1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <net/if.h> 20 21 #include <atomic> 22 #include <string> 23 24 namespace android::netdevice::ifreqs { 25 26 /** 27 * \see useSocketDomain() 28 */ 29 extern std::atomic_int socketDomain; 30 31 /** 32 * Tries to send ioctl interface request. 33 * 34 * \param request Request type (such as SIOCGIFFLAGS) 35 * \param ifr Request data (both input and output) 36 * \return error code of the call (0 for success) 37 */ 38 int trySend(unsigned long request, struct ifreq& ifr); 39 40 /** 41 * Sends ioctl interface request. 42 * 43 * \param request Request type (such as SIOCGIFFLAGS) 44 * \param ifr Request data (both input and output) 45 * \return true if the call succeeded, false otherwise 46 */ 47 bool send(unsigned long request, struct ifreq& ifr); 48 49 /** 50 * Initializes interface request with interface name. 51 * 52 * \param ifname Interface to initialize request with 53 * \return Interface request with ifr_name field set to ifname 54 */ 55 struct ifreq fromName(const std::string& ifname); 56 57 } // namespace android::netdevice::ifreqs 58