Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!newstop!west!texsun!moxie!sugar!ficc!peter From: peter@ficc.ferranti.com (Peter da Silva) Newsgroups: comp.unix.sysv386 Subject: Re: Missing SysV tty device driver feature?? Message-ID: Date: 28 Jan 91 21:20:58 GMT References: <82177@unix.cis.pitt.edu> <1991Jan23.034042.3368@NCoast.ORG> Reply-To: peter@ficc.ferranti.com (Peter da Silva) Organization: Xenix Support, FICC Lines: 13 In article gemini@geminix.in-berlin.de (Uwe Doering) writes: > In most SysV tty drivers the assertion of DTR doesn't depend on the CLOCAL > flag. It is always raised if at least one process has opened the device, > and is dropped if the last process closes the device. It is also dropped if CLOCAL is clear and the speed is set to B0. Which is lucky, because of the difficulty of re-opening ones control terminal while process group leader... you don't have a control terminal any more and you can't get one because setpgrp fails if you're already process group leader. Gritch. -- Peter da Silva. `-_-' peter@ferranti.com +1 713 274 5180. 'U` "Have you hugged your wolf today?"