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       DLopen(3dlpi)                                          DLopen(3dlpi)


       NAME
             DLopen - initialize SAP state

       SYNOPSIS
             DLopen(
                queue_t *q, dev_t *dev, int flag, sflag, struct cred *credp)

          Parameters
            q           pointer to the read queue

            dev         pointer to the major/minor device number

            flag        file flags

            sflag       Stream open flags

            credp       pointer to a credentials structure

       DESCRIPTION
             This routine initializes the SAP state if the Stream has not
             been opened before.  It allocates a minor number if the Stream
             has been opened with the cloneopen feature.  Initialization of
             SAP state is performed at STREAMS spl.  DLopen() checks the
             BOARD_PRESENT flag in the board configuration structure (set
             in the Hardware Dependent Layer during initialization) to
             return a board not installed error.

          Response
            error code  ENXIO, ECHRNG, 0 (no errors)

          Layer
             Hardware Independent.

       REFERENCES
          Hardware Independent Layer Functions Called
            none

          Hardware Dependent Layer Functions Called
            none









                           Copyright 1994 Novell, Inc.               Page 1