6.2

1 files changed, 0 insertions, 452 deletions

diff --git a/zen/FindFilePlus/find_file_plus.cpp b/zen/FindFilePlus/find_file_plus.cpp
deleted file mode 100644
index 247b916c..00000000
--- a/zen/FindFilePlus/find_file_plus.cpp
+++ /dev/null
@@ -1,452 +0,0 @@
-// **************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
-// * Copyright (C) Zenju (zenju AT gmx DOT de) - All Rights Reserved        *
-// **************************************************************************
-
-#include "find_file_plus.h"
-#include "init_dll_binding.h"
-//#include <windows.h>  //these two don't play nice with each other
-#include "load_dll.h"
-#include <new>
-
-using namespace dll;
-using namespace findplus;
-
-
-namespace
-{
-struct NtFileError //exception class
-{
-    NtFileError(NTSTATUS errorCode) : ntError(errorCode) {}
-    NTSTATUS ntError;
-};
-
-
-//--------------------------------------------------------------------------------------------------------------
-typedef NTSTATUS (NTAPI* NtOpenFileFunc)(PHANDLE fileHandle,
-                                         ACCESS_MASK desiredAccess,
-                                         POBJECT_ATTRIBUTES objectAttributes,
-                                         PIO_STATUS_BLOCK ioStatusBlock,
-                                         ULONG shareAccess,
-                                         ULONG openOptions);
-
-typedef NTSTATUS (NTAPI* NtCloseFunc)(HANDLE handle);
-
-typedef NTSTATUS (NTAPI* NtQueryDirectoryFileFunc)(HANDLE fileHandle,
-                                                   HANDLE event,
-                                                   PIO_APC_ROUTINE apcRoutine,
-                                                   PVOID apcContext,
-                                                   PIO_STATUS_BLOCK ioStatusBlock,
-                                                   PVOID fileInformation,
-                                                   ULONG length,
-                                                   FILE_INFORMATION_CLASS fileInformationClass,
-                                                   BOOLEAN ReturnSingleEntry,
-                                                   PUNICODE_STRING fileMask,
-                                                   BOOLEAN restartScan);
-
-typedef ULONG (NTAPI* RtlNtStatusToDosErrorFunc)(NTSTATUS /*__in status*/);
-
-typedef struct _RTL_RELATIVE_NAME_U
-{
-    UNICODE_STRING RelativeName;
-    HANDLE ContainingDirectory;
-    PVOID /*PRTLP_CURDIR_REF*/ CurDirRef;
-} RTL_RELATIVE_NAME_U, *PRTL_RELATIVE_NAME_U;
-
-typedef BOOLEAN (NTAPI* RtlDosPathNameToNtPathName_UFunc)(PCWSTR dosFileName, 	              //__in
-                                                          PUNICODE_STRING ntFileName,         //__out
-                                                          PCWSTR* filePart, 	              //__out
-                                                          PRTL_RELATIVE_NAME_U relativeName); //__out
-
-typedef BOOLEAN (NTAPI* RtlDosPathNameToRelativeNtPathName_UFunc)(PCWSTR dosFileName, 	              //__in
-                                                                  PUNICODE_STRING ntFileName,         //__out
-                                                                  PCWSTR* filePart, 	              //__out
-                                                                  PRTL_RELATIVE_NAME_U relativeName); //__out
-
-typedef BOOLEAN (NTAPI*  RtlCreateUnicodeStringFunc)(PUNICODE_STRING DestinationString, //_Out_
-                                                     PCWSTR SourceString);              //_In_
-
-typedef VOID (NTAPI* RtlFreeUnicodeStringFunc)(PUNICODE_STRING); //__inout unicodeString
-
-//--------------------------------------------------------------------------------------------------------------
-
-//it seems we cannot use any of the ntoskrnl.lib files in WinDDK as they produce access violations
-//fortunately dynamic binding works fine:
-const SysDllFun<NtOpenFileFunc>			     	  ntOpenFile                  (L"ntdll.dll", "NtOpenFile");
-const SysDllFun<NtCloseFunc>				      ntClose                     (L"ntdll.dll", "NtClose");
-const SysDllFun<NtQueryDirectoryFileFunc>	      ntQueryDirectoryFile        (L"ntdll.dll", "NtQueryDirectoryFile");
-const SysDllFun<RtlNtStatusToDosErrorFunc>	      rtlNtStatusToDosError       (L"ntdll.dll", "RtlNtStatusToDosError");
-const SysDllFun<RtlCreateUnicodeStringFunc>	      rtlCreateUnicodeString      (L"ntdll.dll", "RtlCreateUnicodeString");
-const SysDllFun<RtlFreeUnicodeStringFunc>         rtlFreeUnicodeString        (L"ntdll.dll", "RtlFreeUnicodeString");
-const SysDllFun<RtlDosPathNameToNtPathName_UFunc> rtlDosPathNameToNtPathName_U(SysDllFun<RtlDosPathNameToRelativeNtPathName_UFunc>(L"ntdll.dll", "RtlDosPathNameToRelativeNtPathName_U") ?
-                                                                               SysDllFun<RtlDosPathNameToRelativeNtPathName_UFunc>(L"ntdll.dll", "RtlDosPathNameToRelativeNtPathName_U") : //use the newer version if available
-                                                                               SysDllFun<RtlDosPathNameToNtPathName_UFunc>(L"ntdll.dll", "RtlDosPathNameToNtPathName_U")); //fallback for XP
-//global constants only -> preserve thread safety!
-}
-
-
-bool findplus::initDllBinding() //evaluate in ::DllMain() when attaching process
-{
-    //NT/ZwXxx Routines
-    //http://msdn.microsoft.com/en-us/library/ff567122(v=VS.85).aspx
-
-    //Run-Time Library (RTL) Routines
-    //http://msdn.microsoft.com/en-us/library/ff563638(v=VS.85).aspx
-
-    //verify dynamic dll binding
-    return ntOpenFile             &&
-           ntClose                &&
-           ntQueryDirectoryFile   &&
-           rtlNtStatusToDosError  &&
-           rtlCreateUnicodeString &&
-           rtlFreeUnicodeString   &&
-           rtlDosPathNameToNtPathName_U;
-
-    //this may become handy some time: nt status code STATUS_ORDINAL_NOT_FOUND maps to win32 code ERROR_INVALID_ORDINAL
-}
-
-
-class findplus::FileSearcher
-{
-public:
-    FileSearcher(const wchar_t* dirname); //throw NtFileError
-    ~FileSearcher();
-
-    bool readDir(FileInformation& output); //throw NtFileError; returns false if "no more files"
-
-private:
-    template <class QueryPolicy> bool readDirImpl(FileInformation& output); //throw NtFileError
-
-    UNICODE_STRING dirnameNt; //it seems hDir implicitly keeps a reference to this, at least ::FindFirstFile() does no cleanup before ::FindClose()!
-    HANDLE hDir;
-
-    ULONG  nextEntryOffset; //!= 0 if entry is waiting in buffer
-    //::FindNextFileW() uses 0x1000 = 4096 = sizeof(FILE_BOTH_DIR_INFORMATION) + sizeof(TCHAR) * 2000
-    //=> let's use the same, even if our header is 16 byte larger; maybe there is some packet size advantage for networks? Note that larger buffers seem to degrade performance.
-    static const ULONG BUFFER_SIZE = 4096;
-    LONGLONG buffer[BUFFER_SIZE / sizeof(LONGLONG)]; //buffer needs to be aligned at LONGLONG boundary
-
-    static_assert(BUFFER_SIZE % sizeof(LONGLONG) == 0, "ups, our buffer is trimmed!");
-};
-
-
-//a simple scope guard without <utility>, <type_traits>, <cassert> dependencies:
-template <typename F>
-class ScopeGuardLean
-{
-public:
-    explicit ScopeGuardLean(F fun) : dismissed_(false), fun_(fun) {}
-    ScopeGuardLean(ScopeGuardLean&& other) : dismissed_(other.dismissed_), fun_(std::move(other.fun_)) { other.dismiss(); }
-
-    void dismiss() { dismissed_ = true; }
-
-    ~ScopeGuardLean()
-    {
-        if (!dismissed_)
-            try { fun_(); }
-            catch (...) {}
-    }
-
-private:
-    ScopeGuardLean           (const ScopeGuardLean&); // = delete
-    ScopeGuardLean& operator=(const ScopeGuardLean&); //
-
-    bool dismissed_;
-    F fun_;
-};
-
-template <class F> inline
-ScopeGuardLean<F> makeGuard(F fun) { return ScopeGuardLean<F>(fun); }
-
-
-FileSearcher::FileSearcher(const wchar_t* dirname) :
-    dirnameNt(), //[!]
-    hDir(nullptr),
-    nextEntryOffset(0)
-{
-    auto guardConstructor = makeGuard([&] { this->~FileSearcher(); });
-    //--------------------------------------------------------------------------------------------------------------
-
-    //convert dosFileName, e.g. C:\Users or \\?\C:\Users to ntFileName \??\C:\Users
-    //in contrast to ::FindFirstFile() implementation we don't evaluate the relativeName,
-    //however tests indicate ntFileName is *always* filled with an absolute name, even if dosFileName is relative
-
-    PCWSTR filePart = nullptr;
-    RTL_RELATIVE_NAME_U relativeName = {};
-
-    //NOTE: RtlDosPathNameToNtPathName_U may be used on all XP/Win7/Win8 for compatibility
-    //		RtlDosPathNameToNtPathName_U:         used by Windows XP          available with OS version 3.51 (Windows NT) and higher
-    //		RtlDosPathNameToRelativeNtPathName_U: used by Win7/Win8           available with OS version 5.2  (Windows Server 2003) and higher
-    if (!rtlDosPathNameToNtPathName_U(dirname,        //__in dosFileName,
-                                      &dirnameNt,     //__out ntFileName,
-                                      &filePart,      //__out FilePart     - points into ntFileName
-                                      &relativeName)) //__out relativeName - points into ntFileName; empty if dosFileName is absolute
-        throw NtFileError(STATUS_OBJECT_PATH_NOT_FOUND); //translates to ERROR_PATH_NOT_FOUND, same behavior like ::FindFirstFileEx()
-    //note 1: internally it distinguishes between "quick path" == \\?\ and "slow path" handling!
-    //http://doxygen.reactos.org/d9/d6e/lib_2rtl_2path_8c_a11c87ad0f7752999b0b8972af6165d7a.html#a11c87ad0f7752999b0b8972af6165d7a
-
-    //note 2: without \\?\, i.e. slow path handling it calls RtlGetFullPathName_Ustr() which removes trailing spaces!!!
-    //http://doxygen.reactos.org/d9/d6e/lib_2rtl_2path_8c_a8624b864678ca64b031f5fc273e022af.html#a8624b864678ca64b031f5fc273e022af
-    //FindFirstFile() gets lucky because it passes "<dirname>\*" which never has trailing space chars! >:(
-
-    OBJECT_ATTRIBUTES objAttr = {};
-    if (relativeName.RelativeName.Length == 0) //absolute name
-    {
-        InitializeObjectAttributes(&objAttr,             //[out] POBJECT_ATTRIBUTES initializedAttributes,
-                                   &dirnameNt,           //[in]  PUNICODE_STRING objectName,
-                                   OBJ_CASE_INSENSITIVE, //[in]  ULONG attributes,
-                                   nullptr,              //[in]  HANDLE rootDirectory,
-                                   nullptr);             //[in, optional] PSECURITY_DESCRIPTOR securityDescriptor
-    }
-    else //relative name (it seems we alternatively could also use dirnameNt here?)
-    {
-        InitializeObjectAttributes(&objAttr,                         //[out] POBJECT_ATTRIBUTES initializedAttributes,
-                                   &relativeName.RelativeName,       //[in]  PUNICODE_STRING objectName,
-                                   OBJ_CASE_INSENSITIVE,             //[in]  ULONG attributes,
-                                   relativeName.ContainingDirectory, //[in]  HANDLE rootDirectory,
-                                   nullptr);                         //[in, optional] PSECURITY_DESCRIPTOR securityDescriptor
-    }
-
-    {
-        IO_STATUS_BLOCK status = {};
-        NTSTATUS rv = ntOpenFile(&hDir,                             //__out PHANDLE FileHandle,
-                                 FILE_LIST_DIRECTORY | SYNCHRONIZE, //__in ACCESS_MASK desiredAccess, - 100001 used by ::FindFirstFile() on all XP/Win7/Win8
-                                 &objAttr,                          //__in POBJECT_ATTRIBUTES objectAttributes,
-                                 &status,                           //__out PIO_STATUS_BLOCK ioStatusBlock,
-                                 FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, //__in ULONG shareAccess, - 7 on Win7/Win8, 3 on XP
-                                 FILE_DIRECTORY_FILE | FILE_SYNCHRONOUS_IO_NONALERT | FILE_OPEN_FOR_BACKUP_INTENT); //__in ULONG openOptions - 4021 used on all XP/Win7/Win8
-        if (!NT_SUCCESS(rv))
-            throw NtFileError(rv);
-    }
-
-    guardConstructor.dismiss();
-}
-
-
-inline
-FileSearcher::~FileSearcher()
-{
-    //cleanup in reverse order
-    if (hDir)
-        ntClose(hDir);
-
-    if (dirnameNt.Buffer)
-        rtlFreeUnicodeString(&dirnameNt); //cleanup identical to ::FindFirstFile()
-    //note that most of this function seems inlined by the linker, so that its assembly looks equivalent to "RtlFreeHeap(RtlGetProcessHeap(), 0, ntPathName.Buffer)"
-}
-
-
-namespace
-{
-/*
-Common C-style policy handling directory traversal:
-
-struct QueryPolicy
-{
-	typedef ... RawFileInfo;
-	static const FILE_INFORMATION_CLASS fileInformationClass = ...;
-	static void extractFileId(const RawFileInfo& rawInfo, FileInformation& fileInfo);
-};
-*/
-
-struct DirQueryDefault //as implemented in Win32 FindFirstFile()/FindNextFile()
-{
-    typedef FILE_BOTH_DIR_INFORMATION RawFileInfo;
-    static const FILE_INFORMATION_CLASS fileInformationClass = FileBothDirectoryInformation;
-    static void extractFileId(const RawFileInfo& rawInfo, FileInformation& fileInfo) { fileInfo.fileId.QuadPart = 0; }
-};
-
-struct DirQueryFileId
-{
-    typedef FILE_ID_BOTH_DIR_INFORMATION RawFileInfo;
-    static const FILE_INFORMATION_CLASS fileInformationClass = FileIdBothDirectoryInformation;
-    static void extractFileId(const RawFileInfo& rawInfo, FileInformation& fileInfo)
-    {
-        fileInfo.fileId.QuadPart = rawInfo.FileId.QuadPart; //may be 0 even in this context, e.g. for mapped FTP drive!
-        static_assert(sizeof(fileInfo.fileId) == sizeof(rawInfo.FileId), "dang!");
-    }
-};
-}
-
-
-inline
-bool FileSearcher::readDir(FileInformation& output) { return readDirImpl<DirQueryFileId>(output); } //throw NtFileError
-
-
-template <class QueryPolicy>
-bool FileSearcher::readDirImpl(FileInformation& output) //throw NtFileError; returns false if "no more files"
-{
-    //although FILE_ID_FULL_DIR_INFORMATION should suffice for our purposes, there are problems on Windows XP for certain directories, e.g. "\\Vboxsvr\build"
-    //making NtQueryDirectoryFile() return with STATUS_INVALID_PARAMETER while other directories, e.g. "C:\" work fine for some reason
-    //FILE_ID_BOTH_DIR_INFORMATION on the other hand works on XP/Win7/Win8
-    //performance: there is no noticeable difference between FILE_ID_BOTH_DIR_INFORMATION and FILE_ID_FULL_DIR_INFORMATION
-
-    /* corresponding first access in ::FindFirstFileW()
-
-    NTSTATUS rv = ntQueryDirectoryFile(hDir,        //__in HANDLE fileHandle,
-                                       nullptr,     //__in_opt HANDLE event,
-                                       nullptr,     //__in_opt PIO_APC_ROUTINE apcRoutine,
-                                       nullptr,     //__in_opt PVOID apcContext,
-                                       &status,     //__out PIO_STATUS_BLOCK ioStatusBlock,
-                                       &buffer,     //__out_bcount(Length) PVOID fileInformation,
-                                       BUFFER_SIZE, //__in ULONG length, ::FindFirstFileW() on all XP/Win7/Win8 uses sizeof(FILE_BOTH_DIR_INFORMATION) + sizeof(TCHAR) * MAX_PATH == 0x268
-                                       FileIdBothDirectoryInformation, //__in FILE_INFORMATION_CLASS fileInformationClass - all XP/Win7/Win8 use "FileBothDirectoryInformation"
-                                       true,        //__in BOOLEAN returnSingleEntry,
-                                       nullptr,     //__in_opt PUNICODE_STRING mask,
-                                       false);      //__in BOOLEAN restartScan
-    */
-
-    //analog to ::FindNextFileW() with performance optimized access (in contrast to first access in ::FindFirstFileW())
-    if (nextEntryOffset == 0)
-    {
-        IO_STATUS_BLOCK status = {};
-        NTSTATUS rv = ntQueryDirectoryFile(hDir,        //__in HANDLE fileHandle,
-                                           nullptr,     //__in_opt HANDLE event,
-                                           nullptr,     //__in_opt PIO_APC_ROUTINE apcRoutine,
-                                           nullptr,     //__in_opt PVOID apcContext,
-                                           &status,     //__out PIO_STATUS_BLOCK ioStatusBlock,
-                                           &buffer,     //__out_bcount(Length) PVOID fileInformation,
-                                           BUFFER_SIZE, //__in ULONG length, ::FindNextFileW() on all XP/Win7/Win8 uses sizeof(FILE_BOTH_DIR_INFORMATION) + sizeof(TCHAR) * 2000 == 0x1000
-                                           QueryPolicy::fileInformationClass, //__in FILE_INFORMATION_CLASS fileInformationClass - all XP/Win7/Win8 use "FileBothDirectoryInformation"
-                                           false,       //__in BOOLEAN returnSingleEntry,
-                                           nullptr,     //__in_opt PUNICODE_STRING mask,
-                                           false);      //__in BOOLEAN restartScan
-        if (!NT_SUCCESS(rv))
-        {
-            /*
-            fallback to default directory query method, if FileIdBothDirectoryInformation is not properly implemented
-            this is required for NetDrive mounted Webdav, e.g. www.box.net and NT4, 2000 remote drives, et al.
-
-            NT status code                  |  Win32 error code
-            --------------------------------|------------------------
-            STATUS_INVALID_LEVEL            | ERROR_INVALID_LEVEL
-            STATUS_NOT_SUPPORTED            | ERROR_NOT_SUPPORTED
-            STATUS_UNEXPECTED_NETWORK_ERROR | ERROR_UNEXP_NET_ERR -> traverse network drive hosted by Win98
-            STATUS_INVALID_PARAMETER        | ERROR_INVALID_PARAMETER
-            STATUS_INVALID_NETWORK_RESPONSE | ERROR_BAD_NET_RESP
-            STATUS_INVALID_INFO_CLASS       | ERROR_INVALID_PARAMETER
-            STATUS_UNSUCCESSFUL             | ERROR_GEN_FAILURE
-            STATUS_ACCESS_VIOLATION         | ERROR_NOACCESS      ->FileIdBothDirectoryInformation on XP accessing UDF
-            STATUS_NO_SUCH_FILE             | ERROR_FILE_NOT_FOUND
-
-            rv == STATUS_NO_SUCH_FILE:
-            failure to find a file on first call returns STATUS_NO_SUCH_FILE, while subsequent accesses return STATUS_NO_MORE_FILES
-            note: not all directories contain ".", ".." entries! E.g. a drive's root directory or NetDrive + ftp.gnu.org\CRYPTO.README"
-            -> addon: this is NOT a directory, it looks like one in NetDrive, but it's a file in Opera
-            STATUS_NO_SUCH_FILE is abused by some citrix shares instead of "STATUS_INVALID_PARAMETER" so we treat it as such!
-            => since the directory is "truly empty" a fallback won't hurt
-            */
-            if (rv == STATUS_NO_MORE_FILES) //perf: don't throw an exception in this common case! => 8% perf boost for FFS comparison phase!
-                return false;
-
-            if (rv == STATUS_NOT_SUPPORTED            ||
-                rv == STATUS_INVALID_LEVEL            ||
-                rv == STATUS_NO_SUCH_FILE             || //[!]
-                rv == STATUS_UNEXPECTED_NETWORK_ERROR ||
-                rv == STATUS_INVALID_PARAMETER        ||
-                rv == STATUS_INVALID_NETWORK_RESPONSE ||
-                rv == STATUS_INVALID_INFO_CLASS       ||
-                //rv == STATUS_NOT_IMPLEMENTED          || -> first confirm that these codes
-                //rv == STATUS_INVALID_DEVICE_REQUEST   || -> are in fact used!
-                rv == STATUS_UNSUCCESSFUL             ||
-                rv == STATUS_ACCESS_VIOLATION)
-                rv = STATUS_NOT_SUPPORTED;
-
-            throw NtFileError(rv); //throws STATUS_NO_MORE_FILES when finished
-        }
-
-        //  for (NTSTATUS i = 0xC0000000L; i != -1; ++i)
-        //  {
-        //      if (rtlNtStatusToDosError(i) == 59) //ERROR_UNEXP_NET_ERR
-        //		    __debugbreak(); //__asm int 3;
-        //	}
-
-        if (status.Information == 0)                   //except for the first call to call ::NtQueryDirectoryFile():
-            throw NtFileError(STATUS_BUFFER_OVERFLOW); //if buffer size is too small, return value is STATUS_SUCCESS and Information == 0 -> we don't expect this!
-    }
-
-    typedef typename QueryPolicy::RawFileInfo RawFileInfo;
-    const RawFileInfo& dirInfo = *reinterpret_cast<RawFileInfo*>(reinterpret_cast<char*>(buffer) + nextEntryOffset);
-
-    if (dirInfo.NextEntryOffset == 0)
-        nextEntryOffset = 0; //our offset is relative to the beginning of the buffer
-    else
-        nextEntryOffset += dirInfo.NextEntryOffset;
-
-
-    auto toFileTime = [](const LARGE_INTEGER& rawTime) -> FILETIME
-    {
-        FILETIME tmp = { rawTime.LowPart, rawTime.HighPart };
-        return tmp;
-    };
-
-    QueryPolicy::extractFileId(dirInfo, output);
-
-    output.creationTime      = toFileTime(dirInfo.CreationTime);
-    output.lastWriteTime     = toFileTime(dirInfo.LastWriteTime); //the similar field "ChangeTime" refers to changes to metadata in addition to write accesses
-    output.fileSize.QuadPart = dirInfo.EndOfFile.QuadPart;
-    output.fileAttributes    = dirInfo.FileAttributes;
-    output.shortNameLength   = dirInfo.FileNameLength / sizeof(TCHAR); //FileNameLength is in bytes!
-
-    if (dirInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) //analog to FindFirstFile(), confirmed for Win XP and Win 7
-        output.reparseTag = dirInfo.EaSize;                    //
-    else
-        output.reparseTag = 0;
-
-    if (dirInfo.FileNameLength + sizeof(TCHAR) > sizeof(output.shortName)) //this may actually happen if ::NtQueryDirectoryFile() decides to return a
-        throw NtFileError(STATUS_BUFFER_OVERFLOW);    //short name of length MAX_PATH + 1, 0-termination is not required!
-
-    ::memcpy(output.shortName, dirInfo.FileName, dirInfo.FileNameLength);
-    output.shortName[output.shortNameLength] = 0; //NOTE: FILE_ID_BOTH_DIR_INFORMATION::FileName in general is NOT 0-terminated! It is on XP/Win7, but NOT on Win8!
-
-    static_assert(sizeof(output.creationTime)   == sizeof(dirInfo.CreationTime),   "dang!");
-    static_assert(sizeof(output.lastWriteTime)  == sizeof(dirInfo.LastWriteTime),  "dang!");
-    static_assert(sizeof(output.fileSize)       == sizeof(dirInfo.EndOfFile),      "dang!");
-    static_assert(sizeof(output.fileAttributes) == sizeof(dirInfo.FileAttributes), "dang!");
-    return true;
-}
-
-
-FindHandle findplus::openDir(const wchar_t* dirname)
-{
-    try
-    {
-        return new FileSearcher(dirname); //throw NtFileError, std::bad_alloc
-    }
-    catch (const NtFileError& e)
-    {
-        setWin32Error(rtlNtStatusToDosError(e.ntError));
-        return nullptr;
-    }
-    catch (const std::bad_alloc&) //not unlikely in file sync context! => handle!
-    {
-        setWin32Error(rtlNtStatusToDosError(STATUS_NO_MEMORY));
-        return nullptr;
-    }
-}
-
-
-bool findplus::readDir(FindHandle hnd, FileInformation& output)
-{
-    try
-    {
-        if (!hnd->readDir(output)) //throw NtFileError
-        {
-            setWin32Error(rtlNtStatusToDosError(STATUS_NO_MORE_FILES));
-            return false;
-        }
-        return true;
-    }
-    catch (const NtFileError& e)
-    {
-        setWin32Error(rtlNtStatusToDosError(e.ntError));
-        return false;
-    }
-}
-
-
-void findplus::closeDir(FindHandle hnd)
-{
-    delete hnd;
-}