The idea is to be able to manage files and their memory manually. I have written my own resource buffer and these are the only two functions stopping me from implementing it properly.

My resource buffer is like a tree. It may have two files with the same name, but under different parents. If I use add_buffer, I can only have one file with that name.

Another possibility of these functions is to store bitmap or entity data internally (inside an array), so its data cannot be accessed.

... You don’t seem convinced...?