proc = builder.build();
            try {
                proc.start();
                assertFalse(startFails);
            } catch (ExecException e) {
                e.printStackTrace()
                assertTrue(startFails);
                return;
            }
            proc.getConnection().addIncoming(TestListenerInterface.class, exceptionListener);

	processIOReadBytesMD              = NewCounterMD(processIOReadBytes, "Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes")
	processIOWCharBytesMD             = NewCounterMD(processIOWCharBytes, "Total bytes written by the process to the underlying storage system including page cache, /proc/[pid]/io wchar")

//go:build !windows && !darwin

package pprof

import (
	"errors"
	"os"
)

// readMapping reads /proc/self/maps and writes mappings to b.pb.
// It saves the address ranges of the mappings in b.mem for use
// when emitting locations.
func (b *profileBuilder) readMapping() {
	data, _ := os.ReadFile("/proc/self/maps")
	parseProcSelfMaps(data, b.addMapping)
	if len(b.mem) == 0 { // pprof expects a map entry, so fake one.

}

// gets /proc/swaps's content as an input, returns true if swap is enabled.
func isSwapOnAccordingToProcSwaps(procSwapsContent []byte) bool {
	procSwapsContent = bytes.TrimSpace(procSwapsContent) // extra trailing \n
	procSwapsStr := string(procSwapsContent)
	procSwapsLines := strings.Split(procSwapsStr, "\n")

	// If there is more than one line (table headers) in /proc/swaps then swap is enabled

// license that can be found in the LICENSE file.

package os

import (
	"runtime"
	"syscall"
)

func hostname() (name string, err error) {
	// Try uname first, as it's only one system call and reading
	// from /proc is not allowed on Android.
	var un syscall.Utsname
	err = syscall.Uname(&un)

	var buf [512]byte // Enough for a DNS name.
	for i, b := range un.Nodename[:] {
		buf[i] = uint8(b)
		if b == 0 {

	"os"
	"regexp"
	"testing"
)

func getFeatureList() ([]string, error) {
	cpuinfo, err := os.ReadFile("/proc/cpuinfo")
	if err != nil {
		return nil, err
	}
	r := regexp.MustCompile("features\\s*:\\s*(.*)")
	b := r.FindSubmatch(cpuinfo)
	if len(b) < 2 {
		return nil, errors.New("no feature list in /proc/cpuinfo")
	}
	return regexp.MustCompile("\\s+").Split(string(b[1]), -1), nil
}

wget https://dl.min.io/server/minio/release/linux-amd64/minio -O /mnt/export/${USER}/bin/minio
chmod +x /mnt/export/${USER}/bin/minio
```

Bind your `proc` mount to the target chroot directory

```
sudo mount --bind /proc /mnt/export/${USER}/proc
```

## 3. Run Standalone MinIO in Chroot

### GNU/Linux

```sh

// license that can be found in the LICENSE file.

package event

// SchedReqs is a set of constraints on what the scheduling
// context must look like.
type SchedReqs struct {
	Thread    Constraint
	Proc      Constraint
	Goroutine Constraint
}

// Constraint represents a various presence requirements.
type Constraint uint8

const (
	MustNotHave Constraint = iota
	MayHave
	MustHave
)

func executable() (string, error) {
	var procfn string
	switch runtime.GOOS {
	default:
		return "", errors.New("Executable not implemented for " + runtime.GOOS)
	case "linux", "android":
		procfn = "/proc/self/exe"
	case "netbsd":
		procfn = "/proc/curproc/exe"
	}
	path, err := Readlink(procfn)

	// When the executable has been deleted then Readlink returns a
	// path appended with " (deleted)".

// one.

import (
	"bytes"
	"debug/elf"
	"os"
	"testing"
)

func testBuildID(t *testing.T) {
	f, err := elf.Open("/proc/self/exe")
	if err != nil {
		if os.IsNotExist(err) {
			t.Skip("no /proc/self/exe")
		}
		t.Fatal("opening /proc/self/exe: ", err)
	}
	defer f.Close()

	c := 0
sections:
	for i, s := range f.Sections {
		if s.Type != elf.SHT_NOTE {
			continue
		}