1 /* $NetBSD: domainname.c,v 1.11 1998/07/28 05:31:24 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 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 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)hostname.c 8.1 (Berkeley) 5/31/93"; 45 #else 46 __RCSID("$NetBSD: domainname.c,v 1.11 1998/07/28 05:31:24 mycroft Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <sys/param.h> 51 52 #include <err.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 58 void usage __P((void)); 59 int main __P((int, char *[])); 60 61 int 62 main(argc, argv) 63 int argc; 64 char *argv[]; 65 { 66 int ch; 67 char domainname[MAXHOSTNAMELEN]; 68 69 while ((ch = getopt(argc, argv, "")) != -1) 70 switch (ch) { 71 case '?': 72 default: 73 usage(); 74 } 75 argc -= optind; 76 argv += optind; 77 78 if (argc > 1) 79 usage(); 80 81 if (*argv) { 82 if (setdomainname(*argv, strlen(*argv))) 83 err(1, "setdomainname"); 84 } else { 85 if (getdomainname(domainname, sizeof(domainname))) 86 err(1, "getdomainname"); 87 (void)printf("%s\n", domainname); 88 } 89 exit(0); 90 /* NOTREACHED */ 91 } 92 93 void 94 usage() 95 { 96 97 (void)fprintf(stderr, "usage: domainname [name-of-domain]\n"); 98 exit(1); 99 /* NOTREACHED */ 100 } 101