void viewer_session_destroy(struct relay_viewer_session *vsession);
void viewer_session_close(struct relay_viewer_session *vsession);
-int viewer_session_attach(struct relay_viewer_session *vsession,
+enum lttng_viewer_attach_return_code viewer_session_attach(
+ struct relay_viewer_session *vsession,
struct relay_session *session);
int viewer_session_is_attached(struct relay_viewer_session *vsession,
struct relay_session *session);