src/kernel-install/00-entry-directory.install

#!/usr/bin/env bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# systemd 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 2.1 of the License, or
# (at your option) any later version.
#
# systemd 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 Lesser General Public License
# along with systemd; If not, see <http://www.gnu.org/licenses/>.

COMMAND="$1"
KERNEL_VERSION="$2"
ENTRY_DIR_ABS="$3"
KERNEL_IMAGE="$4"
INITRD_OPTIONS_START="5"

if ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
    exit 0
fi

if [[ $COMMAND != add ]]; then
    exit 0
fi

# If the boot dir exists (e.g. $ESP/<machine-id>),
# create the entry directory ($ESP/<machine-id>/<kernel-version>).
# This is the only function of this plugin.
MACHINE_ID_DIR="${ENTRY_DIR_ABS%/*}"
if ! [ -d "$MACHINE_ID_DIR" ]; then
    exit 0
fi

if [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ]; then
    echo "+mkdir -v -p $ENTRY_DIR_ABS"
    exec mkdir -v -p "$ENTRY_DIR_ABS"
else
    exec mkdir -p "$ENTRY_DIR_ABS"
fi