sipeed/picoclaw · error

failed to create temp file: %w

Error message

failed to create temp file: %w

What it means

Error "failed to create temp file: %w" thrown in sipeed/picoclaw.

Source

Thrown at pkg/fileutil/file.go:66

//	err := utils.WriteFileAtomic("config.json", data, 0o600)
//
//	// Public readable file
//	err := utils.WriteFileAtomic("public.txt", data, 0o644)
func WriteFileAtomic(path string, data []byte, perm os.FileMode) error {
	dir := filepath.Dir(path)
	if err := os.MkdirAll(dir, 0o755); err != nil {
		return fmt.Errorf("failed to create directory: %w", err)
	}

	// Create temp file in the same directory (ensures atomic rename works)
	// Using a hidden prefix (.tmp-) to avoid issues with some tools
	tmpFile, err := os.OpenFile(
		filepath.Join(dir, fmt.Sprintf(".tmp-%d-%d", os.Getpid(), time.Now().UnixNano())),
		os.O_WRONLY|os.O_CREATE|os.O_EXCL,
		perm,
	)
	if err != nil {
		return fmt.Errorf("failed to create temp file: %w", err)
	}

	tmpPath := tmpFile.Name()
	cleanup := true

	defer func() {
		if cleanup {
			tmpFile.Close()
			_ = os.Remove(tmpPath)
		}
	}()

	// Write data to temp file
	// Note: Original file is untouched at this point
	if _, err := tmpFile.Write(data); err != nil {
		return fmt.Errorf("failed to write temp file: %w", err)
	}

View on GitHub (pinned to 49183d7e8d)

When it happens

Trigger: Thrown at pkg/fileutil/file.go:66 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of sipeed/picoclaw@49183d7e8d (2026-08-15). Data as JSON: /api/errors/e8820cc7434853d5. Report an issue: GitHub.