linux-kernel - Re: [PATCH 08/28] SECURITY: Allow kernel services to override LSM settings for task actions [try #2]

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Message-ID: <112273.38088.qm@web36611.mail.mud.yahoo.com>
Date:	Mon, 10 Dec 2007 15:56:57 -0800 (PST)
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	David Howells <dhowells@...hat.com>, casey@...aufler-ca.com
Cc:	dhowells@...hat.com, Stephen Smalley <sds@...ho.nsa.gov>,
	Karl MacMillan <kmacmill@...hat.com>, viro@....linux.org.uk,
	hch@...radead.org, Trond.Myklebust@...app.com,
	linux-kernel@...r.kernel.org, selinux@...ho.nsa.gov,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH 08/28] SECURITY: Allow kernel services to override LSM settings for task actions [try #2]


--- David Howells <dhowells@...hat.com> wrote:

> Casey Schaufler <casey@...aufler-ca.com> wrote:
> 
> > That happens to me when interfaces are described in SELinux terms. I
> > still don't care much for multiple contexts, and I don't have a good
> > grasp of how you'll deal with Smack, or any LSM other than SELinux.
> 
> Me neither.  I understand SELinux somewhat, though it's got a lot of wibbly
> bits, and WinNT's security system, but I have no experience of the other
> stuff.
> 
> > Just as Stephen mentions, I also don't see the generality that a change
> > of this magnitude really ought to provide.
> 
> Perhaps it should be a specific interface, solely for cachefiles's use then.

That would help focus things, to be sure. I don't know if that
focus will speed things up or slow them down, but I think that
attempting to accomodate SELinux/NFS, with the state that effort
is in, will only lead to tears.


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