+void relay_index_close_partial_fd(struct relay_stream *stream);
+uint64_t relay_index_find_last(struct relay_stream *stream);
+int relay_index_switch_all_files(struct relay_stream *stream);
+int relay_index_set_control_data(struct relay_index *index,
+ const struct lttcomm_relayd_index *data,
+ unsigned int minor_version);