linux-kernel - Re: [PATCH] Version 4 (2.6.23-rc8-mm2) Smack: Simplified Mandatory Access Control Kernel

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Message-ID: <384003.93417.qm@web36611.mail.mud.yahoo.com>
Date:	Wed, 3 Oct 2007 14:06:13 -0700 (PDT)
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>, casey@...aufler-ca.com
Cc:	Al Viro <viro@....linux.org.uk>, torvalds@...l.org,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, akpm@...l.org, paul.moore@...com
Subject: Re: [PATCH] Version 4 (2.6.23-rc8-mm2) Smack: Simplified Mandatory Access Control Kernel


--- Alan Cox <alan@...rguk.ukuu.org.uk> wrote:

> > An embedded system that does not have user logins but that does
> > have applications that require separation, perhaps a moble communication
> > device with application download capability, is just one example
> > where the smack symlink implementation provides the required
> > function without requiring application support.
> 
> I don't see what is such a problem here. For your mobile example you'd
> give the application download side its own /tmp via mount.
> 
> Its actually better this is done in user space as its more flexible that
> way and can be tuned arbitarily to meet interesting or bizarre real world
> cases.

I admit to being impressed by the wide variety of mount options
currently available. In many cases this will be the best approach.
/tmp is a typical use for a smack symlink, but not the only one.


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