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>
| 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 183550 2008-10-02 15:37:58Z zec $");
| 39__FBSDID("$FreeBSD: head/sys/kern/kern_mib.c 187864 2009-01-28 19:58:05Z ed $");
|
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/unistd.h>
56#include <sys/vimage.h>
57
58SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0,
59 "Sysctl internal magic");
60SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 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
| 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/unistd.h>
56#include <sys/vimage.h>
57
58SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0,
59 "Sysctl internal magic");
60SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 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,
| 90SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE,
|
91 kern_ident, 0, "Kernel identifier");
92
| 91 kern_ident, 0, "Kernel identifier");
92
|
93SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD,
| 93SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD|CTLFLAG_MPSAFE,
|
94 osrelease, 0, "Operating system release");
95
96SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD,
97 0, BSD, "Operating system revision");
98
| 94 osrelease, 0, "Operating system release");
95
96SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD,
97 0, BSD, "Operating system revision");
98
|
99SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD,
| 99SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE,
|
100 version, 0, "Kernel version");
101
| 100 version, 0, "Kernel version");
101
|
102SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD,
| 102SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE,
|
103 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,
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,
122 0, ARG_MAX, "Maximum bytes of argument to execve(2)");
123
124SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD,
125 0, _POSIX_VERSION, "Version of POSIX attempting to comply to");
126
127SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD,
128 0, NGROUPS_MAX, "Maximum number of groups a user can belong to");
129
130SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD,
131 0, 1, "Whether job control is available");
132
133#ifdef _POSIX_SAVED_IDS
134SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
135 0, 1, "Whether saved set-group/user ID is available");
136#else
137SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
138 0, 0, "Whether saved set-group/user ID is available");
139#endif
140
141char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */
142
143SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
144 kernelname, sizeof kernelname, "Name of kernel file booted");
145
146SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD,
147 &mp_ncpus, 0, "Number of active CPUs");
148
149SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD,
150 0, BYTE_ORDER, "System byte order");
151
152SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD,
153 0, PAGE_SIZE, "System memory page size");
154
155static int
156sysctl_kern_arnd(SYSCTL_HANDLER_ARGS)
157{
158 char buf[256];
159 size_t len;
160
161 len = req->oldlen;
162 if (len > sizeof(buf))
163 len = sizeof(buf);
164 arc4rand(buf, len, 0);
165 return (SYSCTL_OUT(req, buf, len));
166}
167
| 103 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,
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,
122 0, ARG_MAX, "Maximum bytes of argument to execve(2)");
123
124SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD,
125 0, _POSIX_VERSION, "Version of POSIX attempting to comply to");
126
127SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD,
128 0, NGROUPS_MAX, "Maximum number of groups a user can belong to");
129
130SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD,
131 0, 1, "Whether job control is available");
132
133#ifdef _POSIX_SAVED_IDS
134SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
135 0, 1, "Whether saved set-group/user ID is available");
136#else
137SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
138 0, 0, "Whether saved set-group/user ID is available");
139#endif
140
141char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */
142
143SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
144 kernelname, sizeof kernelname, "Name of kernel file booted");
145
146SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD,
147 &mp_ncpus, 0, "Number of active CPUs");
148
149SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD,
150 0, BYTE_ORDER, "System byte order");
151
152SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD,
153 0, PAGE_SIZE, "System memory page size");
154
155static int
156sysctl_kern_arnd(SYSCTL_HANDLER_ARGS)
157{
158 char buf[256];
159 size_t len;
160
161 len = req->oldlen;
162 if (len > sizeof(buf))
163 len = sizeof(buf);
164 arc4rand(buf, len, 0);
165 return (SYSCTL_OUT(req, buf, len));
166}
167
|
168SYSCTL_PROC(_kern, KERN_ARND, arandom, CTLTYPE_OPAQUE | CTLFLAG_RD,
169 NULL, 0, sysctl_kern_arnd, "", "arc4rand");
| 168SYSCTL_PROC(_kern, KERN_ARND, arandom,
169 CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0,
170 sysctl_kern_arnd, "", "arc4rand");
|
170
171static int
172sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
173{
174 u_long val;
175
176 val = ctob(physmem);
177 return (sysctl_handle_long(oidp, &val, 0, req));
178}
179
180SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD,
181 0, 0, sysctl_hw_physmem, "LU", "");
182
183static int
184sysctl_hw_realmem(SYSCTL_HANDLER_ARGS)
185{
186 u_long val;
187 val = ctob(realmem);
188 return (sysctl_handle_long(oidp, &val, 0, req));
189}
190SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD,
191 0, 0, sysctl_hw_realmem, "LU", "");
192static int
193sysctl_hw_usermem(SYSCTL_HANDLER_ARGS)
194{
195 u_long val;
196
197 val = ctob(physmem - cnt.v_wire_count);
198 return (sysctl_handle_long(oidp, &val, 0, req));
199}
200
201SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD,
202 0, 0, sysctl_hw_usermem, "LU", "");
203
204SYSCTL_ULONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");
205
206static char machine_arch[] = MACHINE_ARCH;
207SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
208 machine_arch, 0, "System architecture");
209
210#ifndef VIMAGE
211char hostname[MAXHOSTNAMELEN];
212#endif
213
214/*
215 * This mutex is used to protect the hostname and domainname variables, and
216 * perhaps in the future should also protect hostid, hostuid, and others.
217 */
218struct mtx hostname_mtx;
219MTX_SYSINIT(hostname_mtx, &hostname_mtx, "hostname", MTX_DEF);
220
221static int
222sysctl_hostname(SYSCTL_HANDLER_ARGS)
223{
224 INIT_VPROCG(TD_TO_VPROCG(req->td));
225 struct prison *pr;
226 char tmphostname[MAXHOSTNAMELEN];
227 int error;
228
229 pr = req->td->td_ucred->cr_prison;
230 if (pr != NULL) {
231 if (!jail_set_hostname_allowed && req->newptr)
232 return (EPERM);
233 /*
234 * Process is in jail, so make a local copy of jail
235 * hostname to get/set so we don't have to hold the jail
236 * mutex during the sysctl copyin/copyout activities.
237 */
238 mtx_lock(&pr->pr_mtx);
239 bcopy(pr->pr_host, tmphostname, MAXHOSTNAMELEN);
240 mtx_unlock(&pr->pr_mtx);
241
242 error = sysctl_handle_string(oidp, tmphostname,
243 sizeof pr->pr_host, req);
244
245 if (req->newptr != NULL && error == 0) {
246 /*
247 * Copy the locally set hostname to the jail, if
248 * appropriate.
249 */
250 mtx_lock(&pr->pr_mtx);
251 bcopy(tmphostname, pr->pr_host, MAXHOSTNAMELEN);
252 mtx_unlock(&pr->pr_mtx);
253 }
254 } else {
255 mtx_lock(&hostname_mtx);
256 bcopy(V_hostname, tmphostname, MAXHOSTNAMELEN);
257 mtx_unlock(&hostname_mtx);
258 error = sysctl_handle_string(oidp, tmphostname,
259 sizeof tmphostname, req);
260 if (req->newptr != NULL && error == 0) {
261 mtx_lock(&hostname_mtx);
262 bcopy(tmphostname, V_hostname, MAXHOSTNAMELEN);
263 mtx_unlock(&hostname_mtx);
264 }
265 }
266 return (error);
267}
268
269SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
| 171
172static int
173sysctl_hw_physmem(SYSCTL_HANDLER_ARGS)
174{
175 u_long val;
176
177 val = ctob(physmem);
178 return (sysctl_handle_long(oidp, &val, 0, req));
179}
180
181SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD,
182 0, 0, sysctl_hw_physmem, "LU", "");
183
184static int
185sysctl_hw_realmem(SYSCTL_HANDLER_ARGS)
186{
187 u_long val;
188 val = ctob(realmem);
189 return (sysctl_handle_long(oidp, &val, 0, req));
190}
191SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD,
192 0, 0, sysctl_hw_realmem, "LU", "");
193static int
194sysctl_hw_usermem(SYSCTL_HANDLER_ARGS)
195{
196 u_long val;
197
198 val = ctob(physmem - cnt.v_wire_count);
199 return (sysctl_handle_long(oidp, &val, 0, req));
200}
201
202SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD,
203 0, 0, sysctl_hw_usermem, "LU", "");
204
205SYSCTL_ULONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "");
206
207static char machine_arch[] = MACHINE_ARCH;
208SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
209 machine_arch, 0, "System architecture");
210
211#ifndef VIMAGE
212char hostname[MAXHOSTNAMELEN];
213#endif
214
215/*
216 * This mutex is used to protect the hostname and domainname variables, and
217 * perhaps in the future should also protect hostid, hostuid, and others.
218 */
219struct mtx hostname_mtx;
220MTX_SYSINIT(hostname_mtx, &hostname_mtx, "hostname", MTX_DEF);
221
222static int
223sysctl_hostname(SYSCTL_HANDLER_ARGS)
224{
225 INIT_VPROCG(TD_TO_VPROCG(req->td));
226 struct prison *pr;
227 char tmphostname[MAXHOSTNAMELEN];
228 int error;
229
230 pr = req->td->td_ucred->cr_prison;
231 if (pr != NULL) {
232 if (!jail_set_hostname_allowed && req->newptr)
233 return (EPERM);
234 /*
235 * Process is in jail, so make a local copy of jail
236 * hostname to get/set so we don't have to hold the jail
237 * mutex during the sysctl copyin/copyout activities.
238 */
239 mtx_lock(&pr->pr_mtx);
240 bcopy(pr->pr_host, tmphostname, MAXHOSTNAMELEN);
241 mtx_unlock(&pr->pr_mtx);
242
243 error = sysctl_handle_string(oidp, tmphostname,
244 sizeof pr->pr_host, req);
245
246 if (req->newptr != NULL && error == 0) {
247 /*
248 * Copy the locally set hostname to the jail, if
249 * appropriate.
250 */
251 mtx_lock(&pr->pr_mtx);
252 bcopy(tmphostname, pr->pr_host, MAXHOSTNAMELEN);
253 mtx_unlock(&pr->pr_mtx);
254 }
255 } else {
256 mtx_lock(&hostname_mtx);
257 bcopy(V_hostname, tmphostname, MAXHOSTNAMELEN);
258 mtx_unlock(&hostname_mtx);
259 error = sysctl_handle_string(oidp, tmphostname,
260 sizeof tmphostname, req);
261 if (req->newptr != NULL && error == 0) {
262 mtx_lock(&hostname_mtx);
263 bcopy(tmphostname, V_hostname, MAXHOSTNAMELEN);
264 mtx_unlock(&hostname_mtx);
265 }
266 }
267 return (error);
268}
269
270SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
|
270 CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_PRISON,
| 271 CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_PRISON|CTLFLAG_MPSAFE,
|
271 0, 0, sysctl_hostname, "A", "Hostname");
272
273static int regression_securelevel_nonmonotonic = 0;
274
275#ifdef REGRESSION
276SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW,
277 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered");
278#endif
279
280int securelevel = -1;
281static struct mtx securelevel_mtx;
282
283MTX_SYSINIT(securelevel_lock, &securelevel_mtx, "securelevel mutex lock",
284 MTX_DEF);
285
286static int
287sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
288{
289 struct prison *pr;
290 int error, level;
291
292 pr = req->td->td_ucred->cr_prison;
293
294 /*
295 * If the process is in jail, return the maximum of the global and
296 * local levels; otherwise, return the global level. Perform a
297 * lockless read since the securelevel is an integer.
298 */
299 if (pr != NULL)
300 level = imax(securelevel, pr->pr_securelevel);
301 else
302 level = securelevel;
303 error = sysctl_handle_int(oidp, &level, 0, req);
304 if (error || !req->newptr)
305 return (error);
306 /*
307 * Permit update only if the new securelevel exceeds the
308 * global level, and local level if any.
309 */
310 if (pr != NULL) {
311 mtx_lock(&pr->pr_mtx);
312 if (!regression_securelevel_nonmonotonic &&
313 (level < imax(securelevel, pr->pr_securelevel))) {
314 mtx_unlock(&pr->pr_mtx);
315 return (EPERM);
316 }
317 pr->pr_securelevel = level;
318 mtx_unlock(&pr->pr_mtx);
319 } else {
320 mtx_lock(&securelevel_mtx);
321 if (!regression_securelevel_nonmonotonic &&
322 (level < securelevel)) {
323 mtx_unlock(&securelevel_mtx);
324 return (EPERM);
325 }
326 securelevel = level;
327 mtx_unlock(&securelevel_mtx);
328 }
329 return (error);
330}
331
332SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
333 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl,
334 "I", "Current secure level");
335
336#ifdef INCLUDE_CONFIG_FILE
337/* Actual kernel configuration options. */
338extern char kernconfstring[];
339
340static int
341sysctl_kern_config(SYSCTL_HANDLER_ARGS)
342{
343 return (sysctl_handle_string(oidp, kernconfstring,
344 strlen(kernconfstring), req));
345}
346
347SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW,
348 0, 0, sysctl_kern_config, "", "Kernel configuration file");
349#endif
350
351#ifndef VIMAGE
352char domainname[MAXHOSTNAMELEN]; /* Protected by hostname_mtx. */
353#endif
354
355static int
356sysctl_domainname(SYSCTL_HANDLER_ARGS)
357{
358 char tmpdomainname[MAXHOSTNAMELEN];
359 int error;
360
361 mtx_lock(&hostname_mtx);
362 bcopy(V_domainname, tmpdomainname, MAXHOSTNAMELEN);
363 mtx_unlock(&hostname_mtx);
364 error = sysctl_handle_string(oidp, tmpdomainname,
365 sizeof tmpdomainname, req);
366 if (req->newptr != NULL && error == 0) {
367 mtx_lock(&hostname_mtx);
368 bcopy(tmpdomainname, V_domainname, MAXHOSTNAMELEN);
369 mtx_unlock(&hostname_mtx);
370 }
371 return (error);
372}
373
374SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, CTLTYPE_STRING|CTLFLAG_RW,
375 0, 0, sysctl_domainname, "A", "Name of the current YP/NIS domain");
376
377u_long hostid;
378SYSCTL_ULONG(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "Host ID");
379char hostuuid[64] = "00000000-0000-0000-0000-000000000000";
380SYSCTL_STRING(_kern, KERN_HOSTUUID, hostuuid, CTLFLAG_RW, hostuuid,
381 sizeof(hostuuid), "Host UUID");
382
383SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");
384
385#ifdef COMPAT_FREEBSD4
386FEATURE(compat_freebsd4, "Compatible with FreeBSD 4");
387#endif
388
389#ifdef COMPAT_FREEBSD5
390FEATURE(compat_freebsd5, "Compatible with FreeBSD 5");
391#endif
392
393#ifdef COMPAT_FREEBSD6
394FEATURE(compat_freebsd6, "Compatible with FreeBSD 6");
395#endif
396
397#ifdef COMPAT_FREEBSD7
398FEATURE(compat_freebsd7, "Compatible with FreeBSD 7");
399#endif
400
401/*
402 * This is really cheating. These actually live in the libc, something
403 * which I'm not quite sure is a good idea anyway, but in order for
404 * getnext and friends to actually work, we define dummies here.
405 */
406SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
407 "", 0, "PATH that finds all the standard utilities");
408SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
409 0, 0, "Max ibase/obase values in bc(1)");
410SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
411 0, 0, "Max array size in bc(1)");
412SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
413 0, 0, "Max scale value in bc(1)");
414SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
415 0, 0, "Max string length in bc(1)");
416SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
417 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
418SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
419SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
420 0, 0, "Max length (bytes) of a text-processing utility's input line");
421SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
422 0, 0, "Maximum number of repeats of a regexp permitted");
423SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
424 0, 0,
425 "The version of POSIX 1003.2 with which the system attempts to comply");
426SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
427 0, 0, "Whether C development supports the C bindings option");
428SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
429 0, 0, "Whether system supports the C development utilities option");
430SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
431 0, 0, "");
432SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
433 0, 0, "Whether system supports FORTRAN development utilities");
434SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
435 0, 0, "Whether system supports FORTRAN runtime utilities");
436SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
437 0, 0, "Whether system supports creation of locales");
438SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
439 0, 0, "Whether system supports software development utilities");
440SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
441 0, 0, "Whether system supports the user portability utilities");
442SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
443 0, 0, "Min Maximum number of streams a process may have open at one time");
444SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
445 0, 0, "Min Maximum number of types supported for timezone names");
446
447#include <sys/vnode.h>
448SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
449 0, sizeof(struct vnode), "sizeof(struct vnode)");
450
451SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
452 0, sizeof(struct proc), "sizeof(struct proc)");
453
454#include <sys/bio.h>
455#include <sys/buf.h>
456SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD,
457 0, sizeof(struct bio), "sizeof(struct bio)");
458SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD,
459 0, sizeof(struct buf), "sizeof(struct buf)");
460
461#include <sys/user.h>
462SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
463 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");
464
465/* XXX compatibility, remove for 6.0 */
466#include <sys/imgact.h>
467#include <sys/imgact_elf.h>
468SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW,
469 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)),
470 "compatibility for kern.fallback_elf_brand");
| 272 0, 0, sysctl_hostname, "A", "Hostname");
273
274static int regression_securelevel_nonmonotonic = 0;
275
276#ifdef REGRESSION
277SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW,
278 ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered");
279#endif
280
281int securelevel = -1;
282static struct mtx securelevel_mtx;
283
284MTX_SYSINIT(securelevel_lock, &securelevel_mtx, "securelevel mutex lock",
285 MTX_DEF);
286
287static int
288sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
289{
290 struct prison *pr;
291 int error, level;
292
293 pr = req->td->td_ucred->cr_prison;
294
295 /*
296 * If the process is in jail, return the maximum of the global and
297 * local levels; otherwise, return the global level. Perform a
298 * lockless read since the securelevel is an integer.
299 */
300 if (pr != NULL)
301 level = imax(securelevel, pr->pr_securelevel);
302 else
303 level = securelevel;
304 error = sysctl_handle_int(oidp, &level, 0, req);
305 if (error || !req->newptr)
306 return (error);
307 /*
308 * Permit update only if the new securelevel exceeds the
309 * global level, and local level if any.
310 */
311 if (pr != NULL) {
312 mtx_lock(&pr->pr_mtx);
313 if (!regression_securelevel_nonmonotonic &&
314 (level < imax(securelevel, pr->pr_securelevel))) {
315 mtx_unlock(&pr->pr_mtx);
316 return (EPERM);
317 }
318 pr->pr_securelevel = level;
319 mtx_unlock(&pr->pr_mtx);
320 } else {
321 mtx_lock(&securelevel_mtx);
322 if (!regression_securelevel_nonmonotonic &&
323 (level < securelevel)) {
324 mtx_unlock(&securelevel_mtx);
325 return (EPERM);
326 }
327 securelevel = level;
328 mtx_unlock(&securelevel_mtx);
329 }
330 return (error);
331}
332
333SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel,
334 CTLTYPE_INT|CTLFLAG_RW|CTLFLAG_PRISON, 0, 0, sysctl_kern_securelvl,
335 "I", "Current secure level");
336
337#ifdef INCLUDE_CONFIG_FILE
338/* Actual kernel configuration options. */
339extern char kernconfstring[];
340
341static int
342sysctl_kern_config(SYSCTL_HANDLER_ARGS)
343{
344 return (sysctl_handle_string(oidp, kernconfstring,
345 strlen(kernconfstring), req));
346}
347
348SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW,
349 0, 0, sysctl_kern_config, "", "Kernel configuration file");
350#endif
351
352#ifndef VIMAGE
353char domainname[MAXHOSTNAMELEN]; /* Protected by hostname_mtx. */
354#endif
355
356static int
357sysctl_domainname(SYSCTL_HANDLER_ARGS)
358{
359 char tmpdomainname[MAXHOSTNAMELEN];
360 int error;
361
362 mtx_lock(&hostname_mtx);
363 bcopy(V_domainname, tmpdomainname, MAXHOSTNAMELEN);
364 mtx_unlock(&hostname_mtx);
365 error = sysctl_handle_string(oidp, tmpdomainname,
366 sizeof tmpdomainname, req);
367 if (req->newptr != NULL && error == 0) {
368 mtx_lock(&hostname_mtx);
369 bcopy(tmpdomainname, V_domainname, MAXHOSTNAMELEN);
370 mtx_unlock(&hostname_mtx);
371 }
372 return (error);
373}
374
375SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, CTLTYPE_STRING|CTLFLAG_RW,
376 0, 0, sysctl_domainname, "A", "Name of the current YP/NIS domain");
377
378u_long hostid;
379SYSCTL_ULONG(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "Host ID");
380char hostuuid[64] = "00000000-0000-0000-0000-000000000000";
381SYSCTL_STRING(_kern, KERN_HOSTUUID, hostuuid, CTLFLAG_RW, hostuuid,
382 sizeof(hostuuid), "Host UUID");
383
384SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD, 0, "Kernel Features");
385
386#ifdef COMPAT_FREEBSD4
387FEATURE(compat_freebsd4, "Compatible with FreeBSD 4");
388#endif
389
390#ifdef COMPAT_FREEBSD5
391FEATURE(compat_freebsd5, "Compatible with FreeBSD 5");
392#endif
393
394#ifdef COMPAT_FREEBSD6
395FEATURE(compat_freebsd6, "Compatible with FreeBSD 6");
396#endif
397
398#ifdef COMPAT_FREEBSD7
399FEATURE(compat_freebsd7, "Compatible with FreeBSD 7");
400#endif
401
402/*
403 * This is really cheating. These actually live in the libc, something
404 * which I'm not quite sure is a good idea anyway, but in order for
405 * getnext and friends to actually work, we define dummies here.
406 */
407SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
408 "", 0, "PATH that finds all the standard utilities");
409SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
410 0, 0, "Max ibase/obase values in bc(1)");
411SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
412 0, 0, "Max array size in bc(1)");
413SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
414 0, 0, "Max scale value in bc(1)");
415SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
416 0, 0, "Max string length in bc(1)");
417SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
418 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
419SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
420SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
421 0, 0, "Max length (bytes) of a text-processing utility's input line");
422SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
423 0, 0, "Maximum number of repeats of a regexp permitted");
424SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
425 0, 0,
426 "The version of POSIX 1003.2 with which the system attempts to comply");
427SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
428 0, 0, "Whether C development supports the C bindings option");
429SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
430 0, 0, "Whether system supports the C development utilities option");
431SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
432 0, 0, "");
433SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
434 0, 0, "Whether system supports FORTRAN development utilities");
435SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
436 0, 0, "Whether system supports FORTRAN runtime utilities");
437SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
438 0, 0, "Whether system supports creation of locales");
439SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
440 0, 0, "Whether system supports software development utilities");
441SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
442 0, 0, "Whether system supports the user portability utilities");
443SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
444 0, 0, "Min Maximum number of streams a process may have open at one time");
445SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
446 0, 0, "Min Maximum number of types supported for timezone names");
447
448#include <sys/vnode.h>
449SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
450 0, sizeof(struct vnode), "sizeof(struct vnode)");
451
452SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
453 0, sizeof(struct proc), "sizeof(struct proc)");
454
455#include <sys/bio.h>
456#include <sys/buf.h>
457SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD,
458 0, sizeof(struct bio), "sizeof(struct bio)");
459SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD,
460 0, sizeof(struct buf), "sizeof(struct buf)");
461
462#include <sys/user.h>
463SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
464 0, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");
465
466/* XXX compatibility, remove for 6.0 */
467#include <sys/imgact.h>
468#include <sys/imgact_elf.h>
469SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW,
470 &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)),
471 "compatibility for kern.fallback_elf_brand");
|