Worked on enhancing libkrun’s reliability by addressing a critical bug in the macOS virtio-fs passthrough implementation. Focused on file system correctness, the developer implemented inode-preserving rename handling to prevent dangling paths and ENOENT errors when files are renamed while still open, a common issue in package management workflows. The solution involved capturing the target file descriptor before rename and ensuring proper handoff to the displaced inode, aligning with do_unlink semantics to avoid file descriptor leaks. All changes were made in Rust, leveraging system programming expertise to improve maintainability and cross-platform stability within the containers/libkrun repository.