CODEWITHSUNDEEP
filesystemsoperating-systemosdev
user173973
user173973

Reputation:

Simple in memory file system

Can anybody point me to a simple (can't stress this enough) implementation of an in memory file system? If I can create a file and do a simple cat file.txt it's more than enough.

I would like to use it as part of my toy OS.

Upvotes: 8

Views: 8344

Answers (3)

user689571
user689571

Reputation:

The OSDev wiki site might help you. You can also ask your questions there and if you look at wiki and their forum you will pretty likely get your answer.

Upvotes: 3

subwar
subwar

Reputation: 279

In my opinion, in-memory file systems should be as basic as possible. Here is a virtual file system implemented in user-mode from Windows, but its design principals can be used in your own OS. http://www.flipcode.com/archives/Programming_a_Virtual_File_System-Part_I.shtml . Even this might be too much for your basic OS. I say just wing it and create a linked list of file descriptors that include only file attributes, file name, and file path with each file.

Upvotes: 2

user541686
user541686

Reputation: 210455

This belongs on Super User IMHO, but anyway, you might want to look at ImDisk. It should be more than enough for just creating a RAM disk.

Wait, I misread... this is for your "toy OS"? Your toy OS supports file systems? You're going to have to implement it yourself, since there's no way something preexisting will work with your home-made OS.

Upvotes: 0

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