+long g_mmap2_raw(void *addr, size_t length, int prot, int flags,
+ int fd, off_t offset);
+long g_munmap_raw(void *addr, size_t length);
+long g_ioctl_raw(int fd, unsigned long request, ...);
+long g_close_raw(int fd);
+long g_chdir_raw(const char *path);