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Date: Wed, 25 Feb 2009 12:07:12 -0700 From: Matthew Wilcox <matthew@....cx> To: "David P. Quigley" <dpquigl@...ho.nsa.gov> Cc: hooanon05@...oo.co.jp, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [RFC 0/8] Aufs2 documents On Wed, Feb 25, 2009 at 12:50:54PM -0500, David P. Quigley wrote: > I think it would be useful to see the source code for AUFS2 posted to > LKML. One of the questions I have not which doesn't seem to be addressed > in these documents is how robust is your xattr support and are you > making the appropriate LSM calls to make this usable with SELinux and > Smack. Also from a labeling perspective you have a very interesting > question of which label do you select when unifying directories. If you > have a/foo and b/foo each with different labels which do you choose. > Based on the history of Union type file systems I would suspect the > answer is whichever branch is listed first. That would provide an interesting way to bypass security protections on a directory. I suspect it should deny access if *any* of the unioned directories would deny access. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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