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Commit f670a2fe authored by Jing Ji's avatar Jing Ji Committed by Android Build Coastguard Worker
Browse files

DO NOT MERGE: ActivityManager#killBackgroundProcesses can kill caller's own app only 

unless it's a system app.

Bug: 239423414
Bug: 223376078
Test: atest CtsAppTestCases:ActivityManagerTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f5943a364164f5d88cac42df7a7749a205932e7c)
Merged-In: Iac6baa889965b8ffecd9a43179a4c96632ad1d02
Change-Id: Iac6baa889965b8ffecd9a43179a4c96632ad1d02
parent 346a778e

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

+16 −0
Original line number Diff line number Diff line
@@ -3745,6 +3745,22 @@ public class ActivityManagerService extends IActivityManager.Stub 
            throw new SecurityException(msg);

        }













        final int callingUid = Binder.getCallingUid();













        final int callingPid = Binder.getCallingPid();

























        ProcessRecord proc;













        synchronized (mPidsSelfLocked) {













            proc = mPidsSelfLocked.get(callingPid);













        }













        if (callingUid >= FIRST_APPLICATION_UID













                && (proc == null || !proc.info.isSystemApp())) {













            final String msg = "Permission Denial: killAllBackgroundProcesses() from pid="













                    + callingPid + ", uid=" + callingUid + " is not allowed";













            Slog.w(TAG, msg);













            // Silently return to avoid existing apps from crashing.













            return;













        }



























        final long callingId = Binder.clearCallingIdentity();















        try {















            synchronized (this) {