kern_xxx.c revision 12657 
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 1.21 1995/12/02 18:58:50 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 <sys/sysctl.h>
44#include <sys/utsname.h>
45#include <sys/signalvar.h>
46
47/* This implements a "TEXT_SET" for cleanup functions */
48static void	dummy_cleanup __P((void));
49static void
50dummy_cleanup() {}
51TEXT_SET(cleanup_set, dummy_cleanup);
52
53typedef void (*cleanup_func_t)(void);
54extern const struct linker_set cleanup_set;
55static const cleanup_func_t *cleanups =
56        (const cleanup_func_t *)&cleanup_set.ls_items[0];
57
58#ifndef _SYS_SYSPROTO_H_
59struct reboot_args {
60	int	opt;
61};
62#endif
63/* ARGSUSED */
64int
65reboot(p, uap, retval)
66	struct proc *p;
67	struct reboot_args *uap;
68	int *retval;
69{
70	int error;
71
72	if ((error = suser(p->p_ucred, &p->p_acflag)))
73		return (error);
74
75	if (!uap->opt & RB_NOSYNC) {
76		printf("\ncleaning up... ");
77                while(*cleanups) {
78                        (**cleanups++)();
79                }
80	}
81
82	boot(uap->opt);
83	return (0);
84}
85
86#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
87
88#ifndef _SYS_SYSPROTO_H_
89struct gethostname_args {
90	char	*hostname;
91	u_int	len;
92};
93#endif
94/* ARGSUSED */
95int
96ogethostname(p, uap, retval)
97	struct proc *p;
98	struct gethostname_args *uap;
99	int *retval;
100{
101	int name[2];
102
103	name[0] = CTL_KERN;
104	name[1] = KERN_HOSTNAME;
105	return (userland_sysctl(p, name, 2, uap->hostname, &uap->len,
106		1, 0, 0, 0));
107}
108
109#ifndef _SYS_SYSPROTO_H_
110struct sethostname_args {
111	char	*hostname;
112	u_int	len;
113};
114#endif
115/* ARGSUSED */
116int
117osethostname(p, uap, retval)
118	struct proc *p;
119	register struct sethostname_args *uap;
120	int *retval;
121{
122	int name[2];
123	int error;
124
125	name[0] = CTL_KERN;
126	name[1] = KERN_HOSTNAME;
127	if ((error = suser(p->p_ucred, &p->p_acflag)))
128		return (error);
129	return (userland_sysctl(p, name, 2, 0, 0, 0,
130		uap->hostname, uap->len, 0));
131}
132
133#ifndef _SYS_SYSPROTO_H_
134struct ogethostid_args {
135	int	dummy;
136};
137#endif
138/* ARGSUSED */
139int
140ogethostid(p, uap, retval)
141	struct proc *p;
142	struct ogethostid_args *uap;
143	int *retval;
144{
145
146	*(long *)retval = hostid;
147	return (0);
148}
149#endif /* COMPAT_43 || COMPAT_SUNOS */
150
151#ifdef COMPAT_43
152#ifndef _SYS_SYSPROTO_H_
153struct osethostid_args {
154	long	hostid;
155};
156#endif
157/* ARGSUSED */
158int
159osethostid(p, uap, retval)
160	struct proc *p;
161	struct osethostid_args *uap;
162	int *retval;
163{
164	int error;
165
166	if ((error = suser(p->p_ucred, &p->p_acflag)))
167		return (error);
168	hostid = uap->hostid;
169	return (0);
170}
171
172int
173oquota(p, uap, retval)
174	struct proc *p;
175	struct oquota_args *uap;
176	int *retval;
177{
178
179	return (ENOSYS);
180}
181#endif /* COMPAT_43 */
182
183void
184shutdown_nice(void)
185{
186	/* Send a signal to init(8) and have it shutdown the world */
187	if (initproc != NULL) {
188		psignal(initproc, SIGINT);
189	} else {
190		/* No init(8) running, so simply reboot */
191		boot(RB_NOSYNC);
192	}
193	return;
194}
195
196
197#ifndef _SYS_SYSPROTO_H_
198struct uname_args {
199        struct utsname  *name;
200};
201#endif
202
203/* ARGSUSED */
204int
205uname(p, uap, retval)
206	struct proc *p;
207	struct uname_args *uap;
208	int *retval;
209{
210	int name[2], len, rtval;
211	char *s, *us;
212
213	name[0] = CTL_KERN;
214	name[1] = KERN_OSTYPE;
215	len = sizeof uap->name->sysname;
216	rtval = userland_sysctl(p, name, 2, uap->name->sysname, &len,
217		1, 0, 0, 0);
218	if( rtval) return rtval;
219	subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
220
221	name[1] = KERN_HOSTNAME;
222	len = sizeof uap->name->nodename;
223	rtval = userland_sysctl(p, name, 2, uap->name->nodename, &len,
224		1, 0, 0, 0);
225	if( rtval) return rtval;
226	subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
227
228	name[1] = KERN_OSRELEASE;
229	len = sizeof uap->name->release;
230	rtval = userland_sysctl(p, name, 2, uap->name->release, &len,
231		1, 0, 0, 0);
232	if( rtval) return rtval;
233	subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
234
235/*
236	name = KERN_VERSION;
237	len = sizeof uap->name->version;
238	rtval = userland_sysctl(p, name, 2, uap->name->version, &len,
239		1, 0, 0, 0);
240	if( rtval) return rtval;
241	subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
242*/
243
244/*
245 * this stupid hackery to make the version field look like FreeBSD 1.1
246 */
247	for(s = version; *s && *s != '#'; s++);
248
249	for(us = uap->name->version; *s && *s != ':'; s++) {
250		rtval = subyte( us++, *s);
251		if( rtval)
252			return rtval;
253	}
254	rtval = subyte( us++, 0);
255	if( rtval)
256		return rtval;
257
258	name[1] = HW_MACHINE;
259	len = sizeof uap->name->machine;
260	rtval = userland_sysctl(p, name, 2, uap->name->machine, &len,
261		1, 0, 0, 0);
262	if( rtval) return rtval;
263	subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
264
265	return 0;
266}
267
268#ifndef _SYS_SYSPROTO_H_
269struct getdomainname_args {
270        char    *domainname;
271        int     len;
272};
273#endif
274
275/* ARGSUSED */
276int
277getdomainname(p, uap, retval)
278        struct proc *p;
279        struct getdomainname_args *uap;
280        int *retval;
281{
282	int domainnamelen = strlen(domainname) + 1;
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, domainnamelen;
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