linux-kernel - Re: [PATCH 3/3] fuse: Allow mounts from user namespaces

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Message-ID: <CAJfpegvMeiZG09U3aXvxKV+GPSn6zFgLbUwXGpTuoVSbnvgfmw@mail.gmail.com>
Date:	Fri, 18 Jul 2014 17:33:23 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Seth Forshee <seth.forshee@...onical.com>
Cc:	Kernel Mailing List <linux-kernel@...r.kernel.org>,
	fuse-devel <fuse-devel@...ts.sourceforge.net>,
	lxc-devel@...ts.linuxcontainers.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Serge Hallyn <serge.hallyn@...ntu.com>,
	"Michael H. Warfield" <mhw@...tsend.com>
Subject: Re: [PATCH 3/3] fuse: Allow mounts from user namespaces

On Mon, Jul 14, 2014 at 9:18 PM, Seth Forshee
<seth.forshee@...onical.com> wrote:
> Update fuse to allow mounts from user namespaces. During mount
> current_user_ns() is stashed away,

Same thing here.  While practically this may work, it's theoretically
wrong, and possibly may go wrong in special situations.   In fuse
there's no official "server process", so storing information, like
namespace, about one is going to be wrong.

Thanks,
Miklos
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