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#!/bin/bash
# This file is part of dracut.
# SPDX-License-Identifier: GPL-2.0-or-later
# Prerequisite check(s) for module.
check() {
# If the binary(s) requirements are not fulfilled the module can't be installed
require_binaries busctl || return 1
require_binaries dbus-daemon || return 1
require_binaries dbus-send || return 1
# Return 255 to only include the module, if another module requires it.
return 255
}
# Module dependency requirements.
depends() {
# This module has external dependency on the systemd module.
echo systemd
# Return 0 to include the dependent systemd module in the initramfs.
return 0
}
# Install the required file(s) and directories for the module in the initramfs.
install() {
# dbus conflicts with dbus-broker.
if dracut_module_included "dbus-broker"; then
derror "dbus conflicts with dbus-broker in the initramfs."
return 1
fi
# Create dbus related directories.
inst_dir "$dbus"
inst_dir "$dbusinterfaces"
inst_dir "$dbusservices"
inst_dir "$dbussession"
inst_dir "$dbussystem"
inst_dir "$dbussystemservices"
inst_dir "$dbusconfdir"
inst_dir "$dbusinterfacesconfdir"
inst_dir "$dbusservicesconfdir"
inst_dir "$dbussessionconfdir"
inst_dir "$dbussystemconfdir"
inst_dir "$dbussystemservicesconfdir"
inst_multiple -o \
"$dbus"/system.conf \
"$dbussystem"/org.freedesktop.systemd1.conf \
"$dbusservicesconfdir"/org.freedesktop.systemd1.service \
"$dbussystemservices"/org.freedesktop.systemd1.service \
"$systemdsystemunitdir"/dbus.service \
"$systemdsystemunitdir"/dbus.socket \
"$systemdsystemunitdir"/dbus.target.wants \
"$systemdsystemunitdir"/multi-user.target.wants/dbus.service \
"$systemdsystemunitdir"/sockets.target.wants/dbus.socket \
busctl dbus-send dbus-daemon
# Adjusting dependencies for initramfs in the dbus service unit.
# shellcheck disable=SC1004
sed -i -e \
'/^\[Unit\]/aDefaultDependencies=no\
Conflicts=shutdown.target\
Before=shutdown.target' \
"$initdir$systemdsystemunitdir/dbus.service"
# Adjusting dependencies for initramfs in the dbus socket unit.
# shellcheck disable=SC1004
sed -i -e \
'/^\[Unit\]/aDefaultDependencies=no\
Conflicts=shutdown.target\
Before=shutdown.target
/^\[Socket\]/aRemoveOnStop=yes' \
"$initdir$systemdsystemunitdir/dbus.socket"
# Adding the user and group for dbus
grep '^\(d\|message\)bus:' "$dracutsysrootdir"/etc/passwd >> "$initdir/etc/passwd"
grep '^\(d\|message\)bus:' "$dracutsysrootdir"/etc/group >> "$initdir/etc/group"
# Install the hosts local user configurations if enabled.
if [[ $hostonly ]]; then
inst_multiple -H -o \
"$dbusconfdir"/system.conf \
"$systemdsystemconfdir"/dbus.socket \
"$systemdsystemconfdir"/dbus.socket.d/*.conf \
"$systemdsystemconfdir"/dbus.service \
"$systemdsystemconfdir"/dbus.service.d/*.conf
fi
# We need to make sure that systemd-tmpfiles-setup.service->dbus.socket
# will not wait for local-fs.target to start if swap is encrypted,
# this would make dbus wait the timeout for the swap before loading.
# This could delay sysinit services that are dependent on dbus.service.
sed -i -Ee \
'/^After/s/(After[[:space:]]*=.*)(local-fs.target[[:space:]]*)(.*)/\1-\.mount \3/' \
"$initdir$systemdsystemunitdir/systemd-tmpfiles-setup.service"
}
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