| /* |
| * Copyright (C) 2009 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.server; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.SharedPreferences; |
| import android.os.Build; |
| import android.os.DropBoxManager; |
| import android.os.FileObserver; |
| import android.os.FileUtils; |
| import android.os.RecoverySystem; |
| import android.os.SystemProperties; |
| import android.provider.Settings; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.io.IOException; |
| |
| /** |
| * Performs a number of miscellaneous, non-system-critical actions |
| * after the system has finished booting. |
| */ |
| public class BootReceiver extends BroadcastReceiver { |
| private static final String TAG = "BootReceiver"; |
| |
| // Negative to read the *last* 64K of the file (per FileUtils.readTextFile) |
| private static final int LOG_SIZE = -65536; |
| |
| private static final File TOMBSTONE_DIR = new File("/data/tombstones"); |
| |
| // Keep a reference to the observer so the finalizer doesn't disable it. |
| private static FileObserver sTombstoneObserver = null; |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| try { |
| logBootEvents(context); |
| } catch (Exception e) { |
| Log.e(TAG, "Can't log boot events", e); |
| } |
| |
| try { |
| RecoverySystem.handleAftermath(); |
| } catch (Exception e) { |
| Log.e(TAG, "Can't handle recovery aftermath", e); |
| } |
| |
| try { |
| // Start the load average overlay, if activated |
| ContentResolver res = context.getContentResolver(); |
| if (Settings.System.getInt(res, Settings.System.SHOW_PROCESSES, 0) != 0) { |
| Intent loadavg = new Intent(context, com.android.server.LoadAverageService.class); |
| context.startService(loadavg); |
| } |
| } catch (Exception e) { |
| Log.e(TAG, "Can't start load average service", e); |
| } |
| } |
| |
| private void logBootEvents(Context ctx) throws IOException { |
| final DropBoxManager db = (DropBoxManager) ctx.getSystemService(Context.DROPBOX_SERVICE); |
| final SharedPreferences prefs = ctx.getSharedPreferences("log_files", Context.MODE_PRIVATE); |
| final String props = new StringBuilder() |
| .append("Build: ").append(Build.FINGERPRINT).append("\n") |
| .append("Hardware: ").append(Build.BOARD).append("\n") |
| .append("Bootloader: ").append(Build.BOOTLOADER).append("\n") |
| .append("Radio: ").append(Build.RADIO).append("\n") |
| .append("Kernel: ") |
| .append(FileUtils.readTextFile(new File("/proc/version"), 1024, "...\n")) |
| .toString(); |
| |
| if (db == null || prefs == null) return; |
| |
| if (SystemProperties.getLong("ro.runtime.firstboot", 0) == 0) { |
| String now = Long.toString(System.currentTimeMillis()); |
| SystemProperties.set("ro.runtime.firstboot", now); |
| db.addText("SYSTEM_BOOT", props); |
| addFileToDropBox(db, prefs, props, "/proc/last_kmsg", "SYSTEM_LAST_KMSG"); |
| addFileToDropBox(db, prefs, props, "/cache/recovery/log", "SYSTEM_RECOVERY_LOG"); |
| addFileToDropBox(db, prefs, props, "/data/dontpanic/apanic_console", "APANIC_CONSOLE"); |
| addFileToDropBox(db, prefs, props, "/data/dontpanic/apanic_threads", "APANIC_THREADS"); |
| } else { |
| db.addText("SYSTEM_RESTART", props); |
| } |
| |
| // Scan existing tombstones (in case any new ones appeared) |
| File[] tombstoneFiles = TOMBSTONE_DIR.listFiles(); |
| for (int i = 0; tombstoneFiles != null && i < tombstoneFiles.length; i++) { |
| addFileToDropBox(db, prefs, props, tombstoneFiles[i].getPath(), "SYSTEM_TOMBSTONE"); |
| } |
| |
| // Start watching for new tombstone files; will record them as they occur. |
| // This gets registered with the singleton file observer thread. |
| sTombstoneObserver = new FileObserver(TOMBSTONE_DIR.getPath(), FileObserver.CLOSE_WRITE) { |
| @Override |
| public void onEvent(int event, String path) { |
| try { |
| String filename = new File(TOMBSTONE_DIR, path).getPath(); |
| addFileToDropBox(db, prefs, props, filename, "SYSTEM_TOMBSTONE"); |
| } catch (IOException e) { |
| Log.e(TAG, "Can't log tombstone", e); |
| } |
| } |
| }; |
| |
| sTombstoneObserver.startWatching(); |
| } |
| |
| private static void addFileToDropBox( |
| DropBoxManager db, SharedPreferences prefs, |
| String headers, String filename, String tag) throws IOException { |
| if (!db.isTagEnabled(tag)) return; // Logging disabled |
| |
| File file = new File(filename); |
| long fileTime = file.lastModified(); |
| if (fileTime <= 0) return; // File does not exist |
| |
| long lastTime = prefs.getLong(filename, 0); |
| if (lastTime == fileTime) return; // Already logged this particular file |
| prefs.edit().putLong(filename, fileTime).commit(); |
| |
| StringBuilder report = new StringBuilder(headers).append("\n"); |
| report.append(FileUtils.readTextFile(file, LOG_SIZE, "[[TRUNCATED]]\n")); |
| db.addText(tag, report.toString()); |
| Log.i(TAG, "Logging " + filename + " to DropBox (" + tag + ")"); |
| } |
| } |