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#!/bin/bash -e

kernels=()
dracut_update=0

while read -r line; do
    if [[ $line != 'usr/lib/modules/'+([^/])'/pkgbase' ]]; then
		dracut_update=1 # Dracut files have been updated
        continue 
    fi

    read -r pkgbase < "/${line}"
	kernels+=("${pkgbase}")
done

if (( dracut_update )); then
	kernels=()
	for file in /lib/modules/*/pkgbase; do
		if read -r pkgbase &> /dev/null < "$file"; then
			kernels+=("${pkgbase}")
		fi
	done
fi

for kernel in "${kernels[@]}"; do
	path="$(grep -lE "^${kernel}\$" /usr/lib/modules/*/pkgbase)"
	version=$(basename "${path%/pkgbase}")
    read -r pkgbase < "$path"

    install -Dm0644 "/${path%'/pkgbase'}/vmlinuz" "/boot/vmlinuz-${pkgbase}"

	echo ":: Building initramfs for $kernel-$version"
	dracut -f --no-hostonly-cmdline "/boot/initramfs-${kernel}.img" --kver "${version}"
	echo ":: Building fallback initramfs for $kernel-$version"
	dracut -f -N "/boot/initramfs-${kernel}-fallback.img" --kver "${version}"
done