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/11.0/sys/sys/sysctl.h 300718 2016-05-26 08:41:55Z hselasky $
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_ANYBODY 0x10000000 /* All users can set this var */
87 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */
88 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */
89 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */
90 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */
91 #define CTLMASK_SECURE 0x00F00000 /* Secure level */
92 #define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */
93 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
94 #define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN)
95 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */
96 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */
97 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */
98 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */
99 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */
100 #define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */
101 #define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */
102 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR)
103
104 /*
105 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
106 *
107 * Secure when the securelevel is raised to at least N.
108 */
109 #define CTLSHIFT_SECURE 20
110 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
111 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
112 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
113
114 /*
115 * USE THIS instead of a hardwired number from the categories below
116 * to get dynamically assigned sysctl entries using the linker-set
117 * technology. This is the way nearly all new sysctl variables should
118 * be implemented.
119 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
120 */
121 #define OID_AUTO (-1)
122
123 /*
124 * The starting number for dynamically-assigned entries. WARNING!
125 * ALL static sysctl entries should have numbers LESS than this!
126 */
127 #define CTL_AUTO_START 0x100
128
129 #ifdef _KERNEL
130 #include <sys/linker_set.h>
131
132 #ifdef KLD_MODULE
133 /* XXX allow overspecification of type in external kernel modules */
134 #define SYSCTL_CT_ASSERT_MASK CTLTYPE
135 #else
136 #define SYSCTL_CT_ASSERT_MASK 0
137 #endif
138
139 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \
140 intmax_t arg2, struct sysctl_req *req
141
142 /* definitions for sysctl_req 'lock' member */
143 #define REQ_UNWIRED 1
144 #define REQ_WIRED 2
145
146 /* definitions for sysctl_req 'flags' member */
147 #if defined(__amd64__) || defined(__powerpc64__) ||\
148 (defined(__mips__) && defined(__mips_n64))
149 #define SCTL_MASK32 1 /* 32 bit emulation */
150 #endif
151
152 /*
153 * This describes the access space for a sysctl request. This is needed
154 * so that we can use the interface from the kernel or from user-space.
155 */
156 struct sysctl_req {
157 struct thread *td; /* used for access checking */
158 int lock; /* wiring state */
159 void *oldptr;
160 size_t oldlen;
161 size_t oldidx;
162 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
163 void *newptr;
164 size_t newlen;
165 size_t newidx;
166 int (*newfunc)(struct sysctl_req *, void *, size_t);
167 size_t validlen;
168 int flags;
169 };
170
171 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
172
173 /*
174 * This describes one "oid" in the MIB tree. Potentially more nodes can
175 * be hidden behind it, expanded by the handler.
176 */
177 struct sysctl_oid {
178 struct sysctl_oid_list oid_children;
179 struct sysctl_oid_list *oid_parent;
180 SLIST_ENTRY(sysctl_oid) oid_link;
181 int oid_number;
182 u_int oid_kind;
183 void *oid_arg1;
184 intmax_t oid_arg2;
185 const char *oid_name;
186 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
187 const char *oid_fmt;
188 int oid_refcnt;
189 u_int oid_running;
190 const char *oid_descr;
191 };
192
193 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
194 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
195 #define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1)
196
197 int sysctl_handle_bool(SYSCTL_HANDLER_ARGS);
198 int sysctl_handle_8(SYSCTL_HANDLER_ARGS);
199 int sysctl_handle_16(SYSCTL_HANDLER_ARGS);
200 int sysctl_handle_32(SYSCTL_HANDLER_ARGS);
201 int sysctl_handle_64(SYSCTL_HANDLER_ARGS);
202 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
203 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
204 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
205 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
206 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
207 int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS);
208 int sysctl_handle_counter_u64_array(SYSCTL_HANDLER_ARGS);
209
210 int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS);
211 int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS);
212
213 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS);
214 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS);
215 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS);
216
217 /*
218 * These functions are used to add/remove an oid from the mib.
219 */
220 void sysctl_register_oid(struct sysctl_oid *oidp);
221 void sysctl_unregister_oid(struct sysctl_oid *oidp);
222
223 /* Declare a static oid to allow child oids to be added to it. */
224 #define SYSCTL_DECL(name) \
225 extern struct sysctl_oid sysctl__##name
226
227 /* Hide these in macros. */
228 #define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children)
229 #define SYSCTL_PARENT(oid_ptr) \
230 (((oid_ptr)->oid_parent != &sysctl__children) ? \
231 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \
232 oid_children) : (struct sysctl_oid *)NULL)
233 #define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children)
234
235 /* === Structs and macros related to context handling. === */
236
237 /* All dynamically created sysctls can be tracked in a context list. */
238 struct sysctl_ctx_entry {
239 struct sysctl_oid *entry;
240 TAILQ_ENTRY(sysctl_ctx_entry) link;
241 };
242
243 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
244
245 #define SYSCTL_NODE_CHILDREN(parent, name) \
246 sysctl__##parent##_##name.oid_children
247
248 #ifndef NO_SYSCTL_DESCR
249 #define __DESCR(d) d
250 #else
251 #define __DESCR(d) ""
252 #endif
253
254 /* This macro is only for internal use */
255 #define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr) \
256 struct sysctl_oid id = { \
257 .oid_parent = (parent_child_head), \
258 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \
259 .oid_number = (nbr), \
260 .oid_kind = (kind), \
261 .oid_arg1 = (a1), \
262 .oid_arg2 = (a2), \
263 .oid_name = (name), \
264 .oid_handler = (handler), \
265 .oid_fmt = (fmt), \
266 .oid_descr = __DESCR(descr) \
267 }; \
268 DATA_SET(sysctl_set, id)
269
270 /* This constructs a static "raw" MIB oid. */
271 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
272 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \
273 SYSCTL_CHILDREN(&sysctl__##parent), \
274 nbr, #name, kind, a1, a2, handler, fmt, descr)
275
276 /* This constructs a global "raw" MIB oid. */
277 #define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
278 SYSCTL_OID_RAW(sysctl__##parent##_##name, \
279 SYSCTL_CHILDREN(&sysctl__##parent), \
280 nbr, #name, kind, a1, a2, handler, fmt, descr)
281
282 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
283 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr))
284
285 /* This constructs a root node from which other nodes can hang. */
286 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \
287 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \
288 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \
289 handler, "N", descr); \
290 CTASSERT(((access) & CTLTYPE) == 0 || \
291 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
292
293 /* This constructs a node from which other oids can hang. */
294 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
295 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \
296 NULL, 0, handler, "N", descr); \
297 CTASSERT(((access) & CTLTYPE) == 0 || \
298 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
299
300 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
301 ({ \
302 CTASSERT(((access) & CTLTYPE) == 0 || \
303 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
304 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
305 NULL, 0, handler, "N", __DESCR(descr)); \
306 })
307
308 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \
309 ({ \
310 CTASSERT(((access) & CTLTYPE) == 0 || \
311 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
312 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \
313 CTLTYPE_NODE|(access), \
314 NULL, 0, handler, "N", __DESCR(descr)); \
315 })
316
317 /* Oid for a string. len can be 0 to indicate '\0' termination. */
318 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
319 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
320 arg, len, sysctl_handle_string, "A", descr); \
321 CTASSERT(((access) & CTLTYPE) == 0 || \
322 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING)
323
324 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
325 ({ \
326 char *__arg = (arg); \
327 CTASSERT(((access) & CTLTYPE) == 0 || \
328 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \
329 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
330 __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \
331 })
332
333 /* Oid for a bool. If ptr is NULL, val is returned. */
334 #define SYSCTL_NULL_BOOL_PTR ((bool *)NULL)
335 #define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \
336 SYSCTL_OID(parent, nbr, name, \
337 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
338 ptr, val, sysctl_handle_bool, "CU", descr); \
339 CTASSERT(((access) & CTLTYPE) == 0 && \
340 sizeof(bool) == sizeof(*(ptr)))
341
342 #define SYSCTL_ADD_BOOL(ctx, parent, nbr, name, access, ptr, val, descr) \
343 ({ \
344 bool *__ptr = (ptr); \
345 CTASSERT(((access) & CTLTYPE) == 0); \
346 sysctl_add_oid(ctx, parent, nbr, name, \
347 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
348 __ptr, val, sysctl_handle_bool, "CU", __DESCR(descr)); \
349 })
350
351 /* Oid for a signed 8-bit int. If ptr is NULL, val is returned. */
352 #define SYSCTL_NULL_S8_PTR ((int8_t *)NULL)
353 #define SYSCTL_S8(parent, nbr, name, access, ptr, val, descr) \
354 SYSCTL_OID(parent, nbr, name, \
355 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
356 ptr, val, sysctl_handle_8, "C", descr); \
357 CTASSERT((((access) & CTLTYPE) == 0 || \
358 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8) && \
359 sizeof(int8_t) == sizeof(*(ptr)))
360
361 #define SYSCTL_ADD_S8(ctx, parent, nbr, name, access, ptr, val, descr) \
362 ({ \
363 int8_t *__ptr = (ptr); \
364 CTASSERT(((access) & CTLTYPE) == 0 || \
365 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8); \
366 sysctl_add_oid(ctx, parent, nbr, name, \
367 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
368 __ptr, val, sysctl_handle_8, "C", __DESCR(descr)); \
369 })
370
371 /* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */
372 #define SYSCTL_NULL_U8_PTR ((uint8_t *)NULL)
373 #define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \
374 SYSCTL_OID(parent, nbr, name, \
375 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
376 ptr, val, sysctl_handle_8, "CU", descr); \
377 CTASSERT((((access) & CTLTYPE) == 0 || \
378 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \
379 sizeof(uint8_t) == sizeof(*(ptr)))
380
381 #define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \
382 ({ \
383 uint8_t *__ptr = (ptr); \
384 CTASSERT(((access) & CTLTYPE) == 0 || \
385 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \
386 sysctl_add_oid(ctx, parent, nbr, name, \
387 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
388 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr)); \
389 })
390
391 /* Oid for a signed 16-bit int. If ptr is NULL, val is returned. */
392 #define SYSCTL_NULL_S16_PTR ((int16_t *)NULL)
393 #define SYSCTL_S16(parent, nbr, name, access, ptr, val, descr) \
394 SYSCTL_OID(parent, nbr, name, \
395 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
396 ptr, val, sysctl_handle_16, "S", descr); \
397 CTASSERT((((access) & CTLTYPE) == 0 || \
398 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16) && \
399 sizeof(int16_t) == sizeof(*(ptr)))
400
401 #define SYSCTL_ADD_S16(ctx, parent, nbr, name, access, ptr, val, descr) \
402 ({ \
403 int16_t *__ptr = (ptr); \
404 CTASSERT(((access) & CTLTYPE) == 0 || \
405 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16); \
406 sysctl_add_oid(ctx, parent, nbr, name, \
407 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
408 __ptr, val, sysctl_handle_16, "S", __DESCR(descr)); \
409 })
410
411 /* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */
412 #define SYSCTL_NULL_U16_PTR ((uint16_t *)NULL)
413 #define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \
414 SYSCTL_OID(parent, nbr, name, \
415 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
416 ptr, val, sysctl_handle_16, "SU", descr); \
417 CTASSERT((((access) & CTLTYPE) == 0 || \
418 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \
419 sizeof(uint16_t) == sizeof(*(ptr)))
420
421 #define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \
422 ({ \
423 uint16_t *__ptr = (ptr); \
424 CTASSERT(((access) & CTLTYPE) == 0 || \
425 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \
426 sysctl_add_oid(ctx, parent, nbr, name, \
427 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
428 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr)); \
429 })
430
431 /* Oid for a signed 32-bit int. If ptr is NULL, val is returned. */
432 #define SYSCTL_NULL_S32_PTR ((int32_t *)NULL)
433 #define SYSCTL_S32(parent, nbr, name, access, ptr, val, descr) \
434 SYSCTL_OID(parent, nbr, name, \
435 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
436 ptr, val, sysctl_handle_32, "I", descr); \
437 CTASSERT((((access) & CTLTYPE) == 0 || \
438 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32) && \
439 sizeof(int32_t) == sizeof(*(ptr)))
440
441 #define SYSCTL_ADD_S32(ctx, parent, nbr, name, access, ptr, val, descr) \
442 ({ \
443 int32_t *__ptr = (ptr); \
444 CTASSERT(((access) & CTLTYPE) == 0 || \
445 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32); \
446 sysctl_add_oid(ctx, parent, nbr, name, \
447 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
448 __ptr, val, sysctl_handle_32, "I", __DESCR(descr)); \
449 })
450
451 /* Oid for an unsigned 32-bit int. If ptr is NULL, val is returned. */
452 #define SYSCTL_NULL_U32_PTR ((uint32_t *)NULL)
453 #define SYSCTL_U32(parent, nbr, name, access, ptr, val, descr) \
454 SYSCTL_OID(parent, nbr, name, \
455 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
456 ptr, val, sysctl_handle_32, "IU", descr); \
457 CTASSERT((((access) & CTLTYPE) == 0 || \
458 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32) && \
459 sizeof(uint32_t) == sizeof(*(ptr)))
460
461 #define SYSCTL_ADD_U32(ctx, parent, nbr, name, access, ptr, val, descr) \
462 ({ \
463 uint32_t *__ptr = (ptr); \
464 CTASSERT(((access) & CTLTYPE) == 0 || \
465 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32); \
466 sysctl_add_oid(ctx, parent, nbr, name, \
467 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
468 __ptr, val, sysctl_handle_32, "IU", __DESCR(descr)); \
469 })
470
471 /* Oid for a signed 64-bit int. If ptr is NULL, val is returned. */
472 #define SYSCTL_NULL_S64_PTR ((int64_t *)NULL)
473 #define SYSCTL_S64(parent, nbr, name, access, ptr, val, descr) \
474 SYSCTL_OID(parent, nbr, name, \
475 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
476 ptr, val, sysctl_handle_64, "Q", descr); \
477 CTASSERT((((access) & CTLTYPE) == 0 || \
478 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
479 sizeof(int64_t) == sizeof(*(ptr)))
480
481 #define SYSCTL_ADD_S64(ctx, parent, nbr, name, access, ptr, val, descr) \
482 ({ \
483 int64_t *__ptr = (ptr); \
484 CTASSERT(((access) & CTLTYPE) == 0 || \
485 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
486 sysctl_add_oid(ctx, parent, nbr, name, \
487 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
488 __ptr, val, sysctl_handle_64, "Q", __DESCR(descr)); \
489 })
490
491 /* Oid for an unsigned 64-bit int. If ptr is NULL, val is returned. */
492 #define SYSCTL_NULL_U64_PTR ((uint64_t *)NULL)
493 #define SYSCTL_U64(parent, nbr, name, access, ptr, val, descr) \
494 SYSCTL_OID(parent, nbr, name, \
495 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
496 ptr, val, sysctl_handle_64, "QU", descr); \
497 CTASSERT((((access) & CTLTYPE) == 0 || \
498 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
499 sizeof(uint64_t) == sizeof(*(ptr)))
500
501 #define SYSCTL_ADD_U64(ctx, parent, nbr, name, access, ptr, val, descr) \
502 ({ \
503 uint64_t *__ptr = (ptr); \
504 CTASSERT(((access) & CTLTYPE) == 0 || \
505 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
506 sysctl_add_oid(ctx, parent, nbr, name, \
507 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
508 __ptr, val, sysctl_handle_64, "QU", __DESCR(descr)); \
509 })
510
511 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */
512 #define SYSCTL_NULL_INT_PTR ((int *)NULL)
513 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
514 SYSCTL_OID(parent, nbr, name, \
515 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
516 ptr, val, sysctl_handle_int, "I", descr); \
517 CTASSERT((((access) & CTLTYPE) == 0 || \
518 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \
519 sizeof(int) == sizeof(*(ptr)))
520
521 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
522 ({ \
523 int *__ptr = (ptr); \
524 CTASSERT(((access) & CTLTYPE) == 0 || \
525 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
526 sysctl_add_oid(ctx, parent, nbr, name, \
527 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
528 __ptr, val, sysctl_handle_int, "I", __DESCR(descr)); \
529 })
530
531 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
532 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL)
533 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
534 SYSCTL_OID(parent, nbr, name, \
535 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
536 ptr, val, sysctl_handle_int, "IU", descr); \
537 CTASSERT((((access) & CTLTYPE) == 0 || \
538 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \
539 sizeof(unsigned) == sizeof(*(ptr)))
540
541 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
542 ({ \
543 unsigned *__ptr = (ptr); \
544 CTASSERT(((access) & CTLTYPE) == 0 || \
545 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \
546 sysctl_add_oid(ctx, parent, nbr, name, \
547 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
548 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr)); \
549 })
550
551 /* Oid for a long. The pointer must be non NULL. */
552 #define SYSCTL_NULL_LONG_PTR ((long *)NULL)
553 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
554 SYSCTL_OID(parent, nbr, name, \
555 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
556 ptr, val, sysctl_handle_long, "L", descr); \
557 CTASSERT((((access) & CTLTYPE) == 0 || \
558 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \
559 sizeof(long) == sizeof(*(ptr)))
560
561 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
562 ({ \
563 long *__ptr = (ptr); \
564 CTASSERT(((access) & CTLTYPE) == 0 || \
565 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \
566 sysctl_add_oid(ctx, parent, nbr, name, \
567 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
568 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr)); \
569 })
570
571 /* Oid for an unsigned long. The pointer must be non NULL. */
572 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL)
573 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
574 SYSCTL_OID(parent, nbr, name, \
575 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
576 ptr, val, sysctl_handle_long, "LU", descr); \
577 CTASSERT((((access) & CTLTYPE) == 0 || \
578 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \
579 sizeof(unsigned long) == sizeof(*(ptr)))
580
581 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
582 ({ \
583 unsigned long *__ptr = (ptr); \
584 CTASSERT(((access) & CTLTYPE) == 0 || \
585 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \
586 sysctl_add_oid(ctx, parent, nbr, name, \
587 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
588 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr)); \
589 })
590
591 /* Oid for a quad. The pointer must be non NULL. */
592 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL)
593 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
594 SYSCTL_OID(parent, nbr, name, \
595 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
596 ptr, val, sysctl_handle_64, "Q", descr); \
597 CTASSERT((((access) & CTLTYPE) == 0 || \
598 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
599 sizeof(int64_t) == sizeof(*(ptr)))
600
601 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \
602 ({ \
603 int64_t *__ptr = (ptr); \
604 CTASSERT(((access) & CTLTYPE) == 0 || \
605 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
606 sysctl_add_oid(ctx, parent, nbr, name, \
607 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
608 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr)); \
609 })
610
611 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL)
612 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \
613 SYSCTL_OID(parent, nbr, name, \
614 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
615 ptr, val, sysctl_handle_64, "QU", descr); \
616 CTASSERT((((access) & CTLTYPE) == 0 || \
617 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
618 sizeof(uint64_t) == sizeof(*(ptr)))
619
620 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \
621 ({ \
622 uint64_t *__ptr = (ptr); \
623 CTASSERT(((access) & CTLTYPE) == 0 || \
624 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
625 sysctl_add_oid(ctx, parent, nbr, name, \
626 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
627 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr)); \
628 })
629
630 /* Oid for a CPU dependent variable */
631 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \
632 ({ \
633 struct sysctl_oid *__ret; \
634 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \
635 sizeof(unsigned) == sizeof(*(ptr))) && \
636 ((access) & CTLTYPE) == 0); \
637 if (sizeof(uint64_t) == sizeof(*(ptr))) { \
638 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
639 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
640 (ptr), 0, sysctl_handle_64, "QU", \
641 __DESCR(descr)); \
642 } else { \
643 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
644 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
645 (ptr), 0, sysctl_handle_int, "IU", \
646 __DESCR(descr)); \
647 } \
648 __ret; \
649 })
650
651 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */
652 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \
653 SYSCTL_OID(parent, nbr, name, \
654 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
655 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \
656 CTASSERT((((access) & CTLTYPE) == 0 || \
657 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
658 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
659 sizeof(uint64_t) == sizeof(**(ptr)))
660
661 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \
662 ({ \
663 counter_u64_t *__ptr = (ptr); \
664 CTASSERT(((access) & CTLTYPE) == 0 || \
665 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
666 sysctl_add_oid(ctx, parent, nbr, name, \
667 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
668 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr)); \
669 })
670
671 /* Oid for an array of counter(9)s. The pointer and length must be non zero. */
672 #define SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \
673 SYSCTL_OID(parent, nbr, name, \
674 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
675 (ptr), (len), sysctl_handle_counter_u64_array, "S", descr); \
676 CTASSERT((((access) & CTLTYPE) == 0 || \
677 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) && \
678 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
679 sizeof(uint64_t) == sizeof(**(ptr)))
680
681 #define SYSCTL_ADD_COUNTER_U64_ARRAY(ctx, parent, nbr, name, access, \
682 ptr, len, descr) \
683 ({ \
684 counter_u64_t *__ptr = (ptr); \
685 CTASSERT(((access) & CTLTYPE) == 0 || \
686 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
687 sysctl_add_oid(ctx, parent, nbr, name, \
688 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
689 __ptr, len, sysctl_handle_counter_u64_array, "S", \
690 __DESCR(descr)); \
691 })
692
693 /* Oid for an opaque object. Specified by a pointer and a length. */
694 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
695 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
696 ptr, len, sysctl_handle_opaque, fmt, descr); \
697 CTASSERT(((access) & CTLTYPE) == 0 || \
698 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
699
700 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \
701 ({ \
702 CTASSERT(((access) & CTLTYPE) == 0 || \
703 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
704 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
705 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr)); \
706 })
707
708 /* Oid for a struct. Specified by a pointer and a type. */
709 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
710 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
711 ptr, sizeof(struct type), sysctl_handle_opaque, \
712 "S," #type, descr); \
713 CTASSERT(((access) & CTLTYPE) == 0 || \
714 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
715
716 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
717 ({ \
718 CTASSERT(((access) & CTLTYPE) == 0 || \
719 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
720 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
721 (ptr), sizeof(struct type), \
722 sysctl_handle_opaque, "S," #type, __DESCR(descr)); \
723 })
724
725 /* Oid for a procedure. Specified by a pointer and an arg. */
726 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
727 SYSCTL_OID(parent, nbr, name, (access), \
728 ptr, arg, handler, fmt, descr); \
729 CTASSERT(((access) & CTLTYPE) != 0)
730
731 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
732 ({ \
733 CTASSERT(((access) & CTLTYPE) != 0); \
734 sysctl_add_oid(ctx, parent, nbr, name, (access), \
735 (ptr), (arg), (handler), (fmt), __DESCR(descr)); \
736 })
737
738 /* Oid to handle limits on uma(9) zone specified by pointer. */
739 #define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \
740 SYSCTL_OID(parent, nbr, name, \
741 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
742 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \
743 CTASSERT(((access) & CTLTYPE) == 0 || \
744 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
745
746 #define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \
747 ({ \
748 uma_zone_t __ptr = (ptr); \
749 CTASSERT(((access) & CTLTYPE) == 0 || \
750 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
751 sysctl_add_oid(ctx, parent, nbr, name, \
752 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
753 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr)); \
754 })
755
756 /* Oid to obtain current use of uma(9) zone specified by pointer. */
757 #define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \
758 SYSCTL_OID(parent, nbr, name, \
759 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
760 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \
761 CTASSERT(((access) & CTLTYPE) == 0 || \
762 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
763
764 #define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \
765 ({ \
766 uma_zone_t __ptr = (ptr); \
767 CTASSERT(((access) & CTLTYPE) == 0 || \
768 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
769 sysctl_add_oid(ctx, parent, nbr, name, \
770 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
771 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr)); \
772 })
773
774 /*
775 * A macro to generate a read-only sysctl to indicate the presence of optional
776 * kernel features.
777 */
778 #define FEATURE(name, desc) \
779 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \
780 SYSCTL_NULL_INT_PTR, 1, desc)
781
782 #endif /* _KERNEL */
783
784 /*
785 * Top-level identifiers
786 */
787 #define CTL_UNSPEC 0 /* unused */
788 #define CTL_KERN 1 /* "high kernel": proc, limits */
789 #define CTL_VM 2 /* virtual memory */
790 #define CTL_VFS 3 /* filesystem, mount type is next */
791 #define CTL_NET 4 /* network, see socket.h */
792 #define CTL_DEBUG 5 /* debugging parameters */
793 #define CTL_HW 6 /* generic cpu/io */
794 #define CTL_MACHDEP 7 /* machine dependent */
795 #define CTL_USER 8 /* user-level */
796 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
797
798 /*
799 * CTL_KERN identifiers
800 */
801 #define KERN_OSTYPE 1 /* string: system version */
802 #define KERN_OSRELEASE 2 /* string: system release */
803 #define KERN_OSREV 3 /* int: system revision */
804 #define KERN_VERSION 4 /* string: compile time info */
805 #define KERN_MAXVNODES 5 /* int: max vnodes */
806 #define KERN_MAXPROC 6 /* int: max processes */
807 #define KERN_MAXFILES 7 /* int: max open files */
808 #define KERN_ARGMAX 8 /* int: max arguments to exec */
809 #define KERN_SECURELVL 9 /* int: system security level */
810 #define KERN_HOSTNAME 10 /* string: hostname */
811 #define KERN_HOSTID 11 /* int: host identifier */
812 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
813 #define KERN_VNODE 13 /* struct: vnode structures */
814 #define KERN_PROC 14 /* struct: process entries */
815 #define KERN_FILE 15 /* struct: file entries */
816 #define KERN_PROF 16 /* node: kernel profiling info */
817 #define KERN_POSIX1 17 /* int: POSIX.1 version */
818 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
819 #define KERN_JOB_CONTROL 19 /* int: is job control available */
820 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
821 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
822 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
823 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
824 #define KERN_OSRELDATE 24 /* int: kernel release date */
825 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
826 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
827 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
828 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
829 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
830 #define KERN_IPC 30 /* node: anything related to IPC */
831 #define KERN_DUMMY 31 /* unused */
832 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
833 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
834 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
835 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
836 #define KERN_HOSTUUID 36 /* string: host UUID identifier */
837 #define KERN_ARND 37 /* int: from arc4rand() */
838 /*
839 * KERN_PROC subtypes
840 */
841 #define KERN_PROC_ALL 0 /* everything */
842 #define KERN_PROC_PID 1 /* by process id */
843 #define KERN_PROC_PGRP 2 /* by process group id */
844 #define KERN_PROC_SESSION 3 /* by session of pid */
845 #define KERN_PROC_TTY 4 /* by controlling tty */
846 #define KERN_PROC_UID 5 /* by effective uid */
847 #define KERN_PROC_RUID 6 /* by real uid */
848 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
849 #define KERN_PROC_PROC 8 /* only return procs */
850 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
851 #define KERN_PROC_RGID 10 /* by real group id */
852 #define KERN_PROC_GID 11 /* by effective group id */
853 #define KERN_PROC_PATHNAME 12 /* path to executable */
854 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */
855 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */
856 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */
857 #define KERN_PROC_INC_THREAD 0x10 /*
858 * modifier for pid, pgrp, tty,
859 * uid, ruid, gid, rgid and proc
860 * This effectively uses 16-31
861 */
862 #define KERN_PROC_VMMAP 32 /* VM map entries for process */
863 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */
864 #define KERN_PROC_GROUPS 34 /* process groups */
865 #define KERN_PROC_ENV 35 /* get environment */
866 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */
867 #define KERN_PROC_RLIMIT 37 /* process resource limits */
868 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */
869 #define KERN_PROC_UMASK 39 /* process umask */
870 #define KERN_PROC_OSREL 40 /* osreldate for process binary */
871 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */
872 #define KERN_PROC_CWD 42 /* process current working directory */
873 #define KERN_PROC_NFDS 43 /* number of open file descriptors */
874
875 /*
876 * KERN_IPC identifiers
877 */
878 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
879 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
880 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
881 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
882 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
883 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
884 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
885
886 /*
887 * CTL_HW identifiers
888 */
889 #define HW_MACHINE 1 /* string: machine class */
890 #define HW_MODEL 2 /* string: specific machine model */
891 #define HW_NCPU 3 /* int: number of cpus */
892 #define HW_BYTEORDER 4 /* int: machine byte order */
893 #define HW_PHYSMEM 5 /* int: total memory */
894 #define HW_USERMEM 6 /* int: non-kernel memory */
895 #define HW_PAGESIZE 7 /* int: software page size */
896 #define HW_DISKNAMES 8 /* strings: disk drive names */
897 #define HW_DISKSTATS 9 /* struct: diskstats[] */
898 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
899 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
900 #define HW_REALMEM 12 /* int: 'real' memory */
901
902 /*
903 * CTL_USER definitions
904 */
905 #define USER_CS_PATH 1 /* string: _CS_PATH */
906 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
907 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
908 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
909 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
910 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
911 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
912 #define USER_LINE_MAX 8 /* int: LINE_MAX */
913 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
914 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
915 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
916 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
917 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
918 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
919 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
920 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
921 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
922 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
923 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
924 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
925
926 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
927 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
928 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
929 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
930 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
931 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
932 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
933 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
934 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
935 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
936 #define CTL_P1003_1B_FSYNC 11 /* boolean */
937 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
938 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
939 #define CTL_P1003_1B_TIMERS 14 /* boolean */
940 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
941 #define CTL_P1003_1B_AIO_MAX 16 /* int */
942 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
943 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
944 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
945 #define CTL_P1003_1B_PAGESIZE 20 /* int */
946 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
947 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
948 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
949 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
950 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
951
952 #define CTL_P1003_1B_MAXID 26
953
954 #ifdef _KERNEL
955
956 /*
957 * Declare some common oids.
958 */
959 extern struct sysctl_oid_list sysctl__children;
960 SYSCTL_DECL(_kern);
961 SYSCTL_DECL(_kern_features);
962 SYSCTL_DECL(_kern_ipc);
963 SYSCTL_DECL(_kern_proc);
964 SYSCTL_DECL(_kern_sched);
965 SYSCTL_DECL(_kern_sched_stats);
966 SYSCTL_DECL(_sysctl);
967 SYSCTL_DECL(_vm);
968 SYSCTL_DECL(_vm_stats);
969 SYSCTL_DECL(_vm_stats_misc);
970 SYSCTL_DECL(_vfs);
971 SYSCTL_DECL(_net);
972 SYSCTL_DECL(_debug);
973 SYSCTL_DECL(_debug_sizeof);
974 SYSCTL_DECL(_dev);
975 SYSCTL_DECL(_hw);
976 SYSCTL_DECL(_hw_bus);
977 SYSCTL_DECL(_hw_bus_devices);
978 SYSCTL_DECL(_hw_bus_info);
979 SYSCTL_DECL(_machdep);
980 SYSCTL_DECL(_user);
981 SYSCTL_DECL(_compat);
982 SYSCTL_DECL(_regression);
983 SYSCTL_DECL(_security);
984 SYSCTL_DECL(_security_bsd);
985
986 extern char machine[];
987 extern char osrelease[];
988 extern char ostype[];
989 extern char kern_ident[];
990
991 /* Dynamic oid handling */
992 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
993 struct sysctl_oid_list *parent, int nbr, const char *name, int kind,
994 void *arg1, intmax_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS),
995 const char *fmt, const char *descr);
996 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del,
997 int recurse);
998 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name);
999 int sysctl_move_oid(struct sysctl_oid *oidp,
1000 struct sysctl_oid_list *parent);
1001 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
1002 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
1003 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
1004 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
1005 struct sysctl_oid *oidp);
1006 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
1007 struct sysctl_oid *oidp);
1008 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
1009 struct sysctl_oid *oidp);
1010
1011 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1012 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1013 int flags);
1014 int kernel_sysctlbyname(struct thread *td, char *name, void *old,
1015 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1016 int flags);
1017 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1018 size_t *oldlenp, int inkernel, void *new, size_t newlen,
1019 size_t *retval, int flags);
1020 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
1021 int *nindx, struct sysctl_req *req);
1022 void sysctl_wlock(void);
1023 void sysctl_wunlock(void);
1024 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
1025
1026 struct sbuf;
1027 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int,
1028 struct sysctl_req *);
1029 #else /* !_KERNEL */
1030 #include <sys/cdefs.h>
1031
1032 __BEGIN_DECLS
1033 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t);
1034 int sysctlbyname(const char *, void *, size_t *, const void *, size_t);
1035 int sysctlnametomib(const char *, int *, size_t *);
1036 __END_DECLS
1037 #endif /* _KERNEL */
1038
1039 #endif /* !_SYS_SYSCTL_H_ */
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