Extended Attributes

Extended Attribute allow arbitrary metadata, in the form of name-value pairs, to be associated with file i-nodes.

16.1 Overview

EAs are used to implement access control lists (Chapter 17) and file capabilities (Chapter 39).

文件 icon 的实现基础，awesome

An i-node may have multiple associated EAs, in the same namespace or in different namespaces. The EA names within each namespace are distinct sets. In the user and trusted namespaces, EA names can be arbitrary strings. In the system namespace, only names explicitly permitted by the kernel

演示了 setfattr 和 getfattr 的最基本的使用，但是 Ubuntu 上可以运行，但是 Manjaro 无法运行

16.2 Extended Attribute Implementation Details

介绍了 C 语言的调用的函数，最后还提供了一个编程例子

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