2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Mike Karels at Berkeley Software Design, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
32 * @(#)sysctl.h 8.1 (Berkeley) 6/2/93
36 #ifndef _SYS_SYSCTL_H_
37 #define _SYS_SYSCTL_H_
39 #include <sys/queue.h>
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.
51 #define CTL_MAXNAME 24 /* largest number of components supported */
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.
61 char *ctl_name; /* subsystem name */
62 int ctl_type; /* type of name */
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 */
77 #define CTLFLAG_RD 0x80000000 /* Allow reads of variable */
78 #define CTLFLAG_WR 0x40000000 /* Allow writes to the variable */
79 #define CTLFLAG_RW (CTLFLAG_RD|CTLFLAG_WR)
80 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */
81 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */
82 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */
83 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */
84 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */
85 #define CTLMASK_SECURE 0x00F00000 /* Secure level */
86 #define CTLFLAG_TUN 0x00080000 /* Tunable variable */
87 #define CTLFLAG_MPSAFE 0x00040000 /* Handler is MP safe */
88 #define CTLFLAG_VNET 0x00020000 /* Prisons with vnet can fiddle */
89 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
90 #define CTLFLAG_DYING 0x00010000 /* oid is being removed */
91 #define CTLFLAG_CAPRD 0x00008000 /* Can be read in capability mode */
92 #define CTLFLAG_CAPWR 0x00004000 /* Can be written in capability mode */
93 #define CTLFLAG_CAPRW (CTLFLAG_CAPRD|CTLFLAG_CAPWR)
96 * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
98 * Secure when the securelevel is raised to at least N.
100 #define CTLSHIFT_SECURE 20
101 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
102 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
103 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
106 * USE THIS instead of a hardwired number from the categories below
107 * to get dynamically assigned sysctl entries using the linker-set
108 * technology. This is the way nearly all new sysctl variables should
110 * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
112 #define OID_AUTO (-1)
115 * The starting number for dynamically-assigned entries. WARNING!
116 * ALL static sysctl entries should have numbers LESS than this!
118 #define CTL_AUTO_START 0x100
121 #include <sys/linker_set.h>
123 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, \
124 intptr_t arg2, struct sysctl_req *req
126 /* definitions for sysctl_req 'lock' member */
127 #define REQ_UNWIRED 1
130 /* definitions for sysctl_req 'flags' member */
131 #if defined(__amd64__) || defined(__ia64__) || defined(__powerpc64__) || \
132 (defined(__mips__) && defined(__mips_n64))
133 #define SCTL_MASK32 1 /* 32 bit emulation */
137 * This describes the access space for a sysctl request. This is needed
138 * so that we can use the interface from the kernel or from user-space.
141 struct thread *td; /* used for access checking */
142 int lock; /* wiring state */
146 int (*oldfunc)(struct sysctl_req *, const void *, size_t);
150 int (*newfunc)(struct sysctl_req *, void *, size_t);
155 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
158 * This describes one "oid" in the MIB tree. Potentially more nodes can
159 * be hidden behind it, expanded by the handler.
162 struct sysctl_oid_list *oid_parent;
163 SLIST_ENTRY(sysctl_oid) oid_link;
168 const char *oid_name;
169 int (*oid_handler)(SYSCTL_HANDLER_ARGS);
173 const char *oid_descr;
176 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
177 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
179 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
180 int sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS);
181 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
182 int sysctl_handle_64(SYSCTL_HANDLER_ARGS);
183 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
184 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
186 int sysctl_dpcpu_int(SYSCTL_HANDLER_ARGS);
187 int sysctl_dpcpu_long(SYSCTL_HANDLER_ARGS);
188 int sysctl_dpcpu_quad(SYSCTL_HANDLER_ARGS);
191 * These functions are used to add/remove an oid from the mib.
193 void sysctl_register_oid(struct sysctl_oid *oidp);
194 void sysctl_unregister_oid(struct sysctl_oid *oidp);
196 /* Declare a static oid to allow child oids to be added to it. */
197 #define SYSCTL_DECL(name) \
198 extern struct sysctl_oid_list sysctl_##name##_children
200 /* Hide these in macros */
201 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
203 #define SYSCTL_CHILDREN_SET(oid_ptr, val) \
204 (oid_ptr)->oid_arg1 = (val);
205 #define SYSCTL_STATIC_CHILDREN(oid_name) \
206 (&sysctl_##oid_name##_children)
208 /* === Structs and macros related to context handling === */
210 /* All dynamically created sysctls can be tracked in a context list. */
211 struct sysctl_ctx_entry {
212 struct sysctl_oid *entry;
213 TAILQ_ENTRY(sysctl_ctx_entry) link;
216 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
218 #define SYSCTL_NODE_CHILDREN(parent, name) \
219 sysctl_##parent##_##name##_children
222 * These macros provide type safety for sysctls. SYSCTL_ALLOWED_TYPES()
223 * defines a transparent union of the allowed types. SYSCTL_ASSERT_TYPE()
224 * and SYSCTL_ADD_ASSERT_TYPE() use the transparent union to assert that
225 * the pointer matches the allowed types.
227 * The allow_0 member allows a literal 0 to be passed for ptr.
229 #define SYSCTL_ALLOWED_TYPES(type, decls) \
230 union sysctl_##type { \
233 } __attribute__((__transparent_union__)); \
235 static inline void * \
236 __sysctl_assert_##type(union sysctl_##type ptr) \
242 SYSCTL_ALLOWED_TYPES(INT, int *a; );
243 SYSCTL_ALLOWED_TYPES(UINT, unsigned int *a; );
244 SYSCTL_ALLOWED_TYPES(LONG, long *a; );
245 SYSCTL_ALLOWED_TYPES(ULONG, unsigned long *a; );
246 SYSCTL_ALLOWED_TYPES(INT64, int64_t *a; long long *b; );
247 SYSCTL_ALLOWED_TYPES(UINT64, uint64_t *a; unsigned long long *b; );
250 #define SYSCTL_ADD_ASSERT_TYPE(type, ptr) \
251 __sysctl_assert_ ## type (ptr)
252 #define SYSCTL_ASSERT_TYPE(type, ptr, parent, name) \
253 _SYSCTL_ASSERT_TYPE(type, ptr, __LINE__, parent##_##name)
255 #define SYSCTL_ADD_ASSERT_TYPE(type, ptr) ptr
256 #define SYSCTL_ASSERT_TYPE(type, ptr, parent, name)
258 #define _SYSCTL_ASSERT_TYPE(t, p, l, id) \
259 __SYSCTL_ASSERT_TYPE(t, p, l, id)
260 #define __SYSCTL_ASSERT_TYPE(type, ptr, line, id) \
262 sysctl_assert_##line##_##id(void) \
264 (void)__sysctl_assert_##type(ptr); \
268 #ifndef NO_SYSCTL_DESCR
271 #define __DESCR(d) ""
274 /* This constructs a "raw" MIB oid. */
275 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
276 static struct sysctl_oid sysctl__##parent##_##name = { \
277 &sysctl_##parent##_children, { NULL }, nbr, kind, \
278 a1, a2, #name, handler, fmt, 0, 0, __DESCR(descr) }; \
279 DATA_SET(sysctl_set, sysctl__##parent##_##name)
281 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
282 sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, __DESCR(descr))
284 /* This constructs a node from which other oids can hang. */
285 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
286 struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \
287 SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \
288 (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, "N", descr)
290 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
291 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
292 NULL, 0, handler, "N", __DESCR(descr))
294 /* Oid for a string. len can be 0 to indicate '\0' termination. */
295 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
296 SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
297 arg, len, sysctl_handle_string, "A", descr)
299 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
300 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
301 arg, len, sysctl_handle_string, "A", __DESCR(descr))
303 /* Oid for an int. If ptr is NULL, val is returned. */
304 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
305 SYSCTL_ASSERT_TYPE(INT, ptr, parent, name); \
306 SYSCTL_OID(parent, nbr, name, \
307 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
308 ptr, val, sysctl_handle_int, "I", descr)
310 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
311 sysctl_add_oid(ctx, parent, nbr, name, \
312 CTLTYPE_INT | CTLFLAG_MPSAFE | (access), \
313 SYSCTL_ADD_ASSERT_TYPE(INT, ptr), val, \
314 sysctl_handle_int, "I", __DESCR(descr))
316 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
317 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
318 SYSCTL_ASSERT_TYPE(UINT, ptr, parent, name); \
319 SYSCTL_OID(parent, nbr, name, \
320 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
321 ptr, val, sysctl_handle_int, "IU", descr)
323 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
324 sysctl_add_oid(ctx, parent, nbr, name, \
325 CTLTYPE_UINT | CTLFLAG_MPSAFE | (access), \
326 SYSCTL_ADD_ASSERT_TYPE(UINT, ptr), val, \
327 sysctl_handle_int, "IU", __DESCR(descr))
329 /* Oid for a long. The pointer must be non NULL. */
330 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
331 SYSCTL_ASSERT_TYPE(LONG, ptr, parent, name); \
332 SYSCTL_OID(parent, nbr, name, \
333 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
334 ptr, val, sysctl_handle_long, "L", descr)
336 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
337 sysctl_add_oid(ctx, parent, nbr, name, \
338 CTLTYPE_LONG | CTLFLAG_MPSAFE | (access), \
339 SYSCTL_ADD_ASSERT_TYPE(LONG, ptr), 0, \
340 sysctl_handle_long, "L", __DESCR(descr))
342 /* Oid for an unsigned long. The pointer must be non NULL. */
343 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
344 SYSCTL_ASSERT_TYPE(ULONG, ptr, parent, name); \
345 SYSCTL_OID(parent, nbr, name, \
346 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
347 ptr, val, sysctl_handle_long, "LU", descr)
349 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
350 sysctl_add_oid(ctx, parent, nbr, name, \
351 CTLTYPE_ULONG | CTLFLAG_MPSAFE | (access), \
352 SYSCTL_ADD_ASSERT_TYPE(ULONG, ptr), 0, \
353 sysctl_handle_long, "LU", __DESCR(descr))
355 /* Oid for a quad. The pointer must be non NULL. */
356 #define SYSCTL_QUAD(parent, nbr, name, access, ptr, val, descr) \
357 SYSCTL_ASSERT_TYPE(INT64, ptr, parent, name); \
358 SYSCTL_OID(parent, nbr, name, \
359 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
360 ptr, val, sysctl_handle_64, "Q", descr)
362 #define SYSCTL_ADD_QUAD(ctx, parent, nbr, name, access, ptr, descr) \
363 sysctl_add_oid(ctx, parent, nbr, name, \
364 CTLTYPE_S64 | CTLFLAG_MPSAFE | (access), \
365 SYSCTL_ADD_ASSERT_TYPE(INT64, ptr), 0, \
366 sysctl_handle_64, "Q", __DESCR(descr))
368 #define SYSCTL_UQUAD(parent, nbr, name, access, ptr, val, descr) \
369 SYSCTL_ASSERT_TYPE(UINT64, ptr, parent, name); \
370 SYSCTL_OID(parent, nbr, name, \
371 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
372 ptr, val, sysctl_handle_64, "QU", descr)
374 #define SYSCTL_ADD_UQUAD(ctx, parent, nbr, name, access, ptr, descr) \
375 sysctl_add_oid(ctx, parent, nbr, name, \
376 CTLTYPE_U64 | CTLFLAG_MPSAFE | (access), \
377 SYSCTL_ADD_ASSERT_TYPE(UINT64, ptr), 0, \
378 sysctl_handle_64, "QU", __DESCR(descr))
380 /* Oid for an opaque object. Specified by a pointer and a length. */
381 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
382 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
383 ptr, len, sysctl_handle_opaque, fmt, descr)
385 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
386 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
387 ptr, len, sysctl_handle_opaque, fmt, __DESCR(descr))
389 /* Oid for a struct. Specified by a pointer and a type. */
390 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
391 SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
392 ptr, sizeof(struct type), sysctl_handle_opaque, \
395 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
396 sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
397 ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, __DESCR(descr))
399 /* Oid for a procedure. Specified by a pointer and an arg. */
400 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
401 CTASSERT(((access) & CTLTYPE) != 0); \
402 SYSCTL_OID(parent, nbr, name, (access), \
403 ptr, arg, handler, fmt, descr)
405 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
406 sysctl_add_oid(ctx, parent, nbr, name, (access), \
407 ptr, arg, handler, fmt, __DESCR(descr))
410 * A macro to generate a read-only sysctl to indicate the presense of optional
413 #define FEATURE(name, desc) \
414 SYSCTL_INT(_kern_features, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \
420 * Top-level identifiers
422 #define CTL_UNSPEC 0 /* unused */
423 #define CTL_KERN 1 /* "high kernel": proc, limits */
424 #define CTL_VM 2 /* virtual memory */
425 #define CTL_VFS 3 /* filesystem, mount type is next */
426 #define CTL_NET 4 /* network, see socket.h */
427 #define CTL_DEBUG 5 /* debugging parameters */
428 #define CTL_HW 6 /* generic cpu/io */
429 #define CTL_MACHDEP 7 /* machine dependent */
430 #define CTL_USER 8 /* user-level */
431 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
432 #define CTL_MAXID 10 /* number of valid top-level ids */
434 #define CTL_NAMES { \
436 { "kern", CTLTYPE_NODE }, \
437 { "vm", CTLTYPE_NODE }, \
438 { "vfs", CTLTYPE_NODE }, \
439 { "net", CTLTYPE_NODE }, \
440 { "debug", CTLTYPE_NODE }, \
441 { "hw", CTLTYPE_NODE }, \
442 { "machdep", CTLTYPE_NODE }, \
443 { "user", CTLTYPE_NODE }, \
444 { "p1003_1b", CTLTYPE_NODE }, \
448 * CTL_KERN identifiers
450 #define KERN_OSTYPE 1 /* string: system version */
451 #define KERN_OSRELEASE 2 /* string: system release */
452 #define KERN_OSREV 3 /* int: system revision */
453 #define KERN_VERSION 4 /* string: compile time info */
454 #define KERN_MAXVNODES 5 /* int: max vnodes */
455 #define KERN_MAXPROC 6 /* int: max processes */
456 #define KERN_MAXFILES 7 /* int: max open files */
457 #define KERN_ARGMAX 8 /* int: max arguments to exec */
458 #define KERN_SECURELVL 9 /* int: system security level */
459 #define KERN_HOSTNAME 10 /* string: hostname */
460 #define KERN_HOSTID 11 /* int: host identifier */
461 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
462 #define KERN_VNODE 13 /* struct: vnode structures */
463 #define KERN_PROC 14 /* struct: process entries */
464 #define KERN_FILE 15 /* struct: file entries */
465 #define KERN_PROF 16 /* node: kernel profiling info */
466 #define KERN_POSIX1 17 /* int: POSIX.1 version */
467 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
468 #define KERN_JOB_CONTROL 19 /* int: is job control available */
469 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
470 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
471 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
472 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
473 #define KERN_OSRELDATE 24 /* int: kernel release date */
474 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
475 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
476 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
477 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
478 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
479 #define KERN_IPC 30 /* node: anything related to IPC */
480 #define KERN_DUMMY 31 /* unused */
481 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
482 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
483 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
484 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
485 #define KERN_HOSTUUID 36 /* string: host UUID identifier */
486 #define KERN_ARND 37 /* int: from arc4rand() */
487 #define KERN_MAXID 38 /* number of valid kern ids */
489 #define CTL_KERN_NAMES { \
491 { "ostype", CTLTYPE_STRING }, \
492 { "osrelease", CTLTYPE_STRING }, \
493 { "osrevision", CTLTYPE_INT }, \
494 { "version", CTLTYPE_STRING }, \
495 { "maxvnodes", CTLTYPE_INT }, \
496 { "maxproc", CTLTYPE_INT }, \
497 { "maxfiles", CTLTYPE_INT }, \
498 { "argmax", CTLTYPE_INT }, \
499 { "securelevel", CTLTYPE_INT }, \
500 { "hostname", CTLTYPE_STRING }, \
501 { "hostid", CTLTYPE_UINT }, \
502 { "clockrate", CTLTYPE_STRUCT }, \
503 { "vnode", CTLTYPE_STRUCT }, \
504 { "proc", CTLTYPE_STRUCT }, \
505 { "file", CTLTYPE_STRUCT }, \
506 { "profiling", CTLTYPE_NODE }, \
507 { "posix1version", CTLTYPE_INT }, \
508 { "ngroups", CTLTYPE_INT }, \
509 { "job_control", CTLTYPE_INT }, \
510 { "saved_ids", CTLTYPE_INT }, \
511 { "boottime", CTLTYPE_STRUCT }, \
512 { "nisdomainname", CTLTYPE_STRING }, \
513 { "update", CTLTYPE_INT }, \
514 { "osreldate", CTLTYPE_INT }, \
515 { "ntp_pll", CTLTYPE_NODE }, \
516 { "bootfile", CTLTYPE_STRING }, \
517 { "maxfilesperproc", CTLTYPE_INT }, \
518 { "maxprocperuid", CTLTYPE_INT }, \
519 { "ipc", CTLTYPE_NODE }, \
520 { "dummy", CTLTYPE_INT }, \
521 { "ps_strings", CTLTYPE_INT }, \
522 { "usrstack", CTLTYPE_INT }, \
523 { "logsigexit", CTLTYPE_INT }, \
524 { "iov_max", CTLTYPE_INT }, \
525 { "hostuuid", CTLTYPE_STRING }, \
526 { "arc4rand", CTLTYPE_OPAQUE }, \
530 * CTL_VFS identifiers
532 #define CTL_VFS_NAMES { \
533 { "vfsconf", CTLTYPE_STRUCT }, \
539 #define KERN_PROC_ALL 0 /* everything */
540 #define KERN_PROC_PID 1 /* by process id */
541 #define KERN_PROC_PGRP 2 /* by process group id */
542 #define KERN_PROC_SESSION 3 /* by session of pid */
543 #define KERN_PROC_TTY 4 /* by controlling tty */
544 #define KERN_PROC_UID 5 /* by effective uid */
545 #define KERN_PROC_RUID 6 /* by real uid */
546 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
547 #define KERN_PROC_PROC 8 /* only return procs */
548 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
549 #define KERN_PROC_RGID 10 /* by real group id */
550 #define KERN_PROC_GID 11 /* by effective group id */
551 #define KERN_PROC_PATHNAME 12 /* path to executable */
552 #define KERN_PROC_OVMMAP 13 /* Old VM map entries for process */
553 #define KERN_PROC_OFILEDESC 14 /* Old file descriptors for process */
554 #define KERN_PROC_KSTACK 15 /* Kernel stacks for process */
555 #define KERN_PROC_INC_THREAD 0x10 /*
556 * modifier for pid, pgrp, tty,
557 * uid, ruid, gid, rgid and proc
558 * This effectively uses 16-31
560 #define KERN_PROC_VMMAP 32 /* VM map entries for process */
561 #define KERN_PROC_FILEDESC 33 /* File descriptors for process */
562 #define KERN_PROC_GROUPS 34 /* process groups */
563 #define KERN_PROC_ENV 35 /* get environment */
564 #define KERN_PROC_AUXV 36 /* get ELF auxiliary vector */
565 #define KERN_PROC_RLIMIT 37 /* process resource limits */
566 #define KERN_PROC_PS_STRINGS 38 /* get ps_strings location */
567 #define KERN_PROC_UMASK 39 /* process umask */
568 #define KERN_PROC_OSREL 40 /* osreldate for process binary */
571 * KERN_IPC identifiers
573 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
574 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
575 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
576 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
577 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
578 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
579 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
584 #define HW_MACHINE 1 /* string: machine class */
585 #define HW_MODEL 2 /* string: specific machine model */
586 #define HW_NCPU 3 /* int: number of cpus */
587 #define HW_BYTEORDER 4 /* int: machine byte order */
588 #define HW_PHYSMEM 5 /* int: total memory */
589 #define HW_USERMEM 6 /* int: non-kernel memory */
590 #define HW_PAGESIZE 7 /* int: software page size */
591 #define HW_DISKNAMES 8 /* strings: disk drive names */
592 #define HW_DISKSTATS 9 /* struct: diskstats[] */
593 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
594 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
595 #define HW_REALMEM 12 /* int: 'real' memory */
596 #define HW_MAXID 13 /* number of valid hw ids */
598 #define CTL_HW_NAMES { \
600 { "machine", CTLTYPE_STRING }, \
601 { "model", CTLTYPE_STRING }, \
602 { "ncpu", CTLTYPE_INT }, \
603 { "byteorder", CTLTYPE_INT }, \
604 { "physmem", CTLTYPE_ULONG }, \
605 { "usermem", CTLTYPE_ULONG }, \
606 { "pagesize", CTLTYPE_INT }, \
607 { "disknames", CTLTYPE_STRUCT }, \
608 { "diskstats", CTLTYPE_STRUCT }, \
609 { "floatingpoint", CTLTYPE_INT }, \
610 { "machine_arch", CTLTYPE_STRING }, \
611 { "realmem", CTLTYPE_ULONG }, \
615 * CTL_USER definitions
617 #define USER_CS_PATH 1 /* string: _CS_PATH */
618 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
619 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
620 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
621 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
622 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
623 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
624 #define USER_LINE_MAX 8 /* int: LINE_MAX */
625 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
626 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
627 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
628 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
629 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
630 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
631 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
632 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
633 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
634 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
635 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
636 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
637 #define USER_MAXID 21 /* number of valid user ids */
639 #define CTL_USER_NAMES { \
641 { "cs_path", CTLTYPE_STRING }, \
642 { "bc_base_max", CTLTYPE_INT }, \
643 { "bc_dim_max", CTLTYPE_INT }, \
644 { "bc_scale_max", CTLTYPE_INT }, \
645 { "bc_string_max", CTLTYPE_INT }, \
646 { "coll_weights_max", CTLTYPE_INT }, \
647 { "expr_nest_max", CTLTYPE_INT }, \
648 { "line_max", CTLTYPE_INT }, \
649 { "re_dup_max", CTLTYPE_INT }, \
650 { "posix2_version", CTLTYPE_INT }, \
651 { "posix2_c_bind", CTLTYPE_INT }, \
652 { "posix2_c_dev", CTLTYPE_INT }, \
653 { "posix2_char_term", CTLTYPE_INT }, \
654 { "posix2_fort_dev", CTLTYPE_INT }, \
655 { "posix2_fort_run", CTLTYPE_INT }, \
656 { "posix2_localedef", CTLTYPE_INT }, \
657 { "posix2_sw_dev", CTLTYPE_INT }, \
658 { "posix2_upe", CTLTYPE_INT }, \
659 { "stream_max", CTLTYPE_INT }, \
660 { "tzname_max", CTLTYPE_INT }, \
663 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
664 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
665 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
666 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
667 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
668 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
669 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
670 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
671 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
672 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
673 #define CTL_P1003_1B_FSYNC 11 /* boolean */
674 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
675 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
676 #define CTL_P1003_1B_TIMERS 14 /* boolean */
677 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
678 #define CTL_P1003_1B_AIO_MAX 16 /* int */
679 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
680 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
681 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
682 #define CTL_P1003_1B_PAGESIZE 20 /* int */
683 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
684 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
685 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
686 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
687 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
689 #define CTL_P1003_1B_MAXID 26
691 #define CTL_P1003_1B_NAMES { \
693 { "asynchronous_io", CTLTYPE_INT }, \
694 { "mapped_files", CTLTYPE_INT }, \
695 { "memlock", CTLTYPE_INT }, \
696 { "memlock_range", CTLTYPE_INT }, \
697 { "memory_protection", CTLTYPE_INT }, \
698 { "message_passing", CTLTYPE_INT }, \
699 { "prioritized_io", CTLTYPE_INT }, \
700 { "priority_scheduling", CTLTYPE_INT }, \
701 { "realtime_signals", CTLTYPE_INT }, \
702 { "semaphores", CTLTYPE_INT }, \
703 { "fsync", CTLTYPE_INT }, \
704 { "shared_memory_objects", CTLTYPE_INT }, \
705 { "synchronized_io", CTLTYPE_INT }, \
706 { "timers", CTLTYPE_INT }, \
707 { "aio_listio_max", CTLTYPE_INT }, \
708 { "aio_max", CTLTYPE_INT }, \
709 { "aio_prio_delta_max", CTLTYPE_INT }, \
710 { "delaytimer_max", CTLTYPE_INT }, \
711 { "mq_open_max", CTLTYPE_INT }, \
712 { "pagesize", CTLTYPE_INT }, \
713 { "rtsig_max", CTLTYPE_INT }, \
714 { "nsems_max", CTLTYPE_INT }, \
715 { "sem_value_max", CTLTYPE_INT }, \
716 { "sigqueue_max", CTLTYPE_INT }, \
717 { "timer_max", CTLTYPE_INT }, \
723 * Declare some common oids.
725 extern struct sysctl_oid_list sysctl__children;
727 SYSCTL_DECL(_kern_features);
728 SYSCTL_DECL(_kern_ipc);
729 SYSCTL_DECL(_kern_proc);
730 SYSCTL_DECL(_kern_sched);
731 SYSCTL_DECL(_kern_sched_stats);
732 SYSCTL_DECL(_sysctl);
734 SYSCTL_DECL(_vm_stats);
735 SYSCTL_DECL(_vm_stats_misc);
739 SYSCTL_DECL(_debug_sizeof);
742 SYSCTL_DECL(_hw_bus);
743 SYSCTL_DECL(_hw_bus_devices);
744 SYSCTL_DECL(_hw_bus_info);
745 SYSCTL_DECL(_machdep);
747 SYSCTL_DECL(_compat);
748 SYSCTL_DECL(_regression);
749 SYSCTL_DECL(_security);
750 SYSCTL_DECL(_security_bsd);
752 extern char machine[];
753 extern char osrelease[];
754 extern char ostype[];
755 extern char kern_ident[];
757 /* Dynamic oid handling */
758 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
759 struct sysctl_oid_list *parent, int nbr, const char *name,
760 int kind, void *arg1, intptr_t arg2,
761 int (*handler) (SYSCTL_HANDLER_ARGS),
762 const char *fmt, const char *descr);
763 int sysctl_remove_name(struct sysctl_oid *parent, const char *name, int del,
765 void sysctl_rename_oid(struct sysctl_oid *oidp, const char *name);
766 int sysctl_move_oid(struct sysctl_oid *oidp,
767 struct sysctl_oid_list *parent);
768 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
769 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
770 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
771 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
772 struct sysctl_oid *oidp);
773 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
774 struct sysctl_oid *oidp);
775 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
776 struct sysctl_oid *oidp);
778 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
779 size_t *oldlenp, void *new, size_t newlen,
780 size_t *retval, int flags);
781 int kernel_sysctlbyname(struct thread *td, char *name,
782 void *old, size_t *oldlenp, void *new, size_t newlen,
783 size_t *retval, int flags);
784 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
785 size_t *oldlenp, int inkernel, void *new, size_t newlen,
786 size_t *retval, int flags);
787 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
788 int *nindx, struct sysctl_req *req);
789 void sysctl_lock(void);
790 void sysctl_unlock(void);
791 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
794 struct sbuf *sbuf_new_for_sysctl(struct sbuf *, char *, int,
795 struct sysctl_req *);
797 #include <sys/cdefs.h>
800 int sysctl(const int *, u_int, void *, size_t *, const void *, size_t);
801 int sysctlbyname(const char *, void *, size_t *, const void *, size_t);
802 int sysctlnametomib(const char *, int *, size_t *);
806 #endif /* !_SYS_SYSCTL_H_ */