VOLSECT Back to Index page
 
Prolog 
Control Block Contents 
   VOLSECT DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This page documents intended Programming Interfaces that
allow the customer to write programs to obtain the services of z/VM.


  VOLSECT Prolog Top of page
 
 NAME       : VOLSECT
 DESCRIPTION: Volume ID Storage
 DSECT      : VOLSECT
 NOTES      : VOLSECT is primarily used to hold
              additional user supplied volume ID's. If the
              user supplied more than 16 volume ID's storage
              is obtained for a VOLSECT which can hold 24
              additional volume ID's. The field 'LABVSECT' in
              LABSECT points to the first VOLSECT. Additional
              VOLSECTs are forward pointed to by the field
              'VOLNSECT' contained in the first 4 bytes of a
              VOLSECT.
 
 
  VOLSECT Control Block Content Top of page
 

 VOLSECT DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure VOLSECT Volume ID Storage 0000 0 Address 4 VOLNSECT FOWRARD CHAIN POINTER 0004 4 Character 192 VOLAVOLS SPACE FOR 24 ADDITIONAL VOLIDS 00C4 196 Bitstring 4 VOLEND FENCE FOR END OF VOLIDS 00000019 VOLSIZE (*-VOLSECT+7)/8 SIZE OF VOLSECT IN DOUBLE WORDS
 
 
  VOLSECT Storage Layout Top of page
 
 
*** VOLSECT - Volume ID Storage
*
*     +---------------------------+---------------------------+
*   0 |         VOLNSECT          |                           |
*     +---------------------------+                           |
*   8 |                                                       |
*     =                       VOLAVOLS                        =
*     |                           +---------------------------+
*  C0 |                           |          VOLEND           |
*     +---------------------------+---------------------------+
*  C8
*
*** VOLSECT - Volume ID Storage
 
 
  VOLSECT Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
VOLAVOLS       0004
VOLEND         00C4
VOLNSECT       0000
VOLSIZE        00C4 00000019
 
This information is based on z/VM 6.4.0.
Last updated on 24 Aug 2016 at 09:22:09 EDT.
Copyright IBM Corporation, 1990, 2016