readit
extern int readit(FILE *, struct tftphdr **, int);
size = readit(file, &dp, convert);
size = readit(file, &dp, pf->f_convert);
int (*readit)();
const caddr_t tcp_handle, int (*readit)(), int (*writeit)())
rstrm->readit = readit;
if ((len = (*(rstrm->readit))(rstrm->tcp_handle, where, len)) == -1)
if ((len_received = (*(rstrm->readit))(rstrm->tcp_handle,
int (*readit)();
int (*readit)(), int (*writeit)())
rstrm->readit = readit;
if ((len = (*(rstrm->readit))(rstrm->tcp_handle, where, len)) == -1)