On Thu, 15 Aug 2024 20:28:28 GMT, Dhamoder Nalla <dhana...@openjdk.org> wrote:

>> Use the GetTempPath2 APIs instead of the GetTempPath APIs in native code 
>> across the OpenJDK repository to retrieve the temporary directory path, as 
>> GetTempPath2 provides enhanced security. While GetTempPath may still 
>> function without errors, using GetTempPath2 reduces the risk of potential 
>> exploits for users.
>> 
>> 
>> The code to dynamically load GetTempPath2 is duplicated due to the following 
>> reasons.  I would appreciate any suggestions to remove the duplication where 
>> possible:
>> 
>> 1. The changes span across four different folders—java.base, jdk.package, 
>> jdk.attach, and hotspot—with no shared code between them.
>> 2. Some parts of the code use version A, while others use version W (ANSI 
>> vs. Unicode).
>> 3. Some parts of the code are written in C others in C++.
>
> Dhamoder Nalla has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   fix missing code

OK thanks, so the change only affects SYSTEM accounts, and such accounts 
already see a different temp path to non-SYSTEM accounts.

Newer and older Java versions run by a SYSTEM account will have different temp 
paths, therefore the hsperfdata_username will be in a different place.

(I was being picky about attach, but it's a universal thing which is expected 
to work across different Java versions.)

Do we have any apps commonly run as a Windows SYSTEM account which expect to 
attach to other Java apps run by a different Java version?  You're suggesting 
that will have no impact and agreed it would seem really unusual. 8-)

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PR Comment: https://git.openjdk.org/jdk/pull/20600#issuecomment-2343034670

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