// We absolutely need this method broken out so that WriteInternalCoreAsync can call
// a method without having to go through buffering code that might call FlushWrite.
protected unsafe void SetLengthCore(long value)
{
Debug.Assert(value >= 0, "value >= 0");
VerifyOSHandlePosition();
FileStreamHelpers.SetLength(_fileHandle, _path, value);
if (_filePosition > value)
{
SeekCore(_fileHandle, 0, SeekOrigin.End);
}
}