diff options
Diffstat (limited to 'src/corelib/io/qstorageinfo_win.cpp')
| -rw-r--r-- | src/corelib/io/qstorageinfo_win.cpp | 193 |
1 files changed, 147 insertions, 46 deletions
diff --git a/src/corelib/io/qstorageinfo_win.cpp b/src/corelib/io/qstorageinfo_win.cpp index 8a3db90f87..3ee1df9f3c 100644 --- a/src/corelib/io/qstorageinfo_win.cpp +++ b/src/corelib/io/qstorageinfo_win.cpp @@ -1,54 +1,22 @@ -/**************************************************************************** -** -** Copyright (C) 2014 Ivan Komissarov <ABBAPOH@gmail.com> -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2014 Ivan Komissarov <ABBAPOH@gmail.com> +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qstorageinfo_p.h" #include <QtCore/qdir.h> #include <QtCore/qfileinfo.h> +#include <QtCore/qmutex.h> #include <QtCore/qvarlengtharray.h> #include "qfilesystementry_p.h" +#include "private/qsystemlibrary_p.h" -#include <qt_windows.h> +#include "qntdll_p.h" QT_BEGIN_NAMESPACE +using namespace Qt::StringLiterals; + static const int defaultBufferSize = MAX_PATH + 1; static QString canonicalPath(const QString &rootPath) @@ -57,16 +25,16 @@ static QString canonicalPath(const QString &rootPath) if (path.isEmpty()) return path; - if (path.startsWith(QLatin1String("\\\\?\\"))) + if (path.startsWith("\\\\?\\"_L1)) path.remove(0, 4); - if (path.length() < 2 || path.at(1) != QLatin1Char(':')) + if (path.length() < 2 || path.at(1) != u':') return QString(); path[0] = path[0].toUpper(); if (!(path.at(0).unicode() >= 'A' && path.at(0).unicode() <= 'Z')) return QString(); - if (!path.endsWith(QLatin1Char('\\'))) - path.append(QLatin1Char('\\')); + if (!path.endsWith(u'\\')) + path.append(u'\\'); return path; } @@ -134,6 +102,9 @@ void QStorageInfoPrivate::doStat() return; device = getDevice(rootPath); retrieveDiskFreeSpace(); + + if (!queryStorageProperty()) + queryFileFsSectorSizeInformation(); } void QStorageInfoPrivate::retrieveVolumeInfo() @@ -192,16 +163,146 @@ QList<QStorageInfo> QStorageInfoPrivate::mountedVolumes() if (!drive.rootPath().isEmpty()) // drive exists, but not mounted volumes.append(drive); } - driveName[0] = driveName[0].unicode() + 1; + driveName[0] = QChar(driveName[0].unicode() + 1); driveBits = driveBits >> 1; } return volumes; } -QStorageInfo QStorageInfoPrivate::root() +bool QStorageInfoPrivate::queryStorageProperty() +{ + QString path = QDir::toNativeSeparators(uR"(\\.\)" + rootPath); + if (path.endsWith(u'\\')) + path.chop(1); + + HANDLE handle = CreateFile(reinterpret_cast<const wchar_t *>(path.utf16()), + 0, // no access to the drive + FILE_SHARE_READ | FILE_SHARE_WRITE, + nullptr, + OPEN_EXISTING, + 0, + nullptr); + if (handle == INVALID_HANDLE_VALUE) + return false; + + STORAGE_PROPERTY_QUERY spq; + memset(&spq, 0, sizeof(spq)); + spq.PropertyId = StorageAccessAlignmentProperty; + spq.QueryType = PropertyStandardQuery; + + STORAGE_ACCESS_ALIGNMENT_DESCRIPTOR saad; + memset(&saad, 0, sizeof(saad)); + + DWORD bytes = 0; + BOOL result = DeviceIoControl(handle, + IOCTL_STORAGE_QUERY_PROPERTY, + &spq, sizeof(spq), + &saad, sizeof(saad), + &bytes, + nullptr); + CloseHandle(handle); + if (result) + blockSize = int(saad.BytesPerPhysicalSector); + return result; +} + +struct Helper +{ + QBasicMutex mutex; + QSystemLibrary ntdll {u"ntdll"_s}; +}; +Q_GLOBAL_STATIC(Helper, gNtdllHelper) + +inline QFunctionPointer resolveSymbol(QSystemLibrary *ntdll, const char *name) { - return QStorageInfo(QDir::fromNativeSeparators(QFile::decodeName(qgetenv("SystemDrive")))); + QFunctionPointer symbolFunctionPointer = ntdll->resolve(name); + if (Q_UNLIKELY(!symbolFunctionPointer)) + qWarning("Failed to resolve the symbol: %s", name); + return symbolFunctionPointer; +} + +#define GENERATE_SYMBOL(symbolName, returnType, ...) \ +using Qt##symbolName = returnType (NTAPI *) (__VA_ARGS__); \ +static Qt##symbolName qt##symbolName = nullptr; + +#define RESOLVE_SYMBOL(name) \ + do { \ + qt##name = reinterpret_cast<Qt##name>(resolveSymbol(ntdll, #name)); \ + if (!qt##name) \ + return false; \ + } while (false) + +GENERATE_SYMBOL(RtlInitUnicodeString, void, PUNICODE_STRING, PCWSTR); +GENERATE_SYMBOL(NtCreateFile, NTSTATUS, PHANDLE, ACCESS_MASK, POBJECT_ATTRIBUTES, + PIO_STATUS_BLOCK, PLARGE_INTEGER, ULONG, ULONG, ULONG, ULONG, PVOID, ULONG); +GENERATE_SYMBOL(NtQueryVolumeInformationFile, NTSTATUS, HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG, + FS_INFORMATION_CLASS); + +void QStorageInfoPrivate::queryFileFsSectorSizeInformation() +{ + static bool symbolsResolved = [](auto ntdllHelper) { + QMutexLocker locker(&ntdllHelper->mutex); + auto ntdll = &ntdllHelper->ntdll; + if (!ntdll->isLoaded()) { + if (!ntdll->load()) { + qWarning("Unable to load ntdll.dll."); + return false; + } + } + + RESOLVE_SYMBOL(RtlInitUnicodeString); + RESOLVE_SYMBOL(NtCreateFile); + RESOLVE_SYMBOL(NtQueryVolumeInformationFile); + + return true; + }(gNtdllHelper()); + if (!symbolsResolved) + return; + + FILE_FS_SECTOR_SIZE_INFORMATION ffssi; + memset(&ffssi, 0, sizeof(ffssi)); + + HANDLE handle = nullptr; + + OBJECT_ATTRIBUTES attrs; + memset(&attrs, 0, sizeof(attrs)); + + IO_STATUS_BLOCK isb; + memset(&isb, 0, sizeof(isb)); + + QString path = QDir::toNativeSeparators(uR"(\??\\)" + rootPath); + if (!path.endsWith(u'\\')) + path.append(u'\\'); + + UNICODE_STRING name; + qtRtlInitUnicodeString(&name, reinterpret_cast<const wchar_t *>(path.utf16())); + + InitializeObjectAttributes(&attrs, &name, 0, nullptr, nullptr); + + NTSTATUS status = qtNtCreateFile(&handle, + FILE_READ_ATTRIBUTES, + &attrs, + &isb, + nullptr, + FILE_ATTRIBUTE_NORMAL, + FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, + FILE_OPEN, + 0, + nullptr, + 0); + if (!NT_SUCCESS(status)) + return; + + memset(&isb, 0, sizeof(isb)); + status = qtNtQueryVolumeInformationFile(handle, + &isb, + &ffssi, + sizeof(ffssi), + FS_INFORMATION_CLASS(10)); // FileFsSectorSizeInformation + CloseHandle(handle); + if (NT_SUCCESS(status)) + blockSize = ffssi.PhysicalBytesPerSectorForAtomicity; } QT_END_NAMESPACE |