Re: [PATCH][RFC] Security mount data & sb_copy_data hook.

From: Chris Wright (chrisw@private)
Date: Fri Jan 30 2004 - 10:16:30 PST


* James Morris (jmorris@private) wrote:
> On Fri, 30 Jan 2004, Chris Wright wrote:
> 
> > > Any feedback on this will be most appreciated.
> > 
> > Hrm, I'm not really fond of the extra page, and extra hook.
> > Unfortunately, it doesn't seem like doing something generic in
> > lib/parser.c is feasible since not each fs uses it, and touching each
> > fs to find this is even uglier.
> 
> The extra page isn't really an issue as mounting a fileystem is not 
> performance critical.

Agreed.

> >  Would it be possible to handle it all
> > in the module with something like:
> > 
> > mount -tselinux -oreal_type=$fstype,context=foo,the_fs_opts dev mntpnt
> 
> I'm not sure how this could be done cleanly without further reaching into 
> the vfs (e.g. to hijack the real filesystem ops etc.).  Perhaps better 
> when we have a proper filesystem stacking mechanism available.

Ah yes, perennially on the todo list...

thanks,
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net



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