Kernel module_list

Kernel module_list

[Allison]

Hi,

I am trying to access the module list kernel data structure from a
kernel module. If I gather correctly, module_list is the symbol that
is the head pointer of this list.

This module compiles fine but when I try to insmod it, it say
module_list is unresolved symbol.

Does this symbol have to show up in the /proc/ksyms  ? 
It currently show up in the System.map file. 

What do I need to do to access this symbol.

Also, what do the three columns in the System.map file stand for ?
First col looks like the virtual address  and third looks like
function/symbol name. How do I read the second ?

thanks,
Allison

Re: Kernel module_list

[Arjan van de Ven]

On Thu, 2005-04-14 at 19:53 +0000, Allison wrote:
> 
> I am trying to access the module list kernel data structure from a
> kernel module. If I gather correctly, module_list is the symbol that
> is the head pointer of this list.

can you explain what you want to do with this symbol ?

(no subject)

[Allison]

I am trying to simply print out the module names and code sizes.
I am just learning how to rtraverse these data structures.

Also, on what basis is the decision made whether to export a symbol or not ?

thanks,
Allison

Arjan van de Ven wrote:
> On Thu, 2005-04-14 at 19:53 +0000, Allison wrote:
> > 
> > I am trying to access the module list kernel data structure from a
> > kernel module. If I gather correctly, module_list is the symbol that
> > is the head pointer of this list.
> 
> can you explain what you want to do with this symbol ?
> 
> 
> 
> -
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Re: Kernel module_list

[Coywolf Qi Hunt]

On Thu, Apr 14, 2005 at 08:48:42PM +0000, Allison wrote:
> I am trying to simply print out the module names and code sizes.
> I am just learning how to rtraverse these data structures.

Just read /proc/modules

	Coywolf

> 
> Also, on what basis is the decision made whether to export a symbol or not ?
> 
> thanks,
> Allison
> 
> Arjan van de Ven wrote:
> > On Thu, 2005-04-14 at 19:53 +0000, Allison wrote:
> > > 
> > > I am trying to access the module list kernel data structure from a
> > > kernel module. If I gather correctly, module_list is the symbol that
> > > is the head pointer of this list.
> > 
> > can you explain what you want to do with this symbol ?
> > 
> > 
> > 

Re: Kernel module_list

[Allison]

Right now , I am just learn. trying a test module that lists out all the modules

Allison

Arjan van de Ven wrote:
> On Thu, 2005-04-14 at 19:53 +0000, Allison wrote:
> > 
> > I am trying to access the module list kernel data structure from a
> > kernel module. If I gather correctly, module_list is the symbol that
> > is the head pointer of this list.
> 
> can you explain what you want to do with this symbol ?
> 
> 
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/