From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cyrill Gorcunov <gorcunov@gmail.com>
Subject: Re: [patch 2/2] fs, proc: Introduce the /proc/<pid>/map_files/
 directory v12
Date: Thu, 15 Sep 2011 15:00:11 +0400
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Cc: Pavel Machek <pavel@ucw.cz>, Andrew Morton <akpm00@gmail.com>,
	linux-kernel@vger.kernel.org, containers@lists.osdl.org,
	linux-fsdevel@vger.kernel.org,
	Kirill Shutemov <kirill@shutemov.name>,
	Pavel Emelyanov <xemul@parallels.com>,
	James Bottomley <jbottomley@parallels.com>,
	Nathan Lynch <ntl@pobox.com>, Zan Lynx <zlynx@acm.org>,
	Daniel Lezcano <dlezcano@fr.ibm.com>,
	Tejun Heo <tj@kernel.org>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	Al Viro <viro@ZenIV.linux.org.uk>,
	Andrew Morton <akpm@linux-foundation.org>
To: Vasiliy Kulikov <segoon@openwall.com>
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On Thu, Sep 15, 2011 at 02:56:51PM +0400, Vasiliy Kulikov wrote:
...
> > > 
> > > How can you restore a set of processes in case they share an RW mapping
> > > as RW in both tasks if you deny opening /proc/$pid/map_files/$address as W?
> > 
> > I can read the link first to figure out the file path and re-open it as rw via
> > path itself (which implies the restorer still must have enough rights to open
> > it as rw).
> 
> And what about RW mapping of unlinked files?
> 

Need to figure some workaround

	Cyrill