- if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
- return bus_send_error_reply(m, connection, message, NULL, r);
+ if ((r = manager_load_unit(m, name, NULL, &error, &u)) < 0)
+ return bus_send_error_reply(m, connection, message, &error, r);
+
+ if (job_type == JOB_START && u->meta.only_by_dependency) {
+ dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Unit may be activated by dependency only.");
+ return bus_send_error_reply(m, connection, message, &error, -EPERM);
+ }