forkoff()

[Nicolas Williams]

On Mon, Feb 04, 2002 at 10:09:42PM +0100, Markus Friedl wrote:
> i'm not sure this works like expected.

In the context of the -f -f patch it works fine.

Just for kicks I added a ~d escape to call forkoff(1, 1) and indeed, it
DOESN'T WORK as expected. The problem is that SSH2_MSG_CHANNEL_CLOSE is
never sent to close the session, so the session continues to exist and
the remote shell continues to run (idle) while the client sits there in
the background doing nothing. Adding a call to chan_send_oclose2()
would fix that (*) - so does passing SIGHUP :)

(*) Should be safe - I don't see how that could lead to the CLOSE
    message being sent twice. Since the idea is to force a channel
    closed any buffered data should be dropped and the channel
    [io]states set to closed, thus preventing additional close msgs from
    being sent; no EOF msg will be sent thus, but who cares, the CLOSE
    msg suffices.

Nico
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