+
+int bus_connect_system_polkit(DBusConnection **_bus, DBusError *error) {
+ DBusConnection *bus;
+ int r;
+
+ assert(_bus);
+
+ /* Don't bother with PolicyKit if we are root */
+ if (geteuid() == 0)
+ return bus_connect(DBUS_BUS_SYSTEM, _bus, NULL, error);
+
+ if (!(bus = dbus_connection_open_private("exec:path=pkexec,argv1=" SYSTEMD_STDIO_BRIDGE_BINARY_PATH, error)))
+ return -EIO;
+
+ dbus_connection_set_exit_on_disconnect(bus, FALSE);
+
+ if ((r = sync_auth(bus, error)) < 0) {
+ dbus_connection_close(bus);
+ dbus_connection_unref(bus);
+ return r;
+ }
+
+ if (!dbus_bus_register(bus, error)) {
+ dbus_connection_close(bus);
+ dbus_connection_unref(bus);
+ return r;
+ }
+
+ *_bus = bus;
+ return 0;
+}
+
+const char *bus_error_message(const DBusError *error) {
+ assert(error);
+
+ /* Sometimes the D-Bus server is a little bit too verbose with
+ * its error messages, so let's override them here */
+ if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED))
+ return "Access denied";
+
+ return error->message;
+}