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/*
* Copyright (C) 2017 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 "BootAction.h"
#define LOG_TAG "BootAction"
#include <dlfcn.h>
#include <pio/peripheral_manager_client.h>
#include <utils/Log.h>
namespace android {
BootAction::~BootAction() {
if (mLibHandle != nullptr) {
dlclose(mLibHandle);
}
}
bool BootAction::init(const std::string& libraryPath,
const std::unique_ptr<BootParameters>& bootParameters) {
APeripheralManagerClient* client = nullptr;
ALOGD("Connecting to peripheralmanager");
// Wait for peripheral manager to come up.
while (client == nullptr) {
client = APeripheralManagerClient_new();
if (client == nullptr) {
ALOGV("peripheralmanager is not up, sleeping before we check again.");
usleep(250000);
}
}
ALOGD("Peripheralmanager is up.");
APeripheralManagerClient_delete(client);
ALOGI("Loading boot action %s", libraryPath.c_str());
mLibHandle = dlopen(libraryPath.c_str(), RTLD_NOW);
if (mLibHandle == nullptr) {
ALOGE("Unable to load library at %s :: %s",
libraryPath.c_str(), dlerror());
return false;
}
void* loaded = nullptr;
if (!loadSymbol("boot_action_init", &loaded) || loaded == nullptr) {
return false;
}
mLibInit = reinterpret_cast<libInit>(loaded);
loaded = nullptr;
if (!loadSymbol("boot_action_shutdown", &loaded) || loaded == nullptr) {
return false;
}
mLibShutdown = reinterpret_cast<libShutdown>(loaded);
// StartPart is considered optional, if it isn't exported by the library
// we will still call init and shutdown.
loaded = nullptr;
if (!loadSymbol("boot_action_start_part", &loaded) || loaded == nullptr) {
ALOGI("No boot_action_start_part found, action will not be told when "
"Animation parts change.");
} else {
mLibStartPart = reinterpret_cast<libStartPart>(loaded);
}
// SilentBoot is considered optional, if it isn't exported by the library
// and the boot is silent, no method is called.
loaded = nullptr;
if (!loadSymbol("boot_action_silent_boot", &loaded) || loaded == nullptr) {
ALOGW("No boot_action_silent_boot found, boot action will not be "
"executed during a silent boot.");
} else {
mLibSilentBoot = reinterpret_cast<libInit>(loaded);
}
bool result = true;
const auto& parameters = bootParameters->getParameters();
if (bootParameters->isSilentBoot()) {
if (mLibSilentBoot != nullptr) {
ALOGD("Entering boot_action_silent_boot");
result = mLibSilentBoot(parameters.data(), parameters.size());
ALOGD("Returned from boot_action_silent_boot");
} else {
ALOGW("Skipping missing boot_action_silent_boot");
}
} else {
ALOGD("Entering boot_action_init");
result = mLibInit(parameters.data(), parameters.size());
ALOGD("Returned from boot_action_init");
}
return result;
}
void BootAction::startPart(int partNumber, int playNumber) {
if (mLibStartPart == nullptr) return;
ALOGD("Entering boot_action_start_part");
mLibStartPart(partNumber, playNumber);
ALOGD("Returned from boot_action_start_part");
}
void BootAction::shutdown() {
ALOGD("Entering boot_action_shutdown");
mLibShutdown();
ALOGD("Returned from boot_action_shutdown");
}
bool BootAction::loadSymbol(const char* symbol, void** loaded) {
*loaded = dlsym(mLibHandle, symbol);
if (*loaded == nullptr) {
ALOGE("Unable to load symbol : %s :: %s", symbol, dlerror());
return false;
}
return true;
}
} // namespace android
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