Received-SPF: pass (google.com: domain of linux-kernel+bounces-105701-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161;
Date: Sun, 17 Mar 2024 22:17:03 -0700
From: Eric Biggers <ebiggers@kernel.org>
To: Fan Wu <wufan@linux.microsoft.com>
Cc: corbet@lwn.net, zohar@linux.ibm.com, jmorris@namei.org,
	serge@hallyn.com, tytso@mit.edu, axboe@kernel.dk, agk@redhat.com,
	snitzer@kernel.org, eparis@redhat.com, paul@paul-moore.com,
	linux-doc@vger.kernel.org, linux-integrity@vger.kernel.org,
	linux-security-module@vger.kernel.org, fsverity@lists.linux.dev,
	linux-block@vger.kernel.org, dm-devel@lists.linux.dev,
	audit@vger.kernel.org, linux-kernel@vger.kernel.org,
	Deven Bowers <deven.desai@linux.microsoft.com>
Subject: Re: [RFC PATCH v15 18/21] ipe: enable support for fs-verity as a
 trust provider
Message-ID: <20240318051703.GB63337@sol.localdomain>
References: <1710560151-28904-1-git-send-email-wufan@linux.microsoft.com>
 <1710560151-28904-19-git-send-email-wufan@linux.microsoft.com>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1710560151-28904-19-git-send-email-wufan@linux.microsoft.com>

On Fri, Mar 15, 2024 at 08:35:48PM -0700, Fan Wu wrote:
> +config IPE_PROP_FS_VERITY
> +	bool "Enable property for fs-verity files"
> +	depends on FS_VERITY && FS_VERITY_BUILTIN_SIGNATURES
> +	help
> +	  This option enables the usage of properties "fsverity_signature"
> +	  and "fsverity_digest". These properties evaluate to TRUE when
> +	  a file is fsverity enabled and with a signed digest

Again: why would anyone care if there is a signature, if that signature is not
checked.

I think you meant to write something like: "when a file is fsverity enabled and
has a valid builtin signature whose signing cert is in the .fs-verity keyring".

- Eric