DALBK Back to Index page
Control Block Contents 
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.

  DALBK Prolog Top of page
 DESCRIPTION: Dumped Access List Block
 FUNCTION   : Contains Dump information for access lists
 CREATED BY : This control block is used to map 4K record(s)
              in dumps.  HCPVMYAL uses this control block
              when putting the access list information into
              the 4K records for VMDUMPs.
              HCPDMP (Hard ABEND dumps and snapdumps dumps),
              HCPABF (Soft Abend dumps) and
              HCPSAD (StandAlone dumps) use this
              control block when building a dummy DALBK.
 DELETED BY : Not applicable
 COMMENTS   : DALPAGCT is the number of access list
              entries that a one page DALBK can map.
              If DALVALID is greater than DALPAGCT, then
              when the dump viewing facility has processed
              DALPAGCT entries it must read the next 4K page
              and base the DALBK at that page.  DALENTRY(1)
              on the first DALBK will be the first valid or
              revoked access list entry.  DALENTRY(1) on
              the second DALBK will be the (DALPAGCT+1)th
              valid or revoked access list entry.
              DALENTRY(1) on the third DALBK will be the
              (2*DALPAGCT + 1)th valid or revoked access
              list entry and so on.
              The fields DALVALID and DALINVLD will be set
              in the first and last DALBK.
              VM Dump Tool does not use any information in
              this control block.
  DALBK Control Block Content Top of page

 DALBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DALBK Dumped Access List Block 0000 0 Character 8 DALBKID Identification string 0008 8 Signed 2 DALVALID No. of valid/revoked entries 000A 10 Signed 2 DALINVLD Number of invalid entries 0000000C DALMLEN *-DALBK Length of Main section Repeatable section follows - re-used depending upon the number of entries. 000C 12 Signed 2 DALENTRY (0) 000C 12 Character 8 DALASIT eASIT 0014 20 Signed 4 DALALET ALET 0018 24 Character 33 DALSPCID Space id in string form 0039 57 Character 2 * Reserved for IBM use 003B 59 Bitstring 1 DALSTATE State of access list entry 1... .... DALREVKD X'80' DALREVKD Entry-is-revoked bit .1.. .... DALREADO X'40' DALREADO Access is Read/only. If not on, then access is Read/Write ..1. .... DALPAGEX X'20' DALPAGEX Access is pagex 00000030 DALENTLN *-DALASIT Length of each entry 00000008 DALSIZE (*-DALBK+7)/8 Size in double words DALPAGCT will contain the number of access list entries that a one page DALBK can map 00000055 DALPAGCT (4096-DALMLEN)/DALENTLN
  DALBK Storage Layout Top of page
*** DALBK - Dumped Access List Block
*     +-------------------------------------------------------+
*   0 |                       DALBKID                         |
*     +-------------+-------------+---------------------------+
*   8 |  DALVALID   |  DALINVLD   |         DALASIT-          |
*     +-------------+-------------+---------------------------+
*  10 |          -(00C)           |         DALALET           |
*     +---------------------------+---------------------------+
*  18 |                                                       |
*     =                       DALSPCID                        =
*     |      +-------------+------+---------------------------+
*  38 |      |/////////////|:STATE| 3C
*     +------+-------------+------+
*** DALBK - Dumped Access List Block
  DALBK Cross Reference Top of page
Symbol         Dspl Value
-------------- ---- -----
DALALET        0014
DALASIT        000C
DALBKID        0000
DALENTLN       003B 00000030
DALENTRY       000C
DALINVLD       000A
DALMLEN        000A 0000000C
DALPAGCT       003B 00000055
DALPAGEX       003B 20
DALREADO       003B 40
DALREVKD       003B 80
DALSIZE        003B 00000008
DALSPCID       0018
DALSTATE       003B
DALVALID       0008
This information is based on z/VM 6.3.0 Last updated on 22 May 2013 at 13:54:10 EDT.
Copyright IBM Corporation, 1990, 2013