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List:       linux-api
Subject:    Re: [v2] fscrypt: Move key structure and constants to uapi
From:       Theodore Ts'o <tytso () mit ! edu>
Date:       2017-04-30 6:16:33
Message-ID: 20170430061633.xb5i54g2ftxbwtij () thunk ! org
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On Thu, Apr 06, 2017 at 04:14:05PM -0700, Joe Richey wrote:
> From: Joe Richey <joerichey@google.com>
> 
> This commit exposes the necessary constants and structures for a
> userspace program to pass filesystem encryption keys into the keyring.
> The fscrypt_key structure was already part of the kernel ABI, this
> change just makes it so programs no longer have to redeclare these
> structures (like e4crypt in e2fsprogs currently does).
> 
> Note that we do not expose the other FS_*_KEY_SIZE constants as they are
> not necessary. Only XTS is supported for contents_encryption_mode, so
> currently FS_MAX_KEY_SIZE bytes of key material must always be passed to
> the kernel.
> 
> This commit also removes __packed from fscrypt_key as it does not
> contain any implicit padding and does not refer to an on-disk structure.
> 
> Signed-off-by: Joe Richey <joerichey@google.com>

Thanks, applied.

					- Ted
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