Hi all,
I read thread on kernelnewbies that string can
be accessed in kernel from user space. So i try to do
it. I write simple user space program that receives
input string from user. I wan to know how then i can
write a kernel module that will receive that string
given by user.
My user program.
#include <stdio.h>
main()
{
char string_to_kernel[25];
printf("Enter string to be send to kernel= ");
scanf("%s",string_to_kernel);
printf("string sent to kenrel
is=%s\n",string_to_kernel);
}
My kernel module
#include <linux/init.h>
#include <linux/module.h>
#include <asm/uaccess.h>
static int hello_init(void)
{
char *str_from_user;
//What changes do i have to do here
copy_from_user(str_from_user, source,strlen(source) );
printk(KERN_INFO "String from
user=%s\n",str_from_user);
return 0;
}
static void hello_exit(void)
{
printk(KERN_INFO "Goodbye\n");
}
module_init(hello_init);
module_exit(hello_exit);
please correct me.
regards,
cranium.
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