lkml.org 
[lkml]   [2011]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] fs, proc: Introduce the /proc/<pid>/map_files/ directory v2
On Thu, Aug 25, 2011 at 10:42:44AM +0400, Pavel Emelyanov wrote:
> On 08/24/2011 09:36 PM, Andi Kleen wrote:
> > Pavel Emelyanov <xemul@parallels.com> writes:
> >>
> >> No and this is the trick - when you readlink it - it give you trash, but
> >> when you open one - you get exactly the same file as the map points to.
> >
> > Isn't that a minor security hole?
> >
> > For example if I pass a file descriptor into a chroot process for
> > reading, and with this interface you can open it for writing too.
> > I could see this causing problems.
>
> How does it differ from the /proc/pid/fd links?

Those cannot be opened I thought.
-Andi

--
ak@linux.intel.com -- Speaking for myself only.


\
 
 \ /
  Last update: 2011-08-25 16:07    [W:0.153 / U:0.520 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site