How to implement filesystem related functions in my custom OS?

[Wattana 0]

I am making a custom Linux-like kernel named "OCLinux" many functionalities are still missing, such as loading file, etc.
How do I do this?

Here is the kernel: https://github.com/WattanaGaming/OCLinux/blob/master/boot/kernel/OCLinux.lua

[Molinko 43]

This is actually requires a really complex answer I'm not qualified to give.. I would recommend staring and tearing at the OpenOS filesystem API until you have some ideas. Be warned that it gets pretty difficult to grep at some points especially concerning virtual files and directories.

lib filesystem

also see

core full_filesystem