[Rpm-maint] [rpm-software-management/rpm] Support uncompressed/reconstructed payloads (#861)

Panu Matilainen notifications at github.com
Wed Sep 25 08:03:40 UTC 2019

Rpm supports uncompressed payload as it is (see commit 81acadbf1f55d128d733b5d9552276b4679ac682 and 9666e8c297515910674e7a4122016e038251664b), but that doesn't help the deltarpm case as this is a build-time thing.

I did consider adding a separate digest for the uncompressed data back when adding RPMTAG_PAYLOADDIGEST (there are various uses for the data), but to sanely do so would require teaching rpmio to calculate digests both pre- and/or post-(de)compression per request.

Somehow permitting the payload bits to differ from what was created at build-time would be a pretty significant change for rpm, but I agree there's a point in it: ultimately it's the authenticity of delivered bits that matter, not the delivery box (of compression). I'll need to think about this.

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