F_DUPFD_CLOEXEC
fd2 = fcntl(fd, F_DUPFD_CLOEXEC, 10);
(ttyfd = fcntl(i, F_DUPFD_CLOEXEC, 10)) < 0) {
if ((i = fcntl(ttyfd, F_DUPFD_CLOEXEC, 10)) < 0) {
if ((i = fcntl(fd, F_DUPFD_CLOEXEC, 10)) == -1) {
fd = fcntl(fd_u, F_DUPFD_CLOEXEC, 0);
return (kern_fcntl(td, args->fd, F_DUPFD_CLOEXEC, args->arg));
case F_DUPFD_CLOEXEC:
if ((fd2 = fcntl(fd1, F_DUPFD_CLOEXEC, 10)) < 0)