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#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.


set -e

# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="Installs grub-pc into binary"
USAGE="${PROGRAM} [--force]"

# Processing arguments and configuration files
Init_config_data "${@}"

if [ "${LB_BOOTLOADER_BIOS}" != "grub-pc" ]; then
	exit 0
fi

if In_list "${LB_IMAGE_TYPE}" hdd netboot; then
	exit 0
fi

Echo_message "Begin installing grub-pc..."

# NOTE: We rely on `binary_grub_cfg` to generate grub.cfg and other configuration files!

# Requiring stage file
Require_stagefiles config bootstrap

# Checking stage file
Check_stagefile

# Acquire lock file
Acquire_lockfile

# Check architecture
Check_architectures amd64 i386
Check_crossarchitectures

# Checking depends
Check_package chroot /usr/bin/grub-mkimage grub-pc

# Restoring cache
Restore_package_cache binary

# Installing depends
Install_packages

# Copying templates
mkdir -p binary/boot/grub/i386-pc

case ${LB_IMAGE_TYPE} in
	iso|iso-hybrid)
		FILES="chroot/usr/lib/grub/i386-pc/*.mod chroot/usr/lib/grub/i386-pc/*.lst chroot/usr/lib/grub/i386-pc/efiemu??.o chroot/usr/share/grub/*.pf2"
		;;

	hdd|tar)
		FILES="chroot/usr/lib/grub/i386-pc/*"
		;;
esac

if [ "${LB_BUILD_WITH_CHROOT}" = "false" ]
then
	FILES="$(echo ${FILES} | sed -e 's|chroot||g')"
fi

# Copying grub
cp ${FILES} binary/boot/grub/i386-pc

# Create eltorito image for ISO cases
if [ "${LIVE_IMAGE_TYPE}" = "iso" ] || [ "${LIVE_IMAGE_TYPE}" = "iso-hybrid" ]; then

	cat > binary.sh << EOF
#!/bin/sh

INPUT_DIR="/usr/lib/grub/i386-pc"

# build core.img
CORE_IMG=\$(mktemp)
grub-mkimage -d \${INPUT_DIR} -o \${CORE_IMG} -O i386-pc --prefix=/boot/grub biosdisk iso9660

# build grub_eltorito image
cat \${INPUT_DIR}/cdboot.img \${CORE_IMG} > grub_eltorito

rm -f \${CORE_IMG}
EOF

	case "${LB_BUILD_WITH_CHROOT}" in
		true)
			mv binary.sh chroot
			Chroot chroot "sh binary.sh"
			mv chroot/grub_eltorito binary/boot/grub/grub_eltorito
			rm -f chroot/binary.sh
			;;

		false)
			sh binary.sh
			mv grub_eltorito binary/boot/grub/grub_eltorito
			rm -f binary.sh
			;;
	esac
fi

# Saving cache
Save_package_cache binary

# Removing depends
Remove_packages

# Creating stage file
Create_stagefile