linux-kernel - Re: [patch 1/2] [RFC] Simple tamper-proof device filesystem.

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Message-ID: <968709.86780.qm@web36604.mail.mud.yahoo.com>
Date:	Tue, 18 Dec 2007 08:43:11 -0800 (PST)
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	Valdis.Kletnieks@...edu, Pavel Machek <pavel@....cz>
Cc:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 1/2] [RFC] Simple tamper-proof device filesystem.


--- Valdis.Kletnieks@...edu wrote:

> On Thu, 06 Dec 2007 15:29:07 GMT, Pavel Machek said:
> > 
> > > Why not use SELinux?
> > > 
> > >  Because SELinux doesn't guarantee filename and its attribute.
> > >  The purpose of this filesystem is to ensure filename and its attribute
> > >  (e.g. /dev/null is guaranteed to be a character device file
> > >  with major=1 and minor=3).
> > 
> > Why not improve selinux to be able to assign label of new file based
> > on directory label and name?
> 
> The problem isn't the label, it's the *other* attributes...
> 
> What happens if /dev/null has the correct SELinux label, but the major/minor
> is 1,27 rather than 1,3?

Isn't this the kind of thing that Bastille is good for?


Casey Schaufler
casey@...aufler-ca.com
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