php man page for nochpoll

nochpoll(9F)						   Kernel Functions for Drivers 					      nochpoll(9F)

NAME
       nochpoll - error return function for non-pollable devices

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

       int nochpoll(dev_t dev, short events, int anyyet, short *reventsp, struct pollhead **pollhdrp);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI).

PARAMETERS
       dev	       Device number.

       events	       Event flags.

       anyyet	       Check current events only.

       reventsp        Event flag pointer.

       pollhdrp        Poll head pointer.

DESCRIPTION
       nochpoll()  is a routine that simply returns the value  ENXIO. It is intended to be used in the cb_ops(9S) structure of a device driver for
       devices that do not support the poll(2) system call.

RETURN VALUES
       nochpoll() returns  ENXIO.

CONTEXT
       nochpoll() can be called from user or interrupt context.

SEE ALSO
       poll(2), chpoll(9E), cb_ops(9S)

       Writing Device Drivers

SunOS 5.10							    11 Oct 1995 						      nochpoll(9F)