Developed cross-platform extended attribute (xattr) support for container images, focusing on FreeBSD integration within the containers/container-libs and containers/storage repositories. Leveraged Go and system programming skills to implement FreeBSD-specific xattr wrappers and syscalls, enabling consistent get, set, and list operations across Linux, macOS, and FreeBSD. Refactored error handling logic to harmonize platform-specific codes, removing unreachable error paths and aligning error responses for improved reliability. Enhanced file system operations during image layer unpacking, reducing platform-specific maintenance and enabling smoother cross-platform deployments. The work emphasized code refactoring, cross-platform compatibility, and robust error handling to ensure portable, maintainable container storage solutions.