domainname.c revision 26434
11556Srgrimes/* 21556Srgrimes * Copyright (c) 1988, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * Redistribution and use in source and binary forms, with or without 61556Srgrimes * modification, are permitted provided that the following conditions 71556Srgrimes * are met: 81556Srgrimes * 1. Redistributions of source code must retain the above copyright 91556Srgrimes * notice, this list of conditions and the following disclaimer. 101556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111556Srgrimes * notice, this list of conditions and the following disclaimer in the 121556Srgrimes * documentation and/or other materials provided with the distribution. 131556Srgrimes * 3. All advertising materials mentioning features or use of this software 141556Srgrimes * must display the following acknowledgement: 151556Srgrimes * This product includes software developed by the University of 161556Srgrimes * California, Berkeley and its contributors. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes * 331556Srgrimes * $Id: domainname.c,v 1.9 1997/06/03 06:19:04 charnier Exp $ 341556Srgrimes */ 351556Srgrimes 361556Srgrimes#ifndef lint 371556Srgrimesstatic char const copyright[] = 3836150Scharnier"@(#) Copyright (c) 1988, 1993\n\ 3936150Scharnier The Regents of the University of California. All rights reserved.\n"; 4036150Scharnier#endif /* not lint */ 4136150Scharnier 4238536Scracauer#ifndef lint 431556Srgrimesstatic char const sccsid[] = "From: @(#)hostname.c 8.1 (Berkeley) 5/31/93"; 441556Srgrimes#endif /* not lint */ 4517987Speter 4617987Speter#include <sys/param.h> 4717987Speter 4817987Speter#include <err.h> 491556Srgrimes#include <stdio.h> 501556Srgrimes#include <stdlib.h> 511556Srgrimes#include <string.h> 521556Srgrimes#include <unistd.h> 531556Srgrimes 5417987Spetervoid usage __P((void)); 551556Srgrimes 561556Srgrimesint 571556Srgrimesmain(argc,argv) 581556Srgrimes int argc; 591556Srgrimes char *argv[]; 601556Srgrimes{ 611556Srgrimes int ch; 621556Srgrimes char domainname[MAXHOSTNAMELEN]; 631556Srgrimes 641556Srgrimes while ((ch = getopt(argc, argv, "")) != -1) 651556Srgrimes switch (ch) { 661556Srgrimes default: 671556Srgrimes usage(); 681556Srgrimes } 691556Srgrimes argc -= optind; 701556Srgrimes argv += optind; 711556Srgrimes 721556Srgrimes if (argc > 1) 731556Srgrimes usage(); 741556Srgrimes 751556Srgrimes if (*argv) { 761556Srgrimes if (setdomainname(*argv, strlen(*argv))) 7717987Speter err(1, "setdomainname"); 7838521Scracauer } else { 7938536Scracauer if (getdomainname(domainname, sizeof(domainname))) 8020902Ssteve err(1, "getdomainname"); 8138521Scracauer (void)printf("%s\n", domainname); 8238521Scracauer } 8320902Ssteve exit(0); 841556Srgrimes} 8517987Speter 8617987Spetervoid 8720902Ssteveusage() 881556Srgrimes{ 8920902Ssteve (void)fprintf(stderr, "usage: domainname [ypdomain]\n"); 9020902Ssteve exit(1); 9120902Ssteve} 9220902Ssteve