Re: [PATCH v4 11/16] fs-verity: implement FS_IOC_MEASURE_VERITY ioctl

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On Thu, Jun 06, 2019 at 08:52:00AM -0700, Eric Biggers wrote:
> From: Eric Biggers <ebiggers@xxxxxxxxxx>
> 
> 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@xxxxxxxxxx>

Looks good; you can add:

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

						- Ted



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