fix: remove TOCTOU race in RunState.load - #3839
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Pull request overview
Removes the TOCTOU race when loading persisted workflow state.
Changes:
- Opens
state.jsondirectly. - Converts missing-file failures into the existing domain-specific error.
Show a summary per file
| File | Description |
|---|---|
src/specify_cli/workflows/engine.py |
Replaces exists() followed by open() with exception-based handling. |
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| state_path = runs_dir / "state.json" | ||
| if not state_path.exists(): | ||
|
|
||
| try: |
Remove exists() check before open() and catch FileNotFoundError directly. This prevents a race where the file is deleted between check and open, while preserving the descriptive error message.
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Summary
Remove
exists()check beforeopen()and catchFileNotFoundErrordirectly to prevent TOCTOU race.Changes
engine.py: Replaced exists()+open() with open() wrapped in try/except FileNotFoundError