diff options
Diffstat (limited to 'src/validation.cpp')
-rw-r--r-- | src/validation.cpp | 238 |
1 files changed, 129 insertions, 109 deletions
diff --git a/src/validation.cpp b/src/validation.cpp index 8066e6c7a8..f22ae7f9be 100644 --- a/src/validation.cpp +++ b/src/validation.cpp @@ -16,6 +16,7 @@ #include <consensus/validation.h> #include <cuckoocache.h> #include <hash.h> +#include <index/txindex.h> #include <init.h> #include <policy/fees.h> #include <policy/policy.h> @@ -142,7 +143,7 @@ private: * ahead and mark descendants of invalid blocks as FAILED_CHILD at that time, * instead of putting things in this set. */ - std::set<CBlockIndex*> g_failed_blocks; + std::set<CBlockIndex*> m_failed_blocks; public: CChain chainActive; @@ -154,6 +155,10 @@ public: bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock); + /** + * If a block header hasn't already been seen, call CheckBlockHeader on it, ensure + * that it doesn't descend from an invalid block, and then add it to mapBlockIndex. + */ bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex); bool AcceptBlock(const std::shared_ptr<const CBlock>& pblock, CValidationState& state, const CChainParams& chainparams, CBlockIndex** ppindex, bool fRequested, const CDiskBlockPos* dbp, bool* fNewBlock); @@ -185,6 +190,11 @@ private: CBlockIndex* AddToBlockIndex(const CBlockHeader& block); /** Create a new block index entry for a given block hash */ CBlockIndex * InsertBlockIndex(const uint256& hash); + /** + * Make various assertions about the state of the block index. + * + * By default this only executes fully when using the Regtest chain; see: fCheckBlockIndex. + */ void CheckBlockIndex(const Consensus::Params& consensusParams); void InvalidBlockFound(CBlockIndex *pindex, const CValidationState &state); @@ -202,12 +212,12 @@ CCriticalSection cs_main; BlockMap& mapBlockIndex = g_chainstate.mapBlockIndex; CChain& chainActive = g_chainstate.chainActive; CBlockIndex *pindexBestHeader = nullptr; -CWaitableCriticalSection csBestBlock; -CConditionVariable cvBlockChange; +CWaitableCriticalSection g_best_block_mutex; +CConditionVariable g_best_block_cv; +uint256 g_best_block; int nScriptCheckThreads = 0; std::atomic_bool fImporting(false); std::atomic_bool fReindex(false); -bool fTxIndex = false; bool fHavePruned = false; bool fPruneMode = false; bool fIsBareMultisigStd = DEFAULT_PERMIT_BAREMULTISIG; @@ -263,7 +273,8 @@ CBlockIndex* FindForkInGlobalIndex(const CChain& chain, const CBlockLocator& loc { AssertLockHeld(cs_main); - // Find the first block the caller has in the main chain + // Find the latest block common to locator and chain - we expect that + // locator.vHave is sorted descending by height. for (const uint256& hash : locator.vHave) { CBlockIndex* pindex = LookupBlockIndex(hash); if (pindex) { @@ -352,7 +363,7 @@ bool CheckSequenceLocks(const CTransaction &tx, int flags, LockPoints* lp, bool CBlockIndex* tip = chainActive.Tip(); assert(tip != nullptr); - + CBlockIndex index; index.pprev = tip; // CheckSequenceLocks() uses chainActive.Height()+1 to evaluate @@ -466,7 +477,7 @@ static bool IsCurrentForFeeEstimation() * and instead just erase from the mempool as needed. */ -void UpdateMempoolForReorg(DisconnectedBlockTransactions &disconnectpool, bool fAddToMempool) +static void UpdateMempoolForReorg(DisconnectedBlockTransactions &disconnectpool, bool fAddToMempool) { AssertLockHeld(cs_main); std::vector<uint256> vHashUpdate; @@ -571,6 +582,12 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool if (fRequireStandard && !IsStandardTx(tx, reason, witnessEnabled)) return state.DoS(0, false, REJECT_NONSTANDARD, reason); + // Do not work on transactions that are too small. + // A transaction with 1 segwit input and 1 P2WPHK output has non-witness size of 82 bytes. + // Transactions smaller than this are not relayed to reduce unnecessary malloc overhead. + if (::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS) < MIN_STANDARD_TX_NONWITNESS_SIZE) + return state.DoS(0, false, REJECT_NONSTANDARD, "tx-size-small"); + // Only accept nLockTime-using transactions that can be mined in the next // block; we don't want our mempool filled up with transactions that can't // be mined yet. @@ -718,7 +735,7 @@ static bool AcceptToMemoryPoolWorker(const CChainParams& chainparams, CTxMemPool // No transactions are allowed below minRelayTxFee except from disconnected blocks if (!bypass_limits && nModifiedFees < ::minRelayTxFee.GetFee(nSize)) { - return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "min relay fee not met"); + return state.DoS(0, false, REJECT_INSUFFICIENTFEE, "min relay fee not met", false, strprintf("%d < %d", nModifiedFees, ::minRelayTxFee.GetFee(nSize))); } if (nAbsurdFee && nFees > nAbsurdFee) @@ -1017,28 +1034,8 @@ bool GetTransaction(const uint256& hash, CTransactionRef& txOut, const Consensus return true; } - if (fTxIndex) { - CDiskTxPos postx; - if (pblocktree->ReadTxIndex(hash, postx)) { - CAutoFile file(OpenBlockFile(postx, true), SER_DISK, CLIENT_VERSION); - if (file.IsNull()) - return error("%s: OpenBlockFile failed", __func__); - CBlockHeader header; - try { - file >> header; - fseek(file.Get(), postx.nTxOffset, SEEK_CUR); - file >> txOut; - } catch (const std::exception& e) { - return error("%s: Deserialize or I/O error - %s", __func__, e.what()); - } - hashBlock = header.GetHash(); - if (txOut->GetHash() != hash) - return error("%s: txid mismatch", __func__); - return true; - } - - // transaction not found in index, nothing more can be done - return false; + if (g_txindex) { + return g_txindex->FindTx(hash, hashBlock, txOut); } if (fAllowSlow) { // use coin database to locate block that contains transaction, and scan it @@ -1284,7 +1281,7 @@ void static InvalidChainFound(CBlockIndex* pindexNew) void CChainState::InvalidBlockFound(CBlockIndex *pindex, const CValidationState &state) { if (!state.CorruptionPossible()) { pindex->nStatus |= BLOCK_FAILED_VALID; - g_failed_blocks.insert(pindex); + m_failed_blocks.insert(pindex); setDirtyBlockIndex.insert(pindex); setBlockIndexCandidates.erase(pindex); InvalidChainFound(pindex); @@ -1496,7 +1493,7 @@ static bool UndoReadFromDisk(CBlockUndo& blockundo, const CBlockIndex *pindex) } /** Abort with a message */ -bool AbortNode(const std::string& strMessage, const std::string& userMessage="") +static bool AbortNode(const std::string& strMessage, const std::string& userMessage="") { SetMiscWarning(strMessage); LogPrintf("*** %s\n", strMessage); @@ -1507,7 +1504,7 @@ bool AbortNode(const std::string& strMessage, const std::string& userMessage="") return false; } -bool AbortNode(CValidationState& state, const std::string& strMessage, const std::string& userMessage="") +static bool AbortNode(CValidationState& state, const std::string& strMessage, const std::string& userMessage="") { AbortNode(strMessage, userMessage); return state.Error(strMessage); @@ -1613,22 +1610,27 @@ void static FlushBlockFile(bool fFinalize = false) LOCK(cs_LastBlockFile); CDiskBlockPos posOld(nLastBlockFile, 0); + bool status = true; FILE *fileOld = OpenBlockFile(posOld); if (fileOld) { if (fFinalize) - TruncateFile(fileOld, vinfoBlockFile[nLastBlockFile].nSize); - FileCommit(fileOld); + status &= TruncateFile(fileOld, vinfoBlockFile[nLastBlockFile].nSize); + status &= FileCommit(fileOld); fclose(fileOld); } fileOld = OpenUndoFile(posOld); if (fileOld) { if (fFinalize) - TruncateFile(fileOld, vinfoBlockFile[nLastBlockFile].nUndoSize); - FileCommit(fileOld); + status &= TruncateFile(fileOld, vinfoBlockFile[nLastBlockFile].nUndoSize); + status &= FileCommit(fileOld); fclose(fileOld); } + + if (!status) { + AbortNode("Flushing block file to disk failed. This is likely the result of an I/O error."); + } } static bool FindUndoPos(CValidationState &state, int nFile, CDiskBlockPos &pos, unsigned int nAddSize); @@ -1652,26 +1654,6 @@ static bool WriteUndoDataForBlock(const CBlockUndo& blockundo, CValidationState& return true; } -static bool WriteTxIndexDataForBlock(const CBlock& block, CValidationState& state, CBlockIndex* pindex) -{ - if (!fTxIndex) return true; - - CDiskTxPos pos(pindex->GetBlockPos(), GetSizeOfCompactSize(block.vtx.size())); - std::vector<std::pair<uint256, CDiskTxPos> > vPos; - vPos.reserve(block.vtx.size()); - for (const CTransactionRef& tx : block.vtx) - { - vPos.push_back(std::make_pair(tx->GetHash(), pos)); - pos.nTxOffset += ::GetSerializeSize(*tx, SER_DISK, CLIENT_VERSION); - } - - if (!pblocktree->WriteTxIndex(vPos)) { - return AbortNode(state, "Failed to write transaction index"); - } - - return true; -} - static CCheckQueue<CScriptCheck> scriptcheckqueue(128); void ThreadScriptCheck() { @@ -1724,16 +1706,38 @@ public: // Protected by cs_main static ThresholdConditionCache warningcache[VERSIONBITS_NUM_BITS]; +// 0.13.0 was shipped with a segwit deployment defined for testnet, but not for +// mainnet. We no longer need to support disabling the segwit deployment +// except for testing purposes, due to limitations of the functional test +// environment. See test/functional/p2p-segwit.py. +static bool IsScriptWitnessEnabled(const Consensus::Params& params) +{ + return params.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout != 0; +} + static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consensus::Params& consensusparams) { AssertLockHeld(cs_main); unsigned int flags = SCRIPT_VERIFY_NONE; - // Start enforcing P2SH (BIP16) - if (pindex->nHeight >= consensusparams.BIP16Height) { + // BIP16 didn't become active until Apr 1 2012 (on mainnet, and + // retroactively applied to testnet) + // However, only one historical block violated the P2SH rules (on both + // mainnet and testnet), so for simplicity, always leave P2SH + // on except for the one violating block. + if (consensusparams.BIP16Exception.IsNull() || // no bip16 exception on this chain + pindex->phashBlock == nullptr || // this is a new candidate block, eg from TestBlockValidity() + *pindex->phashBlock != consensusparams.BIP16Exception) // this block isn't the historical exception + { flags |= SCRIPT_VERIFY_P2SH; } + // Enforce WITNESS rules whenever P2SH is in effect (and the segwit + // deployment is defined). + if (flags & SCRIPT_VERIFY_P2SH && IsScriptWitnessEnabled(consensusparams)) { + flags |= SCRIPT_VERIFY_WITNESS; + } + // Start enforcing the DERSIG (BIP66) rule if (pindex->nHeight >= consensusparams.BIP66Height) { flags |= SCRIPT_VERIFY_DERSIG; @@ -1749,9 +1753,7 @@ static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consens flags |= SCRIPT_VERIFY_CHECKSEQUENCEVERIFY; } - // Start enforcing WITNESS rules using versionbits logic. - if (IsWitnessEnabled(pindex->pprev, consensusparams)) { - flags |= SCRIPT_VERIFY_WITNESS; + if (IsNullDummyEnabled(pindex->pprev, consensusparams)) { flags |= SCRIPT_VERIFY_NULLDUMMY; } @@ -2043,9 +2045,6 @@ bool CChainState::ConnectBlock(const CBlock& block, CValidationState& state, CBl setDirtyBlockIndex.insert(pindex); } - if (!WriteTxIndexDataForBlock(block, state, pindex)) - return false; - assert(pindex->phashBlock); // add this block to the view's block chain view.SetBestBlock(pindex->GetBlockHash()); @@ -2073,13 +2072,12 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState & LOCK(cs_main); static int64_t nLastWrite = 0; static int64_t nLastFlush = 0; - static int64_t nLastSetChain = 0; std::set<int> setFilesToPrune; - bool fFlushForPrune = false; - bool fDoFullFlush = false; - int64_t nNow = 0; + bool full_flush_completed = false; try { { + bool fFlushForPrune = false; + bool fDoFullFlush = false; LOCK(cs_LastBlockFile); if (fPruneMode && (fCheckForPruning || nManualPruneHeight > 0) && !fReindex) { if (nManualPruneHeight > 0) { @@ -2096,7 +2094,7 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState & } } } - nNow = GetTimeMicros(); + int64_t nNow = GetTimeMicros(); // Avoid writing/flushing immediately after startup. if (nLastWrite == 0) { nLastWrite = nNow; @@ -2104,9 +2102,6 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState & if (nLastFlush == 0) { nLastFlush = nNow; } - if (nLastSetChain == 0) { - nLastSetChain = nNow; - } int64_t nMempoolSizeMax = gArgs.GetArg("-maxmempool", DEFAULT_MAX_MEMPOOL_SIZE) * 1000000; int64_t cacheSize = pcoinsTip->DynamicMemoryUsage(); int64_t nTotalSpace = nCoinCacheUsage + std::max<int64_t>(nMempoolSizeMax - nMempoolUsage, 0); @@ -2163,12 +2158,12 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState & if (!pcoinsTip->Flush()) return AbortNode(state, "Failed to write to coin database"); nLastFlush = nNow; + full_flush_completed = true; } } - if (fDoFullFlush || ((mode == FlushStateMode::ALWAYS || mode == FlushStateMode::PERIODIC) && nNow > nLastSetChain + (int64_t)DATABASE_WRITE_INTERVAL * 1000000)) { + if (full_flush_completed) { // Update best block in wallet (so we can detect restored wallets). - GetMainSignals().SetBestChain(chainActive.GetLocator()); - nLastSetChain = nNow; + GetMainSignals().ChainStateFlushed(chainActive.GetLocator()); } } catch (const std::runtime_error& e) { return AbortNode(state, std::string("System error while flushing: ") + e.what()); @@ -2179,14 +2174,18 @@ bool static FlushStateToDisk(const CChainParams& chainparams, CValidationState & void FlushStateToDisk() { CValidationState state; const CChainParams& chainparams = Params(); - FlushStateToDisk(chainparams, state, FlushStateMode::ALWAYS); + if (!FlushStateToDisk(chainparams, state, FlushStateMode::ALWAYS)) { + LogPrintf("%s: failed to flush state (%s)\n", __func__, FormatStateMessage(state)); + } } void PruneAndFlush() { CValidationState state; fCheckForPruning = true; const CChainParams& chainparams = Params(); - FlushStateToDisk(chainparams, state, FlushStateMode::NONE); + if (!FlushStateToDisk(chainparams, state, FlushStateMode::NONE)) { + LogPrintf("%s: failed to flush state (%s)\n", __func__, FormatStateMessage(state)); + } } static void DoWarning(const std::string& strWarning) @@ -2204,7 +2203,11 @@ void static UpdateTip(const CBlockIndex *pindexNew, const CChainParams& chainPar // New best block mempool.AddTransactionsUpdated(1); - cvBlockChange.notify_all(); + { + WaitableLock lock(g_best_block_mutex); + g_best_block = pindexNew->GetBlockHash(); + g_best_block_cv.notify_all(); + } std::vector<std::string> warningMessages; if (!IsInitialBlockDownload()) @@ -2554,8 +2557,9 @@ bool CChainState::ActivateBestChainStep(CValidationState& state, const CChainPar if (!ConnectTip(state, chainparams, pindexConnect, pindexConnect == pindexMostWork ? pblock : std::shared_ptr<const CBlock>(), connectTrace, disconnectpool)) { if (state.IsInvalid()) { // The block violates a consensus rule. - if (!state.CorruptionPossible()) - InvalidChainFound(vpindexToConnect.back()); + if (!state.CorruptionPossible()) { + InvalidChainFound(vpindexToConnect.front()); + } state = CValidationState(); fInvalidFound = true; fContinue = false; @@ -2619,6 +2623,10 @@ static void NotifyHeaderTip() { * Make the best chain active, in multiple steps. The result is either failure * or an activated best chain. pblock is either nullptr or a pointer to a block * that is already loaded (to avoid loading it again from disk). + * + * ActivateBestChain is split into steps (see ActivateBestChainStep) so that + * we avoid holding cs_main for an extended period of time; the length of this + * call may be quite long during reindexing or a substantial reorg. */ bool CChainState::ActivateBestChain(CValidationState &state, const CChainParams& chainparams, std::shared_ptr<const CBlock> pblock) { // Note that while we're often called here from ProcessNewBlock, this is @@ -2672,18 +2680,17 @@ bool CChainState::ActivateBestChain(CValidationState &state, const CChainParams& assert(trace.pblock && trace.pindex); GetMainSignals().BlockConnected(trace.pblock, trace.pindex, trace.conflictedTxs); } - } - // When we reach this point, we switched to a new tip (stored in pindexNewTip). - // Notifications/callbacks that can run without cs_main + // Notify external listeners about the new tip. + // Enqueue while holding cs_main to ensure that UpdatedBlockTip is called in the order in which blocks are connected + GetMainSignals().UpdatedBlockTip(pindexNewTip, pindexFork, fInitialDownload); - // Notify external listeners about the new tip. - GetMainSignals().UpdatedBlockTip(pindexNewTip, pindexFork, fInitialDownload); - - // Always notify the UI if a new block tip was connected - if (pindexFork != pindexNewTip) { - uiInterface.NotifyBlockTip(fInitialDownload, pindexNewTip); + // Always notify the UI if a new block tip was connected + if (pindexFork != pindexNewTip) { + uiInterface.NotifyBlockTip(fInitialDownload, pindexNewTip); + } } + // When we reach this point, we switched to a new tip (stored in pindexNewTip). if (nStopAtHeight && pindexNewTip && pindexNewTip->nHeight >= nStopAtHeight) StartShutdown(); @@ -2778,7 +2785,7 @@ bool CChainState::InvalidateBlock(CValidationState& state, const CChainParams& c pindex->nStatus |= BLOCK_FAILED_VALID; setDirtyBlockIndex.insert(pindex); setBlockIndexCandidates.erase(pindex); - g_failed_blocks.insert(pindex); + m_failed_blocks.insert(pindex); // DisconnectTip will add transactions to disconnectpool; try to add these // back to the mempool. @@ -2824,7 +2831,7 @@ bool CChainState::ResetBlockFailureFlags(CBlockIndex *pindex) { // Reset invalid block marker if it was pointing to one of those. pindexBestInvalid = nullptr; } - g_failed_blocks.erase(it->second); + m_failed_blocks.erase(it->second); } it++; } @@ -2834,6 +2841,7 @@ bool CChainState::ResetBlockFailureFlags(CBlockIndex *pindex) { if (pindex->nStatus & BLOCK_FAILED_MASK) { pindex->nStatus &= ~BLOCK_FAILED_MASK; setDirtyBlockIndex.insert(pindex); + m_failed_blocks.erase(pindex); } pindex = pindex->pprev; } @@ -3094,6 +3102,12 @@ bool IsWitnessEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& pa return (VersionBitsState(pindexPrev, params, Consensus::DEPLOYMENT_SEGWIT, versionbitscache) == ThresholdState::ACTIVE); } +bool IsNullDummyEnabled(const CBlockIndex* pindexPrev, const Consensus::Params& params) +{ + LOCK(cs_main); + return (VersionBitsState(pindexPrev, params, Consensus::DEPLOYMENT_SEGWIT, versionbitscache) == ThresholdState::ACTIVE); +} + // Compute at which vout of the block's coinbase transaction the witness // commitment occurs, or -1 if not found. static int GetWitnessCommitmentIndex(const CBlock& block) @@ -3317,8 +3331,11 @@ bool CChainState::AcceptBlockHeader(const CBlockHeader& block, CValidationState& if (!ContextualCheckBlockHeader(block, state, chainparams, pindexPrev, GetAdjustedTime())) return error("%s: Consensus::ContextualCheckBlockHeader: %s, %s", __func__, hash.ToString(), FormatStateMessage(state)); + // If the previous block index isn't valid, determine if it descends from any block which + // has been found invalid (g_failed_blocks), then mark pindexPrev and any blocks + // between them as failed. if (!pindexPrev->IsValid(BLOCK_VALID_SCRIPTS)) { - for (const CBlockIndex* failedit : g_failed_blocks) { + for (const CBlockIndex* failedit : m_failed_blocks) { if (pindexPrev->GetAncestor(failedit->nHeight) == failedit) { assert(failedit->nStatus & BLOCK_FAILED_VALID); CBlockIndex* invalid_walk = pindexPrev; @@ -3484,7 +3501,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons } if (!ret) { GetMainSignals().BlockChecked(*pblock, state); - return error("%s: AcceptBlock FAILED (%s)", __func__, state.GetDebugMessage()); + return error("%s: AcceptBlock FAILED (%s)", __func__, FormatStateMessage(state)); } } @@ -3492,7 +3509,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons CValidationState state; // Only used to report errors, not invalidity - ignore it if (!g_chainstate.ActivateBestChain(state, chainparams, pblock)) - return error("%s: ActivateBestChain failed", __func__); + return error("%s: ActivateBestChain failed (%s)", __func__, FormatStateMessage(state)); return true; } @@ -3610,7 +3627,9 @@ void PruneBlockFilesManual(int nManualPruneHeight) { CValidationState state; const CChainParams& chainparams = Params(); - FlushStateToDisk(chainparams, state, FlushStateMode::NONE, nManualPruneHeight); + if (!FlushStateToDisk(chainparams, state, FlushStateMode::NONE, nManualPruneHeight)) { + LogPrintf("%s: failed to flush state (%s)\n", __func__, FormatStateMessage(state)); + } } /** @@ -3845,10 +3864,6 @@ bool static LoadBlockIndexDB(const CChainParams& chainparams) pblocktree->ReadReindexing(fReindexing); if(fReindexing) fReindex = true; - // Check whether we have a transaction index - pblocktree->ReadFlag("txindex", fTxIndex); - LogPrintf("%s: transaction index %s\n", __func__, fTxIndex ? "enabled" : "disabled"); - return true; } @@ -3864,6 +3879,7 @@ bool LoadChainTip(const CChainParams& chainparams) LogPrintf("%s: Connecting genesis block...\n", __func__); CValidationState state; if (!ActivateBestChain(state, chainparams)) { + LogPrintf("%s: failed to activate chain (%s)\n", __func__, FormatStateMessage(state)); return false; } } @@ -3978,7 +3994,7 @@ bool CVerifyDB::VerifyDB(const CChainParams& chainparams, CCoinsView *coinsview, if (!ReadBlockFromDisk(block, pindex, chainparams.GetConsensus())) return error("VerifyDB(): *** ReadBlockFromDisk failed at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString()); if (!g_chainstate.ConnectBlock(block, state, pindex, coins, chainparams)) - return error("VerifyDB(): *** found unconnectable block at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString()); + return error("VerifyDB(): *** found unconnectable block at %d, hash=%s (%s)", pindex->nHeight, pindex->GetBlockHash().ToString(), FormatStateMessage(state)); } } @@ -4086,6 +4102,9 @@ bool CChainState::RewindBlockIndex(const CChainParams& params) int nHeight = 1; while (nHeight <= chainActive.Height()) { + // Although SCRIPT_VERIFY_WITNESS is now generally enforced on all + // blocks in ConnectBlock, we don't need to go back and + // re-download/re-verify blocks from before segwit actually activated. if (IsWitnessEnabled(chainActive[nHeight - 1], params.GetConsensus()) && !(chainActive[nHeight]->nStatus & BLOCK_OPT_WITNESS)) { break; } @@ -4105,11 +4124,13 @@ bool CChainState::RewindBlockIndex(const CChainParams& params) break; } if (!DisconnectTip(state, params, nullptr)) { - return error("RewindBlockIndex: unable to disconnect block at height %i", pindex->nHeight); + return error("RewindBlockIndex: unable to disconnect block at height %i (%s)", pindex->nHeight, FormatStateMessage(state)); } // Occasionally flush state to disk. - if (!FlushStateToDisk(params, state, FlushStateMode::PERIODIC)) + if (!FlushStateToDisk(params, state, FlushStateMode::PERIODIC)) { + LogPrintf("RewindBlockIndex: unable to flush state to disk (%s)\n", FormatStateMessage(state)); return false; + } } // Reduce validity flag and have-data flags. @@ -4175,6 +4196,7 @@ bool RewindBlockIndex(const CChainParams& params) { // it'll get called a bunch real soon. CValidationState state; if (!FlushStateToDisk(params, state, FlushStateMode::ALWAYS)) { + LogPrintf("RewindBlockIndex: unable to flush state to disk (%s)\n", FormatStateMessage(state)); return false; } } @@ -4184,7 +4206,7 @@ bool RewindBlockIndex(const CChainParams& params) { void CChainState::UnloadBlockIndex() { nBlockSequenceId = 1; - g_failed_blocks.clear(); + m_failed_blocks.clear(); setBlockIndexCandidates.clear(); } @@ -4235,9 +4257,6 @@ bool LoadBlockIndex(const CChainParams& chainparams) // needs_init. LogPrintf("Initializing databases...\n"); - // Use the provided setting for -txindex in the new database - fTxIndex = gArgs.GetBoolArg("-txindex", DEFAULT_TXINDEX); - pblocktree->WriteFlag("txindex", fTxIndex); } return true; } @@ -4261,7 +4280,7 @@ bool CChainState::LoadGenesisBlock(const CChainParams& chainparams) CBlockIndex *pindex = AddToBlockIndex(block); CValidationState state; if (!ReceivedBlockTransactions(block, state, pindex, blockPos, chainparams.GetConsensus())) - return error("%s: genesis block not accepted", __func__); + return error("%s: genesis block not accepted (%s)", __func__, FormatStateMessage(state)); } catch (const std::runtime_error& e) { return error("%s: failed to write genesis block: %s", __func__, e.what()); } @@ -4726,7 +4745,8 @@ bool DumpMempool(void) } file << mapDeltas; - FileCommit(file.Get()); + if (!FileCommit(file.Get())) + throw std::runtime_error("FileCommit failed"); file.fclose(); RenameOver(GetDataDir() / "mempool.dat.new", GetDataDir() / "mempool.dat"); int64_t last = GetTimeMicros(); |