No It did not worked I tried what you said.
Here is the new program.
If possible just copy paste the program and try to run.
#include <linux/kernel.h>
#include <asm/syscalls.h>
#include <linux/module.h>
#include <linux/unistd.h>
extern void *sys_table[];
asmlinkage int(*main_sys_exit)(int);
asmlinkage int alt_exit_function(int err_code)
{
printk("Sys_exit called with err_code=%d\n",err_code);
return main_sys_exit(err_code);
}
int init_module()
{
main_sys_exit=sys_table[__NR_exit];
sys_table[__NR_exit]=alt_exit_function;
}
void cleanup_module()
{
sys_table[__NR_exit]=main_sys_exit;
}
Following way I tried to do it.
gcc -I /usr/src/linux-headers-`uname -r`/include -I
/usr/src/linux-headers-`uname -r`/linux -Wall -DMODULE -D__KERNEL__
-DLINUX -c sample2.c
and following errors I got
http://pastebin.com/ZGRD8cC3
any more guess?
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