Merge "Add new configuration loading path for apex module"

import android.content.pm.PackageManager;

import android.os.Build;

import android.os.Environment;

import android.os.FileUtils;

import android.os.Process;

import android.os.SystemProperties;

import android.os.Trace;

                Environment.getSystemExtDirectory(), "etc", "sysconfig"), ALLOW_ALL);

        readPermissions(Environment.buildPath(

                Environment.getSystemExtDirectory(), "etc", "permissions"), ALLOW_ALL);

        // Skip loading configuration from apex if it is not a system process.

        if (!isSystemProcess()) {

            return;

        }

        // Read configuration of libs from apex module.

        // TODO: Use a solid way to filter apex module folders?

        for (File f: FileUtils.listFilesOrEmpty(Environment.getApexDirectory())) {

            if (f.isFile() || f.getPath().contains("@")) {

                continue;

            }

            readPermissions(Environment.buildPath(f, "etc", "permissions"), ALLOW_LIBS);

        }

    }

    @VisibleForTesting