linux-kernel - Re: [Tux3] Tux3 report: A Golden Copy

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Message-ID: <20090104130446.GA17558@mit.edu>
Date:	Sun, 4 Jan 2009 08:04:46 -0500
From:	Theodore Tso <tytso@....edu>
To:	Jamie Lokier <jamie@...reable.org>
Cc:	"Justin P. Mattock" <justinmattock@...il.com>,
	Daniel Phillips <phillips@...nq.net>, tux3@...3.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Tux3] Tux3 report: A Golden Copy

On Sun, Jan 04, 2009 at 03:17:33AM +0000, Jamie Lokier wrote:
> Justin P. Mattock wrote:
> > >One feature we are kicking around to make life easier for SELinux:
> > >sometimes the filesystem can run while SELinux is not running, and
> > >security labels will be wrong when SELinux re-enters the picture.  We
> > >have in mind to provide a persistent log of filesystem events that the
> > >security system can attach to on startup and find out what went on in
> > >its absence.
> > >
> That sounds like a feature Windows had for many years now, (since
> Windows 2000?).  It complements the Windows equivlant of
> dnotify/inotify/fsnotify.

Arguably you want to do this in the VFS layer, not in the low-level
filesystem level if you want most applications to adopt it.

> It's used for file indexing too (think equivalent to Spotlight,
> Beagle, etc.), and other types of security scanning (think equivalent
> to Tripwire).

Eric Paris has a patch he's been proposing for a while now for a new
notify mechanism designed for anti-virus scanners...

						- Ted
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