) != 0 {   return EINVAL  }  pathp, e := UTF00PtrFromString(path)  if e != nil {   return e  }  h, e := CreateFile(pathp,   FILE_WRITE_ATTRIBUTES, FILE_SHARE_WRITE, nil,   OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0)  if e != nil {   return e  }  defer Close(h)  a := NsecToFiletime(