summaryrefslogtreecommitdiffstats
path: root/sys/kern/kern_mib.c
blob: 04e4dc0437b72eb39808aff41f467f1cf4577a33 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
/*-
 * Copyright (c) 1982, 1986, 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Mike Karels at Berkeley Software Design, Inc.
 *
 * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
 * project, to make these variables more userfriendly.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)kern_sysctl.c	8.4 (Berkeley) 4/14/94
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include "opt_compat.h"
#include "opt_posix.h"
#include "opt_config.h"

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/sbuf.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/jail.h>
#include <sys/smp.h>
#include <sys/sx.h>
#include <sys/unistd.h>

SYSCTL_NODE(, 0,	  sysctl, CTLFLAG_RW, 0,
	"Sysctl internal magic");
SYSCTL_NODE(, CTL_KERN,	  kern,   CTLFLAG_RW, 0,
	"High kernel, proc, limits &c");
SYSCTL_NODE(, CTL_VM,	  vm,     CTLFLAG_RW, 0,
	"Virtual memory");
SYSCTL_NODE(, CTL_VFS,	  vfs,     CTLFLAG_RW, 0,
	"File system");
SYSCTL_NODE(, CTL_NET,	  net,    CTLFLAG_RW, 0,
	"Network, (see socket.h)");
SYSCTL_NODE(, CTL_DEBUG,  debug,  CTLFLAG_RW, 0,
	"Debugging");
SYSCTL_NODE(_debug, OID_AUTO,  sizeof,  CTLFLAG_RW, 0,
	"Sizeof various things");
SYSCTL_NODE(, CTL_HW,	  hw,     CTLFLAG_RW, 0,
	"hardware");
SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
	"machine dependent");
SYSCTL_NODE(, CTL_USER,	  user,   CTLFLAG_RW, 0,
	"user-level");
SYSCTL_NODE(, CTL_P1003_1B,  p1003_1b,   CTLFLAG_RW, 0,
	"p1003_1b, (see p1003_1b.h)");

SYSCTL_NODE(, OID_AUTO,  compat, CTLFLAG_RW, 0,
	"Compatibility code");
SYSCTL_NODE(, OID_AUTO, security, CTLFLAG_RW, 0, 
     	"Security");
#ifdef REGRESSION
SYSCTL_NODE(, OID_AUTO, regression, CTLFLAG_RW, 0,
     "Regression test MIB");
#endif

SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE,
    kern_ident, 0, "Kernel identifier");

SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD|CTLFLAG_MPSAFE,
    osrelease, 0, "Operating system release");

SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD,
    0, BSD, "Operating system revision");

SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE,
    version, 0, "Kernel version");

SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE,
    ostype, 0, "Operating system type");

/*
 * NOTICE: The *userland* release date is available in
 * /usr/include/osreldate.h
 */
SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD,
    &osreldate, 0, "Kernel release date");

SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN,
    &maxproc, 0, "Maximum number of processes");

SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW,
    &maxprocperuid, 0, "Maximum processes allowed per userid");

SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN,
    &maxusers, 0, "Hint for kernel tuning");

SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD,
    0, ARG_MAX, "Maximum bytes of argument to execve(2)");

SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD,
    0, _POSIX_VERSION, "Version of POSIX attempting to comply to");

SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD,
    0, NGROUPS_MAX, "Maximum number of groups a user can belong to");

SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD,
    0, 1, "Whether job control is available");

#ifdef _POSIX_SAVED_IDS
SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
    0, 1, "Whether saved set-group/user ID is available");
#else
SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
    0, 0, "Whether saved set-group/user ID is available");
#endif

char kernelname[MAXPATHLEN] = "/kernel";	/* XXX bloat */

SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
    kernelname, sizeof kernelname, "Name of kernel file booted");

SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD,
    &mp_ncpus, 0, "Number of active CPUs");

SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD,
    0, BYTE_ORDER, "System byte order");

SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD,
    0, PAGE_SIZE, "System memory page size");

static int
sysctl_kern_arnd(SYSCTL_HANDLER_ARGS)
{
	char buf[256];
	size_t len;

	len = req->oldlen;
	if (len > sizeof(buf))
		len = sizeof(buf);
	arc4rand(buf, len, 0);
	return (SYSCTL_OUT(req, buf, len));
}

SYSCTL_PROC(_kern, KERN_ARND, arandom,
    CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
    sysctl_kern_arnd, "", "arc4rand");

static int
sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
{
	u_long val;

	val = ctob(physmem);
	return (sysctl_handle_long(oidp, &val, 0, req));
}

SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD,
	0, 0, sysctl_hw_physmem, "LU", "");

static int
sysctl_hw_realmem(SYSCTL_HANDLER_ARGS)
{
	u_long val;
	val = ctob(realmem);
	return (sysctl_handle_long(oidp, &val, 0, req));
}
SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD,
	0, 0, sysctl_hw_realmem, "LU", "");
static int
sysctl_hw_usermem(SYSCTL_HANDLER_ARGS)
{
	u_long val;

	val = ctob(physmem - cnt.v_wire_count);
	return (sysctl_handle_long(oidp, &val, 0, req));
}

SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD,
	0, 0, sysctl_hw_usermem, "LU", "");

SYSCTL_ULONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");

u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE };

static int
sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS)
{
	int error;
#ifdef SCTL_MASK32
	int i;
	uint32_t pagesizes32[MAXPAGESIZES];

	if (req->flags & SCTL_MASK32) {
		/*
		 * Recreate the "pagesizes" array with 32-bit elements.  Truncate
		 * any page size greater than UINT32_MAX to zero.
		 */
		for (i = 0; i < MAXPAGESIZES; i++)
			pagesizes32[i] = (uint32_t)pagesizes[i];

		error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32));
	} else
#endif
		error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes));
	return (error);
}
SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD,
    NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes");

static char	machine_arch[] = MACHINE_ARCH;
SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
    machine_arch, 0, "System architecture");

static int
sysctl_hostname(SYSCTL_HANDLER_ARGS)
{
	struct prison *pr, *cpr;
	size_t pr_offset;
	char tmpname[MAXHOSTNAMELEN];
	int descend, error, len;

	/*
	 * This function can set: hostname domainname hostuuid.
	 * Keep that in mind when comments say "hostname".
	 */
	pr_offset = (size_t)arg1;
	len = arg2;
	KASSERT(len <= sizeof(tmpname),
	    ("length %d too long for %s", len, __func__));

	pr = req->td->td_ucred->cr_prison;
	if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
		return (EPERM);
	/*
	 * Make a local copy of hostname to get/set so we don't have to hold
	 * the jail mutex during the sysctl copyin/copyout activities.
	 */
	mtx_lock(&pr->pr_mtx);
	bcopy((char *)pr + pr_offset, tmpname, len);
	mtx_unlock(&pr->pr_mtx);

	error = sysctl_handle_string(oidp, tmpname, len, req);

	if (req->newptr != NULL && error == 0) {
		/*
		 * Copy the locally set hostname to all jails that share
		 * this host info.
		 */
		sx_slock(&allprison_lock);
		while (!(pr->pr_flags & PR_HOST))
			pr = pr->pr_parent;
		mtx_lock(&pr->pr_mtx);
		bcopy(tmpname, (char *)pr + pr_offset, len);
		FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
			if (cpr->pr_flags & PR_HOST)
				descend = 0;
			else
				bcopy(tmpname, (char *)cpr + pr_offset, len);
		mtx_unlock(&pr->pr_mtx);
		sx_sunlock(&allprison_lock);
	}
	return (error);
}

SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
    CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
    (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN,
    sysctl_hostname, "A", "Hostname");
SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname,
    CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
    (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN,
    sysctl_hostname, "A", "Name of the current YP/NIS domain");
SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid,
    CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
    (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN,
    sysctl_hostname, "A", "Host UUID");

static int	regression_securelevel_nonmonotonic = 0;

#ifdef REGRESSION
SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW,
    &regression_securelevel_nonmonotonic, 0, "securelevel may be lowered");
#endif

static int
sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
{
	struct prison *pr, *cpr;
	int descend, error, level;

	pr = req->td->td_ucred->cr_prison;

	/*
	 * Reading the securelevel is easy, since the current jail's level
	 * is known to be at least as secure as any higher levels.  Perform
	 * a lockless read since the securelevel is an integer.
	 */
	level = pr->pr_securelevel;
	error = sysctl_handle_int(oidp, &level, 0, req);
	if (error || !req->newptr)
		return (error);
	/* Permit update only if the new securelevel exceeds the old. */
	sx_slock(&allprison_lock);
	mtx_lock(&pr->pr_mtx);
	if (!regression_securelevel_nonmonotonic &&
	    level < pr->pr_securelevel) {
		mtx_unlock(&pr->pr_mtx);
		sx_sunlock(&allprison_lock);
		return (EPERM);
	}
	pr->pr_securelevel = level;
	/*
	 * Set all child jails to be at least this level, but do not lower
	 * them (even if regression_securelevel_nonmonotonic).
	 */
	FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) {
		if (cpr->pr_securelevel < level)
			cpr->pr_securelevel = level;
	}
	mtx_unlock(&pr->pr_mtx);
	sx_sunlock(&allprison_lock);
	return (error);
}

SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
    CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl,
    "I", "Current secure level");

#ifdef INCLUDE_CONFIG_FILE
/* Actual kernel configuration options. */
extern char kernconfstring[];

static int
sysctl_kern_config(SYSCTL_HANDLER_ARGS)
{
	return (sysctl_handle_string(oidp, kernconfstring,
	    strlen(kernconfstring), req));
}

SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW, 
    0, 0, sysctl_kern_config, "", "Kernel configuration file");
#endif

static int
sysctl_hostid(SYSCTL_HANDLER_ARGS)
{
	struct prison *pr, *cpr;
	u_long tmpid;
	int descend, error;

	/*
	 * Like sysctl_hostname, except it operates on a u_long
	 * instead of a string, and is used only for hostid.
	 */
	pr = req->td->td_ucred->cr_prison;
	if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr)
		return (EPERM);
	tmpid = pr->pr_hostid;
	error = sysctl_handle_long(oidp, &tmpid, 0, req);

	if (req->newptr != NULL && error == 0) {
		sx_slock(&allprison_lock);
		while (!(pr->pr_flags & PR_HOST))
			pr = pr->pr_parent;
		mtx_lock(&pr->pr_mtx);
		pr->pr_hostid = tmpid;
		FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend)
			if (cpr->pr_flags & PR_HOST)
				descend = 0;
			else
				cpr->pr_hostid = tmpid;
		mtx_unlock(&pr->pr_mtx);
		sx_sunlock(&allprison_lock);
	}
	return (error);
}

SYSCTL_PROC(_kern, KERN_HOSTID, hostid,
    CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
    NULL, 0, sysctl_hostid, "LU", "Host ID");

SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");

#ifdef COMPAT_FREEBSD4
FEATURE(compat_freebsd4, "Compatible with FreeBSD 4");
#endif

#ifdef COMPAT_FREEBSD5
FEATURE(compat_freebsd5, "Compatible with FreeBSD 5");
#endif

#ifdef COMPAT_FREEBSD6
FEATURE(compat_freebsd6, "Compatible with FreeBSD 6");
#endif

#ifdef COMPAT_FREEBSD7
FEATURE(compat_freebsd7, "Compatible with FreeBSD 7");
#endif

/*
 * This is really cheating.  These actually live in the libc, something
 * which I'm not quite sure is a good idea anyway, but in order for
 * getnext and friends to actually work, we define dummies here.
 */
SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
    "", 0, "PATH that finds all the standard utilities");
SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
    0, 0, "Max ibase/obase values in bc(1)");
SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
    0, 0, "Max array size in bc(1)");
SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
    0, 0, "Max scale value in bc(1)");
SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
    0, 0, "Max string length in bc(1)");
SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
    0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
    0, 0, "Max length (bytes) of a text-processing utility's input line");
SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
    0, 0, "Maximum number of repeats of a regexp permitted");
SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
    0, 0,
    "The version of POSIX 1003.2 with which the system attempts to comply");
SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
    0, 0, "Whether C development supports the C bindings option");
SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
    0, 0, "Whether system supports the C development utilities option");
SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
    0, 0, "");
SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
    0, 0, "Whether system supports FORTRAN development utilities");
SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
    0, 0, "Whether system supports FORTRAN runtime utilities");
SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
    0, 0, "Whether system supports creation of locales");
SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
    0, 0, "Whether system supports software development utilities");
SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
    0, 0, "Whether system supports the user portability utilities");
SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
    0, 0, "Min Maximum number of streams a process may have open at one time");
SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
    0, 0, "Min Maximum number of types supported for timezone names");

#include <sys/vnode.h>
SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
    0, sizeof(struct vnode), "sizeof(struct vnode)");

SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
    0, sizeof(struct proc), "sizeof(struct proc)");

#include <sys/bio.h>
#include <sys/buf.h>
SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD,
    0, sizeof(struct bio), "sizeof(struct bio)");
SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD,
    0, sizeof(struct buf), "sizeof(struct buf)");

#include <sys/user.h>
SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
    0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");

/* XXX compatibility, remove for 6.0 */
#include <sys/imgact.h>
#include <sys/imgact_elf.h>
SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW,
    &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)),
    "compatibility for kern.fallback_elf_brand");
OpenPOWER on IntegriCloud