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# overrides meta-updater/classes/image_types_ota.bbclass
# - add do_image_otaimg flags:
#   - dirs, cleandirs: to avoid mktemp, rm, cd, and to also remove at clean
# - override of IMAGE_CMD_otaimg
#   - use the added flags
#   - avoid untar-ing the ostree image, and use OSTREE_ROOTFS
#   - IMGDEPLOYDIR, instead of DEPLOY_DIR_IMAGE

OSTREE_REPO = "${WORKDIR}/ostree-repo"
PHYS_SYSROOT = "${WORKDIR}/ota-sysroot"

do_image_otaimg[dirs] = "${PHYS_SYSROOT}"
do_image_otaimg[cleandirs] = "${PHYS_SYSROOT}"

IMAGE_CMD_otaimg () {
	if ${@bb.utils.contains('IMAGE_FSTYPES', 'otaimg', 'true', 'false', d)}; then
		if [ -z "$OSTREE_REPO" ]; then
			bbfatal "OSTREE_REPO should be set in your local.conf"
		fi

		if [ -z "$OSTREE_OSNAME" ]; then
			bbfatal "OSTREE_OSNAME should be set in your local.conf"
		fi

		if [ -z "$OSTREE_BRANCHNAME" ]; then
			bbfatal "OSTREE_BRANCHNAME should be set in your local.conf"
		fi

		ostree admin --sysroot=${PHYS_SYSROOT} init-fs ${PHYS_SYSROOT}
		ostree admin --sysroot=${PHYS_SYSROOT} os-init ${OSTREE_OSNAME}

		mkdir -p ${PHYS_SYSROOT}/boot/loader.0
		ln -s loader.0 ${PHYS_SYSROOT}/boot/loader

		if [ "${OSTREE_BOOTLOADER}" = "grub" ]; then
			ln -s loader ${PHYS_SYSROOT}/boot/grub
			touch ${PHYS_SYSROOT}/boot/grub/grub.cfg
		elif [ "${OSTREE_BOOTLOADER}" = "u-boot" ]; then
			touch ${PHYS_SYSROOT}/boot/loader/uEnv.txt
		else
			bberror "Invalid bootloader: ${OSTREE_BOOTLOADER}"
		fi;

		ostree_target_hash=$(cat ${OSTREE_REPO}/refs/heads/${OSTREE_BRANCHNAME})

		ostree --repo=${PHYS_SYSROOT}/ostree/repo pull-local --remote=${OSTREE_OSNAME} ${OSTREE_REPO} ${ostree_target_hash}
		export OSTREE_BOOT_PARTITION="/boot"
		kargs_list=""
		for arg in ${OSTREE_KERNEL_ARGS}; do
			kargs_list="${kargs_list} --karg-append=$arg"
		done

		ostree admin --sysroot=${PHYS_SYSROOT} deploy ${kargs_list} --os=${OSTREE_OSNAME} ${ostree_target_hash}

		cp -a ${IMAGE_ROOTFS}/var/sota ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/ || true
		# Create /var/sota if it doesn't exist yet
		mkdir -p ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/sota
		# Ensure the permissions are correctly set
		chmod 700 ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/sota

		cp -a ${OSTREE_ROOTFS}/var/local ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/ || true
		cp -a ${OSTREE_ROOTFS}/usr/homedirs/home ${PHYS_SYSROOT}/ || true
		# Ensure that /var/local exists (AGL symlinks /usr/local to /var/local)
		install -d ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/local
		# Set package version for the first deployment
		target_version=${ostree_target_hash}
		if [ -n "${GARAGE_TARGET_VERSION}" ]; then
			target_version=${GARAGE_TARGET_VERSION}
		elif [ -e "${STAGING_DATADIR_NATIVE}/target_version" ]; then
			target_version=$(cat "${STAGING_DATADIR_NATIVE}/target_version")
		fi
		mkdir -p ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/sota/import
		echo "{\"${ostree_target_hash}\":\"${GARAGE_TARGET_NAME}-${target_version}\"}" > ${PHYS_SYSROOT}/ostree/deploy/${OSTREE_OSNAME}/var/sota/import/installed_versions

		# Calculate image type
		OTA_ROOTFS_SIZE=$(calculate_size `du -ks ${PHYS_SYSROOT} | cut -f 1`  "${IMAGE_OVERHEAD_FACTOR}" "${IMAGE_ROOTFS_SIZE}" "${IMAGE_ROOTFS_MAXSIZE}" `expr ${IMAGE_ROOTFS_EXTRA_SPACE}` "${IMAGE_ROOTFS_ALIGNMENT}")

		if [ $OTA_ROOTFS_SIZE -lt 0 ]; then
			exit -1
		fi
		eval local COUNT=\"0\"
		eval local MIN_COUNT=\"60\"
		if [ $OTA_ROOTFS_SIZE -lt $MIN_COUNT ]; then
			eval COUNT=\"$MIN_COUNT\"
		fi

		# create image
		dd if=/dev/zero of=${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.otaimg seek=${OTA_ROOTFS_SIZE} count=${COUNT} bs=1024
		mkfs.ext4 -O ^64bit ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.otaimg -L otaroot -d ${PHYS_SYSROOT}
		rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.otaimg
		ln -s ${IMGDEPLOYDIR}/${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.otaimg ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.otaimg
		# for forward compatibility
		rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.ota-ext4
		ln -s ${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.otaimg ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.ota-ext4
	fi
}

IMAGE_TYPEDEP_otaimg = "ostree"