return LockContext{ctx: newCtx, cancel: cancel}, nil
}

// RUnlock - block until read lock is released.
func (di *distLockInstance) RUnlock(lc LockContext) {
	if lc.cancel != nil {
		lc.cancel()
	}
	di.rwMutex.RUnlock(lc.ctx)
}

// localLockInstance - frontend/top-level interface for namespace locks.
type localLockInstance struct {
	ns     *nsLockMap
	volume string
	paths  []string

// It is possible to have a disconnected client in this tiny window of time.
func CheckPortAvailability(host, port string, opts TCPOptions) (err error) {
	lc := &net.ListenConfig{}

	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
	defer cancel()

	l, err := lc.Listen(ctx, "tcp", net.JoinHostPort(host, port))
	if err != nil {
		return err
	}

	// As we are able to listen on this network, the port is not in use.

				expired = append(expired, t.versions...)
			}
		}
	}()
	lc := lifecycle.Lifecycle{
		Rules: []lifecycle.Rule{
			{
				ID:     "max-versions",
				Status: "Enabled",
				NoncurrentVersionExpiration: lifecycle.NoncurrentVersionExpiration{
					NewerNoncurrentVersions: 1,
				},
			},
		},
	}
	lcXML, err := xml.Marshal(lc)
	if err != nil {
		t.Fatalf("Failed to marshal lifecycle config: %v", err)
	}

func NewPolicySys() *PolicySys {
	return &PolicySys{}
}

func getSTSConditionValues(r *http.Request, lc string, cred auth.Credentials) map[string][]string {
	m := make(map[string][]string)
	if d := r.Form.Get("DurationSeconds"); d != "" {
		m["DurationSeconds"] = []string{d}
	}
	return m
}

func getConditionValues(r *http.Request, lc string, cred auth.Credentials) map[string][]string {
	currTime := UTCNow()

	var (

			expectedErr: nil,
		},
	}
	for i, tc := range testCases {
		lc, err := lifecycle.ParseLifecycleConfig(bytes.NewReader(tc.xml))
		if err != nil {
			t.Fatalf("Test %d: Failed to parse lifecycle config %v", i+1, err)
		}

		err = validateTransitionTier(lc)
		if err != tc.expectedErr {
			t.Fatalf("Test %d: Expected %v but got %v", i+1, tc.expectedErr, err)
		}
	}

		w.Header()[xhttp.AmzStorageClass] = []string{filterStorageClass(ctx, objInfo.TransitionedObject.Tier)}
	}

	if lc, err := globalLifecycleSys.Get(objInfo.Bucket); err == nil {
		lc.SetPredictionHeaders(w, objInfo.ToLifecycleOpts())
	}

	if v, ok := objInfo.UserDefined[ReservedMetadataPrefix+"compression"]; ok {
		if i := strings.LastIndexByte(v, '/'); i >= 0 {

            LoginContext lc;

	    Subject ps = super.getSubject();

            if ( this.configuration != null ) {
                lc = new LoginContext(this.serviceName, ps, this, this.configuration);
            }
            else if ( ps != null ) {
                lc = new LoginContext(this.serviceName, ps, this);
            } else {
                lc = new LoginContext(this.serviceName, this);
	    }

        this(System.getProperty("jaaslounge.sso.jaas.config"));
    }


    public KerberosCredentials ( String loginContextName ) throws LoginException {
        LoginContext lc = new LoginContext(loginContextName);
        lc.login();
        this.subject = lc.getSubject();
    }


    public KerberosKey[] getKeys () {
        List<Key> serverKeys = new ArrayList<>();

// Note: The check method tries to listen on given port and closes it.
// It is possible to have a disconnected client in this tiny window of time.
func CheckPortAvailability(host, port string, opts TCPOptions) (err error) {
	lc := &net.ListenConfig{
		Control: func(network, address string, c syscall.RawConn) error {
			c.Control(func(fdPtr uintptr) {
				if opts.Interface != "" {

RUN Add-Content -Path C:\tools\msys64\etc\pacman.d\mirrorlist.msys -Value 'SigLevel = Never'

# Install pacman packages.
RUN C:\tools\msys64\usr\bin\bash.exe -lc \
  'pacman --noconfirm -Syy curl git patch vim unzip zip'

# Install Python as a general utility/tool.
ENV PYTHON_VERSION 3.12.3