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