nochpoll(9F) Kernel Functions for Drivers nochpoll(9F)NAMEnochpoll - 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
The nochpoll() function 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
The nochpoll() function returns ENXIO.
CONTEXT
The nochpoll() function can be called from user, interrupt, or kernel
context.
SEE ALSOpoll(2), chpoll(9E), cb_ops(9S)
Writing Device Drivers
SunOS 5.10 16 Jan 2006 nochpoll(9F)