Re: [PATCH] openat2: reject RESOLVE_BENEATH|RESOLVE_IN_ROOT

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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@xxxxxxxxxxxxxxx> # v5.6+
Fixes: fddb5d430ad9 ("open: introduce openat2(2) syscall")
Acked-by: Christian Brauner <christian.brauner@xxxxxxxxxx>
Signed-off-by: Aleksa Sarai <cyphar@xxxxxxxxxx>
---
  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



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