sysctl.h revision 170288
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: head/sys/sys/sysctl.h 170288 2007-06-04 18:14:28Z dwmalone $
34 */
35
36#ifndef _SYS_SYSCTL_H_
37#define	_SYS_SYSCTL_H_
38
39#include <sys/queue.h>
40
41struct 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 */
60struct 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 */
132struct 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
147SLIST_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 */
153struct 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
170int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
171int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
172int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
173int sysctl_handle_quad(SYSCTL_HANDLER_ARGS);
174int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS);
175int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
176int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
177
178/*
179 * These functions are used to add/remove an oid from the mib.
180 */
181void sysctl_register_oid(struct sysctl_oid *oidp);
182void sysctl_unregister_oid(struct sysctl_oid *oidp);
183
184/* Declare a static oid to allow child oids to be added to it. */
185#define SYSCTL_DECL(name)					\
186	extern struct sysctl_oid_list sysctl_##name##_children
187
188/* Hide these in macros */
189#define	SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
190	(oid_ptr)->oid_arg1
191#define	SYSCTL_CHILDREN_SET(oid_ptr, val) \
192	(oid_ptr)->oid_arg1 = (val);
193#define	SYSCTL_STATIC_CHILDREN(oid_name) \
194	(&sysctl_##oid_name##_children)
195
196/* === Structs and macros related to context handling === */
197
198/* All dynamically created sysctls can be tracked in a context list. */
199struct sysctl_ctx_entry {
200	struct sysctl_oid *entry;
201	TAILQ_ENTRY(sysctl_ctx_entry) link;
202};
203
204TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
205
206#define SYSCTL_NODE_CHILDREN(parent, name) \
207	sysctl_##parent##_##name##_children
208
209#ifndef NO_SYSCTL_DESCR
210#define __DESCR(d) d
211#else
212#define __DESCR(d) ""
213#endif
214
215/* This constructs a "raw" MIB oid. */
216#define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
217	static struct sysctl_oid sysctl__##parent##_##name = {		 \
218		&sysctl_##parent##_children, { 0 },			 \
219		nbr, kind, a1, a2, #name, handler, fmt, 0, __DESCR(descr) }; \
220	DATA_SET(sysctl_set, sysctl__##parent##_##name)
221
222#define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
223	sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr))
224
225/* This constructs a node from which other oids can hang. */
226#define SYSCTL_NODE(parent, nbr, name, access, handler, descr)		    \
227	struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name);	    \
228	SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access),		    \
229		   (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, \
230		   "N", descr)
231
232#define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr)	    \
233	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access),	    \
234	0, 0, handler, "N", __DESCR(descr))
235
236/* Oid for a string.  len can be 0 to indicate '\0' termination. */
237#define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
238	SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
239		arg, len, sysctl_handle_string, "A", descr)
240
241#define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr)  \
242	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access),	    \
243	arg, len, sysctl_handle_string, "A", __DESCR(descr))
244
245/* Oid for an int.  If ptr is NULL, val is returned. */
246#define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
247	SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|(access), \
248		ptr, val, sysctl_handle_int, "I", descr)
249
250#define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr)	    \
251	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|(access),	    \
252	ptr, val, sysctl_handle_int, "I", __DESCR(descr))
253
254/* Oid for an unsigned int.  If ptr is NULL, val is returned. */
255#define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
256	SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \
257		ptr, val, sysctl_handle_int, "IU", descr)
258
259#define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr)    \
260	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access),	    \
261	ptr, val, sysctl_handle_int, "IU", __DESCR(descr))
262
263#define SYSCTL_XINT(parent, nbr, name, access, ptr, val, descr) \
264	SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \
265		ptr, val, sysctl_handle_int, "IX", descr)
266
267#define SYSCTL_ADD_XINT(ctx, parent, nbr, name, access, ptr, val, descr)    \
268	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access),	    \
269	ptr, val, sysctl_handle_int, "IX", __DESCR(descr))
270
271/* Oid for a long.  The pointer must be non NULL. */
272#define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
273	SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|(access), \
274		ptr, val, sysctl_handle_long, "L", descr)
275
276#define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr)	    \
277	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|(access),	    \
278	ptr, 0, sysctl_handle_long, "L", __DESCR(descr))
279
280/* Oid for an unsigned long.  The pointer must be non NULL. */
281#define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
282	SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \
283		ptr, val, sysctl_handle_long, "LU", __DESCR(descr))
284
285#define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr)	    \
286	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access),	    \
287	ptr, 0, sysctl_handle_long, "LU", __DESCR(descr))
288
289#define SYSCTL_XLONG(parent, nbr, name, access, ptr, val, descr) \
290	SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \
291		ptr, val, sysctl_handle_long, "LX", __DESCR(descr))
292
293#define SYSCTL_ADD_XLONG(ctx, parent, nbr, name, access, ptr, descr)	    \
294	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access),	    \
295	ptr, 0, sysctl_handle_long, "LX", __DESCR(descr))
296
297/* Oid for an opaque object.  Specified by a pointer and a length. */
298#define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
299	SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
300		ptr, len, sysctl_handle_opaque, fmt, descr)
301
302#define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
303	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access),	    \
304	ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr))
305
306/* Oid for a struct.  Specified by a pointer and a type. */
307#define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
308	SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
309		ptr, sizeof(struct type), sysctl_handle_opaque, \
310		"S," #type, descr)
311
312#define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
313	sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access),	    \
314	ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr))
315
316/* Oid for a procedure.  Specified by a pointer and an arg. */
317#define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
318	SYSCTL_OID(parent, nbr, name, (access), \
319		ptr, arg, handler, fmt, descr)
320
321#define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
322	sysctl_add_oid(ctx, parent, nbr, name, (access),			    \
323	ptr, arg, handler, fmt, __DESCR(descr))
324
325#endif /* _KERNEL */
326
327/*
328 * Top-level identifiers
329 */
330#define	CTL_UNSPEC	0		/* unused */
331#define	CTL_KERN	1		/* "high kernel": proc, limits */
332#define	CTL_VM		2		/* virtual memory */
333#define	CTL_VFS		3		/* filesystem, mount type is next */
334#define	CTL_NET		4		/* network, see socket.h */
335#define	CTL_DEBUG	5		/* debugging parameters */
336#define	CTL_HW		6		/* generic cpu/io */
337#define	CTL_MACHDEP	7		/* machine dependent */
338#define	CTL_USER	8		/* user-level */
339#define	CTL_P1003_1B	9		/* POSIX 1003.1B */
340#define	CTL_MAXID	10		/* number of valid top-level ids */
341
342#define CTL_NAMES { \
343	{ 0, 0 }, \
344	{ "kern", CTLTYPE_NODE }, \
345	{ "vm", CTLTYPE_NODE }, \
346	{ "vfs", CTLTYPE_NODE }, \
347	{ "net", CTLTYPE_NODE }, \
348	{ "debug", CTLTYPE_NODE }, \
349	{ "hw", CTLTYPE_NODE }, \
350	{ "machdep", CTLTYPE_NODE }, \
351	{ "user", CTLTYPE_NODE }, \
352	{ "p1003_1b", CTLTYPE_NODE }, \
353}
354
355/*
356 * CTL_KERN identifiers
357 */
358#define	KERN_OSTYPE	 	 1	/* string: system version */
359#define	KERN_OSRELEASE	 	 2	/* string: system release */
360#define	KERN_OSREV	 	 3	/* int: system revision */
361#define	KERN_VERSION	 	 4	/* string: compile time info */
362#define	KERN_MAXVNODES	 	 5	/* int: max vnodes */
363#define	KERN_MAXPROC	 	 6	/* int: max processes */
364#define	KERN_MAXFILES	 	 7	/* int: max open files */
365#define	KERN_ARGMAX	 	 8	/* int: max arguments to exec */
366#define	KERN_SECURELVL	 	 9	/* int: system security level */
367#define	KERN_HOSTNAME		10	/* string: hostname */
368#define	KERN_HOSTID		11	/* int: host identifier */
369#define	KERN_CLOCKRATE		12	/* struct: struct clockrate */
370#define	KERN_VNODE		13	/* struct: vnode structures */
371#define	KERN_PROC		14	/* struct: process entries */
372#define	KERN_FILE		15	/* struct: file entries */
373#define	KERN_PROF		16	/* node: kernel profiling info */
374#define	KERN_POSIX1		17	/* int: POSIX.1 version */
375#define	KERN_NGROUPS		18	/* int: # of supplemental group ids */
376#define	KERN_JOB_CONTROL	19	/* int: is job control available */
377#define	KERN_SAVED_IDS		20	/* int: saved set-user/group-ID */
378#define	KERN_BOOTTIME		21	/* struct: time kernel was booted */
379#define KERN_NISDOMAINNAME	22	/* string: YP domain name */
380#define KERN_UPDATEINTERVAL	23	/* int: update process sleep time */
381#define KERN_OSRELDATE		24	/* int: kernel release date */
382#define KERN_NTP_PLL		25	/* node: NTP PLL control */
383#define	KERN_BOOTFILE		26	/* string: name of booted kernel */
384#define	KERN_MAXFILESPERPROC	27	/* int: max open files per proc */
385#define	KERN_MAXPROCPERUID 	28	/* int: max processes per uid */
386#define KERN_DUMPDEV		29	/* struct cdev *: device to dump on */
387#define	KERN_IPC		30	/* node: anything related to IPC */
388#define	KERN_DUMMY		31	/* unused */
389#define	KERN_PS_STRINGS		32	/* int: address of PS_STRINGS */
390#define	KERN_USRSTACK		33	/* int: address of USRSTACK */
391#define	KERN_LOGSIGEXIT		34	/* int: do we log sigexit procs? */
392#define	KERN_IOV_MAX		35	/* int: value of UIO_MAXIOV */
393#define	KERN_HOSTUUID		36	/* string: host UUID identifier */
394#define	KERN_ARND		37	/* int: from arc4rand() */
395#define	KERN_MAXID		38	/* number of valid kern ids */
396
397#define CTL_KERN_NAMES { \
398	{ 0, 0 }, \
399	{ "ostype", CTLTYPE_STRING }, \
400	{ "osrelease", CTLTYPE_STRING }, \
401	{ "osrevision", CTLTYPE_INT }, \
402	{ "version", CTLTYPE_STRING }, \
403	{ "maxvnodes", CTLTYPE_INT }, \
404	{ "maxproc", CTLTYPE_INT }, \
405	{ "maxfiles", CTLTYPE_INT }, \
406	{ "argmax", CTLTYPE_INT }, \
407	{ "securelevel", CTLTYPE_INT }, \
408	{ "hostname", CTLTYPE_STRING }, \
409	{ "hostid", CTLTYPE_UINT }, \
410	{ "clockrate", CTLTYPE_STRUCT }, \
411	{ "vnode", CTLTYPE_STRUCT }, \
412	{ "proc", CTLTYPE_STRUCT }, \
413	{ "file", CTLTYPE_STRUCT }, \
414	{ "profiling", CTLTYPE_NODE }, \
415	{ "posix1version", CTLTYPE_INT }, \
416	{ "ngroups", CTLTYPE_INT }, \
417	{ "job_control", CTLTYPE_INT }, \
418	{ "saved_ids", CTLTYPE_INT }, \
419	{ "boottime", CTLTYPE_STRUCT }, \
420	{ "nisdomainname", CTLTYPE_STRING }, \
421	{ "update", CTLTYPE_INT }, \
422	{ "osreldate", CTLTYPE_INT }, \
423	{ "ntp_pll", CTLTYPE_NODE }, \
424	{ "bootfile", CTLTYPE_STRING }, \
425	{ "maxfilesperproc", CTLTYPE_INT }, \
426	{ "maxprocperuid", CTLTYPE_INT }, \
427	{ "ipc", CTLTYPE_NODE }, \
428	{ "dummy", CTLTYPE_INT }, \
429	{ "ps_strings", CTLTYPE_INT }, \
430	{ "usrstack", CTLTYPE_INT }, \
431	{ "logsigexit", CTLTYPE_INT }, \
432	{ "iov_max", CTLTYPE_INT }, \
433	{ "hostuuid", CTLTYPE_STRING }, \
434}
435
436/*
437 * CTL_VFS identifiers
438 */
439#define CTL_VFS_NAMES { \
440	{ "vfsconf", CTLTYPE_STRUCT }, \
441}
442
443/*
444 * KERN_PROC subtypes
445 */
446#define KERN_PROC_ALL		0	/* everything */
447#define	KERN_PROC_PID		1	/* by process id */
448#define	KERN_PROC_PGRP		2	/* by process group id */
449#define	KERN_PROC_SESSION	3	/* by session of pid */
450#define	KERN_PROC_TTY		4	/* by controlling tty */
451#define	KERN_PROC_UID		5	/* by effective uid */
452#define	KERN_PROC_RUID		6	/* by real uid */
453#define	KERN_PROC_ARGS		7	/* get/set arguments/proctitle */
454#define	KERN_PROC_PROC		8	/* only return procs */
455#define	KERN_PROC_SV_NAME	9	/* get syscall vector name */
456#define	KERN_PROC_RGID		10	/* by real group id */
457#define	KERN_PROC_GID		11	/* by effective group id */
458#define	KERN_PROC_PATHNAME	12	/* path to executable */
459#define	KERN_PROC_INC_THREAD	0x10	/*
460					 * modifier for pid, pgrp, tty,
461					 * uid, ruid, gid, rgid and proc
462					 */
463
464/*
465 * KERN_IPC identifiers
466 */
467#define KIPC_MAXSOCKBUF		1	/* int: max size of a socket buffer */
468#define	KIPC_SOCKBUF_WASTE	2	/* int: wastage factor in sockbuf */
469#define	KIPC_SOMAXCONN		3	/* int: max length of connection q */
470#define	KIPC_MAX_LINKHDR	4	/* int: max length of link header */
471#define	KIPC_MAX_PROTOHDR	5	/* int: max length of network header */
472#define	KIPC_MAX_HDR		6	/* int: max total length of headers */
473#define	KIPC_MAX_DATALEN	7	/* int: max length of data? */
474
475/*
476 * CTL_HW identifiers
477 */
478#define	HW_MACHINE	 1		/* string: machine class */
479#define	HW_MODEL	 2		/* string: specific machine model */
480#define	HW_NCPU		 3		/* int: number of cpus */
481#define	HW_BYTEORDER	 4		/* int: machine byte order */
482#define	HW_PHYSMEM	 5		/* int: total memory */
483#define	HW_USERMEM	 6		/* int: non-kernel memory */
484#define	HW_PAGESIZE	 7		/* int: software page size */
485#define	HW_DISKNAMES	 8		/* strings: disk drive names */
486#define	HW_DISKSTATS	 9		/* struct: diskstats[] */
487#define HW_FLOATINGPT	10		/* int: has HW floating point? */
488#define HW_MACHINE_ARCH	11		/* string: machine architecture */
489#define	HW_REALMEM	12		/* int: 'real' memory */
490#define	HW_MAXID	13		/* number of valid hw ids */
491
492#define CTL_HW_NAMES { \
493	{ 0, 0 }, \
494	{ "machine", CTLTYPE_STRING }, \
495	{ "model", CTLTYPE_STRING }, \
496	{ "ncpu", CTLTYPE_INT }, \
497	{ "byteorder", CTLTYPE_INT }, \
498	{ "physmem", CTLTYPE_ULONG }, \
499	{ "usermem", CTLTYPE_ULONG }, \
500	{ "pagesize", CTLTYPE_INT }, \
501	{ "disknames", CTLTYPE_STRUCT }, \
502	{ "diskstats", CTLTYPE_STRUCT }, \
503	{ "floatingpoint", CTLTYPE_INT }, \
504	{ "realmem", CTLTYPE_ULONG }, \
505}
506
507/*
508 * CTL_USER definitions
509 */
510#define	USER_CS_PATH		 1	/* string: _CS_PATH */
511#define	USER_BC_BASE_MAX	 2	/* int: BC_BASE_MAX */
512#define	USER_BC_DIM_MAX		 3	/* int: BC_DIM_MAX */
513#define	USER_BC_SCALE_MAX	 4	/* int: BC_SCALE_MAX */
514#define	USER_BC_STRING_MAX	 5	/* int: BC_STRING_MAX */
515#define	USER_COLL_WEIGHTS_MAX	 6	/* int: COLL_WEIGHTS_MAX */
516#define	USER_EXPR_NEST_MAX	 7	/* int: EXPR_NEST_MAX */
517#define	USER_LINE_MAX		 8	/* int: LINE_MAX */
518#define	USER_RE_DUP_MAX		 9	/* int: RE_DUP_MAX */
519#define	USER_POSIX2_VERSION	10	/* int: POSIX2_VERSION */
520#define	USER_POSIX2_C_BIND	11	/* int: POSIX2_C_BIND */
521#define	USER_POSIX2_C_DEV	12	/* int: POSIX2_C_DEV */
522#define	USER_POSIX2_CHAR_TERM	13	/* int: POSIX2_CHAR_TERM */
523#define	USER_POSIX2_FORT_DEV	14	/* int: POSIX2_FORT_DEV */
524#define	USER_POSIX2_FORT_RUN	15	/* int: POSIX2_FORT_RUN */
525#define	USER_POSIX2_LOCALEDEF	16	/* int: POSIX2_LOCALEDEF */
526#define	USER_POSIX2_SW_DEV	17	/* int: POSIX2_SW_DEV */
527#define	USER_POSIX2_UPE		18	/* int: POSIX2_UPE */
528#define	USER_STREAM_MAX		19	/* int: POSIX2_STREAM_MAX */
529#define	USER_TZNAME_MAX		20	/* int: POSIX2_TZNAME_MAX */
530#define	USER_MAXID		21	/* number of valid user ids */
531
532#define	CTL_USER_NAMES { \
533	{ 0, 0 }, \
534	{ "cs_path", CTLTYPE_STRING }, \
535	{ "bc_base_max", CTLTYPE_INT }, \
536	{ "bc_dim_max", CTLTYPE_INT }, \
537	{ "bc_scale_max", CTLTYPE_INT }, \
538	{ "bc_string_max", CTLTYPE_INT }, \
539	{ "coll_weights_max", CTLTYPE_INT }, \
540	{ "expr_nest_max", CTLTYPE_INT }, \
541	{ "line_max", CTLTYPE_INT }, \
542	{ "re_dup_max", CTLTYPE_INT }, \
543	{ "posix2_version", CTLTYPE_INT }, \
544	{ "posix2_c_bind", CTLTYPE_INT }, \
545	{ "posix2_c_dev", CTLTYPE_INT }, \
546	{ "posix2_char_term", CTLTYPE_INT }, \
547	{ "posix2_fort_dev", CTLTYPE_INT }, \
548	{ "posix2_fort_run", CTLTYPE_INT }, \
549	{ "posix2_localedef", CTLTYPE_INT }, \
550	{ "posix2_sw_dev", CTLTYPE_INT }, \
551	{ "posix2_upe", CTLTYPE_INT }, \
552	{ "stream_max", CTLTYPE_INT }, \
553	{ "tzname_max", CTLTYPE_INT }, \
554}
555
556#define CTL_P1003_1B_ASYNCHRONOUS_IO		1	/* boolean */
557#define CTL_P1003_1B_MAPPED_FILES		2	/* boolean */
558#define CTL_P1003_1B_MEMLOCK			3	/* boolean */
559#define CTL_P1003_1B_MEMLOCK_RANGE		4	/* boolean */
560#define CTL_P1003_1B_MEMORY_PROTECTION		5	/* boolean */
561#define CTL_P1003_1B_MESSAGE_PASSING		6	/* boolean */
562#define CTL_P1003_1B_PRIORITIZED_IO		7	/* boolean */
563#define CTL_P1003_1B_PRIORITY_SCHEDULING	8	/* boolean */
564#define CTL_P1003_1B_REALTIME_SIGNALS		9	/* boolean */
565#define CTL_P1003_1B_SEMAPHORES			10	/* boolean */
566#define CTL_P1003_1B_FSYNC			11	/* boolean */
567#define CTL_P1003_1B_SHARED_MEMORY_OBJECTS	12	/* boolean */
568#define CTL_P1003_1B_SYNCHRONIZED_IO		13	/* boolean */
569#define CTL_P1003_1B_TIMERS			14	/* boolean */
570#define CTL_P1003_1B_AIO_LISTIO_MAX		15	/* int */
571#define CTL_P1003_1B_AIO_MAX			16	/* int */
572#define CTL_P1003_1B_AIO_PRIO_DELTA_MAX		17	/* int */
573#define CTL_P1003_1B_DELAYTIMER_MAX		18	/* int */
574#define CTL_P1003_1B_MQ_OPEN_MAX		19	/* int */
575#define CTL_P1003_1B_PAGESIZE			20	/* int */
576#define CTL_P1003_1B_RTSIG_MAX			21	/* int */
577#define CTL_P1003_1B_SEM_NSEMS_MAX		22	/* int */
578#define CTL_P1003_1B_SEM_VALUE_MAX		23	/* int */
579#define CTL_P1003_1B_SIGQUEUE_MAX		24	/* int */
580#define CTL_P1003_1B_TIMER_MAX			25	/* int */
581
582#define CTL_P1003_1B_MAXID		26
583
584#define	CTL_P1003_1B_NAMES { \
585	{ 0, 0 }, \
586	{ "asynchronous_io", CTLTYPE_INT }, \
587	{ "mapped_files", CTLTYPE_INT }, \
588	{ "memlock", CTLTYPE_INT }, \
589	{ "memlock_range", CTLTYPE_INT }, \
590	{ "memory_protection", CTLTYPE_INT }, \
591	{ "message_passing", CTLTYPE_INT }, \
592	{ "prioritized_io", CTLTYPE_INT }, \
593	{ "priority_scheduling", CTLTYPE_INT }, \
594	{ "realtime_signals", CTLTYPE_INT }, \
595	{ "semaphores", CTLTYPE_INT }, \
596	{ "fsync", CTLTYPE_INT }, \
597	{ "shared_memory_objects", CTLTYPE_INT }, \
598	{ "synchronized_io", CTLTYPE_INT }, \
599	{ "timers", CTLTYPE_INT }, \
600	{ "aio_listio_max", CTLTYPE_INT }, \
601	{ "aio_max", CTLTYPE_INT }, \
602	{ "aio_prio_delta_max", CTLTYPE_INT }, \
603	{ "delaytimer_max", CTLTYPE_INT }, \
604	{ "mq_open_max", CTLTYPE_INT }, \
605	{ "pagesize", CTLTYPE_INT }, \
606	{ "rtsig_max", CTLTYPE_INT }, \
607	{ "nsems_max", CTLTYPE_INT }, \
608	{ "sem_value_max", CTLTYPE_INT }, \
609	{ "sigqueue_max", CTLTYPE_INT }, \
610	{ "timer_max", CTLTYPE_INT }, \
611}
612
613#ifdef _KERNEL
614
615/*
616 * Declare some common oids.
617 */
618extern struct sysctl_oid_list sysctl__children;
619SYSCTL_DECL(_kern);
620SYSCTL_DECL(_kern_ipc);
621SYSCTL_DECL(_sysctl);
622SYSCTL_DECL(_vm);
623SYSCTL_DECL(_vm_stats);
624SYSCTL_DECL(_vm_stats_misc);
625SYSCTL_DECL(_vfs);
626SYSCTL_DECL(_net);
627SYSCTL_DECL(_debug);
628SYSCTL_DECL(_debug_sizeof);
629SYSCTL_DECL(_hw);
630SYSCTL_DECL(_hw_bus);
631SYSCTL_DECL(_machdep);
632SYSCTL_DECL(_user);
633SYSCTL_DECL(_compat);
634SYSCTL_DECL(_regression);
635SYSCTL_DECL(_security);
636SYSCTL_DECL(_security_bsd);
637
638extern char	machine[];
639extern char	osrelease[];
640extern char	ostype[];
641extern char	kern_ident[];
642
643/* Dynamic oid handling */
644struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
645		struct sysctl_oid_list *parent, int nbr, const char *name,
646		int kind, void *arg1, int arg2,
647		int (*handler) (SYSCTL_HANDLER_ARGS),
648		const char *fmt, const char *descr);
649int	sysctl_move_oid(struct sysctl_oid *oidp,
650		struct sysctl_oid_list *parent);
651int	sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
652int	sysctl_ctx_init(struct sysctl_ctx_list *clist);
653int	sysctl_ctx_free(struct sysctl_ctx_list *clist);
654struct	sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
655		struct sysctl_oid *oidp);
656struct	sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
657		struct sysctl_oid *oidp);
658int	sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
659		struct sysctl_oid *oidp);
660
661int	kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
662		      size_t *oldlenp, void *new, size_t newlen,
663		      size_t *retval, int flags);
664int	kernel_sysctlbyname(struct thread *td, char *name,
665		void *old, size_t *oldlenp, void *new, size_t newlen,
666		size_t *retval, int flags);
667int	userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
668			size_t *oldlenp, int inkernel, void *new, size_t newlen,
669			size_t *retval, int flags);
670int	sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
671			int *nindx, struct sysctl_req *req);
672int	sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
673
674#else	/* !_KERNEL */
675#include <sys/cdefs.h>
676
677__BEGIN_DECLS
678int	sysctl(int *, u_int, void *, size_t *, void *, size_t);
679int	sysctlbyname(const char *, void *, size_t *, void *, size_t);
680int	sysctlnametomib(const char *, int *, size_t *);
681__END_DECLS
682#endif	/* _KERNEL */
683
684#endif	/* !_SYS_SYSCTL_H_ */
685