livecd-rootfs/live-build/ubuntu-core/hooks/09-move-kernel-to-device-tar.binary

#!/bin/sh
#
# move the kernel out into a new device tarfile with system/boot 

set -e

echo "I: Moving kernel into device tarball"

HERE="$(pwd)"
TMPDIR="$(mktemp -d)"
mkdir -p $TMPDIR/system/

# cp files, we can't simply use tar --transform as it changes the symlink target
(
 cd binary/boot/filesystem.dir 
 cp -ar --parent boot/vmlinu?-* boot/initrd.img-* boot/abi-* boot/System.map-* $TMPDIR/system/
 cp -ar --parent lib/modules/ $TMPDIR/system/
 if [ -e vmlinu? ] && [ -e initrd.img ]; then
     cp -ar --parent vmlinu? initrd.img $TMPDIR/system
 fi
)

# and tar it up
(
 cd $TMPDIR
 tar -c -z -f $HERE/device.tar.gz system
)
rm -rf $TMPDIR

# remove files from the root filesystem
rm -f binary/boot/filesystem.dir/boot/vmlinu?-*
rm -f binary/boot/filesystem.dir/boot/initrd.img-*
rm -f binary/boot/filesystem.dir/boot/abi-*
rm -f binary/boot/filesystem.dir/boot/System.map-*
rm -f binary/boot/filesystem.dir/initrd.img
rm -f binary/boot/filesystem.dir/vmlinu?
rm -rf binary/boot/filesystem.dir/lib/modules