type specVal struct {
		ref     statsapi.UserDefinedMetricDescriptor
		valType cadvisorapiv1.DataType
		time    time.Time
		value   float64
	}
	udmMap := map[string]*specVal{}
	for _, spec := range info.Spec.CustomMetrics {
		udmMap[spec.Name] = &specVal{
			ref: statsapi.UserDefinedMetricDescriptor{
				Name:  spec.Name,
				Type:  statsapi.UserDefinedMetricType(spec.Type),
				Units: spec.Units,
			},

	}
}

func formatIDMappings(idMap []SysProcIDMap) []byte {
	var data []byte
	for _, im := range idMap {
		data = append(data, itoa.Itoa(im.ContainerID)+" "+itoa.Itoa(im.HostID)+" "+itoa.Itoa(im.Size)+"\n"...)
	}
	return data
}

// writeIDMappings writes the user namespace User ID or Group ID mappings to the specified path.
func writeIDMappings(path string, idMap []SysProcIDMap) error {

// Holds a map of recently logged errors.
type logOnceType struct {
	IDMap map[string]onceErr
	sync.Mutex
}

func (l *logOnceType) logOnceConsoleIf(ctx context.Context, subsystem string, err error, id string, errKind ...interface{}) {
	if err == nil {
		return
	}

	nerr := unwrapErrs(err)
	l.Lock()
	shouldLog := true
	prev, ok := l.IDMap[id]
	if !ok {
		l.IDMap[id] = onceErr{
			Err:   nerr,
			Count: 1,
		}

	ipToInsert := ip.Unmap()

	// We have already Unmap'd, so we can do a simple IsV6 y/n check now
	if ipToInsert.Is6() {
		return m.Deps.addIP(m.V6Name, ipToInsert, ipProto, comment, replace)
	}
	return m.Deps.addIP(m.V4Name, ipToInsert, ipProto, comment, replace)
}

func (m *IPSet) DeleteIP(ip netip.Addr, ipProto uint8) error {
	ipToDel := ip.Unmap()

}

func podsMapToPods(UIDMap map[kubetypes.ResolvedPodUID]*v1.Pod) []*v1.Pod {
	pods := make([]*v1.Pod, 0, len(UIDMap))
	for _, pod := range UIDMap {
		pods = append(pods, pod)
	}
	return pods
}

func mirrorPodsMapToMirrorPods(UIDMap map[kubetypes.MirrorPodUID]*v1.Pod) []*v1.Pod {
	pods := make([]*v1.Pod, 0, len(UIDMap))
	for _, pod := range UIDMap {
		pods = append(pods, pod)
	}
	return pods

			return project.id, false, nil
		}
		idMap[project.id] = true
	}
	var needToAddProjid = true
	for _, projid := range list.projid {
		idMap[projid.id] = true
		if projid.id == id && id != common.BadQuotaID {
			needToAddProjid = false
		}
	}
	var err error
	if id == common.BadQuotaID {
		id, err = findAvailableQuota(path, idMap)
		if err != nil {
			return common.BadQuotaID, false, err

		minPartSz = int64(5) * humanize.MiByte
		maxPartSz = int64(5) * humanize.GiByte

		getEncSize = func(s int64) int64 {
			v, _ := sio.EncryptedSize(uint64(s))
			return int64(v)
		}
		udMap = func(isMulti bool) map[string]string {
			m := map[string]string{
				crypto.MetaAlgorithm: crypto.InsecureSealAlgorithm,
				crypto.MetaMultipart: "1",
			}
			if !isMulti {
				delete(m, crypto.MetaMultipart)

		"(*uint128).halves",
		"Addr.BitLen",
		"Addr.hasZone",
		"Addr.Is4",
		"Addr.Is4In6",
		"Addr.Is6",
		"Addr.IsInterfaceLocalMulticast",
		"Addr.IsValid",
		"Addr.IsUnspecified",
		"Addr.Less",
		"Addr.Unmap",
		"Addr.Zone",
		"Addr.v4",
		"Addr.v6",
		"Addr.v6u16",
		"Addr.withoutZone",
		"AddrPortFrom",
		"AddrPort.Addr",
		"AddrPort.Port",
		"AddrPort.IsValid",
		"Prefix.IsSingleIP",
		"Prefix.Masked",

	if runtime.GOOS == "linux" {
		mmapLimit = 30000
	}
}

func (r *Reader) sliceOS(length uint64) ([]byte, bool) {
	// For small slices, don't bother with the overhead of a
	// mapping, especially since we have no way to unmap it.
	const threshold = 16 << 10
	if length < threshold {
		return nil, false
	}

	// Have we reached the mmap limit?
	if atomic.AddInt32(&mmapLimit, -1) < 0 {
		atomic.AddInt32(&mmapLimit, 1)

// (ref: https://github.com/torvalds/linux/commit/35dfb013149f74c2be1ff9c78f14e6a3cd1539d1)
const IPVSConnReuseModeFixedKernelVersion = "5.9"

// UserNamespacesSupportKernelVersion is the kernel version where idmap for tmpfs support was added
// (ref: https://github.com/torvalds/linux/commit/05e6295f7b5e05f09e369a3eb2882ec5b40fff20)
const UserNamespacesSupportKernelVersion = "6.3"