I want to monitor a system app, say "S1." In particular, I want to know what files S1 is accessing/reading.
S1 can also download files over the Internet and save them in the root of the system.
I am running Android Oreo (S1 need API level >21) in an emulator, and I can access root via
adb root command.
I have already tried
Please suggest how can I do it?