#!/bin/ksh
#
# Author: Todd Barbera
# Date: 10/26/05
# Purpose: Report back to nagios file system usage
#

. /usr/local/nagios/libexec/utils.sh

print_usage() {
	echo "Usage: check_fs_space -w warning% -c critical%"
	echo "Usage: check_fs_space -h"
	echo ""
}

print_help() {
	echo "Plugin to check local file system usage"
	echo ""
	echo print_usage
}

# Make sure the correct number of command line
# arguments have been supplied

if [ $# -lt 1 ]; then
    print_usage
    exit $STATE_UNKNOWN
fi

while test -n "$1"; do
   case "$1" in
	-h)
	    print_help
	    exit $STATE_OK
	    ;;
	-w)
	    warnlev=$2
	    shift
	    ;;
	-c)
	    critlev=$2
	    shift
	    ;;
	*)
	    echo "Unknown argument: $1"
	    print_usage
	    exit $STATE_UNKNOWN
	    ;;
   esac
   shift
done

# Check local file systems and compare against warn/critical levels

warnlev=`echo $warnlev|sed -e 's/\%//'`
critlev=`echo $critlev|sed -e 's/\%//'`
warnflag=0
critflag=0

df -kl |grep -v Filesystem|while read line>/dev/null
do
   set -f $line
   fileper=`echo $5`
   fileper=`echo $fileper|sed -e 's/\%//'`
   if [ $fileper -ge $critlev ]; then
	errmsg=`echo "$errmsg CRITICAL: $6 is at $5."`
	critflag=1
   elif [ $fileper -ge $warnlev ]; then
	errmsg=`echo "$errmsg WARNING: $6 is at $5."`
	warnflag=1
   fi
done

if [ $critflag = 1 ]; then
   echo $errmsg
   exit $STATE_CRITICAL
elif [ $warnflag = 1 ]; then
   echo $errmsg
   exit $STATE_WARNING
else
   echo "File system utilization is OK"
   exit $STATE_OK
fi