| 1441 | } |
| 1442 | |
| 1443 | ssize_t |
| 1444 | lwip_sendmsg(int s, const struct msghdr *msg, int flags) |
| 1445 | { |
| 1446 | struct lwip_sock *sock; |
| 1447 | #if LWIP_TCP |
| 1448 | u8_t write_flags; |
| 1449 | size_t written; |
| 1450 | #endif |
| 1451 | err_t err = ERR_OK; |
| 1452 | |
| 1453 | sock = get_socket(s); |
| 1454 | if (!sock) { |
| 1455 | return -1; |
| 1456 | } |
| 1457 | |
| 1458 | LWIP_ERROR("lwip_sendmsg: invalid msghdr", msg != NULL, |
| 1459 | sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;); |
| 1460 | LWIP_ERROR("lwip_sendmsg: invalid msghdr iov", msg->msg_iov != NULL, |
| 1461 | sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;); |
| 1462 | LWIP_ERROR("lwip_sendmsg: maximum iovs exceeded", (msg->msg_iovlen > 0) && (msg->msg_iovlen <= IOV_MAX), |
| 1463 | sock_set_errno(sock, EMSGSIZE); done_socket(sock); return -1;); |
| 1464 | LWIP_ERROR("lwip_sendmsg: unsupported flags", (flags & ~(MSG_DONTWAIT | MSG_MORE)) == 0, |
| 1465 | sock_set_errno(sock, EOPNOTSUPP); done_socket(sock); return -1;); |
| 1466 | |
| 1467 | LWIP_UNUSED_ARG(msg->msg_control); |
| 1468 | LWIP_UNUSED_ARG(msg->msg_controllen); |
| 1469 | LWIP_UNUSED_ARG(msg->msg_flags); |
| 1470 | |
| 1471 | if (NETCONNTYPE_GROUP(netconn_type(sock->conn)) == NETCONN_TCP) { |
| 1472 | #if LWIP_TCP |
| 1473 | write_flags = (u8_t)(NETCONN_COPY | |
| 1474 | ((flags & MSG_MORE) ? NETCONN_MORE : 0) | |
| 1475 | ((flags & MSG_DONTWAIT) ? NETCONN_DONTBLOCK : 0)); |
| 1476 | |
| 1477 | written = 0; |
| 1478 | err = netconn_write_vectors_partly(sock->conn, (struct netvector *)msg->msg_iov, (u16_t)msg->msg_iovlen, write_flags, &written); |
| 1479 | sock_set_errno(sock, err_to_errno(err)); |
| 1480 | done_socket(sock); |
| 1481 | /* casting 'written' to ssize_t is OK here since the netconn API limits it to SSIZE_MAX */ |
| 1482 | return (err == ERR_OK ? (ssize_t)written : -1); |
| 1483 | #else /* LWIP_TCP */ |
| 1484 | sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| 1485 | done_socket(sock); |
| 1486 | return -1; |
| 1487 | #endif /* LWIP_TCP */ |
| 1488 | } |
| 1489 | /* else, UDP and RAW NETCONNs */ |
| 1490 | #if LWIP_UDP || LWIP_RAW |
| 1491 | { |
| 1492 | struct netbuf chain_buf; |
| 1493 | int i; |
| 1494 | ssize_t size = 0; |
| 1495 | |
| 1496 | LWIP_UNUSED_ARG(flags); |
| 1497 | LWIP_ERROR("lwip_sendmsg: invalid msghdr name", (((msg->msg_name == NULL) && (msg->msg_namelen == 0)) || |
| 1498 | IS_SOCK_ADDR_LEN_VALID(msg->msg_namelen)), |
| 1499 | sock_set_errno(sock, err_to_errno(ERR_ARG)); done_socket(sock); return -1;); |
| 1500 | |