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Message-ID:	<3FF21938.CD06BE73@dessent.net>
Date:	Tue, 30 Dec 2003 16:32:56 -0800
From:	Brian Dessent <brian AT dessent DOT net>
Organization:	My own little world...
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To:	cygwin AT cygwin DOT com
Subject:	Re: problem comport, iocl and FIONREAD
References:	<BAY9-F13Qv8rcyNe3Eb00008b23 AT hotmail DOT com>
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Arash Partow wrote:
> 
> Hi all,
> 
> I'm seeing a problem with ioctl and FIONREAD, I use the
> following code to check if there are any bytes in the
> input buffer of a comport.
> ie:

Check the return value of ioctl(), I bet it's returning error and
setting EINVAL.  I think you want TIOCINQ instead.  At least,
fhandler_serial.cc recognises such an ioctl, but not FIONREAD.

Brian

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