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block: sed-opal: PSID reverttper capability

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PSID is a 32 character password printed on the drive label,
to prove its physical access. This PSID reverttper function
is very useful to regain the control over the drive when it
is locked and the user can no longer access it because of some
failures. However, *all the data on the drive is completely
erased*. This method is advisable only when the user is exhausted
of all other recovery methods.

PSID capabilities are described in:
https://trustedcomputinggroup.org/wp-content/uploads/TCG_Storage-Opal_Feature_Set_PSID_v1.00_r1.00.pdf

Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Revanth Rajashekar
2019-06-27 16:30:02 -06:00
committed by Jens Axboe
parent fbbe7c86b4
commit 5e4c7cf60e
3 changed files with 31 additions and 4 deletions
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1
include/linux/sed-opal.h
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@@ -39,6 +39,7 @@ static inline bool is_sed_ioctl(unsigned int cmd)
case IOC_OPAL_ENABLE_DISABLE_MBR:
case IOC_OPAL_ERASE_LR:
case IOC_OPAL_SECURE_ERASE_LR:
case IOC_OPAL_PSID_REVERT_TPR:
return true;
}
return false;