#!/bin/bash -xe
# %scriptdir/kernel-subpackage-build %kernel_package_name %rpm_kver-%rpm_krel %package_name-%version-%release

scriptdir=$(dirname $0)
kernel_package_name=$1
kernel_nvrq=$(echo $1-$2 | sed -e 's/[.]/[.]/g')
package_nvr=$3


set -o pipefail
install -d -m 0755 $RPM_BUILD_ROOT/boot

$scriptdir/splitflist $kernel_package_name kernel.flist kernel-ghost.flist
echo Missing files:
cat kernel-ghost.flist

rpm -q --qf '%{PREIN}' $kernel_package_name | sed -e "s/$kernel_nvrq/$package_nvr/g" > prein.sh
rpm -q --qf '%{PREUN}' $kernel_package_name | sed -e "s/$kernel_nvrq/$package_nvr/g" > preun.sh
rpm -q --qf '%{POSTIN}' $kernel_package_name | sed -e "s/$kernel_nvrq/$package_nvr/g" > postin.sh
rpm -q --qf '%{POSTUN}' $kernel_package_name | sed -e "s/$kernel_nvrq/$package_nvr/g" > postun.sh

[ -z "$(rpm -q --triggers $kernel_package_name)" ] # not handled

KREL=$(cat kernel.flist | grep ^/lib/modules | { sort -r ||: ;} | head -n 1 | sed -e s,^/lib/modules/,, -e 's,/.*,,')

$scriptdir/mergedep $KREL > modules.dep


$scriptdir/moddep modules.dep request-modules modules

$scriptdir/modflist kernel.flist modules modules.flist /lib/modules/$KREL/modules.builtin
cat kernel.flist | grep -v ^/lib/modules >> modules.flist
[ -d /lib/modules/$KREL/vdso ] && echo /lib/modules/$KREL/vdso >> modules.flist ||:
echo /lib/modules/$KREL/modules.* | tr ' ' '\n' >> modules.flist

tar -C / -cf- -T modules.flist | tar -C $RPM_BUILD_ROOT -xvf-

moderr="$(/usr/sbin/depmod -b $RPM_BUILD_ROOT -e -F /boot/System.map-$KREL $KREL 2>&1 > /dev/null)"

if [ "$moderr" ] ; then
echo Picked modules have errors:
echo $moderr
exit 1
fi

echo "%defattr(-,root,root)" > subpackage.flist
cat kernel.flist | grep -v ^/lib/modules >> subpackage.flist
echo /lib/modules/$KREL >> subpackage.flist
cat kernel-ghost.flist | sed -e 's/^/%ghost /' >> subpackage.flist

cat kernel-ghost.flist | while read ghost ; do
	case $ghost in
		/boot/image-%build_flavor | /boot/vmlinux-%build_flavor | /boot/vmlinuz-%build_flavor | \
		/boot/Image-%build_flavor | /boot/initrd-%build_flavor)
			ln -s $(basename $ghost -%build_flavor)-$KREL $RPM_BUILD_ROOT$ghost
			;;
		/boot/vmlinux | /boot/vmlinuz | /boot/zImage | /boot/Image | /boot/image | /boot/initrd)
			ln -s $ghost-$KREL $RPM_BUILD_ROOT$ghost
			;;
		/boot/vmlinux-$KREL)
			[ -f /boot/vmlinux-$KREL.gz ] && touch vmlinux-$KREL
			;;
		/boot/initrd-$KREL | /boot/initrd-$KREL-kdump)
			# Create a dummy initrd with roughly the size the real one will have.
			# That way, YaST will know that this package requires some additional
			# space in /boot.
			dd if=/dev/zero of=$RPM_BUILD_ROOT$ghost \
			      bs=1024 seek=2047 count=1
			chmod 0600 $RPM_BUILD_ROOT$ghost
			;;
		/lib/modules/$KREL/modules.*)
			[ -f $RPM_BUILD_ROOT$ghost ]
			;;
		*)
			echo Missing file "$ghost" not handled.
			exit 1;
			;;
	esac
done