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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 12:01:38 +01:00
committed by GitHub
co-authored by Felix Lange
parent d6cea4832a
commit 104dbf7821
4 changed files with 18 additions and 9 deletions
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cmd/utils/flags.go
+15
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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()
}