CSEEHDBK Back to Index page
 
Prolog 
Control Block Contents 
   CSEEHDBK 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.


  CSEEHDBK Prolog Top of page
  
 NAME       : CSEEHDBK
 DESCRIPTION: CSL header record for ECKD devices
 DSECT      : CSEEHDBK
 FUNCTION   : Map the Cross System Link header record for
              ECKD devices.  There is one header record on
              every volume that has been XLINK FORMATted
              with an ECKD channel program.
 LOCATED BY : N/A
 CREATED BY : N/A
 DELETED BY : N/A
 SERIALIZED : N/A
 RELOCATION CONSIDERATIONS : None
 
 
  CSEEHDBK Control Block Content Top of page
  




 CSEEHDBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      CSEEHDBK       CSL header record for ECKD devices
0000    0 Character    8 ISFEHHDR       CSE version, release, level
0008    8 Character    8 ISFEUSER       Userid who did the XLINK FORMAT
0010   16 Character    8 ISFESYSN       System that did the XLINK FORMAT
0018   24 Character    8 ISFEDATE       Date of XLINK FORMAT
0020   32 Character    8 ISFETIME       Time of XLINK FORMAT
0028   40 Character    8 ISFECHK        Indicates formatted for ECKD
0030   48 Signed       2 ISFEFREC       Number of records formatted
0032   50 Bitstring    1 * (6)          Reserved for future use
          00000038       ISFEHDRL       *-CSEEHDBK Length of header
                                        record
 
 
  CSEEHDBK Storage Layout Top of page
  
          
*** CSEEHDBK - CSL header record for ECKD devices
*
*     +-------------------------------------------------------+
*   0 |                       ISFEHHDR                        |
*     +-------------------------------------------------------+
*   8 |                       ISFEUSER                        |
*     +-------------------------------------------------------+
*  10 |                       ISFESYSN                        |
*     +-------------------------------------------------------+
*  18 |                       ISFEDATE                        |
*     +-------------------------------------------------------+
*  20 |                       ISFETIME                        |
*     +-------------------------------------------------------+
*  28 |                       ISFECHK                         |
*     +-------------+-----------------------------------------+
*  30 |  ISFEFREC   |/////////////////////////////////////////|
*     +-------------+-----------------------------------------+
*  38
*
*** CSEEHDBK - CSL header record for ECKD devices
 
 
  CSEEHDBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
ISFECHK        0028
ISFEDATE       0018
ISFEFREC       0030
ISFEHDRL       0032 00000038
ISFEHHDR       0000
ISFESYSN       0010
ISFETIME       0020
ISFEUSER       0008
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:46:40 EDT.
Copyright IBM Corporation, 1990, 2022