Check for log file readability

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1129 f882894a-f735-0410-b71e-b25c423dba1c

plugins-scripts/check_log.sh

@@ -167,6 +167,9 @@ done
 if [ ! -e $logfile ]; then
     $ECHO "Log check error: Log file $logfile does not exist!\n"
     exit $STATE_UNKNOWN
+elif [ ! -r $logfile ] ; then
+    $ECHO "Log check error: Log file $logfile is not readable!\n"
+    exit $STATE_UNKNOWN
 fi
 
 # If the old log file doesn't exist, this must be the first time