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List:       netbsd-users
Subject:    Re: programming with pty(4)
From:       christos () astron ! com (Christos Zoulas)
Date:       2012-05-31 21:45:47
Message-ID: jq8oqa$3lg$1 () dough ! gmane ! org
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In article <20120531120352.4c293fba@viola.nmsu.edu>,
Brook Milligan  <brook@nmsu.edu> wrote:
>I have a program that opens a pty(4) on a NetBSD box and reads/writes on
>the master side.  I can connect to the slave side with tip(1) and
>communicate perfectly with the master side of the pty(4).  However, if
>I disconnect tip(1) with ~^D and try to reconnect, tip(1) reports a
>'Device busy' error.  Presumably, I need to detect the fact that tip(1)
>disconnected and do something to the pty(4) device in order to allow a
>later connection, but I'm not sure (i) how to detect the disconnection
>and (ii) what to do when it happens.
>
>Any help with programming pty(4) devices is greatly appreciated.

Are you using BSD pty's or PTYFS?

christos

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