Merge "Initial commit for usb daemon" am: b9b54e7b am: 9f249c9d

cc_binary {

    name: "usbd",

    init_rc: ["usbd.rc"],

    srcs: ["usbd.cpp"],

    shared_libs: [

        "libbase",

        "libhidlbase",

        "libhidltransport",

        "liblog",

        "libutils",

        "libhardware",

        "android.hardware.usb.gadget@1.0",

        "libcutils",

    ],

}

/*

 * Copyright (C) 2018 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.

 */

#define LOG_TAG "usbd"

#include <string>

#include <android-base/logging.h>

#include <android-base/properties.h>

#include <android/hardware/usb/gadget/1.0/IUsbGadget.h>

#define PERSISTENT_USB_CONFIG "persist.sys.usb.config"

using android::base::GetProperty;

using android::base::SetProperty;

using android::hardware::usb::gadget::V1_0::GadgetFunction;

using android::hardware::usb::gadget::V1_0::IUsbGadget;

using android::hardware::Return;

int main(int /*argc*/, char** /*argv*/) {

    android::sp<IUsbGadget> gadget = IUsbGadget::getService();

    Return<void> ret;

    if (gadget != nullptr) {

        LOG(INFO) << "Usb HAL found.";

        std::string function = GetProperty(PERSISTENT_USB_CONFIG, "");

        if (function == "adb") {

            LOG(INFO) << "peristent prop is adb";

            SetProperty("ctl.start", "adbd");

            ret = gadget->setCurrentUsbFunctions(static_cast<uint64_t>(GadgetFunction::ADB),

                                                 nullptr, 0);

        } else {

            LOG(INFO) << "Signal MTP to enable default functions";

            ret = gadget->setCurrentUsbFunctions(static_cast<uint64_t>(GadgetFunction::MTP),

                                                 nullptr, 0);

        }

        if (!ret.isOk()) LOG(ERROR) << "Error while invoking usb hal";

    } else {

        LOG(INFO) << "Usb HAL not found";

    }

    exit(0);

}

service usbd /system/bin/usbd

    class late_start

    oneshot

    user root

    group root usb