Re: [LIP] Kernel symbols

Hi :-)

I've got a good new
You don't have to kompile new kernel :-)

You can write a module, compile it like a program and simply upload
it to the kernel /on disload whenether you like/
- and there's a special procedure to do that.

First - the code:
There're 2 obligatory headers, which you have to include:
<linux/modules.h>
<linux/kernel.h>

And your main should be not main() but init_module() {};

And of course there're special equalities of functions using with
normal C programming
for example: printf() is printk()

You compile the kernel module with gcc but using some obligatory flags.

follow this link
http://www.tldp.org/LDP/lkmpg/lkmpg.pdf - it's a good guide where
you will easily the details

HopeToHelp
Asia Sledzik


------ Wiadomość oryginalna ------
Od:    suresh kumar <suresh_vin-/iAzse42w/[email protected]>
Data:  2004-01-23 05:47
Temat: [LIP] Kernel symbols

:-> Hi,
:-> While creating a module, what kernel functions can be used. If I
use some
kernel functions directly, I am getting unresolved symbols. One
thing which I
refer is ksyms, but a kernel function which is used need not be
xported in
ksyms, as "ip_route_input" which is not present in ksyms but I still
didn't
get unresolved symbole linking error. So is there any way, I can
know which
functions I can use directly in the module code. Or in my case
should I only
go with compiling my module along with the kernel code and build a new
kernel. Kindly help me ASAP, I am stuck here.
:-> Suresh
:-> V.V Suresh Kumar
:-> 
:-> 
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