1 /* $NetBSD: gethostname.c,v 1.1.1.3 2014/12/10 03:34:28 christos Exp $ */ 2 3 /* 4 * Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC") 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 11 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 12 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 13 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 14 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 15 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <config.h> 20 21 #include <unistd.h> 22 #include <stdio.h> 23 #include <stdlib.h> 24 25 #include <isc/util.h> 26 27 #ifndef MAXHOSTNAMELEN 28 #ifdef HOST_NAME_MAX 29 #define MAXHOSTNAMELEN HOST_NAME_MAX 30 #else 31 #define MAXHOSTNAMELEN 256 32 #endif 33 #endif 34 35 int 36 main(int argc, char **argv) { 37 char hostname[MAXHOSTNAMELEN]; 38 int n; 39 40 UNUSED(argc); 41 UNUSED(argv); 42 43 n = gethostname(hostname, sizeof(hostname)); 44 if (n == -1) { 45 perror("gethostname"); 46 exit(1); 47 } 48 fprintf(stdout, "%s\n", hostname); 49 return (0); 50 } 51