linux-kernel - Re: Out of tree module using LSM

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Message-ID: <2c0942db0711291040j4ce48acagb753b64c4b8c1357@mail.gmail.com>
Date:	Thu, 29 Nov 2007 10:40:39 -0800
From:	"Ray Lee" <ray-lk@...rabbit.org>
To:	"Alan Cox" <alan@...rguk.ukuu.org.uk>
Cc:	tvrtko.ursulin@...hos.com, "Al Viro" <viro@....linux.org.uk>,
	"Casey Schaufler" <casey@...aufler-ca.com>,
	"Christoph Hellwig" <hch@...radead.org>,
	linux-kernel@...r.kernel.org, Valdis.Kletnieks@...edu
Subject: Re: Out of tree module using LSM

On Nov 29, 2007 9:36 AM, Alan Cox <alan@...rguk.ukuu.org.uk> wrote:
> > closed. But more importantly further access to it can be blocked until
> > appropriate actions are taken which also applies with your example, no? Is
>
> That bit is hard- very hard.

In some sense it seems like the same problem faced by dynamic
translators such as Qemu. They really want to vet a dirtied or faulted
page before allowing the app to run unhindered. It's be nice to have
some way to do that without virtualizing the whole of userspace.
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