linux-kernel - Re: [RFC] cgroups: implement device whitelist lsm (v2)

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Date:	Fri, 14 Mar 2008 09:27:32 +1100 (EST)
From:	James Morris <jmorris@...ei.org>
To:	"Serge E. Hallyn" <serue@...ibm.com>
cc:	lkml <linux-kernel@...r.kernel.org>,
	linux-security-module@...r.kernel.org, Greg KH <greg@...ah.com>,
	Stephen Smalley <sds@...ch.ncsc.mil>,
	Casey Schaufler <casey@...aufler-ca.com>,
	Pavel Emelianov <xemul@...nvz.org>
Subject: Re: [RFC] cgroups: implement device whitelist lsm (v2)

On Thu, 13 Mar 2008, Serge E. Hallyn wrote:

> True, but while this change simplifies the code a bit, the semantics
> seem more muddled - devcg will be enforcing when CONFIG_CGROUP_DEV=y
> and:
> 
> 	SECURITY=n or
> 	rootplug is enabled
> 	capabilities is enabled
> 	smack is enabled
> 	selinux+capabilities is enabled

Well, this is how real systems are going to be deployed.

It becomes confusing, IMHO, if you have to change which secondary LSM you 
stack with SELinux to enable a cgroup feature.

-- 
James Morris
<jmorris@...ei.org>
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