linux-kernel - Re: [RFC PATCH -v4 11/14] fsnotify: include pathnames with entries when possible

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Date:	Sat, 13 Dec 2008 11:42:42 -0500
From:	Eric Paris <eparis@...hat.com>
To:	Evgeniy Polyakov <zbr@...emap.net>
Cc:	linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl,
	viro@...IV.linux.org.uk, hch@...radead.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk
Subject: Re: [RFC PATCH -v4 11/14] fsnotify: include pathnames with entries
 when possible

On Sat, 2008-12-13 at 06:19 +0300, Evgeniy Polyakov wrote:
> On Fri, Dec 12, 2008 at 04:52:12PM -0500, Eric Paris (eparis@...hat.com) wrote:
> > When inotify wants to send events to a directory about a child it includes
> > the name of the original file.  This patch collects that filename and makes
> > it available for notification.
> 
> What about extending fsnotify with attributes so that there would be no
> problems extending it with new events and data sent to userspace?

Since struct fsnotify_event is not exported to userspace information may
be collected in there at event creation time.  I actually have a number
of later patches that do this for information that I want to send for
fanotify.

Information can also be stored in the event->private area if only one
group really cares....   (kinda how I store wd for inotify)

Information which is useful to more than 1 group should be added to
struct fsnotify_event and its up to the individual listeners to export
that to userspace anyway they want to.

So absolutely this is completely extensible.

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