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 * $FreeBSD$
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_S64 4 /* name describes a signed 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 #define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */
76 #define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */
77 #define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */
78 #define CTLTYPE_S8 0xc /* name describes a signed 8-bit number */
79 #define CTLTYPE_S16 0xd /* name describes a signed 16-bit number */
80 #define CTLTYPE_S32 0xe /* name describes a signed 32-bit number */
81 #define CTLTYPE_U32 0xf /* name describes an unsigned 32-bit number */
82
83 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
84 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
85 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR)
86 #define CTLFLAG_DORMANT 0x20000000 /* This sysctl is not active yet */
87 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */
88 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */
89 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */
90 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */
91 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */
92 #define CTLMASK_SECURE 0x00F00000 /* Secure level */
93 #define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */
94 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
95 #define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN)
96 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */
97 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */
98 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */
99 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */
100 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */
101 #define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */
102 #define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */
103 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR)
104
105 /*
106 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
107 *
108 * Secure when the securelevel is raised to at least N.
109 */
110 #define CTLSHIFT_SECURE 20
111 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
112 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
113 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
114
115 /*
116 * USE THIS instead of a hardwired number from the categories below
117 * to get dynamically assigned sysctl entries using the linker-set
118 * technology. This is the way nearly all new sysctl variables should
119 * be implemented.
120 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
121 */
122 #define OID_AUTO (-1)
123
124 /*
125 * The starting number for dynamically-assigned entries. WARNING!
126 * ALL static sysctl entries should have numbers LESS than this!
127 */
128 #define CTL_AUTO_START 0x100
129
130 #ifdef _KERNEL
131 #include <sys/linker_set.h>
132
133 #ifdef KLD_MODULE
134 /* XXX allow overspecification of type in external kernel modules */
135 #define SYSCTL_CT_ASSERT_MASK CTLTYPE
136 #else
137 #define SYSCTL_CT_ASSERT_MASK 0
138 #endif
139
140 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \
141 intmax_t arg2, struct sysctl_req *req
142
143 /* definitions for sysctl_req 'lock' member */
144 #define REQ_UNWIRED 1
145 #define REQ_WIRED 2
146
147 /* definitions for sysctl_req 'flags' member */
148 #if defined(__amd64__) || defined(__powerpc64__) ||\
149 (defined(__mips__) && defined(__mips_n64))
150 #define SCTL_MASK32 1 /* 32 bit emulation */
151 #endif
152
153 /*
154 * This describes the access space for a sysctl request. This is needed
155 * so that we can use the interface from the kernel or from user-space.
156 */
157 struct sysctl_req {
158 struct thread *td; /* used for access checking */
159 int lock; /* wiring state */
160 void *oldptr;
161 size_t oldlen;
162 size_t oldidx;
163 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
164 void *newptr;
165 size_t newlen;
166 size_t newidx;
167 int (*newfunc)(struct sysctl_req *, void *, size_t);
168 size_t validlen;
169 int flags;
170 };
171
172 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
173
174 /*
175 * This describes one "oid" in the MIB tree. Potentially more nodes can
176 * be hidden behind it, expanded by the handler.
177 */
178 struct sysctl_oid {
179 struct sysctl_oid_list oid_children;
180 struct sysctl_oid_list *oid_parent;
181 SLIST_ENTRY(sysctl_oid) oid_link;
182 int oid_number;
183 u_int oid_kind;
184 void *oid_arg1;
185 intmax_t oid_arg2;
186 const char *oid_name;
187 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
188 const char *oid_fmt;
189 int oid_refcnt;
190 u_int oid_running;
191 const char *oid_descr;
192 };
193
194 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
195 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
196 #define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1)
197
198 int sysctl_handle_bool(SYSCTL_HANDLER_ARGS);
199 int sysctl_handle_8(SYSCTL_HANDLER_ARGS);
200 int sysctl_handle_16(SYSCTL_HANDLER_ARGS);
201 int sysctl_handle_32(SYSCTL_HANDLER_ARGS);
202 int sysctl_handle_64(SYSCTL_HANDLER_ARGS);
203 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
204 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
205 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
206 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
207 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
208 int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS);
209 int sysctl_handle_counter_u64_array(SYSCTL_HANDLER_ARGS);
210
211 int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS);
212 int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS);
213
214 int sysctl_sec_to_timeval(SYSCTL_HANDLER_ARGS);
215
216 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS);
217 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS);
218 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS);
219
220 /*
221 * These functions are used to add/remove an oid from the mib.
222 */
223 void sysctl_register_oid(struct sysctl_oid *oidp);
224 void sysctl_register_disabled_oid(struct sysctl_oid *oidp);
225 void sysctl_enable_oid(struct sysctl_oid *oidp);
226 void sysctl_unregister_oid(struct sysctl_oid *oidp);
227
228 /* Declare a static oid to allow child oids to be added to it. */
229 #define SYSCTL_DECL(name) \
230 extern struct sysctl_oid sysctl__##name
231
232 /* Hide these in macros. */
233 #define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children)
234 #define SYSCTL_PARENT(oid_ptr) \
235 (((oid_ptr)->oid_parent != &sysctl__children) ? \
236 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \
237 oid_children) : (struct sysctl_oid *)NULL)
238 #define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children)
239
240 /* === Structs and macros related to context handling. === */
241
242 /* All dynamically created sysctls can be tracked in a context list. */
243 struct sysctl_ctx_entry {
244 struct sysctl_oid *entry;
245 TAILQ_ENTRY(sysctl_ctx_entry) link;
246 };
247
248 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
249
250 #define SYSCTL_NODE_CHILDREN(parent, name) \
251 sysctl__##parent##_##name.oid_children
252
253 #ifndef NO_SYSCTL_DESCR
254 #define __DESCR(d) d
255 #else
256 #define __DESCR(d) ""
257 #endif
258
259 /* This macro is only for internal use */
260 #define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr) \
261 struct sysctl_oid id = { \
262 .oid_parent = (parent_child_head), \
263 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \
264 .oid_number = (nbr), \
265 .oid_kind = (kind), \
266 .oid_arg1 = (a1), \
267 .oid_arg2 = (a2), \
268 .oid_name = (name), \
269 .oid_handler = (handler), \
270 .oid_fmt = (fmt), \
271 .oid_descr = __DESCR(descr) \
272 }; \
273 DATA_SET(sysctl_set, id)
274
275 /* This constructs a static "raw" MIB oid. */
276 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
277 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \
278 SYSCTL_CHILDREN(&sysctl__##parent), \
279 nbr, #name, kind, a1, a2, handler, fmt, descr)
280
281 /* This constructs a global "raw" MIB oid. */
282 #define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
283 SYSCTL_OID_RAW(sysctl__##parent##_##name, \
284 SYSCTL_CHILDREN(&sysctl__##parent), \
285 nbr, #name, kind, a1, a2, handler, fmt, descr)
286
287 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
288 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr))
289
290 /* This constructs a root node from which other nodes can hang. */
291 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \
292 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \
293 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \
294 handler, "N", descr); \
295 CTASSERT(((access) & CTLTYPE) == 0 || \
296 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
297
298 /* This constructs a node from which other oids can hang. */
299 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
300 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \
301 NULL, 0, handler, "N", descr); \
302 CTASSERT(((access) & CTLTYPE) == 0 || \
303 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
304
305 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
306 ({ \
307 CTASSERT(((access) & CTLTYPE) == 0 || \
308 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
309 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
310 NULL, 0, handler, "N", __DESCR(descr)); \
311 })
312
313 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \
314 ({ \
315 CTASSERT(((access) & CTLTYPE) == 0 || \
316 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
317 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \
318 CTLTYPE_NODE|(access), \
319 NULL, 0, handler, "N", __DESCR(descr)); \
320 })
321
322 /* Oid for a string. len can be 0 to indicate '\0' termination. */
323 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
324 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
325 arg, len, sysctl_handle_string, "A", descr); \
326 CTASSERT(((access) & CTLTYPE) == 0 || \
327 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING)
328
329 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
330 ({ \
331 char *__arg = (arg); \
332 CTASSERT(((access) & CTLTYPE) == 0 || \
333 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \
334 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
335 __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \
336 })
337
338 /* Oid for a constant '\0' terminated string. */
339 #define SYSCTL_CONST_STRING(parent, nbr, name, access, arg, descr) \
340 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
341 __DECONST(char *, arg), 0, sysctl_handle_string, "A", descr); \
342 CTASSERT(!(access & CTLFLAG_WR)); \
343 CTASSERT(((access) & CTLTYPE) == 0 || \
344 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING)
345
346 #define SYSCTL_ADD_CONST_STRING(ctx, parent, nbr, name, access, arg, descr) \
347 ({ \
348 char *__arg = __DECONST(char *, arg); \
349 CTASSERT(!(access & CTLFLAG_WR)); \
350 CTASSERT(((access) & CTLTYPE) == 0 || \
351 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \
352 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
353 __arg, 0, sysctl_handle_string, "A", __DESCR(descr)); \
354 })
355
356 /* Oid for a bool. If ptr is NULL, val is returned. */
357 #define SYSCTL_NULL_BOOL_PTR ((bool *)NULL)
358 #define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \
359 SYSCTL_OID(parent, nbr, name, \
360 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
361 ptr, val, sysctl_handle_bool, "CU", descr); \
362 CTASSERT(((access) & CTLTYPE) == 0 && \
363 sizeof(bool) == sizeof(*(ptr)))
364
365 #define SYSCTL_ADD_BOOL(ctx, parent, nbr, name, access, ptr, val, descr) \
366 ({ \
367 bool *__ptr = (ptr); \
368 CTASSERT(((access) & CTLTYPE) == 0); \
369 sysctl_add_oid(ctx, parent, nbr, name, \
370 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
371 __ptr, val, sysctl_handle_bool, "CU", __DESCR(descr)); \
372 })
373
374 /* Oid for a signed 8-bit int. If ptr is NULL, val is returned. */
375 #define SYSCTL_NULL_S8_PTR ((int8_t *)NULL)
376 #define SYSCTL_S8(parent, nbr, name, access, ptr, val, descr) \
377 SYSCTL_OID(parent, nbr, name, \
378 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
379 ptr, val, sysctl_handle_8, "C", descr); \
380 CTASSERT((((access) & CTLTYPE) == 0 || \
381 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8) && \
382 sizeof(int8_t) == sizeof(*(ptr)))
383
384 #define SYSCTL_ADD_S8(ctx, parent, nbr, name, access, ptr, val, descr) \
385 ({ \
386 int8_t *__ptr = (ptr); \
387 CTASSERT(((access) & CTLTYPE) == 0 || \
388 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8); \
389 sysctl_add_oid(ctx, parent, nbr, name, \
390 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
391 __ptr, val, sysctl_handle_8, "C", __DESCR(descr)); \
392 })
393
394 /* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */
395 #define SYSCTL_NULL_U8_PTR ((uint8_t *)NULL)
396 #define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \
397 SYSCTL_OID(parent, nbr, name, \
398 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
399 ptr, val, sysctl_handle_8, "CU", descr); \
400 CTASSERT((((access) & CTLTYPE) == 0 || \
401 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \
402 sizeof(uint8_t) == sizeof(*(ptr)))
403
404 #define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \
405 ({ \
406 uint8_t *__ptr = (ptr); \
407 CTASSERT(((access) & CTLTYPE) == 0 || \
408 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \
409 sysctl_add_oid(ctx, parent, nbr, name, \
410 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
411 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr)); \
412 })
413
414 /* Oid for a signed 16-bit int. If ptr is NULL, val is returned. */
415 #define SYSCTL_NULL_S16_PTR ((int16_t *)NULL)
416 #define SYSCTL_S16(parent, nbr, name, access, ptr, val, descr) \
417 SYSCTL_OID(parent, nbr, name, \
418 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
419 ptr, val, sysctl_handle_16, "S", descr); \
420 CTASSERT((((access) & CTLTYPE) == 0 || \
421 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16) && \
422 sizeof(int16_t) == sizeof(*(ptr)))
423
424 #define SYSCTL_ADD_S16(ctx, parent, nbr, name, access, ptr, val, descr) \
425 ({ \
426 int16_t *__ptr = (ptr); \
427 CTASSERT(((access) & CTLTYPE) == 0 || \
428 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16); \
429 sysctl_add_oid(ctx, parent, nbr, name, \
430 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
431 __ptr, val, sysctl_handle_16, "S", __DESCR(descr)); \
432 })
433
434 /* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */
435 #define SYSCTL_NULL_U16_PTR ((uint16_t *)NULL)
436 #define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \
437 SYSCTL_OID(parent, nbr, name, \
438 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
439 ptr, val, sysctl_handle_16, "SU", descr); \
440 CTASSERT((((access) & CTLTYPE) == 0 || \
441 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \
442 sizeof(uint16_t) == sizeof(*(ptr)))
443
444 #define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \
445 ({ \
446 uint16_t *__ptr = (ptr); \
447 CTASSERT(((access) & CTLTYPE) == 0 || \
448 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \
449 sysctl_add_oid(ctx, parent, nbr, name, \
450 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
451 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr)); \
452 })
453
454 /* Oid for a signed 32-bit int. If ptr is NULL, val is returned. */
455 #define SYSCTL_NULL_S32_PTR ((int32_t *)NULL)
456 #define SYSCTL_S32(parent, nbr, name, access, ptr, val, descr) \
457 SYSCTL_OID(parent, nbr, name, \
458 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
459 ptr, val, sysctl_handle_32, "I", descr); \
460 CTASSERT((((access) & CTLTYPE) == 0 || \
461 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32) && \
462 sizeof(int32_t) == sizeof(*(ptr)))
463
464 #define SYSCTL_ADD_S32(ctx, parent, nbr, name, access, ptr, val, descr) \
465 ({ \
466 int32_t *__ptr = (ptr); \
467 CTASSERT(((access) & CTLTYPE) == 0 || \
468 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32); \
469 sysctl_add_oid(ctx, parent, nbr, name, \
470 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
471 __ptr, val, sysctl_handle_32, "I", __DESCR(descr)); \
472 })
473
474 /* Oid for an unsigned 32-bit int. If ptr is NULL, val is returned. */
475 #define SYSCTL_NULL_U32_PTR ((uint32_t *)NULL)
476 #define SYSCTL_U32(parent, nbr, name, access, ptr, val, descr) \
477 SYSCTL_OID(parent, nbr, name, \
478 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
479 ptr, val, sysctl_handle_32, "IU", descr); \
480 CTASSERT((((access) & CTLTYPE) == 0 || \
481 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32) && \
482 sizeof(uint32_t) == sizeof(*(ptr)))
483
484 #define SYSCTL_ADD_U32(ctx, parent, nbr, name, access, ptr, val, descr) \
485 ({ \
486 uint32_t *__ptr = (ptr); \
487 CTASSERT(((access) & CTLTYPE) == 0 || \
488 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32); \
489 sysctl_add_oid(ctx, parent, nbr, name, \
490 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
491 __ptr, val, sysctl_handle_32, "IU", __DESCR(descr)); \
492 })
493
494 /* Oid for a signed 64-bit int. If ptr is NULL, val is returned. */
495 #define SYSCTL_NULL_S64_PTR ((int64_t *)NULL)
496 #define SYSCTL_S64(parent, nbr, name, access, ptr, val, descr) \
497 SYSCTL_OID(parent, nbr, name, \
498 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
499 ptr, val, sysctl_handle_64, "Q", descr); \
500 CTASSERT((((access) & CTLTYPE) == 0 || \
501 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
502 sizeof(int64_t) == sizeof(*(ptr)))
503
504 #define SYSCTL_ADD_S64(ctx, parent, nbr, name, access, ptr, val, descr) \
505 ({ \
506 int64_t *__ptr = (ptr); \
507 CTASSERT(((access) & CTLTYPE) == 0 || \
508 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
509 sysctl_add_oid(ctx, parent, nbr, name, \
510 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
511 __ptr, val, sysctl_handle_64, "Q", __DESCR(descr)); \
512 })
513
514 /* Oid for an unsigned 64-bit int. If ptr is NULL, val is returned. */
515 #define SYSCTL_NULL_U64_PTR ((uint64_t *)NULL)
516 #define SYSCTL_U64(parent, nbr, name, access, ptr, val, descr) \
517 SYSCTL_OID(parent, nbr, name, \
518 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
519 ptr, val, sysctl_handle_64, "QU", descr); \
520 CTASSERT((((access) & CTLTYPE) == 0 || \
521 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
522 sizeof(uint64_t) == sizeof(*(ptr)))
523
524 #define SYSCTL_ADD_U64(ctx, parent, nbr, name, access, ptr, val, descr) \
525 ({ \
526 uint64_t *__ptr = (ptr); \
527 CTASSERT(((access) & CTLTYPE) == 0 || \
528 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
529 sysctl_add_oid(ctx, parent, nbr, name, \
530 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
531 __ptr, val, sysctl_handle_64, "QU", __DESCR(descr)); \
532 })
533
534 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */
535 #define SYSCTL_NULL_INT_PTR ((int *)NULL)
536 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
537 SYSCTL_OID(parent, nbr, name, \
538 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
539 ptr, val, sysctl_handle_int, "I", descr); \
540 CTASSERT((((access) & CTLTYPE) == 0 || \
541 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \
542 sizeof(int) == sizeof(*(ptr)))
543
544 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
545 ({ \
546 int *__ptr = (ptr); \
547 CTASSERT(((access) & CTLTYPE) == 0 || \
548 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
549 sysctl_add_oid(ctx, parent, nbr, name, \
550 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
551 __ptr, val, sysctl_handle_int, "I", __DESCR(descr)); \
552 })
553
554 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
555 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL)
556 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
557 SYSCTL_OID(parent, nbr, name, \
558 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
559 ptr, val, sysctl_handle_int, "IU", descr); \
560 CTASSERT((((access) & CTLTYPE) == 0 || \
561 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \
562 sizeof(unsigned) == sizeof(*(ptr)))
563
564 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
565 ({ \
566 unsigned *__ptr = (ptr); \
567 CTASSERT(((access) & CTLTYPE) == 0 || \
568 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \
569 sysctl_add_oid(ctx, parent, nbr, name, \
570 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
571 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr)); \
572 })
573
574 /* Oid for a long. The pointer must be non NULL. */
575 #define SYSCTL_NULL_LONG_PTR ((long *)NULL)
576 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
577 SYSCTL_OID(parent, nbr, name, \
578 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
579 ptr, val, sysctl_handle_long, "L", descr); \
580 CTASSERT((((access) & CTLTYPE) == 0 || \
581 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \
582 sizeof(long) == sizeof(*(ptr)))
583
584 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
585 ({ \
586 long *__ptr = (ptr); \
587 CTASSERT(((access) & CTLTYPE) == 0 || \
588 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \
589 sysctl_add_oid(ctx, parent, nbr, name, \
590 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
591 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr)); \
592 })
593
594 /* Oid for an unsigned long. The pointer must be non NULL. */
595 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL)
596 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
597 SYSCTL_OID(parent, nbr, name, \
598 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
599 ptr, val, sysctl_handle_long, "LU", descr); \
600 CTASSERT((((access) & CTLTYPE) == 0 || \
601 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \
602 sizeof(unsigned long) == sizeof(*(ptr)))
603
604 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
605 ({ \
606 unsigned long *__ptr = (ptr); \
607 CTASSERT(((access) & CTLTYPE) == 0 || \
608 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \
609 sysctl_add_oid(ctx, parent, nbr, name, \
610 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
611 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)); \
612 })
613
614 /* Oid for a quad. The pointer must be non NULL. */
615 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL)
616 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
617 SYSCTL_OID(parent, nbr, name, \
618 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
619 ptr, val, sysctl_handle_64, "Q", descr); \
620 CTASSERT((((access) & CTLTYPE) == 0 || \
621 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
622 sizeof(int64_t) == sizeof(*(ptr)))
623
624 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \
625 ({ \
626 int64_t *__ptr = (ptr); \
627 CTASSERT(((access) & CTLTYPE) == 0 || \
628 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
629 sysctl_add_oid(ctx, parent, nbr, name, \
630 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
631 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr)); \
632 })
633
634 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL)
635 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \
636 SYSCTL_OID(parent, nbr, name, \
637 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
638 ptr, val, sysctl_handle_64, "QU", descr); \
639 CTASSERT((((access) & CTLTYPE) == 0 || \
640 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
641 sizeof(uint64_t) == sizeof(*(ptr)))
642
643 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \
644 ({ \
645 uint64_t *__ptr = (ptr); \
646 CTASSERT(((access) & CTLTYPE) == 0 || \
647 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
648 sysctl_add_oid(ctx, parent, nbr, name, \
649 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
650 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr)); \
651 })
652
653 /* Oid for a CPU dependent variable */
654 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \
655 ({ \
656 struct sysctl_oid *__ret; \
657 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \
658 sizeof(unsigned) == sizeof(*(ptr))) && \
659 ((access) & CTLTYPE) == 0); \
660 if (sizeof(uint64_t) == sizeof(*(ptr))) { \
661 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
662 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
663 (ptr), 0, sysctl_handle_64, "QU", \
664 __DESCR(descr)); \
665 } else { \
666 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
667 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
668 (ptr), 0, sysctl_handle_int, "IU", \
669 __DESCR(descr)); \
670 } \
671 __ret; \
672 })
673
674 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */
675 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \
676 SYSCTL_OID(parent, nbr, name, \
677 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
678 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \
679 CTASSERT((((access) & CTLTYPE) == 0 || \
680 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
681 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
682 sizeof(uint64_t) == sizeof(**(ptr)))
683
684 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \
685 ({ \
686 counter_u64_t *__ptr = (ptr); \
687 CTASSERT(((access) & CTLTYPE) == 0 || \
688 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
689 sysctl_add_oid(ctx, parent, nbr, name, \
690 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
691 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr)); \
692 })
693
694 /* Oid for an array of counter(9)s. The pointer and length must be non zero. */
695 #define SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \
696 SYSCTL_OID(parent, nbr, name, \
697 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
698 (ptr), (len), sysctl_handle_counter_u64_array, "S", descr); \
699 CTASSERT((((access) & CTLTYPE) == 0 || \
700 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) && \
701 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
702 sizeof(uint64_t) == sizeof(**(ptr)))
703
704 #define SYSCTL_ADD_COUNTER_U64_ARRAY(ctx, parent, nbr, name, access, \
705 ptr, len, descr) \
706 ({ \
707 counter_u64_t *__ptr = (ptr); \
708 CTASSERT(((access) & CTLTYPE) == 0 || \
709 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
710 sysctl_add_oid(ctx, parent, nbr, name, \
711 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
712 __ptr, len, sysctl_handle_counter_u64_array, "S", \
713 __DESCR(descr)); \
714 })
715
716 /* Oid for an opaque object. Specified by a pointer and a length. */
717 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
718 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
719 ptr, len, sysctl_handle_opaque, fmt, descr); \
720 CTASSERT(((access) & CTLTYPE) == 0 || \
721 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
722
723 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \
724 ({ \
725 CTASSERT(((access) & CTLTYPE) == 0 || \
726 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
727 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
728 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)); \
729 })
730
731 /* Oid for a struct. Specified by a pointer and a type. */
732 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
733 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
734 ptr, sizeof(struct type), sysctl_handle_opaque, \
735 "S," #type, descr); \
736 CTASSERT(((access) & CTLTYPE) == 0 || \
737 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
738
739 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
740 ({ \
741 CTASSERT(((access) & CTLTYPE) == 0 || \
742 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
743 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
744 (ptr), sizeof(struct type), \
745 sysctl_handle_opaque, "S," #type, __DESCR(descr)); \
746 })
747
748 /* Oid for a procedure. Specified by a pointer and an arg. */
749 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
750 SYSCTL_OID(parent, nbr, name, (access), \
751 ptr, arg, handler, fmt, descr); \
752 CTASSERT(((access) & CTLTYPE) != 0)
753
754 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
755 ({ \
756 CTASSERT(((access) & CTLTYPE) != 0); \
757 sysctl_add_oid(ctx, parent, nbr, name, (access), \
758 (ptr), (arg), (handler), (fmt), __DESCR(descr)); \
759 })
760
761 /* Oid to handle limits on uma(9) zone specified by pointer. */
762 #define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \
763 SYSCTL_OID(parent, nbr, name, \
764 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
765 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \
766 CTASSERT(((access) & CTLTYPE) == 0 || \
767 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
768
769 #define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \
770 ({ \
771 uma_zone_t __ptr = (ptr); \
772 CTASSERT(((access) & CTLTYPE) == 0 || \
773 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
774 sysctl_add_oid(ctx, parent, nbr, name, \
775 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
776 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr)); \
777 })
778
779 /* Oid to obtain current use of uma(9) zone specified by pointer. */
780 #define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \
781 SYSCTL_OID(parent, nbr, name, \
782 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
783 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \
784 CTASSERT(((access) & CTLTYPE) == 0 || \
785 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
786
787 #define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \
788 ({ \
789 uma_zone_t __ptr = (ptr); \
790 CTASSERT(((access) & CTLTYPE) == 0 || \
791 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
792 sysctl_add_oid(ctx, parent, nbr, name, \
793 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
794 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr)); \
795 })
796
797 /* OID expressing a struct timeval as seconds */
798 #define SYSCTL_TIMEVAL_SEC(parent, nbr, name, access, ptr, descr) \
799 SYSCTL_OID(parent, nbr, name, \
800 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
801 (ptr), 0, sysctl_sec_to_timeval, "I", descr); \
802 CTASSERT(((access) & CTLTYPE) == 0 || \
803 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
804 #define SYSCTL_ADD_TIMEVAL_SEC(ctx, parent, nbr, name, access, ptr, descr) \
805 ({ \
806 struct timeval *__ptr = (ptr); \
807 CTASSERT(((access) & CTLTYPE) == 0 || \
808 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
809 sysctl_add_oid(ctx, parent, nbr, name, \
810 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
811 __ptr, 0, sysctl_sec_to_timeval, "I", __DESCR(descr), \
812 NULL); \
813 })
814
815 /*
816 * A macro to generate a read-only sysctl to indicate the presence of optional
817 * kernel features.
818 */
819 #define FEATURE(name, desc) \
820 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \
821 SYSCTL_NULL_INT_PTR, 1, desc)
822
823 #endif /* _KERNEL */
824
825 /*
826 * Top-level identifiers
827 */
828 #define CTL_UNSPEC 0 /* unused */
829 #define CTL_KERN 1 /* "high kernel": proc, limits */
830 #define CTL_VM 2 /* virtual memory */
831 #define CTL_VFS 3 /* filesystem, mount type is next */
832 #define CTL_NET 4 /* network, see socket.h */
833 #define CTL_DEBUG 5 /* debugging parameters */
834 #define CTL_HW 6 /* generic cpu/io */
835 #define CTL_MACHDEP 7 /* machine dependent */
836 #define CTL_USER 8 /* user-level */
837 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
838
839 /*
840 * CTL_KERN identifiers
841 */
842 #define KERN_OSTYPE 1 /* string: system version */
843 #define KERN_OSRELEASE 2 /* string: system release */
844 #define KERN_OSREV 3 /* int: system revision */
845 #define KERN_VERSION 4 /* string: compile time info */
846 #define KERN_MAXVNODES 5 /* int: max vnodes */
847 #define KERN_MAXPROC 6 /* int: max processes */
848 #define KERN_MAXFILES 7 /* int: max open files */
849 #define KERN_ARGMAX 8 /* int: max arguments to exec */
850 #define KERN_SECURELVL 9 /* int: system security level */
851 #define KERN_HOSTNAME 10 /* string: hostname */
852 #define KERN_HOSTID 11 /* int: host identifier */
853 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
854 #define KERN_VNODE 13 /* struct: vnode structures */
855 #define KERN_PROC 14 /* struct: process entries */
856 #define KERN_FILE 15 /* struct: file entries */
857 #define KERN_PROF 16 /* node: kernel profiling info */
858 #define KERN_POSIX1 17 /* int: POSIX.1 version */
859 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
860 #define KERN_JOB_CONTROL 19 /* int: is job control available */
861 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
862 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
863 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
864 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
865 #define KERN_OSRELDATE 24 /* int: kernel release date */
866 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
867 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
868 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
869 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
870 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
871 #define KERN_IPC 30 /* node: anything related to IPC */
872 #define KERN_DUMMY 31 /* unused */
873 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
874 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
875 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
876 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
877 #define KERN_HOSTUUID 36 /* string: host UUID identifier */
878 #define KERN_ARND 37 /* int: from arc4rand() */
879 /*
880 * KERN_PROC subtypes
881 */
882 #define KERN_PROC_ALL 0 /* everything */
883 #define KERN_PROC_PID 1 /* by process id */
884 #define KERN_PROC_PGRP 2 /* by process group id */
885 #define KERN_PROC_SESSION 3 /* by session of pid */
886 #define KERN_PROC_TTY 4 /* by controlling tty */
887 #define KERN_PROC_UID 5 /* by effective uid */
888 #define KERN_PROC_RUID 6 /* by real uid */
889 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
890 #define KERN_PROC_PROC 8 /* only return procs */
891 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
892 #define KERN_PROC_RGID 10 /* by real group id */
893 #define KERN_PROC_GID 11 /* by effective group id */
894 #define KERN_PROC_PATHNAME 12 /* path to executable */
895 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */
896 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */
897 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */
898 #define KERN_PROC_INC_THREAD 0x10 /*
899 * modifier for pid, pgrp, tty,
900 * uid, ruid, gid, rgid and proc
901 * This effectively uses 16-31
902 */
903 #define KERN_PROC_VMMAP 32 /* VM map entries for process */
904 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */
905 #define KERN_PROC_GROUPS 34 /* process groups */
906 #define KERN_PROC_ENV 35 /* get environment */
907 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */
908 #define KERN_PROC_RLIMIT 37 /* process resource limits */
909 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */
910 #define KERN_PROC_UMASK 39 /* process umask */
911 #define KERN_PROC_OSREL 40 /* osreldate for process binary */
912 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */
913 #define KERN_PROC_CWD 42 /* process current working directory */
914 #define KERN_PROC_NFDS 43 /* number of open file descriptors */
915
916 /*
917 * KERN_IPC identifiers
918 */
919 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
920 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
921 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
922 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
923 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
924 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
925 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
926
927 /*
928 * CTL_HW identifiers
929 */
930 #define HW_MACHINE 1 /* string: machine class */
931 #define HW_MODEL 2 /* string: specific machine model */
932 #define HW_NCPU 3 /* int: number of cpus */
933 #define HW_BYTEORDER 4 /* int: machine byte order */
934 #define HW_PHYSMEM 5 /* int: total memory */
935 #define HW_USERMEM 6 /* int: non-kernel memory */
936 #define HW_PAGESIZE 7 /* int: software page size */
937 #define HW_DISKNAMES 8 /* strings: disk drive names */
938 #define HW_DISKSTATS 9 /* struct: diskstats[] */
939 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
940 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
941 #define HW_REALMEM 12 /* int: 'real' memory */
942
943 /*
944 * CTL_USER definitions
945 */
946 #define USER_CS_PATH 1 /* string: _CS_PATH */
947 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
948 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
949 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
950 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
951 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
952 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
953 #define USER_LINE_MAX 8 /* int: LINE_MAX */
954 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
955 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
956 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
957 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
958 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
959 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
960 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
961 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
962 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
963 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
964 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
965 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
966
967 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
968 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
969 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
970 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
971 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
972 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
973 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
974 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
975 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
976 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
977 #define CTL_P1003_1B_FSYNC 11 /* boolean */
978 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
979 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
980 #define CTL_P1003_1B_TIMERS 14 /* boolean */
981 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
982 #define CTL_P1003_1B_AIO_MAX 16 /* int */
983 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
984 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
985 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
986 #define CTL_P1003_1B_PAGESIZE 20 /* int */
987 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
988 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
989 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
990 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
991 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
992
993 #define CTL_P1003_1B_MAXID 26
994
995 #ifdef _KERNEL
996
997 /*
998 * Declare some common oids.
999 */
1000 extern struct sysctl_oid_list sysctl__children;
1001 SYSCTL_DECL(_kern);
1002 SYSCTL_DECL(_kern_features);
1003 SYSCTL_DECL(_kern_ipc);
1004 SYSCTL_DECL(_kern_proc);
1005 SYSCTL_DECL(_kern_sched);
1006 SYSCTL_DECL(_kern_sched_stats);
1007 SYSCTL_DECL(_sysctl);
1008 SYSCTL_DECL(_vm);
1009 SYSCTL_DECL(_vm_stats);
1010 SYSCTL_DECL(_vm_stats_misc);
1011 SYSCTL_DECL(_vfs);
1012 SYSCTL_DECL(_net);
1013 SYSCTL_DECL(_debug);
1014 SYSCTL_DECL(_debug_sizeof);
1015 SYSCTL_DECL(_dev);
1016 SYSCTL_DECL(_hw);
1017 SYSCTL_DECL(_hw_bus);
1018 SYSCTL_DECL(_hw_bus_devices);
1019 SYSCTL_DECL(_hw_bus_info);
1020 SYSCTL_DECL(_machdep);
1021 SYSCTL_DECL(_machdep_mitigations);
1022 SYSCTL_DECL(_user);
1023 SYSCTL_DECL(_compat);
1024 SYSCTL_DECL(_regression);
1025 SYSCTL_DECL(_security);
1026 SYSCTL_DECL(_security_bsd);
1027
1028 extern char machine[];
1029 extern char osrelease[];
1030 extern char ostype[];
1031 extern char kern_ident[];
1032
1033 /* Dynamic oid handling */
1034 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
1035 struct sysctl_oid_list *parent, int nbr, const char *name, int kind,
1036 void *arg1, intmax_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS),
1037 const char *fmt, const char *descr);
1038 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del,
1039 int recurse);
1040 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name);
1041 int sysctl_move_oid(struct sysctl_oid *oidp,
1042 struct sysctl_oid_list *parent);
1043 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
1044 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
1045 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
1046 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
1047 struct sysctl_oid *oidp);
1048 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
1049 struct sysctl_oid *oidp);
1050 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
1051 struct sysctl_oid *oidp);
1052
1053 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1054 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1055 int flags);
1056 int kernel_sysctlbyname(struct thread *td, char *name, void *old,
1057 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1058 int flags);
1059 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1060 size_t *oldlenp, int inkernel, void *new, size_t newlen,
1061 size_t *retval, int flags);
1062 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
1063 int *nindx, struct sysctl_req *req);
1064 void sysctl_wlock(void);
1065 void sysctl_wunlock(void);
1066 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
1067
1068 struct sbuf;
1069 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int,
1070 struct sysctl_req *);
1071 #else /* !_KERNEL */
1072 #include <sys/cdefs.h>
1073
1074 __BEGIN_DECLS
1075 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t);
1076 int sysctlbyname(const char *, void *, size_t *, const void *, size_t);
1077 int sysctlnametomib(const char *, int *, size_t *);
1078 __END_DECLS
1079 #endif /* _KERNEL */
1080
1081 #endif /* !_SYS_SYSCTL_H_ */
Cache object: ba3326fb4455a1e61d6f350b05713b7e
|