#!/bin/sh
set -e

#DEBHELPER#

if dpkg --compare-versions "$2" lt-nl "3.0.3-3~" ; then
	for d in /etc/dkms/template-dkms-mkdeb/debian /etc/dkms/template-dkms-mkdeb /etc/dkms/template-dkms-mkbmdeb/debian /etc/dkms/template-dkms-mkbmdeb
	do
		test ! -d $d || rmdir --ignore-fail-on-non-empty $d
	done
fi

if dpkg --compare-versions "$2" lt-nl "3.0.10-8~" ; then
	for f in /boot/*.old-dkms
	do
		test ! -f "$f" || rm -fv "$f"
	done
fi

if dpkg --compare-versions "$2" lt-nl "3.0.12" ; then
	for d in /lib/modules/*
	do
		# clean up leftover depmod files if modules.dep is empty
		# i.e. dkms called depmod after removing the last kernel module
		if [ -f "$d/modules.dep" ] && [ ! -s "$d/modules.dep" ]; then
			rm -fv \
				"$d/modules.alias" \
				"$d/modules.dep" \
				"$d/modules.devname" \
				"$d/modules.softdep" \
				"$d/modules.symbols" \
				"$d"/modules.*.bin
			rmdir --ignore-fail-on-non-empty "$d"
			test -d "$d" || echo "removed directory $d"
		fi
	done
fi

if dpkg --compare-versions "$2" lt-nl "3.0.12-2~" ; then
	# missing $arch in the path, #1036033
	rm -rfv /var/lib/dkms/*/*/[1-6].*/module/
	rm -rfv /var/lib/dkms/*/*/[1-6].*/log/

	# /usr/src/$module-$version was already removed,
	# but /var/lib/dkms/$module/$version/source still points there
	for source in /var/lib/dkms/*/*/source
	do
		test -h "$source" || continue
		test -f "$source/dkms.conf" || rm -fv "$source"
	done

	for mdir in /var/lib/dkms/*/
	do
		test -d "$mdir" || continue
		find "$mdir" -depth -type d -exec sh -c 'd="{}"; rmdir --ignore-fail-on-non-empty "$d" ; test -d "$d" || echo "removed directory $d"' \;
	done
fi