#!/bin/bash
#
# Small helper script to enable EfiFs drivers using efibootmgr
# Copyright (C) 2020 Robert Scheck <robert@fedoraproject.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
[ $# -lt 1 ] && { echo "Usage: $(readlink -f "$0") </path/to/driver.efi>" >&2; exit 1; }
command -v efibootmgr &> /dev/null || { echo "Error: efibootmgr(1) is missing!" >&2; exit 1; }
for file in $@; do
if [ -f "${file}" ]; then
drv="$(readlink -f "${file}")"
esp="/boot/efi"
drv="${drv/$esp/}"
lbl="${drv##*/}"
lbl="${lbl%%.*}"
efi="${drv//\//\\}"
dev="$(findmnt -n -o source -T "${esp}")"
part=${dev#${dev%%[0-9]*}}
pdev="$(lsblk -dpno PKNAME "${dev}")"
efibootmgr -r -c -d "${pdev}" -p "${part}" -L "EfiFs ${lbl}" -l "${efi}" -q
else
echo "$(readlink -f "${file}"): File does not exist, skipping." >&2;
fi
done
efibootmgr -r -v