Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be
used for diagnosis only.
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CDBOVL
Prolog
Control Block Contents
CDBOVL DSECT
Storage Layout
Cross Reference (Contains links to field and bit definitions)
CDBOVL Prolog
NAME : DMSCDB
DESCRIPTION: COMDIR CONTROL BLOCK
DSECT : CDBOVL
FUNCTION : COMDIR Info Overlay
CDBOVL Control Block Content
CDBOVL DSECT
Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure CDBOVL COMDIR CONTROL BLOCK
0000 0 Character 18 CDBFID filespec
0000 0 Character 8 CDBFN file name
0008 8 Character 8 CDBFT file type
0010 16 Character 2 CDBFM file mode
0012 18 Character 1 CDBFLG flag byte
0013 19 Character 1 *
0014 20 Address 4 CDBBLK ptr to NAMEFxxx SCBLOCK equates
for mapping the flag bytes for
CDBFLG,CDBSFLG,CDBUFLG
1... .... CDBSSTAT X'80' system comdir status
.1.. .... CDBSMOD X'40' system model usage
..1. .... CDBSSPEC X'20' system file id specified
...1 .... CDBSLOAD X'10' system file id loaded
1... .... CDBUSTAT X'80' user comdir status
.1.. .... CDBUMOD X'40' user model usage
..1. .... CDBUSPEC X'20' user file id specified
...1 .... CDBULOAD X'10' user file id loaded
1... .... CDBSTAT X'80' comdir on/off
.1.. .... CDBMODEL X'40' model usage static-0
dynamic-1
..1. .... CDBSPEC X'20' file id specified
...1 .... CDBLOAD X'10' file id loaded
CDBOVL Storage Layout
*** CDBOVL - COMDIR CONTROL BLOCK
*
* +-------------------------------------------------------+
* 0 | |
* = CDBFID =
* | +-----------------------------------------+
* | | 12
* +-------------+
*
*** CDBOVL - COMDIR CONTROL BLOCK
*** Overlay for CDBFID in CDBOVL
*
* +-------------------------------------------------------+
* 0 | CDBFN |
* +-------------------------------------------------------+
* 8 | CDBFT |
* +-------------+------+------+---------------------------+
* 10 | CDBFM |CDBFLG|//////| CDBBLK |
* +-------------+------+------+---------------------------+
* 18
*
*** Overlay for CDBFID in CDBOVL
CDBOVL Cross Reference (contains links to field and bit definitions)
Symbol Dspl Value
-------------- ---- -----
CDBBLK 0014
CDBFID 0000
CDBFLG 0012
CDBFM 0010
CDBFN 0000
CDBFT 0008
CDBLOAD 0014 10
CDBMODEL 0014 40
CDBSLOAD 0014 10
CDBSMOD 0014 40
CDBSPEC 0014 20
CDBSSPEC 0014 20
CDBSSTAT 0014 80
CDBSTAT 0014 80
CDBULOAD 0014 10
CDBUMOD 0014 40
CDBUSPEC 0014 20
CDBUSTAT 0014 80
This information is
based on VM/ESA 2.4.0.
Last updated on 18 Aug 1999 at 09:19:05 EDT.
Copyright IBM Corporation, 1990, 1999
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