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