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X-HELO:	calimero.vinschen.de
Date:	Mon, 18 Aug 2014 13:21:17 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Cc:	Ross Ridge <rridge AT csclub DOT uwaterloo DOT ca>
Subject:	Re: Bash uses lseek while reading from serial device
Message-ID:	<20140818112117.GB2280@calimero.vinschen.de>
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Mail-Followup-To:	cygwin AT cygwin DOT com, Ross Ridge <rridge AT csclub DOT uwaterloo DOT ca>
References:	<20140816184739 DOT 3078D27C7E AT mail DOT csclub DOT uwaterloo DOT ca> <53F12A72 DOT 2090805 AT tlinx DOT org>
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On Aug 17 15:19, Linda Walsh wrote:
> Being a bit of a busybody...
>=20
> I forwarded this to the bash list and chet responded there...
>=20
> so forwarding it back here... not sure what isatty is supposed to do
> with a serial line, let alone one on windows...

On Linux isatty on a descriptor connected to serial line returns 0,
on Cygwin it returned 1 so far.  I fixed both problems here, isatty
on a serial line returns 0 now, and lseek on serial (and, FWIW,
sockets) don't simply return 0 anymore, but rather -1 with errno set
to ESPIPE, as on Linux.

These patches are available in the latest snapshot I just uploaded
to https://cygwin.com/snapshots/

Ross, please give it a try.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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