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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. |
IUCVB
Cross Reference (Contains links to field and bit definitions)
IUCVB Prolog
NAME : HCPIUCVB
DESCRIPTION: IUCV CONTROL BLOCK
DSECT : IUCVB
FUNCTION : THIS CONTROL BLOCK DEFINES THE INTER-USER COMMUNICATIONS
VEHICLE CONTROL BLOCK FOR AN IUCV USER.
LOCATED BY : -VMDIUCV FIELD OF HCPVMDBK FOR VIRTUAL MACHINES
-CALL TO HCPIUGAI FOR CP SYSTEM SERVICES
CREATED BY : IUCV DECLARE BUFFER FUNCTION - HCPIUJDB
DELETED BY : IUCV RETRIEVE BUFFER FUNCTION - HCPIUERB
NOTES : The following fields are valid in the base IUCVB only (all
other fields are valid in the base and local IUCVBs):
IUCVCCT - Pointer to user's CCTBK
IUCVBWIN - Dispatch window event count
IUCMXCN - Maximum number of connections
IUCPNDHD - Pending control interrupt queue head
IUCPNDTL - Pending control interrupt queue tail
IUCVSTAT - IUCV status
IUCANYFL - *IDENT authorization particulars
IUCTOTCN - Total number of connections
IUCVBCPX - CPEBK for HCPIVKRS call
IUCBUFCT - Buffer counts
IUCVB Control Block Content
IUCVB DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure IUCVB IUCV CONTROL BLOCK 0000 0 Address 4 IUCVMB ADDRESS OF VMDBK 0004 4 Address 4 IUCBFAD1 ADDRESS OF EXTERNAL BUFFER 0008 8 Address 4 IUCBFAD2 2ND PAGE OF EXTERNAL BUFFER 000C 12 Signed 2 IUCBFLN1 LENGTH OF BUFF IN 1ST PAGE - 1 000E 14 Signed 2 IUCBFLN2 LENGTH OF BUFF IN 2ND PAGE - 1 0010 16 Address 4 IUCCBFA1 ADDRESS OF EXTERNAL CNTL BUFFER 0014 20 Address 4 IUCCBFA2 2ND PAGE OF EXTERNAL CNTL BUFFER 0018 24 Signed 2 IUCCBFL1 LENGTH OF CNTL BUFF IN 1ST PAGE 001A 26 Signed 2 IUCCBFL2 LENGTH OF CNTL BUFF IN 2ND PAGE 001C 28 Address 4 IUCVCCT POINTER TO THE USER'S CCT 0020 32 Bitstring 1 IUCVBWIN Dispatch window event count 1... .... IUCVBMAX X'80' Event threshhold value .1.. .... IUCVBFRE X'40' Free storage threshhold count 0021 33 Bitstring 1 * RESERVED NOTES : The event threshhold for IUCVBWIN is actually x'100'. For performance reasons IUCVBMAX has been defined as an equate so that a TM cam be used to test for the threshhold. 0022 34 Signed 2 IUCMXCN MAX NUM OF CONN FROM DIRECTORY OR DEFAULT 0024 36 Signed 4 IUCPNDHD PENDING CONTROL INT QUEUE HEAD 0028 40 Signed 4 IUCPNDTL PENDING CONTROL INT QUEUE TAIL 002C 44 Bitstring 1 IUCVSTAT IUCV STATUS 1... .... IUCVWAIT X'80' IUCV WAIT .1.. .... IUCIDENT X'40' CONNECT TO *IDENT AUTHORIZED ..1. .... IUCCPBUF X'20' CP CREATED IUCVB ...1 .... IUCBROUT X'10' VIRTUAL MACHINE IS BREAKING OUT .... 1... IUCBUFA X'08' Application buffer exists in complex .... .1.. IUCBUFC X'04' Control buffer exists in complex 002D 45 Bitstring 1 IUCANYFL *IDENT AUTHORIZATION PARTICULARS 1... .... IUCANYLI X'80' RESANY LOCAL IDENTIFY .1.. .... IUCANYLR X'40' RESANY LOCAL REVOKE ..1. .... IUCANYGI X'20' RESANY GLOBAL IDENTIFY ...1 .... IUCANYGR X'10' RESANY GLOBAL REVOKE .... 1... IUCANYWI X'08' GATEANY IDENTIFY .... .1.. IUCANYWR X'04' GATEANY REVOKE .... ..1. IUCANYRE X'02' RESANY AUTHORITY CHECKED .... ...1 IUCANYGT X'01' GATEANY AUTHORITY CHECKED 002E 46 Signed 2 IUCTOTCN TOTAL NUMBER OF CONNECTIONS 0030 48 Address 4 IUCIBFA1 FIRST PAGE-INTERRUPT BUFFER EXT 0034 52 Address 4 IUCIBFA2 SECOND PAGE-INTERRUPT BUFFER EXT 0038 56 Signed 2 IUCIBFL1 INTERRUPT BUFFER EXT LEN - PG 1 003A 58 Signed 2 IUCIBFL2 INTERRUPT BUFFER EXT LEN - PG 2 003C 60 Signed 4 IUCVBCPX CPEBK for HCPIVKRS call 0040 64 Bitstring 1 IUCAPIN IUCV interrupts enabled 1... .... IUCSNDN X'80' IUCV Non-priority msgs enabled .1.. .... IUCSNDP X'40' IUCV priority messages enabled ..1. .... IUCRPYN X'20' IUCV non-priority reply enabled ...1 .... IUCRPYP X'10' IUCV priority replies enabled .... 1... IUCICTRL X'08' IUCV control interrupts enabled 0041 65 Bitstring 1 IUCTLIN IUCV control interrupts enabled 1... .... IUCCLPC X'80' Pending connections enabled .1.. .... IUCCLCC X'40' Complete connections enabled ..1. .... IUCCLPS X'20' Sever interrupts enabled ...1 .... IUCCLPQ X'10' Quiesce interrupts enabled .... 1... IUCCLPR X'08' Resume interrupts enabled 0042 66 Signed 2 * Reserved IUCBUFCT contains both buffer counts. This enables the code to test if both of these fields are zero at the same time. IUCAPBCT and IUCTLBCT must be kept together. 0044 68 Signed 4 IUCBUFCT (0) Buffer counts 0044 68 Signed 2 IUCAPBCT Count of the number of application buffers declared in the complex 0046 70 Signed 2 IUCTLBCT Count of the number of control buffers declared in the complex Constant values used throughout IUCV 00004000 IUCINTC X'4000' IUCV Interrupt code 0000001E IUCR0MSK 30 IUCV CR0 mask bit 00000009 IUCSIZE (*-IUCVB+7)/8 IUCVB SIZE IN DOUBLEWORDS
IUCVB Storage Layout
*** IUCVB - IUCV CONTROL BLOCK * * +---------------------------+---------------------------+ * 0 | IUCVMB | IUCBFAD1 | * +---------------------------+-------------+-------------+ * 8 | IUCBFAD2 | IUCBFLN1 | IUCBFLN2 | * +---------------------------+-------------+-------------+ * 10 | IUCCBFA1 | IUCCBFA2 | * +-------------+-------------+---------------------------+ * 18 | IUCCBFL1 | IUCCBFL2 | IUCVCCT | * +------+------+-------------+---------------------------+ * 20 |:VBWIN|//////| IUCMXCN | IUCPNDHD | * +------+------+-------------+------+------+-------------+ * 28 | IUCPNDTL |:VSTAT|:ANYFL| IUCTOTCN | * +---------------------------+------+------+-------------+ * 30 | IUCIBFA1 | IUCIBFA2 | * +-------------+-------------+---------------------------+ * 38 | IUCIBFL1 | IUCIBFL2 | IUCVBCPX | * +------+------+-------------+-------------+-------------+ * 40 |:APIN |:TLIN |/////////////| IUCAPBCT | IUCTLBCT | * +------+------+-------------+-------------+-------------+ * 48 * *** IUCVB - IUCV CONTROL BLOCK
IUCVB Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----IUCANYFL 002D
IUCANYGI 002D 20
IUCANYGR 002D 10
IUCANYGT 002D 01
IUCANYLI 002D 80
IUCANYLR 002D 40
IUCANYRE 002D 02
IUCANYWI 002D 08
IUCANYWR 002D 04
IUCAPBCT 0044
IUCAPIN 0040
IUCBFAD1 0004
IUCBFAD2 0008
IUCBFLN1 000C
IUCBFLN2 000E
IUCBROUT 002C 10
IUCBUFA 002C 08
IUCBUFC 002C 04
IUCBUFCT 0044
IUCCBFA1 0010
IUCCBFA2 0014
IUCCBFL1 0018
IUCCBFL2 001A
IUCCLCC 0041 40
IUCCLPC 0041 80
IUCCLPQ 0041 10
IUCCLPR 0041 08
IUCCLPS 0041 20
IUCCPBUF 002C 20
IUCIBFA1 0030
IUCIBFA2 0034
IUCIBFL1 0038
IUCIBFL2 003A
IUCICTRL 0040 08
IUCIDENT 002C 40
IUCINTC 0046 00004000
IUCMXCN 0022
IUCPNDHD 0024
IUCPNDTL 0028
IUCRPYN 0040 20
IUCRPYP 0040 10
IUCR0MSK 0046 0000001E
IUCSIZE 0046 00000009
IUCSNDN 0040 80
IUCSNDP 0040 40
IUCTLBCT 0046
IUCTLIN 0041
IUCTOTCN 002E
IUCVBCPX 003C
IUCVBFRE 0020 40
IUCVBMAX 0020 80
IUCVBWIN 0020
IUCVCCT 001C
IUCVMB 0000
IUCVSTAT 002C
IUCVWAIT 002C 80
Last updated on 3 Aug 1999 at 12:07:17 EDT.
Copyright IBM Corporation, 1990, 1999