uname.c revision 3565 
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 sccsid[] = "From: @(#)uname.c	8.1 (Berkeley) 1/4/94";*/
36static const char rcsid[] =
37	"$Id$";
38#endif /* LIBC_SCCS and not lint */
39
40#include <sys/param.h>
41#include <sys/sysctl.h>
42#include <sys/utsname.h>
43#include <errno.h>
44
45int
46uname(name)
47	struct utsname *name;
48{
49	int mib[2], rval;
50	size_t len;
51	char *p;
52	int oerrno;
53
54	rval = 0;
55
56	mib[0] = CTL_KERN;
57	mib[1] = KERN_OSTYPE;
58	len = sizeof(name->sysname);
59	oerrno = errno;
60	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) {
61		if(errno == ENOMEM)
62			errno = oerrno;
63		else
64			rval = -1;
65	}
66
67	mib[0] = CTL_KERN;
68	mib[1] = KERN_HOSTNAME;
69	len = sizeof(name->nodename);
70	oerrno = errno;
71	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) {
72		if(errno == ENOMEM)
73			errno = oerrno;
74		else
75			rval = -1;
76	}
77
78	mib[0] = CTL_KERN;
79	mib[1] = KERN_OSRELEASE;
80	len = sizeof(name->release);
81	oerrno = errno;
82	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) {
83		if(errno == ENOMEM)
84			errno = oerrno;
85		else
86			rval = -1;
87	}
88
89	/* The version may have newlines in it, turn them into spaces. */
90	mib[0] = CTL_KERN;
91	mib[1] = KERN_VERSION;
92	len = sizeof(name->version);
93	oerrno = errno;
94	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
95		if (errno == ENOMEM)
96			errno = oerrno;
97		else
98			rval = -1;
99	} else {
100		for (p = name->version; len--; ++p) {
101			if (*p == '\n' || *p == '\t') {
102				if (len > 1)
103					*p = ' ';
104				else
105					*p = '\0';
106			}
107		}
108	}
109
110	mib[0] = CTL_HW;
111	mib[1] = HW_MACHINE;
112	len = sizeof(name->machine);
113	oerrno = errno;
114	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) {
115		if (errno == ENOMEM)
116			errno = oerrno;
117		else
118			rval = -1;
119	}
120	return (rval);
121}
122