1 /*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Mike Karels at Berkeley Software Design, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 33 * $FreeBSD$ 34 */ 35 36 #ifndef _SYS_SYSCTL_H_ 37 #define _SYS_SYSCTL_H_ 38 39 #include <sys/queue.h> 40 41 struct thread; 42 /* 43 * Definitions for sysctl call. The sysctl call uses a hierarchical name 44 * for objects that can be examined or modified. The name is expressed as 45 * a sequence of integers. Like a file path name, the meaning of each 46 * component depends on its place in the hierarchy. The top-level and kern 47 * identifiers are defined here, and other identifiers are defined in the 48 * respective subsystem header files. 49 */ 50 51 #define CTL_MAXNAME 24 /* largest number of components supported */ 52 53 /* 54 * Each subsystem defined by sysctl defines a list of variables 55 * for that subsystem. Each name is either a node with further 56 * levels defined below it, or it is a leaf of some particular 57 * type given below. Each sysctl level defines a set of name/type 58 * pairs to be used by sysctl(8) in manipulating the subsystem. 59 */ 60 struct ctlname { 61 char *ctl_name; /* subsystem name */ 62 int ctl_type; /* type of name */ 63 }; 64 65 #define CTLTYPE 0xf /* mask for the type */ 66 #define CTLTYPE_NODE 1 /* name is a node */ 67 #define CTLTYPE_INT 2 /* name describes an integer */ 68 #define CTLTYPE_STRING 3 /* name describes a string */ 69 #define CTLTYPE_S64 4 /* name describes a signed 64-bit number */ 70 #define CTLTYPE_OPAQUE 5 /* name describes a structure */ 71 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 72 #define CTLTYPE_UINT 6 /* name describes an unsigned integer */ 73 #define CTLTYPE_LONG 7 /* name describes a long */ 74 #define CTLTYPE_ULONG 8 /* name describes an unsigned long */ 75 #define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */ 76 #define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */ 77 #define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */ 78 79 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 80 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 81 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 82 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 83 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 84 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 85 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 86 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 87 #define CTLMASK_SECURE 0x00F00000 /* Secure level */ 88 #define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */ 89 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 90 #define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN) 91 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */ 92 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 93 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */ 94 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */ 95 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */ 96 #define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */ 97 #define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */ 98 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR) 99 100 /* 101 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 102 * 103 * Secure when the securelevel is raised to at least N. 104 */ 105 #define CTLSHIFT_SECURE 20 106 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 107 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 108 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 109 110 /* 111 * USE THIS instead of a hardwired number from the categories below 112 * to get dynamically assigned sysctl entries using the linker-set 113 * technology. This is the way nearly all new sysctl variables should 114 * be implemented. 115 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 116 */ 117 #define OID_AUTO (-1) 118 119 /* 120 * The starting number for dynamically-assigned entries. WARNING! 121 * ALL static sysctl entries should have numbers LESS than this! 122 */ 123 #define CTL_AUTO_START 0x100 124 125 #ifdef _KERNEL 126 #include <sys/linker_set.h> 127 128 #ifdef KLD_MODULE 129 /* XXX allow overspecification of type in external kernel modules */ 130 #define SYSCTL_CT_ASSERT_MASK CTLTYPE 131 #else 132 #define SYSCTL_CT_ASSERT_MASK 0 133 #endif 134 135 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 136 intptr_t arg2, struct sysctl_req *req 137 138 /* definitions for sysctl_req 'lock' member */ 139 #define REQ_UNWIRED 1 140 #define REQ_WIRED 2 141 142 /* definitions for sysctl_req 'flags' member */ 143 #if defined(__amd64__) || defined(__powerpc64__) ||\ 144 (defined(__mips__) && defined(__mips_n64)) 145 #define SCTL_MASK32 1 /* 32 bit emulation */ 146 #endif 147 148 /* 149 * This describes the access space for a sysctl request. This is needed 150 * so that we can use the interface from the kernel or from user-space. 151 */ 152 struct sysctl_req { 153 struct thread *td; /* used for access checking */ 154 int lock; /* wiring state */ 155 void *oldptr; 156 size_t oldlen; 157 size_t oldidx; 158 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 159 void *newptr; 160 size_t newlen; 161 size_t newidx; 162 int (*newfunc)(struct sysctl_req *, void *, size_t); 163 size_t validlen; 164 int flags; 165 }; 166 167 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 168 169 /* 170 * This describes one "oid" in the MIB tree. Potentially more nodes can 171 * be hidden behind it, expanded by the handler. 172 */ 173 struct sysctl_oid { 174 struct sysctl_oid_list oid_children; 175 struct sysctl_oid_list *oid_parent; 176 SLIST_ENTRY(sysctl_oid) oid_link; 177 int oid_number; 178 u_int oid_kind; 179 void *oid_arg1; 180 intptr_t oid_arg2; 181 const char *oid_name; 182 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 183 const char *oid_fmt; 184 int oid_refcnt; 185 u_int oid_running; 186 const char *oid_descr; 187 }; 188 189 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 190 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 191 #define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1) 192 193 int sysctl_handle_8(SYSCTL_HANDLER_ARGS); 194 int sysctl_handle_16(SYSCTL_HANDLER_ARGS); 195 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 196 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 197 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 198 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 199 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 200 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 201 int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS); 202 203 int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS); 204 int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS); 205 206 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 207 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 208 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 209 210 /* 211 * These functions are used to add/remove an oid from the mib. 212 */ 213 void sysctl_register_oid(struct sysctl_oid *oidp); 214 void sysctl_unregister_oid(struct sysctl_oid *oidp); 215 216 /* Declare a static oid to allow child oids to be added to it. */ 217 #define SYSCTL_DECL(name) \ 218 extern struct sysctl_oid sysctl__##name 219 220 /* Hide these in macros. */ 221 #define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children) 222 #define SYSCTL_PARENT(oid_ptr) \ 223 (((oid_ptr)->oid_parent != &sysctl__children) ? \ 224 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \ 225 oid_children) : (struct sysctl_oid *)NULL) 226 #define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children) 227 228 /* === Structs and macros related to context handling. === */ 229 230 /* All dynamically created sysctls can be tracked in a context list. */ 231 struct sysctl_ctx_entry { 232 struct sysctl_oid *entry; 233 TAILQ_ENTRY(sysctl_ctx_entry) link; 234 }; 235 236 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 237 238 #define SYSCTL_NODE_CHILDREN(parent, name) \ 239 sysctl__##parent##_##name.oid_children 240 241 #ifndef NO_SYSCTL_DESCR 242 #define __DESCR(d) d 243 #else 244 #define __DESCR(d) "" 245 #endif 246 247 /* This macro is only for internal use */ 248 #define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr) \ 249 struct sysctl_oid id = { \ 250 .oid_parent = (parent_child_head), \ 251 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \ 252 .oid_number = (nbr), \ 253 .oid_kind = (kind), \ 254 .oid_arg1 = (a1), \ 255 .oid_arg2 = (a2), \ 256 .oid_name = (name), \ 257 .oid_handler = (handler), \ 258 .oid_fmt = (fmt), \ 259 .oid_descr = __DESCR(descr) \ 260 }; \ 261 DATA_SET(sysctl_set, id) 262 263 /* This constructs a static "raw" MIB oid. */ 264 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 265 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 266 SYSCTL_CHILDREN(&sysctl__##parent), \ 267 nbr, #name, kind, a1, a2, handler, fmt, descr) 268 269 /* This constructs a global "raw" MIB oid. */ 270 #define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 271 SYSCTL_OID_RAW(sysctl__##parent##_##name, \ 272 SYSCTL_CHILDREN(&sysctl__##parent), \ 273 nbr, #name, kind, a1, a2, handler, fmt, descr) 274 275 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 276 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 277 278 /* This constructs a root node from which other nodes can hang. */ 279 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \ 280 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \ 281 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \ 282 handler, "N", descr); \ 283 CTASSERT(((access) & CTLTYPE) == 0 || \ 284 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 285 286 /* This constructs a node from which other oids can hang. */ 287 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 288 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \ 289 NULL, 0, handler, "N", descr); \ 290 CTASSERT(((access) & CTLTYPE) == 0 || \ 291 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE) 292 293 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 294 ({ \ 295 CTASSERT(((access) & CTLTYPE) == 0 || \ 296 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 297 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 298 NULL, 0, handler, "N", __DESCR(descr)); \ 299 }) 300 301 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \ 302 ({ \ 303 CTASSERT(((access) & CTLTYPE) == 0 || \ 304 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \ 305 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \ 306 CTLTYPE_NODE|(access), \ 307 NULL, 0, handler, "N", __DESCR(descr)); \ 308 }) 309 310 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 311 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 312 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 313 arg, len, sysctl_handle_string, "A", descr); \ 314 CTASSERT(((access) & CTLTYPE) == 0 || \ 315 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING) 316 317 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 318 ({ \ 319 char *__arg = (arg); \ 320 CTASSERT(((access) & CTLTYPE) == 0 || \ 321 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \ 322 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 323 __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \ 324 }) 325 326 /* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */ 327 #define SYSCTL_NULL_U8_PTR ((unsigned *)NULL) 328 #define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \ 329 SYSCTL_OID(parent, nbr, name, \ 330 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 331 ptr, val, sysctl_handle_8, "CU", descr); \ 332 CTASSERT((((access) & CTLTYPE) == 0 || \ 333 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \ 334 sizeof(uint8_t) == sizeof(*(ptr))) 335 336 #define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \ 337 ({ \ 338 uint8_t *__ptr = (ptr); \ 339 CTASSERT(((access) & CTLTYPE) == 0 || \ 340 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \ 341 sysctl_add_oid(ctx, parent, nbr, name, \ 342 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \ 343 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr)); \ 344 }) 345 346 /* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */ 347 #define SYSCTL_NULL_U16_PTR ((unsigned *)NULL) 348 #define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \ 349 SYSCTL_OID(parent, nbr, name, \ 350 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 351 ptr, val, sysctl_handle_16, "SU", descr); \ 352 CTASSERT((((access) & CTLTYPE) == 0 || \ 353 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \ 354 sizeof(uint16_t) == sizeof(*(ptr))) 355 356 #define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \ 357 ({ \ 358 uint16_t *__ptr = (ptr); \ 359 CTASSERT(((access) & CTLTYPE) == 0 || \ 360 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \ 361 sysctl_add_oid(ctx, parent, nbr, name, \ 362 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \ 363 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr)); \ 364 }) 365 366 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */ 367 #define SYSCTL_NULL_INT_PTR ((int *)NULL) 368 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 369 SYSCTL_OID(parent, nbr, name, \ 370 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 371 ptr, val, sysctl_handle_int, "I", descr); \ 372 CTASSERT((((access) & CTLTYPE) == 0 || \ 373 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \ 374 sizeof(int) == sizeof(*(ptr))) 375 376 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 377 ({ \ 378 int *__ptr = (ptr); \ 379 CTASSERT(((access) & CTLTYPE) == 0 || \ 380 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 381 sysctl_add_oid(ctx, parent, nbr, name, \ 382 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 383 __ptr, val, sysctl_handle_int, "I", __DESCR(descr)); \ 384 }) 385 386 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 387 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL) 388 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 389 SYSCTL_OID(parent, nbr, name, \ 390 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 391 ptr, val, sysctl_handle_int, "IU", descr); \ 392 CTASSERT((((access) & CTLTYPE) == 0 || \ 393 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \ 394 sizeof(unsigned) == sizeof(*(ptr))) 395 396 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 397 ({ \ 398 unsigned *__ptr = (ptr); \ 399 CTASSERT(((access) & CTLTYPE) == 0 || \ 400 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \ 401 sysctl_add_oid(ctx, parent, nbr, name, \ 402 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 403 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr)); \ 404 }) 405 406 /* Oid for a long. The pointer must be non NULL. */ 407 #define SYSCTL_NULL_LONG_PTR ((long *)NULL) 408 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 409 SYSCTL_OID(parent, nbr, name, \ 410 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 411 ptr, val, sysctl_handle_long, "L", descr); \ 412 CTASSERT((((access) & CTLTYPE) == 0 || \ 413 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \ 414 sizeof(long) == sizeof(*(ptr))) 415 416 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 417 ({ \ 418 long *__ptr = (ptr); \ 419 CTASSERT(((access) & CTLTYPE) == 0 || \ 420 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \ 421 sysctl_add_oid(ctx, parent, nbr, name, \ 422 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 423 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr)); \ 424 }) 425 426 /* Oid for an unsigned long. The pointer must be non NULL. */ 427 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL) 428 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 429 SYSCTL_OID(parent, nbr, name, \ 430 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 431 ptr, val, sysctl_handle_long, "LU", descr); \ 432 CTASSERT((((access) & CTLTYPE) == 0 || \ 433 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \ 434 sizeof(unsigned long) == sizeof(*(ptr))) 435 436 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 437 ({ \ 438 unsigned long *__ptr = (ptr); \ 439 CTASSERT(((access) & CTLTYPE) == 0 || \ 440 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \ 441 sysctl_add_oid(ctx, parent, nbr, name, \ 442 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 443 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)); \ 444 }) 445 446 /* Oid for a quad. The pointer must be non NULL. */ 447 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL) 448 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 449 SYSCTL_OID(parent, nbr, name, \ 450 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 451 ptr, val, sysctl_handle_64, "Q", descr); \ 452 CTASSERT((((access) & CTLTYPE) == 0 || \ 453 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \ 454 sizeof(int64_t) == sizeof(*(ptr))) 455 456 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 457 ({ \ 458 int64_t *__ptr = (ptr); \ 459 CTASSERT(((access) & CTLTYPE) == 0 || \ 460 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \ 461 sysctl_add_oid(ctx, parent, nbr, name, \ 462 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 463 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr)); \ 464 }) 465 466 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL) 467 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 468 SYSCTL_OID(parent, nbr, name, \ 469 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 470 ptr, val, sysctl_handle_64, "QU", descr); \ 471 CTASSERT((((access) & CTLTYPE) == 0 || \ 472 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 473 sizeof(uint64_t) == sizeof(*(ptr))) 474 475 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \ 476 ({ \ 477 uint64_t *__ptr = (ptr); \ 478 CTASSERT(((access) & CTLTYPE) == 0 || \ 479 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \ 480 sysctl_add_oid(ctx, parent, nbr, name, \ 481 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 482 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr)); \ 483 }) 484 485 /* Oid for a CPU dependant variable */ 486 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \ 487 ({ \ 488 struct sysctl_oid *__ret; \ 489 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \ 490 sizeof(unsigned) == sizeof(*(ptr))) && \ 491 ((access) & CTLTYPE) == 0); \ 492 if (sizeof(uint64_t) == sizeof(*(ptr))) { \ 493 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 494 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 495 (ptr), 0, sysctl_handle_64, "QU", \ 496 __DESCR(descr)); \ 497 } else { \ 498 __ret = sysctl_add_oid(ctx, parent, nbr, name, \ 499 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 500 (ptr), 0, sysctl_handle_int, "IU", \ 501 __DESCR(descr)); \ 502 } \ 503 __ret; \ 504 }) 505 506 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */ 507 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \ 508 SYSCTL_OID(parent, nbr, name, \ 509 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 510 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \ 511 CTASSERT((((access) & CTLTYPE) == 0 || \ 512 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \ 513 sizeof(counter_u64_t) == sizeof(*(ptr)) && \ 514 sizeof(uint64_t) == sizeof(**(ptr))) 515 516 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \ 517 ({ \ 518 counter_u64_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, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr)); \ 524 }) 525 526 /* Oid for an opaque object. Specified by a pointer and a length. */ 527 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 528 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 529 ptr, len, sysctl_handle_opaque, fmt, descr); \ 530 CTASSERT(((access) & CTLTYPE) == 0 || \ 531 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 532 533 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 534 ({ \ 535 CTASSERT(((access) & CTLTYPE) == 0 || \ 536 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 537 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 538 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)); \ 539 }) 540 541 /* Oid for a struct. Specified by a pointer and a type. */ 542 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 543 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 544 ptr, sizeof(struct type), sysctl_handle_opaque, \ 545 "S," #type, descr); \ 546 CTASSERT(((access) & CTLTYPE) == 0 || \ 547 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) 548 549 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 550 ({ \ 551 CTASSERT(((access) & CTLTYPE) == 0 || \ 552 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \ 553 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 554 (ptr), sizeof(struct type), \ 555 sysctl_handle_opaque, "S," #type, __DESCR(descr)); \ 556 }) 557 558 /* Oid for a procedure. Specified by a pointer and an arg. */ 559 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 560 SYSCTL_OID(parent, nbr, name, (access), \ 561 ptr, arg, handler, fmt, descr); \ 562 CTASSERT(((access) & CTLTYPE) != 0) 563 564 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 565 ({ \ 566 CTASSERT(((access) & CTLTYPE) != 0); \ 567 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 568 (ptr), (arg), (handler), (fmt), __DESCR(descr)); \ 569 }) 570 571 /* Oid to handle limits on uma(9) zone specified by pointer. */ 572 #define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \ 573 SYSCTL_OID(parent, nbr, name, \ 574 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 575 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \ 576 CTASSERT(((access) & CTLTYPE) == 0 || \ 577 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 578 579 #define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \ 580 ({ \ 581 uma_zone_t __ptr = (ptr); \ 582 CTASSERT(((access) & CTLTYPE) == 0 || \ 583 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 584 sysctl_add_oid(ctx, parent, nbr, name, \ 585 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 586 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr)); \ 587 }) 588 589 /* Oid to obtain current use of uma(9) zone specified by pointer. */ 590 #define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \ 591 SYSCTL_OID(parent, nbr, name, \ 592 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 593 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \ 594 CTASSERT(((access) & CTLTYPE) == 0 || \ 595 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) 596 597 #define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \ 598 ({ \ 599 uma_zone_t __ptr = (ptr); \ 600 CTASSERT(((access) & CTLTYPE) == 0 || \ 601 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \ 602 sysctl_add_oid(ctx, parent, nbr, name, \ 603 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \ 604 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr)); \ 605 }) 606 607 /* 608 * A macro to generate a read-only sysctl to indicate the presense of optional 609 * kernel features. 610 */ 611 #define FEATURE(name, desc) \ 612 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 613 SYSCTL_NULL_INT_PTR, 1, desc) 614 615 #endif /* _KERNEL */ 616 617 /* 618 * Top-level identifiers 619 */ 620 #define CTL_UNSPEC 0 /* unused */ 621 #define CTL_KERN 1 /* "high kernel": proc, limits */ 622 #define CTL_VM 2 /* virtual memory */ 623 #define CTL_VFS 3 /* filesystem, mount type is next */ 624 #define CTL_NET 4 /* network, see socket.h */ 625 #define CTL_DEBUG 5 /* debugging parameters */ 626 #define CTL_HW 6 /* generic cpu/io */ 627 #define CTL_MACHDEP 7 /* machine dependent */ 628 #define CTL_USER 8 /* user-level */ 629 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 630 631 /* 632 * CTL_KERN identifiers 633 */ 634 #define KERN_OSTYPE 1 /* string: system version */ 635 #define KERN_OSRELEASE 2 /* string: system release */ 636 #define KERN_OSREV 3 /* int: system revision */ 637 #define KERN_VERSION 4 /* string: compile time info */ 638 #define KERN_MAXVNODES 5 /* int: max vnodes */ 639 #define KERN_MAXPROC 6 /* int: max processes */ 640 #define KERN_MAXFILES 7 /* int: max open files */ 641 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 642 #define KERN_SECURELVL 9 /* int: system security level */ 643 #define KERN_HOSTNAME 10 /* string: hostname */ 644 #define KERN_HOSTID 11 /* int: host identifier */ 645 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 646 #define KERN_VNODE 13 /* struct: vnode structures */ 647 #define KERN_PROC 14 /* struct: process entries */ 648 #define KERN_FILE 15 /* struct: file entries */ 649 #define KERN_PROF 16 /* node: kernel profiling info */ 650 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 651 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 652 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 653 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 654 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 655 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 656 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 657 #define KERN_OSRELDATE 24 /* int: kernel release date */ 658 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 659 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 660 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 661 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 662 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 663 #define KERN_IPC 30 /* node: anything related to IPC */ 664 #define KERN_DUMMY 31 /* unused */ 665 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 666 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 667 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 668 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 669 #define KERN_HOSTUUID 36 /* string: host UUID identifier */ 670 #define KERN_ARND 37 /* int: from arc4rand() */ 671 /* 672 * KERN_PROC subtypes 673 */ 674 #define KERN_PROC_ALL 0 /* everything */ 675 #define KERN_PROC_PID 1 /* by process id */ 676 #define KERN_PROC_PGRP 2 /* by process group id */ 677 #define KERN_PROC_SESSION 3 /* by session of pid */ 678 #define KERN_PROC_TTY 4 /* by controlling tty */ 679 #define KERN_PROC_UID 5 /* by effective uid */ 680 #define KERN_PROC_RUID 6 /* by real uid */ 681 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 682 #define KERN_PROC_PROC 8 /* only return procs */ 683 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 684 #define KERN_PROC_RGID 10 /* by real group id */ 685 #define KERN_PROC_GID 11 /* by effective group id */ 686 #define KERN_PROC_PATHNAME 12 /* path to executable */ 687 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 688 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 689 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 690 #define KERN_PROC_INC_THREAD 0x10 /* 691 * modifier for pid, pgrp, tty, 692 * uid, ruid, gid, rgid and proc 693 * This effectively uses 16-31 694 */ 695 #define KERN_PROC_VMMAP 32 /* VM map entries for process */ 696 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 697 #define KERN_PROC_GROUPS 34 /* process groups */ 698 #define KERN_PROC_ENV 35 /* get environment */ 699 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */ 700 #define KERN_PROC_RLIMIT 37 /* process resource limits */ 701 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ 702 #define KERN_PROC_UMASK 39 /* process umask */ 703 #define KERN_PROC_OSREL 40 /* osreldate for process binary */ 704 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */ 705 #define KERN_PROC_CWD 42 /* process current working directory */ 706 707 /* 708 * KERN_IPC identifiers 709 */ 710 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 711 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 712 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 713 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 714 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 715 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 716 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 717 718 /* 719 * CTL_HW identifiers 720 */ 721 #define HW_MACHINE 1 /* string: machine class */ 722 #define HW_MODEL 2 /* string: specific machine model */ 723 #define HW_NCPU 3 /* int: number of cpus */ 724 #define HW_BYTEORDER 4 /* int: machine byte order */ 725 #define HW_PHYSMEM 5 /* int: total memory */ 726 #define HW_USERMEM 6 /* int: non-kernel memory */ 727 #define HW_PAGESIZE 7 /* int: software page size */ 728 #define HW_DISKNAMES 8 /* strings: disk drive names */ 729 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 730 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 731 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 732 #define HW_REALMEM 12 /* int: 'real' memory */ 733 734 /* 735 * CTL_USER definitions 736 */ 737 #define USER_CS_PATH 1 /* string: _CS_PATH */ 738 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 739 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 740 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 741 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 742 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 743 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 744 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 745 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 746 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 747 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 748 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 749 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 750 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 751 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 752 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 753 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 754 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 755 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 756 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 757 758 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 759 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 760 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 761 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 762 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 763 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 764 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 765 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 766 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 767 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 768 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 769 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 770 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 771 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 772 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 773 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 774 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 775 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 776 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 777 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 778 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 779 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 780 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 781 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 782 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 783 784 #define CTL_P1003_1B_MAXID 26 785 786 #ifdef _KERNEL 787 788 /* 789 * Declare some common oids. 790 */ 791 extern struct sysctl_oid_list sysctl__children; 792 SYSCTL_DECL(_kern); 793 SYSCTL_DECL(_kern_features); 794 SYSCTL_DECL(_kern_ipc); 795 SYSCTL_DECL(_kern_proc); 796 SYSCTL_DECL(_kern_sched); 797 SYSCTL_DECL(_kern_sched_stats); 798 SYSCTL_DECL(_sysctl); 799 SYSCTL_DECL(_vm); 800 SYSCTL_DECL(_vm_stats); 801 SYSCTL_DECL(_vm_stats_misc); 802 SYSCTL_DECL(_vfs); 803 SYSCTL_DECL(_net); 804 SYSCTL_DECL(_debug); 805 SYSCTL_DECL(_debug_sizeof); 806 SYSCTL_DECL(_dev); 807 SYSCTL_DECL(_hw); 808 SYSCTL_DECL(_hw_bus); 809 SYSCTL_DECL(_hw_bus_devices); 810 SYSCTL_DECL(_hw_bus_info); 811 SYSCTL_DECL(_machdep); 812 SYSCTL_DECL(_user); 813 SYSCTL_DECL(_compat); 814 SYSCTL_DECL(_regression); 815 SYSCTL_DECL(_security); 816 SYSCTL_DECL(_security_bsd); 817 818 extern char machine[]; 819 extern char osrelease[]; 820 extern char ostype[]; 821 extern char kern_ident[]; 822 823 /* Dynamic oid handling */ 824 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 825 struct sysctl_oid_list *parent, int nbr, const char *name, int kind, 826 void *arg1, intptr_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS), 827 const char *fmt, const char *descr); 828 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 829 int recurse); 830 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 831 int sysctl_move_oid(struct sysctl_oid *oidp, 832 struct sysctl_oid_list *parent); 833 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 834 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 835 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 836 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 837 struct sysctl_oid *oidp); 838 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 839 struct sysctl_oid *oidp); 840 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 841 struct sysctl_oid *oidp); 842 843 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 844 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 845 int flags); 846 int kernel_sysctlbyname(struct thread *td, char *name, void *old, 847 size_t *oldlenp, void *new, size_t newlen, size_t *retval, 848 int flags); 849 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 850 size_t *oldlenp, int inkernel, void *new, size_t newlen, 851 size_t *retval, int flags); 852 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 853 int *nindx, struct sysctl_req *req); 854 void sysctl_wlock(void); 855 void sysctl_wunlock(void); 856 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 857 858 struct sbuf; 859 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 860 struct sysctl_req *); 861 #else /* !_KERNEL */ 862 #include <sys/cdefs.h> 863 864 __BEGIN_DECLS 865 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 866 int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 867 int sysctlnametomib(const char *, int *, size_t *); 868 __END_DECLS 869 #endif /* _KERNEL */ 870 871 #endif /* !_SYS_SYSCTL_H_ */ 872