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cmd/utils: validate pre-existing genesis in --dev mode (#28468)

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geth --dev can be used with an existing data directory and genesis block. Since
dev mode only works with PoS, we need to verify that the merge has happened.

Co-authored-by: Felix Lange <fjl@twurst.com>
This commit is contained in:
jwasinger 2023-11-22 19:01:38 +08:00 committed by GitHub
parent d6cea4832a
commit 104dbf7821
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 18 additions and 9 deletions
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15
cmd/utils/flags.go
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@ -1870,6 +1870,21 @@ func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
chaindb := tryMakeReadOnlyDatabase(ctx, stack)
if rawdb.ReadCanonicalHash(chaindb, 0) != (common.Hash{}) {
cfg.Genesis = nil // fallback to db content
//validate genesis has PoS enabled in block 0
genesis, err := core.ReadGenesis(chaindb)
if err != nil {
Fatalf("Could not read genesis from database: %v", err)
}
if !genesis.Config.TerminalTotalDifficultyPassed {
Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficultyPassed must be true in developer mode")
}
if genesis.Config.TerminalTotalDifficulty == nil {
Fatalf("Bad developer-mode genesis configuration: terminalTotalDifficulty must be specified.")
}
if genesis.Difficulty.Cmp(genesis.Config.TerminalTotalDifficulty) != 1 {
Fatalf("Bad developer-mode genesis configuration: genesis block difficulty must be > terminalTotalDifficulty")
}
}
chaindb.Close()
}

2
core/genesis.go
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@ -589,7 +589,7 @@ func DeveloperGenesisBlock(gasLimit uint64, faucet common.Address) *Genesis {
Config: &config,
GasLimit: gasLimit,
BaseFee: big.NewInt(params.InitialBaseFee),
Difficulty: big.NewInt(0),
Difficulty: big.NewInt(1),
Alloc: map[common.Address]GenesisAccount{
common.BytesToAddress([]byte{1}): {Balance: big.NewInt(1)}, // ECRecover
common.BytesToAddress([]byte{2}): {Balance: big.NewInt(1)}, // SHA256

4
eth/catalyst/simulated_beacon.go
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@ -82,10 +82,6 @@ type SimulatedBeacon struct {
}
func NewSimulatedBeacon(period uint64, eth *eth.Ethereum) (*SimulatedBeacon, error) {
chainConfig := eth.APIBackend.ChainConfig()
if !chainConfig.IsDevMode {
return nil, errors.New("incompatible pre-existing chain configuration")
}
block := eth.BlockChain().CurrentBlock()
current := engine.ForkchoiceStateV1{
HeadBlockHash: block.Hash(),

6
params/config.go
View File

@ -180,7 +180,6 @@ var (
ShanghaiTime: newUint64(0),
TerminalTotalDifficulty: big.NewInt(0),
TerminalTotalDifficultyPassed: true,
IsDevMode: true,
}
// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
@ -329,9 +328,8 @@ type ChainConfig struct {
TerminalTotalDifficultyPassed bool `json:"terminalTotalDifficultyPassed,omitempty"`
// Various consensus engines
Ethash *EthashConfig `json:"ethash,omitempty"`
Clique *CliqueConfig `json:"clique,omitempty"`
IsDevMode bool `json:"isDev,omitempty"`
Ethash *EthashConfig `json:"ethash,omitempty"`
Clique *CliqueConfig `json:"clique,omitempty"`
}
// EthashConfig is the consensus engine configs for proof-of-work based sealing.