linux-kernel - Re: [PATCH] ACL supports to mqueue

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Message-ID: <CAH-7YMmx0J+pQFfrU4KW2ahFDPL3udvAUgPy4_Hf19HP46MZHw@mail.gmail.com>
Date:	Fri, 21 Oct 2011 18:46:28 +0800
From:	Zhou Peng <ailvpeng25@...il.com>
To:	James Morris <jmorris@...ei.org>
Cc:	Casey Schaufler <casey@...aufler-ca.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-security-module@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH] ACL supports to mqueue

Thank you James for your viewing.

* In general, it can give a more fine grained and flexible DAC to msg queue obj.
* NFSARK(A distro) wants all posix ipc objects to support ACL, including mqueue.
* Posix semphore and shmem both support ACL, but mqueue as one of the
three basic ipc doesn't.
* At least, it may save one note sentence for MQ_OVERVIEW(7)   ^_^
    "Linux does not currently (2.6.26) support the use of access
control lists (ACLs) for POSIX message queues."
    http://www.kernel.org/doc/man-pages/online/pages/man7/mq_overview.7.html

On Thu, Oct 20, 2011 at 11:33 PM, James Morris <jmorris@...ei.org> wrote:
> On Thu, 20 Oct 2011, Zhou Peng wrote:
>
>> This patch adds ACL supports to mqueue filesystem.
>> Based on Linux 3.0.4.
>
> Why is this necessary, and who is planning to use it?
>
> Are any distros likely to enable this?
>
>
> - James
> --
> James Morris
> <jmorris@...ei.org>
>



-- 
Zhou Peng
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