[libgpiod][RFC/RFT 12/18] dbus: add data files

[Bartosz Golaszewski <brgl@xxxxxxxx>]

From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

Add the default service configuration file for the DBus GPIO API and
a systemd unit file that allows to start up the gpio-manager.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
---
 dbus/data/gpio-manager.service | 14 ++++++++++++++
 dbus/data/io.gpiod1.conf       | 29 +++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 dbus/data/gpio-manager.service
 create mode 100644 dbus/data/io.gpiod1.conf

diff --git a/dbus/data/gpio-manager.service b/dbus/data/gpio-manager.service
new file mode 100644
index 0000000..f84f8cc
--- /dev/null
+++ b/dbus/data/gpio-manager.service
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: CC0-1.0
+# SPDX-FileCopyrightText: 2023 Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
+
+[Unit]
+Description=Centralized GPIO manager daemon
+
+[Service]
+Type=dbus
+BusName=io.gpiod1
+ExecStart=/usr/bin/gpio-manager
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
diff --git a/dbus/data/io.gpiod1.conf b/dbus/data/io.gpiod1.conf
new file mode 100644
index 0000000..339a382
--- /dev/null
+++ b/dbus/data/io.gpiod1.conf
@@ -0,0 +1,29 @@
+<!-- SPDX-License-Identifier: CC-BY-SA-4.0.txt -->
+<!-- SPDX-FileCopyrightText: 2022-2024 Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx> -->
+
+<!-- This configuration file specifies the required security policies
+     for the gpio-dbus daemon to work. -->
+
+<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+ "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd";>
+
+<busconfig>
+
+  <policy context="default">
+    <allow send_destination="io.gpiod1"
+           send_interface="org.freedesktop.DBus.Peer"
+           send_member="Ping"/>
+    <allow send_destination="io.gpiod1"
+           send_interface="org.freedesktop.DBus.Introspectable"/>
+    <allow send_destination="io.gpiod1"
+           send_interface="org.freedesktop.DBus.Properties"/>
+    <allow send_destination="io.gpiod1"
+           send_interface="org.freedesktop.DBus.ObjectManager"/>
+  </policy>
+
+  <policy user="root">
+    <allow own="io.gpiod1"/>
+    <allow send_destination="io.gpiod1"/>
+  </policy>
+
+</busconfig>
-- 
2.40.1