z/OS MVS Using the Subsystem Interface
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Input Parameters

z/OS MVS Using the Subsystem Interface
SA38-0679-00

Input parameters for the function routine are:
  • SSOB
  • SSIB
  • IAZSSJI
  • IAZCVDEV (Convert Device ID service)
SSOB Contents: The caller sets the following fields in the SSOB control block on input:
Field Name
Description
SSOBID
Identifier 'SSOB'
SSOBLEN
Length of the SSOB (SSOBHSIZ) control block
SSOBFUNC
SSI function code 71(SSOBSSJI)
SSOBSSIB
Address of the SSIB control block or zero (if this field is zero, the life-of-job SSIB is used). See Subsystem Identification Block (SSIB) for more information on the life-of-job SSIB
SSOBINDV
Address of the function-dependent area (IAZSSJI control block)

Set all other fields in the SSOB control block to binary zeros before issuing the IEFSSREQ macro.

SSIB Contents: If you don't use the life-of-job SSIB, the caller must provide an SSIB and set the following fields in the SSIB control block on input:
Field Name
Description
SSIBID
Identifier 'SSIB'
SSIBLEN
Length of the SSIB (SSIBSIZE) control block
SSIBSSNM
Subsystem name — name of the subsystem to which this Job Information Services request is directed

Set all other fields in the SSIB control block to binary zeros before issuing the IEFSSREQ macro.

IAZSSJI Contents: The caller must set the following fields in the IAZSSJI control block on input:
Field Name
Description
SSJIID
Eyecatcher for the control block (set to 'SSJI')
SSJILEN
Length of the IAZSSJI (SSJISIZE) control block
SSJISVRN
Input version of the IAZSSJI control block. Set to SSJISVR# for version 1 of the control block
SSJIFREQ
Function to be performed on this request. Valid functions and their related SSJIUSER area are:
Field Value
Description
SSJICVDV
IAZCVDEV, Convert device ID service
SSJIUSER
Pointer to service specific data area (IAZCVDEV)

Set all other fields in the IAZSSJI control block to binary zeros before issuing the IEFSSREQ macro.

Convert Device ID service, IAZCVDEV contents: For the Convert device ID service (function code SSJICVDV) the caller must set the following fields in the IAZCVDEV control block on input:

Field Name
Description
CVDVSSID
Eyecatcher of the control block (set to 'CVDV')
CVDVLEN
Length of the IAZCVDEV (CVDSZE) control block
CVDEVVRN
Input version of the IAZCVDEV control block. Set to CVDVVER1 for version 1 of the cotnrol block. Set to CVDVVER# for the current (latest) version
CVDVID
Device ID in binary

Set all other fields in the IAZCVDEV control block to binary zeros before issuing the IEFSSREQ macro.

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