diff options
| author | Revanth Rajashekar <revanth.rajashekar@intel.com> | 2019-10-31 10:13:21 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-11-04 07:11:31 -0700 |
| commit | 51f421c85c880dcb37df11e672b384eaa4444328 (patch) | |
| tree | 325f63d13354aaec384c572a4cd64efe4c0c5e4d /include/uapi | |
| parent | 3495ea1b5f6083b03af062095eecb37283a2cc8f (diff) | |
block: sed-opal: Add support to read/write opal tables generically
This feature gives the user RW access to any opal table with admin1
authority. The flags described in the new structure determines if the user
wants to read/write the data. Flags are checked for valid values in
order to allow future features to be added to the ioctl.
The user can provide the desired table's UID. Also, the ioctl provides a
size and offset field and internally will loop data accesses to return
the full data block. Read overrun is prevented by the initiator's
sec_send_recv() backend. The ioctl provides a private field with the
intention to accommodate any future expansions to the ioctl.
Reviewed-by: Scott Bauer <sbauer@plzdonthack.me>
Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/sed-opal.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/uapi/linux/sed-opal.h b/include/uapi/linux/sed-opal.h index c6d035fa1b6c..6f5af1a84213 100644 --- a/include/uapi/linux/sed-opal.h +++ b/include/uapi/linux/sed-opal.h @@ -113,6 +113,25 @@ struct opal_shadow_mbr { __u64 size; }; +/* Opal table operations */ +enum opal_table_ops { + OPAL_READ_TABLE, + OPAL_WRITE_TABLE, +}; + +#define OPAL_UID_LENGTH 8 +struct opal_read_write_table { + struct opal_key key; + const __u64 data; + const __u8 table_uid[OPAL_UID_LENGTH]; + __u64 offset; + __u64 size; +#define OPAL_TABLE_READ (1 << OPAL_READ_TABLE) +#define OPAL_TABLE_WRITE (1 << OPAL_WRITE_TABLE) + __u64 flags; + __u64 priv; +}; + #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) @@ -128,5 +147,6 @@ struct opal_shadow_mbr { #define IOC_OPAL_PSID_REVERT_TPR _IOW('p', 232, struct opal_key) #define IOC_OPAL_MBR_DONE _IOW('p', 233, struct opal_mbr_done) #define IOC_OPAL_WRITE_SHADOW_MBR _IOW('p', 234, struct opal_shadow_mbr) +#define IOC_OPAL_GENERIC_TABLE_RW _IOW('p', 235, struct opal_read_write_table) #endif /* _UAPI_SED_OPAL_H */ |