public static void RemoveIntegrityStream(FileInfo file)
{
if (!ReFS.HasIntegrityStream(file))
{
return;
} //cancel if file has no integrity stream
using (var handle = NativeMethods.CreateFile(file.FullName, NativeMethods.GENERIC_READ | NativeMethods.GENERIC_WRITE, FileShare.None, IntPtr.Zero, FileMode.Open, 0, IntPtr.Zero)) {
RemoveIntegrityStream(handle);
}
}
public static void RemoveIntegrityStream(SafeFileHandle handle)
{
if (!ReFS.HasIntegrityStream(handle))
{
return;
} //cancel if file has no integrity stream
var oldInfo = new NativeMethods.FSCTL_GET_INTEGRITY_INFORMATION_BUFFER();
var oldInfoSizeReturn = 0;
if (!NativeMethods.DeviceIoControl(handle, NativeMethods.FSCTL_GET_INTEGRITY_INFORMATION, IntPtr.Zero, 0, ref oldInfo, Marshal.SizeOf(oldInfo), out oldInfoSizeReturn, IntPtr.Zero))
{
try {
throw new Win32Exception();
} catch (Win32Exception ex) {
throw new InvalidOperationException(ex.Message, ex);
}
}
if (oldInfo.ChecksumAlgorithm == NativeMethods.CHECKSUM_TYPE_NONE)
{
return;
} //already done
var newInfo = new NativeMethods.FSCTL_SET_INTEGRITY_INFORMATION_BUFFER()
{
ChecksumAlgorithm = NativeMethods.CHECKSUM_TYPE_NONE, Flags = oldInfo.Flags
};
var newInfoSizeReturn = 0;
if (!NativeMethods.DeviceIoControl(handle, NativeMethods.FSCTL_SET_INTEGRITY_INFORMATION, ref newInfo, Marshal.SizeOf(newInfo), IntPtr.Zero, 0, out newInfoSizeReturn, IntPtr.Zero))
{
try {
throw new Win32Exception();
} catch (Win32Exception ex) {
throw new InvalidOperationException(ex.Message, ex);
}
}
}