int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, unsigned *n_uids);
/* Return whether the seat is multi-session capable */
int sd_seat_can_multi_session(const char *seat);
int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, unsigned *n_uids);
/* Return whether the seat is multi-session capable */
int sd_seat_can_multi_session(const char *seat);