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#!/bin/sh
#
# Copyright (C) 2014 Colin Walters <walters@verbum.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation; either version 2 of the licence or (at
# your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General
# Public License along with this library. If not, see <https://www.gnu.org/licenses/>.
# Gracefully exit if ostree is not installed, or there's
# no system repository initialized.
if ! which ostree >/dev/null 2>/dev/null; then
exit 0
fi
if ! test -d /ostree/repo; then
exit 0
fi
# Gracefully exit if the grub2 configuration has BLS enabled,
# and the installed version has support for the blscfg module.
# Since there is no need to create menu entries for that case.
# See: https://src.fedoraproject.org/rpms/grub2/c/7c2bab5e98d
. /etc/default/grub
if test -f /boot/grub2/.grub2-blscfg-supported && \
test "${GRUB_ENABLE_BLSCFG}" = "true"; then
exit 0
fi
# Make sure we're in the right environment
if ! test -n "${GRUB_DEVICE}"; then
echo "This script must be run as a child of grub2-mkconfig" 1>&2
exit 1
fi
set -e
# Pick up stuff from grub's helper that we want to inject into our
# generated bootloader configuration. Yes, this is pretty awful, but
# it's a lot better than reimplementing the config-generating bits of
# OSTree in shell script.
. /usr/share/grub/grub-mkconfig_lib
DEVICE=${GRUB_DEVICE_BOOT:-${GRUB_DEVICE}}
GRUB2_BOOT_DEVICE_ID="$(grub_get_device_id ${DEVICE})"
export GRUB2_BOOT_DEVICE_ID
GRUB2_PREPARE_ROOT_CACHE="$(prepare_grub_to_access_device ${DEVICE})"
export GRUB2_PREPARE_ROOT_CACHE
exec ostree admin instutil grub2-generate
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