These are still good with me and we'll likely have a similar future use for passing data through the ioctl. Could we get this staged for 5.3? On Tue, 2019-05-21 at 22:46 +0200, David Kozub wrote: > 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(-) >
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