[LTP] lib: New library function tst_get_free_uid

[linuxtestproject.agent@gmail.com]

Hi Wei,

On Thu, 16 Apr 2026 00:55:23 +0000, Wei Gao via ltp wrote:
> [PATCH 2/2] open16: allow restricted O_CREAT of FIFOs and regular files
>
> This commit adds test cases to verify the security restrictions for opening
> FIFOs and regular files in world-writable sticky directories.

The body only describes what the test does, not why it is being added.
State the motivation explicitly, e.g. "Add LTP coverage for kernel commit
30aba6656f61 (Linux 4.19), which introduced protection against spoofing
attacks via O_CREAT of FIFOs and regular files in world-writable sticky
directories."

[...]

Regards,
LTP AI Reviewer

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