Gets the current file row pointer, stored as an object but used as an integer, from the global variable in the data area for the test engine (this will be set up later).
从测试引擎(稍后就会安装它)数据区域中的全局变量获取当前最为结果储存但是当作整数使用的文件行指针。
After the fork, the parent and child have copies of all open file descriptors and data values, so the pointer works for both.
执行fork之后，父进程和子进程获得打开的所有文件描述符和数据值的拷贝，所以指针对于它们都是有效的。
Why did Windows use the FAT structure instead of a conventional linked list with a next pointer for each data block of a file?
为什么窗户使用脂肪结构代替传统的与下一个指针链表的每个数据块文件?。
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