Marka
Reputation: 387
Finding length of data block in sparse file
How can I find length of non-zero data block in sparse file starting from some offset? Do I have to make some file read or OS can read that information from some metadata which can be cached? I'm using Windows OS and Visual Studio C++.
Upvotes: 0
Views: 289
Answers (1)
atzz
Reputation: 18010
You can use DeviceIoControl with FSCTL_QUERY_ALLOCATED_RANGES command.
Upvotes: 1
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