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Date: Thu, 02 Nov 2006 10:56:39 -0800
From: Linda Walsh <cygwin AT tlinx DOT org>
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To: cygwin AT cygwin DOT com
Subject: Re: Cygwin NTFS permission listing oddness.
References: <45453F71 DOT 5040309 AT tlinx DOT org> <20061030094218 DOT GK8323 AT calimero DOT vinschen DOT de>
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You somewhat answered my question, indirectly. 
I wasn't aware windows had a "group" security descriptor
in addition to the user-owner-creator field. 
Where does it store the information? 

It seems odd to have a Windows group field that no Windows utils
would be able to set (or view).  Is the windows group field
actually used for anything?

    Either way it seems odd -- if the win-group field is used
for something, seems odd to have a security field that is unviewable
and unsettable under windows (except via 3rd party tools like cygwin).
If it isn't used for anything -- against seems weird to include a group
field that isn't used for anything. 

    My NT-Win knowledge is nowhere close to my *nix knowledge, but I just
didn't know of a windows-group field on files/processes, etc.  I thought
it was a "pseudo-security" field that only existed in cygwin and that
cygwin somehow simulated by, perhaps, storing the info in an ACL...?  

    I'm not able to find a reference to a file's groupid via google,
but I may not know the correct search terms.  Is there a reference
to the group field on MS's tech pages somewhere?

thanks,
Linda


Corinna Vinschen wrote:
> On Oct 29 15:55, Linda Walsh wrote:
>> I thought Cygwin derived it's user/group/permissions from the NT security
>> settings.  Is this not the case? 
>>     
> I don't understand the question.  Did you actually compare the (x)cacls
> output with the ls output?  It makes perfect sense, given especially
> that xcacls only prints the ACL, not owner and group of the file.
> Unfortunately I don't know any Windows system tool which prints the
> group information given in the security descriptor.
>
>
> Corinna
>
>   

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