INT 21 - Novell NetWare v3+ - GET CONNECTION'S OPEN FILES
        AX = F217h subfn EBh
        CX = length of request buffer in bytes
        DX = length of reply buffer in bytes
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
        reply buffer filled

Format of request buffer:
Offset  Size    Description
 00h    WORD    0005h (length of following data)
 02h    BYTE    EBh (subfunction "Get Connection's Open Files")
 03h    WORD    target connection number
 05h    WORD    last record seen (set to 0000h for first call)
Note:   connection numbers greater than the maximum supported by the server
          can cause ABENDs

Format of reply buffer:
Offset  Size    Description
 00h    WORD    next request record
 02h    WORD    number of records returned (max 28)
 04h 29N BYTEs  records
                Offset  Size    Description
                 00h    WORD    task number
                 02h    BYTE    lock type
                 03h    BYTE    access control
                 04h    BYTE    lock flag
                 05h    BYTE    volume number
                 06h    DWORD   parent directory entry number
                 0Ah    DWORD   directory entry number
                 0Eh    BYTE    reserved
                 0Fh    BYTE    data stream type
                 10h    BYTE    file name length
                 11h 12 BYTEs   file name

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