domainname.c revision 1.4 
1/*
2 * Copyright (c) 1992/3 Theo de Raadt <deraadt@fsa.ca>
3 * 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. The name of the author may not be used to endorse or promote
14 *    products derived from this software without specific prior written
15 *    permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef lint
31static char rcsid[] = "$Id: domainname.c,v 1.4 1994/02/23 02:48:29 cgd Exp $";
32#endif /* not lint */
33
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include <unistd.h>
38#include <sys/param.h>
39
40static void usage __P((void));
41
42main(argc, argv)
43	int argc;
44	char **argv;
45{
46	char dom[MAXHOSTNAMELEN];
47
48	if( argc>2 ) {
49		usage ();
50		/* NOTREACHED */
51	}
52
53	if( argc==2 ) {
54		if( setdomainname(argv[1], strlen(argv[1])+1) == -1) {
55			perror("setdomainname");
56			exit(1);
57		}
58	} else {
59		if( getdomainname(dom, sizeof(dom)) == -1) {
60			perror("getdomainname");
61			exit(1);
62		}
63		printf("%s\n", dom);
64	}
65
66	exit(0);
67}
68
69static void
70usage ()
71{
72	(void)fprintf(stderr, "usage: domainname [name-of-domain]\n");
73	exit(1);
74}
75