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Allocating uninitialized file blocksAllocating uninitialized file blocksPosted Apr 19, 2012 21:22 UTC (Thu) by Fowl (subscriber, #65667)In reply to: Allocating uninitialized file blocks by intgr Parent article: Allocating uninitialized file blocks
That would be the SetFileValidData function, which "is useful in very limited scenarios. " To use it requires the SE_MANAGE_VOLUME_NAME privilege (ie. raw disk access). "Applications should call SetFileValidData only on files that restrict access to those entities that have SE_MANAGE_VOLUME_NAME access. The application must ensure that the unwritten ranges of the file are never exposed, or security issues can result as follows." [Something about giving just enough rope to hang yourself / trusting programmers to know what they're doing.]
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