package cmd

import (
	"bytes"
	"fmt"
	"os"
	"strings"
	"sync"
	"syscall"
	"unsafe"

	"golang.org/x/sys/unix"
)

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

}

// DisableDirectIO - disables directio mode.
func DisableDirectIO(f *os.File) error {
	fd := f.Fd()
	flag, err := unix.FcntlInt(fd, unix.F_GETFL, 0)
	if err != nil {
		return err
	}
	flag &= ^(syscall.O_DIRECT)
	_, err = unix.FcntlInt(fd, unix.F_SETFL, flag)
	return err
}

// AlignedBlock - pass through to directio implementation.
func AlignedBlock(blockSize int) []byte {

Harshavardhana <******@****.***> 1632958828 -0700

Harshavardhana <******@****.***> 1629336922 -0700

Eng Zer Jun <******@****.***> 1658777846 +0800

			[]time.Time{
				time.Unix(0, 1).UTC(),
				time.Unix(0, 2).UTC(),
				time.Unix(0, 3).UTC(),
				time.Unix(0, 3).UTC(),
				time.Unix(0, 2).UTC(),
				time.Unix(0, 3).UTC(),
				time.Unix(0, 1).UTC(),
			},
			time.Unix(0, 3).UTC(),
			3,
		},
		{
			// 2. Tests common time obtained when all elements are equal.
			[]time.Time{
				time.Unix(0, 3).UTC(),
				time.Unix(0, 3).UTC(),

	"net"
	"syscall"
	"time"

	"golang.org/x/sys/unix"
)

func setTCPParametersFn(opts TCPOptions) func(network, address string, c syscall.RawConn) error {
	return func(network, address string, c syscall.RawConn) error {
		c.Control(func(fdPtr uintptr) {
			// got socket file descriptor to set parameters.
			fd := int(fdPtr)

			_ = unix.SetsockoptInt(fd, unix.SOL_SOCKET, unix.SO_REUSEADDR, 1)

}

func (r *ReplicationStats) getSRMetricsForNode() SRMetricsSummary {
	if r == nil {
		return SRMetricsSummary{}
	}

	m := SRMetricsSummary{
		Uptime:        UTCNow().Unix() - globalBootTime.Unix(),
		Queued:        r.qCache.getSiteStats(),
		ActiveWorkers: r.ActiveWorkers(),
		Metrics:       r.srStats.get(),
		Proxied:       r.pCache.getSiteStats(),

		{
			fis:            getNFInfo(16, 16, 1603863445, "36a21454-a2ca-11eb-bbaa-93a81c686f21", nil),
			modTime:        time.Unix(1603863445, 0),
			expectedErr:    nil,
			expectedQuorum: 8,
		},
		{
			fis:            getNFInfo(16, 7, 1603863445, "36a21454-a2ca-11eb-bbaa-93a81c686f21", nil),
			modTime:        time.Unix(1603863445, 0),
			expectedErr:    InsufficientReadQuorum{},
			expectedQuorum: 8,
		},
		{

func (l *ReplicationLastHour) addsize(sz int64) {
	min := time.Now().Unix() / 60
	l.forwardTo(min)
	winIdx := min % 60
	l.Totals[winIdx].merge(AccElem{Total: min, Size: sz, N: 1})
	l.LastMin = min
}

// Merge all recorded counts of last hour into one
func (l *ReplicationLastHour) getTotal() AccElem {
	var res AccElem
	min := time.Now().Unix() / 60
	l.forwardTo(min)
	for _, elem := range l.Totals[:] {