#631 Linux acting as firewire disc?

[Anonymous]

In PowerBook I've thing called 'firewire disc mode' -
when I press 'S' on keyboard, laptop is acting as FW disk
and I can use it's internal disk from another computer.
But I was wondering if Linux could act as a FireWire disk
- e.g. small kernel with initrd with needed stuff. It is
possibile? If not, would be ever?