> That seems a good idea, but is that possible? Any idea about how?

The "how" this should be communicated to userland, and what should happen
there, is the core of the tech-kern discussion referenced in this thread
already.

IMHO it should be special cased and send SIGPWR to init, which then would
run a special script (like /etc/powerdown) if it exists, otherwise ignore
the signal.


Martin