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

[Christoph Hellwig]

On Tue, Jul 08, 2014 at 05:54:24PM +0100, David Drysdale wrote:
> > How is this implemented in FreeBSD?  I can't find any references to
> > O_BENEATH_ONLY except for your patchset.
> 
> FreeBSD have the relative-only behaviour for openat() relative to a
> Capsicum capability dfd [1], and for a process in capability-mode [2],
> but they don't have the O_BENEATH_ONLY as a separately-accessible
> openat() flag.  However, it seemed like a more widely useful idea so
> separating it out was suggested.

In that case we should make sure to use the same name and semantics for
it.  As far as I'm concerned I'd prefer a less clumsy name like
O_BENEATH.

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