Re: [PATCH 2/4] fanotify: Add pids to events

From: Andreas Gruenbacher
Date: Sat Jan 16 2010 - 17:54:08 EST

On Friday 15 January 2010 10:21:46 pm Matt Helsley wrote:
> On Fri, Jan 15, 2010 at 04:12:09PM +0100, Andreas Gruenbacher wrote:
> > > 2. If the event recipient does a clone and enters a new pidns the pid
> > > number will be incorrect without any indication.
> >
> > No, if a process has a pid within the listener's namespace the listener
> > will see this pid; otherwise, the resulting pid value is 0.
> So the pid reference is resolved at read(), correct? If so then that's
> fine. (Otherwise I'd think the values could still become stale).

Yes. Note that for non-blocking events, there is no guarantee that the
triggering process still runs when the event is consumed though.

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