nulldev man page on SmartOS

nulldev man page on SmartOS

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NULLDEV(9F)							   NULLDEV(9F)

NAME
       nulldev - zero return function

SYNOPSIS
       #include <sys/conf.h>
       #include <sys/ddi.h>

       int nulldev();

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

DESCRIPTION
       nulldev()  returns  0. It is intended to be used in the cb_ops(9S) data
       structure of a device driver for device entry points that do nothing.

RETURN VALUES
       nulldev() returns a 0.

CONTEXT
       nulldev() can be called from any context.

SEE ALSO
       nodev(9F), cb_ops(9S)

       Writing Device Drivers

				 Apr 11, 1991			   NULLDEV(9F)

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