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SubjectRe: [PATCH 01/11] fs: add O_BENEATH_ONLY flag to openat(2)
On Mon, Jun 30, 2014 at 1:40 PM, Andi Kleen <andi@firstfloor.org> wrote:
> David Drysdale <drysdale@google.com> writes:
>
>> Add a new O_BENEATH_ONLY flag for openat(2) which restricts the
>> provided path, rejecting (with -EACCES) paths that are not beneath
>> the provided dfd. In particular, reject:
>> - paths that contain .. components
>> - paths that begin with /
>> - symlinks that have paths as above.
>
> How about bind mounts?

What's the problematic scenario?

--Andy


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