void *sysview_session_get_userdata(sysview_session *session);
const char *sysview_session_get_name(sysview_session *session);
+sysview_seat *sysview_session_get_seat(sysview_session *session);
int sysview_session_take_control(sysview_session *session);
void sysview_session_release_control(sysview_session *session);