hook


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#!/usr/bin/ash

device_identify() {
	local dev="$1"

	case "$dev" in
		UUID=*)
			echo "/dev/disk/by-uuid/${dev#UUID=}"
			;;
		PARTUUID=*)
			echo "/dev/disk/by-partuuid/${dev#PARTUUID=}"
			;;
		LABEL=*)
			echo "/dev/disk/by-label/${dev#LABEL=}"
			;;
		PARTLABEL=*)
			echo "/dev/disk/by-partlabel/${dev#PARTLABEL=}"
			;;
		/dev/*)
			echo "$dev"
			;;
		*)
			echo "[neoshy] ERROR: Unknown device or device format: $dev" >&2
			exit 1
			;;
	esac
}

run_hook() {
    echo "[neoshy] Starting hook"

    src_rootfs="$(getarg src_rootfs)"

	if [ -z "$src_rootfs" ]; then
        echo "[neoshy] ERROR: Missing required parameter: src_rootfs" >&2
        exit 1
    fi

	src_dev="${src_rootfs%%:*}"
	src_img="${src_rootfs#*:}"

	if [ -z "$src_dev" ] || [ -z "$src_img" ]; then
        echo "[neoshy] ERROR: Invalid src_rootfs format" >&2
        exit 1
    fi

	real_dev=$(device_identify "$src_dev")
	echo "[neoshy] Mounting device: $real_dev"
	mkdir -p /mnt
	mount $real_dev /mnt

	if [ ! -f "/mnt$src_img" ]; then
        echo "[neoshy] ERROR: Image file not found: /mnt$src_img" >&2
        exit 1
    fi

	echo "[neoshy] Attaching loop device for: /mnt$src_img"
	losetup --show --find "/mnt$src_img"

	echo "[neoshy] Finishing hook"
}