Re: epoll and shared fd's

[Davide Libenzi <davidel@xmailserver.org>]

On Thu, 28 Feb 2008, Bodo Eggert wrote:

> On Thu, 28 Feb 2008, Michael Kerrisk wrote:
> 
> > On Tue, Feb 26, 2008 at 7:16 PM, Bodo Eggert <7eggert@gmx.de> wrote:
> > > Michael Kerrisk <mtk.manpages@googlemail.com> wrote:
> > >
> > >  > b) It seems to me that you text doesn't quite make the point explicit
> > >  > enough.  I've tried to rewrite it; could you please check:
> > >  >
> > >  >        A6     Yes, but be aware of the following point.  A  file
> > >  >               descriptor is a reference to an open file descrip-
> > >  >               tion (see  open(2)).   Whenever  a  descriptor  is
> > >  >               duplicated  via dup(2), dup2(2), fcntl(2) F_DUPFD,
> [.........]
> 
> > >  > Does that seem okay?  I plan to include the text in man-pages-2.79.
> > >
> > >  It's hard to read for me, and probably very hard to read for others.
> > 
> > Bodo,
> > 
> > I'm just reviewing this text, trying to see if I can improve it.  At
> > the moment, I'm a little stuck.  can you say a little more about why
> > you find it hard to read?  that may help me improve it.
> 
> I think it's enough to mention that the last copy of the file descriptor 
> (e.g. by dup or fork) must be closed *or* the file must be explicitely 
> unregistered (As far as I understand by now).

Exactly!
Michael, I noticed that there's a reference to it in Q6. We better clarify 
that one.



- Davide