RFR: 8355342: File.getCanonicalPath on Java 24 resolves paths on network drives to UNC format [v4]

[Brian Burkhalter]

On Wed, 17 Sep 2025 00:32:37 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> `File.getCanonicalPath` invokes `GetFinalPathNameByHandle` on the result of `canonicalize0` which causes the drive letter of a mapped drive to be converted to a UNC prefix. If such a substitution is detected, this request proposes to revert the conversion of drive letter to UNC prefix before returning the canonical path.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8355342: Corrected a comment

> [I]sn't there a config setting in smb.conf that controls this?

"This option is enabled (i.e. smbd will follow symbolic links) by default."

https://www.samba.org/samba/docs/current/man-html/smb.conf.5.html#FOLLOWSYMLINKS

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PR Comment: https://git.openjdk.org/jdk/pull/27324#issuecomment-3324772446