RTEMS CPU Kit with SuperCore  4.11.3
sysctl.h
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1 /*
2  * Copyright (c) 1989, 1993
3  * The Regents of the University of California. All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Mike Karels at Berkeley Software Design, Inc.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 4. Neither the name of the University nor the names of its contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * @(#)sysctl.h 8.1 (Berkeley) 6/2/93
33  * $FreeBSD: src/sys/sys/sysctl.h,v 1.133 2004/10/11 22:04:16 peter Exp $
34  */
35 
36 #ifndef _SYS_SYSCTL_H_
37 #define _SYS_SYSCTL_H_
38 
39 #include <stdint.h>
40 #include <sys/queue.h>
41 
42 struct thread;
43 /*
44  * Definitions for sysctl call. The sysctl call uses a hierarchical name
45  * for objects that can be examined or modified. The name is expressed as
46  * a sequence of integers. Like a file path name, the meaning of each
47  * component depends on its place in the hierarchy. The top-level and kern
48  * identifiers are defined here, and other identifiers are defined in the
49  * respective subsystem header files.
50  */
51 
52 #define CTL_MAXNAME 24 /* largest number of components supported */
53 
54 /*
55  * Each subsystem defined by sysctl defines a list of variables
56  * for that subsystem. Each name is either a node with further
57  * levels defined below it, or it is a leaf of some particular
58  * type given below. Each sysctl level defines a set of name/type
59  * pairs to be used by sysctl(8) in manipulating the subsystem.
60  */
61 struct ctlname {
62  char *ctl_name; /* subsystem name */
63  int ctl_type; /* type of name */
64 };
65 
66 #define CTLTYPE 0xf /* Mask for the type */
67 #define CTLTYPE_NODE 1 /* name is a node */
68 #define CTLTYPE_INT 2 /* name describes an integer */
69 #define CTLTYPE_STRING 3 /* name describes a string */
70 #define CTLTYPE_QUAD 4 /* name describes a 64-bit number */
71 #define CTLTYPE_OPAQUE 5 /* name describes a structure */
72 #define CTLTYPE_STRUCT CTLTYPE_OPAQUE /* name describes a structure */
73 #define CTLTYPE_UINT 6 /* name describes an unsigned integer */
74 #define CTLTYPE_LONG 7 /* name describes a long */
75 #define CTLTYPE_ULONG 8 /* name describes an unsigned long */
76 
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_NOLOCK 0x20000000 /* XXX Don't Lock */
81 #define CTLFLAG_ANYBODY 0x10000000 /* All users can set this var */
82 #define CTLFLAG_SECURE 0x08000000 /* Permit set only if securelevel<=0 */
83 #define CTLFLAG_PRISON 0x04000000 /* Prisoned roots can fiddle */
84 #define CTLFLAG_DYN 0x02000000 /* Dynamic oid - can be freed */
85 #define CTLFLAG_SKIP 0x01000000 /* Skip this sysctl when listing */
86 #define CTLMASK_SECURE 0x00F00000 /* Secure level */
87 #define CTLFLAG_TUN 0x00080000 /* Tunable variable */
88 #define CTLFLAG_RDTUN (CTLFLAG_RD|CTLFLAG_TUN)
89 
90 /*
91  * Secure level. Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.
92  *
93  * Secure when the securelevel is raised to at least N.
94  */
95 #define CTLSHIFT_SECURE 20
96 #define CTLFLAG_SECURE1 (CTLFLAG_SECURE | (0 << CTLSHIFT_SECURE))
97 #define CTLFLAG_SECURE2 (CTLFLAG_SECURE | (1 << CTLSHIFT_SECURE))
98 #define CTLFLAG_SECURE3 (CTLFLAG_SECURE | (2 << CTLSHIFT_SECURE))
99 
100 /*
101  * USE THIS instead of a hardwired number from the categories below
102  * to get dynamically assigned sysctl entries using the linker-set
103  * technology. This is the way nearly all new sysctl variables should
104  * be implemented.
105  * e.g. SYSCTL_INT(_parent, OID_AUTO, name, CTLFLAG_RW, &variable, 0, "");
106  */
107 #define OID_AUTO (-1)
108 
109 /*
110  * The starting number for dynamically-assigned entries. WARNING!
111  * ALL static sysctl entries should have numbers LESS than this!
112  */
113 #define CTL_AUTO_START 0x100
114 
115 #ifdef _KERNEL
116 #define SYSCTL_HANDLER_ARGS struct sysctl_oid *oidp, void *arg1, int arg2, \
117  struct sysctl_req *req
118 
119 /* definitions for sysctl_req 'lock' member */
120 #define REQ_UNLOCKED 0 /* not locked and not wired */
121 #define REQ_LOCKED 1 /* locked and not wired */
122 #define REQ_WIRED 2 /* locked and wired */
123 
124 /*
125  * This describes the access space for a sysctl request. This is needed
126  * so that we can use the interface from the kernel or from user-space.
127  */
128 struct sysctl_req {
129  struct thread *td; /* used for access checking */
130  int lock; /* locking/wiring state */
131  void *oldptr;
132  size_t oldlen;
133  size_t oldidx;
134  int (*oldfunc)(struct sysctl_req *, const void *, size_t);
135  void *newptr;
136  size_t newlen;
137  size_t newidx;
138  int (*newfunc)(struct sysctl_req *, void *, size_t);
139  size_t validlen;
140 };
141 
142 SLIST_HEAD(sysctl_oid_list, sysctl_oid);
143 
144 /*
145  * This describes one "oid" in the MIB tree. Potentially more nodes can
146  * be hidden behind it, expanded by the handler.
147  */
148 struct sysctl_oid {
149  struct sysctl_oid_list *oid_parent;
150  SLIST_ENTRY(sysctl_oid) oid_link;
151  int oid_number;
152  uint32_t oid_kind;
153  void *oid_arg1;
154  int32_t oid_arg2;
155  const char *oid_name;
156  int (*oid_handler)(SYSCTL_HANDLER_ARGS);
157  const char *oid_fmt;
158  int oid_refcnt;
159  const char *descr;
160 };
161 
162 #define SYSCTL_IN(r, p, l) (r->newfunc)(r, p, l)
163 #define SYSCTL_OUT(r, p, l) (r->oldfunc)(r, p, l)
164 
165 int sysctl_handle_int(SYSCTL_HANDLER_ARGS);
166 int sysctl_handle_long(SYSCTL_HANDLER_ARGS);
167 int sysctl_handle_intptr(SYSCTL_HANDLER_ARGS);
168 int sysctl_handle_string(SYSCTL_HANDLER_ARGS);
169 int sysctl_handle_opaque(SYSCTL_HANDLER_ARGS);
170 
171 /*
172  * These functions are used to add/remove an oid from the mib.
173  */
174 void sysctl_register_oid(struct sysctl_oid *oidp);
175 void sysctl_unregister_oid(struct sysctl_oid *oidp);
176 
177 /* Declare a static oid to allow child oids to be added to it. */
178 #define SYSCTL_DECL(name) \
179  extern struct sysctl_oid_list sysctl_##name##_children
180 
181 /* Hide these in macros */
182 #define SYSCTL_CHILDREN(oid_ptr) (struct sysctl_oid_list *) \
183  (oid_ptr)->oid_arg1
184 #define SYSCTL_CHILDREN_SET(oid_ptr, val) \
185  (oid_ptr)->oid_arg1 = (val);
186 #define SYSCTL_STATIC_CHILDREN(oid_name) \
187  (&sysctl_##oid_name##_children)
188 
189 /* === Structs and macros related to context handling === */
190 
191 /* All dynamically created sysctls can be tracked in a context list. */
192 struct sysctl_ctx_entry {
193  struct sysctl_oid *entry;
194  TAILQ_ENTRY(sysctl_ctx_entry) link;
195 };
196 
197 TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
198 
199 #define SYSCTL_NODE_CHILDREN(parent, name) \
200  sysctl_##parent##_##name##_children
201 
202 /* This constructs a "raw" MIB oid. */
203 #define SYSCTL_OID(parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
204  static struct sysctl_oid sysctl__##parent##_##name = { \
205  &sysctl_##parent##_children, { 0 }, \
206  nbr, kind, a1, a2, #name, handler, fmt, 0, descr }; \
207  DATA_SET(sysctl_set, sysctl__##parent##_##name)
208 
209 #define SYSCTL_ADD_OID(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr) \
210  sysctl_add_oid(ctx, parent, nbr, name, kind, a1, a2, handler, fmt, descr)
211 
212 /* This constructs a node from which other oids can hang. */
213 #define SYSCTL_NODE(parent, nbr, name, access, handler, descr) \
214  struct sysctl_oid_list SYSCTL_NODE_CHILDREN(parent, name); \
215  SYSCTL_OID(parent, nbr, name, CTLTYPE_NODE|(access), \
216  (void*)&SYSCTL_NODE_CHILDREN(parent, name), 0, handler, \
217  "N", descr)
218 
219 #define SYSCTL_ADD_NODE(ctx, parent, nbr, name, access, handler, descr) \
220  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_NODE|(access), \
221  0, 0, handler, "N", descr)
222 
223 /* Oid for a string. len can be 0 to indicate '\0' termination. */
224 #define SYSCTL_STRING(parent, nbr, name, access, arg, len, descr) \
225  SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \
226  arg, len, sysctl_handle_string, "A", descr)
227 
228 #define SYSCTL_ADD_STRING(ctx, parent, nbr, name, access, arg, len, descr) \
229  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \
230  arg, len, sysctl_handle_string, "A", descr)
231 
232 /* Oid for an int. If ptr is NULL, val is returned. */
233 #define SYSCTL_INT(parent, nbr, name, access, ptr, val, descr) \
234  SYSCTL_OID(parent, nbr, name, CTLTYPE_INT|(access), \
235  ptr, val, sysctl_handle_int, "I", descr)
236 
237 #define SYSCTL_ADD_INT(ctx, parent, nbr, name, access, ptr, val, descr) \
238  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_INT|(access), \
239  ptr, val, sysctl_handle_int, "I", descr)
240 
241 /* Oid for an unsigned int. If ptr is NULL, val is returned. */
242 #define SYSCTL_UINT(parent, nbr, name, access, ptr, val, descr) \
243  SYSCTL_OID(parent, nbr, name, CTLTYPE_UINT|(access), \
244  ptr, val, sysctl_handle_int, "IU", descr)
245 
246 #define SYSCTL_ADD_UINT(ctx, parent, nbr, name, access, ptr, val, descr) \
247  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_UINT|(access), \
248  ptr, val, sysctl_handle_int, "IU", descr)
249 
250 /* Oid for a long. The pointer must be non NULL. */
251 #define SYSCTL_LONG(parent, nbr, name, access, ptr, val, descr) \
252  SYSCTL_OID(parent, nbr, name, CTLTYPE_LONG|(access), \
253  ptr, val, sysctl_handle_long, "L", descr)
254 
255 #define SYSCTL_ADD_LONG(ctx, parent, nbr, name, access, ptr, descr) \
256  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_LONG|(access), \
257  ptr, 0, sysctl_handle_long, "L", descr)
258 
259 /* Oid for an unsigned long. The pointer must be non NULL. */
260 #define SYSCTL_ULONG(parent, nbr, name, access, ptr, val, descr) \
261  SYSCTL_OID(parent, nbr, name, CTLTYPE_ULONG|(access), \
262  ptr, val, sysctl_handle_long, "LU", descr)
263 
264 #define SYSCTL_ADD_ULONG(ctx, parent, nbr, name, access, ptr, descr) \
265  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_ULONG|(access), \
266  ptr, 0, sysctl_handle_long, "LU", descr)
267 
268 /* Oid for an opaque object. Specified by a pointer and a length. */
269 #define SYSCTL_OPAQUE(parent, nbr, name, access, ptr, len, fmt, descr) \
270  SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
271  ptr, len, sysctl_handle_opaque, fmt, descr)
272 
273 #define SYSCTL_ADD_OPAQUE(ctx, parent, nbr, name, access, ptr, len, fmt, descr)\
274  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
275  ptr, len, sysctl_handle_opaque, fmt, descr)
276 
277 /* Oid for a struct. Specified by a pointer and a type. */
278 #define SYSCTL_STRUCT(parent, nbr, name, access, ptr, type, descr) \
279  SYSCTL_OID(parent, nbr, name, CTLTYPE_OPAQUE|(access), \
280  ptr, sizeof(struct type), sysctl_handle_opaque, \
281  "S," #type, descr)
282 
283 #define SYSCTL_ADD_STRUCT(ctx, parent, nbr, name, access, ptr, type, descr) \
284  sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_OPAQUE|(access), \
285  ptr, sizeof(struct type), sysctl_handle_opaque, "S," #type, descr)
286 
287 /* Oid for a procedure. Specified by a pointer and an arg. */
288 #define SYSCTL_PROC(parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
289  SYSCTL_OID(parent, nbr, name, (access), \
290  ptr, arg, handler, fmt, descr)
291 
292 #define SYSCTL_ADD_PROC(ctx, parent, nbr, name, access, ptr, arg, handler, fmt, descr) \
293  sysctl_add_oid(ctx, parent, nbr, name, (access), \
294  ptr, arg, handler, fmt, descr)
295 
296 #endif /* _KERNEL */
297 
298 /*
299  * Top-level identifiers
300  */
301 #define CTL_UNSPEC 0 /* unused */
302 #define CTL_KERN 1 /* "high kernel": proc, limits */
303 #define CTL_VM 2 /* virtual memory */
304 #define CTL_VFS 3 /* filesystem, mount type is next */
305 #define CTL_NET 4 /* network, see socket.h */
306 #define CTL_DEBUG 5 /* debugging parameters */
307 #define CTL_HW 6 /* generic cpu/io */
308 #define CTL_MACHDEP 7 /* machine dependent */
309 #define CTL_USER 8 /* user-level */
310 #define CTL_P1003_1B 9 /* POSIX 1003.1B */
311 #define CTL_MAXID 10 /* number of valid top-level ids */
312 
313 #define CTL_NAMES { \
314  { 0, 0 }, \
315  { "kern", CTLTYPE_NODE }, \
316  { "vm", CTLTYPE_NODE }, \
317  { "vfs", CTLTYPE_NODE }, \
318  { "net", CTLTYPE_NODE }, \
319  { "debug", CTLTYPE_NODE }, \
320  { "hw", CTLTYPE_NODE }, \
321  { "machdep", CTLTYPE_NODE }, \
322  { "user", CTLTYPE_NODE }, \
323  { "p1003_1b", CTLTYPE_NODE }, \
324 }
325 
326 /*
327  * CTL_KERN identifiers
328  */
329 #define KERN_OSTYPE 1 /* string: system version */
330 #define KERN_OSRELEASE 2 /* string: system release */
331 #define KERN_OSREV 3 /* int: system revision */
332 #define KERN_VERSION 4 /* string: compile time info */
333 #define KERN_MAXVNODES 5 /* int: max vnodes */
334 #define KERN_MAXPROC 6 /* int: max processes */
335 #define KERN_MAXFILES 7 /* int: max open files */
336 #define KERN_ARGMAX 8 /* int: max arguments to exec */
337 #define KERN_SECURELVL 9 /* int: system security level */
338 #define KERN_HOSTNAME 10 /* string: hostname */
339 #define KERN_HOSTID 11 /* int: host identifier */
340 #define KERN_CLOCKRATE 12 /* struct: struct clockrate */
341 #define KERN_VNODE 13 /* struct: vnode structures */
342 #define KERN_PROC 14 /* struct: process entries */
343 #define KERN_FILE 15 /* struct: file entries */
344 #define KERN_PROF 16 /* node: kernel profiling info */
345 #define KERN_POSIX1 17 /* int: POSIX.1 version */
346 #define KERN_NGROUPS 18 /* int: # of supplemental group ids */
347 #define KERN_JOB_CONTROL 19 /* int: is job control available */
348 #define KERN_SAVED_IDS 20 /* int: saved set-user/group-ID */
349 #define KERN_BOOTTIME 21 /* struct: time kernel was booted */
350 #define KERN_NISDOMAINNAME 22 /* string: YP domain name */
351 #define KERN_UPDATEINTERVAL 23 /* int: update process sleep time */
352 #define KERN_OSRELDATE 24 /* int: kernel release date */
353 #define KERN_NTP_PLL 25 /* node: NTP PLL control */
354 #define KERN_BOOTFILE 26 /* string: name of booted kernel */
355 #define KERN_MAXFILESPERPROC 27 /* int: max open files per proc */
356 #define KERN_MAXPROCPERUID 28 /* int: max processes per uid */
357 #define KERN_DUMPDEV 29 /* struct cdev *: device to dump on */
358 #define KERN_IPC 30 /* node: anything related to IPC */
359 #define KERN_DUMMY 31 /* unused */
360 #define KERN_PS_STRINGS 32 /* int: address of PS_STRINGS */
361 #define KERN_USRSTACK 33 /* int: address of USRSTACK */
362 #define KERN_LOGSIGEXIT 34 /* int: do we log sigexit procs? */
363 #define KERN_IOV_MAX 35 /* int: value of UIO_MAXIOV */
364 #define KERN_MAXID 36 /* number of valid kern ids */
365 
366 #define CTL_KERN_NAMES { \
367  { 0, 0 }, \
368  { "ostype", CTLTYPE_STRING }, \
369  { "osrelease", CTLTYPE_STRING }, \
370  { "osrevision", CTLTYPE_INT }, \
371  { "version", CTLTYPE_STRING }, \
372  { "maxvnodes", CTLTYPE_INT }, \
373  { "maxproc", CTLTYPE_INT }, \
374  { "maxfiles", CTLTYPE_INT }, \
375  { "argmax", CTLTYPE_INT }, \
376  { "securelevel", CTLTYPE_INT }, \
377  { "hostname", CTLTYPE_STRING }, \
378  { "hostid", CTLTYPE_UINT }, \
379  { "clockrate", CTLTYPE_STRUCT }, \
380  { "vnode", CTLTYPE_STRUCT }, \
381  { "proc", CTLTYPE_STRUCT }, \
382  { "file", CTLTYPE_STRUCT }, \
383  { "profiling", CTLTYPE_NODE }, \
384  { "posix1version", CTLTYPE_INT }, \
385  { "ngroups", CTLTYPE_INT }, \
386  { "job_control", CTLTYPE_INT }, \
387  { "saved_ids", CTLTYPE_INT }, \
388  { "boottime", CTLTYPE_STRUCT }, \
389  { "nisdomainname", CTLTYPE_STRING }, \
390  { "update", CTLTYPE_INT }, \
391  { "osreldate", CTLTYPE_INT }, \
392  { "ntp_pll", CTLTYPE_NODE }, \
393  { "bootfile", CTLTYPE_STRING }, \
394  { "maxfilesperproc", CTLTYPE_INT }, \
395  { "maxprocperuid", CTLTYPE_INT }, \
396  { "ipc", CTLTYPE_NODE }, \
397  { "dummy", CTLTYPE_INT }, \
398  { "ps_strings", CTLTYPE_INT }, \
399  { "usrstack", CTLTYPE_INT }, \
400  { "logsigexit", CTLTYPE_INT }, \
401  { "iov_max", CTLTYPE_INT }, \
402 }
403 
404 /*
405  * CTL_VFS identifiers
406  */
407 #define CTL_VFS_NAMES { \
408  { "vfsconf", CTLTYPE_STRUCT }, \
409 }
410 
411 /*
412  * KERN_PROC subtypes
413  */
414 #define KERN_PROC_ALL 0 /* everything */
415 #define KERN_PROC_PID 1 /* by process id */
416 #define KERN_PROC_PGRP 2 /* by process group id */
417 #define KERN_PROC_SESSION 3 /* by session of pid */
418 #define KERN_PROC_TTY 4 /* by controlling tty */
419 #define KERN_PROC_UID 5 /* by effective uid */
420 #define KERN_PROC_RUID 6 /* by real uid */
421 #define KERN_PROC_ARGS 7 /* get/set arguments/proctitle */
422 #define KERN_PROC_PROC 8 /* only return procs */
423 #define KERN_PROC_SV_NAME 9 /* get syscall vector name */
424 #define KERN_PROC_RGID 10 /* by real group id */
425 #define KERN_PROC_GID 11 /* by effective group id */
426 #define KERN_PROC_INC_THREAD 0x10 /*
427  * modifier for pid, pgrp, tty,
428  * uid, ruid, gid, rgid and proc
429  */
430 
431 /*
432  * KERN_IPC identifiers
433  */
434 #define KIPC_MAXSOCKBUF 1 /* int: max size of a socket buffer */
435 #define KIPC_SOCKBUF_WASTE 2 /* int: wastage factor in sockbuf */
436 #define KIPC_SOMAXCONN 3 /* int: max length of connection q */
437 #define KIPC_MAX_LINKHDR 4 /* int: max length of link header */
438 #define KIPC_MAX_PROTOHDR 5 /* int: max length of network header */
439 #define KIPC_MAX_HDR 6 /* int: max total length of headers */
440 #define KIPC_MAX_DATALEN 7 /* int: max length of data? */
441 
442 /*
443  * CTL_HW identifiers
444  */
445 #define HW_MACHINE 1 /* string: machine class */
446 #define HW_MODEL 2 /* string: specific machine model */
447 #define HW_NCPU 3 /* int: number of cpus */
448 #define HW_BYTEORDER 4 /* int: machine byte order */
449 #define HW_PHYSMEM 5 /* int: total memory */
450 #define HW_USERMEM 6 /* int: non-kernel memory */
451 #define HW_PAGESIZE 7 /* int: software page size */
452 #define HW_DISKNAMES 8 /* strings: disk drive names */
453 #define HW_DISKSTATS 9 /* struct: diskstats[] */
454 #define HW_FLOATINGPT 10 /* int: has HW floating point? */
455 #define HW_MACHINE_ARCH 11 /* string: machine architecture */
456 #define HW_MAXID 12 /* number of valid hw ids */
457 
458 #define CTL_HW_NAMES { \
459  { 0, 0 }, \
460  { "machine", CTLTYPE_STRING }, \
461  { "model", CTLTYPE_STRING }, \
462  { "ncpu", CTLTYPE_INT }, \
463  { "byteorder", CTLTYPE_INT }, \
464  { "physmem", CTLTYPE_ULONG }, \
465  { "usermem", CTLTYPE_ULONG }, \
466  { "pagesize", CTLTYPE_INT }, \
467  { "disknames", CTLTYPE_STRUCT }, \
468  { "diskstats", CTLTYPE_STRUCT }, \
469  { "floatingpoint", CTLTYPE_INT }, \
470 }
471 
472 /*
473  * CTL_USER definitions
474  */
475 #define USER_CS_PATH 1 /* string: _CS_PATH */
476 #define USER_BC_BASE_MAX 2 /* int: BC_BASE_MAX */
477 #define USER_BC_DIM_MAX 3 /* int: BC_DIM_MAX */
478 #define USER_BC_SCALE_MAX 4 /* int: BC_SCALE_MAX */
479 #define USER_BC_STRING_MAX 5 /* int: BC_STRING_MAX */
480 #define USER_COLL_WEIGHTS_MAX 6 /* int: COLL_WEIGHTS_MAX */
481 #define USER_EXPR_NEST_MAX 7 /* int: EXPR_NEST_MAX */
482 #define USER_LINE_MAX 8 /* int: LINE_MAX */
483 #define USER_RE_DUP_MAX 9 /* int: RE_DUP_MAX */
484 #define USER_POSIX2_VERSION 10 /* int: POSIX2_VERSION */
485 #define USER_POSIX2_C_BIND 11 /* int: POSIX2_C_BIND */
486 #define USER_POSIX2_C_DEV 12 /* int: POSIX2_C_DEV */
487 #define USER_POSIX2_CHAR_TERM 13 /* int: POSIX2_CHAR_TERM */
488 #define USER_POSIX2_FORT_DEV 14 /* int: POSIX2_FORT_DEV */
489 #define USER_POSIX2_FORT_RUN 15 /* int: POSIX2_FORT_RUN */
490 #define USER_POSIX2_LOCALEDEF 16 /* int: POSIX2_LOCALEDEF */
491 #define USER_POSIX2_SW_DEV 17 /* int: POSIX2_SW_DEV */
492 #define USER_POSIX2_UPE 18 /* int: POSIX2_UPE */
493 #define USER_STREAM_MAX 19 /* int: POSIX2_STREAM_MAX */
494 #define USER_TZNAME_MAX 20 /* int: POSIX2_TZNAME_MAX */
495 #define USER_MAXID 21 /* number of valid user ids */
496 
497 #define CTL_USER_NAMES { \
498  { 0, 0 }, \
499  { "cs_path", CTLTYPE_STRING }, \
500  { "bc_base_max", CTLTYPE_INT }, \
501  { "bc_dim_max", CTLTYPE_INT }, \
502  { "bc_scale_max", CTLTYPE_INT }, \
503  { "bc_string_max", CTLTYPE_INT }, \
504  { "coll_weights_max", CTLTYPE_INT }, \
505  { "expr_nest_max", CTLTYPE_INT }, \
506  { "line_max", CTLTYPE_INT }, \
507  { "re_dup_max", CTLTYPE_INT }, \
508  { "posix2_version", CTLTYPE_INT }, \
509  { "posix2_c_bind", CTLTYPE_INT }, \
510  { "posix2_c_dev", CTLTYPE_INT }, \
511  { "posix2_char_term", CTLTYPE_INT }, \
512  { "posix2_fort_dev", CTLTYPE_INT }, \
513  { "posix2_fort_run", CTLTYPE_INT }, \
514  { "posix2_localedef", CTLTYPE_INT }, \
515  { "posix2_sw_dev", CTLTYPE_INT }, \
516  { "posix2_upe", CTLTYPE_INT }, \
517  { "stream_max", CTLTYPE_INT }, \
518  { "tzname_max", CTLTYPE_INT }, \
519 }
520 
521 #define CTL_P1003_1B_ASYNCHRONOUS_IO 1 /* boolean */
522 #define CTL_P1003_1B_MAPPED_FILES 2 /* boolean */
523 #define CTL_P1003_1B_MEMLOCK 3 /* boolean */
524 #define CTL_P1003_1B_MEMLOCK_RANGE 4 /* boolean */
525 #define CTL_P1003_1B_MEMORY_PROTECTION 5 /* boolean */
526 #define CTL_P1003_1B_MESSAGE_PASSING 6 /* boolean */
527 #define CTL_P1003_1B_PRIORITIZED_IO 7 /* boolean */
528 #define CTL_P1003_1B_PRIORITY_SCHEDULING 8 /* boolean */
529 #define CTL_P1003_1B_REALTIME_SIGNALS 9 /* boolean */
530 #define CTL_P1003_1B_SEMAPHORES 10 /* boolean */
531 #define CTL_P1003_1B_FSYNC 11 /* boolean */
532 #define CTL_P1003_1B_SHARED_MEMORY_OBJECTS 12 /* boolean */
533 #define CTL_P1003_1B_SYNCHRONIZED_IO 13 /* boolean */
534 #define CTL_P1003_1B_TIMERS 14 /* boolean */
535 #define CTL_P1003_1B_AIO_LISTIO_MAX 15 /* int */
536 #define CTL_P1003_1B_AIO_MAX 16 /* int */
537 #define CTL_P1003_1B_AIO_PRIO_DELTA_MAX 17 /* int */
538 #define CTL_P1003_1B_DELAYTIMER_MAX 18 /* int */
539 #define CTL_P1003_1B_MQ_OPEN_MAX 19 /* int */
540 #define CTL_P1003_1B_PAGESIZE 20 /* int */
541 #define CTL_P1003_1B_RTSIG_MAX 21 /* int */
542 #define CTL_P1003_1B_SEM_NSEMS_MAX 22 /* int */
543 #define CTL_P1003_1B_SEM_VALUE_MAX 23 /* int */
544 #define CTL_P1003_1B_SIGQUEUE_MAX 24 /* int */
545 #define CTL_P1003_1B_TIMER_MAX 25 /* int */
546 
547 #define CTL_P1003_1B_MAXID 26
548 
549 #define CTL_P1003_1B_NAMES { \
550  { 0, 0 }, \
551  { "asynchronous_io", CTLTYPE_INT }, \
552  { "mapped_files", CTLTYPE_INT }, \
553  { "memlock", CTLTYPE_INT }, \
554  { "memlock_range", CTLTYPE_INT }, \
555  { "memory_protection", CTLTYPE_INT }, \
556  { "message_passing", CTLTYPE_INT }, \
557  { "prioritized_io", CTLTYPE_INT }, \
558  { "priority_scheduling", CTLTYPE_INT }, \
559  { "realtime_signals", CTLTYPE_INT }, \
560  { "semaphores", CTLTYPE_INT }, \
561  { "fsync", CTLTYPE_INT }, \
562  { "shared_memory_objects", CTLTYPE_INT }, \
563  { "synchronized_io", CTLTYPE_INT }, \
564  { "timers", CTLTYPE_INT }, \
565  { "aio_listio_max", CTLTYPE_INT }, \
566  { "aio_max", CTLTYPE_INT }, \
567  { "aio_prio_delta_max", CTLTYPE_INT }, \
568  { "delaytimer_max", CTLTYPE_INT }, \
569  { "mq_open_max", CTLTYPE_INT }, \
570  { "pagesize", CTLTYPE_INT }, \
571  { "rtsig_max", CTLTYPE_INT }, \
572  { "nsems_max", CTLTYPE_INT }, \
573  { "sem_value_max", CTLTYPE_INT }, \
574  { "sigqueue_max", CTLTYPE_INT }, \
575  { "timer_max", CTLTYPE_INT }, \
576 }
577 
578 #ifdef _KERNEL
579 
580 /*
581  * Declare some common oids.
582  */
583 extern struct sysctl_oid_list sysctl__children;
584 SYSCTL_DECL(_kern);
585 SYSCTL_DECL(_sysctl);
586 SYSCTL_DECL(_vm);
587 SYSCTL_DECL(_vfs);
588 SYSCTL_DECL(_net);
589 SYSCTL_DECL(_debug);
590 SYSCTL_DECL(_debug_sizeof);
591 SYSCTL_DECL(_hw);
592 SYSCTL_DECL(_machdep);
593 SYSCTL_DECL(_user);
594 SYSCTL_DECL(_compat);
595 
596 extern char machine[];
597 extern char osrelease[];
598 extern char ostype[];
599 extern char kern_ident[];
600 
601 /* Dynamic oid handling */
602 struct sysctl_oid *sysctl_add_oid(struct sysctl_ctx_list *clist,
603  struct sysctl_oid_list *parent, int nbr, const char *name,
604  int kind, void *arg1, int arg2,
605  int (*handler) (SYSCTL_HANDLER_ARGS),
606  const char *fmt, const char *descr);
607 int sysctl_move_oid(struct sysctl_oid *oidp,
608  struct sysctl_oid_list *parent);
609 int sysctl_remove_oid(struct sysctl_oid *oidp, int del, int recurse);
610 int sysctl_ctx_init(struct sysctl_ctx_list *clist);
611 int sysctl_ctx_free(struct sysctl_ctx_list *clist);
612 struct sysctl_ctx_entry *sysctl_ctx_entry_add(struct sysctl_ctx_list *clist,
613  struct sysctl_oid *oidp);
614 struct sysctl_ctx_entry *sysctl_ctx_entry_find(struct sysctl_ctx_list *clist,
615  struct sysctl_oid *oidp);
616 int sysctl_ctx_entry_del(struct sysctl_ctx_list *clist,
617  struct sysctl_oid *oidp);
618 
619 int kernel_sysctl(struct thread *td, int *name, u_int namelen, void *old,
620  size_t *oldlenp, void *new, size_t newlen,
621  size_t *retval);
622 int kernel_sysctlbyname(struct thread *td, char *name,
623  void *old, size_t *oldlenp, void *new, size_t newlen,
624  size_t *retval);
625 int userland_sysctl(struct thread *td, int *name, u_int namelen, void *old,
626  size_t *oldlenp, int inkernel, void *new, size_t newlen,
627  size_t *retval);
628 int sysctl_find_oid(int *name, u_int namelen, struct sysctl_oid **noid,
629  int *nindx, struct sysctl_req *req);
630 int sysctl_wire_old_buffer(struct sysctl_req *req, size_t len);
631 
632 #else /* !_KERNEL */
633 #include <sys/cdefs.h>
634 
635 __BEGIN_DECLS
636 int sysctl(int *, u_int, void *, size_t *, void *, size_t);
637 int sysctlbyname(const char *, void *, size_t *, void *, size_t);
638 int sysctlnametomib(const char *, int *, size_t *);
639 __END_DECLS
640 #endif /* _KERNEL */
641 
642 #endif /* !_SYS_SYSCTL_H_ */
ctlname
Definition: sysctl.h:62
entry
Definition: nfs_prot.h:234
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