1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
// Copyright (c) 2011-2021 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <node/blockstorage.h>
#include <chain.h>
#include <chainparams.h>
#include <flatfile.h>
#include <fs.h>
#include <pow.h>
#include <shutdown.h>
#include <signet.h>
#include <streams.h>
#include <util/system.h>
#include <validation.h>
// From validation. TODO move here
bool FindBlockPos(FlatFilePos& pos, unsigned int nAddSize, unsigned int nHeight, CChain& active_chain, uint64_t nTime, bool fKnown = false);
static bool WriteBlockToDisk(const CBlock& block, FlatFilePos& pos, const CMessageHeader::MessageStartChars& messageStart)
{
// Open history file to append
CAutoFile fileout(OpenBlockFile(pos), SER_DISK, CLIENT_VERSION);
if (fileout.IsNull()) {
return error("WriteBlockToDisk: OpenBlockFile failed");
}
// Write index header
unsigned int nSize = GetSerializeSize(block, fileout.GetVersion());
fileout << messageStart << nSize;
// Write block
long fileOutPos = ftell(fileout.Get());
if (fileOutPos < 0) {
return error("WriteBlockToDisk: ftell failed");
}
pos.nPos = (unsigned int)fileOutPos;
fileout << block;
return true;
}
bool ReadBlockFromDisk(CBlock& block, const FlatFilePos& pos, const Consensus::Params& consensusParams)
{
block.SetNull();
// Open history file to read
CAutoFile filein(OpenBlockFile(pos, true), SER_DISK, CLIENT_VERSION);
if (filein.IsNull()) {
return error("ReadBlockFromDisk: OpenBlockFile failed for %s", pos.ToString());
}
// Read block
try {
filein >> block;
} catch (const std::exception& e) {
return error("%s: Deserialize or I/O error - %s at %s", __func__, e.what(), pos.ToString());
}
// Check the header
if (!CheckProofOfWork(block.GetHash(), block.nBits, consensusParams)) {
return error("ReadBlockFromDisk: Errors in block header at %s", pos.ToString());
}
// Signet only: check block solution
if (consensusParams.signet_blocks && !CheckSignetBlockSolution(block, consensusParams)) {
return error("ReadBlockFromDisk: Errors in block solution at %s", pos.ToString());
}
return true;
}
bool ReadBlockFromDisk(CBlock& block, const CBlockIndex* pindex, const Consensus::Params& consensusParams)
{
FlatFilePos blockPos;
{
LOCK(cs_main);
blockPos = pindex->GetBlockPos();
}
if (!ReadBlockFromDisk(block, blockPos, consensusParams)) {
return false;
}
if (block.GetHash() != pindex->GetBlockHash()) {
return error("ReadBlockFromDisk(CBlock&, CBlockIndex*): GetHash() doesn't match index for %s at %s",
pindex->ToString(), pindex->GetBlockPos().ToString());
}
return true;
}
bool ReadRawBlockFromDisk(std::vector<uint8_t>& block, const FlatFilePos& pos, const CMessageHeader::MessageStartChars& message_start)
{
FlatFilePos hpos = pos;
hpos.nPos -= 8; // Seek back 8 bytes for meta header
CAutoFile filein(OpenBlockFile(hpos, true), SER_DISK, CLIENT_VERSION);
if (filein.IsNull()) {
return error("%s: OpenBlockFile failed for %s", __func__, pos.ToString());
}
try {
CMessageHeader::MessageStartChars blk_start;
unsigned int blk_size;
filein >> blk_start >> blk_size;
if (memcmp(blk_start, message_start, CMessageHeader::MESSAGE_START_SIZE)) {
return error("%s: Block magic mismatch for %s: %s versus expected %s", __func__, pos.ToString(),
HexStr(blk_start),
HexStr(message_start));
}
if (blk_size > MAX_SIZE) {
return error("%s: Block data is larger than maximum deserialization size for %s: %s versus %s", __func__, pos.ToString(),
blk_size, MAX_SIZE);
}
block.resize(blk_size); // Zeroing of memory is intentional here
filein.read((char*)block.data(), blk_size);
} catch (const std::exception& e) {
return error("%s: Read from block file failed: %s for %s", __func__, e.what(), pos.ToString());
}
return true;
}
bool ReadRawBlockFromDisk(std::vector<uint8_t>& block, const CBlockIndex* pindex, const CMessageHeader::MessageStartChars& message_start)
{
FlatFilePos block_pos;
{
LOCK(cs_main);
block_pos = pindex->GetBlockPos();
}
return ReadRawBlockFromDisk(block, block_pos, message_start);
}
/** Store block on disk. If dbp is non-nullptr, the file is known to already reside on disk */
FlatFilePos SaveBlockToDisk(const CBlock& block, int nHeight, CChain& active_chain, const CChainParams& chainparams, const FlatFilePos* dbp)
{
unsigned int nBlockSize = ::GetSerializeSize(block, CLIENT_VERSION);
FlatFilePos blockPos;
if (dbp != nullptr) {
blockPos = *dbp;
}
if (!FindBlockPos(blockPos, nBlockSize + 8, nHeight, active_chain, block.GetBlockTime(), dbp != nullptr)) {
error("%s: FindBlockPos failed", __func__);
return FlatFilePos();
}
if (dbp == nullptr) {
if (!WriteBlockToDisk(block, blockPos, chainparams.MessageStart())) {
AbortNode("Failed to write block");
return FlatFilePos();
}
}
return blockPos;
}
struct CImportingNow {
CImportingNow()
{
assert(fImporting == false);
fImporting = true;
}
~CImportingNow()
{
assert(fImporting == true);
fImporting = false;
}
};
void ThreadImport(ChainstateManager& chainman, std::vector<fs::path> vImportFiles, const ArgsManager& args)
{
const CChainParams& chainparams = Params();
ScheduleBatchPriority();
{
CImportingNow imp;
// -reindex
if (fReindex) {
int nFile = 0;
while (true) {
FlatFilePos pos(nFile, 0);
if (!fs::exists(GetBlockPosFilename(pos))) {
break; // No block files left to reindex
}
FILE* file = OpenBlockFile(pos, true);
if (!file) {
break; // This error is logged in OpenBlockFile
}
LogPrintf("Reindexing block file blk%05u.dat...\n", (unsigned int)nFile);
chainman.ActiveChainstate().LoadExternalBlockFile(chainparams, file, &pos);
if (ShutdownRequested()) {
LogPrintf("Shutdown requested. Exit %s\n", __func__);
return;
}
nFile++;
}
pblocktree->WriteReindexing(false);
fReindex = false;
LogPrintf("Reindexing finished\n");
// To avoid ending up in a situation without genesis block, re-try initializing (no-op if reindexing worked):
chainman.ActiveChainstate().LoadGenesisBlock(chainparams);
}
// -loadblock=
for (const fs::path& path : vImportFiles) {
FILE* file = fsbridge::fopen(path, "rb");
if (file) {
LogPrintf("Importing blocks file %s...\n", path.string());
chainman.ActiveChainstate().LoadExternalBlockFile(chainparams, file);
if (ShutdownRequested()) {
LogPrintf("Shutdown requested. Exit %s\n", __func__);
return;
}
} else {
LogPrintf("Warning: Could not open blocks file %s\n", path.string());
}
}
// scan for better chains in the block chain database, that are not yet connected in the active best chain
// We can't hold cs_main during ActivateBestChain even though we're accessing
// the chainman unique_ptrs since ABC requires us not to be holding cs_main, so retrieve
// the relevant pointers before the ABC call.
for (CChainState* chainstate : WITH_LOCK(::cs_main, return chainman.GetAll())) {
BlockValidationState state;
if (!chainstate->ActivateBestChain(state, chainparams, nullptr)) {
LogPrintf("Failed to connect best block (%s)\n", state.ToString());
StartShutdown();
return;
}
}
if (args.GetBoolArg("-stopafterblockimport", DEFAULT_STOPAFTERBLOCKIMPORT)) {
LogPrintf("Stopping after block import\n");
StartShutdown();
return;
}
} // End scope of CImportingNow
chainman.ActiveChainstate().LoadMempool(args);
}
|
