Annotation of src/lib/libc/gen/getdomainname.c, Revision 1.12.56.1
1.12.56.1! yamt 1: /* $NetBSD: getdomainname.c,v 1.12 2003/08/07 16:42:49 agc Exp $ */
1.2 cgd 2:
1.1 cgd 3: /*
4: * Copyright (c) 1989, 1993
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.
1.12 agc 15: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 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:
1.4 christos 32: #include <sys/cdefs.h>
1.1 cgd 33: #if defined(LIBC_SCCS) && !defined(lint)
1.2 cgd 34: #if 0
35: static char sccsid[] = "@(#)gethostname.c 8.1 (Berkeley) 6/4/93";
36: #else
1.12.56.1! yamt 37: __RCSID("$NetBSD: getdomainname.c,v 1.12 2003/08/07 16:42:49 agc Exp $");
1.2 cgd 38: #endif
1.1 cgd 39: #endif /* LIBC_SCCS and not lint */
40:
1.5 jtc 41: #include "namespace.h"
1.1 cgd 42: #include <sys/param.h>
43: #include <sys/sysctl.h>
1.8 lukem 44:
45: #include <assert.h>
46: #include <errno.h>
1.4 christos 47: #include <unistd.h>
1.7 kleink 48:
49: #ifdef __weak_alias
1.11 mycroft 50: __weak_alias(getdomainname,_getdomainname)
1.7 kleink 51: #endif
1.1 cgd 52:
1.3 jtc 53: int
1.12.56.1! yamt 54: getdomainname(char *name, size_t namelen)
1.1 cgd 55: {
56: int mib[2];
57: size_t size;
1.10 is 58: int olderrno;
1.8 lukem 59:
60: _DIAGASSERT(name != NULL);
1.1 cgd 61:
62: mib[0] = CTL_KERN;
63: mib[1] = KERN_DOMAINNAME;
64: size = namelen;
1.10 is 65: olderrno = errno;
66: if (sysctl(mib, 2, name, &size, NULL, 0) == -1) {
67: if (errno == ENOMEM) {
68: errno = olderrno;
69: return (0);
70: }
1.1 cgd 71: return (-1);
1.10 is 72: }
73:
1.1 cgd 74: return (0);
75: }
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