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Date:	Mon, 30 Jun 2014 13:40:40 -0700
From:	Andi Kleen <>
To:	David Drysdale <>
	Greg Kroah-Hartman <>,
	Alexander Viro <>,
	Meredydd Luff <>,
	Kees Cook <>,
	James Morris <>,
Subject: Re: [PATCH 01/11] fs: add O_BENEATH_ONLY flag to openat(2)

David Drysdale <> 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?


-- -- Speaking for myself only
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