79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2020 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 <chrono>
|
|
#include <thread>
|
|
|
|
#include "apexd_lifecycle.h"
|
|
|
|
#include <android-base/logging.h>
|
|
#include <android-base/properties.h>
|
|
|
|
#include "apexd_utils.h"
|
|
|
|
#define LOG_TAG "apexd"
|
|
|
|
using android::base::GetProperty;
|
|
using android::base::Result;
|
|
using android::base::WaitForProperty;
|
|
|
|
namespace android {
|
|
namespace apex {
|
|
|
|
bool ApexdLifecycle::IsBooting() {
|
|
auto status = GetProperty(kApexStatusSysprop, "");
|
|
return status != kApexStatusReady && status != kApexStatusActivated;
|
|
}
|
|
|
|
void ApexdLifecycle::WaitForBootStatus(
|
|
Result<void> (&revert_fn)(const std::string&, const std::string&)) {
|
|
while (!boot_completed_) {
|
|
// Check for change in either crashing property or sys.boot_completed
|
|
// Wait for updatable_crashing property change for most of the time
|
|
// (arbitrary 10s), briefly check if boot has completed successfully,
|
|
// if not continue waiting for updatable_crashing.
|
|
// We use this strategy so that we can quickly detect if an updatable
|
|
// process is crashing.
|
|
if (WaitForProperty("sys.init.updatable_crashing", "1",
|
|
std::chrono::seconds(10))) {
|
|
auto name = GetProperty("sys.init.updatable_crashing_process_name", "");
|
|
LOG(ERROR) << "Native process '" << (name.empty() ? "[unknown]" : name)
|
|
<< "' is crashing. Attempting a revert";
|
|
auto result = revert_fn(name, "");
|
|
if (!result.ok()) {
|
|
LOG(ERROR) << "Revert failed : " << result.error();
|
|
return WaitForBootStatus();
|
|
} else {
|
|
// This should never be reached, since revert_fn should've rebooted
|
|
// the device.
|
|
LOG(FATAL) << "Active sessions were reverted, but reboot wasn't "
|
|
"triggered.";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ApexdLifecycle::WaitForBootStatus() {
|
|
while (!boot_completed_) {
|
|
std::this_thread::sleep_for(std::chrono::seconds(1));
|
|
}
|
|
}
|
|
|
|
void ApexdLifecycle::MarkBootCompleted() { boot_completed_ = true; }
|
|
|
|
} // namespace apex
|
|
} // namespace android
|