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