-#ifdef USE_DBUS
-
-/** Global variable for the connection the to system message bus or #NULL
- * if we cannot connect or acquire the org.kernel.udev service
- */
-DBusConnection* sysbus_connection;
-
-/** Disconnect from the system message bus */
-static void sysbus_disconnect()
-{
- if (sysbus_connection == NULL)
- return;
-
- dbus_connection_disconnect(sysbus_connection);
- sysbus_connection = NULL;
-}
-
-/** Connect to the system message bus */
-static void sysbus_connect()
-{
- DBusError error;
-
- /* Connect to a well-known bus instance, the system bus */
- dbus_error_init(&error);
- sysbus_connection = dbus_bus_get(DBUS_BUS_SYSTEM, &error);
- if (sysbus_connection == NULL) {
- dbg("cannot connect to system message bus, error %s: %s",
- error.name, error.message);
- dbus_error_free(&error);
- return;
- }
-
- /* Acquire the org.kernel.udev service such that listeners
- * know that the message is really from us and not from a
- * random attacker. See the file udev_sysbus_policy.conf for
- * details.
- *
- * Note that a service can have multiple owners (though there
- * is a concept of a primary owner for reception of messages)
- * so no race is introduced if two copies of udev is running
- * at the same time.
- */
- dbus_bus_acquire_service(sysbus_connection, "org.kernel.udev", 0,
- &error);
- if (dbus_error_is_set(&error)) {
- printf("cannot acquire org.kernel.udev service, error %s: %s'",
- error.name, error.message);
- sysbus_disconnect();
- return;
- }
-}
-
-#endif /* USE_DBUS */