73d7a02dc6
The code was using encrypted_upto == 0 as an indicator that encryption has succeeded. This meant that if no encryption happened, we would reboot continually. We now set encrypted_upto to fs_size when encryption is complete. Also don't start to encrypt unless we are at 10% power. Stop when we get to 5% power. This should lead to partial encryptions only very rarely. Bug: 15513202 Change-Id: I6214d78579d1fbbe2f63ee8862473d86a89d29b3
98 lines
2.7 KiB
C++
98 lines
2.7 KiB
C++
/*
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* Copyright (C) 2014 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 "VoldCheckBattery"
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#include <cutils/log.h>
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#include <binder/IServiceManager.h>
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#include <batteryservice/IBatteryPropertiesRegistrar.h>
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using namespace android;
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namespace
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{
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// How often to check battery in seconds
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const int CHECK_PERIOD = 30;
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// How charged should the battery be (percent) to start encrypting
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const int START_THRESHOLD = 10;
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// How charged should the battery be (percent) to continue encrypting
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const int CONTINUE_THRESHOLD = 5;
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const String16 serviceName("batteryproperties");
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sp<IBinder> bs;
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sp<IBatteryPropertiesRegistrar> interface;
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bool singletonInitialized = false;
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time_t last_checked = {0};
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int last_result = 100;
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int is_battery_ok(int threshold)
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{
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time_t now = time(NULL);
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if (now == -1 || difftime(now, last_checked) < 5) {
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goto finish;
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}
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last_checked = now;
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if (!singletonInitialized) {
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bs = defaultServiceManager()->checkService(serviceName);
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if (bs == NULL) {
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SLOGE("No batteryproperties service!");
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goto finish;
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}
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interface = interface_cast<IBatteryPropertiesRegistrar>(bs);
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if (interface == NULL) {
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SLOGE("No IBatteryPropertiesRegistrar interface");
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goto finish;
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}
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singletonInitialized = true;
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}
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{
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BatteryProperty val;
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status_t status = interface
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->getProperty(android::BATTERY_PROP_CAPACITY, &val);
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if (status == NO_ERROR) {
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SLOGD("Capacity is %d", (int)val.valueInt64);
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last_result = val.valueInt64;
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} else {
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SLOGE("Failed to get battery charge");
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last_result = 100;
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}
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}
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finish:
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return last_result >= threshold;
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}
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}
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extern "C"
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{
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int is_battery_ok_to_start()
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{
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return is_battery_ok(START_THRESHOLD);
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}
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int is_battery_ok_to_continue()
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{
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return is_battery_ok(CONTINUE_THRESHOLD);
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}
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}
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