Annotation of src/lib/libc/gen/getdomainname.c, Revision 1.10
1.10 ! is 1: /* $NetBSD: getdomainname.c,v 1.9 1999/09/20 04:39:00 lukem 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.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
1.4 christos 36: #include <sys/cdefs.h>
1.1 cgd 37: #if defined(LIBC_SCCS) && !defined(lint)
1.2 cgd 38: #if 0
39: static char sccsid[] = "@(#)gethostname.c 8.1 (Berkeley) 6/4/93";
40: #else
1.10 ! is 41: __RCSID("$NetBSD: getdomainname.c,v 1.9 1999/09/20 04:39:00 lukem Exp $");
1.2 cgd 42: #endif
1.1 cgd 43: #endif /* LIBC_SCCS and not lint */
44:
1.5 jtc 45: #include "namespace.h"
1.1 cgd 46: #include <sys/param.h>
47: #include <sys/sysctl.h>
1.8 lukem 48:
49: #include <assert.h>
50: #include <errno.h>
1.4 christos 51: #include <unistd.h>
1.7 kleink 52:
53: #ifdef __weak_alias
54: __weak_alias(getdomainname,_getdomainname);
55: #endif
1.1 cgd 56:
1.3 jtc 57: int
1.1 cgd 58: getdomainname(name, namelen)
59: char *name;
1.6 kleink 60: size_t namelen;
1.1 cgd 61: {
62: int mib[2];
63: size_t size;
1.10 ! is 64: int olderrno;
1.8 lukem 65:
66: _DIAGASSERT(name != NULL);
1.1 cgd 67:
68: mib[0] = CTL_KERN;
69: mib[1] = KERN_DOMAINNAME;
70: size = namelen;
1.10 ! is 71: olderrno = errno;
! 72: if (sysctl(mib, 2, name, &size, NULL, 0) == -1) {
! 73: if (errno == ENOMEM) {
! 74: errno = olderrno;
! 75: return (0);
! 76: }
1.1 cgd 77: return (-1);
1.10 ! is 78: }
! 79:
1.1 cgd 80: return (0);
81: }
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