From: "Günther Noack" <gnoack@google.com>
To: "Mickaël Salaün" <mic@digikod.net>,
"Christian Brauner" <brauner@kernel.org>
Cc: linux-security-module@vger.kernel.org,
Paul Moore <paul@paul-moore.com>,
Amir Goldstein <amir73il@gmail.com>,
Miklos Szeredi <miklos@szeredi.hu>,
Serge Hallyn <serge@hallyn.com>,
Stephen Smalley <stephen.smalley.work@gmail.com>
Subject: Re: [PATCH v6 3/6] selftests/landlock: Add tests for whiteout object creation
Date: Thu, 13 Aug 2026 13:54:40 +0200 [thread overview]
Message-ID: <an2wgGdmYzrulP-c@google.com> (raw)
In-Reply-To: <20260813093157.1436894-4-gnoack@google.com>
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
next prev parent reply other threads:[~2026-08-13 11:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 9:31 [PATCH v6 0/6] landlock: Restrict whiteout object creation Günther Noack
2026-08-13 9:31 ` [PATCH v6 1/6] selftests/landlock: Use an actual chardev for MAKE_CHAR audit test Günther Noack
2026-08-13 9:31 ` [PATCH v6 2/6] landlock: Require LANDLOCK_ACCESS_FS_MAKE_REG for whiteout creation Günther Noack
2026-08-13 9:31 ` [PATCH v6 3/6] selftests/landlock: Add tests for whiteout object creation Günther Noack
2026-08-13 11:54 ` Günther Noack [this message]
2026-08-13 9:31 ` [PATCH v6 4/6] selftests/landlock: Add audit test " Günther Noack
2026-08-13 9:31 ` [PATCH v6 5/6] selftests/landlock: Test whiteout object behaviour in OverlayFS renames Günther Noack
2026-08-13 9:31 ` [PATCH v6 6/6] landlock: Link the erratum documentation for whiteout objects Günther Noack
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