clone(7)                                                           clone(7)

NAME
     clone - open any major/minor device pair on a STREAMS driver

DESCRIPTION
     clone is a STREAMS software driver that finds and opens an unused
     major/minor device on another STREAMS driver. The major device number
     passed to clone during open corresponds to the clone driver and the
     minor device number corresponds to the target driver. Each open
     results in a separate stream to a previously unused major/minor
     device.

     The clone driver consists solely of an open function. This open func-
     tion performs all of the necessary work so that subsequent system
     calls [including close(2)] require no further involvement of clone.

     clone will generate an ENXIO error, without opening the device, if the
     major/minor device number provided does not correspond to a valid
     major/minor device, or if the driver indicated is not a STREAMS
     driver.

NOTES
     Multiple opens of the same major/minor device cannot be done through
     the clone interface. Executing stat(2) on the file system node for a
     cloned device yields a different result from executing fstat(2) using
     a file descriptor obtained from opening the node.

SEE ALSO
     log(7).

     Programmer's Guide: STREAMS

























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