extern struct file *free_map_file;
void filesys_init (bool format);
+void filesys_done (void);
bool filesys_create (const char *name, off_t initial_size);
struct file *filesys_open (const char *name);
bool filesys_remove (const char *name);
bool filesys_list (void);
-bool filesys_dump (void);
void filesys_self_test (void);