Иногда имеет смысл разделить модуль на несколько файлов. В этом случае Вы должны делать следующее:
Пример такого модуля:
/* start.c
* Copyright (C) 1999 by Ori Pomerantz
*
* "Hello, world" - the kernel module version.
* This file includes just the start routine
*/
/* The necessary header files */
/* Standard in kernel modules */
#include <linux/kernel.h> /* We're doing kernel work */
#include <linux/module.h> /* Specifically, a module */
/* Deal with CONFIG_MODVERSIONS */
#if CONFIG_MODVERSIONS==1
#define MODVERSIONS
#include <linux/modversions.h>
#endif
/* Initialize the module */
int init_module()
{
printk("Hello, world - this is the kernel speaking\n");
/* If we return a non zero value, it means that
* init_module failed and the kernel module
* can't be loaded */
return 0;
}
/* stop.c
* Copyright (C) 1999 by Ori Pomerantz
*
* "Hello, world" - the kernel module version. This
* file includes just the stop routine.
*/
/* The necessary header files */
/* Standard in kernel modules */
#include <linux/kernel.h> /* We're doing kernel work */
#define __NO_VERSION__ /* This isn't "the" file
* of the kernel module */
#include <linux/module.h> /* Specifically, a module */
#include <linux/version.h> /* Not included by
* module.h because
* of the __NO_VERSION__ */
/* Deal with CONFIG_MODVERSIONS */
#if CONFIG_MODVERSIONS==1
#define MODVERSIONS
#include <linux/modversions.h>
#endif
/* Cleanup - undid whatever init_module did */
void cleanup_module()
{
printk("Short is the life of a kernel module\n");
}
# Makefile for a multifile kernel module
CC=gcc
MODCFLAGS := -Wall -DMODULE -D__KERNEL__ -DLINUX
hello.o: start.o stop.o
ld -m elf_i386 -r -o hello.o start.o stop.o
start.o: start.c /usr/include/linux/version.h
$(CC) $(MODCFLAGS) -c start.c
stop.o: stop.c /usr/include/linux/version.h
$(CC) $(MODCFLAGS) -c stop.c