Invoking the DFHCSDUP program from a user program enables you to create a flexible interface to the utility. By specifying the appropriate entry parameters, your program can cause the DFHCSDUP program to pass control to an exit routine at any of five exit points. The exits can be used, for example, to pass commands to the DFHCSDUP program, or to respond to messages produced by its processing.
AN ATTENTION INTERRUPT HAS BEEN REQUESTED DURING DFHCSDUP PROCESSING
Your put-message exit routine can terminate the DFHCSDUP program, if desired. (You must supply a put-message routine if you want your operators to regain control after an ATTENTION interrupt.)The CICS®-supplied sample program, DFH$CUS1, illustrates how the DFHCSDUP program can be invoked from a user program. It is written as a command processor (CP) for execution under the TSO/E operating system.
The following sections outline the entry parameters of the DFHCSDUP program and the responsibilities of the user program. For programming information about invoking the DFHCSDUP program from a user program, see the CICS Customization Guide.