diff options
Diffstat (limited to 'src/kernel-install/90-loaderentry.install')
| -rwxr-xr-x | src/kernel-install/90-loaderentry.install | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/kernel-install/90-loaderentry.install b/src/kernel-install/90-loaderentry.install new file mode 100755 index 0000000..41a0553 --- /dev/null +++ b/src/kernel-install/90-loaderentry.install @@ -0,0 +1,165 @@ +#!/bin/sh +# -*- 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 <https://www.gnu.org/licenses/>. + +set -e + +COMMAND="${1:?}" +KERNEL_VERSION="${2:?}" +ENTRY_DIR_ABS="${3:?}" +KERNEL_IMAGE="$4" +INITRD_OPTIONS_SHIFT=4 + +[ "$KERNEL_INSTALL_LAYOUT" = "bls" ] || exit 0 + +MACHINE_ID="$KERNEL_INSTALL_MACHINE_ID" +ENTRY_TOKEN="$KERNEL_INSTALL_ENTRY_TOKEN" +BOOT_ROOT="$KERNEL_INSTALL_BOOT_ROOT" + +BOOT_MNT="$(stat -c %m "$BOOT_ROOT")" +if [ "$BOOT_MNT" = '/' ]; then + ENTRY_DIR="$ENTRY_DIR_ABS" +else + ENTRY_DIR="${ENTRY_DIR_ABS#"$BOOT_MNT"}" +fi + +case "$COMMAND" in + remove) + [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ] && \ + echo "Removing $BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION*.conf" + exec rm -f \ + "$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION.conf" \ + "$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION+"*".conf" + ;; + add) + ;; + *) + exit 0 + ;; +esac + +if [ -f /etc/os-release ]; then + # shellcheck source=/dev/null + . /etc/os-release +elif [ -f /usr/lib/os-release ]; then + # shellcheck source=/dev/null + . /usr/lib/os-release +fi + +[ -n "$PRETTY_NAME" ] || PRETTY_NAME="Linux $KERNEL_VERSION" + +SORT_KEY="$IMAGE_ID" +[ -z "$SORT_KEY" ] && SORT_KEY="$ID" + +if [ -n "$KERNEL_INSTALL_CONF_ROOT" ]; then + if [ -f "$KERNEL_INSTALL_CONF_ROOT/cmdline" ]; then + BOOT_OPTIONS="$(tr -s "$IFS" ' ' <"$KERNEL_INSTALL_CONF_ROOT/cmdline")" + fi +elif [ -f /etc/kernel/cmdline ]; then + BOOT_OPTIONS="$(tr -s "$IFS" ' ' </etc/kernel/cmdline)" +elif [ -f /usr/lib/kernel/cmdline ]; then + BOOT_OPTIONS="$(tr -s "$IFS" ' ' </usr/lib/kernel/cmdline)" +else + BOOT_OPTIONS="$(tr -s "$IFS" '\n' </proc/cmdline | grep -ve '^BOOT_IMAGE=' -e '^initrd=' | tr '\n' ' ')" +fi + +BOOT_OPTIONS="${BOOT_OPTIONS% }" + +# If the boot entries are named after the machine ID, then suffix the kernel +# command line with the machine ID we use, so that the machine ID remains +# stable, even during factory reset, in the initrd (where the system's machine +# ID is not directly accessible yet), and if the root file system is volatile. +if [ "$ENTRY_TOKEN" = "$MACHINE_ID" ] && ! echo "$BOOT_OPTIONS" | grep -q "systemd.machine_id="; then + BOOT_OPTIONS="$BOOT_OPTIONS systemd.machine_id=$MACHINE_ID" +fi + +TRIES_FILE="${KERNEL_INSTALL_CONF_ROOT:-/etc/kernel}/tries" + +if [ -f "$TRIES_FILE" ]; then + read -r TRIES <"$TRIES_FILE" + if ! echo "$TRIES" | grep -q '^[0-9][0-9]*$'; then + echo "$TRIES_FILE does not contain an integer." >&2 + exit 1 + fi + LOADER_ENTRY="$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION+$TRIES.conf" +else + LOADER_ENTRY="$BOOT_ROOT/loader/entries/$ENTRY_TOKEN-$KERNEL_VERSION.conf" +fi + +if ! [ -d "$ENTRY_DIR_ABS" ]; then + echo "Error: entry directory '$ENTRY_DIR_ABS' does not exist" >&2 + exit 1 +fi + +install -m 0644 "$KERNEL_IMAGE" "$ENTRY_DIR_ABS/linux" || { + echo "Error: could not copy '$KERNEL_IMAGE' to '$ENTRY_DIR_ABS/linux'." >&2 + exit 1 +} +chown root:root "$ENTRY_DIR_ABS/linux" || : + +shift "$INITRD_OPTIONS_SHIFT" +# All files listed as arguments, and staged files starting with "initrd" are installed as initrds. +for initrd in "$@" "${KERNEL_INSTALL_STAGING_AREA}"/initrd*; do + [ -f "$initrd" ] || { + [ "$initrd" = "${KERNEL_INSTALL_STAGING_AREA}/initrd*" ] && continue + echo "Error: initrd '$initrd' not a file." >&2 + exit 1 + } + + initrd_basename="${initrd##*/}" + [ "$KERNEL_INSTALL_VERBOSE" -gt 0 ] && echo "Installing $ENTRY_DIR_ABS/$initrd_basename" + install -m 0644 "$initrd" "$ENTRY_DIR_ABS/$initrd_basename" || { + echo "Error: could not copy '$initrd' to '$ENTRY_DIR_ABS/$initrd_basename'." >&2 + exit 1 + } + chown root:root "$ENTRY_DIR_ABS/$initrd_basename" || : +done + +mkdir -p "${LOADER_ENTRY%/*}" || { + echo "Error: could not create loader entry directory '${LOADER_ENTRY%/*}'." >&2 + exit 1 +} + +[ "$KERNEL_INSTALL_VERBOSE" -gt 0 ] && echo "Creating $LOADER_ENTRY" +{ + echo "title $PRETTY_NAME" + echo "version $KERNEL_VERSION" + if [ "$ENTRY_TOKEN" = "$MACHINE_ID" ]; then + # See similar logic above for the systemd.machine_id= kernel command line option + echo "machine-id $MACHINE_ID" + fi + [ -n "$SORT_KEY" ] && echo "sort-key $SORT_KEY" + echo "options $BOOT_OPTIONS" + echo "linux $ENTRY_DIR/linux" + + have_initrd= + for initrd in "${@}" "${KERNEL_INSTALL_STAGING_AREA}"/initrd*; do + [ -f "$initrd" ] || continue + echo "initrd $ENTRY_DIR/${initrd##*/}" + have_initrd=yes + done + + # Try "initrd", generated by dracut in its kernel-install hook, if no initrds were supplied + [ -z "$have_initrd" ] && [ -f "$ENTRY_DIR_ABS/initrd" ] && echo "initrd $ENTRY_DIR/initrd" + : +} >"$LOADER_ENTRY" || { + echo "Error: could not create loader entry '$LOADER_ENTRY'." >&2 + exit 1 +} +exit 0 |