[PATCH v6 3/6] selftests/landlock: Add tests for whiteout object creation

[Günther Noack]

On Thu, Aug 13, 2026 at 11:31:54AM +0200, Günther Noack wrote:
> Add a test to check that whiteout object creation is guarded by
> LANDLOCK_ACCESS_FS_MAKE_REG, in the cases where these are created from
> userspace:
> 
> * Conventional creation with mknod()
> * Linking or renaming an existing whiteout object
> * renameat2() with RENAME_WHITEOUT,
>   which creates a new whiteout object in the source location

I forgot to update this commit message; this should say:

```
Add tests to check that whiteout object creation is guarded by
LANDLOCK_ACCESS_FS_MAKE_REG, in the cases where these are created from
userspace:

* Conventional creation with mknod()
* Linking or renaming an existing whiteout object
* renameat2() with RENAME_WHITEOUT,
  which creates a new whiteout object in the source location
* renameat2() with RENAME_EXCHANGE,
  with one of the renamed objects being a whiteout object
```

Please feel free to update it when picking up the change.

—Günther