#!/bin/sh

functions=/lib/rcscripts/sh/fsupgrade-functions.sh

[ -f $functions ] && . $functions || {

	echo "Failed to source helper functions!"

	exit 1

}

mounted() {

	_cmd='_res=$(mount | grep "on[[:blank:]]\+$1[[:blank:]]") || _err=$?'

	eval $_cmd

	if [ $_err -ne 0 ]; then

		return 1

	fi

	return 0

}

IVDIR=/usr/local

IVDEV=/dev/part/iv

FSTYPE=ubifs

printf "Erasing $IVDIR\n"

DOMOUNT=n

if mounted $IVDIR; then

	unmount $IVDIR || error "skipping erase of $IVDIR"

	DOMOUNT=y

fi

if [ -c $IVDEV ]; then

	ubiupdatevol --truncate $IVDEV || warning "failed erasing $IVDIR"

fi

if [ $DOMOUNT = y ]; then

	mmount -t $FSTYPE $IVDEV $IVDIR || warning "failed to mount $IVDIR after erase"

fi