FUSE lets you develop a fully functional filesystem that has a simple API library, can be accessed by non-privileged users, and provides a secure implementation.
The first user to log in becomes the administrator automatically; all subsequent users that log in are non-privileged users.
登录的第一个用户将自动成为管理员;所有后续登录的用户都是无权限用户。
3
Recall that kernel mode represents the privileged mode for code execution, while user mode represents the non-privileged mode (for programs running outside the kernel).