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* Add some basic bind filter functions This change adds the ability to mount a a single folder or a volume inside another folder, using the bind filter API. While the API allows mounting multiple sources inside a single mount point, acting as an overlay, we disable this functionality in the ApplyFileBinding function. Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Add some tests Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Move bind filter to different package Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Use string in signature and fix getFinalPath * Properly close handle in getFinalPath() * Use string in function signature. mksyscall generates proper code to convert to utf16 * Enable TestRemoveFileBinding on Windows Server 2019 Windows Server 2019 only exposes 2 function in bindfltapi.dll: * BfRemoveMapping * BfSetupFilter Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Use windows.UTF16ToString to decode string Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Optimize bfGetMappings signature Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Skip unsupported tests on ltsc2019 Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Fix typo, add testcase * Additionally check if we can write to a read-only mount point, not just delete from it * No need to set FILE_FLAG_OPEN_REPARSE_POINT when opening a file Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Remove extra flags Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> * Add test to account for symlinks as sources Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com> --------- Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>