Date: Wed, 19 May 2004 13:53:38 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: ticso@cicely.de, ticso@cicely12.cicely.de Cc: net@freebsd.org Subject: Re: cuaa0&ttyd0's bug? Message-ID: <20040519.135338.08457763.imp@bsdimp.com> In-Reply-To: <20040519170105.GZ70900@cicely12.cicely.de> References: <40AA0A30.3020102@gddsn.org.cn> <20040519170105.GZ70900@cicely12.cicely.de>
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In message: <20040519170105.GZ70900@cicely12.cicely.de>
Bernd Walter <ticso@cicely12.cicely.de> writes:
: On Tue, May 18, 2004 at 09:05:52PM +0800, wsk wrote:
: > hi,folks:
: > It seems that the ttyd0 isn't the dialin line to login , and
: > the cuaa0 like is both the dialin/out device!under 4.9 above
: > and 5.X .but the ttyd0 work well under 4.8.
: > here is my test:
: > I wanna direct connected two bsd box via a null-modem cable,on
: > a box ,I congfiured the ttys as follow:
: > # The 'dialup' keyword identifies dialin lines to login, fingerd etc.
: > ttyd0 "/usr/libexec/getty std.9600" dialup on secure
: > ttyd1 "/usr/libexec/getty std.9600" dialup off secure
: > and kill -HUP 1
: > on the other box , I use cu connenct the box:
: > cu -l /dev/cuaa0
: > connected
: > and then , nothing more i could recv!
: > but if I confirgure the ttys as below:
: > # The 'dialup' keyword identifies dialin lines to login, fingerd etc.
: > cuaa0 "/usr/libexec/getty std.9600" dialup on secure
: > ttyd1 "/usr/libexec/getty std.9600" dialup off secure
: > and do it like before i do , it worked!
: > why???? It's a bug???
:
: The behavour is intentional.
: Your cable doesn't supply DCD signal.
: Either use a cable with DCD suport or stay with cuaa.
: It's OK to use cuaa if you don't need dialout support.
or turn off modem flow control in the lock device...
Warner
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