+struct fxp_xfer *xfer_upload_init(struct fxp_handle *fh, uint64 offset);
+int xfer_upload_ready(struct fxp_xfer *xfer);
+void xfer_upload_data(struct fxp_xfer *xfer, char *buffer, int len);
+int xfer_upload_gotpkt(struct fxp_xfer *xfer, struct sftp_packet *pktin);
+
+int xfer_done(struct fxp_xfer *xfer);