Method LockFile

Source/cmFileLockUnix.cxx:67–76

}

int cmFileLock::LockFile(int cmd, int type) const
{
  struct ::flock lock;
  lock.l_start = 0;
  lock.l_len = 0;                         // lock all bytes
  lock.l_pid = 0;                         // unused (for F_GETLK only)
  lock.l_type = static_cast<short>(type); // exclusive lock
  lock.l_whence = SEEK_SET;
  return ::fcntl(this->File, cmd, &lock);
}