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: head/sys/sys/sysctl.h 204170 2010-02-21 13:57:02Z ed $ 34 */ 35 36 #ifndef _SYS_SYSCTL_H_ 37 #define _SYS_SYSCTL_H_ 38 39 #ifndef _SYS_TYPES_H_ 40 #include <sys/types.h> 41 #endif 42 #ifndef _SYS_QUEUE_H_ 43 #include <sys/queue.h> 44 #endif 45 46 /* 47 * Definitions for sysctl call. The sysctl call uses a hierarchical name 48 * for objects that can be examined or modified. The name is expressed as 49 * a sequence of integers. Like a file path name, the meaning of each 50 * component depends on its place in the hierarchy. The top-level and kern 51 * identifiers are defined here, and other identifiers are defined in the 52 * respective subsystem header files. 53 */ 54 55 #define CTL_MAXNAME 12 /* largest number of components supported */ 56 57 /* 58 * Each subsystem defined by sysctl defines a list of variables 59 * for that subsystem. Each name is either a node with further 60 * levels defined below it, or it is a leaf of some particular 61 * type given below. Each sysctl level defines a set of name/type 62 * pairs to be used by sysctl(1) in manipulating the subsystem. 63 */ 64 struct ctlname { 65 char *ctl_name; /* subsystem name */ 66 int ctl_type; /* type of name */ 67 }; 68 69 #define CTLTYPE 0xf /* Mask for the type */ 70 #define CTLTYPE_NODE 1 /* name is a node */ 71 #define CTLTYPE_INT 2 /* name describes an integer */ 72 #define CTLTYPE_STRING 3 /* name describes a string */ 73 #define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ 74 #define CTLTYPE_OPAQUE 5 /* name describes a structure */ 75 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 76 #define CTLTYPE_UINT 6 /* name describes an unsigned integer */ 77 #define CTLTYPE_LONG 7 /* name describes a long */ 78 #define CTLTYPE_ULONG 8 /* name describes an unsigned long */ 79 #define CTLTYPE_UQUAD 9 /* name describes an unsigned 64-bit number */ 80 81 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 82 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 83 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 84 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 85 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 86 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 87 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 88 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 89 #define CTLMASK_SECURE 0x00F00000 /* Secure level */ 90 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */ 91 #define CTLFLAG_SHLOCK 0x00008000 /* shlock on write (def is exlock) */ 92 #define CTLFLAG_EXLOCK 0x00004000 /* exlock on read (def is shlock) */ 93 #define CTLFLAG_NOLOCK 0x00002000 /* no lock required */ 94 #define CTLMASK_TYPE 0x0000000F /* type field */ 95 96 /* 97 * USE THIS instead of a hardwired number from the categories below 98 * to get dynamically assigned sysctl entries using the linker-set 99 * technology. This is the way nearly all new sysctl variables should 100 * be implemented. 101 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 102 */ 103 #define OID_AUTO (-1) 104 105 #ifdef _KERNEL 106 107 #include <sys/kernel.h> /* for DATA_SET */ 108 #ifndef _SYS_LOCK_H_ 109 #include <sys/lock.h> 110 #endif 111 112 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \ 113 struct sysctl_req *req 114 115 /* 116 * This describes the access space for a sysctl request. This is needed 117 * so that we can use the interface from the kernel or from user-space. 118 */ 119 struct sysctl_req { 120 struct thread *td; /* used for access checking */ 121 int lock; /* wiring state */ 122 void *oldptr; 123 size_t oldlen; 124 size_t oldidx; 125 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 126 void *newptr; 127 size_t newlen; 128 size_t newidx; 129 int (*newfunc)(struct sysctl_req *, void *, size_t); 130 size_t validlen; 131 int flags; 132 }; 133 134 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 135 136 /* 137 * This describes one "oid" in the MIB tree. Potentially more nodes can 138 * be hidden behind it, expanded by the handler. 139 */ 140 struct sysctl_oid { 141 struct sysctl_oid_list *oid_parent; 142 SLIST_ENTRY(sysctl_oid) oid_link; 143 int oid_number; 144 int oid_kind; 145 void *oid_arg1; 146 int oid_arg2; 147 const char *oid_name; 148 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 149 const char *oid_fmt; 150 int oid_refcnt; 151 u_int oid_running; 152 const char *oid_descr; 153 struct lock oid_lock; /* per-node lock */ 154 }; 155 156 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 157 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 158 #define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1) 159 160 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 161 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 162 int sysctl_handle_quad(SYSCTL_HANDLER_ARGS); 163 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS); 164 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 165 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 166 167 extern struct lock sysctllock; 168 169 #define SYSCTL_XLOCK() _sysctl_xlock() 170 #define SYSCTL_XUNLOCK() _sysctl_xunlock() 171 #define SYSCTL_SLOCK() lockmgr(&mycpu->gd_sysctllock, LK_SHARED) 172 #define SYSCTL_SUNLOCK() lockmgr(&mycpu->gd_sysctllock, LK_RELEASE) 173 #define SYSCTL_ASSERT_LOCKED() \ 174 KKASSERT(lockstatus(&mycpu->gd_sysctllock, curthread) != 0) 175 176 /* 177 * These functions are used to add/remove an oid from the mib. 178 */ 179 void sysctl_register_oid(struct sysctl_oid *oidp); 180 void sysctl_unregister_oid(struct sysctl_oid *oidp); 181 182 /* Declare a static oid to allow child oids to be added to it. */ 183 #define SYSCTL_DECL(name) \ 184 extern struct sysctl_oid_list sysctl_##name##_children 185 186 /* Hide these in macros */ 187 #define SYSCTL_SET_CHILDREN(oid_ptr, children) do { \ 188 (oid_ptr)->oid_arg1 = (children); \ 189 } while(0) 190 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 191 (oid_ptr)->oid_arg1 192 #define SYSCTL_STATIC_CHILDREN(oid_name) \ 193 (&sysctl_##oid_name##_children) 194 195 /* === Structs and macros related to context handling === */ 196 197 /* All dynamically created sysctls can be tracked in a context list. */ 198 struct sysctl_ctx_entry { 199 struct sysctl_oid *entry; 200 TAILQ_ENTRY(sysctl_ctx_entry) link; 201 }; 202 203 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 204 205 #define SYSCTL_NODE_CHILDREN(parent, name) \ 206 sysctl_##parent##_##name##_children 207 208 #ifndef NO_SYSCTL_DESCR 209 #define __DESCR(d) d 210 #else 211 #define __DESCR(d) "" 212 #endif 213 214 /* This constructs a "raw" MIB oid. */ 215 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr)\ 216 static struct sysctl_oid sysctl__##parent##_##name = { \ 217 &sysctl_##parent##_children, \ 218 { NULL }, \ 219 nbr, \ 220 kind, \ 221 a1, \ 222 a2, \ 223 #name, \ 224 handler, \ 225 fmt, \ 226 0, \ 227 0, \ 228 __DESCR(descr) \ 229 }; \ 230 DATA_SET(sysctl_set, sysctl__##parent##_##name) 231 232 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 233 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr); 234 235 /* This constructs a node from which other oids can hang. */ 236 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 237 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 238 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 239 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "N", descr) 240 241 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 242 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 243 0, 0, handler, "N", descr) 244 245 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 246 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 247 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 248 arg, len, sysctl_handle_string, "A", descr) 249 250 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 251 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 252 arg, len, sysctl_handle_string, "A", descr) 253 254 /* Oid for an int. If ptr is NULL, val is returned. */ 255 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 256 SYSCTL_OID(parent, nbr, name, \ 257 CTLTYPE_INT|CTLFLAG_NOLOCK|(access), \ 258 ptr, val, sysctl_handle_int, "I", descr) 259 260 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 261 sysctl_add_oid(ctx, parent, nbr, name, \ 262 CTLTYPE_INT|CTLFLAG_NOLOCK|(access), \ 263 ptr, val, sysctl_handle_int, "I", descr) 264 265 /* Oid for a quad. If ptr is NULL, val is returned. */ 266 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \ 267 SYSCTL_OID(parent, nbr, name, \ 268 CTLTYPE_QUAD|CTLFLAG_NOLOCK|(access), \ 269 ptr, val, sysctl_handle_quad, "Q", descr) 270 271 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, val, descr) \ 272 sysctl_add_oid(ctx, parent, nbr, name, \ 273 CTLTYPE_QUAD|CTLFLAG_NOLOCK|(access), \ 274 ptr, val, sysctl_handle_quad, "Q", descr) 275 276 /* Oid for an unsigned quad. If ptr is NULL, val is returned. */ 277 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 278 SYSCTL_OID(parent, nbr, name, \ 279 CTLTYPE_UQUAD|CTLFLAG_NOLOCK|(access), \ 280 ptr, val, sysctl_handle_quad, "QU", descr) 281 282 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, val, descr) \ 283 sysctl_add_oid(ctx, parent, nbr, name, \ 284 CTLTYPE_UQUAD|CTLFLAG_NOLOCK|(access), \ 285 ptr, val, sysctl_handle_quad, "QU", descr) 286 287 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 288 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 289 SYSCTL_OID(parent, nbr, name, \ 290 CTLTYPE_UINT|CTLFLAG_NOLOCK|(access), \ 291 ptr, val, sysctl_handle_int, "IU", descr) 292 293 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 294 sysctl_add_oid(ctx, parent, nbr, name, \ 295 CTLTYPE_UINT|CTLFLAG_NOLOCK|(access), \ 296 ptr, val, sysctl_handle_int, "IU", descr) 297 298 /* Oid for a long. The pointer must be non NULL. */ 299 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 300 SYSCTL_OID(parent, nbr, name, \ 301 CTLTYPE_LONG|CTLFLAG_NOLOCK|(access), \ 302 ptr, val, sysctl_handle_long, "L", descr) 303 304 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 305 sysctl_add_oid(ctx, parent, nbr, name, \ 306 CTLTYPE_LONG|CTLFLAG_NOLOCK|(access), \ 307 ptr, 0, sysctl_handle_long, "L", descr) 308 309 /* Oid for a long. The pointer must be non NULL. */ 310 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 311 SYSCTL_OID(parent, nbr, name, \ 312 CTLTYPE_ULONG|CTLFLAG_NOLOCK|(access), \ 313 ptr, val, sysctl_handle_long, "LU", descr) 314 315 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 316 sysctl_add_oid(ctx, parent, nbr, name, \ 317 CTLTYPE_ULONG|CTLFLAG_NOLOCK|(access), \ 318 ptr, 0, sysctl_handle_long, "LU", descr) 319 320 /* Oid for an opaque object. Specified by a pointer and a length. */ 321 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 322 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 323 ptr, len, sysctl_handle_opaque, fmt, descr) 324 325 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 326 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 327 ptr, len, sysctl_handle_opaque, fmt, descr) 328 329 /* Oid for a struct. Specified by a pointer and a type. */ 330 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 331 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 332 ptr, sizeof(struct type), sysctl_handle_opaque, \ 333 "S," #type, descr) 334 335 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 336 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 337 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr) 338 339 /* Oid for a procedure. Specified by a pointer and an arg. */ 340 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 341 SYSCTL_OID(parent, nbr, name, (access), \ 342 ptr, arg, handler, fmt, descr) 343 344 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 345 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 346 ptr, arg, handler, fmt, descr) 347 348 #endif /* _KERNEL */ 349 350 /* 351 * Top-level identifiers 352 */ 353 #define CTL_UNSPEC 0 /* unused */ 354 #define CTL_KERN 1 /* "high kernel": proc, limits */ 355 #define CTL_VM 2 /* virtual memory */ 356 #define CTL_VFS 3 /* file system, mount type is next */ 357 #define CTL_NET 4 /* network, see socket.h */ 358 #define CTL_DEBUG 5 /* debugging parameters */ 359 #define CTL_HW 6 /* generic cpu/io */ 360 #define CTL_MACHDEP 7 /* machine dependent */ 361 #define CTL_USER 8 /* user-level */ 362 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 363 #define CTL_LWKT 10 /* light weight kernel threads */ 364 #define CTL_MAXID 11 /* number of valid top-level ids */ 365 366 #define CTL_NAMES { \ 367 { 0, 0 }, \ 368 { "kern", CTLTYPE_NODE }, \ 369 { "vm", CTLTYPE_NODE }, \ 370 { "vfs", CTLTYPE_NODE }, \ 371 { "net", CTLTYPE_NODE }, \ 372 { "debug", CTLTYPE_NODE }, \ 373 { "hw", CTLTYPE_NODE }, \ 374 { "machdep", CTLTYPE_NODE }, \ 375 { "user", CTLTYPE_NODE }, \ 376 { "p1003_1b", CTLTYPE_NODE }, \ 377 { "lwkt", CTLTYPE_NODE }, \ 378 } 379 380 /* 381 * CTL_KERN identifiers 382 */ 383 #define KERN_OSTYPE 1 /* string: system version */ 384 #define KERN_OSRELEASE 2 /* string: system release */ 385 #define KERN_OSREV 3 /* int: system revision */ 386 #define KERN_VERSION 4 /* string: compile time info */ 387 #define KERN_MAXVNODES 5 /* int: max vnodes */ 388 #define KERN_MAXPROC 6 /* int: max processes */ 389 #define KERN_MAXFILES 7 /* int: max open files */ 390 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 391 #define KERN_SECURELVL 9 /* int: system security level */ 392 #define KERN_HOSTNAME 10 /* string: hostname */ 393 #define KERN_HOSTID 11 /* int: host identifier */ 394 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 395 #define KERN_VNODE 13 /* struct: vnode structures */ 396 #define KERN_PROC 14 /* struct: process entries */ 397 #define KERN_FILE 15 /* struct: file entries */ 398 #define KERN_PROF 16 /* node: kernel profiling info */ 399 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 400 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 401 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 402 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 403 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 404 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 405 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 406 #define KERN_OSRELDATE 24 /* int: OS release date */ 407 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 408 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 409 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 410 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 411 #define KERN_DUMPDEV 29 /* udev_t: device to dump on */ 412 #define KERN_IPC 30 /* node: anything related to IPC */ 413 #define KERN_DUMMY 31 /* unused */ 414 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 415 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 416 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 417 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 418 #define KERN_MAXPOSIXLOCKSPERUID 36 /* int: max POSIX locks per uid */ 419 #define KERN_MAXID 37 /* number of valid kern ids */ 420 421 #define CTL_KERN_NAMES { \ 422 { 0, 0 }, \ 423 { "ostype", CTLTYPE_STRING }, \ 424 { "osrelease", CTLTYPE_STRING }, \ 425 { "osrevision", CTLTYPE_INT }, \ 426 { "version", CTLTYPE_STRING }, \ 427 { "maxvnodes", CTLTYPE_INT }, \ 428 { "maxproc", CTLTYPE_INT }, \ 429 { "maxfiles", CTLTYPE_INT }, \ 430 { "argmax", CTLTYPE_INT }, \ 431 { "securelevel", CTLTYPE_INT }, \ 432 { "hostname", CTLTYPE_STRING }, \ 433 { "hostid", CTLTYPE_UINT }, \ 434 { "clockrate", CTLTYPE_STRUCT }, \ 435 { "vnode", CTLTYPE_STRUCT }, \ 436 { "proc", CTLTYPE_STRUCT }, \ 437 { "file", CTLTYPE_STRUCT }, \ 438 { "profiling", CTLTYPE_NODE }, \ 439 { "posix1version", CTLTYPE_INT }, \ 440 { "ngroups", CTLTYPE_INT }, \ 441 { "job_control", CTLTYPE_INT }, \ 442 { "saved_ids", CTLTYPE_INT }, \ 443 { "boottime", CTLTYPE_STRUCT }, \ 444 { "nisdomainname", CTLTYPE_STRING }, \ 445 { "update", CTLTYPE_INT }, \ 446 { "osreldate", CTLTYPE_INT }, \ 447 { "ntp_pll", CTLTYPE_NODE }, \ 448 { "bootfile", CTLTYPE_STRING }, \ 449 { "maxfilesperproc", CTLTYPE_INT }, \ 450 { "maxprocperuid", CTLTYPE_INT }, \ 451 { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \ 452 { "ipc", CTLTYPE_NODE }, \ 453 { "dummy", CTLTYPE_INT }, \ 454 { "ps_strings", CTLTYPE_INT }, \ 455 { "usrstack", CTLTYPE_INT }, \ 456 { "logsigexit", CTLTYPE_INT }, \ 457 { "iov_max", CTLTYPE_INT }, \ 458 { "maxposixlocksperuid", CTLTYPE_INT }, \ 459 } 460 461 /* 462 * CTL_VFS identifiers 463 */ 464 #define CTL_VFS_NAMES { \ 465 { "vfsconf", CTLTYPE_STRUCT }, \ 466 } 467 468 /* 469 * KERN_PROC subtypes 470 */ 471 #define KERN_PROC_ALL 0 /* everything */ 472 #define KERN_PROC_PID 1 /* by process id */ 473 #define KERN_PROC_PGRP 2 /* by process group id */ 474 #define KERN_PROC_SESSION 3 /* by session of pid */ 475 #define KERN_PROC_TTY 4 /* by controlling tty */ 476 #define KERN_PROC_UID 5 /* by effective uid */ 477 #define KERN_PROC_RUID 6 /* by real uid */ 478 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 479 #define KERN_PROC_CWD 8 /* get cwd */ 480 #define KERN_PROC_PATHNAME 9 /* path to executable */ 481 #define KERN_PROC_SIGTRAMP 10 /* addr[2]: sigtramp addr range */ 482 483 #define KERN_PROC_FLAGMASK 0x10 484 #define KERN_PROC_FLAG_LWP 0x10 485 486 /* 487 * KERN_IPC identifiers 488 */ 489 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 490 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 491 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 492 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 493 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 494 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 495 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 496 #define KIPC_MBSTAT 8 /* struct: mbuf usage statistics */ 497 #define KIPC_NMBCLUSTERS 9 /* int: maximum mbuf clusters */ 498 499 /* 500 * CTL_HW identifiers 501 */ 502 #define HW_MACHINE 1 /* string: machine class */ 503 #define HW_MODEL 2 /* string: specific machine model */ 504 #define HW_NCPU 3 /* int: number of cpus */ 505 #define HW_BYTEORDER 4 /* int: machine byte order */ 506 #define HW_PHYSMEM 5 /* int: total memory */ 507 #define HW_USERMEM 6 /* int: non-kernel memory */ 508 #define HW_PAGESIZE 7 /* int: software page size */ 509 #define HW_DISKNAMES 8 /* strings: disk drive names */ 510 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 511 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 512 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 513 #define HW_MACHINE_PLATFORM 12 /* string: platform architecture */ 514 #define HW_SENSORS 13 /* node: hardware sensors */ 515 #define HW_MAXID 14 /* number of valid hw ids */ 516 517 #define CTL_HW_NAMES { \ 518 { 0, 0 }, \ 519 { "machine", CTLTYPE_STRING }, \ 520 { "model", CTLTYPE_STRING }, \ 521 { "ncpu", CTLTYPE_INT }, \ 522 { "byteorder", CTLTYPE_INT }, \ 523 { "physmem", CTLTYPE_ULONG }, \ 524 { "usermem", CTLTYPE_UINT }, \ 525 { "pagesize", CTLTYPE_INT }, \ 526 { "disknames", CTLTYPE_STRUCT }, \ 527 { "diskstats", CTLTYPE_STRUCT }, \ 528 { "floatingpoint", CTLTYPE_INT }, \ 529 { "arch", CTLTYPE_STRING }, \ 530 { "platform", CTLTYPE_STRING }, \ 531 { "sensors", CTLTYPE_NODE }, \ 532 } 533 534 /* 535 * CTL_USER definitions 536 */ 537 #define USER_CS_PATH 1 /* string: _CS_PATH */ 538 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 539 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 540 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 541 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 542 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 543 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 544 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 545 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 546 #define USER_POSIX2_VERSION 10 /* int: _POSIX2_VERSION */ 547 #define USER_POSIX2_C_BIND 11 /* int: _POSIX2_C_BIND */ 548 #define USER_POSIX2_C_DEV 12 /* int: _POSIX2_C_DEV */ 549 #define USER_POSIX2_CHAR_TERM 13 /* int: _POSIX2_CHAR_TERM */ 550 #define USER_POSIX2_FORT_DEV 14 /* int: _POSIX2_FORT_DEV */ 551 #define USER_POSIX2_FORT_RUN 15 /* int: _POSIX2_FORT_RUN */ 552 #define USER_POSIX2_LOCALEDEF 16 /* int: _POSIX2_LOCALEDEF */ 553 #define USER_POSIX2_SW_DEV 17 /* int: _POSIX2_SW_DEV */ 554 #define USER_POSIX2_UPE 18 /* int: _POSIX2_UPE */ 555 #define USER_STREAM_MAX 19 /* int: _POSIX2_STREAM_MAX */ 556 #define USER_TZNAME_MAX 20 /* int: _POSIX2_TZNAME_MAX */ 557 #define USER_MAXID 21 /* number of valid user ids */ 558 559 #define CTL_USER_NAMES { \ 560 { 0, 0 }, \ 561 { "cs_path", CTLTYPE_STRING }, \ 562 { "bc_base_max", CTLTYPE_INT }, \ 563 { "bc_dim_max", CTLTYPE_INT }, \ 564 { "bc_scale_max", CTLTYPE_INT }, \ 565 { "bc_string_max", CTLTYPE_INT }, \ 566 { "coll_weights_max", CTLTYPE_INT }, \ 567 { "expr_nest_max", CTLTYPE_INT }, \ 568 { "line_max", CTLTYPE_INT }, \ 569 { "re_dup_max", CTLTYPE_INT }, \ 570 { "posix2_version", CTLTYPE_INT }, \ 571 { "posix2_c_bind", CTLTYPE_INT }, \ 572 { "posix2_c_dev", CTLTYPE_INT }, \ 573 { "posix2_char_term", CTLTYPE_INT }, \ 574 { "posix2_fort_dev", CTLTYPE_INT }, \ 575 { "posix2_fort_run", CTLTYPE_INT }, \ 576 { "posix2_localedef", CTLTYPE_INT }, \ 577 { "posix2_sw_dev", CTLTYPE_INT }, \ 578 { "posix2_upe", CTLTYPE_INT }, \ 579 { "stream_max", CTLTYPE_INT }, \ 580 { "tzname_max", CTLTYPE_INT }, \ 581 } 582 583 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 584 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 585 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 586 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 587 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 588 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 589 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 590 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 591 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 592 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 593 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 594 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 595 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 596 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 597 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 598 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 599 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 600 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 601 #define CTL_P1003_1B_UNUSED1 19 /* int */ 602 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 603 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 604 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 605 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 606 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 607 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 608 609 #define CTL_P1003_1B_MAXID 26 610 611 #define CTL_P1003_1B_NAMES { \ 612 { 0, 0 }, \ 613 { "asynchronous_io", CTLTYPE_INT }, \ 614 { "mapped_files", CTLTYPE_INT }, \ 615 { "memlock", CTLTYPE_INT }, \ 616 { "memlock_range", CTLTYPE_INT }, \ 617 { "memory_protection", CTLTYPE_INT }, \ 618 { "message_passing", CTLTYPE_INT }, \ 619 { "prioritized_io", CTLTYPE_INT }, \ 620 { "priority_scheduling", CTLTYPE_INT }, \ 621 { "realtime_signals", CTLTYPE_INT }, \ 622 { "semaphores", CTLTYPE_INT }, \ 623 { "fsync", CTLTYPE_INT }, \ 624 { "shared_memory_objects", CTLTYPE_INT }, \ 625 { "synchronized_io", CTLTYPE_INT }, \ 626 { "timers", CTLTYPE_INT }, \ 627 { "aio_listio_max", CTLTYPE_INT }, \ 628 { "aio_max", CTLTYPE_INT }, \ 629 { "aio_prio_delta_max", CTLTYPE_INT }, \ 630 { "delaytimer_max", CTLTYPE_INT }, \ 631 { "unused1", CTLTYPE_INT }, \ 632 { "pagesize", CTLTYPE_INT }, \ 633 { "rtsig_max", CTLTYPE_INT }, \ 634 { "nsems_max", CTLTYPE_INT }, \ 635 { "sem_value_max", CTLTYPE_INT }, \ 636 { "sigqueue_max", CTLTYPE_INT }, \ 637 { "timer_max", CTLTYPE_INT }, \ 638 } 639 640 #ifdef _KERNEL 641 642 /* 643 * Declare some common oids. 644 */ 645 extern struct sysctl_oid_list sysctl__children; 646 SYSCTL_DECL(_kern); 647 SYSCTL_DECL(_sysctl); 648 SYSCTL_DECL(_vm); 649 SYSCTL_DECL(_vfs); 650 SYSCTL_DECL(_net); 651 SYSCTL_DECL(_debug); 652 SYSCTL_DECL(_debug_sizeof); 653 SYSCTL_DECL(_dev); 654 SYSCTL_DECL(_hw); 655 SYSCTL_DECL(_hw_bus); 656 SYSCTL_DECL(_machdep); 657 SYSCTL_DECL(_user); 658 SYSCTL_DECL(_compat); 659 SYSCTL_DECL(_lwkt); 660 SYSCTL_DECL(_security); 661 662 /* 663 * Common second-level oids. 664 */ 665 SYSCTL_DECL(_kern_ipc); 666 667 extern char machine[]; 668 extern char osrelease[]; 669 extern char ostype[]; 670 extern char kern_ident[]; 671 672 /* Dynamic oid handling */ 673 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 674 struct sysctl_oid_list *parent, int nbr, const char *name, 675 int kind, void *arg1, int arg2, 676 int (*handler) (SYSCTL_HANDLER_ARGS), 677 const char *fmt, const char *descr); 678 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 679 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 680 int recurse); 681 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 682 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 683 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 684 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 685 struct sysctl_oid *oidp); 686 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 687 struct sysctl_oid *oidp); 688 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 689 struct sysctl_oid *oidp); 690 691 int kernel_sysctl(int *name, u_int namelen, void *old, 692 size_t *oldlenp, void *new, size_t newlen, 693 size_t *retval); 694 int kernel_sysctlbyname(char *name, 695 void *old, size_t *oldlenp, void *new, size_t newlen, 696 size_t *retval); 697 int userland_sysctl(int *name, u_int namelen, void *old, 698 size_t *oldlenp, int inkernel, void *new, size_t newlen, 699 size_t *retval); 700 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 701 int *nindx, struct sysctl_req *req); 702 703 int sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high); 704 void _sysctl_xlock(void); 705 void _sysctl_xunlock(void); 706 707 struct sbuf; 708 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 709 struct sysctl_req *); 710 711 #endif /* _KERNEL */ 712 713 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL) 714 715 #include <sys/cdefs.h> 716 717 __BEGIN_DECLS 718 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 719 int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 720 int sysctlnametomib (const char *, int *, size_t *); 721 __END_DECLS 722 723 #endif /* _KERNEL && _KERNEL_VIRTUAL */ 724 725 #endif /* !_SYS_SYSCTL_H_ */ 726