2 * Copyright (c) 1982, 1986, 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 * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
9 * project, to make these variables more userfriendly.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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 * 3. 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.
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
35 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include "opt_compat.h"
42 #include "opt_posix.h"
43 #include "opt_config.h"
45 #include <sys/param.h>
47 #include <sys/kernel.h>
49 #include <sys/mutex.h>
51 #include <sys/random.h>
55 #include <sys/sysctl.h>
56 #include <sys/systm.h>
57 #include <sys/unistd.h>
59 SYSCTL_ROOT_NODE(0, sysctl, CTLFLAG_RW, 0,
60 "Sysctl internal magic");
61 SYSCTL_ROOT_NODE(CTL_KERN, kern, CTLFLAG_RW|CTLFLAG_CAPRD, 0,
62 "High kernel, proc, limits &c");
63 SYSCTL_ROOT_NODE(CTL_VM, vm, CTLFLAG_RW, 0,
65 SYSCTL_ROOT_NODE(CTL_VFS, vfs, CTLFLAG_RW, 0,
67 SYSCTL_ROOT_NODE(CTL_NET, net, CTLFLAG_RW, 0,
68 "Network, (see socket.h)");
69 SYSCTL_ROOT_NODE(CTL_DEBUG, debug, CTLFLAG_RW, 0,
71 SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0,
72 "Sizeof various things");
73 SYSCTL_ROOT_NODE(CTL_HW, hw, CTLFLAG_RW, 0,
75 SYSCTL_ROOT_NODE(CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
77 SYSCTL_ROOT_NODE(CTL_USER, user, CTLFLAG_RW, 0,
79 SYSCTL_ROOT_NODE(CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0,
80 "p1003_1b, (see p1003_1b.h)");
82 SYSCTL_ROOT_NODE(OID_AUTO, compat, CTLFLAG_RW, 0,
83 "Compatibility code");
84 SYSCTL_ROOT_NODE(OID_AUTO, security, CTLFLAG_RW, 0,
87 SYSCTL_ROOT_NODE(OID_AUTO, regression, CTLFLAG_RW, 0,
88 "Regression test MIB");
91 SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE,
92 kern_ident, 0, "Kernel identifier");
94 SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD,
95 SYSCTL_NULL_INT_PTR, BSD, "Operating system revision");
97 SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE,
98 version, 0, "Kernel version");
100 SYSCTL_STRING(_kern, OID_AUTO, compiler_version, CTLFLAG_RD|CTLFLAG_MPSAFE,
101 compiler_version, 0, "Version of compiler used to compile kernel");
103 SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE|
104 CTLFLAG_CAPRD, ostype, 0, "Operating system type");
106 SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
107 &maxproc, 0, "Maximum number of processes");
109 SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW,
110 &maxprocperuid, 0, "Maximum processes allowed per userid");
112 SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
113 &maxusers, 0, "Hint for kernel tuning");
115 SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD|CTLFLAG_CAPRD,
116 SYSCTL_NULL_INT_PTR, ARG_MAX, "Maximum bytes of argument to execve(2)");
118 SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD|CTLFLAG_CAPRD,
119 SYSCTL_NULL_INT_PTR, _POSIX_VERSION, "Version of POSIX attempting to comply to");
121 SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN |
122 CTLFLAG_NOFETCH | CTLFLAG_CAPRD, &ngroups_max, 0,
123 "Maximum number of supplemental groups a user can belong to");
125 SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD|CTLFLAG_CAPRD,
126 SYSCTL_NULL_INT_PTR, 1, "Whether job control is available");
128 #ifdef _POSIX_SAVED_IDS
129 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD,
130 SYSCTL_NULL_INT_PTR, 1, "Whether saved set-group/user ID is available");
132 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD,
133 SYSCTL_NULL_INT_PTR, 0, "Whether saved set-group/user ID is available");
136 char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */
138 SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
139 kernelname, sizeof kernelname, "Name of kernel file booted");
141 SYSCTL_INT(_kern, KERN_MAXPHYS, maxphys, CTLFLAG_RD | CTLFLAG_CAPRD,
142 SYSCTL_NULL_INT_PTR, MAXPHYS, "Maximum block I/O access size");
144 SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD|CTLFLAG_CAPRD,
145 &mp_ncpus, 0, "Number of active CPUs");
147 SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD|CTLFLAG_CAPRD,
148 SYSCTL_NULL_INT_PTR, BYTE_ORDER, "System byte order");
150 SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD|CTLFLAG_CAPRD,
151 SYSCTL_NULL_INT_PTR, PAGE_SIZE, "System memory page size");
154 sysctl_kern_arnd(SYSCTL_HANDLER_ARGS)
160 * This is one of the very few legitimate uses of read_random(9).
161 * Use of arc4random(9) is not recommended as that will ignore
162 * an unsafe (i.e. unseeded) random(4).
164 * If random(4) is not seeded, then this returns 0, so the
165 * sysctl will return a zero-length buffer.
167 len = read_random(buf, MIN(req->oldlen, sizeof(buf)));
168 return (SYSCTL_OUT(req, buf, len));
171 SYSCTL_PROC(_kern, KERN_ARND, arandom,
172 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0,
173 sysctl_kern_arnd, "", "arc4rand");
176 sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
181 return (sysctl_handle_long(oidp, &val, 0, req));
184 SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD,
185 0, 0, sysctl_hw_physmem, "LU", "");
188 sysctl_hw_realmem(SYSCTL_HANDLER_ARGS)
192 return (sysctl_handle_long(oidp, &val, 0, req));
194 SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD,
195 0, 0, sysctl_hw_realmem, "LU", "");
197 sysctl_hw_usermem(SYSCTL_HANDLER_ARGS)
201 val = ctob(physmem - vm_cnt.v_wire_count);
202 return (sysctl_handle_long(oidp, &val, 0, req));
205 SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD,
206 0, 0, sysctl_hw_usermem, "LU", "");
208 SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");
210 u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE };
213 sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS)
218 uint32_t pagesizes32[MAXPAGESIZES];
220 if (req->flags & SCTL_MASK32) {
222 * Recreate the "pagesizes" array with 32-bit elements. Truncate
223 * any page size greater than UINT32_MAX to zero.
225 for (i = 0; i < MAXPAGESIZES; i++)
226 pagesizes32[i] = (uint32_t)pagesizes[i];
228 error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32));
231 error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes));
234 SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD,
235 NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes");
238 int adaptive_machine_arch = 1;
239 SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW,
240 &adaptive_machine_arch, 1,
241 "Adapt reported machine architecture to the ABI of the binary");
245 sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS)
248 static const char machine_arch[] = MACHINE_ARCH;
250 static const char machine_arch32[] = MACHINE_ARCH32;
252 if ((req->flags & SCTL_MASK32) != 0 && adaptive_machine_arch)
253 error = SYSCTL_OUT(req, machine_arch32, sizeof(machine_arch32));
256 error = SYSCTL_OUT(req, machine_arch, sizeof(machine_arch));
260 SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD,
261 NULL, 0, sysctl_hw_machine_arch, "A", "System architecture");
263 SYSCTL_STRING(_kern, OID_AUTO, supported_archs, CTLFLAG_RD | CTLFLAG_MPSAFE,
264 #ifdef COMPAT_FREEBSD32
265 MACHINE_ARCH " " MACHINE_ARCH32, 0, "Supported architectures for binaries");
267 MACHINE_ARCH, 0, "Supported architectures for binaries");
271 sysctl_hostname(SYSCTL_HANDLER_ARGS)
273 struct prison *pr, *cpr;
275 char tmpname[MAXHOSTNAMELEN];
276 int descend, error, len;
279 * This function can set: hostname domainname hostuuid.
280 * Keep that in mind when comments say "hostname".
282 pr_offset = (size_t)arg1;
284 KASSERT(len <= sizeof(tmpname),
285 ("length %d too long for %s", len, __func__));
287 pr = req->td->td_ucred->cr_prison;
288 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
291 * Make a local copy of hostname to get/set so we don't have to hold
292 * the jail mutex during the sysctl copyin/copyout activities.
294 mtx_lock(&pr->pr_mtx);
295 bcopy((char *)pr + pr_offset, tmpname, len);
296 mtx_unlock(&pr->pr_mtx);
298 error = sysctl_handle_string(oidp, tmpname, len, req);
300 if (req->newptr != NULL && error == 0) {
302 * Copy the locally set hostname to all jails that share
305 sx_slock(&allprison_lock);
306 while (!(pr->pr_flags & PR_HOST))
308 mtx_lock(&pr->pr_mtx);
309 bcopy(tmpname, (char *)pr + pr_offset, len);
310 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
311 if (cpr->pr_flags & PR_HOST)
314 bcopy(tmpname, (char *)cpr + pr_offset, len);
315 mtx_unlock(&pr->pr_mtx);
316 sx_sunlock(&allprison_lock);
321 SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
322 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE,
323 (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN,
324 sysctl_hostname, "A", "Hostname");
325 SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname,
326 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE,
327 (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN,
328 sysctl_hostname, "A", "Name of the current YP/NIS domain");
329 SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid,
330 CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE,
331 (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN,
332 sysctl_hostname, "A", "Host UUID");
334 static int regression_securelevel_nonmonotonic = 0;
337 SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW,
338 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered");
342 sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
344 struct prison *pr, *cpr;
345 int descend, error, level;
347 pr = req->td->td_ucred->cr_prison;
350 * Reading the securelevel is easy, since the current jail's level
351 * is known to be at least as secure as any higher levels. Perform
352 * a lockless read since the securelevel is an integer.
354 level = pr->pr_securelevel;
355 error = sysctl_handle_int(oidp, &level, 0, req);
356 if (error || !req->newptr)
358 /* Permit update only if the new securelevel exceeds the old. */
359 sx_slock(&allprison_lock);
360 mtx_lock(&pr->pr_mtx);
361 if (!regression_securelevel_nonmonotonic &&
362 level < pr->pr_securelevel) {
363 mtx_unlock(&pr->pr_mtx);
364 sx_sunlock(&allprison_lock);
367 pr->pr_securelevel = level;
369 * Set all child jails to be at least this level, but do not lower
370 * them (even if regression_securelevel_nonmonotonic).
372 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) {
373 if (cpr->pr_securelevel < level)
374 cpr->pr_securelevel = level;
376 mtx_unlock(&pr->pr_mtx);
377 sx_sunlock(&allprison_lock);
381 SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
382 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl,
383 "I", "Current secure level");
385 #ifdef INCLUDE_CONFIG_FILE
386 /* Actual kernel configuration options. */
387 extern char kernconfstring[];
389 SYSCTL_STRING(_kern, OID_AUTO, conftxt, CTLFLAG_RD, kernconfstring, 0,
390 "Kernel configuration file");
394 sysctl_hostid(SYSCTL_HANDLER_ARGS)
396 struct prison *pr, *cpr;
401 * Like sysctl_hostname, except it operates on a u_long
402 * instead of a string, and is used only for hostid.
404 pr = req->td->td_ucred->cr_prison;
405 if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
407 tmpid = pr->pr_hostid;
408 error = sysctl_handle_long(oidp, &tmpid, 0, req);
410 if (req->newptr != NULL && error == 0) {
411 sx_slock(&allprison_lock);
412 while (!(pr->pr_flags & PR_HOST))
414 mtx_lock(&pr->pr_mtx);
415 pr->pr_hostid = tmpid;
416 FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
417 if (cpr->pr_flags & PR_HOST)
420 cpr->pr_hostid = tmpid;
421 mtx_unlock(&pr->pr_mtx);
422 sx_sunlock(&allprison_lock);
427 SYSCTL_PROC(_kern, KERN_HOSTID, hostid,
428 CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE | CTLFLAG_CAPRD,
429 NULL, 0, sysctl_hostid, "LU", "Host ID");
432 * The osrelease string is copied from the global (osrelease in vers.c) into
433 * prison0 by a sysinit and is inherited by child jails if not changed at jail
434 * creation, so we always return the copy from the current prison data.
437 sysctl_osrelease(SYSCTL_HANDLER_ARGS)
441 pr = req->td->td_ucred->cr_prison;
442 return (SYSCTL_OUT(req, pr->pr_osrelease, strlen(pr->pr_osrelease) + 1));
446 SYSCTL_PROC(_kern, KERN_OSRELEASE, osrelease,
447 CTLTYPE_STRING | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE,
448 NULL, 0, sysctl_osrelease, "A", "Operating system release");
451 * The osreldate number is copied from the global (osreldate in vers.c) into
452 * prison0 by a sysinit and is inherited by child jails if not changed at jail
453 * creation, so we always return the value from the current prison data.
456 sysctl_osreldate(SYSCTL_HANDLER_ARGS)
460 pr = req->td->td_ucred->cr_prison;
461 return (SYSCTL_OUT(req, &pr->pr_osreldate, sizeof(pr->pr_osreldate)));
466 * NOTICE: The *userland* release date is available in
467 * /usr/include/osreldate.h
469 SYSCTL_PROC(_kern, KERN_OSRELDATE, osreldate,
470 CTLTYPE_INT | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE,
471 NULL, 0, sysctl_osreldate, "I", "Kernel release date");
473 SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");
475 #ifdef COMPAT_FREEBSD4
476 FEATURE(compat_freebsd4, "Compatible with FreeBSD 4");
479 #ifdef COMPAT_FREEBSD5
480 FEATURE(compat_freebsd5, "Compatible with FreeBSD 5");
483 #ifdef COMPAT_FREEBSD6
484 FEATURE(compat_freebsd6, "Compatible with FreeBSD 6");
487 #ifdef COMPAT_FREEBSD7
488 FEATURE(compat_freebsd7, "Compatible with FreeBSD 7");
492 * This is really cheating. These actually live in the libc, something
493 * which I'm not quite sure is a good idea anyway, but in order for
494 * getnext and friends to actually work, we define dummies here.
496 * XXXRW: These probably should be CTLFLAG_CAPRD.
498 SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
499 "", 0, "PATH that finds all the standard utilities");
500 SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
501 SYSCTL_NULL_INT_PTR, 0, "Max ibase/obase values in bc(1)");
502 SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
503 SYSCTL_NULL_INT_PTR, 0, "Max array size in bc(1)");
504 SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
505 SYSCTL_NULL_INT_PTR, 0, "Max scale value in bc(1)");
506 SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
507 SYSCTL_NULL_INT_PTR, 0, "Max string length in bc(1)");
508 SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
509 SYSCTL_NULL_INT_PTR, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
510 SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD,
511 SYSCTL_NULL_INT_PTR, 0, "");
512 SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
513 SYSCTL_NULL_INT_PTR, 0, "Max length (bytes) of a text-processing utility's input line");
514 SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
515 SYSCTL_NULL_INT_PTR, 0, "Maximum number of repeats of a regexp permitted");
516 SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
517 SYSCTL_NULL_INT_PTR, 0,
518 "The version of POSIX 1003.2 with which the system attempts to comply");
519 SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
520 SYSCTL_NULL_INT_PTR, 0, "Whether C development supports the C bindings option");
521 SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
522 SYSCTL_NULL_INT_PTR, 0, "Whether system supports the C development utilities option");
523 SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
524 SYSCTL_NULL_INT_PTR, 0, "");
525 SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
526 SYSCTL_NULL_INT_PTR, 0, "Whether system supports FORTRAN development utilities");
527 SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
528 SYSCTL_NULL_INT_PTR, 0, "Whether system supports FORTRAN runtime utilities");
529 SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
530 SYSCTL_NULL_INT_PTR, 0, "Whether system supports creation of locales");
531 SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
532 SYSCTL_NULL_INT_PTR, 0, "Whether system supports software development utilities");
533 SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
534 SYSCTL_NULL_INT_PTR, 0, "Whether system supports the user portability utilities");
535 SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
536 SYSCTL_NULL_INT_PTR, 0, "Min Maximum number of streams a process may have open at one time");
537 SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
538 SYSCTL_NULL_INT_PTR, 0, "Min Maximum number of types supported for timezone names");
540 #include <sys/vnode.h>
541 SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
542 SYSCTL_NULL_INT_PTR, sizeof(struct vnode), "sizeof(struct vnode)");
544 SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
545 SYSCTL_NULL_INT_PTR, sizeof(struct proc), "sizeof(struct proc)");
548 sysctl_kern_pid_max(SYSCTL_HANDLER_ARGS)
553 error = sysctl_handle_int(oidp, &pm, 0, req);
554 if (error || !req->newptr)
556 sx_xlock(&proctree_lock);
557 sx_xlock(&allproc_lock);
560 * Only permit the values less then PID_MAX.
561 * As a safety measure, do not allow to limit the pid_max too much.
563 if (pm < 300 || pm > PID_MAX)
567 sx_xunlock(&allproc_lock);
568 sx_xunlock(&proctree_lock);
571 SYSCTL_PROC(_kern, OID_AUTO, pid_max, CTLTYPE_INT |
572 CTLFLAG_RWTUN | CTLFLAG_NOFETCH | CTLFLAG_MPSAFE,
573 0, 0, sysctl_kern_pid_max, "I", "Maximum allowed pid");
577 SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD,
578 SYSCTL_NULL_INT_PTR, sizeof(struct bio), "sizeof(struct bio)");
579 SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD,
580 SYSCTL_NULL_INT_PTR, sizeof(struct buf), "sizeof(struct buf)");
582 #include <sys/user.h>
583 SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
584 SYSCTL_NULL_INT_PTR, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");
586 /* Used by kernel debuggers. */
587 const int pcb_size = sizeof(struct pcb);
588 SYSCTL_INT(_debug_sizeof, OID_AUTO, pcb, CTLFLAG_RD,
589 SYSCTL_NULL_INT_PTR, sizeof(struct pcb), "sizeof(struct pcb)");
591 /* XXX compatibility, remove for 6.0 */
592 #include <sys/imgact.h>
593 #include <sys/imgact_elf.h>
594 SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW,
595 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)),
596 "compatibility for kern.fallback_elf_brand");