BPXYMSGX — Map the message header
BPXYMSGX
is used by the srx_np() syscall. BPXYMSGX uses constants defined
by mapping macro IVTBUFL.
IVTBUFL ,
IVTBUFL DSECT BUFFER DESCRIPTOR
BUFL_VERSION DS X VERSION OF BUFFER DESCRIPTOR
BUFL_VERSIONC EQU X'00' VERSION 0
BUFL_SOURCE DS X BUFFER SOURCE
BUFL_CECSA EQU X'80' INDICATES THAT THE STORAGE
* IS IN CSM ECSA
BUFL_CDSPACE EQU X'40' INDICATES THAT THE STORAGE
* IS IN CSM DATA SPACE
BUFL_UDSPACE EQU X'20' INDICATES THAT THE STORAGE
* IS IN A USER DATA SPACE
BUFL_USTOR EQU X'10' INDICATES THAT THE STORAGE
* IS A USER'S STORAGE OTHER THAN
* A DATA SPACE
BUFL_HVCOMM EQU X'08' Indicates that the storage
is in a HVCOMM
*
BUFL_TYPE DS X BUFFER TYPE
BUFL_FIXED EQU X'80' INDICATES THAT THE STORAGE IS
* IN A GUARANTEED TO BE FIXED
* STATE
BUFL_PAGEABLE EQU X'40' INDICATES THAT THE STORAGE IS
* IN A GUARANTEED TO BE PAGEABLE
* STATE
BUFL_PAGEELIG EQU X'20' INDICATES THAT THE STORAGE IS
* ELIGIBLE TO BE PAGEFREED BY
* CSM
DS XL1 RESERVED
BUFL_TOKEN DS XL12 CSM BUFFER TOKEN
BUFL_ALET DS F DATA SPACE ALET
BUFL_ADDR64 DS AD 64-bit buffer address
BUFL_ADDR DS A POINTER TO BUFFER
BUFL_SIZE DS F THE SIZE OF THE ALLOCATED BUFFER
* ON GET_BUFFER REQUESTS, THE DATA
* LENGTH ON COPY_DATA REQUESTS
BUFL_END DS 0F END OF IVTBUFL
BPXYMSGX ,
** BPXYMSGX: MSGX system call structure
** Used By: BPX1SRX
MSGX DSECT ,
*
MSGXNAMEPTR DS A /* PTR TO SOCKADDR BUFFER */
MSGXNAMELEN DS F /* LENGTH OF SOCKADDR BUFFER */
MSGXFLAGS DS 0BL4 /* SRX CONTROL FLAGS */
MSGXFLAGS1 DS BL1
MSGXFLAGS2 DS BL1
MSGXFLAGS3 DS BL1
MSGXFLAGS4 DS BL1 FLAGS ARE IN THE 4TH BYTE
MSGX_CECSA EQU X'02' /* RECV IN ECSA BUFFERS */
MSGX_CDSPACE EQU X'01' /* RECV IN DATA SPACE BUFFERS */
MSGXMSGFLAGS DS BL4 /* MSG_* FLAGS, SEE BPXYMSGF */
MSGXDATALEN DS F /* MAX/MIN DATA TO RECEIVE */
MSGXTCB DS A /* TCB TO OWN RECEIVE BUFFERS */
MSGXERRIOVX DS F /* SEND IOVX ELEMENT IN ERROR */
MSGXERRDATA DS F /* AMOUNT SENT FROM LAST BUFFER */
MSGXIVTBUFLOFFSET DS F /*1ST BUFF APPL STILL OWNS
DS CL4 RESERVED
MSGXCONTROLPTR DS A Ancillary Data buffer
MSGXCONTROLLEN DS F Length of ancillary data
MSGXIOVX DS CL(BUFL_END-IVTBUFL) IVTBUFL FOR IOVX ARRAY
MSGXEND EQU *
*
MSGX#LEN EQU MSGXEND-MSGX
*
* IOVX - ARRAY OF IVTBUFL BUFFER DESCRIPTIONS
*
IOVX DSECT , /* DESCRIBED BY MSGXIOVX */
IOVXBUFL DS 0CL(BUFL_END-IVTBUFL) ARRAY ELEMENT
*
* Constants
* /* BPX1SRX DIRECTION PARAMETER: */
MSGX_SEND EQU 0 /* SEND OPERATION */
MSGX_RECV EQU 1 /* RECEIVE OPERATION */
*
** BPXYMSGX End