Fix races on temporary file copies#616
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fweikert merged 3 commits intobazelbuild:masterfrom Oct 9, 2024
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sushain97
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Sep 30, 2024
| if err != nil { | ||
| return fmt.Errorf("failed to create temporary file in %s: %w", parent, err) | ||
| } | ||
| defer os.Remove(tmpFile.Name()) |
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This is a no-op unless the write fails and the rename never happens.
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@fweikert 👋 anything I can help with to get this PR merged? |
fweikert
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Oct 9, 2024
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Thank you! |
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Hi, when should we expect a release with this change? |
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1 task
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Thanks! |
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When two instances of Bazelisk are running concurrently and downloading Bazel, the current code admits a race. This patch fixes the issue by using randomly named files for temporary paths.
For example: