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: releng/5.2/sys/sys/sysctl.h 122707 2003-11-14 21:37:35Z trhodes $
38 */
39
40 #ifndef _SYS_SYSCTL_H_
41 #define _SYS_SYSCTL_H_
42
43 #include <sys/queue.h>
44
45 struct thread;
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(8) 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
80 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
81 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
82 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR)
83 #define CTLFLAG_NOLOCK 0x20000000 /* XXX Don't Lock */
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_TUN 0x00080000 /* Tunable variable */
91 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
92
93 /*
94 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
95 *
96 * Secure when the securelevel is raised to at least N.
97 */
98 #define CTLSHIFT_SECURE 20
99 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
100 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
101 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
102
103 /*
104 * USE THIS instead of a hardwired number from the categories below
105 * to get dynamically assigned sysctl entries using the linker-set
106 * technology. This is the way nearly all new sysctl variables should
107 * be implemented.
108 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
109 */
110 #define OID_AUTO (-1)
111
112 /*
113 * The starting number for dynamically-assigned entries. WARNING!
114 * ALL static sysctl entries should have numbers LESS than this!
115 */
116 #define CTL_AUTO_START 0x100
117
118 #ifdef _KERNEL
119 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \
120 struct sysctl_req *req
121
122 /* definitions for sysctl_req 'lock' member */
123 #define REQ_UNLOCKED 0 /* not locked and not wired */
124 #define REQ_LOCKED 1 /* locked and not wired */
125 #define REQ_WIRED 2 /* locked and wired */
126
127 /*
128 * This describes the access space for a sysctl request. This is needed
129 * so that we can use the interface from the kernel or from user-space.
130 */
131 struct sysctl_req {
132 struct thread *td; /* used for access checking */
133 int lock; /* locking/wiring state */
134 void *oldptr;
135 size_t oldlen;
136 size_t oldidx;
137 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
138 void *newptr;
139 size_t newlen;
140 size_t newidx;
141 int (*newfunc)(struct sysctl_req *, void *, size_t);
142 };
143
144 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
145
146 /*
147 * This describes one "oid" in the MIB tree. Potentially more nodes can
148 * be hidden behind it, expanded by the handler.
149 */
150 struct sysctl_oid {
151 struct sysctl_oid_list *oid_parent;
152 SLIST_ENTRY(sysctl_oid) oid_link;
153 int oid_number;
154 u_int oid_kind;
155 void *oid_arg1;
156 int oid_arg2;
157 const char *oid_name;
158 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
159 const char *oid_fmt;
160 int oid_refcnt;
161 const char *descr;
162 };
163
164 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
165 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
166
167 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
168 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
169 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS);
170 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
171 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
172
173 /*
174 * These functions are used to add/remove an oid from the mib.
175 */
176 void sysctl_register_oid(struct sysctl_oid *oidp);
177 void sysctl_unregister_oid(struct sysctl_oid *oidp);
178
179 /* Declare a static oid to allow child oids to be added to it. */
180 #define SYSCTL_DECL(name) \
181 extern struct sysctl_oid_list sysctl_##name##_children
182
183 /* Hide these in macros */
184 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
185 (oid_ptr)->oid_arg1
186 #define SYSCTL_STATIC_CHILDREN(oid_name) \
187 (&sysctl_##oid_name##_children)
188
189 /* === Structs and macros related to context handling === */
190
191 /* All dynamically created sysctls can be tracked in a context list. */
192 struct sysctl_ctx_entry {
193 struct sysctl_oid *entry;
194 TAILQ_ENTRY(sysctl_ctx_entry) link;
195 };
196
197 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
198
199 #define SYSCTL_NODE_CHILDREN(parent, name) \
200 sysctl_##parent##_##name##_children
201
202 /* This constructs a "raw" MIB oid. */
203 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
204 static struct sysctl_oid sysctl__##parent##_##name = { \
205 &sysctl_##parent##_children, { 0 }, \
206 nbr, kind, a1, a2, #name, handler, fmt, 0, descr }; \
207 DATA_SET(sysctl_set, sysctl__##parent##_##name)
208
209 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
210 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr)
211
212 /* This constructs a node from which other oids can hang. */
213 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
214 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \
215 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \
216 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, \
217 "N", descr)
218
219 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
220 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
221 0, 0, handler, "N", descr)
222
223 /* Oid for a string. len can be 0 to indicate '\0' termination. */
224 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
225 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
226 arg, len, sysctl_handle_string, "A", descr)
227
228 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
229 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
230 arg, len, sysctl_handle_string, "A", descr)
231
232 /* Oid for an int. If ptr is NULL, val is returned. */
233 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
234 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|(access), \
235 ptr, val, sysctl_handle_int, "I", descr)
236
237 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
238 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|(access), \
239 ptr, val, sysctl_handle_int, "I", descr)
240
241 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
242 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
243 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \
244 ptr, val, sysctl_handle_int, "IU", descr)
245
246 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
247 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access), \
248 ptr, val, sysctl_handle_int, "IU", descr)
249
250 /* Oid for a long. The pointer must be non NULL. */
251 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
252 SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|(access), \
253 ptr, val, sysctl_handle_long, "L", descr)
254
255 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
256 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|(access), \
257 ptr, 0, sysctl_handle_long, "L", descr)
258
259 /* Oid for an unsigned long. The pointer must be non NULL. */
260 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
261 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \
262 ptr, val, sysctl_handle_long, "LU", descr)
263
264 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
265 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access), \
266 ptr, 0, sysctl_handle_long, "LU", descr)
267
268 /* Oid for an opaque object. Specified by a pointer and a length. */
269 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
270 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
271 ptr, len, sysctl_handle_opaque, fmt, descr)
272
273 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
274 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
275 ptr, len, sysctl_handle_opaque, fmt, descr)
276
277 /* Oid for a struct. Specified by a pointer and a type. */
278 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
279 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
280 ptr, sizeof(struct type), sysctl_handle_opaque, \
281 "S," #type, descr)
282
283 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
284 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
285 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr)
286
287 /* Oid for a procedure. Specified by a pointer and an arg. */
288 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
289 SYSCTL_OID(parent, nbr, name, (access), \
290 ptr, arg, handler, fmt, descr)
291
292 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
293 sysctl_add_oid(ctx, parent, nbr, name, (access), \
294 ptr, arg, handler, fmt, descr)
295
296 #endif /* _KERNEL */
297
298 /*
299 * Top-level identifiers
300 */
301 #define CTL_UNSPEC 0 /* unused */
302 #define CTL_KERN 1 /* "high kernel": proc, limits */
303 #define CTL_VM 2 /* virtual memory */
304 #define CTL_VFS 3 /* filesystem, mount type is next */
305 #define CTL_NET 4 /* network, see socket.h */
306 #define CTL_DEBUG 5 /* debugging parameters */
307 #define CTL_HW 6 /* generic cpu/io */
308 #define CTL_MACHDEP 7 /* machine dependent */
309 #define CTL_USER 8 /* user-level */
310 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
311 #define CTL_MAXID 10 /* number of valid top-level ids */
312
313 #define CTL_NAMES { \
314 { 0, 0 }, \
315 { "kern", CTLTYPE_NODE }, \
316 { "vm", CTLTYPE_NODE }, \
317 { "vfs", CTLTYPE_NODE }, \
318 { "net", CTLTYPE_NODE }, \
319 { "debug", CTLTYPE_NODE }, \
320 { "hw", CTLTYPE_NODE }, \
321 { "machdep", CTLTYPE_NODE }, \
322 { "user", CTLTYPE_NODE }, \
323 { "p1003_1b", CTLTYPE_NODE }, \
324 }
325
326 /*
327 * CTL_KERN identifiers
328 */
329 #define KERN_OSTYPE 1 /* string: system version */
330 #define KERN_OSRELEASE 2 /* string: system release */
331 #define KERN_OSREV 3 /* int: system revision */
332 #define KERN_VERSION 4 /* string: compile time info */
333 #define KERN_MAXVNODES 5 /* int: max vnodes */
334 #define KERN_MAXPROC 6 /* int: max processes */
335 #define KERN_MAXFILES 7 /* int: max open files */
336 #define KERN_ARGMAX 8 /* int: max arguments to exec */
337 #define KERN_SECURELVL 9 /* int: system security level */
338 #define KERN_HOSTNAME 10 /* string: hostname */
339 #define KERN_HOSTID 11 /* int: host identifier */
340 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
341 #define KERN_VNODE 13 /* struct: vnode structures */
342 #define KERN_PROC 14 /* struct: process entries */
343 #define KERN_FILE 15 /* struct: file entries */
344 #define KERN_PROF 16 /* node: kernel profiling info */
345 #define KERN_POSIX1 17 /* int: POSIX.1 version */
346 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
347 #define KERN_JOB_CONTROL 19 /* int: is job control available */
348 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
349 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
350 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
351 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
352 #define KERN_OSRELDATE 24 /* int: kernel release date */
353 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
354 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
355 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
356 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
357 #define KERN_DUMPDEV 29 /* dev_t: device to dump on */
358 #define KERN_IPC 30 /* node: anything related to IPC */
359 #define KERN_DUMMY 31 /* unused */
360 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
361 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
362 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
363 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
364 #define KERN_MAXID 36 /* number of valid kern ids */
365
366 #define CTL_KERN_NAMES { \
367 { 0, 0 }, \
368 { "ostype", CTLTYPE_STRING }, \
369 { "osrelease", CTLTYPE_STRING }, \
370 { "osrevision", CTLTYPE_INT }, \
371 { "version", CTLTYPE_STRING }, \
372 { "maxvnodes", CTLTYPE_INT }, \
373 { "maxproc", CTLTYPE_INT }, \
374 { "maxfiles", CTLTYPE_INT }, \
375 { "argmax", CTLTYPE_INT }, \
376 { "securelevel", CTLTYPE_INT }, \
377 { "hostname", CTLTYPE_STRING }, \
378 { "hostid", CTLTYPE_UINT }, \
379 { "clockrate", CTLTYPE_STRUCT }, \
380 { "vnode", CTLTYPE_STRUCT }, \
381 { "proc", CTLTYPE_STRUCT }, \
382 { "file", CTLTYPE_STRUCT }, \
383 { "profiling", CTLTYPE_NODE }, \
384 { "posix1version", CTLTYPE_INT }, \
385 { "ngroups", CTLTYPE_INT }, \
386 { "job_control", CTLTYPE_INT }, \
387 { "saved_ids", CTLTYPE_INT }, \
388 { "boottime", CTLTYPE_STRUCT }, \
389 { "nisdomainname", CTLTYPE_STRING }, \
390 { "update", CTLTYPE_INT }, \
391 { "osreldate", CTLTYPE_INT }, \
392 { "ntp_pll", CTLTYPE_NODE }, \
393 { "bootfile", CTLTYPE_STRING }, \
394 { "maxfilesperproc", CTLTYPE_INT }, \
395 { "maxprocperuid", CTLTYPE_INT }, \
396 { "ipc", CTLTYPE_NODE }, \
397 { "dummy", CTLTYPE_INT }, \
398 { "ps_strings", CTLTYPE_INT }, \
399 { "usrstack", CTLTYPE_INT }, \
400 { "logsigexit", CTLTYPE_INT }, \
401 { "iov_max", CTLTYPE_INT }, \
402 }
403
404 /*
405 * CTL_VFS identifiers
406 */
407 #define CTL_VFS_NAMES { \
408 { "vfsconf", CTLTYPE_STRUCT }, \
409 }
410
411 /*
412 * KERN_PROC subtypes
413 */
414 #define KERN_PROC_ALL 0 /* everything */
415 #define KERN_PROC_PID 1 /* by process id */
416 #define KERN_PROC_PGRP 2 /* by process group id */
417 #define KERN_PROC_SESSION 3 /* by session of pid */
418 #define KERN_PROC_TTY 4 /* by controlling tty */
419 #define KERN_PROC_UID 5 /* by effective uid */
420 #define KERN_PROC_RUID 6 /* by real uid */
421 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
422 #define KERN_PROC_PROC 8 /* only return procs */
423 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
424
425 /*
426 * KERN_IPC identifiers
427 */
428 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
429 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
430 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
431 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
432 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
433 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
434 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
435
436 /*
437 * CTL_HW identifiers
438 */
439 #define HW_MACHINE 1 /* string: machine class */
440 #define HW_MODEL 2 /* string: specific machine model */
441 #define HW_NCPU 3 /* int: number of cpus */
442 #define HW_BYTEORDER 4 /* int: machine byte order */
443 #define HW_PHYSMEM 5 /* int: total memory */
444 #define HW_USERMEM 6 /* int: non-kernel memory */
445 #define HW_PAGESIZE 7 /* int: software page size */
446 #define HW_DISKNAMES 8 /* strings: disk drive names */
447 #define HW_DISKSTATS 9 /* struct: diskstats[] */
448 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
449 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
450 #define HW_MAXID 12 /* number of valid hw ids */
451
452 #define CTL_HW_NAMES { \
453 { 0, 0 }, \
454 { "machine", CTLTYPE_STRING }, \
455 { "model", CTLTYPE_STRING }, \
456 { "ncpu", CTLTYPE_INT }, \
457 { "byteorder", CTLTYPE_INT }, \
458 { "physmem", CTLTYPE_ULONG }, \
459 { "usermem", CTLTYPE_ULONG }, \
460 { "pagesize", CTLTYPE_INT }, \
461 { "disknames", CTLTYPE_STRUCT }, \
462 { "diskstats", CTLTYPE_STRUCT }, \
463 { "floatingpoint", CTLTYPE_INT }, \
464 }
465
466 /*
467 * CTL_USER definitions
468 */
469 #define USER_CS_PATH 1 /* string: _CS_PATH */
470 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
471 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
472 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
473 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
474 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
475 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
476 #define USER_LINE_MAX 8 /* int: LINE_MAX */
477 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
478 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
479 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
480 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
481 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
482 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
483 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
484 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
485 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
486 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
487 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
488 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
489 #define USER_MAXID 21 /* number of valid user ids */
490
491 #define CTL_USER_NAMES { \
492 { 0, 0 }, \
493 { "cs_path", CTLTYPE_STRING }, \
494 { "bc_base_max", CTLTYPE_INT }, \
495 { "bc_dim_max", CTLTYPE_INT }, \
496 { "bc_scale_max", CTLTYPE_INT }, \
497 { "bc_string_max", CTLTYPE_INT }, \
498 { "coll_weights_max", CTLTYPE_INT }, \
499 { "expr_nest_max", CTLTYPE_INT }, \
500 { "line_max", CTLTYPE_INT }, \
501 { "re_dup_max", CTLTYPE_INT }, \
502 { "posix2_version", CTLTYPE_INT }, \
503 { "posix2_c_bind", CTLTYPE_INT }, \
504 { "posix2_c_dev", CTLTYPE_INT }, \
505 { "posix2_char_term", CTLTYPE_INT }, \
506 { "posix2_fort_dev", CTLTYPE_INT }, \
507 { "posix2_fort_run", CTLTYPE_INT }, \
508 { "posix2_localedef", CTLTYPE_INT }, \
509 { "posix2_sw_dev", CTLTYPE_INT }, \
510 { "posix2_upe", CTLTYPE_INT }, \
511 { "stream_max", CTLTYPE_INT }, \
512 { "tzname_max", CTLTYPE_INT }, \
513 }
514
515 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
516 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
517 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
518 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
519 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
520 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
521 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
522 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
523 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
524 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
525 #define CTL_P1003_1B_FSYNC 11 /* boolean */
526 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
527 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
528 #define CTL_P1003_1B_TIMERS 14 /* boolean */
529 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
530 #define CTL_P1003_1B_AIO_MAX 16 /* int */
531 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
532 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
533 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
534 #define CTL_P1003_1B_PAGESIZE 20 /* int */
535 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
536 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
537 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
538 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
539 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
540
541 #define CTL_P1003_1B_MAXID 26
542
543 #define CTL_P1003_1B_NAMES { \
544 { 0, 0 }, \
545 { "asynchronous_io", CTLTYPE_INT }, \
546 { "mapped_files", CTLTYPE_INT }, \
547 { "memlock", CTLTYPE_INT }, \
548 { "memlock_range", CTLTYPE_INT }, \
549 { "memory_protection", CTLTYPE_INT }, \
550 { "message_passing", CTLTYPE_INT }, \
551 { "prioritized_io", CTLTYPE_INT }, \
552 { "priority_scheduling", CTLTYPE_INT }, \
553 { "realtime_signals", CTLTYPE_INT }, \
554 { "semaphores", CTLTYPE_INT }, \
555 { "fsync", CTLTYPE_INT }, \
556 { "shared_memory_objects", CTLTYPE_INT }, \
557 { "synchronized_io", CTLTYPE_INT }, \
558 { "timers", CTLTYPE_INT }, \
559 { "aio_listio_max", CTLTYPE_INT }, \
560 { "aio_max", CTLTYPE_INT }, \
561 { "aio_prio_delta_max", CTLTYPE_INT }, \
562 { "delaytimer_max", CTLTYPE_INT }, \
563 { "mq_open_max", CTLTYPE_INT }, \
564 { "pagesize", CTLTYPE_INT }, \
565 { "rtsig_max", CTLTYPE_INT }, \
566 { "nsems_max", CTLTYPE_INT }, \
567 { "sem_value_max", CTLTYPE_INT }, \
568 { "sigqueue_max", CTLTYPE_INT }, \
569 { "timer_max", CTLTYPE_INT }, \
570 }
571
572 #ifdef _KERNEL
573
574 /*
575 * Declare some common oids.
576 */
577 extern struct sysctl_oid_list sysctl__children;
578 SYSCTL_DECL(_kern);
579 SYSCTL_DECL(_sysctl);
580 SYSCTL_DECL(_vm);
581 SYSCTL_DECL(_vfs);
582 SYSCTL_DECL(_net);
583 SYSCTL_DECL(_debug);
584 SYSCTL_DECL(_debug_sizeof);
585 SYSCTL_DECL(_hw);
586 SYSCTL_DECL(_machdep);
587 SYSCTL_DECL(_user);
588 SYSCTL_DECL(_compat);
589
590 extern char machine[];
591 extern char osrelease[];
592 extern char ostype[];
593 extern char kern_ident[];
594
595 /* Dynamic oid handling */
596 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
597 struct sysctl_oid_list *parent, int nbr, const char *name,
598 int kind, void *arg1, int arg2,
599 int (*handler) (SYSCTL_HANDLER_ARGS),
600 const char *fmt, const char *descr);
601 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
602 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
603 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
604 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
605 struct sysctl_oid *oidp);
606 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
607 struct sysctl_oid *oidp);
608 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
609 struct sysctl_oid *oidp);
610
611 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
612 size_t *oldlenp, void *new, size_t newlen,
613 size_t *retval);
614 int kernel_sysctlbyname(struct thread *td, char *name,
615 void *old, size_t *oldlenp, void *new, size_t newlen,
616 size_t *retval);
617 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
618 size_t *oldlenp, int inkernel, void *new, size_t newlen,
619 size_t *retval);
620 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
621 int *nindx, struct sysctl_req *req);
622 void sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
623
624 #else /* !_KERNEL */
625 #include <sys/cdefs.h>
626
627 __BEGIN_DECLS
628 int sysctl(int *, u_int, void *, size_t *, void *, size_t);
629 int sysctlbyname(const char *, void *, size_t *, void *, size_t);
630 int sysctlnametomib(const char *, int *, size_t *);
631 __END_DECLS
632 #endif /* _KERNEL */
633
634 #endif /* !_SYS_SYSCTL_H_ */
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