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Commit 492c6ed5 authored by Dan Egnor's avatar Dan Egnor
Browse files

Report tombstone (native crash) data to the dropbox. 

Also uses a shared_prefs file to keep track of which files have been
logged, instead of polluting Settings.Secure with this data.
parent ea11654e

services/java/com/android/server/BootReceiver.java

+56 −28
Original line number Diff line number Diff line
@@ -20,8 +20,10 @@ 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;
@@ -38,10 +40,14 @@ import java.io.IOException; 
public class BootReceiver extends BroadcastReceiver {

    private static final String TAG = "BootReceiver";



    // Negative meaning capture the *last* 64K of the file

    // (passed to FileUtils.readTextFile)

    // 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 {
@@ -68,49 +74,71 @@ public class BootReceiver extends BroadcastReceiver { 
        }

    }



    private void logBootEvents(Context context) throws IOException {

        DropBoxManager db = (DropBoxManager) context.getSystemService(Context.DROPBOX_SERVICE);

    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();



        StringBuilder props = new StringBuilder();

        props.append("Build: ").append(Build.FINGERPRINT).append("\n");

        props.append("Hardware: ").append(Build.BOARD).append("\n");

        props.append("Bootloader: ").append(Build.BOOTLOADER).append("\n");

        props.append("Radio: ").append(Build.RADIO).append("\n");

        props.append("Kernel: ");

        props.append(FileUtils.readTextFile(new File("/proc/version"), 1024, "...\n"));

        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);

            if (db != null) db.addText("SYSTEM_BOOT", props.toString());

            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 {

            if (db != null) db.addText("SYSTEM_RESTART", props.toString());

            return;  // Subsequent boot, don't log kernel boot log

            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);

                }

            }

        };



        ContentResolver cr = context.getContentResolver();

        logBootFile(cr, db, props, "/cache/recovery/log", "SYSTEM_RECOVERY_LOG");

        logBootFile(cr, db, props, "/proc/last_kmsg", "SYSTEM_LAST_KMSG");

        logBootFile(cr, db, props, "/data/dontpanic/apanic_console", "APANIC_CONSOLE");

        logBootFile(cr, db, props, "/data/dontpanic/apanic_threads", "APANIC_THREADS");

        sTombstoneObserver.startWatching();

    }



    private void logBootFile(ContentResolver cr, DropBoxManager db,

            CharSequence headers, String filename, String tag) throws IOException {

        if (cr == null || db == null || !db.isTagEnabled(tag)) return;  // Logging disabled

    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



        String setting = "logfile:" + filename;

        long lastTime = Settings.Secure.getLong(cr, setting, 0);

        long lastTime = prefs.getLong(filename, 0);

        if (lastTime == fileTime) return;  // Already logged this particular file

        Settings.Secure.putLong(cr, setting, fileTime);

        prefs.edit().putLong(filename, fileTime).commit();



        StringBuilder report = new StringBuilder(headers);

        report.append("\n");

        report.append(FileUtils.readTextFile(new File(filename), LOG_SIZE, "[[TRUNCATED]]\n"));

        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 + ")");

    }

}