int bus_connect(DBusBusType t, DBusConnection **_bus, bool *private_bus, DBusError *error);
+int bus_connect_system_ssh(const char *user, const char *host, DBusConnection **_bus, DBusError *error);
+int bus_connect_system_polkit(DBusConnection **_bus, DBusError *error);
+
+const char *bus_error_message(const DBusError *error);
+
#endif