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    • 37. 发明申请
    • Enforcing a File Protection Policy by a Storage Device
    • 由存储设备执行文件保护策略
    • US20110107393A1
    • 2011-05-05
    • US12775962
    • 2010-05-07
    • Rotem SelaMichael HoltzmanAvraham Shmuel
    • Rotem SelaMichael HoltzmanAvraham Shmuel
    • G06F21/00G06F12/14
    • G06F21/6218G06F21/604G06F21/78
    • A file attribute, which is called herein “enforcement bit”, is used for each file that is stored in a storage device. If the protection particulars associated with a stored file are allowed to be changed, the enforcement bit is set to a first value, and if the protection particulars or properties are not to be changed, the enforcement bit is set to a second value. When the storage device is connected to a host device, the storage device provides to the host device protection particulars and an enforcement bit, which collectively form a “file protection policy”, for each stored file in response to a file system read command that the host device issues, in order to notify the host device of files in the storage device whose protection particulars are allowed to be changed freely, and of files whose protection particulars are not allowed to be changed by unauthorized users or devices.
    • 此处称为“执行位”的文件属性用于存储在存储设备中的每个文件。 如果与存储的文件相关联的保护细节被允许改变,则执行位被设置为第一值,并且如果不改变保护细节或属性,则执行位被设置为第二值。 当存储设备连接到主机设备时,响应于文件系统读取命令,存储设备向主机设备提供对于每个存储的文件共同形成“文件保护策略”的保护细节和执行位, 主机设备问题,以便主机设备通知其保护细节被允许自由改变的存储设备中的文件以及不允许未经授权的用户或设备改变保护细节的文件。