Add tracking of bg check violations in broadcast stats. (7fc46d8b) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/am/ActivityManagerService.java

+11 −2

Original line number	Diff line number	Diff line
		@@ -18938,8 +18938,7 @@ public class ActivityManagerService extends IActivityManager.Stub
		return ActivityManager.BROADCAST_SUCCESS;
		}

		final void addBroadcastStatLocked(String action, String srcPackage, int receiveCount,
		int skipCount, long dispatchTime) {
		final void rotateBroadcastStatsIfNeededLocked() {
		final long now = SystemClock.elapsedRealtime();
		if (mCurBroadcastStats == null \|\|
		(mCurBroadcastStats.mStartRealtime +(246060*1000) < now)) {
		@@ -18950,9 +18949,19 @@ public class ActivityManagerService extends IActivityManager.Stub
		}
		mCurBroadcastStats = new BroadcastStats();
		}
		}

		final void addBroadcastStatLocked(String action, String srcPackage, int receiveCount,
		int skipCount, long dispatchTime) {
		rotateBroadcastStatsIfNeededLocked();
		mCurBroadcastStats.addBroadcast(action, srcPackage, receiveCount, skipCount, dispatchTime);
		}

		final void addBackgroundCheckViolationLocked(String action, String targetPackage) {
		rotateBroadcastStatsIfNeededLocked();
		mCurBroadcastStats.addBackgroundCheckViolation(action, targetPackage);
		}

		final Intent verifyBroadcastLocked(Intent intent) {
		// Refuse possible leaked file descriptors
		if (intent != null && intent.hasFileDescriptors() == true) {

services/core/java/com/android/server/am/BroadcastQueue.java

+2 −0

Original line number	Diff line number	Diff line
		@@ -1158,6 +1158,8 @@ public final class BroadcastQueue {
		&& r.intent.getPackage() == null
		&& ((r.intent.getFlags()
		& Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND) == 0))) {
		mService.addBackgroundCheckViolationLocked(r.intent.getAction(),
		component.getPackageName());
		Slog.w(TAG, "Background execution not allowed: receiving "
		+ r.intent + " to "
		+ component.flattenToShortString());

services/core/java/com/android/server/am/BroadcastStats.java

+36 −0

Original line number	Diff line number	Diff line
		@@ -47,6 +47,7 @@ public final class BroadcastStats {
		static final class ActionEntry {
		final String mAction;
		final ArrayMap<String, PackageEntry> mPackages = new ArrayMap<>();
		final ArrayMap<String, ViolationEntry> mBackgroundCheckViolations = new ArrayMap<>();
		int mReceiveCount;
		int mSkipCount;
		long mTotalDispatchTime;
		@@ -61,6 +62,10 @@ public final class BroadcastStats {
		int mSendCount;
		}

		static final class ViolationEntry {
		int mCount;
		}

		public BroadcastStats() {
		mStartRealtime = SystemClock.elapsedRealtime();
		mStartUptime = SystemClock.uptimeMillis();
		@@ -87,6 +92,20 @@ public final class BroadcastStats {
		pe.mSendCount++;
		}

		public void addBackgroundCheckViolation(String action, String targetPackage) {
		ActionEntry ae = mActions.get(action);
		if (ae == null) {
		ae = new ActionEntry(action);
		mActions.put(action, ae);
		}
		ViolationEntry ve = ae.mBackgroundCheckViolations.get(targetPackage);
		if (ve == null) {
		ve = new ViolationEntry();
		ae.mBackgroundCheckViolations.put(targetPackage, ve);
		}
		ve.mCount++;
		}

		public boolean dumpStats(PrintWriter pw, String prefix, String dumpPackage) {
		boolean printedSomething = false;
		ArrayList<ActionEntry> actions = new ArrayList<>(mActions.size());
		@@ -123,6 +142,15 @@ public final class BroadcastStats {
		pw.print(pe.mSendCount);
		pw.println(" times");
		}
		for (int j=ae.mBackgroundCheckViolations.size()-1; j>=0; j--) {
		pw.print(prefix);
		pw.print(" Bg Check Violation ");
		pw.print(ae.mBackgroundCheckViolations.keyAt(j));
		pw.print(": ");
		ViolationEntry ve = ae.mBackgroundCheckViolations.valueAt(j);
		pw.print(ve.mCount);
		pw.println(" times");
		}
		}
		return printedSomething;
		}
		@@ -158,6 +186,14 @@ public final class BroadcastStats {
		pw.print(pe.mSendCount);
		pw.println();
		}
		for (int j=ae.mBackgroundCheckViolations.size()-1; j>=0; j--) {
		pw.print("v,");
		pw.print(ae.mBackgroundCheckViolations.keyAt(j));
		ViolationEntry ve = ae.mBackgroundCheckViolations.valueAt(j);
		pw.print(",");
		pw.print(ve.mCount);
		pw.println();
		}
		}
		}
		}