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sed-opal: Add command to read locking range parameters.

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It returns following attributes:

locking range start
locking range length
read lock enabled
write lock enabled
lock state (RW, RO or LK)

It can be retrieved by user authority provided the authority
was added to locking range via prior IOC_OPAL_ADD_USR_TO_LR
ioctl command. The command was extended to add user in ACE that
allows to read attributes listed above.

Signed-off-by: Ondrej Kozina <okozina@redhat.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Tested-by: Milan Broz <gmazyland@gmail.com>
Link: https://lore.kernel.org/r/20230405111223.272816-6-okozina@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Ondrej Kozina
2023-04-05 13:12:23 +02:00
committed by Jens Axboe
parent baf82b679c
commit 4c4dd04e75
3 changed files with 165 additions and 0 deletions
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11
include/uapi/linux/sed-opal.h
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@@ -78,6 +78,16 @@ struct opal_user_lr_setup {
struct opal_session_info session;
};
struct opal_lr_status {
struct opal_session_info session;
__u64 range_start;
__u64 range_length;
__u32 RLE; /* Read Lock enabled */
__u32 WLE; /* Write Lock Enabled */
__u32 l_state;
__u8 align[4];
};
struct opal_lock_unlock {
struct opal_session_info session;
__u32 l_state;
@@ -168,5 +178,6 @@ struct opal_status {
#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)
#define IOC_OPAL_GET_STATUS _IOR('p', 236, struct opal_status)
#define IOC_OPAL_GET_LR_STATUS _IOW('p', 237, struct opal_lr_status)
#endif /* _UAPI_SED_OPAL_H */