import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.Serializable;
import java.math.BigInteger;
import java.util.NoSuchElementException;
import org.jspecify.annotations.Nullable;

/**
 * A descriptor for a <i>discrete</i> {@code Comparable} domain such as all {@link Integer}
 * instances. A discrete domain is one that supports the three basic operations: {@link #next},

)

func access(name string) error {
	if err := unix.Access(name, unix.F_OK); err != nil {
		return &os.PathError{Op: "lstat", Path: name, Err: err}
	}
	return nil
}

// openFileWithFD return 'fd' based file descriptor
func openFileWithFD(name string, flag int, perm os.FileMode) (fd int, err error) {
	switch flag & writeMode {
	case writeMode:
		defer updateOSMetrics(osMetricOpenFileWFd, name)(err)
	default:

	}

	binary.LittleEndian.PutUint32(sig[:], uint32(dataDescriptorSignature))
	if bytes.Contains(b, sig[:]) {
		t.Error("there should be no data descriptor")
	}
}

func TestWriterCopy(t *testing.T) {
	// make a zip file
	buf := new(bytes.Buffer)
	w := NewWriter(buf)
	for _, wt := range writeTests {
		testCreate(t, w, &wt)
	}

// 4K page boundaries. Without passing aligned buffer may cause
// this function to return error.
//
// This code is similar in spirit to io.Copy but it is only to be
// used with DIRECT I/O based file descriptor and it is expected that
// input writer *os.File not a generic io.Writer. Make sure to have
// the file opened for writes with syscall.O_DIRECT flag.

  |
  | o annotation mechanism so that changes to the model can be accurately tracked.
  |
  | o need to clean up all the descriptions, matching anything to the current project-descriptor.xml file and
  |   improving on that
  |
  | o use enums where appropriate (eg dependency scope)
  |
  | o a number of elements have a groupId/artifactId and sometimes version. It would be good to have them all extend one

                    "DH2Q", // Durable handle request V2
                    "DH2C", // Durable handle reconnect V2
                    "ExtA", // Extended attributes
                    "SecD", // Security descriptor
                    "AppI" // App instance ID
            };

            for (String name : contextNames) {
                MockCreateContextRequest context = new MockCreateContextRequest(name);

     */
    SID getOwnerUser(boolean resolve) throws IOException;

    /**
     * Return an array of Access Control Entry (ACE) objects representing
     * the security descriptor associated with this file or directory.
     * <p>
     * Initially, the SIDs within each ACE will not be resolved however when
     * <code>getType()</code>, <code>getDomainName()</code>, <code>getAccountName()</code>,

	directoryHeaderLen       = 46         // + filename + extra + comment
	directoryEndLen          = 22         // + comment
	dataDescriptorLen        = 16         // four uint32: descriptor signature, crc32, compressed size, size
	dataDescriptor64Len      = 24         // two uint32: signature, crc32 | two uint64: compressed size, size
	directory64LocLen        = 20         //

                return send0(loc, request, response, params);
            } catch (final SmbException smbe) {
                // Retrying only makes sense if the invalid parameter is an tree id. If we have a stale file descriptor
                // retrying make no sense, as it will never become available again.
                if (params.contains(RequestParam.NO_RETRY)

            return this.handle;
        }
        return this.handle.acquire();
    }

    /**
     * Ensures that the file descriptor is openend
     *
     * @throws CIFSException if an error occurs opening the file
     */
    public void open() throws CIFSException {
        try (SmbFileHandleImpl fh = ensureOpen()) {}
    }