Idea related to UNIX directories

[Peter Pentchev]

On Tue, Apr 08, 2003 at 09:26:22AM +0200, Steffen Mazanek wrote:
> Hello,
> 
> at first I have to say, that I am new to this
> mailing list and if my proposal is absurde please
> don't plonk me :-) I am no kernel freak and so
> I can not implement the following idea.
> 
> I think it would be quit useful to allow some 
> code to be related to e.g. the i-nodes of directories.
> Consider therefore an example. At first, all
> directories have a default assignment to save
> memory. This default assignment may realize
> permission related stuff. Now some privileged users
> have the permission to add their own code, which
> must implement an interface and some standard 
> functions and in addition they are able to trigger
> some events, e.g. write something to a log-file
> whenever a user enters the directory or start 
> an application.
> 
> What do you think about this idea? Is it feasible
> at all?

If you are only interested in specific directories, you might want to
take a look at the kqueue interface (man 2 kqueue) in FreeBSD 4.1 and
later.  If you want something system-wide, then I believe that the ACL
work done in FreeBSD 5.x (available for preview in FreeBSD 5.0-RELEASE,
but still undergoing development and enhancements in -CURRENT, I think)
might be what you mean.

G'luck,
Peter

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