#!/bin/bash

### BEGIN INIT INFO
# Provides:          resize2fs
# Required-Start:    $local_fs
# Required-Stop:
# Should-Start:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Resize the root filesystem to fill whole rootfs partition
# Description:
### END INIT INFO

case "$1" in
	start)
		set -e
		# Try to get rootfs device and type
		ROOTFS=$(findmnt / | awk -F" " '/\/dev\// {print $2"\t"$3}')
		set ${ROOTFS}
		device=$1
		rootfstype=$2

		# If this doesn't work (wheezy) then try it the old way
		if [ -z $rootfstype ]; then
			device="/dev/"$(lsblk -idn -o NAME | grep mmcblk0)
			PARTITIONS=$(($(fdisk -l $device | grep $device | wc -l)-1))
			device="/dev/"$(lsblk -idn -o NAME | grep mmcblk0)"p"$PARTITIONS
			N=/etc/init.d/resize2fs
			root_device=$(mountpoint -d /)
			for file in /dev/* ; do
			CURRENT_DEVICE=$(printf "%d:%d" $(stat --printf="0x%t 0x%T" $file))
			if [ $CURRENT_DEVICE = $root_device ]; then
				root_partition=$file
				break;
			fi
			done
			rootfstype=$(blkid -s TYPE -o value $root_partition)
		fi

		# if ext4 and rootfs should be resized then do it
		if [[ $rootfstype == ext4 && ! -f "/root/.no_rootfs_resize" ]]; then
			echo -e "\n### [resize2fs] Start resizing partition now\n" >>/var/log/armhwinfo.log
			/sbin/resize2fs $device >>/var/log/armhwinfo.log 2>&1
		fi

		# disable further executions of this script
		update-rc.d -f resize2fs remove >/dev/null 2>&1
		;;
esac