| /* |
| * 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. |
| */ |
| |
| package com.android.settingslib.development; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.os.SystemProperties; |
| |
| import androidx.annotation.VisibleForTesting; |
| import androidx.localbroadcastmanager.content.LocalBroadcastManager; |
| import androidx.preference.ListPreference; |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.settingslib.R; |
| |
| public abstract class AbstractLogdSizePreferenceController extends |
| DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener { |
| public static final String ACTION_LOGD_SIZE_UPDATED = "com.android.settingslib.development." |
| + "AbstractLogdSizePreferenceController.LOGD_SIZE_UPDATED"; |
| public static final String EXTRA_CURRENT_LOGD_VALUE = "CURRENT_LOGD_VALUE"; |
| |
| @VisibleForTesting |
| static final String LOW_RAM_CONFIG_PROPERTY_KEY = "ro.config.low_ram"; |
| private static final String SELECT_LOGD_SIZE_KEY = "select_logd_size"; |
| @VisibleForTesting |
| static final String SELECT_LOGD_SIZE_PROPERTY = "persist.logd.size"; |
| static final String SELECT_LOGD_TAG_PROPERTY = "persist.log.tag"; |
| // Tricky, isLoggable only checks for first character, assumes silence |
| static final String SELECT_LOGD_TAG_SILENCE = "Settings"; |
| @VisibleForTesting |
| static final String SELECT_LOGD_SNET_TAG_PROPERTY = "persist.log.tag.snet_event_log"; |
| private static final String SELECT_LOGD_RUNTIME_SNET_TAG_PROPERTY = "log.tag.snet_event_log"; |
| private static final String SELECT_LOGD_DEFAULT_SIZE_PROPERTY = "ro.logd.size"; |
| @VisibleForTesting |
| static final String SELECT_LOGD_DEFAULT_SIZE_VALUE = "262144"; |
| private static final String SELECT_LOGD_SVELTE_DEFAULT_SIZE_VALUE = "65536"; |
| // 32768 is merely a menu marker, 64K is our lowest log buffer size we replace it with. |
| @VisibleForTesting |
| static final String SELECT_LOGD_MINIMUM_SIZE_VALUE = "65536"; |
| static final String SELECT_LOGD_OFF_SIZE_MARKER_VALUE = "32768"; |
| @VisibleForTesting |
| static final String DEFAULT_SNET_TAG = "I"; |
| |
| private ListPreference mLogdSize; |
| |
| public AbstractLogdSizePreferenceController(Context context) { |
| super(context); |
| } |
| |
| @Override |
| public String getPreferenceKey() { |
| return SELECT_LOGD_SIZE_KEY; |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| super.displayPreference(screen); |
| if (isAvailable()) { |
| mLogdSize = (ListPreference) screen.findPreference(SELECT_LOGD_SIZE_KEY); |
| } |
| } |
| |
| @Override |
| public boolean onPreferenceChange(Preference preference, Object newValue) { |
| if (preference == mLogdSize) { |
| writeLogdSizeOption(newValue); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| public void enablePreference(boolean enabled) { |
| if (isAvailable()) { |
| mLogdSize.setEnabled(enabled); |
| } |
| } |
| |
| private String defaultLogdSizeValue() { |
| String defaultValue = SystemProperties.get(SELECT_LOGD_DEFAULT_SIZE_PROPERTY); |
| if ((defaultValue == null) || (defaultValue.length() == 0)) { |
| if (SystemProperties.get("ro.config.low_ram").equals("true")) { |
| defaultValue = SELECT_LOGD_SVELTE_DEFAULT_SIZE_VALUE; |
| } else { |
| defaultValue = SELECT_LOGD_DEFAULT_SIZE_VALUE; |
| } |
| } |
| return defaultValue; |
| } |
| |
| public void updateLogdSizeValues() { |
| if (mLogdSize != null) { |
| String currentTag = SystemProperties.get(SELECT_LOGD_TAG_PROPERTY); |
| String currentValue = SystemProperties.get(SELECT_LOGD_SIZE_PROPERTY); |
| if ((currentTag != null) && currentTag.startsWith(SELECT_LOGD_TAG_SILENCE)) { |
| currentValue = SELECT_LOGD_OFF_SIZE_MARKER_VALUE; |
| } |
| LocalBroadcastManager.getInstance(mContext).sendBroadcastSync( |
| new Intent(ACTION_LOGD_SIZE_UPDATED) |
| .putExtra(EXTRA_CURRENT_LOGD_VALUE, currentValue)); |
| if ((currentValue == null) || (currentValue.length() == 0)) { |
| currentValue = defaultLogdSizeValue(); |
| } |
| String[] values = mContext.getResources() |
| .getStringArray(R.array.select_logd_size_values); |
| String[] titles = mContext.getResources() |
| .getStringArray(R.array.select_logd_size_titles); |
| int index = 2; // punt to second entry if not found |
| if (SystemProperties.get("ro.config.low_ram").equals("true")) { |
| mLogdSize.setEntries(R.array.select_logd_size_lowram_titles); |
| titles = mContext.getResources() |
| .getStringArray(R.array.select_logd_size_lowram_titles); |
| index = 1; |
| } |
| String[] summaries = mContext.getResources() |
| .getStringArray(R.array.select_logd_size_summaries); |
| for (int i = 0; i < titles.length; i++) { |
| if (currentValue.equals(values[i]) |
| || currentValue.equals(titles[i])) { |
| index = i; |
| break; |
| } |
| } |
| mLogdSize.setValue(values[index]); |
| mLogdSize.setSummary(summaries[index]); |
| } |
| } |
| |
| public void writeLogdSizeOption(Object newValue) { |
| boolean disable = (newValue != null) && |
| (newValue.toString().equals(SELECT_LOGD_OFF_SIZE_MARKER_VALUE)); |
| String currentTag = SystemProperties.get(SELECT_LOGD_TAG_PROPERTY); |
| if (currentTag == null) { |
| currentTag = ""; |
| } |
| // filter clean and unstack all references to our setting |
| String newTag = currentTag.replaceAll( |
| ",+" + SELECT_LOGD_TAG_SILENCE, "").replaceFirst( |
| "^" + SELECT_LOGD_TAG_SILENCE + ",*", "").replaceAll( |
| ",+", ",").replaceFirst( |
| ",+$", ""); |
| if (disable) { |
| newValue = SELECT_LOGD_MINIMUM_SIZE_VALUE; |
| // Make sure snet_event_log get through first, but do not override |
| String snetValue = SystemProperties.get(SELECT_LOGD_SNET_TAG_PROPERTY); |
| if ((snetValue == null) || (snetValue.length() == 0)) { |
| snetValue = SystemProperties.get(SELECT_LOGD_RUNTIME_SNET_TAG_PROPERTY); |
| if ((snetValue == null) || (snetValue.length() == 0)) { |
| SystemProperties.set(SELECT_LOGD_SNET_TAG_PROPERTY, DEFAULT_SNET_TAG); |
| } |
| } |
| // Silence all log sources, security logs notwithstanding |
| if (newTag.length() != 0) { |
| newTag = "," + newTag; |
| } |
| // Stack settings, stack to help preserve original value |
| newTag = SELECT_LOGD_TAG_SILENCE + newTag; |
| } |
| if (!newTag.equals(currentTag)) { |
| SystemProperties.set(SELECT_LOGD_TAG_PROPERTY, newTag); |
| } |
| String defaultValue = defaultLogdSizeValue(); |
| final String size = ((newValue != null) && (newValue.toString().length() != 0)) ? |
| newValue.toString() : defaultValue; |
| SystemProperties.set(SELECT_LOGD_SIZE_PROPERTY, defaultValue.equals(size) ? "" : size); |
| SystemProperties.set("ctl.start", "logd-reinit"); |
| SystemPropPoker.getInstance().poke(); |
| updateLogdSizeValues(); |
| } |
| } |