RFR: 7038105 - File.isHidden() should return true for pagefile.sys and hiberfil.sys

Alan Bateman Alan.Bateman at oracle.com
Fri May 24 15:48:57 UTC 2013

On 24/05/2013 16:11, Rob McKenna wrote:
> Thanks Alan,
> Updated webrev at: http://cr.openjdk.java.net/~robm/7038105/webrev.02/
>     -Rob
This looks much better except that I assume it should only fallback to 
FindFirstFileW if the error is ERROR_SHARING_VIOLATION. If I read it 
correctly then it will do the fallback for every error, say the file 
doesn't exist.


> On 14/05/13 12:21, Alan Bateman wrote:
>> On 14/05/2013 02:59, Rob McKenna wrote:
>>> Hi folks,
>>> Looking for a review of this suggested fix from Fujitsu. 
>>> GetFileAttributesExW() returns ERROR_SHARING_VIOLATION for 
>>> pagefile.sys and hiberfi.sys so we're falling back to FindFirstFile 
>>> instead:
>>> http://cr.openjdk.java.net/~robm/7038105/webrev.01/
>>>     -Rob
>> Thanks for taking this one and removed the crud that is the harding 
>> of c:\pagefile.sys.
>> Using FindFirstFile when GetFileAttributesExW fails when 
>> ERROR_SHARING_VIOLATION is the right approach but it needs an 
>> additional check on the attributes to see if they contain a reparse 
>> point, otherwise you return the attributes of the reparse point 
>> rather than the final file (try it with a symbolic link and you'll 
>> see what I mean). When it contains a reparse point then you can use 
>> getFileInformation to attempt to open the file (with sharing) and 
>> obtain the attributes.
>> One other idea is to rename it to getFinalAttributes and move it up 
>> to near the top so that it's with the other support functions.
>> -Alan.

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