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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
#
# This file is part of systemd.
#
# Copyright 2013 Harald Hoyer
#
# 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/>.
usage()
{
echo "Usage:" >&2
echo " $0 add <kernel-version> <kernel-image>" >&2
echo " $0 remove <kernel-version> <kernel-image>" >&2
}
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
COMMAND="$1"
KERNEL_VERSION="$2"
KERNEL_IMAGE="$3"
if [[ -f /etc/os-release ]]; then
. /etc/os-release
fi
if ! [[ $ID ]]; then
echo "Could not determine the distribution name from /etc/os-release." >&2
echo "Please specify ID=... in /etc/os-release. See man:os-release(5)" >&2
exit 1
fi
if [[ -f /etc/machine-id ]]; then
read MACHINE_ID < /etc/machine-id
fi
if ! [[ $MACHINE_ID ]]; then
echo "Could not determine your machine ID from /etc/machine-id." >&2
echo "Please run 'systemd-machine-id-setup' as root. See man:machine-id(5)" >&2
exit 1
fi
if [[ -f /etc/kernel/cmdline ]]; then
readarray -t BOOT_OPTIONS < /etc/kernel/cmdline
fi
if ! [[ ${BOOT_OPTIONS[*]} ]]; then
readarray -t BOOT_OPTIONS < /proc/cmdline
fi
if ! [[ $BOOT_OPTIONS ]]; then
echo "Could not determine the kernel command line parameters." >&2
echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
exit 1
fi
if [[ ! $COMMAND ]] || [[ ! $KERNEL_VERSION ]]; then
usage
exit 1
fi
BOOT_DIR="/$MACHINE_ID/$KERNEL_VERSION"
BOOT_DIR_ABS="/boot$BOOT_DIR"
LOADER_ENTRY="/boot/loader/entries/$MACHINE_ID-$KERNEL_VERSION.conf"
ret=0
readarray -t PLUGINS < <(
dropindirs_sort ".install" \
"/etc/kernel/install.d" \
"/usr/lib/kernel/install.d"
)
case $COMMAND in
add)
if [[ ! $KERNEL_IMAGE ]]; then
usage
exit 1
fi
mkdir -p "$BOOT_DIR_ABS" || {
echo "Could not create boot directory '$BOOT_DIR_ABS'." >&2
exit 1
}
for f in "${PLUGINS[@]}"; do
[[ -x $f ]] && "$f" add "$KERNEL_VERSION" "$BOOT_DIR_ABS"
((ret+=$?))
done
cp --preserve "$KERNEL_IMAGE" "$BOOT_DIR_ABS/linux" || {
echo "Could not copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'." >&2
exit 1
}
mkdir -p "${LOADER_ENTRY%/*}" || {
echo "Could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2
exit 1
}
{
echo "title $PRETTY_NAME"
echo "version $KERNEL_VERSION"
echo "machine-id $MACHINE_ID"
echo "options ${BOOT_OPTIONS[*]}"
echo "linux $BOOT_DIR/linux"
[[ -f $BOOT_DIR_ABS/initrd ]] && \
echo "initrd $BOOT_DIR/initrd"
} > "$LOADER_ENTRY" || {
echo "Could not create loader entry '$LOADER_ENTRY'." >&2
exit 1
}
;;
remove)
for f in "${PLUGINS[@]}"; do
[[ -x $f ]] && "$f" remove "$KERNEL_VERSION" "$BOOT_DIR_ABS"
((ret+=$?))
done
rm -rf "$LOADER_ENTRY" "$BOOT_DIR_ABS"
;;
*)
usage
exit 1
;;
esac
((ret+=$?))
exit $ret
|
