Installing the exits

TSO/E supplies default exit routines as described in TSO/E-supplied exits. The names of these default exit routines are fixed and cannot be changed:

Pre-environment initialization exit: IRXINITX
Post-environment initialization exits: IRXITTS (for TSO/E), IRXITMV (for non-TSO/E)
Environment termination exit: IRXTERMX

For the following exits, specify the name you have chosen for them in the module name table:

IRXEXECX field for the exec processing exit for the IRXEXEC routine
ATTNROUT field for the attention handling exit
EXECINIT field for the exec initialization exit
EXECTERM field for the exec termination exit

The IRXINITX, IRXITTS, IRXITMV, and IRXTERMX exits must be link-edited with the IRXINIT initialization routine.

Link-edit the exit for IRXEXEC, the attention handling exit, and the exec initialization and exec termination exits as separate load modules or as aliases of other load modules. You can link-edit the exits in a separate load library that is exclusively for TSO/E exits or in an existing library containing other routines. All the exits can reside in:

The link pack area (LPA)
LNKLST
A private STEPLIB

If you define any of the TSO/E-supplied REXX exits or the installation-defined exits, and if these exits are intended for use with the TSO REXX environment created by the TSO TMP (that is, they are defined in the REXX default parameters module IRXTSPRM), then these exits must be placed in an APF-authorized library. However, note that they should not be link-edited APF-authorized, and they do not receive control APF-authorized.

For more information about using the LPA, LNKLST, or STEPLIB, see Installing the standard-format exits.