uname.c revision 87696 
1/*-
2 * Copyright (c) 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
34#include <sys/cdefs.h>
35
36__FBSDID("$FreeBSD: head/usr.bin/uname/uname.c 87696 2001-12-11 23:16:25Z markm $");
37
38#ifndef lint
39static const char copyright[] =
40"@(#) Copyright (c) 1993\n\
41	The Regents of the University of California.  All rights reserved.\n";
42#endif
43
44#ifndef lint
45static const char sccsid[] = "@(#)uname.c	8.2 (Berkeley) 5/4/95";
46#endif
47
48#include <sys/param.h>
49#include <sys/sysctl.h>
50
51#include <err.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <unistd.h>
55
56void usage __P((void));
57
58int
59main(argc, argv)
60	int argc;
61	char *argv[];
62{
63#define	MFLAG	0x01
64#define	NFLAG	0x02
65#define	RFLAG	0x04
66#define	SFLAG	0x08
67#define	VFLAG	0x10
68	u_int flags;
69	int ch, mib[2];
70	size_t len, tlen;
71	char *p, buf[1024];
72	const char *prefix;
73
74	flags = 0;
75	while ((ch = getopt(argc, argv, "amnprsv")) != -1)
76		switch(ch) {
77		case 'a':
78			flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG);
79			break;
80		case 'p':
81		case 'm':
82			flags |= MFLAG;
83			break;
84		case 'n':
85			flags |= NFLAG;
86			break;
87		case 'r':
88			flags |= RFLAG;
89			break;
90		case 's':
91			flags |= SFLAG;
92			break;
93		case 'v':
94			flags |= VFLAG;
95			break;
96		case '?':
97		default:
98			usage();
99		}
100
101	argc -= optind;
102	argv += optind;
103
104	if (argc)
105		usage();
106
107	if (!flags)
108		flags |= SFLAG;
109
110	prefix = "";
111
112	if (flags & SFLAG) {
113		mib[0] = CTL_KERN;
114		mib[1] = KERN_OSTYPE;
115		len = sizeof(buf);
116		if (sysctl(mib, 2, &buf, &len, NULL, 0) == -1)
117			err(1, "sysctl");
118		(void)printf("%s%.*s", prefix, (int)len, buf);
119		prefix = " ";
120	}
121	if (flags & NFLAG) {
122		mib[0] = CTL_KERN;
123		mib[1] = KERN_HOSTNAME;
124		len = sizeof(buf);
125		if (sysctl(mib, 2, &buf, &len, NULL, 0) == -1)
126			err(1, "sysctl");
127		(void)printf("%s%.*s", prefix, (int)len, buf);
128		prefix = " ";
129	}
130	if (flags & RFLAG) {
131		mib[0] = CTL_KERN;
132		mib[1] = KERN_OSRELEASE;
133		len = sizeof(buf);
134		if (sysctl(mib, 2, &buf, &len, NULL, 0) == -1)
135			err(1, "sysctl");
136		(void)printf("%s%.*s", prefix, (int)len, buf);
137		prefix = " ";
138	}
139	if (flags & VFLAG) {
140		mib[0] = CTL_KERN;
141		mib[1] = KERN_VERSION;
142		len = sizeof(buf);
143		if (sysctl(mib, 2, &buf, &len, NULL, 0) == -1)
144			err(1, "sysctl");
145		for (p = buf, tlen = len; tlen--; ++p)
146			if (*p == '\n' || *p == '\t')
147				*p = ' ';
148		(void)printf("%s%.*s", prefix, (int)len, buf);
149		prefix = " ";
150	}
151	if (flags & MFLAG) {
152		mib[0] = CTL_HW;
153		mib[1] = HW_MACHINE;
154		len = sizeof(buf);
155		if (sysctl(mib, 2, &buf, &len, NULL, 0) == -1)
156			err(1, "sysctl");
157		(void)printf("%s%.*s", prefix, (int)len, buf);
158		prefix = " ";
159	}
160	(void)printf("\n");
161	exit (0);
162}
163
164void
165usage()
166{
167	(void)fprintf(stderr, "usage: uname [-amnrsv]\n");
168	exit(1);
169}
170