Implement accept4 on Android as raw syscall. #1968
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @JohnTitor (or someone else) soon. If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes. Please see the contribution instructions for more information. |
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@bors r+ |
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📌 Commit 5bcac36 has been approved by |
Implement accept4 on Android as raw syscall. This PR implements `accept4()` on Android using `syscall()` instead of the `accept4()` wrapper. This is done because the `accept4()` wrapper wasn't added to Androids `libc` until version 5.0 (API level 21). By using `syscall` directly, `accept4` will also work on older Android versions. The kernel itself has supported it since Linux 2.6.28, which was shipped with stock Android since version 1.6 already: https://en.wikipedia.org/wiki/Android_version_history#Android_1.6_Donut_(API_4) At the moment, the CI for the rust repo still uses API level 14. Although I also opened a PR to bump that too: rust-lang/rust#78601. However, it might make sense to keep the old API level in CI if this is merged.
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💔 Test failed - checks-actions |
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Applied the suggestion :) Also had to remove the trailing comma from the argument list. Should I squash the commits? |
Yeah, r=me once it's done. |
This avoids relying on Android 5.0 / API level 21. The Linux kernel used by Android supports the syscall (except in truly ancient Android versions), but the Android libc did not expose a wrapper.
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Squashed :) @bors r=JohnTitor |
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@de-vri-es: 🔑 Insufficient privileges: Not in reviewers |
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Awh, bors didn't like that :( |
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Thanks! |
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📌 Commit 36affa2 has been approved by |
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☀️ Test successful - checks-actions, checks-cirrus-freebsd-11, checks-cirrus-freebsd-12, checks-cirrus-freebsd-13 |
This PR implements
accept4()on Android usingsyscall()instead of theaccept4()wrapper.This is done because the
accept4()wrapper wasn't added to Androidslibcuntil version 5.0 (API level 21). By usingsyscalldirectly,accept4will also work on older Android versions.The kernel itself has supported it since Linux 2.6.28, which was shipped with stock Android since version 1.6 already: https://en.wikipedia.org/wiki/Android_version_history#Android_1.6_Donut_(API_4)
At the moment, the CI for the rust repo still uses API level 14. Although I also opened a PR to bump that too: rust-lang/rust#78601. However, it might make sense to keep the old API level in CI if this is merged.