The Exit Parameter Block

Table 1 describes the contents of the exit parameter block.

Table 1. EXPB Control Block format for Mainline Exits
Offset (Dec) Number of Bytes Description
0 4 Name.

The name of the control block. This field contains the character string EXPB.

4 2 Version.

The version of the control block. This field contains the character string 01.

6 2 Length.

The length of the control block. The value of this field is 40 in decimal.

8 4 Dynamic area address.

The address of a 400-byte area that the exit can use as a dynamic area.

12 4 Exit area address.

The address of an 8-byte area the exits can use to communicate with each other. ICSF does not check or change this field.

16 4 Exit communication area.

A character string that can be used for communication between the exits. The field is initialized to zero before CSFEXIT1 is called, and ICSF does not modify this field.

20 4 Flags.

Reserved. The flag field is used only by the exits for the services. The field contains binary zeros for the mainline exits.

24 4 Secondary parameter block (SPB) address.

Reserved. The SPB is used only by the exits for the services. The field contains binary zeros for the mainline exits.

28 4 CCVT address.

Address of the Cryptographic Communication Vector Table (CCVT). The Cryptographic Communication Vector Table (CCVT) describes the CCVT in greater detail.

32 8 Module name.

The installation exit's load module name. The field contains the value of the load module name you specified on the EXIT keyword in the installation options data set. The field is 8 bytes of characters, and the value is left-justified and padded with blanks.