linux-ext4 - Re: [PATCH v4 11/16] fs-verity: implement FS_IOC_MEASURE

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Date:   Sat, 15 Jun 2019 11:10:05 -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>,
        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 v4 11/16] fs-verity: implement FS_IOC_MEASURE_VERITY ioctl

On Thu, Jun 06, 2019 at 08:52:00AM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@...gle.com>
> 
> Add a function for filesystems to call to implement the
> FS_IOC_MEASURE_VERITY ioctl.  This ioctl retrieves the file measurement
> that fs-verity calculated for the given file and is enforcing for reads;
> i.e., reads that don't match this hash will fail.  This ioctl can be
> used for authentication or logging of file measurements in userspace.
> 
> See the "FS_IOC_MEASURE_VERITY" section of
> Documentation/filesystems/fsverity.rst for the documentation.
> 
> Signed-off-by: Eric Biggers <ebiggers@...gle.com>

Looks good; you can add:

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

						- Ted