Add boot events (SYSTEM_LAST_KMSG and friends) to the dropbox.
Optimize DropBoxManagerService.dump() a bit.
diff --git a/services/java/com/android/server/BootReceiver.java b/services/java/com/android/server/BootReceiver.java
index 590b1e4..1d31d09 100644
--- a/services/java/com/android/server/BootReceiver.java
+++ b/services/java/com/android/server/BootReceiver.java
@@ -1,40 +1,108 @@
 /*
-**
-** Copyright 2007, 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.
-*/
+ * 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.BroadcastReceiver;
+import android.os.Build;
+import android.os.DropBoxManager;
+import android.os.FileUtils;
+import android.os.ParcelFileDescriptor;
+import android.os.SystemProperties;
 import android.provider.Settings;
+import android.util.Log;
 
-public class BootReceiver extends BroadcastReceiver
-{
+import com.android.internal.os.RecoverySystem;
+
+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";
+
     @Override
-    public void onReceive(Context context, Intent intent)
-    {
-        Intent service = new Intent(context, com.android.server.LoadAverageService.class);
-        ContentResolver res = context.getContentResolver();
-        boolean shown = Settings.System.getInt(
-                res, Settings.System.SHOW_PROCESSES, 0) != 0;
-        if (shown) {
-            context.startService(service);
+    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 context) throws IOException {
+        DropBoxManager db = (DropBoxManager) context.getSystemService(Context.DROPBOX_SERVICE);
+
+        String build =
+                "Build: " + Build.FINGERPRINT + "\nKernel: " +
+                FileUtils.readTextFile(new File("/proc/version"), 1024, "...\n");
+
+        if (SystemProperties.getLong("ro.runtime.firstboot", 0) == 0) {
+            String now = Long.toString(System.currentTimeMillis());
+            SystemProperties.set("ro.runtime.firstboot", now);
+            if (db != null) db.addText("SYSTEM_BOOT", build);
+        } else {
+            if (db != null) db.addText("SYSTEM_RESTART", build);
+            return;  // Subsequent boot, don't log kernel boot log
+        }
+
+        ContentResolver cr = context.getContentResolver();
+        logBootFile(cr, db, "/cache/recovery/log", "SYSTEM_RECOVERY_LOG");
+        logBootFile(cr, db, "/data/dontpanic/last_kmsg", "SYSTEM_LAST_KMSG");
+        logBootFile(cr, db, "/data/dontpanic/apanic_console", "APANIC_CONSOLE");
+        logBootFile(cr, db, "/data/dontpanic/apanic_threads", "APANIC_THREADS");
+    }
+
+    private void logBootFile(ContentResolver cr, DropBoxManager db, String filename, String tag)
+            throws IOException {
+        if (cr == null || db == null || !db.isTagEnabled(tag)) return;  // Logging disabled
+
+        File file = new File(filename);
+        long fileTime = file.lastModified();
+        if (fileTime <= 0) return;  // File does not exist
+
+        String setting = "logfile:" + filename;
+        long lastTime = Settings.Secure.getLong(cr, setting, 0);
+        if (lastTime == fileTime) return;  // Already logged this particular file
+
+        db.addFile(tag,
+                ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY),
+                DropBoxManager.IS_TEXT);
+    }
+}