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Kernel Functions for Drivers | nochpoll(9F) |
| nochpoll - error return function for non-pollable devices |
SYNOPSIS
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#include <sys/ddi.h>
#include <sys/sunddi.h>
int nochpoll(dev_t dev, short events, int anyyet, short *reventsp, struct pollhead **pollhdrp); |
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Solaris DDI specific (Solaris DDI).
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dev
- Device number.
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events
- Event flags.
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anyyet
- Check current events only.
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reventsp
- Event flag pointer.
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pollhdrp
- Poll head pointer.
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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.
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nochpoll() returns ENXIO.
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nochpoll() can be called from user or interrupt context.
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