INT 21 - Novell NetWare v3+ - GET OBJECT DISK RESTRICTIONS
        AX = F216h subfn 29h
        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
Note:   this function returns successfully, showing no restriction, if an
          invalid object ID is specified
SeeAlso: AX=F216h/SF=24h

Format of request buffer:
Offset  Size    Description
 00h    WORD    0006h (length of following data)
 02h    BYTE    21h (subfunction "Get Object Disk Restrictions")
 03h    BYTE    volume number
 04h    DWORD   (big-endian) object ID

Format of reply buffer:
Offset  Size    Description
 00h    DWORD   disk space limit
 04h    DWORD   disk space currently in use by object

.