Function BackupWallet

src/wallet/walletdb.cpp:428–463

}

bool BackupWallet(const CWallet& wallet, const string& strDest) {
    while (true) {
        {
            LOCK(bitdb.cs_db);
            if (!bitdb.mapFileUseCount.count(wallet.strWalletFile) ||
                bitdb.mapFileUseCount[wallet.strWalletFile] == 0) {
                // Flush log data to the dat file
                bitdb.CloseDb(wallet.strWalletFile);
                bitdb.CheckpointLSN(wallet.strWalletFile);
                bitdb.mapFileUseCount.erase(wallet.strWalletFile);

                // Copy wallet.dat
                boost::filesystem::path pathSrc = GetDataDir() / wallet.strWalletFile;
                boost::filesystem::path pathDest(strDest);
                if (boost::filesystem::is_directory(pathDest))
                    pathDest /= wallet.strWalletFile;

                try {
#if BOOST_VERSION >= 104000
                    boost::filesystem::copy_file(pathSrc, pathDest,
                                                 boost::filesystem::copy_option::overwrite_if_exists);
#else
                    boost::filesystem::copy_file(pathSrc, pathDest);
#endif
                    LogPrint(BCLog::INFO, "copied wallet.dat into %s\n", pathDest.string());
                    return true;
                } catch (const boost::filesystem::filesystem_error& e) {
                    LogPrint(BCLog::ERROR, "error copying wallet.dat into %s - %s\n", pathDest.string(), e.what());
                    return false;
                }
            }
        }
        MilliSleep(100);
    }
    return false;
}