Re: [PATCH v3 2/2] lsm,io_uring: add LSM hooks for io_uring_setup()

Paul Moore
2025-01-27T21:23:16Z

On Mon, Jan 27, 2025 at 12:18 PM Casey Schaufler <casey@schaufler-ca.com> wrote:
> On 1/27/2025 7:57 AM, Hamza Mahfooz wrote:
> > It is desirable to allow LSM to configure accessibility to io_uring
> > because it is a coarse yet very simple way to restrict access to it. So,
> > add an LSM for io_uring_allowed() to guard access to io_uring.
>
> I don't like this at all at all. It looks like you're putting in a hook
> so that io_uring can easily deflect any responsibility for safely
> interacting with LSMs.

That's not how this works Casey, unless you're seeing something different?

This is an additional access control point for io_uring, largely to
simplify what a LSM would need to do to help control a process' access
to io_uring, it does not replace any of the io_uring LSM hooks or
access control points.

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