Hi,
I'm working on my thesis and stumbled upon a problem. I'm using AOSP 5.0.0 and both an emulator and a Nexus7 flo with the same results. My goal is to monitor any process calling the SQLiteDatabase class (I'm logging some of the method calls like rawQueryWithFactory, insert, update) with Binder.getcallingPid (I'm okay with receiving the pid of the process running SQLiteDatabase itself if a IPC call was not involved) and then getting the process security context with SELinux.getPidContext(). My solution works almost every time because I get some null contexts, only when i'm asking for the label for com.android.systemui . This happens as soon as the com.android.systemui process is created and later on. Then, on the last time it asks for some SQLiteDatabase methods, it has a label (u:r:platform_app:s0). If the process is destroyed and recreated (sometimes it happens) with a different Pid, it goes back to having a null label and to finally have one later on. Why does this happens to com.android.systemui? Is there a way to have him properly labeled? Or is it properly labeled and I'm doing something wrong?
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