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Mon, 14 Sep 2026 09:41:59 -0700 (PDT) From: Andrew Halaney Subject: [PATCH 0/3] keys: Add well known IDs for fs-verity/dm-verity keys Date: Mon, 14 Sep 2026 11:41:41 -0500 Message-Id: <20260914-ajhalaney-dmverity-key-identifier-v1-0-01922dc1366a@amutable.com> Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x3NSQ6DMBBE0augXqclbIYMV0EsTFyEzmCQjRAIc fe0WL7Fr9opIQoSPbKdIhZJMgaFuWT0HFx4gcWryea2zu+mZPce3NcFbOx/i7bzxh+FeIRZekH k0tyuXW2LokNFujNF9LKeH017HH+y3YXWcwAAAA== X-Change-ID: 20260914-ajhalaney-dmverity-key-identifier-4187b6233be5 To: Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , David Howells , Jarkko Sakkinen , Paul Moore , James Morris , "Serge E. Hallyn" , Eric Biggers , "Theodore Y. Ts'o" , Jonathan Corbet , Shuah Khan , Randy Dunlap Cc: dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org, keyrings@vger.kernel.org, linux-security-module@vger.kernel.org, bpf@vger.kernel.org, fsverity@lists.linux.dev, linux-doc@vger.kernel.org, Andrew Halaney , "Christian Brauner (Amutable)" X-Mailer: b4 0.14.3 This more or less follows the bpf keyring approach, allowing userspace to easily find the keys instead of having to parse /proc/keys. Signed-off-by: Andrew Halaney --- Andrew Halaney (3): keys: add KEY_SPEC_DM_VERITY_KEYRING keys: add KEY_SPEC_FS_VERITY_KEYRING Documentation: keys: document IDs added since KEY_SPEC_REQKEY_AUTH_KEY Documentation/security/keys/core.rst | 13 ++++++++ drivers/md/dm-verity-verify-sig.c | 3 ++ fs/verity/signature.c | 2 ++ include/linux/key.h | 2 ++ include/uapi/linux/keyctl.h | 2 ++ security/keys/process_keys.c | 58 ++++++++++++++++++++++++++++++++++++ 6 files changed, 80 insertions(+) --- base-commit: 1a1de54f7369cd2b5bac0f265910e60ad3a6b4c3 change-id: 20260914-ajhalaney-dmverity-key-identifier-4187b6233be5 Best regards, -- Andrew Halaney