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1. 发明授权

US07673174B2 Recovering device drivers 有权
标题翻译：恢复设备驱动程序
公开(公告)号：US07673174B2
公开(公告)日：2010-03-02
申请号：US11398799
申请日：2006-04-06
申请人： Michael Swift , Brian Bershad , Hank Levy
发明人： Michael Swift , Brian Bershad , Hank Levy
IPC分类号： G06F11/00
CPC分类号： G06F11/1482
摘要： A solution to the problem of maintaining application integrity when device drivers fail. This solution employs a new mechanism, the shadow driver, which is an operating system (OS) kernel agent that monitors communication between the OS kernel and the device driver it “shadows.” When a device driver error occurs, the shadow driver acts in place of the failed device driver, intercepting and responding to calls from the OS kernel and the device driver during cleanup, unloading, reloading, and re-initialization of the failed device driver. Applications and the OS kernel are thus isolated from the failure. An initial embodiment was developed for use with the Linux™ OS and was tested with a dozen device drivers. Results demonstrate that shadow drivers successfully mask device driver failures from applications, impose minimal performance overhead, require no changes to existing applications and device drivers, and can be implemented with relatively little code.
摘要翻译：解决设备驱动程序出现故障时维护应用程序完整性的问题。该解决方案采用了一种新的机制，即影子驱动程序，它是一种操作系统（OS）内核代理，用于监视操作系统内核与其“阴影”的设备驱动程序之间的通信。当发生设备驱动程序错误时，影子驱动程序就位的故障设备驱动程序，在故障设备驱动程序的清理，卸载，重新加载和重新初始化期间拦截和响应来自操作系统内核和设备驱动程序的调用。因此，应用程序和OS内核与故障隔离。开发了用于Linux™操作系统的初始实施例，并用十几种设备驱动程序进行了测试。结果表明，影子驱动程序成功地掩盖了应用程序的设备驱动程序故障，施加了最低的性能开销，不需要更改现有应用程序和设备驱动程序，并且可以使用相对较少的代码实现。

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