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blockdb.cpp
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blockdb.cpp
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#include <blockdb.h>
#include <blockindex.h>
#include <clientversion.h>
#include <pow/pow.h>
#include <primitives/block.h>
#include <streams.h>
#include <util/system.h>
extern RecursiveMutex cs_main;
FlatFileSeq BlockFileSeq() {
return FlatFileSeq(gArgs.GetBlocksDirPath(), "blk", BLOCKFILE_CHUNK_SIZE);
}
FlatFileSeq UndoFileSeq() {
return FlatFileSeq(gArgs.GetBlocksDirPath(), "rev", UNDOFILE_CHUNK_SIZE);
}
FILE *OpenBlockFile(const FlatFilePos &pos, bool fReadOnly) {
return BlockFileSeq().Open(pos, fReadOnly);
}
/** Open an undo file (rev?????.dat) */
FILE *OpenUndoFile(const FlatFilePos &pos, bool fReadOnly) {
return UndoFileSeq().Open(pos, fReadOnly);
}
fs::path GetBlockPosFilename(const FlatFilePos &pos) {
return BlockFileSeq().FileName(pos);
}
bool ReadBlockFromDisk(CBlock &block, const FlatFilePos &pos,
const Consensus::Params &params) {
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, params)) {
return error("ReadBlockFromDisk: Errors in block header at %s",
pos.ToString());
}
return true;
}
bool ReadBlockFromDisk(CBlock &block, const CBlockIndex *pindex,
const Consensus::Params &params) {
FlatFilePos blockPos;
{
LOCK(cs_main);
blockPos = pindex->GetBlockPos();
}
if (!ReadBlockFromDisk(block, blockPos, params)) {
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;
}

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blockdb.cpp (2 KB)

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