FSBK Back to Index page
 
Prolog 
Control Block Contents 
   FSBK 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.


  FSBK Prolog Top of page
  
 NAME       : HCPFSBK
 DESCRIPTION: CP File Status Block
 DSECT      : FSBK
 FUNCTION   : The FSBK contains information about a single
              file on the mini-disk
 LOCATED BY : FSBK.FSHFSBR(i)
              OFBK.OFBFSB
 CREATED BY : HCPZIA
 DELETED BY : HCPZIA
              HCPZIR
 RELOCATION CONSIDERATIONS : None
 COMMENTS   : The CMS FSTD is copied in total.  CMS fields that CP
              does not use are "reserved" or just plain ignored.
              Some (FSBOPENS, for example) are redefined over CMS
              fields that CP does not care about.
              Individual FSBK storage areas are actually contiguous
              sections in full pages that are pointed to by FSHBKs.
              Individual FSBKs are never allocated by HCPGETST and
              never released by HCPRELST.
 
 
  FSBK Control Block Content Top of page
  




 FSBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      FSBK           CP File Status Block
0000    0 Character   16 FSBFID (0)     File-id, filename-filetype
0000    0 Character    8 FSBFIDFN       File-id, filename portion
0008    8 Character    8 FSBFIDFT       File-id, filetype portion
0010   16 Signed       4 FSBOPENS       Count of times opened
0014   20 Signed       4 FSBCLOSD       Count of times closed
0018   24 Signed       4 FSBOPEND       Count of times was already open
001C   28 Signed       2 *
001E   30 Character    1 FSBRECFM       - F*1 - RECORD FORMAT - F OR V
          11.. .11.      FSBDFIX        C'F' FSBDFIX - Fixed record
                                        format
          111. .1.1      FSBDVAR        C'V' FSBDVAR - Variable record
                                        format
001F   31 Bitstring    1 FSBFLAG        Flag byte for FSBK
          1... ....      FSBCACHE       X'80' FSBCACHE File has been
                                        cached
          .... 1...      FSBCNTRY       X'08' FSBCNTRY Century for date
                                        in FSBDATIM (0=19, 1=20)
0020   32 Signed       4 FSBLRECL       Longest record in file
0024   36 Signed       4 *
0028   40 Signed       4 FSBFOP         File Origin Pointer
002C   44 Signed       4 FSB#DBC        Number of data blocks
0030   48 Signed       4 FSBRECDS       Last record in file
0034   52 Signed       1 FSB#LVL        Levels of pointer blocks
0035   53 Bitstring    1 *
0036   54 Character    6 FSBDATIM       Date & Time (YY MM DD HH MM SS)
003C   60 Character    1 *
003D   61 Bitstring    1 *
003E   62 Character    2 *
0040   64 Dbl-Word     8 FSB$END (0)    End of FSBK
          00000040       FSBSIZEB       (*-FSBK) Size in bytes
          00000008       FSBSIZED       (*-FSBK+7)/8 Size in d-words
 
 
  FSBK Storage Layout Top of page
  
          
*** FSBK - CP File Status Block
*
*     +-------------------------------------------------------+
*   0 |                       FSBFIDFN                        |
*     +-------------------------------------------------------+
*   8 |                       FSBFIDFT                        |
*     +---------------------------+---------------------------+
*  10 |         FSBOPENS          |         FSBCLOSD          |
*     +---------------------------+-------------+------+------+
*  18 |         FSBOPEND          |/////////////|:RECFM|:FLAG |
*     +---------------------------+-------------+------+------+
*  20 |         FSBLRECL          |///////////////////////////|
*     +---------------------------+---------------------------+
*  28 |          FSBFOP           |         FSB#DBC           |
*     +---------------------------+------+------+-------------+
*  30 |         FSBRECDS          |:#LVL |//////|   (036)-    |
*     +---------------------------+------+------+-------------+
*  38 |        -FSBDATIM          |//////|//////|/////////////|
*     +---------------------------+------+------+-------------+
*
*** FSBK - CP File Status Block
 
 
  FSBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
FSB$END        0040
FSB#DBC        002C
FSB#LVL        0034
FSBCACHE       001F 80
FSBCLOSD       0014
FSBCNTRY       001F 08
FSBDATIM       0036
FSBDFIX        001E C6
FSBDVAR        001E E5
FSBFID         0000
FSBFIDFN       0000
FSBFIDFT       0008
FSBFLAG        001F
FSBFOP         0028
FSBLRECL       0020
FSBOPEND       0018
FSBOPENS       0010
FSBRECDS       0030
FSBRECFM       001E
FSBSIZEB       0040 00000040
FSBSIZED       0040 00000008
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:53:13 EDT.
Copyright IBM Corporation, 1990, 2022