2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Mike Karels at Berkeley Software Design, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
36 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93
40 #ifndef _SYS_SYSCTL_H_
41 #define _SYS_SYSCTL_H_
43 #include <sys/_posix.h>
44 #include <sys/queue.h>
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.
55 #define CTL_MAXNAME 12 /* largest number of components supported */
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.
65 char *ctl_name; /* subsystem name */
66 int ctl_type; /* type of name */
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 */
77 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
78 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
79 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR)
80 #define CTLFLAG_NOLOCK 0x20000000 /* XXX Don't Lock */
81 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */
82 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */
83 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */
86 * USE THIS instead of a hardwired number from the categories below
87 * to get dynamically assigned sysctl entries using the linker-set
88 * technology. This is the way nearly all new sysctl variables should
90 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
95 #define SYSCTL_HANDLER_ARGS (struct sysctl_oid *oidp, void *arg1, int arg2, \
96 struct sysctl_req *req)
99 * This describes the access space for a sysctl request. This is needed
100 * so that we can use the interface from the kernel or from user-space.
108 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
112 int (*newfunc)(struct sysctl_req *, void *, size_t);
115 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
118 * This describes one "oid" in the MIB tree. Potentially more nodes can
119 * be hidden behind it, expanded by the handler.
122 struct sysctl_oid_list *oid_parent;
123 SLIST_ENTRY(sysctl_oid) oid_link;
128 const char *oid_name;
129 int (*oid_handler) SYSCTL_HANDLER_ARGS;
133 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
134 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
136 int sysctl_handle_int SYSCTL_HANDLER_ARGS;
137 int sysctl_handle_long SYSCTL_HANDLER_ARGS;
138 int sysctl_handle_intptr SYSCTL_HANDLER_ARGS;
139 int sysctl_handle_string SYSCTL_HANDLER_ARGS;
140 int sysctl_handle_opaque SYSCTL_HANDLER_ARGS;
143 * These functions are used to add/remove an oid from the mib.
145 void sysctl_register_oid(struct sysctl_oid *oidp);
146 void sysctl_unregister_oid(struct sysctl_oid *oidp);
148 /* Declare an oid to allow child oids to be added to it. */
149 #define SYSCTL_DECL(name) \
150 extern struct sysctl_oid_list sysctl_##name##_children
152 /* This constructs a "raw" MIB oid. */
153 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
154 static struct sysctl_oid sysctl__##parent##_##name = { \
155 &sysctl_##parent##_children, { 0 }, \
156 nbr, kind, a1, a2, #name, handler, fmt }; \
157 DATA_SET(sysctl_set, sysctl__##parent##_##name);
159 /* This constructs a node from which other oids can hang. */
160 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
161 struct sysctl_oid_list sysctl_##parent##_##name##_children; \
162 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access, \
163 (void*)&sysctl_##parent##_##name##_children, 0, handler, \
166 /* Oid for a string. len can be 0 to indicate '\0' termination. */
167 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
168 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \
169 arg, len, sysctl_handle_string, "A", descr)
171 /* Oid for an int. If ptr is NULL, val is returned. */
172 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
173 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
174 ptr, val, sysctl_handle_int, "I", descr)
176 /* Oid for a long. The pointer must be non NULL. */
177 #define SYSCTL_LONG(parent, nbr, name, access, ptr, descr) \
178 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
179 ptr, 0, sysctl_handle_long, "L", descr)
181 /* Oid for an opaque object. Specified by a pointer and a length. */
182 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
183 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
184 ptr, len, sysctl_handle_opaque, fmt, descr)
186 /* Oid for a struct. Specified by a pointer and a type. */
187 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
188 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
189 ptr, sizeof(struct type), sysctl_handle_opaque, \
192 /* Oid for a procedure. Specified by a pointer and an arg. */
193 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
194 SYSCTL_OID(parent, nbr, name, access, \
195 ptr, arg, handler, fmt, descr)
199 * Top-level identifiers
201 #define CTL_UNSPEC 0 /* unused */
202 #define CTL_KERN 1 /* "high kernel": proc, limits */
203 #define CTL_VM 2 /* virtual memory */
204 #define CTL_VFS 3 /* file system, mount type is next */
205 #define CTL_NET 4 /* network, see socket.h */
206 #define CTL_DEBUG 5 /* debugging parameters */
207 #define CTL_HW 6 /* generic cpu/io */
208 #define CTL_MACHDEP 7 /* machine dependent */
209 #define CTL_USER 8 /* user-level */
210 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
211 #define CTL_MAXID 10 /* number of valid top-level ids */
213 #define CTL_NAMES { \
215 { "kern", CTLTYPE_NODE }, \
216 { "vm", CTLTYPE_NODE }, \
217 { "vfs", CTLTYPE_NODE }, \
218 { "net", CTLTYPE_NODE }, \
219 { "debug", CTLTYPE_NODE }, \
220 { "hw", CTLTYPE_NODE }, \
221 { "machdep", CTLTYPE_NODE }, \
222 { "user", CTLTYPE_NODE }, \
223 { "p1003_1b", CTLTYPE_NODE }, \
227 * CTL_KERN identifiers
229 #define KERN_OSTYPE 1 /* string: system version */
230 #define KERN_OSRELEASE 2 /* string: system release */
231 #define KERN_OSREV 3 /* int: system revision */
232 #define KERN_VERSION 4 /* string: compile time info */
233 #define KERN_MAXVNODES 5 /* int: max vnodes */
234 #define KERN_MAXPROC 6 /* int: max processes */
235 #define KERN_MAXFILES 7 /* int: max open files */
236 #define KERN_ARGMAX 8 /* int: max arguments to exec */
237 #define KERN_SECURELVL 9 /* int: system security level */
238 #define KERN_HOSTNAME 10 /* string: hostname */
239 #define KERN_HOSTID 11 /* int: host identifier */
240 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
241 #define KERN_VNODE 13 /* struct: vnode structures */
242 #define KERN_PROC 14 /* struct: process entries */
243 #define KERN_FILE 15 /* struct: file entries */
244 #define KERN_PROF 16 /* node: kernel profiling info */
245 #define KERN_POSIX1 17 /* int: POSIX.1 version */
246 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
247 #define KERN_JOB_CONTROL 19 /* int: is job control available */
248 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
249 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
250 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
251 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
252 #define KERN_OSRELDATE 24 /* int: OS release date */
253 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
254 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
255 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
256 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
257 #define KERN_DUMPDEV 29 /* dev_t: device to dump on */
258 #define KERN_IPC 30 /* node: anything related to IPC */
259 #define KERN_DUMMY 31 /* unused */
260 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
261 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
262 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
263 #define KERN_MAXID 35 /* number of valid kern ids */
265 #define CTL_KERN_NAMES { \
267 { "ostype", CTLTYPE_STRING }, \
268 { "osrelease", CTLTYPE_STRING }, \
269 { "osrevision", CTLTYPE_INT }, \
270 { "version", CTLTYPE_STRING }, \
271 { "maxvnodes", CTLTYPE_INT }, \
272 { "maxproc", CTLTYPE_INT }, \
273 { "maxfiles", CTLTYPE_INT }, \
274 { "argmax", CTLTYPE_INT }, \
275 { "securelevel", CTLTYPE_INT }, \
276 { "hostname", CTLTYPE_STRING }, \
277 { "hostid", CTLTYPE_INT }, \
278 { "clockrate", CTLTYPE_STRUCT }, \
279 { "vnode", CTLTYPE_STRUCT }, \
280 { "proc", CTLTYPE_STRUCT }, \
281 { "file", CTLTYPE_STRUCT }, \
282 { "profiling", CTLTYPE_NODE }, \
283 { "posix1version", CTLTYPE_INT }, \
284 { "ngroups", CTLTYPE_INT }, \
285 { "job_control", CTLTYPE_INT }, \
286 { "saved_ids", CTLTYPE_INT }, \
287 { "boottime", CTLTYPE_STRUCT }, \
288 { "nisdomainname", CTLTYPE_STRING }, \
289 { "update", CTLTYPE_INT }, \
290 { "osreldate", CTLTYPE_INT }, \
291 { "ntp_pll", CTLTYPE_NODE }, \
292 { "bootfile", CTLTYPE_STRING }, \
293 { "maxfilesperproc", CTLTYPE_INT }, \
294 { "maxprocperuid", CTLTYPE_INT }, \
295 { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
296 { "ipc", CTLTYPE_NODE }, \
297 { "dummy", CTLTYPE_INT }, \
298 { "ps_strings", CTLTYPE_INT }, \
299 { "usrstack", CTLTYPE_INT }, \
300 { "logsigexit", CTLTYPE_INT }, \
304 * CTL_VFS identifiers
306 #define CTL_VFS_NAMES { \
307 { "vfsconf", CTLTYPE_STRUCT }, \
313 #define KERN_PROC_ALL 0 /* everything */
314 #define KERN_PROC_PID 1 /* by process id */
315 #define KERN_PROC_PGRP 2 /* by process group id */
316 #define KERN_PROC_SESSION 3 /* by session of pid */
317 #define KERN_PROC_TTY 4 /* by controlling tty */
318 #define KERN_PROC_UID 5 /* by effective uid */
319 #define KERN_PROC_RUID 6 /* by real uid */
320 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
323 * KERN_IPC identifiers
325 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
326 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
327 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
328 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
329 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
330 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
331 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
332 #define KIPC_MBSTAT 8 /* struct: mbuf usage statistics */
333 #define KIPC_NMBCLUSTERS 9 /* int: maximum mbuf clusters */
338 #define HW_MACHINE 1 /* string: machine class */
339 #define HW_MODEL 2 /* string: specific machine model */
340 #define HW_NCPU 3 /* int: number of cpus */
341 #define HW_BYTEORDER 4 /* int: machine byte order */
342 #define HW_PHYSMEM 5 /* int: total memory */
343 #define HW_USERMEM 6 /* int: non-kernel memory */
344 #define HW_PAGESIZE 7 /* int: software page size */
345 #define HW_DISKNAMES 8 /* strings: disk drive names */
346 #define HW_DISKSTATS 9 /* struct: diskstats[] */
347 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
348 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
349 #define HW_MAXID 12 /* number of valid hw ids */
351 #define CTL_HW_NAMES { \
353 { "machine", CTLTYPE_STRING }, \
354 { "model", CTLTYPE_STRING }, \
355 { "ncpu", CTLTYPE_INT }, \
356 { "byteorder", CTLTYPE_INT }, \
357 { "physmem", CTLTYPE_INT }, \
358 { "usermem", CTLTYPE_INT }, \
359 { "pagesize", CTLTYPE_INT }, \
360 { "disknames", CTLTYPE_STRUCT }, \
361 { "diskstats", CTLTYPE_STRUCT }, \
362 { "floatingpoint", CTLTYPE_INT }, \
366 * CTL_USER definitions
368 #define USER_CS_PATH 1 /* string: _CS_PATH */
369 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
370 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
371 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
372 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
373 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
374 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
375 #define USER_LINE_MAX 8 /* int: LINE_MAX */
376 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
377 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
378 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
379 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
380 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
381 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
382 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
383 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
384 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
385 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
386 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
387 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
388 #define USER_MAXID 21 /* number of valid user ids */
390 #define CTL_USER_NAMES { \
392 { "cs_path", CTLTYPE_STRING }, \
393 { "bc_base_max", CTLTYPE_INT }, \
394 { "bc_dim_max", CTLTYPE_INT }, \
395 { "bc_scale_max", CTLTYPE_INT }, \
396 { "bc_string_max", CTLTYPE_INT }, \
397 { "coll_weights_max", CTLTYPE_INT }, \
398 { "expr_nest_max", CTLTYPE_INT }, \
399 { "line_max", CTLTYPE_INT }, \
400 { "re_dup_max", CTLTYPE_INT }, \
401 { "posix2_version", CTLTYPE_INT }, \
402 { "posix2_c_bind", CTLTYPE_INT }, \
403 { "posix2_c_dev", CTLTYPE_INT }, \
404 { "posix2_char_term", CTLTYPE_INT }, \
405 { "posix2_fort_dev", CTLTYPE_INT }, \
406 { "posix2_fort_run", CTLTYPE_INT }, \
407 { "posix2_localedef", CTLTYPE_INT }, \
408 { "posix2_sw_dev", CTLTYPE_INT }, \
409 { "posix2_upe", CTLTYPE_INT }, \
410 { "stream_max", CTLTYPE_INT }, \
411 { "tzname_max", CTLTYPE_INT }, \
414 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
415 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
416 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
417 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
418 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
419 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
420 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
421 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
422 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
423 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
424 #define CTL_P1003_1B_FSYNC 11 /* boolean */
425 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
426 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
427 #define CTL_P1003_1B_TIMERS 14 /* boolean */
428 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
429 #define CTL_P1003_1B_AIO_MAX 16 /* int */
430 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
431 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
432 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
433 #define CTL_P1003_1B_PAGESIZE 20 /* int */
434 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
435 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
436 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
437 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
438 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
440 #define CTL_P1003_1B_MAXID 26
442 #define CTL_P1003_1B_NAMES { \
444 { "asynchronous_io", CTLTYPE_INT }, \
445 { "mapped_files", CTLTYPE_INT }, \
446 { "memlock", CTLTYPE_INT }, \
447 { "memlock_range", CTLTYPE_INT }, \
448 { "memory_protection", CTLTYPE_INT }, \
449 { "message_passing", CTLTYPE_INT }, \
450 { "prioritized_io", CTLTYPE_INT }, \
451 { "priority_scheduling", CTLTYPE_INT }, \
452 { "realtime_signals", CTLTYPE_INT }, \
453 { "semaphores", CTLTYPE_INT }, \
454 { "fsync", CTLTYPE_INT }, \
455 { "shared_memory_objects", CTLTYPE_INT }, \
456 { "synchronized_io", CTLTYPE_INT }, \
457 { "timers", CTLTYPE_INT }, \
458 { "aio_listio_max", CTLTYPE_INT }, \
459 { "aio_max", CTLTYPE_INT }, \
460 { "aio_prio_delta_max", CTLTYPE_INT }, \
461 { "delaytimer_max", CTLTYPE_INT }, \
462 { "mq_open_max", CTLTYPE_INT }, \
463 { "pagesize", CTLTYPE_INT }, \
464 { "rtsig_max", CTLTYPE_INT }, \
465 { "nsems_max", CTLTYPE_INT }, \
466 { "sem_value_max", CTLTYPE_INT }, \
467 { "sigqueue_max", CTLTYPE_INT }, \
468 { "timer_max", CTLTYPE_INT }, \
474 * Declare some common oids.
476 extern struct sysctl_oid_list sysctl__children;
478 SYSCTL_DECL(_sysctl);
484 SYSCTL_DECL(_machdep);
486 SYSCTL_DECL(_compat);
488 extern char machine[];
489 extern char osrelease[];
490 extern char ostype[];
494 void sysctl_register_set(struct linker_set *lsp);
495 void sysctl_unregister_set(struct linker_set *lsp);
496 int kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old,
497 size_t *oldlenp, void *new, size_t newlen,
499 int userland_sysctl(struct proc *p, int *name, u_int namelen, void *old,
500 size_t *oldlenp, int inkernel, void *new, size_t newlen,
502 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
503 int *nindx, struct sysctl_req *req);
506 #include <sys/cdefs.h>
509 int sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
510 int sysctlbyname __P((const char *, void *, size_t *, void *, size_t));
514 #endif /* !_SYS_SYSCTL_H_ */