/* * Copyright (C) 2008 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 <stdlib.h> #include <errno.h> #include <fcntl.h> #include <netinet/in.h> #include <arpa/inet.h> #define LOG_TAG "UsbController" #include <cutils/log.h> #include "UsbController.h" UsbController::UsbController() { } UsbController::~UsbController() { } int UsbController::startRNDIS() { LOGD("Usb RNDIS start"); return enableRNDIS(true); } int UsbController::stopRNDIS() { LOGD("Usb RNDIS stop"); return enableRNDIS(false); } int UsbController::enableRNDIS(bool enable) { char value[20]; int fd = open("/sys/class/usb_composite/rndis/enable", O_RDWR); int count = snprintf(value, sizeof(value), "%d\n", (enable ? 1 : 0)); write(fd, value, count); close(fd); return 0; } bool UsbController::isRNDISStarted() { char value=0; int fd = open("/sys/class/usb_composite/rndis/enable", O_RDWR); read(fd, &value, 1); close(fd); return (value == '1' ? true : false); }