Commit 9ec041ea authored by Luca Boccassi's avatar Luca Boccassi Committed by Jens Axboe
Browse files

sed-opal: add support flag for SUM in status ioctl 



Not every OPAL drive supports SUM (Single User Mode), so report this
information to userspace via the get-status ioctl so that we can adjust
the formatting options accordingly.
Tested on a kingston drive (which supports it) and a samsung one
(which does not).

Signed-off-by: default avatarLuca Boccassi <bluca@debian.org>
Link: https://lore.kernel.org/r/20230210010612.28729-1-luca.boccassi@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 0aa2988e

block/sed-opal.c

+2 −0
Original line number Diff line number Diff line
@@ -487,6 +487,8 @@ static int opal_discovery0_end(struct opal_dev *dev) 
			break;

		case FC_SINGLEUSER:

			single_user = check_sum(body->features);

			if (single_user)

				dev->flags |= OPAL_FL_SUM_SUPPORTED;

			break;

		case FC_GEOMETRY:

			check_geometry(dev, body);

include/uapi/linux/sed-opal.h

+1 −0
Original line number Diff line number Diff line
@@ -144,6 +144,7 @@ struct opal_read_write_table { 
#define OPAL_FL_LOCKED			0x00000008

#define OPAL_FL_MBR_ENABLED		0x00000010

#define OPAL_FL_MBR_DONE		0x00000020

#define OPAL_FL_SUM_SUPPORTED		0x00000040



struct opal_status {

	__u32 flags;