Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only.

NSSBK

Prolog  

Control Block Contents  

NSSBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

NSSBK Prolog

 NAME       : HCPNSSBK
 DESCRIPTION: SAVESEG/SAVESYS parameter control block
 DSECT      : NSSBK
 FUNCTION   : The HCPNSSBK is a parameter area used for
              SAVESEG/SAVESYS.
 LOCATED BY : None
 CREATED BY : HCPNSS
 DELETED BY : HCPNSS
 

NSSBK Control Block Content



NSSBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      NSSBK          SAVESEG/SAVESYS parameter control
                                        block
0000    0 Bitstring    1 NSSWRKFG       Work flag
          .... ...1      NSSAVSEG       X'01' Indicates a SAVESEG command
          .... ..1.      NSSAVSYS       X'02' Indicates a SAVESYS command
          .... .1..      NSSVSNTQ       X'04' Indicates that a SNTBK is
                                        placed on Saveseg/Savesys SNTBK
                                        queue
          .... 1...      NSSERRCL       X'08' Indicates that an error was
                                        detected when closing the SDF
          ...1 ....      NSSDFOPN       X'10' Indicates the SDF found by
                                        HCPSDFSC is open
          ..1. ....      NSSNOTFD       X'20' Indicates that the system
                                        specified in the SAVESYS cmd was
                                        not found
0001    1 Bitstring    1 NSSTATFG       Status flag
          1... ....      NSSSSPOR       X'80' Indicates that the segment
                                        space's SDF was found opened for
                                        read
          .1.. ....      NSSSSPOP       X'40' Indicates that the segment
                                        space's SDF was found opened
0002    2 Bitstring    1 NSSLCKFG       *NSS SDF queue lock status
          1... ....      NSSSDFEX       X'80' Indicates that the *NSS SDF
                                        queue lock is held exclusively
          ..1. ....      NSSSDFNO       X'20' Indicates that the *NSS SDF
                                        queue lock is not held
0003    3 Bitstring    1 *              Reserved for IBM furture usage
          00000001       NSSBKDSZ       (*-NSSBK+7)/8 NSSBK block size in
                                        DW's
          00000004       NSSBKBSZ       (*-NSSBK) NSSBK block size in
                                        bytes
 

NSSBK Storage Layout

*** NSSBK - SAVESEG/SAVESYS parameter control block
*
*     +------+------+------+------+
*   0 |:WRKFG|:TATFG|:LCKFG|//////| 4
*     +------+------+------+------+
*
*** NSSBK - SAVESEG/SAVESYS parameter control block
 

NSSBK Cross Reference

(contains links to field and bit definitions)
Symbol         Dspl Value
-------------- ---- -----

NSSAVSEG       0000 01

NSSAVSYS       0000 02

NSSBKBSZ       0003 00000004

NSSBKDSZ       0003 00000001

NSSDFOPN       0000 10

NSSERRCL       0000 08

NSSLCKFG       0002

NSSNOTFD       0000 20

NSSSDFEX       0002 80

NSSSDFNO       0002 20

NSSSSPOP       0001 40

NSSSSPOR       0001 80

NSSTATFG       0001

NSSVSNTQ       0000 04

NSSWRKFG       0000
This information is based on VM/ESA 2.4.0.
Last updated on 3 Aug 1999 at 12:17:56 EDT.
Copyright IBM Corporation, 1990, 1999