#include int sd_session_get_class(const char *session, char **class); int sd_session_get_seat(const char *session, char **seat); int sd_session_get_type(const char *session, char **type); int sd_session_get_state(const char *session, char **state); int sd_session_get_uid(const char *session, uid_t *uid); int sd_session_get_service(const char *session, char **service); int sd_pid_get_session(pid_t pid, char **session); int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions); int sd_seat_can_graphical(const char *seat); int sd_seat_can_multi_session(const char *seat); int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, unsigned int *n_uids); int sd_get_sessions(char ***sessions);