A file descriptor is an integer that refers to an open file or device, and it is used for reading and writing.

文件描述符是指向打开的文件或设备的整数，并用于执行读取和写入。

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The logical file system is also responsible for managing the kernel's open file table and the per process file descriptor information.

逻辑文件系统还负责管理内核的打开文件表和每个进程的文件描述符信息。

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This means that the process doesn't know the file has been deleted; it can still read and write to the file descriptor it was granted when the file was opened.

这意味着，进程并不知道文件已经被删除，它仍然可以向打开该文件时提供给它的文件描述符进行读取和写入。

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