[RFC] fs, proc: Introduce the /proc/<pid>/map_files/ directory v2

Pavel Emelyanov xemul at parallels.com
Wed Aug 24 23:42:44 PDT 2011


On 08/24/2011 09:36 PM, Andi Kleen wrote:
> Pavel Emelyanov <xemul at 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?

> -Andi
> 



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