1/*-
2 * Copyright (c) 1982, 1986, 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 * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
9 * project, to make these variables more userfriendly.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
36 */
37
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/sys/kern/kern_mib.c 224159 2011-07-17 23:05:24Z rwatson $");
40
41#include "opt_compat.h"
42#include "opt_posix.h"
43#include "opt_config.h"
44
45#include <sys/param.h>
46#include <sys/kernel.h>
47#include <sys/sbuf.h>
48#include <sys/systm.h>
49#include <sys/sysctl.h>
50#include <sys/proc.h>
51#include <sys/lock.h>
52#include <sys/mutex.h>
53#include <sys/jail.h>
54#include <sys/smp.h>
55#include <sys/sx.h>
56#include <sys/unistd.h>
57
58SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0,
59 "Sysctl internal magic");
60SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW|CTLFLAG_CAPRD, 0,
61 "High kernel, proc, limits &c");
62SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0,
63 "Virtual memory");
64SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0,
65 "File system");
66SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0,
67 "Network, (see socket.h)");
68SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0,
69 "Debugging");
70SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0,
71 "Sizeof various things");
72SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0,
73 "hardware");
74SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
75 "machine dependent");
76SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0,
77 "user-level");
78SYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0,
79 "p1003_1b, (see p1003_1b.h)");
80
81SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0,
82 "Compatibility code");
83SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0,
84 "Security");
85#ifdef REGRESSION
86SYSCTL_NODE(, OID_AUTO, regression, CTLFLAG_RW, 0,
87 "Regression test MIB");
88#endif
89
90SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE,
91 kern_ident, 0, "Kernel identifier");
92
93SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD|CTLFLAG_MPSAFE|
94 CTLFLAG_CAPRD, osrelease, 0, "Operating system release");
95
96SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD,
97 0, BSD, "Operating system revision");
98
99SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE,
100 version, 0, "Kernel version");
101
102SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE|
103 CTLFLAG_CAPRD, ostype, 0, "Operating system type");
104
105/*
106 * NOTICE: The *userland* release date is available in
107 * /usr/include/osreldate.h
108 */
109SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD|CTLFLAG_CAPRD,
110 &osreldate, 0, "Kernel release date");
111
112SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN,
113 &maxproc, 0, "Maximum number of processes");
114
115SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW,
116 &maxprocperuid, 0, "Maximum processes allowed per userid");
117
118SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN,
119 &maxusers, 0, "Hint for kernel tuning");
120
121SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD|CTLFLAG_CAPRD,
122 0, ARG_MAX, "Maximum bytes of argument to execve(2)");
123
124SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD|CTLFLAG_CAPRD,
125 0, _POSIX_VERSION, "Version of POSIX attempting to comply to");
126
127SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN|CTLFLAG_CAPRD,
128 &ngroups_max, 0,
129 "Maximum number of supplemental groups a user can belong to");
130
131SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD|CTLFLAG_CAPRD,
132 0, 1, "Whether job control is available");
133
134#ifdef _POSIX_SAVED_IDS
135SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD,
136 0, 1, "Whether saved set-group/user ID is available");
137#else
138SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD,
139 0, 0, "Whether saved set-group/user ID is available");
140#endif
141
142char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */
143
144SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
145 kernelname, sizeof kernelname, "Name of kernel file booted");
146
147SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD|CTLFLAG_CAPRD,
148 &mp_ncpus, 0, "Number of active CPUs");
149
150SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD|CTLFLAG_CAPRD,
151 0, BYTE_ORDER, "System byte order");
152
153SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD|CTLFLAG_CAPRD,
154 0, PAGE_SIZE, "System memory page size");
155
156static int
157sysctl_kern_arnd(SYSCTL_HANDLER_ARGS)
158{
159 char buf[256];
160 size_t len;
161
162 len = req->oldlen;
163 if (len > sizeof(buf))
164 len = sizeof(buf);
165 arc4rand(buf, len, 0);
166 return (SYSCTL_OUT(req, buf, len));
167}
168
169SYSCTL_PROC(_kern, KERN_ARND, arandom,
170 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0,
171 sysctl_kern_arnd, "", "arc4rand");
172
173static int
174sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
175{
176 u_long val;
177
178 val = ctob(physmem);
179 return (sysctl_handle_long(oidp, &val, 0, req));
180}
181
182SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD,
183 0, 0, sysctl_hw_physmem, "LU", "");
184
185static int
186sysctl_hw_realmem(SYSCTL_HANDLER_ARGS)
187{
188 u_long val;
189 val = ctob(realmem);
190 return (sysctl_handle_long(oidp, &val, 0, req));
191}
192SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD,
193 0, 0, sysctl_hw_realmem, "LU", "");
194static int
195sysctl_hw_usermem(SYSCTL_HANDLER_ARGS)
196{
197 u_long val;
198
199 val = ctob(physmem - cnt.v_wire_count);
200 return (sysctl_handle_long(oidp, &val, 0, req));
201}
202
203SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD,
204 0, 0, sysctl_hw_usermem, "LU", "");
205
206SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");
207
208u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE };
209
210static int
211sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS)
212{
213 int error;
214#ifdef SCTL_MASK32
215 int i;
216 uint32_t pagesizes32[MAXPAGESIZES];
217
218 if (req->flags & SCTL_MASK32) {
219 /*
220 * Recreate the "pagesizes" array with 32-bit elements. Truncate
221 * any page size greater than UINT32_MAX to zero.
222 */
223 for (i = 0; i < MAXPAGESIZES; i++)
224 pagesizes32[i] = (uint32_t)pagesizes[i];
225
226 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32));
227 } else
228#endif
229 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes));
230 return (error);
231}
232SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD,
233 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes");
234
235#ifdef SCTL_MASK32
236int adaptive_machine_arch = 1;
237SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW,
238 &adaptive_machine_arch, 1,
239 "Adapt reported machine architecture to the ABI of the binary");
240#endif
241
242static int
243sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS)
244{
245 int error;
246 static const char machine_arch[] = MACHINE_ARCH;
247#ifdef SCTL_MASK32
248 static const char machine_arch32[] = MACHINE_ARCH32;
249
250 if ((req->flags & SCTL_MASK32) != 0 && adaptive_machine_arch)
251 error = SYSCTL_OUT(req, machine_arch32, sizeof(machine_arch32));
252 else
253#endif
254 error = SYSCTL_OUT(req, machine_arch, sizeof(machine_arch));
255 return (error);
256
257}
258SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD,
259 NULL, 0, sysctl_hw_machine_arch, "A", "System architecture");
260
261static int
262sysctl_hostname(SYSCTL_HANDLER_ARGS)
263{
264 struct prison *pr, *cpr;
265 size_t pr_offset;
266 char tmpname[MAXHOSTNAMELEN];
267 int descend, error, len;
268
269 /*
270 * This function can set: hostname domainname hostuuid.
271 * Keep that in mind when comments say "hostname".
272 */
273 pr_offset = (size_t)arg1;
274 len = arg2;
275 KASSERT(len <= sizeof(tmpname),
276 ("length %d too long for %s", len, __func__));
277
278 pr = req->td->td_ucred->cr_prison;
279 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
280 return (EPERM);
281 /*
282 * Make a local copy of hostname to get/set so we don't have to hold
283 * the jail mutex during the sysctl copyin/copyout activities.
284 */
285 mtx_lock(&pr->pr_mtx);
286 bcopy((char *)pr + pr_offset, tmpname, len);
287 mtx_unlock(&pr->pr_mtx);
288
289 error = sysctl_handle_string(oidp, tmpname, len, req);
290
291 if (req->newptr != NULL && error == 0) {
292 /*
293 * Copy the locally set hostname to all jails that share
294 * this host info.
295 */
296 sx_slock(&allprison_lock);
297 while (!(pr->pr_flags & PR_HOST))
298 pr = pr->pr_parent;
299 mtx_lock(&pr->pr_mtx);
300 bcopy(tmpname, (char *)pr + pr_offset, len);
301 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
302 if (cpr->pr_flags & PR_HOST)
303 descend = 0;
304 else
305 bcopy(tmpname, (char *)cpr + pr_offset, len);
306 mtx_unlock(&pr->pr_mtx);
307 sx_sunlock(&allprison_lock);
308 }
309 return (error);
310}
311
312SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
313 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
314 (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN,
315 sysctl_hostname, "A", "Hostname");
316SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname,
317 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
318 (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN,
319 sysctl_hostname, "A", "Name of the current YP/NIS domain");
320SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid,
321 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
322 (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN,
323 sysctl_hostname, "A", "Host UUID");
324
325static int regression_securelevel_nonmonotonic = 0;
326
327#ifdef REGRESSION
328SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW,
329 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered");
330#endif
331
332static int
333sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
334{
335 struct prison *pr, *cpr;
336 int descend, error, level;
337
338 pr = req->td->td_ucred->cr_prison;
339
340 /*
341 * Reading the securelevel is easy, since the current jail's level
342 * is known to be at least as secure as any higher levels. Perform
343 * a lockless read since the securelevel is an integer.
344 */
345 level = pr->pr_securelevel;
346 error = sysctl_handle_int(oidp, &level, 0, req);
347 if (error || !req->newptr)
348 return (error);
349 /* Permit update only if the new securelevel exceeds the old. */
350 sx_slock(&allprison_lock);
351 mtx_lock(&pr->pr_mtx);
352 if (!regression_securelevel_nonmonotonic &&
353 level < pr->pr_securelevel) {
354 mtx_unlock(&pr->pr_mtx);
355 sx_sunlock(&allprison_lock);
356 return (EPERM);
357 }
358 pr->pr_securelevel = level;
359 /*
360 * Set all child jails to be at least this level, but do not lower
361 * them (even if regression_securelevel_nonmonotonic).
362 */
363 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) {
364 if (cpr->pr_securelevel < level)
365 cpr->pr_securelevel = level;
366 }
367 mtx_unlock(&pr->pr_mtx);
368 sx_sunlock(&allprison_lock);
369 return (error);
370}
371
372SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
373 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl,
374 "I", "Current secure level");
375
376#ifdef INCLUDE_CONFIG_FILE
377/* Actual kernel configuration options. */
378extern char kernconfstring[];
379
380static int
381sysctl_kern_config(SYSCTL_HANDLER_ARGS)
382{
383 return (sysctl_handle_string(oidp, kernconfstring,
384 strlen(kernconfstring), req));
385}
386
387SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW,
388 0, 0, sysctl_kern_config, "", "Kernel configuration file");
389#endif
390
391static int
392sysctl_hostid(SYSCTL_HANDLER_ARGS)
393{
394 struct prison *pr, *cpr;
395 u_long tmpid;
396 int descend, error;
397
398 /*
399 * Like sysctl_hostname, except it operates on a u_long
400 * instead of a string, and is used only for hostid.
401 */
402 pr = req->td->td_ucred->cr_prison;
403 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
404 return (EPERM);
405 tmpid = pr->pr_hostid;
406 error = sysctl_handle_long(oidp, &tmpid, 0, req);
407
408 if (req->newptr != NULL && error == 0) {
409 sx_slock(&allprison_lock);
410 while (!(pr->pr_flags & PR_HOST))
411 pr = pr->pr_parent;
412 mtx_lock(&pr->pr_mtx);
413 pr->pr_hostid = tmpid;
414 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
415 if (cpr->pr_flags & PR_HOST)
416 descend = 0;
417 else
418 cpr->pr_hostid = tmpid;
419 mtx_unlock(&pr->pr_mtx);
420 sx_sunlock(&allprison_lock);
421 }
422 return (error);
423}
424
425SYSCTL_PROC(_kern, KERN_HOSTID, hostid,
426 CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
427 NULL, 0, sysctl_hostid, "LU", "Host ID");
428
429SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");
430
431#ifdef COMPAT_FREEBSD4
432FEATURE(compat_freebsd4, "Compatible with FreeBSD 4");
433#endif
434
435#ifdef COMPAT_FREEBSD5
436FEATURE(compat_freebsd5, "Compatible with FreeBSD 5");
437#endif
438
439#ifdef COMPAT_FREEBSD6
440FEATURE(compat_freebsd6, "Compatible with FreeBSD 6");
441#endif
442
443#ifdef COMPAT_FREEBSD7
444FEATURE(compat_freebsd7, "Compatible with FreeBSD 7");
445#endif
446
447/*
448 * This is really cheating. These actually live in the libc, something
449 * which I'm not quite sure is a good idea anyway, but in order for
450 * getnext and friends to actually work, we define dummies here.
451 *
452 * XXXRW: These probably should be CTLFLAG_CAPRD.
453 */
454SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
455 "", 0, "PATH that finds all the standard utilities");
456SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
457 0, 0, "Max ibase/obase values in bc(1)");
458SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
459 0, 0, "Max array size in bc(1)");
460SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
461 0, 0, "Max scale value in bc(1)");
462SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
463 0, 0, "Max string length in bc(1)");
464SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
465 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
466SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
467SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
468 0, 0, "Max length (bytes) of a text-processing utility's input line");
469SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
470 0, 0, "Maximum number of repeats of a regexp permitted");
471SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
472 0, 0,
473 "The version of POSIX 1003.2 with which the system attempts to comply");
474SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
475 0, 0, "Whether C development supports the C bindings option");
476SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
477 0, 0, "Whether system supports the C development utilities option");
478SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
479 0, 0, "");
480SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
481 0, 0, "Whether system supports FORTRAN development utilities");
482SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
483 0, 0, "Whether system supports FORTRAN runtime utilities");
484SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
485 0, 0, "Whether system supports creation of locales");
486SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
487 0, 0, "Whether system supports software development utilities");
488SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
489 0, 0, "Whether system supports the user portability utilities");
490SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
491 0, 0, "Min Maximum number of streams a process may have open at one time");
492SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
493 0, 0, "Min Maximum number of types supported for timezone names");
494
495#include <sys/vnode.h>
496SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
497 0, sizeof(struct vnode), "sizeof(struct vnode)");
498
499SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
500 0, sizeof(struct proc), "sizeof(struct proc)");
501
502#include <sys/bio.h>
503#include <sys/buf.h>
504SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD,
505 0, sizeof(struct bio), "sizeof(struct bio)");
506SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD,
507 0, sizeof(struct buf), "sizeof(struct buf)");
508
509#include <sys/user.h>
510SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
511 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");
512
513/* XXX compatibility, remove for 6.0 */
514#include <sys/imgact.h>
515#include <sys/imgact_elf.h>
516SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW,
517 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)),
518 "compatibility for kern.fallback_elf_brand");
2 * Copyright (c) 1982, 1986, 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 * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
9 * project, to make these variables more userfriendly.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
36 */
37
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/sys/kern/kern_mib.c 224159 2011-07-17 23:05:24Z rwatson $");
40
41#include "opt_compat.h"
42#include "opt_posix.h"
43#include "opt_config.h"
44
45#include <sys/param.h>
46#include <sys/kernel.h>
47#include <sys/sbuf.h>
48#include <sys/systm.h>
49#include <sys/sysctl.h>
50#include <sys/proc.h>
51#include <sys/lock.h>
52#include <sys/mutex.h>
53#include <sys/jail.h>
54#include <sys/smp.h>
55#include <sys/sx.h>
56#include <sys/unistd.h>
57
58SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0,
59 "Sysctl internal magic");
60SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW|CTLFLAG_CAPRD, 0,
61 "High kernel, proc, limits &c");
62SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0,
63 "Virtual memory");
64SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0,
65 "File system");
66SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0,
67 "Network, (see socket.h)");
68SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0,
69 "Debugging");
70SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0,
71 "Sizeof various things");
72SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0,
73 "hardware");
74SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
75 "machine dependent");
76SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0,
77 "user-level");
78SYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0,
79 "p1003_1b, (see p1003_1b.h)");
80
81SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0,
82 "Compatibility code");
83SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0,
84 "Security");
85#ifdef REGRESSION
86SYSCTL_NODE(, OID_AUTO, regression, CTLFLAG_RW, 0,
87 "Regression test MIB");
88#endif
89
90SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE,
91 kern_ident, 0, "Kernel identifier");
92
93SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD|CTLFLAG_MPSAFE|
94 CTLFLAG_CAPRD, osrelease, 0, "Operating system release");
95
96SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD,
97 0, BSD, "Operating system revision");
98
99SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE,
100 version, 0, "Kernel version");
101
102SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE|
103 CTLFLAG_CAPRD, ostype, 0, "Operating system type");
104
105/*
106 * NOTICE: The *userland* release date is available in
107 * /usr/include/osreldate.h
108 */
109SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD|CTLFLAG_CAPRD,
110 &osreldate, 0, "Kernel release date");
111
112SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN,
113 &maxproc, 0, "Maximum number of processes");
114
115SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW,
116 &maxprocperuid, 0, "Maximum processes allowed per userid");
117
118SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN,
119 &maxusers, 0, "Hint for kernel tuning");
120
121SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD|CTLFLAG_CAPRD,
122 0, ARG_MAX, "Maximum bytes of argument to execve(2)");
123
124SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD|CTLFLAG_CAPRD,
125 0, _POSIX_VERSION, "Version of POSIX attempting to comply to");
126
127SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN|CTLFLAG_CAPRD,
128 &ngroups_max, 0,
129 "Maximum number of supplemental groups a user can belong to");
130
131SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD|CTLFLAG_CAPRD,
132 0, 1, "Whether job control is available");
133
134#ifdef _POSIX_SAVED_IDS
135SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD,
136 0, 1, "Whether saved set-group/user ID is available");
137#else
138SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD,
139 0, 0, "Whether saved set-group/user ID is available");
140#endif
141
142char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */
143
144SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
145 kernelname, sizeof kernelname, "Name of kernel file booted");
146
147SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD|CTLFLAG_CAPRD,
148 &mp_ncpus, 0, "Number of active CPUs");
149
150SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD|CTLFLAG_CAPRD,
151 0, BYTE_ORDER, "System byte order");
152
153SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD|CTLFLAG_CAPRD,
154 0, PAGE_SIZE, "System memory page size");
155
156static int
157sysctl_kern_arnd(SYSCTL_HANDLER_ARGS)
158{
159 char buf[256];
160 size_t len;
161
162 len = req->oldlen;
163 if (len > sizeof(buf))
164 len = sizeof(buf);
165 arc4rand(buf, len, 0);
166 return (SYSCTL_OUT(req, buf, len));
167}
168
169SYSCTL_PROC(_kern, KERN_ARND, arandom,
170 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0,
171 sysctl_kern_arnd, "", "arc4rand");
172
173static int
174sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
175{
176 u_long val;
177
178 val = ctob(physmem);
179 return (sysctl_handle_long(oidp, &val, 0, req));
180}
181
182SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD,
183 0, 0, sysctl_hw_physmem, "LU", "");
184
185static int
186sysctl_hw_realmem(SYSCTL_HANDLER_ARGS)
187{
188 u_long val;
189 val = ctob(realmem);
190 return (sysctl_handle_long(oidp, &val, 0, req));
191}
192SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD,
193 0, 0, sysctl_hw_realmem, "LU", "");
194static int
195sysctl_hw_usermem(SYSCTL_HANDLER_ARGS)
196{
197 u_long val;
198
199 val = ctob(physmem - cnt.v_wire_count);
200 return (sysctl_handle_long(oidp, &val, 0, req));
201}
202
203SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD,
204 0, 0, sysctl_hw_usermem, "LU", "");
205
206SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");
207
208u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE };
209
210static int
211sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS)
212{
213 int error;
214#ifdef SCTL_MASK32
215 int i;
216 uint32_t pagesizes32[MAXPAGESIZES];
217
218 if (req->flags & SCTL_MASK32) {
219 /*
220 * Recreate the "pagesizes" array with 32-bit elements. Truncate
221 * any page size greater than UINT32_MAX to zero.
222 */
223 for (i = 0; i < MAXPAGESIZES; i++)
224 pagesizes32[i] = (uint32_t)pagesizes[i];
225
226 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32));
227 } else
228#endif
229 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes));
230 return (error);
231}
232SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD,
233 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes");
234
235#ifdef SCTL_MASK32
236int adaptive_machine_arch = 1;
237SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW,
238 &adaptive_machine_arch, 1,
239 "Adapt reported machine architecture to the ABI of the binary");
240#endif
241
242static int
243sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS)
244{
245 int error;
246 static const char machine_arch[] = MACHINE_ARCH;
247#ifdef SCTL_MASK32
248 static const char machine_arch32[] = MACHINE_ARCH32;
249
250 if ((req->flags & SCTL_MASK32) != 0 && adaptive_machine_arch)
251 error = SYSCTL_OUT(req, machine_arch32, sizeof(machine_arch32));
252 else
253#endif
254 error = SYSCTL_OUT(req, machine_arch, sizeof(machine_arch));
255 return (error);
256
257}
258SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD,
259 NULL, 0, sysctl_hw_machine_arch, "A", "System architecture");
260
261static int
262sysctl_hostname(SYSCTL_HANDLER_ARGS)
263{
264 struct prison *pr, *cpr;
265 size_t pr_offset;
266 char tmpname[MAXHOSTNAMELEN];
267 int descend, error, len;
268
269 /*
270 * This function can set: hostname domainname hostuuid.
271 * Keep that in mind when comments say "hostname".
272 */
273 pr_offset = (size_t)arg1;
274 len = arg2;
275 KASSERT(len <= sizeof(tmpname),
276 ("length %d too long for %s", len, __func__));
277
278 pr = req->td->td_ucred->cr_prison;
279 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
280 return (EPERM);
281 /*
282 * Make a local copy of hostname to get/set so we don't have to hold
283 * the jail mutex during the sysctl copyin/copyout activities.
284 */
285 mtx_lock(&pr->pr_mtx);
286 bcopy((char *)pr + pr_offset, tmpname, len);
287 mtx_unlock(&pr->pr_mtx);
288
289 error = sysctl_handle_string(oidp, tmpname, len, req);
290
291 if (req->newptr != NULL && error == 0) {
292 /*
293 * Copy the locally set hostname to all jails that share
294 * this host info.
295 */
296 sx_slock(&allprison_lock);
297 while (!(pr->pr_flags & PR_HOST))
298 pr = pr->pr_parent;
299 mtx_lock(&pr->pr_mtx);
300 bcopy(tmpname, (char *)pr + pr_offset, len);
301 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
302 if (cpr->pr_flags & PR_HOST)
303 descend = 0;
304 else
305 bcopy(tmpname, (char *)cpr + pr_offset, len);
306 mtx_unlock(&pr->pr_mtx);
307 sx_sunlock(&allprison_lock);
308 }
309 return (error);
310}
311
312SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
313 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
314 (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN,
315 sysctl_hostname, "A", "Hostname");
316SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname,
317 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
318 (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN,
319 sysctl_hostname, "A", "Name of the current YP/NIS domain");
320SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid,
321 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
322 (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN,
323 sysctl_hostname, "A", "Host UUID");
324
325static int regression_securelevel_nonmonotonic = 0;
326
327#ifdef REGRESSION
328SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW,
329 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered");
330#endif
331
332static int
333sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
334{
335 struct prison *pr, *cpr;
336 int descend, error, level;
337
338 pr = req->td->td_ucred->cr_prison;
339
340 /*
341 * Reading the securelevel is easy, since the current jail's level
342 * is known to be at least as secure as any higher levels. Perform
343 * a lockless read since the securelevel is an integer.
344 */
345 level = pr->pr_securelevel;
346 error = sysctl_handle_int(oidp, &level, 0, req);
347 if (error || !req->newptr)
348 return (error);
349 /* Permit update only if the new securelevel exceeds the old. */
350 sx_slock(&allprison_lock);
351 mtx_lock(&pr->pr_mtx);
352 if (!regression_securelevel_nonmonotonic &&
353 level < pr->pr_securelevel) {
354 mtx_unlock(&pr->pr_mtx);
355 sx_sunlock(&allprison_lock);
356 return (EPERM);
357 }
358 pr->pr_securelevel = level;
359 /*
360 * Set all child jails to be at least this level, but do not lower
361 * them (even if regression_securelevel_nonmonotonic).
362 */
363 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) {
364 if (cpr->pr_securelevel < level)
365 cpr->pr_securelevel = level;
366 }
367 mtx_unlock(&pr->pr_mtx);
368 sx_sunlock(&allprison_lock);
369 return (error);
370}
371
372SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
373 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl,
374 "I", "Current secure level");
375
376#ifdef INCLUDE_CONFIG_FILE
377/* Actual kernel configuration options. */
378extern char kernconfstring[];
379
380static int
381sysctl_kern_config(SYSCTL_HANDLER_ARGS)
382{
383 return (sysctl_handle_string(oidp, kernconfstring,
384 strlen(kernconfstring), req));
385}
386
387SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW,
388 0, 0, sysctl_kern_config, "", "Kernel configuration file");
389#endif
390
391static int
392sysctl_hostid(SYSCTL_HANDLER_ARGS)
393{
394 struct prison *pr, *cpr;
395 u_long tmpid;
396 int descend, error;
397
398 /*
399 * Like sysctl_hostname, except it operates on a u_long
400 * instead of a string, and is used only for hostid.
401 */
402 pr = req->td->td_ucred->cr_prison;
403 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
404 return (EPERM);
405 tmpid = pr->pr_hostid;
406 error = sysctl_handle_long(oidp, &tmpid, 0, req);
407
408 if (req->newptr != NULL && error == 0) {
409 sx_slock(&allprison_lock);
410 while (!(pr->pr_flags & PR_HOST))
411 pr = pr->pr_parent;
412 mtx_lock(&pr->pr_mtx);
413 pr->pr_hostid = tmpid;
414 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
415 if (cpr->pr_flags & PR_HOST)
416 descend = 0;
417 else
418 cpr->pr_hostid = tmpid;
419 mtx_unlock(&pr->pr_mtx);
420 sx_sunlock(&allprison_lock);
421 }
422 return (error);
423}
424
425SYSCTL_PROC(_kern, KERN_HOSTID, hostid,
426 CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
427 NULL, 0, sysctl_hostid, "LU", "Host ID");
428
429SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");
430
431#ifdef COMPAT_FREEBSD4
432FEATURE(compat_freebsd4, "Compatible with FreeBSD 4");
433#endif
434
435#ifdef COMPAT_FREEBSD5
436FEATURE(compat_freebsd5, "Compatible with FreeBSD 5");
437#endif
438
439#ifdef COMPAT_FREEBSD6
440FEATURE(compat_freebsd6, "Compatible with FreeBSD 6");
441#endif
442
443#ifdef COMPAT_FREEBSD7
444FEATURE(compat_freebsd7, "Compatible with FreeBSD 7");
445#endif
446
447/*
448 * This is really cheating. These actually live in the libc, something
449 * which I'm not quite sure is a good idea anyway, but in order for
450 * getnext and friends to actually work, we define dummies here.
451 *
452 * XXXRW: These probably should be CTLFLAG_CAPRD.
453 */
454SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
455 "", 0, "PATH that finds all the standard utilities");
456SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
457 0, 0, "Max ibase/obase values in bc(1)");
458SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
459 0, 0, "Max array size in bc(1)");
460SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
461 0, 0, "Max scale value in bc(1)");
462SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
463 0, 0, "Max string length in bc(1)");
464SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
465 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
466SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
467SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
468 0, 0, "Max length (bytes) of a text-processing utility's input line");
469SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
470 0, 0, "Maximum number of repeats of a regexp permitted");
471SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
472 0, 0,
473 "The version of POSIX 1003.2 with which the system attempts to comply");
474SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
475 0, 0, "Whether C development supports the C bindings option");
476SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
477 0, 0, "Whether system supports the C development utilities option");
478SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
479 0, 0, "");
480SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
481 0, 0, "Whether system supports FORTRAN development utilities");
482SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
483 0, 0, "Whether system supports FORTRAN runtime utilities");
484SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
485 0, 0, "Whether system supports creation of locales");
486SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
487 0, 0, "Whether system supports software development utilities");
488SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
489 0, 0, "Whether system supports the user portability utilities");
490SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
491 0, 0, "Min Maximum number of streams a process may have open at one time");
492SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
493 0, 0, "Min Maximum number of types supported for timezone names");
494
495#include <sys/vnode.h>
496SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
497 0, sizeof(struct vnode), "sizeof(struct vnode)");
498
499SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
500 0, sizeof(struct proc), "sizeof(struct proc)");
501
502#include <sys/bio.h>
503#include <sys/buf.h>
504SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD,
505 0, sizeof(struct bio), "sizeof(struct bio)");
506SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD,
507 0, sizeof(struct buf), "sizeof(struct buf)");
508
509#include <sys/user.h>
510SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
511 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");
512
513/* XXX compatibility, remove for 6.0 */
514#include <sys/imgact.h>
515#include <sys/imgact_elf.h>
516SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW,
517 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)),
518 "compatibility for kern.fallback_elf_brand");