Merge origin/develop: resolve conflicts keeping std::filesystem, update new GTest FileUtilities, remove stale boost::filesystem includes

# Conflicts:
#	src/test/app/GRPCServerTLS_test.cpp
#	src/test/app/SHAMapStore_test.cpp
#	src/xrpld/app/misc/SHAMapStoreImp.cpp
#	src/xrpld/app/rdb/backend/detail/Node.cpp
#	src/xrpld/core/detail/Config.cpp

include/xrpl/basics/Archive.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <boost/filesystem.hpp>
+#include <filesystem>
 
 namespace xrpl {
 
@@ -13,6 +13,6 @@ namespace xrpl {
  * @throws runtime_error
  */
 void
-extractTarLz4(boost::filesystem::path const& src, boost::filesystem::path const& dst);
+extractTarLz4(std::filesystem::path const& src, std::filesystem::path const& dst);
 
 }  // namespace xrpl

include/xrpl/basics/FileUtilities.h

@@ -1,24 +1,23 @@
 #pragma once
 
-#include <boost/filesystem.hpp>
-#include <boost/system/error_code.hpp>
-
 #include <cstddef>
+#include <filesystem>
 #include <optional>
 #include <string>
+#include <system_error>
 
 namespace xrpl {
 
 std::string
 getFileContents(
-    boost::system::error_code& ec,
-    boost::filesystem::path const& sourcePath,
+    std::error_code& ec,
+    std::filesystem::path const& sourcePath,
     std::optional<std::size_t> maxSize = std::nullopt);
 
 void
 writeFileContents(
-    boost::system::error_code& ec,
-    boost::filesystem::path const& destPath,
+    std::error_code& ec,
+    std::filesystem::path const& destPath,
     std::string const& contents);
 
 }  // namespace xrpl

include/xrpl/basics/Log.h

@@ -3,8 +3,8 @@
 #include <xrpl/beast/utility/Journal.h>
 
 #include <boost/beast/core/string.hpp>
-#include <boost/filesystem.hpp>
 
+#include <filesystem>
 #include <fstream>
 #include <map>
 #include <memory>
@@ -84,7 +84,7 @@ private:
          * @return `true` if the file was opened.
          */
         bool
-        open(boost::filesystem::path const& path);
+        open(std::filesystem::path const& path);
 
         /**
          * Close and re-open the system file associated with the log
@@ -133,7 +133,7 @@ private:
 
     private:
         std::unique_ptr<std::ofstream> stream_;
-        boost::filesystem::path path_;
+        std::filesystem::path path_;
     };
 
     std::mutex mutable mutex_;
@@ -152,7 +152,7 @@ public:
     virtual ~Logs() = default;
 
     bool
-    open(boost::filesystem::path const& pathToLogFile);
+    open(std::filesystem::path const& pathToLogFile);
 
     beast::Journal::Sink&
     get(std::string const& name);

include/xrpl/beast/unit_test/suite.h

@@ -6,11 +6,11 @@
 
 #include <xrpl/beast/unit_test/runner.h>
 
-#include <boost/filesystem.hpp>
 #include <boost/lexical_cast.hpp>
 #include <boost/throw_exception.hpp>
 
 #include <exception>
+#include <filesystem>
 #include <memory>
 #include <ostream>
 #include <sstream>
@@ -27,7 +27,7 @@ makeReason(String const& reason, char const* file, int line)
     std::string s(reason);
     if (!s.empty())
         s.append(": ");
-    namespace fs = boost::filesystem;
+    namespace fs = std::filesystem;
     s.append(fs::path{file}.filename().string());
     s.append("(");
     s.append(boost::lexical_cast<std::string>(line));

include/xrpl/beast/utility/temp_dir.h

@@ -1,20 +1,58 @@
 #pragma once
 
-#include <boost/filesystem.hpp>
-
+#include <filesystem>
+#include <iomanip>
+#include <random>
+#include <sstream>
+#include <stdexcept>
 #include <string>
+#include <system_error>
 
 namespace beast {
 
+/**
+ * Generate a unique, non-existing path under @p base with an optional @p prefix
+ * and a random hex suffix.
+ *
+ * Attempts up to @p maxAttempts paths. Throws `std::runtime_error` if a
+ * unique path cannot be found or if the filesystem returns an error while
+ * checking for existence.
+ */
+inline std::filesystem::path
+uniqueRandomPath(
+    std::filesystem::path const& base,
+    std::size_t maxAttempts = 100,
+    std::string const& prefix = "")
+{
+    std::random_device rd;
+    for (std::size_t attempt = 0; attempt < maxAttempts; ++attempt)
+    {
+        std::ostringstream oss;
+        oss << prefix << std::hex << std::setfill('0') << std::setw(8) << rd() << std::setw(8)
+            << rd();
+        auto candidate = base / oss.str();
+        std::error_code ec;
+        bool const exists = std::filesystem::exists(candidate, ec);
+        if (ec)
+        {
+            throw std::runtime_error(
+                "Unable to check path '" + candidate.string() + "': " + ec.message());
+        }
+        if (!exists)
+            return candidate;
+    }
+    throw std::runtime_error("Unable to generate a unique path under '" + base.string() + "'");
+}
+
 /**
  * RAII temporary directory.
  *
  * The directory and all its contents are deleted when
- * the instance of `temp_dir` is destroyed.
+ * the instance of `TempDir` is destroyed.
  */
 class TempDir
 {
-    boost::filesystem::path path_;
+    std::filesystem::path path_;
 
 public:
 #if !GENERATING_DOCS
@@ -28,12 +66,8 @@ public:
      */
     TempDir()
     {
-        auto const dir = boost::filesystem::temp_directory_path();
-        do
-        {
-            path_ = dir / boost::filesystem::unique_path();
-        } while (boost::filesystem::exists(path_));
-        boost::filesystem::create_directory(path_);
+        path_ = uniqueRandomPath(std::filesystem::temp_directory_path());
+        std::filesystem::create_directory(path_);
     }
 
     /**
@@ -42,8 +76,8 @@ public:
     ~TempDir()
     {
         // use non-throwing calls in the destructor
-        boost::system::error_code ec;
-        boost::filesystem::remove_all(path_, ec);
+        std::error_code ec;
+        std::filesystem::remove_all(path_, ec);
         // TODO: warn/notify if ec set ?
     }
 

include/xrpl/core/PerfLog.h

@@ -4,10 +4,9 @@
 #include <xrpl/core/Job.h>
 #include <xrpl/json/json_value.h>
 
-#include <boost/filesystem.hpp>
-
 #include <chrono>
 #include <cstdint>
+#include <filesystem>
 #include <functional>
 #include <memory>
 #include <string>
@@ -44,7 +43,7 @@ public:
      */
     struct Setup
     {
-        boost::filesystem::path perfLog;
+        std::filesystem::path perfLog;
         // log_interval is in milliseconds to support faster testing.
         milliseconds logInterval{seconds(1)};
     };
@@ -149,7 +148,7 @@ public:
 };
 
 PerfLog::Setup
-setupPerfLog(Section const& section, boost::filesystem::path const& configDir);
+setupPerfLog(Section const& section, std::filesystem::path const& configDir);
 
 std::unique_ptr<PerfLog>
 makePerfLog(

include/xrpl/rdb/DatabaseCon.h

@@ -6,13 +6,12 @@
 #include <xrpl/core/StartUpType.h>
 #include <xrpl/rdb/SociDB.h>
 
-#include <boost/filesystem/path.hpp>
-
 #include <soci/statement.h>
 
 #include <array>
 #include <cstddef>
 #include <cstdint>
+#include <filesystem>
 #include <functional>
 #include <memory>
 #include <mutex>
@@ -80,7 +79,7 @@ public:
 
         StartUpType startUp = StartUpType::Normal;
         bool standAlone = false;
-        boost::filesystem::path dataDir;
+        std::filesystem::path dataDir;
         // Indicates whether or not to return the `globalPragma`
         // from commonPragma()
         bool useGlobalPragma = false;
@@ -143,7 +142,7 @@ public:
 
     template <std::size_t N, std::size_t M>
     DatabaseCon(
-        boost::filesystem::path const& dataDir,
+        std::filesystem::path const& dataDir,
         std::string const& dbName,
         std::array<std::string, N> const& pragma,
         std::array<char const*, M> const& initSQL,
@@ -155,7 +154,7 @@ public:
     // Use this constructor to setup checkpointing
     template <std::size_t N, std::size_t M>
     DatabaseCon(
-        boost::filesystem::path const& dataDir,
+        std::filesystem::path const& dataDir,
         std::string const& dbName,
         std::array<std::string, N> const& pragma,
         std::array<char const*, M> const& initSQL,
@@ -190,7 +189,7 @@ private:
 
     template <std::size_t N, std::size_t M>
     DatabaseCon(
-        boost::filesystem::path const& pPath,
+        std::filesystem::path const& pPath,
         std::vector<std::string> const* commonPragma,
         std::array<std::string, N> const& pragma,
         std::array<char const*, M> const& initSQL,

include/xrpl/rdb/RelationalDatabase.h

@@ -14,7 +14,6 @@
 #include <xrpl/protocol/TxMeta.h>
 #include <xrpl/protocol/TxSearched.h>
 
-#include <boost/filesystem.hpp>
 #include <boost/variant.hpp>
 
 #include <concepts>

include/xrpl/server/State.h

@@ -4,10 +4,9 @@
 #include <xrpl/rdb/DatabaseCon.h>
 #include <xrpl/rdb/SociDB.h>
 
-#include <boost/filesystem.hpp>
-
 #include <string>
 
+
 namespace xrpl {
 
 struct SavedState

src/libxrpl/basics/Archive.cpp

@@ -2,22 +2,20 @@
 
 #include <xrpl/basics/contract.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-
 #include <archive.h>
 #include <archive_entry.h>
 
 #include <cstddef>
+#include <filesystem>
 #include <memory>
 #include <stdexcept>
 
 namespace xrpl {
 
 void
-extractTarLz4(boost::filesystem::path const& src, boost::filesystem::path const& dst)
+extractTarLz4(std::filesystem::path const& src, std::filesystem::path const& dst)
 {
-    if (!is_regular_file(src))
+    if (!std::filesystem::is_regular_file(src))
         Throw<std::runtime_error>("Invalid source file");
 
     using archive_ptr = std::unique_ptr<struct archive, void (*)(struct archive*)>;

src/libxrpl/basics/FileUtilities.cpp

@@ -1,29 +1,24 @@
 #include <xrpl/basics/FileUtilities.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-#include <boost/system/detail/errc.hpp>
-#include <boost/system/detail/error_code.hpp>
-#include <boost/system/errc.hpp>
-
 #include <cerrno>
 #include <cstddef>
+#include <filesystem>
 #include <fstream>
 #include <ios>
 #include <iterator>
 #include <optional>
 #include <string>
+#include <system_error>
 
 namespace xrpl {
 
 std::string
 getFileContents(
-    boost::system::error_code& ec,
-    boost::filesystem::path const& sourcePath,
+    std::error_code& ec,
+    std::filesystem::path const& sourcePath,
     std::optional<std::size_t> maxSize)
 {
-    using namespace boost::filesystem;
-    using namespace boost::system::errc;
+    using namespace std::filesystem;
 
     path const fullPath{canonical(sourcePath, ec)};
     if (ec)
@@ -32,15 +27,15 @@ getFileContents(
     if (maxSize && (file_size(fullPath, ec) > *maxSize || ec))
     {
         if (!ec)
-            ec = make_error_code(file_too_large);
+            ec = make_error_code(std::errc::file_too_large);
         return {};
     }
 
-    std::ifstream fileStream(fullPath.string(), std::ios::in);
+    std::ifstream fileStream(fullPath, std::ios::in);
 
     if (!fileStream)
     {
-        ec = make_error_code(static_cast<errc_t>(errno));
+        ec.assign(errno, std::generic_category());
         return {};
     }
 
@@ -49,7 +44,7 @@ getFileContents(
 
     if (fileStream.bad())
     {
-        ec = make_error_code(static_cast<errc_t>(errno));
+        ec.assign(errno, std::generic_category());
         return {};
     }
 
@@ -58,18 +53,15 @@ getFileContents(
 
 void
 writeFileContents(
-    boost::system::error_code& ec,
-    boost::filesystem::path const& destPath,
+    std::error_code& ec,
+    std::filesystem::path const& destPath,
     std::string const& contents)
 {
-    using namespace boost::filesystem;
-    using namespace boost::system::errc;
-
-    std::ofstream fileStream(destPath.string(), std::ios::out | std::ios::trunc);
+    std::ofstream fileStream(destPath, std::ios::out | std::ios::trunc);
 
     if (!fileStream)
     {
-        ec = make_error_code(static_cast<errc_t>(errno));
+        ec.assign(errno, std::generic_category());
         return;
     }
 
@@ -77,7 +69,7 @@ writeFileContents(
 
     if (fileStream.bad())
     {
-        ec = make_error_code(static_cast<errc_t>(errno));
+        ec.assign(errno, std::generic_category());
         return;
     }
 }

src/libxrpl/basics/Log.cpp

@@ -5,10 +5,10 @@
 #include <xrpl/beast/utility/instrumentation.h>
 
 #include <boost/algorithm/string/predicate.hpp>
-#include <boost/filesystem/path.hpp>
 
 #include <chrono>
 #include <cstring>
+#include <filesystem>
 #include <fstream>
 #include <functional>
 #include <iostream>
@@ -54,7 +54,7 @@ Logs::File::isOpen() const noexcept
 }
 
 bool
-Logs::File::open(boost::filesystem::path const& path)
+Logs::File::open(std::filesystem::path const& path)
 {
     close();
 
@@ -114,7 +114,7 @@ Logs::Logs(beast::Severity thresh) : thresh_(thresh)  // default severity
 }
 
 bool
-Logs::open(boost::filesystem::path const& pathToLogFile)
+Logs::open(std::filesystem::path const& pathToLogFile)
 {
     return file_.open(pathToLogFile);
 }

src/libxrpl/nodestore/backend/NuDBFactory.cpp

@@ -16,8 +16,6 @@
 #include <xrpl/nodestore/detail/EncodedBlob.h>
 #include <xrpl/nodestore/detail/codec.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
 #include <boost/system/detail/errc.hpp>
 
 #include <nudb/context.hpp>
@@ -36,12 +34,14 @@
 #include <cstdint>
 #include <cstdio>
 #include <exception>
+#include <filesystem>
 #include <functional>
 #include <memory>
 #include <optional>
 #include <sstream>
 #include <stdexcept>
 #include <string>
+#include <system_error>
 #include <utility>
 
 namespace xrpl::NodeStore {
@@ -131,7 +131,7 @@ public:
     void
     open(bool createIfMissing, uint64_t appType, uint64_t uid, uint64_t salt) override
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         if (db.is_open())
         {
             // LCOV_EXCL_START
@@ -194,11 +194,12 @@ public:
 
             if (deletePath)
             {
-                boost::filesystem::remove_all(name, ec);
-                if (ec)
+                std::error_code fsec;
+                std::filesystem::remove_all(name, fsec);
+                if (fsec)
                 {
-                    JLOG(j.fatal())
-                        << "Filesystem remove_all of " << name << " failed with: " << ec.message();
+                    JLOG(j.fatal()) << "Filesystem remove_all of " << name
+                                    << " failed with: " << fsec.message();
                 }
             }
         }
@@ -352,7 +353,7 @@ private:
     static std::size_t
     parseBlockSize(std::string const& name, Section const& keyValues, beast::Journal journal)
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         auto const folder = path(name);
         auto const kp = (folder / "nudb.key").string();
 

src/libxrpl/nodestore/backend/RocksDBFactory.cpp

@@ -19,9 +19,6 @@
 #include <xrpl/nodestore/detail/DecodedBlob.h>
 #include <xrpl/nodestore/detail/EncodedBlob.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-
 #include <rocksdb/advanced_options.h>
 #include <rocksdb/cache.h>
 #include <rocksdb/compression_type.h>
@@ -37,6 +34,7 @@
 
 #include <atomic>
 #include <cstddef>
+#include <filesystem>
 #include <functional>
 #include <memory>
 #include <stdexcept>
@@ -262,8 +260,8 @@ public:
             db.reset();
             if (deletePath_)
             {
-                boost::filesystem::path const dir = name;
-                boost::filesystem::remove_all(dir);
+                std::filesystem::path const dir = name;
+                std::filesystem::remove_all(dir);
             }
         }
     }

src/libxrpl/rdb/SociDB.cpp

@@ -5,13 +5,11 @@
 #include <xrpl/core/JobQueue.h>
 #include <xrpl/core/ServiceRegistry.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-
 #include <soci/blob.h>
 
 #include <cstddef>
 #include <cstdint>
+#include <filesystem>
 #include <mutex>
 #include <stdexcept>
 #include <string>
@@ -45,8 +43,8 @@ getSociSqliteInit(std::string const& name, std::string const& dir, std::string c
         Throw<std::runtime_error>(
             "Sqlite databases must specify a dir and a name. Name: " + name + " Dir: " + dir);
     }
-    boost::filesystem::path file(dir);
-    if (is_directory(file))
+    std::filesystem::path file(dir);
+    if (std::filesystem::is_directory(file))
         file /= name + ext;
     return file.string();
 }

src/libxrpl/server/Vacuum.cpp

@@ -5,13 +5,12 @@
 #include <xrpl/rdb/DBInit.h>
 #include <xrpl/rdb/DatabaseCon.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
 #include <boost/format.hpp>  // IWYU pragma: keep
 
 #include <soci/into.h>
 
 #include <cstdint>
+#include <filesystem>
 #include <iostream>
 #include <memory>
 
@@ -20,12 +19,12 @@ namespace xrpl {
 bool
 doVacuumDB(DatabaseCon::Setup const& setup, beast::Journal j)
 {
-    boost::filesystem::path const dbPath = setup.dataDir / kTxDbName;
+    std::filesystem::path const dbPath = setup.dataDir / kTxDbName;
 
-    uintmax_t const dbSize = file_size(dbPath);
+    uintmax_t const dbSize = std::filesystem::file_size(dbPath);
     XRPL_ASSERT(dbSize != static_cast<uintmax_t>(-1), "xrpl::doVacuumDB : file_size succeeded");
 
-    if (auto available = space(dbPath.parent_path()).available; available < dbSize)
+    if (auto available = std::filesystem::space(dbPath.parent_path()).available; available < dbSize)
     {
         std::cerr << "The database filesystem must have at least as "
                      "much free space as the size of "

src/test/app/GRPCServerTLS_test.cpp

@@ -2,12 +2,11 @@
 #include <test/jtx/envconfig.h>
 
 #include <xrpl/beast/unit_test/suite.h>
+#include <xrpl/beast/utility/temp_dir.h>
 #include <xrpl/config/Constants.h>
 #include <xrpl/proto/org/xrpl/rpc/v1/get_ledger.pb.h>
 #include <xrpl/proto/org/xrpl/rpc/v1/xrp_ledger.grpc.pb.h>
 
-#include <boost/filesystem/operations.hpp>
-
 #include <grpcpp/client_context.h>
 #include <grpcpp/create_channel.h>
 #include <grpcpp/grpcpp.h>
@@ -17,6 +16,7 @@
 #include <chrono>
 #include <filesystem>
 #include <fstream>
+#include <ios>
 #include <memory>
 #include <stdexcept>
 #include <string>
@@ -254,10 +254,8 @@ public:
 
     TemporaryTLSCertificates()
     {
-        auto tmpDir = std::filesystem::temp_directory_path();
-        auto uniqueDirName =
-            boost::filesystem::unique_path(std::string(kCertsDirPrefix) + "%%%%%%%%");
-        tempDir_ = tmpDir / uniqueDirName.string();
+        tempDir_ = beast::uniqueRandomPath(
+            std::filesystem::temp_directory_path(), 100, std::string(kCertsDirPrefix));
         std::filesystem::create_directories(tempDir_);
 
         writeFile(tempDir_ / kCaCertFilename, kCaCertContent);

src/test/app/LedgerLoad_test.cpp

@@ -18,16 +18,16 @@
 #include <xrpl/protocol/jss.h>
 
 #include <boost/algorithm/string/erase.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/system/detail/error_code.hpp>
 
 #include <cassert>
+#include <filesystem>
 #include <fstream>
 #include <ios>
 #include <memory>
 #include <optional>
 #include <stdexcept>
 #include <string>
+#include <system_error>
 
 namespace xrpl {
 
@@ -139,7 +139,7 @@ class LedgerLoad_test : public beast::unit_test::Suite
     {
         testcase("Load ledger: Bad Files");
         using namespace test::jtx;
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
 
         // empty path
         except([&] {
@@ -161,8 +161,8 @@ class LedgerLoad_test : public beast::unit_test::Suite
         });
 
         // make a corrupted version of the ledger file (last 10 bytes removed).
-        boost::system::error_code ec;
-        auto ledgerFileCorrupt = boost::filesystem::path{sd.dbPath} / "ledgerdata_bad.json";
+        std::error_code ec;
+        auto ledgerFileCorrupt = std::filesystem::path{sd.dbPath} / "ledgerdata_bad.json";
         copy_file(sd.ledgerFile, ledgerFileCorrupt, copy_options::overwrite_existing, ec);
         if (!BEAST_EXPECTS(!ec, ec.message()))
             return;

src/test/app/Manifest_test.cpp

@@ -22,14 +22,12 @@
 #include <xrpl/server/Manifest.h>
 #include <xrpl/server/Wallet.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-
 #include <algorithm>
 #include <array>
 #include <cassert>
 #include <cstdint>
 #include <exception>
+#include <filesystem>
 #include <limits>
 #include <memory>
 #include <optional>
@@ -56,18 +54,18 @@ private:
     }
 
     static void
-    cleanupDatabaseDir(boost::filesystem::path const& dbPath)
+    cleanupDatabaseDir(std::filesystem::path const& dbPath)
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         if (!exists(dbPath) || !is_directory(dbPath) || !is_empty(dbPath))
             return;
         remove(dbPath);
     }
 
     static void
-    setupDatabaseDir(boost::filesystem::path const& dbPath)
+    setupDatabaseDir(std::filesystem::path const& dbPath)
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         if (!exists(dbPath))
         {
             create_directory(dbPath);
@@ -80,10 +78,10 @@ private:
             Throw<std::runtime_error>("Cannot create directory: " + dbPath.string());
         }
     }
-    static boost::filesystem::path
+    static std::filesystem::path
     getDatabasePath()
     {
-        return boost::filesystem::current_path() / "manifest_test_databases";
+        return std::filesystem::current_path() / "manifest_test_databases";
     }
 
 public:
@@ -351,7 +349,7 @@ public:
                 BEAST_EXPECT(loaded.revoked(pk));
             }
         }
-        boost::filesystem::remove(getDatabasePath() / boost::filesystem::path(dbName));
+        std::filesystem::remove(getDatabasePath() / std::filesystem::path(dbName));
     }
 
     void

src/test/app/SHAMapStore_test.cpp

@@ -23,10 +23,9 @@
 #include <xrpl/protocol/XRPAmount.h>
 #include <xrpl/protocol/jss.h>
 
-#include <boost/filesystem/path.hpp>
-
 #include <atomic>
 #include <cstdint>
+#include <filesystem>
 #include <limits>
 #include <map>
 #include <memory>
@@ -493,7 +492,7 @@ public:
     makeBackendRotating(jtx::Env& env, NodeStoreScheduler& scheduler, std::string path)
     {
         Section section{env.app().config().section(Sections::kNodeDatabase)};
-        boost::filesystem::path newPath;
+        std::filesystem::path newPath;
 
         if (!BEAST_EXPECT(path.size()))
             return {};

src/test/app/ValidatorSite_test.cpp

@@ -15,13 +15,12 @@
 #include <xrpl/protocol/jss.h>
 
 #include <boost/algorithm/string/join.hpp>
-#include <boost/filesystem/directory.hpp>
-#include <boost/filesystem/operations.hpp>
 #include <boost/range/adaptor/transformed.hpp>
 
 #include <date/date.h>
 
 #include <chrono>
+#include <filesystem>
 #include <fstream>
 #include <memory>
 #include <ostream>
@@ -704,7 +703,7 @@ public:
                   .effectiveOverlap = detail::kDefaultEffectiveOverlap,
                   .expectedRefreshMin = 60 * 24}});  // max of 24 hours
         }
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         for (auto const& file : directory_iterator(good.subdir()))
         {
             remove_all(file);

src/test/basics/PerfLog_test.cpp

@@ -15,14 +15,10 @@
 #include <xrpl/protocol/ErrorCodes.h>
 #include <xrpl/protocol/jss.h>
 
-#include <boost/filesystem/file_status.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-#include <boost/system/detail/error_code.hpp>
-
 #include <algorithm>
 #include <chrono>
 #include <cstdint>
+#include <filesystem>
 #include <fstream>
 #include <ios>
 #include <iterator>
@@ -31,6 +27,7 @@
 #include <ostream>
 #include <random>
 #include <string>
+#include <system_error>
 #include <thread>
 #include <utility>
 #include <vector>
@@ -43,7 +40,7 @@ class PerfLog_test : public beast::unit_test::Suite
 {
     enum class WithFile : bool { No = false, Yes = true };
 
-    using path = boost::filesystem::path;
+    using path = std::filesystem::path;
 
     // We're only using Env for its Journal.  That Journal gives better
     // coverage in unit tests.
@@ -66,14 +63,14 @@ class PerfLog_test : public beast::unit_test::Suite
             // The error code is intentionally ignored: if the path doesn't
             // exist (the common case on a clean runner) remove_all returns
             // an error, and that's fine — there's nothing to clean up.
-            using namespace boost::filesystem;
-            boost::system::error_code ec;
+            using namespace std::filesystem;
+            std::error_code ec;
             remove_all(logDir(), ec);
         }
 
         ~Fixture()
         {
-            using namespace boost::filesystem;
+            using namespace std::filesystem;
 
             auto const dir{logDir()};
             auto const file{logFile()};
@@ -96,7 +93,7 @@ class PerfLog_test : public beast::unit_test::Suite
         static path
         logDir()
         {
-            using namespace boost::filesystem;
+            using namespace std::filesystem;
             return temp_directory_path() / "perf_log_test_dir";
         }
 
@@ -129,7 +126,7 @@ class PerfLog_test : public beast::unit_test::Suite
         static void
         wait()
         {
-            using namespace boost::filesystem;
+            using namespace std::filesystem;
 
             auto const path = logFile();
             if (!exists(path))
@@ -201,7 +198,7 @@ public:
     void
     testFileCreation()
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
 
         {
             // Verify a PerfLog creates its file when constructed.
@@ -256,22 +253,23 @@ public:
 
             // Construct and write protect a file to prevent PerfLog
             // from creating its file.
-            boost::system::error_code ec;
-            boost::filesystem::create_directories(fixture.logDir(), ec);
+            std::error_code ec;
+            std::filesystem::create_directories(fixture.logDir(), ec);
             if (!BEAST_EXPECT(!ec))
                 return;
 
-            auto fileWriteable = [](boost::filesystem::path const& p) -> bool {
-                return std::ofstream{p.c_str(), std::ios::out | std::ios::app}.is_open();
+            auto fileWriteable = [](std::filesystem::path const& p) -> bool {
+                return std::ofstream{p, std::ios::out | std::ios::app}.is_open();
             };
 
             if (!BEAST_EXPECT(fileWriteable(fixture.logFile())))
                 return;
 
-            boost::filesystem::permissions(
+            std::filesystem::permissions(
                 fixture.logFile(),
-                perms::remove_perms | perms::owner_write | perms::others_write |
-                    perms::group_write);
+                std::filesystem::perms::owner_write | std::filesystem::perms::others_write |
+                    std::filesystem::perms::group_write,
+                std::filesystem::perm_options::remove);
 
             // If the test is running as root, then the write protect may have
             // no effect.  Make sure write protect worked before proceeding.
@@ -295,9 +293,11 @@ public:
             perfLog->stop();
 
             // Fix file permissions so the file can be cleaned up.
-            boost::filesystem::permissions(
+            std::filesystem::permissions(
                 fixture.logFile(),
-                perms::add_perms | perms::owner_write | perms::others_write | perms::group_write);
+                std::filesystem::perms::owner_write | std::filesystem::perms::others_write |
+                    std::filesystem::perms::group_write,
+                std::filesystem::perm_options::add);
         }
     }
 
@@ -962,7 +962,7 @@ public:
         // We can't fully test rotate because unit tests must run on Windows,
         // and Windows doesn't (may not?) support rotate.  But at least call
         // the interface and see that it doesn't crash.
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
 
         Fixture fixture{env_.app(), j_};
         BEAST_EXPECT(!exists(fixture.logDir()));

src/test/core/Config_test.cpp

@@ -10,7 +10,6 @@
 #include <xrpl/protocol/SystemParameters.h>  // IWYU pragma: keep
 #include <xrpl/server/Port.h>
 
-#include <boost/filesystem/operations.hpp>
 #include <boost/format.hpp>  // IWYU pragma: keep
 #include <boost/format/free_funcs.hpp>
 #include <boost/lexical_cast/bad_lexical_cast.hpp>
@@ -20,6 +19,7 @@
 #include <cstdint>
 #include <cstdlib>
 #include <exception>
+#include <filesystem>
 #include <fstream>
 #include <optional>
 #include <ostream>
@@ -179,7 +179,7 @@ public:
     [[nodiscard]] bool
     dataDirExists() const
     {
-        return boost::filesystem::is_directory(dataDir_);
+        return std::filesystem::is_directory(dataDir_);
     }
 
     [[nodiscard]] bool
@@ -192,7 +192,7 @@ public:
     {
         try
         {
-            using namespace boost::filesystem;
+            using namespace std::filesystem;
             if (rmDataDir_)
                 rmDir(dataDir_);
         }
@@ -273,7 +273,7 @@ public:
 class Config_test final : public TestSuite
 {
 private:
-    using path = boost::filesystem::path;
+    using path = std::filesystem::path;
 
 public:
     void
@@ -309,7 +309,7 @@ port_wss_admin
     {
         testcase("config_file");
 
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         auto const cwd = current_path();
 
         // Test both config file names.
@@ -425,7 +425,7 @@ port_wss_admin
     {
         testcase("database_path");
 
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         {
             boost::format cc("[database_path]\n%1%\n");
 
@@ -601,7 +601,7 @@ main
     {
         testcase("validators_file");
 
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         {
             // load should throw for missing specified validators file
             boost::format cc("[validators_file]\n%1%\n");

src/test/core/SociDB_test.cpp

@@ -7,8 +7,6 @@
 #include <xrpl/rdb/SociDB.h>
 
 #include <boost/algorithm/string/predicate.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
 #include <boost/optional/optional.hpp>  // IWYU pragma: keep
 
 #include <soci/boost-optional.h>  // IWYU pragma: keep
@@ -20,6 +18,7 @@
 #include <cstdint>
 #include <cstring>
 #include <exception>
+#include <filesystem>
 #include <iterator>
 #include <limits>
 #include <stdexcept>
@@ -32,7 +31,7 @@ class SociDB_test final : public TestSuite
 {
 private:
     static void
-    setupSQLiteConfig(BasicConfig& config, boost::filesystem::path const& dbPath)
+    setupSQLiteConfig(BasicConfig& config, std::filesystem::path const& dbPath)
     {
         config.overwrite(Sections::kSqdb, Keys::kBackend, "sqlite");
         auto value = dbPath.string();
@@ -41,18 +40,18 @@ private:
     }
 
     static void
-    cleanupDatabaseDir(boost::filesystem::path const& dbPath)
+    cleanupDatabaseDir(std::filesystem::path const& dbPath)
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         if (!exists(dbPath) || !is_directory(dbPath) || !is_empty(dbPath))
             return;
         remove(dbPath);
     }
 
     static void
-    setupDatabaseDir(boost::filesystem::path const& dbPath)
+    setupDatabaseDir(std::filesystem::path const& dbPath)
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
         if (!exists(dbPath))
         {
             create_directory(dbPath);
@@ -65,10 +64,10 @@ private:
             Throw<std::runtime_error>("Cannot create directory: " + dbPath.string());
         }
     }
-    static boost::filesystem::path
+    static std::filesystem::path
     getDatabasePath()
     {
-        return boost::filesystem::current_path() / "socidb_test_databases";
+        return std::filesystem::current_path() / "socidb_test_databases";
     }
 
 public:
@@ -158,7 +157,7 @@ public:
             checkValues(s);
         }
         {
-            namespace bfs = boost::filesystem;
+            namespace bfs = std::filesystem;
             // Remove the database
             bfs::path const dbPath(sc.connectionString());
             if (bfs::is_regular_file(dbPath))
@@ -288,7 +287,7 @@ public:
 #endif
         }
         {
-            namespace bfs = boost::filesystem;
+            namespace bfs = std::filesystem;
             // Remove the database
             bfs::path const dbPath(sc.connectionString());
             if (bfs::is_regular_file(dbPath))
@@ -340,7 +339,7 @@ public:
             s << "SELECT LedgerSeq FROM Ledgers;", soci::into(ledgersLS);
             BEAST_EXPECT(ledgersLS.size() == numRows);
         }
-        namespace bfs = boost::filesystem;
+        namespace bfs = std::filesystem;
         // Remove the database
         bfs::path const dbPath(sc.connectionString());
         if (bfs::is_regular_file(dbPath))

src/test/unit_test/FileDirGuard.h

@@ -3,9 +3,8 @@
 #include <xrpl/basics/contract.h>
 #include <xrpl/beast/unit_test/suite.h>
 
-#include <boost/filesystem.hpp>
-
 #include <exception>
+#include <filesystem>
 #include <fstream>
 #include <ostream>
 #include <stdexcept>
@@ -20,7 +19,7 @@ namespace xrpl::detail {
 class DirGuard
 {
 protected:
-    using path = boost::filesystem::path;
+    using path = std::filesystem::path;
 
 private:
     path subDir_;
@@ -47,7 +46,7 @@ public:
     DirGuard(beast::unit_test::Suite& test, path subDir, bool useCounter = true)
         : subDir_(std::move(subDir)), test_(test)
     {
-        using namespace boost::filesystem;
+        using namespace std::filesystem;
 
         static auto kSubDirCounter = 0;
         if (useCounter)
@@ -73,7 +72,7 @@ public:
     {
         try
         {
-            using namespace boost::filesystem;
+            using namespace std::filesystem;
 
             if (rmSubDir_)
                 rmDir(subDir_);
@@ -130,7 +129,7 @@ public:
     {
         try
         {
-            using namespace boost::filesystem;
+            using namespace std::filesystem;
             if (exists(file_))
             {
                 remove(file_);
@@ -160,7 +159,7 @@ public:
     [[nodiscard]] bool
     fileExists() const
     {
-        return boost::filesystem::exists(file_);
+        return std::filesystem::exists(file_);
     }
 };
 

src/tests/libxrpl/basics/FileUtilities.cpp

@@ -1,17 +1,16 @@
 #include <xrpl/basics/FileUtilities.h>
 
 #include <xrpl/basics/ByteUtilities.h>
-
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
-#include <boost/system/detail/errc.hpp>
-#include <boost/system/detail/error_code.hpp>
+#include <xrpl/beast/utility/temp_dir.h>
 
 #include <gtest/gtest.h>
 
+#include <cerrno>
+#include <filesystem>
 #include <fstream>
 #include <stdexcept>
 #include <string>
+#include <system_error>
 
 namespace xrpl {
 
@@ -20,15 +19,16 @@ namespace {
 class TempFile
 {
 public:
-    explicit TempFile(boost::filesystem::path file, std::string const& contents)
-        : dir_(
-              boost::filesystem::temp_directory_path() /
-              boost::filesystem::unique_path("xrpl-file-utilities-%%%%-%%%%-%%%%"))
+    explicit TempFile(std::filesystem::path file, std::string const& contents)
+        : dir_(beast::uniqueRandomPath(
+              std::filesystem::temp_directory_path(),
+              100,
+              "xrpl-file-utilities-"))
         , file_(dir_ / file)
     {
-        boost::filesystem::create_directory(dir_);
+        std::filesystem::create_directory(dir_);
 
-        std::ofstream output(file_.string());
+        std::ofstream output(file_);
         if (!output)
             throw std::runtime_error("Unable to create temporary test file");
 
@@ -37,33 +37,31 @@ public:
 
     ~TempFile()
     {
-        boost::system::error_code ec;
-        boost::filesystem::remove(file_, ec);
-        boost::filesystem::remove(dir_, ec);
+        std::error_code ec;
+        std::filesystem::remove(file_, ec);
+        std::filesystem::remove(dir_, ec);
     }
 
-    [[nodiscard]] boost::filesystem::path const&
+    [[nodiscard]] std::filesystem::path const&
     file() const
     {
         return file_;
     }
 
 private:
-    boost::filesystem::path dir_;
-    boost::filesystem::path file_;
+    std::filesystem::path dir_;
+    std::filesystem::path file_;
 };
 
 }  // namespace
 
 TEST(FileUtilitiesTest, get_file_contents)
 {
-    using namespace boost::system;
-
     constexpr char const* kExpectedContents = "This file is very short. That's all we need.";
 
     TempFile const file("test_file", "This is temporary text that should get overwritten");
 
-    error_code ec;
+    std::error_code ec;
     auto const path = file.file();
 
     writeFileContents(ec, path, kExpectedContents);
@@ -86,7 +84,7 @@ TEST(FileUtilitiesTest, get_file_contents)
     {
         // Test with small max
         auto const bad = getFileContents(ec, path, 16);
-        EXPECT_TRUE(ec && ec.value() == boost::system::errc::file_too_large);
+        EXPECT_TRUE(ec && ec.value() == static_cast<int>(std::errc::file_too_large));
         EXPECT_TRUE(bad.empty());
     }
 }

src/xrpld/app/main/GRPCServer.cpp

@@ -49,6 +49,7 @@
 #include <sstream>
 #include <stdexcept>
 #include <string>
+#include <system_error>
 #include <utility>
 #include <vector>
 
@@ -615,7 +616,7 @@ GRPCServerImpl::createServerCredentials()
 
     try
     {
-        boost::system::error_code ec;
+        std::error_code ec;
         grpc::SslServerCredentialsOptions sslOpts;
         grpc::SslServerCredentialsOptions::PemKeyCertPair keyCertPair;
 

src/xrpld/app/misc/SHAMapStoreImp.cpp

@@ -11,6 +11,7 @@
 #include <xrpl/beast/core/CurrentThreadName.h>
 #include <xrpl/beast/utility/Journal.h>
 #include <xrpl/beast/utility/instrumentation.h>
+#include <xrpl/beast/utility/temp_dir.h>
 #include <xrpl/config/BasicConfig.h>
 #include <xrpl/config/Constants.h>
 #include <xrpl/ledger/Ledger.h>
@@ -25,13 +26,12 @@
 #include <xrpl/shamap/SHAMapTreeNode.h>
 
 #include <boost/algorithm/string/predicate.hpp>
-#include <boost/filesystem/directory.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
 
 #include <algorithm>
 #include <cstdint>
+#include <filesystem>
 #include <functional>
+#include <ios>
 #include <limits>
 #include <memory>
 #include <mutex>
@@ -391,10 +391,10 @@ SHAMapStoreImp::dbPaths()
     if (boost::iequals(get(section, Keys::kType), "memory"))
         return;
 
-    boost::filesystem::path dbPath = get(section, Keys::kPath);
-    if (boost::filesystem::exists(dbPath))
+    std::filesystem::path dbPath = get(section, Keys::kPath);
+    if (std::filesystem::exists(dbPath))
     {
-        if (!boost::filesystem::is_directory(dbPath))
+        if (!std::filesystem::is_directory(dbPath))
         {
             journal_.error() << "node db path must be a directory. " << dbPath.string();
             Throw<std::runtime_error>("node db path must be a directory.");
@@ -402,7 +402,7 @@ SHAMapStoreImp::dbPaths()
     }
     else
     {
-        boost::filesystem::create_directories(dbPath);
+        std::filesystem::create_directories(dbPath);
     }
 
     SavedState state = stateDb_.getState();
@@ -413,8 +413,8 @@ SHAMapStoreImp::dbPaths()
                 return false;
 
             // Check if configured "path" matches stored directory path
-            using namespace boost::filesystem;
-            auto const stored{path(sPath)};
+            using namespace std::filesystem;
+            auto const stored{std::filesystem::path(sPath)};
             if (stored.parent_path() == dbPath)
                 return false;
 
@@ -432,9 +432,9 @@ SHAMapStoreImp::dbPaths()
     bool writableDbExists = false;
     bool archiveDbExists = false;
 
-    std::vector<boost::filesystem::path> pathsToDelete;
-    for (boost::filesystem::directory_iterator it(dbPath);
-         it != boost::filesystem::directory_iterator();
+    std::vector<std::filesystem::path> pathsToDelete;
+    for (std::filesystem::directory_iterator it(dbPath);
+         it != std::filesystem::directory_iterator();
          ++it)
     {
         if (state.writableDb.compare(it->path().string()) == 0)
@@ -455,7 +455,7 @@ SHAMapStoreImp::dbPaths()
         (!archiveDbExists && !state.archiveDb.empty()) || (writableDbExists != archiveDbExists) ||
         state.writableDb.empty() != state.archiveDb.empty())
     {
-        boost::filesystem::path stateDbPathName = app_.config().legacy(Sections::kDatabasePath);
+        std::filesystem::path stateDbPathName = app_.config().legacy(Sections::kDatabasePath);
         stateDbPathName /= dbName_;
         stateDbPathName += "*";
 
@@ -477,15 +477,15 @@ SHAMapStoreImp::dbPaths()
     }
 
     // The necessary directories exist. Now, remove any others.
-    for (boost::filesystem::path const& p : pathsToDelete)
-        boost::filesystem::remove_all(p);
+    for (std::filesystem::path const& p : pathsToDelete)
+        std::filesystem::remove_all(p);
 }
 
 std::unique_ptr<NodeStore::Backend>
 SHAMapStoreImp::makeBackendRotating(std::string path)
 {
     Section section{app_.config().section(Sections::kNodeDatabase)};
-    boost::filesystem::path newPath;
+    std::filesystem::path newPath;
 
     if (!path.empty())
     {
@@ -493,10 +493,7 @@ SHAMapStoreImp::makeBackendRotating(std::string path)
     }
     else
     {
-        boost::filesystem::path p = get(section, Keys::kPath);
-        p /= dbPrefix_;
-        p += ".%%%%";
-        newPath = boost::filesystem::unique_path(p);
+        newPath = beast::uniqueRandomPath(get(section, Keys::kPath), 100, dbPrefix_ + ".");
     }
     section.set(Keys::kPath, newPath.string());
 

src/xrpld/app/misc/ValidatorList.h

@@ -17,6 +17,7 @@
 #include <atomic>
 #include <cstddef>
 #include <cstdint>
+#include <filesystem>
 #include <functional>
 #include <map>
 #include <memory>
@@ -238,7 +239,7 @@ class ValidatorList
     ManifestCache& validatorManifests_;
     ManifestCache& publisherManifests_;
     TimeKeeper& timeKeeper_;
-    boost::filesystem::path const dataPath_;
+    std::filesystem::path const dataPath_;
     beast::Journal const j_;
     std::shared_mutex mutable mutex_;
     using scoped_lock = std::scoped_lock<decltype(mutex_)>;
@@ -866,7 +867,7 @@ private:
     /**
      * Get the filename used for caching UNLs
      */
-    boost::filesystem::path
+    std::filesystem::path
     getCacheFileName(scoped_lock const&, PublicKey const& pubKey) const;
 
     /**

src/xrpld/app/misc/detail/ValidatorList.cpp

@@ -29,12 +29,8 @@
 #include <xrpl/server/Manifest.h>
 #include <xrpl/server/NetworkOPs.h>
 
-#include <boost/filesystem/operations.hpp>
 #include <boost/regex/v5/regex.hpp>
 #include <boost/regex/v5/regex_match.hpp>
-#include <boost/system/detail/errc.hpp>
-#include <boost/system/detail/error_code.hpp>
-#include <boost/system/errc.hpp>
 
 #include <xrpl.pb.h>
 
@@ -43,6 +39,7 @@
 #include <cmath>
 #include <cstddef>
 #include <cstdint>
+#include <filesystem>
 #include <functional>
 #include <iterator>
 #include <limits>
@@ -54,6 +51,7 @@
 #include <shared_mutex>
 #include <string>
 #include <string_view>
+#include <system_error>
 #include <utility>
 #include <vector>
 
@@ -288,7 +286,7 @@ ValidatorList::load(
     return true;
 }
 
-boost::filesystem::path
+std::filesystem::path
 ValidatorList::getCacheFileName(ValidatorList::scoped_lock const&, PublicKey const& pubKey) const
 {
     return dataPath_ / (kFilePrefix + strHex(pubKey));
@@ -372,9 +370,9 @@ ValidatorList::cacheValidatorFile(ValidatorList::scoped_lock const& lock, Public
     if (dataPath_.empty())
         return;
 
-    boost::filesystem::path const filename = getCacheFileName(lock, pubKey);
+    std::filesystem::path const filename = getCacheFileName(lock, pubKey);
 
-    boost::system::error_code ec;
+    std::error_code ec;
 
     json::Value value = buildFileData(strHex(pubKey), publisherLists_.at(pubKey), j_);
     // xrpld should be the only process writing to this file, so
@@ -1283,8 +1281,7 @@ std::vector<std::string>
 ValidatorList::loadLists()
 {
     using namespace std::string_literals;
-    using namespace boost::filesystem;
-    using namespace boost::system::errc;
+    using namespace std::filesystem;
 
     std::scoped_lock const lock{mutex_};
 
@@ -1292,12 +1289,12 @@ ValidatorList::loadLists()
     sites.reserve(publisherLists_.size());
     for (auto const& [pubKey, publisherCollection] : publisherLists_)
     {
-        boost::system::error_code ec;
+        std::error_code ec;
 
         if (publisherCollection.status == PublisherStatus::Available)
             continue;
 
-        boost::filesystem::path const filename = getCacheFileName(lock, pubKey);
+        std::filesystem::path const filename = getCacheFileName(lock, pubKey);
 
         auto const fullPath{canonical(filename, ec)};
         if (ec)
@@ -1308,7 +1305,7 @@ ValidatorList::loadLists()
         {
             // Treat an empty file as a missing file, because
             // nobody else is going to write it.
-            ec = make_error_code(no_such_file_or_directory);
+            ec = make_error_code(std::errc::no_such_file_or_directory);
         }
         if (ec)
             continue;

src/xrpld/app/rdb/backend/detail/Node.cpp

@@ -38,7 +38,6 @@
 #include <xrpl/rdb/RelationalDatabase.h>
 #include <xrpl/rdb/SociDB.h>
 
-#include <boost/filesystem/operations.hpp>
 #include <boost/format/free_funcs.hpp>
 #include <boost/optional/optional.hpp>  // IWYU pragma: keep
 #include <boost/system/detail/error_code.hpp>
@@ -56,6 +55,7 @@
 #include <cstddef>
 #include <cstdint>
 #include <exception>
+#include <filesystem>
 #include <functional>
 #include <limits>
 #include <map>
@@ -64,6 +64,7 @@
 #include <sstream>
 #include <stdexcept>
 #include <string>
+#include <system_error>
 #include <utility>
 #include <variant>
 #include <vector>
@@ -1293,8 +1294,8 @@ getTransaction(
 bool
 dbHasSpace(soci::session& session, Config const& config, beast::Journal j)
 {
-    boost::filesystem::space_info const space =
-        boost::filesystem::space(config.legacy(Sections::kDatabasePath));
+    std::filesystem::space_info const space =
+        std::filesystem::space(config.legacy(Sections::kDatabasePath));
 
     if (space.available < megabytes(512))
     {
@@ -1305,9 +1306,9 @@ dbHasSpace(soci::session& session, Config const& config, beast::Journal j)
     if (config.useTxTables())
     {
         DatabaseCon::Setup const dbSetup = setupDatabaseCon(config);
-        boost::filesystem::path const dbPath = dbSetup.dataDir / kTxDbName;
-        boost::system::error_code ec;
-        std::optional<std::uint64_t> dbSize = boost::filesystem::file_size(dbPath, ec);
+        std::filesystem::path const dbPath = dbSetup.dataDir / kTxDbName;
+        std::error_code ec;
+        std::optional<std::uint64_t> dbSize = std::filesystem::file_size(dbPath, ec);
         if (ec)
         {
             JLOG(j.error()) << "Error checking transaction db file size: " << ec.message();

src/xrpld/core/Config.h

@@ -11,11 +11,10 @@
 #include <xrpl/protocol/XRPAmount.h>
 #include <xrpl/rdb/DatabaseCon.h>
 
-#include <boost/filesystem.hpp>  // VFALCO FIX: This include should not be here
-
 #include <chrono>
 #include <cstddef>
 #include <cstdint>
+#include <filesystem>
 #include <optional>
 #include <string>
 #include <unordered_set>
@@ -97,17 +96,17 @@ public:
     /**
      * Returns the full path and filename of the debug log file.
      */
-    [[nodiscard]] boost::filesystem::path
+    [[nodiscard]] std::filesystem::path
     getDebugLogFile() const;
 
 private:
-    boost::filesystem::path configFile_;
+    std::filesystem::path configFile_;
 
 public:
-    boost::filesystem::path configDir;
+    std::filesystem::path configDir;
 
 private:
-    boost::filesystem::path debugLogfile_;
+    std::filesystem::path debugLogfile_;
 
     void
     load();

src/xrpld/core/detail/Config.cpp

@@ -21,21 +21,19 @@
 #include <boost/algorithm/string/replace.hpp>
 #include <boost/algorithm/string/split.hpp>
 #include <boost/algorithm/string/trim.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/path.hpp>
 #include <boost/format/free_funcs.hpp>
 #include <boost/multiprecision/detail/endian.hpp>
 #include <boost/predef.h>
 #include <boost/regex.hpp>  // IWYU pragma: keep
 #include <boost/regex/v5/regex.hpp>
 #include <boost/regex/v5/regex_match.hpp>
-#include <boost/system/detail/error_code.hpp>
 
 #include <algorithm>
 #include <array>
 #include <chrono>
 #include <cstdint>
 #include <cstdlib>
+#include <filesystem>
 #include <iostream>
 #include <iterator>
 #include <limits>
@@ -45,6 +43,7 @@
 #include <sstream>
 #include <stdexcept>
 #include <string>
+#include <system_error>
 #include <thread>
 #include <type_traits>
 #include <utility>
@@ -313,13 +312,13 @@ Config::setup(std::string const& strConf, bool bQuiet, bool bSilent, bool bStand
     // directory, use the current working directory as the
     // config directory and that with "db" as the data
     // directory.
-    boost::filesystem::path dataDir;
+    std::filesystem::path dataDir;
 
     if (!strConf.empty())
     {
         // --conf=<path> : everything is relative that file.
         configFile_ = strConf;
-        configDir = boost::filesystem::absolute(configFile_);
+        configDir = std::filesystem::absolute(configFile_);
         configDir.remove_filename();
         dataDir = configDir / kDatabaseDirName;
     }
@@ -330,13 +329,13 @@ Config::setup(std::string const& strConf, bool bQuiet, bool bSilent, bool bStand
             // Check if either of the config files exist in the current working
             // directory, in which case the databases will be stored in a
             // subdirectory.
-            configDir = boost::filesystem::current_path();
+            configDir = std::filesystem::current_path();
             dataDir = configDir / kDatabaseDirName;
             configFile_ = configDir / kConfigFileName;
-            if (boost::filesystem::exists(configFile_))
+            if (std::filesystem::exists(configFile_))
                 break;
             configFile_ = configDir / kConfigLegacyName;
-            if (boost::filesystem::exists(configFile_))
+            if (std::filesystem::exists(configFile_))
                 break;
 
             // Check if the home directory is set, and optionally the XDG config
@@ -363,10 +362,10 @@ Config::setup(std::string const& strConf, bool bQuiet, bool bSilent, bool bStand
                 dataDir = strXdgDataHome + "/" + systemName();
                 configDir = strXdgConfigHome + "/" + systemName();
                 configFile_ = configDir / kConfigFileName;
-                if (boost::filesystem::exists(configFile_))
+                if (std::filesystem::exists(configFile_))
                     break;
                 configFile_ = configDir / kConfigLegacyName;
-                if (boost::filesystem::exists(configFile_))
+                if (std::filesystem::exists(configFile_))
                     break;
             }
 
@@ -374,7 +373,7 @@ Config::setup(std::string const& strConf, bool bQuiet, bool bSilent, bool bStand
             dataDir = "/var/lib/" + systemName();
             configDir = "/etc/" + systemName();
             configFile_ = configDir / kConfigFileName;
-            if (boost::filesystem::exists(configFile_))
+            if (std::filesystem::exists(configFile_))
                 break;
             configFile_ = configDir / kConfigLegacyName;
         } while (false);
@@ -387,7 +386,7 @@ Config::setup(std::string const& strConf, bool bQuiet, bool bSilent, bool bStand
         std::string const dbPath(legacy(Sections::kDatabasePath));
         if (!dbPath.empty())
         {
-            dataDir = boost::filesystem::path(dbPath);
+            dataDir = std::filesystem::path(dbPath);
         }
         else if (runStandalone_)
         {
@@ -397,13 +396,13 @@ Config::setup(std::string const& strConf, bool bQuiet, bool bSilent, bool bStand
 
     if (!dataDir.empty())
     {
-        boost::system::error_code ec;
-        boost::filesystem::create_directories(dataDir, ec);
+        std::error_code ec;
+        std::filesystem::create_directories(dataDir, ec);
 
         if (ec)
             Throw<std::runtime_error>(boost::str(boost::format("Can not create %s") % dataDir));
 
-        legacy(Sections::kDatabasePath, boost::filesystem::absolute(dataDir).string());
+        legacy(Sections::kDatabasePath, std::filesystem::absolute(dataDir).string());
     }
 
     HTTPClient::initializeSSLContext(this->sslVerifyDir, this->sslVerifyFile, this->sslVerify, j_);
@@ -455,7 +454,7 @@ Config::load()
     if (!quiet_)
         std::cerr << "Loading: " << configFile_ << "\n";
 
-    boost::system::error_code ec;
+    std::error_code ec;
     auto const fileContents = getFileContents(ec, configFile_);
 
     if (ec)
@@ -508,8 +507,8 @@ Config::loadFromString(std::string const& fileContents)
         std::string dbPath;
         if (getSingleSection(secConfig, Sections::kDatabasePath, dbPath, j_))
         {
-            boost::filesystem::path const p(dbPath);
-            legacy(Sections::kDatabasePath, boost::filesystem::absolute(p).string());
+            std::filesystem::path const p(dbPath);
+            legacy(Sections::kDatabasePath, std::filesystem::absolute(p).string());
         }
     }
 
@@ -976,7 +975,7 @@ Config::loadFromString(std::string const& fileContents)
         // If no path was specified, then look for validators.txt
         // in the same directory as the config file, but don't complain
         // if we can't find it.
-        boost::filesystem::path validatorsFile;
+        std::filesystem::path validatorsFile;
 
         if (getSingleSection(secConfig, Sections::kValidatorsFile, strTemp, j_))
         {
@@ -991,7 +990,7 @@ Config::loadFromString(std::string const& fileContents)
             if (!validatorsFile.is_absolute() && !configDir.empty())
                 validatorsFile = configDir / validatorsFile;
 
-            if (!boost::filesystem::exists(validatorsFile))
+            if (!std::filesystem::exists(validatorsFile))
             {
                 Throw<std::runtime_error>(
                     std::string("The file specified in [") + Sections::kValidatorsFile +
@@ -1000,8 +999,8 @@ Config::loadFromString(std::string const& fileContents)
                     validatorsFile.string());
             }
             else if (
-                !boost::filesystem::is_regular_file(validatorsFile) &&
-                !boost::filesystem::is_symlink(validatorsFile))
+                !std::filesystem::is_regular_file(validatorsFile) &&
+                !std::filesystem::is_symlink(validatorsFile))
             {
                 Throw<std::runtime_error>(
                     std::string("Invalid file specified in [") + Sections::kValidatorsFile +
@@ -1014,20 +1013,20 @@ Config::loadFromString(std::string const& fileContents)
 
             if (!validatorsFile.empty())
             {
-                if (!boost::filesystem::exists(validatorsFile) ||
-                    (!boost::filesystem::is_regular_file(validatorsFile) &&
-                     !boost::filesystem::is_symlink(validatorsFile)))
+                if (!std::filesystem::exists(validatorsFile) ||
+                    (!std::filesystem::is_regular_file(validatorsFile) &&
+                     !std::filesystem::is_symlink(validatorsFile)))
                 {
                     validatorsFile.clear();
                 }
             }
         }
 
-        if (!validatorsFile.empty() && boost::filesystem::exists(validatorsFile) &&
-            (boost::filesystem::is_regular_file(validatorsFile) ||
-             boost::filesystem::is_symlink(validatorsFile)))
+        if (!validatorsFile.empty() && std::filesystem::exists(validatorsFile) &&
+            (std::filesystem::is_regular_file(validatorsFile) ||
+             std::filesystem::is_symlink(validatorsFile)))
         {
-            boost::system::error_code ec;
+            std::error_code ec;
             auto const data = getFileContents(ec, validatorsFile);
             if (ec)
             {
@@ -1160,7 +1159,7 @@ Config::loadFromString(std::string const& fileContents)
     }
 }
 
-boost::filesystem::path
+std::filesystem::path
 Config::getDebugLogFile() const
 {
     auto logFile = debugLogfile_;
@@ -1169,17 +1168,17 @@ Config::getDebugLogFile() const
     {
         // Unless an absolute path for the log file is specified, the
         // path is relative to the config file directory.
-        logFile = boost::filesystem::absolute(logFile, configDir);
+        logFile = std::filesystem::absolute(configDir / logFile);
     }
 
     if (!logFile.empty())
     {
         auto logDir = logFile.parent_path();
 
-        if (!boost::filesystem::is_directory(logDir))
+        if (!std::filesystem::is_directory(logDir))
         {
-            boost::system::error_code ec;
-            boost::filesystem::create_directories(logDir, ec);
+            std::error_code ec;
+            std::filesystem::create_directories(logDir, ec);
 
             // If we fail, we warn but continue so that the calling code can
             // decide how to handle this situation.

src/xrpld/perflog/detail/PerfLogImp.cpp

@@ -17,11 +17,9 @@
 #include <xrpl/nodestore/Database.h>
 #include <xrpl/protocol/jss.h>
 
-#include <boost/filesystem/operations.hpp>
-#include <boost/system/detail/error_code.hpp>
-
 #include <chrono>
 #include <cstdint>
+#include <filesystem>
 #include <functional>
 #include <ios>
 #include <memory>
@@ -29,6 +27,7 @@
 #include <ostream>
 #include <set>
 #include <string>
+#include <system_error>
 #include <unordered_map>
 #include <utility>
 #include <vector>
@@ -220,10 +219,10 @@ PerfLogImp::openLog()
         logFile_.close();
 
     auto logDir = setup_.perfLog.parent_path();
-    if (!boost::filesystem::is_directory(logDir))
+    if (!std::filesystem::is_directory(logDir))
     {
-        boost::system::error_code ec;
-        boost::filesystem::create_directories(logDir, ec);
+        std::error_code ec;
+        std::filesystem::create_directories(logDir, ec);
         if (ec)
         {
             JLOG(j_.fatal()) << "Unable to create performance log "
@@ -478,17 +477,17 @@ PerfLogImp::stop()
 //-----------------------------------------------------------------------------
 
 PerfLog::Setup
-setupPerfLog(Section const& section, boost::filesystem::path const& configDir)
+setupPerfLog(Section const& section, std::filesystem::path const& configDir)
 {
     PerfLog::Setup setup;
     std::string perfLog;
     set(perfLog, "perf_log", section);
     if (!perfLog.empty())
     {
-        setup.perfLog = boost::filesystem::path(perfLog);
+        setup.perfLog = std::filesystem::path(perfLog);
         if (setup.perfLog.is_relative())
         {
-            setup.perfLog = boost::filesystem::absolute(setup.perfLog, configDir);
+            setup.perfLog = std::filesystem::absolute(configDir / setup.perfLog);
         }
     }