+if [[ $# == 4 ]];then
+ evac_dir=$1
+ mount_vol_dev=$2
+ owner=$3
+ group=$4
+elif [[ $# == 2 ]]; then
+ evac_dir=$1
+ mount_vol_dev=$2
+ # they didn't provide a u/g. use the owner of the mountpoint if
+ # it exists or our own user/group (almost certaimly root) if not.
+ owner=`stat -c '%U' ${evac_dir} 2>/dev/null || id -un`
+ group=`stat -c '%G' ${evac_dir} 2>/dev/null || id -gn`
+else