autodir
struct autodir *dir;
dir = (struct autodir *)malloc(sizeof (*dir));
register struct autodir *dir;
struct autodir *dir_tail;
struct autodir *dir_head;
struct autodir *dir;
struct autodir *dir_head;
struct autodir *dir_tail;
struct autodir *dir, *d;
struct autodir *dir_next; /* next entry */
struct autodir *dir_prev; /* prev entry */
extern struct autodir *dir_head;
extern struct autodir *dir_tail;