Non-UNIX permission models (resent)

yves.lejeune at yves.lejeune at
Fri Sep 30 12:27:07 GMT 2005

> I've thought about what we would need to change in the kernel in order 
> allow non-UNIX permission models on some filesystems/mounts, and I've 
> discussed this with SUSE folks at the SUSE Labs conference in Prague 
> yesterday. Surprisingly, nobody seemed to be strongly opposed to what I 
> presented, rather the opposite. Samba is the most prominent potential 
user of 
> non-UNIX permission models on Linux as far as I can see, so I would like 
> discuss the topic with you.

Hello Andreas,

I am wondering if you would be interested too in modifying the VFS layer
to provide non-case-sensitive operations - at least a "casestat" 
This can greatly enhance the performance of Samba when large directories
are present. I have myself added such a "casestat" operation in my Samba 
VFS module.
The difficult point then is to take it into account in the Samba code,
e.g. I was able to update filename.c, but I gave up for 

Best regards,
Yves Lejeune

Software Architect
Information Management Solutions R&D
Health Group, Eastman Kodak Company

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