a pointer and a type. */ 452 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 453 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 454 ptr, sizeof(struct type), sysctl_handle_opaque, \ 455 "S," #type, descr); \ 456 CTASSERT(((access) & CTLTYPE) == 0 || \ 457 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 458 459 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 460 ({ \ 461 CTASSERT(((access) & CTLTYPE) == 0 || \ 462 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 463 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 464 (ptr), sizeof(struct type), \ 465 sysctl_handle_opaque, "S," #type, __DESCR(descr)); \ 466 }) 467 468 /* Oid for a procedure. Specified by a pointer and an arg. */ 469 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 470 SYSCTL_OID(parent, nbr, name, (access), \ 471 ptr, arg, handler, fmt, descr); \ 472 CTASSERT(((access) & CTLTYPE) != 0) 473 474 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 475 ({ \ 476 CTASSERT(((access) & CTLTYPE) != 0); \ 477 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 478 (ptr), (arg), (handler), (fmt), __DESCR(descr)); \ 479 }) 480 481 /* 482 * A macro to generate a read-only sysctl to indicate the presense of optional 483 * kernel features. 484 */ 485 #define FEATURE(name, desc) \ 486 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 487 SYSCTL_NULL_INT_PTR, 1, desc) 488 489 #endif /* _KERNEL */ 490 491 /* 492 * Top-level identifiers 493 */ 494 #define CTL_UNSPEC 0 /* unused */ 495 #define CTL_KERN 1 /* "high kernel": proc, limits */ 496 #define CTL_VM 2 /* virtual memory */ 497 #define CTL_VFS 3 /* filesystem, mount type is next */ 498 #define CTL_NET 4 /* network, see socket.h */ 499 #define CTL_DEBUG 5 /* debugging parameters */ 500 #define CTL_HW 6 /* generic cpu/io */ 501 #define CTL_MACHDEP 7 /* machine dependent */ 502 #define CTL_USER 8 /* user-level */ 503 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 504 #define CTL_MAXID 10 /* number of valid top-level ids */ 505 506 #define CTL_NAMES { \ 507 { 0, 0 }, \ 508 { "kern", CTLTYPE_NODE }, \ 509 { "vm", CTLTYPE_NODE }, \ 510 { "vfs", CTLTYPE_NODE }, \ 511 { "net", CTLTYPE_NODE }, \ 512 { "debug", CTLTYPE_NODE }, \ 513 { "hw", CTLTYPE_NODE }, \ 514 { "machdep", CTLTYPE_NODE }, \ 515 { "user", CTLTYPE_NODE }, \ 516 { "p1003_1b", CTLTYPE_NODE }, \ 517 } 518 519 /* 520 * CTL_KERN identifiers 521 */ 522 #define KERN_OSTYPE 1 /* string: system version */ 523 #define KERN_OSRELEASE 2 /* string: system release */ 524 #define KERN_OSREV 3 /* int: system revision */ 525 #define KERN_VERSION 4 /* string: compile time info */ 526 #define KERN_MAXVNODES 5 /* int: max vnodes */ 527 #define KERN_MAXPROC 6 /* int: max processes */ 528 #define KERN_MAXFILES 7 /* int: max open files */ 529 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 530 #define KERN_SECURELVL 9 /* int: system security level */ 531 #define KERN_HOSTNAME 10 /* string: hostname */ 532 #define KERN_HOSTID 11 /* int: host identifier */ 533 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 534 #define KERN_VNODE 13 /* struct: vnode structures */ 535 #define KERN_PROC 14 /* struct: process entries */ 536 #define KERN_FILE 15 /* struct: file entries */ 537 #define KERN_PROF 16 /* node: kernel profiling info */ 538 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 539 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 540 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 541 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 542 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 543 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 544 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 545 #define KERN_OSRELDATE 24 /* int: kernel release date */ 546 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 547 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 548 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 549 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 550 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 551 #define KERN_IPC 30 /* node: anything related to IPC */ 552 #define KERN_DUMMY 31 /* unused */ 553 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 554 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 555 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 556 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 557 #define KERN_HOSTUUID 36 /* string: host UUID identifier */ 558 #define KERN_ARND 37 /* int: from arc4rand() */ 559 #define KERN_MAXID 38 /* number of valid kern ids */ 560 561 #define CTL_KERN_NAMES { \ 562 { 0, 0 }, \ 563 { "ostype", CTLTYPE_STRING }, \ 564 { "osrelease", CTLTYPE_STRING }, \ 565 { "osrevision", CTLTYPE_INT }, \ 566 { "version", CTLTYPE_STRING }, \ 567 { "maxvnodes", CTLTYPE_INT }, \ 568 { "maxproc", CTLTYPE_INT }, \ 569 { "maxfiles", CTLTYPE_INT }, \ 570 { "argmax", CTLTYPE_INT }, \ 571 { "securelevel", CTLTYPE_INT }, \ 572 { "hostname", CTLTYPE_STRING }, \ 573 { "hostid", CTLTYPE_UINT }, \ 574 { "clockrate", CTLTYPE_STRUCT }, \ 575 { "vnode", CTLTYPE_STRUCT }, \ 576 { "proc", CTLTYPE_STRUCT }, \ 577 { "file", CTLTYPE_STRUCT }, \ 578 { "profiling", CTLTYPE_NODE }, \ 579 { "posix1version", CTLTYPE_INT }, \ 580 { "ngroups", CTLTYPE_INT }, \ 581 { "job_control", CTLTYPE_INT }, \ 582 { "saved_ids", CTLTYPE_INT }, \ 583 { "boottime", CTLTYPE_STRUCT }, \ 584 { "nisdomainname", CTLTYPE_STRING }, \ 585 { "update", CTLTYPE_INT }, \ 586 { "osreldate", CTLTYPE_INT }, \ 587 { "ntp_pll", CTLTYPE_NODE }, \ 588 { "bootfile", CTLTYPE_STRING }, \ 589 { "maxfilesperproc", CTLTYPE_INT }, \ 590 { "maxprocperuid", CTLTYPE_INT }, \ 591 { "ipc", CTLTYPE_NODE }, \ 592 { "dummy", CTLTYPE_INT }, \ 593 { "ps_strings", CTLTYPE_INT }, \ 594 { "usrstack", CTLTYPE_INT }, \ 595 { "logsigexit", CTLTYPE_INT }, \ 596 { "iov_max", CTLTYPE_INT }, \ 597 { "hostuuid", CTLTYPE_STRING }, \ 598 { "arc4rand", CTLTYPE_OPAQUE }, \ 599 } 600 601 /* 602 * CTL_VFS identifiers 603 */ 604 #define CTL_VFS_NAMES { \ 605 { "vfsconf", CTLTYPE_STRUCT }, \ 606 } 607 608 /* 609 * KERN_PROC subtypes 610 */ 611 #define KERN_PROC_ALL 0 /* everything */ 612 #define KERN_PROC_PID 1 /* by process id */ 613 #define KERN_PROC_PGRP 2 /* by process group id */ 614 #define KERN_PROC_SESSION 3 /* by session of pid */ 615 #define KERN_PROC_TTY 4 /* by controlling tty */ 616 #define KERN_PROC_UID 5 /* by effective uid */ 617 #define KERN_PROC_RUID 6 /* by real uid */ 618 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 619 #define KERN_PROC_PROC 8 /* only return procs */ 620 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 621 #define KERN_PROC_RGID 10 /* by real group id */ 622 #define KERN_PROC_GID 11 /* by effective group id */ 623 #define KERN_PROC_PATHNAME 12 /* path to executable */ 624 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 625 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 626 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 627 #define KERN_PROC_INC_THREAD 0x10 /* 628 * modifier for pid, pgrp, tty, 629 * uid, ruid, gid, rgid and proc 630 * This effectively uses 16-31 631 */ 632 #define KERN_PROC_VMMAP 32 /* VM map entries for process */ 633 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 634 #define KERN_PROC_GROUPS 34 /* process groups */ 635 #define KERN_PROC_ENV 35 /* get environment */ 636 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */ 637 #define KERN_PROC_RLIMIT 37 /* process resource limits */ 638 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ 639 #define KERN_PROC_UMASK 39 /* process umask */ 640 #define KERN_PROC_OSREL 40 /* osreldate for process binary */ 641 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */ 642 643 /* 644 * KERN_IPC identifiers 645 */ 646 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 647 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 648 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 649 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 650 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 651 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 652 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 653 654 /* 655 * CTL_HW identifiers 656 */ 657 #define HW_MACHINE 1 /* string: machine class */ 658 #define HW_MODEL 2 /* string: specific machine model */ 659 #define HW_NCPU 3 /* int: number of cpus */ 660 #define HW_BYTEORDER 4 /* int: machine byte order */ 661 #define HW_PHYSMEM 5 /* int: total memory */ 662 #define HW_USERMEM 6 /* int: non-kernel memory */ 663 #define HW_PAGESIZE 7 /* int: software page size */ 664 #define HW_DISKNAMES 8 /* strings: disk drive names */ 665 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 666 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 667 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 668 #define HW_REALMEM 12 /* int: 'real' memory */ 669 #define HW_MAXID 13 /* number of valid hw ids */ 670 671 #define CTL_HW_NAMES { \ 672 { 0, 0 }, \ 673 { "machine", CTLTYPE_STRING }, \ 674 { "model", CTLTYPE_STRING }, \ 675 { "ncpu", CTLTYPE_INT }, \ 676 { "byteorder", CTLTYPE_INT }, \ 677 { "physmem", CTLTYPE_ULONG }, \ 678 { "usermem", CTLTYPE_ULONG }, \ 679 { "pagesize", CTLTYPE_INT }, \ 680 { "disknames", CTLTYPE_STRUCT }, \ 681 { "diskstats", CTLTYPE_STRUCT }, \ 682 { "floatingpoint", CTLTYPE_INT }, \ 683 { "machine_arch", CTLTYPE_STRING }, \ 684 { "realmem", CTLTYPE_ULONG }, \ 685 } 686 687 /* 688 * CTL_USER definitions 689 */ 690 #define USER_CS_PATH 1 /* string: _CS_PATH */ 691 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 692 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 693 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 694 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 695 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 696 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 697 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 698 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 699 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 700 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 701 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 702 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 703 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 704 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 705 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 706 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 707 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 708 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 709 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 710 #define USER_MAXID 21 /* number of valid user ids */ 711 712 #define CTL_USER_NAMES { \ 713 { 0, 0 }, \ 714 { "cs_path", CTLTYPE_STRING }, \ 715 { "bc_base_max", CTLTYPE_INT }, \ 716 { "bc_dim_max", CTLTYPE_INT }, \ 717 { "bc_scale_max", CTLTYPE_INT }, \ 718 { "bc_string_max", CTLTYPE_INT }, \ 719 { "coll_weights_max", CTLTYPE_INT }, \ 720 { "expr_nest_max", CTLTYPE_INT }, \ 721 { "line_max", CTLTYPE_INT }, \ 722 { "re_dup_max", CTLTYPE_INT }, \ 723 { "posix2_version", CTLTYPE_INT }, \ 724 { "posix2_c_bind", CTLTYPE_INT }, \ 725 { "posix2_c_dev", CTLTYPE_INT }, \ 726 { "posix2_char_term", CTLTYPE_INT }, \ 727 { "posix2_fort_dev", CTLTYPE_INT }, \ 728 { "posix2_fort_run", CTLTYPE_INT }, \ 729 { "posix2_localedef", CTLTYPE_INT }, \ 730 { "posix2_sw_dev", CTLTYPE_INT }, \ 731 { "posix2_upe", CTLTYPE_INT }, \ 732 { "stream_max", CTLTYPE_INT }, \ 733 { "tzname_max", CTLTYPE_INT }, \ 734 } 735 736 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 737 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 738 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 739 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 740 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 741 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 742 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 743 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 744 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 745 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 746 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 747 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 748 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 749 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 750 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 751 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 752 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 753 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 754 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 755 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 756 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 757 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 758 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 759 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 760 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 761 762 #define CTL_P1003_1B_MAXID 26 763 764 #define CTL_P1003_1B_NAMES { \ 765 { 0, 0 }, \ 766 { "asynchronous_io", CTLTYPE_INT }, \ 767 { "mapped_files", CTLTYPE_INT }, \ 768 { "memlock", CTLTYPE_INT }, \ 769 { "memlock_range", CTLTYPE_INT }, \ 770 { "memory_protection", CTLTYPE_INT }, \ 771 { "message_passing", CTLTYPE_INT }, \ 772 { "prioritized_io", CTLTYPE_INT }, \ 773 { "priority_scheduling", CTLTYPE_INT }, \ 774 { "realtime_signals", CTLTYPE_INT }, \ 775 { "semaphores", CTLTYPE_INT }, \ 776 { "fsync", CTLTYPE_INT }, \ 777 { "shared_memory_objects", CTLTYPE_INT }, \ 778 { "synchronized_io", CTLTYPE_INT }, \ 779 { "timers", CTLTYPE_INT }, \ 780 { "aio_listio_max", CTLTYPE_INT }, \ 781 { "aio_max", CTLTYPE_INT }, \ 782 { "aio_prio_delta_max", CTLTYPE_INT }, \ 783 { "delaytimer_max", CTLTYPE_INT }, \ 784 { "mq_open_max", CTLTYPE_INT }, \ 785 { "pagesize", CTLTYPE_INT }, \ 786 { "rtsig_max", CTLTYPE_INT }, \ 787 { "nsems_max", CTLTYPE_INT }, \ 788 { "sem_value_max", CTLTYPE_INT }, \ 789 { "sigqueue_max", CTLTYPE_INT }, \ 790 { "timer_max", CTLTYPE_INT }, \ 791 } 792 793 #ifdef _KERNEL 794 795 /* 796 * Declare some common oids. 797 */ 798 extern struct sysctl_oid_list sysctl__children; 799 SYSCTL_DECL(_kern); 800 SYSCTL_DECL(_kern_features); 801 SYSCTL_DECL(_kern_ipc); 802 SYSCTL_DECL(_kern_proc); 803 SYSCTL_DECL(_kern_sched); 804 SYSCTL_DECL(_kern_sched_stats); 805 SYSCTL_DECL(_sysctl); 806 SYSCTL_DECL(_vm); 807 SYSCTL_DECL(_vm_stats); 808 SYSCTL_DECL(_vm_stats_misc); 809 SYSCTL_DECL(_vfs); 810 SYSCTL_DECL(_net); 811 SYSCTL_DECL(_debug); 812 SYSCTL_DECL(_debug_sizeof); 813 SYSCTL_DECL(_dev); 814 SYSCTL_DECL(_hw); 815 SYSCTL_DECL(_hw_bus); 816 SYSCTL_DECL(_hw_bus_devices); 817 SYSCTL_DECL(_hw_bus_info); 818 SYSCTL_DECL(_machdep); 819 SYSCTL_DECL(_user); 820 SYSCTL_DECL(_compat); 821 SYSCTL_DECL(_regression); 822 SYSCTL_DECL(_security); 823 SYSCTL_DECL(_security_bsd); 824 825 extern char machine[]; 826 extern char osrelease[]; 827 extern char ostype[]; 828 extern char kern_ident[]; 829 830 /* Dynamic oid handling */ 831 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 832 struct sysctl_oid_list *parent, int nbr, const char *name, 833 int kind, void *arg1, intptr_t arg2, 834 int (*handler) (SYSCTL_HANDLER_ARGS), 835 const char *fmt, const char *descr); 836 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 837 int recurse); 838 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 839 int sysctl_move_oid(struct sysctl_oid *oidp, 840 struct sysctl_oid_list *parent); 841 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 842 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 843 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 844 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 845 struct sysctl_oid *oidp); 846 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 847 struct sysctl_oid *oidp); 848 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 849 struct sysctl_oid *oidp); 850 851 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 852 size_t *oldlenp, void *new, size_t newlen, 853 size_t *retval, int flags); 854 int kernel_sysctlbyname(struct thread *td, char *name, 855 void *old, size_t *oldlenp, void *new, size_t newlen, 856 size_t *retval, int flags); 857 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 858 size_t *oldlenp, int inkernel, void *new, size_t newlen, 859 size_t *retval, int flags); 860 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 861 int *nindx, struct sysctl_req *req); 862 void sysctl_lock(void); 863 void sysctl_unlock(void); 864 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 865 866 struct sbuf; 867 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 868 struct sysctl_req *); 869 #else /* !_KERNEL */ 870 #include <sys/cdefs.h> 871 872 __BEGIN_DECLS 873 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 874 int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 875 int sysctlnametomib(const char *, int *, size_t *); 876 __END_DECLS 877 #endif /* _KERNEL */ 878 879 #endif /* !_SYS_SYSCTL_H_ */
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