Merge "Add createuserkey"

    return e4crypt_set_user_crypto_policies(args[1].c_str());

}

static int do_createuserkey(const std::vector<std::string>& args) {

    if (!is_file_crypto()) {

        return 0;

    }

    return e4crypt_create_user_key(atoi(args[1].c_str()),

                                   atoi(args[2].c_str()),

                                   atoi(args[3].c_str()));

}

BuiltinFunctionMap::Map& BuiltinFunctionMap::map() const {

    constexpr std::size_t kMax = std::numeric_limits<std::size_t>::max();

    static const Map builtin_functions = {

        {"class_start",             {1,     1,    do_class_start}},

        {"class_stop",              {1,     1,    do_class_stop}},

        {"copy",                    {2,     2,    do_copy}},

        {"createuserkey",           {3,     3,    do_createuserkey}},

        {"domainname",              {1,     1,    do_domainname}},

        {"enable",                  {1,     1,    do_enable}},

        {"exec",                    {1,     kMax, do_exec}},

    mkdir /data/user_de/0 0771 system system

    setusercryptopolicies /data/user

    createuserkey 0 0 0

    # Reload policy from /data/security if present.

    setprop selinux.reload_policy 1