long ioread(Ioproc *io, int fd, void *a, long n);
long ioreadn(Ioproc *io, int fd, void *a, long n);
long iowrite(Ioproc *io, int fd, void *a, long n);
-int iodial(Ioproc *io, char *addr, char *local, char *dir, char *cdfp);
+int iodial(Ioproc *io, char *addr, char *local, char *dir, int *cdfp);
int iosleep(Ioproc *io, long n);
.XX
int ioflush(Ioproc *io);