return n;
}
+
+int bus_unit_check_load_state(Unit *u, sd_bus_error *error) {
+
+ if (u->load_state == UNIT_LOADED)
+ return 0;
+
+ /* Give a better description of the unit error when
+ * possible. Note that in the case of UNIT_MASKED, load_error
+ * is not set. */
+ if (u->load_state == UNIT_MASKED)
+ return sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED, "Unit is masked.");
+
+ if (u->load_state == UNIT_NOT_FOUND)
+ return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit not found.");
+
+ return sd_bus_error_set_errnof(error, u->load_error, "Unit is not loaded properly: %m.");
+}