IDMBK | Back to Index page

| Prolog Control Block Contents IDMBK 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.

IDMBK Prolog | Top of page

     NAME       : HCPIDMBK
     DESCRIPTION: Spool Image Library Directory Member
                  Entry Block
     DSECT      : IDMBK
     FUNCTION   : To map out the directory member information
                  in a 3800 image library file.
     LOCATED BY : The directory members are located after
                  the IDHBK on the first directory record in
                  the file. The IDHNUMDE determines how many
                  IDMBKs there are on the directory record(s).
     CREATED BY : IMAGELIB command (HCPNMTBL)
                  IMAGEMOD command (DMSIMAGE)
     DELETED BY : All the contents of an IMG file, including
                  the IDMBKs, are deleted by the "PURGE IMG"
                  command processing (HCPCSUPU).
     RELOCATION CONSIDERATIONS : None

IDMBK Control Block Content | Top of page

     IDMBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      IDMBK          Spool Image Library Directory Member
    0000    0 Character    8 IDMNAME        Library Member name
    0008    8 Signed       4 IDMDISP        Starting displacement in library
    000C   12 Signed       4 IDMLEN         Length of member in bytes (this
                                            includes the IMHBK)
              00000010       IDMSIZE        *-IDMBK Size in bytes
              00000002       IDMSZDW        (*-IDMBK+7)/8 Size in doublewords

IDMBK Storage Layout | Top of page

    *** IDMBK - Spool Image Library Directory Member
    *
    *     +-------------------------------------------------------+
    *   0 |                       IDMNAME                         |
    *     +---------------------------+---------------------------+
    *   8 |         IDMDISP           |          IDMLEN           |
    *     +---------------------------+---------------------------+
    *  10
    *
    *** IDMBK - Spool Image Library Directory Member

IDMBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    IDMDISP        0008
    IDMLEN         000C
    IDMNAME        0000
    IDMSIZE        000C 00000010
    IDMSZDW        000C 00000002

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:28:31 EDT.
Copyright IBM Corporation, 1990, 2020