int mbr_user_name_to_uuid(const char *name, uuid_t uu);
int mbr_group_name_to_uuid(const char *name, uuid_t uu);
int mbr_check_membership_by_id(uuid_t user, gid_t group, int *ismember);
-int mbr_check_service_membership(const uuid_t user, const char *servicename, int *ismember);
int mbr_check_membership_refresh(const uuid_t user, uuid_t group, int *ismember);
int mbr_uuid_to_string(const uuid_t uu, char *string);
int mbr_string_to_uuid(const char *string, uuid_t uu);