From 37bac26f6edb2104829ed1b97061753530ecbdf8 Mon Sep 17 00:00:00 2001 From: Rainer Gerhards Date: Wed, 16 Jul 2008 11:57:18 +0200 Subject: added a samll diagnostic tool to obtain result of gethostname() API --- tools/gethostn.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 tools/gethostn.c (limited to 'tools/gethostn.c') diff --git a/tools/gethostn.c b/tools/gethostn.c new file mode 100644 index 00000000..746b9381 --- /dev/null +++ b/tools/gethostn.c @@ -0,0 +1,46 @@ +/* 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 + +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; +} -- cgit