ffho-packages/ffpb/ffpb-node-tuning/files/etc/uci-defaults/zz~-ffpb-upgrade

#!/bin/sh


UPGRADE_DIR=/lib/gluon/upgrade
VERSION_DIR=/lib/gluon/version

version_of() {
	opkg status "ffpb-$1" | awk '/^Version: / { print $2 }'
}

oldversion_of() {
	cat "$VERSION_DIR"/"$1" 2>/dev/null
}

do_dir() {
	[ -d "$1" ] || return

	local s
	for s in "$1"/*; do "$s"; done
}

do_component() {
	local component="$1"
	local version="$(version_of "$component")"
	[ "$version" ] || return 255

	(
		cd "$component"

		local oldversion="$(oldversion_of "$component")"
		if [ -z "$oldversion" ]; then
			do_dir initial
		fi

		do_dir invariant

		cd ..
	)
}


cd "$UPGRADE_DIR"

for component in *; do
	[ "$component" != 'core' ] || continue
	do_component "$component"
	[ "$?" -ne "0" -o "$?" -ne "255" ] || exit 1
done

exit 0