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acorinstaller/bootloader-config-arm64

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+#!/bin/bash
+
+CHROOT=$(mount | grep proc | grep calamares | awk '{print $3}' | sed -e "s#/proc##g")
+
+# Set secure permissions for the initramfs if we're configuring
+# full-disk-encryption. The initramfs is re-generated later in the
+# installation process so we only set the permissions snippet without
+# regenerating the initramfs right now:
+if [ "$(mount | grep $CHROOT" " | cut -c -16)" = "/dev/mapper/luks" ]; then
+    echo "UMASK=0077" > $CHROOT/etc/initramfs-tools/conf.d/initramfs-permissions
+fi
+
+echo "Running bootloader-config..."
+
+if [ -d /sys/firmware/efi/efivars ]; then
+    echo " * Installing grub-efi (uefi)..."
+    DEBIAN_FRONTEND=noninteractive chroot $CHROOT apt-get -y install grub-efi-arm64 cryptsetup keyutils
+else
+    echo " * install grub... (bios)"
+    DEBIAN_FRONTEND=noninteractive chroot $CHROOT apt-get -y install grub-pc cryptsetup keyutils
+fi