1/* 2 * Copyright (C) 2016 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#include <android-base/logging.h> 18#include <cutils/properties.h> 19#include <dirent.h> 20#include <errno.h> 21#include <fcntl.h> 22#include <linux/usb/ch9.h> 23#include <stdio.h> 24#include <stdlib.h> 25#include <string.h> 26#include <sys/stat.h> 27#include <sys/ioctl.h> 28#include <sys/types.h> 29#include <sys/endian.h> 30#include <unistd.h> 31 32#include "MtpDevHandle.h" 33 34namespace android { 35 36constexpr char mtp_dev_path[] = "/dev/mtp_usb"; 37 38MtpDevHandle::MtpDevHandle() 39 : mFd(-1) {}; 40 41MtpDevHandle::~MtpDevHandle() {} 42 43int MtpDevHandle::read(void *data, size_t len) { 44 return ::read(mFd, data, len); 45} 46 47int MtpDevHandle::write(const void *data, size_t len) { 48 return ::write(mFd, data, len); 49} 50 51int MtpDevHandle::receiveFile(mtp_file_range mfr, bool) { 52 return ioctl(mFd, MTP_RECEIVE_FILE, reinterpret_cast<unsigned long>(&mfr)); 53} 54 55int MtpDevHandle::sendFile(mtp_file_range mfr) { 56 return ioctl(mFd, MTP_SEND_FILE_WITH_HEADER, reinterpret_cast<unsigned long>(&mfr)); 57} 58 59int MtpDevHandle::sendEvent(mtp_event me) { 60 return ioctl(mFd, MTP_SEND_EVENT, reinterpret_cast<unsigned long>(&me)); 61} 62 63int MtpDevHandle::start(bool /* ptp */) { 64 mFd.reset(TEMP_FAILURE_RETRY(open(mtp_dev_path, O_RDWR))); 65 if (mFd == -1) return -1; 66 return 0; 67} 68 69void MtpDevHandle::close() { 70 mFd.reset(); 71} 72 73} // namespace android 74