RFR: 8360887: (fs) Files.getFileAttributeView returns unusable FileAttributeView if UserDefinedFileAttributeView unavailable (aix) [v3]

[Brian Burkhalter]

On Mon, 30 Jun 2025 13:00:20 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> We need to fix this wrong behavior on AIX and the test should catch it. Please review!
>> 
>> Returning null is required: https://github.com/openjdk/jdk/blob/c2d76f9844aadf77a0b213a9169a7c5c8c8f1ffb/src/java.base/share/classes/java/nio/file/spi/FileSystemProvider.java#L924
>
> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Move test to FileStore/Basic.java.

test/jdk/java/nio/file/FileStore/Basic.java line 110:

> 108:             store1.supportsFileAttributeView(UserDefinedFileAttributeView.class));
> 109: 
> 110:         // check if getFileAttributeView behaves as specified if the used defined view is unsupported

used -> user

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PR Review Comment: https://git.openjdk.org/jdk/pull/26021#discussion_r2175806707