7464ac9bd7
NOTE: this is only compiled into products with PRODUCT_IOT=true.
Introduce BootActions that a developer can provide to manipulate IO
before the android framework comes up on boot.
We will look for a configuration file at /oem/app/etc/boot_action.conf and
expect it to tell us the name of a shared library. We will then fetch
this library from /oem/app/lib/${arch}/ and load it. We expect it to export
boot_action_init(), boot_action_shutdown(), and optionally
boot_action_start_part(int partNumber, int playNumber).
We will then call boot_action_init() during boot after PeripheralManager
is up and call boot_action_shutdown() when the android framework is up
and we are going to start loading APKs.
We will also call boot_action_start_part(*) when each part of the boot
animation is started, use this if you want to synchronize the boot
action and the boot animation.
Boot actions run in a restricted environment and in general can only
make calls to PeripheralManager.
Bug: 37992717
Test: Pushed to local imx7d to test boot actions, pushed to bullhead test that animation+sound still works.
Change-Id: I9e53a17567f8028ea84486d637e1d231ee1125e1
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "IotBootAnimation"
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#include <android-base/file.h>
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#include <binder/IPCThreadState.h>
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#include <binder/IServiceManager.h>
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#include <binder/ProcessState.h>
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#include <cutils/properties.h>
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#include <sys/resource.h>
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#include <utils/Log.h>
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#include <utils/threads.h>
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#include <BootAnimation.h>
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#include "BootAction.h"
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#include "BootAnimationUtil.h"
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using namespace android;
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using android::base::ReadFileToString;
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// Create a typedef for readability.
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typedef android::BootAnimation::Animation Animation;
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namespace {
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class BootActionAnimationCallbacks : public android::BootAnimation::Callbacks {public:
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void init(const Vector<Animation::Part>&) override {
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// Create and initialize BootActions if we have a boot_action.conf.
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std::string bootActionConf;
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if (ReadFileToString("/oem/app/etc/boot_action.conf", &bootActionConf)) {
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mBootAction = new BootAction();
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if (!mBootAction->init("/oem/app/lib", bootActionConf)) {
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mBootAction = NULL;
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}
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} else {
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ALOGI("No boot actions specified");
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}
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};
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void playPart(int partNumber, const Animation::Part&, int playNumber) override {
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if (mBootAction != nullptr) {
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mBootAction->startPart(partNumber, playNumber);
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}
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};
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void shutdown() override {
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if (mBootAction != nullptr) {
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mBootAction->shutdown();
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// Give it two seconds to shut down.
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sleep(2);
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mBootAction = nullptr;
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}
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};
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private:
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sp<BootAction> mBootAction = nullptr;
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};
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} // namespace
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int main() {
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setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_DISPLAY);
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if (bootAnimationDisabled()) {
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ALOGI("boot animation disabled");
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return 0;
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}
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waitForSurfaceFlinger();
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sp<ProcessState> proc(ProcessState::self());
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ProcessState::self()->startThreadPool();
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sp<BootAnimation> boot = new BootAnimation(new BootActionAnimationCallbacks());
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IPCThreadState::self()->joinThreadPool();
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return 0;
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}
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