initial hello
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commit
3e443344fa
15
hello/Makefile
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15
hello/Makefile
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ifneq ($(KERNELRELEASE),)
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obj-m := hello.o
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else
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KERNELDIR ?= /usr/src/linux-headers-4.19.66-v7+
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PWD := $(shell pwd)
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default:
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$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
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.PHONY: clean
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clean:
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rm -rf *.o *~ core .depend .*.cmd *.ko *.mod.c .tmp_versions modules.order Module.symvers
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endif
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20
hello/hello.c
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20
hello/hello.c
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/*
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* $Id: hello.c,v 1.5 2004/10/26 03:32:21 corbet Exp $
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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MODULE_LICENSE("GPL");
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static int hello_init(void)
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{
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printk(KERN_ALERT "Hello, world\n");
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return 0;
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}
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static void hello_exit(void)
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{
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printk(KERN_ALERT "Goodbye, cruel world\n");
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}
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module_init(hello_init);
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module_exit(hello_exit);
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