Re: [uml-user] Accessing Host Serial Ports

[Nick Craig-W. <nc...@ax...>]

On Thu, Jul 31, 2003 at 09:33:22PM -0400, William R. Lorenz wrote:
> I want to access from a UML machine a modem on the host's ttyS0 or
> ttyS1 (would this effect hardware addressing) serial port.  I've
> tried many things to no avail -- can someone please offer some
> assistance? :)

In theory you can add something like

  con0=tty:/dev/ttyS0

However (if you search the archives) there have been reports that this
doesn't work properly.

You could try this also

  con0=tty:/dev/ttys0

ttys0 is a pseudotty, its other end is at ptys0.  You can then use the
most excellent socat to connect it to ttyS0, eg

  socat /dev/ttys0 /dev/ttyS0

You could also set uml up using its tcp serial connections and use
socat to forward them...

  linux .... con0=port:9000
  socat /dev/ttyS0 TCP4:localhost:9000

I haven't actually tried any of these things so YMMV ;-)

See

  http://user-mode-linux.sourceforge.net/input.html

For more info
-- 
Nick Craig-Wood
nc...@ax...