DGSBK Back to Index page
 
Prolog 
Control Block Contents 
   DGSBK 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.


  DGSBK Prolog Top of page
  
 NAME       : HCPDGSBK
 DESCRIPTION: Directory generic string block
 DSECT      : DGSBK
 FUNCTION   : The directory generic string block contains a
              character string created by a directory
              statement processed by HCPDIR.
 LOCATED BY : On DASD - DVMDWDAD/DVMDWDSP fields of HCPDVMD
              DVMDUDAD/DVMDUDSP fields of HCPDVMD
              DVMDRDAD/DVMDRDSP fields of HCPDVMD
              In storage - DVMDWDAD field of HCPDVMD
              DVMDUDAD field of HCPDVMD
              DVMDRDAD field of HCPDVMD
 CREATED BY : HCPDIR
              HCPUDPRD
 DELETED BY : HCPLGBFR
              HCPLGNUS
              HCPPXIQD
              HCPUDPRD
 RELOCATION CONSIDERATIONS : None
 COMMENTS   : This block is used to contain various
              string (text) fields in the object directory.
              The DGSLABEL field identifies which string a
              specific instance of this block contains.
              An "in-storage" copy of this block may contain
              data from the online directory or an ESM.
 
 
  DGSBK Control Block Content Top of page
  




 DGSBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      DGSBK          Directory generic string block
0000    0 Signed       4 DGSBKLEN       DGSBK block size in bytes
0004    4 Character    3 DGSLABEL       Label to validate this block. It
                                        is also used to identify the
                                        variable-length string starting
                                        at DGSTRING
0007    7 Bitstring    1 DGSVERS        Version code for this block
          00000000       DGSVERS0       X'00' DGSVERS0 Initial version
          00000008       DGSHDRBS       (*-DGSBK) Size of fixed-length
                                        portion of the DGSBK, in bytes
0008    8 Character    1 DGSTRING (0)   Start of variable-length string.
                                        It will contain a 1- to
                                        DGSMSIWD/DGSMSIUP/DGSMSFSR/
                                        DGSMSCOM-byte character string
             The following two fields are relevant only for
             COMMAND GSDBKs
0008    8 Address      1 DGSTRLEN       Command string length
0009    9 Character  220 DGSTRCMD (0)   Command string
          000003FF       DGSMSIWD       1023 Maximum allowed length of
                                        IWDIR
          000003FF       DGSMSIUP       1023 Maximum allowed length of
                                        IUPGM
          000003FF       DGSMSFSR       1023 Maximum allowed length of
                                        FSROOT
          00000BFF       DGSMSCOM       3071 Maximum COMMAND DGSBK length
          00000407       DGSMBIWD       (DGSHDRBS+DGSMSIWD) Maximum IWDIR
                                        DGSBK block size, in bytes
          00000407       DGSMBIUP       (DGSHDRBS+DGSMSIUP) Maximum IUPGM
                                        DGSBK block size, in bytes
          00000407       DGSMBFSR       (DGSHDRBS+DGSMSFSR) Maximum
                                        FSROOT DGSBK block size, in bytes
          00000C07       DGSMBCOM       (DGSHDRBS+DGSMSCOM) Maximum
                                        COMMAND DGSBK length
     **** THE VALUE OF FSMAXB FOR DATAMAP IS 4072
          00000FE8       DGSMB          FSMAXB Maximum DGSBK block size,
                                        in bytes
          00000FE0       DGSMS          (DGSMB-DGSHDRBS) Maximum length
                                        of DGSTRING
 
 
  DGSBK Storage Layout Top of page
  
          
*** DGSBK - Directory generic string block
*
*     +---------------------------+--------------------+------+
*   0 |         DGSBKLEN          |     DGSLABEL       |:VERS |
*     +------+--------------------+--------------------+------+
*   8 |:TRLEN|
*     +------+
*
*** DGSBK - Directory generic string block
 
 
  DGSBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
DGSBKLEN       0000
DGSHDRBS       0007 00000008
DGSLABEL       0004
DGSMB          0009 00000FE8
DGSMBCOM       0009 00000C07
DGSMBFSR       0009 00000407
DGSMBIUP       0009 00000407
DGSMBIWD       0009 00000407
DGSMS          0009 00000FE0
DGSMSCOM       0009 00000BFF
DGSMSFSR       0009 000003FF
DGSMSIUP       0009 000003FF
DGSMSIWD       0009 000003FF
DGSTRCMD       0009
DGSTRING       0008
DGSTRLEN       0008
DGSVERS        0007
DGSVERS0       0007 00000000
 
This information is based on z/VM 7.1.0 Last updated on 22 Jun 2018 at 11:49:05 EDT.
Copyright IBM Corporation, 1990, 2018