extern int copyfile __P((const struct vol *, const struct vol *, char *, char *, char *, struct adouble *));
extern int deletefile __P((const struct vol *, char *, int));
extern int copyfile __P((const struct vol *, const struct vol *, char *, char *, char *, struct adouble *));
extern int deletefile __P((const struct vol *, char *, int));