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#!/bin/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+
#
# 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/>.
SKIP_REMAINING=77
usage()
{
echo "Usage:"
echo " $0 add KERNEL-VERSION KERNEL-IMAGE [INITRD-FILE ...]"
echo " $0 remove KERNEL-VERSION"
}
dropindirs_sort()
{
local suffix=$1; shift
local -a files
local f d i
readarray -t files <<<"$(
for d in "$@"; do
for i in "$d/"*"$suffix"; do
if [[ -e "$i" ]]; then
echo "${i##*/}"
fi
done
done | sort -Vu
)"
for f in "${files[@]}"; do
for d in "$@"; do
if [[ -e "$d/$f" ]]; then
echo "$d/$f"
continue 2
fi
done
done
}
export LC_COLLATE=C
for i in "$@"; do
if [ "$i" == "--help" -o "$i" == "-h" ]; then
usage
exit 0
fi
done
if [[ "${0##*/}" == 'installkernel' ]]; then
COMMAND='add'
# make install doesn't pass any parameter wrt initrd handling
INITRD_OPTIONS=()
else
COMMAND="$1"
shift
INITRD_OPTIONS=( "${@:3}" )
fi
KERNEL_VERSION="$1"
KERNEL_IMAGE="$2"
if [[ -f /etc/machine-id ]]; then
read MACHINE_ID < /etc/machine-id
fi
if [[ ! $COMMAND ]] || [[ ! $KERNEL_VERSION ]]; then
echo "Not enough arguments" >&2
exit 1
fi
if ! [[ $MACHINE_ID ]]; then
BOOT_DIR_ABS=$(mktemp -d /tmp/kernel-install.XXXXX) || exit 1
trap "rm -rf '$BOOT_DIR_ABS'" EXIT INT QUIT PIPE
elif [[ -d /efi/loader/entries ]] || [[ -d /efi/$MACHINE_ID ]]; then
BOOT_DIR_ABS="/efi/$MACHINE_ID/$KERNEL_VERSION"
elif [[ -d /boot/loader/entries ]] || [[ -d /boot/$MACHINE_ID ]]; then
BOOT_DIR_ABS="/boot/$MACHINE_ID/$KERNEL_VERSION"
elif [[ -d /boot/efi/loader/entries ]] || [[ -d /boot/efi/$MACHINE_ID ]]; then
BOOT_DIR_ABS="/boot/efi/$MACHINE_ID/$KERNEL_VERSION"
elif mountpoint -q /efi; then
BOOT_DIR_ABS="/efi/$MACHINE_ID/$KERNEL_VERSION"
elif mountpoint -q /boot/efi; then
BOOT_DIR_ABS="/boot/efi/$MACHINE_ID/$KERNEL_VERSION"
else
BOOT_DIR_ABS="/boot/$MACHINE_ID/$KERNEL_VERSION"
fi
export KERNEL_INSTALL_MACHINE_ID=$MACHINE_ID
ret=0
readarray -t PLUGINS <<<"$(
dropindirs_sort ".install" \
"/etc/kernel/install.d" \
"/usr/lib/kernel/install.d"
)"
case $COMMAND in
add)
if [[ ! "$KERNEL_IMAGE" ]]; then
echo "Command 'add' requires an argument" >&2
exit 1
fi
mkdir -p "$BOOT_DIR_ABS" || {
echo "Could not create boot directory '$BOOT_DIR_ABS'." >&2
exit 1
}
for f in "${PLUGINS[@]}"; do
if [[ -x $f ]]; then
"$f" add "$KERNEL_VERSION" "$BOOT_DIR_ABS" "$KERNEL_IMAGE" "${INITRD_OPTIONS[@]}"
x=$?
if [[ $x == $SKIP_REMAINING ]]; then
ret=0
break
fi
((ret+=$x))
fi
done
if ! [[ $MACHINE_ID ]] && ! rmdir "$BOOT_DIR_ABS"; then
echo "Warning: In kernel-install plugins, requiring BOOT_DIR_ABS to be preset is deprecated." >&2
echo " All plugins should not put anything in BOOT_DIR_ABS if the environment" >&2
echo " variable KERNEL_INSTALL_MACHINE_ID is empty." >&2
rm -rf "$BOOT_DIR_ABS"
((ret+=$?))
fi
;;
remove)
for f in "${PLUGINS[@]}"; do
if [[ -x $f ]]; then
"$f" remove "$KERNEL_VERSION" "$BOOT_DIR_ABS"
x=$?
if [[ $x == $SKIP_REMAINING ]]; then
ret=0
break
fi
((ret+=$x))
fi
done
rm -rf "$BOOT_DIR_ABS"
((ret+=$?))
;;
*)
echo "Unknown command '$COMMAND'" >&2
exit 1
;;
esac
exit $ret
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