# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

#
# Original Author: nick
# Purpose: override of kernel-2.eclass for the linux-libre kernel
#

inherit kernel-2
EXPORT_FUNCTIONS src_unpack

DEBLOB_CHECK="deblob-check"
KERNEL_URI="http://www.linux-libre.fsfla.org/pub/linux-libre/releases/${PV}-libre/linux-${PV}-libre.tar.bz2"
DEBLOB_URI="http://www.linux-libre.fsfla.org/pub/linux-libre/releases/${PV}-libre/${DEBLOB_CHECK}"

check_for_blobs() {
	# usage: check_for_blobs name_of_variable_containing_paths_to_check
	# we want the name of a variable (not just its contents)
	# so can unset it if blobs are found

	[[ -z "${!1}" ]] && return 1

	sh ${DISTDIR}/${DEBLOB_CHECK} ${!1}

	if [ $? -ne 0 ]; then
		ewarn "Warning: A file in ${1} appears to contain blobs."
		ewarn "Disabling ${1} for now."
		eval "${1}=''"
		ewarn "Please report this to http://bugs.gentoo.org/266157"
		return 1
	fi

	return 0
}

kernel-libre_src_unpack() {
	# kernel revision patches included in tarball
	UNIPATCH_LIST_DEFAULT=""

	if [ -n "${UNIPATCH_LIST_GENPATCHES}" || -n "${UNIPATCH_LIST}" ]; then
		echo "Checking all patches are clean of blobs"
		check_for_blobs "UNIPATCH_LIST_GENPATCHES"
		check_for_blobs "UNIPATCH_LIST"
	fi

	# universal_unpack expects a different kernel tarball name
	expected_tarball=${DISTDIR}/linux-${OKV}.tar.bz2

	# temporarily move any preexisting kernel tarball
	moved_tarball=${expected_tarball}-original
	[[ -f $expected_tarball ]] && \
		mv $expected_tarball $moved_tarball

	ln -sf ${DISTDIR}/linux-${OKV}-libre.tar.bz2 $expected_tarball

	kernel-2_src_unpack

	rm $expected_tarball

	# put any preexisting tarball back in its original location
	[[ -f $moved_tarball ]] && \
		mv $moved_tarball $expected_tarball
}