| commit | eb762d4e7431637e607146b1c191485795047ef9 | [log] [tgz] |
|---|---|---|
| author | ajurkowski <ajurkowski@google.com> | Wed Jan 13 10:22:00 2021 -0800 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed Jan 13 10:23:12 2021 -0800 |
| tree | ad63ed261d25782acc41c1ff02a228b75b718c11 | |
| parent | a607d9dc70ac67f1aa2c32ca954177f9c77860be [diff] |
Fix racy write of temporary files while staging virtual inputs for the sandbox. When staging virtual inputs without delayed materialization, `SandboxHelpers` performs atomic writes by first staging virtual inputs into a temporary file and later moving it to the target destination. This is achieved by performing the initial writes into a file with a uniquifying suffix. This suffix happens to currently always be hardcoded to `.sandbox`, which means that staging the same virtual inputs for 2 actions may race on that. Fix the race condition by providing a truly unique suffix for the temporary file. PiperOrigin-RevId: 351613739
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