Messages in this thread | | | From | Nick Warne <> | Subject | Re: 'hello world' module | Date | Sat, 11 Jun 2005 16:53:34 +0100 |
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Hi Ilan,
I don't know about the Oh Really! version, but this one taken from 'Beginning Linux Programming' (forward by Alan Cox!) ISBN 1-861002-97-1 worked OK for me.
2.4.31, GCC 3.4.4
Build like:
gcc -D__KERNEL__ -I/usr/src/linux/include -DMODULE -Wall -O2 -c hello.c -o hello.o
Edit hello.c to suit:
#include <linux/module.h>
#if defined(CONFIG_SMP) #define __SMP__ #endif
#if defined(CONFIG_MODVERSIONS) #define MODVERSIONS #include <linux/modversions.h> #endif
#include <linux/kernel.h>
MODULE_AUTHOR ("Nick Warne <nick@linicks.net>"); MODULE_DESCRIPTION ("Hello Kernel! module"); MODULE_LICENSE("GPL");
int init_module(void) { printk(KERN_DEBUG "Hello, kernel!\n"); return 0; }
void cleanup_module(void) { printk(KERN_DEBUG "Good-bye, kernel!\n"); }
bash-2.05b# insmod hello.o bash-2.05b# dmesg | tail -n1 Hello, kernel!
bash-2.05b# lsmod Module Size Used by Tainted: P hello 320 0 (unused)
bash-2.05b# rmmod hello bash-2.05b# dmesg | tail -n1 Good-bye, kernel!
Hope that helps.
Nick -- "When you're chewing on life's gristle, Don't grumble, Give a whistle..." - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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