How to compile <linnux/kernel.h> in Linux gcc compiler? - linux

Question

I have a simple question. I want to compile the following c file:
#include <linux/kernel.h>
#include <linux/module.h>
#include <sys/syscall.h>
extern void *sys_call_table[];
asmlinkage int (*original_sys_open)(int);
asmlinkage int our_fake_open_function(int error_code)
{
/*print message on console every time we
* *are called*/
printk("HEY! sys_open called with error_code=%d\n",error_code);
/*call the original sys_exit*/
return original_sys_open(error_code);
}
/*this function is called when the module is
* *loaded (initialization)*/
int init_module()
{
/*store reference to the original sys_exit*/
original_sys_open=sys_call_table[__NR_open];
/*manipulate sys_call_table to call our
* *fake exit function instead
* *of sys_exit*/
sys_call_table[__NR_open]=our_fake_open_function;
}
/*this function is called when the module is
* *unloaded*/
void cleanup_module()
{
/*make __NR_exit point to the original
* *sys_exit when our module
* *is unloaded*/
sys_call_table[__NR_open]=original_sys_open;
}
The problem is that gcc -I/usr/src/kernels/2.6.32-279.el6.x86_64/include myfile.c generates a unsolvabe include dependency which can be found in .
Please tell me how to fix this gcc compiler problem I am encountering today. Thank you very much for your insight.

Answer 1

How to build external modules is documented in the documentation:
$ make -C <path_to_kernel_src> M=$PWD