// requires special handling.
func IsRISCV64VTypeI(op obj.As) bool {
	return op == riscv.AVSETVLI || op == riscv.AVSETIVLI
}

// IsRISCV64CSRO reports whether the op is an instruction that uses
// CSR symbolic names and whether that instruction expects a register
// or an immediate source operand.
func IsRISCV64CSRO(op obj.As) (imm bool, ok bool) {
	switch op {
	case riscv.ACSRRCI, riscv.ACSRRSI, riscv.ACSRRWI:
		imm = true

func recoverTest(i int, shouldPass bool, t *testing.T) {
	if err := recover(); err == nil && !shouldPass {
		t.Errorf("Test %d should fail but passed successfully", i)
	} else if err != nil && shouldPass {
		t.Errorf("Test %d should pass but failed: %v", i, err)
	}
}

var generateKeyTests = []struct {
	ExtKey     [32]byte
	Random     io.Reader
	ShouldPass bool
}{

	cmdline string
	layout  [][]string
}

type disksLayout struct {
	legacy bool
	pools  []poolDisksLayout
}

type serverCtxt struct {
	JSON, Quiet               bool
	Anonymous                 bool
	StrictS3Compat            bool
	Addr, ConsoleAddr         string
	ConfigDir, CertsDir       string
	configDirSet, certsDirSet bool
	Interface                 string

	RootUser, RootPwd string

	}

	readTriggerCh := make(chan bool, len(p.readers))
	defer xioutil.SafeClose(readTriggerCh) // close the channel upon return

	for i := 0; i < p.dataBlocks; i++ {
		// Setup read triggers for p.dataBlocks number of reads so that it reads in parallel.
		readTriggerCh <- true
	}

	disksNotFound := int32(0)
	bitrotHeal := int32(0)       // Atomic bool flag.
	missingPartsHeal := int32(0) // Atomic bool flag.

		URL:    &url.URL{Path: grid.RouteLockPath},
	}
	if !guessIsRPCReq(r) {
		t.Fatal("Grid RPC path not detected")
	}
}

var isHTTPHeaderSizeTooLargeTests = []struct {
	header     http.Header
	shouldFail bool
}{
	{header: generateHeader(0, 0), shouldFail: false},
	{header: generateHeader(1024, 0), shouldFail: false},
	{header: generateHeader(2048, 0), shouldFail: false},
	{header: generateHeader(8*1024+1, 0), shouldFail: true},

	RegisterPrefix map[string]bool
	// RegisterNumber converts R(10) into arm.REG_R10.
	RegisterNumber func(string, int16) (int16, bool)
	// Instruction is a jump.
	IsJump func(word string) bool
}

// nilRegisterNumber is the register number function for architectures
// that do not accept the R(N) notation. It always returns failure.
func nilRegisterNumber(name string, n int16) (int16, bool) {
	return 0, false
}

	// EncryptionConfiguration TODO: not needed for MinIO
}

func (d Destination) isValidStorageClass() bool {
	if d.StorageClass == "" {
		return true
	}
	return d.StorageClass == "STANDARD" || d.StorageClass == "REDUCED_REDUNDANCY"
}

// IsValid - checks whether Destination is valid or not.
func (d Destination) IsValid() bool {
	return d.Bucket != "" || !d.isValidStorageClass()
}

func (d Destination) String() string {

	targetBucket, targetPrefix                       string
	minimumObjectAge                                 string
	debug                                            bool
	insecure                                         bool
)

func buildS3Client(endpoint, accessKey, secretKey string, insecure bool) (*minio.Client, error) {
	u, err := url.Parse(endpoint)
	if err != nil {
		return nil, err
	}

	secure := strings.EqualFold(u.Scheme, "https")

}

// Retention - bucket level retention configuration.
type Retention struct {
	Mode        RetMode
	Validity    time.Duration
	LockEnabled bool
}

// Retain - check whether given date is retainable by validity time.
func (r Retention) Retain(created time.Time) bool {
	t, err := UTCNowNTP()
	if err != nil {
		lockLogIf(context.Background(), err)
		// Retain
		return true
	}

	reusable bool
}

// isDir returns if the entry is representing a prefix directory.
func (e metaCacheEntry) isDir() bool {
	return len(e.metadata) == 0 && strings.HasSuffix(e.name, slashSeparator)
}

// isObject returns if the entry is representing an object.
func (e metaCacheEntry) isObject() bool {
	return len(e.metadata) > 0
}