fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
2.5 KiB
64 lines
2.5 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
#include "table/block_based/reader_common.h"
|
|
|
|
#include "monitoring/perf_context_imp.h"
|
|
#include "rocksdb/table.h"
|
|
#include "table/format.h"
|
|
#include "util/coding.h"
|
|
#include "util/crc32c.h"
|
|
#include "util/string_util.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
void ForceReleaseCachedEntry(void* arg, void* h) {
|
|
Cache* cache = reinterpret_cast<Cache*>(arg);
|
|
Cache::Handle* handle = reinterpret_cast<Cache::Handle*>(h);
|
|
cache->Release(handle, true /* erase_if_last_ref */);
|
|
}
|
|
|
|
// WART: this is specific to block-based table
|
|
Status VerifyBlockChecksum(const Footer& footer, const char* data,
|
|
size_t block_size, const std::string& file_name,
|
|
uint64_t offset) {
|
|
PERF_TIMER_GUARD(block_checksum_time);
|
|
|
|
assert(footer.GetBlockTrailerSize() == 5);
|
|
ChecksumType type = footer.checksum_type();
|
|
|
|
// After block_size bytes is compression type (1 byte), which is part of
|
|
// the checksummed section.
|
|
size_t len = block_size + 1;
|
|
// And then the stored checksum value (4 bytes).
|
|
uint32_t stored = DecodeFixed32(data + len);
|
|
|
|
uint32_t computed = ComputeBuiltinChecksum(type, data, len);
|
|
|
|
// Unapply context to 'stored' rather than apply to 'computed, for people
|
|
// who might look for reference crc value in error message
|
|
uint32_t modifier =
|
|
ChecksumModifierForContext(footer.base_context_checksum(), offset);
|
|
stored -= modifier;
|
|
|
|
if (stored == computed) {
|
|
return Status::OK();
|
|
} else {
|
|
// Unmask for people who might look for reference crc value
|
|
if (type == kCRC32c) {
|
|
stored = crc32c::Unmask(stored);
|
|
computed = crc32c::Unmask(computed);
|
|
}
|
|
return Status::Corruption(
|
|
"block checksum mismatch: stored" +
|
|
std::string(modifier ? "(context removed)" : "") + " = " +
|
|
std::to_string(stored) + ", computed = " + std::to_string(computed) +
|
|
", type = " + std::to_string(type) + " in " + file_name + " offset " +
|
|
std::to_string(offset) + " size " + std::to_string(block_size));
|
|
}
|
|
}
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|