uidmap = formatIDMappings(sys.UidMappings)
	}

	if sys.GidMappings != nil {
		psetgroups = []byte("/proc/self/setgroups\000")
		pgid = []byte("/proc/self/gid_map\000")

		if sys.GidMappingsEnableSetgroups {
			setgroups = []byte("allow\000")
		} else {
			setgroups = []byte("deny\000")
		}
		gidmap = formatIDMappings(sys.GidMappings)
	}

		},
		GidMappingsEnableSetgroups: setgroups,
	}
	return cmd
}

func TestCloneNEWUSERAndRemap(t *testing.T) {
	for _, setgroups := range []bool{false, true} {
		setgroups := setgroups
		t.Run(fmt.Sprintf("setgroups=%v", setgroups), func(t *testing.T) {
			uid := os.Getuid()
			gid := os.Getgid()

			cmd := whoamiNEWUSER(t, uid, gid, setgroups)
			out, err := cmd.CombinedOutput()

		{call: "Setgroups([]int{0,1,2,3})", fn: func() error { return syscall.Setgroups([]int{0, 1, 2, 3}) }, filter: "Groups:", expect: "\t0 1 2 3"},
		{call: "Setgroups(nil)", fn: func() error { return syscall.Setgroups(nil) }, filter: "Groups:", expect: ""},
		{call: "Setgroups([]int{0})", fn: func() error { return syscall.Setgroups([]int{0}) }, filter: "Groups:", expect: "\t0"},

	if err == nil {
		i := 0
		for buf[i] != 0 {
			i++
		}
		n = i + 1
	}
	return
}

//sysnb	getgroups(ngid int, gid *_Gid_t) (n int, err error)
//sysnb	setgroups(ngid int, gid *_Gid_t) (err error)

func Getgroups() (gids []int, err error) {
	n, err := getgroups(0, nil)
	if err != nil {
		return nil, err
	}
	if n == 0 {
		return nil, nil
	}

            setThreadPoolFactoryClass(testNg, spec.getThreadPoolFactoryClass());
        }

        testNg.setUseDefaultListeners(spec.getUseDefaultListeners());
        testNg.setVerbose(0);
        testNg.setGroups(CollectionUtils.join(",", spec.getIncludeGroups()));
        testNg.setExcludedGroups(CollectionUtils.join(",", spec.getExcludeGroups()));

        // Adding custom test listeners before Gradle's listeners.

	for i, v := range a[0:n] {
		gids[i] = int(v)
	}
	return
}

func Setgroups(gids []int) (err error) {
	if len(gids) == 0 {
		return setgroups(0, nil)
	}

	a := make([]_Gid_t, len(gids))
	for i, v := range gids {
		a[i] = _Gid_t(v)
	}
	return setgroups(len(a), &a[0])
}

func gettid() uint64

func Gettid() (tid int) {
	return int(gettid())

func setgroups(ngid int, gid *_Gid_t) (err error) {
	_, _, e1 := rawSyscall(abi.FuncPCABI0(libc_setgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_setgroups_trampoline()

//go:cgo_import_dynamic libc_setgroups setgroups "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

//go:cgo_import_dynamic libc_unlinkat unlinkat "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getcwd getcwd "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getgroups getgroups "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_setgroups setgroups "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_getdirent getdirent "libc.a/shr_64.o"
//go:cgo_import_dynamic libc_wait4 wait4 "libc.a/shr_64.o"

func setgroups(ngid int, gid *_Gid_t) (err error) {
	_, _, e1 := rawSyscall(abi.FuncPCABI0(libc_setgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_setgroups_trampoline()

//go:cgo_import_dynamic libc_setgroups setgroups "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func setgroups(ngid int, gid *_Gid_t) (err error) {
	_, _, e1 := rawSyscall(abi.FuncPCABI0(libc_setgroups_trampoline), uintptr(ngid), uintptr(unsafe.Pointer(gid)), 0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_setgroups_trampoline()

//go:cgo_import_dynamic libc_setgroups setgroups "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT