linux-kernel - [PATCH 0/3] block: sed-opal: add support for shadow MBR done flag and write

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Message-Id: <1556666459-17948-1-git-send-email-zub@linux.fjfi.cvut.cz>
Date:   Wed,  1 May 2019 01:20:56 +0200
From:   David Kozub <zub@...ux.fjfi.cvut.cz>
To:     Jens Axboe <axboe@...nel.dk>,
        Jonathan Derrick <jonathan.derrick@...el.com>,
        Scott Bauer <sbauer@...donthack.me>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Jonas Rabenstein <jonas.rabenstein@...dium.uni-erlangen.de>
Subject: [PATCH 0/3] block: sed-opal: add support for shadow MBR done flag and write

This patch series extends SED Opal support: it adds IOCTL for setting the shadow
MBR done flag which can be useful for unlocking an Opal disk on boot and it adds
IOCTL for writing to the shadow MBR.

The code has been already submitted in [1] but it was suggested to split this
part off. In comparison to that version, I tried to apply Scott's suggestions
from [2].

This series requires the previously-submitted Opal cleanup patches[3]. It
applies on current linux-next/master (e.g. next-20190430).

I successfully tested toggling the MBR done flag and writing the shadow MBR
using some tools I hacked together[4] with a Samsung SSD 850 EVO drive.

[1] https://lore.kernel.org/lkml/1549054223-12220-1-git-send-email-zub@linux.fjfi.cvut.cz/
[2] https://lore.kernel.org/lkml/20190210182655.GA20491@hacktheplanet/
[3] https://lore.kernel.org/lkml/1550103368-4605-1-git-send-email-zub@linux.fjfi.cvut.cz/
[4] https://gitlab.com/zub2/opalctl

Jonas Rabenstein (3):
  block: sed-opal: add ioctl for done-mark of shadow mbr
  block: sed-opal: ioctl for writing to shadow mbr
  block: sed-opal: check size of shadow mbr

 block/opal_proto.h            |  16 ++++
 block/sed-opal.c              | 160 +++++++++++++++++++++++++++++++++-
 include/linux/sed-opal.h      |   2 +
 include/uapi/linux/sed-opal.h |  20 +++++
 4 files changed, 196 insertions(+), 2 deletions(-)

-- 
2.20.1