}
	t.Cleanup(func() {
		_, _, err1 := syscall.Syscall(syscall.SYS_JAIL_REMOVE, id, 0, 0)
		if err1 != 0 {
			t.Errorf("failed to cleanup jail: %v", err)
		}
	})

	return int(id), root
}

func TestJailAttach(t *testing.T) {
	if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
		jailed, err := syscall.SysctlUint32("security.jail.jailed")
		if err != nil {
			fmt.Fprintln(os.Stderr, err)
			os.Exit(2)
		}
		if jailed != 1 {