DAPPC Back to Index page
 
Prolog 
Control Block Contents 
   DAPPC 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.


  DAPPC Prolog Top of page
 
 NAME       : HCPDAPPC
 DESCRIPTION: Directory APPCPASS Security Parameter Block
 DSECT      : DAPPC
 FUNCTION   : To preserve information from the "APPCPASS"
              directory control statement.  There will be
              one DAPPC block created for each "APPCPASS"
              statement in the source directory.
              OR - To request security parameters (userid and its
              password) from the "APPCPASS" statement in the
              source directory by providing the locally_known_
              LU name.
              OR - To request security parameter (user's password)
              from the "APPCPASS" statement in the source
              directory by providing the locally_known_LU name
              and the userid.
 LOCATED BY : Fields DVMDADAS and DVMDADSP in DVMD
              Fields DAPPDASD and DAPPDISP in DAPPC
              GPR2 in HCPIUPCO
              GPR2 in HCPUDRAP
 CREATED BY : HCPDIR, HCPIUPCO
 DELETED BY : HCPDIR, HCPIUPCO
 SERIALIZED : 1. The directory lock (SYSDRLOK) is acquired
              in exclusive mode for DIRECTXA processing.
              2. The directory lock (SYSDRLOK) is acquired
              in shared mode by HCPUDRAP to copy the
              DAPPUSER and DAPPPASS fields.
 RELOCATION CONSIDERATIONS : None
 NOTES      : 1. DAPPLPWD is the actual length of the variable length
              password (1-8 bytes) in DAPPPASS.
              2. DAPPPASS is an encrypted version of the password
              with the same length.
 
 
  DAPPC Control Block Content Top of page
 

 DAPPC DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DAPPC Directory APPCPASS Security Parameter Block 0000 0 Signed 4 DAPPDASD DASD address of next DAPPC CCPV for CKD DASD addresses PPPV for FBA DASD addresses 0004 4 Signed 2 DAPPDISP Displacement of next DAPPC 0006 6 Bitstring 1 DAPPLPWD Actual length of the password 0007 7 Bitstring 1 * Reserved for future IBM use 0008 8 Character 16 DAPPLKLU (0) Locally_known_LU name 0008 8 Character 8 DAPPGLU Gateway_LU name 0010 16 Character 8 DAPPGKLU Gateway_known_LU name 0018 24 Character 8 DAPPUSER Target userid 0020 32 Character 8 DAPPPASS Target password (encrypted) 00000005 DAPPSIZE (*-DAPPC+7)/8 DAPPC size in DW's 00000028 DAPPLEN (*-DAPPC) DAPPC size in bytes
 
 
  DAPPC Storage Layout Top of page
 
          
*** DAPPC - Directory APPCPASS Security Parameter Block
*
*     +---------------------------+-------------+------+------+
*   0 |         DAPPDASD          |  DAPPDISP   |:PLPWD|//////|
*     +---------------------------+-------------+------+------+
*   8 |                       DAPPGLU                         |
*     +-------------------------------------------------------+
*  10 |                       DAPPGKLU                        |
*     +-------------------------------------------------------+
*  18 |                       DAPPUSER                        |
*     +-------------------------------------------------------+
*  20 |                       DAPPPASS                        |
*     +-------------------------------------------------------+
*  28
*
*** DAPPC - Directory APPCPASS Security Parameter Block
 
 
  DAPPC Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
DAPPDASD       0000
DAPPDISP       0004
DAPPGKLU       0010
DAPPGLU        0008
DAPPLEN        0020 00000028
DAPPLKLU       0008
DAPPLPWD       0006
DAPPPASS       0020
DAPPSIZE       0020 00000005
DAPPUSER       0018
 
This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:27:35 EDT.
Copyright IBM Corporation, 1990, 2020