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 77 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 78 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 79 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 80 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 81 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 82 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 83 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 84 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 85 #define CTLMASK_SECURE 0x00F00000 /* Secure level */ 86 #define CTLFLAG_TUN 0x00080000 /* Tunable variable */ 87 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */ 88 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */ 89 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 90 #define CTLFLAG_DYING 0x00010000 /* oid is being removed */ 91 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */ 92 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */ 93 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR) 94 95 /* 96 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 97 * 98 * Secure when the securelevel is raised to at least N. 99 */ 100 #define CTLSHIFT_SECURE 20 101 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 102 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 103 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 104 105 /* 106 * USE THIS instead of a hardwired number from the categories below 107 * to get dynamically assigned sysctl entries using the linker-set 108 * technology. This is the way nearly all new sysctl variables should 109 * be implemented. 110 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 111 */ 112 #define OID_AUTO (-1) 113 114 /* 115 * The starting number for dynamically-assigned entries. WARNING! 116 * ALL static sysctl entries should have numbers LESS than this! 117 */ 118 #define CTL_AUTO_START 0x100 119 120 #ifdef _KERNEL 121 #include <sys/linker_set.h> 122 123 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \ 124 intptr_t arg2, struct sysctl_req *req 125 126 /* definitions for sysctl_req 'lock' member */ 127 #define REQ_UNWIRED 1 128 #define REQ_WIRED 2 129 130 /* definitions for sysctl_req 'flags' member */ 131 #if defined(__amd64__) || defined(__ia64__) || defined(__powerpc64__) || \ 132 (defined(__mips__) && defined(__mips_n64)) 133 #define SCTL_MASK32 1 /* 32 bit emulation */ 134 #endif 135 136 /* 137 * This describes the access space for a sysctl request. This is needed 138 * so that we can use the interface from the kernel or from user-space. 139 */ 140 struct sysctl_req { 141 struct thread *td; /* used for access checking */ 142 int lock; /* wiring state */ 143 void *oldptr; 144 size_t oldlen; 145 size_t oldidx; 146 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 147 void *newptr; 148 size_t newlen; 149 size_t newidx; 150 int (*newfunc)(struct sysctl_req *, void *, size_t); 151 size_t validlen; 152 int flags; 153 }; 154 155 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 156 157 /* 158 * This describes one "oid" in the MIB tree. Potentially more nodes can 159 * be hidden behind it, expanded by the handler. 160 */ 161 struct sysctl_oid { 162 struct sysctl_oid_list *oid_parent; 163 SLIST_ENTRY(sysctl_oid) oid_link; 164 int oid_number; 165 u_int oid_kind; 166 void *oid_arg1; 167 intptr_t oid_arg2; 168 const char *oid_name; 169 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 170 const char *oid_fmt; 171 int oid_refcnt; 172 u_int oid_running; 173 const char *oid_descr; 174 }; 175 176 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 177 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 178 179 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 180 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 181 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 182 int sysctl_handle_64(SYSCTL_HANDLER_ARGS); 183 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 184 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 185 186 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS); 187 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS); 188 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS); 189 190 /* 191 * These functions are used to add/remove an oid from the mib. 192 */ 193 void sysctl_register_oid(struct sysctl_oid *oidp); 194 void sysctl_unregister_oid(struct sysctl_oid *oidp); 195 196 /* Declare a static oid to allow child oids to be added to it. */ 197 #define SYSCTL_DECL(name) \ 198 extern struct sysctl_oid_list sysctl_##name##_children 199 200 /* Hide these in macros */ 201 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 202 (oid_ptr)->oid_arg1 203 #define SYSCTL_CHILDREN_SET(oid_ptr, val) \ 204 (oid_ptr)->oid_arg1 = (val); 205 #define SYSCTL_STATIC_CHILDREN(oid_name) \ 206 (&sysctl_##oid_name##_children) 207 208 /* === Structs and macros related to context handling === */ 209 210 /* All dynamically created sysctls can be tracked in a context list. */ 211 struct sysctl_ctx_entry { 212 struct sysctl_oid *entry; 213 TAILQ_ENTRY(sysctl_ctx_entry) link; 214 }; 215 216 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 217 218 #define SYSCTL_NODE_CHILDREN(parent, name) \ 219 sysctl_##parent##_##name##_children 220 221 /* 222 * These macros provide type safety for sysctls. SYSCTL_ALLOWED_TYPES() 223 * defines a transparent union of the allowed types. SYSCTL_ASSERT_TYPE() 224 * and SYSCTL_ADD_ASSERT_TYPE() use the transparent union to assert that 225 * the pointer matches the allowed types. 226 * 227 * The allow_0 member allows a literal 0 to be passed for ptr. 228 */ 229 #define SYSCTL_ALLOWED_TYPES(type, decls) \ 230 union sysctl_##type { \ 231 long allow_0; \ 232 decls \ 233 } __attribute__((__transparent_union__)); \ 234 \ 235 static inline void * \ 236 __sysctl_assert_##type(union sysctl_##type ptr) \ 237 { \ 238 return (ptr.a); \ 239 } \ 240 struct __hack 241 242 SYSCTL_ALLOWED_TYPES(INT, int *a; ); 243 SYSCTL_ALLOWED_TYPES(UINT, unsigned int *a; ); 244 SYSCTL_ALLOWED_TYPES(LONG, long *a; ); 245 SYSCTL_ALLOWED_TYPES(ULONG, unsigned long *a; ); 246 SYSCTL_ALLOWED_TYPES(INT64, int64_t *a; long long *b; ); 247 SYSCTL_ALLOWED_TYPES(UINT64, uint64_t *a; unsigned long long *b; ); 248 249 #ifdef notyet 250 #define SYSCTL_ADD_ASSERT_TYPE(type, ptr) \ 251 __sysctl_assert_ ## type (ptr) 252 #define SYSCTL_ASSERT_TYPE(type, ptr, parent, name) \ 253 _SYSCTL_ASSERT_TYPE(type, ptr, __LINE__, parent##_##name) 254 #else 255 #define SYSCTL_ADD_ASSERT_TYPE(type, ptr) ptr 256 #define SYSCTL_ASSERT_TYPE(type, ptr, parent, name) 257 #endif 258 #define _SYSCTL_ASSERT_TYPE(t, p, l, id) \ 259 __SYSCTL_ASSERT_TYPE(t, p, l, id) 260 #define __SYSCTL_ASSERT_TYPE(type, ptr, line, id) \ 261 static inline void \ 262 sysctl_assert_##line##_##id(void) \ 263 { \ 264 (void)__sysctl_assert_##type(ptr); \ 265 } \ 266 struct __hack 267 268 #ifndef NO_SYSCTL_DESCR 269 #define __DESCR(d) d 270 #else 271 #define __DESCR(d) "" 272 #endif 273 274 /* This constructs a "raw" MIB oid. */ 275 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 276 static struct sysctl_oid sysctl__##parent##_##name = { \ 277 &sysctl_##parent##_children, { NULL }, nbr, kind, \ 278 a1, a2, #name, handler, fmt, 0, 0, __DESCR(descr) }; \ 279 DATA_SET(sysctl_set, sysctl__##parent##_##name) 280 281 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 282 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr)) 283 284 /* This constructs a node from which other oids can hang. */ 285 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 286 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 287 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 288 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "N", descr) 289 290 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 291 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 292 NULL, 0, handler, "N", __DESCR(descr)) 293 294 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 295 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 296 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 297 arg, len, sysctl_handle_string, "A", descr) 298 299 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 300 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 301 arg, len, sysctl_handle_string, "A", __DESCR(descr)) 302 303 /* Oid for an int. If ptr is NULL, val is returned. */ 304 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 305 SYSCTL_ASSERT_TYPE(INT, ptr, parent, name); \ 306 SYSCTL_OID(parent, nbr, name, \ 307 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 308 ptr, val, sysctl_handle_int, "I", descr) 309 310 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 311 sysctl_add_oid(ctx, parent, nbr, name, \ 312 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \ 313 SYSCTL_ADD_ASSERT_TYPE(INT, ptr), val, \ 314 sysctl_handle_int, "I", __DESCR(descr)) 315 316 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 317 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 318 SYSCTL_ASSERT_TYPE(UINT, ptr, parent, name); \ 319 SYSCTL_OID(parent, nbr, name, \ 320 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 321 ptr, val, sysctl_handle_int, "IU", descr) 322 323 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 324 sysctl_add_oid(ctx, parent, nbr, name, \ 325 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \ 326 SYSCTL_ADD_ASSERT_TYPE(UINT, ptr), val, \ 327 sysctl_handle_int, "IU", __DESCR(descr)) 328 329 /* Oid for a long. The pointer must be non NULL. */ 330 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 331 SYSCTL_ASSERT_TYPE(LONG, ptr, parent, name); \ 332 SYSCTL_OID(parent, nbr, name, \ 333 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 334 ptr, val, sysctl_handle_long, "L", descr) 335 336 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 337 sysctl_add_oid(ctx, parent, nbr, name, \ 338 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \ 339 SYSCTL_ADD_ASSERT_TYPE(LONG, ptr), 0, \ 340 sysctl_handle_long, "L", __DESCR(descr)) 341 342 /* Oid for an unsigned long. The pointer must be non NULL. */ 343 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 344 SYSCTL_ASSERT_TYPE(ULONG, ptr, parent, name); \ 345 SYSCTL_OID(parent, nbr, name, \ 346 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 347 ptr, val, sysctl_handle_long, "LU", descr) 348 349 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 350 sysctl_add_oid(ctx, parent, nbr, name, \ 351 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \ 352 SYSCTL_ADD_ASSERT_TYPE(ULONG, ptr), 0, \ 353 sysctl_handle_long, "LU", __DESCR(descr)) 354 355 /* Oid for a quad. The pointer must be non NULL. */ 356 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 357 SYSCTL_ASSERT_TYPE(INT64, ptr, parent, name); \ 358 SYSCTL_OID(parent, nbr, name, \ 359 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 360 ptr, val, sysctl_handle_64, "Q", descr) 361 362 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \ 363 sysctl_add_oid(ctx, parent, nbr, name, \ 364 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \ 365 SYSCTL_ADD_ASSERT_TYPE(INT64, ptr), 0, \ 366 sysctl_handle_64, "Q", __DESCR(descr)) 367 368 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 369 SYSCTL_ASSERT_TYPE(UINT64, ptr, parent, name); \ 370 SYSCTL_OID(parent, nbr, name, \ 371 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 372 ptr, val, sysctl_handle_64, "QU", descr) 373 374 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \ 375 sysctl_add_oid(ctx, parent, nbr, name, \ 376 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \ 377 SYSCTL_ADD_ASSERT_TYPE(UINT64, ptr), 0, \ 378 sysctl_handle_64, "QU", __DESCR(descr)) 379 380 /* Oid for an opaque object. Specified by a pointer and a length. */ 381 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 382 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 383 ptr, len, sysctl_handle_opaque, fmt, descr) 384 385 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\ 386 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 387 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)) 388 389 /* Oid for a struct. Specified by a pointer and a type. */ 390 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 391 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 392 ptr, sizeof(struct type), sysctl_handle_opaque, \ 393 "S," #type, descr) 394 395 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 396 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 397 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr)) 398 399 /* Oid for a procedure. Specified by a pointer and an arg. */ 400 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 401 CTASSERT(((access) & CTLTYPE) != 0); \ 402 SYSCTL_OID(parent, nbr, name, (access), \ 403 ptr, arg, handler, fmt, descr) 404 405 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 406 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 407 ptr, arg, handler, fmt, __DESCR(descr)) 408 409 /* 410 * A macro to generate a read-only sysctl to indicate the presense of optional 411 * kernel features. 412 */ 413 #define FEATURE(name, desc) \ 414 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 415 0, 1, desc) 416 417 #endif /* _KERNEL */ 418 419 /* 420 * Top-level identifiers 421 */ 422 #define CTL_UNSPEC 0 /* unused */ 423 #define CTL_KERN 1 /* "high kernel": proc, limits */ 424 #define CTL_VM 2 /* virtual memory */ 425 #define CTL_VFS 3 /* filesystem, mount type is next */ 426 #define CTL_NET 4 /* network, see socket.h */ 427 #define CTL_DEBUG 5 /* debugging parameters */ 428 #define CTL_HW 6 /* generic cpu/io */ 429 #define CTL_MACHDEP 7 /* machine dependent */ 430 #define CTL_USER 8 /* user-level */ 431 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 432 #define CTL_MAXID 10 /* number of valid top-level ids */ 433 434 #define CTL_NAMES { \ 435 { 0, 0 }, \ 436 { "kern", CTLTYPE_NODE }, \ 437 { "vm", CTLTYPE_NODE }, \ 438 { "vfs", CTLTYPE_NODE }, \ 439 { "net", CTLTYPE_NODE }, \ 440 { "debug", CTLTYPE_NODE }, \ 441 { "hw", CTLTYPE_NODE }, \ 442 { "machdep", CTLTYPE_NODE }, \ 443 { "user", CTLTYPE_NODE }, \ 444 { "p1003_1b", CTLTYPE_NODE }, \ 445 } 446 447 /* 448 * CTL_KERN identifiers 449 */ 450 #define KERN_OSTYPE 1 /* string: system version */ 451 #define KERN_OSRELEASE 2 /* string: system release */ 452 #define KERN_OSREV 3 /* int: system revision */ 453 #define KERN_VERSION 4 /* string: compile time info */ 454 #define KERN_MAXVNODES 5 /* int: max vnodes */ 455 #define KERN_MAXPROC 6 /* int: max processes */ 456 #define KERN_MAXFILES 7 /* int: max open files */ 457 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 458 #define KERN_SECURELVL 9 /* int: system security level */ 459 #define KERN_HOSTNAME 10 /* string: hostname */ 460 #define KERN_HOSTID 11 /* int: host identifier */ 461 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 462 #define KERN_VNODE 13 /* struct: vnode structures */ 463 #define KERN_PROC 14 /* struct: process entries */ 464 #define KERN_FILE 15 /* struct: file entries */ 465 #define KERN_PROF 16 /* node: kernel profiling info */ 466 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 467 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 468 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 469 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 470 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 471 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 472 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 473 #define KERN_OSRELDATE 24 /* int: kernel release date */ 474 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 475 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 476 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 477 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 478 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 479 #define KERN_IPC 30 /* node: anything related to IPC */ 480 #define KERN_DUMMY 31 /* unused */ 481 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 482 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 483 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 484 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 485 #define KERN_HOSTUUID 36 /* string: host UUID identifier */ 486 #define KERN_ARND 37 /* int: from arc4rand() */ 487 #define KERN_MAXID 38 /* number of valid kern ids */ 488 489 #define CTL_KERN_NAMES { \ 490 { 0, 0 }, \ 491 { "ostype", CTLTYPE_STRING }, \ 492 { "osrelease", CTLTYPE_STRING }, \ 493 { "osrevision", CTLTYPE_INT }, \ 494 { "version", CTLTYPE_STRING }, \ 495 { "maxvnodes", CTLTYPE_INT }, \ 496 { "maxproc", CTLTYPE_INT }, \ 497 { "maxfiles", CTLTYPE_INT }, \ 498 { "argmax", CTLTYPE_INT }, \ 499 { "securelevel", CTLTYPE_INT }, \ 500 { "hostname", CTLTYPE_STRING }, \ 501 { "hostid", CTLTYPE_UINT }, \ 502 { "clockrate", CTLTYPE_STRUCT }, \ 503 { "vnode", CTLTYPE_STRUCT }, \ 504 { "proc", CTLTYPE_STRUCT }, \ 505 { "file", CTLTYPE_STRUCT }, \ 506 { "profiling", CTLTYPE_NODE }, \ 507 { "posix1version", CTLTYPE_INT }, \ 508 { "ngroups", CTLTYPE_INT }, \ 509 { "job_control", CTLTYPE_INT }, \ 510 { "saved_ids", CTLTYPE_INT }, \ 511 { "boottime", CTLTYPE_STRUCT }, \ 512 { "nisdomainname", CTLTYPE_STRING }, \ 513 { "update", CTLTYPE_INT }, \ 514 { "osreldate", CTLTYPE_INT }, \ 515 { "ntp_pll", CTLTYPE_NODE }, \ 516 { "bootfile", CTLTYPE_STRING }, \ 517 { "maxfilesperproc", CTLTYPE_INT }, \ 518 { "maxprocperuid", CTLTYPE_INT }, \ 519 { "ipc", CTLTYPE_NODE }, \ 520 { "dummy", CTLTYPE_INT }, \ 521 { "ps_strings", CTLTYPE_INT }, \ 522 { "usrstack", CTLTYPE_INT }, \ 523 { "logsigexit", CTLTYPE_INT }, \ 524 { "iov_max", CTLTYPE_INT }, \ 525 { "hostuuid", CTLTYPE_STRING }, \ 526 { "arc4rand", CTLTYPE_OPAQUE }, \ 527 } 528 529 /* 530 * CTL_VFS identifiers 531 */ 532 #define CTL_VFS_NAMES { \ 533 { "vfsconf", CTLTYPE_STRUCT }, \ 534 } 535 536 /* 537 * KERN_PROC subtypes 538 */ 539 #define KERN_PROC_ALL 0 /* everything */ 540 #define KERN_PROC_PID 1 /* by process id */ 541 #define KERN_PROC_PGRP 2 /* by process group id */ 542 #define KERN_PROC_SESSION 3 /* by session of pid */ 543 #define KERN_PROC_TTY 4 /* by controlling tty */ 544 #define KERN_PROC_UID 5 /* by effective uid */ 545 #define KERN_PROC_RUID 6 /* by real uid */ 546 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 547 #define KERN_PROC_PROC 8 /* only return procs */ 548 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 549 #define KERN_PROC_RGID 10 /* by real group id */ 550 #define KERN_PROC_GID 11 /* by effective group id */ 551 #define KERN_PROC_PATHNAME 12 /* path to executable */ 552 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */ 553 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */ 554 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */ 555 #define KERN_PROC_INC_THREAD 0x10 /* 556 * modifier for pid, pgrp, tty, 557 * uid, ruid, gid, rgid and proc 558 * This effectively uses 16-31 559 */ 560 #define KERN_PROC_VMMAP 32 /* VM map entries for process */ 561 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */ 562 #define KERN_PROC_GROUPS 34 /* process groups */ 563 #define KERN_PROC_ENV 35 /* get environment */ 564 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */ 565 #define KERN_PROC_RLIMIT 37 /* process resource limits */ 566 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */ 567 #define KERN_PROC_UMASK 39 /* process umask */ 568 #define KERN_PROC_OSREL 40 /* osreldate for process binary */ 569 570 /* 571 * KERN_IPC identifiers 572 */ 573 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 574 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 575 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 576 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 577 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 578 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 579 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 580 581 /* 582 * CTL_HW identifiers 583 */ 584 #define HW_MACHINE 1 /* string: machine class */ 585 #define HW_MODEL 2 /* string: specific machine model */ 586 #define HW_NCPU 3 /* int: number of cpus */ 587 #define HW_BYTEORDER 4 /* int: machine byte order */ 588 #define HW_PHYSMEM 5 /* int: total memory */ 589 #define HW_USERMEM 6 /* int: non-kernel memory */ 590 #define HW_PAGESIZE 7 /* int: software page size */ 591 #define HW_DISKNAMES 8 /* strings: disk drive names */ 592 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 593 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 594 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 595 #define HW_REALMEM 12 /* int: 'real' memory */ 596 #define HW_MAXID 13 /* number of valid hw ids */ 597 598 #define CTL_HW_NAMES { \ 599 { 0, 0 }, \ 600 { "machine", CTLTYPE_STRING }, \ 601 { "model", CTLTYPE_STRING }, \ 602 { "ncpu", CTLTYPE_INT }, \ 603 { "byteorder", CTLTYPE_INT }, \ 604 { "physmem", CTLTYPE_ULONG }, \ 605 { "usermem", CTLTYPE_ULONG }, \ 606 { "pagesize", CTLTYPE_INT }, \ 607 { "disknames", CTLTYPE_STRUCT }, \ 608 { "diskstats", CTLTYPE_STRUCT }, \ 609 { "floatingpoint", CTLTYPE_INT }, \ 610 { "machine_arch", CTLTYPE_STRING }, \ 611 { "realmem", CTLTYPE_ULONG }, \ 612 } 613 614 /* 615 * CTL_USER definitions 616 */ 617 #define USER_CS_PATH 1 /* string: _CS_PATH */ 618 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 619 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 620 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 621 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 622 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 623 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 624 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 625 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 626 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 627 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 628 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 629 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 630 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 631 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 632 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 633 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 634 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 635 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 636 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 637 #define USER_MAXID 21 /* number of valid user ids */ 638 639 #define CTL_USER_NAMES { \ 640 { 0, 0 }, \ 641 { "cs_path", CTLTYPE_STRING }, \ 642 { "bc_base_max", CTLTYPE_INT }, \ 643 { "bc_dim_max", CTLTYPE_INT }, \ 644 { "bc_scale_max", CTLTYPE_INT }, \ 645 { "bc_string_max", CTLTYPE_INT }, \ 646 { "coll_weights_max", CTLTYPE_INT }, \ 647 { "expr_nest_max", CTLTYPE_INT }, \ 648 { "line_max", CTLTYPE_INT }, \ 649 { "re_dup_max", CTLTYPE_INT }, \ 650 { "posix2_version", CTLTYPE_INT }, \ 651 { "posix2_c_bind", CTLTYPE_INT }, \ 652 { "posix2_c_dev", CTLTYPE_INT }, \ 653 { "posix2_char_term", CTLTYPE_INT }, \ 654 { "posix2_fort_dev", CTLTYPE_INT }, \ 655 { "posix2_fort_run", CTLTYPE_INT }, \ 656 { "posix2_localedef", CTLTYPE_INT }, \ 657 { "posix2_sw_dev", CTLTYPE_INT }, \ 658 { "posix2_upe", CTLTYPE_INT }, \ 659 { "stream_max", CTLTYPE_INT }, \ 660 { "tzname_max", CTLTYPE_INT }, \ 661 } 662 663 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 664 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 665 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 666 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 667 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 668 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 669 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 670 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 671 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 672 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 673 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 674 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 675 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 676 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 677 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 678 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 679 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 680 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 681 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 682 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 683 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 684 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 685 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 686 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 687 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 688 689 #define CTL_P1003_1B_MAXID 26 690 691 #define CTL_P1003_1B_NAMES { \ 692 { 0, 0 }, \ 693 { "asynchronous_io", CTLTYPE_INT }, \ 694 { "mapped_files", CTLTYPE_INT }, \ 695 { "memlock", CTLTYPE_INT }, \ 696 { "memlock_range", CTLTYPE_INT }, \ 697 { "memory_protection", CTLTYPE_INT }, \ 698 { "message_passing", CTLTYPE_INT }, \ 699 { "prioritized_io", CTLTYPE_INT }, \ 700 { "priority_scheduling", CTLTYPE_INT }, \ 701 { "realtime_signals", CTLTYPE_INT }, \ 702 { "semaphores", CTLTYPE_INT }, \ 703 { "fsync", CTLTYPE_INT }, \ 704 { "shared_memory_objects", CTLTYPE_INT }, \ 705 { "synchronized_io", CTLTYPE_INT }, \ 706 { "timers", CTLTYPE_INT }, \ 707 { "aio_listio_max", CTLTYPE_INT }, \ 708 { "aio_max", CTLTYPE_INT }, \ 709 { "aio_prio_delta_max", CTLTYPE_INT }, \ 710 { "delaytimer_max", CTLTYPE_INT }, \ 711 { "mq_open_max", CTLTYPE_INT }, \ 712 { "pagesize", CTLTYPE_INT }, \ 713 { "rtsig_max", CTLTYPE_INT }, \ 714 { "nsems_max", CTLTYPE_INT }, \ 715 { "sem_value_max", CTLTYPE_INT }, \ 716 { "sigqueue_max", CTLTYPE_INT }, \ 717 { "timer_max", CTLTYPE_INT }, \ 718 } 719 720 #ifdef _KERNEL 721 722 /* 723 * Declare some common oids. 724 */ 725 extern struct sysctl_oid_list sysctl__children; 726 SYSCTL_DECL(_kern); 727 SYSCTL_DECL(_kern_features); 728 SYSCTL_DECL(_kern_ipc); 729 SYSCTL_DECL(_kern_proc); 730 SYSCTL_DECL(_kern_sched); 731 SYSCTL_DECL(_kern_sched_stats); 732 SYSCTL_DECL(_sysctl); 733 SYSCTL_DECL(_vm); 734 SYSCTL_DECL(_vm_stats); 735 SYSCTL_DECL(_vm_stats_misc); 736 SYSCTL_DECL(_vfs); 737 SYSCTL_DECL(_net); 738 SYSCTL_DECL(_debug); 739 SYSCTL_DECL(_debug_sizeof); 740 SYSCTL_DECL(_dev); 741 SYSCTL_DECL(_hw); 742 SYSCTL_DECL(_hw_bus); 743 SYSCTL_DECL(_hw_bus_devices); 744 SYSCTL_DECL(_hw_bus_info); 745 SYSCTL_DECL(_machdep); 746 SYSCTL_DECL(_user); 747 SYSCTL_DECL(_compat); 748 SYSCTL_DECL(_regression); 749 SYSCTL_DECL(_security); 750 SYSCTL_DECL(_security_bsd); 751 752 extern char machine[]; 753 extern char osrelease[]; 754 extern char ostype[]; 755 extern char kern_ident[]; 756 757 /* Dynamic oid handling */ 758 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 759 struct sysctl_oid_list *parent, int nbr, const char *name, 760 int kind, void *arg1, intptr_t arg2, 761 int (*handler) (SYSCTL_HANDLER_ARGS), 762 const char *fmt, const char *descr); 763 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 764 int recurse); 765 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 766 int sysctl_move_oid(struct sysctl_oid *oidp, 767 struct sysctl_oid_list *parent); 768 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 769 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 770 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 771 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 772 struct sysctl_oid *oidp); 773 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 774 struct sysctl_oid *oidp); 775 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 776 struct sysctl_oid *oidp); 777 778 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 779 size_t *oldlenp, void *new, size_t newlen, 780 size_t *retval, int flags); 781 int kernel_sysctlbyname(struct thread *td, char *name, 782 void *old, size_t *oldlenp, void *new, size_t newlen, 783 size_t *retval, int flags); 784 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 785 size_t *oldlenp, int inkernel, void *new, size_t newlen, 786 size_t *retval, int flags); 787 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 788 int *nindx, struct sysctl_req *req); 789 void sysctl_lock(void); 790 void sysctl_unlock(void); 791 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 792 793 struct sbuf; 794 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 795 struct sysctl_req *); 796 #else /* !_KERNEL */ 797 #include <sys/cdefs.h> 798 799 __BEGIN_DECLS 800 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 801 int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 802 int sysctlnametomib(const char *, int *, size_t *); 803 __END_DECLS 804 #endif /* _KERNEL */ 805 806 #endif /* !_SYS_SYSCTL_H_ */ 807