why fd passing?

[Markus Friedl]

On Wed, Jun 26, 2002 at 11:46:24AM -0500, Phil Howard wrote:
> Why not go ahead and have the monitor set one up before it forks
> the child?

with protocol 2 multiple pty and multiple login
shells over one connection are allowed.
the ssh.com windows clients supports this for
example.

> I do not see from this illustration how mmap() is involved.

it's used for passing the internal zlib compression
state around.

-m