-int para_opendir(const char *dirname, DIR **dir, int *cwd);
-int para_fchdir(int fd);
-int mmap_full_file(const char *filename, int open_mode, void **map,
- size_t *size, int *fd_ptr);
-int para_munmap(void *start, size_t length);
-int para_write_file(const char *filename, const void *buf, size_t size);
+int adu_opendir(const char *dirname, DIR **dir, int *cwd);
+int adu_fchdir(int fd);
+int mmap_file_ro(const char *filename, void **map, size_t *size);
+int adu_munmap(void *start, size_t length);
+int adu_write_file(const char *filename, const void *buf, size_t size);
+int mkpath(const char *p, mode_t mode);