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.
一群领导0意味着你想读一个偏移量从一个空指针。
A bunch of leading 0s means that you're trying to read at an offset from a null pointer.
一群领导0意味着你想读一个偏移量从一个空指针。
A bunch of leading 0s means that you're trying to read at an offset from a null pointer.
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