[PATCH v3 2/6] Landlock: Adding file_send_sigiotask signal scoping support

[Mickaël Salaün]

On Thu, Aug 15, 2024 at 12:29:21PM -0600, Tahera Fahimi wrote:
> This patch adds two new hooks "hook_file_set_fowner" and
> "hook_file_free_security" to set and release a pointer to the
> domain of the file owner. This pointer "fown_domain" in
> "landlock_file_security" will be used in "file_send_sigiotask"
> to check if the process can send a signal.

We need to make sure this file_send_sigiotask hook is useful and can be
triggered by user space code.  Currently, all tests pass without this
patch.