8218418: (fs) Files.createSymbolicLink should use SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE (win)

[Alan Bateman]

On 29/03/2019 23:49, Brian Burkhalter wrote:
>
>> On Feb 15, 2019, at 12:24 AM, Alan Bateman <Alan.Bateman at oracle.com 
>> <mailto:Alan.Bateman at oracle.com>> wrote:
>>
>> On 15/02/2019 00:42, Brian Burkhalter wrote:
>>> https://bugs.openjdk.java.net/browse/JDK-8218418
>>>
>>> The proposed change below ran without error through the jdk_core 
>>> tests on Windows. Presumably it is covered sufficiently 
>>> bytest/jdk/java/nio/file/Files/Links.java so the issue could be 
>>> labelled noreg-other.
>> I think the fix looks okay but I think it needs checking in the 
>> different configurations (process has the privilege, does not have 
>> the privilege, and "developer mode") to be sure. This isn't something 
>> we can setup in the jtreg tests.
>
> As detailed in the comments I just added to the issue, I was able to 
> verify in Windows 10 that the flag works as desired: it allows a 
> standard user to create a symbolic link to an entity for which it has 
> permission provided that 
> the SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE flag is present and 
> Developer Mode is enabled. If this flag is not provided or Developer 
> Mode is not enabled, a standard user cannot create a symbolic link. 
> Therefore I think that the patch is good to go as-is.
>
Good, thanks for checking.

-Alan
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