2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Mike Karels at Berkeley Software Design, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
34 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93
38 #ifndef _SYS_SYSCTL_H_
39 #define _SYS_SYSCTL_H_
42 #include <sys/queue.h>
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.
55 #define CTL_MAXNAME 24 /* largest number of components supported */
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.
65 char *ctl_name; /* subsystem name */
66 int ctl_type; /* type of name */
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 */
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)
110 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
112 * Secure when the securelevel is raised to at least N.
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))
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
124 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
126 #define OID_AUTO (-1)
129 * The starting number for dynamically-assigned entries. WARNING!
130 * ALL static sysctl entries should have numbers LESS than this!
132 #define CTL_AUTO_START 0x100
135 #include <sys/linker_set.h>
138 /* XXX allow overspecification of type in external kernel modules */
139 #define SYSCTL_CT_ASSERT_MASK CTLTYPE
141 #define SYSCTL_CT_ASSERT_MASK 0
144 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \
145 intmax_t arg2, struct sysctl_req *req
147 /* definitions for sysctl_req 'lock' member */
148 #define REQ_UNWIRED 1
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 */
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.
162 struct thread *td; /* used for access checking */
163 int lock; /* wiring state */
167 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
171 int (*newfunc)(struct sysctl_req *, void *, size_t);
176 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
179 * This describes one "oid" in the MIB tree. Potentially more nodes can
180 * be hidden behind it, expanded by the handler.
183 struct sysctl_oid_list oid_children;
184 struct sysctl_oid_list *oid_parent;
185 SLIST_ENTRY(sysctl_oid) oid_link;
190 const char *oid_name;
191 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
195 const char *oid_descr;
196 const char *oid_label;
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)
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);
216 int sysctl_handle_uma_zone_max(SYSCTL_HANDLER_ARGS);
217 int sysctl_handle_uma_zone_cur(SYSCTL_HANDLER_ARGS);
219 int sysctl_msec_to_sbintime(SYSCTL_HANDLER_ARGS);
220 int sysctl_usec_to_sbintime(SYSCTL_HANDLER_ARGS);
222 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS);
223 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS);
224 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS);
227 * These functions are used to add/remove an oid from the mib.
229 void sysctl_register_oid(struct sysctl_oid *oidp);
230 void sysctl_register_disabled_oid(struct sysctl_oid *oidp);
231 void sysctl_enable_oid(struct sysctl_oid *oidp);
232 void sysctl_unregister_oid(struct sysctl_oid *oidp);
234 /* Declare a static oid to allow child oids to be added to it. */
235 #define SYSCTL_DECL(name) \
236 extern struct sysctl_oid sysctl__##name
238 /* Hide these in macros. */
239 #define SYSCTL_CHILDREN(oid_ptr) (&(oid_ptr)->oid_children)
240 #define SYSCTL_PARENT(oid_ptr) \
241 (((oid_ptr)->oid_parent != &sysctl__children) ? \
242 __containerof((oid_ptr)->oid_parent, struct sysctl_oid, \
243 oid_children) : (struct sysctl_oid *)NULL)
244 #define SYSCTL_STATIC_CHILDREN(oid_name) (&sysctl__##oid_name.oid_children)
246 /* === Structs and macros related to context handling. === */
248 /* All dynamically created sysctls can be tracked in a context list. */
249 struct sysctl_ctx_entry {
250 struct sysctl_oid *entry;
251 TAILQ_ENTRY(sysctl_ctx_entry) link;
254 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
256 #define SYSCTL_NODE_CHILDREN(parent, name) \
257 sysctl__##parent##_##name.oid_children
259 #ifndef NO_SYSCTL_DESCR
262 #define __DESCR(d) ""
265 /* This macro is only for internal use */
266 #define SYSCTL_OID_RAW(id, parent_child_head, nbr, name, kind, a1, a2, handler, fmt, descr, label) \
267 struct sysctl_oid id = { \
268 .oid_parent = (parent_child_head), \
269 .oid_children = SLIST_HEAD_INITIALIZER(&id.oid_children), \
270 .oid_number = (nbr), \
271 .oid_kind = (kind), \
274 .oid_name = (name), \
275 .oid_handler = (handler), \
277 .oid_descr = __DESCR(descr), \
278 .oid_label = (label), \
280 DATA_SET(sysctl_set, id)
282 /* This constructs a static "raw" MIB oid. */
283 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
284 SYSCTL_OID_WITH_LABEL(parent, nbr, name, kind, a1, a2, \
285 handler, fmt, descr, NULL)
287 #define SYSCTL_OID_WITH_LABEL(parent, nbr, name, kind, a1, a2, handler, fmt, descr, label) \
288 static SYSCTL_OID_RAW(sysctl__##parent##_##name, \
289 SYSCTL_CHILDREN(&sysctl__##parent), \
290 nbr, #name, kind, a1, a2, handler, fmt, descr, label)
292 /* This constructs a global "raw" MIB oid. */
293 #define SYSCTL_OID_GLOBAL(parent, nbr, name, kind, a1, a2, handler, fmt, descr, label) \
294 SYSCTL_OID_RAW(sysctl__##parent##_##name, \
295 SYSCTL_CHILDREN(&sysctl__##parent), \
296 nbr, #name, kind, a1, a2, handler, fmt, descr, label)
298 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
299 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr), NULL)
301 /* This constructs a root node from which other nodes can hang. */
302 #define SYSCTL_ROOT_NODE(nbr, name, access, handler, descr) \
303 SYSCTL_OID_RAW(sysctl___##name, &sysctl__children, \
304 nbr, #name, CTLTYPE_NODE|(access), NULL, 0, \
305 handler, "N", descr, NULL); \
306 CTASSERT(((access) & CTLTYPE) == 0 || \
307 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
309 /* This constructs a node from which other oids can hang. */
310 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
311 SYSCTL_NODE_WITH_LABEL(parent, nbr, name, access, handler, descr, NULL)
313 #define SYSCTL_NODE_WITH_LABEL(parent, nbr, name, access, handler, descr, label) \
314 SYSCTL_OID_GLOBAL(parent, nbr, name, CTLTYPE_NODE|(access), \
315 NULL, 0, handler, "N", descr, label); \
316 CTASSERT(((access) & CTLTYPE) == 0 || \
317 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE)
319 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
320 SYSCTL_ADD_NODE_WITH_LABEL(ctx, parent, nbr, name, access, \
321 handler, descr, NULL)
323 #define SYSCTL_ADD_NODE_WITH_LABEL(ctx, parent, nbr, name, access, handler, descr, label) \
325 CTASSERT(((access) & CTLTYPE) == 0 || \
326 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
327 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
328 NULL, 0, handler, "N", __DESCR(descr), label); \
331 #define SYSCTL_ADD_ROOT_NODE(ctx, nbr, name, access, handler, descr) \
333 CTASSERT(((access) & CTLTYPE) == 0 || \
334 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_NODE); \
335 sysctl_add_oid(ctx, &sysctl__children, nbr, name, \
336 CTLTYPE_NODE|(access), \
337 NULL, 0, handler, "N", __DESCR(descr), NULL); \
340 /* Oid for a string. len can be 0 to indicate '\0' termination. */
341 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
342 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
343 arg, len, sysctl_handle_string, "A", descr); \
344 CTASSERT(((access) & CTLTYPE) == 0 || \
345 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING)
347 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
349 char *__arg = (arg); \
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, len, sysctl_handle_string, "A", __DESCR(descr), \
357 /* Oid for a constant '\0' terminated string. */
358 #define SYSCTL_CONST_STRING(parent, nbr, name, access, arg, descr) \
359 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
360 __DECONST(char *, arg), 0, sysctl_handle_string, "A", descr); \
361 CTASSERT(!(access & CTLFLAG_WR)); \
362 CTASSERT(((access) & CTLTYPE) == 0 || \
363 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING)
365 #define SYSCTL_ADD_CONST_STRING(ctx, parent, nbr, name, access, arg, descr) \
367 char *__arg = __DECONST(char *, arg); \
368 CTASSERT(!(access & CTLFLAG_WR)); \
369 CTASSERT(((access) & CTLTYPE) == 0 || \
370 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \
371 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
372 __arg, 0, sysctl_handle_string, "A", __DESCR(descr), \
376 /* Oid for a bool. If ptr is NULL, val is returned. */
377 #define SYSCTL_NULL_BOOL_PTR ((bool *)NULL)
378 #define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \
379 SYSCTL_OID(parent, nbr, name, \
380 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
381 ptr, val, sysctl_handle_bool, "CU", descr); \
382 CTASSERT(((access) & CTLTYPE) == 0 && \
383 sizeof(bool) == sizeof(*(ptr)))
385 #define SYSCTL_ADD_BOOL(ctx, parent, nbr, name, access, ptr, val, descr) \
387 bool *__ptr = (ptr); \
388 CTASSERT(((access) & CTLTYPE) == 0); \
389 sysctl_add_oid(ctx, parent, nbr, name, \
390 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
391 __ptr, val, sysctl_handle_bool, "CU", __DESCR(descr), \
395 /* Oid for a signed 8-bit int. If ptr is NULL, val is returned. */
396 #define SYSCTL_NULL_S8_PTR ((int8_t *)NULL)
397 #define SYSCTL_S8(parent, nbr, name, access, ptr, val, descr) \
398 SYSCTL_OID(parent, nbr, name, \
399 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
400 ptr, val, sysctl_handle_8, "C", descr); \
401 CTASSERT((((access) & CTLTYPE) == 0 || \
402 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8) && \
403 sizeof(int8_t) == sizeof(*(ptr)))
405 #define SYSCTL_ADD_S8(ctx, parent, nbr, name, access, ptr, val, descr) \
407 int8_t *__ptr = (ptr); \
408 CTASSERT(((access) & CTLTYPE) == 0 || \
409 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S8); \
410 sysctl_add_oid(ctx, parent, nbr, name, \
411 CTLTYPE_S8 | CTLFLAG_MPSAFE | (access), \
412 __ptr, val, sysctl_handle_8, "C", __DESCR(descr), NULL); \
415 /* Oid for an unsigned 8-bit int. If ptr is NULL, val is returned. */
416 #define SYSCTL_NULL_U8_PTR ((uint8_t *)NULL)
417 #define SYSCTL_U8(parent, nbr, name, access, ptr, val, descr) \
418 SYSCTL_OID(parent, nbr, name, \
419 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
420 ptr, val, sysctl_handle_8, "CU", descr); \
421 CTASSERT((((access) & CTLTYPE) == 0 || \
422 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8) && \
423 sizeof(uint8_t) == sizeof(*(ptr)))
425 #define SYSCTL_ADD_U8(ctx, parent, nbr, name, access, ptr, val, descr) \
427 uint8_t *__ptr = (ptr); \
428 CTASSERT(((access) & CTLTYPE) == 0 || \
429 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U8); \
430 sysctl_add_oid(ctx, parent, nbr, name, \
431 CTLTYPE_U8 | CTLFLAG_MPSAFE | (access), \
432 __ptr, val, sysctl_handle_8, "CU", __DESCR(descr), NULL); \
435 /* Oid for a signed 16-bit int. If ptr is NULL, val is returned. */
436 #define SYSCTL_NULL_S16_PTR ((int16_t *)NULL)
437 #define SYSCTL_S16(parent, nbr, name, access, ptr, val, descr) \
438 SYSCTL_OID(parent, nbr, name, \
439 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
440 ptr, val, sysctl_handle_16, "S", descr); \
441 CTASSERT((((access) & CTLTYPE) == 0 || \
442 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16) && \
443 sizeof(int16_t) == sizeof(*(ptr)))
445 #define SYSCTL_ADD_S16(ctx, parent, nbr, name, access, ptr, val, descr) \
447 int16_t *__ptr = (ptr); \
448 CTASSERT(((access) & CTLTYPE) == 0 || \
449 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S16); \
450 sysctl_add_oid(ctx, parent, nbr, name, \
451 CTLTYPE_S16 | CTLFLAG_MPSAFE | (access), \
452 __ptr, val, sysctl_handle_16, "S", __DESCR(descr), NULL); \
455 /* Oid for an unsigned 16-bit int. If ptr is NULL, val is returned. */
456 #define SYSCTL_NULL_U16_PTR ((uint16_t *)NULL)
457 #define SYSCTL_U16(parent, nbr, name, access, ptr, val, descr) \
458 SYSCTL_OID(parent, nbr, name, \
459 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
460 ptr, val, sysctl_handle_16, "SU", descr); \
461 CTASSERT((((access) & CTLTYPE) == 0 || \
462 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16) && \
463 sizeof(uint16_t) == sizeof(*(ptr)))
465 #define SYSCTL_ADD_U16(ctx, parent, nbr, name, access, ptr, val, descr) \
467 uint16_t *__ptr = (ptr); \
468 CTASSERT(((access) & CTLTYPE) == 0 || \
469 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U16); \
470 sysctl_add_oid(ctx, parent, nbr, name, \
471 CTLTYPE_U16 | CTLFLAG_MPSAFE | (access), \
472 __ptr, val, sysctl_handle_16, "SU", __DESCR(descr), NULL); \
475 /* Oid for a signed 32-bit int. If ptr is NULL, val is returned. */
476 #define SYSCTL_NULL_S32_PTR ((int32_t *)NULL)
477 #define SYSCTL_S32(parent, nbr, name, access, ptr, val, descr) \
478 SYSCTL_OID(parent, nbr, name, \
479 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
480 ptr, val, sysctl_handle_32, "I", descr); \
481 CTASSERT((((access) & CTLTYPE) == 0 || \
482 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32) && \
483 sizeof(int32_t) == sizeof(*(ptr)))
485 #define SYSCTL_ADD_S32(ctx, parent, nbr, name, access, ptr, val, descr) \
487 int32_t *__ptr = (ptr); \
488 CTASSERT(((access) & CTLTYPE) == 0 || \
489 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S32); \
490 sysctl_add_oid(ctx, parent, nbr, name, \
491 CTLTYPE_S32 | CTLFLAG_MPSAFE | (access), \
492 __ptr, val, sysctl_handle_32, "I", __DESCR(descr), NULL); \
495 /* Oid for an unsigned 32-bit int. If ptr is NULL, val is returned. */
496 #define SYSCTL_NULL_U32_PTR ((uint32_t *)NULL)
497 #define SYSCTL_U32(parent, nbr, name, access, ptr, val, descr) \
498 SYSCTL_OID(parent, nbr, name, \
499 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
500 ptr, val, sysctl_handle_32, "IU", descr); \
501 CTASSERT((((access) & CTLTYPE) == 0 || \
502 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32) && \
503 sizeof(uint32_t) == sizeof(*(ptr)))
505 #define SYSCTL_ADD_U32(ctx, parent, nbr, name, access, ptr, val, descr) \
507 uint32_t *__ptr = (ptr); \
508 CTASSERT(((access) & CTLTYPE) == 0 || \
509 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U32); \
510 sysctl_add_oid(ctx, parent, nbr, name, \
511 CTLTYPE_U32 | CTLFLAG_MPSAFE | (access), \
512 __ptr, val, sysctl_handle_32, "IU", __DESCR(descr), NULL); \
515 /* Oid for a signed 64-bit int. If ptr is NULL, val is returned. */
516 #define SYSCTL_NULL_S64_PTR ((int64_t *)NULL)
517 #define SYSCTL_S64(parent, nbr, name, access, ptr, val, descr) \
518 SYSCTL_OID(parent, nbr, name, \
519 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
520 ptr, val, sysctl_handle_64, "Q", descr); \
521 CTASSERT((((access) & CTLTYPE) == 0 || \
522 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
523 sizeof(int64_t) == sizeof(*(ptr)))
525 #define SYSCTL_ADD_S64(ctx, parent, nbr, name, access, ptr, val, descr) \
527 int64_t *__ptr = (ptr); \
528 CTASSERT(((access) & CTLTYPE) == 0 || \
529 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
530 sysctl_add_oid(ctx, parent, nbr, name, \
531 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
532 __ptr, val, sysctl_handle_64, "Q", __DESCR(descr), NULL); \
535 /* Oid for an unsigned 64-bit int. If ptr is NULL, val is returned. */
536 #define SYSCTL_NULL_U64_PTR ((uint64_t *)NULL)
537 #define SYSCTL_U64(parent, nbr, name, access, ptr, val, descr) \
538 SYSCTL_OID(parent, nbr, name, \
539 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
540 ptr, val, sysctl_handle_64, "QU", descr); \
541 CTASSERT((((access) & CTLTYPE) == 0 || \
542 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
543 sizeof(uint64_t) == sizeof(*(ptr)))
545 #define SYSCTL_ADD_U64(ctx, parent, nbr, name, access, ptr, val, descr) \
547 uint64_t *__ptr = (ptr); \
548 CTASSERT(((access) & CTLTYPE) == 0 || \
549 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
550 sysctl_add_oid(ctx, parent, nbr, name, \
551 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
552 __ptr, val, sysctl_handle_64, "QU", __DESCR(descr), NULL); \
555 /* Oid for an int. If ptr is SYSCTL_NULL_INT_PTR, val is returned. */
556 #define SYSCTL_NULL_INT_PTR ((int *)NULL)
557 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
558 SYSCTL_INT_WITH_LABEL(parent, nbr, name, access, ptr, val, descr, NULL)
560 #define SYSCTL_INT_WITH_LABEL(parent, nbr, name, access, ptr, val, descr, label) \
561 SYSCTL_OID_WITH_LABEL(parent, nbr, name, \
562 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
563 ptr, val, sysctl_handle_int, "I", descr, label); \
564 CTASSERT((((access) & CTLTYPE) == 0 || \
565 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT) && \
566 sizeof(int) == sizeof(*(ptr)))
568 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
570 int *__ptr = (ptr); \
571 CTASSERT(((access) & CTLTYPE) == 0 || \
572 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
573 sysctl_add_oid(ctx, parent, nbr, name, \
574 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
575 __ptr, val, sysctl_handle_int, "I", __DESCR(descr), NULL); \
578 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
579 #define SYSCTL_NULL_UINT_PTR ((unsigned *)NULL)
580 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
581 SYSCTL_OID(parent, nbr, name, \
582 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
583 ptr, val, sysctl_handle_int, "IU", descr); \
584 CTASSERT((((access) & CTLTYPE) == 0 || \
585 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT) && \
586 sizeof(unsigned) == sizeof(*(ptr)))
588 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
590 unsigned *__ptr = (ptr); \
591 CTASSERT(((access) & CTLTYPE) == 0 || \
592 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_UINT); \
593 sysctl_add_oid(ctx, parent, nbr, name, \
594 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
595 __ptr, val, sysctl_handle_int, "IU", __DESCR(descr), NULL); \
598 /* Oid for a long. The pointer must be non NULL. */
599 #define SYSCTL_NULL_LONG_PTR ((long *)NULL)
600 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
601 SYSCTL_OID(parent, nbr, name, \
602 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
603 ptr, val, sysctl_handle_long, "L", descr); \
604 CTASSERT((((access) & CTLTYPE) == 0 || \
605 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG) && \
606 sizeof(long) == sizeof(*(ptr)))
608 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
610 long *__ptr = (ptr); \
611 CTASSERT(((access) & CTLTYPE) == 0 || \
612 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_LONG); \
613 sysctl_add_oid(ctx, parent, nbr, name, \
614 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
615 __ptr, 0, sysctl_handle_long, "L", __DESCR(descr), NULL); \
618 /* Oid for an unsigned long. The pointer must be non NULL. */
619 #define SYSCTL_NULL_ULONG_PTR ((unsigned long *)NULL)
620 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
621 SYSCTL_OID(parent, nbr, name, \
622 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
623 ptr, val, sysctl_handle_long, "LU", descr); \
624 CTASSERT((((access) & CTLTYPE) == 0 || \
625 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG) && \
626 sizeof(unsigned long) == sizeof(*(ptr)))
628 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
630 unsigned long *__ptr = (ptr); \
631 CTASSERT(((access) & CTLTYPE) == 0 || \
632 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_ULONG); \
633 sysctl_add_oid(ctx, parent, nbr, name, \
634 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
635 __ptr, 0, sysctl_handle_long, "LU", __DESCR(descr), NULL); \
638 /* Oid for a quad. The pointer must be non NULL. */
639 #define SYSCTL_NULL_QUAD_PTR ((int64_t *)NULL)
640 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
641 SYSCTL_OID(parent, nbr, name, \
642 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
643 ptr, val, sysctl_handle_64, "Q", descr); \
644 CTASSERT((((access) & CTLTYPE) == 0 || \
645 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64) && \
646 sizeof(int64_t) == sizeof(*(ptr)))
648 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \
650 int64_t *__ptr = (ptr); \
651 CTASSERT(((access) & CTLTYPE) == 0 || \
652 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
653 sysctl_add_oid(ctx, parent, nbr, name, \
654 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
655 __ptr, 0, sysctl_handle_64, "Q", __DESCR(descr), NULL); \
658 #define SYSCTL_NULL_UQUAD_PTR ((uint64_t *)NULL)
659 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \
660 SYSCTL_OID(parent, nbr, name, \
661 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
662 ptr, val, sysctl_handle_64, "QU", descr); \
663 CTASSERT((((access) & CTLTYPE) == 0 || \
664 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
665 sizeof(uint64_t) == sizeof(*(ptr)))
667 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \
669 uint64_t *__ptr = (ptr); \
670 CTASSERT(((access) & CTLTYPE) == 0 || \
671 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
672 sysctl_add_oid(ctx, parent, nbr, name, \
673 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
674 __ptr, 0, sysctl_handle_64, "QU", __DESCR(descr), NULL); \
677 /* Oid for a CPU dependent variable */
678 #define SYSCTL_ADD_UAUTO(ctx, parent, nbr, name, access, ptr, descr) \
680 struct sysctl_oid *__ret; \
681 CTASSERT((sizeof(uint64_t) == sizeof(*(ptr)) || \
682 sizeof(unsigned) == sizeof(*(ptr))) && \
683 ((access) & CTLTYPE) == 0); \
684 if (sizeof(uint64_t) == sizeof(*(ptr))) { \
685 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
686 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
687 (ptr), 0, sysctl_handle_64, "QU", \
688 __DESCR(descr), NULL); \
690 __ret = sysctl_add_oid(ctx, parent, nbr, name, \
691 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
692 (ptr), 0, sysctl_handle_int, "IU", \
693 __DESCR(descr), NULL); \
698 /* Oid for a 64-bit unsigned counter(9). The pointer must be non NULL. */
699 #define SYSCTL_COUNTER_U64(parent, nbr, name, access, ptr, descr) \
700 SYSCTL_OID(parent, nbr, name, \
701 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
702 (ptr), 0, sysctl_handle_counter_u64, "QU", descr); \
703 CTASSERT((((access) & CTLTYPE) == 0 || \
704 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64) && \
705 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
706 sizeof(uint64_t) == sizeof(**(ptr)))
708 #define SYSCTL_ADD_COUNTER_U64(ctx, parent, nbr, name, access, ptr, descr) \
710 counter_u64_t *__ptr = (ptr); \
711 CTASSERT(((access) & CTLTYPE) == 0 || \
712 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_U64); \
713 sysctl_add_oid(ctx, parent, nbr, name, \
714 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
715 __ptr, 0, sysctl_handle_counter_u64, "QU", __DESCR(descr), \
719 /* Oid for an array of counter(9)s. The pointer and length must be non zero. */
720 #define SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \
721 SYSCTL_OID(parent, nbr, name, \
722 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
723 (ptr), (len), sysctl_handle_counter_u64_array, "S", descr); \
724 CTASSERT((((access) & CTLTYPE) == 0 || \
725 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) && \
726 sizeof(counter_u64_t) == sizeof(*(ptr)) && \
727 sizeof(uint64_t) == sizeof(**(ptr)))
729 #define SYSCTL_ADD_COUNTER_U64_ARRAY(ctx, parent, nbr, name, access, \
732 counter_u64_t *__ptr = (ptr); \
733 CTASSERT(((access) & CTLTYPE) == 0 || \
734 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
735 sysctl_add_oid(ctx, parent, nbr, name, \
736 CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | (access), \
737 __ptr, len, sysctl_handle_counter_u64_array, "S", \
738 __DESCR(descr), NULL); \
741 /* Oid for an opaque object. Specified by a pointer and a length. */
742 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
743 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
744 ptr, len, sysctl_handle_opaque, fmt, descr); \
745 CTASSERT(((access) & CTLTYPE) == 0 || \
746 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
748 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr) \
750 CTASSERT(((access) & CTLTYPE) == 0 || \
751 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
752 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
753 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr), NULL); \
756 /* Oid for a struct. Specified by a pointer and a type. */
757 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
758 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
759 ptr, sizeof(struct type), sysctl_handle_opaque, \
760 "S," #type, descr); \
761 CTASSERT(((access) & CTLTYPE) == 0 || \
762 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE)
764 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
766 CTASSERT(((access) & CTLTYPE) == 0 || \
767 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE); \
768 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
769 (ptr), sizeof(struct type), \
770 sysctl_handle_opaque, "S," #type, __DESCR(descr), NULL); \
773 /* Oid for a procedure. Specified by a pointer and an arg. */
774 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
775 SYSCTL_OID(parent, nbr, name, (access), \
776 ptr, arg, handler, fmt, descr); \
777 CTASSERT(((access) & CTLTYPE) != 0)
779 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
781 CTASSERT(((access) & CTLTYPE) != 0); \
782 sysctl_add_oid(ctx, parent, nbr, name, (access), \
783 (ptr), (arg), (handler), (fmt), __DESCR(descr), NULL); \
786 /* Oid to handle limits on uma(9) zone specified by pointer. */
787 #define SYSCTL_UMA_MAX(parent, nbr, name, access, ptr, descr) \
788 SYSCTL_OID(parent, nbr, name, \
789 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
790 (ptr), 0, sysctl_handle_uma_zone_max, "I", descr); \
791 CTASSERT(((access) & CTLTYPE) == 0 || \
792 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
794 #define SYSCTL_ADD_UMA_MAX(ctx, parent, nbr, name, access, ptr, descr) \
796 uma_zone_t __ptr = (ptr); \
797 CTASSERT(((access) & CTLTYPE) == 0 || \
798 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
799 sysctl_add_oid(ctx, parent, nbr, name, \
800 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
801 __ptr, 0, sysctl_handle_uma_zone_max, "I", __DESCR(descr), \
805 /* Oid to obtain current use of uma(9) zone specified by pointer. */
806 #define SYSCTL_UMA_CUR(parent, nbr, name, access, ptr, descr) \
807 SYSCTL_OID(parent, nbr, name, \
808 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
809 (ptr), 0, sysctl_handle_uma_zone_cur, "I", descr); \
810 CTASSERT(((access) & CTLTYPE) == 0 || \
811 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT)
813 #define SYSCTL_ADD_UMA_CUR(ctx, parent, nbr, name, access, ptr, descr) \
815 uma_zone_t __ptr = (ptr); \
816 CTASSERT(((access) & CTLTYPE) == 0 || \
817 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_INT); \
818 sysctl_add_oid(ctx, parent, nbr, name, \
819 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
820 __ptr, 0, sysctl_handle_uma_zone_cur, "I", __DESCR(descr), \
824 /* OID expressing a sbintime_t as microseconds */
825 #define SYSCTL_SBINTIME_USEC(parent, nbr, name, access, ptr, descr) \
826 SYSCTL_OID(parent, nbr, name, \
827 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
828 (ptr), 0, sysctl_usec_to_sbintime, "Q", descr); \
829 CTASSERT(((access) & CTLTYPE) == 0 || \
830 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64)
831 #define SYSCTL_ADD_SBINTIME_USEC(ctx, parent, nbr, name, access, ptr, descr) \
833 sbintime_t *__ptr = (ptr); \
834 CTASSERT(((access) & CTLTYPE) == 0 || \
835 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
836 sysctl_add_oid(ctx, parent, nbr, name, \
837 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
838 __ptr, 0, sysctl_usec_to_sbintime, "Q", __DESCR(descr), \
842 /* OID expressing a sbintime_t as milliseconds */
843 #define SYSCTL_SBINTIME_MSEC(parent, nbr, name, access, ptr, descr) \
844 SYSCTL_OID(parent, nbr, name, \
845 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
846 (ptr), 0, sysctl_msec_to_sbintime, "Q", descr); \
847 CTASSERT(((access) & CTLTYPE) == 0 || \
848 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64)
849 #define SYSCTL_ADD_SBINTIME_MSEC(ctx, parent, nbr, name, access, ptr, descr) \
851 sbintime_t *__ptr = (ptr); \
852 CTASSERT(((access) & CTLTYPE) == 0 || \
853 ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_S64); \
854 sysctl_add_oid(ctx, parent, nbr, name, \
855 CTLTYPE_INT | CTLFLAG_MPSAFE | CTLFLAG_RD | (access), \
856 __ptr, 0, sysctl_msec_to_sbintime, "Q", __DESCR(descr), \
861 * A macro to generate a read-only sysctl to indicate the presence of optional
864 #define FEATURE(name, desc) \
865 SYSCTL_INT_WITH_LABEL(_kern_features, OID_AUTO, name, \
866 CTLFLAG_RD | CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, desc, "feature")
871 * Top-level identifiers
873 #define CTL_UNSPEC 0 /* unused */
874 #define CTL_KERN 1 /* "high kernel": proc, limits */
875 #define CTL_VM 2 /* virtual memory */
876 #define CTL_VFS 3 /* filesystem, mount type is next */
877 #define CTL_NET 4 /* network, see socket.h */
878 #define CTL_DEBUG 5 /* debugging parameters */
879 #define CTL_HW 6 /* generic cpu/io */
880 #define CTL_MACHDEP 7 /* machine dependent */
881 #define CTL_USER 8 /* user-level */
882 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
885 * CTL_KERN identifiers
887 #define KERN_OSTYPE 1 /* string: system version */
888 #define KERN_OSRELEASE 2 /* string: system release */
889 #define KERN_OSREV 3 /* int: system revision */
890 #define KERN_VERSION 4 /* string: compile time info */
891 #define KERN_MAXVNODES 5 /* int: max vnodes */
892 #define KERN_MAXPROC 6 /* int: max processes */
893 #define KERN_MAXFILES 7 /* int: max open files */
894 #define KERN_ARGMAX 8 /* int: max arguments to exec */
895 #define KERN_SECURELVL 9 /* int: system security level */
896 #define KERN_HOSTNAME 10 /* string: hostname */
897 #define KERN_HOSTID 11 /* int: host identifier */
898 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
899 #define KERN_VNODE 13 /* struct: vnode structures */
900 #define KERN_PROC 14 /* struct: process entries */
901 #define KERN_FILE 15 /* struct: file entries */
902 #define KERN_PROF 16 /* node: kernel profiling info */
903 #define KERN_POSIX1 17 /* int: POSIX.1 version */
904 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
905 #define KERN_JOB_CONTROL 19 /* int: is job control available */
906 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
907 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
908 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
909 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
910 #define KERN_OSRELDATE 24 /* int: kernel release date */
911 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
912 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
913 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
914 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
915 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
916 #define KERN_IPC 30 /* node: anything related to IPC */
917 #define KERN_DUMMY 31 /* unused */
918 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
919 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
920 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
921 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
922 #define KERN_HOSTUUID 36 /* string: host UUID identifier */
923 #define KERN_ARND 37 /* int: from arc4rand() */
924 #define KERN_MAXPHYS 38 /* int: MAXPHYS value */
928 #define KERN_PROC_ALL 0 /* everything */
929 #define KERN_PROC_PID 1 /* by process id */
930 #define KERN_PROC_PGRP 2 /* by process group id */
931 #define KERN_PROC_SESSION 3 /* by session of pid */
932 #define KERN_PROC_TTY 4 /* by controlling tty */
933 #define KERN_PROC_UID 5 /* by effective uid */
934 #define KERN_PROC_RUID 6 /* by real uid */
935 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
936 #define KERN_PROC_PROC 8 /* only return procs */
937 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
938 #define KERN_PROC_RGID 10 /* by real group id */
939 #define KERN_PROC_GID 11 /* by effective group id */
940 #define KERN_PROC_PATHNAME 12 /* path to executable */
941 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */
942 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */
943 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */
944 #define KERN_PROC_INC_THREAD 0x10 /*
945 * modifier for pid, pgrp, tty,
946 * uid, ruid, gid, rgid and proc
947 * This effectively uses 16-31
949 #define KERN_PROC_VMMAP 32 /* VM map entries for process */
950 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */
951 #define KERN_PROC_GROUPS 34 /* process groups */
952 #define KERN_PROC_ENV 35 /* get environment */
953 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */
954 #define KERN_PROC_RLIMIT 37 /* process resource limits */
955 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */
956 #define KERN_PROC_UMASK 39 /* process umask */
957 #define KERN_PROC_OSREL 40 /* osreldate for process binary */
958 #define KERN_PROC_SIGTRAMP 41 /* signal trampoline location */
959 #define KERN_PROC_CWD 42 /* process current working directory */
960 #define KERN_PROC_NFDS 43 /* number of open file descriptors */
963 * KERN_IPC identifiers
965 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
966 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
967 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
968 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
969 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
970 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
971 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
976 #define HW_MACHINE 1 /* string: machine class */
977 #define HW_MODEL 2 /* string: specific machine model */
978 #define HW_NCPU 3 /* int: number of cpus */
979 #define HW_BYTEORDER 4 /* int: machine byte order */
980 #define HW_PHYSMEM 5 /* int: total memory */
981 #define HW_USERMEM 6 /* int: non-kernel memory */
982 #define HW_PAGESIZE 7 /* int: software page size */
983 #define HW_DISKNAMES 8 /* strings: disk drive names */
984 #define HW_DISKSTATS 9 /* struct: diskstats[] */
985 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
986 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
987 #define HW_REALMEM 12 /* int: 'real' memory */
990 * CTL_USER definitions
992 #define USER_CS_PATH 1 /* string: _CS_PATH */
993 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
994 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
995 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
996 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
997 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
998 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
999 #define USER_LINE_MAX 8 /* int: LINE_MAX */
1000 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
1001 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
1002 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
1003 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
1004 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
1005 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
1006 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
1007 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
1008 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
1009 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
1010 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
1011 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
1013 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
1014 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
1015 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
1016 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
1017 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
1018 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
1019 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
1020 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
1021 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
1022 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
1023 #define CTL_P1003_1B_FSYNC 11 /* boolean */
1024 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
1025 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
1026 #define CTL_P1003_1B_TIMERS 14 /* boolean */
1027 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
1028 #define CTL_P1003_1B_AIO_MAX 16 /* int */
1029 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
1030 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
1031 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
1032 #define CTL_P1003_1B_PAGESIZE 20 /* int */
1033 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
1034 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
1035 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
1036 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
1037 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
1039 #define CTL_P1003_1B_MAXID 26
1044 * Declare some common oids.
1046 extern struct sysctl_oid_list sysctl__children;
1048 SYSCTL_DECL(_kern_features);
1049 SYSCTL_DECL(_kern_ipc);
1050 SYSCTL_DECL(_kern_proc);
1051 SYSCTL_DECL(_kern_sched);
1052 SYSCTL_DECL(_kern_sched_stats);
1053 SYSCTL_DECL(_sysctl);
1055 SYSCTL_DECL(_vm_stats);
1056 SYSCTL_DECL(_vm_stats_misc);
1059 SYSCTL_DECL(_debug);
1060 SYSCTL_DECL(_debug_sizeof);
1063 SYSCTL_DECL(_hw_bus);
1064 SYSCTL_DECL(_hw_bus_devices);
1065 SYSCTL_DECL(_hw_bus_info);
1066 SYSCTL_DECL(_machdep);
1068 SYSCTL_DECL(_compat);
1069 SYSCTL_DECL(_regression);
1070 SYSCTL_DECL(_security);
1071 SYSCTL_DECL(_security_bsd);
1073 extern char machine[];
1074 extern char osrelease[];
1075 extern char ostype[];
1076 extern char kern_ident[];
1078 /* Dynamic oid handling */
1079 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
1080 struct sysctl_oid_list *parent, int nbr, const char *name, int kind,
1081 void *arg1, intmax_t arg2, int (*handler)(SYSCTL_HANDLER_ARGS),
1082 const char *fmt, const char *descr, const char *label);
1083 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del,
1085 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name);
1086 int sysctl_move_oid(struct sysctl_oid *oidp,
1087 struct sysctl_oid_list *parent);
1088 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
1089 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
1090 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
1091 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
1092 struct sysctl_oid *oidp);
1093 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
1094 struct sysctl_oid *oidp);
1095 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
1096 struct sysctl_oid *oidp);
1098 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1099 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1101 int kernel_sysctlbyname(struct thread *td, char *name, void *old,
1102 size_t *oldlenp, void *new, size_t newlen, size_t *retval,
1104 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
1105 size_t *oldlenp, int inkernel, const void *new, size_t newlen,
1106 size_t *retval, int flags);
1107 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
1108 int *nindx, struct sysctl_req *req);
1109 void sysctl_wlock(void);
1110 void sysctl_wunlock(void);
1111 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
1114 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int,
1115 struct sysctl_req *);
1116 #else /* !_KERNEL */
1117 #include <sys/cdefs.h>
1120 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t);
1121 int sysctlbyname(const char *, void *, size_t *, const void *, size_t);
1122 int sysctlnametomib(const char *, int *, size_t *);
1124 #endif /* _KERNEL */
1126 #endif /* !_SYS_SYSCTL_H_ */