184 	int lu, fd;  in child_thread()  local
246 				lu = read(fd, buffer, min(zc.recv_skip_hint,  in child_thread()
248 				if (lu > 0) {  in child_thread()
250 						EVP_DigestUpdate(ctx, buffer, lu);  in child_thread()
252 						hash_zone(buffer, lu);  in child_thread()
253 					total += lu;  in child_thread()
255 				if (lu == 0)  in child_thread()
262 			lu = read(fd, buffer + sub, min(chunk_size - sub,  in child_thread()
264 			if (lu == 0)  in child_thread()
266 			if (lu < 0)  in child_thread()
269 				EVP_DigestUpdate(ctx, buffer + sub, lu);  in child_thread()
271 				hash_zone(buffer + sub, lu);  in child_thread()
272 			total += lu;  in child_thread()
273 			sub += lu;  in child_thread()
283 		lu = read(fd, buffer, SHA256_DIGEST_LENGTH);  in child_thread()
284 		if (lu != SHA256_DIGEST_LENGTH)  in child_thread()