From: Anthony Liguori <anthony@codemonkey.ws>
To: Blue Swirl <blauwirbel@gmail.com>
Cc: aliguori@us.ibm.com, Corey Bryant <bryntcor@us.ibm.com>,
Tyler C Hicks <tchicks@us.ibm.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] Add support for fd: protocol
Date: Fri, 20 May 2011 14:42:28 -0500 [thread overview]
Message-ID: <4DD6C424.1020104@codemonkey.ws> (raw)
In-Reply-To: <BANLkTi=xZMTfvcbhZ2MdmJoFmot--bU2Fg@mail.gmail.com>
On 05/20/2011 02:25 PM, Blue Swirl wrote:
> On Fri, May 20, 2011 at 9:48 PM, Corey Bryant<bryntcor@us.ibm.com> wrote:
>> sVirt provides SELinux MAC isolation for Qemu guest processes and their
>> corresponding resources (image files). sVirt provides this support
>> by labeling guests and resources with security labels that are stored
>> in file system extended attributes. Some file systems, such as NFS, do
>> not support the extended attribute security namespace, which is needed
>> for image file isolation when using the sVirt SELinux security driver
>> in libvirt.
>>
>> The proposed solution entails a combination of Qemu, libvirt, and
>> SELinux patches that work together to isolate multiple guests' images
>> when they're stored in the same NFS mount. This results in an
>> environment where sVirt isolation and NFS image file isolation can both
>> be provided.
>
> Very nice. QEMU should use this to support privilege separation. We
> already have chroot and runas switches, a new switch should convert
> all file references to fd references internally for that process. If
> this can be made transparent, this should even be the default way of
> operation.
You mean, QEMU starts up, opens all disk images, reinvokes itself in a
confined context, and then passes fds to the child?
Interesting idea.
Regards,
Anthony Liguori
>
next prev parent reply other threads:[~2011-05-20 19:42 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-20 18:48 [Qemu-devel] [PATCH] Add support for fd: protocol Corey Bryant
2011-05-20 19:05 ` Anthony Liguori
2011-05-20 19:25 ` Blue Swirl
2011-05-20 19:42 ` Anthony Liguori [this message]
2011-05-20 19:53 ` Blue Swirl
2011-05-23 14:28 ` Kevin Wolf
2011-05-23 15:24 ` Markus Armbruster
2011-05-23 15:56 ` Kevin Wolf
2011-05-23 19:50 ` Blue Swirl
2011-05-23 21:55 ` Anthony Liguori
2011-05-23 18:20 ` Corey Bryant
2011-05-23 9:45 ` Daniel P. Berrange
2011-05-23 10:19 ` Stefan Hajnoczi
2011-05-23 10:30 ` Daniel P. Berrange
2011-05-23 12:59 ` Anthony Liguori
2011-05-23 14:35 ` Markus Armbruster
2011-05-23 22:49 ` Jamie Lokier
2011-05-24 8:39 ` Stefan Hajnoczi
2011-05-24 15:31 ` Jamie Lokier
2011-05-23 12:50 ` Anthony Liguori
2011-05-23 13:06 ` Daniel P. Berrange
2011-05-23 13:09 ` Stefan Hajnoczi
2011-05-23 13:21 ` Anthony Liguori
2011-05-23 13:26 ` Stefan Hajnoczi
2011-05-23 13:42 ` Daniel P. Berrange
2011-05-23 9:48 ` Daniel P. Berrange
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