pagesize := syscall.Getpagesize()
	b, err := syscall.Mmap(0, 0, 3*pagesize, syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_ANONYMOUS|syscall.MAP_PRIVATE)
	if err != nil {
		t.Fatalf("mmap failed %s", err)
	}
	err = syscall.Mprotect(b[:pagesize], syscall.PROT_NONE)
	if err != nil {
		t.Fatalf("mprotect low failed %s\n", err)
	}
	err = syscall.Mprotect(b[2*pagesize:], syscall.PROT_NONE)
	if err != nil {

	}

	for _, testCase := range testCases {
		err := CheckPortAvailability(testCase.host, strconv.Itoa(testCase.port), TCPOptions{})
		switch {
		case testCase.expectedErr == nil:
			if err != nil {
				t.Fatalf("error: expected = <nil>, got = %v", err)
			}
		case err == nil:
			t.Fatalf("error: expected = %v, got = <nil>", testCase.expectedErr)
		case testCase.expectedErr.Error() != err.Error():

}

func writeErrorResponse(w http.ResponseWriter, err error) {
	w.WriteHeader(http.StatusBadRequest)
	json.NewEncoder(w).Encode(map[string]string{
		"error": fmt.Sprintf("%v", err),
	})
}

type Result struct {
	Result bool `json:"result"`
}

func mainHandler(w http.ResponseWriter, r *http.Request) {
	body, err := io.ReadAll(r.Body)
	if err != nil {
		writeErrorResponse(w, err)
		return
	}

	var out bytes.Buffer

	var jk JWKS
	if err := json.Unmarshal([]byte(jsonkey), &jk); err != nil {
		t.Fatal("Unmarshal: ", err)
	} else if len(jk.Keys) != 3 {
		t.Fatalf("Expected 3 keys, got %d", len(jk.Keys))
	}

	var kids []string
	for ii, jks := range jk.Keys {
		_, err := jks.DecodePublicKey()
		if err != nil {
			t.Fatalf("Failed to decode key %d: %v", ii, err)
		}
		kids = append(kids, jks.Kid)
	}

	}

	d.DisallowUnknownFields()
	if err := d.Decode(&rawPolicy); err != nil {
		return PostPolicyForm{}, err
	}

	parsedPolicy := PostPolicyForm{}

	// Parse expiry time.
	parsedPolicy.Expiration, err = time.Parse(time.RFC3339Nano, rawPolicy.Expiration)
	if err != nil {
		return PostPolicyForm{}, err
	}

	// Parse conditions.
	for _, val := range rawPolicy.Conditions {

			}

			if e, ok := v.(error); !ok || e != nil {
				err = e
			}
		}

		if len(data.err) > 0 && err == nil {
			t.Errorf("callbacks tests #%v should got error %v, but not", idx+1, data.err)
		} else if len(data.err) == 0 && err != nil {
			t.Errorf("callbacks tests #%v should not got error, but got %v", idx+1, err)
		}

		if ok, msg := assertCallbacks(callbacks.Create(), data.results); !ok {

			err = z.Filter.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Filter")
				return
			}
		case "Notify":
			err = z.Notify.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Notify")
				return
			}
		case "Retry":
			err = z.Retry.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Retry")
				return
			}
		default:
			err = dc.Skip()

	hash.Hash       // For bitrot hash
}

func (b *wholeBitrotWriter) Write(p []byte) (int, error) {
	err := b.disk.AppendFile(context.TODO(), b.volume, b.filePath, p)
	if err != nil {
		return 0, err
	}
	_, err = b.Hash.Write(p)
	if err != nil {
		return 0, err
	}
	return len(p), nil
}

func (b *wholeBitrotWriter) Close() error {
	return nil
}

	// map header, size 2
	// write "Count"
	err = en.Append(0x82, 0xa5, 0x43, 0x6f, 0x75, 0x6e, 0x74)
	if err != nil {
		return
	}
	err = en.WriteInt64(z.Count)
	if err != nil {
		err = msgp.WrapError(err, "Count")
		return
	}
	// write "Bytes"
	err = en.Append(0xa5, 0x42, 0x79, 0x74, 0x65, 0x73)
	if err != nil {
		return
	}
	err = en.WriteInt64(z.Bytes)
	if err != nil {

		if err != nil {
			t.Fatal(err)
		}
		_, err = globalIAMSys.PolicyDBSet(ctx, accessKey, testKMSPolicyName, regUser, false)
		if err != nil {
			t.Fatal(err)
		}
	} else {
		err = globalIAMSys.DeletePolicy(ctx, testKMSPolicyName, false)
		if err != nil {
			t.Fatal(err)
		}
		_, err = globalIAMSys.PolicyDBSet(ctx, accessKey, "", regUser, false)
		if err != nil {
			t.Fatal(err)
		}
	}