RFR: 8368846: java/io/File/createTempFile/TargetDirectory fails when run by root user [v2]

[Brian Burkhalter]

On Fri, 10 Oct 2025 00:42:38 GMT, Francesco Andreuzzi <fandreuzzi at openjdk.org> wrote:

>> The test checks whether writing to a read-only directory throws a `IOException`. This test is not applicable when the user running the test is root. Thus, I propose to skip it.
>> 
>> I converted the class to several JUnit tests, so we can use `@DisabledIf`.
>
> Francesco Andreuzzi has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains five additional commits since the last revision:
> 
>  - review
>  - Merge branch 'master' into JDK-8368846
>  - nn
>  - cc
>  - convert to junit and skip

Looks good now.

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Marked as reviewed by bpb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/27542#pullrequestreview-3321037364