gtpi1m5i | System Installation Support Reference |
The user data recovery restore support user exit (UDRR) allows you to use
user-defined data recovery restore support. This user exit is activated
when you enter the ZRDRS command.
Input
- D0
- A pointer to the input command in output message (OMSG) format. The
input command that is stored in this area was converted to uppercase
characters; the command ends with the end-of-message character
(X'4E').
- CE2CRSMSG
- A pointer to a copy of the input command that was not converted to
uppercase characters. The input command that is stored in this area can
contain uppercase, lowercase, or other special characters; the command
ends with a null character (X'00').
Programming Considerations
- The released version of UDRR contains sample code that will return an
error message to indicate that the requested function is not
implemented. You must replace the UDRR user exit with code that
supports a data recovery restore function.
- CE2CRSMSG is a 4-byte field that is located in page 2 of the entry control
block (ECB) and is defined in data area IEQCE2. (Page 2 of the ECB is
the 4 KB of protected storage that is located 4 KB beyond the start of the
ECB.) Use base registers 9 and 11 (R9 and R11) to address this
field.
Return Values
None.
References
TPF Operations.