Re: programming with pty(4)

[christos%astron.com@localhost (Christos Zoulas)]

In article <20120531120352.4c293fba%viola.nmsu.edu@localhost>,
Brook Milligan  <brook%nmsu.edu@localhost> 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