*BSD News Article 63637


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Sharing the modem between incoming users, ppp, uucp, and hylafax
Date: 15 Mar 1996 22:13:29 GMT
Organization: Private BSD site, Dresden
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References: <Do875K.Jt6.0.raindrop.seaslug.org@raindrop.seaslug.org>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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unger@raindrop.seaslug.org (Thomas Unger) writes:

>   One of the last puzzles for me was what serial
> port name (ttyd0 or cuaa0) to use?

We don't use different ports for hardware flow control etc.  The
general meaning is:

	ttyd*	--	dialin devices

			open() will complete as soon as carrier arrives,
			and the port will assigned to the process that
			holds the device open

	cua*	--	"calling unit" dialout devices; initial open()
			will succeed immediately without the presence
			of a carrier, and this will block any partial
			open() of the according dialin device until the
			calling unit has been closed again

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)