call open or write in kprobes: http://relayfs.sourceforge.net/examples.html
usage: sudo insmod cowfs_module.ko private_root="/home/cow_private/" install_root = "/home/zhoushengmeng/Code/"
call open or write in kprobes: http://relayfs.sourceforge.net/examples.html
usage: sudo insmod cowfs_module.ko private_root="/home/cow_private/" install_root = "/home/zhoushengmeng/Code/"