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- Replace atomic write (temp file + rename) with direct file write - Source files always exist, so damaged targets can be recovered via re-sync - Reduces code complexity from ~60 lines to ~20 lines Closes #19
Summary of ChangesHello @laggu, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! 이 Pull Request는 Highlights
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Code Review
This PR simplifies the copyFile function by removing complex atomic write logic. However, this change introduces a high-severity security vulnerability, making the application susceptible to symlink following attacks and breaking file permission synchronization for existing files. It is strongly recommended to address these security concerns, potentially by reverting to the atomic write implementation or implementing explicit checks. Additionally, consider improving error handling in defer statements and wrapping errors according to the style guide for better code stability and clarity.
- Merge copyDirNoSymlink, copyDirNoSymlinkWithForce, copyDirNoSymlinkRecursive into single function - Update call sites in add.go and sync.go
- Return Close() error instead of ignoring it in defer - Add code review guidelines to .gemini/styleguide.md
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/gemini review |
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Code Review
This PR simplifies the logic of the copyFile function, reducing code complexity by moving from a temporary file and rename approach to direct writing. While this change is a positive refactoring, it introduces a critical security regression. The new copyFile implementation no longer prevents overwriting symbolic link targets, meaning it could follow symbolic links at the destination and potentially allow arbitrary file overwrites if a symbolic link is present. This issue is exacerbated by syncCopy (line 109) using os.Stat instead of os.Lstat, which incorrectly identifies symlinks. Additionally, the error handling within the new copyFile function violates the repository's style guide. Addressing these security and style concerns is crucial for robustness and security.
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Summary
Changes
internal/gitvolume/fs.go:copyFile()함수 단순화Trade-off
sync재실행결정 근거: 소스가 항상 원본으로 존재하므로 복잡한 보호 로직 불필요
Testing
go test ./...통과go build성공Closes #19