Merge "Fix ioctl FIONREAD call parameters to use int instead of size_t"

  // The inotify will put one or several complete events.

  // Should not read part of one event.

  size_t event_len;

  int ret = ioctl(fd, FIONREAD, &event_len);

  int event_len_int;

  int ret = ioctl(fd, FIONREAD, &event_len_int);

  if (ret != 0) return -1;

  if (event_len_int < 0) return -1;

  size_t event_len = event_len_int;

  std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(INPUT_DEV_DIR), closedir);

  if (!dir) {