1 /* $NetBSD: uname.c,v 1.12 2014/06/14 13:09:37 apb Exp $ */
2
3 /*-
4 * Copyright (c) 1994
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #if defined(LIBC_SCCS) && !defined(lint)
34 #if 0
35 static char sccsid[] = "@(#)uname.c 8.1 (Berkeley) 1/4/94";
36 #else
37 __RCSID("$NetBSD: uname.c,v 1.12 2014/06/14 13:09:37 apb Exp $");
38 #endif
39 #endif /* LIBC_SCCS and not lint */
40
41 #include "namespace.h"
42 #include <sys/param.h>
43 #include <sys/sysctl.h>
44 #include <sys/utsname.h>
45
46 #include <assert.h>
47 #include <errno.h>
48
49 #ifdef __weak_alias
__weak_alias(uname,_uname)50 __weak_alias(uname,_uname)
51 #endif
52
53 int
54 uname(struct utsname *name)
55 {
56 int mib[2];
57 size_t len;
58 char *p;
59
60 _DIAGASSERT(name != NULL);
61
62 mib[0] = CTL_KERN;
63 mib[1] = KERN_OSTYPE;
64 len = sizeof(name->sysname);
65 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
66 goto error;
67
68 mib[0] = CTL_KERN;
69 mib[1] = KERN_HOSTNAME;
70 len = sizeof(name->nodename);
71 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
72 goto error;
73
74 mib[0] = CTL_KERN;
75 mib[1] = KERN_OSRELEASE;
76 len = sizeof(name->release);
77 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
78 goto error;
79
80 mib[0] = CTL_KERN;
81 mib[1] = KERN_VERSION;
82 len = sizeof(name->version);
83 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
84 if (errno == ENOMEM) {
85 /*
86 * string is too long for {struct utsname}.version.
87 * Just use the truncated string.
88 * XXX: We could mark the truncation with "..."
89 */
90 name->version[sizeof(name->version) - 1] = '\0';
91 }
92 else goto error;
93 }
94
95 /* The version may have newlines in it, turn them into spaces. */
96 for (p = name->version; len--; ++p) {
97 if (*p == '\n' || *p == '\t') {
98 if (len > 1)
99 *p = ' ';
100 else
101 *p = '\0';
102 }
103 }
104
105 mib[0] = CTL_HW;
106 mib[1] = HW_MACHINE;
107 len = sizeof(name->machine);
108 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
109 goto error;
110 return (0);
111
112 error:
113 return (-1);
114 }
115