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Subject: Re: Size limitation for NcFsd drive?
To: cygwin AT cygwin DOT com
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From: Franz Sirl <Franz DOT Sirl-kernel AT lauterbach DOT com>
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Date: Fri, 5 Aug 2016 16:57:04 +0200
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Am 2016-08-05 um 11:30 schrieb Corinna Vinschen:
> On Aug  4 20:31, Franz Sirl wrote:
>> Sorry for the delay, for some reason my users keep me busy with strange
>> bugs, see my answers below.
>
> I know what you mean :)
>
>> Am 2016-08-02 um 16:59 schrieb Corinna Vinschen:
>>> Hi Franz,
>>>
>>> On Aug  2 16:26, Franz Sirl wrote:
>>>> Nevertheless I believe the fallback to
>>>> NtQueryDirectoryFile(FileIdBothDirectoryInformation) does not do what you
>>>> want if the path is the root directory of a share. But that's not the cause
>>>> of this problem.
>>>
>>> Yeah, as I wrote in my reply, the NtQueryDirectoryFile branch isn't
>>> supposed to be hit in this scenario.  It's solely for "access denied"
>>> situations.
>>
>> Got it.
>>
>>> Are you set up to build your own Cygwin DLL so you can test the above
>>> patch locally?
>>
>> Not really, but since I've already created a few testcases for Novell now, I
>> have my own little "framework" using ntdll.dll directly. I added your code
>> to it and it showed:
>>
>> C:\NovellQueryAllInformationFile\Debug>NovellQueryAllInformationFile.exe t:\
>> NtQueryInformationFile(FileAllInformation) 't:\' resulted in errorcode
>> c7e90006, description: (no description)
>> Returned filename:  ''
>> NtQueryInformationFile(FileBasicInformation) 't:\' resulted in errorcode 0,
>> description: STATUS_WAIT_0
>> NtQueryInformationFile(FileStandardInformation) 't:\' resulted in errorcode
>> 0, description: STATUS_WAIT_0
>>
>> So your fallback will work nicely. No idea if it's worth it, because I'll
>> likely get an updated NCP client soon from Novell.
>
> Ok, thank you.  I applied a patch nevertheless, because we can never be
> really sure there won't be another filesystems with the same problem.
>
> I uploaded a new developer snapshot to https://cygwin.com/snapshots/
> which contains my fix.  It would be nice if you could give it a try.

Hi Corinna,

the snapshot fixes the problem nicely, thanks!

Franz



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