livecd-rootfs/live-build/ubuntu-cpc/hooks/032-root-squashfs.binary

#!/bin/bash -ex
# vi: ts=4 noexpandtab
#
# Generate a squashfs root and manifest

case $IMAGE_TARGETS in
	""|*squashfs*)
		;;
	*)
		echo "Skipping squashfs build"
		exit 0
		;;
esac

if [ -n "$SUBARCH" ]; then
	echo "Skipping rootfs build for subarch flavor build"
	exit 0
fi

. config/functions

mkdir binary/boot/squashfs.dir
cp -a chroot/* binary/boot/squashfs.dir

setup_mountpoint binary/boot/squashfs.dir

chroot binary/boot/squashfs.dir dpkg-divert --local --rename /usr/sbin/grub-probe
chroot binary/boot/squashfs.dir touch /usr/sbin/grub-probe
chroot binary/boot/squashfs.dir chmod +x /usr/sbin/grub-probe

env DEBIAN_FRONTEND=noninteractive chroot binary/boot/squashfs.dir apt-get --purge remove --assume-yes '^linux-.*' 'linux-base+'
env DEBIAN_FRONTEND=noninteractive chroot binary/boot/squashfs.dir apt-get --purge remove --assume-yes '^grub-.*'
env DEBIAN_FRONTEND=noninteractive chroot binary/boot/squashfs.dir apt-get autoremove --purge --assume-yes
chroot binary/boot/squashfs.dir mkdir /lib/modules

chroot binary/boot/squashfs.dir rm /usr/sbin/grub-probe
chroot binary/boot/squashfs.dir dpkg-divert --remove --local --rename /usr/sbin/grub-probe

mv resolv.conf.tmp "binary/boot/squashfs.dir/etc/resolv.conf"
umount "binary/boot/squashfs.dir/proc"
umount "binary/boot/squashfs.dir/sys"
umount -R "binary/boot/squashfs.dir/dev"
umount "binary/boot/squashfs.dir/tmp"
umount "binary/boot/squashfs.dir/var/lib/apt"
umount "binary/boot/squashfs.dir/var/cache/apt"

squashfs_f="${PWD}/livecd.ubuntu-cpc.squashfs"
squashfs_f_manifest="${squashfs_f}.manifest"

dpkg-query --admindir=binary/boot/squashfs.dir/var/lib/dpkg -W > ${squashfs_f_manifest}

(cd "binary/boot/squashfs.dir/" &&
      mksquashfs . ${squashfs_f} \
        -no-progress -xattrs -comp xz )