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block: sed-opal: add ioctl for done-mark of shadow mbr

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Enable users to mark the shadow mbr as done without completely
deactivating the shadow mbr feature. This may be useful on reboots,
when the power to the disk is not disconnected in between and the shadow
mbr stores the required boot files. Of course, this saves also the
(few) commands required to enable the feature if it is already enabled
and one only wants to mark the shadow mbr as done.

Co-authored-by: David Kozub <zub@linux.fjfi.cvut.cz>
Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed by: Scott Bauer <sbauer@plzdonthack.me>
Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jonas Rabenstein 2019-05-21 22:46:44 +02:00 • committed by Jens Axboe
parent b620743077
commit c988844341
3 changed files with 40 additions and 0 deletions
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12
include/uapi/linux/sed-opal.h
View file

@ -20,6 +20,11 @@ enum opal_mbr {
OPAL_MBR_DISABLE = 0x01,
};
enum opal_mbr_done_flag {
OPAL_MBR_NOT_DONE = 0x0,
OPAL_MBR_DONE = 0x01
};
enum opal_user {
OPAL_ADMIN1 = 0x0,
OPAL_USER1 = 0x01,
@ -95,6 +100,12 @@ struct opal_mbr_data {
__u8 __align[7];
};
struct opal_mbr_done {
struct opal_key key;
__u8 done_flag;
__u8 __align[7];
};
#define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock)
#define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock)
#define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key)
@ -108,5 +119,6 @@ struct opal_mbr_data {
#define IOC_OPAL_ERASE_LR _IOW('p', 230, struct opal_session_info)
#define IOC_OPAL_SECURE_ERASE_LR _IOW('p', 231, struct opal_session_info)
#define IOC_OPAL_PSID_REVERT_TPR _IOW('p', 232, struct opal_key)
#define IOC_OPAL_MBR_DONE _IOW('p', 233, struct opal_mbr_done)
#endif /* _UAPI_SED_OPAL_H */