Application developers might want a server to check the authority of a user to access RACF-protected resources. In this way, the server can control access to those resources. The resources include printers and tapes, but not UNIX files and directories and MVS™ data sets. Use the z/OS UNIX auth_check_resource_np (BPX1ACK) callable service or the C/C++ runtime library check_resource_auth_np() function call to invoke the RACF® v_dceauth callable services to do the necessary checking. The resources must be defined to RACF general resource classes. The server must have read access to the BPX.SERVER FACILITY class profile or have UID(0); in addition, all server modules must be defined to RACF.