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    • 1. 发明申请
    • Security model for common multiplexed transactional logs
    • 常用复用事务日志的安全模型
    • US20080208924A1
    • 2008-08-28
    • US11711990
    • 2007-02-28
    • Dexter P. BradshawWilliam R. TiptonDana GroffZoheb Vacheri
    • Dexter P. BradshawWilliam R. TiptonDana GroffZoheb Vacheri
    • G06F12/16
    • G06F21/6218G06F9/455
    • A security model is provided in a transactional logging infrastructure that is arranged as a protected subsystem built on an underlying secure file system. Files in the underlying file system used by virtual log streams are protected from direct user writes, and are written-to only through the protected subsystem that is brokered by a machine-wide principal so that virtual log files sharing the same multiplexed physical log are kept secure from each other. Log file handles and user- and kernel-mode objects are exposed to log clients through interfaces using consistent security semantics for both dedicated and virtual logs. Log clients are agnostic of the underlying secure file system and can only manipulate file system containers—abstract objects that implement the physical log and used to virtualize the file system by normalizing input/output operations—by using the interfaces brokered by the principal in the protected subsystem.
    • 在事务日志记录基础设施中提供安全模型,该基础架构被安排为构建在底层安全文件系统上的受保护子系统。 虚拟日志流所使用的基础文件系统中的文件受到保护,不受直接用户写入的影响,只能通过由机器范围的主体中介的受保护子系统进行写入,以便共享共享多个物理日志的虚拟日志文件 相互安全 日志文件句柄和用户和内核模式对象通过使用一致的安全语义的专用和虚拟日志的接口向日志客户端公开。 日志客户端与底层安全文件系统无关,只能操纵文件系统容器 - 通过归一化输入/输出操作来实现物理日志并用于虚拟化文件系统的抽象对象 - 通过使用受保护的主体代理的接口 子系统。
    • 2. 发明授权
    • Security model for common multiplexed transactional logs
    • 常用复用事务日志的安全模型
    • US08321667B2
    • 2012-11-27
    • US11711990
    • 2007-02-28
    • Dexter P. BradshawWilliam R. TiptonDana GroffZoheb Lester Alexander Vacheri
    • Dexter P. BradshawWilliam R. TiptonDana GroffZoheb Lester Alexander Vacheri
    • H04L29/06G06F17/00
    • G06F21/6218G06F9/455
    • A security model is provided in a transactional logging infrastructure that is arranged as a protected subsystem built on an underlying secure file system. Files in the underlying file system used by virtual log streams are protected from direct user writes, and are written-to only through the protected subsystem that is brokered by a machine-wide principal so that virtual log files sharing the same multiplexed physical log are kept secure from each other. Log file handles and user- and kernel-mode objects are exposed to log clients through interfaces using consistent security semantics for both dedicated and virtual logs. Log clients are agnostic of the underlying secure file system and can only manipulate file system containers—abstract objects that implement the physical log and used to virtualize the file system by normalizing input/output operations—by using the interfaces brokered by the principal in the protected subsystem.
    • 在事务日志记录基础设施中提供安全模型,该基础架构被安排为构建在底层安全文件系统上的受保护子系统。 虚拟日志流所使用的基础文件系统中的文件受到保护,不受直接用户写入的影响,只能通过由机器范围的主体中介的受保护子系统进行写入,以便共享共享多个物理日志的虚拟日志文件 相互安全 日志文件句柄和用户和内核模式对象通过使用一致的安全语义的专用和虚拟日志的接口向日志客户端公开。 日志客户端与底层安全文件系统无关,只能操纵文件系统容器 - 通过归一化输入/输出操作来实现物理日志并用于虚拟化文件系统的抽象对象 - 通过使用受保护的主体代理的接口 子系统。
    • 3. 发明授权
    • Multi-level read caching for multiplexed transactional logging
    • 用于多重事务日志记录的多级读取缓存
    • US08074027B2
    • 2011-12-06
    • US11633248
    • 2006-12-04
    • Dexter P. BradshawWilliam R. TiptonDana Groff
    • Dexter P. BradshawWilliam R. TiptonDana Groff
    • G06F12/00
    • G06F12/0866G06F12/0897G06F2212/466
    • A transactional logging service is provided to user-mode and kernel-mode log clients by utilizing a marshalling area to buffer a set of log records that a log client assembles into a log stream. Disk I/O (input/output) functionality is then separately brokered using a kernel-mode address space for a single dedicated physical log, or virtual logs multiplexed to a single log, which is written to stable storage that contains log records from across all of the log streams. Physical log writes are handled by a shared log flush queue and physical log reads are provided by a file system cache that underlies the service. A multi-level cache hierarchy is utilized when a log client needs to access a log record. A series of caches are queried in order of increasing latency until the targeted log record is located. The target log record is only read from disk in the event that it missed at each cache in the hierarchy.
    • 通过利用编组区来缓冲日志客户端组装成日志流的一组日志记录,向用户模式和内核模式日志客户端提供事务日志记录服务。 然后,使用单个专用物理日志的内核模式地址空间或复制到单个日志的虚拟日志分别对磁盘I / O(输入/输出)功能进行操作,将其写入包含来自所有的日志记录的稳定存储 的日志流。 物理日志写入由共享日志刷新队列处理,物理日志读取由作为服务的文件系统缓存提供。 当日志客户端需要访问日志记录时,将使用多级缓存层次结构。 一系列缓存按照延迟时间的顺序进行查询,直到找到目标日志记录。 只有当它在层次结构中的每个高速缓存中丢失时才会从磁盘读取目标日志记录。
    • 4. 发明申请
    • Multi-level read caching for multiplexed transactional logging
    • 用于多重事务日志记录的多级读取缓存
    • US20080133615A1
    • 2008-06-05
    • US11633248
    • 2006-12-04
    • Dexter P. BradshawWilliam R. TiptonDana Groff
    • Dexter P. BradshawWilliam R. TiptonDana Groff
    • G06F17/30
    • G06F12/0866G06F12/0897G06F2212/466
    • A transactional logging service is provided to user-mode and kernel-mode log clients by utilizing a marshalling area to buffer a set of log records that a log client assembles into a log stream. Disk I/O (input/output) functionality is then separately brokered using a kernel-mode address space for a single dedicated physical log, or virtual logs multiplexed to a single log, which is written to stable storage that contains log records from across all of the log streams. Physical log writes are handled by a shared log flush queue and physical log reads are provided by a file system cache that underlies the service. A multi-level cache hierarchy is utilized when a log client needs to access a log record. A series of caches are queried in order of increasing latency until the targeted log record is located. The target log record is only read from disk in the event that it missed at each cache in the hierarchy.
    • 通过利用编组区来缓冲日志客户端组装成日志流的一组日志记录,向用户模式和内核模式日志客户端提供事务日志记录服务。 然后,使用单个专用物理日志的内核模式地址空间或复制到单个日志的虚拟日志分别对磁盘I / O(输入/输出)功能进行操作,将其写入包含来自所有的日志记录的稳定存储 的日志流。 物理日志写入由共享日志刷新队列处理,物理日志读取由作为服务的文件系统缓存提供。 当日志客户端需要访问日志记录时,将使用多级缓存层次结构。 一系列缓存按照延迟时间的顺序进行查询,直到找到目标日志记录。 只有当它在层次结构中的每个高速缓存中丢失时才会从磁盘读取目标日志记录。