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Kernel Functions for Driversnulldev(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



SunOS 5.9Go To TopLast Changed 11 Apr 1991


Updated: 2004-01-16, 19:57