V2EX vfs

VFS

定义 Definition

VFS 常指 Virtual File System(虚拟文件系统):一种操作系统内核中的抽象层,用统一接口把不同类型的文件系统(如 ext4、NTFS、NFS 等)连接起来,使应用程序能用同一套系统调用访问不同文件系统。
(在某些语境中也可能指其他缩写,但计算机领域最常见的是“虚拟文件系统”。)

发音 Pronunciation

/vi f s/

例句 Examples

The kernel uses VFS to provide a common way to access files.
内核使用 VFS 来提供一种访问文件的通用方式。

Because VFS abstracts the underlying file system, the same program can read local disks and network shares with minimal changes.
由于 VFS 抽象了底层文件系统,同一个程序几乎不需修改就能读取本地磁盘和网络共享。

词源 Etymology

VFS 是首字母缩写,来自 Virtual File System

  • virtual(虚拟的)强调“抽象层/不直接等同某个具体文件系统”;
  • file system(文件系统)指组织与管理文件、目录、权限等的机制。
    该术语在类 Unix 系统的发展中广泛使用,用来描述内核为多种文件系统提供统一接口的设计。

相关词 Related Words

文学与作品 Literary Works

  • Linux Kernel Development(Robert Love)
  • Understanding the Linux Kernel(Daniel P. Bovet, Marco Cesati)
  • Linux Device Drivers(Jonathan Corbet, Alessandro Rubini, Greg Kroah-Hartman)
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