然后就可以使用这个返回的指针来配置这个虚拟文件的其他参数，例如在对该文件执行读操作时应该调用的函数。

You can then use the return pointer to configure other aspects of the virtual file, such as the function to call when a read is performed on the file.

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另外，永远不要忘记，虚拟继承的对象有指向基对象的基指针。

In addition, keep in mind that virtually inherited objects have base Pointers to address base objects.

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虚拟内存区域（VMA）指针要作为第一个参数，然后是四个常用的参数（start，end，size 和 protection 标记）。

The virtual memory area (VMA) pointer needs to be added in as the first parameter followed by the usual four parameters (start, end, size, and protection flags).

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