Library import 5, delete go dependencies (#832)

* Library import 5, delete go dependencies

* Fix yt client

1 files changed, 0 insertions, 4614 deletions

diff --git a/contrib/restricted/boost/filesystem/src/operations.cpp b/contrib/restricted/boost/filesystem/src/operations.cpp
deleted file mode 100644
index c7808d59419..00000000000
--- a/contrib/restricted/boost/filesystem/src/operations.cpp
+++ /dev/null
@@ -1,4614 +0,0 @@
-//  operations.cpp  --------------------------------------------------------------------//
-
-//  Copyright 2002-2009, 2014 Beman Dawes
-//  Copyright 2001 Dietmar Kuehl
-//  Copyright 2018-2022 Andrey Semashev
-
-//  Distributed under the Boost Software License, Version 1.0.
-//  See http://www.boost.org/LICENSE_1_0.txt
-
-//  See library home page at http://www.boost.org/libs/filesystem
-
-//--------------------------------------------------------------------------------------//
-
-#include "platform_config.hpp"
-
-#include <boost/predef/os/bsd/open.h>
-#include <boost/filesystem/config.hpp>
-#include <boost/filesystem/operations.hpp>
-#include <boost/filesystem/file_status.hpp>
-#include <boost/filesystem/exception.hpp>
-#include <boost/filesystem/directory.hpp>
-#include <boost/system/error_code.hpp>
-#include <boost/smart_ptr/scoped_ptr.hpp>
-#include <boost/smart_ptr/scoped_array.hpp>
-#include <boost/detail/workaround.hpp>
-#include <boost/core/bit.hpp>
-#include <boost/cstdint.hpp>
-#include <boost/assert.hpp>
-#include <new> // std::bad_alloc, std::nothrow
-#include <limits>
-#include <string>
-#include <cstddef>
-#include <cstdlib> // for malloc, free
-#include <cstring>
-#include <cerrno>
-#include <stdio.h> // for rename
-
-// Default to POSIX under Emscripten
-// If BOOST_FILESYSTEM_EMSCRIPTEN_USE_WASI is set, use WASI instead
-#if defined(__wasm) && (!defined(__EMSCRIPTEN__) || defined(BOOST_FILESYSTEM_EMSCRIPTEN_USE_WASI))
-#define BOOST_FILESYSTEM_USE_WASI
-#endif
-
-#ifdef BOOST_POSIX_API
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#if defined(BOOST_FILESYSTEM_USE_WASI)
-// WASI does not have statfs or statvfs.
-#elif !defined(__APPLE__) && \
-    (!defined(__OpenBSD__) || BOOST_OS_BSD_OPEN >= BOOST_VERSION_NUMBER(4, 4, 0)) && \
-    !defined(__ANDROID__) && \
-    !defined(__VXWORKS__)
-#include <sys/statvfs.h>
-#define BOOST_STATVFS statvfs
-#define BOOST_STATVFS_F_FRSIZE vfs.f_frsize
-#else
-#ifdef __OpenBSD__
-#include <sys/param.h>
-#elif defined(__ANDROID__)
-#include <sys/vfs.h>
-#endif
-#if !defined(__VXWORKS__)
-#include <sys/mount.h>
-#endif
-#define BOOST_STATVFS statfs
-#define BOOST_STATVFS_F_FRSIZE static_cast< uintmax_t >(vfs.f_bsize)
-#endif // BOOST_STATVFS definition
-
-#include <unistd.h>
-#include <fcntl.h>
-#if !defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-#include <utime.h>
-#endif
-#include <limits.h>
-
-#if defined(linux) || defined(__linux) || defined(__linux__)
-
-#include <sys/vfs.h>
-#include <sys/utsname.h>
-#include <sys/syscall.h>
-#include <sys/sysmacros.h>
-#if !defined(BOOST_FILESYSTEM_DISABLE_SENDFILE)
-#include <sys/sendfile.h>
-#define BOOST_FILESYSTEM_USE_SENDFILE
-#endif // !defined(BOOST_FILESYSTEM_DISABLE_SENDFILE)
-#if !defined(BOOST_FILESYSTEM_DISABLE_COPY_FILE_RANGE) && defined(__NR_copy_file_range)
-#define BOOST_FILESYSTEM_USE_COPY_FILE_RANGE
-#endif // !defined(BOOST_FILESYSTEM_DISABLE_COPY_FILE_RANGE) && defined(__NR_copy_file_range)
-#if !defined(BOOST_FILESYSTEM_DISABLE_STATX) && (defined(BOOST_FILESYSTEM_HAS_STATX) || defined(BOOST_FILESYSTEM_HAS_STATX_SYSCALL))
-#if !defined(BOOST_FILESYSTEM_HAS_STATX) && defined(BOOST_FILESYSTEM_HAS_STATX_SYSCALL)
-#include <linux/stat.h>
-#endif
-#define BOOST_FILESYSTEM_USE_STATX
-#endif // !defined(BOOST_FILESYSTEM_DISABLE_STATX) && (defined(BOOST_FILESYSTEM_HAS_STATX) || defined(BOOST_FILESYSTEM_HAS_STATX_SYSCALL))
-
-#if defined(__has_include)
-#if __has_include(<linux/magic.h>)
-// This header was introduced in Linux kernel 2.6.19
-#include <linux/magic.h>
-#endif
-#endif
-
-// Some filesystem type magic constants are not defined in older kernel headers
-#ifndef PROC_SUPER_MAGIC
-#define PROC_SUPER_MAGIC 0x9fa0
-#endif
-#ifndef SYSFS_MAGIC
-#define SYSFS_MAGIC 0x62656572
-#endif
-#ifndef TRACEFS_MAGIC
-#define TRACEFS_MAGIC 0x74726163
-#endif
-#ifndef DEBUGFS_MAGIC
-#define DEBUGFS_MAGIC 0x64626720
-#endif
-
-#endif // defined(linux) || defined(__linux) || defined(__linux__)
-
-#if defined(POSIX_FADV_SEQUENTIAL) && (!defined(__ANDROID__) || __ANDROID_API__ >= 21)
-#define BOOST_FILESYSTEM_HAS_POSIX_FADVISE
-#endif
-
-#if defined(BOOST_FILESYSTEM_HAS_STAT_ST_MTIM)
-#define BOOST_FILESYSTEM_STAT_ST_MTIMENSEC st_mtim.tv_nsec
-#elif defined(BOOST_FILESYSTEM_HAS_STAT_ST_MTIMESPEC)
-#define BOOST_FILESYSTEM_STAT_ST_MTIMENSEC st_mtimespec.tv_nsec
-#elif defined(BOOST_FILESYSTEM_HAS_STAT_ST_MTIMENSEC)
-#define BOOST_FILESYSTEM_STAT_ST_MTIMENSEC st_mtimensec
-#endif
-
-#if defined(BOOST_FILESYSTEM_HAS_STAT_ST_BIRTHTIM)
-#define BOOST_FILESYSTEM_STAT_ST_BIRTHTIME st_birthtim.tv_sec
-#define BOOST_FILESYSTEM_STAT_ST_BIRTHTIMENSEC st_birthtim.tv_nsec
-#elif defined(BOOST_FILESYSTEM_HAS_STAT_ST_BIRTHTIMESPEC)
-#define BOOST_FILESYSTEM_STAT_ST_BIRTHTIME st_birthtimespec.tv_sec
-#define BOOST_FILESYSTEM_STAT_ST_BIRTHTIMENSEC st_birthtimespec.tv_nsec
-#elif defined(BOOST_FILESYSTEM_HAS_STAT_ST_BIRTHTIMENSEC)
-#define BOOST_FILESYSTEM_STAT_ST_BIRTHTIME st_birthtime
-#define BOOST_FILESYSTEM_STAT_ST_BIRTHTIMENSEC st_birthtimensec
-#endif
-
-#include "posix_tools.hpp"
-
-#else // BOOST_WINDOWS_API
-
-#include <boost/winapi/dll.hpp> // get_proc_address, GetModuleHandleW
-#include <cwchar>
-#include <io.h>
-#include <windows.h>
-#include <winnt.h>
-#if defined(__BORLANDC__) || defined(__MWERKS__)
-#if defined(BOOST_BORLANDC)
-using std::time_t;
-#endif
-#include <utime.h>
-#else
-#include <sys/utime.h>
-#endif
-
-#include "windows_tools.hpp"
-
-#endif // BOOST_WINDOWS_API
-
-#include "atomic_tools.hpp"
-#include "error_handling.hpp"
-#include "private_config.hpp"
-
-#include <boost/filesystem/detail/header.hpp> // must be the last #include
-
-namespace fs = boost::filesystem;
-using boost::filesystem::path;
-using boost::filesystem::filesystem_error;
-using boost::filesystem::perms;
-using boost::system::error_code;
-using boost::system::system_category;
-
-#if defined(BOOST_POSIX_API)
-
-// At least Mac OS X 10.6 and older doesn't support O_CLOEXEC
-#ifndef O_CLOEXEC
-#define O_CLOEXEC 0
-#endif
-
-#if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
-#define BOOST_FILESYSTEM_HAS_FDATASYNC
-#endif
-
-#else // defined(BOOST_POSIX_API)
-
-#ifndef MAXIMUM_REPARSE_DATA_BUFFER_SIZE
-#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE (16 * 1024)
-#endif
-
-#ifndef FSCTL_GET_REPARSE_POINT
-#define FSCTL_GET_REPARSE_POINT 0x900a8
-#endif
-
-#ifndef SYMLINK_FLAG_RELATIVE
-#define SYMLINK_FLAG_RELATIVE 1
-#endif
-
-// Fallback for MinGW/Cygwin
-#ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
-#define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
-#endif
-
-#ifndef SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
-#define SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE 0x2
-#endif
-
-#endif // defined(BOOST_POSIX_API)
-
-//  POSIX/Windows macros  ----------------------------------------------------//
-
-//  Portions of the POSIX and Windows API's are very similar, except for name,
-//  order of arguments, and meaning of zero/non-zero returns. The macros below
-//  abstract away those differences. They follow Windows naming and order of
-//  arguments, and return true to indicate no error occurred. [POSIX naming,
-//  order of arguments, and meaning of return were followed initially, but
-//  found to be less clear and cause more coding errors.]
-
-#if defined(BOOST_POSIX_API)
-
-#define BOOST_SET_CURRENT_DIRECTORY(P) (::chdir(P) == 0)
-#define BOOST_MOVE_FILE(OLD, NEW) (::rename(OLD, NEW) == 0)
-#define BOOST_RESIZE_FILE(P, SZ) (::truncate(P, SZ) == 0)
-
-#else // BOOST_WINDOWS_API
-
-#define BOOST_SET_CURRENT_DIRECTORY(P) (::SetCurrentDirectoryW(P) != 0)
-#define BOOST_MOVE_FILE(OLD, NEW) (::MoveFileExW(OLD, NEW, MOVEFILE_REPLACE_EXISTING | MOVEFILE_COPY_ALLOWED) != 0)
-#define BOOST_RESIZE_FILE(P, SZ) (resize_file_impl(P, SZ) != 0)
-
-#endif
-
-namespace boost {
-namespace filesystem {
-namespace detail {
-
-#if defined(linux) || defined(__linux) || defined(__linux__)
-//! Initializes fill_random implementation pointer. Implemented in unique_path.cpp.
-void init_fill_random_impl(unsigned int major_ver, unsigned int minor_ver, unsigned int patch_ver);
-#endif // defined(linux) || defined(__linux) || defined(__linux__)
-
-#if defined(BOOST_WINDOWS_API) && !defined(UNDER_CE)
-//! Initializes directory iterator implementation. Implemented in directory.cpp.
-void init_directory_iterator_impl() BOOST_NOEXCEPT;
-#endif // defined(BOOST_WINDOWS_API) && !defined(UNDER_CE)
-
-//--------------------------------------------------------------------------------------//
-//                                                                                      //
-//                        helpers (all operating systems)                               //
-//                                                                                      //
-//--------------------------------------------------------------------------------------//
-
-namespace {
-
-// The number of retries remove_all should make if it detects that the directory it is about to enter has been replaced with a symlink or a regular file
-BOOST_CONSTEXPR_OR_CONST unsigned int remove_all_directory_replaced_retry_count = 5u;
-
-#if defined(BOOST_POSIX_API)
-
-// Size of a small buffer for a path that can be placed on stack, in character code units
-BOOST_CONSTEXPR_OR_CONST std::size_t small_path_size = 1024u;
-
-// Absolute maximum path length, in character code units, that we're willing to accept from various system calls.
-// This value is arbitrary, it is supposed to be a hard limit to avoid memory exhaustion
-// in some of the algorithms below in case of some corrupted or maliciously broken filesystem.
-// A few examples of path size limits:
-// - Windows: 32767 UTF-16 code units or 260 bytes for legacy multibyte APIs.
-// - Linux: 4096 bytes
-// - IRIX, HP-UX, Mac OS, QNX, FreeBSD, OpenBSD: 1024 bytes
-// - GNU/Hurd: no hard limit
-BOOST_CONSTEXPR_OR_CONST std::size_t absolute_path_max = 32u * 1024u;
-
-#endif // defined(BOOST_POSIX_API)
-
-// Maximum number of resolved symlinks before we register a loop
-BOOST_CONSTEXPR_OR_CONST unsigned int symloop_max =
-#if defined(SYMLOOP_MAX)
-    SYMLOOP_MAX < 40 ? 40 : SYMLOOP_MAX
-#else
-    40
-#endif
-;
-
-//  general helpers  -----------------------------------------------------------------//
-
-bool is_empty_directory(path const& p, error_code* ec)
-{
-    fs::directory_iterator itr;
-    detail::directory_iterator_construct(itr, p, static_cast< unsigned int >(directory_options::none), NULL, ec);
-    return itr == fs::directory_iterator();
-}
-
-bool not_found_error(int errval) BOOST_NOEXCEPT; // forward declaration
-
-#ifdef BOOST_POSIX_API
-
-//--------------------------------------------------------------------------------------//
-//                                                                                      //
-//                            POSIX-specific helpers                                    //
-//                                                                                      //
-//--------------------------------------------------------------------------------------//
-
-struct fd_wrapper
-{
-    int fd;
-
-    fd_wrapper() BOOST_NOEXCEPT : fd(-1) {}
-    explicit fd_wrapper(int fd) BOOST_NOEXCEPT : fd(fd) {}
-    ~fd_wrapper() BOOST_NOEXCEPT
-    {
-        if (fd >= 0)
-            close_fd(fd);
-    }
-    BOOST_DELETED_FUNCTION(fd_wrapper(fd_wrapper const&))
-    BOOST_DELETED_FUNCTION(fd_wrapper& operator=(fd_wrapper const&))
-};
-
-inline bool not_found_error(int errval) BOOST_NOEXCEPT
-{
-    return errval == ENOENT || errval == ENOTDIR;
-}
-
-#if defined(BOOST_FILESYSTEM_HAS_STATX)
-
-//! A wrapper for statx libc function. Disable MSAN since at least on clang 10 it doesn't
-//! know which fields of struct statx are initialized by the syscall and misdetects errors.
-BOOST_FILESYSTEM_NO_SANITIZE_MEMORY
-BOOST_FORCEINLINE int invoke_statx(int dirfd, const char* path, int flags, unsigned int mask, struct ::statx* stx)
-{
-    return ::statx(dirfd, path, flags, mask, stx);
-}
-
-#elif defined(BOOST_FILESYSTEM_HAS_STATX_SYSCALL)
-
-//! statx emulation through fstatat
-int statx_fstatat(int dirfd, const char* path, int flags, unsigned int mask, struct ::statx* stx)
-{
-    struct ::stat st;
-    flags &= AT_EMPTY_PATH | AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW;
-    int res = ::fstatat(dirfd, path, &st, flags);
-    if (BOOST_LIKELY(res == 0))
-    {
-        std::memset(stx, 0, sizeof(*stx));
-        stx->stx_mask = STATX_BASIC_STATS;
-        stx->stx_blksize = st.st_blksize;
-        stx->stx_nlink = st.st_nlink;
-        stx->stx_uid = st.st_uid;
-        stx->stx_gid = st.st_gid;
-        stx->stx_mode = st.st_mode;
-        stx->stx_ino = st.st_ino;
-        stx->stx_size = st.st_size;
-        stx->stx_blocks = st.st_blocks;
-        stx->stx_atime.tv_sec = st.st_atim.tv_sec;
-        stx->stx_atime.tv_nsec = st.st_atim.tv_nsec;
-        stx->stx_ctime.tv_sec = st.st_ctim.tv_sec;
-        stx->stx_ctime.tv_nsec = st.st_ctim.tv_nsec;
-        stx->stx_mtime.tv_sec = st.st_mtim.tv_sec;
-        stx->stx_mtime.tv_nsec = st.st_mtim.tv_nsec;
-        stx->stx_rdev_major = major(st.st_rdev);
-        stx->stx_rdev_minor = minor(st.st_rdev);
-        stx->stx_dev_major = major(st.st_dev);
-        stx->stx_dev_minor = minor(st.st_dev);
-    }
-
-    return res;
-}
-
-typedef int statx_t(int dirfd, const char* path, int flags, unsigned int mask, struct ::statx* stx);
-
-//! Pointer to the actual implementation of the statx implementation
-statx_t* statx_ptr = &statx_fstatat;
-
-inline int invoke_statx(int dirfd, const char* path, int flags, unsigned int mask, struct ::statx* stx) BOOST_NOEXCEPT
-{
-    return filesystem::detail::atomic_load_relaxed(statx_ptr)(dirfd, path, flags, mask, stx);
-}
-
-//! A wrapper for the statx syscall. Disable MSAN since at least on clang 10 it doesn't
-//! know which fields of struct statx are initialized by the syscall and misdetects errors.
-BOOST_FILESYSTEM_NO_SANITIZE_MEMORY
-int statx_syscall(int dirfd, const char* path, int flags, unsigned int mask, struct ::statx* stx)
-{
-    int res = ::syscall(__NR_statx, dirfd, path, flags, mask, stx);
-    if (res < 0)
-    {
-        const int err = errno;
-        if (BOOST_UNLIKELY(err == ENOSYS))
-        {
-            filesystem::detail::atomic_store_relaxed(statx_ptr, &statx_fstatat);
-            return statx_fstatat(dirfd, path, flags, mask, stx);
-        }
-    }
-
-    return res;
-}
-
-#endif // defined(BOOST_FILESYSTEM_HAS_STATX)
-
-#if defined(linux) || defined(__linux) || defined(__linux__)
-
-//! Initializes statx implementation pointer
-inline void init_statx_impl(unsigned int major_ver, unsigned int minor_ver, unsigned int patch_ver)
-{
-#if !defined(BOOST_FILESYSTEM_HAS_STATX) && defined(BOOST_FILESYSTEM_HAS_STATX_SYSCALL)
-    statx_t* stx = &statx_fstatat;
-    if (major_ver > 4u || (major_ver == 4u && minor_ver >= 11u))
-        stx = &statx_syscall;
-
-    filesystem::detail::atomic_store_relaxed(statx_ptr, stx);
-#endif // !defined(BOOST_FILESYSTEM_HAS_STATX) && defined(BOOST_FILESYSTEM_HAS_STATX_SYSCALL)
-}
-
-#endif // defined(linux) || defined(__linux) || defined(__linux__)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-
-//! Returns \c true if the two \c statx structures refer to the same file
-inline bool equivalent_stat(struct ::statx const& s1, struct ::statx const& s2) BOOST_NOEXCEPT
-{
-    return s1.stx_dev_major == s2.stx_dev_major && s1.stx_dev_minor == s2.stx_dev_minor && s1.stx_ino == s2.stx_ino;
-}
-
-//! Returns file type/access mode from \c statx structure
-inline mode_t get_mode(struct ::statx const& st) BOOST_NOEXCEPT
-{
-    return st.stx_mode;
-}
-
-//! Returns file size from \c statx structure
-inline uintmax_t get_size(struct ::statx const& st) BOOST_NOEXCEPT
-{
-    return st.stx_size;
-}
-
-//! Returns optimal block size from \c statx structure
-inline std::size_t get_blksize(struct ::statx const& st) BOOST_NOEXCEPT
-{
-    return st.stx_blksize;
-}
-
-#else // defined(BOOST_FILESYSTEM_USE_STATX)
-
-//! Returns \c true if the two \c stat structures refer to the same file
-inline bool equivalent_stat(struct ::stat const& s1, struct ::stat const& s2) BOOST_NOEXCEPT
-{
-    // According to the POSIX stat specs, "The st_ino and st_dev fields
-    // taken together uniquely identify the file within the system."
-    return s1.st_dev == s2.st_dev && s1.st_ino == s2.st_ino;
-}
-
-//! Returns file type/access mode from \c stat structure
-inline mode_t get_mode(struct ::stat const& st) BOOST_NOEXCEPT
-{
-    return st.st_mode;
-}
-
-//! Returns file size from \c stat structure
-inline uintmax_t get_size(struct ::stat const& st) BOOST_NOEXCEPT
-{
-    return st.st_size;
-}
-
-//! Returns optimal block size from \c stat structure
-inline std::size_t get_blksize(struct ::stat const& st) BOOST_NOEXCEPT
-{
-#if defined(BOOST_FILESYSTEM_HAS_STAT_ST_BLKSIZE)
-    return st.st_blksize;
-#else
-    return 4096u; // a suitable default used on most modern SSDs/HDDs
-#endif
-}
-
-#endif // defined(BOOST_FILESYSTEM_USE_STATX)
-
-//! status() implementation
-file_status status_impl
-(
-    path const& p,
-    error_code* ec
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS) || defined(BOOST_FILESYSTEM_USE_STATX)
-    , int basedir_fd = AT_FDCWD
-#endif
-)
-{
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx path_stat;
-    int err = invoke_statx(basedir_fd, p.c_str(), AT_NO_AUTOMOUNT, STATX_TYPE | STATX_MODE, &path_stat);
-#elif defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-    struct ::stat path_stat;
-    int err = ::fstatat(basedir_fd, p.c_str(), &path_stat, AT_NO_AUTOMOUNT);
-#else
-    struct ::stat path_stat;
-    int err = ::stat(p.c_str(), &path_stat);
-#endif
-
-    if (err != 0)
-    {
-        err = errno;
-        if (ec)                                 // always report errno, even though some
-            ec->assign(err, system_category()); // errno values are not status_errors
-
-        if (not_found_error(err))
-            return fs::file_status(fs::file_not_found, fs::no_perms);
-
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::status", p, error_code(err, system_category())));
-
-        return fs::file_status(fs::status_error);
-    }
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    if (BOOST_UNLIKELY((path_stat.stx_mask & (STATX_TYPE | STATX_MODE)) != (STATX_TYPE | STATX_MODE)))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::status");
-        return fs::file_status(fs::status_error);
-    }
-#endif
-
-    const mode_t mode = get_mode(path_stat);
-    if (S_ISDIR(mode))
-        return fs::file_status(fs::directory_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISREG(mode))
-        return fs::file_status(fs::regular_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISBLK(mode))
-        return fs::file_status(fs::block_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISCHR(mode))
-        return fs::file_status(fs::character_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISFIFO(mode))
-        return fs::file_status(fs::fifo_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISSOCK(mode))
-        return fs::file_status(fs::socket_file, static_cast< perms >(mode) & fs::perms_mask);
-
-    return fs::file_status(fs::type_unknown);
-}
-
-//! symlink_status() implementation
-file_status symlink_status_impl
-(
-    path const& p,
-    error_code* ec
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS) || defined(BOOST_FILESYSTEM_USE_STATX)
-    , int basedir_fd = AT_FDCWD
-#endif
-)
-{
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx path_stat;
-    int err = invoke_statx(basedir_fd, p.c_str(), AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT, STATX_TYPE | STATX_MODE, &path_stat);
-#elif defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-    struct ::stat path_stat;
-    int err = ::fstatat(basedir_fd, p.c_str(), &path_stat, AT_SYMLINK_NOFOLLOW | AT_NO_AUTOMOUNT);
-#else
-    struct ::stat path_stat;
-    int err = ::lstat(p.c_str(), &path_stat);
-#endif
-
-    if (err != 0)
-    {
-        err = errno;
-        if (ec)                                 // always report errno, even though some
-            ec->assign(err, system_category()); // errno values are not status_errors
-
-        if (not_found_error(err)) // these are not errors
-            return fs::file_status(fs::file_not_found, fs::no_perms);
-
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::symlink_status", p, error_code(err, system_category())));
-
-        return fs::file_status(fs::status_error);
-    }
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    if (BOOST_UNLIKELY((path_stat.stx_mask & (STATX_TYPE | STATX_MODE)) != (STATX_TYPE | STATX_MODE)))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::symlink_status");
-        return fs::file_status(fs::status_error);
-    }
-#endif
-
-    const mode_t mode = get_mode(path_stat);
-    if (S_ISREG(mode))
-        return fs::file_status(fs::regular_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISDIR(mode))
-        return fs::file_status(fs::directory_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISLNK(mode))
-        return fs::file_status(fs::symlink_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISBLK(mode))
-        return fs::file_status(fs::block_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISCHR(mode))
-        return fs::file_status(fs::character_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISFIFO(mode))
-        return fs::file_status(fs::fifo_file, static_cast< perms >(mode) & fs::perms_mask);
-    if (S_ISSOCK(mode))
-        return fs::file_status(fs::socket_file, static_cast< perms >(mode) & fs::perms_mask);
-
-    return fs::file_status(fs::type_unknown);
-}
-
-//! Flushes buffered data and attributes written to the file to permanent storage
-inline int full_sync(int fd)
-{
-    while (true)
-    {
-#if defined(__APPLE__) && defined(__MACH__) && defined(F_FULLFSYNC)
-        // Mac OS does not flush data to physical storage with fsync()
-        int err = ::fcntl(fd, F_FULLFSYNC);
-#else
-        int err = ::fsync(fd);
-#endif
-        if (BOOST_UNLIKELY(err < 0))
-        {
-            err = errno;
-            // POSIX says fsync can return EINTR (https://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html).
-            // fcntl(F_FULLFSYNC) isn't documented to return EINTR, but it doesn't hurt to check.
-            if (err == EINTR)
-                continue;
-
-            return err;
-        }
-
-        break;
-    }
-
-    return 0;
-}
-
-//! Flushes buffered data written to the file to permanent storage
-inline int data_sync(int fd)
-{
-#if defined(BOOST_FILESYSTEM_HAS_FDATASYNC) && !(defined(__APPLE__) && defined(__MACH__) && defined(F_FULLFSYNC))
-    while (true)
-    {
-        int err = ::fdatasync(fd);
-        if (BOOST_UNLIKELY(err != 0))
-        {
-            err = errno;
-            // POSIX says fsync can return EINTR (https://pubs.opengroup.org/onlinepubs/9699919799/functions/fsync.html).
-            // It doesn't say so for fdatasync, but it is reasonable to expect it as well.
-            if (err == EINTR)
-                continue;
-
-            return err;
-        }
-
-        break;
-    }
-
-    return 0;
-#else
-    return full_sync(fd);
-#endif
-}
-
-// Min and max buffer sizes are selected to minimize the overhead from system calls.
-// The values are picked based on coreutils cp(1) benchmarking data described here:
-// https://github.com/coreutils/coreutils/blob/d1b0257077c0b0f0ee25087efd46270345d1dd1f/src/ioblksize.h#L23-L72
-BOOST_CONSTEXPR_OR_CONST uint_least32_t min_read_write_buf_size = 8u * 1024u;
-BOOST_CONSTEXPR_OR_CONST uint_least32_t max_read_write_buf_size = 256u * 1024u;
-
-//! copy_file read/write loop implementation
-int copy_file_data_read_write_impl(int infile, int outfile, char* buf, std::size_t buf_size)
-{
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_FADVISE)
-    ::posix_fadvise(infile, 0, 0, POSIX_FADV_SEQUENTIAL);
-#endif
-
-    // Don't use file size to limit the amount of data to copy since some filesystems, like procfs or sysfs,
-    // provide files with generated content and indicate that their size is zero or 4096. Just copy as much data
-    // as we can read from the input file.
-    while (true)
-    {
-        ssize_t sz_read = ::read(infile, buf, buf_size);
-        if (sz_read == 0)
-            break;
-        if (BOOST_UNLIKELY(sz_read < 0))
-        {
-            int err = errno;
-            if (err == EINTR)
-                continue;
-            return err;
-        }
-
-        // Allow for partial writes - see Advanced Unix Programming (2nd Ed.),
-        // Marc Rochkind, Addison-Wesley, 2004, page 94
-        for (ssize_t sz_wrote = 0; sz_wrote < sz_read;)
-        {
-            ssize_t sz = ::write(outfile, buf + sz_wrote, static_cast< std::size_t >(sz_read - sz_wrote));
-            if (BOOST_UNLIKELY(sz < 0))
-            {
-                int err = errno;
-                if (err == EINTR)
-                    continue;
-                return err;
-            }
-
-            sz_wrote += sz;
-        }
-    }
-
-    return 0;
-}
-
-//! copy_file implementation that uses read/write loop (fallback using a stack buffer)
-int copy_file_data_read_write_stack_buf(int infile, int outfile)
-{
-    char stack_buf[min_read_write_buf_size];
-    return copy_file_data_read_write_impl(infile, outfile, stack_buf, sizeof(stack_buf));
-}
-
-//! copy_file implementation that uses read/write loop
-int copy_file_data_read_write(int infile, int outfile, uintmax_t size, std::size_t blksize)
-{
-    {
-        uintmax_t buf_sz = size;
-        // Prefer the buffer to be larger than the file size so that we don't have
-        // to perform an extra read if the file fits in the buffer exactly.
-        buf_sz += (buf_sz < ~static_cast< uintmax_t >(0u));
-        if (buf_sz < blksize)
-            buf_sz = blksize;
-        if (buf_sz < min_read_write_buf_size)
-            buf_sz = min_read_write_buf_size;
-        if (buf_sz > max_read_write_buf_size)
-            buf_sz = max_read_write_buf_size;
-        const std::size_t buf_size = static_cast< std::size_t >(boost::core::bit_ceil(static_cast< uint_least32_t >(buf_sz)));
-        boost::scoped_array< char > buf(new (std::nothrow) char[buf_size]);
-        if (BOOST_LIKELY(!!buf.get()))
-            return copy_file_data_read_write_impl(infile, outfile, buf.get(), buf_size);
-    }
-
-    return copy_file_data_read_write_stack_buf(infile, outfile);
-}
-
-typedef int copy_file_data_t(int infile, int outfile, uintmax_t size, std::size_t blksize);
-
-//! Pointer to the actual implementation of the copy_file_data implementation
-copy_file_data_t* copy_file_data = &copy_file_data_read_write;
-
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE) || defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-
-//! copy_file_data wrapper that tests if a read/write loop must be used for a given filesystem
-template< typename CopyFileData >
-int check_fs_type(int infile, int outfile, uintmax_t size, std::size_t blksize);
-
-#endif // defined(BOOST_FILESYSTEM_USE_SENDFILE) || defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE)
-
-struct copy_file_data_sendfile
-{
-    //! copy_file implementation that uses sendfile loop. Requires sendfile to support file descriptors.
-    static int impl(int infile, int outfile, uintmax_t size, std::size_t blksize)
-    {
-        // sendfile will not send more than this amount of data in one call
-        BOOST_CONSTEXPR_OR_CONST std::size_t max_batch_size = 0x7ffff000u;
-        uintmax_t offset = 0u;
-        while (offset < size)
-        {
-            uintmax_t size_left = size - offset;
-            std::size_t size_to_copy = max_batch_size;
-            if (size_left < static_cast< uintmax_t >(max_batch_size))
-                size_to_copy = static_cast< std::size_t >(size_left);
-            ssize_t sz = ::sendfile(outfile, infile, NULL, size_to_copy);
-            if (BOOST_UNLIKELY(sz < 0))
-            {
-                int err = errno;
-                if (err == EINTR)
-                    continue;
-
-                if (offset == 0u)
-                {
-                    // sendfile may fail with EINVAL if the underlying filesystem does not support it
-                    if (err == EINVAL)
-                    {
-                    fallback_to_read_write:
-                        return copy_file_data_read_write(infile, outfile, size, blksize);
-                    }
-
-                    if (err == ENOSYS)
-                    {
-                        filesystem::detail::atomic_store_relaxed(copy_file_data, &copy_file_data_read_write);
-                        goto fallback_to_read_write;
-                    }
-                }
-
-                return err;
-            }
-
-            offset += sz;
-        }
-
-        return 0;
-    }
-};
-
-#endif // defined(BOOST_FILESYSTEM_USE_SENDFILE)
-
-#if defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-
-struct copy_file_data_copy_file_range
-{
-    //! copy_file implementation that uses copy_file_range loop. Requires copy_file_range to support cross-filesystem copying.
-    static int impl(int infile, int outfile, uintmax_t size, std::size_t blksize)
-    {
-        // Although copy_file_range does not document any particular upper limit of one transfer, still use some upper bound to guarantee
-        // that size_t is not overflown in case if off_t is larger and the file size does not fit in size_t.
-        BOOST_CONSTEXPR_OR_CONST std::size_t max_batch_size = 0x7ffff000u;
-        uintmax_t offset = 0u;
-        while (offset < size)
-        {
-            uintmax_t size_left = size - offset;
-            std::size_t size_to_copy = max_batch_size;
-            if (size_left < static_cast< uintmax_t >(max_batch_size))
-                size_to_copy = static_cast< std::size_t >(size_left);
-            // Note: Use syscall directly to avoid depending on libc version. copy_file_range is added in glibc 2.27.
-            // uClibc-ng does not have copy_file_range as of the time of this writing (the latest uClibc-ng release is 1.0.33).
-            loff_t sz = ::syscall(__NR_copy_file_range, infile, (loff_t*)NULL, outfile, (loff_t*)NULL, size_to_copy, (unsigned int)0u);
-            if (BOOST_UNLIKELY(sz < 0))
-            {
-                int err = errno;
-                if (err == EINTR)
-                    continue;
-
-                if (offset == 0u)
-                {
-                    // copy_file_range may fail with EINVAL if the underlying filesystem does not support it.
-                    // In some RHEL/CentOS 7.7-7.8 kernel versions, copy_file_range on NFSv4 is also known to return EOPNOTSUPP
-                    // if the remote server does not support COPY, despite that it is not a documented error code.
-                    // See https://patchwork.kernel.org/project/linux-nfs/patch/[email protected]/
-                    // and https://bugzilla.redhat.com/show_bug.cgi?id=1783554.
-                    if (err == EINVAL || err == EOPNOTSUPP)
-                    {
-#if !defined(BOOST_FILESYSTEM_USE_SENDFILE)
-                    fallback_to_read_write:
-#endif
-                        return copy_file_data_read_write(infile, outfile, size, blksize);
-                    }
-
-                    if (err == EXDEV)
-                    {
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE)
-                    fallback_to_sendfile:
-                        return copy_file_data_sendfile::impl(infile, outfile, size, blksize);
-#else
-                        goto fallback_to_read_write;
-#endif
-                    }
-
-                    if (err == ENOSYS)
-                    {
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE)
-                        filesystem::detail::atomic_store_relaxed(copy_file_data, &check_fs_type< copy_file_data_sendfile >);
-                        goto fallback_to_sendfile;
-#else
-                        filesystem::detail::atomic_store_relaxed(copy_file_data, &copy_file_data_read_write);
-                        goto fallback_to_read_write;
-#endif
-                    }
-                }
-
-                return err;
-            }
-
-            offset += sz;
-        }
-
-        return 0;
-    }
-};
-
-#endif // defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE) || defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-
-//! copy_file_data wrapper that tests if a read/write loop must be used for a given filesystem
-template< typename CopyFileData >
-int check_fs_type(int infile, int outfile, uintmax_t size, std::size_t blksize)
-{
-    {
-        // Some filesystems have regular files with generated content. Such files have arbitrary size, including zero,
-        // but have actual content. Linux system calls sendfile or copy_file_range will not copy contents of such files,
-        // so we must use a read/write loop to handle them.
-        // https://lore.kernel.org/linux-fsdevel/[email protected]/T/
-        struct statfs sfs;
-        while (true)
-        {
-            int err = ::fstatfs(infile, &sfs);
-            if (BOOST_UNLIKELY(err < 0))
-            {
-                err = errno;
-                if (err == EINTR)
-                    continue;
-
-                goto fallback_to_read_write;
-            }
-
-            break;
-        }
-
-        if (BOOST_UNLIKELY(sfs.f_type == PROC_SUPER_MAGIC ||
-            sfs.f_type == SYSFS_MAGIC ||
-            sfs.f_type == TRACEFS_MAGIC ||
-            sfs.f_type == DEBUGFS_MAGIC))
-        {
-        fallback_to_read_write:
-            return copy_file_data_read_write(infile, outfile, size, blksize);
-        }
-    }
-
-    return CopyFileData::impl(infile, outfile, size, blksize);
-}
-
-#endif // defined(BOOST_FILESYSTEM_USE_SENDFILE) || defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-
-#if defined(linux) || defined(__linux) || defined(__linux__)
-
-//! Initializes copy_file_data implementation pointer
-inline void init_copy_file_data_impl(unsigned int major_ver, unsigned int minor_ver, unsigned int patch_ver)
-{
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE) || defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-    copy_file_data_t* cfd = &copy_file_data_read_write;
-
-#if defined(BOOST_FILESYSTEM_USE_SENDFILE)
-    // sendfile started accepting file descriptors as the target in Linux 2.6.33
-    if (major_ver > 2u || (major_ver == 2u && (minor_ver > 6u || (minor_ver == 6u && patch_ver >= 33u))))
-        cfd = &check_fs_type< copy_file_data_sendfile >;
-#endif
-
-#if defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-    // Although copy_file_range appeared in Linux 4.5, it did not support cross-filesystem copying until 5.3.
-    // copy_file_data_copy_file_range will fallback to copy_file_data_sendfile if copy_file_range returns EXDEV.
-    if (major_ver > 4u || (major_ver == 4u && minor_ver >= 5u))
-        cfd = &check_fs_type< copy_file_data_copy_file_range >;
-#endif
-
-    filesystem::detail::atomic_store_relaxed(copy_file_data, cfd);
-#endif // defined(BOOST_FILESYSTEM_USE_SENDFILE) || defined(BOOST_FILESYSTEM_USE_COPY_FILE_RANGE)
-}
-
-#endif // defined(linux) || defined(__linux) || defined(__linux__)
-
-#if defined(linux) || defined(__linux) || defined(__linux__)
-
-struct syscall_initializer
-{
-    syscall_initializer()
-    {
-        struct ::utsname system_info;
-        if (BOOST_UNLIKELY(::uname(&system_info) < 0))
-            return;
-
-        unsigned int major_ver = 0u, minor_ver = 0u, patch_ver = 0u;
-        int count = std::sscanf(system_info.release, "%u.%u.%u", &major_ver, &minor_ver, &patch_ver);
-        if (BOOST_UNLIKELY(count < 3))
-            return;
-
-        init_statx_impl(major_ver, minor_ver, patch_ver);
-        init_copy_file_data_impl(major_ver, minor_ver, patch_ver);
-        init_fill_random_impl(major_ver, minor_ver, patch_ver);
-    }
-};
-
-BOOST_FILESYSTEM_INIT_PRIORITY(BOOST_FILESYSTEM_FUNC_PTR_INIT_PRIORITY) BOOST_ATTRIBUTE_UNUSED BOOST_FILESYSTEM_ATTRIBUTE_RETAIN
-const syscall_initializer syscall_init;
-
-#endif // defined(linux) || defined(__linux) || defined(__linux__)
-
-//! remove() implementation
-inline bool remove_impl
-(
-    path const& p,
-    fs::file_type type,
-    error_code* ec
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-    , int basedir_fd = AT_FDCWD
-#endif
-)
-{
-    if (type == fs::file_not_found)
-        return false;
-
-    int res;
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-    res = ::unlinkat(basedir_fd, p.c_str(), type == fs::directory_file ? AT_REMOVEDIR : 0);
-#else
-    if (type == fs::directory_file)
-        res = ::rmdir(p.c_str());
-    else
-        res = ::unlink(p.c_str());
-#endif
-
-    if (res != 0)
-    {
-        int err = errno;
-        if (BOOST_UNLIKELY(!not_found_error(err)))
-            emit_error(err, p, ec, "boost::filesystem::remove");
-
-        return false;
-    }
-
-    return true;
-}
-
-//! remove() implementation
-inline bool remove_impl(path const& p, error_code* ec)
-{
-    // Since POSIX remove() is specified to work with either files or directories, in a
-    // perfect world it could just be called. But some important real-world operating
-    // systems (Windows, Mac OS, for example) don't implement the POSIX spec. So
-    // we have to distinguish between files and directories and call corresponding APIs
-    // to remove them.
-
-    error_code local_ec;
-    fs::file_type type = fs::detail::symlink_status_impl(p, &local_ec).type();
-    if (BOOST_UNLIKELY(type == fs::status_error))
-    {
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove", p, local_ec));
-
-        *ec = local_ec;
-        return false;
-    }
-
-    return fs::detail::remove_impl(p, type, ec);
-}
-
-//! remove_all() implementation
-uintmax_t remove_all_impl
-(
-    path const& p,
-    error_code* ec
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-    , int basedir_fd = AT_FDCWD
-#endif
-)
-{
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-    fs::detail::directory_iterator_params params;
-    params.basedir_fd = basedir_fd;
-    params.iterator_fd = -1;
-#endif
-
-    error_code dit_create_ec;
-    for (unsigned int attempt = 0u; attempt < remove_all_directory_replaced_retry_count; ++attempt)
-    {
-        fs::file_type type;
-        {
-            error_code local_ec;
-            type = fs::detail::symlink_status_impl
-            (
-                p,
-                &local_ec
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-                , basedir_fd
-#endif
-            ).type();
-
-            if (type == fs::file_not_found)
-                return 0u;
-
-            if (BOOST_UNLIKELY(type == fs::status_error))
-            {
-                if (!ec)
-                    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all", p, local_ec));
-
-                *ec = local_ec;
-                return static_cast< uintmax_t >(-1);
-            }
-        }
-
-        uintmax_t count = 0u;
-        if (type == fs::directory_file) // but not a directory symlink
-        {
-            fs::directory_iterator itr;
-            fs::detail::directory_iterator_construct
-            (
-                itr,
-                p,
-                static_cast< unsigned int >(directory_options::_detail_no_follow),
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-                &params,
-#else
-                NULL,
-#endif
-                &dit_create_ec
-            );
-
-            if (BOOST_UNLIKELY(!!dit_create_ec))
-            {
-                if (dit_create_ec == error_code(ENOTDIR, system_category()))
-                    continue;
-
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW)
-                // If open(2) with O_NOFOLLOW fails with ELOOP, this means that either the path contains a loop
-                // of symbolic links, or the last element of the path is a symbolic link. Given that lstat(2) above
-                // did not fail, most likely it is the latter case. I.e. between the lstat above and this open call
-                // the filesystem was modified so that the path no longer refers to a directory file (as opposed to a symlink).
-                if (dit_create_ec == error_code(ELOOP, system_category()))
-                    continue;
-#endif // defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW)
-
-                if (!ec)
-                    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all", p, dit_create_ec));
-
-                *ec = dit_create_ec;
-                return static_cast< uintmax_t >(-1);
-            }
-
-            const fs::directory_iterator end_dit;
-            while (itr != end_dit)
-            {
-                count += fs::detail::remove_all_impl
-                (
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-                    path_algorithms::filename_v4(itr->path()),
-#else
-                    itr->path(),
-#endif
-                    ec
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-                    , params.iterator_fd
-#endif
-                );
-                if (ec && *ec)
-                    return static_cast< uintmax_t >(-1);
-
-                fs::detail::directory_iterator_increment(itr, ec);
-                if (ec && *ec)
-                    return static_cast< uintmax_t >(-1);
-            }
-        }
-
-        count += fs::detail::remove_impl
-        (
-            p,
-            type,
-            ec
-#if defined(BOOST_FILESYSTEM_HAS_FDOPENDIR_NOFOLLOW) && defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-            , basedir_fd
-#endif
-        );
-        if (ec && *ec)
-            return static_cast< uintmax_t >(-1);
-
-        return count;
-    }
-
-    if (!ec)
-        BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all: path cannot be opened as a directory", p, dit_create_ec));
-
-    *ec = dit_create_ec;
-    return static_cast< uintmax_t >(-1);
-}
-
-#else // defined(BOOST_POSIX_API)
-
-//--------------------------------------------------------------------------------------//
-//                                                                                      //
-//                            Windows-specific helpers                                  //
-//                                                                                      //
-//--------------------------------------------------------------------------------------//
-
-//! FILE_BASIC_INFO definition from Windows SDK
-struct file_basic_info
-{
-    LARGE_INTEGER CreationTime;
-    LARGE_INTEGER LastAccessTime;
-    LARGE_INTEGER LastWriteTime;
-    LARGE_INTEGER ChangeTime;
-    DWORD FileAttributes;
-};
-
-//! FILE_DISPOSITION_INFO definition from Windows SDK
-struct file_disposition_info
-{
-    BOOLEAN DeleteFile;
-};
-
-//! FILE_DISPOSITION_INFO_EX definition from Windows SDK
-struct file_disposition_info_ex
-{
-    DWORD Flags;
-};
-
-#ifndef FILE_DISPOSITION_FLAG_DELETE
-#define FILE_DISPOSITION_FLAG_DELETE 0x00000001
-#endif
-// Available since Windows 10 1709
-#ifndef FILE_DISPOSITION_FLAG_POSIX_SEMANTICS
-#define FILE_DISPOSITION_FLAG_POSIX_SEMANTICS 0x00000002
-#endif
-// Available since Windows 10 1809
-#ifndef FILE_DISPOSITION_FLAG_IGNORE_READONLY_ATTRIBUTE
-#define FILE_DISPOSITION_FLAG_IGNORE_READONLY_ATTRIBUTE 0x00000010
-#endif
-
-//  REPARSE_DATA_BUFFER related definitions are found in ntifs.h, which is part of the
-//  Windows Device Driver Kit. Since that's inconvenient, the definitions are provided
-//  here. See http://msdn.microsoft.com/en-us/library/ms791514.aspx
-struct reparse_data_buffer
-{
-    ULONG ReparseTag;
-    USHORT ReparseDataLength;
-    USHORT Reserved;
-    union
-    {
-        /*
-         * In SymbolicLink and MountPoint reparse points, there are two names.
-         * SubstituteName is the effective replacement path for the reparse point.
-         * This is what should be used for path traversal.
-         * PrintName is intended for presentation to the user and may omit some
-         * elements of the path or be absent entirely.
-         *
-         * Examples of substitute and print names:
-         * mklink /D ldrive c:\
-         * SubstituteName: "\??\c:\"
-         * PrintName: "c:\"
-         *
-         * mklink /J ldrive c:\
-         * SubstituteName: "\??\C:\"
-         * PrintName: "c:\"
-         *
-         * junction ldrive c:\
-         * SubstituteName: "\??\C:\"
-         * PrintName: ""
-         *
-         * box.com mounted cloud storage
-         * SubstituteName: "\??\Volume{<UUID>}\"
-         * PrintName: ""
-         */
-        struct
-        {
-            USHORT SubstituteNameOffset;
-            USHORT SubstituteNameLength;
-            USHORT PrintNameOffset;
-            USHORT PrintNameLength;
-            ULONG Flags;
-            WCHAR PathBuffer[1];
-        } SymbolicLinkReparseBuffer;
-        struct
-        {
-            USHORT SubstituteNameOffset;
-            USHORT SubstituteNameLength;
-            USHORT PrintNameOffset;
-            USHORT PrintNameLength;
-            WCHAR PathBuffer[1];
-        } MountPointReparseBuffer;
-        struct
-        {
-            UCHAR DataBuffer[1];
-        } GenericReparseBuffer;
-    };
-};
-
-// Our convenience type for allocating REPARSE_DATA_BUFFER along with sufficient space after it
-union reparse_data_buffer_with_storage
-{
-    reparse_data_buffer rdb;
-    unsigned char storage[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
-};
-
-//  Windows kernel32.dll functions that may or may not be present
-//  must be accessed through pointers
-
-typedef BOOL (WINAPI CreateHardLinkW_t)(
-    /*__in*/ LPCWSTR lpFileName,
-    /*__in*/ LPCWSTR lpExistingFileName,
-    /*__reserved*/ LPSECURITY_ATTRIBUTES lpSecurityAttributes);
-
-CreateHardLinkW_t* create_hard_link_api = NULL;
-
-typedef BOOLEAN (WINAPI CreateSymbolicLinkW_t)(
-    /*__in*/ LPCWSTR lpSymlinkFileName,
-    /*__in*/ LPCWSTR lpTargetFileName,
-    /*__in*/ DWORD dwFlags);
-
-CreateSymbolicLinkW_t* create_symbolic_link_api = NULL;
-
-//! SetFileInformationByHandle signature. Available since Windows Vista.
-typedef BOOL (WINAPI SetFileInformationByHandle_t)(
-    /*_In_*/ HANDLE hFile,
-    /*_In_*/ file_info_by_handle_class FileInformationClass, // the actual type is FILE_INFO_BY_HANDLE_CLASS enum
-    /*_In_reads_bytes_(dwBufferSize)*/ LPVOID lpFileInformation,
-    /*_In_*/ DWORD dwBufferSize);
-
-SetFileInformationByHandle_t* set_file_information_by_handle_api = NULL;
-
-} // unnamed namespace
-
-GetFileInformationByHandleEx_t* get_file_information_by_handle_ex_api = NULL;
-
-#if !defined(UNDER_CE)
-NtCreateFile_t* nt_create_file_api = NULL;
-NtQueryDirectoryFile_t* nt_query_directory_file_api = NULL;
-#endif // !defined(UNDER_CE)
-
-namespace {
-
-//! remove() implementation type
-enum remove_impl_type
-{
-    remove_nt5,                            //!< Use Windows XP API
-    remove_disp,                           //!< Use FILE_DISPOSITION_INFO (Windows Vista and later)
-    remove_disp_ex_flag_posix_semantics,   //!< Use FILE_DISPOSITION_INFO_EX with FILE_DISPOSITION_FLAG_POSIX_SEMANTICS
-    remove_disp_ex_flag_ignore_readonly    //!< Use FILE_DISPOSITION_INFO_EX with FILE_DISPOSITION_FLAG_POSIX_SEMANTICS | FILE_DISPOSITION_FLAG_IGNORE_READONLY_ATTRIBUTE
-};
-
-remove_impl_type g_remove_impl_type = remove_nt5;
-
-//! Initializes WinAPI function pointers
-BOOST_FILESYSTEM_INIT_FUNC init_winapi_func_ptrs()
-{
-    boost::winapi::HMODULE_ h = boost::winapi::GetModuleHandleW(L"kernel32.dll");
-    if (BOOST_LIKELY(!!h))
-    {
-        GetFileInformationByHandleEx_t* get_file_information_by_handle_ex = (GetFileInformationByHandleEx_t*)boost::winapi::get_proc_address(h, "GetFileInformationByHandleEx");
-        filesystem::detail::atomic_store_relaxed(get_file_information_by_handle_ex_api, get_file_information_by_handle_ex);
-        SetFileInformationByHandle_t* set_file_information_by_handle = (SetFileInformationByHandle_t*)boost::winapi::get_proc_address(h, "SetFileInformationByHandle");
-        filesystem::detail::atomic_store_relaxed(set_file_information_by_handle_api, set_file_information_by_handle);
-        filesystem::detail::atomic_store_relaxed(create_hard_link_api, (CreateHardLinkW_t*)boost::winapi::get_proc_address(h, "CreateHardLinkW"));
-        filesystem::detail::atomic_store_relaxed(create_symbolic_link_api, (CreateSymbolicLinkW_t*)boost::winapi::get_proc_address(h, "CreateSymbolicLinkW"));
-
-        if (get_file_information_by_handle_ex && set_file_information_by_handle)
-        {
-            // Enable the most advanced implementation based on GetFileInformationByHandleEx/SetFileInformationByHandle.
-            // If certain flags are not supported by the OS, the remove() implementation will downgrade accordingly.
-            filesystem::detail::atomic_store_relaxed(g_remove_impl_type, remove_disp_ex_flag_ignore_readonly);
-        }
-    }
-
-#if !defined(UNDER_CE)
-    h = boost::winapi::GetModuleHandleW(L"ntdll.dll");
-    if (BOOST_LIKELY(!!h))
-    {
-        filesystem::detail::atomic_store_relaxed(nt_create_file_api, (NtCreateFile_t*)boost::winapi::get_proc_address(h, "NtCreateFile"));
-        filesystem::detail::atomic_store_relaxed(nt_query_directory_file_api, (NtQueryDirectoryFile_t*)boost::winapi::get_proc_address(h, "NtQueryDirectoryFile"));
-    }
-
-    init_directory_iterator_impl();
-#endif // !defined(UNDER_CE)
-
-    return BOOST_FILESYSTEM_INITRETSUCCESS_V;
-}
-
-#if defined(_MSC_VER)
-
-#if _MSC_VER >= 1400
-
-#pragma section(".CRT$XCL", long, read)
-__declspec(allocate(".CRT$XCL")) BOOST_ATTRIBUTE_UNUSED BOOST_FILESYSTEM_ATTRIBUTE_RETAIN
-extern const init_func_ptr_t p_init_winapi_func_ptrs = &init_winapi_func_ptrs;
-
-#else // _MSC_VER >= 1400
-
-#if (_MSC_VER >= 1300) // 1300 == VC++ 7.0
-#pragma data_seg(push, old_seg)
-#endif
-#pragma data_seg(".CRT$XCL")
-BOOST_ATTRIBUTE_UNUSED BOOST_FILESYSTEM_ATTRIBUTE_RETAIN
-extern const init_func_ptr_t p_init_winapi_func_ptrs = &init_winapi_func_ptrs;
-#pragma data_seg()
-#if (_MSC_VER >= 1300) // 1300 == VC++ 7.0
-#pragma data_seg(pop, old_seg)
-#endif
-
-#endif // _MSC_VER >= 1400
-
-#if defined(BOOST_FILESYSTEM_NO_ATTRIBUTE_RETAIN)
-//! Makes sure the global initializer pointers are referenced and not removed by linker
-struct globals_retainer
-{
-    const init_func_ptr_t* volatile m_p_init_winapi_func_ptrs;
-
-    globals_retainer() { m_p_init_winapi_func_ptrs = &p_init_winapi_func_ptrs; }
-};
-BOOST_ATTRIBUTE_UNUSED
-const globals_retainer g_globals_retainer;
-#endif // defined(BOOST_FILESYSTEM_NO_ATTRIBUTE_RETAIN)
-
-#else // defined(_MSC_VER)
-
-//! Invokes WinAPI function pointers initialization
-struct winapi_func_ptrs_initializer
-{
-    winapi_func_ptrs_initializer() { init_winapi_func_ptrs(); }
-};
-
-BOOST_FILESYSTEM_INIT_PRIORITY(BOOST_FILESYSTEM_FUNC_PTR_INIT_PRIORITY) BOOST_ATTRIBUTE_UNUSED BOOST_FILESYSTEM_ATTRIBUTE_RETAIN
-const winapi_func_ptrs_initializer winapi_func_ptrs_init;
-
-#endif // defined(_MSC_VER)
-
-
-// Windows CE has no environment variables
-#if !defined(UNDER_CE)
-inline std::wstring wgetenv(const wchar_t* name)
-{
-    // use a separate buffer since C++03 basic_string is not required to be contiguous
-    const DWORD size = ::GetEnvironmentVariableW(name, NULL, 0);
-    if (size > 0)
-    {
-        boost::scoped_array< wchar_t > buf(new wchar_t[size]);
-        if (BOOST_LIKELY(::GetEnvironmentVariableW(name, buf.get(), size) > 0))
-            return std::wstring(buf.get());
-    }
-
-    return std::wstring();
-}
-#endif // !defined(UNDER_CE)
-
-inline bool not_found_error(int errval) BOOST_NOEXCEPT
-{
-    return errval == ERROR_FILE_NOT_FOUND || errval == ERROR_PATH_NOT_FOUND || errval == ERROR_INVALID_NAME // "tools/jam/src/:sys:stat.h", "//foo"
-        || errval == ERROR_INVALID_DRIVE                                                                    // USB card reader with no card inserted
-        || errval == ERROR_NOT_READY                                                                        // CD/DVD drive with no disc inserted
-        || errval == ERROR_INVALID_PARAMETER                                                                // ":sys:stat.h"
-        || errval == ERROR_BAD_PATHNAME                                                                     // "//no-host" on Win64
-        || errval == ERROR_BAD_NETPATH                                                                      // "//no-host" on Win32
-        || errval == ERROR_BAD_NET_NAME;                                                                    // "//no-host/no-share" on Win10 x64
-}
-
-// these constants come from inspecting some Microsoft sample code
-inline std::time_t to_time_t(FILETIME const& ft) BOOST_NOEXCEPT
-{
-    uint64_t t = (static_cast< uint64_t >(ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
-    t -= 116444736000000000ull;
-    t /= 10000000u;
-    return static_cast< std::time_t >(t);
-}
-
-inline void to_FILETIME(std::time_t t, FILETIME& ft) BOOST_NOEXCEPT
-{
-    uint64_t temp = t;
-    temp *= 10000000u;
-    temp += 116444736000000000ull;
-    ft.dwLowDateTime = static_cast< DWORD >(temp);
-    ft.dwHighDateTime = static_cast< DWORD >(temp >> 32);
-}
-
-} // unnamed namespace
-
-#if !defined(UNDER_CE)
-
-//! The flag indicates whether OBJ_DONT_REPARSE flag is not supported by the kernel
-static bool g_no_obj_dont_reparse = false;
-
-//! Creates a file handle for a file relative to a previously opened base directory. The file path must be relative and in preferred format.
-boost::winapi::NTSTATUS_ nt_create_file_handle_at(HANDLE& out, HANDLE basedir_handle, boost::filesystem::path const& p, ULONG FileAttributes, ACCESS_MASK DesiredAccess, ULONG ShareMode, ULONG CreateDisposition, ULONG CreateOptions)
-{
-    NtCreateFile_t* nt_create_file = filesystem::detail::atomic_load_relaxed(nt_create_file_api);
-    if (BOOST_UNLIKELY(!nt_create_file))
-        return STATUS_NOT_IMPLEMENTED;
-
-    unicode_string obj_name = {};
-    obj_name.Buffer = const_cast< wchar_t* >(p.c_str());
-    obj_name.Length = obj_name.MaximumLength = static_cast< USHORT >(p.size() * sizeof(wchar_t));
-
-    object_attributes obj_attrs = {};
-    obj_attrs.Length = sizeof(obj_attrs);
-    obj_attrs.RootDirectory = basedir_handle;
-    obj_attrs.ObjectName = &obj_name;
-
-    obj_attrs.Attributes = OBJ_CASE_INSENSITIVE;
-    if ((CreateOptions & FILE_OPEN_REPARSE_POINT) != 0u && !filesystem::detail::atomic_load_relaxed(g_no_obj_dont_reparse))
-        obj_attrs.Attributes |= OBJ_DONT_REPARSE;
-
-    io_status_block iosb;
-    boost::winapi::NTSTATUS_ status = nt_create_file
-    (
-        &out,
-        DesiredAccess,
-        &obj_attrs,
-        &iosb,
-        NULL, // AllocationSize
-        FileAttributes,
-        ShareMode,
-        CreateDisposition,
-        CreateOptions,
-        NULL, // EaBuffer
-        0u // EaLength
-    );
-
-    if (BOOST_UNLIKELY(status == STATUS_INVALID_PARAMETER && (obj_attrs.Attributes & OBJ_DONT_REPARSE) != 0u))
-    {
-        // OBJ_DONT_REPARSE is supported since Windows 10, retry without it
-        filesystem::detail::atomic_store_relaxed(g_no_obj_dont_reparse, true);
-        obj_attrs.Attributes &= ~static_cast< ULONG >(OBJ_DONT_REPARSE);
-
-        status = nt_create_file
-        (
-            &out,
-            DesiredAccess,
-            &obj_attrs,
-            &iosb,
-            NULL, // AllocationSize
-            FileAttributes,
-            ShareMode,
-            CreateDisposition,
-            CreateOptions,
-            NULL, // EaBuffer
-            0u // EaLength
-        );
-    }
-
-    return status;
-}
-
-#endif // !defined(UNDER_CE)
-
-ULONG get_reparse_point_tag_ioctl(HANDLE h, path const& p, error_code* ec)
-{
-    boost::scoped_ptr< reparse_data_buffer_with_storage > buf(new (std::nothrow) reparse_data_buffer_with_storage);
-    if (BOOST_UNLIKELY(!buf.get()))
-    {
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("Cannot allocate memory to query reparse point", p, make_error_code(system::errc::not_enough_memory)));
-
-        *ec = make_error_code(system::errc::not_enough_memory);
-        return 0u;
-    }
-
-    // Query the reparse data
-    DWORD dwRetLen = 0u;
-    BOOL result = ::DeviceIoControl(h, FSCTL_GET_REPARSE_POINT, NULL, 0, buf.get(), sizeof(*buf), &dwRetLen, NULL);
-    if (BOOST_UNLIKELY(!result))
-    {
-        DWORD err = ::GetLastError();
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("Failed to query reparse point", p, error_code(err, system_category())));
-
-        ec->assign(err, system_category());
-        return 0u;
-    }
-
-    return buf->rdb.ReparseTag;
-}
-
-namespace {
-
-inline std::size_t get_full_path_name(path const& src, std::size_t len, wchar_t* buf, wchar_t** p)
-{
-    return static_cast< std::size_t >(::GetFullPathNameW(src.c_str(), static_cast< DWORD >(len), buf, p));
-}
-
-inline fs::file_status process_status_failure(DWORD errval, path const& p, error_code* ec)
-{
-    if (ec)                                    // always report errval, even though some
-        ec->assign(errval, system_category()); // errval values are not status_errors
-
-    if (not_found_error(errval))
-    {
-        return fs::file_status(fs::file_not_found, fs::no_perms);
-    }
-    else if (errval == ERROR_SHARING_VIOLATION)
-    {
-        return fs::file_status(fs::type_unknown);
-    }
-
-    if (!ec)
-        BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::status", p, error_code(errval, system_category())));
-
-    return fs::file_status(fs::status_error);
-}
-
-inline fs::file_status process_status_failure(path const& p, error_code* ec)
-{
-    return process_status_failure(::GetLastError(), p, ec);
-}
-
-//! (symlink_)status() by handle implementation
-fs::file_status status_by_handle(HANDLE h, path const& p, error_code* ec)
-{
-    fs::file_type ftype;
-    DWORD attrs;
-    ULONG reparse_tag = 0u;
-    GetFileInformationByHandleEx_t* get_file_information_by_handle_ex = filesystem::detail::atomic_load_relaxed(get_file_information_by_handle_ex_api);
-    if (BOOST_LIKELY(get_file_information_by_handle_ex != NULL))
-    {
-        file_attribute_tag_info info;
-        BOOL res = get_file_information_by_handle_ex(h, file_attribute_tag_info_class, &info, sizeof(info));
-        if (BOOST_UNLIKELY(!res))
-        {
-            // On FAT/exFAT filesystems requesting FILE_ATTRIBUTE_TAG_INFO returns ERROR_INVALID_PARAMETER.
-            // Presumably, this is because these filesystems don't support reparse points, so ReparseTag
-            // cannot be returned. Also check ERROR_NOT_SUPPORTED for good measure. Fall back to the legacy
-            // code path in this case.
-            DWORD err = ::GetLastError();
-            if (err == ERROR_INVALID_PARAMETER || err == ERROR_NOT_SUPPORTED)
-                goto use_get_file_information_by_handle;
-
-            return process_status_failure(err, p, ec);
-        }
-
-        attrs = info.FileAttributes;
-        reparse_tag = info.ReparseTag;
-    }
-    else
-    {
-    use_get_file_information_by_handle:
-        BY_HANDLE_FILE_INFORMATION info;
-        BOOL res = ::GetFileInformationByHandle(h, &info);
-        if (BOOST_UNLIKELY(!res))
-            return process_status_failure(p, ec);
-
-        attrs = info.dwFileAttributes;
-
-        if ((attrs & FILE_ATTRIBUTE_REPARSE_POINT) != 0u)
-        {
-            reparse_tag = get_reparse_point_tag_ioctl(h, p, ec);
-            if (ec)
-            {
-                if (BOOST_UNLIKELY(!!ec))
-                    return fs::file_status(fs::status_error);
-            }
-        }
-    }
-
-    if ((attrs & FILE_ATTRIBUTE_REPARSE_POINT) != 0u)
-    {
-        if (reparse_tag == IO_REPARSE_TAG_DEDUP)
-            ftype = fs::regular_file;
-        else if (is_reparse_point_tag_a_symlink(reparse_tag))
-            ftype = fs::symlink_file;
-        else
-            ftype = fs::reparse_file;
-    }
-    else if ((attrs & FILE_ATTRIBUTE_DIRECTORY) != 0u)
-    {
-        ftype = fs::directory_file;
-    }
-    else
-    {
-        ftype = fs::regular_file;
-    }
-
-    return fs::file_status(ftype, make_permissions(p, attrs));
-}
-
-//! symlink_status() implementation
-fs::file_status symlink_status_impl(path const& p, error_code* ec)
-{
-    // Normally, we only need FILE_READ_ATTRIBUTES access mode. But SMBv1 reports incorrect
-    // file attributes in GetFileInformationByHandleEx in this case (e.g. it reports FILE_ATTRIBUTE_NORMAL
-    // for a directory in a SMBv1 share), so we add FILE_READ_EA as a workaround.
-    // https://github.com/boostorg/filesystem/issues/282
-    handle_wrapper h(create_file_handle(
-        p.c_str(),
-        FILE_READ_ATTRIBUTES | FILE_READ_EA,
-        FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
-        NULL, // lpSecurityAttributes
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT));
-
-    if (h.handle == INVALID_HANDLE_VALUE)
-    {
-        // For some system files and folders like "System Volume Information" CreateFileW fails
-        // with ERROR_ACCESS_DENIED. GetFileAttributesW succeeds for such files, so try that.
-        // Though this will only help if the file is not a reparse point (symlink or not).
-        DWORD err = ::GetLastError();
-        if (err == ERROR_ACCESS_DENIED)
-        {
-            DWORD attrs = ::GetFileAttributesW(p.c_str());
-            if (attrs != INVALID_FILE_ATTRIBUTES)
-            {
-                if ((attrs & FILE_ATTRIBUTE_REPARSE_POINT) == 0u)
-                    return fs::file_status((attrs & FILE_ATTRIBUTE_DIRECTORY) ? fs::directory_file : fs::regular_file, make_permissions(p, attrs));
-            }
-            else
-            {
-                err = ::GetLastError();
-            }
-        }
-
-        return process_status_failure(err, p, ec);
-    }
-
-    return detail::status_by_handle(h.handle, p, ec);
-}
-
-//! status() implementation
-fs::file_status status_impl(path const& p, error_code* ec)
-{
-    // We should first test if the file is a symlink or a reparse point. Resolving some reparse
-    // points by opening the file may fail, and status() should return file_status(reparse_file) in this case.
-    // Which is what symlink_status() returns.
-    fs::file_status st(detail::symlink_status_impl(p, ec));
-    if (st.type() == symlink_file)
-    {
-        // Resolve the symlink
-        handle_wrapper h(create_file_handle(
-            p.c_str(),
-            FILE_READ_ATTRIBUTES | FILE_READ_EA, // see the comment in symlink_status_impl re. access mode
-            FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-            NULL, // lpSecurityAttributes
-            OPEN_EXISTING,
-            FILE_FLAG_BACKUP_SEMANTICS));
-
-        if (h.handle == INVALID_HANDLE_VALUE)
-            return process_status_failure(p, ec);
-
-        st = detail::status_by_handle(h.handle, p, ec);
-    }
-
-    return st;
-}
-
-//! remove() implementation for Windows XP and older
-bool remove_nt5_impl(path const& p, DWORD attrs, error_code* ec)
-{
-    const bool is_directory = (attrs & FILE_ATTRIBUTE_DIRECTORY) != 0;
-    const bool is_read_only = (attrs & FILE_ATTRIBUTE_READONLY) != 0;
-    if (is_read_only)
-    {
-        // RemoveDirectoryW and DeleteFileW do not allow to remove a read-only file, so we have to drop the attribute
-        DWORD new_attrs = attrs & ~FILE_ATTRIBUTE_READONLY;
-        BOOL res = ::SetFileAttributesW(p.c_str(), new_attrs);
-        if (BOOST_UNLIKELY(!res))
-        {
-            DWORD err = ::GetLastError();
-            if (!not_found_error(err))
-                emit_error(err, p, ec, "boost::filesystem::remove");
-
-            return false;
-        }
-    }
-
-    BOOL res;
-    if (!is_directory)
-    {
-        // DeleteFileW works for file symlinks by removing the symlink, not the target.
-        res = ::DeleteFileW(p.c_str());
-    }
-    else
-    {
-        // RemoveDirectoryW works for symlinks and junctions by removing the symlink, not the target,
-        // even if the target directory is not empty.
-        // Note that unlike opening the directory with FILE_FLAG_DELETE_ON_CLOSE flag, RemoveDirectoryW
-        // will fail if the directory is not empty.
-        res = ::RemoveDirectoryW(p.c_str());
-    }
-
-    if (BOOST_UNLIKELY(!res))
-    {
-        DWORD err = ::GetLastError();
-        if (!not_found_error(err))
-        {
-            if (is_read_only)
-            {
-                // Try to restore the read-only attribute
-                ::SetFileAttributesW(p.c_str(), attrs);
-            }
-
-            emit_error(err, p, ec, "boost::filesystem::remove");
-        }
-
-        return false;
-    }
-
-    return true;
-}
-
-//! remove() by handle implementation for Windows Vista and newer
-DWORD remove_nt6_by_handle(HANDLE handle, remove_impl_type impl)
-{
-    GetFileInformationByHandleEx_t* get_file_information_by_handle_ex = filesystem::detail::atomic_load_relaxed(get_file_information_by_handle_ex_api);
-    SetFileInformationByHandle_t* set_file_information_by_handle = filesystem::detail::atomic_load_relaxed(set_file_information_by_handle_api);
-    DWORD err = 0u;
-    switch (impl)
-    {
-    case remove_disp_ex_flag_ignore_readonly:
-        {
-            file_disposition_info_ex info;
-            info.Flags = FILE_DISPOSITION_FLAG_DELETE | FILE_DISPOSITION_FLAG_POSIX_SEMANTICS | FILE_DISPOSITION_FLAG_IGNORE_READONLY_ATTRIBUTE;
-            BOOL res = set_file_information_by_handle(handle, file_disposition_info_ex_class, &info, sizeof(info));
-            if (BOOST_LIKELY(!!res))
-                break;
-
-            err = ::GetLastError();
-            if (BOOST_UNLIKELY(err == ERROR_INVALID_PARAMETER || err == ERROR_INVALID_FUNCTION || err == ERROR_NOT_SUPPORTED || err == ERROR_CALL_NOT_IMPLEMENTED))
-            {
-                // Downgrade to the older implementation
-                impl = remove_disp_ex_flag_posix_semantics;
-                filesystem::detail::atomic_store_relaxed(g_remove_impl_type, impl);
-            }
-            else
-            {
-                break;
-            }
-        }
-        BOOST_FALLTHROUGH;
-
-    case remove_disp_ex_flag_posix_semantics:
-        {
-            file_disposition_info_ex info;
-            info.Flags = FILE_DISPOSITION_FLAG_DELETE | FILE_DISPOSITION_FLAG_POSIX_SEMANTICS;
-            BOOL res = set_file_information_by_handle(handle, file_disposition_info_ex_class, &info, sizeof(info));
-            if (BOOST_LIKELY(!!res))
-            {
-                err = 0u;
-                break;
-            }
-
-            err = ::GetLastError();
-            if (err == ERROR_ACCESS_DENIED)
-            {
-                // Check if the file is read-only and reset the attribute
-                file_basic_info basic_info;
-                res = get_file_information_by_handle_ex(handle, file_basic_info_class, &basic_info, sizeof(basic_info));
-                if (BOOST_UNLIKELY(!res || (basic_info.FileAttributes & FILE_ATTRIBUTE_READONLY) == 0))
-                    break; // return ERROR_ACCESS_DENIED
-
-                basic_info.FileAttributes &= ~FILE_ATTRIBUTE_READONLY;
-
-                res = set_file_information_by_handle(handle, file_basic_info_class, &basic_info, sizeof(basic_info));
-                if (BOOST_UNLIKELY(!res))
-                {
-                    err = ::GetLastError();
-                    break;
-                }
-
-                // Try to set the flag again
-                res = set_file_information_by_handle(handle, file_disposition_info_ex_class, &info, sizeof(info));
-                if (BOOST_LIKELY(!!res))
-                {
-                    err = 0u;
-                    break;
-                }
-
-                err = ::GetLastError();
-
-                // Try to restore the read-only flag
-                basic_info.FileAttributes |= FILE_ATTRIBUTE_READONLY;
-                set_file_information_by_handle(handle, file_basic_info_class, &basic_info, sizeof(basic_info));
-
-                break;
-            }
-            else if (BOOST_UNLIKELY(err == ERROR_INVALID_PARAMETER || err == ERROR_INVALID_FUNCTION || err == ERROR_NOT_SUPPORTED || err == ERROR_CALL_NOT_IMPLEMENTED))
-            {
-                // Downgrade to the older implementation
-                impl = remove_disp;
-                filesystem::detail::atomic_store_relaxed(g_remove_impl_type, impl);
-            }
-            else
-            {
-                break;
-            }
-        }
-        BOOST_FALLTHROUGH;
-
-    default:
-        {
-            file_disposition_info info;
-            info.DeleteFile = true;
-            BOOL res = set_file_information_by_handle(handle, file_disposition_info_class, &info, sizeof(info));
-            if (BOOST_LIKELY(!!res))
-            {
-                err = 0u;
-                break;
-            }
-
-            err = ::GetLastError();
-            if (err == ERROR_ACCESS_DENIED)
-            {
-                // Check if the file is read-only and reset the attribute
-                file_basic_info basic_info;
-                res = get_file_information_by_handle_ex(handle, file_basic_info_class, &basic_info, sizeof(basic_info));
-                if (BOOST_UNLIKELY(!res || (basic_info.FileAttributes & FILE_ATTRIBUTE_READONLY) == 0))
-                    break; // return ERROR_ACCESS_DENIED
-
-                basic_info.FileAttributes &= ~FILE_ATTRIBUTE_READONLY;
-
-                res = set_file_information_by_handle(handle, file_basic_info_class, &basic_info, sizeof(basic_info));
-                if (BOOST_UNLIKELY(!res))
-                {
-                    err = ::GetLastError();
-                    break;
-                }
-
-                // Try to set the flag again
-                res = set_file_information_by_handle(handle, file_disposition_info_class, &info, sizeof(info));
-                if (BOOST_LIKELY(!!res))
-                {
-                    err = 0u;
-                    break;
-                }
-
-                err = ::GetLastError();
-
-                // Try to restore the read-only flag
-                basic_info.FileAttributes |= FILE_ATTRIBUTE_READONLY;
-                set_file_information_by_handle(handle, file_basic_info_class, &basic_info, sizeof(basic_info));
-            }
-
-            break;
-        }
-    }
-
-    return err;
-}
-
-//! remove() implementation for Windows Vista and newer
-inline bool remove_nt6_impl(path const& p, remove_impl_type impl, error_code* ec)
-{
-    handle_wrapper h(create_file_handle(
-        p,
-        DELETE | FILE_READ_ATTRIBUTES | FILE_READ_EA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA,
-        FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT));
-    DWORD err = 0u;
-    if (BOOST_UNLIKELY(h.handle == INVALID_HANDLE_VALUE))
-    {
-        err = ::GetLastError();
-
-    return_error:
-        if (!not_found_error(err))
-            emit_error(err, p, ec, "boost::filesystem::remove");
-
-        return false;
-    }
-
-    err = fs::detail::remove_nt6_by_handle(h.handle, impl);
-    if (BOOST_UNLIKELY(err != 0u))
-        goto return_error;
-
-    return true;
-}
-
-//! remove() implementation
-inline bool remove_impl(path const& p, error_code* ec)
-{
-    remove_impl_type impl = fs::detail::atomic_load_relaxed(g_remove_impl_type);
-    if (BOOST_LIKELY(impl != remove_nt5))
-    {
-        return fs::detail::remove_nt6_impl(p, impl, ec);
-    }
-    else
-    {
-        const DWORD attrs = ::GetFileAttributesW(p.c_str());
-        if (BOOST_UNLIKELY(attrs == INVALID_FILE_ATTRIBUTES))
-        {
-            DWORD err = ::GetLastError();
-            if (!not_found_error(err))
-                emit_error(err, p, ec, "boost::filesystem::remove");
-
-            return false;
-        }
-
-        return fs::detail::remove_nt5_impl(p, attrs, ec);
-    }
-}
-
-#if !defined(UNDER_CE)
-
-//! remove_all() by handle implementation for Windows Vista and newer
-uintmax_t remove_all_nt6_by_handle(HANDLE h, path const& p, error_code* ec)
-{
-    error_code local_ec;
-    fs::file_status st(fs::detail::status_by_handle(h, p, &local_ec));
-    if (BOOST_UNLIKELY(st.type() == fs::status_error))
-    {
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all", p, local_ec));
-
-        *ec = local_ec;
-        return static_cast< uintmax_t >(-1);
-    }
-
-    uintmax_t count = 0u;
-    if (st.type() == fs::directory_file)
-    {
-        local_ec.clear();
-
-        fs::directory_iterator itr;
-        directory_iterator_params params;
-        params.use_handle = h;
-        params.close_handle = false; // the caller will close the handle
-        fs::detail::directory_iterator_construct(itr, p, static_cast< unsigned int >(directory_options::_detail_no_follow), &params, &local_ec);
-        if (BOOST_UNLIKELY(!!local_ec))
-        {
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all", p, local_ec));
-
-            *ec = local_ec;
-            return static_cast< uintmax_t >(-1);
-        }
-
-        NtCreateFile_t* nt_create_file = filesystem::detail::atomic_load_relaxed(nt_create_file_api);
-        const fs::directory_iterator end_dit;
-        while (itr != end_dit)
-        {
-            fs::path nested_path(itr->path());
-            handle_wrapper hh;
-            if (BOOST_LIKELY(nt_create_file != NULL))
-            {
-                // Note: WinAPI methods like CreateFileW implicitly request SYNCHRONIZE access but NtCreateFile doesn't.
-                // Without SYNCHRONIZE access querying file attributes via GetFileInformationByHandleEx fails with ERROR_ACCESS_DENIED.
-                boost::winapi::NTSTATUS_ status = nt_create_file_handle_at
-                (
-                    hh.handle,
-                    h,
-                    path_algorithms::filename_v4(nested_path),
-                    0u, // FileAttributes
-                    FILE_LIST_DIRECTORY | DELETE | FILE_READ_ATTRIBUTES | FILE_READ_EA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | SYNCHRONIZE,
-                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
-                    FILE_OPEN,
-                    FILE_SYNCHRONOUS_IO_NONALERT | FILE_OPEN_FOR_BACKUP_INTENT | FILE_OPEN_REPARSE_POINT
-                );
-
-                if (!NT_SUCCESS(status))
-                {
-                    if (status == STATUS_NO_SUCH_FILE ||
-                        status == STATUS_OBJECT_NAME_NOT_FOUND ||
-                        status == STATUS_OBJECT_PATH_NOT_FOUND ||
-                        status == STATUS_BAD_NETWORK_PATH ||
-                        status == STATUS_BAD_NETWORK_NAME)
-                    {
-                        goto next_entry;
-                    }
-
-                    DWORD err = translate_ntstatus(status);
-                    emit_error(err, nested_path, ec, "boost::filesystem::remove_all");
-                    return static_cast< uintmax_t >(-1);
-                }
-            }
-            else
-            {
-                hh.handle = create_file_handle(
-                    nested_path,
-                    FILE_LIST_DIRECTORY | DELETE | FILE_READ_ATTRIBUTES | FILE_READ_EA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | SYNCHRONIZE,
-                    FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
-                    NULL,
-                    OPEN_EXISTING,
-                    FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT);
-
-                if (BOOST_UNLIKELY(hh.handle == INVALID_HANDLE_VALUE))
-                {
-                    DWORD err = ::GetLastError();
-                    if (not_found_error(err))
-                        goto next_entry;
-
-                    emit_error(err, nested_path, ec, "boost::filesystem::remove_all");
-                    return static_cast< uintmax_t >(-1);
-                }
-            }
-
-            count += fs::detail::remove_all_nt6_by_handle(hh.handle, nested_path, ec);
-            if (ec && *ec)
-                return static_cast< uintmax_t >(-1);
-
-        next_entry:
-            fs::detail::directory_iterator_increment(itr, ec);
-            if (ec && *ec)
-                return static_cast< uintmax_t >(-1);
-        }
-    }
-
-    DWORD err = fs::detail::remove_nt6_by_handle(h, fs::detail::atomic_load_relaxed(g_remove_impl_type));
-    if (BOOST_UNLIKELY(err != 0u))
-    {
-        emit_error(err, p, ec, "boost::filesystem::remove_all");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    ++count;
-    return count;
-}
-
-#endif // !defined(UNDER_CE)
-
-//! remove_all() implementation for Windows XP and older
-uintmax_t remove_all_nt5_impl(path const& p, error_code* ec)
-{
-    error_code dit_create_ec;
-    for (unsigned int attempt = 0u; attempt < remove_all_directory_replaced_retry_count; ++attempt)
-    {
-        const DWORD attrs = ::GetFileAttributesW(p.c_str());
-        if (BOOST_UNLIKELY(attrs == INVALID_FILE_ATTRIBUTES))
-        {
-            DWORD err = ::GetLastError();
-            if (not_found_error(err))
-                return 0u;
-
-            emit_error(err, p, ec, "boost::filesystem::remove_all");
-            return static_cast< uintmax_t >(-1);
-        }
-
-        // Recurse into directories, but not into junctions or directory symlinks
-        const bool recurse = (attrs & FILE_ATTRIBUTE_DIRECTORY) != 0 && (attrs & FILE_ATTRIBUTE_REPARSE_POINT) == 0;
-        uintmax_t count = 0u;
-        if (recurse)
-        {
-            fs::directory_iterator itr;
-            fs::detail::directory_iterator_construct(itr, p, static_cast< unsigned int >(directory_options::_detail_no_follow), NULL, &dit_create_ec);
-            if (BOOST_UNLIKELY(!!dit_create_ec))
-            {
-                if (dit_create_ec == make_error_condition(system::errc::not_a_directory) ||
-                    dit_create_ec == make_error_condition(system::errc::too_many_symbolic_link_levels))
-                {
-                    continue;
-                }
-
-                if (!ec)
-                    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all", p, dit_create_ec));
-
-                *ec = dit_create_ec;
-                return static_cast< uintmax_t >(-1);
-            }
-
-            const fs::directory_iterator end_dit;
-            while (itr != end_dit)
-            {
-                count += fs::detail::remove_all_nt5_impl(itr->path(), ec);
-                if (ec && *ec)
-                    return static_cast< uintmax_t >(-1);
-
-                fs::detail::directory_iterator_increment(itr, ec);
-                if (ec && *ec)
-                    return static_cast< uintmax_t >(-1);
-            }
-        }
-
-        bool removed = fs::detail::remove_nt5_impl(p, attrs, ec);
-        if (ec && *ec)
-            return static_cast< uintmax_t >(-1);
-
-        count += removed;
-        return count;
-    }
-
-    if (!ec)
-        BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::remove_all: path cannot be opened as a directory", p, dit_create_ec));
-
-    *ec = dit_create_ec;
-    return static_cast< uintmax_t >(-1);
-}
-
-//! remove_all() implementation
-inline uintmax_t remove_all_impl(path const& p, error_code* ec)
-{
-#if !defined(UNDER_CE)
-    remove_impl_type impl = fs::detail::atomic_load_relaxed(g_remove_impl_type);
-    if (BOOST_LIKELY(impl != remove_nt5))
-    {
-        handle_wrapper h(create_file_handle(
-            p,
-            FILE_LIST_DIRECTORY | DELETE | FILE_READ_ATTRIBUTES | FILE_READ_EA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | SYNCHRONIZE,
-            FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
-            NULL,
-            OPEN_EXISTING,
-            FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT));
-
-        if (BOOST_UNLIKELY(h.handle == INVALID_HANDLE_VALUE))
-        {
-            DWORD err = ::GetLastError();
-            if (not_found_error(err))
-                return 0u;
-
-            emit_error(err, p, ec, "boost::filesystem::remove_all");
-            return static_cast< uintmax_t >(-1);
-        }
-
-        return fs::detail::remove_all_nt6_by_handle(h.handle, p, ec);
-    }
-#endif // !defined(UNDER_CE)
-
-    return fs::detail::remove_all_nt5_impl(p, ec);
-}
-
-inline BOOL resize_file_impl(const wchar_t* p, uintmax_t size)
-{
-    handle_wrapper h(CreateFileW(p, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL));
-    LARGE_INTEGER sz;
-    sz.QuadPart = size;
-    return h.handle != INVALID_HANDLE_VALUE && ::SetFilePointerEx(h.handle, sz, 0, FILE_BEGIN) && ::SetEndOfFile(h.handle);
-}
-
-//! Converts NT path to a Win32 path
-inline path convert_nt_path_to_win32_path(const wchar_t* nt_path, std::size_t size)
-{
-    // https://googleprojectzero.blogspot.com/2016/02/the-definitive-guide-on-win32-to-nt.html
-    // https://stackoverflow.com/questions/23041983/path-prefixes-and
-    //
-    // NT paths can be used to identify practically any named objects, devices, files, local and remote shares, etc.
-    // The path starts with a leading backslash and consists of one or more path elements separated with backslashes.
-    // The set of characters allowed in NT path elements is significantly larger than that of Win32 paths - basically,
-    // any character except the backslash is allowed. Path elements are case-insensitive.
-    //
-    // NT paths that start with the "\??\" prefix are used to indicate the current user's session namespace. The prefix
-    // indicates to the NT object manager to lookup the object relative to "\Sessions\0\DosDevices\[Logon Authentication ID]".
-    //
-    // There is also a special "\Global??\" prefix that refers to the system logon. User's session directory shadows
-    // the system logon directory, so that when the referenced object is not found in the user's namespace,
-    // system logon is looked up instead.
-    //
-    // There is a symlink "Global" in the user's session namespace that refers to the global namespace, so "\??\Global"
-    // effectively resolves to "\Global??". This allows Win32 applications to directly refer to the system objects,
-    // even if shadowed by the current user's logon object.
-    //
-    // NT paths can be used to reference not only local filesystems, but also devices and remote shares identifiable via
-    // UNC paths. For this, there is a special "UNC" device (which is a symlink to "\Device\Mup") in the system logon
-    // namespace, so "\??\UNC\host\share" (or "\??\Global\UNC\host\share", or "\Global??\UNC\host\share") is equivalent
-    // to "\\host\share".
-    //
-    // NT paths are not universally accepted by Win32 applications and APIs. For example, Far supports paths starting
-    // with "\??\" and "\??\Global\" but not with "\Global??\". As of Win10 21H1, File Explorer, cmd.exe and PowerShell
-    // don't support any of these. Given this, and that NT paths have a different set of allowed characters from Win32 paths,
-    // we should normally avoid exposing NT paths to users that expect Win32 paths.
-    //
-    // In Boost.Filesystem we only deal with NT paths that come from reparse points, such as symlinks and mount points,
-    // including directory junctions. It was observed that reparse points created by junction.exe and mklink use the "\??\"
-    // prefix for directory junctions and absolute symlink and unqualified relative path for relative symlinks.
-    // Absolute paths are using drive letters for mounted drives (e.g. "\??\C:\directory"), although it is possible
-    // to create a junction to an directory using a different way of identifying the filesystem (e.g.
-    // "\??\Volume{00000000-0000-0000-0000-000000000000}\directory").
-    // mklink does not support creating junctions pointing to a UNC path. junction.exe does create a junction that
-    // uses a seemingly invalid syntax like "\??\\\host\share", i.e. it basically does not expect an UNC path. It is not known
-    // if reparse points that refer to a UNC path are considered valid.
-    // There are reparse points created as mount points for local and remote filsystems (for example, a cloud storage mounted
-    // in the local filesystem). Such mount points have the form of "\??\Volume{00000000-0000-0000-0000-000000000000}\",
-    // "\??\Harddisk0Partition1\" or "\??\HarddiskVolume1\".
-    // Reparse points that refer directly to a global namespace (through "\??\Global\" or "\Global??\" prefixes) or
-    // devices (e.g. "\Device\HarddiskVolume1") have not been observed so far.
-
-    path win32_path;
-    std::size_t pos = 0u;
-    bool global_namespace = false;
-
-    // Check for the "\??\" prefix
-    if (size >= 4u &&
-        nt_path[0] == path::preferred_separator &&
-        nt_path[1] == questionmark &&
-        nt_path[2] == questionmark &&
-        nt_path[3] == path::preferred_separator)
-    {
-        pos = 4u;
-
-        // Check "Global"
-        if ((size - pos) >= 6u &&
-            (nt_path[pos] == L'G' || nt_path[pos] == L'g') &&
-            (nt_path[pos + 1] == L'l' || nt_path[pos + 1] == L'L') &&
-            (nt_path[pos + 2] == L'o' || nt_path[pos + 2] == L'O') &&
-            (nt_path[pos + 3] == L'b' || nt_path[pos + 3] == L'B') &&
-            (nt_path[pos + 4] == L'a' || nt_path[pos + 4] == L'A') &&
-            (nt_path[pos + 5] == L'l' || nt_path[pos + 5] == L'L'))
-        {
-            if ((size - pos) == 6u)
-            {
-                pos += 6u;
-                global_namespace = true;
-            }
-            else if (detail::is_directory_separator(nt_path[pos + 6u]))
-            {
-                pos += 7u;
-                global_namespace = true;
-            }
-        }
-    }
-    // Check for the "\Global??\" prefix
-    else if (size >= 10u &&
-        nt_path[0] == path::preferred_separator &&
-        (nt_path[1] == L'G' || nt_path[1] == L'g') &&
-        (nt_path[2] == L'l' || nt_path[2] == L'L') &&
-        (nt_path[3] == L'o' || nt_path[3] == L'O') &&
-        (nt_path[4] == L'b' || nt_path[4] == L'B') &&
-        (nt_path[5] == L'a' || nt_path[5] == L'A') &&
-        (nt_path[6] == L'l' || nt_path[6] == L'L') &&
-        nt_path[7] == questionmark &&
-        nt_path[8] == questionmark &&
-        nt_path[9] == path::preferred_separator)
-    {
-        pos = 10u;
-        global_namespace = true;
-    }
-
-    if (pos > 0u)
-    {
-        if ((size - pos) >= 2u &&
-        (
-            // Check if the following is a drive letter
-            (
-                detail::is_letter(nt_path[pos]) && nt_path[pos + 1u] == colon &&
-                ((size - pos) == 2u || detail::is_directory_separator(nt_path[pos + 2u]))
-            ) ||
-            // Check for an "incorrect" syntax for UNC path junction points
-            (
-                detail::is_directory_separator(nt_path[pos]) && detail::is_directory_separator(nt_path[pos + 1u]) &&
-                ((size - pos) == 2u || !detail::is_directory_separator(nt_path[pos + 2u]))
-            )
-        ))
-        {
-            // Strip the NT path prefix
-            goto done;
-        }
-
-        static const wchar_t win32_path_prefix[4u] = { path::preferred_separator, path::preferred_separator, questionmark, path::preferred_separator };
-
-        // Check for a UNC path
-        if ((size - pos) >= 4u &&
-            (nt_path[pos] == L'U' || nt_path[pos] == L'u') &&
-            (nt_path[pos + 1] == L'N' || nt_path[pos + 1] == L'n') &&
-            (nt_path[pos + 2] == L'C' || nt_path[pos + 2] == L'c') &&
-            nt_path[pos + 3] == path::preferred_separator)
-        {
-            win32_path.assign(win32_path_prefix, win32_path_prefix + 2);
-            pos += 4u;
-            goto done;
-        }
-
-        // This is some other NT path, possibly a volume mount point. Replace the NT prefix with a Win32 filesystem prefix "\\?\".
-        win32_path.assign(win32_path_prefix, win32_path_prefix + 4);
-        if (global_namespace)
-        {
-            static const wchar_t win32_path_global_prefix[7u] = { L'G', L'l', L'o', L'b', L'a', L'l', path::preferred_separator };
-            win32_path.concat(win32_path_global_prefix, win32_path_global_prefix + 7);
-        }
-    }
-
-done:
-    win32_path.concat(nt_path + pos, nt_path + size);
-    return win32_path;
-}
-
-#endif // defined(BOOST_POSIX_API)
-
-} // unnamed namespace
-} // namespace detail
-
-//--------------------------------------------------------------------------------------//
-//                                                                                      //
-//                operations functions declared in operations.hpp                       //
-//                                                                                      //
-//--------------------------------------------------------------------------------------//
-
-namespace detail {
-
-BOOST_FILESYSTEM_DECL bool possible_large_file_size_support()
-{
-#ifdef BOOST_POSIX_API
-    typedef struct stat struct_stat;
-    return sizeof(struct_stat().st_size) > 4;
-#else
-    return true;
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-path absolute(path const& p, path const& base, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    if (p.is_absolute())
-        return p;
-
-    //  recursively calling absolute is sub-optimal, but is sure and simple
-    path abs_base = base;
-    if (!base.is_absolute())
-    {
-        if (ec)
-        {
-            abs_base = absolute(base, *ec);
-            if (*ec)
-                return path();
-        }
-        else
-        {
-            abs_base = absolute(base);
-        }
-    }
-
-    if (p.empty())
-        return abs_base;
-
-    path res;
-    if (p.has_root_name())
-        res = p.root_name();
-    else
-        res = abs_base.root_name();
-
-    if (p.has_root_directory())
-    {
-        res.concat(p.root_directory());
-    }
-    else
-    {
-        res.concat(abs_base.root_directory());
-        path_algorithms::append_v4(res, abs_base.relative_path());
-    }
-
-    path p_relative_path(p.relative_path());
-    if (!p_relative_path.empty())
-        path_algorithms::append_v4(res, p_relative_path);
-
-    return res;
-}
-
-BOOST_FILESYSTEM_DECL
-path canonical(path const& p, path const& base, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    path source(p);
-    if (!p.is_absolute())
-    {
-        source = detail::absolute(p, base, ec);
-        if (ec && *ec)
-        {
-        return_empty_path:
-            return path();
-        }
-    }
-
-    system::error_code local_ec;
-    file_status st(detail::status_impl(source, &local_ec));
-
-    if (st.type() == fs::file_not_found)
-    {
-        local_ec = system::errc::make_error_code(system::errc::no_such_file_or_directory);
-        goto fail_local_ec;
-    }
-    else if (local_ec)
-    {
-    fail_local_ec:
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::canonical", source, local_ec));
-
-        *ec = local_ec;
-        goto return_empty_path;
-    }
-
-    path root(source.root_path());
-    path const& dot_p = dot_path();
-    path const& dot_dot_p = dot_dot_path();
-    unsigned int symlinks_allowed = symloop_max;
-    path result;
-    while (true)
-    {
-        for (path::iterator itr(source.begin()), end(source.end()); itr != end; path_algorithms::increment_v4(itr))
-        {
-            if (path_algorithms::compare_v4(*itr, dot_p) == 0)
-                continue;
-            if (path_algorithms::compare_v4(*itr, dot_dot_p) == 0)
-            {
-                if (path_algorithms::compare_v4(result, root) != 0)
-                    result.remove_filename_and_trailing_separators();
-                continue;
-            }
-
-            if (itr->size() == 1u && detail::is_directory_separator(itr->native()[0]))
-            {
-                // Convert generic separator returned by the iterator for the root directory to
-                // the preferred separator. This is important on Windows, as in some cases,
-                // like paths for network shares and cloud storage mount points GetFileAttributesW
-                // will return "file not found" if the path contains forward slashes.
-                result += path::preferred_separator;
-                // We don't need to check for a symlink after adding a separator.
-                continue;
-            }
-
-            path_algorithms::append_v4(result, *itr);
-
-            // If we don't have an absolute path yet then don't check symlink status.
-            // This avoids checking "C:" which is "the current directory on drive C"
-            // and hence not what we want to check/resolve here.
-            if (!result.is_absolute())
-                continue;
-
-            st = detail::symlink_status_impl(result, ec);
-            if (ec && *ec)
-                goto return_empty_path;
-
-            if (is_symlink(st))
-            {
-                if (symlinks_allowed == 0)
-                {
-                    local_ec = system::errc::make_error_code(system::errc::too_many_symbolic_link_levels);
-                    goto fail_local_ec;
-                }
-
-                --symlinks_allowed;
-
-                path link(detail::read_symlink(result, ec));
-                if (ec && *ec)
-                    goto return_empty_path;
-                result.remove_filename_and_trailing_separators();
-
-                if (link.is_absolute())
-                {
-                    for (path_algorithms::increment_v4(itr); itr != end; path_algorithms::increment_v4(itr))
-                    {
-                        if (path_algorithms::compare_v4(*itr, dot_p) != 0)
-                            path_algorithms::append_v4(link, *itr);
-                    }
-                    source = link;
-                    root = source.root_path();
-                }
-                else // link is relative
-                {
-                    link.remove_trailing_separator();
-                    if (path_algorithms::compare_v4(link, dot_p) == 0)
-                        continue;
-
-                    path new_source(result);
-                    path_algorithms::append_v4(new_source, link);
-                    for (path_algorithms::increment_v4(itr); itr != end; path_algorithms::increment_v4(itr))
-                    {
-                        if (path_algorithms::compare_v4(*itr, dot_p) != 0)
-                            path_algorithms::append_v4(new_source, *itr);
-                    }
-                    source = new_source;
-                }
-
-                // symlink causes scan to be restarted
-                goto restart_scan;
-            }
-        }
-
-        break;
-
-    restart_scan:
-        result.clear();
-    }
-
-    BOOST_ASSERT_MSG(result.is_absolute(), "canonical() implementation error; please report");
-    return result;
-}
-
-BOOST_FILESYSTEM_DECL
-void copy(path const& from, path const& to, unsigned int options, system::error_code* ec)
-{
-    BOOST_ASSERT((((options & static_cast< unsigned int >(copy_options::overwrite_existing)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::skip_existing)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::update_existing)) != 0u)) <= 1);
-
-    BOOST_ASSERT((((options & static_cast< unsigned int >(copy_options::copy_symlinks)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::skip_symlinks)) != 0u)) <= 1);
-
-    BOOST_ASSERT((((options & static_cast< unsigned int >(copy_options::directories_only)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::create_symlinks)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::create_hard_links)) != 0u)) <= 1);
-
-    if (ec)
-        ec->clear();
-
-    file_status from_stat;
-    if ((options & (static_cast< unsigned int >(copy_options::copy_symlinks) |
-        static_cast< unsigned int >(copy_options::skip_symlinks) |
-        static_cast< unsigned int >(copy_options::create_symlinks))) != 0u)
-    {
-        from_stat = detail::symlink_status_impl(from, ec);
-    }
-    else
-    {
-        from_stat = detail::status_impl(from, ec);
-    }
-
-    if (ec && *ec)
-        return;
-
-    if (!exists(from_stat))
-    {
-        emit_error(BOOST_ERROR_FILE_NOT_FOUND, from, to, ec, "boost::filesystem::copy");
-        return;
-    }
-
-    if (is_symlink(from_stat))
-    {
-        if ((options & static_cast< unsigned int >(copy_options::skip_symlinks)) != 0u)
-            return;
-
-        if ((options & static_cast< unsigned int >(copy_options::copy_symlinks)) == 0u)
-            goto fail;
-
-        detail::copy_symlink(from, to, ec);
-    }
-    else if (is_regular_file(from_stat))
-    {
-        if ((options & static_cast< unsigned int >(copy_options::directories_only)) != 0u)
-            return;
-
-        if ((options & static_cast< unsigned int >(copy_options::create_symlinks)) != 0u)
-        {
-            const path* pfrom = &from;
-            path relative_from;
-            if (!from.is_absolute())
-            {
-                // Try to generate a relative path from the target location to the original file
-                path cur_dir = detail::current_path(ec);
-                if (ec && *ec)
-                    return;
-                path abs_from = detail::absolute(from.parent_path(), cur_dir, ec);
-                if (ec && *ec)
-                    return;
-                path abs_to = to.parent_path();
-                if (!abs_to.is_absolute())
-                {
-                    abs_to = detail::absolute(abs_to, cur_dir, ec);
-                    if (ec && *ec)
-                        return;
-                }
-                relative_from = detail::relative(abs_from, abs_to, ec);
-                if (ec && *ec)
-                    return;
-                if (path_algorithms::compare_v4(relative_from, dot_path()) != 0)
-                    path_algorithms::append_v4(relative_from, path_algorithms::filename_v4(from));
-                else
-                    relative_from = path_algorithms::filename_v4(from);
-                pfrom = &relative_from;
-            }
-            detail::create_symlink(*pfrom, to, ec);
-            return;
-        }
-
-        if ((options & static_cast< unsigned int >(copy_options::create_hard_links)) != 0u)
-        {
-            detail::create_hard_link(from, to, ec);
-            return;
-        }
-
-        error_code local_ec;
-        file_status to_stat;
-        if ((options & (static_cast< unsigned int >(copy_options::skip_symlinks) |
-            static_cast< unsigned int >(copy_options::create_symlinks))) != 0u)
-        {
-            to_stat = detail::symlink_status_impl(to, &local_ec);
-        }
-        else
-        {
-            to_stat = detail::status_impl(to, &local_ec);
-        }
-
-        // Note: local_ec may be set by (symlink_)status() even in some non-fatal situations, e.g. when the file does not exist.
-        //       OTOH, when it returns status_error, then a real error have happened and it must have set local_ec.
-        if (to_stat.type() == fs::status_error)
-        {
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::copy", from, to, local_ec));
-            *ec = local_ec;
-            return;
-        }
-
-        if (is_directory(to_stat))
-        {
-            path target(to);
-            path_algorithms::append_v4(target, path_algorithms::filename_v4(from));
-            detail::copy_file(from, target, options, ec);
-        }
-        else
-            detail::copy_file(from, to, options, ec);
-    }
-    else if (is_directory(from_stat))
-    {
-        error_code local_ec;
-        if ((options & static_cast< unsigned int >(copy_options::create_symlinks)) != 0u)
-        {
-            local_ec = make_error_code(system::errc::is_a_directory);
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::copy", from, to, local_ec));
-            *ec = local_ec;
-            return;
-        }
-
-        file_status to_stat;
-        if ((options & (static_cast< unsigned int >(copy_options::skip_symlinks) |
-            static_cast< unsigned int >(copy_options::create_symlinks))) != 0u)
-        {
-            to_stat = detail::symlink_status_impl(to, &local_ec);
-        }
-        else
-        {
-            to_stat = detail::status_impl(to, &local_ec);
-        }
-
-        // Note: ec may be set by (symlink_)status() even in some non-fatal situations, e.g. when the file does not exist.
-        //       OTOH, when it returns status_error, then a real error have happened and it must have set local_ec.
-        if (to_stat.type() == fs::status_error)
-        {
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::copy", from, to, local_ec));
-            *ec = local_ec;
-            return;
-        }
-
-        if (!exists(to_stat))
-        {
-            detail::create_directory(to, &from, ec);
-            if (ec && *ec)
-                return;
-        }
-
-        if ((options & static_cast< unsigned int >(copy_options::recursive)) != 0u || options == 0u)
-        {
-            fs::directory_iterator itr;
-            detail::directory_iterator_construct(itr, from, static_cast< unsigned int >(directory_options::none), NULL, ec);
-            if (ec && *ec)
-                return;
-
-            const fs::directory_iterator end_dit;
-            while (itr != end_dit)
-            {
-                path const& p = itr->path();
-                {
-                    path target(to);
-                    path_algorithms::append_v4(target, path_algorithms::filename_v4(p));
-                    // Set _detail_recursing flag so that we don't recurse more than for one level deeper into the directory if options are copy_options::none
-                    detail::copy(p, target, options | static_cast< unsigned int >(copy_options::_detail_recursing), ec);
-                }
-                if (ec && *ec)
-                    return;
-
-                detail::directory_iterator_increment(itr, ec);
-                if (ec && *ec)
-                    return;
-            }
-        }
-    }
-    else
-    {
-    fail:
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, from, to, ec, "boost::filesystem::copy");
-    }
-}
-
-BOOST_FILESYSTEM_DECL
-bool copy_file(path const& from, path const& to, unsigned int options, error_code* ec)
-{
-    BOOST_ASSERT((((options & static_cast< unsigned int >(copy_options::overwrite_existing)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::skip_existing)) != 0u) +
-        ((options & static_cast< unsigned int >(copy_options::update_existing)) != 0u)) <= 1);
-
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-    int err = 0;
-
-    // Note: Declare fd_wrappers here so that errno is not clobbered by close() that may be called in fd_wrapper destructors
-    fd_wrapper infile, outfile;
-
-    while (true)
-    {
-        infile.fd = ::open(from.c_str(), O_RDONLY | O_CLOEXEC);
-        if (BOOST_UNLIKELY(infile.fd < 0))
-        {
-            err = errno;
-            if (err == EINTR)
-                continue;
-
-        fail:
-            emit_error(err, from, to, ec, "boost::filesystem::copy_file");
-            return false;
-        }
-
-        break;
-    }
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    unsigned int statx_data_mask = STATX_TYPE | STATX_MODE | STATX_INO | STATX_SIZE;
-    if ((options & static_cast< unsigned int >(copy_options::update_existing)) != 0u)
-        statx_data_mask |= STATX_MTIME;
-
-    struct ::statx from_stat;
-    if (BOOST_UNLIKELY(invoke_statx(infile.fd, "", AT_EMPTY_PATH | AT_NO_AUTOMOUNT, statx_data_mask, &from_stat) < 0))
-    {
-    fail_errno:
-        err = errno;
-        goto fail;
-    }
-
-    if (BOOST_UNLIKELY((from_stat.stx_mask & statx_data_mask) != statx_data_mask))
-    {
-        err = ENOSYS;
-        goto fail;
-    }
-#else
-    struct ::stat from_stat;
-    if (BOOST_UNLIKELY(::fstat(infile.fd, &from_stat) != 0))
-    {
-    fail_errno:
-        err = errno;
-        goto fail;
-    }
-#endif
-
-    const mode_t from_mode = get_mode(from_stat);
-    if (BOOST_UNLIKELY(!S_ISREG(from_mode)))
-    {
-        err = ENOSYS;
-        goto fail;
-    }
-
-    mode_t to_mode = from_mode;
-#if !defined(BOOST_FILESYSTEM_USE_WASI)
-    // Enable writing for the newly created files. Having write permission set is important e.g. for NFS,
-    // which checks the file permission on the server, even if the client's file descriptor supports writing.
-    to_mode |= S_IWUSR;
-#endif
-    int oflag = O_WRONLY | O_CLOEXEC;
-
-    if ((options & static_cast< unsigned int >(copy_options::update_existing)) != 0u)
-    {
-        // Try opening the existing file without truncation to test the modification time later
-        while (true)
-        {
-            outfile.fd = ::open(to.c_str(), oflag, to_mode);
-            if (outfile.fd < 0)
-            {
-                err = errno;
-                if (err == EINTR)
-                    continue;
-
-                if (err == ENOENT)
-                    goto create_outfile;
-
-                goto fail;
-            }
-
-            break;
-        }
-    }
-    else
-    {
-    create_outfile:
-        oflag |= O_CREAT | O_TRUNC;
-        if (((options & static_cast< unsigned int >(copy_options::overwrite_existing)) == 0u ||
-             (options & static_cast< unsigned int >(copy_options::skip_existing)) != 0u) &&
-            (options & static_cast< unsigned int >(copy_options::update_existing)) == 0u)
-        {
-            oflag |= O_EXCL;
-        }
-
-        while (true)
-        {
-            outfile.fd = ::open(to.c_str(), oflag, to_mode);
-            if (outfile.fd < 0)
-            {
-                err = errno;
-                if (err == EINTR)
-                    continue;
-
-                if (err == EEXIST && (options & static_cast< unsigned int >(copy_options::skip_existing)) != 0u)
-                    return false;
-
-                goto fail;
-            }
-
-            break;
-        }
-    }
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    statx_data_mask = STATX_TYPE | STATX_MODE | STATX_INO;
-    if ((oflag & O_TRUNC) == 0)
-    {
-        // O_TRUNC is not set if copy_options::update_existing is set and an existing file was opened.
-        statx_data_mask |= STATX_MTIME;
-    }
-
-    struct ::statx to_stat;
-    if (BOOST_UNLIKELY(invoke_statx(outfile.fd, "", AT_EMPTY_PATH | AT_NO_AUTOMOUNT, statx_data_mask, &to_stat) < 0))
-        goto fail_errno;
-
-    if (BOOST_UNLIKELY((to_stat.stx_mask & statx_data_mask) != statx_data_mask))
-    {
-        err = ENOSYS;
-        goto fail;
-    }
-#else
-    struct ::stat to_stat;
-    if (BOOST_UNLIKELY(::fstat(outfile.fd, &to_stat) != 0))
-        goto fail_errno;
-#endif
-
-    to_mode = get_mode(to_stat);
-    if (BOOST_UNLIKELY(!S_ISREG(to_mode)))
-    {
-        err = ENOSYS;
-        goto fail;
-    }
-
-    if (BOOST_UNLIKELY(detail::equivalent_stat(from_stat, to_stat)))
-    {
-        err = EEXIST;
-        goto fail;
-    }
-
-    if ((oflag & O_TRUNC) == 0)
-    {
-        // O_TRUNC is not set if copy_options::update_existing is set and an existing file was opened.
-        // We need to check the last write times.
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-        if (from_stat.stx_mtime.tv_sec < to_stat.stx_mtime.tv_sec || (from_stat.stx_mtime.tv_sec == to_stat.stx_mtime.tv_sec && from_stat.stx_mtime.tv_nsec <= to_stat.stx_mtime.tv_nsec))
-            return false;
-#elif defined(BOOST_FILESYSTEM_STAT_ST_MTIMENSEC)
-        // Modify time is available with nanosecond precision.
-        if (from_stat.st_mtime < to_stat.st_mtime || (from_stat.st_mtime == to_stat.st_mtime && from_stat.BOOST_FILESYSTEM_STAT_ST_MTIMENSEC <= to_stat.BOOST_FILESYSTEM_STAT_ST_MTIMENSEC))
-            return false;
-#else
-        if (from_stat.st_mtime <= to_stat.st_mtime)
-            return false;
-#endif
-
-        if (BOOST_UNLIKELY(::ftruncate(outfile.fd, 0) != 0))
-            goto fail_errno;
-    }
-
-    // Note: Use block size of the target file since it is most important for writing performance.
-    err = filesystem::detail::atomic_load_relaxed(filesystem::detail::copy_file_data)(infile.fd, outfile.fd, get_size(from_stat), get_blksize(to_stat));
-    if (BOOST_UNLIKELY(err != 0))
-        goto fail; // err already contains the error code
-
-#if !defined(BOOST_FILESYSTEM_USE_WASI)
-    // If we created a new file with an explicitly added S_IWUSR permission,
-    // we may need to update its mode bits to match the source file.
-    if (to_mode != from_mode)
-    {
-        if (BOOST_UNLIKELY(::fchmod(outfile.fd, from_mode) != 0))
-            goto fail_errno;
-    }
-#endif
-
-    if ((options & (static_cast< unsigned int >(copy_options::synchronize_data) | static_cast< unsigned int >(copy_options::synchronize))) != 0u)
-    {
-        if ((options & static_cast< unsigned int >(copy_options::synchronize)) != 0u)
-            err = full_sync(outfile.fd);
-        else
-            err = data_sync(outfile.fd);
-
-        if (BOOST_UNLIKELY(err != 0))
-            goto fail;
-    }
-
-    // We have to explicitly close the output file descriptor in order to handle a possible error returned from it. The error may indicate
-    // a failure of a prior write operation.
-    err = close_fd(outfile.fd);
-    outfile.fd = -1;
-    if (BOOST_UNLIKELY(err < 0))
-    {
-        err = errno;
-        // EINPROGRESS is an allowed error code in future POSIX revisions, according to https://www.austingroupbugs.net/view.php?id=529#c1200.
-        if (err != EINTR && err != EINPROGRESS)
-            goto fail;
-    }
-
-    return true;
-
-#else // defined(BOOST_POSIX_API)
-
-    DWORD copy_flags = 0u;
-    if ((options & static_cast< unsigned int >(copy_options::overwrite_existing)) == 0u ||
-        (options & static_cast< unsigned int >(copy_options::skip_existing)) != 0u)
-    {
-        copy_flags |= COPY_FILE_FAIL_IF_EXISTS;
-    }
-
-    if ((options & static_cast< unsigned int >(copy_options::update_existing)) != 0u)
-    {
-        // Create handle_wrappers here so that CloseHandle calls don't clobber error code returned by GetLastError
-        handle_wrapper hw_from, hw_to;
-
-        // See the comment in last_write_time regarding access rights used here for GetFileTime.
-        hw_from.handle = create_file_handle(
-            from.c_str(),
-            FILE_READ_ATTRIBUTES | FILE_READ_EA,
-            FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-            NULL,
-            OPEN_EXISTING,
-            FILE_FLAG_BACKUP_SEMANTICS);
-
-        FILETIME lwt_from;
-        if (hw_from.handle == INVALID_HANDLE_VALUE)
-        {
-        fail_last_error:
-            DWORD err = ::GetLastError();
-            emit_error(err, from, to, ec, "boost::filesystem::copy_file");
-            return false;
-        }
-
-        if (!::GetFileTime(hw_from.handle, NULL, NULL, &lwt_from))
-            goto fail_last_error;
-
-        hw_to.handle = create_file_handle(
-            to.c_str(),
-            FILE_READ_ATTRIBUTES | FILE_READ_EA,
-            FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-            NULL,
-            OPEN_EXISTING,
-            FILE_FLAG_BACKUP_SEMANTICS);
-
-        if (hw_to.handle != INVALID_HANDLE_VALUE)
-        {
-            FILETIME lwt_to;
-            if (!::GetFileTime(hw_to.handle, NULL, NULL, &lwt_to))
-                goto fail_last_error;
-
-            ULONGLONG tfrom = (static_cast< ULONGLONG >(lwt_from.dwHighDateTime) << 32) | static_cast< ULONGLONG >(lwt_from.dwLowDateTime);
-            ULONGLONG tto = (static_cast< ULONGLONG >(lwt_to.dwHighDateTime) << 32) | static_cast< ULONGLONG >(lwt_to.dwLowDateTime);
-            if (tfrom <= tto)
-                return false;
-        }
-
-        copy_flags &= ~static_cast< DWORD >(COPY_FILE_FAIL_IF_EXISTS);
-    }
-
-    struct callback_context
-    {
-        DWORD flush_error;
-    };
-
-    struct local
-    {
-        //! Callback that is called to report progress of \c CopyFileExW
-        static DWORD WINAPI on_copy_file_progress(
-            LARGE_INTEGER total_file_size,
-            LARGE_INTEGER total_bytes_transferred,
-            LARGE_INTEGER stream_size,
-            LARGE_INTEGER stream_bytes_transferred,
-            DWORD stream_number,
-            DWORD callback_reason,
-            HANDLE from_handle,
-            HANDLE to_handle,
-            LPVOID ctx)
-        {
-            // For each stream, CopyFileExW will open a separate pair of file handles, so we need to flush each stream separately.
-            if (stream_bytes_transferred.QuadPart == stream_size.QuadPart)
-            {
-                BOOL res = ::FlushFileBuffers(to_handle);
-                if (BOOST_UNLIKELY(!res))
-                {
-                    callback_context* context = static_cast< callback_context* >(ctx);
-                    if (BOOST_LIKELY(context->flush_error == 0u))
-                        context->flush_error = ::GetLastError();
-                }
-            }
-
-            return PROGRESS_CONTINUE;
-        }
-    };
-
-    callback_context cb_context = {};
-    LPPROGRESS_ROUTINE cb = NULL;
-    LPVOID cb_ctx = NULL;
-
-    if ((options & (static_cast< unsigned int >(copy_options::synchronize_data) | static_cast< unsigned int >(copy_options::synchronize))) != 0u)
-    {
-        cb = &local::on_copy_file_progress;
-        cb_ctx = &cb_context;
-    }
-
-    BOOL cancelled = FALSE;
-    BOOL res = ::CopyFileExW(from.c_str(), to.c_str(), cb, cb_ctx, &cancelled, copy_flags);
-    DWORD err;
-    if (BOOST_UNLIKELY(!res))
-    {
-        err = ::GetLastError();
-        if ((err == ERROR_FILE_EXISTS || err == ERROR_ALREADY_EXISTS) && (options & static_cast< unsigned int >(copy_options::skip_existing)) != 0u)
-            return false;
-
-    copy_failed:
-        emit_error(err, from, to, ec, "boost::filesystem::copy_file");
-        return false;
-    }
-
-    if (BOOST_UNLIKELY(cb_context.flush_error != 0u))
-    {
-        err = cb_context.flush_error;
-        goto copy_failed;
-    }
-
-    return true;
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-void copy_symlink(path const& existing_symlink, path const& new_symlink, system::error_code* ec)
-{
-    path p(read_symlink(existing_symlink, ec));
-    if (ec && *ec)
-        return;
-    create_symlink(p, new_symlink, ec);
-}
-
-BOOST_FILESYSTEM_DECL
-bool create_directories(path const& p, system::error_code* ec)
-{
-    if (p.empty())
-    {
-        if (!ec)
-        {
-            BOOST_FILESYSTEM_THROW(filesystem_error(
-                "boost::filesystem::create_directories", p,
-                system::errc::make_error_code(system::errc::invalid_argument)));
-        }
-        ec->assign(system::errc::invalid_argument, system::generic_category());
-        return false;
-    }
-
-    if (ec)
-        ec->clear();
-
-    path::const_iterator e(p.end()), it(e);
-    path parent(p);
-    path const& dot_p = dot_path();
-    path const& dot_dot_p = dot_dot_path();
-    error_code local_ec;
-
-    // Find the initial part of the path that exists
-    for (path fname = path_algorithms::filename_v4(parent); parent.has_relative_path(); fname = path_algorithms::filename_v4(parent))
-    {
-        if (!fname.empty() && path_algorithms::compare_v4(fname, dot_p) != 0 && path_algorithms::compare_v4(fname, dot_dot_p) != 0)
-        {
-            file_status existing_status = detail::status_impl(parent, &local_ec);
-
-            if (existing_status.type() == directory_file)
-            {
-                break;
-            }
-            else if (BOOST_UNLIKELY(existing_status.type() == status_error))
-            {
-                if (!ec)
-                    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::create_directories", p, parent, local_ec));
-                *ec = local_ec;
-                return false;
-            }
-        }
-
-        path_algorithms::decrement_v4(it);
-        parent.remove_filename_and_trailing_separators();
-    }
-
-    // Create missing directories
-    bool created = false;
-    for (; it != e; path_algorithms::increment_v4(it))
-    {
-        path const& fname = *it;
-        path_algorithms::append_v4(parent, fname);
-        if (!fname.empty() && path_algorithms::compare_v4(fname, dot_p) != 0 && path_algorithms::compare_v4(fname, dot_dot_p) != 0)
-        {
-            created = detail::create_directory(parent, NULL, &local_ec);
-            if (BOOST_UNLIKELY(!!local_ec))
-            {
-                if (!ec)
-                    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::create_directories", p, parent, local_ec));
-                *ec = local_ec;
-                return false;
-            }
-        }
-    }
-
-    return created;
-}
-
-BOOST_FILESYSTEM_DECL
-bool create_directory(path const& p, const path* existing, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-    mode_t mode = S_IRWXU | S_IRWXG | S_IRWXO;
-    if (existing)
-    {
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-        struct ::statx existing_stat;
-        if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, existing->c_str(), AT_NO_AUTOMOUNT, STATX_TYPE | STATX_MODE, &existing_stat) < 0))
-        {
-            emit_error(errno, p, *existing, ec, "boost::filesystem::create_directory");
-            return false;
-        }
-
-        if (BOOST_UNLIKELY((existing_stat.stx_mask & (STATX_TYPE | STATX_MODE)) != (STATX_TYPE | STATX_MODE)))
-        {
-            emit_error(BOOST_ERROR_NOT_SUPPORTED, p, *existing, ec, "boost::filesystem::create_directory");
-            return false;
-        }
-#else
-        struct ::stat existing_stat;
-        if (::stat(existing->c_str(), &existing_stat) < 0)
-        {
-            emit_error(errno, p, *existing, ec, "boost::filesystem::create_directory");
-            return false;
-        }
-#endif
-
-        const mode_t existing_mode = get_mode(existing_stat);
-        if (!S_ISDIR(existing_mode))
-        {
-            emit_error(ENOTDIR, p, *existing, ec, "boost::filesystem::create_directory");
-            return false;
-        }
-
-        mode = existing_mode;
-    }
-
-    if (::mkdir(p.c_str(), mode) == 0)
-        return true;
-
-#else // defined(BOOST_POSIX_API)
-
-    BOOL res;
-    if (existing)
-        res = ::CreateDirectoryExW(existing->c_str(), p.c_str(), NULL);
-    else
-        res = ::CreateDirectoryW(p.c_str(), NULL);
-
-    if (res)
-        return true;
-
-#endif // defined(BOOST_POSIX_API)
-
-    //  attempt to create directory failed
-    err_t errval = BOOST_ERRNO; // save reason for failure
-    error_code dummy;
-
-    if (is_directory(p, dummy))
-        return false;
-
-    //  attempt to create directory failed && it doesn't already exist
-    emit_error(errval, p, ec, "boost::filesystem::create_directory");
-    return false;
-}
-
-// Deprecated, to be removed in a future release
-BOOST_FILESYSTEM_DECL
-void copy_directory(path const& from, path const& to, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    int err;
-    struct ::statx from_stat;
-    if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, from.c_str(), AT_NO_AUTOMOUNT, STATX_TYPE | STATX_MODE, &from_stat) < 0))
-    {
-    fail_errno:
-        err = errno;
-    fail:
-        emit_error(err, from, to, ec, "boost::filesystem::copy_directory");
-        return;
-    }
-
-    if (BOOST_UNLIKELY((from_stat.stx_mask & (STATX_TYPE | STATX_MODE)) != (STATX_TYPE | STATX_MODE)))
-    {
-        err = BOOST_ERROR_NOT_SUPPORTED;
-        goto fail;
-    }
-#else
-    struct ::stat from_stat;
-    if (BOOST_UNLIKELY(::stat(from.c_str(), &from_stat) < 0))
-    {
-    fail_errno:
-        emit_error(errno, from, to, ec, "boost::filesystem::copy_directory");
-        return;
-    }
-#endif
-
-    if (BOOST_UNLIKELY(::mkdir(to.c_str(), get_mode(from_stat)) < 0))
-        goto fail_errno;
-
-#else // defined(BOOST_POSIX_API)
-
-    if (BOOST_UNLIKELY(!::CreateDirectoryExW(from.c_str(), to.c_str(), 0)))
-        emit_error(BOOST_ERRNO, from, to, ec, "boost::filesystem::copy_directory");
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-void create_directory_symlink(path const& to, path const& from, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-    int err = ::symlink(to.c_str(), from.c_str());
-    if (BOOST_UNLIKELY(err < 0))
-    {
-        err = errno;
-        emit_error(err, to, from, ec, "boost::filesystem::create_directory_symlink");
-    }
-#else
-    // see if actually supported by Windows runtime dll
-    if (!create_symbolic_link_api)
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, to, from, ec, "boost::filesystem::create_directory_symlink");
-        return;
-    }
-
-    if (!create_symbolic_link_api(from.c_str(), to.c_str(), SYMBOLIC_LINK_FLAG_DIRECTORY | SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE))
-    {
-        emit_error(BOOST_ERRNO, to, from, ec, "boost::filesystem::create_directory_symlink");
-    }
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-void create_hard_link(path const& to, path const& from, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-    int err = ::link(to.c_str(), from.c_str());
-    if (BOOST_UNLIKELY(err < 0))
-    {
-        err = errno;
-        emit_error(err, to, from, ec, "boost::filesystem::create_hard_link");
-    }
-#else
-    // see if actually supported by Windows runtime dll
-    CreateHardLinkW_t* chl_api = filesystem::detail::atomic_load_relaxed(create_hard_link_api);
-    if (BOOST_UNLIKELY(!chl_api))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, to, from, ec, "boost::filesystem::create_hard_link");
-        return;
-    }
-
-    if (BOOST_UNLIKELY(!chl_api(from.c_str(), to.c_str(), NULL)))
-    {
-        emit_error(BOOST_ERRNO, to, from, ec, "boost::filesystem::create_hard_link");
-    }
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-void create_symlink(path const& to, path const& from, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-    int err = ::symlink(to.c_str(), from.c_str());
-    if (BOOST_UNLIKELY(err < 0))
-    {
-        err = errno;
-        emit_error(err, to, from, ec, "boost::filesystem::create_symlink");
-    }
-#else
-    // see if actually supported by Windows runtime dll
-    CreateSymbolicLinkW_t* csl_api = filesystem::detail::atomic_load_relaxed(create_symbolic_link_api);
-    if (BOOST_UNLIKELY(!csl_api))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, to, from, ec, "boost::filesystem::create_symlink");
-        return;
-    }
-
-    if (BOOST_UNLIKELY(!csl_api(from.c_str(), to.c_str(), SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE)))
-    {
-        emit_error(BOOST_ERRNO, to, from, ec, "boost::filesystem::create_symlink");
-    }
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-path current_path(error_code* ec)
-{
-#if defined(UNDER_CE) || defined(BOOST_FILESYSTEM_USE_WASI)
-    // Windows CE has no current directory, so everything's relative to the root of the directory tree.
-    // WASI also does not support current path.
-    emit_error(BOOST_ERROR_NOT_SUPPORTED, ec, "boost::filesystem::current_path");
-    return path();
-#elif defined(BOOST_POSIX_API)
-    struct local
-    {
-        static bool getcwd_error(error_code* ec)
-        {
-            const int err = errno;
-            return error((err != ERANGE
-#if defined(__MSL__) && (defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__))
-                          // bug in some versions of the Metrowerks C lib on the Mac: wrong errno set
-                          && err != 0
-#endif
-                          ) ? err : 0,
-                         ec, "boost::filesystem::current_path");
-        }
-    };
-
-    path cur;
-    char small_buf[small_path_size];
-    const char* p = ::getcwd(small_buf, sizeof(small_buf));
-    if (BOOST_LIKELY(!!p))
-    {
-        cur = p;
-        if (ec)
-            ec->clear();
-    }
-    else if (BOOST_LIKELY(!local::getcwd_error(ec)))
-    {
-        for (std::size_t path_max = sizeof(small_buf) * 2u;; path_max *= 2u) // loop 'til buffer large enough
-        {
-            if (BOOST_UNLIKELY(path_max > absolute_path_max))
-            {
-                emit_error(ENAMETOOLONG, ec, "boost::filesystem::current_path");
-                break;
-            }
-
-            boost::scoped_array< char > buf(new char[path_max]);
-            p = ::getcwd(buf.get(), path_max);
-            if (BOOST_LIKELY(!!p))
-            {
-                cur = buf.get();
-                if (ec)
-                    ec->clear();
-                break;
-            }
-            else if (BOOST_UNLIKELY(local::getcwd_error(ec)))
-            {
-                break;
-            }
-        }
-    }
-
-    return cur;
-#else
-    DWORD sz;
-    if ((sz = ::GetCurrentDirectoryW(0, NULL)) == 0)
-        sz = 1;
-    boost::scoped_array< path::value_type > buf(new path::value_type[sz]);
-    error(::GetCurrentDirectoryW(sz, buf.get()) == 0 ? BOOST_ERRNO : 0, ec, "boost::filesystem::current_path");
-    return path(buf.get());
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-void current_path(path const& p, system::error_code* ec)
-{
-#if defined(UNDER_CE) || defined(BOOST_FILESYSTEM_USE_WASI)
-    emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::current_path");
-#else
-    error(!BOOST_SET_CURRENT_DIRECTORY(p.c_str()) ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::current_path");
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-bool equivalent(path const& p1, path const& p2, system::error_code* ec)
-{
-#if defined(BOOST_POSIX_API)
-
-    // p2 is done first, so any error reported is for p1
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx s2;
-    int e2 = invoke_statx(AT_FDCWD, p2.c_str(), AT_NO_AUTOMOUNT, STATX_INO, &s2);
-    if (BOOST_LIKELY(e2 == 0))
-    {
-        if (BOOST_UNLIKELY((s2.stx_mask & STATX_INO) != STATX_INO))
-        {
-        fail_unsupported:
-            emit_error(BOOST_ERROR_NOT_SUPPORTED, p1, p2, ec, "boost::filesystem::equivalent");
-            return false;
-        }
-    }
-
-    struct ::statx s1;
-    int e1 = invoke_statx(AT_FDCWD, p1.c_str(), AT_NO_AUTOMOUNT, STATX_INO, &s1);
-    if (BOOST_LIKELY(e1 == 0))
-    {
-        if (BOOST_UNLIKELY((s1.stx_mask & STATX_INO) != STATX_INO))
-            goto fail_unsupported;
-    }
-#else
-    struct ::stat s2;
-    int e2 = ::stat(p2.c_str(), &s2);
-    struct ::stat s1;
-    int e1 = ::stat(p1.c_str(), &s1);
-#endif
-
-    if (BOOST_UNLIKELY(e1 != 0 || e2 != 0))
-    {
-        // if one is invalid and the other isn't then they aren't equivalent,
-        // but if both are invalid then it is an error
-        if (e1 != 0 && e2 != 0)
-            emit_error(errno, p1, p2, ec, "boost::filesystem::equivalent");
-        return false;
-    }
-
-    return equivalent_stat(s1, s2);
-
-#else // Windows
-
-    // Thanks to Jeremy Maitin-Shepard for much help and for permission to
-    // base the equivalent() implementation on portions of his
-    // file-equivalence-win32.cpp experimental code.
-
-    // Note well: Physical location on external media is part of the
-    // equivalence criteria. If there are no open handles, physical location
-    // can change due to defragmentation or other relocations. Thus handles
-    // must be held open until location information for both paths has
-    // been retrieved.
-
-    // p2 is done first, so any error reported is for p1
-    handle_wrapper h2(create_file_handle(
-        p2.c_str(),
-        FILE_READ_ATTRIBUTES,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS));
-
-    handle_wrapper h1(create_file_handle(
-        p1.c_str(),
-        FILE_READ_ATTRIBUTES,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS));
-
-    if (BOOST_UNLIKELY(h1.handle == INVALID_HANDLE_VALUE || h2.handle == INVALID_HANDLE_VALUE))
-    {
-        // if one is invalid and the other isn't, then they aren't equivalent,
-        // but if both are invalid then it is an error
-        if (h1.handle == INVALID_HANDLE_VALUE && h2.handle == INVALID_HANDLE_VALUE)
-            error(BOOST_ERRNO, p1, p2, ec, "boost::filesystem::equivalent");
-        return false;
-    }
-
-    // at this point, both handles are known to be valid
-
-    BY_HANDLE_FILE_INFORMATION info1, info2;
-
-    if (error(!::GetFileInformationByHandle(h1.handle, &info1) ? BOOST_ERRNO : 0, p1, p2, ec, "boost::filesystem::equivalent"))
-        return false;
-
-    if (error(!::GetFileInformationByHandle(h2.handle, &info2) ? BOOST_ERRNO : 0, p1, p2, ec, "boost::filesystem::equivalent"))
-        return false;
-
-    // In theory, volume serial numbers are sufficient to distinguish between
-    // devices, but in practice VSN's are sometimes duplicated, so last write
-    // time and file size are also checked.
-    return info1.dwVolumeSerialNumber == info2.dwVolumeSerialNumber &&
-        info1.nFileIndexHigh == info2.nFileIndexHigh &&
-        info1.nFileIndexLow == info2.nFileIndexLow &&
-        info1.nFileSizeHigh == info2.nFileSizeHigh &&
-        info1.nFileSizeLow == info2.nFileSizeLow &&
-        info1.ftLastWriteTime.dwLowDateTime == info2.ftLastWriteTime.dwLowDateTime &&
-        info1.ftLastWriteTime.dwHighDateTime == info2.ftLastWriteTime.dwHighDateTime;
-
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-uintmax_t file_size(path const& p, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx path_stat;
-    if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, p.c_str(), AT_NO_AUTOMOUNT, STATX_TYPE | STATX_SIZE, &path_stat) < 0))
-    {
-        emit_error(errno, p, ec, "boost::filesystem::file_size");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    if (BOOST_UNLIKELY((path_stat.stx_mask & (STATX_TYPE | STATX_SIZE)) != (STATX_TYPE | STATX_SIZE) || !S_ISREG(path_stat.stx_mode)))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::file_size");
-        return static_cast< uintmax_t >(-1);
-    }
-#else
-    struct ::stat path_stat;
-    if (BOOST_UNLIKELY(::stat(p.c_str(), &path_stat) < 0))
-    {
-        emit_error(errno, p, ec, "boost::filesystem::file_size");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    if (BOOST_UNLIKELY(!S_ISREG(path_stat.st_mode)))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::file_size");
-        return static_cast< uintmax_t >(-1);
-    }
-#endif
-
-    return get_size(path_stat);
-
-#else // defined(BOOST_POSIX_API)
-
-    // assume uintmax_t is 64-bits on all Windows compilers
-
-    WIN32_FILE_ATTRIBUTE_DATA fad;
-
-    if (BOOST_UNLIKELY(!::GetFileAttributesExW(p.c_str(), ::GetFileExInfoStandard, &fad)))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::file_size");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    if (BOOST_UNLIKELY((fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0))
-    {
-        emit_error(ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::file_size");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    return (static_cast< uintmax_t >(fad.nFileSizeHigh)
-            << (sizeof(fad.nFileSizeLow) * 8u)) |
-        fad.nFileSizeLow;
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-uintmax_t hard_link_count(path const& p, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx path_stat;
-    if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, p.c_str(), AT_NO_AUTOMOUNT, STATX_NLINK, &path_stat) < 0))
-    {
-        emit_error(errno, p, ec, "boost::filesystem::hard_link_count");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    if (BOOST_UNLIKELY((path_stat.stx_mask & STATX_NLINK) != STATX_NLINK))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::hard_link_count");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    return static_cast< uintmax_t >(path_stat.stx_nlink);
-#else
-    struct ::stat path_stat;
-    if (BOOST_UNLIKELY(::stat(p.c_str(), &path_stat) < 0))
-    {
-        emit_error(errno, p, ec, "boost::filesystem::hard_link_count");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    return static_cast< uintmax_t >(path_stat.st_nlink);
-#endif
-
-#else // defined(BOOST_POSIX_API)
-
-    handle_wrapper h(create_file_handle(
-        p.c_str(),
-        FILE_READ_ATTRIBUTES,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS));
-
-    if (BOOST_UNLIKELY(h.handle == INVALID_HANDLE_VALUE))
-    {
-    fail_errno:
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::hard_link_count");
-        return static_cast< uintmax_t >(-1);
-    }
-
-    // Link count info is only available through GetFileInformationByHandle
-    BY_HANDLE_FILE_INFORMATION info;
-    if (BOOST_UNLIKELY(!::GetFileInformationByHandle(h.handle, &info)))
-        goto fail_errno;
-
-    return static_cast< uintmax_t >(info.nNumberOfLinks);
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-path initial_path(error_code* ec)
-{
-    static path init_path;
-    if (init_path.empty())
-        init_path = current_path(ec);
-    else if (ec)
-        ec->clear();
-    return init_path;
-}
-
-BOOST_FILESYSTEM_DECL
-bool is_empty(path const& p, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx path_stat;
-    if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, p.c_str(), AT_NO_AUTOMOUNT, STATX_TYPE | STATX_SIZE, &path_stat) < 0))
-    {
-        emit_error(errno, p, ec, "boost::filesystem::is_empty");
-        return false;
-    }
-
-    if (BOOST_UNLIKELY((path_stat.stx_mask & STATX_TYPE) != STATX_TYPE))
-    {
-    fail_unsupported:
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::is_empty");
-        return false;
-    }
-
-    if (S_ISDIR(get_mode(path_stat)))
-        return is_empty_directory(p, ec);
-
-    if (BOOST_UNLIKELY((path_stat.stx_mask & STATX_SIZE) != STATX_SIZE))
-        goto fail_unsupported;
-
-    return get_size(path_stat) == 0u;
-#else
-    struct ::stat path_stat;
-    if (BOOST_UNLIKELY(::stat(p.c_str(), &path_stat) < 0))
-    {
-        emit_error(errno, p, ec, "boost::filesystem::is_empty");
-        return false;
-    }
-
-    return S_ISDIR(get_mode(path_stat)) ? is_empty_directory(p, ec) : get_size(path_stat) == 0u;
-#endif
-
-#else // defined(BOOST_POSIX_API)
-
-    WIN32_FILE_ATTRIBUTE_DATA fad;
-    if (BOOST_UNLIKELY(!::GetFileAttributesExW(p.c_str(), ::GetFileExInfoStandard, &fad)))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::is_empty");
-        return false;
-    }
-
-    return (fad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? is_empty_directory(p, ec) : (!fad.nFileSizeHigh && !fad.nFileSizeLow);
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-std::time_t creation_time(path const& p, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx stx;
-    if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, p.c_str(), AT_NO_AUTOMOUNT, STATX_BTIME, &stx) < 0))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::creation_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-    if (BOOST_UNLIKELY((stx.stx_mask & STATX_BTIME) != STATX_BTIME))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::creation_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-    return stx.stx_btime.tv_sec;
-#elif defined(BOOST_FILESYSTEM_STAT_ST_BIRTHTIME) && defined(BOOST_FILESYSTEM_STAT_ST_BIRTHTIMENSEC)
-    struct ::stat st;
-    if (BOOST_UNLIKELY(::stat(p.c_str(), &st) < 0))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::creation_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-    return st.BOOST_FILESYSTEM_STAT_ST_BIRTHTIME;
-#else
-    emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::creation_time");
-    return (std::numeric_limits< std::time_t >::min)();
-#endif
-
-#else // defined(BOOST_POSIX_API)
-
-    // See the comment in last_write_time regarding access rights used here for GetFileTime.
-    handle_wrapper hw(create_file_handle(
-        p.c_str(),
-        FILE_READ_ATTRIBUTES | FILE_READ_EA,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS));
-
-    if (BOOST_UNLIKELY(hw.handle == INVALID_HANDLE_VALUE))
-    {
-    fail:
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::creation_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-
-    FILETIME ct;
-    if (BOOST_UNLIKELY(!::GetFileTime(hw.handle, &ct, NULL, NULL)))
-        goto fail;
-
-    return to_time_t(ct);
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-std::time_t last_write_time(path const& p, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_USE_STATX)
-    struct ::statx stx;
-    if (BOOST_UNLIKELY(invoke_statx(AT_FDCWD, p.c_str(), AT_NO_AUTOMOUNT, STATX_MTIME, &stx) < 0))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-    if (BOOST_UNLIKELY((stx.stx_mask & STATX_MTIME) != STATX_MTIME))
-    {
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::last_write_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-    return stx.stx_mtime.tv_sec;
-#else
-    struct ::stat st;
-    if (BOOST_UNLIKELY(::stat(p.c_str(), &st) < 0))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-    return st.st_mtime;
-#endif
-
-#else // defined(BOOST_POSIX_API)
-
-    // GetFileTime is documented to require GENERIC_READ access right, but this causes problems if the file
-    // is opened by another process without FILE_SHARE_READ. In practice, FILE_READ_ATTRIBUTES works, and
-    // FILE_READ_EA is also added for good measure, in case if it matters for SMBv1.
-    handle_wrapper hw(create_file_handle(
-        p.c_str(),
-        FILE_READ_ATTRIBUTES | FILE_READ_EA,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS));
-
-    if (BOOST_UNLIKELY(hw.handle == INVALID_HANDLE_VALUE))
-    {
-    fail:
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-        return (std::numeric_limits< std::time_t >::min)();
-    }
-
-    FILETIME lwt;
-    if (BOOST_UNLIKELY(!::GetFileTime(hw.handle, NULL, NULL, &lwt)))
-        goto fail;
-
-    return to_time_t(lwt);
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-BOOST_FILESYSTEM_DECL
-void last_write_time(path const& p, const std::time_t new_time, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_POSIX_API)
-
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-
-    struct timespec times[2] = {};
-
-    // Keep the last access time unchanged
-    times[0].tv_nsec = UTIME_OMIT;
-
-    times[1].tv_sec = new_time;
-
-    if (BOOST_UNLIKELY(::utimensat(AT_FDCWD, p.c_str(), times, 0) != 0))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-        return;
-    }
-
-#else // defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-
-    struct ::stat st;
-    if (BOOST_UNLIKELY(::stat(p.c_str(), &st) < 0))
-    {
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-        return;
-    }
-
-    ::utimbuf buf;
-    buf.actime = st.st_atime; // utime() updates access time too :-(
-    buf.modtime = new_time;
-    if (BOOST_UNLIKELY(::utime(p.c_str(), &buf) < 0))
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-
-#endif // defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS)
-
-#else // defined(BOOST_POSIX_API)
-
-    handle_wrapper hw(create_file_handle(
-        p.c_str(),
-        FILE_WRITE_ATTRIBUTES,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS));
-
-    if (BOOST_UNLIKELY(hw.handle == INVALID_HANDLE_VALUE))
-    {
-    fail:
-        emit_error(BOOST_ERRNO, p, ec, "boost::filesystem::last_write_time");
-        return;
-    }
-
-    FILETIME lwt;
-    to_FILETIME(new_time, lwt);
-
-    if (BOOST_UNLIKELY(!::SetFileTime(hw.handle, NULL, NULL, &lwt)))
-        goto fail;
-
-#endif // defined(BOOST_POSIX_API)
-}
-
-#ifdef BOOST_POSIX_API
-const perms active_bits(all_all | set_uid_on_exe | set_gid_on_exe | sticky_bit);
-inline mode_t mode_cast(perms prms)
-{
-    return prms & active_bits;
-}
-#endif
-
-BOOST_FILESYSTEM_DECL
-void permissions(path const& p, perms prms, system::error_code* ec)
-{
-    BOOST_ASSERT_MSG(!((prms & add_perms) && (prms & remove_perms)), "add_perms and remove_perms are mutually exclusive");
-
-    if ((prms & add_perms) && (prms & remove_perms)) // precondition failed
-        return;
-
-#if defined(BOOST_FILESYSTEM_USE_WASI)
-    emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::permissions");
-#elif defined(BOOST_POSIX_API)
-    error_code local_ec;
-    file_status current_status((prms & symlink_perms) ? detail::symlink_status_impl(p, &local_ec) : detail::status_impl(p, &local_ec));
-    if (local_ec)
-    {
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::permissions", p, local_ec));
-
-        *ec = local_ec;
-        return;
-    }
-
-    if (prms & add_perms)
-        prms |= current_status.permissions();
-    else if (prms & remove_perms)
-        prms = current_status.permissions() & ~prms;
-
-    // OS X <10.10, iOS <8.0 and some other platforms don't support fchmodat().
-    // Solaris (SunPro and gcc) only support fchmodat() on Solaris 11 and higher,
-    // and a runtime check is too much trouble.
-    // Linux does not support permissions on symbolic links and has no plans to
-    // support them in the future.  The chmod() code is thus more practical,
-    // rather than always hitting ENOTSUP when sending in AT_SYMLINK_NO_FOLLOW.
-    //  - See the 3rd paragraph of
-    // "Symbolic link ownership, permissions, and timestamps" at:
-    //   "http://man7.org/linux/man-pages/man7/symlink.7.html"
-    //  - See the fchmodat() Linux man page:
-    //   "http://man7.org/linux/man-pages/man2/fchmodat.2.html"
-#if defined(BOOST_FILESYSTEM_HAS_POSIX_AT_APIS) && \
-    !(defined(__SUNPRO_CC) || defined(__sun) || defined(sun)) && \
-    !(defined(linux) || defined(__linux) || defined(__linux__)) && \
-    !(defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 101000) && \
-    !(defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 80000) && \
-    !(defined(__rtems__)) && \
-    !(defined(__QNX__) && (_NTO_VERSION <= 700))
-    if (::fchmodat(AT_FDCWD, p.c_str(), mode_cast(prms), !(prms & symlink_perms) ? 0 : AT_SYMLINK_NOFOLLOW))
-#else // fallback if fchmodat() not supported
-    if (::chmod(p.c_str(), mode_cast(prms)))
-#endif
-    {
-        const int err = errno;
-        if (!ec)
-        {
-            BOOST_FILESYSTEM_THROW(filesystem_error(
-                "boost::filesystem::permissions", p, error_code(err, system::generic_category())));
-        }
-
-        ec->assign(err, system::generic_category());
-    }
-
-#else // Windows
-
-    // if not going to alter FILE_ATTRIBUTE_READONLY, just return
-    if (!(!((prms & (add_perms | remove_perms))) || (prms & (owner_write | group_write | others_write))))
-        return;
-
-    DWORD attr = ::GetFileAttributesW(p.c_str());
-
-    if (error(attr == 0 ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::permissions"))
-        return;
-
-    if (prms & add_perms)
-        attr &= ~FILE_ATTRIBUTE_READONLY;
-    else if (prms & remove_perms)
-        attr |= FILE_ATTRIBUTE_READONLY;
-    else if (prms & (owner_write | group_write | others_write))
-        attr &= ~FILE_ATTRIBUTE_READONLY;
-    else
-        attr |= FILE_ATTRIBUTE_READONLY;
-
-    error(::SetFileAttributesW(p.c_str(), attr) == 0 ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::permissions");
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-path read_symlink(path const& p, system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    path symlink_path;
-
-#ifdef BOOST_POSIX_API
-    const char* const path_str = p.c_str();
-    char small_buf[small_path_size];
-    ssize_t result = ::readlink(path_str, small_buf, sizeof(small_buf));
-    if (BOOST_UNLIKELY(result < 0))
-    {
-    fail:
-        const int err = errno;
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::read_symlink", p, error_code(err, system_category())));
-
-        ec->assign(err, system_category());
-    }
-    else if (BOOST_LIKELY(static_cast< std::size_t >(result) < sizeof(small_buf)))
-    {
-        symlink_path.assign(small_buf, small_buf + result);
-    }
-    else
-    {
-        for (std::size_t path_max = sizeof(small_buf) * 2u;; path_max *= 2u) // loop 'til buffer large enough
-        {
-            if (BOOST_UNLIKELY(path_max > absolute_path_max))
-            {
-                if (!ec)
-                    BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::read_symlink", p, error_code(ENAMETOOLONG, system_category())));
-
-                ec->assign(ENAMETOOLONG, system_category());
-                break;
-            }
-
-            boost::scoped_array< char > buf(new char[path_max]);
-            result = ::readlink(path_str, buf.get(), path_max);
-            if (BOOST_UNLIKELY(result < 0))
-            {
-                goto fail;
-            }
-            else if (BOOST_LIKELY(static_cast< std::size_t >(result) < path_max))
-            {
-                symlink_path.assign(buf.get(), buf.get() + result);
-                break;
-            }
-        }
-    }
-
-#else
-
-    handle_wrapper h(create_file_handle(
-        p.c_str(),
-        FILE_READ_ATTRIBUTES,
-        FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
-        NULL,
-        OPEN_EXISTING,
-        FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT));
-
-    DWORD error;
-    if (BOOST_UNLIKELY(h.handle == INVALID_HANDLE_VALUE))
-    {
-    return_last_error:
-        error = ::GetLastError();
-        emit_error(error, p, ec, "boost::filesystem::read_symlink");
-        return symlink_path;
-    }
-
-    boost::scoped_ptr< reparse_data_buffer_with_storage > buf(new reparse_data_buffer_with_storage);
-    DWORD sz = 0u;
-    if (BOOST_UNLIKELY(!::DeviceIoControl(h.handle, FSCTL_GET_REPARSE_POINT, NULL, 0, buf.get(), sizeof(*buf), &sz, NULL)))
-        goto return_last_error;
-
-    const wchar_t* buffer;
-    std::size_t offset, len;
-    switch (buf->rdb.ReparseTag)
-    {
-    case IO_REPARSE_TAG_MOUNT_POINT:
-        buffer = buf->rdb.MountPointReparseBuffer.PathBuffer;
-        offset = buf->rdb.MountPointReparseBuffer.SubstituteNameOffset;
-        len = buf->rdb.MountPointReparseBuffer.SubstituteNameLength;
-        break;
-
-    case IO_REPARSE_TAG_SYMLINK:
-        buffer = buf->rdb.SymbolicLinkReparseBuffer.PathBuffer;
-        offset = buf->rdb.SymbolicLinkReparseBuffer.SubstituteNameOffset;
-        len = buf->rdb.SymbolicLinkReparseBuffer.SubstituteNameLength;
-        // Note: iff info.rdb.SymbolicLinkReparseBuffer.Flags & SYMLINK_FLAG_RELATIVE
-        //       -> resulting path is relative to the source
-        break;
-
-    default:
-        emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "Unknown ReparseTag in boost::filesystem::read_symlink");
-        return symlink_path;
-    }
-
-    symlink_path = convert_nt_path_to_win32_path(buffer + offset / sizeof(wchar_t), len / sizeof(wchar_t));
-#endif
-
-    return symlink_path;
-}
-
-BOOST_FILESYSTEM_DECL
-path relative(path const& p, path const& base, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    error_code local_ec;
-    path cur_path;
-    if (!p.is_absolute() || !base.is_absolute())
-    {
-        cur_path = detail::current_path(&local_ec);
-        if (BOOST_UNLIKELY(!!local_ec))
-        {
-        fail_local_ec:
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::relative", p, base, local_ec));
-
-            *ec = local_ec;
-            return path();
-        }
-    }
-
-    path wc_base(detail::weakly_canonical(base, cur_path, &local_ec));
-    if (BOOST_UNLIKELY(!!local_ec))
-        goto fail_local_ec;
-    path wc_p(detail::weakly_canonical(p, cur_path, &local_ec));
-    if (BOOST_UNLIKELY(!!local_ec))
-        goto fail_local_ec;
-    return wc_p.lexically_relative(wc_base);
-}
-
-BOOST_FILESYSTEM_DECL
-bool remove(path const& p, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    return detail::remove_impl(p, ec);
-}
-
-BOOST_FILESYSTEM_DECL
-uintmax_t remove_all(path const& p, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    return detail::remove_all_impl(p, ec);
-}
-
-BOOST_FILESYSTEM_DECL
-void rename(path const& old_p, path const& new_p, error_code* ec)
-{
-    error(!BOOST_MOVE_FILE(old_p.c_str(), new_p.c_str()) ? BOOST_ERRNO : 0, old_p, new_p, ec, "boost::filesystem::rename");
-}
-
-BOOST_FILESYSTEM_DECL
-void resize_file(path const& p, uintmax_t size, system::error_code* ec)
-{
-#if defined(BOOST_POSIX_API)
-    if (BOOST_UNLIKELY(size > static_cast< uintmax_t >((std::numeric_limits< off_t >::max)())))
-    {
-        emit_error(system::errc::file_too_large, p, ec, "boost::filesystem::resize_file");
-        return;
-    }
-#endif
-    error(!BOOST_RESIZE_FILE(p.c_str(), size) ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::resize_file");
-}
-
-BOOST_FILESYSTEM_DECL
-space_info space(path const& p, error_code* ec)
-{
-    space_info info;
-    // Initialize members to -1, as required by C++20 [fs.op.space]/1 in case of error
-    info.capacity = static_cast< uintmax_t >(-1);
-    info.free = static_cast< uintmax_t >(-1);
-    info.available = static_cast< uintmax_t >(-1);
-
-    if (ec)
-        ec->clear();
-
-#if defined(BOOST_FILESYSTEM_USE_WASI)
-
-    emit_error(BOOST_ERROR_NOT_SUPPORTED, p, ec, "boost::filesystem::space");
-
-#elif defined(BOOST_POSIX_API)
-
-    struct BOOST_STATVFS vfs;
-    if (!error(::BOOST_STATVFS(p.c_str(), &vfs) ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::space"))
-    {
-        info.capacity = static_cast< uintmax_t >(vfs.f_blocks) * BOOST_STATVFS_F_FRSIZE;
-        info.free = static_cast< uintmax_t >(vfs.f_bfree) * BOOST_STATVFS_F_FRSIZE;
-        info.available = static_cast< uintmax_t >(vfs.f_bavail) * BOOST_STATVFS_F_FRSIZE;
-    }
-
-#else
-
-    // GetDiskFreeSpaceExW requires a directory path, which is unlike statvfs, which accepts any file.
-    // To work around this, test if the path refers to a directory and use the parent directory if not.
-    error_code local_ec;
-    file_status status = detail::status_impl(p, &local_ec);
-    if (status.type() == fs::status_error || status.type() == fs::file_not_found)
-    {
-    fail_local_ec:
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::space", p, local_ec));
-        *ec = local_ec;
-        return info;
-    }
-
-    path dir_path = p;
-    if (!is_directory(status))
-    {
-        path cur_path = detail::current_path(ec);
-        if (ec && *ec)
-            return info;
-
-        status = detail::symlink_status_impl(p, &local_ec);
-        if (status.type() == fs::status_error)
-            goto fail_local_ec;
-        if (is_symlink(status))
-        {
-            // We need to resolve the symlink so that we report the space for the symlink target
-            dir_path = detail::canonical(p, cur_path, ec);
-            if (ec && *ec)
-                return info;
-        }
-
-        dir_path = dir_path.parent_path();
-        if (dir_path.empty())
-        {
-            // The original path was just a filename, which is a relative path wrt. current directory
-            dir_path = cur_path;
-        }
-    }
-
-    // For UNC names, the path must also include a trailing slash.
-    path::string_type str = dir_path.native();
-    if (str.size() >= 2u && detail::is_directory_separator(str[0]) && detail::is_directory_separator(str[1]) && !detail::is_directory_separator(*(str.end() - 1)))
-        str.push_back(path::preferred_separator);
-
-    ULARGE_INTEGER avail, total, free;
-    if (!error(::GetDiskFreeSpaceExW(str.c_str(), &avail, &total, &free) == 0, p, ec, "boost::filesystem::space"))
-    {
-        info.capacity = static_cast< uintmax_t >(total.QuadPart);
-        info.free = static_cast< uintmax_t >(free.QuadPart);
-        info.available = static_cast< uintmax_t >(avail.QuadPart);
-    }
-
-#endif
-
-    return info;
-}
-
-BOOST_FILESYSTEM_DECL
-file_status status(path const& p, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    return detail::status_impl(p, ec);
-}
-
-BOOST_FILESYSTEM_DECL
-file_status symlink_status(path const& p, error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-    return detail::symlink_status_impl(p, ec);
-}
-
-// contributed by Jeff Flinn
-BOOST_FILESYSTEM_DECL
-path temp_directory_path(system::error_code* ec)
-{
-    if (ec)
-        ec->clear();
-
-#ifdef BOOST_POSIX_API
-    const char* val = NULL;
-
-    (val = std::getenv("TMPDIR")) ||
-        (val = std::getenv("TMP")) ||
-        (val = std::getenv("TEMP")) ||
-        (val = std::getenv("TEMPDIR"));
-
-#ifdef __ANDROID__
-    const char* default_tmp = "/data/local/tmp";
-#else
-    const char* default_tmp = "/tmp";
-#endif
-    path p((val != NULL) ? val : default_tmp);
-
-    if (BOOST_UNLIKELY(p.empty()))
-    {
-    fail_not_dir:
-        error(ENOTDIR, p, ec, "boost::filesystem::temp_directory_path");
-        return p;
-    }
-
-    file_status status = detail::status_impl(p, ec);
-    if (BOOST_UNLIKELY(ec && *ec))
-        return path();
-    if (BOOST_UNLIKELY(!is_directory(status)))
-        goto fail_not_dir;
-
-    return p;
-
-#else // Windows
-#if !defined(UNDER_CE)
-
-    static const wchar_t* env_list[] = { L"TMP", L"TEMP", L"LOCALAPPDATA", L"USERPROFILE" };
-    static const wchar_t temp_dir[] = L"Temp";
-
-    path p;
-    for (unsigned int i = 0; i < sizeof(env_list) / sizeof(*env_list); ++i)
-    {
-        std::wstring env = wgetenv(env_list[i]);
-        if (!env.empty())
-        {
-            p = env;
-            if (i >= 2)
-                path_algorithms::append_v4(p, temp_dir, temp_dir + (sizeof(temp_dir) / sizeof(*temp_dir) - 1u));
-            error_code lcl_ec;
-            if (exists(p, lcl_ec) && !lcl_ec && is_directory(p, lcl_ec) && !lcl_ec)
-                break;
-            p.clear();
-        }
-    }
-
-    if (p.empty())
-    {
-        // use a separate buffer since in C++03 a string is not required to be contiguous
-        const UINT size = ::GetWindowsDirectoryW(NULL, 0);
-        if (BOOST_UNLIKELY(size == 0))
-        {
-        getwindir_error:
-            int errval = ::GetLastError();
-            error(errval, ec, "boost::filesystem::temp_directory_path");
-            return path();
-        }
-
-        boost::scoped_array< wchar_t > buf(new wchar_t[size]);
-        if (BOOST_UNLIKELY(::GetWindowsDirectoryW(buf.get(), size) == 0))
-            goto getwindir_error;
-
-        p = buf.get(); // do not depend on initial buf size, see ticket #10388
-        path_algorithms::append_v4(p, temp_dir, temp_dir + (sizeof(temp_dir) / sizeof(*temp_dir) - 1u));
-    }
-
-    return p;
-
-#else // Windows CE
-
-    // Windows CE has no environment variables, so the same code as used for
-    // regular Windows, above, doesn't work.
-
-    DWORD size = ::GetTempPathW(0, NULL);
-    if (size == 0u)
-    {
-    fail:
-        int errval = ::GetLastError();
-        error(errval, ec, "boost::filesystem::temp_directory_path");
-        return path();
-    }
-
-    boost::scoped_array< wchar_t > buf(new wchar_t[size]);
-    if (::GetTempPathW(size, buf.get()) == 0)
-        goto fail;
-
-    path p(buf.get());
-    p.remove_trailing_separator();
-
-    file_status status = detail::status_impl(p, ec);
-    if (ec && *ec)
-        return path();
-    if (!is_directory(status))
-    {
-        error(ERROR_PATH_NOT_FOUND, p, ec, "boost::filesystem::temp_directory_path");
-        return path();
-    }
-
-    return p;
-
-#endif // !defined(UNDER_CE)
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-path system_complete(path const& p, system::error_code* ec)
-{
-#ifdef BOOST_POSIX_API
-
-    if (p.empty() || p.is_absolute())
-        return p;
-
-    path res(current_path());
-    path_algorithms::append_v4(res, p);
-    return res;
-
-#else
-    if (p.empty())
-    {
-        if (ec)
-            ec->clear();
-        return p;
-    }
-
-    BOOST_CONSTEXPR_OR_CONST std::size_t buf_size = 128u;
-    wchar_t buf[buf_size];
-    wchar_t* pfn;
-    std::size_t len = get_full_path_name(p, buf_size, buf, &pfn);
-
-    if (error(len == 0 ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::system_complete"))
-        return path();
-
-    if (len < buf_size) // len does not include null termination character
-        return path(&buf[0]);
-
-    boost::scoped_array< wchar_t > big_buf(new wchar_t[len]);
-
-    return error(get_full_path_name(p, len, big_buf.get(), &pfn) == 0 ? BOOST_ERRNO : 0, p, ec, "boost::filesystem::system_complete") ? path() : path(big_buf.get());
-#endif
-}
-
-BOOST_FILESYSTEM_DECL
-path weakly_canonical(path const& p, path const& base, system::error_code* ec)
-{
-    system::error_code local_ec;
-    const path::iterator p_end(p.end());
-
-#if defined(BOOST_POSIX_API)
-
-    path::iterator itr(p_end);
-    path head(p);
-    for (; !head.empty(); path_algorithms::decrement_v4(itr))
-    {
-        file_status head_status(detail::status_impl(head, &local_ec));
-        if (BOOST_UNLIKELY(head_status.type() == fs::status_error))
-        {
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::weakly_canonical", head, local_ec));
-
-            *ec = local_ec;
-            return path();
-        }
-
-        if (head_status.type() != fs::file_not_found)
-            break;
-
-        head.remove_filename_and_trailing_separators();
-    }
-
-    if (head.empty())
-        return path_algorithms::lexically_normal_v4(p);
-
-    path const& dot_p = dot_path();
-    path const& dot_dot_p = dot_dot_path();
-
-#else
-
-    // On Windows, filesystem APIs such as GetFileAttributesW and CreateFileW perform lexical path normalization
-    // internally. As a result, a path like "c:\a\.." can be reported as present even if "c:\a" is not. This would
-    // break canonical, as symlink_status that it calls internally would report an error that the file at the
-    // intermediate path does not exist. To avoid this, scan the initial path in the forward direction.
-    // Also, operate on paths with preferred separators. This can be important on Windows since GetFileAttributesW
-    // or CreateFileW, which is called in status() may return "file not found" for paths to network shares and
-    // mounted cloud storages that have forward slashes as separators.
-    // Also, avoid querying status of the root name such as \\?\c: as CreateFileW returns ERROR_INVALID_FUNCTION for
-    // such path. Querying the status of a root name such as c: is also not right as this path refers to the current
-    // directory on drive C:, which is not what we want to test for existence anyway.
-    path::iterator itr(p.begin());
-    path head;
-    if (p.has_root_name())
-    {
-        BOOST_ASSERT(itr != p_end);
-        head = *itr;
-        path_algorithms::increment_v4(itr);
-    }
-
-    if (p.has_root_directory())
-    {
-        BOOST_ASSERT(itr != p_end);
-        // Convert generic separator returned by the iterator for the root directory to
-        // the preferred separator.
-        head += path::preferred_separator;
-        path_algorithms::increment_v4(itr);
-    }
-
-    if (!head.empty())
-    {
-        file_status head_status(detail::status_impl(head, &local_ec));
-        if (BOOST_UNLIKELY(head_status.type() == fs::status_error))
-        {
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::weakly_canonical", head, local_ec));
-
-            *ec = local_ec;
-            return path();
-        }
-
-        if (head_status.type() == fs::file_not_found)
-        {
-            // If the root path does not exist then no path element exists
-            return path_algorithms::lexically_normal_v4(p);
-        }
-    }
-
-    path const& dot_p = dot_path();
-    path const& dot_dot_p = dot_dot_path();
-    for (; itr != p_end; path_algorithms::increment_v4(itr))
-    {
-        path const& p_elem = *itr;
-
-        // Avoid querying status of paths containing dot and dot-dot elements, as this will break
-        // if the root name starts with "\\?\".
-        if (path_algorithms::compare_v4(p_elem, dot_p) == 0)
-            continue;
-
-        if (path_algorithms::compare_v4(p_elem, dot_dot_p) == 0)
-        {
-            if (head.has_relative_path())
-                head.remove_filename_and_trailing_separators();
-
-            continue;
-        }
-
-        path_algorithms::append_v4(head, p_elem);
-
-        file_status head_status(detail::status_impl(head, &local_ec));
-        if (BOOST_UNLIKELY(head_status.type() == fs::status_error))
-        {
-            if (!ec)
-                BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::weakly_canonical", head, local_ec));
-
-            *ec = local_ec;
-            return path();
-        }
-
-        if (head_status.type() == fs::file_not_found)
-        {
-            head.remove_filename_and_trailing_separators();
-            break;
-        }
-    }
-
-    if (head.empty())
-        return path_algorithms::lexically_normal_v4(p);
-
-#endif
-
-    path tail;
-    bool tail_has_dots = false;
-    for (; itr != p_end; path_algorithms::increment_v4(itr))
-    {
-        path const& tail_elem = *itr;
-        path_algorithms::append_v4(tail, tail_elem);
-        // for a later optimization, track if any dot or dot-dot elements are present
-        if (!tail_has_dots && (path_algorithms::compare_v4(tail_elem, dot_p) == 0 || path_algorithms::compare_v4(tail_elem, dot_dot_p) == 0))
-            tail_has_dots = true;
-    }
-
-    head = detail::canonical(head, base, &local_ec);
-    if (BOOST_UNLIKELY(!!local_ec))
-    {
-        if (!ec)
-            BOOST_FILESYSTEM_THROW(filesystem_error("boost::filesystem::weakly_canonical", head, local_ec));
-
-        *ec = local_ec;
-        return path();
-    }
-
-    if (BOOST_LIKELY(!tail.empty()))
-    {
-        path_algorithms::append_v4(head, tail);
-
-        // optimization: only normalize if tail had dot or dot-dot element
-        if (tail_has_dots)
-            return path_algorithms::lexically_normal_v4(head);
-    }
-
-    return head;
-}
-
-} // namespace detail
-} // namespace filesystem
-} // namespace boost
-
-#include <boost/filesystem/detail/footer.hpp>