linux-ext4 - Re: [PATCH v6 13/17] fs-verity: support builtin file signatures

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Date:   Sun, 7 Jul 2019 14:47:11 -0400
From:   "Theodore Ts'o" <tytso@....edu>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     linux-fscrypt@...r.kernel.org, linux-ext4@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        linux-integrity@...r.kernel.org, Jaegeuk Kim <jaegeuk@...nel.org>,
        Victor Hsieh <victorhsieh@...gle.com>,
        Chandan Rajendra <chandan@...ux.vnet.ibm.com>,
        Dave Chinner <david@...morbit.com>,
        Christoph Hellwig <hch@....de>,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v6 13/17] fs-verity: support builtin file signatures

On Mon, Jul 01, 2019 at 08:32:33AM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> To meet some users' needs, add optional support for having fs-verity
> handle a portion of the authentication policy in the kernel.  An
> ".fs-verity" keyring is created to which X.509 certificates can be
> added; then a sysctl 'fs.verity.require_signatures' can be set to cause
> the kernel to enforce that all fs-verity files contain a signature of
> their file measurement by a key in this keyring.
> 
> See the "Built-in signature verification" section of
> Documentation/filesystems/fsverity.rst for the full documentation.
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Looks good, you can add:

Reviewed-by: Theodore Ts'o <tytso@....edu>