DIUCV - 32-bit CP - V4R4.0

Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### DIUCV

Prolog

Control Block Contents
DIUCV DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### DIUCV Prolog

     NAME       : HCPDIUCV
     DESCRIPTION: DIRECTORY IUCV BLOCK
     DSECT      : DIUCV
     FUNCTION   : TO PRESERVE INFORMATION FROM THE "IUCV"
                  DIRECTORY CONTROL STATEMENT.  THERE WILL
                  BE ONE HCPDIUCV CREATED FOR EACH "IUCV"
                  STATEMENT IN THE SOURCE DIRECTORY.
     LOCATED BY : FIELDS DVMDIDAS AND DVMDIDSP IN DVMD
                  FIELDS DIUCDASD AND DIUCDISP IN DIUCV
                  GPR2 IN HCPIUBAC
                  GPR2 IN HCPIUBCO
                  GPR2 in HCPIUPCO
                  GPR5 in HCPUDRIA
                  GPR5 in HCPUDRID
     CREATED BY : HCPDIR, HCPUDRIA
     DELETED BY : HCPIUBAC, HCPIUBCO, HCPIUPCO

#### DIUCV Control Block Content

#### DIUCV DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      DIUCV          DIRECTORY IUCV BLOCK
    0000    0 Character    8 DIUCUSER       USERID AUTHORIZED TO CONNECT TO
    0008    8 Signed       4 DIUCDASD       DASD ADDRESS OF NEXT DIUCV CCPV
                                            for CKD DASD addresses PPPV for
                                            FBA DASD addresses
    000C   12 Signed       2 DIUCDISP       DISPLACEMENT OF NEXT DIUCV
    000E   14 Signed       2 DIUCMLIM       MESSAGE LIMIT
    0010   16 Bitstring    1 DIUCSTAT       FLAGS
              1... ....      DIUCPRTY       X'80' PRIORITY WAS SPECIFIED
    0011   17 Bitstring    1 DIUCFLAG       Flags for IUCV *IDENT dir. stmt.
              1... ....      DIUCGWAY       X'80' DIUCNAME is a gateway_LU
              .1.. ....      DIUCGLBL       X'40' DIUCNAME is a global
                                            resource
              ..1. ....      DIUCLCL        X'20' DIUCNAME is a local
                                            resource
              .... ..1.      DIUCRVK        X'02' Authorized to revoke
              .... ...1      DIUCIDEN       X'01' Authorized to identify
    0012   18 Bitstring    6 *              Reserved for future IBM use
    0018   24 Character    8 DIUCNAME       "RESANY", "GATEANY", or name of
                                            resource/gateway_LU (Only for
                                            IUCV *IDENT dir. stmt.)
              00000004       DIUCSIZE       (*-DIUCV+7)/8 DIUCV SIZE IN DW'S
              00000020       DIUCLEN        (*-DIUCV) DIUCV SIZE IN BYTES

#### DIUCV Storage Layout

    *** DIUCV - DIRECTORY IUCV BLOCK
    *
    *     +-------------------------------------------------------+
    *   0 |                       DIUCUSER                        |
    *     +---------------------------+-------------+-------------+
    *   8 |         DIUCDASD          |  DIUCDISP   |  DIUCMLIM   |
    *     +------+------+-------------+-------------+-------------+
    *  10 |:CSTAT|:CFLAG|/////////////////////////////////////////|
    *     +------+------+-----------------------------------------+
    *  18 |                       DIUCNAME                        |
    *     +-------------------------------------------------------+
    *  20
    *
    *** DIUCV - DIRECTORY IUCV BLOCK

#### DIUCV Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    DIUCDASD       0008
    DIUCDISP       000C
    DIUCFLAG       0011
    DIUCGLBL       0011 40
    DIUCGWAY       0011 80
    DIUCIDEN       0011 01
    DIUCLCL        0011 20
    DIUCLEN        0018 00000020
    DIUCMLIM       000E
    DIUCNAME       0018
    DIUCPRTY       0010 80
    DIUCRVK        0011 02
    DIUCSIZE       0018 00000004
    DIUCSTAT       0010
    DIUCUSER       0000

This information is based on z/VM V4R4.0. Last updated on 29 Jul 2003 at 15:27:37 EDT.
Copyright IBM Corporation, 1990, 2003