|
Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
LGFBK
Control Block Contents
LGFBK DSECT
Cross Reference (Contains links to field and bit definitions)
LGFBK Prolog
NAME : HCPLGFBK DESCRIPTION: LOGOFF control block DSECT : LGFBK FUNCTION : LOCATED BY : VMDLGFBK (origin VMDBK only) CREATED BY : HCPUSOPR DELETED BY : HCPUSOLC SERIALIZED : Master processor
LGFBK Control Block Content
LGFBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure LGFBK LOGOFF control block
LGFTRMLK is used to serialize terminal clean-up
processing (for LOGOFF, FORCE, DISCONNECT or LOGON HERE).
Terminal clean-up processing is done without console
function mode serialization. Any task performing terminal
clean-up must hold LGFTRMLK exclusive. If a second task
tries to get the lock it will be deferred until terminal
clean-up is complete. For instance if one user issues
FORCE DISCONNECT and another issues FORCE LOGOFF, when
FORCE LOGOFF goes for the lock it will be deferred until
FORCE DISCONNECT completes terminal clean-up.
Notes : If a thread of execution requires both CFM and the
LGFTRMLK, it must obtain CFM first and the LGFTRMLK
later. The LGFTRMLK should be released before the
thread relinquishes CFM.
0000 0 Dbl-Word 8 LGFTRMLK (3) Terminal clean-up lockword
0018 24 Character 8 LGFLOGID ID of user who initiated this
LOGOFF
0020 32 Character 8 LGFDSCID ID of user who initiated this
DISCONNECT
0028 40 Signed 4 LGFSKEL Pointer to skeleton VMDBK that
issued LOGON HERE
002C 44 Bitstring 1 LGFFLAGS Terminal clean-up flag byte
1... .... LGFNOMSG X'80' LGFNOMSG Do not send an
OPERATOR style message to the
FORCEr.
...1 .... LGFNOUSR X'10' LGFNOUSR No output should
be attempted to this user's
terminal
.... .1.. LGFSIGNL X'04' LGFSIGNL FORCEd as a result
of SIGNAL
Request flags and footprint area
002D 45 Bitstring 1 LGFFPRT1 Request/footprint flags
1... .... LGFDSCN X'80' LGFDSCN Disc msgs to the
user and operator are needed
.1.. .... LGFDSCD X'40' LGFDSCD Disc msgs to the
user and operator have been done
..1. .... LGFLGFUN X'20' LGFLGFUN Logoff msgs to the
user are needed
...1 .... LGFLGFUD X'10' LGFLGFUD Logoff msgs to the
user have been done
.... 1... LGFLGFON X'08' LGFLGFON Logoff msgs to the
operator are needed
.... .1.. LGFLGFOD X'04' LGFLGFOD Logoff msgs to the
operator have been done
.... ..1. LGFUSPFF X'02' LGFUSPFF HCPUSPFF terminal
processing has been completed.
002E 46 Bitstring 1 * (2) Reserved for future use
0030 48 Signed 4 LGFTMOUT Signal timeout
Data for the logoff/disconnect messages
0034 52 Character 10 LGFTRMID (0)
0034 52 Character 8 LGFLUNAM LU name logging off
003C 60 Character 2 LGFBLNKS Pad with blanks
0034 52 Character 4 LGFTTYPE Terminal type logging off
0038 56 Character 1 LGFBLANK One space is enough here
0039 57 Character 5 LGFDVNUM Device number (Lnnnn or nnnn)
003E 62 Bitstring 1 LGFFENCE End of substitution fence
00000008 LGFSIZE (*-LGFBK+7)/8 Size, in
doublewords, of LGFBK
LGFBK Storage Layout
*** LGFBK - LOGOFF control block
*
* +-------------------------------------------------------+
* 0 | |
* = LGFTRMLK =
* | |
* +-------------------------------------------------------+
* 18 | LGFLOGID |
* +-------------------------------------------------------+
* 20 | LGFDSCID |
* +---------------------------+------+------+-------------+
* 28 | LGFSKEL |:FLAGS|:FPRT1|/////////////|
* +---------------------------+------+------+-------------+
* 30 | LGFTMOUT | LGFLUNAM- |
* +---------------------------+-------------+-------------+
* 38 | -(034) | LGFBLNKS | 3E
* +---------------------------+-------------+
*
*** LGFBK - LOGOFF control block
*** Overlay for LGFTRMID in LGFBK
*
* +---------------------------+
* 30 ... 34 | LGFTTYPE |
* +------+--------------------+-------------+------+------+
* 38 |:BLANK| LGFDVNUM |:FENCE| 3F
* +------+----------------------------------+------+
*
*** Overlay for LGFTRMID in LGFBK
LGFBK Cross Reference
Symbol Dspl Value -------------- ---- ----- LGFBLANK 0038 LGFBLNKS 003C LGFDSCD 002D 40 LGFDSCID 0020 LGFDSCN 002D 80 LGFDVNUM 0039 LGFFENCE 003E LGFFLAGS 002C LGFFPRT1 002D LGFLGFOD 002D 04 LGFLGFON 002D 08 LGFLGFUD 002D 10 LGFLGFUN 002D 20 LGFLOGID 0018 LGFLUNAM 0034 LGFNOMSG 002C 80 LGFNOUSR 002C 10 LGFSIGNL 002C 04 LGFSIZE 003E 00000008 LGFSKEL 0028 LGFTMOUT 0030 LGFTRMID 0034 LGFTRMLK 0000 LGFTTYPE 0034 LGFUSPFF 002D 02
Copyright IBM Corporation, 1990, 2009