hang on exit bug under Linux

[Nicolas Williams]

On Wed, Dec 12, 2001 at 09:18:05AM +1100, Damien Miller wrote:
> On Tue, 11 Dec 2001, Dan Astoorian wrote:
> 
> > On Mon, 10 Dec 2001 23:20:14 EST, Nicolas Williams writes:
> > > 
> > > I say: with ptys, send SIGHUP when the main process exits and/or when
> > > the client closes the session.
> > 
> > Would setting the HUPCL termios cflag for the pty a) work, b) be
> > portable, and c) be more appropriate than killpg()?
> 
> What about sessions without a pty?

They should always "hang", or, rather, "hang around."

In any case, I no longer think that sshd should do killpg(HUP) when the
session leader exits, nor, for that matter, should it set the HUPCL
termios cflag for the pty.

Instead I think the client should have an option to, when the sshd
tells it the session exited, close the related channels and/or pass a
SIGHUP to the session which the sshd would then send to the process
group of the session leader.

> -d
> 


Cheers,

Nico
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