. selinux语法
Section 5.2. Types, Attributes, and Aliases
type type_name [ alias alias_set ] [, attribute_set] ;
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type_name |
An identifier for the type. The identifier can be any length and can contain ASCII characters, numbers, an underscore (_), or a period (.). |
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alias_set |
One or more alias identifiers. Alias identifiers have the same naming restrictions as type identifiers. If more than one alias identifier is specified, a space-separated list enclosed in braces ({ }) is used (for example, alias { aliasa_t aliasb_t }). |
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attribute_set |
One or more previously declared attribute identifiers. If more than one attribute is specified, a comma-separated list is used (for example, type bin_t, file_type, exec_type;).
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原文：https://www.cnblogs.com/aspirs/p/15128754.html