Re: /proc/ksyms and driver functions

["nitin kumbhar" <nkumbhar@rediffmail.com>]

On Wed, 29 Jan 2003 Seth Arnold wrote :
> On Tue, Jan 28, 2003 at 05:24:24PM -0500, John F Davis wrote:
> > I was under the impression that all routines (ie. functions) 
> were shown
in
> > /proc/ksyms.  However, I have a driver which is in the kernel 
> but
> > none of its routines show up in /proc/ksyms.  What is the 
> deal?
I think, the driver u r talking about is present in kernel image 
(ie it is not a
module). if this is the case /proc/ksyms or "ksyms" command won't 
show
the functions in driver.
if u want to list those functions then 1) u need to export
(EXPORT_SYMBOL) them. 2) make that driver as a module so that all 
the
symbols from the driver will be visible. Here u have to make sure 
that the
driver is not using the register_symtab() to register few or NO 
symbols.
this is so bcoz register_symtab() overwrites exporting of all 
symbols from
a module.

> This is the difference between exported and non-exported 
> symbols.
>
> EXPORT_SYMBOL() and EXPORT_SYMBOL_GPL() are the macros you
are looking
> for.
Is there any way to know non-exported symbols?

Regards,
Nitin





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