The RACEXITS member in SYS1.SAMPLIB includes two sample IRREVX01 exit routines, IRREVX1A and IRREVX1B.

IRREVX1A illustrates how to use the IRREVX01 exit point to fail certain commands.

IRREVX1B illustrates how to use the IRREVX01 exit point to limit SPECIAL authority for certain user IDs to updating password information. The exit checks whether a FACILITY class profile of the form HELPDESK.userid exists, and if so, limits the SPECIAL authority to password updates. Note however, that generic profile checking applies to this profile lookup. If your installation already uses the FACILITY class, before you activate the IRREVX1B routine to the IRREVX01 exit point make sure that no profile such as ** exists. Otherwise, no user IDs have SPECIAL authority until you deactivate the exit routine.