Re: [PATCH -mm 5/7] add user namespace

[Serge E. Hallyn]

Quoting Eric W. Biederman (ebiederm@xxxxxxxxxxxx):
> Dave Hansen <haveblue@xxxxxxxxxx> writes:
> 
> > On Thu, 2006-07-13 at 21:45 -0600, Eric W. Biederman wrote:
> >> I think for filesystems like /proc and /sys that there will normally
> >> be problems.  However many of those problems can be rationalized away
> >> as a reasonable optimization, or are not immediately apparent.
> >
> > Could you talk about some of these problems?
> 
> Already mentioned but.  rw permissions on sensitive files are for 
> uid == 0.  No capability checks are performed.

As Herbert (IIRC) pointed out that could/should be fixed.

-serge
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