Initial import from FreeBSD RELENG_4:
[dragonfly.git] / sys / kern / kern_mib.c
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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 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94
40 * $FreeBSD: src/sys/kern/kern_mib.c,v 1.29.2.4 2001/07/30 23:28:00 peter Exp $
41 */
42
43#include <sys/param.h>
44#include <sys/kernel.h>
45#include <sys/systm.h>
46#include <sys/sysctl.h>
47#include <sys/proc.h>
48#include <sys/jail.h>
49#include <machine/smp.h>
50
51SYSCTL_NODE(, 0, sysctl, CTLFLAG_RW, 0,
52 "Sysctl internal magic");
53SYSCTL_NODE(, CTL_KERN, kern, CTLFLAG_RW, 0,
54 "High kernel, proc, limits &c");
55SYSCTL_NODE(, CTL_VM, vm, CTLFLAG_RW, 0,
56 "Virtual memory");
57SYSCTL_NODE(, CTL_VFS, vfs, CTLFLAG_RW, 0,
58 "File system");
59SYSCTL_NODE(, CTL_NET, net, CTLFLAG_RW, 0,
60 "Network, (see socket.h)");
61SYSCTL_NODE(, CTL_DEBUG, debug, CTLFLAG_RW, 0,
62 "Debugging");
63SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW, 0,
64 "Sizeof various things");
65SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW, 0,
66 "hardware");
67SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
68 "machine dependent");
69SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW, 0,
70 "user-level");
71SYSCTL_NODE(, CTL_P1003_1B, p1003_1b, CTLFLAG_RW, 0,
72 "p1003_1b, (see p1003_1b.h)");
73
74SYSCTL_NODE(, OID_AUTO, compat, CTLFLAG_RW, 0,
75 "Compatibility code");
76
77SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD,
78 osrelease, 0, "Operating system type");
79
80SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD,
81 0, BSD, "Operating system revision");
82
83SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD,
84 version, 0, "Kernel version");
85
86SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD,
87 ostype, 0, "Operating system type");
88
89extern int osreldate;
90SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD,
91 &osreldate, 0, "Operating system release date");
92
93SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD,
94 &maxproc, 0, "Maximum number of processes");
95
96SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW,
97 &maxprocperuid, 0, "Maximum processes allowed per userid");
98
99SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RD,
100 &maxusers, 0, "Hint for kernel tuning");
101
102SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD,
103 0, ARG_MAX, "Maximum bytes of argument to execve(2)");
104
105SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD,
106 0, _KPOSIX_VERSION, "Version of POSIX attempting to comply to");
107
108SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD,
109 0, NGROUPS_MAX, "Maximum number of groups a user can belong to");
110
111SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD,
112 0, 1, "Whether job control is available");
113
114#ifdef _POSIX_SAVED_IDS
115SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
116 0, 1, "Whether saved set-group/user ID is available");
117#else
118SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD,
119 0, 0, "Whether saved set-group/user ID is available");
120#endif
121
122char kernelname[MAXPATHLEN] = "/kernel"; /* XXX bloat */
123
124SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW,
125 kernelname, sizeof kernelname, "Name of kernel file booted");
126
127#ifdef SMP
128SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD,
129 &mp_ncpus, 0, "Number of active CPUs");
130#else
131SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD,
132 0, 1, "Number of active CPUs");
133#endif
134
135SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD,
136 0, BYTE_ORDER, "System byte order");
137
138SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD,
139 0, PAGE_SIZE, "System memory page size");
140
141static char machine_arch[] = MACHINE_ARCH;
142SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
143 machine_arch, 0, "System architecture");
144
145char hostname[MAXHOSTNAMELEN];
146
147static int
148sysctl_hostname(SYSCTL_HANDLER_ARGS)
149{
150 int error;
151
152 if (req->p->p_prison) {
153 if (!jail_set_hostname_allowed && req->newptr)
154 return(EPERM);
155 error = sysctl_handle_string(oidp,
156 req->p->p_prison->pr_host,
157 sizeof req->p->p_prison->pr_host, req);
158 } else
159 error = sysctl_handle_string(oidp,
160 hostname, sizeof hostname, req);
161 return (error);
162}
163
164SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname,
165 CTLTYPE_STRING|CTLFLAG_RW|CTLFLAG_PRISON,
166 0, 0, sysctl_hostname, "A", "Hostname");
167
168int securelevel = -1;
169
170static int
171sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS)
172{
173 int error, level;
174
175 level = securelevel;
176 error = sysctl_handle_int(oidp, &level, 0, req);
177 if (error || !req->newptr)
178 return (error);
179 if (level < securelevel)
180 return (EPERM);
181 securelevel = level;
182 return (error);
183}
184
185SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT|CTLFLAG_RW,
186 0, 0, sysctl_kern_securelvl, "I", "Current secure level");
187
188char domainname[MAXHOSTNAMELEN];
189SYSCTL_STRING(_kern, KERN_NISDOMAINNAME, domainname, CTLFLAG_RW,
190 &domainname, sizeof(domainname), "Name of the current YP/NIS domain");
191
192unsigned long hostid;
193SYSCTL_ULONG(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "Host ID");
194
195/*
196 * This is really cheating. These actually live in the libc, something
197 * which I'm not quite sure is a good idea anyway, but in order for
198 * getnext and friends to actually work, we define dummies here.
199 */
200SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD,
201 "", 0, "PATH that finds all the standard utilities");
202SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD,
203 0, 0, "Max ibase/obase values in bc(1)");
204SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD,
205 0, 0, "Max array size in bc(1)");
206SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD,
207 0, 0, "Max scale value in bc(1)");
208SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD,
209 0, 0, "Max string length in bc(1)");
210SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD,
211 0, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry");
212SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
213SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD,
214 0, 0, "Max length (bytes) of a text-processing utility's input line");
215SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD,
216 0, 0, "Maximum number of repeats of a regexp permitted");
217SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD,
218 0, 0,
219 "The version of POSIX 1003.2 with which the system attempts to comply");
220SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD,
221 0, 0, "Whether C development supports the C bindings option");
222SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD,
223 0, 0, "Whether system supports the C development utilities option");
224SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD,
225 0, 0, "");
226SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD,
227 0, 0, "Whether system supports FORTRAN development utilities");
228SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD,
229 0, 0, "Whether system supports FORTRAN runtime utilities");
230SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD,
231 0, 0, "Whether system supports creation of locales");
232SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD,
233 0, 0, "Whether system supports software development utilities");
234SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD,
235 0, 0, "Whether system supports the user portability utilities");
236SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD,
237 0, 0, "Min Maximum number of streams a process may have open at one time");
238SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD,
239 0, 0, "Min Maximum number of types supported for timezone names");
240
241#include <sys/vnode.h>
242SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD,
243 0, sizeof(struct vnode), "sizeof(struct vnode)");
244
245SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD,
246 0, sizeof(struct proc), "sizeof(struct proc)");
247
248#include <sys/conf.h>
249SYSCTL_INT(_debug_sizeof, OID_AUTO, specinfo, CTLFLAG_RD,
250 0, sizeof(struct specinfo), "sizeof(struct specinfo)");