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