Creating Your Own File System in Linux: A Guide to Writing and Designing（linux编写文件系统）

Creating your own file system in Linux doesn’t have to be difficult. With the right approach and some basic coding knowledge, anyone can create their own file system. This guide will provide an overview of how to write and design a file system in Linux and some of the things to consider before you get started.

Before designing your file system, you need to know the basics of Linux file systems and the commands and options necessary to configure them. You should also familiarize yourself with various data structures and algorithms that will play a major role in your design. Writing a file system requires knowledge of C/C++ programming, so you may want to brush up on your coding skills.

Now that you have the basics down, it’s time to put your knowledge to the test. The primary design goal of your file system should be simplicity and readability; the better organized your files and directories, the easier it will be to later review or modify the code. Make sure you consider scalability and flexibility when writing your code.

Next, you should consider what type of data you will be storing and how you will arrange the files. If your file system will be used to store large files such as photos and videos, you should design it for efficient storage. For general data such as text documents and spreadsheets, you can design your file system for quick access.

Once you’ve designed the overall structure of your file system, you’re now ready to write the code. The file system should include a stack, a pointer, and a filesystem controller. The stack will hold the current file and directory names and the pointer will move through the stack elements. The filesystem controller will manage the commands for adding and removing files.

Your next step is to configure the access permissions for all resources of the file system. This includes setting read and write privileges for different user accounts. For security, you should also consider implementing encryption or adding other features such as checksums. Once all the permissions are set, your file system should be ready to test.

To test the functionality of your file system, use the Linux command-line interface (CLI) to navigate through your directory structure and ensure that desired commands such as delete, move, copy, and rename are working as expected. If errors occur during testing, you can use the CLI to diagnose the problem.

Creating your own file system in Linux can be an exciting endeavor. With the right approach, proper design, and thorough testing, you should have no problem crafting your own file system. Good luck!