extern int osi_dnlc_enter () ;
extern struct vcache * osi_dnlc_lookup () ;
extern int osi_dnlc_remove () ;
extern int osi_dnlc_purgedp () ;
extern int osi_dnlc_purgevp () ;
extern int osi_dnlc_purge ();
extern int osi_dnlc_purgevol();
extern int osi_dnlc_init();
extern int osi_dnlc_shutdown ();


#define AFSNCNAMESIZE 36 /* multiple of 4 */
struct nc {
  unsigned int key;
  struct nc *next, *prev;
  struct vcache *dirp, *vp;
  unsigned char name[AFSNCNAMESIZE];   
  /* I think that we can avoid wasting a byte for NULL, with a 
   * a little bit of thought.
   */
};

typedef struct {
  unsigned int enters, lookups, misses, removes;
  unsigned int purgeds, purgevs, purgevols, purges;
  unsigned int cycles, lookuprace;
} dnlcstats_t;