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_munmap(void *addr, size_t length);
int real_read(int fd, void *buf, size_t count);
int real_ioctl(int fd, int request, void *argp);
int real_sigaction(int signum, const struct sigaction *act, struct sigaction *oldact);
#define open real_open
#define fopen real_fopen
#define mmap real_mmap
+#define munmap real_munmap
#define read real_read
#define ioctl real_ioctl
#define sigaction real_sigaction