ARUBK Back to Index page
 
Prolog 
Control Block Contents 
   ARUBK 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.


  ARUBK Prolog Top of page
  
 NAME       : HCPARUBK
 DESCRIPTION: Access Real Subsystem Unsolicited
              Status Header Block
 DSECT      : ARUBK
 FUNCTION   : Header block pointing to all unsolicited
              status entries (i.e., ARUSE entries) for
              a Diagnose X'254' user.
 LOCATED BY : ARSUSQUE.ARSDT for linked list of all ARUBKs
              for all Diagnose X'254' users on the system.
              ARIUNSQ.ARIBK for ARUBK owned by a diagnose
              user.  All ARIBKs for a user will point to
              the same ARUBK.
 CREATED BY : HCPARS on open of first connection for guest.
 DELETED BY : HCPARS on close of last connection for guest.
 
 
  ARUBK Control Block Content Top of page
  




 ARUBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      ARUBK          Access Real Subsystem Unsolicited
0000    0 Address      4 ARUNEXT        Pointer to next ARUBK
0004    4 Address      4 ARUELST        Pointer to ARUSE linked list
0008    8 Dbl-Word     8 ARULOCK (3)    Unsolicited status block lock
0020   32 Address      4 ARUBVMD        Pointer to base VMDBK for guest
0024   36 Bitstring   12 *              Reserved
          00000030       ARUBYLEN       *-ARUBK Byte length of ARUBK
          00000006       ARUDWSIZ       ((ARUBYLEN+7)/8) Doubleword
                                        length of ARUBK
 
 
  ARUBK Storage Layout Top of page
  
          
*** ARUBK - Access Real Subsystem Unsolicited
*
*     +---------------------------+---------------------------+
*   0 |         ARUNEXT           |         ARUELST           |
*     +---------------------------+---------------------------+
*   8 |                                                       |
*     =                       ARULOCK                         =
*     |                                                       |
*     +---------------------------+---------------------------+
*  20 |         ARUBVMD           |///////////////////////////|
*     +---------------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  30
*
*** ARUBK - Access Real Subsystem Unsolicited
 
 
  ARUBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
ARUBVMD        0020
ARUBYLEN       0024 00000030
ARUDWSIZ       0024 00000006
ARUELST        0004
ARULOCK        0008
ARUNEXT        0000
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:47:23 EDT.
Copyright IBM Corporation, 1990, 2022