zlogout: clean up logic, dont act without data

[dotfiles.git] / syslinux / update-extlinux.conf

# we are using the fact that this is a sourced sh script to take over and
# handle updating ourselves. config is static and does not need changes.

version=$version-mod
verbose=0

# replicate existing script
everbose() {
	if [ "$verbose" = "0" ]; then
		return
	fi

	echo $*
}

ewarn() {
	echo "WARNING:" $@ >&2
}

eerror() {
	echo "ERROR:" $@ >&2
	return 1
}

usage() {
	echo "usage: $0 [-v|--verbose] [--warn-only]"
}

# NOTE: no-op for most options
while [ $# -gt 0 ]; do
	opt="$1"
	shift
	case "$opt" in
	-v|--verbose)
		verbose=1
		;;
	--warn-only)
		warn_only=1
		;;
	--)
		break
		;;
	-*)
		usage
		exit 1
		;;
	esac
done

src=/usr/share/syslinux/efi64
boot=/boot/EFI/Boot
everbose "Installing binaries from $src to $boot"
cp $src/*.c32 $src/ldlinux.e64 $boot
cp $src/syslinux.efi $boot/bootx64.efi

ids=/usr/share/hwdata/pci.ids
bootids=hdt/pci.ids
apkargs="-q --no-progress"
if ! apk info -e hwids-pci >/dev/null; then
	everbose "Installing hwids-pci"
	if apk $apkargs add hwids-pci; then
		undo_hwids=1
	else
		ewarn $(cat <<EOF
			Unable to install hwids-pci! If update-extlinux is
			being called from syslinux hook during
			installation/upgrade, you will need to run
			update-extlinux after the apk database is unlocked.
			Alternatively, install hwids-pci manually before
			upgrading boot-related packages.
EOF
)
	fi
else
	everbose "Upgrading hwids-pci"
	if ! apk $apkargs upgrade hwids-pci; then
		ewarn "Upgrade failed for hwids-pci, pci.ids may be out of date"
	fi
fi
if [ ! -r "$ids" ]; then
	ewarn "Cannot read $ids, can't update $boot/$bootids"
else
	everbose "Installing $ids to $boot/$bootids"
	cp $ids $boot/$bootids
fi
if [ -n "$undo_hwids" ]; then
	everbose "Deleting hwids-pci"
	apk $apkargs del hwids-pci
fi

# exit from parent script
exit 0