Accessing the command-level parameter structure from exits XFCAREQ and XFCAREQC

The command-level parameter structure consists of a series of addresses. The first address points to the EXEC interface descriptor (EID), which consists of a bit string that describes the type of request and identifies each keyword specified with the request. The remaining addresses point to pieces of data associated with the request.

You can examine the EID to determine the type of request and the keywords specified. You can examine the other parameters in the list to determine the values of the keywords. You can also modify values of keywords specified on the request.

Note: The relationship between arguments, keywords, data types, and input/output types on the file control SPI commands is summarized in the following tables:

For INQUIRE FILE, see Table 1.
For SET FILE, see Table 2.