z/OS DFSMS Installation Exits
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ADRUENQ Parameter List

z/OS DFSMS Installation Exits
SC23-6850-01

Register 1 contains the address of the ADRUENQ parameter list. You can use the ADRUNQB mapping macro to map this parameter list (see Table 1).

The first word of the parameter list is a pointer to the volume serial field for the volume being dumped. The second word of the parameter list contains flags that are set as follows:
Byte 0 Bit
  Meaning
0
End of the parameter list. This is always set to 1.
1
Reserved.
2
Set to 1 for a DUMP operation
3
Reserved.
4
Set to 1 for a COPY operation.
5
Set to 1 for a PRINT operation.
6
Reserved.
7
Reserved.
Byte 1 Bit
  Meaning
0
Set to 1 for a data set operation.
1
Set to 1 for a full volume DUMP or COPY operation.
2
Set to 1 for a tracks DUMP, COPY, or PRINT operation.
3 to 7
Reserved.
Byte 2 Bit
  Meaning
0
Set to 1 if TOLERATE(ENQFAILURE) is used.
1-7
Reserved.
Byte 3
Reserved.
Table 1. ADRUNQB Parameter List
Offset Length or Bit Pattern Name Description
0 (X'0') 8 ADRUNQB  
0 (X'0') 4 UNUCBVSA UCB volume serial number address
4 (X'4') 1 UNFLG1 Flag byte 0
1... .... UNEOL End of list indicator, always 1
.x.. ....   Reserved
..1. .... UNDUMP 1 = DUMP operation
...x ....   Reserved
.... 1... UNCOPY 1 = COPY operation
.... .1.. UNPRINT 1 = PRINT operation
.... ..xx   Reserved
5 (X'5') 1 UNFLG2 Flag byte 1
1... .... UNDSN 1 = data set operation
.1.. .... UNFULL 1 = full volume operation
..1. .... UNPART 1 = partial volume operation
...x xxxx   Reserved
6 (X'6') 1 UNFLG3 Flag byte 2
1... .... UNTOLNQF 1 = TOLERATE(ENQFAILURE) specified
7 (X'7') 1   Reserved

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