Milan Broz d891e00f63 Add kernel keyring functions for volume key. ...

Code is written by Ondrej Kozina.

This patch adds ability to store volume key in kernel keyring
(feature available in recent kernels) and avoid setting
key through dm-ioctl and avoiding key in table mapping.

Will be used in LUKS2.

Signed-off-by: Milan Broz <gmazyland@gmail.com>

2017-08-06 21:30:51 +02:00

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