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