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-rwxr-xr-xsrc/kernel-install/90-loaderentry.install165
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