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