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diff --git a/filesys/miniFilter/cancelSafe/ReadMe.md b/filesys/miniFilter/cancelSafe/ReadMe.md new file mode 100644 index 00000000..786b331f --- /dev/null +++ b/filesys/miniFilter/cancelSafe/ReadMe.md @@ -0,0 +1,14 @@ +CancelSafe File System Minifilter Driver +======================================== + +The CancelSafe filter is a sample minifilter that you use if you want to use cancel-safe queues. + +## Universal Compliant +This sample builds a Windows Universal driver. It uses only APIs and DDIs that are included in Windows Core. + +Design and Operation +-------------------- + +The *CancelSafe* minifilter initializes a cancel-safe queue when it is attached to a volume. When the minifilter is deployed, it monitors read operations that are passing through the I/O stack. If the read operation is being performed on a file named csqdemo.txt, it is queued onto the cancel-safe queue. Queued operations are completed after a brief pause through a separate worker thread that is running in system context. + +For more information on file system minifilter design, start with the [File System Minifilter Drivers](http://msdn.microsoft.com/en-us/library/windows/hardware/ff540402) section in the Installable File Systems Design Guide. |