n, err = getgroups(n, &a[0])
	if err != nil {
		return nil, err
	}
	gids = make([]int, n)
	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])
}

	n, err = getgroups(n, &a[0])
	if err != nil {
		return nil, err
	}
	gids = make([]int, n)
	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])
}

	nsec := nsec()
	*tv = NsecToTimeval(nsec)
	return nil
}

func Getegid() (egid int) { return -1 }
func Geteuid() (euid int) { return -1 }
func Getgid() (gid int)   { return -1 }
func Getuid() (uid int)   { return -1 }

func Getgroups() (gids []int, err error) {
	return make([]int, 0), nil
}

//sys	open(path string, mode int) (fd int, err error)

func Open(path string, mode int) (fd int, err error) {

		if cl.SecurityContext.NamespaceOptions.UsernsOptions != nil {
			for _, mount := range config.Mounts {
				mount.UidMappings = cl.SecurityContext.NamespaceOptions.UsernsOptions.Uids
				mount.GidMappings = cl.SecurityContext.NamespaceOptions.UsernsOptions.Gids
			}
		}
	}
	return nil
}

// generateLinuxContainerConfig generates linux container config for kubelet runtime v1.

message RunAsGroupStrategyOptions {
  // rule is the strategy that will dictate the allowable RunAsGroup values that may be set.
  optional string rule = 1;

  // ranges are the allowed ranges of gids that may be used. If you would like to force a single gid
  // then supply a single range with the same start and end. Required for MustRunAs.
  // +optional
  repeated IDRange ranges = 2;
}

func Chown(path string, uid int, gid int) (err error)  { return EWINDOWS }
func Lchown(path string, uid int, gid int) (err error) { return EWINDOWS }
func Fchown(fd Handle, uid int, gid int) (err error)   { return EWINDOWS }

func Getuid() (uid int)                  { return -1 }
func Geteuid() (euid int)                { return -1 }
func Getgid() (gid int)                  { return -1 }

func Chown(path string, uid int, gid int) (err error)  { return syscall.EWINDOWS }
func Lchown(path string, uid int, gid int) (err error) { return syscall.EWINDOWS }
func Fchown(fd Handle, uid int, gid int) (err error)   { return syscall.EWINDOWS }

func Getuid() (uid int)                  { return -1 }
func Geteuid() (euid int)                { return -1 }
func Getgid() (gid int)                  { return -1 }

}

// getKubeletMappings returns the range of IDs that can be used to configure user namespaces.
// If subordinate user or group ID ranges are specified for the kubelet user and the getsubids tool
// is installed, then the single mapping specified both for user and group IDs will be used.
// If the tool is not installed, or there are no IDs configured, the default mapping is returned.

}

func TestPidOf(t *testing.T) {
	if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
		t.Skipf("not supported on GOOS=%s", runtime.GOOS)
	}
	pids, err := PidOf(filepath.Base(os.Args[0]))
	assert.Empty(t, err)
	assert.NotZero(t, pids)
	assert.Contains(t, pids, os.Getpid())
}

func TestPKill(t *testing.T) {
	if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
		t.Skipf("not supported on GOOS=%s", runtime.GOOS)

		return fmt.Errorf("name should not be empty")
	}
	re, err := regexp.Compile(name)
	if err != nil {
		return err
	}
	pids := getPids(re)
	if len(pids) == 0 {
		return fmt.Errorf("unable to fetch pids for process name : %q", name)
	}
	errList := []error{}
	for _, pid := range pids {
		if err = syscall.Kill(pid, sig); err != nil {
			errList = append(errList, err)
		}
	}
	return utilerrors.NewAggregate(errList)
}