MLEBK Back to Index page
 
Prolog 
Control Block Contents 
   MLEBK 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.


  MLEBK Prolog Top of page
 
 NAME       : HCPMLEBK
 DESCRIPTION: Member List Entry Block
 DSECT      : MLEBK
 FUNCTION   : The MLEBK contains information about each
              member in an open PDS
 LOCATED BY : OFBK.OFBMLEBK
              MLEBK.MLEFWD
 CREATED BY : HCPZIB
 DELETED BY : HCPZIB
              HCPZIC
 RELOCATION CONSIDERATIONS : None
 
 
  MLEBK Control Block Content Top of page
 

 MLEBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure MLEBK Member List Entry Block 0000 0 Address 4 MLEFWD A( next MLEBK ) 0004 4 Signed 2 MLEDATAL Length of MLEDATA 0006 6 Signed 2 * Reserved 0008 8 Character 8 MLENAME Member name 0010 16 Signed 4 MLEUSER1 Reserved for non-IBM use 0014 20 Signed 4 MLEUSER2 Reserved for non-IBM use 0018 24 Signed 4 MLESTRT Record where member starts. 001C 28 Signed 4 MLEEND Record where member ends. The member may end well before this record if the PDS needs to be compressed. When reading a member, one should always look for the End-of-Member separator: x'61FFFF61' 0020 32 Address 4 MLEBASE Address of base MLEBK for this alias member. 00000024 MLEBKSZ *-MLEBK Length of fixed portion 0024 36 Character 256 MLEDATA (0) Start of variable length data Directory data
 
 
  MLEBK Storage Layout Top of page
 
          
*** MLEBK - Member List Entry Block
*
*     +---------------------------+-------------+-------------+
*   0 |          MLEFWD           |  MLEDATAL   |/////////////|
*     +---------------------------+-------------+-------------+
*   8 |                       MLENAME                         |
*     +---------------------------+---------------------------+
*  10 |         MLEUSER1          |         MLEUSER2          |
*     +---------------------------+---------------------------+
*  18 |         MLESTRT           |          MLEEND           |
*     +---------------------------+---------------------------+
*  20 |         MLEBASE           |
*     +---------------------------+
*
*** MLEBK - Member List Entry Block
 
 
  MLEBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
MLEBASE        0020
MLEBKSZ        0020 00000024
MLEDATA        0024
MLEDATAL       0004
MLEEND         001C
MLEFWD         0000
MLENAME        0008
MLESTRT        0018
MLEUSER1       0010
MLEUSER2       0014
 
This information is based on z/VM 7.1.0 Last updated on 22 Jun 2018 at 11:50:54 EDT.
Copyright IBM Corporation, 1990, 2018