FreeBSD/Linux Kernel Cross Reference
sys/sys/sysctl.h
1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Mike Karels at Berkeley Software Design, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93
35 * $FreeBSD: releng/12.0/sys/sys/sysctl.h 333475 2018-05-11 00:01:43Z des $
36 */
37
38 #ifndef _SYS_SYSCTL_H_
39 #define _SYS_SYSCTL_H_
40
41 #ifdef _KERNEL
42 #include <sys/queue.h>
43 #endif
44
45 struct thread;
46 /*
47 * Definitions for sysctl call. The sysctl call uses a hierarchical name
48 * for objects that can be examined or modified. The name is expressed as
49 * a sequence of integers. Like a file path name, the meaning of each
50 * component depends on its place in the hierarchy. The top-level and kern
51 * identifiers are defined here, and other identifiers are defined in the
52 * respective subsystem header files.
53 */
54
55 #define CTL_MAXNAME 24 /* largest number of components supported */
56
57 /*
58 * Each subsystem defined by sysctl defines a list of variables
59 * for that subsystem. Each name is either a node with further
60 * levels defined below it, or it is a leaf of some particular
61 * type given below. Each sysctl level defines a set of name/type
62 * pairs to be used by sysctl(8) in manipulating the subsystem.
63 */
64 struct ctlname {
65 char *ctl_name; /* subsystem name */
66 int ctl_type; /* type of name */
67 };
68
69 #define CTLTYPE 0xf /* mask for the type */
70 #define CTLTYPE_NODE 1 /* name is a node */
71 #define CTLTYPE_INT 2 /* name describes an integer */
72 #define CTLTYPE_STRING 3 /* name describes a string */
73 #define CTLTYPE_S64 4 /* name describes a signed 64-bit number */
74 #define CTLTYPE_OPAQUE 5 /* name describes a structure */
75 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */
76 #define CTLTYPE_UINT 6 /* name describes an unsigned integer */
77 #define CTLTYPE_LONG 7 /* name describes a long */
78 #define CTLTYPE_ULONG 8 /* name describes an unsigned long */
79 #define CTLTYPE_U64 9 /* name describes an unsigned 64-bit number */
80 #define CTLTYPE_U8 0xa /* name describes an unsigned 8-bit number */
81 #define CTLTYPE_U16 0xb /* name describes an unsigned 16-bit number */
82 #define CTLTYPE_S8 0xc /* name describes a signed 8-bit number */
83 #define CTLTYPE_S16 0xd /* name describes a signed 16-bit number */
84 #define CTLTYPE_S32 0xe /* name describes a signed 32-bit number */
85 #define CTLTYPE_U32 0xf /* name describes an unsigned 32-bit number */
86
87 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
88 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
89 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR)
90 #define CTLFLAG_DORMANT 0x20000000 /* This sysctl is not active yet */
91 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */
92 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */
93 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */
94 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */
95 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */
96 #define CTLMASK_SECURE 0x00F00000 /* Secure level */
97 #define CTLFLAG_TUN 0x00080000 /* Default value is loaded from getenv() */
98 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
99 #define CTLFLAG_RWTUN (CTLFLAG_RW|CTLFLAG_TUN)
100 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */
101 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */
102 #define CTLFLAG_DYING 0x00010000 /* Oid is being removed */
103 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */
104 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */
105 #define CTLFLAG_STATS 0x00002000 /* Statistics, not a tuneable */
106 #define CTLFLAG_NOFETCH 0x00001000 /* Don't fetch tunable from getenv() */
107 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR)
108
109 /*
110 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
111 *
112 * Secure when the securelevel is raised to at least N.
113 */
114 #define CTLSHIFT_SECURE 20
115 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
116 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
117 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
118
119 /*
120 * USE THIS instead of a hardwired number from the categories below
121 * to get dynamically assigned sysctl entries using the linker-set
122 * technology. This is the way nearly all new sysctl variables should
123 * be implemented.
124 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
125 */
126 #define OID_AUTO (-1)
127
128 /*
129 * The starting number for dynamically-assigned entries. WARNING!
130 * ALL static sysctl entries should have numbers LESS than this!
131 */
132 #define CTL_AUTO_START 0x100
133
134 #ifdef _KERNEL
135 #include <sys/linker_set.h>
136
137 #ifdef KLD_MODULE
138 /* XXX allow overspecification of type in external kernel modules */
139 #define SYSCTL_CT_ASSERT_MASK CTLTYPE
140 #else
141 #define SYSCTL_CT_ASSERT_MASK 0
142 #endif
143
144 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \
145 intmax_t arg2, struct sysctl_req *req
146
147 /* definitions for sysctl_req 'lock' member */
148 #define REQ_UNWIRED 1
149 #define REQ_WIRED 2
150
151 /* definitions for sysctl_req 'flags' member */
152 #if defined(__aarch64__) || defined(__amd64__) || defined(__powerpc64__) ||\
153 (defined(__mips__) && defined(__mips_n64))
154 #define SCTL_MASK32 1 /* 32 bit emulation */
155 #endif
156
157 /*
158 * This describes the access space for a sysctl request. This is needed
159 * so that we can use the interface from the kernel or from user-space.
160 */
161 struct sysctl_req {
162 struct thread *td; /* used for access checking */
163 int lock; /* wiring state */
164 void *oldptr;
165 size_t oldlen;
166 size_t oldidx;
167 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
168 void *newptr;
169 size_t newlen;
170 size_t newidx;
171 int (*newfunc)(struct sysctl_req *, void *, size_t);
172 size_t validlen;
173 int flags;
174 };
175
176 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
177
178 /*
179 * This describes one "oid" in the MIB tree. Potentially more nodes can
180 * be hidden behind it, expanded by the handler.
181 */
182 struct sysctl_oid {
183 struct sysctl_oid_list oid_children;
184 struct sysctl_oid_list *oid_parent;
185 SLIST_ENTRY(sysctl_oid) oid_link;
186 int oid_number;
187 u_int oid_kind;
188 void *oid_arg1;
189 intmax_t oid_arg2;
190 const char *oid_name;
191 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
192 const char *oid_fmt;
193 int oid_refcnt;
194 u_int oid_running;
195 const char *oid_descr;
196 const char *oid_label;
197 };
198
199 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
200 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
201 #define SYSCTL_OUT_STR(r, p) (r->oldfunc)(r, p, strlen(p) + 1)
202
203 int sysctl_handle_bool(SYSCTL_HANDLER_ARGS);
204 int sysctl_handle_8(SYSCTL_HANDLER_ARGS);
205 int sysctl_handle_16(SYSCTL_HANDLER_ARGS);
206 int sysctl_handle_32(SYSCTL_HANDLER_ARGS);
207 int sysctl_handle_64(SYSCTL_HANDLER_ARGS);
208 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
209 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
210 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
211 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
212 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
213 int sysctl_handle_counter_u64(SYSCTL_HANDLER_ARGS);
214 int sysctl_handle_counter_u64_array(SYSCTL_HANDLER_ARGS);
215
216 int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS);
217 int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS);
218
219 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS);
220 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS);
221 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS);
222
223 /*
224 * These functions are used to add/remove an oid from the mib.
225 */
226 void sysctl_register_oid(struct sysctl_oid *oidp);
227 void sysctl_register_disabled_oid(struct sysctl_oid *oidp);
228 void sysctl_enable_oid(struct sysctl_oid *oidp);
229 void sysctl_unregister_oid(struct sysctl_oid *oidp);
230
231 /* Declare a static oid to allow child oids to be added to it. */
232 #define SYSCTL_DECL(name) \
233 extern struct sysctl_oid sysctl__##name
234
235 /* Hide these in macros. */
236 #define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children)
237 #define SYSCTL_PARENT(oid_ptr) \
238 (((oid_ptr)->oid_parent != &sysctl__children) ? \
239 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \
240 oid_children) : (struct sysctl_oid *)NULL)
241 #define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children)
242
243 /* === Structs and macros related to context handling. === */
244
245 /* All dynamically created sysctls can be tracked in a context list. */
246 struct sysctl_ctx_entry {
247 struct sysctl_oid *entry;
248 TAILQ_ENTRY(sysctl_ctx_entry) link;
249 };
250
251 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
252
253 #define SYSCTL_NODE_CHILDREN(parent, name) \
254 sysctl__##parent##_##name.oid_children
255
256 #ifndef NO_SYSCTL_DESCR
257 #define __DESCR(d) d
258 #else
259 #define __DESCR(d) ""
260 #endif
261
262 /* This macro is only for internal use */
263 #define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr, label) \
264 struct sysctl_oid id = { \
265 .oid_parent = (parent_child_head), \
266 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \
267 .oid_number = (nbr), \
268 .oid_kind = (kind), \
269 .oid_arg1 = (a1), \
270 .oid_arg2 = (a2), \
271 .oid_name = (name), \
272 .oid_handler = (handler), \
273 .oid_fmt = (fmt), \
274 .oid_descr = __DESCR(descr), \
275 .oid_label = (label), \
276 }; \
277 DATA_SET(sysctl_set, id)
278
279 /* This constructs a static "raw" MIB oid. */
280 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
281 SYSCTL_OID_WITH_LABEL(parent, nbr, name, kind, a1, a2, \
282 handler, fmt, descr, NULL)
283
284 #define SYSCTL_OID_WITH_LABEL(parent, nbr, name, kind, a1, a2, handler, fmt, descr, label) \
285 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \
286 SYSCTL_CHILDREN(&sysctl__##parent), \
287 nbr, #name, kind, a1, a2, handler, fmt, descr, label)
288
289 /* This constructs a global "raw" MIB oid. */
290 #define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr, label) \
291 SYSCTL_OID_RAW(sysctl__##parent##_##name, \
292 SYSCTL_CHILDREN(&sysctl__##parent), \
293 nbr, #name, kind, a1, a2, handler, fmt, descr, label)
294
295 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
296 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr), NULL)
297
298 /* This constructs a root node from which other nodes can hang. */
299 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \
300 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \
301 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \
302 handler, "N", descr, NULL); \
303 CTASSERT(((access) & CTLTYPE) == 0 || \
304 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
305
306 /* This constructs a node from which other oids can hang. */
307 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
308 SYSCTL_NODE_WITH_LABEL(parent, nbr, name, access, handler, descr, NULL)
309
310 #define SYSCTL_NODE_WITH_LABEL(parent, nbr, name, access, handler, descr, label) \
311 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \
312 NULL, 0, handler, "N", descr, label); \
313 CTASSERT(((access) & CTLTYPE) == 0 || \
314 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
315
316 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
317 SYSCTL_ADD_NODE_WITH_LABEL(ctx, parent, nbr, name, access, \
318 handler, descr, NULL)
319
320 #define SYSCTL_ADD_NODE_WITH_LABEL(ctx, parent, nbr, name, access, handler, descr, label) \
321 ({ \
322 CTASSERT(((access) & CTLTYPE) == 0 || \
323 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
324 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
325 NULL, 0, handler, "N", __DESCR(descr), label); \
326 })
327
328 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \
329 ({ \
330 CTASSERT(((access) & CTLTYPE) == 0 || \
331 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
332 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \
333 CTLTYPE_NODE|(access), \
334 NULL, 0, handler, "N", __DESCR(descr), NULL); \
335 })
336
337 /* Oid for a string. len can be 0 to indicate '\0' termination. */
338 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
339 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
340 arg, len, sysctl_handle_string, "A", descr); \
341 CTASSERT(((access) & CTLTYPE) == 0 || \
342 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING)
343
344 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
345 ({ \
346 char *__arg = (arg); \
347 CTASSERT(((access) & CTLTYPE) == 0 || \
348 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \
349 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
350 __arg, len, sysctl_handle_string, "A", __DESCR(descr), \
351 NULL); \
352 })
353
354 /* Oid for a bool. If ptr is NULL, val is returned. */
355 #define SYSCTL_NULL_BOOL_PTR ((bool *)NULL)
356 #define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \
357 SYSCTL_OID(parent, nbr, name, \
358 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
359 ptr, val, sysctl_handle_bool, "CU", descr); \
360 CTASSERT(((access) & CTLTYPE) == 0 && \
361 sizeof(bool) == sizeof(*(ptr)))
362
363 #define SYSCTL_ADD_BOOL(ctx, parent, nbr, name, access, ptr, val, descr) \
364 ({ \
365 bool *__ptr = (ptr); \
366 CTASSERT(((access) & CTLTYPE) == 0); \
367 sysctl_add_oid(ctx, parent, nbr, name, \
368 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
369 __ptr, val, sysctl_handle_bool, "CU", __DESCR(descr), \
370 NULL); \
371 })
372
373 /* Oid for a signed 8-bit int. If ptr is NULL, val is returned. */
374 #define SYSCTL_NULL_S8_PTR ((int8_t *)NULL)
375 #define SYSCTL_S8(parent, nbr, name, access, ptr, val, descr) \
376 SYSCTL_OID(parent, nbr, name, \
377 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
378 ptr, val, sysctl_handle_8, "C", descr); \
379 CTASSERT((((access) & CTLTYPE) == 0 || \
380 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8) && \
381 sizeof(int8_t) == sizeof(*(ptr)))
382
383 #define SYSCTL_ADD_S8(ctx, parent, nbr, name, access, ptr, val, descr) \
384 ({ \
385 int8_t *__ptr = (ptr); \
386 CTASSERT(((access) & CTLTYPE) == 0 || \
387 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8); \
388 sysctl_add_oid(ctx, parent, nbr, name, \
389 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
390 __ptr, val, sysctl_handle_8, "C", __DESCR(descr), NULL); \
391 })
392
393 /* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */
394 #define SYSCTL_NULL_U8_PTR ((uint8_t *)NULL)
395 #define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \
396 SYSCTL_OID(parent, nbr, name, \
397 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
398 ptr, val, sysctl_handle_8, "CU", descr); \
399 CTASSERT((((access) & CTLTYPE) == 0 || \
400 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \
401 sizeof(uint8_t) == sizeof(*(ptr)))
402
403 #define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \
404 ({ \
405 uint8_t *__ptr = (ptr); \
406 CTASSERT(((access) & CTLTYPE) == 0 || \
407 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \
408 sysctl_add_oid(ctx, parent, nbr, name, \
409 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
410 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr), NULL); \
411 })
412
413 /* Oid for a signed 16-bit int. If ptr is NULL, val is returned. */
414 #define SYSCTL_NULL_S16_PTR ((int16_t *)NULL)
415 #define SYSCTL_S16(parent, nbr, name, access, ptr, val, descr) \
416 SYSCTL_OID(parent, nbr, name, \
417 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
418 ptr, val, sysctl_handle_16, "S", descr); \
419 CTASSERT((((access) & CTLTYPE) == 0 || \
420 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16) && \
421 sizeof(int16_t) == sizeof(*(ptr)))
422
423 #define SYSCTL_ADD_S16(ctx, parent, nbr, name, access, ptr, val, descr) \
424 ({ \
425 int16_t *__ptr = (ptr); \
426 CTASSERT(((access) & CTLTYPE) == 0 || \
427 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16); \
428 sysctl_add_oid(ctx, parent, nbr, name, \
429 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
430 __ptr, val, sysctl_handle_16, "S", __DESCR(descr), NULL); \
431 })
432
433 /* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */
434 #define SYSCTL_NULL_U16_PTR ((uint16_t *)NULL)
435 #define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \
436 SYSCTL_OID(parent, nbr, name, \
437 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
438 ptr, val, sysctl_handle_16, "SU", descr); \
439 CTASSERT((((access) & CTLTYPE) == 0 || \
440 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \
441 sizeof(uint16_t) == sizeof(*(ptr)))
442
443 #define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \
444 ({ \
445 uint16_t *__ptr = (ptr); \
446 CTASSERT(((access) & CTLTYPE) == 0 || \
447 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \
448 sysctl_add_oid(ctx, parent, nbr, name, \
449 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
450 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr), NULL); \
451 })
452
453 /* Oid for a signed 32-bit int. If ptr is NULL, val is returned. */
454 #define SYSCTL_NULL_S32_PTR ((int32_t *)NULL)
455 #define SYSCTL_S32(parent, nbr, name, access, ptr, val, descr) \
456 SYSCTL_OID(parent, nbr, name, \
457 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
458 ptr, val, sysctl_handle_32, "I", descr); \
459 CTASSERT((((access) & CTLTYPE) == 0 || \
460 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32) && \
461 sizeof(int32_t) == sizeof(*(ptr)))
462
463 #define SYSCTL_ADD_S32(ctx, parent, nbr, name, access, ptr, val, descr) \
464 ({ \
465 int32_t *__ptr = (ptr); \
466 CTASSERT(((access) & CTLTYPE) == 0 || \
467 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32); \
468 sysctl_add_oid(ctx, parent, nbr, name, \
469 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
470 __ptr, val, sysctl_handle_32, "I", __DESCR(descr), NULL); \
471 })
472
473 /* Oid for an unsigned 32-bit int. If ptr is NULL, val is returned. */
474 #define SYSCTL_NULL_U32_PTR ((uint32_t *)NULL)
475 #define SYSCTL_U32(parent, nbr, name, access, ptr, val, descr) \
476 SYSCTL_OID(parent, nbr, name, \
477 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
478 ptr, val, sysctl_handle_32, "IU", descr); \
479 CTASSERT((((access) & CTLTYPE) == 0 || \
480 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32) && \
481 sizeof(uint32_t) == sizeof(*(ptr)))
482
483 #define SYSCTL_ADD_U32(ctx, parent, nbr, name, access, ptr, val, descr) \
484 ({ \
485 uint32_t *__ptr = (ptr); \
486 CTASSERT(((access) & CTLTYPE) == 0 || \
487 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32); \
488 sysctl_add_oid(ctx, parent, nbr, name, \
489 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
490 __ptr, val, sysctl_handle_32, "IU", __DESCR(descr), NULL); \
491 })
492
493 /* Oid for a signed 64-bit int. If ptr is NULL, val is returned. */
494 #define SYSCTL_NULL_S64_PTR ((int64_t *)NULL)
495 #define SYSCTL_S64(parent, nbr, name, access, ptr, val, descr) \
496 SYSCTL_OID(parent, nbr, name, \
497 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
498 ptr, val, sysctl_handle_64, "Q", descr); \
499 CTASSERT((((access) & CTLTYPE) == 0 || \
500 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
501 sizeof(int64_t) == sizeof(*(ptr)))
502
503 #define SYSCTL_ADD_S64(ctx, parent, nbr, name, access, ptr, val, descr) \
504 ({ \
505 int64_t *__ptr = (ptr); \
506 CTASSERT(((access) & CTLTYPE) == 0 || \
507 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
508 sysctl_add_oid(ctx, parent, nbr, name, \
509 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
510 __ptr, val, sysctl_handle_64, "Q", __DESCR(descr), NULL); \
511 })
512
513 /* Oid for an unsigned 64-bit int. If ptr is NULL, val is returned. */
514 #define SYSCTL_NULL_U64_PTR ((uint64_t *)NULL)
515 #define SYSCTL_U64(parent, nbr, name, access, ptr, val, descr) \
516 SYSCTL_OID(parent, nbr, name, \
517 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
518 ptr, val, sysctl_handle_64, "QU", descr); \
519 CTASSERT((((access) & CTLTYPE) == 0 || \
520 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
521 sizeof(uint64_t) == sizeof(*(ptr)))
522
523 #define SYSCTL_ADD_U64(ctx, parent, nbr, name, access, ptr, val, descr) \
524 ({ \
525 uint64_t *__ptr = (ptr); \
526 CTASSERT(((access) & CTLTYPE) == 0 || \
527 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
528 sysctl_add_oid(ctx, parent, nbr, name, \
529 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
530 __ptr, val, sysctl_handle_64, "QU", __DESCR(descr), NULL); \
531 })
532
533 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */
534 #define SYSCTL_NULL_INT_PTR ((int *)NULL)
535 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
536 SYSCTL_INT_WITH_LABEL(parent, nbr, name, access, ptr, val, descr, NULL)
537
538 #define SYSCTL_INT_WITH_LABEL(parent, nbr, name, access, ptr, val, descr, label) \
539 SYSCTL_OID_WITH_LABEL(parent, nbr, name, \
540 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
541 ptr, val, sysctl_handle_int, "I", descr, label); \
542 CTASSERT((((access) & CTLTYPE) == 0 || \
543 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \
544 sizeof(int) == sizeof(*(ptr)))
545
546 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
547 ({ \
548 int *__ptr = (ptr); \
549 CTASSERT(((access) & CTLTYPE) == 0 || \
550 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
551 sysctl_add_oid(ctx, parent, nbr, name, \
552 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
553 __ptr, val, sysctl_handle_int, "I", __DESCR(descr), NULL); \
554 })
555
556 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
557 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL)
558 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
559 SYSCTL_OID(parent, nbr, name, \
560 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
561 ptr, val, sysctl_handle_int, "IU", descr); \
562 CTASSERT((((access) & CTLTYPE) == 0 || \
563 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \
564 sizeof(unsigned) == sizeof(*(ptr)))
565
566 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
567 ({ \
568 unsigned *__ptr = (ptr); \
569 CTASSERT(((access) & CTLTYPE) == 0 || \
570 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \
571 sysctl_add_oid(ctx, parent, nbr, name, \
572 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
573 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr), NULL); \
574 })
575
576 /* Oid for a long. The pointer must be non NULL. */
577 #define SYSCTL_NULL_LONG_PTR ((long *)NULL)
578 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
579 SYSCTL_OID(parent, nbr, name, \
580 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
581 ptr, val, sysctl_handle_long, "L", descr); \
582 CTASSERT((((access) & CTLTYPE) == 0 || \
583 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \
584 sizeof(long) == sizeof(*(ptr)))
585
586 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
587 ({ \
588 long *__ptr = (ptr); \
589 CTASSERT(((access) & CTLTYPE) == 0 || \
590 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \
591 sysctl_add_oid(ctx, parent, nbr, name, \
592 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
593 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr), NULL); \
594 })
595
596 /* Oid for an unsigned long. The pointer must be non NULL. */
597 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL)
598 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
599 SYSCTL_OID(parent, nbr, name, \
600 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
601 ptr, val, sysctl_handle_long, "LU", descr); \
602 CTASSERT((((access) & CTLTYPE) == 0 || \
603 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \
604 sizeof(unsigned long) == sizeof(*(ptr)))
605
606 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
607 ({ \
608 unsigned long *__ptr = (ptr); \
609 CTASSERT(((access) & CTLTYPE) == 0 || \
610 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \
611 sysctl_add_oid(ctx, parent, nbr, name, \
612 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
613 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr), NULL); \
614 })
615
616 /* Oid for a quad. The pointer must be non NULL. */
617 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL)
618 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
619 SYSCTL_OID(parent, nbr, name, \
620 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
621 ptr, val, sysctl_handle_64, "Q", descr); \
622 CTASSERT((((access) & CTLTYPE) == 0 || \
623 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
624 sizeof(int64_t) == sizeof(*(ptr)))
625
626 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \
627 ({ \
628 int64_t *__ptr = (ptr); \
629 CTASSERT(((access) & CTLTYPE) == 0 || \
630 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
631 sysctl_add_oid(ctx, parent, nbr, name, \
632 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
633 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr), NULL); \
634 })
635
636 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL)
637 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \
638 SYSCTL_OID(parent, nbr, name, \
639 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
640 ptr, val, sysctl_handle_64, "QU", descr); \
641 CTASSERT((((access) & CTLTYPE) == 0 || \
642 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
643 sizeof(uint64_t) == sizeof(*(ptr)))
644
645 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \
646 ({ \
647 uint64_t *__ptr = (ptr); \
648 CTASSERT(((access) & CTLTYPE) == 0 || \
649 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
650 sysctl_add_oid(ctx, parent, nbr, name, \
651 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
652 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr), NULL); \
653 })
654
655 /* Oid for a CPU dependent variable */
656 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \
657 ({ \
658 struct sysctl_oid *__ret; \
659 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \
660 sizeof(unsigned) == sizeof(*(ptr))) && \
661 ((access) & CTLTYPE) == 0); \
662 if (sizeof(uint64_t) == sizeof(*(ptr))) { \
663 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
664 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
665 (ptr), 0, sysctl_handle_64, "QU", \
666 __DESCR(descr), NULL); \
667 } else { \
668 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
669 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
670 (ptr), 0, sysctl_handle_int, "IU", \
671 __DESCR(descr), NULL); \
672 } \
673 __ret; \
674 })
675
676 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */
677 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \
678 SYSCTL_OID(parent, nbr, name, \
679 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
680 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \
681 CTASSERT((((access) & CTLTYPE) == 0 || \
682 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
683 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
684 sizeof(uint64_t) == sizeof(**(ptr)))
685
686 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \
687 ({ \
688 counter_u64_t *__ptr = (ptr); \
689 CTASSERT(((access) & CTLTYPE) == 0 || \
690 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
691 sysctl_add_oid(ctx, parent, nbr, name, \
692 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
693 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr), \
694 NULL); \
695 })
696
697 /* Oid for an array of counter(9)s. The pointer and length must be non zero. */
698 #define SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \
699 SYSCTL_OID(parent, nbr, name, \
700 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
701 (ptr), (len), sysctl_handle_counter_u64_array, "S", descr); \
702 CTASSERT((((access) & CTLTYPE) == 0 || \
703 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) && \
704 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
705 sizeof(uint64_t) == sizeof(**(ptr)))
706
707 #define SYSCTL_ADD_COUNTER_U64_ARRAY(ctx, parent, nbr, name, access, \
708 ptr, len, descr) \
709 ({ \
710 counter_u64_t *__ptr = (ptr); \
711 CTASSERT(((access) & CTLTYPE) == 0 || \
712 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
713 sysctl_add_oid(ctx, parent, nbr, name, \
714 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
715 __ptr, len, sysctl_handle_counter_u64_array, "S", \
716 __DESCR(descr), NULL); \
717 })
718
719 /* Oid for an opaque object. Specified by a pointer and a length. */
720 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
721 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
722 ptr, len, sysctl_handle_opaque, fmt, descr); \
723 CTASSERT(((access) & CTLTYPE) == 0 || \
724 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
725
726 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \
727 ({ \
728 CTASSERT(((access) & CTLTYPE) == 0 || \
729 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
730 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
731 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr), NULL); \
732 })
733
734 /* Oid for a struct. Specified by a pointer and a type. */
735 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
736 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
737 ptr, sizeof(struct type), sysctl_handle_opaque, \
738 "S," #type, descr); \
739 CTASSERT(((access) & CTLTYPE) == 0 || \
740 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
741
742 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
743 ({ \
744 CTASSERT(((access) & CTLTYPE) == 0 || \
745 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
746 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
747 (ptr), sizeof(struct type), \
748 sysctl_handle_opaque, "S," #type, __DESCR(descr), NULL); \
749 })
750
751 /* Oid for a procedure. Specified by a pointer and an arg. */
752 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
753 SYSCTL_OID(parent, nbr, name, (access), \
754 ptr, arg, handler, fmt, descr); \
755 CTASSERT(((access) & CTLTYPE) != 0)
756
757 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
758 ({ \
759 CTASSERT(((access) & CTLTYPE) != 0); \
760 sysctl_add_oid(ctx, parent, nbr, name, (access), \
761 (ptr), (arg), (handler), (fmt), __DESCR(descr), NULL); \
762 })
763
764 /* Oid to handle limits on uma(9) zone specified by pointer. */
765 #define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \
766 SYSCTL_OID(parent, nbr, name, \
767 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
768 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \
769 CTASSERT(((access) & CTLTYPE) == 0 || \
770 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
771
772 #define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \
773 ({ \
774 uma_zone_t __ptr = (ptr); \
775 CTASSERT(((access) & CTLTYPE) == 0 || \
776 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
777 sysctl_add_oid(ctx, parent, nbr, name, \
778 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
779 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr), \
780 NULL); \
781 })
782
783 /* Oid to obtain current use of uma(9) zone specified by pointer. */
784 #define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \
785 SYSCTL_OID(parent, nbr, name, \
786 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
787 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \
788 CTASSERT(((access) & CTLTYPE) == 0 || \
789 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
790
791 #define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \
792 ({ \
793 uma_zone_t __ptr = (ptr); \
794 CTASSERT(((access) & CTLTYPE) == 0 || \
795 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
796 sysctl_add_oid(ctx, parent, nbr, name, \
797 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
798 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr), \
799 NULL); \
800 })
801
802 /*
803 * A macro to generate a read-only sysctl to indicate the presence of optional
804 * kernel features.
805 */
806 #define FEATURE(name, desc) \
807 SYSCTL_INT_WITH_LABEL(_kern_features, OID_AUTO, name, \
808 CTLFLAG_RD | CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, desc, "feature")
809
810 #endif /* _KERNEL */
811
812 /*
813 * Top-level identifiers
814 */
815 #define CTL_UNSPEC 0 /* unused */
816 #define CTL_KERN 1 /* "high kernel": proc, limits */
817 #define CTL_VM 2 /* virtual memory */
818 #define CTL_VFS 3 /* filesystem, mount type is next */
819 #define CTL_NET 4 /* network, see socket.h */
820 #define CTL_DEBUG 5 /* debugging parameters */
821 #define CTL_HW 6 /* generic cpu/io */
822 #define CTL_MACHDEP 7 /* machine dependent */
823 #define CTL_USER 8 /* user-level */
824 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
825
826 /*
827 * CTL_KERN identifiers
828 */
829 #define KERN_OSTYPE 1 /* string: system version */
830 #define KERN_OSRELEASE 2 /* string: system release */
831 #define KERN_OSREV 3 /* int: system revision */
832 #define KERN_VERSION 4 /* string: compile time info */
833 #define KERN_MAXVNODES 5 /* int: max vnodes */
834 #define KERN_MAXPROC 6 /* int: max processes */
835 #define KERN_MAXFILES 7 /* int: max open files */
836 #define KERN_ARGMAX 8 /* int: max arguments to exec */
837 #define KERN_SECURELVL 9 /* int: system security level */
838 #define KERN_HOSTNAME 10 /* string: hostname */
839 #define KERN_HOSTID 11 /* int: host identifier */
840 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
841 #define KERN_VNODE 13 /* struct: vnode structures */
842 #define KERN_PROC 14 /* struct: process entries */
843 #define KERN_FILE 15 /* struct: file entries */
844 #define KERN_PROF 16 /* node: kernel profiling info */
845 #define KERN_POSIX1 17 /* int: POSIX.1 version */
846 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
847 #define KERN_JOB_CONTROL 19 /* int: is job control available */
848 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
849 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
850 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
851 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
852 #define KERN_OSRELDATE 24 /* int: kernel release date */
853 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
854 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
855 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
856 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
857 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
858 #define KERN_IPC 30 /* node: anything related to IPC */
859 #define KERN_DUMMY 31 /* unused */
860 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
861 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
862 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
863 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
864 #define KERN_HOSTUUID 36 /* string: host UUID identifier */
865 #define KERN_ARND 37 /* int: from arc4rand() */
866 #define KERN_MAXPHYS 38 /* int: MAXPHYS value */
867 /*
868 * KERN_PROC subtypes
869 */
870 #define KERN_PROC_ALL 0 /* everything */
871 #define KERN_PROC_PID 1 /* by process id */
872 #define KERN_PROC_PGRP 2 /* by process group id */
873 #define KERN_PROC_SESSION 3 /* by session of pid */
874 #define KERN_PROC_TTY 4 /* by controlling tty */
875 #define KERN_PROC_UID 5 /* by effective uid */
876 #define KERN_PROC_RUID 6 /* by real uid */
877 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
878 #define KERN_PROC_PROC 8 /* only return procs */
879 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
880 #define KERN_PROC_RGID 10 /* by real group id */
881 #define KERN_PROC_GID 11 /* by effective group id */
882 #define KERN_PROC_PATHNAME 12 /* path to executable */
883 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */
884 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */
885 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */
886 #define KERN_PROC_INC_THREAD 0x10 /*
887 * modifier for pid, pgrp, tty,
888 * uid, ruid, gid, rgid and proc
889 * This effectively uses 16-31
890 */
891 #define KERN_PROC_VMMAP 32 /* VM map entries for process */
892 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */
893 #define KERN_PROC_GROUPS 34 /* process groups */
894 #define KERN_PROC_ENV 35 /* get environment */
895 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */
896 #define KERN_PROC_RLIMIT 37 /* process resource limits */
897 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */
898 #define KERN_PROC_UMASK 39 /* process umask */
899 #define KERN_PROC_OSREL 40 /* osreldate for process binary */
900 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */
901 #define KERN_PROC_CWD 42 /* process current working directory */
902 #define KERN_PROC_NFDS 43 /* number of open file descriptors */
903
904 /*
905 * KERN_IPC identifiers
906 */
907 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
908 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
909 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
910 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
911 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
912 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
913 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
914
915 /*
916 * CTL_HW identifiers
917 */
918 #define HW_MACHINE 1 /* string: machine class */
919 #define HW_MODEL 2 /* string: specific machine model */
920 #define HW_NCPU 3 /* int: number of cpus */
921 #define HW_BYTEORDER 4 /* int: machine byte order */
922 #define HW_PHYSMEM 5 /* int: total memory */
923 #define HW_USERMEM 6 /* int: non-kernel memory */
924 #define HW_PAGESIZE 7 /* int: software page size */
925 #define HW_DISKNAMES 8 /* strings: disk drive names */
926 #define HW_DISKSTATS 9 /* struct: diskstats[] */
927 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
928 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
929 #define HW_REALMEM 12 /* int: 'real' memory */
930
931 /*
932 * CTL_USER definitions
933 */
934 #define USER_CS_PATH 1 /* string: _CS_PATH */
935 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
936 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
937 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
938 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
939 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
940 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
941 #define USER_LINE_MAX 8 /* int: LINE_MAX */
942 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
943 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
944 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
945 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
946 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
947 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
948 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
949 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
950 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
951 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
952 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
953 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
954
955 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
956 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
957 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
958 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
959 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
960 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
961 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
962 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
963 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
964 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
965 #define CTL_P1003_1B_FSYNC 11 /* boolean */
966 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
967 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
968 #define CTL_P1003_1B_TIMERS 14 /* boolean */
969 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
970 #define CTL_P1003_1B_AIO_MAX 16 /* int */
971 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
972 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
973 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
974 #define CTL_P1003_1B_PAGESIZE 20 /* int */
975 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
976 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
977 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
978 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
979 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
980
981 #define CTL_P1003_1B_MAXID 26
982
983 #ifdef _KERNEL
984
985 /*
986 * Declare some common oids.
987 */
988 extern struct sysctl_oid_list sysctl__children;
989 SYSCTL_DECL(_kern);
990 SYSCTL_DECL(_kern_features);
991 SYSCTL_DECL(_kern_ipc);
992 SYSCTL_DECL(_kern_proc);
993 SYSCTL_DECL(_kern_sched);
994 SYSCTL_DECL(_kern_sched_stats);
995 SYSCTL_DECL(_sysctl);
996 SYSCTL_DECL(_vm);
997 SYSCTL_DECL(_vm_stats);
998 SYSCTL_DECL(_vm_stats_misc);
999 SYSCTL_DECL(_vfs);
1000 SYSCTL_DECL(_net);
1001 SYSCTL_DECL(_debug);
1002 SYSCTL_DECL(_debug_sizeof);
1003 SYSCTL_DECL(_dev);
1004 SYSCTL_DECL(_hw);
1005 SYSCTL_DECL(_hw_bus);
1006 SYSCTL_DECL(_hw_bus_devices);
1007 SYSCTL_DECL(_hw_bus_info);
1008 SYSCTL_DECL(_machdep);
1009 SYSCTL_DECL(_user);
1010 SYSCTL_DECL(_compat);
1011 SYSCTL_DECL(_regression);
1012 SYSCTL_DECL(_security);
1013 SYSCTL_DECL(_security_bsd);
1014
1015 extern char machine[];
1016 extern char osrelease[];
1017 extern char ostype[];
1018 extern char kern_ident[];
1019
1020 /* Dynamic oid handling */
1021 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
1022 struct sysctl_oid_list *parent, int nbr, const char *name, int kind,
1023 void *arg1, intmax_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS),
1024 const char *fmt, const char *descr, const char *label);
1025 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del,
1026 int recurse);
1027 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name);
1028 int sysctl_move_oid(struct sysctl_oid *oidp,
1029 struct sysctl_oid_list *parent);
1030 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
1031 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
1032 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
1033 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
1034 struct sysctl_oid *oidp);
1035 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
1036 struct sysctl_oid *oidp);
1037 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
1038 struct sysctl_oid *oidp);
1039
1040 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1041 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1042 int flags);
1043 int kernel_sysctlbyname(struct thread *td, char *name, void *old,
1044 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1045 int flags);
1046 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1047 size_t *oldlenp, int inkernel, void *new, size_t newlen,
1048 size_t *retval, int flags);
1049 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
1050 int *nindx, struct sysctl_req *req);
1051 void sysctl_wlock(void);
1052 void sysctl_wunlock(void);
1053 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
1054
1055 struct sbuf;
1056 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int,
1057 struct sysctl_req *);
1058 #else /* !_KERNEL */
1059 #include <sys/cdefs.h>
1060
1061 __BEGIN_DECLS
1062 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t);
1063 int sysctlbyname(const char *, void *, size_t *, const void *, size_t);
1064 int sysctlnametomib(const char *, int *, size_t *);
1065 __END_DECLS
1066 #endif /* _KERNEL */
1067
1068 #endif /* !_SYS_SYSCTL_H_ */
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