Merge "Also load fs-verity cert from /system/etc/security/fsverity/" into rvc-dev am: 05a0fc26

import android.content.pm.PackageManagerInternal;

import android.os.Binder;

import android.os.Build;

import android.os.Environment;

import android.os.IBinder;

import android.os.SystemProperties;

import android.os.UserHandle;

import java.io.File;

import java.io.IOException;

import java.nio.file.Files;

import java.nio.file.Path;

import java.security.cert.Certificate;

import java.security.cert.CertificateException;

import java.security.cert.CertificateFactory;

        // duplicate the same loading logic here.

        // Load certificates trusted by the device manufacturer.

        loadCertificatesFromDirectory("/product/etc/security/fsverity");

        // NB: Directories need to be synced with system/security/fsverity_init/fsverity_init.cpp.

        final String relativeDir = "etc/security/fsverity";

        loadCertificatesFromDirectory(Environment.getRootDirectory().toPath()

                .resolve(relativeDir));

        loadCertificatesFromDirectory(Environment.getProductDirectory().toPath()

                .resolve(relativeDir));

    }

    private void loadCertificatesFromDirectory(String path) {

    private void loadCertificatesFromDirectory(Path path) {

        try {

            File[] files = new File(path).listFiles();

            File[] files = path.toFile().listFiles();

            if (files == null) {

                return;

            }