qfsfileengine.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qfsfileengine_p.h"
#include "qfsfileengine_iterator_p.h"
#include "qfilesystemengine_p.h"
#include "qdatetime.h"
#include "qdiriterator.h"
#include "qset.h"
#include <QtCore/qdebug.h>
 
#ifndef QT_NO_FSFILEENGINE
 
#include <errno.h>
#if defined(Q_OS_UNIX)
#include "private/qcore_unix_p.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#if defined(Q_OS_DARWIN)
# include <private/qcore_mac_p.h>
#endif
 
QT_BEGIN_NAMESPACE
 
using namespace Qt::StringLiterals;
 
#ifdef Q_OS_WIN
#  ifndef S_ISREG
#    define S_ISREG(x)   (((x) & S_IFMT) == S_IFREG)
#  endif
#  ifndef S_ISCHR
#    define S_ISCHR(x)   (((x) & S_IFMT) == S_IFCHR)
#  endif
#  ifndef S_ISFIFO
#    define S_ISFIFO(x) false
#  endif
#  ifndef S_ISSOCK
#    define S_ISSOCK(x) false
#  endif
#  ifndef INVALID_FILE_ATTRIBUTES
#    define INVALID_FILE_ATTRIBUTES (DWORD (-1))
#  endif
#endif
 
#ifdef Q_OS_WIN
// on Windows, read() and write() use int and unsigned int
typedef int SignedIOType;
typedef unsigned int UnsignedIOType;
#else
typedef ssize_t SignedIOType;
typedef size_t UnsignedIOType;
static_assert(sizeof(SignedIOType) == sizeof(UnsignedIOType),
                  "Unsupported: read/write return a type with different size as the len parameter");
#endif
 
//**************** QFSFileEnginePrivate
QFSFileEnginePrivate::QFSFileEnginePrivate() : QAbstractFileEnginePrivate()
{
    init();
}
 
void QFSFileEnginePrivate::init()
{
    is_sequential = 0;
    tried_stat = 0;
    need_lstat = 1;
    is_link = 0;
    openMode = QIODevice::NotOpen;
    fd = -1;
    fh = nullptr;
    lastIOCommand = IOFlushCommand;
    lastFlushFailed = false;
    closeFileHandle = false;
#ifdef Q_OS_WIN
    fileAttrib = INVALID_FILE_ATTRIBUTES;
    fileHandle = INVALID_HANDLE_VALUE;
    mapHandle = NULL;
    cachedFd = -1;
#endif
}
 
QFSFileEngine::QFSFileEngine(const QString &file)
    : QAbstractFileEngine(*new QFSFileEnginePrivate)
{
    Q_D(QFSFileEngine);
    d->fileEntry = QFileSystemEntry(file);
}
 
QFSFileEngine::QFSFileEngine() : QAbstractFileEngine(*new QFSFileEnginePrivate)
{
}
 
QFSFileEngine::QFSFileEngine(QFSFileEnginePrivate &dd)
    : QAbstractFileEngine(dd)
{
}
 
ProcessOpenModeResult processOpenModeFlags(QIODevice::OpenMode openMode)
{
    ProcessOpenModeResult result;
    result.ok = false;
    if ((openMode & QFile::NewOnly) && (openMode & QFile::ExistingOnly)) {
        qWarning("NewOnly and ExistingOnly are mutually exclusive");
        result.error = "NewOnly and ExistingOnly are mutually exclusive"_L1;
        return result;
    }
 
    if ((openMode & QFile::ExistingOnly) && !(openMode & (QFile::ReadOnly | QFile::WriteOnly))) {
        qWarning("ExistingOnly must be specified alongside ReadOnly, WriteOnly, or ReadWrite");
        result.error =
                    "ExistingOnly must be specified alongside ReadOnly, WriteOnly, or ReadWrite"_L1;
        return result;
    }
 
    // Either Append or NewOnly implies WriteOnly
    if (openMode & (QFile::Append | QFile::NewOnly))
        openMode |= QFile::WriteOnly;
 
    // WriteOnly implies Truncate when ReadOnly, Append, and NewOnly are not set.
    if ((openMode & QFile::WriteOnly) && !(openMode & (QFile::ReadOnly | QFile::Append | QFile::NewOnly)))
        openMode |= QFile::Truncate;
 
    result.ok = true;
    result.openMode = openMode;
    return result;
}
 
QFSFileEngine::~QFSFileEngine()
{
    Q_D(QFSFileEngine);
    if (d->closeFileHandle) {
        if (d->fh) {
            fclose(d->fh);
        } else if (d->fd != -1) {
            QT_CLOSE(d->fd);
        }
    }
    d->unmapAll();
}
 
void QFSFileEngine::setFileName(const QString &file)
{
    Q_D(QFSFileEngine);
    d->init();
    d->fileEntry = QFileSystemEntry(file);
}
 
bool QFSFileEngine::open(QIODevice::OpenMode openMode,
                         std::optional<QFile::Permissions> permissions)
{
    Q_ASSERT_X(openMode & QIODevice::Unbuffered, "QFSFileEngine::open",
               "QFSFileEngine no longer supports buffered mode; upper layer must buffer");
 
    Q_D(QFSFileEngine);
    if (d->fileEntry.isEmpty()) {
        qWarning("QFSFileEngine::open: No file name specified");
        setError(QFile::OpenError, "No file name specified"_L1);
        return false;
    }
 
    const ProcessOpenModeResult res = processOpenModeFlags(openMode);
    if (!res.ok) {
        setError(QFileDevice::OpenError, res.error);
        return false;
    }
 
    d->openMode = res.openMode;
    d->lastFlushFailed = false;
    d->tried_stat = 0;
    d->fh = nullptr;
    d->fd = -1;
 
    return d->nativeOpen(d->openMode, permissions);
}
 
bool QFSFileEngine::open(QIODevice::OpenMode openMode, FILE *fh)
{
    return open(openMode, fh, QFile::DontCloseHandle);
}
 
bool QFSFileEngine::open(QIODevice::OpenMode openMode, FILE *fh, QFile::FileHandleFlags handleFlags)
{
    Q_ASSERT_X(openMode & QIODevice::Unbuffered, "QFSFileEngine::open",
               "QFSFileEngine no longer supports buffered mode; upper layer must buffer");
 
    Q_D(QFSFileEngine);
 
    const ProcessOpenModeResult res = processOpenModeFlags(openMode);
    if (!res.ok) {
        setError(QFileDevice::OpenError, res.error);
        return false;
    }
 
    d->openMode = res.openMode;
    d->lastFlushFailed = false;
    d->closeFileHandle = handleFlags.testAnyFlag(QFile::AutoCloseHandle);
    d->fileEntry.clear();
    d->tried_stat = 0;
    d->fd = -1;
 
    return d->openFh(d->openMode, fh);
}
 
bool QFSFileEnginePrivate::openFh(QIODevice::OpenMode openMode, FILE *fh)
{
    Q_ASSERT_X(openMode & QIODevice::Unbuffered, "QFSFileEngine::open",
               "QFSFileEngine no longer supports buffered mode; upper layer must buffer");
 
    Q_Q(QFSFileEngine);
    this->fh = fh;
    fd = -1;
 
    // Seek to the end when in Append mode.
    if (openMode & QIODevice::Append) {
        int ret;
        do {
            ret = QT_FSEEK(fh, 0, SEEK_END);
        } while (ret != 0 && errno == EINTR);
 
        if (ret != 0) {
            q->setError(errno == EMFILE ? QFile::ResourceError : QFile::OpenError,
                        QSystemError::stdString());
 
            this->openMode = QIODevice::NotOpen;
            this->fh = nullptr;
 
            return false;
        }
    }
 
    return true;
}
 
bool QFSFileEngine::open(QIODevice::OpenMode openMode, int fd)
{
    return open(openMode, fd, QFile::DontCloseHandle);
}
 
bool QFSFileEngine::open(QIODevice::OpenMode openMode, int fd, QFile::FileHandleFlags handleFlags)
{
    Q_D(QFSFileEngine);
 
    const ProcessOpenModeResult res = processOpenModeFlags(openMode);
    if (!res.ok) {
        setError(QFileDevice::OpenError, res.error);
        return false;
    }
 
    d->openMode = res.openMode;
    d->lastFlushFailed = false;
    d->closeFileHandle = handleFlags.testAnyFlag(QFile::AutoCloseHandle);
    d->fileEntry.clear();
    d->fh = nullptr;
    d->fd = -1;
    d->tried_stat = 0;
 
    return d->openFd(d->openMode, fd);
}
 
 
bool QFSFileEnginePrivate::openFd(QIODevice::OpenMode openMode, int fd)
{
    Q_Q(QFSFileEngine);
    this->fd = fd;
    fh = nullptr;
 
    // Seek to the end when in Append mode.
    if (openMode & QFile::Append) {
        QT_OFF_T ret;
        do {
            ret = QT_LSEEK(fd, 0, SEEK_END);
        } while (ret == -1 && errno == EINTR);
 
        if (ret == -1) {
            q->setError(errno == EMFILE ? QFile::ResourceError : QFile::OpenError,
                        QSystemError::stdString());
 
            this->openMode = QIODevice::NotOpen;
            this->fd = -1;
 
            return false;
        }
    }
 
    return true;
}
 
bool QFSFileEngine::close()
{
    Q_D(QFSFileEngine);
    d->openMode = QIODevice::NotOpen;
    return d->nativeClose();
}
 
bool QFSFileEnginePrivate::closeFdFh()
{
    Q_Q(QFSFileEngine);
    if (fd == -1 && !fh)
        return false;
 
    // Flush the file if it's buffered, and if the last flush didn't fail.
    bool flushed = !fh || (!lastFlushFailed && q->flush());
    bool closed = true;
    tried_stat = 0;
 
    // Close the file if we created the handle.
    if (closeFileHandle) {
        int ret;
 
        if (fh) {
            // Close buffered file.
            ret = fclose(fh);
        } else {
            // Close unbuffered file.
            ret = QT_CLOSE(fd);
        }
 
        // We must reset these guys regardless; calling close again after a
        // failed close causes crashes on some systems.
        fh = nullptr;
        fd = -1;
        closed = (ret == 0);
    }
 
    // Report errors.
    if (!flushed || !closed) {
        if (flushed) {
            // If not flushed, we want the flush error to fall through.
            q->setError(QFile::UnspecifiedError, QSystemError::stdString());
        }
        return false;
    }
 
    return true;
}
 
bool QFSFileEngine::flush()
{
    Q_D(QFSFileEngine);
    if ((d->openMode & QIODevice::WriteOnly) == 0) {
        // Nothing in the write buffers, so flush succeeds in doing
        // nothing.
        return true;
    }
    return d->nativeFlush();
}
 
bool QFSFileEngine::syncToDisk()
{
    Q_D(QFSFileEngine);
    if ((d->openMode & QIODevice::WriteOnly) == 0)
        return true;
    return d->nativeSyncToDisk();
}
 
bool QFSFileEnginePrivate::flushFh()
{
    Q_Q(QFSFileEngine);
 
    // Never try to flush again if the last flush failed. Otherwise you can
    // get crashes on some systems (AIX).
    if (lastFlushFailed)
        return false;
 
    int ret = fflush(fh);
 
    lastFlushFailed = (ret != 0);
    lastIOCommand = QFSFileEnginePrivate::IOFlushCommand;
 
    if (ret != 0) {
        q->setError(errno == ENOSPC ? QFile::ResourceError : QFile::WriteError,
                    QSystemError::stdString());
        return false;
    }
    return true;
}
 
qint64 QFSFileEngine::size() const
{
    Q_D(const QFSFileEngine);
    return d->nativeSize();
}
 
void QFSFileEnginePrivate::unmapAll()
{
    if (!maps.isEmpty()) {
        const QList<uchar*> keys = maps.keys(); // Make a copy since unmap() modifies the map.
        for (int i = 0; i < keys.size(); ++i)
            unmap(keys.at(i));
    }
}
 
#ifndef Q_OS_WIN
qint64 QFSFileEnginePrivate::sizeFdFh() const
{
    Q_Q(const QFSFileEngine);
    const_cast<QFSFileEngine *>(q)->flush();
 
    tried_stat = 0;
    metaData.clearFlags(QFileSystemMetaData::SizeAttribute);
    if (!doStat(QFileSystemMetaData::SizeAttribute))
        return 0;
    return metaData.size();
}
#endif
 
qint64 QFSFileEngine::pos() const
{
    Q_D(const QFSFileEngine);
    return d->nativePos();
}
 
qint64 QFSFileEnginePrivate::posFdFh() const
{
    if (fh)
        return qint64(QT_FTELL(fh));
    return QT_LSEEK(fd, 0, SEEK_CUR);
}
 
bool QFSFileEngine::seek(qint64 pos)
{
    Q_D(QFSFileEngine);
    return d->nativeSeek(pos);
}
 
QDateTime QFSFileEngine::fileTime(FileTime time) const
{
    Q_D(const QFSFileEngine);
 
    if (time == AccessTime) {
        // always refresh for the access time
        d->metaData.clearFlags(QFileSystemMetaData::AccessTime);
    }
 
    if (d->doStat(QFileSystemMetaData::Times))
        return d->metaData.fileTime(time);
 
    return QDateTime();
}
 
 
bool QFSFileEnginePrivate::seekFdFh(qint64 pos)
{
    Q_Q(QFSFileEngine);
 
    // On Windows' stdlib implementation, the results of calling fread and
    // fwrite are undefined if not called either in sequence, or if preceded
    // with a call to fflush().
    if (lastIOCommand != QFSFileEnginePrivate::IOFlushCommand && !q->flush())
        return false;
 
    if (pos < 0 || pos != qint64(QT_OFF_T(pos)))
        return false;
 
    if (fh) {
        // Buffered stdlib mode.
        int ret;
        do {
            ret = QT_FSEEK(fh, QT_OFF_T(pos), SEEK_SET);
        } while (ret != 0 && errno == EINTR);
 
        if (ret != 0) {
            q->setError(QFile::ReadError, QSystemError::stdString());
            return false;
        }
    } else {
        // Unbuffered stdio mode.
        if (QT_LSEEK(fd, QT_OFF_T(pos), SEEK_SET) == -1) {
            qWarning("QFile::at: Cannot set file position %lld", pos);
            q->setError(QFile::PositionError, QSystemError::stdString());
            return false;
        }
    }
    return true;
}
 
int QFSFileEngine::handle() const
{
    Q_D(const QFSFileEngine);
    return d->nativeHandle();
}
 
qint64 QFSFileEngine::read(char *data, qint64 maxlen)
{
    Q_D(QFSFileEngine);
 
    // On Windows' stdlib implementation, the results of calling fread and
    // fwrite are undefined if not called either in sequence, or if preceded
    // with a call to fflush().
    if (d->lastIOCommand != QFSFileEnginePrivate::IOReadCommand) {
        flush();
        d->lastIOCommand = QFSFileEnginePrivate::IOReadCommand;
    }
 
    return d->nativeRead(data, maxlen);
}
 
qint64 QFSFileEnginePrivate::readFdFh(char *data, qint64 len)
{
    Q_Q(QFSFileEngine);
 
    if (len < 0 || len != qint64(size_t(len))) {
        q->setError(QFile::ReadError, QSystemError::stdString(EINVAL));
        return -1;
    }
 
    qint64 readBytes = 0;
    bool eof = false;
 
    if (fh) {
        // Buffered stdlib mode.
 
        size_t result;
        bool retry = true;
        do {
            result = fread(data + readBytes, 1, size_t(len - readBytes), fh);
            eof = feof(fh);
            if (retry && eof && result == 0) {
                // On OS X, this is needed, e.g., if a file was written to
                // through another stream since our last read. See test
                // tst_QFile::appendAndRead
                QT_FSEEK(fh, QT_FTELL(fh), SEEK_SET); // re-sync stream.
                retry = false;
                continue;
            }
            readBytes += result;
        } while (!eof && (result == 0 ? errno == EINTR : readBytes < len));
 
    } else if (fd != -1) {
        // Unbuffered stdio mode.
 
        SignedIOType result;
        do {
            // calculate the chunk size
            // on Windows or 32-bit no-largefile Unix, we'll need to read in chunks
            // we limit to the size of the signed type, otherwise we could get a negative number as a result
            quint64 wantedBytes = quint64(len) - quint64(readBytes);
            UnsignedIOType chunkSize = std::numeric_limits<SignedIOType>::max();
            if (chunkSize > wantedBytes)
                chunkSize = wantedBytes;
            result = QT_READ(fd, data + readBytes, chunkSize);
        } while (result > 0 && (readBytes += result) < len);
 
        eof = !(result == -1);
    }
 
    if (!eof && readBytes == 0) {
        readBytes = -1;
        q->setError(QFile::ReadError, QSystemError::stdString());
    }
 
    return readBytes;
}
 
qint64 QFSFileEngine::readLine(char *data, qint64 maxlen)
{
    Q_D(QFSFileEngine);
 
    // On Windows' stdlib implementation, the results of calling fread and
    // fwrite are undefined if not called either in sequence, or if preceded
    // with a call to fflush().
    if (d->lastIOCommand != QFSFileEnginePrivate::IOReadCommand) {
        flush();
        d->lastIOCommand = QFSFileEnginePrivate::IOReadCommand;
    }
 
    return d->nativeReadLine(data, maxlen);
}
 
qint64 QFSFileEnginePrivate::readLineFdFh(char *data, qint64 maxlen)
{
    Q_Q(QFSFileEngine);
    if (!fh)
        return q->QAbstractFileEngine::readLine(data, maxlen);
 
    QT_OFF_T oldPos = 0;
#ifdef Q_OS_WIN
    bool seq = q->isSequential();
    if (!seq)
#endif
        oldPos = QT_FTELL(fh);
 
    // QIODevice::readLine() passes maxlen - 1 to QFile::readLineData()
    // because it has made space for the '\0' at the end of data.  But fgets
    // does the same, so we'd get two '\0' at the end - passing maxlen + 1
    // solves this.
    if (!fgets(data, int(maxlen + 1), fh)) {
        if (!feof(fh))
            q->setError(QFile::ReadError, QSystemError::stdString());
        return -1;              // error
    }
 
#ifdef Q_OS_WIN
    if (seq)
        return qstrlen(data);
#endif
 
    qint64 lineLength = QT_FTELL(fh) - oldPos;
    return lineLength > 0 ? lineLength : qstrlen(data);
}
 
qint64 QFSFileEngine::write(const char *data, qint64 len)
{
    Q_D(QFSFileEngine);
    d->metaData.clearFlags(QFileSystemMetaData::Times);
 
    // On Windows' stdlib implementation, the results of calling fread and
    // fwrite are undefined if not called either in sequence, or if preceded
    // with a call to fflush().
    if (d->lastIOCommand != QFSFileEnginePrivate::IOWriteCommand) {
        flush();
        d->lastIOCommand = QFSFileEnginePrivate::IOWriteCommand;
    }
 
    return d->nativeWrite(data, len);
}
 
qint64 QFSFileEnginePrivate::writeFdFh(const char *data, qint64 len)
{
    Q_Q(QFSFileEngine);
 
    if (len < 0 || len != qint64(size_t(len))) {
        q->setError(QFile::WriteError, QSystemError::stdString(EINVAL));
        return -1;
    }
 
    qint64 writtenBytes = 0;
 
    if (len) { // avoid passing nullptr to fwrite() or QT_WRITE() (UB)
 
        if (fh) {
            // Buffered stdlib mode.
 
            size_t result;
            do {
                result = fwrite(data + writtenBytes, 1, size_t(len - writtenBytes), fh);
                writtenBytes += result;
            } while (result == 0 ? errno == EINTR : writtenBytes < len);
 
        } else if (fd != -1) {
            // Unbuffered stdio mode.
 
            SignedIOType result;
            do {
                // calculate the chunk size
                // on Windows or 32-bit no-largefile Unix, we'll need to read in chunks
                // we limit to the size of the signed type, otherwise we could get a negative number as a result
                quint64 wantedBytes = quint64(len) - quint64(writtenBytes);
                UnsignedIOType chunkSize = std::numeric_limits<SignedIOType>::max();
                if (chunkSize > wantedBytes)
                    chunkSize = wantedBytes;
                result = QT_WRITE(fd, data + writtenBytes, chunkSize);
            } while (result > 0 && (writtenBytes += result) < len);
        }
 
    }
 
    if (len &&  writtenBytes == 0) {
        writtenBytes = -1;
        q->setError(errno == ENOSPC ? QFile::ResourceError : QFile::WriteError, QSystemError::stdString());
    } else {
        // reset the cached size, if any
        metaData.clearFlags(QFileSystemMetaData::SizeAttribute);
    }
 
    return writtenBytes;
}
 
#ifndef QT_NO_FILESYSTEMITERATOR
QAbstractFileEngine::Iterator *QFSFileEngine::beginEntryList(QDir::Filters filters, const QStringList &filterNames)
{
    return new QFSFileEngineIterator(filters, filterNames);
}
 
QAbstractFileEngine::Iterator *QFSFileEngine::endEntryList()
{
    return nullptr;
}
#endif // QT_NO_FILESYSTEMITERATOR
 
QStringList QFSFileEngine::entryList(QDir::Filters filters, const QStringList &filterNames) const
{
    return QAbstractFileEngine::entryList(filters, filterNames);
}
 
bool QFSFileEngine::isSequential() const
{
    Q_D(const QFSFileEngine);
    if (d->is_sequential == 0)
        d->is_sequential = d->nativeIsSequential() ? 1 : 2;
    return d->is_sequential == 1;
}
 
#ifdef Q_OS_UNIX
bool QFSFileEnginePrivate::isSequentialFdFh() const
{
    if (doStat(QFileSystemMetaData::SequentialType))
        return metaData.isSequential();
    return true;
}
#endif
 
bool QFSFileEngine::extension(Extension extension, const ExtensionOption *option, ExtensionReturn *output)
{
    Q_D(QFSFileEngine);
    if (extension == AtEndExtension && d->fh && isSequential())
        return feof(d->fh);
 
    if (extension == MapExtension) {
        const MapExtensionOption *options = (const MapExtensionOption*)(option);
        MapExtensionReturn *returnValue = static_cast<MapExtensionReturn*>(output);
        returnValue->address = d->map(options->offset, options->size, options->flags);
        return (returnValue->address != nullptr);
    }
    if (extension == UnMapExtension) {
        const UnMapExtensionOption *options = (const UnMapExtensionOption*)option;
        return d->unmap(options->address);
    }
 
    return false;
}
 
bool QFSFileEngine::supportsExtension(Extension extension) const
{
    Q_D(const QFSFileEngine);
    if (extension == AtEndExtension && d->fh && isSequential())
        return true;
    if (extension == FastReadLineExtension && d->fh)
        return true;
    if (extension == FastReadLineExtension && d->fd != -1 && isSequential())
        return true;
    if (extension == UnMapExtension || extension == MapExtension)
        return true;
    return false;
}
 
QString QFSFileEngine::homePath()
{
    return QFileSystemEngine::homePath();
}
 
QString QFSFileEngine::rootPath()
{
    return QFileSystemEngine::rootPath();
}
 
QString QFSFileEngine::tempPath()
{
    return QFileSystemEngine::tempPath();
}
 
bool QFSFileEngine::copy(const QString &copyName)
{
    Q_D(QFSFileEngine);
    QSystemError error;
    bool ret = QFileSystemEngine::copyFile(d->fileEntry, QFileSystemEntry(copyName), error);
    if (!ret)
        setError(QFile::CopyError, error.toString());
    return ret;
}
 
bool QFSFileEngine::remove()
{
    Q_D(QFSFileEngine);
    QSystemError error;
    bool ret = QFileSystemEngine::removeFile(d->fileEntry, error);
    d->metaData.clear();
    if (!ret)
        setError(QFile::RemoveError, error.toString());
    return ret;
}
 
bool QFSFileEngine::rename(const QString &newName)
{
    Q_D(QFSFileEngine);
    QSystemError error;
    bool ret = QFileSystemEngine::renameFile(d->fileEntry, QFileSystemEntry(newName), error);
    if (!ret)
        setError(QFile::RenameError, error.toString());
    return ret;
}
bool QFSFileEngine::renameOverwrite(const QString &newName)
{
    Q_D(QFSFileEngine);
    QSystemError error;
    bool ret = QFileSystemEngine::renameOverwriteFile(d->fileEntry, QFileSystemEntry(newName), error);
    if (!ret)
        setError(QFile::RenameError, error.toString());
    return ret;
}
 
bool QFSFileEngine::mkdir(const QString &name, bool createParentDirectories,
                          std::optional<QFile::Permissions> permissions) const
{
    return QFileSystemEngine::createDirectory(QFileSystemEntry(name), createParentDirectories,
                                              permissions);
}
 
bool QFSFileEngine::rmdir(const QString &name, bool recurseParentDirectories) const
{
    return QFileSystemEngine::removeDirectory(QFileSystemEntry(name), recurseParentDirectories);
}
 
 
bool QFSFileEngine::setCurrentPath(const QString &path)
{
    return QFileSystemEngine::setCurrentPath(QFileSystemEntry(path));
}
 
QT_END_NAMESPACE
 
#endif // QT_NO_FSFILEENGINE