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Commit 8a593a31 authored by Michael Runge's avatar Michael Runge Committed by Android Git Automerger
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am 044dca28: Merge "Add logging for kernel audit failures, including SELinux." 

# By Geremy Condra
# Via Android (Google) Code Review (1) and Geremy Condra (1)
* commit '044dca28':
  Add logging for kernel audit failures, including SELinux.
parents 0229d081 044dca28

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

+29 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ public class BootReceiver extends BroadcastReceiver { 
                    -LOG_SIZE, "APANIC_CONSOLE");

            addFileToDropBox(db, prefs, headers, "/data/dontpanic/apanic_threads",

                    -LOG_SIZE, "APANIC_THREADS");

            addAuditErrorsToDropBox(db, prefs, headers, -LOG_SIZE, "SYSTEM_AUDIT");

        } else {

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

        }
@@ -174,4 +175,32 @@ public class BootReceiver extends BroadcastReceiver { 
        Slog.i(TAG, "Copying " + filename + " to DropBox (" + tag + ")");

        db.addText(tag, headers + FileUtils.readTextFile(file, maxSize, "[[TRUNCATED]]\n"));

    }



    private static void addAuditErrorsToDropBox(DropBoxManager db,  SharedPreferences prefs,

            String headers, int maxSize, String tag) throws IOException {

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

        Slog.i(TAG, "Copying audit failures to DropBox");



        File file = new File("/proc/last_kmsg");

        long fileTime = file.lastModified();

        if (fileTime <= 0) return;  // File does not exist



        if (prefs != null) {

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

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

            // TODO: move all these SharedPreferences Editor commits

            // outside this function to the end of logBootEvents

            prefs.edit().putLong(tag, fileTime).apply();

        }



        String log = FileUtils.readTextFile(file, maxSize, "[[TRUNCATED]]\n");

        StringBuilder sb = new StringBuilder();

        for (String line : log.split("\n")) {

            if (line.contains("audit")) {

                sb.append(line + "\n");

            }

        }

        Slog.i(TAG, "Copied " + sb.toString().length() + " worth of audits to DropBox");

        db.addText(tag, headers + sb.toString());

    }

}