linux-kernel - Re: [patch, rfc] mm.h, security.h, key.h and preventing namespace poisoning

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Date:	Thu, 20 Dec 2007 15:11:40 +1100 (EST)
From:	James Morris <jmorris@...ei.org>
To:	David Chinner <dgc@....com>
cc:	lkml <linux-kernel@...r.kernel.org>,
	linux-security-module@...r.kernel.org,
	Eric Paris <eparis@...hat.com>, dhowells@...hat.com
Subject: Re: [patch, rfc] mm.h, security.h, key.h and preventing namespace
 poisoning

On Thu, 20 Dec 2007, David Chinner wrote:

> > I'm not sure I understand your namespace pollution issue, either.
> 
> doing this globally:
> 
> #ifdef CONFIG_SOMETHING
> extern int	some_common_name(int a, int b, int c);
> #else
> #define some_common_name(a,b,c)	0
> #endif

I suspect it may be useful ensure all global identifiers for the key 
subsystem are prefixed with key_, as 'copy_keys' does seem a little 
generic.

> > +#ifdef CONFIG_SECURITY
> > +extern unsigned long mmap_min_addr;
> > +#endif
> > +
> >  #include <asm/page.h>
> >  #include <asm/pgtable.h>
> >  #include <asm/processor.h>
> 
> Fine by me.

I'll queue it for -mm & 2.6.25.


- James
-- 
James Morris
<jmorris@...ei.org>
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