compiling kernel module question

[Amish Rughoonundon <axr0284@rit.edu>]

Hi,

I have been trying to compile and insert a simple kernel module but without luck. This is what I did.

Since the freshly installed debian sarge 3.1 distro did not have any source files under /usr/src, I di uname -a to make sure of the kernel version that is installed:

Linux test 2.4.27-2-386 #1 Mon May 16 16:47:51 JST 2005 i686 GNU/Linux

 

and then I downloaded the kernel-source-2.4.27.tar.bz2, unziped and untarred it. I then copied this program from  a book into example.c:

 

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
static char __initdata hellomessage[] = KERN_NOTICE "Hello, world!\n";
static char __exitdata byemessage[] = KERN_NOTICE "Goodbye, cruel world.\n";
static int __init start_hello_world(void)
{
   printk(hellomessage);
   return 0;
}
static void __exit go_away(void)
{
   printk(byemessage);
}
module_init(start_hello_world);
module_exit(go_away);

I then compiled it using

gcc -DMODULE -D__KERNEL__ -I/usr/src/kernel-source-2.4.27/include -c example.c

 

I tried inserting it into the kernel using

/sbin/insmod example.o

 

but this is the message I got back:

 

example.o: kernel-module version mismatch
        example.o was compiled for kernel version 2.6.0
        while this kernel is version 2.4.27-2-386.
example.o: cannot create /var/log/ksymoops/20051125172050.ksyms Permission denied

I don't understand how it could have been compiled for a version of the kernel that I did not use. Thanks in advance.

Amish