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Re: Linux ACLs

From: Mark . Burgess
Subject: Re: Linux ACLs
Date: Tue, 26 Oct 2004 21:33:31 +0200 (MEST)

On 26 Oct, Sven Mueller wrote:
> Philippe [u] wrote on 26/10/2004 20:39:
>>>Are you looking at the POSIX 1003.1e ACLs in the ext2/3 filesystem or SE
>>>Linux stuff?
>> I thought the Linux ACL followed the Posix recommendations. This was 
>> discussed a couple of weeks ago with Mark. I think Mark has considered 
>> looking the Linux ACL API seriously.
> There are two types of ACLs in Linux:
> 1) Filesystem ACLs, which should follow POSIX ACL recommendations
>     pretty closely.
> 2) Process ACLs (what resources process X of user Y is allowed to use)
>     which are a non-POSIX thing only available in SE Linux kernels
> I think Mark wanted to look at (1) but actually looked at (2). ;-)
> Not sure though, as I didn't write anything but scripts for ACLs (and 
> those only for (1)).
> cu,
> sven

What makes you think I looked at the wrong thing?
I was not looking at process ACLs or capabilites. The file ACL
stuff does not seem to make sense of itself. The best refs I
found are:

This disticnguishes NFS acls and posix acls but not clearly.

What I see is that these refer to <sys/acl.h> and a set of strange
API functions, but these files do not exist. Instead I find posixacl.h
and xattr.h which seem unrelated.


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