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. This applies on current master. I successfully tested toggling the MBR done flag and writing the shadow MBR using some tools I hacked together[1] with a Samsung SSD 850 EVO drive. Changes from v1: * PATCH 2/3: remove check with access_ok, just rely on copy_from_user as suggested in [2] (I tested passing data == 0 and I got the expected EFAULT) [1] https://gitlab.com/zub2/opalctl [2] https://lore.kernel.org/lkml/20190501134833.GB24132@xxxxxxxxxxxxx/ 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 | 157 +++++++++++++++++++++++++++++++++- include/linux/sed-opal.h | 2 + include/uapi/linux/sed-opal.h | 20 +++++ 4 files changed, 193 insertions(+), 2 deletions(-) -- 2.20.1
