LSM在Linux中的实现方式
LSM(Linux Secure Model)一种轻量级访问控制机制.其实现方式有如在系统调用中加入一个后门....方式如下:static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt, struct file *f, int (*open)(struct inode *, struct file *), const struct cred *cred){str...