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 * 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: releng/7.4/sys/sys/sysctl.h 192491 2009-05-20 22:28:39Z kmacy $
34 */
35
36 #ifndef _SYS_SYSCTL_H_
37 #define _SYS_SYSCTL_H_
38
39 #include <sys/queue.h>
40
41 struct 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 */
60 struct 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_MPSAFE 0x00040000 /* Handler is MP safe */
88 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
89
90 /*
91 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
92 *
93 * Secure when the securelevel is raised to at least N.
94 */
95 #define CTLSHIFT_SECURE 20
96 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
97 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
98 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
99
100 /*
101 * USE THIS instead of a hardwired number from the categories below
102 * to get dynamically assigned sysctl entries using the linker-set
103 * technology. This is the way nearly all new sysctl variables should
104 * be implemented.
105 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
106 */
107 #define OID_AUTO (-1)
108
109 /*
110 * The starting number for dynamically-assigned entries. WARNING!
111 * ALL static sysctl entries should have numbers LESS than this!
112 */
113 #define CTL_AUTO_START 0x100
114
115 #ifdef _KERNEL
116 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \
117 struct sysctl_req *req
118
119 /* definitions for sysctl_req 'lock' member */
120 #define REQ_UNLOCKED 0 /* not locked and not wired */
121 #define REQ_LOCKED 1 /* locked and not wired */
122 #define REQ_WIRED 2 /* locked and wired */
123
124 /* definitions for sysctl_req 'flags' member */
125 #if defined(__amd64__) || defined(__ia64__)
126 #define SCTL_MASK32 1 /* 32 bit emulation */
127 #endif
128
129 /*
130 * This describes the access space for a sysctl request. This is needed
131 * so that we can use the interface from the kernel or from user-space.
132 */
133 struct sysctl_req {
134 struct thread *td; /* used for access checking */
135 int lock; /* locking/wiring state */
136 void *oldptr;
137 size_t oldlen;
138 size_t oldidx;
139 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
140 void *newptr;
141 size_t newlen;
142 size_t newidx;
143 int (*newfunc)(struct sysctl_req *, void *, size_t);
144 size_t validlen;
145 int flags;
146 };
147
148 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
149
150 /*
151 * This describes one "oid" in the MIB tree. Potentially more nodes can
152 * be hidden behind it, expanded by the handler.
153 */
154 struct sysctl_oid {
155 struct sysctl_oid_list *oid_parent;
156 SLIST_ENTRY(sysctl_oid) oid_link;
157 int oid_number;
158 u_int oid_kind;
159 void *oid_arg1;
160 int oid_arg2;
161 const char *oid_name;
162 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
163 const char *oid_fmt;
164 int oid_refcnt;
165 const char *oid_descr;
166 };
167
168 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
169 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
170
171 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
172 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
173 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
174 int sysctl_handle_quad(SYSCTL_HANDLER_ARGS);
175 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS);
176 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
177 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
178
179 /*
180 * These functions are used to add/remove an oid from the mib.
181 */
182 void sysctl_register_oid(struct sysctl_oid *oidp);
183 void sysctl_unregister_oid(struct sysctl_oid *oidp);
184
185 /* Declare a static oid to allow child oids to be added to it. */
186 #define SYSCTL_DECL(name) \
187 extern struct sysctl_oid_list sysctl_##name##_children
188
189 /* Hide these in macros */
190 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
191 (oid_ptr)->oid_arg1
192 #define SYSCTL_CHILDREN_SET(oid_ptr, val) \
193 (oid_ptr)->oid_arg1 = (val);
194 #define SYSCTL_STATIC_CHILDREN(oid_name) \
195 (&sysctl_##oid_name##_children)
196
197 /* === Structs and macros related to context handling === */
198
199 /* All dynamically created sysctls can be tracked in a context list. */
200 struct sysctl_ctx_entry {
201 struct sysctl_oid *entry;
202 TAILQ_ENTRY(sysctl_ctx_entry) link;
203 };
204
205 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
206
207 #define SYSCTL_NODE_CHILDREN(parent, name) \
208 sysctl_##parent##_##name##_children
209
210 #ifndef NO_SYSCTL_DESCR
211 #define __DESCR(d) d
212 #else
213 #define __DESCR(d) ""
214 #endif
215
216 /* This constructs a "raw" MIB oid. */
217 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
218 static struct sysctl_oid sysctl__##parent##_##name = { \
219 &sysctl_##parent##_children, { 0 }, \
220 nbr, kind, a1, a2, #name, handler, fmt, 0, __DESCR(descr) }; \
221 DATA_SET(sysctl_set, sysctl__##parent##_##name)
222
223 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
224 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr))
225
226 /* This constructs a node from which other oids can hang. */
227 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
228 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \
229 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \
230 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, \
231 "N", descr)
232
233 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
234 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
235 0, 0, handler, "N", __DESCR(descr))
236
237 /* Oid for a string. len can be 0 to indicate '\0' termination. */
238 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
239 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
240 arg, len, sysctl_handle_string, "A", descr)
241
242 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
243 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
244 arg, len, sysctl_handle_string, "A", __DESCR(descr))
245
246 /* Oid for an int. If ptr is NULL, val is returned. */
247 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
248 SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|CTLFLAG_MPSAFE|(access), \
249 ptr, val, sysctl_handle_int, "I", descr)
250
251 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
252 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|CTLFLAG_MPSAFE|(access), \
253 ptr, val, sysctl_handle_int, "I", __DESCR(descr))
254
255 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
256 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
257 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \
258 ptr, val, sysctl_handle_int, "IU", descr)
259
260 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
261 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \
262 ptr, val, sysctl_handle_int, "IU", __DESCR(descr))
263
264 #define SYSCTL_XINT(parent, nbr, name, access, ptr, val, descr) \
265 SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \
266 ptr, val, sysctl_handle_int, "IX", descr)
267
268 #define SYSCTL_ADD_XINT(ctx, parent, nbr, name, access, ptr, val, descr) \
269 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|CTLFLAG_MPSAFE|(access), \
270 ptr, val, sysctl_handle_int, "IX", __DESCR(descr))
271
272 /* Oid for a long. The pointer must be non NULL. */
273 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
274 SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|CTLFLAG_MPSAFE|(access), \
275 ptr, val, sysctl_handle_long, "L", descr)
276
277 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
278 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|CTLFLAG_MPSAFE|(access), \
279 ptr, 0, sysctl_handle_long, "L", __DESCR(descr))
280
281 /* Oid for an unsigned long. The pointer must be non NULL. */
282 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
283 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \
284 ptr, val, sysctl_handle_long, "LU", __DESCR(descr))
285
286 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
287 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \
288 ptr, 0, sysctl_handle_long, "LU", __DESCR(descr))
289
290 #define SYSCTL_XLONG(parent, nbr, name, access, ptr, val, descr) \
291 SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \
292 ptr, val, sysctl_handle_long, "LX", __DESCR(descr))
293
294 #define SYSCTL_ADD_XLONG(ctx, parent, nbr, name, access, ptr, descr) \
295 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|CTLFLAG_MPSAFE|(access), \
296 ptr, 0, sysctl_handle_long, "LX", __DESCR(descr))
297
298 /* Oid for a quad. The pointer must be non NULL. */
299 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
300 SYSCTL_OID(parent, nbr, name, CTLTYPE_QUAD|CTLFLAG_MPSAFE|(access), \
301 ptr, val, sysctl_handle_quad, "Q", __DESCR(descr))
302
303 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \
304 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_QUAD|CTLFLAG_MPSAFE|(access), \
305 ptr, 0, sysctl_handle_quad, "Q", __DESCR(descr))
306
307 /* Oid for an opaque object. Specified by a pointer and a length. */
308 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
309 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
310 ptr, len, sysctl_handle_opaque, fmt, descr)
311
312 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
313 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
314 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr))
315
316 /* Oid for a struct. Specified by a pointer and a type. */
317 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
318 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
319 ptr, sizeof(struct type), sysctl_handle_opaque, \
320 "S," #type, descr)
321
322 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
323 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
324 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr))
325
326 /* Oid for a procedure. Specified by a pointer and an arg. */
327 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
328 SYSCTL_OID(parent, nbr, name, (access), \
329 ptr, arg, handler, fmt, descr)
330
331 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
332 sysctl_add_oid(ctx, parent, nbr, name, (access), \
333 ptr, arg, handler, fmt, __DESCR(descr))
334
335 /*
336 * A macro to generate a read-only sysctl to indicate the presense of optional
337 * kernel features.
338 */
339 #define FEATURE(name, desc) \
340 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD, 0, 1, desc)
341
342 #endif /* _KERNEL */
343
344 /*
345 * Top-level identifiers
346 */
347 #define CTL_UNSPEC 0 /* unused */
348 #define CTL_KERN 1 /* "high kernel": proc, limits */
349 #define CTL_VM 2 /* virtual memory */
350 #define CTL_VFS 3 /* filesystem, mount type is next */
351 #define CTL_NET 4 /* network, see socket.h */
352 #define CTL_DEBUG 5 /* debugging parameters */
353 #define CTL_HW 6 /* generic cpu/io */
354 #define CTL_MACHDEP 7 /* machine dependent */
355 #define CTL_USER 8 /* user-level */
356 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
357 #define CTL_MAXID 10 /* number of valid top-level ids */
358
359 #define CTL_NAMES { \
360 { 0, 0 }, \
361 { "kern", CTLTYPE_NODE }, \
362 { "vm", CTLTYPE_NODE }, \
363 { "vfs", CTLTYPE_NODE }, \
364 { "net", CTLTYPE_NODE }, \
365 { "debug", CTLTYPE_NODE }, \
366 { "hw", CTLTYPE_NODE }, \
367 { "machdep", CTLTYPE_NODE }, \
368 { "user", CTLTYPE_NODE }, \
369 { "p1003_1b", CTLTYPE_NODE }, \
370 }
371
372 /*
373 * CTL_KERN identifiers
374 */
375 #define KERN_OSTYPE 1 /* string: system version */
376 #define KERN_OSRELEASE 2 /* string: system release */
377 #define KERN_OSREV 3 /* int: system revision */
378 #define KERN_VERSION 4 /* string: compile time info */
379 #define KERN_MAXVNODES 5 /* int: max vnodes */
380 #define KERN_MAXPROC 6 /* int: max processes */
381 #define KERN_MAXFILES 7 /* int: max open files */
382 #define KERN_ARGMAX 8 /* int: max arguments to exec */
383 #define KERN_SECURELVL 9 /* int: system security level */
384 #define KERN_HOSTNAME 10 /* string: hostname */
385 #define KERN_HOSTID 11 /* int: host identifier */
386 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
387 #define KERN_VNODE 13 /* struct: vnode structures */
388 #define KERN_PROC 14 /* struct: process entries */
389 #define KERN_FILE 15 /* struct: file entries */
390 #define KERN_PROF 16 /* node: kernel profiling info */
391 #define KERN_POSIX1 17 /* int: POSIX.1 version */
392 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
393 #define KERN_JOB_CONTROL 19 /* int: is job control available */
394 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
395 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
396 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
397 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
398 #define KERN_OSRELDATE 24 /* int: kernel release date */
399 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
400 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
401 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
402 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
403 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
404 #define KERN_IPC 30 /* node: anything related to IPC */
405 #define KERN_DUMMY 31 /* unused */
406 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
407 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
408 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
409 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
410 #define KERN_HOSTUUID 36 /* string: host UUID identifier */
411 #define KERN_ARND 37 /* int: from arc4rand() */
412 #define KERN_MAXID 38 /* number of valid kern ids */
413
414 #define CTL_KERN_NAMES { \
415 { 0, 0 }, \
416 { "ostype", CTLTYPE_STRING }, \
417 { "osrelease", CTLTYPE_STRING }, \
418 { "osrevision", CTLTYPE_INT }, \
419 { "version", CTLTYPE_STRING }, \
420 { "maxvnodes", CTLTYPE_INT }, \
421 { "maxproc", CTLTYPE_INT }, \
422 { "maxfiles", CTLTYPE_INT }, \
423 { "argmax", CTLTYPE_INT }, \
424 { "securelevel", CTLTYPE_INT }, \
425 { "hostname", CTLTYPE_STRING }, \
426 { "hostid", CTLTYPE_UINT }, \
427 { "clockrate", CTLTYPE_STRUCT }, \
428 { "vnode", CTLTYPE_STRUCT }, \
429 { "proc", CTLTYPE_STRUCT }, \
430 { "file", CTLTYPE_STRUCT }, \
431 { "profiling", CTLTYPE_NODE }, \
432 { "posix1version", CTLTYPE_INT }, \
433 { "ngroups", CTLTYPE_INT }, \
434 { "job_control", CTLTYPE_INT }, \
435 { "saved_ids", CTLTYPE_INT }, \
436 { "boottime", CTLTYPE_STRUCT }, \
437 { "nisdomainname", CTLTYPE_STRING }, \
438 { "update", CTLTYPE_INT }, \
439 { "osreldate", CTLTYPE_INT }, \
440 { "ntp_pll", CTLTYPE_NODE }, \
441 { "bootfile", CTLTYPE_STRING }, \
442 { "maxfilesperproc", CTLTYPE_INT }, \
443 { "maxprocperuid", CTLTYPE_INT }, \
444 { "ipc", CTLTYPE_NODE }, \
445 { "dummy", CTLTYPE_INT }, \
446 { "ps_strings", CTLTYPE_INT }, \
447 { "usrstack", CTLTYPE_INT }, \
448 { "logsigexit", CTLTYPE_INT }, \
449 { "iov_max", CTLTYPE_INT }, \
450 { "hostuuid", CTLTYPE_STRING }, \
451 }
452
453 /*
454 * CTL_VFS identifiers
455 */
456 #define CTL_VFS_NAMES { \
457 { "vfsconf", CTLTYPE_STRUCT }, \
458 }
459
460 /*
461 * KERN_PROC subtypes
462 */
463 #define KERN_PROC_ALL 0 /* everything */
464 #define KERN_PROC_PID 1 /* by process id */
465 #define KERN_PROC_PGRP 2 /* by process group id */
466 #define KERN_PROC_SESSION 3 /* by session of pid */
467 #define KERN_PROC_TTY 4 /* by controlling tty */
468 #define KERN_PROC_UID 5 /* by effective uid */
469 #define KERN_PROC_RUID 6 /* by real uid */
470 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
471 #define KERN_PROC_PROC 8 /* only return procs */
472 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
473 #define KERN_PROC_RGID 10 /* by real group id */
474 #define KERN_PROC_GID 11 /* by effective group id */
475 #define KERN_PROC_PATHNAME 12 /* path to executable */
476 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */
477 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */
478 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */
479 #define KERN_PROC_INC_THREAD 0x10 /*
480 * modifier for pid, pgrp, tty,
481 * uid, ruid, gid, rgid and proc
482 * This effectively uses 16-31
483 */
484 #define KERN_PROC_VMMAP 32 /* VM map entries for process */
485 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */
486
487 /*
488 * KERN_IPC identifiers
489 */
490 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
491 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
492 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
493 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
494 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
495 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
496 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
497
498 /*
499 * CTL_HW identifiers
500 */
501 #define HW_MACHINE 1 /* string: machine class */
502 #define HW_MODEL 2 /* string: specific machine model */
503 #define HW_NCPU 3 /* int: number of cpus */
504 #define HW_BYTEORDER 4 /* int: machine byte order */
505 #define HW_PHYSMEM 5 /* int: total memory */
506 #define HW_USERMEM 6 /* int: non-kernel memory */
507 #define HW_PAGESIZE 7 /* int: software page size */
508 #define HW_DISKNAMES 8 /* strings: disk drive names */
509 #define HW_DISKSTATS 9 /* struct: diskstats[] */
510 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
511 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
512 #define HW_REALMEM 12 /* int: 'real' memory */
513 #define HW_MAXID 13 /* number of valid hw ids */
514
515 #define CTL_HW_NAMES { \
516 { 0, 0 }, \
517 { "machine", CTLTYPE_STRING }, \
518 { "model", CTLTYPE_STRING }, \
519 { "ncpu", CTLTYPE_INT }, \
520 { "byteorder", CTLTYPE_INT }, \
521 { "physmem", CTLTYPE_ULONG }, \
522 { "usermem", CTLTYPE_ULONG }, \
523 { "pagesize", CTLTYPE_INT }, \
524 { "disknames", CTLTYPE_STRUCT }, \
525 { "diskstats", CTLTYPE_STRUCT }, \
526 { "floatingpoint", CTLTYPE_INT }, \
527 { "realmem", CTLTYPE_ULONG }, \
528 }
529
530 /*
531 * CTL_USER definitions
532 */
533 #define USER_CS_PATH 1 /* string: _CS_PATH */
534 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
535 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
536 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
537 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
538 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
539 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
540 #define USER_LINE_MAX 8 /* int: LINE_MAX */
541 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
542 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
543 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
544 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
545 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
546 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
547 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
548 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
549 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
550 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
551 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
552 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
553 #define USER_MAXID 21 /* number of valid user ids */
554
555 #define CTL_USER_NAMES { \
556 { 0, 0 }, \
557 { "cs_path", CTLTYPE_STRING }, \
558 { "bc_base_max", CTLTYPE_INT }, \
559 { "bc_dim_max", CTLTYPE_INT }, \
560 { "bc_scale_max", CTLTYPE_INT }, \
561 { "bc_string_max", CTLTYPE_INT }, \
562 { "coll_weights_max", CTLTYPE_INT }, \
563 { "expr_nest_max", CTLTYPE_INT }, \
564 { "line_max", CTLTYPE_INT }, \
565 { "re_dup_max", CTLTYPE_INT }, \
566 { "posix2_version", CTLTYPE_INT }, \
567 { "posix2_c_bind", CTLTYPE_INT }, \
568 { "posix2_c_dev", CTLTYPE_INT }, \
569 { "posix2_char_term", CTLTYPE_INT }, \
570 { "posix2_fort_dev", CTLTYPE_INT }, \
571 { "posix2_fort_run", CTLTYPE_INT }, \
572 { "posix2_localedef", CTLTYPE_INT }, \
573 { "posix2_sw_dev", CTLTYPE_INT }, \
574 { "posix2_upe", CTLTYPE_INT }, \
575 { "stream_max", CTLTYPE_INT }, \
576 { "tzname_max", CTLTYPE_INT }, \
577 }
578
579 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
580 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
581 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
582 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
583 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
584 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
585 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
586 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
587 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
588 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
589 #define CTL_P1003_1B_FSYNC 11 /* boolean */
590 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
591 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
592 #define CTL_P1003_1B_TIMERS 14 /* boolean */
593 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
594 #define CTL_P1003_1B_AIO_MAX 16 /* int */
595 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
596 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
597 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
598 #define CTL_P1003_1B_PAGESIZE 20 /* int */
599 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
600 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
601 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
602 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
603 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
604
605 #define CTL_P1003_1B_MAXID 26
606
607 #define CTL_P1003_1B_NAMES { \
608 { 0, 0 }, \
609 { "asynchronous_io", CTLTYPE_INT }, \
610 { "mapped_files", CTLTYPE_INT }, \
611 { "memlock", CTLTYPE_INT }, \
612 { "memlock_range", CTLTYPE_INT }, \
613 { "memory_protection", CTLTYPE_INT }, \
614 { "message_passing", CTLTYPE_INT }, \
615 { "prioritized_io", CTLTYPE_INT }, \
616 { "priority_scheduling", CTLTYPE_INT }, \
617 { "realtime_signals", CTLTYPE_INT }, \
618 { "semaphores", CTLTYPE_INT }, \
619 { "fsync", CTLTYPE_INT }, \
620 { "shared_memory_objects", CTLTYPE_INT }, \
621 { "synchronized_io", CTLTYPE_INT }, \
622 { "timers", CTLTYPE_INT }, \
623 { "aio_listio_max", CTLTYPE_INT }, \
624 { "aio_max", CTLTYPE_INT }, \
625 { "aio_prio_delta_max", CTLTYPE_INT }, \
626 { "delaytimer_max", CTLTYPE_INT }, \
627 { "mq_open_max", CTLTYPE_INT }, \
628 { "pagesize", CTLTYPE_INT }, \
629 { "rtsig_max", CTLTYPE_INT }, \
630 { "nsems_max", CTLTYPE_INT }, \
631 { "sem_value_max", CTLTYPE_INT }, \
632 { "sigqueue_max", CTLTYPE_INT }, \
633 { "timer_max", CTLTYPE_INT }, \
634 }
635
636 #ifdef _KERNEL
637
638 /*
639 * Declare some common oids.
640 */
641 extern struct sysctl_oid_list sysctl__children;
642 SYSCTL_DECL(_kern);
643 SYSCTL_DECL(_kern_features);
644 SYSCTL_DECL(_kern_ipc);
645 SYSCTL_DECL(_kern_proc);
646 SYSCTL_DECL(_sysctl);
647 SYSCTL_DECL(_vm);
648 SYSCTL_DECL(_vm_stats);
649 SYSCTL_DECL(_vm_stats_misc);
650 SYSCTL_DECL(_vfs);
651 SYSCTL_DECL(_net);
652 SYSCTL_DECL(_debug);
653 SYSCTL_DECL(_debug_sizeof);
654 SYSCTL_DECL(_hw);
655 SYSCTL_DECL(_hw_bus);
656 SYSCTL_DECL(_machdep);
657 SYSCTL_DECL(_user);
658 SYSCTL_DECL(_compat);
659 SYSCTL_DECL(_regression);
660 SYSCTL_DECL(_security);
661 SYSCTL_DECL(_security_bsd);
662
663 extern char machine[];
664 extern char osrelease[];
665 extern char ostype[];
666 extern char kern_ident[];
667
668 /* Dynamic oid handling */
669 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
670 struct sysctl_oid_list *parent, int nbr, const char *name,
671 int kind, void *arg1, int arg2,
672 int (*handler) (SYSCTL_HANDLER_ARGS),
673 const char *fmt, const char *descr);
674 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name);
675 int sysctl_move_oid(struct sysctl_oid *oidp,
676 struct sysctl_oid_list *parent);
677 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
678 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
679 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
680 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
681 struct sysctl_oid *oidp);
682 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
683 struct sysctl_oid *oidp);
684 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
685 struct sysctl_oid *oidp);
686
687 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
688 size_t *oldlenp, void *new, size_t newlen,
689 size_t *retval, int flags);
690 int kernel_sysctlbyname(struct thread *td, char *name,
691 void *old, size_t *oldlenp, void *new, size_t newlen,
692 size_t *retval, int flags);
693 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
694 size_t *oldlenp, int inkernel, void *new, size_t newlen,
695 size_t *retval, int flags);
696 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
697 int *nindx, struct sysctl_req *req);
698 void sysctl_lock(void);
699 void sysctl_unlock(void);
700 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
701
702 #else /* !_KERNEL */
703 #include <sys/cdefs.h>
704
705 __BEGIN_DECLS
706 int sysctl(int *, u_int, void *, size_t *, void *, size_t);
707 int sysctlbyname(const char *, void *, size_t *, void *, size_t);
708 int sysctlnametomib(const char *, int *, size_t *);
709 __END_DECLS
710 #endif /* _KERNEL */
711
712 #endif /* !_SYS_SYSCTL_H_ */
Cache object: 74310cb5276b6fcbce154c4369e5590a
|