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linux内核中的get_user和put_user
在内核空间和用户空间交换数据时,和是两个两用的函数。相对于copy_to_user和copy_from_user(将在另一篇博客中分析),这两个函数主要用于完成一些简单类型变量(char、int、long等)的拷贝任务,对于一些复合类型的变量,比如数据结构或者数组类型,get_user和put_user ...
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