RFR: 8308678: (fs) UnixPath::toRealPath needs additional permissions when running with SM (macOS) [v4]

[Brian Burkhalter]

On Sat, 27 May 2023 07:54:41 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> * The code to traverse from the root down should move to a separate method and be called in a doPrivileged block. The SM permission checks that are specified by the method are already done at the top of the method.

I had thought of this approach initially but decided against it.

> * Replace provider.newDirectoryStream with direct use of UnixDirectoryStream. This would be my preferred option to avoid code in the implementation make use of the API that is implements.

Will investigate.

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PR Comment: https://git.openjdk.org/jdk/pull/14157#issuecomment-1568749471