gennet/gen_disks.sh

#!/bin/sh

# Run as root.

set -eux

mount="$(mktemp --directory)"
trap "rmdir $mount" EXIT

modprobe loop

origdir="$(pwd)"

for dir in output/*/; do
	pushd $dir
	cp --preserve=mode,ownership "$origdir/dummydisk.img" "./disk.img"
	loop="$(losetup --partscan --show --find ./disk.img)"
	mount -t ext4 "${loop}p2" "$mount"
	while read what where; do
		cp "$what" "$mount$where"
	done << END
		bird.conf /etc/bird.conf
		interfaces /etc/network/interfaces
		hosts /etc/hosts
		hostname /etc/hostname
		mactab /etc/mactab
END
	umount "$mount"
	losetup -d "$loop"
	popd
done