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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/>.
export LC_COLLATE=C
COMMAND="$1"
KERNEL_VERSION="$2"
KERNEL_IMAGE="$3"
[[ -f /etc/os-release ]] && . /etc/os-release
if ! [[ $ID ]]; then
echo "Can't determine the name of your distribution. Please create /etc/os-release." >&2
echo "See man:os-release(5)" >&2
exit 1
fi
[[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
if ! [[ $MACHINE_ID ]]; then
echo "Can't determine your machine id. Please create /etc/machine-id!" >&2
echo "See man:machine-id(5)" >&2
exit 1
fi
if [[ -f /etc/kernel/cmdline ]]; then
readarray -t BOOT_OPTIONS < /etc/kernel/cmdline
fi
if ! [[ "${BOOT_OPTIONS[@]}" ]]; then
readarray -t BOOT_OPTIONS < /proc/cmdline
fi
if ! [[ $BOOT_OPTIONS ]]; then
echo "Can't determine the kernel command line parameters." >&2
echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
exit 1
fi
usage()
{
{
echo "Usage:"
echo " $0 add <kernel-version> <kernel-image>"
echo " $0 remove <kernel-version> <kernel-image>"
} >&2
}
if ! ( [[ $COMMAND ]] && [[ $KERNEL_VERSION ]] && [[ $KERNEL_IMAGE ]] ); then
usage
exit 1
fi
BOOT_DIR="/${MACHINE_ID}/${KERNEL_VERSION}"
BOOT_DIR_ABS="/boot${BOOT_DIR}"
LOADER_ENTRY="/boot/loader/entries/${MACHINE_ID}-${KERNEL_VERSION}.conf"
ret=0
dropindirs_sort()
{
suffix=$1; shift
readarray -t files< <(
for d in "$@"; do
for i in "${d}/"*${suffix}; do
[[ -e $i ]] && echo ${i##*/}
done
done | sort -Vu
)
for f in "${files[@]}"; do
for d in "$@"; do
if [[ -e "$d/$f" ]]; then
echo "$d/$f"
continue 2
fi
done
done
}
readarray -t PLUGINS < <(
dropindirs_sort ".install" \
"/etc/kernel/install.d" \
"/usr/lib/kernel/install.d"
)
case "$COMMAND" in
add)
mkdir -p "$BOOT_DIR_ABS" || exit 1
for f in "${PLUGINS[@]}"; do
[[ -x $f ]] && "$f" add "$KERNEL_VERSION" "$BOOT_DIR_ABS"
((ret+=$?))
done
if ! cp --preserve "$KERNEL_IMAGE" "$BOOT_DIR_ABS"/linux; then
echo "Can't copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'!" >&2
fi
[[ -d /boot/loader/entries ]] || mkdir -p /boot/loader/entries
{
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"
:
} > $LOADER_ENTRY
((ret+=$?))
if ! [[ -f $LOADER_ENTRY ]]; then
echo "Could not create '$LOADER_ENTRY'!" >&2
fi
;;
remove)
for f in "${PLUGINS[@]}"; do
[[ -x $f ]] && "$f" remove "$KERNEL_VERSION" "$BOOT_DIR_ABS"
((ret+=$?))
done
rm -fr "$BOOT_DIR_ABS"
rm -f "$LOADER_ENTRY"
;;
*)
usage
ret=1;;
esac
((ret+=$?))
exit $ret
|
