1/*
2 * Copyright (C) 2008 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 <stdlib.h>
18#include <errno.h>
19#include <fcntl.h>
20
21
22#include <netinet/in.h>
23#include <arpa/inet.h>
24
25#define LOG_TAG "UsbController"
26#include <cutils/log.h>
27
28#include "UsbController.h"
29
30
31UsbController::UsbController() {
32}
33
34UsbController::~UsbController() {
35}
36
37int UsbController::startRNDIS() {
38    LOGD("Usb RNDIS start");
39    return enableRNDIS(true);
40}
41
42int UsbController::stopRNDIS() {
43    LOGD("Usb RNDIS stop");
44    return enableRNDIS(false);
45}
46
47int UsbController::enableRNDIS(bool enable) {
48    char value[20];
49    int fd = open("/sys/class/usb_composite/rndis/enable", O_RDWR);
50    int count = snprintf(value, sizeof(value), "%d\n", (enable ? 1 : 0));
51    write(fd, value, count);
52    close(fd);
53    return 0;
54}
55
56bool UsbController::isRNDISStarted() {
57    char value=0;
58    int fd = open("/sys/class/usb_composite/rndis/enable", O_RDWR);
59    read(fd, &value, 1);
60    close(fd);
61    return (value == '1' ? true : false);
62}
63