Parameter list contents

Register 1 points to a parameter list, which contains the following fields:

1. Pointer to an 8-character security-class string that has one of the following values:

   DASDVOL

   Checks a user's authority to access a DASD volume with disk fullpack processing.

   FACILITY

   Checks a user's authority to use a Z Data Tools function, or a FULLPACK or BLP operation.

   TERMINAT

   Requests cleanup processing by the exit.

2. Pointer to a 44-character entity string:

   If parameter 1 is DASDVOL, parameter 2 is the volser.

   If parameter 1 is FACILITY, parameter 2 is the profile name shown in Z Data Tools function to profile name cross-reference.

3. Reserved.
4. Pointer to an 8-character access string. The string has the value READ, UPDATE, CONTROL, or ALTER, as described in z/OS Security Server RACF Command Language Reference.
5. Pointer to an 8-character function code (the name of a Z Data Tools function).
6. Pointer to a 2-byte flags field, consisting of the following 16 bits:

   0

   Batch mode

   1

   Full-screen mode

   2

   Line mode

   3

   Command mode

   4

   (reserved)

   5

   XA environment

   6

   ESA environment

   7–15

   (reserved)

7. Pointer to an 8-character user ID.
8. Pointer to an 8-character job name.
9. Reserved.
10. Pointer to a 1-fullword user field.

    This fullword is not used by Z Data Tools. The exit can use this fullword to remember information (such as an address) from one call to another.

    Z Data Tools initializes this fullword to binary zero at first invocation of the exit.