[abendrothj]

Closes #15335

FsCreateContext asked the policy for the default context of the name as given. The policy lists absolute names only, so a relative name matched nothing, the miss counted as "no default", and the new object kept the type it inherited from its parent. The name now goes through absolute_for_policy_lookup, as set_selinux_security_context already does for cp -Z.

Checked as root on Fedora 44 (enforcing) against GNU 9.12: mkdir -Z with a relative name, with -p, and with an absolute name now gets the same type. Added test_selinux_default_context_relative_name for mkdir and one for mkfifo. They run in cargo's target/tmp, where the SELinux CI job's policy has a default, and fail without the change there; where there's no default they skip.

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[codspeed]

Merging this PR will regress 1 benchmark

⚠️ 119 benchmarks spent significant time in system calls

System calls cannot be consistently instrumented, so they are not included in the measure, which understates the real cost. Please switch to the Walltime instrument to accurately measure system calls.

Measurement and system calls

• sort_numeric_utf8_locale
• dd_copy_partial
• cksum_multiple_files
• du_all_wide_tree[(5000, 500)]
• cksum_sysv
• df_deep_directory
• sort_unique_utf8_locale
• cksum_default
• dd_copy_1m_blocks
• b64_encode_synthetic
• …and 109 more

ℹ️ 1 benchmark has no flame graph

The flamegraph could not be generated because too much time was spent in runtime internals, making the visualization not useful for performance analysis.

• sort_dictionary_order[500000]

⚡ 2 improved benchmarks
❌ 1 regressed benchmark
✅ 398 untouched benchmarks
⏩ 70 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	factor_five_38_bit_primes	1.6 s	2 s	-17.03%
⚡	Simulation	factor_three_39_bit_primes	567 ms	291.9 ms	+94.26%
⚡	Simulation	factor_thirteen_39_bit_primes	9.5 s	9 s	+5.85%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing abendrothj:uucore-fscreate-relative-lookup (203d45c) with main (c76f272)}

Footnotes

1. 70 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

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[sylvestre]

Thanks for your PR