experiments for Course 'Advanced Operation System'.
In order to compile these modules, you should first get kernel code with version greater than 3.10:
wget http://mirrors.aliyun.com/linux-kernel/v4.x/linux-4.2.6.tar.xz
xz -d linux-4.2.6.tar.xz
tar -xvf linux-4.2.6.tar
Next, download the code of this proj to local machine. Here are the steps to compile proc_hello:
cp ~/proc_hello/proc_hello.c ~/linux-4.2.6/fs/proc # copy proc_hello.c to destination
mv Makefile Makefile.bak # since proc has its own Makefile, we need to backup it first
cp ~/proc_hello/Makefile ~/linux-4.2.6/fs/proc # copy Makefile to proc
make # compile
sudo insmod proc_hello.ko # install this module if you have compiled it successfully
Following these steps above, you shall see a "hello" directory in /proc, and a file called "world" under "hello". Cat world and you will print "hello world" if everything goes well.
