buf, err := os.ReadFile(cgroupV2MemLimitFile)
	if err != nil {
		buf, err = os.ReadFile(cgroupV1MemLimitFile)
	}
	if err != nil {
		return 0
	}
	limit, err = strconv.ParseUint(strings.TrimSpace(string(buf)), 10, 64)
	if err != nil {
		// The kernel can return valid but non integer values
		// but still, no need to interpret more
		return 0
	}
	if limit >= 100*humanize.TiByte {
		// No limit set, or unreasonably high. Ignore

	}

	cred, _, s3Err := checkKeyValid(r, accessKey)
	if s3Err != ErrNone {
		return s3Err
	}

	// Make sure the request has not expired.
	expiresInt, err := strconv.ParseInt(expires, 10, 64)
	if err != nil {
		return ErrMalformedExpires
	}

	// Check if the presigned URL has expired.
	if expiresInt < UTCNow().Unix() {
		return ErrExpiredPresignRequest
	}

	}
	volume := r.Form.Get(storageRESTVolume)
	filePath := r.Form.Get(storageRESTFilePath)
	offset, err := strconv.ParseInt(r.Form.Get(storageRESTOffset), 10, 64)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}
	length, err := strconv.ParseInt(r.Form.Get(storageRESTLength), 10, 64)
	if err != nil {
		s.writeErrorResponse(w, err)
		return
	}

            // closing should null tmp; subsequent readDirect should fail
            in.close();
            IOException ex = assertThrows(IOException.class, () -> in.readDirect(new byte[8], 0, 4));
            assertTrue(ex.getMessage().contains("Bad file descriptor"));
        }

        @Test
        @DisplayName("available always returns 0")
        void availableAlwaysZero() throws Exception {

	blockSizeStr := r.Form.Get("blocksize")
	fileSizeStr := r.Form.Get("filesize")

	blockSize, err := strconv.ParseUint(blockSizeStr, 10, 64)
	if err != nil {
		blockSize = 4 * humanize.MiByte // default value
	}

	fileSize, err := strconv.ParseUint(fileSizeStr, 10, 64)
	if err != nil {
		fileSize = 1 * humanize.GiByte // default value
	}

	opts := madmin.DriveSpeedTestOpts{
		Serial:    serial,

    // Helper: build a minimal SMB2 header with a given status
    private static byte[] buildHeader(int status) {
        byte[] hdr = new byte[64]; // SMB2 header is 64 bytes
        System.arraycopy(SMBUtil.SMB2_HEADER, 0, hdr, 0, 64);
        // Write Status (little-endian) at offset 8 in the SMB2 header
        SMBUtil.writeInt4(status, hdr, 8);
        // Write Command = SMB2_IOCTL (0x000B) at offset 12
        SMBUtil.writeInt2(0x000B, hdr, 12);

            throw new RuntimeException(e);
        }

        // Test size calculation
        int size = request.size();
        int expectedRawSize = Smb2Constants.SMB2_HEADER_LENGTH + 40 + 64;
        int expectedSize = (expectedRawSize + 7) & ~7;
        assertEquals(expectedSize, size);

        // Test wire format writing
        byte[] buffer = new byte[512];

	blockSizeStr := r.Form.Get("blocksize")
	fileSizeStr := r.Form.Get("filesize")

	blockSize, err := strconv.ParseUint(blockSizeStr, 10, 64)
	if err != nil {
		blockSize = 4 * humanize.MiByte // default value
	}

	fileSize, err := strconv.ParseUint(fileSizeStr, 10, 64)
	if err != nil {
		fileSize = 1 * humanize.GiByte // default value
	}

	opts := madmin.DriveSpeedTestOpts{
		Serial:    serial,

        when(tree.send(any(TransCallNamedPipe.class), any(TransCallNamedPipeResponse.class))).thenAnswer(inv -> inv.getArgument(1));

        int n = handle.sendrecv(new byte[3], 0, 3, new byte[8], 64);
        assertEquals(0, n, "Default response length is 0 unless protocol fills it");
    }

    @Test
    @DisplayName("sendrecv falls back to stream write/read when no call/transact")

	if o.ActualSize != nil {
		return *o.ActualSize, nil
	}
	if o.IsCompressed() {
		sizeStr := o.UserDefined[ReservedMetadataPrefix+"actual-size"]
		if sizeStr != "" {
			size, err := strconv.ParseInt(sizeStr, 10, 64)
			if err != nil {
				return -1, errInvalidDecompressedSize
			}
			return size, nil
		}
		var actualSize int64
		for _, part := range o.Parts {
			actualSize += part.ActualSize
		}