sdbus-cpp/docs/systemd-dbus-config.md

Systemd and dbus configuration

Table of contents

1. Introduction
2. Systemd configuration
3. Dbus configuration

Introduction

To run executable as a systemd service you may need some additional setup. For example, you may need explicitly allow the usage of your service. Following chapters contain template configurations.

Systemd configuration

Filename should use .service extension. It also must be placed in configuration directory (/etc/systemd/system in Ubuntu 18.04.1 LTS)

[Unit]
Description=nameOfService

[Service]
ExecStart=/path/to/executable

[Install]
WantedBy=multi-user.target

Dbus configuration

Typical default D-Bus configuration does not allow to register services except explicitly allowed. Filename should contain name of your service, e.g /etc/dbus-1/system.d/org.sdbuscpp.concatenator.conf. So, here is template configuration to use dbus interface under root:

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
  <policy user="root">
    <allow own="org.sdbuscpp.concatenator"/>
    <allow send_destination="org.sdbuscpp"/>
    <allow send_interface="org.sdbuscpp.concatenator"/>
  </policy>
</busconfig>

If you need access from other user root should be substituted by desired username. For more refer to man dbus-daemon.