F_GETLK           139 src/dps8/shm.c           if (fcntl(lck_fd, F_GETLK, &bflock) == 0 && bflock.l_pid > 0)
F_GETLK           265 src/dps8/shm.c       if (fcntl(fd, F_GETLK, &lock) == FALSE && lock.l_pid > 0)
F_GETLK           270 src/simh/sim_fio.c       if (fcntl(fileno(fsc), F_GETLK, &lock) == 0 && lock.l_pid > 0)