1#!/bin/sh -ex
2
3mountpoint -q /
4[ ! -e hdc.img.dir ]
5
6cleanup()
7{
8	trap - EXIT
9	if mountpoint -q hdc.img.dir; then
10		umount -d hdc.img.dir
11	fi
12	mountpoint -q hdc.img.dir ||
13		rm -rf hdc.img.dir
14	exit $@
15}
16
17trap 'cleanup $?' EXIT
18trap 'cleanup 1' HUP PIPE INT QUIT TERM
19
20size=$(du -ks hdc.dir | sed -rn 's/^([0-9]+).*/\1/p')
21[ "$size" -gt 0 ]
22
23rm -f hdc.img
24dd if=/dev/zero of=hdc.img count=1 bs=1024 seek=$(($size*2))
25mkfs.ext3 -q -F -b 1024 -i 4096 hdc.img
26tune2fs -c 0 -i 0 hdc.img
27mkdir hdc.img.dir
28mount -o loop hdc.img hdc.img.dir
29cp -a hdc.dir/* hdc.img.dir/
30umount -d hdc.img.dir
31