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/*********************************************/
hello.c
#include
#include
MODULE_LICENSE("Dual BSD/GPL");
static int hello_init(void)
{
printk(KERN_ALERT "Hello, world\n");
return 0;
}
static void hello_exit(void)
{
printk(KERN_ALERT "Goodbye, cruel world\n");
}
module_init(hello_init);
module_exit(hello_exit);
#/*********************************************/
makefile:
obj-m := hello.o
KERNELDIR = /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
all:
$(MAKE) -C $(KERNELDIR) M=$(PWD)
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#make
#insmod hello.ko
#rmmod hello.ko
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Mar 27 17:01:30 localhost kernel: Hello,world
Mar 27 17:01:36 localhost kernel: Goodbye,cruel world