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Some improvements to Windows version detection + require Vista with SP-2 for DLL...
[mutilities/MUtilities.git] / src / OSSupport_Win32.cpp
index 133f3ad..bef14ba 100644 (file)
@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 // MuldeR's Utilities for Qt
-// Copyright (C) 2004-2015 LoRd_MuldeR <MuldeR2@GMX.de>
+// Copyright (C) 2004-2018 LoRd_MuldeR <MuldeR2@GMX.de>
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
@@ -27,6 +27,7 @@
 #include <Shellapi.h>
 #include <PowrProf.h>
 #include <Mmsystem.h>
+#include <WinIoCtl.h>
 #pragma warning(push)
 #pragma warning(disable:4091) //for MSVC2015
 #include <ShlObj.h>
 #include <MUtils/OSSupport.h>
 #include <MUtils/GUI.h>
 #include "CriticalSection_Win32.h"
+#include "Utils_Win32.h"
 
 //Qt
 #include <QMap>
 #include <QReadWriteLock>
-#include <QLibrary>
 #include <QDir>
 #include <QWidget>
 #include <QProcess>
+#include <QSet>
 
 //Main thread ID
 static const DWORD g_main_thread_id = GetCurrentThreadId();
@@ -284,7 +286,7 @@ g_os_version_lut[] =
        { MUtils::OS::Version::WINDOWS_WIN70, "Windows 7 or Windows Server 2008 R2"           },        //7
        { MUtils::OS::Version::WINDOWS_WIN80, "Windows 8 or Windows Server 2012"              },        //8
        { MUtils::OS::Version::WINDOWS_WIN81, "Windows 8.1 or Windows Server 2012 R2"         },        //8.1
-       { MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2014 (Preview)"   },        //10
+       { MUtils::OS::Version::WINDOWS_WN100, "Windows 10 or Windows Server 2016"             },        //10
        { MUtils::OS::Version::UNKNOWN_OPSYS, "N/A" }
 };
 
@@ -304,29 +306,88 @@ namespace MUtils
                        bool os_version_t::operator<= (const os_version_t &rhs) const { return (type == rhs.type) && ((versionMajor < rhs.versionMajor) || ((versionMajor == rhs.versionMajor) && (versionMinor <= rhs.versionMinor))); }
 
                        //Known Windows NT versions
-                       const os_version_t WINDOWS_WIN2K = { OS_WINDOWS,  5, 0 };       // 2000
-                       const os_version_t WINDOWS_WINXP = { OS_WINDOWS,  5, 1 };       // XP
-                       const os_version_t WINDOWS_XPX64 = { OS_WINDOWS,  5, 2 };       // XP_x64
-                       const os_version_t WINDOWS_VISTA = { OS_WINDOWS,  6, 0 };       // Vista
-                       const os_version_t WINDOWS_WIN70 = { OS_WINDOWS,  6, 1 };       // 7
-                       const os_version_t WINDOWS_WIN80 = { OS_WINDOWS,  6, 2 };       // 8
-                       const os_version_t WINDOWS_WIN81 = { OS_WINDOWS,  6, 3 };       // 8.1
-                       const os_version_t WINDOWS_WN100 = { OS_WINDOWS, 10, 0 };       // 10
+                       const os_version_t WINDOWS_WIN2K = { OS_WINDOWS,  5, 0,  2195, 0 };     // 2000
+                       const os_version_t WINDOWS_WINXP = { OS_WINDOWS,  5, 1,  2600, 0 };     // XP
+                       const os_version_t WINDOWS_XPX64 = { OS_WINDOWS,  5, 2,  3790, 0 };     // XP_x64
+                       const os_version_t WINDOWS_VISTA = { OS_WINDOWS,  6, 0,  6000, 0 };     // Vista
+                       const os_version_t WINDOWS_WIN70 = { OS_WINDOWS,  6, 1,  7600, 0 };     // 7
+                       const os_version_t WINDOWS_WIN80 = { OS_WINDOWS,  6, 2,  9200, 0 };     // 8
+                       const os_version_t WINDOWS_WIN81 = { OS_WINDOWS,  6, 3,  9600, 0 };     // 8.1
+                       const os_version_t WINDOWS_WN100 = { OS_WINDOWS, 10, 0, 10240, 0 };     // 10
 
                        //Unknown OS
-                       const os_version_t UNKNOWN_OPSYS = { OS_UNKNOWN, 0, 0 };        // N/A
+                       const os_version_t UNKNOWN_OPSYS = { OS_UNKNOWN, 0,  0,     0, 0 };     // N/A
                }
        }
 }
 
+static inline DWORD SAFE_ADD(const DWORD &a, const DWORD &b, const DWORD &limit = MAXDWORD)
+{
+       return ((a >= limit) || (b >= limit) || ((limit - a) <= b)) ? limit : (a + b);
+}
+
+
+static void initialize_os_version(OSVERSIONINFOEXW *const osInfo)
+{
+       memset(osInfo, 0, sizeof(OSVERSIONINFOEXW));
+       osInfo->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
+}
+
+static inline DWORD initialize_step_size(const DWORD &limit)
+{
+       DWORD result = 1;
+       while (result < limit)
+       {
+               result = SAFE_ADD(result, result);
+       }
+       return result;
+}
+
+static bool rtl_get_version(OSVERSIONINFOEXW *const osInfo)
+{
+       typedef LONG(__stdcall *RtlGetVersion)(LPOSVERSIONINFOEXW);
+       if (const HMODULE ntdll = GetModuleHandleW(L"ntdll"))
+       {
+               if (const RtlGetVersion pRtlGetVersion = (RtlGetVersion)GetProcAddress(ntdll, "RtlGetVersion"))
+               {
+                       initialize_os_version(osInfo);
+                       if (pRtlGetVersion(osInfo) == 0)
+                       {
+                               return true;
+                       }
+               }
+       }
+
+       //Fallback
+       initialize_os_version(osInfo);
+       return (GetVersionExW((LPOSVERSIONINFOW)osInfo) != FALSE);
+}
+
+static bool rtl_verify_version(OSVERSIONINFOEXW *const osInfo, const ULONG typeMask, const ULONGLONG condMask)
+{
+       typedef LONG(__stdcall *RtlVerifyVersionInfo)(LPOSVERSIONINFOEXW, ULONG, ULONGLONG);
+       if (const HMODULE ntdll = GetModuleHandleW(L"ntdll"))
+       {
+               if (const RtlVerifyVersionInfo pRtlVerifyVersionInfo = (RtlVerifyVersionInfo)GetProcAddress(ntdll, "RtlVerifyVersionInfo"))
+               {
+                       if (pRtlVerifyVersionInfo(osInfo, typeMask, condMask) == 0)
+                       {
+                               return true;
+                       }
+               }
+       }
+
+       //Fallback
+       return (VerifyVersionInfoW(osInfo, typeMask, condMask) != FALSE);
+}
+
 static bool verify_os_version(const DWORD major, const DWORD minor)
 {
        OSVERSIONINFOEXW osvi;
        DWORDLONG dwlConditionMask = 0;
+       initialize_os_version(&osvi);
 
        //Initialize the OSVERSIONINFOEX structure
-       memset(&osvi, 0, sizeof(OSVERSIONINFOEXW));
-       osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
        osvi.dwMajorVersion = major;
        osvi.dwMinorVersion = minor;
        osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
@@ -337,7 +398,7 @@ static bool verify_os_version(const DWORD major, const DWORD minor)
        VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID,   VER_EQUAL);
 
        // Perform the test
-       const BOOL ret = VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, dwlConditionMask);
+       const BOOL ret = rtl_verify_version(&osvi, VER_MAJORVERSION | VER_MINORVERSION | VER_PLATFORMID, dwlConditionMask);
 
        //Error checking
        if(!ret)
@@ -351,9 +412,71 @@ static bool verify_os_version(const DWORD major, const DWORD minor)
        return (ret != FALSE);
 }
 
-static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool *pbOverride)
+static bool verify_os_build(const DWORD build)
+{
+       OSVERSIONINFOEXW osvi;
+       DWORDLONG dwlConditionMask = 0;
+       initialize_os_version(&osvi);
+
+       //Initialize the OSVERSIONINFOEX structure
+       osvi.dwBuildNumber = build;
+       osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
+
+       //Initialize the condition mask
+       VER_SET_CONDITION(dwlConditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);
+       VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
+
+       // Perform the test
+       const BOOL ret = rtl_verify_version(&osvi, VER_BUILDNUMBER | VER_PLATFORMID, dwlConditionMask);
+
+       //Error checking
+       if (!ret)
+       {
+               if (GetLastError() != ERROR_OLD_WIN_VERSION)
+               {
+                       qWarning("VerifyVersionInfo() system call has failed!");
+               }
+       }
+
+       return (ret != FALSE);
+}
+
+static bool verify_os_spack(const WORD spack)
+{
+       OSVERSIONINFOEXW osvi;
+       DWORDLONG dwlConditionMask = 0;
+       initialize_os_version(&osvi);
+
+       //Initialize the OSVERSIONINFOEX structure
+       osvi.wServicePackMajor = spack;
+       osvi.dwPlatformId = VER_PLATFORM_WIN32_NT;
+
+       //Initialize the condition mask
+       VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
+       VER_SET_CONDITION(dwlConditionMask, VER_PLATFORMID, VER_EQUAL);
+
+       // Perform the test
+       const BOOL ret = rtl_verify_version(&osvi, VER_SERVICEPACKMAJOR | VER_PLATFORMID, dwlConditionMask);
+
+       //Error checking
+       if (!ret)
+       {
+               if (GetLastError() != ERROR_OLD_WIN_VERSION)
+               {
+                       qWarning("VerifyVersionInfo() system call has failed!");
+               }
+       }
+
+       return (ret != FALSE);
+}
+
+static bool get_real_os_version(unsigned int *const major, unsigned int *const minor, unsigned int *const build, unsigned int *const spack, bool *const pbOverride)
 {
-       *major = *minor = 0;
+       static const DWORD MAX_VERSION = MAXWORD;
+       static const DWORD MAX_BUILDNO = MAXINT;
+       static const DWORD MAX_SRVCPCK = MAXWORD;
+
+       *major = *minor = *build = *spack = 0U;
        *pbOverride = false;
        
        //Initialize local variables
@@ -362,7 +485,7 @@ static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool *
        osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
 
        //Try GetVersionEx() first
-       if(GetVersionExW((LPOSVERSIONINFOW)&osvi) == FALSE)
+       if(rtl_get_version(&osvi) == FALSE)
        {
                qWarning("GetVersionEx() has failed, cannot detect Windows version!");
                return false;
@@ -373,52 +496,88 @@ static bool get_real_os_version(unsigned int *major, unsigned int *minor, bool *
        {
                *major = osvi.dwMajorVersion;
                *minor = osvi.dwMinorVersion;
+               *build = osvi.dwBuildNumber;
+               *spack = osvi.wServicePackMajor;
        }
        else
        {
-               qWarning("Not running on Windows NT, unsupported operating system!");
-               return false;
+               if (verify_os_version(4, 0))
+               {
+                       *major = 4;
+                       *build = 1381;
+                       *pbOverride = true;
+               }
+               else
+               {
+                       qWarning("Not running on Windows NT, unsupported operating system!");
+                       return false;
+               }
        }
 
-       //Determine the real *major* version first
-       forever
+       //Major Version
+       for (DWORD nextMajor = (*major) + 1; nextMajor <= MAX_VERSION; nextMajor++)
        {
-               const DWORD nextMajor = (*major) + 1;
-               if(verify_os_version(nextMajor, 0))
+               if (verify_os_version(nextMajor, 0))
                {
-                       *pbOverride = true;
                        *major = nextMajor;
                        *minor = 0;
+                       *pbOverride = true;
                        continue;
                }
                break;
        }
 
-       //Now also determine the real *minor* version
-       forever
+       //Minor Version
+       for (DWORD nextMinor = (*minor) + 1; nextMinor <= MAX_VERSION; nextMinor++)
        {
-               const DWORD nextMinor = (*minor) + 1;
-               if(verify_os_version((*major), nextMinor))
+               if (verify_os_version((*major), nextMinor))
                {
-                       *pbOverride = true;
                        *minor = nextMinor;
+                       *pbOverride = true;
                        continue;
                }
                break;
        }
 
-       //Workaround for the mess that is sometimes referred to as "Windows 10"
-       if(((*major) > 6) || (((*major) == 6) && ((*minor) >= 2)))
+       //Build Version
+       if (verify_os_build(SAFE_ADD((*build), 1, MAX_BUILDNO)))
+       {
+               DWORD stepSize = initialize_step_size(MAX_BUILDNO);
+               for (DWORD nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO); (*build) < MAX_BUILDNO; nextBuildNo = SAFE_ADD((*build), stepSize, MAX_BUILDNO))
+               {
+                       if (verify_os_build(nextBuildNo))
+                       {
+                               *build = nextBuildNo;
+                               *pbOverride = true;
+                               continue;
+                       }
+                       if (stepSize > 1)
+                       {
+                               stepSize = stepSize / 2;
+                               continue;
+                       }
+                       break;
+               }
+       }
+
+       //Service Pack
+       if (verify_os_spack(SAFE_ADD((*spack), 1, MAX_SRVCPCK)))
        {
-               quint16 kernel32_major, kernel32_minor;
-               if(MUtils::OS::get_file_version(QLatin1String("kernel32"), &kernel32_major, &kernel32_minor))
+               DWORD stepSize = initialize_step_size(MAX_SRVCPCK);
+               for (DWORD nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK); (*spack) < MAX_SRVCPCK; nextSPackNo = SAFE_ADD((*spack), stepSize, MAX_SRVCPCK))
                {
-                       if((kernel32_major > (*major)) || ((kernel32_major == (*major)) && (kernel32_minor > (*minor))))
+                       if (verify_os_spack(nextSPackNo))
                        {
-                               *major = kernel32_major;
-                               *minor = kernel32_minor;
+                               *build = nextSPackNo;
                                *pbOverride = true;
+                               continue;
+                       }
+                       if (stepSize > 1)
+                       {
+                               stepSize = stepSize / 2;
+                               continue;
                        }
+                       break;
                }
        }
 
@@ -445,17 +604,19 @@ const MUtils::OS::Version::os_version_t &MUtils::OS::os_version(void)
        }
 
        //Detect OS version
-       unsigned int major, minor; bool overrideFlg;
-       if(get_real_os_version(&major, &minor, &overrideFlg))
+       unsigned int major, minor, build, spack; bool overrideFlg;
+       if(get_real_os_version(&major, &minor, &build, &spack, &overrideFlg))
        {
                g_os_version_info.type = Version::OS_WINDOWS;
                g_os_version_info.versionMajor = major;
                g_os_version_info.versionMinor = minor;
+               g_os_version_info.versionBuild = build;
+               g_os_version_info.versionSPack = spack;
                g_os_version_info.overrideFlag = overrideFlg;
        }
        else
        {
-               qWarning("Failed to determin the operating system version!");
+               qWarning("Failed to determine the operating system version!");
        }
 
        //Completed
@@ -486,17 +647,8 @@ static QReadWriteLock g_wine_lock;
 
 static const bool detect_wine(void)
 {
-       bool is_wine = false;
-       
-       QLibrary ntdll("ntdll.dll");
-       if(ntdll.load())
-       {
-               if(ntdll.resolve("wine_nt_to_unix_file_name") != NULL) is_wine = true;
-               if(ntdll.resolve("wine_get_version")          != NULL) is_wine = true;
-               ntdll.unload();
-       }
-
-       return is_wine;
+       void *const ptr = MUtils::Win32Utils::resolve<void*>(QLatin1String("ntdll"), QLatin1String("wine_get_version"));
+       return (ptr != NULL);
 }
 
 const bool &MUtils::OS::running_on_wine(void)
@@ -531,11 +683,9 @@ const bool &MUtils::OS::running_on_wine(void)
 
 typedef QMap<size_t, QString> KFMap;
 typedef HRESULT (WINAPI *SHGetKnownFolderPath_t)(const GUID &rfid, DWORD dwFlags, HANDLE hToken, PWSTR *ppszPath);
-typedef HRESULT (WINAPI *SHGetFolderPath_t)(HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
+typedef HRESULT (WINAPI *SHGetFolderPath_t)     (HWND hwndOwner, int nFolder, HANDLE hToken, DWORD dwFlags, LPWSTR pszPath);
 
 static QScopedPointer<KFMap>  g_known_folders_map;
-static SHGetKnownFolderPath_t g_known_folders_fpGetKnownFolderPath;
-static SHGetFolderPath_t      g_known_folders_fpGetFolderPath;
 static QReadWriteLock         g_known_folders_lock;
 
 const QString &MUtils::OS::known_folder(known_folder_t folder_id)
@@ -598,22 +748,16 @@ const QString &MUtils::OS::known_folder(known_folder_t folder_id)
        //Initialize on first call
        if(g_known_folders_map.isNull())
        {
-               QLibrary shell32("shell32.dll");
-               if(shell32.load())
-               {
-                       g_known_folders_fpGetFolderPath =      (SHGetFolderPath_t)      shell32.resolve("SHGetFolderPathW");
-                       g_known_folders_fpGetKnownFolderPath = (SHGetKnownFolderPath_t) shell32.resolve("SHGetKnownFolderPath");
-               }
                g_known_folders_map.reset(new QMap<size_t, QString>());
        }
 
        QString folderPath;
 
        //Now try to get the folder path!
-       if(g_known_folders_fpGetKnownFolderPath)
+       if(const SHGetKnownFolderPath_t known_folders_fpGetKnownFolderPath = MUtils::Win32Utils::resolve<SHGetKnownFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetKnownFolderPath")))
        {
                WCHAR *path = NULL;
-               if(g_known_folders_fpGetKnownFolderPath(s_folders[folderId].guid, KF_FLAG_CREATE, NULL, &path) == S_OK)
+               if(known_folders_fpGetKnownFolderPath(s_folders[folderId].guid, KF_FLAG_CREATE, NULL, &path) == S_OK)
                {
                        //MessageBoxW(0, path, L"SHGetKnownFolderPath", MB_TOPMOST);
                        QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path)));
@@ -624,10 +768,10 @@ const QString &MUtils::OS::known_folder(known_folder_t folder_id)
                        CoTaskMemFree(path);
                }
        }
-       else if(g_known_folders_fpGetFolderPath)
+       else if(const SHGetFolderPath_t known_folders_fpGetFolderPath = MUtils::Win32Utils::resolve<SHGetFolderPath_t>(QLatin1String("shell32"), QLatin1String("SHGetFolderPathW")))
        {
                QScopedArrayPointer<WCHAR> path(new WCHAR[4096]);
-               if(g_known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
+               if(known_folders_fpGetFolderPath(NULL, s_folders[folderId].csidl | CSIDL_FLAG_CREATE, NULL, NULL, path.data()) == S_OK)
                {
                        //MessageBoxW(0, path, L"SHGetFolderPathW", MB_TOPMOST);
                        QDir folderTemp = QDir(QDir::fromNativeSeparators(MUTILS_QSTR(path.data())));
@@ -721,10 +865,6 @@ quint64 MUtils::OS::current_file_time(void)
 
 typedef DWORD(_stdcall *GetPathNameByHandleFun)(HANDLE hFile, LPWSTR lpszFilePath, DWORD cchFilePath, DWORD dwFlags);
 
-static QReadWriteLock           g_getFilePath_lock;
-static QScopedPointer<QLibrary> g_getFilePath_kernel32;
-static GetPathNameByHandleFun   g_getFilePath_prt = NULL;
-
 static QString get_file_path_drive_list(void)
 {
        QString list;
@@ -749,9 +889,9 @@ static QString get_file_path_drive_list(void)
        return list;
 }
 
-static QString &get_file_path_translate(QString &path)
+static void get_file_path_translate(QString &path)
 {
-       static const DWORD BUFSIZE = 4096;
+       static const DWORD BUFSIZE = 2048;
        wchar_t buffer[BUFSIZE], drive[3];
 
        const QString driveList = get_file_path_drive_list();
@@ -769,8 +909,6 @@ static QString &get_file_path_translate(QString &path)
                        }
                }
        }
-
-       return path;
 }
 
 static QString get_file_path_fallback(const HANDLE &hFile)
@@ -780,72 +918,45 @@ static QString get_file_path_fallback(const HANDLE &hFile)
        const HANDLE hFileMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 1, NULL);
        if (hFileMap)
        {
-               void* pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
+               void *const pMem = MapViewOfFile(hFileMap, FILE_MAP_READ, 0, 0, 1);
                if (pMem)
                {
-                       static const DWORD BUFSIZE = 4096;
-                       wchar_t buffer[BUFSIZE];
-                       if (GetMappedFileNameW(GetCurrentProcess(), pMem, buffer, BUFSIZE))
+                       static const size_t BUFFSIZE = 2048;
+                       wchar_t buffer[BUFFSIZE];
+                       if (GetMappedFileNameW(GetCurrentProcess(), pMem, buffer, BUFFSIZE) > 0)
                        {
-                               filePath = get_file_path_translate(MUTILS_QSTR(buffer));
+                               filePath = MUTILS_QSTR(buffer);
                        }
                        UnmapViewOfFile(pMem);
                }
                CloseHandle(hFileMap);
        }
 
-       return filePath;
-}
-
-static bool get_file_path_init()
-{
-       QWriteLocker writeLock(&g_getFilePath_lock);
-       if (g_getFilePath_prt)
-       {
-               return true; /*already initialized*/
-       }
-
-       if (g_getFilePath_kernel32.isNull())
+       if (!filePath.isEmpty())
        {
-               g_getFilePath_kernel32.reset(new QLibrary("kernel32.dll"));
+               get_file_path_translate(filePath);
        }
 
-       if (!g_getFilePath_kernel32->isLoaded())
-       {
-               if (!g_getFilePath_kernel32->load())
-               {
-                       return false; /*faild to load kernel32.dll*/
-               }
-       }
-
-       g_getFilePath_prt = (GetPathNameByHandleFun) g_getFilePath_kernel32->resolve("GetFinalPathNameByHandleW");
-       return (g_getFilePath_prt != NULL);
+       return filePath;
 }
 
 QString MUtils::OS::get_file_path(const int &fd)
 {
        if (fd >= 0)
        {
-               QReadLocker readLock(&g_getFilePath_lock);
-
-               if (!g_getFilePath_prt)
+               const GetPathNameByHandleFun getPathNameByHandleFun = MUtils::Win32Utils::resolve<GetPathNameByHandleFun>(QLatin1String("kernel32"), QLatin1String("GetFinalPathNameByHandleW"));
+               if (!getPathNameByHandleFun)
                {
-                       readLock.unlock();
-                       if (!get_file_path_init())
-                       {
-                               qWarning("MUtils::OS::get_file_path() --> fallback!");
-                               return get_file_path_fallback((HANDLE)_get_osfhandle(fd));
-                       }
-                       readLock.relock();
+                       return get_file_path_fallback((HANDLE)_get_osfhandle(fd));
                }
 
                const HANDLE handle = (HANDLE) _get_osfhandle(fd);
-               const DWORD len = g_getFilePath_prt(handle, NULL, 0, FILE_NAME_OPENED);
+               const DWORD len = getPathNameByHandleFun(handle, NULL, 0, FILE_NAME_OPENED);
                if (len > 0)
                {
                        if (wchar_t *const buffer = (wchar_t*)_malloca(sizeof(wchar_t) * len))
                        {
-                               const DWORD ret = g_getFilePath_prt(handle, buffer, len, FILE_NAME_OPENED);
+                               const DWORD ret = getPathNameByHandleFun(handle, buffer, len, FILE_NAME_OPENED);
                                if ((ret > 0) && (ret < len))
                                {
                                        const QString path(MUTILS_QSTR(buffer));
@@ -1050,15 +1161,61 @@ void MUtils::OS::sleep_ms(const size_t &duration)
 // EXECUTABLE CHECK
 ///////////////////////////////////////////////////////////////////////////////
 
+static int g_library_as_image_resource_supported = -1;
+static QReadWriteLock g_library_as_image_resource_supported_lock;
+
+static bool library_as_image_resource_supported()
+{
+       QReadLocker readLocker(&g_library_as_image_resource_supported_lock);
+       if (g_library_as_image_resource_supported >= 0)
+       {
+               return (g_library_as_image_resource_supported > 0);
+       }
+
+       readLocker.unlock();
+       QWriteLocker writeLocker(&g_library_as_image_resource_supported_lock);
+
+       if (g_library_as_image_resource_supported < 0)
+       {
+               g_library_as_image_resource_supported = 0;
+               OSVERSIONINFOEXW osvi;
+               if (rtl_get_version(&osvi))
+               {
+                       if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && (osvi.dwMajorVersion >= 6U))
+                       {
+                               g_library_as_image_resource_supported = 1;
+                       }
+               }
+       }
+
+       return (g_library_as_image_resource_supported > 0);
+}
+
 bool MUtils::OS::is_executable_file(const QString &path)
 {
-       bool bIsExecutable = false;
        DWORD binaryType;
        if(GetBinaryType(MUTILS_WCHR(QDir::toNativeSeparators(path)), &binaryType))
        {
-               bIsExecutable = (binaryType == SCS_32BIT_BINARY || binaryType == SCS_64BIT_BINARY);
+               return ((binaryType == SCS_32BIT_BINARY) || (binaryType == SCS_64BIT_BINARY));
        }
-       return bIsExecutable;
+
+       const DWORD errorCode = GetLastError();
+       qWarning("GetBinaryType() failed with error: 0x%08X", errorCode);
+       return false;
+}
+
+bool MUtils::OS::is_library_file(const QString &path)
+{
+       const DWORD flags = library_as_image_resource_supported() ? (LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE) : (LOAD_LIBRARY_AS_DATAFILE | DONT_RESOLVE_DLL_REFERENCES);
+       if (const HMODULE hMod = LoadLibraryEx(MUTILS_WCHR(QDir::toNativeSeparators(path)), NULL, flags))
+       {
+               FreeLibrary(hMod);
+               return true;
+       }
+
+       const DWORD errorCode = GetLastError();
+       qWarning("LoadLibraryEx() failed with error: 0x%08X", errorCode);
+       return false;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1129,12 +1286,127 @@ bool MUtils::OS::free_diskspace(const QString &path, quint64 &freeSpace)
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+// DRIVE TYPE
+///////////////////////////////////////////////////////////////////////////////
+
+static wchar_t get_drive_letter(const QString &path)
+{
+       QString nativePath = QDir::toNativeSeparators(path);
+       while (nativePath.startsWith("\\\\?\\") || nativePath.startsWith("\\\\.\\"))
+       {
+               nativePath = QDir::toNativeSeparators(nativePath.mid(4));
+       }
+       if ((path.length() > 1) && (path[1] == QLatin1Char(':')))
+       {
+               const wchar_t letter = static_cast<wchar_t>(path[0].unicode());
+               if (((letter >= 'A') && (letter <= 'Z')) || ((letter >= 'a') && (letter <= 'z')))
+               {
+                       return towupper(letter);
+               }
+       }
+       return L'\0'; /*invalid path spec*/
+}
+
+static QSet<DWORD> get_physical_drive_ids(const wchar_t drive_letter)
+{
+       QSet<DWORD> physical_drives;
+       wchar_t driveName[8];
+       _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:", drive_letter);
+       const HANDLE hDrive = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
+       if (hDrive && (hDrive != INVALID_HANDLE_VALUE))
+       {
+               const size_t BUFF_SIZE = sizeof(VOLUME_DISK_EXTENTS) + (32U * sizeof(DISK_EXTENT));
+               VOLUME_DISK_EXTENTS *const diskExtents = (VOLUME_DISK_EXTENTS*)_malloca(BUFF_SIZE);
+               DWORD dwSize;
+               if (DeviceIoControl(hDrive, IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS, NULL, 0, (LPVOID)diskExtents, (DWORD)BUFF_SIZE, (LPDWORD)&dwSize, NULL))
+               {
+                       for (DWORD index = 0U; index < diskExtents->NumberOfDiskExtents; ++index)
+                       {
+                               physical_drives.insert(diskExtents->Extents[index].DiskNumber);
+                       }
+               }
+               _freea(diskExtents);
+               CloseHandle(hDrive);
+       }
+       return physical_drives;
+}
+
+static bool incurs_seek_penalty(const DWORD device_id)
+{
+       wchar_t driveName[24];
+       _snwprintf_s(driveName, 24, _TRUNCATE, L"\\\\?\\PhysicalDrive%u", device_id);
+       const HANDLE hDevice = CreateFileW(driveName, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
+       bool seeking_penalty = true;
+       if (hDevice && (hDevice != INVALID_HANDLE_VALUE))
+       {
+               STORAGE_PROPERTY_QUERY spq;
+               DEVICE_SEEK_PENALTY_DESCRIPTOR dspd;
+               memset(&spq, 0, sizeof(STORAGE_PROPERTY_QUERY));
+               spq.PropertyId = (STORAGE_PROPERTY_ID)StorageDeviceSeekPenaltyProperty;
+               spq.QueryType = PropertyStandardQuery;
+               DWORD dwSize;
+               if (DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, (LPVOID)&spq, (DWORD)sizeof(spq), (LPVOID)&dspd, (DWORD)sizeof(dspd), (LPDWORD)&dwSize, NULL))
+               {
+                       seeking_penalty = dspd.IncursSeekPenalty;
+               }
+               CloseHandle(hDevice);
+       }
+       return seeking_penalty;
+}
+
+static bool is_fast_seeking_drive(const wchar_t drive_letter)
+{
+       bool fast_seeking = false;
+       const QSet<DWORD> physical_drive_ids = get_physical_drive_ids(drive_letter);
+       if (!physical_drive_ids.empty())
+       {
+               fast_seeking = true;
+               for (QSet<DWORD>::const_iterator iter = physical_drive_ids.constBegin(); iter != physical_drive_ids.constEnd(); ++iter)
+               {
+                       fast_seeking = fast_seeking && (!incurs_seek_penalty(*iter));
+               }
+       }
+       return fast_seeking;
+}
+
+MUtils::OS::drive_type_t MUtils::OS::get_drive_type(const QString &path, bool *fast_seeking)
+{
+       drive_type_t driveType = DRIVE_TYPE_ERR;
+       const wchar_t driveLetter = get_drive_letter(path);
+       if (driveLetter)
+       {
+               wchar_t driveName[8];
+               _snwprintf_s(driveName, 8, _TRUNCATE, L"\\\\.\\%c:\\", driveLetter);
+               switch (GetDriveTypeW(driveName))
+               {
+                       case DRIVE_REMOVABLE: driveType = DRIVE_TYPE_FDD; break;
+                       case DRIVE_FIXED:     driveType = DRIVE_TYPE_HDD; break;
+                       case DRIVE_REMOTE:    driveType = DRIVE_TYPE_NET; break;
+                       case DRIVE_CDROM:     driveType = DRIVE_TYPE_OPT; break;
+                       case DRIVE_RAMDISK:   driveType = DRIVE_TYPE_RAM; break;
+               }
+       }
+       if (fast_seeking)
+       {
+               if (driveType == DRIVE_TYPE_HDD)
+               {
+                       *fast_seeking = is_fast_seeking_drive(driveLetter);
+               }
+               else
+               {
+                       *fast_seeking = (driveType == DRIVE_TYPE_RAM);
+               }
+       }
+       return driveType;
+}
+
+///////////////////////////////////////////////////////////////////////////////
 // SHELL OPEN
 ///////////////////////////////////////////////////////////////////////////////
 
 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const QString &parameters, const QString &directory, const bool explore)
 {
-       return ((int) ShellExecuteW((parent ? parent->winId() : NULL), (explore ? L"explore" : L"open"), MUTILS_WCHR(url), ((!parameters.isEmpty()) ? MUTILS_WCHR(parameters) : NULL), ((!directory.isEmpty()) ? MUTILS_WCHR(directory) : NULL), SW_SHOW)) > 32;
+       return ((int) ShellExecuteW((parent ? reinterpret_cast<HWND>(parent->winId()) : NULL), (explore ? L"explore" : L"open"), MUTILS_WCHR(url), ((!parameters.isEmpty()) ? MUTILS_WCHR(parameters) : NULL), ((!directory.isEmpty()) ? MUTILS_WCHR(directory) : NULL), SW_SHOW)) > 32;
 }
 
 bool MUtils::OS::shell_open(const QWidget *parent, const QString &url, const bool explore)
@@ -1263,10 +1535,26 @@ bool MUtils::OS::change_process_priority(const QProcess *proc, const int priorit
 // PROCESS ID
 ///////////////////////////////////////////////////////////////////////////////
 
+quint32 MUtils::OS::process_id(void)
+{
+       return GetCurrentProcessId();
+}
+
 quint32 MUtils::OS::process_id(const QProcess *const proc)
 {
        PROCESS_INFORMATION *procInf = proc->pid();
-       return (procInf) ? procInf->dwProcessId : NULL;
+       return (procInf) ? procInf->dwProcessId : 0;
+}
+
+quint32 MUtils::OS::thread_id(void)
+{
+       return GetCurrentThreadId();
+}
+
+quint32 MUtils::OS::thread_id(const QProcess *const proc)
+{
+       PROCESS_INFORMATION *procInf = proc->pid();
+       return (procInf) ? procInf->dwThreadId : 0;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -1414,65 +1702,87 @@ void MUtils::OS::shell_change_notification(void)
 typedef BOOL (_stdcall *Wow64DisableWow64FsRedirectionFun)(void *OldValue);
 typedef BOOL (_stdcall *Wow64RevertWow64FsRedirectionFun )(void *OldValue);
 
-static QReadWriteLock                    g_wow64redir_lock;
-static QScopedPointer<QLibrary>          g_wow64redir_kernel32;
-static Wow64DisableWow64FsRedirectionFun g_wow64redir_disable = NULL;
-static Wow64RevertWow64FsRedirectionFun  g_wow64redir_revert  = NULL;
-
-static bool wow64fsredir_init()
+bool MUtils::OS::wow64fsredir_disable(void *oldValue)
 {
-       QWriteLocker writeLock(&g_wow64redir_lock);
-       if(g_wow64redir_disable && g_wow64redir_revert)
-       {
-               return true; /*already initialized*/
-       }
-
-       if(g_wow64redir_kernel32.isNull())
+       const Wow64DisableWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64DisableWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64DisableWow64FsRedirection"));
+       if(wow64redir_disable)
        {
-               g_wow64redir_kernel32.reset(new QLibrary("kernel32.dll"));
+               if (wow64redir_disable(oldValue))
+               {
+                       return true;
+               }
        }
+       return false;
+}
 
-       if(!g_wow64redir_kernel32->isLoaded())
+bool MUtils::OS::wow64fsredir_revert(void *oldValue)
+{
+       const Wow64RevertWow64FsRedirectionFun wow64redir_disable = MUtils::Win32Utils::resolve<Wow64RevertWow64FsRedirectionFun>(QLatin1String("kernel32"), QLatin1String("Wow64RevertWow64FsRedirection"));
+       if (wow64redir_disable)
        {
-               if(!g_wow64redir_kernel32->load())
+               if (wow64redir_disable(oldValue))
                {
-                       return false; /*faild to load kernel32.dll*/
+                       return true;
                }
        }
-
-       g_wow64redir_disable = (Wow64DisableWow64FsRedirectionFun) g_wow64redir_kernel32->resolve("Wow64DisableWow64FsRedirection");
-       g_wow64redir_revert  = (Wow64RevertWow64FsRedirectionFun)  g_wow64redir_kernel32->resolve("Wow64RevertWow64FsRedirection");
-
-       return (g_wow64redir_disable && g_wow64redir_revert);
+       return false;
 }
 
-#define WOW64FSREDIR_INIT(RDLOCK) do \
-{ \
-       while(!(g_wow64redir_disable && g_wow64redir_revert)) \
-       { \
-               (RDLOCK).unlock(); \
-               if(!wow64fsredir_init()) return false; \
-               (RDLOCK).relock(); \
-       } \
-} \
-while(0)
+///////////////////////////////////////////////////////////////////////////////
+// DEBUGGER CHECK
+///////////////////////////////////////////////////////////////////////////////
 
-bool MUtils::OS::wow64fsredir_disable(void *oldValue)
+QString MUtils::OS::get_envvar(const QString &name)
 {
-       QReadLocker readLock(&g_wow64redir_lock);
-       WOW64FSREDIR_INIT(readLock);
-       if(g_wow64redir_disable(oldValue))
+       wchar_t *buffer = NULL;
+       size_t requiredSize = 0, buffSize = 0;
+       QString result;
+
+       forever
        {
-               return true;
+               //Adjust the buffer size as required first!
+               if (buffSize < requiredSize)
+               {
+                       if (buffer)
+                       {
+                               _freea(buffer);
+                       }
+                       if (!(buffer = (wchar_t*)_malloca(sizeof(wchar_t) * requiredSize)))
+                       {
+                               break; /*out of memory error!*/
+                       }
+                       buffSize = requiredSize;
+               }
+
+               //Try to fetch the environment variable now
+               const errno_t error = _wgetenv_s(&requiredSize, buffer, buffSize, MUTILS_WCHR(name));
+               if(!error)
+               {
+                       if (requiredSize > 0)
+                       {
+                               result = MUTILS_QSTR(buffer);
+                       }
+                       break; /*done*/
+               }
+               else if (error != ERANGE)
+               {
+                       break; /*somethging else went wrong!*/
+               }
        }
-       return false;
+       
+       if (buffer)
+       {
+               _freea(buffer);
+               buffSize = 0;
+               buffer = NULL;
+       }
+
+       return result;
 }
 
-bool MUtils::OS::wow64fsredir_revert(void *oldValue)
+bool MUtils::OS::set_envvar(const QString &name, const QString &value)
 {
-       QReadLocker readLock(&g_wow64redir_lock);
-       WOW64FSREDIR_INIT(readLock);
-       if(g_wow64redir_revert(oldValue))
+       if (!_wputenv_s(MUTILS_WCHR(name), MUTILS_WCHR(value)))
        {
                return true;
        }
@@ -1528,7 +1838,7 @@ static volatile bool g_debug_check = check_debugger_helper();
 ///////////////////////////////////////////////////////////////////////////////
 
 static MUtils::Internal::CriticalSection g_fatal_exit_lock;
-static volatile bool g_fatal_exit_flag = true;
+static QAtomicInt g_fatal_exit_flag;
 
 static DWORD WINAPI fatal_exit_helper(LPVOID lpParameter)
 {
@@ -1540,13 +1850,11 @@ void MUtils::OS::fatal_exit(const wchar_t* const errorMessage)
 {
        g_fatal_exit_lock.enter();
        
-       if(!g_fatal_exit_flag)
+       if(!g_fatal_exit_flag.testAndSetOrdered(0, 1))
        {
                return; /*prevent recursive invocation*/
        }
 
-       g_fatal_exit_flag = false;
-
        if(g_main_thread_id != GetCurrentThreadId())
        {
                if(HANDLE hThreadMain = OpenThread(THREAD_SUSPEND_RESUME, FALSE, g_main_thread_id))
@@ -1555,10 +1863,14 @@ void MUtils::OS::fatal_exit(const wchar_t* const errorMessage)
                }
        }
 
-       if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID) errorMessage, 0, NULL))
+       if(HANDLE hThread = CreateThread(NULL, 0, fatal_exit_helper, (LPVOID)errorMessage, 0, NULL))
        {
                WaitForSingleObject(hThread, INFINITE);
        }
+       else
+       {
+               fatal_exit_helper((LPVOID)errorMessage);
+       }
 
        for(;;)
        {