kern_xxx.c revision 12222 
1/*
2 * Copyright (c) 1982, 1986, 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 *	@(#)kern_xxx.c	8.2 (Berkeley) 11/14/93
34 * $Id: kern_xxx.c,v 1.17 1995/11/12 06:43:03 bde Exp $
35 */
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/sysproto.h>
40#include <sys/kernel.h>
41#include <sys/proc.h>
42#include <sys/reboot.h>
43#include <vm/vm.h>
44#include <sys/sysctl.h>
45#include <sys/utsname.h>
46#include <sys/signalvar.h>
47
48/* This implements a "TEXT_SET" for cleanup functions */
49
50static void
51dummy_cleanup() {}
52TEXT_SET(cleanup_set, dummy_cleanup);
53
54typedef void (*cleanup_func_t)(void);
55extern const struct linker_set cleanup_set;
56static const cleanup_func_t *cleanups =
57        (const cleanup_func_t *)&cleanup_set.ls_items[0];
58
59#ifndef _SYS_SYSPROTO_H_
60struct reboot_args {
61	int	opt;
62};
63#endif
64/* ARGSUSED */
65int
66reboot(p, uap, retval)
67	struct proc *p;
68	struct reboot_args *uap;
69	int *retval;
70{
71	int error;
72
73	if ((error = suser(p->p_ucred, &p->p_acflag)))
74		return (error);
75
76	if (!uap->opt & RB_NOSYNC) {
77		printf("\ncleaning up... ");
78                while(*cleanups) {
79                        (**cleanups++)();
80                }
81	}
82
83	boot(uap->opt);
84	return (0);
85}
86
87#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
88
89#ifndef _SYS_SYSPROTO_H_
90struct gethostname_args {
91	char	*hostname;
92	u_int	len;
93};
94#endif
95/* ARGSUSED */
96int
97ogethostname(p, uap, retval)
98	struct proc *p;
99	struct gethostname_args *uap;
100	int *retval;
101{
102	int name[2];
103
104	name[0] = CTL_KERN;
105	name[1] = KERN_HOSTNAME;
106	return (userland_sysctl(p, name, 2, uap->hostname, &uap->len,
107		1, 0, 0, 0));
108}
109
110#ifndef _SYS_SYSPROTO_H_
111struct sethostname_args {
112	char	*hostname;
113	u_int	len;
114};
115#endif
116/* ARGSUSED */
117int
118osethostname(p, uap, retval)
119	struct proc *p;
120	register struct sethostname_args *uap;
121	int *retval;
122{
123	int name[2];
124	int error;
125
126	name[0] = CTL_KERN;
127	name[1] = KERN_HOSTNAME;
128	if ((error = suser(p->p_ucred, &p->p_acflag)))
129		return (error);
130	return (userland_sysctl(p, name, 2, 0, 0, 0,
131		uap->hostname, uap->len, 0));
132}
133
134#ifndef _SYS_SYSPROTO_H_
135struct ogethostid_args {
136	int	dummy;
137};
138#endif
139/* ARGSUSED */
140int
141ogethostid(p, uap, retval)
142	struct proc *p;
143	struct ogethostid_args *uap;
144	int *retval;
145{
146
147	*(long *)retval = hostid;
148	return (0);
149}
150#endif /* COMPAT_43 || COMPAT_SUNOS */
151
152#ifdef COMPAT_43
153#ifndef _SYS_SYSPROTO_H_
154struct osethostid_args {
155	long	hostid;
156};
157#endif
158/* ARGSUSED */
159int
160osethostid(p, uap, retval)
161	struct proc *p;
162	struct osethostid_args *uap;
163	int *retval;
164{
165	int error;
166
167	if ((error = suser(p->p_ucred, &p->p_acflag)))
168		return (error);
169	hostid = uap->hostid;
170	return (0);
171}
172
173int
174oquota(p, uap, retval)
175	struct proc *p;
176	struct oquota_args *uap;
177	int *retval;
178{
179
180	return (ENOSYS);
181}
182#endif /* COMPAT_43 */
183
184void
185shutdown_nice(void)
186{
187	/* Send a signal to init(8) and have it shutdown the world */
188	if (initproc != NULL) {
189		psignal(initproc, SIGINT);
190	} else {
191		/* No init(8) running, so simply reboot */
192		boot(RB_NOSYNC);
193	}
194	return;
195}
196
197
198#ifndef _SYS_SYSPROTO_H_
199struct uname_args {
200        struct utsname  *name;
201};
202#endif
203
204/* ARGSUSED */
205int
206uname(p, uap, retval)
207	struct proc *p;
208	struct uname_args *uap;
209	int *retval;
210{
211	int name[2], len, rtval, junk;
212	char *s, *us;
213
214	name[0] = CTL_KERN;
215	name[1] = KERN_OSTYPE;
216	len = sizeof uap->name->sysname;
217	rtval = userland_sysctl(p, name, 2, uap->name->sysname, &len,
218		1, 0, 0, 0);
219	if( rtval) return rtval;
220	subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
221
222	name[1] = KERN_HOSTNAME;
223	len = sizeof uap->name->nodename;
224	rtval = userland_sysctl(p, name, 2, uap->name->nodename, &len,
225		1, 0, 0, 0);
226	if( rtval) return rtval;
227	subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
228
229	name[1] = KERN_OSRELEASE;
230	len = sizeof uap->name->release;
231	rtval = userland_sysctl(p, name, 2, uap->name->release, &len,
232		1, 0, 0, 0);
233	if( rtval) return rtval;
234	subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
235
236/*
237	name = KERN_VERSION;
238	len = sizeof uap->name->version;
239	rtval = userland_sysctl(p, name, 2, uap->name->version, &len,
240		1, 0, 0, 0);
241	if( rtval) return rtval;
242	subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
243*/
244
245/*
246 * this stupid hackery to make the version field look like FreeBSD 1.1
247 */
248	for(s = version; *s && *s != '#'; s++);
249
250	for(us = uap->name->version; *s && *s != ':'; s++) {
251		rtval = subyte( us++, *s);
252		if( rtval)
253			return rtval;
254	}
255	rtval = subyte( us++, 0);
256	if( rtval)
257		return rtval;
258
259	name[1] = HW_MACHINE;
260	len = sizeof uap->name->machine;
261	rtval = userland_sysctl(p, name, 2, uap->name->machine, &len,
262		1, 0, 0, 0);
263	if( rtval) return rtval;
264	subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
265
266	return 0;
267}
268
269#ifndef _SYS_SYSPROTO_H_
270struct getdomainname_args {
271        char    *domainname;
272        int     len;
273};
274#endif
275
276/* ARGSUSED */
277int
278getdomainname(p, uap, retval)
279        struct proc *p;
280        struct getdomainname_args *uap;
281        int *retval;
282{
283	if ((u_int)uap->len > domainnamelen + 1)
284		uap->len = domainnamelen + 1;
285	return (copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len));
286}
287
288#ifndef _SYS_SYSPROTO_H_
289struct setdomainname_args {
290        char    *domainname;
291        int     len;
292};
293#endif
294
295/* ARGSUSED */
296int
297setdomainname(p, uap, retval)
298        struct proc *p;
299        struct setdomainname_args *uap;
300        int *retval;
301{
302        int error;
303
304        if ((error = suser(p->p_ucred, &p->p_acflag)))
305                return (error);
306        if ((u_int)uap->len > sizeof (domainname) - 1)
307                return EINVAL;
308        domainnamelen = uap->len;
309        error = copyin((caddr_t)uap->domainname, domainname, uap->len);
310        domainname[domainnamelen] = 0;
311        return (error);
312}
313
314