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User cancel during file writing

Posted: 12/18/2013 10:19:23
by Richard Hauer (Basic support level)
Joined: 12/05/2013
Posts: 26

If I am writing a large file the WriteFile event is raised many times, and the process may take some time.

During that time a user may cancel the operation (or pause in Windows 8).

Is there a way to detect these actions? It seems the CloseFile event is raised as normal in this case.

Posted: 12/18/2013 10:45:16
by Volodymyr Zinin (Team)

It's safe situation for CBFS when a process which is originator of any requests, currently being processed by file system, is terminated. In this case the requests that are already being processed in the CBFS callbacks should be processed by your code as usually.

> Is there a way to detect these actions?
CBFS doesn't provide any API for it.
Posted: 12/18/2013 10:49:47
by Eugene Mayevski (Team)

Actually it's Explorer that lets you pause or cancel its operations. Such user-mode actions are not reflected on kernel-mode level in any special way.

Sincerely yours
Eugene Mayevski



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