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From: "Jose A. Lopes" <jabolopes@google.com>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: George Dunlap <george.dunlap@eu.citrix.com>,
	"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	Paul Durrant <Paul.Durrant@citrix.com>
Subject: Re: Guest to Host communication
Date: Mon, 4 Nov 2013 11:51:45 +0100	[thread overview]
Message-ID: <20131104105145.GB4704@google.com> (raw)
In-Reply-To: <1383249749.5436.112.camel@dagon.hellion.org.uk>

Hi,

Thanks, we'll have a look at that.

Regards,
Jose

On Thu, Oct 31, 2013 at 08:02:29PM +0000, Ian Campbell wrote:
> On Thu, 2013-10-31 at 19:42 +0100, Jose A. Lopes wrote:
> 
> > When you say "look inside" the filesystem do you mean to mount that
> > filesystem
> > in the host OS? If so, it seems that it is very dangerous to mount
> > guest filesystems
> > due to a number of exploits.
> 
> If you only need r/o access from the host then you could use
> tools/libfsimage (which has python binding, used by pygrub) which at
> least constrains things to a userspace process and not a kernel mode
> exploit. With suitable privilege dropping this can be made reasonably
> safe...
> 
> Ian.
> 
> 

-- 
Jose Antonio Lopes
Ganeti Engineering
Google Germany GmbH
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  reply	other threads:[~2013-11-04 10:51 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-22  7:59 Guest to Host communication Jose A. Lopes
2013-10-22  8:48 ` Paul Durrant
2013-10-22 12:48   ` Jose A. Lopes
2013-10-22 13:18     ` Paul Durrant
2013-10-22 13:42       ` Jose A. Lopes
2013-10-31 14:21         ` George Dunlap
2013-10-31 16:08           ` Jose A. Lopes
2013-10-31 16:13             ` George Dunlap
2013-10-31 18:42               ` Jose A. Lopes
2013-10-31 20:02                 ` Ian Campbell
2013-11-04 10:51                   ` Jose A. Lopes [this message]
2013-10-22 13:54       ` Konrad Rzeszutek Wilk

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