EnsureTauxForType ensures that the t_aux file exists in the specified path for the specified seal proof type.

https://github.com/filecoin-project/rust-fil-proofs/blob/8f5bd86be36a55e33b9b293ba22ea13ca1f28163/storage-proofs-porep/src/stacked/vanilla/proof_scheme.rs#L60.

https://github.com/filecoin-project/rust-fil-proofs/blob/8f5bd86be36a55e33b9b293ba22ea13ca1f28163/storage-proofs-porep/src/stacked/vanilla/proof.rs#L96.

can't use .Unpadded() for const.

DataCidWriter is used as follows: cc := new(DataCidWriter) _, err = io.Copy(cc, f) dc, err := cc.Sum() This computes CommP / PieceCID from a stream, also returns piece and payload sizes.

SectorNodes is sector size as node count.