feat: add support for zstd compressed inodes#131
Merged
Conversation
Upstream Linux defines UBIFS_COMPR_ZSTD in the UBIFS media format and has a zstd compressor/decompressor path in fs/ubifs/compress.c It fell through to return data, so raw zstd frames were written into extracted files. Now it's being extracted with zstandard library. Tested on samples observed in the wild, will be tested through synthetic integration tests in unblob.
e3krisztian
approved these changes
Jun 16, 2026
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
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Upstream Linux defines
UBIFS_COMPR_ZSTDin the UBIFS media format and has a zstd compressor/decompressor path in fs/ubifs/compress.cIt fell through to return data, so raw zstd frames were written into extracted files.
Now it's being extracted with zstandard library.
Tested on samples observed in the wild, will be tested through synthetic integration tests in unblob.