|
| 1 | +#/* |
| 2 | + * |
| 3 | + * Copyright (c) 2020 Project CHIP Authors |
| 4 | + * |
| 5 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | + * you may not use this file except in compliance with the License. |
| 7 | + * You may obtain a copy of the License at |
| 8 | + * |
| 9 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | + * |
| 11 | + * Unless required by applicable law or agreed to in writing, software |
| 12 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | + * See the License for the specific language governing permissions and |
| 15 | + * limitations under the License. |
| 16 | + */ |
| 17 | + |
| 18 | +/** |
| 19 | + * @file |
| 20 | + * This header file defines BSD socket API functions which for various |
| 21 | + * reasons have not (yet) been implemented or exposed in Zephyr. |
| 22 | + */ |
| 23 | + |
| 24 | +#pragma once |
| 25 | + |
| 26 | +#if CHIP_SYSTEM_CONFIG_USE_POSIX_SOCKETS |
| 27 | +#include <sys/select.h> |
| 28 | +#endif |
| 29 | + |
| 30 | +#if CHIP_SYSTEM_CONFIG_USE_ZEPHYR_SOCKETS |
| 31 | +#include <zephyr/net/socket.h> |
| 32 | +#endif |
| 33 | + |
| 34 | +static inline ssize_t recvmsg(int sock, struct msghdr * msg, int flags) |
| 35 | +{ |
| 36 | + // Zephyr doesn't implement recvmsg at all, but if the message vector size is > 0 we can simply |
| 37 | + // translate recvmsg to recvfrom which fills only the first of the provided buffers (although |
| 38 | + // we don't get control messages in such a case). |
| 39 | + |
| 40 | + if (msg->msg_iovlen < 1) |
| 41 | + { |
| 42 | + errno = EMSGSIZE; |
| 43 | + return -1; |
| 44 | + } |
| 45 | + |
| 46 | + ssize_t ret = recvfrom(sock, msg->msg_iov[0].iov_base, msg->msg_iov[0].iov_len, flags, static_cast<sockaddr *>(msg->msg_name), |
| 47 | + &msg->msg_namelen); |
| 48 | + |
| 49 | + if (ret >= 0) |
| 50 | + msg->msg_controllen = 0; |
| 51 | + |
| 52 | + return ret; |
| 53 | +} |
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