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DateWed, 05 Oct 2005 20:50:54 -0700
FromMarc Perkel <>
SubjectRe: what's next for the linux kernel?

Horst von Brand wrote:

>Marc Perkel <marc@perkel.com> wrote:
>
>[...]
>
> 
>
>>What you don't understand is that Netware's permissions mechanish is
>>totally different that Linux. A hard link in Netware wouldn't inherit
>>rights the way Linux does. So the user would have rights to their hard
>>link to delete that link without having rights to unlink the file.
>> 
>>
>
>OK, so a "hard link" isn't (because it has separate permissions than the
>original). Sorry, watered-down symlinks don't cut it. Or just by linking
>the file into my place I now have rights to modify it? The later idea makes
>my skin try to crawl away...
>
> 
>
>>This is an important concept so pay attention. Linux stores all the
>>permission to a file with that file entry.
>> 
>>
>
>You are completely right: This is an extremely central concept to
>everything Unix.
>
> 
>
>>                                           Netware doesn't. Netware
>>calculates effective rights from the parent directories and it is all
>>inherited unless files or directoies are explicitly set
>>differently. So if files are added to other people folders then those
>>people get rights to it automatically without having to go to the
>>second step of changing the file's permissions.
>> 
>>
>
>Which is a very clear explanation of how broken it all is. No wonder
>NetWare is no more. Files whose persmissions change depending on which way
>you look at them is a nightmare. Sure, you /can/ manage that for small(ish)
>setups by brute force, but it soon has to break down.
> 
>
If you all think Netware is no more you are under an interesting 
illusion. Linux being cheap has cut into the little server market - but 
if you have thousands of servers all running off the same shared 
permissions systems - you just aren't going to do that off of Linux.

-- 
Marc Perkel - marc@perkel.com

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    My Blog: http://marc.perkel.com

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