}

	return nil
}

// Reliably retries os.MkdirAll if for some reason os.MkdirAll returns
// syscall.ENOENT (parent does not exist).
func reliableMkdirAll(dirPath string, mode os.FileMode, baseDir string) (err error) {
	i := 0
	for {
		// Creates all the parent directories, with mode 0777 mkdir honors system umask.
		if err = osMkdirAll(dirPath, mode, baseDir); err != nil {

		// - object has not yet transitioned
		// - object size lesser than 128KiB
		// - object has maximum of 1 parts
		if fi.TransitionStatus == "" &&
			fi.DataDir != "" && fi.Size <= smallFileThreshold &&
			len(fi.Parts) == 1 {
			partPath := fmt.Sprintf("part.%d", fi.Parts[0].Number)
			dataPath := pathJoin(volumeDir, path, fi.DataDir, partPath)

	if err != nil {
		return nil, err
	}
	return data, nil
}

func StableXdsStatusCommand(ctx cli.Context) *cobra.Command {
	cmd := XdsStatusCommand(ctx)
	unstableFlags := []string{"xds-via-agents", "xds-via-agents-limit"}
	cmd.PreRunE = func(cmd *cobra.Command, args []string) error {
		for _, flag := range unstableFlags {
			if cmd.PersistentFlags().Changed(flag) {

	currTime := UTCNow()

	var (
		username = cred.AccessKey
		claims   = cred.Claims
		groups   = cred.Groups
	)

	if cred.IsTemp() || cred.IsServiceAccount() {
		// For derived credentials, check the parent user's permissions.
		username = cred.ParentUser
	}

	principalType := "Anonymous"
	if username != "" {
		principalType = "User"
		if len(claims) > 0 {
			principalType = "AssumedRole"
		}

		}
		responses = append(responses, response)
		if !all && len(responses) > 0 {
			break
		}
	}
	return responses, nil
}

// queryDebugSynczViaAgents sends a debug/syncz xDS request via Istio Agents.
// By this way, even if istioctl cannot access a specific `istiod` instance directly,
// `istioctl` can access the debug endpoint.
// If `all` is true, `queryDebugSynczViaAgents` iterates all the pod having a proxy

		if creds.IsTemp() && !creds.IsExpired() {
			var parentPolicy string
			u, err := globalIAMSys.GetUserInfo(ctx, creds.ParentUser)
			if err != nil {
				// Parent may be "virtual" (for ldap, oidc, client tls auth,
				// custom auth plugin), so in such cases we apply no parent
				// policy. The session token will contain info about policy to
				// be applied.
				if !errors.Is(err, errNoSuchUser) {

	signature := hex.EncodeToString(sumHMAC(signingKey, []byte(stringToSign)))

	// final Authorization header
	parts := []string{
		"AWS4-HMAC-SHA256" + " Credential=" + accessKey + SlashSeparator + scope,
		"SignedHeaders=" + signedHeaders,
		"Signature=" + signature,
	}
	auth := strings.Join(parts, ", ")
	req.Header.Set("Authorization", auth)

	return signature, nil
}

// Returns new HTTP request object.

	Msg []byte
	Err error
}

func newMuxClient(ctx context.Context, muxID uint64, parent *Connection) *muxClient {
	ctx, cancelFn := context.WithCancelCause(ctx)
	return &muxClient{
		MuxID:     muxID,
		ctx:       ctx,
		cancelFn:  cancelFn,
		parent:    parent,
		LastPong:  time.Now().Unix(),
		BaseFlags: parent.baseFlags,
	}
}

// roundtrip performs a roundtrip, returning the first response.

		// For STS accounts a policy is mapped to the parent user (if a mapping exists).
		err = store.loadMappedPolicy(ctx, cred.ParentUser, userType, false, cache.iamSTSPolicyMap)
	case svcUser:
		// For service accounts, the parent may be a regular (internal) IDP
		// user or a "virtual" user (parent of an STS account).
		//
		// If parent is a regular user => policy mapping is done on that parent itself.
		//

// Cancellation/timeouts are removed, so parent cancellations/timeout will
// not propagate from parent.
// Context values are preserved.
// This can be used for goroutines that live beyond the parent context.
func bgContext(parent context.Context) context.Context {
	return bgCtx{parent: parent}
}

type bgCtx struct {
	parent context.Context
}

func (a bgCtx) Done() <-chan struct{} {