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authorRainer Gerhards <rgerhards@adiscon.com>2008-07-16 11:57:18 +0200
committerRainer Gerhards <rgerhards@adiscon.com>2008-07-16 11:57:18 +0200
commit37bac26f6edb2104829ed1b97061753530ecbdf8 (patch)
tree4917f2e3b900914dd7dd47d50cda803aa8e6cf16 /tools/gethostn.c
parent6b3bc860f8c47de606d7fa2ae3b51655c2f13838 (diff)
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added a samll diagnostic tool to obtain result of gethostname() API
Diffstat (limited to 'tools/gethostn.c')
-rw-r--r--tools/gethostn.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/tools/gethostn.c b/tools/gethostn.c
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+/* 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 <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <unistd.h>
+
+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;
+}