//  v5.1: pidfd_send_signal syscall;
//  v5.2: CLONE_PIDFD flag for clone syscall;
//  v5.3: pidfd_open syscall, clone3 syscall;
//  v5.4: P_PIDFD idtype support for waitid syscall;
//  v5.6: pidfd_getfd syscall.

package os

import (
	"errors"
	"internal/syscall/unix"
	"sync"
	"syscall"
	"unsafe"
)

func ensurePidfd(sysAttr *syscall.SysProcAttr) *syscall.SysProcAttr {
	if !pidfdWorks() {

| `minio_node_scanner_versions_scanned`      | Total number of object versions scanned since server start. |
| `minio_node_syscall_read_total`            | Total read SysCalls to the kernel. /proc/[pid]/io syscr.    |
| `minio_node_syscall_write_total`           | Total write SysCalls to the kernel. /proc/[pid]/io syscw.   |
| `minio_usage_last_activity_nano_seconds`   | Time elapsed (in nano seconds) since last scan activity.    |

# Bucket Metrics

			in := io.Reader(hashReader)
			if size > encryptBufferThreshold {
				// The encryption reads in blocks of 64KB.
				// We add a buffer on bigger files to reduce the number of syscalls upstream.
				in = bufio.NewReaderSize(hashReader, encryptBufferSize)
			}
			reader, err = sio.EncryptReader(in, sio.Config{Key: partEncryptionKey[:], CipherSuites: fips.DARECiphers()})
			if err != nil {

	if r.ContentLength > encryptBufferThreshold {
		// The encryption reads in blocks of 64KB.
		// We add a buffer on bigger files to reduce the number of syscalls upstream.
		content = bufio.NewReaderSize(content, encryptBufferSize)
	}

	var (
		key   []byte
		keyID string
		ctx   kms.Context
		err   error
	)
	kind, _ := crypto.IsRequested(r.Header)

		Name:      readTotal,
		Help:      "Total read SysCalls to the kernel. /proc/[pid]/io syscr",
		Type:      counterMetric,
	}
}

func getMinIOProcessSysCallWMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: sysCallSubsystem,
		Name:      writeTotal,
		Help:      "Total write SysCalls to the kernel. /proc/[pid]/io syscw",
		Type:      counterMetric,

				}
			}
		}
	}

	// Set skipParent to skip mkdirAll() calls for deeply nested objects
	// - if its an overwrite
	// - if its a versioned object
	//
	// This can potentiall reduce syscalls by strings.Split(path, "/")
	// times relative to the object name.
	skipParent := dstVolumeDir
	if len(dstBuf) > 0 {
		skipParent = pathutil.Dir(dstFilePath)
	}

	var reqVID string

	eventedPleg pleg.PodLifecycleEventGenerator

	// Store kubecontainer.PodStatus for all pods.
	podCache kubecontainer.Cache

	// os is a facade for various syscalls that need to be mocked during testing.
	os kubecontainer.OSInterface

	// Watcher of out of memory events.
	oomWatcher oomwatcher.Watcher

	// Monitor resource usage