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 <utils/Log.h> 18#include <fcntl.h> 19#include <sys/stat.h> 20#include <cutils/properties.h> 21#include <dirent.h> 22#include <errno.h> 23#include <linux/usb/ch9.h> 24#include <stdio.h> 25#include <stdlib.h> 26#include <string.h> 27#include <sys/ioctl.h> 28#include <sys/types.h> 29#include <sys/endian.h> 30#include <unistd.h> 31 32#include <android-base/logging.h> 33#include <android-base/unique_fd.h> 34#include "IMtpHandle.h" 35 36constexpr char mtp_dev_path[] = "/dev/mtp_usb"; 37 38class MtpDevHandle : public IMtpHandle { 39private: 40 android::base::unique_fd mFd; 41 42public: 43 MtpDevHandle(); 44 ~MtpDevHandle(); 45 int read(void *data, int len); 46 int write(const void *data, int len); 47 48 int receiveFile(mtp_file_range mfr, bool); 49 int sendFile(mtp_file_range mfr); 50 int sendEvent(mtp_event me); 51 52 int start(); 53 void close(); 54 55 int configure(bool ptp); 56}; 57 58MtpDevHandle::MtpDevHandle() 59 : mFd(-1) {}; 60 61MtpDevHandle::~MtpDevHandle() {} 62 63int MtpDevHandle::read(void *data, int len) { 64 return ::read(mFd, data, len); 65} 66 67int MtpDevHandle::write(const void *data, int len) { 68 return ::write(mFd, data, len); 69} 70 71int MtpDevHandle::receiveFile(mtp_file_range mfr, bool) { 72 return ioctl(mFd, MTP_RECEIVE_FILE, reinterpret_cast<unsigned long>(&mfr)); 73} 74 75int MtpDevHandle::sendFile(mtp_file_range mfr) { 76 return ioctl(mFd, MTP_SEND_FILE_WITH_HEADER, reinterpret_cast<unsigned long>(&mfr)); 77} 78 79int MtpDevHandle::sendEvent(mtp_event me) { 80 return ioctl(mFd, MTP_SEND_EVENT, reinterpret_cast<unsigned long>(&me)); 81} 82 83int MtpDevHandle::start() { 84 mFd = android::base::unique_fd(TEMP_FAILURE_RETRY(open(mtp_dev_path, O_RDWR))); 85 if (mFd == -1) return -1; 86 return 0; 87} 88 89void MtpDevHandle::close() { 90 mFd.reset(); 91} 92 93int MtpDevHandle::configure(bool) { 94 // Nothing to do, driver can configure itself 95 return 0; 96} 97 98IMtpHandle *get_mtp_handle() { 99 return new MtpDevHandle(); 100} 101