pwalk, pwalkdir: fix walk vs remove race#204
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rhatdan merged 2 commits intoopencontainers:mainfrom Sep 8, 2023
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rhatdan
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thaJeztah
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overall LGTM (nice!), but found 2 redundant defers, and left a suggestion.
don't think they're necessarily show-stoppers, but I'll let @kolyshkin have a look before merging 👍
Use t.Helper and t.Cleanup in prepareTestSet to simplify tests setup and cleanup (no need to call defer os.Remove or check error). Signed-off-by: Kir Kolyshkin <[email protected]>
In some cases, when file walk is racing with removal, the ENOENT is received by filepath.Walk[Dir], rather than by the callback. Do ignore such errors, except for the root directory (Walk argument). Modify the doc accordingly, and add a couple of test cases. The "Race" test case, when testing the code before the fix, fails 100% of times for pwalk and 90% for pwalkdir. Alas, I was unable to make it fail 100% of the times without significantly increasing the test complexity. Fixes: 199 Signed-off-by: Kir Kolyshkin <[email protected]>
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This PR contains the following updates: | Package | Change | Age | Confidence | |---|---|---|---| | [github.com/opencontainers/selinux](https://github.com/opencontainers/selinux) | `v1.11.0` -> `v1.12.0` | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>opencontainers/selinux (github.com/opencontainers/selinux)</summary> ### [`v1.12.0`](https://github.com/opencontainers/selinux/releases/tag/v1.12.0) [Compare Source](opencontainers/selinux@v1.11.1...v1.12.0) This release removes deprecated functions from the `label` package, and improves documentation and error reporting of `SetCreateKey`. #### What's Changed - VERSION: remove by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#217 - CI: add AlmaLinux 8, CentOS Stream 9, and Fedora by [@​AkihiroSuda](https://github.com/AkihiroSuda) in opencontainers/selinux#221 - ci: install git-core by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#224 - CI: add openSUSE Tumbleweed by [@​AkihiroSuda](https://github.com/AkihiroSuda) in opencontainers/selinux#223 - Bump Go version, deps, fix some linter issues... by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#218 - label: remove deprecated stuff by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#228 - Improve SetKeyCreate error reporting, fix test flakes by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#227 **Full Changelog**: opencontainers/selinux@v1.11.1...v1.12.0 ### [`v1.11.1`](https://github.com/opencontainers/selinux/releases/tag/v1.11.1) [Compare Source](opencontainers/selinux@v1.11.0...v1.11.1) #### What's Changed - Bump to v1.11.0 by [@​rhatdan](https://github.com/rhatdan) in opencontainers/selinux#197 - fix some error by [@​ningmingxiao](https://github.com/ningmingxiao) in opencontainers/selinux#200 - ci: update Go 1.21 support by [@​michalbiesek](https://github.com/michalbiesek) in opencontainers/selinux#202 - Extend `build-cross` target with `riscv64` arch by [@​michalbiesek](https://github.com/michalbiesek) in opencontainers/selinux#201 - Remove nolint annotations for unix errno comparisons by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#203 - ci: bump some actions by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#205 - Misc nitpicks by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#206 - pwalk, pwalkdir: fix walk vs remove race by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#204 - Update GitHub Actions CI Go matrix for Go v1.22 by [@​austinvazquez](https://github.com/austinvazquez) in opencontainers/selinux#209 - Update GitHub Actions packages to resolve deprecation warnings. by [@​austinvazquez](https://github.com/austinvazquez) in opencontainers/selinux#208 - Add dependabot config by [@​kolyshkin](https://github.com/kolyshkin) in opencontainers/selinux#210 - build(deps): bump tim-actions/get-pr-commits from 1.3.0 to 1.3.1 by [@​dependabot](https://github.com/dependabot) in opencontainers/selinux#211 - build(deps): bump golangci/golangci-lint-action from 4 to 6 by [@​dependabot](https://github.com/dependabot) in opencontainers/selinux#213 - Show SELinux label on failure by [@​rhatdan](https://github.com/rhatdan) in opencontainers/selinux#216 #### New Contributors - [@​ningmingxiao](https://github.com/ningmingxiao) made their first contribution in opencontainers/selinux#200 - [@​michalbiesek](https://github.com/michalbiesek) made their first contribution in opencontainers/selinux#202 - [@​dependabot](https://github.com/dependabot) made their first contribution in opencontainers/selinux#211 **Full Changelog**: opencontainers/selinux@v1.11.0...v1.11.1 </details> --- ### Configuration 📅 **Schedule**: Branch creation - 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In some cases, when file walk is racing with removal, the ENOENT is
received by filepath.Walk[Dir], rather than by the callback.
Do ignore such errors, except for the root directory (Walk argument).
Modify the doc accordingly, and add a couple of test cases.
The "Race" test case, when testing the code before the fix, fails 100%
of times for pwalk and 90% for pwalkdir. Alas, I was unable to make it
fail 100% of the times without significantly increasing the test
complexity.
Fixes: #199