Add native RomFS file and directory handling #645
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Find RomFS mounts by name Find RomFS files by path or with a mount Iterate RomFS directory entries
To consolidate code paths to make maintenance slightly easier
Useful for turning romfs_direntry files into readable files
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This exposes some more of the RomFS API to the public facing side allowing file "opening" and directory listing natively without requiring stdio. The main reason for this is to allow reading RomFS files from an arbitary offset without first seeking the file position. As RomFS is read-only this is crucial for contentionless multi-threaded access, but is unfortunately missing from stdio. I kinda just did the directory iteration stuff to round out the API, they both have the added benefit of requiring zero allocation.
The stdio implementation has been updated to use the native APIs as well with a slight caveat when calling
romfs_open. It used to returnENOENTif the directory didn't exist butEROFSif the file didn't exist and theO_CREATflag was set. It now returnsEROFSin either case if theO_CREATflag is set.I'm happy to write up an example usage for the switchbrew/switch-examples repository.