Re: [PATCH] openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT

Shuah Khan
2020-10-27T22:28:33Z

On 10/7/20 4:36 AM, Aleksa Sarai wrote:
> This was an oversight in the original implementation, as it makes no
> sense to specify both scoping flags to the same openat2(2) invocation
> (before this patch, the result of such an invocation was equivalent to
> RESOLVE_IN_ROOT being ignored).
>
> This is a userspace-visible ABI change, but the only user of openat2(2)
> at the moment is LXC which doesn't specify both flags and so no
> userspace programs will break as a result.
>
> Cc: <stable@vger.kernel.org> # v5.6+
> Fixes: fddb5d430ad9 ("open: introduce openat2(2) syscall")
> Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
> Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
> ---
> fs/open.c | 4 +++
> tools/testing/selftests/openat2/openat2_test.c | 8 +++++++-

You are combining fs change with selftest change.

Is there a reason why these two changes are combined?
2 separate patches is better.

thanks,
-- Shuah