Inserting a module (2.6 kernel)

[Steve Hemond]

Hi people,

I am new to kernel module writing and I base myself on the Linux Device Drivers book from O'reilly. I have written this simple module :

#include <linux/module.h>

int init_module(void)
{
  printk("<1>Module inserted\n");
  return 0;
}

void cleanup_module(void)
{
  printk("<1>Module removed\n");
}

--------------------------------------------
And this is the Makefile :

KERNELDIR = /usr/src/linux

include $(KERNELDIR)/.config

CFLAGS = -D__KERNEL__ -DMODULE -I$(KERNELDIR)/include \
        -O -Wall

ifdef CONFIG_SMP
        CFLAGS += -D__SMP__ -DSMP
endif

all : moduletest.o

clean :
        rm -f *.o *~ core

---------------------------------------------

And look at this :

bash-2.05b# make
gcc -D__KERNEL__ -DMODULE -I/usr/src/linux/include -O -Wall   -c -o moduletest.o moduletest.c
bash-2.05b# insmod ./moduletest.o
insmod: error inserting './moduletest.o': -1 Invalid module format

Anyone know what needs to be added or changed for kernel 2.6, or maybe its simply my own mistake?

(By the way, if you know of a kernel-beginner mailing list that would be better suited about this, tell me)

Thanks a lot in advance,

Best regards,

Steve
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