sysctl.h revision 91687
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: head/sys/sys/sysctl.h 91687 2002-03-05 13:56:58Z phk $
38 */
39
40#ifndef _SYS_SYSCTL_H_
41#define	_SYS_SYSCTL_H_
42
43#include <sys/_posix.h>
44#include <sys/queue.h>
45
46struct thread;
47/*
48 * Definitions for sysctl call.  The sysctl call uses a hierarchical name
49 * for objects that can be examined or modified.  The name is expressed as
50 * a sequence of integers.  Like a file path name, the meaning of each
51 * component depends on its place in the hierarchy.  The top-level and kern
52 * identifiers are defined here, and other identifiers are defined in the
53 * respective subsystem header files.
54 */
55
56#define CTL_MAXNAME	12	/* largest number of components supported */
57
58/*
59 * Each subsystem defined by sysctl defines a list of variables
60 * for that subsystem. Each name is either a node with further
61 * levels defined below it, or it is a leaf of some particular
62 * type given below. Each sysctl level defines a set of name/type
63 * pairs to be used by sysctl(1) in manipulating the subsystem.
64 */
65struct ctlname {
66	char	*ctl_name;	/* subsystem name */
67	int	ctl_type;	/* type of name */
68};
69
70#define CTLTYPE		0xf	/* Mask for the type */
71#define	CTLTYPE_NODE	1	/* name is a node */
72#define	CTLTYPE_INT	2	/* name describes an integer */
73#define	CTLTYPE_STRING	3	/* name describes a string */
74#define	CTLTYPE_QUAD	4	/* name describes a 64-bit number */
75#define	CTLTYPE_OPAQUE	5	/* name describes a structure */
76#define	CTLTYPE_STRUCT	CTLTYPE_OPAQUE	/* name describes a structure */
77#define	CTLTYPE_UINT	6	/* name describes an unsigned integer */
78#define	CTLTYPE_LONG	7	/* name describes a long */
79#define	CTLTYPE_ULONG	8	/* name describes an unsigned long */
80
81#define CTLFLAG_RD	0x80000000	/* Allow reads of variable */
82#define CTLFLAG_WR	0x40000000	/* Allow writes to the variable */
83#define CTLFLAG_RW	(CTLFLAG_RD|CTLFLAG_WR)
84#define CTLFLAG_NOLOCK	0x20000000	/* XXX Don't Lock */
85#define CTLFLAG_ANYBODY	0x10000000	/* All users can set this var */
86#define CTLFLAG_SECURE	0x08000000	/* Permit set only if securelevel<=0 */
87#define CTLFLAG_PRISON	0x04000000	/* Prisoned roots can fiddle */
88#define CTLFLAG_DYN	0x02000000	/* Dynamic oid - can be freed */
89
90/*
91 * USE THIS instead of a hardwired number from the categories below
92 * to get dynamically assigned sysctl entries using the linker-set
93 * technology. This is the way nearly all new sysctl variables should
94 * be implemented.
95 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
96 */
97#define OID_AUTO	(-1)
98
99/*
100 * The starting number for dynamically-assigned entries.  WARNING!
101 * ALL static sysctl entries should have numbers LESS than this!
102 */
103#define CTL_AUTO_START	0x100
104
105#ifdef _KERNEL
106#define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \
107	struct sysctl_req *req
108
109/*
110 * This describes the access space for a sysctl request.  This is needed
111 * so that we can use the interface from the kernel or from user-space.
112 */
113struct sysctl_req {
114	struct thread	*td;		/* used for access checking */
115	int		lock;
116	void		*oldptr;
117	size_t		oldlen;
118	size_t		oldidx;
119	int		(*oldfunc)(struct sysctl_req *, const void *, size_t);
120	void		*newptr;
121	size_t		newlen;
122	size_t		newidx;
123	int		(*newfunc)(struct sysctl_req *, void *, size_t);
124};
125
126SLIST_HEAD(sysctl_oid_list, sysctl_oid);
127
128/*
129 * This describes one "oid" in the MIB tree.  Potentially more nodes can
130 * be hidden behind it, expanded by the handler.
131 */
132struct sysctl_oid {
133	struct sysctl_oid_list *oid_parent;
134	SLIST_ENTRY(sysctl_oid) oid_link;
135	int		oid_number;
136	int		oid_kind;
137	void		*oid_arg1;
138	int		oid_arg2;
139	const char	*oid_name;
140	int 		(*oid_handler)(SYSCTL_HANDLER_ARGS);
141	const char	*oid_fmt;
142	int		oid_refcnt;
143	char		*descr;
144};
145
146#define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
147#define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
148
149int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
150int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
151int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS);
152int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
153int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
154
155/*
156 * These functions are used to add/remove an oid from the mib.
157 */
158void sysctl_register_oid(struct sysctl_oid *oidp);
159void sysctl_unregister_oid(struct sysctl_oid *oidp);
160
161/* Declare a static oid to allow child oids to be added to it. */
162#define SYSCTL_DECL(name)					\
163	extern struct sysctl_oid_list sysctl_##name##_children
164
165/* Hide these in macros */
166#define	SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
167	(oid_ptr)->oid_arg1
168#define	SYSCTL_STATIC_CHILDREN(oid_name) \
169	(&sysctl_##oid_name##_children)
170
171/* === Structs and macros related to context handling === */
172
173/* All dynamically created sysctls can be tracked in a context list. */
174struct sysctl_ctx_entry {
175	struct sysctl_oid *entry;
176	TAILQ_ENTRY(sysctl_ctx_entry) link;
177};
178
179TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
180
181/* This constructs a "raw" MIB oid. */
182#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
183	static struct sysctl_oid sysctl__##parent##_##name = {		 \
184		&sysctl_##parent##_children, { 0 },			 \
185		nbr, kind, a1, a2, #name, handler, fmt, 0, descr };	 \
186	DATA_SET(sysctl_set, sysctl__##parent##_##name);
187
188#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
189	sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr);
190
191/* This constructs a node from which other oids can hang. */
192#define SYSCTL_NODE(parent, nbr, name, access, handler, descr)		    \
193	struct sysctl_oid_list sysctl_##parent##_##name##_children;	    \
194	SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|access,		    \
195		   (void*)&sysctl_##parent##_##name##_children, 0, handler, \
196		   "N", descr);
197
198#define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr)	    \
199	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|access,	    \
200	0, 0, handler, "N", descr);
201
202/* Oid for a string.  len can be 0 to indicate '\0' termination. */
203#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
204	SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|access, \
205		arg, len, sysctl_handle_string, "A", descr)
206
207#define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr)  \
208	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|access,	    \
209	arg, len, sysctl_handle_string, "A", descr);
210
211/* Oid for an int.  If ptr is NULL, val is returned. */
212#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
213	SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|access, \
214		ptr, val, sysctl_handle_int, "I", descr)
215
216#define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr)	    \
217	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|access,	    \
218	ptr, val, sysctl_handle_int, "I", descr);
219
220/* Oid for an unsigned int.  If ptr is NULL, val is returned. */
221#define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
222	SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|access, \
223		ptr, val, sysctl_handle_int, "IU", descr)
224
225#define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr)    \
226	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|access,	    \
227	ptr, val, sysctl_handle_int, "IU", descr);
228
229/* Oid for a long.  The pointer must be non NULL. */
230#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
231	SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|access, \
232		ptr, val, sysctl_handle_long, "L", descr)
233
234#define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr)	    \
235	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|access,	    \
236	ptr, 0, sysctl_handle_long, "L", descr);
237
238/* Oid for a long.  The pointer must be non NULL. */
239#define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
240	SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|access, \
241		ptr, val, sysctl_handle_long, "LU", descr)
242
243#define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr)	    \
244	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|access,	    \
245	ptr, 0, sysctl_handle_long, "LU", descr);
246
247/* Oid for an opaque object.  Specified by a pointer and a length. */
248#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
249	SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
250		ptr, len, sysctl_handle_opaque, fmt, descr)
251
252#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
253	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|access,	    \
254	ptr, len, sysctl_handle_opaque, fmt, descr);
255
256/* Oid for a struct.  Specified by a pointer and a type. */
257#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
258	SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|access, \
259		ptr, sizeof(struct type), sysctl_handle_opaque, \
260		"S," #type, descr)
261
262#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
263	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|access,	    \
264	ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr);
265
266/* Oid for a procedure.  Specified by a pointer and an arg. */
267#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
268	SYSCTL_OID(parent, nbr, name, access, \
269		ptr, arg, handler, fmt, descr)
270
271#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
272	sysctl_add_oid(ctx, parent, nbr, name, access,			    \
273	ptr, arg, handler, fmt, descr);
274
275#endif /* _KERNEL */
276
277/*
278 * Top-level identifiers
279 */
280#define	CTL_UNSPEC	0		/* unused */
281#define	CTL_KERN	1		/* "high kernel": proc, limits */
282#define	CTL_VM		2		/* virtual memory */
283#define	CTL_VFS		3		/* file system, mount type is next */
284#define	CTL_NET		4		/* network, see socket.h */
285#define	CTL_DEBUG	5		/* debugging parameters */
286#define	CTL_HW		6		/* generic cpu/io */
287#define	CTL_MACHDEP	7		/* machine dependent */
288#define	CTL_USER	8		/* user-level */
289#define	CTL_P1003_1B	9		/* POSIX 1003.1B */
290#define	CTL_MAXID	10		/* number of valid top-level ids */
291
292#define CTL_NAMES { \
293	{ 0, 0 }, \
294	{ "kern", CTLTYPE_NODE }, \
295	{ "vm", CTLTYPE_NODE }, \
296	{ "vfs", CTLTYPE_NODE }, \
297	{ "net", CTLTYPE_NODE }, \
298	{ "debug", CTLTYPE_NODE }, \
299	{ "hw", CTLTYPE_NODE }, \
300	{ "machdep", CTLTYPE_NODE }, \
301	{ "user", CTLTYPE_NODE }, \
302	{ "p1003_1b", CTLTYPE_NODE }, \
303}
304
305/*
306 * CTL_KERN identifiers
307 */
308#define	KERN_OSTYPE	 	 1	/* string: system version */
309#define	KERN_OSRELEASE	 	 2	/* string: system release */
310#define	KERN_OSREV	 	 3	/* int: system revision */
311#define	KERN_VERSION	 	 4	/* string: compile time info */
312#define	KERN_MAXVNODES	 	 5	/* int: max vnodes */
313#define	KERN_MAXPROC	 	 6	/* int: max processes */
314#define	KERN_MAXFILES	 	 7	/* int: max open files */
315#define	KERN_ARGMAX	 	 8	/* int: max arguments to exec */
316#define	KERN_SECURELVL	 	 9	/* int: system security level */
317#define	KERN_HOSTNAME		10	/* string: hostname */
318#define	KERN_HOSTID		11	/* int: host identifier */
319#define	KERN_CLOCKRATE		12	/* struct: struct clockrate */
320#define	KERN_VNODE		13	/* struct: vnode structures */
321#define	KERN_PROC		14	/* struct: process entries */
322#define	KERN_FILE		15	/* struct: file entries */
323#define	KERN_PROF		16	/* node: kernel profiling info */
324#define	KERN_POSIX1		17	/* int: POSIX.1 version */
325#define	KERN_NGROUPS		18	/* int: # of supplemental group ids */
326#define	KERN_JOB_CONTROL	19	/* int: is job control available */
327#define	KERN_SAVED_IDS		20	/* int: saved set-user/group-ID */
328#define	KERN_BOOTTIME		21	/* struct: time kernel was booted */
329#define KERN_NISDOMAINNAME	22	/* string: YP domain name */
330#define KERN_UPDATEINTERVAL	23	/* int: update process sleep time */
331#define KERN_OSRELDATE		24	/* int: OS release date */
332#define KERN_NTP_PLL		25	/* node: NTP PLL control */
333#define	KERN_BOOTFILE		26	/* string: name of booted kernel */
334#define	KERN_MAXFILESPERPROC	27	/* int: max open files per proc */
335#define	KERN_MAXPROCPERUID 	28	/* int: max processes per uid */
336#define KERN_DUMPDEV		29	/* dev_t: device to dump on */
337#define	KERN_IPC		30	/* node: anything related to IPC */
338#define	KERN_DUMMY		31	/* unused */
339#define	KERN_PS_STRINGS		32	/* int: address of PS_STRINGS */
340#define	KERN_USRSTACK		33	/* int: address of USRSTACK */
341#define	KERN_LOGSIGEXIT		34	/* int: do we log sigexit procs? */
342#define	KERN_IOV_MAX		35	/* int: value of UIO_MAXIOV */
343#define KERN_MAXID		36      /* number of valid kern ids */
344
345#define CTL_KERN_NAMES { \
346	{ 0, 0 }, \
347	{ "ostype", CTLTYPE_STRING }, \
348	{ "osrelease", CTLTYPE_STRING }, \
349	{ "osrevision", CTLTYPE_INT }, \
350	{ "version", CTLTYPE_STRING }, \
351	{ "maxvnodes", CTLTYPE_INT }, \
352	{ "maxproc", CTLTYPE_INT }, \
353	{ "maxfiles", CTLTYPE_INT }, \
354	{ "argmax", CTLTYPE_INT }, \
355	{ "securelevel", CTLTYPE_INT }, \
356	{ "hostname", CTLTYPE_STRING }, \
357	{ "hostid", CTLTYPE_UINT }, \
358	{ "clockrate", CTLTYPE_STRUCT }, \
359	{ "vnode", CTLTYPE_STRUCT }, \
360	{ "proc", CTLTYPE_STRUCT }, \
361	{ "file", CTLTYPE_STRUCT }, \
362	{ "profiling", CTLTYPE_NODE }, \
363	{ "posix1version", CTLTYPE_INT }, \
364	{ "ngroups", CTLTYPE_INT }, \
365	{ "job_control", CTLTYPE_INT }, \
366	{ "saved_ids", CTLTYPE_INT }, \
367	{ "boottime", CTLTYPE_STRUCT }, \
368	{ "nisdomainname", CTLTYPE_STRING }, \
369	{ "update", CTLTYPE_INT }, \
370	{ "osreldate", CTLTYPE_INT }, \
371	{ "ntp_pll", CTLTYPE_NODE }, \
372	{ "bootfile", CTLTYPE_STRING }, \
373	{ "maxfilesperproc", CTLTYPE_INT }, \
374	{ "maxprocperuid", CTLTYPE_INT }, \
375	{ "dumpdev", CTLTYPE_STRUCT }, /* we lie; don't print as int */ \
376	{ "ipc", CTLTYPE_NODE }, \
377	{ "dummy", CTLTYPE_INT }, \
378	{ "ps_strings", CTLTYPE_INT }, \
379	{ "usrstack", CTLTYPE_INT }, \
380	{ "logsigexit", CTLTYPE_INT }, \
381	{ "iov_max", CTLTYPE_INT }, \
382}
383
384/*
385 * CTL_VFS identifiers
386 */
387#define CTL_VFS_NAMES { \
388	{ "vfsconf", CTLTYPE_STRUCT }, \
389}
390
391/*
392 * KERN_PROC subtypes
393 */
394#define KERN_PROC_ALL		0	/* everything */
395#define	KERN_PROC_PID		1	/* by process id */
396#define	KERN_PROC_PGRP		2	/* by process group id */
397#define	KERN_PROC_SESSION	3	/* by session of pid */
398#define	KERN_PROC_TTY		4	/* by controlling tty */
399#define	KERN_PROC_UID		5	/* by effective uid */
400#define	KERN_PROC_RUID		6	/* by real uid */
401#define	KERN_PROC_ARGS		7	/* get/set arguments/proctitle */
402
403/*
404 * KERN_IPC identifiers
405 */
406#define KIPC_MAXSOCKBUF		1	/* int: max size of a socket buffer */
407#define	KIPC_SOCKBUF_WASTE	2	/* int: wastage factor in sockbuf */
408#define	KIPC_SOMAXCONN		3	/* int: max length of connection q */
409#define	KIPC_MAX_LINKHDR	4	/* int: max length of link header */
410#define	KIPC_MAX_PROTOHDR	5	/* int: max length of network header */
411#define	KIPC_MAX_HDR		6	/* int: max total length of headers */
412#define	KIPC_MAX_DATALEN	7	/* int: max length of data? */
413
414/*
415 * CTL_HW identifiers
416 */
417#define	HW_MACHINE	 1		/* string: machine class */
418#define	HW_MODEL	 2		/* string: specific machine model */
419#define	HW_NCPU		 3		/* int: number of cpus */
420#define	HW_BYTEORDER	 4		/* int: machine byte order */
421#define	HW_PHYSMEM	 5		/* int: total memory */
422#define	HW_USERMEM	 6		/* int: non-kernel memory */
423#define	HW_PAGESIZE	 7		/* int: software page size */
424#define	HW_DISKNAMES	 8		/* strings: disk drive names */
425#define	HW_DISKSTATS	 9		/* struct: diskstats[] */
426#define HW_FLOATINGPT	10		/* int: has HW floating point? */
427#define HW_MACHINE_ARCH	11		/* string: machine architecture */
428#define	HW_MAXID	12		/* number of valid hw ids */
429
430#define CTL_HW_NAMES { \
431	{ 0, 0 }, \
432	{ "machine", CTLTYPE_STRING }, \
433	{ "model", CTLTYPE_STRING }, \
434	{ "ncpu", CTLTYPE_INT }, \
435	{ "byteorder", CTLTYPE_INT }, \
436	{ "physmem", CTLTYPE_ULONG }, \
437	{ "usermem", CTLTYPE_ULONG }, \
438	{ "pagesize", CTLTYPE_INT }, \
439	{ "disknames", CTLTYPE_STRUCT }, \
440	{ "diskstats", CTLTYPE_STRUCT }, \
441	{ "floatingpoint", CTLTYPE_INT }, \
442}
443
444/*
445 * CTL_USER definitions
446 */
447#define	USER_CS_PATH		 1	/* string: _CS_PATH */
448#define	USER_BC_BASE_MAX	 2	/* int: BC_BASE_MAX */
449#define	USER_BC_DIM_MAX		 3	/* int: BC_DIM_MAX */
450#define	USER_BC_SCALE_MAX	 4	/* int: BC_SCALE_MAX */
451#define	USER_BC_STRING_MAX	 5	/* int: BC_STRING_MAX */
452#define	USER_COLL_WEIGHTS_MAX	 6	/* int: COLL_WEIGHTS_MAX */
453#define	USER_EXPR_NEST_MAX	 7	/* int: EXPR_NEST_MAX */
454#define	USER_LINE_MAX		 8	/* int: LINE_MAX */
455#define	USER_RE_DUP_MAX		 9	/* int: RE_DUP_MAX */
456#define	USER_POSIX2_VERSION	10	/* int: POSIX2_VERSION */
457#define	USER_POSIX2_C_BIND	11	/* int: POSIX2_C_BIND */
458#define	USER_POSIX2_C_DEV	12	/* int: POSIX2_C_DEV */
459#define	USER_POSIX2_CHAR_TERM	13	/* int: POSIX2_CHAR_TERM */
460#define	USER_POSIX2_FORT_DEV	14	/* int: POSIX2_FORT_DEV */
461#define	USER_POSIX2_FORT_RUN	15	/* int: POSIX2_FORT_RUN */
462#define	USER_POSIX2_LOCALEDEF	16	/* int: POSIX2_LOCALEDEF */
463#define	USER_POSIX2_SW_DEV	17	/* int: POSIX2_SW_DEV */
464#define	USER_POSIX2_UPE		18	/* int: POSIX2_UPE */
465#define	USER_STREAM_MAX		19	/* int: POSIX2_STREAM_MAX */
466#define	USER_TZNAME_MAX		20	/* int: POSIX2_TZNAME_MAX */
467#define	USER_MAXID		21	/* number of valid user ids */
468
469#define	CTL_USER_NAMES { \
470	{ 0, 0 }, \
471	{ "cs_path", CTLTYPE_STRING }, \
472	{ "bc_base_max", CTLTYPE_INT }, \
473	{ "bc_dim_max", CTLTYPE_INT }, \
474	{ "bc_scale_max", CTLTYPE_INT }, \
475	{ "bc_string_max", CTLTYPE_INT }, \
476	{ "coll_weights_max", CTLTYPE_INT }, \
477	{ "expr_nest_max", CTLTYPE_INT }, \
478	{ "line_max", CTLTYPE_INT }, \
479	{ "re_dup_max", CTLTYPE_INT }, \
480	{ "posix2_version", CTLTYPE_INT }, \
481	{ "posix2_c_bind", CTLTYPE_INT }, \
482	{ "posix2_c_dev", CTLTYPE_INT }, \
483	{ "posix2_char_term", CTLTYPE_INT }, \
484	{ "posix2_fort_dev", CTLTYPE_INT }, \
485	{ "posix2_fort_run", CTLTYPE_INT }, \
486	{ "posix2_localedef", CTLTYPE_INT }, \
487	{ "posix2_sw_dev", CTLTYPE_INT }, \
488	{ "posix2_upe", CTLTYPE_INT }, \
489	{ "stream_max", CTLTYPE_INT }, \
490	{ "tzname_max", CTLTYPE_INT }, \
491}
492
493#define CTL_P1003_1B_ASYNCHRONOUS_IO		1	/* boolean */
494#define CTL_P1003_1B_MAPPED_FILES		2	/* boolean */
495#define CTL_P1003_1B_MEMLOCK			3	/* boolean */
496#define CTL_P1003_1B_MEMLOCK_RANGE		4	/* boolean */
497#define CTL_P1003_1B_MEMORY_PROTECTION		5	/* boolean */
498#define CTL_P1003_1B_MESSAGE_PASSING		6	/* boolean */
499#define CTL_P1003_1B_PRIORITIZED_IO		7	/* boolean */
500#define CTL_P1003_1B_PRIORITY_SCHEDULING	8	/* boolean */
501#define CTL_P1003_1B_REALTIME_SIGNALS		9	/* boolean */
502#define CTL_P1003_1B_SEMAPHORES			10	/* boolean */
503#define CTL_P1003_1B_FSYNC			11	/* boolean */
504#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS	12	/* boolean */
505#define CTL_P1003_1B_SYNCHRONIZED_IO		13	/* boolean */
506#define CTL_P1003_1B_TIMERS			14	/* boolean */
507#define CTL_P1003_1B_AIO_LISTIO_MAX		15	/* int */
508#define CTL_P1003_1B_AIO_MAX			16	/* int */
509#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX		17	/* int */
510#define CTL_P1003_1B_DELAYTIMER_MAX		18	/* int */
511#define CTL_P1003_1B_MQ_OPEN_MAX		19	/* int */
512#define CTL_P1003_1B_PAGESIZE			20	/* int */
513#define CTL_P1003_1B_RTSIG_MAX			21	/* int */
514#define CTL_P1003_1B_SEM_NSEMS_MAX		22	/* int */
515#define CTL_P1003_1B_SEM_VALUE_MAX		23	/* int */
516#define CTL_P1003_1B_SIGQUEUE_MAX		24	/* int */
517#define CTL_P1003_1B_TIMER_MAX			25	/* int */
518
519#define CTL_P1003_1B_MAXID		26
520
521#define	CTL_P1003_1B_NAMES { \
522	{ 0, 0 }, \
523	{ "asynchronous_io", CTLTYPE_INT }, \
524	{ "mapped_files", CTLTYPE_INT }, \
525	{ "memlock", CTLTYPE_INT }, \
526	{ "memlock_range", CTLTYPE_INT }, \
527	{ "memory_protection", CTLTYPE_INT }, \
528	{ "message_passing", CTLTYPE_INT }, \
529	{ "prioritized_io", CTLTYPE_INT }, \
530	{ "priority_scheduling", CTLTYPE_INT }, \
531	{ "realtime_signals", CTLTYPE_INT }, \
532	{ "semaphores", CTLTYPE_INT }, \
533	{ "fsync", CTLTYPE_INT }, \
534	{ "shared_memory_objects", CTLTYPE_INT }, \
535	{ "synchronized_io", CTLTYPE_INT }, \
536	{ "timers", CTLTYPE_INT }, \
537	{ "aio_listio_max", CTLTYPE_INT }, \
538	{ "aio_max", CTLTYPE_INT }, \
539	{ "aio_prio_delta_max", CTLTYPE_INT }, \
540	{ "delaytimer_max", CTLTYPE_INT }, \
541	{ "mq_open_max", CTLTYPE_INT }, \
542	{ "pagesize", CTLTYPE_INT }, \
543	{ "rtsig_max", CTLTYPE_INT }, \
544	{ "nsems_max", CTLTYPE_INT }, \
545	{ "sem_value_max", CTLTYPE_INT }, \
546	{ "sigqueue_max", CTLTYPE_INT }, \
547	{ "timer_max", CTLTYPE_INT }, \
548}
549
550#ifdef _KERNEL
551
552/*
553 * Declare some common oids.
554 */
555extern struct sysctl_oid_list sysctl__children;
556SYSCTL_DECL(_kern);
557SYSCTL_DECL(_sysctl);
558SYSCTL_DECL(_vm);
559SYSCTL_DECL(_vfs);
560SYSCTL_DECL(_net);
561SYSCTL_DECL(_debug);
562SYSCTL_DECL(_debug_sizeof);
563SYSCTL_DECL(_hw);
564SYSCTL_DECL(_machdep);
565SYSCTL_DECL(_user);
566SYSCTL_DECL(_compat);
567
568extern char	machine[];
569extern char	osrelease[];
570extern char	ostype[];
571
572/* Dynamic oid handling */
573struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
574		struct sysctl_oid_list *parent, int nbr, const char *name,
575		int kind, void *arg1, int arg2,
576		int (*handler) (SYSCTL_HANDLER_ARGS),
577		const char *fmt, const char *descr);
578int	sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
579int	sysctl_ctx_init(struct sysctl_ctx_list *clist);
580int	sysctl_ctx_free(struct sysctl_ctx_list *clist);
581struct	sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
582		struct sysctl_oid *oidp);
583struct	sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
584		struct sysctl_oid *oidp);
585int	sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
586		struct sysctl_oid *oidp);
587
588int	kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
589		      size_t *oldlenp, void *new, size_t newlen,
590		      size_t *retval);
591int	kernel_sysctlbyname(struct thread *td, char *name,
592		void *old, size_t *oldlenp, void *new, size_t newlen,
593		size_t *retval);
594int	userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
595			size_t *oldlenp, int inkernel, void *new, size_t newlen,
596			size_t *retval);
597int	sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
598			int *nindx, struct sysctl_req *req);
599
600#else	/* !_KERNEL */
601#include <sys/cdefs.h>
602
603__BEGIN_DECLS
604int	sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
605int	sysctlbyname __P((const char *, void *, size_t *, void *, size_t));
606int	sysctlnametomib __P((const char *, int *, size_t *));
607__END_DECLS
608#endif	/* _KERNEL */
609
610#endif	/* !_SYS_SYSCTL_H_ */
611