OPNBK Back to Index page
 
Prolog 
Control Block Contents 
   OPNBK 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.


  OPNBK Prolog Top of page
  
 NAME       : HCPOPNBK
 DESCRIPTION: ISFC CP Application open control block
 DSECT      : OPNBK
 FUNCTION   : Each OPNBK holds information exchanged between CP application
              mailboxes when establishing a conversation.
 LOCATED BY :
 CREATED BY : CP application mailbox on an OPEN function.
 DELETED BY : CP application mailbox when releasing an OPEN_C message.
 SERIALIZED : The ACTBK lock.
 RELOCATION CONSIDERATIONS : None
 NOTES      :
              An OPNBK contains information from one CP Application
              mailbox to a partner mailbox when a conversation is
              being established.
              It is used by the CP Application mailbox on OPEN and
              OPEN_C messages.
 
 
  OPNBK Control Block Content Top of page
  




 OPNBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      OPNBK          ISFC CP Application open control block
0000    0 Character    8 OPNAPPLT       Target CP application name
0008    8 Character    8 OPNNODET       Target node name
0010   16 Character    8 OPNAPPLS       Source CP application name
0018   24 Character    8 OPNNODES       Source node name
          00000004       OPNSIZE        (*-OPNBK+7)/8 Size, in
                                        doublewords, of OPNBK
 
 
  OPNBK Storage Layout Top of page
  
          
*** OPNBK - ISFC CP Application open control block
*
*     +-------------------------------------------------------+
*   0 |                       OPNAPPLT                        |
*     +-------------------------------------------------------+
*   8 |                       OPNNODET                        |
*     +-------------------------------------------------------+
*  10 |                       OPNAPPLS                        |
*     +-------------------------------------------------------+
*  18 |                       OPNNODES                        |
*     +-------------------------------------------------------+
*  20
*
*** OPNBK - ISFC CP Application open control block
 
 
  OPNBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
OPNAPPLS       0010
OPNAPPLT       0000
OPNNODES       0018
OPNNODET       0008
OPNSIZE        0018 00000004
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:53:15 EDT.
Copyright IBM Corporation, 1990, 2022