FreeBSD/Linux Kernel Cross Reference
sys/sys/sysctl.h
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 * $FreeBSD$
38 */
39
40 #ifndef _SYS_SYSCTL_H_
41 #define _SYS_SYSCTL_H_
42
43 #include <sys/_posix.h>
44
45 /*
46 * Definitions for sysctl call. The sysctl call uses a hierarchical name
47 * for objects that can be examined or modified. The name is expressed as
48 * a sequence of integers. Like a file path name, the meaning of each
49 * component depends on its place in the hierarchy. The top-level and kern
50 * identifiers are defined here, and other identifiers are defined in the
51 * respective subsystem header files.
52 */
53
54 #define CTL_MAXNAME 12 /* largest number of components supported */
55
56 /*
57 * Each subsystem defined by sysctl defines a list of variables
58 * for that subsystem. Each name is either a node with further
59 * levels defined below it, or it is a leaf of some particular
60 * type given below. Each sysctl level defines a set of name/type
61 * pairs to be used by sysctl(1) in manipulating the subsystem.
62 */
63 struct ctlname {
64 char *ctl_name; /* subsystem name */
65 int ctl_type; /* type of name */
66 };
67
68 #define CTLTYPE 0xf /* Mask for the type */
69 #define CTLTYPE_NODE 1 /* name is a node */
70 #define CTLTYPE_INT 2 /* name describes an integer */
71 #define CTLTYPE_STRING 3 /* name describes a string */
72 #define CTLTYPE_QUAD 4 /* name describes a 64-bit number */
73 #define CTLTYPE_OPAQUE 5 /* name describes a structure */
74 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */
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
83 /*
84 * USE THIS instead of a hardwired number from the categories below
85 * to get dynamically assigned sysctl entries using the linker-set
86 * technology. This is the way nearly all new sysctl variables should
87 * be implemented.
88 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
89 */
90 #define OID_AUTO (-1)
91
92 #ifdef KERNEL
93 #define SYSCTL_HANDLER_ARGS (struct sysctl_oid *oidp, void *arg1, int arg2, \
94 struct sysctl_req *req)
95
96 /*
97 * This describes the access space for a sysctl request. This is needed
98 * so that we can use the interface from the kernel or from user-space.
99 */
100 struct sysctl_req {
101 struct proc *p;
102 int lock;
103 void *oldptr;
104 size_t oldlen;
105 size_t oldidx;
106 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
107 void *newptr;
108 size_t newlen;
109 size_t newidx;
110 int (*newfunc)(struct sysctl_req *, void *, size_t);
111 };
112
113 /*
114 * This describes one "oid" in the MIB tree. Potentially more nodes can
115 * be hidden behind it, expanded by the handler.
116 */
117 struct sysctl_oid {
118 int oid_number;
119 int oid_kind;
120 void *oid_arg1;
121 int oid_arg2;
122 const char *oid_name;
123 int (*oid_handler) SYSCTL_HANDLER_ARGS;
124 const char *oid_fmt;
125 };
126
127 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
128 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
129
130 int sysctl_handle_int SYSCTL_HANDLER_ARGS;
131 int sysctl_handle_long SYSCTL_HANDLER_ARGS;
132 int sysctl_handle_intptr SYSCTL_HANDLER_ARGS;
133 int sysctl_handle_string SYSCTL_HANDLER_ARGS;
134 int sysctl_handle_opaque SYSCTL_HANDLER_ARGS;
135
136 /* This constructs a "raw" MIB oid. */
137 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
138 static struct sysctl_oid sysctl__##parent##_##name = { \
139 nbr, kind, a1, a2, #name, handler, fmt }; \
140 DATA_SET(sysctl_##parent, sysctl__##parent##_##name)
141
142 /* This constructs a node from which other oids can hang. */
143 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
144 extern struct linker_set sysctl_##parent##_##name; \
145 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access, \
146 (void*)&sysctl_##parent##_##name, 0, handler, "N", descr); \
147 DATA_SET(sysctl_##parent##_##name, sysctl__##parent##_##name)
148
149 /* Oid for a string. len can be 0 to indicate '\0' termination. */
150 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
151 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \
152 arg, len, sysctl_handle_string, "A", descr)
153
154 /* Oid for an int. If ptr is NULL, val is returned. */
155 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
156 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
157 ptr, val, sysctl_handle_int, "I", descr)
158
159 /* Oid for a long. The pointer must be non NULL. */
160 #define SYSCTL_LONG(parent, nbr, name, access, ptr, descr) \
161 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
162 ptr, 0, sysctl_handle_long, "L", descr)
163
164 /* Oid for an opaque object. Specified by a pointer and a length. */
165 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
166 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
167 ptr, len, sysctl_handle_opaque, fmt, descr)
168
169 /* Oid for a struct. Specified by a pointer and a type. */
170 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
171 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
172 ptr, sizeof(struct type), sysctl_handle_opaque, \
173 "S," #type, descr)
174
175 /* Oid for a procedure. Specified by a pointer and an arg. */
176 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
177 SYSCTL_OID(parent, nbr, name, access, \
178 ptr, arg, handler, fmt, descr)
179 #endif /* KERNEL */
180
181 /*
182 * Top-level identifiers
183 */
184 #define CTL_UNSPEC 0 /* unused */
185 #define CTL_KERN 1 /* "high kernel": proc, limits */
186 #define CTL_VM 2 /* virtual memory */
187 #define CTL_VFS 3 /* file system, mount type is next */
188 #define CTL_NET 4 /* network, see socket.h */
189 #define CTL_DEBUG 5 /* debugging parameters */
190 #define CTL_HW 6 /* generic cpu/io */
191 #define CTL_MACHDEP 7 /* machine dependent */
192 #define CTL_USER 8 /* user-level */
193 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
194 #define CTL_MAXID 10 /* number of valid top-level ids */
195
196 #define CTL_NAMES { \
197 { 0, 0 }, \
198 { "kern", CTLTYPE_NODE }, \
199 { "vm", CTLTYPE_NODE }, \
200 { "vfs", CTLTYPE_NODE }, \
201 { "net", CTLTYPE_NODE }, \
202 { "debug", CTLTYPE_NODE }, \
203 { "hw", CTLTYPE_NODE }, \
204 { "machdep", CTLTYPE_NODE }, \
205 { "user", CTLTYPE_NODE }, \
206 { "p1003_1b", CTLTYPE_NODE }, \
207 }
208
209 /*
210 * CTL_KERN identifiers
211 */
212 #define KERN_OSTYPE 1 /* string: system version */
213 #define KERN_OSRELEASE 2 /* string: system release */
214 #define KERN_OSREV 3 /* int: system revision */
215 #define KERN_VERSION 4 /* string: compile time info */
216 #define KERN_MAXVNODES 5 /* int: max vnodes */
217 #define KERN_MAXPROC 6 /* int: max processes */
218 #define KERN_MAXFILES 7 /* int: max open files */
219 #define KERN_ARGMAX 8 /* int: max arguments to exec */
220 #define KERN_SECURELVL 9 /* int: system security level */
221 #define KERN_HOSTNAME 10 /* string: hostname */
222 #define KERN_HOSTID 11 /* int: host identifier */
223 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
224 #define KERN_VNODE 13 /* struct: vnode structures */
225 #define KERN_PROC 14 /* struct: process entries */
226 #define KERN_FILE 15 /* struct: file entries */
227 #define KERN_PROF 16 /* node: kernel profiling info */
228 #define KERN_POSIX1 17 /* int: POSIX.1 version */
229 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
230 #define KERN_JOB_CONTROL 19 /* int: is job control available */
231 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
232 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
233 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
234 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
235 #define KERN_OSRELDATE 24 /* int: OS release date */
236 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
237 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
238 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
239 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
240 #define KERN_DUMPDEV 29 /* dev_t: device to dump on */
241 #define KERN_IPC 30 /* node: anything related to IPC */
242 #define KERN_DUMMY 31 /* unused */
243 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
244 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
245 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
246 #define KERN_MAXID 35 /* number of valid kern ids */
247
248 #define CTL_KERN_NAMES { \
249 { 0, 0 }, \
250 { "ostype", CTLTYPE_STRING }, \
251 { "osrelease", CTLTYPE_STRING }, \
252 { "osrevision", CTLTYPE_INT }, \
253 { "version", CTLTYPE_STRING }, \
254 { "maxvnodes", CTLTYPE_INT }, \
255 { "maxproc", CTLTYPE_INT }, \
256 { "maxfiles", CTLTYPE_INT }, \
257 { "argmax", CTLTYPE_INT }, \
258 { "securelevel", CTLTYPE_INT }, \
259 { "hostname", CTLTYPE_STRING }, \
260 { "hostid", CTLTYPE_INT }, \
261 { "clockrate", CTLTYPE_STRUCT }, \
262 { "vnode", CTLTYPE_STRUCT }, \
263 { "proc", CTLTYPE_STRUCT }, \
264 { "file", CTLTYPE_STRUCT }, \
265 { "profiling", CTLTYPE_NODE }, \
266 { "posix1version", CTLTYPE_INT }, \
267 { "ngroups", CTLTYPE_INT }, \
268 { "job_control", CTLTYPE_INT }, \
269 { "saved_ids", CTLTYPE_INT }, \
270 { "boottime", CTLTYPE_STRUCT }, \
271 { "nisdomainname", CTLTYPE_STRING }, \
272 { "update", CTLTYPE_INT }, \
273 { "osreldate", CTLTYPE_INT }, \
274 { "ntp_pll", CTLTYPE_NODE }, \
275 { "bootfile", CTLTYPE_STRING }, \
276 { "maxfilesperproc", CTLTYPE_INT }, \
277 { "maxprocperuid", CTLTYPE_INT }, \
278 { "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
279 { "ipc", CTLTYPE_NODE }, \
280 { "dummy", CTLTYPE_INT }, \
281 { "ps_strings", CTLTYPE_INT }, \
282 { "usrstack", CTLTYPE_INT }, \
283 { "logsigexit", CTLTYPE_INT }, \
284 }
285
286 /*
287 * CTL_VFS identifiers
288 */
289 #define CTL_VFS_NAMES { \
290 { "vfsconf", CTLTYPE_STRUCT }, \
291 }
292
293 /*
294 * KERN_PROC subtypes
295 */
296 #define KERN_PROC_ALL 0 /* everything */
297 #define KERN_PROC_PID 1 /* by process id */
298 #define KERN_PROC_PGRP 2 /* by process group id */
299 #define KERN_PROC_SESSION 3 /* by session of pid */
300 #define KERN_PROC_TTY 4 /* by controlling tty */
301 #define KERN_PROC_UID 5 /* by effective uid */
302 #define KERN_PROC_RUID 6 /* by real uid */
303
304 /*
305 * KERN_IPC identifiers
306 */
307 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
308 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
309 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
310 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
311 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
312 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
313 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
314 #define KIPC_MBSTAT 8 /* struct: mbuf usage statistics */
315 #define KIPC_NMBCLUSTERS 9 /* int: maximum mbuf clusters */
316
317 /*
318 * CTL_HW identifiers
319 */
320 #define HW_MACHINE 1 /* string: machine class */
321 #define HW_MODEL 2 /* string: specific machine model */
322 #define HW_NCPU 3 /* int: number of cpus */
323 #define HW_BYTEORDER 4 /* int: machine byte order */
324 #define HW_PHYSMEM 5 /* int: total memory */
325 #define HW_USERMEM 6 /* int: non-kernel memory */
326 #define HW_PAGESIZE 7 /* int: software page size */
327 #define HW_DISKNAMES 8 /* strings: disk drive names */
328 #define HW_DISKSTATS 9 /* struct: diskstats[] */
329 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
330 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
331 #define HW_MAXID 12 /* number of valid hw ids */
332
333 #define CTL_HW_NAMES { \
334 { 0, 0 }, \
335 { "machine", CTLTYPE_STRING }, \
336 { "model", CTLTYPE_STRING }, \
337 { "ncpu", CTLTYPE_INT }, \
338 { "byteorder", CTLTYPE_INT }, \
339 { "physmem", CTLTYPE_INT }, \
340 { "usermem", CTLTYPE_INT }, \
341 { "pagesize", CTLTYPE_INT }, \
342 { "disknames", CTLTYPE_STRUCT }, \
343 { "diskstats", CTLTYPE_STRUCT }, \
344 { "floatingpoint", CTLTYPE_INT }, \
345 }
346
347 /*
348 * CTL_USER definitions
349 */
350 #define USER_CS_PATH 1 /* string: _CS_PATH */
351 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
352 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
353 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
354 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
355 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
356 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
357 #define USER_LINE_MAX 8 /* int: LINE_MAX */
358 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
359 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
360 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
361 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
362 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
363 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
364 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
365 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
366 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
367 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
368 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
369 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
370 #define USER_MAXID 21 /* number of valid user ids */
371
372 #define CTL_USER_NAMES { \
373 { 0, 0 }, \
374 { "cs_path", CTLTYPE_STRING }, \
375 { "bc_base_max", CTLTYPE_INT }, \
376 { "bc_dim_max", CTLTYPE_INT }, \
377 { "bc_scale_max", CTLTYPE_INT }, \
378 { "bc_string_max", CTLTYPE_INT }, \
379 { "coll_weights_max", CTLTYPE_INT }, \
380 { "expr_nest_max", CTLTYPE_INT }, \
381 { "line_max", CTLTYPE_INT }, \
382 { "re_dup_max", CTLTYPE_INT }, \
383 { "posix2_version", CTLTYPE_INT }, \
384 { "posix2_c_bind", CTLTYPE_INT }, \
385 { "posix2_c_dev", CTLTYPE_INT }, \
386 { "posix2_char_term", CTLTYPE_INT }, \
387 { "posix2_fort_dev", CTLTYPE_INT }, \
388 { "posix2_fort_run", CTLTYPE_INT }, \
389 { "posix2_localedef", CTLTYPE_INT }, \
390 { "posix2_sw_dev", CTLTYPE_INT }, \
391 { "posix2_upe", CTLTYPE_INT }, \
392 { "stream_max", CTLTYPE_INT }, \
393 { "tzname_max", CTLTYPE_INT }, \
394 }
395
396 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
397 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
398 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
399 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
400 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
401 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
402 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
403 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
404 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
405 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
406 #define CTL_P1003_1B_FSYNC 11 /* boolean */
407 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
408 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
409 #define CTL_P1003_1B_TIMERS 14 /* boolean */
410 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
411 #define CTL_P1003_1B_AIO_MAX 16 /* int */
412 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
413 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
414 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
415 #define CTL_P1003_1B_PAGESIZE 20 /* int */
416 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
417 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
418 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
419 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
420 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
421
422 #define CTL_P1003_1B_MAXID 26
423
424 #define CTL_P1003_1B_NAMES { \
425 { 0, 0 }, \
426 { "asynchronous_io", CTLTYPE_INT }, \
427 { "mapped_files", CTLTYPE_INT }, \
428 { "memlock", CTLTYPE_INT }, \
429 { "memlock_range", CTLTYPE_INT }, \
430 { "memory_protection", CTLTYPE_INT }, \
431 { "message_passing", CTLTYPE_INT }, \
432 { "prioritized_io", CTLTYPE_INT }, \
433 { "priority_scheduling", CTLTYPE_INT }, \
434 { "realtime_signals", CTLTYPE_INT }, \
435 { "semaphores", CTLTYPE_INT }, \
436 { "fsync", CTLTYPE_INT }, \
437 { "shared_memory_objects", CTLTYPE_INT }, \
438 { "synchronized_io", CTLTYPE_INT }, \
439 { "timers", CTLTYPE_INT }, \
440 { "aio_listio_max", CTLTYPE_INT }, \
441 { "aio_max", CTLTYPE_INT }, \
442 { "aio_prio_delta_max", CTLTYPE_INT }, \
443 { "delaytimer_max", CTLTYPE_INT }, \
444 { "mq_open_max", CTLTYPE_INT }, \
445 { "pagesize", CTLTYPE_INT }, \
446 { "rtsig_max", CTLTYPE_INT }, \
447 { "nsems_max", CTLTYPE_INT }, \
448 { "sem_value_max", CTLTYPE_INT }, \
449 { "sigqueue_max", CTLTYPE_INT }, \
450 { "timer_max", CTLTYPE_INT }, \
451 }
452
453 #ifdef KERNEL
454
455 extern char machine[];
456 extern char osrelease[];
457 extern char ostype[];
458
459 int kernel_sysctl(struct proc *p, int *name, u_int namelen, void *old,
460 size_t *oldlenp, void *new, size_t newlen,
461 size_t *retval);
462 void sysctl_order_all(void);
463 int userland_sysctl(struct proc *p, int *name, u_int namelen, void *old,
464 size_t *oldlenp, int inkernel, void *new, size_t newlen,
465 size_t *retval);
466
467 #else /* !KERNEL */
468 #include <sys/cdefs.h>
469
470 __BEGIN_DECLS
471 int sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
472 int sysctlbyname __P((const char *, void *, size_t *, void *, size_t));
473 __END_DECLS
474 #endif /* KERNEL */
475
476 #endif /* !_SYS_SYSCTL_H_ */
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