int init_acquire_mutex(); /* in lock.c */
int init_read_acquire_mutex(); /* in lock.c */
int init_volcat_mutex(); /* in lock.c */
int init_acquire_mutex(); /* in lock.c */
int init_read_acquire_mutex(); /* in lock.c */
int init_volcat_mutex(); /* in lock.c */
void set_mutex_priorities(); /* in lock.c */
int next_vol_timedwait(const struct timespec *timeout); /* in lock.c */
void dblock(int why); /* in lock.c */
void set_mutex_priorities(); /* in lock.c */
int next_vol_timedwait(const struct timespec *timeout); /* in lock.c */
void dblock(int why); /* in lock.c */