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Hello, World Module
=============== hello.c ================================
#include <linux/module.h>
int init_module(void)
{
printk("<1>Hello world \n");
return 0;
}
void cleanup_module(void)
{
printk("<1>Goodbye world \n");
}
====================================================
================= Makefile ========================
#DEBUG = y
INCLUDEDIR = /usr/src/linux/include
ifeq ($(DEBUG),y)
DEBFLAGS = -O -g -DJIT_DEBUG -DJIQ_DEBUG -DALL_DEBUG
else
DEBFLAGS = -O2
endif
CFLAGS = -D__KERNEL__ -DMODULE -Wall $(DEBFLAGS)
CFLAGS += -I$(INCLUDEDIR)
OBJS = hello.o
all: $(OBJS)
$(CC) $(CFLAGS) -c $^ -o $@
clean:
rm -f *.o
hello.o: hello.c
$(CC) $(CFLAGS) -c $^ -o $@
=======================================================
make
/sbin/insmod hello.o
lsmod
rmmod hello.o
/var/log/로 이동해서 "tail messages"
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