"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
		}

	if err != nil {
		t.Skipf("skipped because sh is not available")
	}

	attr := &os.ProcAttr{
		Sys: &syscall.SysProcAttr{
			Ptrace: true,
		},
	}
	proc, err := os.StartProcess(bin, []string{bin}, attr)
	if err == nil {
		proc.Kill()
	}
	if err != nil && !os.IsPermission(err) {
		t.Fatalf("StartProcess with ptrace enabled failed: %v", err)
	}

}

func TestGenerateCommandParse(t *testing.T) {
	dir := filepath.Join(testenv.GOROOT(t), "src", "sys")
	g := &Generator{
		r:        nil, // Unused here.
		path:     filepath.Join(dir, "proc.go"),
		dir:      dir,
		file:     "proc.go",
		pkg:      "sys",
		commands: make(map[string][]string),
	}
	g.setEnv()
	g.setShorthand([]string{"-command", "yacc", "go", "tool", "yacc"})
	for _, test := range splitTests {

		return fmt.Errorf("expected no thread but had one")
	}

	// Check proc requirements.
	if reqs.Proc == event.MustHave && ctx.P == NoProc {
		return fmt.Errorf("expected a proc but didn't have one")
	} else if reqs.Proc == event.MustNotHave && ctx.P != NoProc {
		return fmt.Errorf("expected no proc but had one")
	}

	// Check goroutine requirements.

    # take much longer than the others, but it should help.
    proc=$((proc - 1))
    if [[ proc -eq 0 ]]; then
      proc=${max_dump_processes}
      wait
    fi
  done
  # Wait for any remaining processes.
  if [[ proc -gt 0 && proc -lt ${max_dump_processes} ]]; then
    wait
  fi
}

            builder.javaCommand.jvmArgs(jvmArgs)

            proc = builder.build()
            try {
                proc.start()
                assertFalse(startFails)
            } catch (ExecException e) {
                if (!startFails) {
                    throw new AssertionError(e)
                }
                return
            }
            proc.connection.addIncoming(TestListenerInterface.class, exceptionListener)