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Message-ID:	<01C052D9.82FD67C0.kern@sibbald.com>
From:	Kern Sibbald <kern AT sibbald DOT com>
Reply-To:	"kern AT sibbald DOT com" <kern AT sibbald DOT com>
To:	"'cygwin AT cygwin DOT com'" <cygwin AT cygwin DOT com>
Subject:	ioctl() support
Date:	Mon, 20 Nov 2000 10:06:11 +0100
X-Mailer:	Microsoft Internet E-mail/MAPI - 8.0.0.4211
Encoding:	28 TEXT

Hello,

I'm running CYGWIN 1.1.2 (my Xlib didn't work with 1.1.4; will
soon try 1.1.5), and am very happy with it. I have built a
version of apcupsd (UPS daemon) that works great on Win32
except for "dumb" UPSes which require serial line control
with ioctl() TIOCMBIS, TIOCMBIC, and TIOCMGET.  My ioctl()
calls always return with "Invalid argument".  

In a quick look at the CYGWIN source, it appears that you do
not support TIOCMBIS, TIOCMBIC, and TIOCMGET.
Is this true or am I missing something?

If you do not support them, do you have any plans to support
them?

Assuming that you do not support them, is there any way after
I do an open() on the serial port that I can get the Windows
serial port handle so that I can interface directly to the
port with GetCommModemStatus() and EscapeCommFunction()
without having to rewrite all the open()/close() code 
that you have already so nicely done?

Thanks for the great product.

Best regards,

Kern


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