> > 	Add check for your own tty being group writable, unless you're
 > > 	root (in which case issuing a warning might be useful.) Using
 > > 	stderr to get the tty is probably advisable, and if there
 > > 	doesn't seem to be a tty it's probably better to let the wall
 > > 	go through...
 > 
 > What do other sytems do in this case?

Solaris and Linux are the same; then again, it's all the same code
base, so that's hardly surprising.

-- 
   - David A. Holland             |    VINO project home page:
     dholland@eecs.harvard.edu    | http://www.eecs.harvard.edu/vino