HDSNENT Back to Index page
 
Prolog 
Control Block Contents 
   HDSNENT DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

 
  HDSNENT Control Block Content Top of page
  




 HDSNENT DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      HDSNENT
0000    0 Character   44 HDSNPDSN       DSNTPDSN value
002C   44 Bitstring   40 HDSNPUID       and associated UUID
0054   84 Bitstring    1 HDSNPF         and flags:
          1... ....      HPFFBA         X'80' HPFFBA on FBA device
          .1.. ....      HPFNFP         X'40' HPFNFP not full-pack or
                                        dedicated device
          ..1. ....      HPFNORSV       X'20' HPFNORSV RESERVE/RELEASE
                                        not supported
          ...1 ....      HPFNOVRR       X'10' HPFNOVRR No virtual
                                        RESERVE/RELEASE
          .... 1...      HPFASTA        X'08' HPFASTA DSN specified as *
          .... .1..      HPFNODEV       X'04' HPFNODEV Error accessing
                                        device
0055   85 Character   44 HDSNBDSN       DSNTBDSN value
0081  129 Bitstring   40 HDSNBUID       and associated UUID
00A9  169 Bitstring    1 HDSNBF         and flags:
          1... ....      HBFFBA         X'80' HBFFBA on FBA device
          .1.. ....      HBFNFP         X'40' HBFNFP not full-pack or
                                        dedicated device
          ..1. ....      HBFNORSV       X'20' HBFNORSV RESERVE/RELEASE
                                        not supported
          ...1 ....      HBFNOVRR       X'10' HBFNOVRR No virtual
                                        RESERVE/RELEASE
          .... 1...      HBFASTA        X'08' HBFASTA DSN specified as *
          .... .1..      HBFNODEV       X'04' HBFNODEV Error accessing
                                        device
00AA  170 Bitstring    1 HDSNN2         Relevant flags from DSNT entry:
          1... ....      HDSNUPDB       X'80' HDSNUPDB "UPDATES ARE TO BE
                                        DUPLICATED"
          000000AB       HDSNELEN       *-HDSNENT
 
 
  HDSNENT Storage Layout Top of page
  
          
*** HDSNENT - Control Block in HDSNENT
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       HDSNPDSN                        =
*     |                           +---------------------------+
*     |                           |                           |
*     +---------------------------+                           |
*  30 |                                                       |
*     =                       HDSNPUID                        =
*     |                           +------+--------------------+
*  50 |                           |HDSNPF|                    |
*     +---------------------------+------+                    |
*  58 |                                                       |
*     =                       HDSNBDSN                        =
*     |      +------------------------------------------------+
*     |      |                                                |
*     +------+                                                |
*  88 |                                                       |
*     =                       HDSNBUID                        =
*     |      +------+------+----------------------------------+
*  A8 |      |HDSNBF|HDSNN2| AB
*     +------+------+------+
*
*** HDSNENT - Control Block in HDSNENT
 
 
  HDSNENT Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
HBFASTA        00A9 08
HBFFBA         00A9 80
HBFNFP         00A9 40
HBFNODEV       00A9 04
HBFNORSV       00A9 20
HBFNOVRR       00A9 10
HDSNBDSN       0055
HDSNBF         00A9
HDSNBUID       0081
HDSNELEN       00AA 000000AB
HDSNN2         00AA
HDSNPDSN       0000
HDSNPF         0054
HDSNPUID       002C
HDSNUPDB       00AA 80
HPFASTA        0054 08
HPFFBA         0054 80
HPFNFP         0054 40
HPFNODEV       0054 04
HPFNORSV       0054 20
HPFNOVRR       0054 10
 
This information is based on z/VM 7.5.0 Last updated on 22 Jun 2026 at 11:17:21 EDT.
Copyright IBM Corporation, 1990, 2026