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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
 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.