RFR: 8276661: (fs) UserDefinedFileAttributeView no longer works with long path (win) [v2]

[Alan Bateman]

On Thu, 18 Nov 2021 04:28:48 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> src/java.base/windows/classes/sun/nio/fs/WindowsPath.java line 313:
>> 
>>> 311:         if (!path.startsWith("\\\\")) {
>>> 312:             path = "\\\\?\\" + path;
>>> 313:         }
>> 
>> I think the approach looks okay but I wonder if we need to handle the UNC case here.
>
> Addressed in commit 01.

It would be a lot simpler to just add "addPrefix" that unconditionally adds the prefix. There should be no scenario where double translation happens, if it does then there's a bug and I'm concerned that addPrefixIfAbsent will mask it.

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PR: https://git.openjdk.java.net/jdk/pull/6435