/* gethostn - a small diagnostic utility to show what the * gethostname() API returns. Of course, this tool duplicates * functionality already found in other tools. But the point is * that the API shall be called by a program that is compiled like * rsyslogd and does exactly what rsyslog does. * * Copyright 2008 Rainer Gerhards and Adiscon GmbH. * * This file is part of rsyslog. * * Rsyslog is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Rsyslog is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Rsyslog. If not, see . * * A copy of the GPL can be found in the file "COPYING" in this distribution. */ #include "config.h" #include #include #include int main(int __attribute__((unused)) argc, char __attribute__((unused)) *argv[]) { char hostname[4096]; /* this should always be sufficient ;) */ int err; err = gethostname(hostname, sizeof(hostname)); if(err) { perror("gethostname failed"); exit(1); } printf("hostname of this system is '%s'.\n", hostname); return 0; }