1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Mike Karels at Berkeley Software Design, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 35 * $FreeBSD$ 36 */ 37 38 #ifndef _SYS_SYSCTL_H_ 39 #define _SYS_SYSCTL_H_ 40 41 #include <sys/queue.h> 42 43 struct thread; 44 /* 45 * Definitions for sysctl call. The sysctl call uses a hierarchical name 46 * for objects that can be examined or modified. The name is expressed as 47 * a sequence of integers. Like a file path name, the meaning of each 48 * component depends on its place in the hierarchy. The top-level and kern 49 * identifiers are defined here, and other identifiers are defined in the 50 * respective subsystem header files. 51 */ 52 53 #define CTL_MAXNAME 24 /* largest number of components supported */ 54 55 /* 56 * Each subsystem defined by sysctl defines a list of variables 57 * for that subsystem. Each name is either a node with further 58 * levels defined below it, or it is a leaf of some particular 59 * type given below. Each sysctl level defines a set of name/type 60 * pairs to be used by sysctl(8) in manipulating the subsystem. 61 */ 62 struct ctlname { 63 char *ctl_name; /* subsystem name */ 64 int ctl_type; /* type of name */ 65 }; 66 67 #define CTLTYPE 0xf /* mask for the type */ 68 #define CTLTYPE_NODE 1 /* name is a node */ 69 #define CTLTYPE_INT 2 /* name describes an integer */ 70 #define CTLTYPE_STRING 3 /* name describes a string */ 71 #define CTLTYPE_S64 4 /* name describes a signed 64-bit number */ 72 #define CTLTYPE_OPAQUE 5 /* name describes a structure */ 73 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 74 #define CTLTYPE_UINT 6 /* name describes an unsigned integer */ 75 #define CTLTYPE_LONG 7 /* name describes a long */ 76 #define CTLTYPE_ULONG 8 /* name describes an unsigned long */ 77 #define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */ 78 #define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */ 79 #define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */ 80 #define CTLTYPE_S8 0xc /* name describes a signed 8-bit number */ 81 #define CTLTYPE_S16 0xd /* name describes a signed 16-bit number */ 82 #define CTLTYPE_S32 0xe /* name describes a signed 32-bit number */ 83 #define CTLTYPE_U32 0xf /* name describes an unsigned 32-bit number */ 84 85 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 86 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 87 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 88 #define CTLFLAG_DORMANT 0x20000000 /* This sysctl is not active yet */ 89 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 90 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 91 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 92 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 93 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 94 #define CTLMASK_SECURE 0x00F00000 /* Secure level */ 95 #define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */ 96 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 97 #define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN) 98 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */ 99 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 100 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */ 101 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */ 102 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */ 103 #define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */ 104 #define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */ 105 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR) 106 107 /* 108 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 109 * 110 * Secure when the securelevel is raised to at least N. 111 */ 112 #define CTLSHIFT_SECURE 20 113 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 114 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 115 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 116 117 /* 118 * USE THIS instead of a hardwired number from the categories below 119 * to get dynamically assigned sysctl entries using the linker-set 120 * technology. This is the way nearly all new sysctl variables should 121 * be implemented. 122 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 123 */ 124 #define OID_AUTO (-1) 125 126 /* 127 * The starting number for dynamically-assigned entries. WARNING! 128 * ALL static sysctl entries should have numbers LESS than this! 129 */ 130 #define CTL_AUTO_START 0x100 131 132 #ifdef _KERNEL 133 #include <sys/linker_set.h> 134 135 #ifdef KLD_MODULE 136 /* XXX allow overspecification of type in external kernel modules */ 137 #define SYSCTL_CT_ASSERT_MASK CTLTYPE 138 #else 139 #define SYSCTL_CT_ASSERT_MASK 0 140 #endif 141 142 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 143 intmax_t arg2, struct sysctl_req *req 144 145 /* definitions for sysctl_req 'lock' member */ 146 #define REQ_UNWIRED 1 147 #define REQ_WIRED 2 148 149 /* definitions for sysctl_req 'flags' member */ 150 #if defined(__aarch64__) || defined(__amd64__) || defined(__powerpc64__) ||\ 151 (defined(__mips__) && defined(__mips_n64)) 152 #define SCTL_MASK32 1 /* 32 bit emulation */ 153 #endif 154 155 /* 156 * This describes the access space for a sysctl request. This is needed 157 * so that we can use the interface from the kernel or from user-space. 158 */ 159 struct sysctl_req { 160 struct thread *td; /* used for access checking */ 161 int lock; /* wiring state */ 162 void *oldptr; 163 size_t oldlen; 164 size_t oldidx; 165 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 166 void *newptr; 167 size_t newlen; 168 size_t newidx; 169 int (*newfunc)(struct sysctl_req *, void *, size_t); 170 size_t validlen; 171 int flags; 172 }; 173 174 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 175 176 /* 177 * This describes one "oid" in the MIB tree. Potentially more nodes can 178 * be hidden behind it, expanded by the handler. 179 */ 180 struct sysctl_oid { 181 struct sysctl_oid_list oid_children; 182 struct sysctl_oid_list *oid_parent; 183 SLIST_ENTRY(sysctl_oid) oid_link; 184 int oid_number; 185 u_int oid_kind; 186 void *oid_arg1; 187 intmax_t oid_arg2; 188 const char *oid_name; 189 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 190 const char *oid_fmt; 191 int oid_refcnt; 192 u_int oid_running; 193 const char *oid_descr; 194 const char *oid_label; 195 }; 196 197 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 198 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 199 #define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1) 200 201 int sysctl_handle_bool(SYSCTL_HANDLER_ARGS); 202 int sysctl_handle_8(SYSCTL_HANDLER_ARGS); 203 int sysctl_handle_16(SYSCTL_HANDLER_ARGS); 204 int sysctl_handle_32(SYSCTL_HANDLER_ARGS); 205 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 206 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 207 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 208 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 209 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 210 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 211 int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS); 212 int sysctl_handle_counter_u64_array(SYSCTL_HANDLER_ARGS); 213 214 int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS); 215 int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS); 216 217 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 218 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 219 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 220 221 /* 222 * These functions are used to add/remove an oid from the mib. 223 */ 224 void sysctl_register_oid(struct sysctl_oid *oidp); 225 void sysctl_register_disabled_oid(struct sysctl_oid *oidp); 226 void sysctl_enable_oid(struct sysctl_oid *oidp); 227 void sysctl_unregister_oid(struct sysctl_oid *oidp); 228 229 /* Declare a static oid to allow child oids to be added to it. */ 230 #define SYSCTL_DECL(name) \ 231 extern struct sysctl_oid sysctl__##name 232 233 /* Hide these in macros. */ 234 #define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children) 235 #define SYSCTL_PARENT(oid_ptr) \ 236 (((oid_ptr)->oid_parent != &sysctl__children) ? \ 237 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \ 238 oid_children) : (struct sysctl_oid *)NULL) 239 #define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children) 240 241 /* === Structs and macros related to context handling. === */ 242 243 /* All dynamically created sysctls can be tracked in a context list. */ 244 struct sysctl_ctx_entry { 245 struct sysctl_oid *entry; 246 TAILQ_ENTRY(sysctl_ctx_entry) link; 247 }; 248 249 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 250 251 #define SYSCTL_NODE_CHILDREN(parent, name) \ 252 sysctl__##parent##_##name.oid_children 253 254 #ifndef NO_SYSCTL_DESCR 255 #define __DESCR(d) d 256 #else 257 #define __DESCR(d) "" 258 #endif 259 260 /* This macro is only for internal use */ 261 #define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr, label) \ 262 struct sysctl_oid id = { \ 263 .oid_parent = (parent_child_head), \ 264 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \ 265 .oid_number = (nbr), \ 266 .oid_kind = (kind), \ 267 .oid_arg1 = (a1), \ 268 .oid_arg2 = (a2), \ 269 .oid_name = (name), \ 270 .oid_handler = (handler), \ 271 .oid_fmt = (fmt), \ 272 .oid_descr = __DESCR(descr), \ 273 .oid_label = (label), \ 274 }; \ 275 DATA_SET(sysctl_set, id) 276 277 /* This constructs a static "raw" MIB oid. */ 278 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 279 SYSCTL_OID_WITH_LABEL(parent, nbr, name, kind, a1, a2, \ 280 handler, fmt, descr, NULL) 281 282 #define SYSCTL_OID_WITH_LABEL(parent, nbr, name, kind, a1, a2, handler, fmt, descr, label) \ 283 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 284 SYSCTL_CHILDREN(&sysctl__##parent), \ 285 nbr, #name, kind, a1, a2, handler, fmt, descr, label) 286 287 /* This constructs a global "raw" MIB oid. */ 288 #define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr, label) \ 289 SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 290 SYSCTL_CHILDREN(&sysctl__##parent), \ 291 nbr, #name, kind, a1, a2, handler, fmt, descr, label) 292 293 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 294 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr), NULL) 295 296 /* This constructs a root node from which other nodes can hang. */ 297 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \ 298 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \ 299 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \ 300 handler, "N", descr, NULL); \ 301 CTASSERT(((access) & CTLTYPE) == 0 || \ 302 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 303 304 /* This constructs a node from which other oids can hang. */ 305 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 306 SYSCTL_NODE_WITH_LABEL(parent, nbr, name, access, handler, descr, NULL) 307 308 #define SYSCTL_NODE_WITH_LABEL(parent, nbr, name, access, handler, descr, label) \ 309 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \ 310 NULL, 0, handler, "N", descr, label); \ 311 CTASSERT(((access) & CTLTYPE) == 0 || \ 312 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 313 314 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 315 SYSCTL_ADD_NODE_WITH_LABEL(ctx, parent, nbr, name, access, \ 316 handler, descr, NULL) 317 318 #define SYSCTL_ADD_NODE_WITH_LABEL(ctx, parent, nbr, name, access, handler, descr, label) \ 319 ({ \ 320 CTASSERT(((access) & CTLTYPE) == 0 || \ 321 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 322 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 323 NULL, 0, handler, "N", __DESCR(descr), label); \ 324 }) 325 326 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \ 327 ({ \ 328 CTASSERT(((access) & CTLTYPE) == 0 || \ 329 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 330 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \ 331 CTLTYPE_NODE|(access), \ 332 NULL, 0, handler, "N", __DESCR(descr), NULL); \ 333 }) 334 335 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 336 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 337 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 338 arg, len, sysctl_handle_string, "A", descr); \ 339 CTASSERT(((access) & CTLTYPE) == 0 || \ 340 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING) 341 342 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 343 ({ \ 344 char *__arg = (arg); \ 345 CTASSERT(((access) & CTLTYPE) == 0 || \ 346 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \ 347 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 348 __arg, len, sysctl_handle_string, "A", __DESCR(descr), \ 349 NULL); \ 350 }) 351 352 /* Oid for a bool. If ptr is NULL, val is returned. */ 353 #define SYSCTL_NULL_BOOL_PTR ((bool *)NULL) 354 #define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \ 355 SYSCTL_OID(parent, nbr, name, \ 356 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 357 ptr, val, sysctl_handle_bool, "CU", descr); \ 358 CTASSERT(((access) & CTLTYPE) == 0 && \ 359 sizeof(bool) == sizeof(*(ptr))) 360 361 #define SYSCTL_ADD_BOOL(ctx, parent, nbr, name, access, ptr, val, descr) \ 362 ({ \ 363 bool *__ptr = (ptr); \ 364 CTASSERT(((access) & CTLTYPE) == 0); \ 365 sysctl_add_oid(ctx, parent, nbr, name, \ 366 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 367 __ptr, val, sysctl_handle_bool, "CU", __DESCR(descr), \ 368 NULL); \ 369 }) 370 371 /* Oid for a signed 8-bit int. If ptr is NULL, val is returned. */ 372 #define SYSCTL_NULL_S8_PTR ((int8_t *)NULL) 373 #define SYSCTL_S8(parent, nbr, name, access, ptr, val, descr) \ 374 SYSCTL_OID(parent, nbr, name, \ 375 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \ 376 ptr, val, sysctl_handle_8, "C", descr); \ 377 CTASSERT((((access) & CTLTYPE) == 0 || \ 378 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8) && \ 379 sizeof(int8_t) == sizeof(*(ptr))) 380 381 #define SYSCTL_ADD_S8(ctx, parent, nbr, name, access, ptr, val, descr) \ 382 ({ \ 383 int8_t *__ptr = (ptr); \ 384 CTASSERT(((access) & CTLTYPE) == 0 || \ 385 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8); \ 386 sysctl_add_oid(ctx, parent, nbr, name, \ 387 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \ 388 __ptr, val, sysctl_handle_8, "C", __DESCR(descr), NULL); \ 389 }) 390 391 /* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */ 392 #define SYSCTL_NULL_U8_PTR ((uint8_t *)NULL) 393 #define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \ 394 SYSCTL_OID(parent, nbr, name, \ 395 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 396 ptr, val, sysctl_handle_8, "CU", descr); \ 397 CTASSERT((((access) & CTLTYPE) == 0 || \ 398 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \ 399 sizeof(uint8_t) == sizeof(*(ptr))) 400 401 #define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \ 402 ({ \ 403 uint8_t *__ptr = (ptr); \ 404 CTASSERT(((access) & CTLTYPE) == 0 || \ 405 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \ 406 sysctl_add_oid(ctx, parent, nbr, name, \ 407 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 408 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr), NULL); \ 409 }) 410 411 /* Oid for a signed 16-bit int. If ptr is NULL, val is returned. */ 412 #define SYSCTL_NULL_S16_PTR ((int16_t *)NULL) 413 #define SYSCTL_S16(parent, nbr, name, access, ptr, val, descr) \ 414 SYSCTL_OID(parent, nbr, name, \ 415 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \ 416 ptr, val, sysctl_handle_16, "S", descr); \ 417 CTASSERT((((access) & CTLTYPE) == 0 || \ 418 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16) && \ 419 sizeof(int16_t) == sizeof(*(ptr))) 420 421 #define SYSCTL_ADD_S16(ctx, parent, nbr, name, access, ptr, val, descr) \ 422 ({ \ 423 int16_t *__ptr = (ptr); \ 424 CTASSERT(((access) & CTLTYPE) == 0 || \ 425 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16); \ 426 sysctl_add_oid(ctx, parent, nbr, name, \ 427 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \ 428 __ptr, val, sysctl_handle_16, "S", __DESCR(descr), NULL); \ 429 }) 430 431 /* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */ 432 #define SYSCTL_NULL_U16_PTR ((uint16_t *)NULL) 433 #define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \ 434 SYSCTL_OID(parent, nbr, name, \ 435 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 436 ptr, val, sysctl_handle_16, "SU", descr); \ 437 CTASSERT((((access) & CTLTYPE) == 0 || \ 438 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \ 439 sizeof(uint16_t) == sizeof(*(ptr))) 440 441 #define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \ 442 ({ \ 443 uint16_t *__ptr = (ptr); \ 444 CTASSERT(((access) & CTLTYPE) == 0 || \ 445 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \ 446 sysctl_add_oid(ctx, parent, nbr, name, \ 447 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 448 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr), NULL); \ 449 }) 450 451 /* Oid for a signed 32-bit int. If ptr is NULL, val is returned. */ 452 #define SYSCTL_NULL_S32_PTR ((int32_t *)NULL) 453 #define SYSCTL_S32(parent, nbr, name, access, ptr, val, descr) \ 454 SYSCTL_OID(parent, nbr, name, \ 455 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \ 456 ptr, val, sysctl_handle_32, "I", descr); \ 457 CTASSERT((((access) & CTLTYPE) == 0 || \ 458 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32) && \ 459 sizeof(int32_t) == sizeof(*(ptr))) 460 461 #define SYSCTL_ADD_S32(ctx, parent, nbr, name, access, ptr, val, descr) \ 462 ({ \ 463 int32_t *__ptr = (ptr); \ 464 CTASSERT(((access) & CTLTYPE) == 0 || \ 465 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32); \ 466 sysctl_add_oid(ctx, parent, nbr, name, \ 467 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \ 468 __ptr, val, sysctl_handle_32, "I", __DESCR(descr), NULL); \ 469 }) 470 471 /* Oid for an unsigned 32-bit int. If ptr is NULL, val is returned. */ 472 #define SYSCTL_NULL_U32_PTR ((uint32_t *)NULL) 473 #define SYSCTL_U32(parent, nbr, name, access, ptr, val, descr) \ 474 SYSCTL_OID(parent, nbr, name, \ 475 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \ 476 ptr, val, sysctl_handle_32, "IU", descr); \ 477 CTASSERT((((access) & CTLTYPE) == 0 || \ 478 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32) && \ 479 sizeof(uint32_t) == sizeof(*(ptr))) 480 481 #define SYSCTL_ADD_U32(ctx, parent, nbr, name, access, ptr, val, descr) \ 482 ({ \ 483 uint32_t *__ptr = (ptr); \ 484 CTASSERT(((access) & CTLTYPE) == 0 || \ 485 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32); \ 486 sysctl_add_oid(ctx, parent, nbr, name, \ 487 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \ 488 __ptr, val, sysctl_handle_32, "IU", __DESCR(descr), NULL); \ 489 }) 490 491 /* Oid for a signed 64-bit int. If ptr is NULL, val is returned. */ 492 #define SYSCTL_NULL_S64_PTR ((int64_t *)NULL) 493 #define SYSCTL_S64(parent, nbr, name, access, ptr, val, descr) \ 494 SYSCTL_OID(parent, nbr, name, \ 495 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 496 ptr, val, sysctl_handle_64, "Q", descr); \ 497 CTASSERT((((access) & CTLTYPE) == 0 || \ 498 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 499 sizeof(int64_t) == sizeof(*(ptr))) 500 501 #define SYSCTL_ADD_S64(ctx, parent, nbr, name, access, ptr, val, descr) \ 502 ({ \ 503 int64_t *__ptr = (ptr); \ 504 CTASSERT(((access) & CTLTYPE) == 0 || \ 505 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 506 sysctl_add_oid(ctx, parent, nbr, name, \ 507 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 508 __ptr, val, sysctl_handle_64, "Q", __DESCR(descr), NULL); \ 509 }) 510 511 /* Oid for an unsigned 64-bit int. If ptr is NULL, val is returned. */ 512 #define SYSCTL_NULL_U64_PTR ((uint64_t *)NULL) 513 #define SYSCTL_U64(parent, nbr, name, access, ptr, val, descr) \ 514 SYSCTL_OID(parent, nbr, name, \ 515 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 516 ptr, val, sysctl_handle_64, "QU", descr); \ 517 CTASSERT((((access) & CTLTYPE) == 0 || \ 518 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 519 sizeof(uint64_t) == sizeof(*(ptr))) 520 521 #define SYSCTL_ADD_U64(ctx, parent, nbr, name, access, ptr, val, descr) \ 522 ({ \ 523 uint64_t *__ptr = (ptr); \ 524 CTASSERT(((access) & CTLTYPE) == 0 || \ 525 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 526 sysctl_add_oid(ctx, parent, nbr, name, \ 527 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 528 __ptr, val, sysctl_handle_64, "QU", __DESCR(descr), NULL); \ 529 }) 530 531 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */ 532 #define SYSCTL_NULL_INT_PTR ((int *)NULL) 533 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 534 SYSCTL_INT_WITH_LABEL(parent, nbr, name, access, ptr, val, descr, NULL) 535 536 #define SYSCTL_INT_WITH_LABEL(parent, nbr, name, access, ptr, val, descr, label) \ 537 SYSCTL_OID_WITH_LABEL(parent, nbr, name, \ 538 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 539 ptr, val, sysctl_handle_int, "I", descr, label); \ 540 CTASSERT((((access) & CTLTYPE) == 0 || \ 541 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \ 542 sizeof(int) == sizeof(*(ptr))) 543 544 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 545 ({ \ 546 int *__ptr = (ptr); \ 547 CTASSERT(((access) & CTLTYPE) == 0 || \ 548 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 549 sysctl_add_oid(ctx, parent, nbr, name, \ 550 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 551 __ptr, val, sysctl_handle_int, "I", __DESCR(descr), NULL); \ 552 }) 553 554 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 555 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL) 556 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 557 SYSCTL_OID(parent, nbr, name, \ 558 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 559 ptr, val, sysctl_handle_int, "IU", descr); \ 560 CTASSERT((((access) & CTLTYPE) == 0 || \ 561 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \ 562 sizeof(unsigned) == sizeof(*(ptr))) 563 564 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 565 ({ \ 566 unsigned *__ptr = (ptr); \ 567 CTASSERT(((access) & CTLTYPE) == 0 || \ 568 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \ 569 sysctl_add_oid(ctx, parent, nbr, name, \ 570 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 571 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr), NULL); \ 572 }) 573 574 /* Oid for a long. The pointer must be non NULL. */ 575 #define SYSCTL_NULL_LONG_PTR ((long *)NULL) 576 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 577 SYSCTL_OID(parent, nbr, name, \ 578 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 579 ptr, val, sysctl_handle_long, "L", descr); \ 580 CTASSERT((((access) & CTLTYPE) == 0 || \ 581 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \ 582 sizeof(long) == sizeof(*(ptr))) 583 584 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 585 ({ \ 586 long *__ptr = (ptr); \ 587 CTASSERT(((access) & CTLTYPE) == 0 || \ 588 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \ 589 sysctl_add_oid(ctx, parent, nbr, name, \ 590 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 591 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr), NULL); \ 592 }) 593 594 /* Oid for an unsigned long. The pointer must be non NULL. */ 595 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL) 596 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 597 SYSCTL_OID(parent, nbr, name, \ 598 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 599 ptr, val, sysctl_handle_long, "LU", descr); \ 600 CTASSERT((((access) & CTLTYPE) == 0 || \ 601 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \ 602 sizeof(unsigned long) == sizeof(*(ptr))) 603 604 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 605 ({ \ 606 unsigned long *__ptr = (ptr); \ 607 CTASSERT(((access) & CTLTYPE) == 0 || \ 608 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \ 609 sysctl_add_oid(ctx, parent, nbr, name, \ 610 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 611 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr), NULL); \ 612 }) 613 614 /* Oid for a quad. The pointer must be non NULL. */ 615 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL) 616 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 617 SYSCTL_OID(parent, nbr, name, \ 618 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 619 ptr, val, sysctl_handle_64, "Q", descr); \ 620 CTASSERT((((access) & CTLTYPE) == 0 || \ 621 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 622 sizeof(int64_t) == sizeof(*(ptr))) 623 624 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 625 ({ \ 626 int64_t *__ptr = (ptr); \ 627 CTASSERT(((access) & CTLTYPE) == 0 || \ 628 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 629 sysctl_add_oid(ctx, parent, nbr, name, \ 630 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 631 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr), NULL); \ 632 }) 633 634 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL) 635 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 636 SYSCTL_OID(parent, nbr, name, \ 637 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 638 ptr, val, sysctl_handle_64, "QU", descr); \ 639 CTASSERT((((access) & CTLTYPE) == 0 || \ 640 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 641 sizeof(uint64_t) == sizeof(*(ptr))) 642 643 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \ 644 ({ \ 645 uint64_t *__ptr = (ptr); \ 646 CTASSERT(((access) & CTLTYPE) == 0 || \ 647 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 648 sysctl_add_oid(ctx, parent, nbr, name, \ 649 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 650 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr), NULL); \ 651 }) 652 653 /* Oid for a CPU dependent variable */ 654 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \ 655 ({ \ 656 struct sysctl_oid *__ret; \ 657 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \ 658 sizeof(unsigned) == sizeof(*(ptr))) && \ 659 ((access) & CTLTYPE) == 0); \ 660 if (sizeof(uint64_t) == sizeof(*(ptr))) { \ 661 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 662 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 663 (ptr), 0, sysctl_handle_64, "QU", \ 664 __DESCR(descr), NULL); \ 665 } else { \ 666 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 667 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 668 (ptr), 0, sysctl_handle_int, "IU", \ 669 __DESCR(descr), NULL); \ 670 } \ 671 __ret; \ 672 }) 673 674 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */ 675 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \ 676 SYSCTL_OID(parent, nbr, name, \ 677 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 678 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \ 679 CTASSERT((((access) & CTLTYPE) == 0 || \ 680 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 681 sizeof(counter_u64_t) == sizeof(*(ptr)) && \ 682 sizeof(uint64_t) == sizeof(**(ptr))) 683 684 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \ 685 ({ \ 686 counter_u64_t *__ptr = (ptr); \ 687 CTASSERT(((access) & CTLTYPE) == 0 || \ 688 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 689 sysctl_add_oid(ctx, parent, nbr, name, \ 690 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 691 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr), \ 692 NULL); \ 693 }) 694 695 /* Oid for an array of counter(9)s. The pointer and length must be non zero. */ 696 #define SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \ 697 SYSCTL_OID(parent, nbr, name, \ 698 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \ 699 (ptr), (len), sysctl_handle_counter_u64_array, "S", descr); \ 700 CTASSERT((((access) & CTLTYPE) == 0 || \ 701 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) && \ 702 sizeof(counter_u64_t) == sizeof(*(ptr)) && \ 703 sizeof(uint64_t) == sizeof(**(ptr))) 704 705 #define SYSCTL_ADD_COUNTER_U64_ARRAY(ctx, parent, nbr, name, access, \ 706 ptr, len, descr) \ 707 ({ \ 708 counter_u64_t *__ptr = (ptr); \ 709 CTASSERT(((access) & CTLTYPE) == 0 || \ 710 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 711 sysctl_add_oid(ctx, parent, nbr, name, \ 712 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \ 713 __ptr, len, sysctl_handle_counter_u64_array, "S", \ 714 __DESCR(descr), NULL); \ 715 }) 716 717 /* Oid for an opaque object. Specified by a pointer and a length. */ 718 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 719 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 720 ptr, len, sysctl_handle_opaque, fmt, descr); \ 721 CTASSERT(((access) & CTLTYPE) == 0 || \ 722 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 723 724 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 725 ({ \ 726 CTASSERT(((access) & CTLTYPE) == 0 || \ 727 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 728 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 729 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr), NULL); \ 730 }) 731 732 /* Oid for a struct. Specified by a pointer and a type. */ 733 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 734 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 735 ptr, sizeof(struct type), sysctl_handle_opaque, \ 736 "S," #type, descr); \ 737 CTASSERT(((access) & CTLTYPE) == 0 || \ 738 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 739 740 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 741 ({ \ 742 CTASSERT(((access) & CTLTYPE) == 0 || \ 743 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 744 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 745 (ptr), sizeof(struct type), \ 746 sysctl_handle_opaque, "S," #type, __DESCR(descr), NULL); \ 747 }) 748 749 /* Oid for a procedure. Specified by a pointer and an arg. */ 750 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 751 SYSCTL_OID(parent, nbr, name, (access), \ 752 ptr, arg, handler, fmt, descr); \ 753 CTASSERT(((access) & CTLTYPE) != 0) 754 755 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 756 ({ \ 757 CTASSERT(((access) & CTLTYPE) != 0); \ 758 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 759 (ptr), (arg), (handler), (fmt), __DESCR(descr), NULL); \ 760 }) 761 762 /* Oid to handle limits on uma(9) zone specified by pointer. */ 763 #define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \ 764 SYSCTL_OID(parent, nbr, name, \ 765 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 766 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \ 767 CTASSERT(((access) & CTLTYPE) == 0 || \ 768 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 769 770 #define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \ 771 ({ \ 772 uma_zone_t __ptr = (ptr); \ 773 CTASSERT(((access) & CTLTYPE) == 0 || \ 774 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 775 sysctl_add_oid(ctx, parent, nbr, name, \ 776 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 777 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr), \ 778 NULL); \ 779 }) 780 781 /* Oid to obtain current use of uma(9) zone specified by pointer. */ 782 #define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \ 783 SYSCTL_OID(parent, nbr, name, \ 784 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 785 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \ 786 CTASSERT(((access) & CTLTYPE) == 0 || \ 787 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 788 789 #define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \ 790 ({ \ 791 uma_zone_t __ptr = (ptr); \ 792 CTASSERT(((access) & CTLTYPE) == 0 || \ 793 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 794 sysctl_add_oid(ctx, parent, nbr, name, \ 795 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 796 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr), \ 797 NULL); \ 798 }) 799 800 /* 801 * A macro to generate a read-only sysctl to indicate the presence of optional 802 * kernel features. 803 */ 804 #define FEATURE(name, desc) \ 805 SYSCTL_INT_WITH_LABEL(_kern_features, OID_AUTO, name, \ 806 CTLFLAG_RD | CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, desc, "feature") 807 808 #endif /* _KERNEL */ 809 810 /* 811 * Top-level identifiers 812 */ 813 #define CTL_UNSPEC 0 /* unused */ 814 #define CTL_KERN 1 /* "high kernel": proc, limits */ 815 #define CTL_VM 2 /* virtual memory */ 816 #define CTL_VFS 3 /* filesystem, mount type is next */ 817 #define CTL_NET 4 /* network, see socket.h */ 818 #define CTL_DEBUG 5 /* debugging parameters */ 819 #define CTL_HW 6 /* generic cpu/io */ 820 #define CTL_MACHDEP 7 /* machine dependent */ 821 #define CTL_USER 8 /* user-level */ 822 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 823 824 /* 825 * CTL_KERN identifiers 826 */ 827 #define KERN_OSTYPE 1 /* string: system version */ 828 #define KERN_OSRELEASE 2 /* string: system release */ 829 #define KERN_OSREV 3 /* int: system revision */ 830 #define KERN_VERSION 4 /* string: compile time info */ 831 #define KERN_MAXVNODES 5 /* int: max vnodes */ 832 #define KERN_MAXPROC 6 /* int: max processes */ 833 #define KERN_MAXFILES 7 /* int: max open files */ 834 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 835 #define KERN_SECURELVL 9 /* int: system security level */ 836 #define KERN_HOSTNAME 10 /* string: hostname */ 837 #define KERN_HOSTID 11 /* int: host identifier */ 838 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 839 #define KERN_VNODE 13 /* struct: vnode structures */ 840 #define KERN_PROC 14 /* struct: process entries */ 841 #define KERN_FILE 15 /* struct: file entries */ 842 #define KERN_PROF 16 /* node: kernel profiling info */ 843 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 844 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 845 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 846 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 847 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 848 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 849 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 850 #define KERN_OSRELDATE 24 /* int: kernel release date */ 851 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 852 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 853 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 854 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 855 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 856 #define KERN_IPC 30 /* node: anything related to IPC */ 857 #define KERN_DUMMY 31 /* unused */ 858 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 859 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 860 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 861 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 862 #define KERN_HOSTUUID 36 /* string: host UUID identifier */ 863 #define KERN_ARND 37 /* int: from arc4rand() */ 864 #define KERN_MAXPHYS 38 /* int: MAXPHYS value */ 865 /* 866 * KERN_PROC subtypes 867 */ 868 #define KERN_PROC_ALL 0 /* everything */ 869 #define KERN_PROC_PID 1 /* by process id */ 870 #define KERN_PROC_PGRP 2 /* by process group id */ 871 #define KERN_PROC_SESSION 3 /* by session of pid */ 872 #define KERN_PROC_TTY 4 /* by controlling tty */ 873 #define KERN_PROC_UID 5 /* by effective uid */ 874 #define KERN_PROC_RUID 6 /* by real uid */ 875 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 876 #define KERN_PROC_PROC 8 /* only return procs */ 877 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 878 #define KERN_PROC_RGID 10 /* by real group id */ 879 #define KERN_PROC_GID 11 /* by effective group id */ 880 #define KERN_PROC_PATHNAME 12 /* path to executable */ 881 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 882 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 883 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 884 #define KERN_PROC_INC_THREAD 0x10 /* 885 * modifier for pid, pgrp, tty, 886 * uid, ruid, gid, rgid and proc 887 * This effectively uses 16-31 888 */ 889 #define KERN_PROC_VMMAP 32 /* VM map entries for process */ 890 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 891 #define KERN_PROC_GROUPS 34 /* process groups */ 892 #define KERN_PROC_ENV 35 /* get environment */ 893 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */ 894 #define KERN_PROC_RLIMIT 37 /* process resource limits */ 895 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ 896 #define KERN_PROC_UMASK 39 /* process umask */ 897 #define KERN_PROC_OSREL 40 /* osreldate for process binary */ 898 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */ 899 #define KERN_PROC_CWD 42 /* process current working directory */ 900 #define KERN_PROC_NFDS 43 /* number of open file descriptors */ 901 902 /* 903 * KERN_IPC identifiers 904 */ 905 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 906 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 907 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 908 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 909 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 910 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 911 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 912 913 /* 914 * CTL_HW identifiers 915 */ 916 #define HW_MACHINE 1 /* string: machine class */ 917 #define HW_MODEL 2 /* string: specific machine model */ 918 #define HW_NCPU 3 /* int: number of cpus */ 919 #define HW_BYTEORDER 4 /* int: machine byte order */ 920 #define HW_PHYSMEM 5 /* int: total memory */ 921 #define HW_USERMEM 6 /* int: non-kernel memory */ 922 #define HW_PAGESIZE 7 /* int: software page size */ 923 #define HW_DISKNAMES 8 /* strings: disk drive names */ 924 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 925 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 926 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 927 #define HW_REALMEM 12 /* int: 'real' memory */ 928 929 /* 930 * CTL_USER definitions 931 */ 932 #define USER_CS_PATH 1 /* string: _CS_PATH */ 933 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 934 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 935 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 936 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 937 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 938 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 939 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 940 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 941 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 942 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 943 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 944 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 945 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 946 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 947 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 948 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 949 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 950 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 951 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 952 953 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 954 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 955 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 956 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 957 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 958 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 959 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 960 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 961 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 962 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 963 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 964 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 965 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 966 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 967 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 968 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 969 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 970 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 971 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 972 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 973 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 974 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 975 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 976 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 977 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 978 979 #define CTL_P1003_1B_MAXID 26 980 981 #ifdef _KERNEL 982 983 /* 984 * Declare some common oids. 985 */ 986 extern struct sysctl_oid_list sysctl__children; 987 SYSCTL_DECL(_kern); 988 SYSCTL_DECL(_kern_features); 989 SYSCTL_DECL(_kern_ipc); 990 SYSCTL_DECL(_kern_proc); 991 SYSCTL_DECL(_kern_sched); 992 SYSCTL_DECL(_kern_sched_stats); 993 SYSCTL_DECL(_sysctl); 994 SYSCTL_DECL(_vm); 995 SYSCTL_DECL(_vm_stats); 996 SYSCTL_DECL(_vm_stats_misc); 997 SYSCTL_DECL(_vfs); 998 SYSCTL_DECL(_net); 999 SYSCTL_DECL(_debug); 1000 SYSCTL_DECL(_debug_sizeof); 1001 SYSCTL_DECL(_dev); 1002 SYSCTL_DECL(_hw); 1003 SYSCTL_DECL(_hw_bus); 1004 SYSCTL_DECL(_hw_bus_devices); 1005 SYSCTL_DECL(_hw_bus_info); 1006 SYSCTL_DECL(_machdep); 1007 SYSCTL_DECL(_user); 1008 SYSCTL_DECL(_compat); 1009 SYSCTL_DECL(_regression); 1010 SYSCTL_DECL(_security); 1011 SYSCTL_DECL(_security_bsd); 1012 #ifdef EXT_RESOURCES 1013 SYSCTL_DECL(_clock); 1014 #endif 1015 1016 extern char machine[]; 1017 extern char osrelease[]; 1018 extern char ostype[]; 1019 extern char kern_ident[]; 1020 1021 /* Dynamic oid handling */ 1022 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 1023 struct sysctl_oid_list *parent, int nbr, const char *name, int kind, 1024 void *arg1, intmax_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS), 1025 const char *fmt, const char *descr, const char *label); 1026 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 1027 int recurse); 1028 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 1029 int sysctl_move_oid(struct sysctl_oid *oidp, 1030 struct sysctl_oid_list *parent); 1031 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 1032 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 1033 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 1034 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 1035 struct sysctl_oid *oidp); 1036 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 1037 struct sysctl_oid *oidp); 1038 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 1039 struct sysctl_oid *oidp); 1040 1041 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 1042 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 1043 int flags); 1044 int kernel_sysctlbyname(struct thread *td, char *name, void *old, 1045 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 1046 int flags); 1047 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 1048 size_t *oldlenp, int inkernel, void *new, size_t newlen, 1049 size_t *retval, int flags); 1050 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 1051 int *nindx, struct sysctl_req *req); 1052 void sysctl_wlock(void); 1053 void sysctl_wunlock(void); 1054 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 1055 1056 struct sbuf; 1057 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 1058 struct sysctl_req *); 1059 #else /* !_KERNEL */ 1060 #include <sys/cdefs.h> 1061 1062 __BEGIN_DECLS 1063 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 1064 int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 1065 int sysctlnametomib(const char *, int *, size_t *); 1066 __END_DECLS 1067 #endif /* _KERNEL */ 1068 1069 #endif /* !_SYS_SYSCTL_H_ */ 1070