#include <termios.h>
-int real_open(const char *pathname, int flags, mode_t mode);
+int real_open(const char *pathname, int flags, ...);
FILE *real_fopen(const char *path, const char *mode);
void *real_mmap(void *addr, size_t length, int prot, int flags, int fd, off_t offset);
int real_read(int fd, void *buf, size_t count);