LGNBK | Back to Index page

| Prolog Control Block Contents LGNBK 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.

LGNBK Prolog | Top of page

     NAME       : HCPLGNBK
     DESCRIPTION: LOGON work buffer
     DSECT      : LGNBK
     FUNCTION   : Used by the LOGON/(X)AUTOLOG code as a work area
                  for LOGON/(X)AUTOLOG processing.
     LOCATED BY : NONE
     CREATED BY : HCPAUT   HCPLOG
     DELETED BY : HCPLGB
     RELOCATION CONSIDERATIONS : None

LGNBK Control Block Content | Top of page

     LGNBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      LGNBK          LOGON work buffer
    0000    0 Signed       4 LGNFLGS (0)    Parameter flags for logon
    0000    0 Bitstring    1 LGNFLAG        Command line option flag 1
              1... ....      LGNAUTO        X'80' LGNAUTO An AUTOLOG command
                                            in process
              .1.. ....      LGNNOIPL       X'40' LGNNOIPL No system IPL to
                                            be performed
              ..1. ....      LGNAPL         X'20' LGNAPL APL option specified
              ...1 ....      LGNTEXT        X'10' LGNTEXT TEXT option
                                            specified
              .... 1...      LGNQUIET       X'08' LGNQUIET QUIET option
                                            specified
              .... .1..      LGNDATA        X'04' LGNDATA Data line present
                                            with command
              .... ..1.      LGNIPL         X'02' LGNIPL IPL option specified
              .... ...1      LGNNORUN       X'01' LGNNORUN NORUN option
                                            specified
    0001    1 Bitstring    1 LGNFLAG2       Command line option flag 2
              1... ....      LGNPASS        X'80' LGNPASS PASSWORD option
                                            specified
              .1.. ....      LGNPROMT       X'40' LGNPROMT PROMPT option
                                            specified
              ..1. ....      LGNDIRCT       X'20' LGNDIRCT DIRECTORY option
                                            specified
              ...1 ....      LGNHERE        X'10' LGNHERE HERE option
                                            specified
              .... 1...      LGNSYNCH       X'08' LGNSYNCH SYNCH option
                                            specified
              .... .1..      LGNMASK        X'04' LGNMASK Mask option
                                            specified
              .... ..1.      LGNSECLB       X'02' LGNSECLB SECLABEL option
                                            specified
              .... ...1      LGNMCH         X'01' LGNMCH MACHINE option
                                            specified
    0002    2 Bitstring    1 LGNFLAG3       Program execution flag 1
              1... ....      LGNNOFAT       X'80' LGNNOFAT Nonfatal error -
                                            return to caller
              .1.. ....      LGNRECON       X'40' LGNRECON User to be
                                            reconnected
              ..1. ....      LGNMAXU        X'20' LGNMAXU This user is
                                            allowed to LOGON even if the
                                            maxusers limit has been exceeded.
              ...1 ....      LGNFLBK        X'10' LGNFLBK FALLBACK option
                                            specified
              .... 1...      LGNASYNC       X'08' LGNASYNC Processing
                                            Asynchronous XAUTOLOG
              .... ..1.      LGNALOGS       X'02' LGNALOGS Autolog process -
                                            first pass through
                                            (X)AUTOLOG/LOGON modules
              .... ...1      LGNDLOCK       X'01' LGNDLOCK User directory
                                            entry is locked
    0003    3 Bitstring    1 LGNFLAG4       Program execution flag 2
              1... ....      LGNDFRWK       X'80' LGNDFRWK Indicates that the
                                            deferred work counter for target
                                            VMDBK of a reconnect has been
                                            incremented.
              .1.. ....      LGNDEV         X'40' LGNDEV ON option specified
              ..1. ....      LGNLDEV        X'20' LGNLDEV Logical device
                                            address supplied
              .... .1..      LGNNOCMD       X'04' LGNNOCMD Indicates this is
                                            a dummy logon from the LOGO
                                            panel.
              .... ..1.      LGNNAUDT       X'02' LGNNAUDT Indicates that
                                            LOGON/(X)AUTOLOG has gone far
                                            enough that HCPLGALF should no
                                            longer be called.
              .... ...1      LGNNOPAS       X'01' LGNNOPAS Password=NOPASS in
                                            the directory.
    0004    4 Bitstring    1 LGNFLAG5       Logon work area flag 5
              1... ....      LGNAUTH        X'80' LGNAUTH User passed
                                            password(ESM) check so we need to
                                            call HCPJRLOG
              .1.. ....      LGNBADPW       X'40' LGNBADPW User fail
                                            password(ESM) check so we need to
                                            call HCPJRLPW
              ..1. ....      LGNPRMPT       X'20' LGNPRMPT Causes HCPLGALF to
                                            display logon prompt on exit.
              ...1 ....      LGNNOPMT       X'10' LGNNOPMT Do not force the
                                            user even though we should not
                                            display the logon prompt.
              .... 1...      LGNLOGBY       X'08' LGNLOGBY A BYUSER entered
                                            the LOGON command
              .... .1..      LGNADJ         X'04' LGNADJ Adjunct virtual
                                            machine logon
              .... ..1.      LGNCHGPW       X'02' LGNCHGPW CHANGE option
                                            specified
              .... ...1      LGNMACHZ       X'01' LGNMACHZ MACHINE Z
                                            specified
    0005    5 Bitstring    1 LGNCMD
              00000004       LGNLOGON       X'04' LGNLOGON This is a LOGON
                                            command
              00000008       LGNAUTOL       X'08' LGNAUTOL This is an AUTOLOG
                                            command
              0000000C       LGNXAUT        X'0C' LGNXAUT This is a CLASS A
                                            or B XAUTOLOG
              00000010       LGNXAUTG       X'10' LGNXAUTG This is a CLASS G
                                            XAUTOLOG
              00000014       LGNAUTSI       X'14' LGNAUTSI This is a system
                                            initialization autolog.
              00000018       LGNAUTPR       X'18' LGNAUTPR This is a TSAF
                                            private server autolog.
              0000001C       LGNLOGOP       X'1C' LGNLOGOP This is the
                                            operator logging on system
                                            initialization.
    0006    6 Bitstring    1 LGNMLVL
              1... ....      VMDMSGON       X'80' VMDMSGON CONTROLS WHETHER
                                            MESSAGES SENT BY OTHER USERS ARE
                                            DISPLAYED. (CONTROLLED BY THE SET
                                            MSG OR TERMINAL MSG COMMANDS)
              .1.. ....      VMDWNGON       X'40' VMDWNGON CONTROLS WHETHER
                                            MESSAGES SENT USING THE WARNING
                                            COMMAND ARE DISPLAYED.
                                            (CONTROLLED BY THE SET WNG OR
                                            TERMINAL WNG COMMANDS)
              ..1. ....      VMDMCODE       X'20' VMDMCODE CONTROLS ERROR
                                            MESSAGE DISPLAY OF THE ERROR
                                            MESSAGE CODE. (CONTROLLED BY THE
                                            SET EMSG OR TERMINAL EMSG
                                            COMMANDS)
              ...1 ....      VMDMTEXT       X'10' VMDMTEXT CONTROLS ERROR
                                            MESSAGE DISPLAY OF THE ERROR
                                            MESSAGE TEXT. (CONTROLLED BY THE
                                            SET EMSG OR TERMINAL EMSG
                                            COMMANDS)
              .... 1...      VMDSPMSG       X'08' VMDSPMSG CONTROLS WHETHER
                                            SPECIAL MESSAGES SENT BY OTHER
                                            USERS CAN BE RECEIVED.
                                            (CONTROLLED BY THE SET SMSG
                                            COMMAND)
              .... .1..      VMDMIMSG       X'04' VMDMIMSG CONTROLS THE
                                            DISPLAY OF SELECTED CP COMMAND
                                            INFORMATIONAL RESPONSES. IF SET
                                            THE RESPONSES ARE DISPLAYED, IF
                                            NOT THE RESPONSES WILL NOT BE
                                            DISPLAYED. (CONTROLLED BY THE SET
                                            IMSG AND TERMINAL IMSG COMMANDS)
              .... ...1      VMDMCNFG       X'01' VMDMCNFG Message level set
                                            from system configuration file
    0007    7 Bitstring    1 LGNFLAG6       Additional logon flags
              1... ....      LGNE54         X'80' LGNE54 Error 54 detected
                                            prior to auth
              .1.. ....      LGNE5413       X'40' LGNE5413 Error 5413
                                            detected prior to auth
              ..1. ....      LGNE361        X'20' LGNE361 Error 361 detected
                                            prior to auth
    0008    8 Character    8 LGNACNUM       Account number
    0010   16 Signed       4 LGNILEN        IPL command length
    0014   20 Address      4 LGNIADDR       IPL command address
    0018   24 Address      4 LGNDVMD        Directory buffer address
    001C   28 Address      4 LGNCDATA       Pointer to console input data.
    0020   32 Signed       4 LGNCDATL       Length of console input data.
    0024   36 Address      4 LGNCMDGS       COMMAND GSDBK queue address
    0028   40 Dbl-Word     8 LGNKSTOR       Storage size in K
    0028   40 Signed       4 LGNKSTR0       High word of LGNKSTOR
    002C   44 Signed       4 LGNKSTR1       Low word of LGNLSTOR
    0030   48 Character    3 LGNMACH        Machine setting (i.e. 370, etc)
    0033   51 Bitstring    1 LGNDDEF        Maps to DVMDDEF
              1... ....      DVMDXSTR       X'80' DVMDXSTR EXTENDED STORAGE
                                            FACILITY ALLOWED
              .1.. ....      DVMDNOP        X'40' DVMDNOP 'NOPDATA' STATEMENT
                                            IN ENTRY
              ..1. ....      DVMDNLG        X'20' DVMDNLG VIRTUAL MACHINE'S
                                            PSWD IS NOLOG
              ...1 ....      DVMDVXC        X'10' DVMDVXC GUEST IS A VIRTUAL
                                            ESA/XC MACHINE
              .... 1...      DVMDVESA       X'08' DVMDVESA GUEST IS A VIRTUAL
                                            ESA
              .... .1..      DVMDYES        X'04' DVMDYES USER HAS AT LEAST
                                            ONE DDEV
              .... ..1.      DVMDVXA        X'02' DVMDVXA GUEST IS A VIRTUAL
                                            XA
              .... ...1      DVMDV370       X'01' DVMDV370 GUEST IS A VIRTUAL
                                            370
    0034   52 Signed       4 LGNVMDBK       VMDBK address of target VMDBK for
                                            a reconnect.
    0038   56 Signed       4 LGNTODON       VMDTODON of the target VMDBK for
                                            a reconnect.
    003C   60 Address      4 LGNEFTID       The address of the effective
                                            userid that is causing a LGNAUTPR
                                            autolog to be done.
          This following is the paramter section for HCPRPWRD.
    0040   64 Dbl-Word     8 LGNPWDPM (0)   Parameters for HCPPWDRD
    0040   64 Address      4 LGNPWDIN       Address of input password area
    0044   68 Address      4 LGNPWDPP       Address of the password prompt
    0048   72 Bitstring    1 LGNPWLEN       Password length
          The following byte is to manage the fretting for the
          LGNBK and its related control blocks. It is zero if this
          process should not fret the LGNBK and is X'FF' if this
          process should fret the LGNBK. It is updated with TEST AND
          SET.
    0049   73 Bitstring    1 LGNFRET        Fret byte
    004A   74 Signed       2 LGNDEVNO       Console device number
    004C   76 Character  139 LGNBUFF        Message buffer (see description
                                            on the next page)
    00D7  215 Bitstring    1 *              Alignment
    00D8  216 Character    5 LGNLNG         Language ID Work Area for HCPLGN
    00DD  221 Bitstring    3 *              Reserved for IBM use
          The following field is used when the LGNBK is for an
          Identity and the logon process merges DVMDs.
    00E0  224 Address      4 LGNDVMDS       DVMD address for Subconfig
          The following address is a pointer to the FCLBK for the
          userid that is being logged on (or 0 if there are no
          LOADDEV statements). In the case of logging on an Identity
          userid, initially this field will point to the Identity
          FCLBK or 0.  Once the appropriate Subconfig id has been
          determined and its DVMD has been read in, its associated
          FCLBK will be created and merged in with the Identity FCLBK
          stored here.
    00E4  228 Address      4 LGNFCLBK       Pointer to USER, IDENTITY, or
                                            merged FCLBK (LOADDEV)
    00E8  232 Dbl-Word     8 LGNACIPM (0)   Area for ACIPARMS
              0000001D       LGNBKL         (*-LGNBK+7)/8 Size of LGNBK in
                                            doublewords
          LGNBUFF  - Buffer/work area for constructing message
                     substitution data.
          The first field in this area (MSGPDUID) contains the
          userid padded with blanks (if necessary) of the user
          being logged on.  This field is constructed from the
          userid on the command line and is preserved throughout
          the process of logging on the user.  It is used for a
          couple of purposes.  First, it is used as input to all
          routines requiring a userid (such as HCPUDR).  Second,
          it is used as substitution data for the "tag" placed on
          messages issued for the asynchronous XAUTOLOG command.
          For this reason, it is immediately followed by a delimiter
          (initially set to X'FF').
          Immediately following MSGPDUID and its delimiter
          (MSGPUDLM), all other substitution data for "tagged" and
          untagged messages are constructed.  This area is labelled
          MSGSUB.  The first field (that is always constructed at
          the same time as MSGPDUID) is MSGUID, which contains the
          userid with trailing blanks removed.  It is delimited with
          X'FF'.  This the most common substitution data in messages
          issued by these modules.  This field should not be
          overlaid when issueing non-fatal messages because it may
          be required by a subsequent fatal error message.
          For fatal error messages having substitution data other
          than the userid, the substitution data should be
          constructed starting at label MSGSUB (overlaying the
          userid).  This area may be redefined in a particular
          module for various messages to be issued by the module.
          This is done in the module by placing the local definitions
          following this mapping and using an ORG MSGSUB in front
          of the definition(s) for each message.
          For non-fatal (informational) messages, MSGUID should not
          be overlaid.  In these cases, start building the
          substitution data at label MSGODATA.
          Use of the message buffer area:
           - For "tagged" asynchronous XAUTOLOG messages with no
             substitution data other than in the tag, point R1 to
             the field MSGPDUID.
           - For "tagged" asynchronous XAUTOLOG messages with
             substitution data in the basic message text, change
             the delimiter MSGPUDLM to X'00' and point R1 to the
             field MSGPDUID.
           - For untagged error messages with substitution data,
             point R1 to the field MSGSUB.
           - For informational (non-fatal) messages with substitution
             data, point R1 to the field MSGODATA.
    004C   76 Character    8 LGNPDUID       Padded userid
    0054   84 Character    1 LGNPUDLM       Userid delimiter
    0055   85 Character    1 LGNSUB (0)     Message substitution fields
    0055   85 Character    8 LGNUID         Non-padded userid for messages
    005D   93 Character    1 LGNUIDLM       Userid delimiter
    005E   94 Character    1 LGNODATA (0)   Other substitution data
          Some overlays used by different messages.
    0055   85 Character    8 LGNLUNAM       LUNAME
    005D   93 Character    1 LGNLUEND       Message substitution end
                                            delimiter
    0055   85 Character    5 LGNDVADR       Device address
    005A   90 Character    1 LGNDVEND       Message substitution end
                                            delimiter
    0055   85 Character    8 LGNSYSNM       "Other" system name
    005D   93 Character    1 LGNSYSND       Message substitution end
                                            delimiter Substitutions unique to
                                            message 1513
    0055   85 Character    4 LGN13DNA       Device name
    0059   89 Character    1 LGN13DL1       Substitution delimiter
    005A   90 Character    5 LGN13DNU       Device number
    005F   95 Character    1 LGN13END       Message substitution end
                                            delimiter
          Here are some constants used by logon.
              .... .1..      LGNLIMIT       X'04' Number of LOGON cmds before
                                            a skeleton is forced.
              .... ...1      LGNPWLMT       X'01' Number of times to prompt
                                            for a password.

LGNBK Storage Layout | Top of page

    *** LGNBK - LOGON work buffer
    *
    *     +------+------+------+------+------+------+------+------+
    *   0 |:FLAG |:FLAG2|:FLAG3|:FLAG4|:FLAG5|LGNCMD|:MLVL |:FLAG6|
    *     +------+------+------+------+------+------+------+------+
    *   8 |                       LGNACNUM                        |
    *     +---------------------------+---------------------------+
    *  10 |         LGNILEN           |         LGNIADDR          |
    *     +---------------------------+---------------------------+
    *  18 |         LGNDVMD           |         LGNCDATA          |
    *     +---------------------------+---------------------------+
    *  20 |         LGNCDATL          |         LGNCMDGS          |
    *     +---------------------------+---------------------------+
    *  28 |                       LGNKSTOR                        |
    *     +-------------------------------------------------------+
    *  30
    *
    *** LGNBK - LOGON work buffer

    *** Overlay for LGNKSTOR in LGNBK
    *
    *     +---------------------------+---------------------------+
    *  28 |         LGNKSTR0          |         LGNKSTR1          |
    *     +--------------------+------+---------------------------+
    *  30 |      LGNMACH       |:DDEF |         LGNVMDBK          |
    *     +--------------------+------+---------------------------+
    *  38 |         LGNTODON          |         LGNEFTID          |
    *     +---------------------------+---------------------------+
    *  40 |         LGNPWDIN          |         LGNPWDPP          |
    *     +------+------+-------------+---------------------------+
    *  48 |:PWLEN|:FRET |  LGNDEVNO   |                           |
    *     +------+------+-------------+                           |
    *  50 |                                                       |
    *     =                       LGNBUFF                         =
    *     |                                                +------+
    *  D0 |                                                |//////|
    *     +----------------------------------+-------------+------+
    *  D8 |             LGNLNG               |////////////////////|
    *     +---------------------------+------+--------------------+
    *  E0 |         LGNDVMDS          |         LGNFCLBK          |
    *     +---------------------------+---------------------------+
    *
    *** Overlay for LGNKSTOR in LGNBK

    *** Overlay for LGNBUFF in LGNBK
    *
    *                                 +---------------------------+
    *     ...                      4C |        LGNPDUID-          |
    *     +---------------------------+------+--------------------+
    *  50 |          -(04C)           |:PUDLM|      (055)-        |
    *     +---------------------------+------+------+-------------+
    *  58 |             -LGNUID              |:UIDLM|
    *     +----------------------------------+------+
    *
    *** Overlay for LGNBUFF in LGNBK

    *** Overlay for LGNSUB in LGNBK
    *
    *                                        +--------------------+
    *     ...                             55 |      (055)-        |
    *     +----------------------------------+------+-------------+
    *  58 |            -LGNLUNAM             |:LUEND| 5E
    *     +----------------------------------+------+
    *
    *** Overlay for LGNSUB in LGNBK

    *** Overlay for LGNSUB in LGNBK
    *
    *                                        +--------------------+
    *     ...                             55 |     LGNDVADR-      |
    *     +-------------+------+-------------+--------------------+
    *  58 |   -(055)    |:DVEND| 5B
    *     +-------------+------+
    *
    *** Overlay for LGNSUB in LGNBK

    *** Overlay for LGNSUB in LGNBK
    *
    *                                        +--------------------+
    *     ...                             55 |      (055)-        |
    *     +----------------------------------+------+-------------+
    *  58 |            -LGNSYSNM             |:SYSND| 5E
    *     +----------------------------------+------+
    *
    *** Overlay for LGNSUB in LGNBK

    *** Overlay for LGNSUB in LGNBK
    *
    *                                        +--------------------+
    *     ...                             55 |     LGN13DNA-      |
    *     +------+------+--------------------+-------------+------+
    *  58 |-(055)|:13DL1|            LGN13DNU              |:13END|
    *     +------+------+----------------------------------+------+
    *  60
    *
    *** Overlay for LGNSUB in LGNBK

LGNBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    DVMDNLG        0033 20
    DVMDNOP        0033 40
    DVMDVESA       0033 08
    DVMDVXA        0033 02
    DVMDVXC        0033 10
    DVMDV370       0033 01
    DVMDXSTR       0033 80
    DVMDYES        0033 04
    LGNACIPM       00E8
    LGNACNUM       0008
    LGNADJ         0004 04
    LGNALOGS       0002 02
    LGNAPL         0000 20
    LGNASYNC       0002 08
    LGNAUTH        0004 80
    LGNAUTO        0000 80
    LGNAUTOL       0005 00000008
    LGNAUTPR       0005 00000018
    LGNAUTSI       0005 00000014
    LGNBADPW       0004 40
    LGNBKL         00E8 0000001D
    LGNBUFF        004C
    LGNCDATA       001C
    LGNCDATL       0020
    LGNCHGPW       0004 02
    LGNCMD         0005
    LGNCMDGS       0024
    LGNDATA        0000 04
    LGNDDEF        0033
    LGNDEV         0003 40
    LGNDEVNO       004A
    LGNDFRWK       0003 80
    LGNDIRCT       0001 20
    LGNDLOCK       0002 01
    LGNDVADR       0055
    LGNDVEND       005A
    LGNDVMD        0018
    LGNDVMDS       00E0
    LGNEFTID       003C
    LGNE361        0007 20
    LGNE54         0007 80
    LGNE5413       0007 40
    LGNFCLBK       00E4
    LGNFLAG        0000
    LGNFLAG2       0001
    LGNFLAG3       0002
    LGNFLAG4       0003
    LGNFLAG5       0004
    LGNFLAG6       0007
    LGNFLBK        0002 10
    LGNFLGS        0000
    LGNFRET        0049
    LGNHERE        0001 10
    LGNIADDR       0014
    LGNILEN        0010
    LGNIPL         0000 02
    LGNKSTOR       0028
    LGNKSTR0       0028
    LGNKSTR1       002C
    LGNLDEV        0003 20
    LGNLIMIT       005F 04
    LGNLNG         00D8
    LGNLOGBY       0004 08
    LGNLOGON       0005 00000004
    LGNLOGOP       0005 0000001C
    LGNLUEND       005D
    LGNLUNAM       0055
    LGNMACH        0030
    LGNMACHZ       0004 01
    LGNMASK        0001 04
    LGNMAXU        0002 20
    LGNMCH         0001 01
    LGNMLVL        0006
    LGNNAUDT       0003 02
    LGNNOCMD       0003 04
    LGNNOFAT       0002 80
    LGNNOIPL       0000 40
    LGNNOPAS       0003 01
    LGNNOPMT       0004 10
    LGNNORUN       0000 01
    LGNODATA       005E
    LGNPASS        0001 80
    LGNPDUID       004C
    LGNPRMPT       0004 20
    LGNPROMT       0001 40
    LGNPUDLM       0054
    LGNPWDIN       0040
    LGNPWDPM       0040
    LGNPWDPP       0044
    LGNPWLEN       0048
    LGNPWLMT       005F 01
    LGNQUIET       0000 08
    LGNRECON       0002 40
    LGNSECLB       0001 02
    LGNSUB         0055
    LGNSYNCH       0001 08
    LGNSYSND       005D
    LGNSYSNM       0055
    LGNTEXT        0000 10
    LGNTODON       0038
    LGNUID         0055
    LGNUIDLM       005D
    LGNVMDBK       0034
    LGNXAUT        0005 0000000C
    LGNXAUTG       0005 00000010
    LGN13DL1       0059
    LGN13DNA       0055
    LGN13DNU       005A
    LGN13END       005F
    VMDMCNFG       0006 01
    VMDMCODE       0006 20
    VMDMIMSG       0006 04
    VMDMSGON       0006 80
    VMDMTEXT       0006 10
    VMDSPMSG       0006 08
    VMDWNGON       0006 40

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:29:05 EDT.
Copyright IBM Corporation, 1990, 2020