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_QUAD 4 /* name describes a 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 76 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */ 77 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */ 78 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR) 79 #define CTLFLAG_NOLOCK 0x20000000 /* XXX Don't Lock */ 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_RDTUN (CTLFLAG_RD|CTLFLAG_TUN) 88 89 /* 90 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1. 91 * 92 * Secure when the securelevel is raised to at least N. 93 */ 94 #define CTLSHIFT_SECURE 20 95 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE)) 96 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE)) 97 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE)) 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 /* 109 * The starting number for dynamically-assigned entries. WARNING! 110 * ALL static sysctl entries should have numbers LESS than this! 111 */ 112 #define CTL_AUTO_START 0x100 113 114 #ifdef _KERNEL 115 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \ 116 struct sysctl_req *req 117 118 /* definitions for sysctl_req 'lock' member */ 119 #define REQ_UNLOCKED 0 /* not locked and not wired */ 120 #define REQ_LOCKED 1 /* locked and not wired */ 121 #define REQ_WIRED 2 /* locked and wired */ 122 123 /* definitions for sysctl_req 'flags' member */ 124 #if defined(__amd64__) || defined(__ia64__) 125 #define SCTL_MASK32 1 /* 32 bit emulation */ 126 #endif 127 128 /* 129 * This describes the access space for a sysctl request. This is needed 130 * so that we can use the interface from the kernel or from user-space. 131 */ 132 struct sysctl_req { 133 struct thread *td; /* used for access checking */ 134 int lock; /* locking/wiring state */ 135 void *oldptr; 136 size_t oldlen; 137 size_t oldidx; 138 int (*oldfunc)(struct sysctl_req *, const void *, size_t); 139 void *newptr; 140 size_t newlen; 141 size_t newidx; 142 int (*newfunc)(struct sysctl_req *, void *, size_t); 143 size_t validlen; 144 int flags; 145 }; 146 147 SLIST_HEAD(sysctl_oid_list, sysctl_oid); 148 149 /* 150 * This describes one "oid" in the MIB tree. Potentially more nodes can 151 * be hidden behind it, expanded by the handler. 152 */ 153 struct sysctl_oid { 154 struct sysctl_oid_list *oid_parent; 155 SLIST_ENTRY(sysctl_oid) oid_link; 156 int oid_number; 157 u_int oid_kind; 158 void *oid_arg1; 159 int oid_arg2; 160 const char *oid_name; 161 int (*oid_handler)(SYSCTL_HANDLER_ARGS); 162 const char *oid_fmt; 163 int oid_refcnt; 164 const char *oid_descr; 165 }; 166 167 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l) 168 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l) 169 170 int sysctl_handle_int(SYSCTL_HANDLER_ARGS); 171 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS); 172 int sysctl_handle_long(SYSCTL_HANDLER_ARGS); 173 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS); 174 int sysctl_handle_string(SYSCTL_HANDLER_ARGS); 175 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS); 176 177 /* 178 * These functions are used to add/remove an oid from the mib. 179 */ 180 void sysctl_register_oid(struct sysctl_oid *oidp); 181 void sysctl_unregister_oid(struct sysctl_oid *oidp); 182 183 /* Declare a static oid to allow child oids to be added to it. */ 184 #define SYSCTL_DECL(name) \ 185 extern struct sysctl_oid_list sysctl_##name##_children 186 187 /* Hide these in macros */ 188 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \ 189 (oid_ptr)->oid_arg1 190 #define SYSCTL_CHILDREN_SET(oid_ptr, val) \ 191 (oid_ptr)->oid_arg1 = (val); 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 /* This constructs a "raw" MIB oid. */ 209 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 210 static struct sysctl_oid sysctl__##parent##_##name = { \ 211 &sysctl_##parent##_children, { 0 }, \ 212 nbr, kind, a1, a2, #name, handler, fmt, 0, descr }; \ 213 DATA_SET(sysctl_set, sysctl__##parent##_##name) 214 215 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \ 216 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) 217 218 /* This constructs a node from which other oids can hang. */ 219 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \ 220 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \ 221 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \ 222 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, \ 223 "N", descr) 224 225 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \ 226 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \ 227 0, 0, handler, "N", descr) 228 229 /* Oid for a string. len can be 0 to indicate '\0' termination. */ 230 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \ 231 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ 232 arg, len, sysctl_handle_string, "A", descr) 233 234 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \ 235 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ 236 arg, len, sysctl_handle_string, "A", descr) 237 238 /* Oid for an int. If ptr is NULL, val is returned. */ 239 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \ 240 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|(access), \ 241 ptr, val, sysctl_handle_int, "I", descr) 242 243 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \ 244 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|(access), \ 245 ptr, val, sysctl_handle_int, "I", descr) 246 247 /* Oid for an unsigned int. If ptr is NULL, val is returned. */ 248 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \ 249 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \ 250 ptr, val, sysctl_handle_int, "IU", descr) 251 252 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \ 253 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access), \ 254 ptr, val, sysctl_handle_int, "IU", descr) 255 256 /* Oid for a long. The pointer must be non NULL. */ 257 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \ 258 SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|(access), \ 259 ptr, val, sysctl_handle_long, "L", descr) 260 261 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \ 262 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|(access), \ 263 ptr, 0, sysctl_handle_long, "L", descr) 264 265 /* Oid for an unsigned long. The pointer must be non NULL. */ 266 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \ 267 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \ 268 ptr, val, sysctl_handle_long, "LU", descr) 269 270 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \ 271 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access), \ 272 ptr, 0, sysctl_handle_long, "LU", descr) 273 274 /* Oid for an opaque object. Specified by a pointer and a length. */ 275 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \ 276 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 277 ptr, len, sysctl_handle_opaque, fmt, descr) 278 279 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\ 280 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 281 ptr, len, sysctl_handle_opaque, fmt, descr) 282 283 /* Oid for a struct. Specified by a pointer and a type. */ 284 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \ 285 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 286 ptr, sizeof(struct type), sysctl_handle_opaque, \ 287 "S," #type, descr) 288 289 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \ 290 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \ 291 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr) 292 293 /* Oid for a procedure. Specified by a pointer and an arg. */ 294 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 295 SYSCTL_OID(parent, nbr, name, (access), \ 296 ptr, arg, handler, fmt, descr) 297 298 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \ 299 sysctl_add_oid(ctx, parent, nbr, name, (access), \ 300 ptr, arg, handler, fmt, descr) 301 302 #endif /* _KERNEL */ 303 304 /* 305 * Top-level identifiers 306 */ 307 #define CTL_UNSPEC 0 /* unused */ 308 #define CTL_KERN 1 /* "high kernel": proc, limits */ 309 #define CTL_VM 2 /* virtual memory */ 310 #define CTL_VFS 3 /* filesystem, mount type is next */ 311 #define CTL_NET 4 /* network, see socket.h */ 312 #define CTL_DEBUG 5 /* debugging parameters */ 313 #define CTL_HW 6 /* generic cpu/io */ 314 #define CTL_MACHDEP 7 /* machine dependent */ 315 #define CTL_USER 8 /* user-level */ 316 #define CTL_P1003_1B 9 /* POSIX 1003.1B */ 317 #define CTL_MAXID 10 /* number of valid top-level ids */ 318 319 #define CTL_NAMES { \ 320 { 0, 0 }, \ 321 { "kern", CTLTYPE_NODE }, \ 322 { "vm", CTLTYPE_NODE }, \ 323 { "vfs", CTLTYPE_NODE }, \ 324 { "net", CTLTYPE_NODE }, \ 325 { "debug", CTLTYPE_NODE }, \ 326 { "hw", CTLTYPE_NODE }, \ 327 { "machdep", CTLTYPE_NODE }, \ 328 { "user", CTLTYPE_NODE }, \ 329 { "p1003_1b", CTLTYPE_NODE }, \ 330 } 331 332 /* 333 * CTL_KERN identifiers 334 */ 335 #define KERN_OSTYPE 1 /* string: system version */ 336 #define KERN_OSRELEASE 2 /* string: system release */ 337 #define KERN_OSREV 3 /* int: system revision */ 338 #define KERN_VERSION 4 /* string: compile time info */ 339 #define KERN_MAXVNODES 5 /* int: max vnodes */ 340 #define KERN_MAXPROC 6 /* int: max processes */ 341 #define KERN_MAXFILES 7 /* int: max open files */ 342 #define KERN_ARGMAX 8 /* int: max arguments to exec */ 343 #define KERN_SECURELVL 9 /* int: system security level */ 344 #define KERN_HOSTNAME 10 /* string: hostname */ 345 #define KERN_HOSTID 11 /* int: host identifier */ 346 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */ 347 #define KERN_VNODE 13 /* struct: vnode structures */ 348 #define KERN_PROC 14 /* struct: process entries */ 349 #define KERN_FILE 15 /* struct: file entries */ 350 #define KERN_PROF 16 /* node: kernel profiling info */ 351 #define KERN_POSIX1 17 /* int: POSIX.1 version */ 352 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */ 353 #define KERN_JOB_CONTROL 19 /* int: is job control available */ 354 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */ 355 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */ 356 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */ 357 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */ 358 #define KERN_OSRELDATE 24 /* int: kernel release date */ 359 #define KERN_NTP_PLL 25 /* node: NTP PLL control */ 360 #define KERN_BOOTFILE 26 /* string: name of booted kernel */ 361 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */ 362 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */ 363 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */ 364 #define KERN_IPC 30 /* node: anything related to IPC */ 365 #define KERN_DUMMY 31 /* unused */ 366 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */ 367 #define KERN_USRSTACK 33 /* int: address of USRSTACK */ 368 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */ 369 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */ 370 #define KERN_MAXID 36 /* number of valid kern ids */ 371 372 #define CTL_KERN_NAMES { \ 373 { 0, 0 }, \ 374 { "ostype", CTLTYPE_STRING }, \ 375 { "osrelease", CTLTYPE_STRING }, \ 376 { "osrevision", CTLTYPE_INT }, \ 377 { "version", CTLTYPE_STRING }, \ 378 { "maxvnodes", CTLTYPE_INT }, \ 379 { "maxproc", CTLTYPE_INT }, \ 380 { "maxfiles", CTLTYPE_INT }, \ 381 { "argmax", CTLTYPE_INT }, \ 382 { "securelevel", CTLTYPE_INT }, \ 383 { "hostname", CTLTYPE_STRING }, \ 384 { "hostid", CTLTYPE_UINT }, \ 385 { "clockrate", CTLTYPE_STRUCT }, \ 386 { "vnode", CTLTYPE_STRUCT }, \ 387 { "proc", CTLTYPE_STRUCT }, \ 388 { "file", CTLTYPE_STRUCT }, \ 389 { "profiling", CTLTYPE_NODE }, \ 390 { "posix1version", CTLTYPE_INT }, \ 391 { "ngroups", CTLTYPE_INT }, \ 392 { "job_control", CTLTYPE_INT }, \ 393 { "saved_ids", CTLTYPE_INT }, \ 394 { "boottime", CTLTYPE_STRUCT }, \ 395 { "nisdomainname", CTLTYPE_STRING }, \ 396 { "update", CTLTYPE_INT }, \ 397 { "osreldate", CTLTYPE_INT }, \ 398 { "ntp_pll", CTLTYPE_NODE }, \ 399 { "bootfile", CTLTYPE_STRING }, \ 400 { "maxfilesperproc", CTLTYPE_INT }, \ 401 { "maxprocperuid", CTLTYPE_INT }, \ 402 { "ipc", CTLTYPE_NODE }, \ 403 { "dummy", CTLTYPE_INT }, \ 404 { "ps_strings", CTLTYPE_INT }, \ 405 { "usrstack", CTLTYPE_INT }, \ 406 { "logsigexit", CTLTYPE_INT }, \ 407 { "iov_max", CTLTYPE_INT }, \ 408 } 409 410 /* 411 * CTL_VFS identifiers 412 */ 413 #define CTL_VFS_NAMES { \ 414 { "vfsconf", CTLTYPE_STRUCT }, \ 415 } 416 417 /* 418 * KERN_PROC subtypes 419 */ 420 #define KERN_PROC_ALL 0 /* everything */ 421 #define KERN_PROC_PID 1 /* by process id */ 422 #define KERN_PROC_PGRP 2 /* by process group id */ 423 #define KERN_PROC_SESSION 3 /* by session of pid */ 424 #define KERN_PROC_TTY 4 /* by controlling tty */ 425 #define KERN_PROC_UID 5 /* by effective uid */ 426 #define KERN_PROC_RUID 6 /* by real uid */ 427 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */ 428 #define KERN_PROC_PROC 8 /* only return procs */ 429 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */ 430 #define KERN_PROC_RGID 10 /* by real group id */ 431 #define KERN_PROC_GID 11 /* by effective group id */ 432 #define KERN_PROC_PATHNAME 12 /* path to executable */ 433 #define KERN_PROC_INC_THREAD 0x10 /* 434 * modifier for pid, pgrp, tty, 435 * uid, ruid, gid, rgid and proc 436 */ 437 438 /* 439 * KERN_IPC identifiers 440 */ 441 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */ 442 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */ 443 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */ 444 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */ 445 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */ 446 #define KIPC_MAX_HDR 6 /* int: max total length of headers */ 447 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */ 448 449 /* 450 * CTL_HW identifiers 451 */ 452 #define HW_MACHINE 1 /* string: machine class */ 453 #define HW_MODEL 2 /* string: specific machine model */ 454 #define HW_NCPU 3 /* int: number of cpus */ 455 #define HW_BYTEORDER 4 /* int: machine byte order */ 456 #define HW_PHYSMEM 5 /* int: total memory */ 457 #define HW_USERMEM 6 /* int: non-kernel memory */ 458 #define HW_PAGESIZE 7 /* int: software page size */ 459 #define HW_DISKNAMES 8 /* strings: disk drive names */ 460 #define HW_DISKSTATS 9 /* struct: diskstats[] */ 461 #define HW_FLOATINGPT 10 /* int: has HW floating point? */ 462 #define HW_MACHINE_ARCH 11 /* string: machine architecture */ 463 #define HW_REALMEM 12 /* int: 'real' memory */ 464 #define HW_MAXID 13 /* number of valid hw ids */ 465 466 #define CTL_HW_NAMES { \ 467 { 0, 0 }, \ 468 { "machine", CTLTYPE_STRING }, \ 469 { "model", CTLTYPE_STRING }, \ 470 { "ncpu", CTLTYPE_INT }, \ 471 { "byteorder", CTLTYPE_INT }, \ 472 { "physmem", CTLTYPE_ULONG }, \ 473 { "usermem", CTLTYPE_ULONG }, \ 474 { "pagesize", CTLTYPE_INT }, \ 475 { "disknames", CTLTYPE_STRUCT }, \ 476 { "diskstats", CTLTYPE_STRUCT }, \ 477 { "floatingpoint", CTLTYPE_INT }, \ 478 { "realmem", CTLTYPE_ULONG }, \ 479 } 480 481 /* 482 * CTL_USER definitions 483 */ 484 #define USER_CS_PATH 1 /* string: _CS_PATH */ 485 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */ 486 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */ 487 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */ 488 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */ 489 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */ 490 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */ 491 #define USER_LINE_MAX 8 /* int: LINE_MAX */ 492 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */ 493 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */ 494 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */ 495 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */ 496 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */ 497 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */ 498 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */ 499 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */ 500 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */ 501 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */ 502 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */ 503 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */ 504 #define USER_MAXID 21 /* number of valid user ids */ 505 506 #define CTL_USER_NAMES { \ 507 { 0, 0 }, \ 508 { "cs_path", CTLTYPE_STRING }, \ 509 { "bc_base_max", CTLTYPE_INT }, \ 510 { "bc_dim_max", CTLTYPE_INT }, \ 511 { "bc_scale_max", CTLTYPE_INT }, \ 512 { "bc_string_max", CTLTYPE_INT }, \ 513 { "coll_weights_max", CTLTYPE_INT }, \ 514 { "expr_nest_max", CTLTYPE_INT }, \ 515 { "line_max", CTLTYPE_INT }, \ 516 { "re_dup_max", CTLTYPE_INT }, \ 517 { "posix2_version", CTLTYPE_INT }, \ 518 { "posix2_c_bind", CTLTYPE_INT }, \ 519 { "posix2_c_dev", CTLTYPE_INT }, \ 520 { "posix2_char_term", CTLTYPE_INT }, \ 521 { "posix2_fort_dev", CTLTYPE_INT }, \ 522 { "posix2_fort_run", CTLTYPE_INT }, \ 523 { "posix2_localedef", CTLTYPE_INT }, \ 524 { "posix2_sw_dev", CTLTYPE_INT }, \ 525 { "posix2_upe", CTLTYPE_INT }, \ 526 { "stream_max", CTLTYPE_INT }, \ 527 { "tzname_max", CTLTYPE_INT }, \ 528 } 529 530 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */ 531 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */ 532 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */ 533 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */ 534 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */ 535 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */ 536 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */ 537 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */ 538 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */ 539 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */ 540 #define CTL_P1003_1B_FSYNC 11 /* boolean */ 541 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */ 542 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */ 543 #define CTL_P1003_1B_TIMERS 14 /* boolean */ 544 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */ 545 #define CTL_P1003_1B_AIO_MAX 16 /* int */ 546 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */ 547 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */ 548 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */ 549 #define CTL_P1003_1B_PAGESIZE 20 /* int */ 550 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */ 551 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */ 552 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */ 553 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */ 554 #define CTL_P1003_1B_TIMER_MAX 25 /* int */ 555 556 #define CTL_P1003_1B_MAXID 26 557 558 #define CTL_P1003_1B_NAMES { \ 559 { 0, 0 }, \ 560 { "asynchronous_io", CTLTYPE_INT }, \ 561 { "mapped_files", CTLTYPE_INT }, \ 562 { "memlock", CTLTYPE_INT }, \ 563 { "memlock_range", CTLTYPE_INT }, \ 564 { "memory_protection", CTLTYPE_INT }, \ 565 { "message_passing", CTLTYPE_INT }, \ 566 { "prioritized_io", CTLTYPE_INT }, \ 567 { "priority_scheduling", CTLTYPE_INT }, \ 568 { "realtime_signals", CTLTYPE_INT }, \ 569 { "semaphores", CTLTYPE_INT }, \ 570 { "fsync", CTLTYPE_INT }, \ 571 { "shared_memory_objects", CTLTYPE_INT }, \ 572 { "synchronized_io", CTLTYPE_INT }, \ 573 { "timers", CTLTYPE_INT }, \ 574 { "aio_listio_max", CTLTYPE_INT }, \ 575 { "aio_max", CTLTYPE_INT }, \ 576 { "aio_prio_delta_max", CTLTYPE_INT }, \ 577 { "delaytimer_max", CTLTYPE_INT }, \ 578 { "mq_open_max", CTLTYPE_INT }, \ 579 { "pagesize", CTLTYPE_INT }, \ 580 { "rtsig_max", CTLTYPE_INT }, \ 581 { "nsems_max", CTLTYPE_INT }, \ 582 { "sem_value_max", CTLTYPE_INT }, \ 583 { "sigqueue_max", CTLTYPE_INT }, \ 584 { "timer_max", CTLTYPE_INT }, \ 585 } 586 587 #ifdef _KERNEL 588 589 /* 590 * Declare some common oids. 591 */ 592 extern struct sysctl_oid_list sysctl__children; 593 SYSCTL_DECL(_kern); 594 SYSCTL_DECL(_sysctl); 595 SYSCTL_DECL(_vm); 596 SYSCTL_DECL(_vfs); 597 SYSCTL_DECL(_net); 598 SYSCTL_DECL(_debug); 599 SYSCTL_DECL(_debug_sizeof); 600 SYSCTL_DECL(_hw); 601 SYSCTL_DECL(_hw_bus); 602 SYSCTL_DECL(_machdep); 603 SYSCTL_DECL(_user); 604 SYSCTL_DECL(_compat); 605 SYSCTL_DECL(_regression); 606 607 extern char machine[]; 608 extern char osrelease[]; 609 extern char ostype[]; 610 extern char kern_ident[]; 611 612 /* Dynamic oid handling */ 613 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist, 614 struct sysctl_oid_list *parent, int nbr, const char *name, 615 int kind, void *arg1, int arg2, 616 int (*handler) (SYSCTL_HANDLER_ARGS), 617 const char *fmt, const char *descr); 618 int sysctl_move_oid(struct sysctl_oid *oidp, 619 struct sysctl_oid_list *parent); 620 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse); 621 int sysctl_ctx_init(struct sysctl_ctx_list *clist); 622 int sysctl_ctx_free(struct sysctl_ctx_list *clist); 623 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist, 624 struct sysctl_oid *oidp); 625 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist, 626 struct sysctl_oid *oidp); 627 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist, 628 struct sysctl_oid *oidp); 629 630 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old, 631 size_t *oldlenp, void *new, size_t newlen, 632 size_t *retval, int flags); 633 int kernel_sysctlbyname(struct thread *td, char *name, 634 void *old, size_t *oldlenp, void *new, size_t newlen, 635 size_t *retval, int flags); 636 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old, 637 size_t *oldlenp, int inkernel, void *new, size_t newlen, 638 size_t *retval, int flags); 639 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid, 640 int *nindx, struct sysctl_req *req); 641 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len); 642 643 #else /* !_KERNEL */ 644 #include <sys/cdefs.h> 645 646 __BEGIN_DECLS 647 int sysctl(int *, u_int, void *, size_t *, void *, size_t); 648 int sysctlbyname(const char *, void *, size_t *, void *, size_t); 649 int sysctlnametomib(const char *, int *, size_t *); 650 __END_DECLS 651 #endif /* _KERNEL */ 652 653 #endif /* !_SYS_SYSCTL_H_ */ 654