extraSidAtts[i] = new PacSidAttributes(sid, attributes[i]);
                }
            }

            // ID for resource domain (used with relative IDs to get SIDs)
            SID resourceDomainId = null;
            if (resourceDomainIdPointer != 0) {
                resourceDomainId = pacStream.readSid();
            }

        // RID = 0x12345678 (305419896 in decimal, little-endian)
        byte[] data = new byte[] { 0x78, 0x56, 0x34, 0x12 };
        PacDataInputStream pdis = createInputStream(data);
        SID sid = pdis.readId();
        // The readId method creates a SID with authority 5 and the RID value
        // Expected format: S-1-5-305419896
        String sidString = sid.toString();
        assertNotNull(sidString);

     * @return the SID object
     * @throws IOException if an I/O error occurs
     * @throws PACDecodingException if the SID data is invalid
     */
    public SID readSid() throws IOException, PACDecodingException {
        final int sidSize = readInt();
        final byte[] bytes = new byte[8 + sidSize * 4];
        readFully(bytes);
        return new SID(bytes, 0);
    }

	// Check non existent directory.
	if _, err := readDir("/tmp/non-existent-directory"); err != errFileNotFound {
		t.Fatalf("expected = %s, got: %s", errFileNotFound, err)
	}

	file := path.Join(os.TempDir(), "issue")
	if err := os.WriteFile(file, []byte(""), 0o644); err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(file)

	// Check if file is given.
	if _, err := readDir(path.Join(file, "mydir")); err != errFileNotFound {

        DataOutputStream dos = new DataOutputStream(baos);

        // Write a RID (4 bytes) for readId() method
        writeLittleEndianInt(dos, 1000);

        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
        PacDataInputStream pacStream = new PacDataInputStream(bais);

        SID id = pacStream.readId();
        assertNotNull(id);
        // The RID should be incorporated into the SID

				if err != nil {
					err = msgp.WrapError(err, "SmallerThan")
					return
				}
				z.SmallerThan = nil
			} else {
				if z.SmallerThan == nil {
					z.SmallerThan = new(string)
				}
				*z.SmallerThan, err = dc.ReadString()
				if err != nil {
					err = msgp.WrapError(err, "SmallerThan")
					return
				}
			}
		case "SkipErrs":
			if dc.IsNil() {
				err = dc.ReadNil()

func isDirEmpty(dirname string, legacy bool) bool {
	if legacy {
		// On filesystems such as btrfs, nfs this is not true, so fallback
		// to performing readdir() instead.
		entries, err := readDirN(dirname, 1)
		if err != nil {
			return false
		}
		return len(entries) == 0
	}
	var stat syscall.Stat_t
	if err := syscall.Stat(dirname, &stat); err != nil {

				return
			}
		case "m":
			z.ScanMode, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "ScanMode")
				return
			}
		case "c":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "Cache")
					return
				}
				z.Cache = nil
			} else {
				if z.Cache == nil {
					z.Cache = new(dataUsageCache)
				}

				return
			}
		case "Started":
			z.Started, err = dc.ReadTime()
			if err != nil {
				err = msgp.WrapError(err, "Started")
				return
			}
		case "Replicate":
			if dc.IsNil() {
				err = dc.ReadNil()
				if err != nil {
					err = msgp.WrapError(err, "Replicate")
					return
				}
				z.Replicate = nil
			} else {
				if z.Replicate == nil {
					z.Replicate = new(BatchJobReplicateV1)
				}

	diffStats := getDiffStats(latestStats, currentStats)

	updateResourceMetrics(driveSubsystem, readsPerSec, float64(diffStats.ReadIOs)/diffInSeconds, labels, false)
	readKib := float64(diffStats.ReadSectors*sectorSize) / kib
	updateResourceMetrics(driveSubsystem, readsKBPerSec, readKib/diffInSeconds, labels, false)

	updateResourceMetrics(driveSubsystem, writesPerSec, float64(diffStats.WriteIOs)/diffInSeconds, labels, false)