1/*	$OpenBSD: uname.c,v 1.11 2016/08/27 03:55:43 guenther Exp $ */
2/*-
3 * Copyright (c) 1994
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of the University nor the names of its contributors
15 *    may be used to endorse or promote products derived from this software
16 *    without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#include <sys/types.h>
32#include <sys/sysctl.h>
33#include <sys/utsname.h>
34#include <stdio.h>		/* for NULL */
35
36/* A slightly modified copy of this file exists in libexec/ld.so */
37
38int
39uname(struct utsname *name)
40{
41	int mib[2], rval;
42	size_t len;
43
44	rval = 0;
45
46	mib[0] = CTL_KERN;
47	mib[1] = KERN_OSTYPE;
48	len = sizeof(name->sysname);
49	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
50		rval = -1;
51
52	mib[0] = CTL_KERN;
53	mib[1] = KERN_HOSTNAME;
54	len = sizeof(name->nodename);
55	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
56		rval = -1;
57
58	mib[0] = CTL_KERN;
59	mib[1] = KERN_OSRELEASE;
60	len = sizeof(name->release);
61	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
62		rval = -1;
63
64	mib[0] = CTL_KERN;
65	mib[1] = KERN_OSVERSION;
66	len = sizeof(name->version);
67	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
68		mib[0] = CTL_KERN;
69		mib[1] = KERN_VERSION;
70		len = sizeof(name->version);
71		if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1)
72			rval = -1;
73	}
74
75	mib[0] = CTL_HW;
76	mib[1] = HW_MACHINE;
77	len = sizeof(name->machine);
78	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
79		rval = -1;
80	return (rval);
81}
82