Re: [PATCH 01/11] fs: add O_BENEATH_ONLY flag to openat(2)

[Christoph Hellwig]

On Mon, Jun 30, 2014 at 11:28:01AM +0100, David Drysdale wrote:
> 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 is this implemented in FreeBSD?  I can't find any references to
O_BENEATH_ONLY except for your patchset.
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