#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);
int real_tcgetattr(int fd, struct termios *termios_p);
int real_tcsetattr(int fd, int optional_actions, const struct termios *termios_p);
int real_system(const char *command);
+// exec* - skipped
+int real_execve(const char *filename, char *const argv[], char *const envp[]);
+int real_chdir(const char *path);
#define open real_open
#define fopen real_fopen
#define tcgetattr real_tcgetattr
#define tcsetattr real_tcsetattr
#define system real_system
+#define execl real_execl
+#define execlp real_execlp
+#define execle real_execle
+#define execv real_execv
+#define execvp real_execvp
+#define execve real_execve
+#define chdir real_chdir