Casey Rodarmor <ca...@rodarmor.com> once said:
> > Let's say I have a process A which forks a child process B with the
> > RFNAMEG so it receives a copy of A's namespace.
> >
> > If process A then makes a change to its namespace, will process B see
> > that change? Or does B receive a distinct copy that A then can't
> > change?
The latter. B won't observe any namespace changes made by A.
> Also, whatever the answer is, how can I test this for myself? I was
> struggling to come up with a combination of commands, short of writing
> some C programs, which would let me have two interactive rc shells
> that inherit from one another, since rc doesn't have job control and
> new rio windows are in a new process group.
In one rio window, do the following:
% mkdir -p /tmp/wsys
% mount $wsys /tmp/wsys 'new -r 0 0 512 512 -pid '$pid
% { rc -i <>/tmp/wsys/cons >[1=0] >[2=0] } &
Any further changes to the namespace will be reflected in both windows.
Cheers,
Anthony
