Writing a logon post-display exit (IKJEFLN2)
You can use the post-display exit, IKJEFLN2, to further customize the logon process. This exit can receive control after the TSO/E user presses the Enter key on the logon panel display.
The logon processor invokes this exit if:
- The logon panel load modules are present in the LPA
- Exit IKJEFLD/IKJEFLD1 does not set the
Don't Prompt
control bit.
Note: If IKJEFLN1 sets the
Don't Promptbit, IKJEFLN2 will not be invoked unless IKJEFLN1 also sets the
Invoke IKJEFLN2bit.
The logon processor can invoke this exit several times during logon processing. If a re-prompt occurs for any data that is entered by the user, the logon processor invokes this exit.
You can write a post-display exit to perform the following tasks:
- Update information contained on the logon panel
- Process any installation-defined fields
- Validate user-entered data
- Indicate that the LOGON command display a particular help panel
- Re-prompt for data