xref: /openbsd-src/lib/libc/gen/uname.c (revision b2ea75c1b17e1a9a339660e7ed45cd24946b230e)
1 /*-
2  * Copyright (c) 1994
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 #if defined(LIBC_SCCS) && !defined(lint)
35 static char rcsid[] = "$OpenBSD: uname.c,v 1.5 1996/09/15 09:31:09 tholo Exp $";
36 #endif /* LIBC_SCCS and not lint */
37 
38 #include <sys/param.h>
39 #include <sys/sysctl.h>
40 #include <sys/utsname.h>
41 
42 int
43 uname(name)
44 	struct utsname *name;
45 {
46 	int mib[2], rval;
47 	size_t len;
48 
49 	rval = 0;
50 
51 	mib[0] = CTL_KERN;
52 	mib[1] = KERN_OSTYPE;
53 	len = sizeof(name->sysname);
54 	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
55 		rval = -1;
56 
57 	mib[0] = CTL_KERN;
58 	mib[1] = KERN_HOSTNAME;
59 	len = sizeof(name->nodename);
60 	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
61 		rval = -1;
62 
63 	mib[0] = CTL_KERN;
64 	mib[1] = KERN_OSRELEASE;
65 	len = sizeof(name->release);
66 	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
67 		rval = -1;
68 
69 	mib[0] = CTL_KERN;
70 	mib[1] = KERN_OSVERSION;
71 	len = sizeof(name->version);
72 	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
73 		mib[0] = CTL_KERN;
74 		mib[1] = KERN_VERSION;
75 		len = sizeof(name->version);
76 		if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1)
77 			rval = -1;
78 	}
79 
80 	mib[0] = CTL_HW;
81 	mib[1] = HW_MACHINE;
82 	len = sizeof(name->machine);
83 	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
84 		rval = -1;
85 	return (rval);
86 }
87