Extend Single User Mode (SUM) support in sed-opal.#528
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Extend Single User Mode (SUM) support in sed-opal.#528blktests-ci[bot] wants to merge 6 commits intolinus-master_basefrom
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This adds the 'Reactivate' method as described in the "TCG Storage Opal SSC Feature Set: Single User Mode" document (ch. 3.1.1.1). The method enables switching an already active SED OPAL2 device, with appropriate firmware support for Single User Mode (SUM), to or from SUM. Signed-off-by: Ondrej Kozina <[email protected]>
IOC_OPAL_LR_SETUP is used to set up a locking range entirely under a single authority (usually Admin1), but for Single User Mode (SUM), the permissions for attributes (RangeStart, RangeLength) and (ReadLockEnable, WriteLockEnable, ReadLocked, WriteLocked) may be split between two different authorities. Typically, it is Admin1 for the former and the User associated with the LockingRange in SUM for the latter. This commit only splits the internals in preparation for the introduction of separate ioctls for setting RangeStart, RangeLength and the rest using new ioctl calls. Signed-off-by: Ondrej Kozina <[email protected]>
This ioctl is used to set up locking range start (offset) and locking range length attributes only. In Single User Mode (SUM), if the RangeStartRangeLengthPolicy parameter is set in the 'Reactivate' method, only Admin authority maintains the locking range length and start (offset) attributes of Locking objects set up for SUM. All other attributes from struct opal_user_lr_setup (RLE - read locking enabled, WLE - write locking enabled) shall remain in possession of the User authority associated with the Locking object set for SUM. Therefore, we need a separate function for setting up locking range start and locking range length because it may require two different authorities (and sessions) if the RangeStartRangeLengthPolicy attribute is set. With the IOC_OPAL_LR_SET_START_LEN ioctl, the opal_user_lr_setup members 'RLE' and 'WLE' of the ioctl argument are ignored. The RangeStartRangeLengthPolicy attribute is described in ch. 3.1.1.1.1.2 of the TCG Storage Opal SSC Feature Set: Single User Mode document. Signed-off-by: Ondrej Kozina <[email protected]>
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This ioctl is used to set up RLE (read lock enabled) and WLE (write lock enabled) parameters of the Locking object. In Single User Mode (SUM), if the RangeStartRangeLengthPolicy parameter is set in the 'Reactivate' method, only Admin authority maintains the locking range length and start (offset) attributes of Locking objects set up for SUM. All other attributes from struct opal_user_lr_setup (RLE - read locking enabled, WLE - write locking enabled) shall remain in possession of the User authority associated with the Locking object set for SUM. With the IOC_OPAL_ENABLE_DISABLE_LR ioctl, the opal_user_lr_setup members 'range_start' and 'range_length' of the ioctl argument are ignored. The RangeStartRangeLengthPolicy attribute is described in ch. 3.1.1.1.1.2 of the TCG Storage Opal SSC Feature Set: Single User Mode document. Signed-off-by: Ondrej Kozina <[email protected]>
Change the column parameter in response_get_column() from u8 to u64 to support the full range of column identifiers. Signed-off-by: Ondrej Kozina <[email protected]>
This adds a function for retrieving the set of Locking objects enabled for Single User Mode (SUM) and the value of the RangeStartRangeLengthPolicy parameter. Signed-off-by: Ondrej Kozina <[email protected]>
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Pull request for series with
subject: Extend Single User Mode (SUM) support in sed-opal.
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1049076