| /* |
| * Copyright 2019, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "netlink_message.h" |
| |
| #include <netlink/genl/genl.h> |
| #include <netlink/msg.h> |
| |
| NetlinkMessage::NetlinkMessage() { |
| } |
| |
| NetlinkMessage::NetlinkMessage(NetlinkMessage&& other) { |
| std::swap(mMessage, other.mMessage); |
| } |
| |
| NetlinkMessage::~NetlinkMessage() { |
| if (mMessage) { |
| nlmsg_free(mMessage); |
| mMessage = nullptr; |
| } |
| } |
| |
| NetlinkMessage& NetlinkMessage::operator=(NetlinkMessage&& other) { |
| if (mMessage) { |
| nlmsg_free(mMessage); |
| mMessage = nullptr; |
| } |
| std::swap(mMessage, other.mMessage); |
| return *this; |
| } |
| |
| bool NetlinkMessage::initGeneric(int family, uint8_t command, int version) { |
| if (mMessage) { |
| return false; |
| } |
| |
| mMessage = nlmsg_alloc(); |
| if (!mMessage) { |
| return false; |
| } |
| |
| return genlmsg_put(mMessage, NL_AUTO_PORT, NL_AUTO_SEQ, family, 0, |
| NLM_F_REQUEST, command, version) != nullptr; |
| } |
| |
| uint32_t NetlinkMessage::getSeqNum() const { |
| return nlmsg_hdr(mMessage)->nlmsg_seq; |
| } |