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. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93 37 * $FreeBSD: head/sys/sys/sysctl.h 204170 2010-02-21 13:57:02Z ed $ 38 */ 39 40 #ifndef _SYS_SYSCTL_H_ 41 #define _SYS_SYSCTL_H_ 42 43 #ifndef _SYS_TYPES_H_ 44 #include <sys/types.h> 45 #endif 46 #ifndef _SYS_QUEUE_H_ 47 #include <sys/queue.h> 48 #endif 49 50 /* 51 * Definitions for sysctl call. The sysctl call uses a hierarchical name 52 * for objects that can be examined or modified. The name is expressed as 53 * a sequence of integers. Like a file path name, the meaning of each 54 * component depends on its place in the hierarchy. The top-level and kern 55 * identifiers are defined here, and other identifiers are defined in the 56 * respective subsystem header files. 57 */ 58 59 #define CTL_MAXNAME 12 /* largest number of components supported */ 60 61 /* 62 * Each subsystem defined by sysctl defines a list of variables 63 * for that subsystem. Each name is either a node with further 64 * levels defined below it, or it is a leaf of some particular 65 * type given below. Each sysctl level defines a set of name/type 66 * pairs to be used by sysctl(1) in manipulating the subsystem. 67 */ 68 struct ctlname { 69 char *ctl_name; /* subsystem name */ 70 int ctl_type; /* type of name */ 71 }; 72 73 #define CTLTYPE 0xf /* Mask for the type */ 74 #define CTLTYPE_NODE 1 /* name is a node */ 75 #define CTLTYPE_INT 2 /* name describes an integer */ 76 #define CTLTYPE_STRING 3 /* name describes a string */ 77 #define CTLTYPE_QUAD 4 /* name describes a 64-bit number */ 78 #define CTLTYPE_OPAQUE 5 /* name describes a structure */ 79 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */ 80 #define CTLTYPE_UINT 6 /* name describes an unsigned integer */ 81 #define CTLTYPE_LONG 7 /* name describes a long */ 82 #define CTLTYPE_ULONG 8 /* name describes an unsigned long */ 83 #define CTLTYPE_UQUAD 9 /* name describes an unsigned 64-bit number */ 84 85 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 86 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 87 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 88 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */ 89 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */ 90 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */ 91 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */ 92 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */ 93 #define CTLMASK_SECURE 0x00F00000 /* Secure level */ 94 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */ 95 #define CTLFLAG_SHLOCK 0x00008000 /* shlock on write (def is exlock) */ 96 #define CTLFLAG_EXLOCK 0x00004000 /* exlock on read (def is shlock) */ 97 #define CTLMASK_TYPE 0x0000000F /* type field */ 98 99 /* 100 * USE THIS instead of a hardwired number from the categories below 101 * to get dynamically assigned sysctl entries using the linker-set 102 * technology. This is the way nearly all new sysctl variables should 103 * be implemented. 104 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, ""); 105 */ 106 #define OID_AUTO (-1) 107 108 #ifdef _KERNEL 109 110 #include <sys/kernel.h> /* for DATA_SET */ 111 #ifndef _SYS_LOCK_H_ 112 #include <sys/lock.h> 113 #endif 114 115 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \ 116 struct sysctl_req *req 117 118 /* 119 * This describes the access space for a sysctl request. This is needed 120 * so that we can use the interface from the kernel or from user-space. 121 */ 122 struct sysctl_req { 123 struct thread *td; /* used for access checking */ 124 int lock; /* wiring state */ 125 void *oldptr; 126 size_t oldlen; 127 size_t oldidx; 128 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 129 void *newptr; 130 size_t newlen; 131 size_t newidx; 132 int (*newfunc)(struct sysctl_req *, void *, size_t); 133 size_t validlen; 134 int flags; 135 }; 136 137 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 138 139 /* 140 * This describes one "oid" in the MIB tree. Potentially more nodes can 141 * be hidden behind it, expanded by the handler. 142 */ 143 struct sysctl_oid { 144 struct sysctl_oid_list *oid_parent; 145 SLIST_ENTRY(sysctl_oid) oid_link; 146 int oid_number; 147 int oid_kind; 148 void *oid_arg1; 149 int oid_arg2; 150 const char *oid_name; 151 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 152 const char *oid_fmt; 153 int oid_refcnt; 154 u_int oid_running; 155 const char *oid_descr; 156 struct lock oid_lock; /* per-node lock */ 157 }; 158 159 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 160 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 161 162 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 163 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 164 int sysctl_handle_quad(SYSCTL_HANDLER_ARGS); 165 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS); 166 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 167 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 168 169 extern struct lock sysctllock; 170 171 #define SYSCTL_XLOCK() lockmgr(&sysctllock, LK_EXCLUSIVE) 172 #define SYSCTL_XUNLOCK() lockmgr(&sysctllock, LK_RELEASE) 173 #define SYSCTL_SLOCK() lockmgr(&sysctllock, LK_SHARED) 174 #define SYSCTL_SUNLOCK() lockmgr(&sysctllock, LK_RELEASE) 175 #define SYSCTL_ASSERT_LOCKED() \ 176 KKASSERT(lockstatus(&sysctllock, curthread) != 0) 177 178 /* 179 * These functions are used to add/remove an oid from the mib. 180 */ 181 void sysctl_register_oid(struct sysctl_oid *oidp); 182 void sysctl_unregister_oid(struct sysctl_oid *oidp); 183 184 /* Declare a static oid to allow child oids to be added to it. */ 185 #define SYSCTL_DECL(name) \ 186 extern struct sysctl_oid_list sysctl_##name##_children 187 188 /* Hide these in macros */ 189 #define SYSCTL_SET_CHILDREN(oid_ptr, children) do { \ 190 (oid_ptr)->oid_arg1 = (children); \ 191 } while(0) 192 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 193 (oid_ptr)->oid_arg1 194 #define SYSCTL_STATIC_CHILDREN(oid_name) \ 195 (&sysctl_##oid_name##_children) 196 197 /* === Structs and macros related to context handling === */ 198 199 /* All dynamically created sysctls can be tracked in a context list. */ 200 struct sysctl_ctx_entry { 201 struct sysctl_oid *entry; 202 TAILQ_ENTRY(sysctl_ctx_entry) link; 203 }; 204 205 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); 206 207 #define SYSCTL_NODE_CHILDREN(parent, name) \ 208 sysctl_##parent##_##name##_children 209 210 #ifndef NO_SYSCTL_DESCR 211 #define __DESCR(d) d 212 #else 213 #define __DESCR(d) "" 214 #endif 215 216 /* This constructs a "raw" MIB oid. */ 217 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr)\ 218 static struct sysctl_oid sysctl__##parent##_##name = { \ 219 &sysctl_##parent##_children, \ 220 { NULL }, \ 221 nbr, \ 222 kind, \ 223 a1, \ 224 a2, \ 225 #name, \ 226 handler, \ 227 fmt, \ 228 0, \ 229 0, \ 230 __DESCR(descr) \ 231 }; \ 232 DATA_SET(sysctl_set, sysctl__##parent##_##name) 233 234 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 235 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr); 236 237 /* This constructs a node from which other oids can hang. */ 238 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 239 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 240 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 241 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "N", descr) 242 243 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 244 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 245 0, 0, handler, "N", descr) 246 247 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 248 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 249 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 250 arg, len, sysctl_handle_string, "A", descr) 251 252 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 253 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 254 arg, len, sysctl_handle_string, "A", descr) 255 256 /* Oid for an int. If ptr is NULL, val is returned. */ 257 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 258 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|(access), \ 259 ptr, val, sysctl_handle_int, "I", descr) 260 261 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 262 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|(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, CTLTYPE_QUAD|(access), \ 268 ptr, val, sysctl_handle_quad, "Q", descr) 269 270 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, val, descr) \ 271 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_QUAD|(access), \ 272 ptr, val, sysctl_handle_quad, "Q", descr) 273 274 /* Oid for an unsigned quad. If ptr is NULL, val is returned. */ 275 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \ 276 SYSCTL_OID(parent, nbr, name, CTLTYPE_UQUAD|(access), \ 277 ptr, val, sysctl_handle_quad, "QU", descr) 278 279 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, val, descr) \ 280 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UQUAD|(access), \ 281 ptr, val, sysctl_handle_quad, "QU", descr) 282 283 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 284 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 285 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \ 286 ptr, val, sysctl_handle_int, "IU", descr) 287 288 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 289 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access), \ 290 ptr, val, sysctl_handle_int, "IU", descr) 291 292 /* Oid for a long. The pointer must be non NULL. */ 293 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 294 SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|(access), \ 295 ptr, val, sysctl_handle_long, "L", descr) 296 297 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 298 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|(access), \ 299 ptr, 0, sysctl_handle_long, "L", descr) 300 301 /* Oid for a long. The pointer must be non NULL. */ 302 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 303 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \ 304 ptr, val, sysctl_handle_long, "LU", descr) 305 306 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 307 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access), \ 308 ptr, 0, sysctl_handle_long, "LU", descr) 309 310 /* Oid for an opaque object. Specified by a pointer and a length. */ 311 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 312 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 313 ptr, len, sysctl_handle_opaque, fmt, descr) 314 315 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \ 316 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 317 ptr, len, sysctl_handle_opaque, fmt, descr) 318 319 /* Oid for a struct. Specified by a pointer and a type. */ 320 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 321 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 322 ptr, sizeof(struct type), sysctl_handle_opaque, \ 323 "S," #type, descr) 324 325 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 326 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 327 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr) 328 329 /* Oid for a procedure. Specified by a pointer and an arg. */ 330 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 331 SYSCTL_OID(parent, nbr, name, (access), \ 332 ptr, arg, handler, fmt, descr) 333 334 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 335 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 336 ptr, arg, handler, fmt, descr) 337 338 #endif /* _KERNEL */ 339 340 /* 341 * Top-level identifiers 342 */ 343 #define CTL_UNSPEC 0 /* unused */ 344 #define CTL_KERN 1 /* "high kernel": proc, limits */ 345 #define CTL_VM 2 /* virtual memory */ 346 #define CTL_VFS 3 /* file system, mount type is next */ 347 #define CTL_NET 4 /* network, see socket.h */ 348 #define CTL_DEBUG 5 /* debugging parameters */ 349 #define CTL_HW 6 /* generic cpu/io */ 350 #define CTL_MACHDEP 7 /* machine dependent */ 351 #define CTL_USER 8 /* user-level */ 352 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 353 #define CTL_LWKT 10 /* light weight kernel threads */ 354 #define CTL_MAXID 11 /* number of valid top-level ids */ 355 356 #define CTL_NAMES { \ 357 { 0, 0 }, \ 358 { "kern", CTLTYPE_NODE }, \ 359 { "vm", CTLTYPE_NODE }, \ 360 { "vfs", CTLTYPE_NODE }, \ 361 { "net", CTLTYPE_NODE }, \ 362 { "debug", CTLTYPE_NODE }, \ 363 { "hw", CTLTYPE_NODE }, \ 364 { "machdep", CTLTYPE_NODE }, \ 365 { "user", CTLTYPE_NODE }, \ 366 { "p1003_1b", CTLTYPE_NODE }, \ 367 { "lwkt", CTLTYPE_NODE }, \ 368 } 369 370 /* 371 * CTL_KERN identifiers 372 */ 373 #define KERN_OSTYPE 1 /* string: system version */ 374 #define KERN_OSRELEASE 2 /* string: system release */ 375 #define KERN_OSREV 3 /* int: system revision */ 376 #define KERN_VERSION 4 /* string: compile time info */ 377 #define KERN_MAXVNODES 5 /* int: max vnodes */ 378 #define KERN_MAXPROC 6 /* int: max processes */ 379 #define KERN_MAXFILES 7 /* int: max open files */ 380 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 381 #define KERN_SECURELVL 9 /* int: system security level */ 382 #define KERN_HOSTNAME 10 /* string: hostname */ 383 #define KERN_HOSTID 11 /* int: host identifier */ 384 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 385 #define KERN_VNODE 13 /* struct: vnode structures */ 386 #define KERN_PROC 14 /* struct: process entries */ 387 #define KERN_FILE 15 /* struct: file entries */ 388 #define KERN_PROF 16 /* node: kernel profiling info */ 389 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 390 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 391 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 392 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 393 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 394 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 395 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 396 #define KERN_OSRELDATE 24 /* int: OS release date */ 397 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 398 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 399 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 400 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 401 #define KERN_DUMPDEV 29 /* udev_t: device to dump on */ 402 #define KERN_IPC 30 /* node: anything related to IPC */ 403 #define KERN_DUMMY 31 /* unused */ 404 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 405 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 406 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 407 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 408 #define KERN_MAXPOSIXLOCKSPERUID 36 /* int: max POSIX locks per uid */ 409 #define KERN_MAXID 37 /* number of valid kern ids */ 410 411 #define CTL_KERN_NAMES { \ 412 { 0, 0 }, \ 413 { "ostype", CTLTYPE_STRING }, \ 414 { "osrelease", CTLTYPE_STRING }, \ 415 { "osrevision", CTLTYPE_INT }, \ 416 { "version", CTLTYPE_STRING }, \ 417 { "maxvnodes", CTLTYPE_INT }, \ 418 { "maxproc", CTLTYPE_INT }, \ 419 { "maxfiles", CTLTYPE_INT }, \ 420 { "argmax", CTLTYPE_INT }, \ 421 { "securelevel", CTLTYPE_INT }, \ 422 { "hostname", CTLTYPE_STRING }, \ 423 { "hostid", CTLTYPE_UINT }, \ 424 { "clockrate", CTLTYPE_STRUCT }, \ 425 { "vnode", CTLTYPE_STRUCT }, \ 426 { "proc", CTLTYPE_STRUCT }, \ 427 { "file", CTLTYPE_STRUCT }, \ 428 { "profiling", CTLTYPE_NODE }, \ 429 { "posix1version", CTLTYPE_INT }, \ 430 { "ngroups", CTLTYPE_INT }, \ 431 { "job_control", CTLTYPE_INT }, \ 432 { "saved_ids", CTLTYPE_INT }, \ 433 { "boottime", CTLTYPE_STRUCT }, \ 434 { "nisdomainname", CTLTYPE_STRING }, \ 435 { "update", CTLTYPE_INT }, \ 436 { "osreldate", CTLTYPE_INT }, \ 437 { "ntp_pll", CTLTYPE_NODE }, \ 438 { "bootfile", CTLTYPE_STRING }, \ 439 { "maxfilesperproc", CTLTYPE_INT }, \ 440 { "maxprocperuid", CTLTYPE_INT }, \ 441 { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \ 442 { "ipc", CTLTYPE_NODE }, \ 443 { "dummy", CTLTYPE_INT }, \ 444 { "ps_strings", CTLTYPE_INT }, \ 445 { "usrstack", CTLTYPE_INT }, \ 446 { "logsigexit", CTLTYPE_INT }, \ 447 { "iov_max", CTLTYPE_INT }, \ 448 { "maxposixlocksperuid", CTLTYPE_INT }, \ 449 } 450 451 /* 452 * CTL_VFS identifiers 453 */ 454 #define CTL_VFS_NAMES { \ 455 { "vfsconf", CTLTYPE_STRUCT }, \ 456 } 457 458 /* 459 * KERN_PROC subtypes 460 */ 461 #define KERN_PROC_ALL 0 /* everything */ 462 #define KERN_PROC_PID 1 /* by process id */ 463 #define KERN_PROC_PGRP 2 /* by process group id */ 464 #define KERN_PROC_SESSION 3 /* by session of pid */ 465 #define KERN_PROC_TTY 4 /* by controlling tty */ 466 #define KERN_PROC_UID 5 /* by effective uid */ 467 #define KERN_PROC_RUID 6 /* by real uid */ 468 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 469 #define KERN_PROC_CWD 8 /* get cwd */ 470 #define KERN_PROC_PATHNAME 9 /* path to executable */ 471 472 473 #define KERN_PROC_FLAGMASK 0x10 474 #define KERN_PROC_FLAG_LWP 0x10 475 476 /* 477 * KERN_IPC identifiers 478 */ 479 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 480 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 481 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 482 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 483 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 484 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 485 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 486 #define KIPC_MBSTAT 8 /* struct: mbuf usage statistics */ 487 #define KIPC_NMBCLUSTERS 9 /* int: maximum mbuf clusters */ 488 489 /* 490 * CTL_HW identifiers 491 */ 492 #define HW_MACHINE 1 /* string: machine class */ 493 #define HW_MODEL 2 /* string: specific machine model */ 494 #define HW_NCPU 3 /* int: number of cpus */ 495 #define HW_BYTEORDER 4 /* int: machine byte order */ 496 #define HW_PHYSMEM 5 /* int: total memory */ 497 #define HW_USERMEM 6 /* int: non-kernel memory */ 498 #define HW_PAGESIZE 7 /* int: software page size */ 499 #define HW_DISKNAMES 8 /* strings: disk drive names */ 500 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 501 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 502 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 503 #define HW_MACHINE_PLATFORM 12 /* string: platform architecture */ 504 #define HW_SENSORS 13 /* node: hardware sensors */ 505 #define HW_MAXID 14 /* number of valid hw ids */ 506 507 #define CTL_HW_NAMES { \ 508 { 0, 0 }, \ 509 { "machine", CTLTYPE_STRING }, \ 510 { "model", CTLTYPE_STRING }, \ 511 { "ncpu", CTLTYPE_INT }, \ 512 { "byteorder", CTLTYPE_INT }, \ 513 { "physmem", CTLTYPE_ULONG }, \ 514 { "usermem", CTLTYPE_UINT }, \ 515 { "pagesize", CTLTYPE_INT }, \ 516 { "disknames", CTLTYPE_STRUCT }, \ 517 { "diskstats", CTLTYPE_STRUCT }, \ 518 { "floatingpoint", CTLTYPE_INT }, \ 519 { "arch", CTLTYPE_STRING }, \ 520 { "platform", CTLTYPE_STRING }, \ 521 { "sensors", CTLTYPE_NODE }, \ 522 } 523 524 /* 525 * CTL_USER definitions 526 */ 527 #define USER_CS_PATH 1 /* string: _CS_PATH */ 528 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 529 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 530 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 531 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 532 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 533 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 534 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 535 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 536 #define USER_POSIX2_VERSION 10 /* int: _POSIX2_VERSION */ 537 #define USER_POSIX2_C_BIND 11 /* int: _POSIX2_C_BIND */ 538 #define USER_POSIX2_C_DEV 12 /* int: _POSIX2_C_DEV */ 539 #define USER_POSIX2_CHAR_TERM 13 /* int: _POSIX2_CHAR_TERM */ 540 #define USER_POSIX2_FORT_DEV 14 /* int: _POSIX2_FORT_DEV */ 541 #define USER_POSIX2_FORT_RUN 15 /* int: _POSIX2_FORT_RUN */ 542 #define USER_POSIX2_LOCALEDEF 16 /* int: _POSIX2_LOCALEDEF */ 543 #define USER_POSIX2_SW_DEV 17 /* int: _POSIX2_SW_DEV */ 544 #define USER_POSIX2_UPE 18 /* int: _POSIX2_UPE */ 545 #define USER_STREAM_MAX 19 /* int: _POSIX2_STREAM_MAX */ 546 #define USER_TZNAME_MAX 20 /* int: _POSIX2_TZNAME_MAX */ 547 #define USER_MAXID 21 /* number of valid user ids */ 548 549 #define CTL_USER_NAMES { \ 550 { 0, 0 }, \ 551 { "cs_path", CTLTYPE_STRING }, \ 552 { "bc_base_max", CTLTYPE_INT }, \ 553 { "bc_dim_max", CTLTYPE_INT }, \ 554 { "bc_scale_max", CTLTYPE_INT }, \ 555 { "bc_string_max", CTLTYPE_INT }, \ 556 { "coll_weights_max", CTLTYPE_INT }, \ 557 { "expr_nest_max", CTLTYPE_INT }, \ 558 { "line_max", CTLTYPE_INT }, \ 559 { "re_dup_max", CTLTYPE_INT }, \ 560 { "posix2_version", CTLTYPE_INT }, \ 561 { "posix2_c_bind", CTLTYPE_INT }, \ 562 { "posix2_c_dev", CTLTYPE_INT }, \ 563 { "posix2_char_term", CTLTYPE_INT }, \ 564 { "posix2_fort_dev", CTLTYPE_INT }, \ 565 { "posix2_fort_run", CTLTYPE_INT }, \ 566 { "posix2_localedef", CTLTYPE_INT }, \ 567 { "posix2_sw_dev", CTLTYPE_INT }, \ 568 { "posix2_upe", CTLTYPE_INT }, \ 569 { "stream_max", CTLTYPE_INT }, \ 570 { "tzname_max", CTLTYPE_INT }, \ 571 } 572 573 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 574 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 575 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 576 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 577 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 578 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 579 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 580 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 581 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 582 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 583 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 584 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 585 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 586 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 587 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 588 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 589 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 590 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 591 #define CTL_P1003_1B_UNUSED1 19 /* int */ 592 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 593 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 594 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 595 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 596 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 597 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 598 599 #define CTL_P1003_1B_MAXID 26 600 601 #define CTL_P1003_1B_NAMES { \ 602 { 0, 0 }, \ 603 { "asynchronous_io", CTLTYPE_INT }, \ 604 { "mapped_files", CTLTYPE_INT }, \ 605 { "memlock", CTLTYPE_INT }, \ 606 { "memlock_range", CTLTYPE_INT }, \ 607 { "memory_protection", CTLTYPE_INT }, \ 608 { "message_passing", CTLTYPE_INT }, \ 609 { "prioritized_io", CTLTYPE_INT }, \ 610 { "priority_scheduling", CTLTYPE_INT }, \ 611 { "realtime_signals", CTLTYPE_INT }, \ 612 { "semaphores", CTLTYPE_INT }, \ 613 { "fsync", CTLTYPE_INT }, \ 614 { "shared_memory_objects", CTLTYPE_INT }, \ 615 { "synchronized_io", CTLTYPE_INT }, \ 616 { "timers", CTLTYPE_INT }, \ 617 { "aio_listio_max", CTLTYPE_INT }, \ 618 { "aio_max", CTLTYPE_INT }, \ 619 { "aio_prio_delta_max", CTLTYPE_INT }, \ 620 { "delaytimer_max", CTLTYPE_INT }, \ 621 { "unused1", CTLTYPE_INT }, \ 622 { "pagesize", CTLTYPE_INT }, \ 623 { "rtsig_max", CTLTYPE_INT }, \ 624 { "nsems_max", CTLTYPE_INT }, \ 625 { "sem_value_max", CTLTYPE_INT }, \ 626 { "sigqueue_max", CTLTYPE_INT }, \ 627 { "timer_max", CTLTYPE_INT }, \ 628 } 629 630 #ifdef _KERNEL 631 632 /* 633 * Declare some common oids. 634 */ 635 extern struct sysctl_oid_list sysctl__children; 636 SYSCTL_DECL(_kern); 637 SYSCTL_DECL(_sysctl); 638 SYSCTL_DECL(_vm); 639 SYSCTL_DECL(_vfs); 640 SYSCTL_DECL(_net); 641 SYSCTL_DECL(_debug); 642 SYSCTL_DECL(_debug_sizeof); 643 SYSCTL_DECL(_dev); 644 SYSCTL_DECL(_hw); 645 SYSCTL_DECL(_hw_bus); 646 SYSCTL_DECL(_machdep); 647 SYSCTL_DECL(_user); 648 SYSCTL_DECL(_compat); 649 SYSCTL_DECL(_lwkt); 650 SYSCTL_DECL(_security); 651 SYSCTL_DECL(_dsched); 652 653 /* 654 * Common second-level oids. 655 */ 656 SYSCTL_DECL(_kern_ipc); 657 658 extern char machine[]; 659 extern char osrelease[]; 660 extern char ostype[]; 661 extern char kern_ident[]; 662 663 /* Dynamic oid handling */ 664 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 665 struct sysctl_oid_list *parent, int nbr, const char *name, 666 int kind, void *arg1, int arg2, 667 int (*handler) (SYSCTL_HANDLER_ARGS), 668 const char *fmt, const char *descr); 669 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name); 670 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del, 671 int recurse); 672 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 673 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 674 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 675 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 676 struct sysctl_oid *oidp); 677 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 678 struct sysctl_oid *oidp); 679 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 680 struct sysctl_oid *oidp); 681 682 int kernel_sysctl(int *name, u_int namelen, void *old, 683 size_t *oldlenp, void *new, size_t newlen, 684 size_t *retval); 685 int kernel_sysctlbyname(char *name, 686 void *old, size_t *oldlenp, void *new, size_t newlen, 687 size_t *retval); 688 int userland_sysctl(int *name, u_int namelen, void *old, 689 size_t *oldlenp, int inkernel, void *new, size_t newlen, 690 size_t *retval); 691 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 692 int *nindx, struct sysctl_req *req); 693 694 int sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high); 695 696 struct sbuf; 697 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int, 698 struct sysctl_req *); 699 700 #endif /* _KERNEL */ 701 702 #if !defined(_KERNEL) || defined(_KERNEL_VIRTUAL) 703 704 #include <sys/cdefs.h> 705 706 __BEGIN_DECLS 707 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t); 708 int sysctlbyname(const char *, void *, size_t *, const void *, size_t); 709 int sysctlnametomib (const char *, int *, size_t *); 710 __END_DECLS 711 712 #endif /* _KERNEL && _KERNEL_VIRTUAL */ 713 714 #endif /* !_SYS_SYSCTL_H_ */ 715