Add property to force restorecon to run. am: 6da39a44

import android.content.pm.PackageParser;

import android.content.pm.Signature;

import android.os.Environment;

import android.os.SystemProperties;

import android.system.ErrnoException;

import android.system.Os;

import android.system.OsConstants;

    // to synchronize access during policy load and access attempts.

    private static List<Policy> sPolicies = new ArrayList<>();

    private static final String PROP_FORCE_RESTORECON = "sys.force_restorecon";

    /** Path to version on rootfs */

    private static final File VERSION_FILE = new File("/selinux_version");

     * @return Returns true if the restorecon should occur or false otherwise.

     */

    public static boolean isRestoreconNeeded(File file) {

        // To investigate boot timing, allow a property to always force restorecon

        if (SystemProperties.getBoolean(PROP_FORCE_RESTORECON, false)) {

            return true;

        }

        try {

            final byte[] buf = new byte[20];

            final int len = Os.getxattr(file.getAbsolutePath(), XATTR_SEAPP_HASH, buf);