int forkfilter(struct transfer *transfer);
void transferputdata(struct transfer *transfer, void *buf, size_t size);
size_t transferdatasize(struct transfer *transfer);
void transferendofdata(struct transfer *transfer);
void transferprepul(struct transfer *transfer, size_t size, size_t start, size_t end, struct socket *lesk);
void transferstartul(struct transfer *transfer, struct socket *sk);
int forkfilter(struct transfer *transfer);
void transferputdata(struct transfer *transfer, void *buf, size_t size);
size_t transferdatasize(struct transfer *transfer);
void transferendofdata(struct transfer *transfer);
void transferprepul(struct transfer *transfer, size_t size, size_t start, size_t end, struct socket *lesk);
void transferstartul(struct transfer *transfer, struct socket *sk);