138 is_closed(int fd)  in is_closed()  argument
144     FD_SET(fd, &readset);  in is_closed()
148     if (select(fd+1, &readset, NULL, NULL, &tv) < 0) {  in is_closed()
427     int fd;  in iperf_dump_fdset()  local
432     for (fd = 0; fd < nfds; ++fd) {  in iperf_dump_fdset()
433         if (FD_ISSET(fd, fds)) {  in iperf_dump_fdset()
436 	    fprintf(fp, "%d", fd);  in iperf_dump_fdset()
452     int fd;  in daemon()  local
494     if (!noclose && (fd = open("/dev/null", O_RDWR, 0)) != -1) {  in daemon()
495 	dup2(fd, STDIN_FILENO);  in daemon()
496 	dup2(fd, STDOUT_FILENO);  in daemon()
497 	dup2(fd, STDERR_FILENO);  in daemon()
498 	if (fd > 2) {  in daemon()
499 	    close(fd);  in daemon()