#!/bin/bash

err_handler() {
	ret=$?
	[ "$ret" -eq 0 ] && return

	msg_error "Running ${FUNCNAME[1]} failed!"
	msg_error "exit code $ret from line ${BASH_LINENO[0]}:"
	msg_info "    $BASH_COMMAND"
	exit $ret
}

trap 'err_handler' ERR
# source files
src=$1
# generate image
dst=$2

if [ -z "$3" -o -z "$dst" -o ! -d "$src" ]; then
	echo "command format: $(basename $0) <source> <dest image> <partition size>"
	exit 0
fi

# the size of generate image, get info from parameter.txt
# eg. 0x00040000@0x00016000(rootfs)
# calculate size fo rootfs partition: 0x00040000 * 512 = 128*0x100000 (Bytes)
dst_size="$(( $3 / 1024 / 1024 ))M"

cwd=$(dirname $(readlink -f $0))
export PATH=$cwd:$PATH

rm -f $dst

bin_dir=./
if [ -f $cwd/bin/mkfs.ext4 ];then
	bin_dir=bin
fi

mkdir -p $(dirname $dst)

echo mkfs.ext4 -d $src -r 1 -N 0 -m 5 -L \"\" -O ^64bit,^huge_file $dst \"$dst_size\"
mkfs.ext4 -d $src -r 1 -N 0 -m 5 -L "" -O ^64bit,^huge_file $dst "$dst_size"
if [ $? != 0 ]; then
	echo "*** Maybe you need to increase the filesystem size "
	exit 1
fi
echo "resize2fs -M $dst"
resize2fs -M $dst
echo "e2fsck -fy  $dst"
e2fsck -fy  $dst
echo "tune2fs -m 5  $dst"
tune2fs -m 5  $dst
echo "resize2fs -M $dst"
resize2fs -M $dst