操作系统的安全与否直接决定着信息是否安全，因而系统在文件系统安全方面和在系统资源使用方面的控制就变得越来越重要。

Whether the security of operating system is determining directly safety of information, thus the control for in system resource use and file system safe become more and more important.

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为保护用户数据、系统资源不被非法访问和滥用，现代文件系统设立了文件访问控制、数据加密等各种安全机制。

To protect user data and system resources from unauthorized access, modern file systems often equip themselves with various security mechanisms such as access control and data encryption.

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