Date: Tue, 25 Jul 2017 12:53:17 -0500
From: "Serge E. Hallyn" <serge@hallyn.com>
To: Mehmet Kayaalp <mkayaalp@linux.vnet.ibm.com>
Cc: ima-devel <linux-ima-devel@lists.sourceforge.net>,
        containers <containers@lists.linux-foundation.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        linux-security-module <linux-security-module@vger.kernel.org>,
        Tycho Andersen <tycho@docker.com>,
        "Serge E . Hallyn" <serge@hallyn.com>,
        Yuqiong Sun <sunyuqiong1988@gmail.com>,
        David Safford <david.safford@ge.com>,
        Mehmet Kayaalp <mkayaalp@cs.binghamton.edu>,
        Stefan Berger <stefanb@linux.vnet.ibm.com>,
        Yuqiong Sun <suny@us.ibm.com>
Subject: Re: [RFC PATCH 1/5] ima: extend clone() with IMA namespace support
Message-ID: <20170725175317.GA727@mail.hallyn.com>
References: <20170720225033.21298-1-mkayaalp@linux.vnet.ibm.com>
 <20170720225033.21298-2-mkayaalp@linux.vnet.ibm.com>
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On Thu, Jul 20, 2017 at 06:50:29PM -0400, Mehmet Kayaalp wrote:
> From: Yuqiong Sun <suny@us.ibm.com>
> 
> Add new CONFIG_IMA_NS config option.  Let clone() create a new IMA
> namespace upon CLONE_NEWNS flag. Add ima_ns data structure in nsproxy.
> ima_ns is allocated and freed upon IMA namespace creation and exit.
> Currently, the ima_ns contains no useful IMA data but only a dummy
> interface. This patch creates the framework for namespacing the different
> aspects of IMA (eg. IMA-audit, IMA-measurement, IMA-appraisal).
> 
> Signed-off-by: Yuqiong Sun <suny@us.ibm.com>
> 
> Changelog:
> * Use CLONE_NEWNS instead of a new CLONE_NEWIMA flag

Hi,

So this means that every mount namespace clone will clone a new IMA
namespace.  Is that really ok?