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Merge pull request #2678 from filecoin-project/asr/genesis-expected

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Check repo's genesis against baked-in genesis
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Whyrusleeping 2020-08-12 15:02:59 -07:00 committed by GitHub
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2 changed files with 20 additions and 1 deletions
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8
documentation/en/local-dev-net.md
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@ -6,6 +6,14 @@ Build the Lotus Binaries in debug mode, This enables the use of 2048 byte sector
make 2k
```
Set the `LOTUS_SKIP_GENESIS_CHECK` environment variable to `_yes_`. This tells your
Lotus node that it's okay if the genesis being used doesn't match any baked-in
genesis.
```sh
export LOTUS_SKIP_GENESIS_CHECK=_yes_
```
Download the 2048 byte parameters:
```sh
./lotus fetch-params 2048

13
node/modules/chain.go
View File

@ -3,6 +3,7 @@ package modules
import (
"bytes"
"context"
"os"
"github.com/ipfs/go-bitswap"
"github.com/ipfs/go-bitswap/network"
@ -127,8 +128,18 @@ func LoadGenesis(genBytes []byte) func(dtypes.ChainBlockstore) Genesis {
func DoSetGenesis(_ dtypes.AfterGenesisSet) {}
func SetGenesis(cs *store.ChainStore, g Genesis) (dtypes.AfterGenesisSet, error) {
_, err := cs.GetGenesis()
genFromRepo, err := cs.GetGenesis()
if err == nil {
if os.Getenv("LOTUS_SKIP_GENESIS_CHECK") != "_yes_" {
expectedGenesis, err := g()
if err != nil {
return dtypes.AfterGenesisSet{}, xerrors.Errorf("getting expected genesis failed: %w", err)
}
if genFromRepo.Cid() != expectedGenesis.Cid() {
return dtypes.AfterGenesisSet{}, xerrors.Errorf("genesis in the repo is not the one expected by this version of Lotus!")
}
}
return dtypes.AfterGenesisSet{}, nil // already set, noop
}
if err != datastore.ErrNotFound {