if mountPoint.Type != sysfsDevice {
			continue
		}
		// Check whether sysfs is 'rw'
		if len(mountPoint.Opts) > 0 && mountPoint.Opts[0] == permWritable {
			return true, nil
		}
		logger.Error(nil, "Sysfs is not writable", "mountPoint", mountPoint, "mountOptions", mountPoint.Opts)
		return false, errReadOnlySysFS
	}

	return false, errors.New("no sysfs mounted")
}

func readIntStringFile(filename string) (int, error) {

}

// New creates a new cAdvisor Interface for linux systems.
func New(imageFsInfoProvider ImageFsInfoProvider, rootPath string, cgroupRoots []string, usingLegacyStats, localStorageCapacityIsolation bool) (Interface, error) {
	sysFs := sysfs.NewRealSysFs()

	includedMetrics := cadvisormetrics.MetricSet{
		cadvisormetrics.CpuUsageMetrics:     struct{}{},
		cadvisormetrics.MemoryUsageMetrics:  struct{}{},
		cadvisormetrics.CpuLoadMetrics:      struct{}{},

		return fmt.Errorf("losetup -d %s failed: %v", device, err)
	}
	return nil
}

// getLoopDeviceFromSysfs finds the backing file for a loop
// device from sysfs via "/sys/block/loop*/loop/backing_file".
func getLoopDeviceFromSysfs(path string) (string, error) {
	// If the file is a symlink.
	realPath, err := filepath.EvalSymlinks(path)
	if err != nil {

//	}
func (handler *deviceHandler) GetISCSIPortalHostMapForTarget(targetIqn string) (map[string]int, error) {
	portalHostMap := make(map[string]int)
	io := handler.getIo

	// Iterate over all the iSCSI hosts in sysfs
	sysPath := "/sys/class/iscsi_host"
	hostDirs, err := io.ReadDir(sysPath)
	if err != nil {
		if os.IsNotExist(err) {
			return portalHostMap, nil
		}
		return nil, err
	}

				if err != nil { // Mostly not found error
					// Check if there is a parent device:
					//   e.g. if the mount is based on /dev/nvme0n1p1, let's calculate the
					//        real device name (nvme0n1) to get its sysfs information
					parentDevPath, e := os.Readlink("/sys/class/block/" + devName)
					if e == nil {
						parentDev := filepath.Base(filepath.Dir(parentDevPath))
						qst, err = bfs.SysBlockDeviceQueueStats(parentDev)
					}

// Kubernetes app process.
package app

import (
	"context"
	"errors"
	"fmt"
	goruntime "runtime"
	"strings"
	"time"

	"github.com/google/cadvisor/machine"
	"github.com/google/cadvisor/utils/sysfs"

	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/fields"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/watch"

	featuregatetesting "k8s.io/component-base/featuregate/testing"
	"k8s.io/kubernetes/pkg/features"
	"k8s.io/kubernetes/pkg/volume/util/fsquota/common"
)

const dummyMountData = `sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
devtmpfs /dev devtmpfs rw,nosuid,size=6133536k,nr_inodes=1533384,mode=755 0 0
tmpfs /tmp tmpfs rw,nosuid,nodev 0 0

			},
			{
				Device: "/dev/hugepages",
				Type:   "hugetlbfs",
				Path:   "/mnt/hugepages-2Mi",
				Opts:   []string{"rw", "relatime", "pagesize=2Mi"},
			},
			{
				Device: "sysfs",
				Type:   "sysfs",
				Path:   "/sys",
				Opts:   []string{"rw", "nosuid", "nodev", "noexec", "relatime"},
			},
			{
				Device: "/dev/hugepages",
				Type:   "hugetlbfs",
				Path:   "/mnt/hugepages-1Gi",

```
~ mc admin config set alias/ heal
KEY:

// FD is a file descriptor. The net and os packages use this type as a
// field of a larger type representing a network connection or OS file.
type FD struct {
	// Lock sysfd and serialize access to Read and Write methods.
	fdmu fdMutex

	// System file descriptor. Immutable until Close.
	Sysfd int

	// Platform dependent state of the file descriptor.
	SysFile

	// I/O poller.
	pd pollDesc

	// Semaphore signaled when file is closed.