nullByte = byte(0)
)

type scanner struct {
	pos       int64 // position in reader
	ipos      int64 // internal buffer position
	ifill     int64 // internal buffer fill
	end       int64
	buf       [chunk + 1]byte // internal buffer (with a lookback size of 1)
	nbuf      [chunk]byte     // next internal buffer
	fillReq   chan struct{}
	fillReady chan int64
	readerErr error // underlying reader error, if any
}

		fd, err = openFileWithFD(dirPath, os.O_RDONLY, 0o666)
		if err != nil {
			return nil, osErrToFileErr(err)
		}
	}
	defer syscall.Close(fd)

	bufp := direntPool.Get()
	defer direntPool.Put(bufp)
	buf := *bufp

	nameTmp := direntNamePool.Get()
	defer direntNamePool.Put(nameTmp)
	tmp := *nameTmp

	boff := 0 // starting read position in buf
	nbuf := 0 // end valid data in buf

	// Confirm that when Reader panics, the empty buffer remains empty
	var buf2 Buffer
	defer func() {
		recover()
		check(t, "TestReadFromPanicReader (2)", &buf2, "")
	}()
	buf2.ReadFrom(panicReader{panic: true})
}

func TestReadFromNegativeReader(t *testing.T) {
	var b Buffer
	defer func() {
		switch err := recover().(type) {
		case nil:
			t.Fatal("bytes.Buffer.ReadFrom didn't panic")
		case error:

func ReadFile(name string) ([]byte, error) {
	// Don't wrap with un-needed buffer.
	// Don't use os.ReadFile, since it doesn't pass NO_ATIME when present.
	f, err := OsOpenFile(name, readMode, 0o666)
	if err != nil {
		return nil, err
	}
	defer f.Close()
	st, err := f.Stat()
	if err != nil {
		return io.ReadAll(f)
	}
	dst := make([]byte, st.Size())

      val buffer = Buffer().writeString(this, charset)
      return buffer.asResponseBody(finalContentType, buffer.size)
    }

    /** Returns a new response body that transmits this byte array. */
    @JvmStatic
    @JvmName("create")
    fun ByteArray.toResponseBody(contentType: MediaType? = null): ResponseBody =
      Buffer()
        .write(this)

const DirectioAlignSize = 4096

// CopyAligned - copies from reader to writer using the aligned input
// buffer, it is expected that input buffer is page aligned to
// 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

		}
		wg.Add(1)
		go func(i int) {
			defer wg.Done()
			rr := p.readers[i]
			if rr == nil {
				// Since reader is nil, trigger another read.
				readTriggerCh <- true
				return
			}
			bufIdx := p.readerToBuf[i]
			if p.buf[bufIdx] == nil {
				// Reading first time on this disk, hence the buffer needs to be allocated.
				// Subsequent reads will reuse this buffer.
				p.buf[bufIdx] = make([]byte, p.shardSize)

	found := false
	if o.AuthToken == nil {
		return nil, fmt.Errorf("grid: AuthToken not set")
	}
	if o.Dialer == nil {
		return nil, fmt.Errorf("grid: Dialer not set")
	}
	if o.AuthFn == nil {
		return nil, fmt.Errorf("grid: AuthFn not set")
	}
	m := &Manager{
		ID:        uuid.New(),
		targets:   make(map[string]*Connection, len(o.Hosts)),
		local:     o.Local,

		// cycle back return 'true'
		return true
	}

	ctx = lkctx.Context()
	defer locker.Unlock(lkctx)

	// Perform callhome once and then keep running it at regular intervals.
	performCallhome(ctx)

	callhomeTimer := time.NewTimer(globalCallhomeConfig.FrequencyDur())
	defer callhomeTimer.Stop()

	for {
		if !globalCallhomeConfig.Enabled() {
			// Stop the processing as callhome got disabled

net.ipv4.tcp_sack=1

# Low latency mode for TCP
net.ipv4.tcp_low_latency=1

# The following variable is used to tell the kernel how 
# much of the socket buffer space should be used for TCP 
# window size, and how much to save for an application buffer.
net.ipv4.tcp_adv_win_scale=1

# disable RFC2861 behavior
net.ipv4.tcp_slow_start_after_idle = 0

# Fix faulty network setups
net.ipv4.tcp_mtu_probing=1