[Rpm-maint] [rpm-software-management/rpm] API improvement to accommodate for RPM CoW (PR#1470) (Discussion #2057)

[David Disseldorp]

One other thing I noticed is that the rpm header carries the digest of the compressed payload in addition to the uncompressed payload digest. Verification of the compressed payload alongside `BTRFS_IOC_ENCODED_WRITE` is relatively straightforward, but verifying the uncompressed payload would require decompression, which we're obviously trying to avoid with this optimization.
I think it's safe to only perform compressed payload verification - zstd frames can carry an optional xxHash64 hash, which should be suitable for correctness checking if desired.

-- 
Reply to this email directly or view it on GitHub:
https://github.com/rpm-software-management/rpm/discussions/2057#discussioncomment-9270483
You are receiving this because you are subscribed to this thread.

Message ID: <rpm-software-management/rpm/repo-discussions/2057/comments/9270483 at github.com>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.rpm.org/pipermail/rpm-maint/attachments/20240429/f783a894/attachment.html>