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c9eb3717b4
Currently, only SCSI attached CDROMs are marked as read only SCSI devices. Write failures have been seen to occur when a read only disk is attached as a SCSI device, because the device is never queried for its write protected state and the disk is listed as writeable. This adds a new mode sense query to determine if a SCSI disk is write protected. If so, the proper BlockIO media property is set to read only, to ensure that all layers know this is a read only disk. Signed-off-by: Oliver Smith-Denny <osde@microsoft.com>