Compiling Kernel Module in Ubuntu 9.04

scenario: compiling module

1. ubuntu 9.04
2. kernel 2.6.28-15-generic

sample code:

#include

#include /* Needed by all modules */

#include /* Needed for KERN_INFO */

#include /* Needed for the macros */

static int __init hello_start(void)

{

printk(KERN_INFO "Loading hello module...\n");

printk(KERN_INFO "Hello world\n");

return 0;

}

static void __exit hello_end(void)

{

printk(KERN_INFO "Goodbye Mr.\n");

}

module_init(hello_start);

module_exit(hello_end);

instruction guide:

sudo apt-get install linux-headers-`uname -r`

vi hello.c

copy the code into it

vi Makefile

insert

obj-m := nothing.o

in the command line type

make -C /lib/modules/`uname -r`/build M=`pwd` modules