1 /*- 2 * Copyright (c) 2024 Kyle Evans <kevans@FreeBSD.org> 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 */ 6 7 #include <sys/ioctl.h> 8 9 #include <assert.h> 10 #include <stdio.h> 11 #include <unistd.h> 12 13 int 14 main(void) 15 { 16 int nb; 17 18 assert(ioctl(STDIN_FILENO, FIONREAD, &nb) == 0); 19 printf("%d", nb); 20 return (0); 21 } 22