linux-kernel - Re: [PATCH v3 2/6] Landlock: Adding file_send

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Message-ID: <20240821.oBeepeel9ir1@digikod.net>
Date: Wed, 21 Aug 2024 12:13:28 +0200
From: Mickaël Salaün <mic@...ikod.net>
To: Tahera Fahimi <fahimitahera@...il.com>
Cc: outreachy@...ts.linux.dev, gnoack@...gle.com, paul@...l-moore.com, 
	jmorris@...ei.org, serge@...lyn.com, linux-security-module@...r.kernel.org, 
	linux-kernel@...r.kernel.org, bjorn3_gh@...tonmail.com, jannh@...gle.com, 
	netdev@...r.kernel.org
Subject: Re: [PATCH v3 2/6] Landlock: Adding file_send_sigiotask signal
 scoping support

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.
> 
> Signed-off-by: Tahera Fahimi <fahimitahera@...il.com>
> ---
>  security/landlock/fs.c   | 18 ++++++++++++++++++
>  security/landlock/fs.h   |  6 ++++++
>  security/landlock/task.c | 27 +++++++++++++++++++++++++++
>  3 files changed, 51 insertions(+)

Please squash this patch with the previous one, both are enforcing the
signal scoping restriction with LANDLOCK_SCOPED_SIGNAL.

You'll also need to update the scoped_test.c file with
LANDLOCK_SCOPED_SIGNAL (in this same squashed patch).