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|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qplatformdefs.h"
#include "qabstractfileengine.h"
#include "private/qfsfileengine_p.h"
#include "private/qcore_unix_p.h"
#include "qfilesystementry_p.h"
#include "qfilesystemengine_p.h"
#ifndef QT_NO_FSFILEENGINE
#include "qfile.h"
#include "qdir.h"
#include "qdatetime.h"
#include "qvarlengtharray.h"
#include <sys/mman.h>
#include <stdlib.h>
#include <limits.h>
#if defined(Q_OS_SYMBIAN)
# include <sys/syslimits.h>
# include <f32file.h>
# include <pathinfo.h>
# include "private/qcore_symbian_p.h"
#endif
#include <errno.h>
#if !defined(QWS) && defined(Q_OS_MAC)
# include <private/qcore_mac_p.h>
#endif
QT_BEGIN_NAMESPACE
#if defined(Q_OS_SYMBIAN)
/*!
\internal
Returns true if supplied path is a relative path
*/
static bool isRelativePathSymbian(const QString& fileName)
{
return !(fileName.startsWith(QLatin1Char('/'))
|| (fileName.length() >= 2
&& ((fileName.at(0).isLetter() && fileName.at(1) == QLatin1Char(':'))
|| (fileName.at(0) == QLatin1Char('/') && fileName.at(1) == QLatin1Char('/')))));
}
#endif
#ifndef Q_OS_SYMBIAN
/*!
\internal
Returns the stdlib open string corresponding to a QIODevice::OpenMode.
*/
static inline QByteArray openModeToFopenMode(QIODevice::OpenMode flags, const QFileSystemEntry &fileEntry,
QFileSystemMetaData &metaData)
{
QByteArray mode;
if ((flags & QIODevice::ReadOnly) && !(flags & QIODevice::Truncate)) {
mode = "rb";
if (flags & QIODevice::WriteOnly) {
metaData.clearFlags(QFileSystemMetaData::FileType);
if (!fileEntry.isEmpty()
&& QFileSystemEngine::fillMetaData(fileEntry, metaData, QFileSystemMetaData::FileType)
&& metaData.isFile()) {
mode += '+';
} else {
mode = "wb+";
}
}
} else if (flags & QIODevice::WriteOnly) {
mode = "wb";
if (flags & QIODevice::ReadOnly)
mode += '+';
}
if (flags & QIODevice::Append) {
mode = "ab";
if (flags & QIODevice::ReadOnly)
mode += '+';
}
#if defined(__GLIBC__) && (__GLIBC__ * 0x100 + __GLIBC_MINOR__) >= 0x0207
// must be glibc >= 2.7
mode += 'e';
#endif
return mode;
}
#endif
/*!
\internal
Returns the stdio open flags corresponding to a QIODevice::OpenMode.
*/
static inline int openModeToOpenFlags(QIODevice::OpenMode mode)
{
int oflags = QT_OPEN_RDONLY;
#ifdef QT_LARGEFILE_SUPPORT
oflags |= QT_OPEN_LARGEFILE;
#endif
if ((mode & QFile::ReadWrite) == QFile::ReadWrite) {
oflags = QT_OPEN_RDWR | QT_OPEN_CREAT;
} else if (mode & QFile::WriteOnly) {
oflags = QT_OPEN_WRONLY | QT_OPEN_CREAT;
}
if (mode & QFile::Append) {
oflags |= QT_OPEN_APPEND;
} else if (mode & QFile::WriteOnly) {
if ((mode & QFile::Truncate) || !(mode & QFile::ReadOnly))
oflags |= QT_OPEN_TRUNC;
}
return oflags;
}
#ifndef Q_OS_SYMBIAN
/*!
\internal
Sets the file descriptor to close on exec. That is, the file
descriptor is not inherited by child processes.
*/
static inline bool setCloseOnExec(int fd)
{
return fd != -1 && fcntl(fd, F_SETFD, FD_CLOEXEC) != -1;
}
#endif
#ifdef Q_OS_SYMBIAN
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeOpen(QIODevice::OpenMode openMode)
{
Q_Q(QFSFileEngine);
fh = 0;
fd = -1;
QString fn(QFileSystemEngine::absoluteName(fileEntry).nativeFilePath());
RFs& fs = qt_s60GetRFs();
TUint symbianMode = 0;
if(openMode & QIODevice::ReadOnly)
symbianMode |= EFileRead;
if(openMode & QIODevice::WriteOnly)
symbianMode |= EFileWrite;
if(openMode & QIODevice::Text)
symbianMode |= EFileStreamText;
if (openMode & QFile::Unbuffered) {
if (openMode & QIODevice::WriteOnly)
symbianMode |= 0x00001000; //EFileWriteDirectIO;
// ### Unbuffered read is not used, because it prevents file open in /resource
// ### and has no obvious benefits
} else {
if (openMode & QIODevice::WriteOnly)
symbianMode |= 0x00000800; //EFileWriteBuffered;
// use implementation defaults for read buffering
}
// Until Qt supports file sharing, we can't support EFileShareReadersOrWriters safely,
// but Qt does this on other platforms and autotests rely on it.
// The reason is that Unix locks are only advisory - the application needs to test the
// lock after opening the file. Symbian and Windows locks are mandatory - opening a
// locked file will fail.
symbianMode |= EFileShareReadersOrWriters;
TInt r;
//note QIODevice::Truncate only has meaning for read/write access
//write-only files are always truncated unless append is specified
//reference openModeToOpenFlags in qfsfileengine_unix.cpp
if ((openMode & QIODevice::Truncate) || (!(openMode & QIODevice::ReadOnly) && !(openMode & QIODevice::Append))) {
r = symbianFile.Replace(fs, qt_QString2TPtrC(fn), symbianMode);
} else {
r = symbianFile.Open(fs, qt_QString2TPtrC(fn), symbianMode);
if (r == KErrNotFound && (openMode & QIODevice::WriteOnly)) {
r = symbianFile.Create(fs, qt_QString2TPtrC(fn), symbianMode);
}
}
if (r == KErrNone) {
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
TInt64 size;
#else
TInt size;
#endif
r = symbianFile.Size(size);
if (r==KErrNone) {
if (openMode & QIODevice::Append)
symbianFilePos = size;
else
symbianFilePos = 0;
//TODO: port this (QFileSystemMetaData in open?)
//cachedSize = size;
}
}
if (r != KErrNone) {
q->setError(QFile::OpenError, QSystemError(r, QSystemError::NativeError).toString());
symbianFile.Close();
return false;
}
closeFileHandle = true;
return true;
}
/*!
Opens the file descriptor specified by \a file in the mode given by
\a openMode. Returns true on success; otherwise returns false.
The \a handleFlags argument specifies whether the file handle will be
closed by Qt. See the QFile::FileHandleFlags documentation for more
information.
*/
bool QFSFileEngine::open(QIODevice::OpenMode openMode, const RFile &file, QFile::FileHandleFlags handleFlags)
{
Q_D(QFSFileEngine);
// Append implies WriteOnly.
if (openMode & QFile::Append)
openMode |= QFile::WriteOnly;
// WriteOnly implies Truncate if neither ReadOnly nor Append are sent.
if ((openMode & QFile::WriteOnly) && !(openMode & (QFile::ReadOnly | QFile::Append)))
openMode |= QFile::Truncate;
d->openMode = openMode;
d->lastFlushFailed = false;
d->closeFileHandle = (handleFlags & QFile::AutoCloseHandle);
d->fileEntry.clear();
d->fh = 0;
d->fd = -1;
d->tried_stat = 0;
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
//RFile64 adds only functions to RFile, no data members
d->symbianFile = static_cast<const RFile64&>(file);
#else
d->symbianFile = file;
#endif
TInt ret;
d->symbianFilePos = 0;
if (openMode & QFile::Append) {
// Seek to the end when in Append mode.
ret = d->symbianFile.Size(d->symbianFilePos);
} else {
// Seek to current otherwise
ret = d->symbianFile.Seek(ESeekCurrent, d->symbianFilePos);
}
if (ret != KErrNone) {
setError(QFile::OpenError, QSystemError(ret, QSystemError::NativeError).toString());
d->openMode = QIODevice::NotOpen;
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
d->symbianFile = RFile64();
#else
d->symbianFile = RFile();
#endif
return false;
}
// Extract filename (best effort)
TFileName fn;
TInt err = d->symbianFile.FullName(fn);
if (err == KErrNone)
d->fileEntry = QFileSystemEntry(qt_TDesC2QString(fn), QFileSystemEntry::FromNativePath());
else
d->fileEntry.clear();
return true;
}
#else
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeOpen(QIODevice::OpenMode openMode)
{
Q_Q(QFSFileEngine);
if (openMode & QIODevice::Unbuffered) {
int flags = openModeToOpenFlags(openMode);
// Try to open the file in unbuffered mode.
do {
fd = QT_OPEN(fileEntry.nativeFilePath().constData(), flags, 0666);
} while (fd == -1 && errno == EINTR);
// On failure, return and report the error.
if (fd == -1) {
q->setError(errno == EMFILE ? QFile::ResourceError : QFile::OpenError,
qt_error_string(errno));
return false;
}
if (!(openMode & QIODevice::WriteOnly)) {
// we don't need this check if we tried to open for writing because then
// we had received EISDIR anyway.
if (QFileSystemEngine::fillMetaData(fd, metaData)
&& metaData.isDirectory()) {
q->setError(QFile::OpenError, QLatin1String("file to open is a directory"));
QT_CLOSE(fd);
return false;
}
}
// Seek to the end when in Append mode.
if (flags & QFile::Append) {
int 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,
qt_error_string(int(errno)));
return false;
}
}
fh = 0;
} else {
QByteArray fopenMode = openModeToFopenMode(openMode, fileEntry, metaData);
// Try to open the file in buffered mode.
do {
fh = QT_FOPEN(fileEntry.nativeFilePath().constData(), fopenMode.constData());
} while (!fh && errno == EINTR);
// On failure, return and report the error.
if (!fh) {
q->setError(errno == EMFILE ? QFile::ResourceError : QFile::OpenError,
qt_error_string(int(errno)));
return false;
}
if (!(openMode & QIODevice::WriteOnly)) {
// we don't need this check if we tried to open for writing because then
// we had received EISDIR anyway.
if (QFileSystemEngine::fillMetaData(QT_FILENO(fh), metaData)
&& metaData.isDirectory()) {
q->setError(QFile::OpenError, QLatin1String("file to open is a directory"));
fclose(fh);
return false;
}
}
setCloseOnExec(fileno(fh)); // ignore failure
// Seek to the end when in Append mode.
if (openMode & QIODevice::Append) {
int ret;
do {
ret = QT_FSEEK(fh, 0, SEEK_END);
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
q->setError(errno == EMFILE ? QFile::ResourceError : QFile::OpenError,
qt_error_string(int(errno)));
return false;
}
}
fd = -1;
}
closeFileHandle = true;
return true;
}
#endif
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeClose()
{
return closeFdFh();
}
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeFlush()
{
#ifdef Q_OS_SYMBIAN
if (symbianFile.SubSessionHandle())
return (KErrNone == symbianFile.Flush());
#endif
return fh ? flushFh() : fd != -1;
}
/*!
\internal
*/
qint64 QFSFileEnginePrivate::nativeRead(char *data, qint64 len)
{
Q_Q(QFSFileEngine);
#ifdef Q_OS_SYMBIAN
if (symbianFile.SubSessionHandle()) {
if(len > KMaxTInt) {
//this check is more likely to catch a corrupt length, since it isn't possible to allocate 2GB buffers (yet..)
q->setError(QFile::ReadError, QLatin1String("Maximum 2GB in single read on this platform"));
return -1;
}
TPtr8 ptr(reinterpret_cast<TUint8*>(data), static_cast<TInt>(len));
TInt r = symbianFile.Read(symbianFilePos, ptr);
if (r != KErrNone)
{
q->setError(QFile::ReadError, QSystemError(r, QSystemError::NativeError).toString());
return -1;
}
symbianFilePos += ptr.Length();
return qint64(ptr.Length());
}
#endif
if (fh && nativeIsSequential()) {
size_t readBytes = 0;
int oldFlags = fcntl(QT_FILENO(fh), F_GETFL);
for (int i = 0; i < 2; ++i) {
// Unix: Make the underlying file descriptor non-blocking
if ((oldFlags & O_NONBLOCK) == 0)
fcntl(QT_FILENO(fh), F_SETFL, oldFlags | O_NONBLOCK);
// Cross platform stdlib read
size_t read = 0;
do {
read = fread(data + readBytes, 1, size_t(len - readBytes), fh);
} while (read == 0 && !feof(fh) && errno == EINTR);
if (read > 0) {
readBytes += read;
break;
} else {
if (readBytes)
break;
readBytes = read;
}
// Unix: Restore the blocking state of the underlying socket
if ((oldFlags & O_NONBLOCK) == 0) {
fcntl(QT_FILENO(fh), F_SETFL, oldFlags);
if (readBytes == 0) {
int readByte = 0;
do {
readByte = fgetc(fh);
} while (readByte == -1 && errno == EINTR);
if (readByte != -1) {
*data = uchar(readByte);
readBytes += 1;
} else {
break;
}
}
}
}
// Unix: Restore the blocking state of the underlying socket
if ((oldFlags & O_NONBLOCK) == 0) {
fcntl(QT_FILENO(fh), F_SETFL, oldFlags);
}
if (readBytes == 0 && !feof(fh)) {
// if we didn't read anything and we're not at EOF, it must be an error
q->setError(QFile::ReadError, qt_error_string(int(errno)));
return -1;
}
return readBytes;
}
return readFdFh(data, len);
}
/*!
\internal
*/
qint64 QFSFileEnginePrivate::nativeReadLine(char *data, qint64 maxlen)
{
return readLineFdFh(data, maxlen);
}
/*!
\internal
*/
qint64 QFSFileEnginePrivate::nativeWrite(const char *data, qint64 len)
{
#ifdef Q_OS_SYMBIAN
Q_Q(QFSFileEngine);
if (symbianFile.SubSessionHandle()) {
if(len > KMaxTInt) {
//this check is more likely to catch a corrupt length, since it isn't possible to allocate 2GB buffers (yet..)
q->setError(QFile::WriteError, QLatin1String("Maximum 2GB in single write on this platform"));
return -1;
}
const TPtrC8 ptr(reinterpret_cast<const TUint8*>(data), static_cast<TInt>(len));
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
TInt64 eofpos = 0;
#else
TInt eofpos = 0;
#endif
//The end of file position is not cached because QFile is read/write sharable, therefore another
//process may have altered the file size.
TInt r = symbianFile.Seek(ESeekEnd, eofpos);
if (r == KErrNone && symbianFilePos > eofpos) {
//seek position is beyond end of file so file needs to be extended before write.
//note that SetSize does not zero-initialise (c.f. posix lseek)
r = symbianFile.SetSize(symbianFilePos);
}
if (r == KErrNone) {
//write to specific position in the file (i.e. use our own cursor rather than calling seek)
r = symbianFile.Write(symbianFilePos, ptr);
}
if (r != KErrNone) {
q->setError(QFile::WriteError, QSystemError(r, QSystemError::NativeError).toString());
return -1;
}
symbianFilePos += len;
return len;
}
#endif
return writeFdFh(data, len);
}
/*!
\internal
*/
qint64 QFSFileEnginePrivate::nativePos() const
{
#ifdef Q_OS_SYMBIAN
const Q_Q(QFSFileEngine);
if (symbianFile.SubSessionHandle()) {
return symbianFilePos;
}
#endif
return posFdFh();
}
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeSeek(qint64 pos)
{
#ifdef Q_OS_SYMBIAN
Q_Q(QFSFileEngine);
if (symbianFile.SubSessionHandle()) {
#ifndef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
if(pos > KMaxTInt) {
q->setError(QFile::PositionError, QLatin1String("Maximum 2GB file position on this platform"));
return false;
}
#endif
symbianFilePos = pos;
return true;
}
#endif
return seekFdFh(pos);
}
/*!
\internal
*/
int QFSFileEnginePrivate::nativeHandle() const
{
return fh ? fileno(fh) : fd;
}
#if defined(Q_OS_SYMBIAN) && !defined(QT_SYMBIAN_USE_NATIVE_FILEMAP)
int QFSFileEnginePrivate::getMapHandle()
{
if (symbianFile.SubSessionHandle()) {
// Symbian file handle can't be used for open C mmap() so open the file with open C as well.
if (fileHandleForMaps < 0) {
int flags = openModeToOpenFlags(openMode);
flags &= ~(O_CREAT | O_TRUNC);
fileHandleForMaps = ::wopen((wchar_t*)(fileEntry.nativeFilePath().utf16()), flags, 0666);
}
return fileHandleForMaps;
}
return nativeHandle();
}
#endif
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeIsSequential() const
{
#ifdef Q_OS_SYMBIAN
if (symbianFile.SubSessionHandle())
return false;
#endif
return isSequentialFdFh();
}
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::copy(const QString &newName)
{
Q_D(QFSFileEngine);
QSystemError error;
bool ret = QFileSystemEngine::copyFile(d->fileEntry, QFileSystemEntry(newName), error);
if (!ret) {
setError(QFile::CopyError, 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::link(const QString &newName)
{
Q_D(QFSFileEngine);
QSystemError error;
bool ret = QFileSystemEngine::createLink(d->fileEntry, QFileSystemEntry(newName), error);
if (!ret) {
setError(QFile::RenameError, error.toString());
}
return ret;
}
qint64 QFSFileEnginePrivate::nativeSize() const
{
#ifdef Q_OS_SYMBIAN
const Q_Q(QFSFileEngine);
if (symbianFile.SubSessionHandle()) {
#ifdef SYMBIAN_ENABLE_64_BIT_FILE_SERVER_API
qint64 size;
#else
TInt size;
#endif
TInt err = symbianFile.Size(size);
if(err != KErrNone) {
const_cast<QFSFileEngine*>(q)->setError(QFile::PositionError, QSystemError(err, QSystemError::NativeError).toString());
return 0;
}
return size;
}
#endif
return sizeFdFh();
}
bool QFSFileEngine::mkdir(const QString &name, bool createParentDirectories) const
{
return QFileSystemEngine::createDirectory(QFileSystemEntry(name), createParentDirectories);
}
bool QFSFileEngine::rmdir(const QString &name, bool recurseParentDirectories) const
{
return QFileSystemEngine::removeDirectory(QFileSystemEntry(name), recurseParentDirectories);
}
bool QFSFileEngine::caseSensitive() const
{
#if defined(Q_OS_SYMBIAN)
return false;
#else
return true;
#endif
}
bool QFSFileEngine::setCurrentPath(const QString &path)
{
return QFileSystemEngine::setCurrentPath(QFileSystemEntry(path));
}
QString QFSFileEngine::currentPath(const QString &)
{
return QFileSystemEngine::currentPath().filePath();
}
QString QFSFileEngine::homePath()
{
return QFileSystemEngine::homePath();
}
QString QFSFileEngine::rootPath()
{
return QFileSystemEngine::rootPath();
}
QString QFSFileEngine::tempPath()
{
return QFileSystemEngine::tempPath();
}
QFileInfoList QFSFileEngine::drives()
{
QFileInfoList ret;
#if defined(Q_OS_SYMBIAN)
TDriveList driveList;
RFs rfs = qt_s60GetRFs();
TInt err = rfs.DriveList(driveList);
if (err == KErrNone) {
char driveName[] = "A:/";
for (char i = 0; i < KMaxDrives; i++) {
if (driveList[i]) {
driveName[0] = 'A' + i;
ret.append(QFileInfo(QLatin1String(driveName)));
}
}
} else {
qWarning("QFSFileEngine::drives: Getting drives failed");
}
#else
ret.append(QFileInfo(rootPath()));
#endif
return ret;
}
bool QFSFileEnginePrivate::doStat(QFileSystemMetaData::MetaDataFlags flags) const
{
if (!tried_stat || !metaData.hasFlags(flags)) {
tried_stat = 1;
int localFd = fd;
if (fh && fileEntry.isEmpty())
localFd = QT_FILENO(fh);
if (localFd != -1)
QFileSystemEngine::fillMetaData(localFd, metaData);
if (metaData.missingFlags(flags) && !fileEntry.isEmpty())
QFileSystemEngine::fillMetaData(fileEntry, metaData, metaData.missingFlags(flags));
}
return metaData.exists();
}
bool QFSFileEnginePrivate::isSymlink() const
{
if (!metaData.hasFlags(QFileSystemMetaData::LinkType))
QFileSystemEngine::fillMetaData(fileEntry, metaData, QFileSystemMetaData::LinkType);
return metaData.isLink();
}
/*!
\reimp
*/
QAbstractFileEngine::FileFlags QFSFileEngine::fileFlags(FileFlags type) const
{
Q_D(const QFSFileEngine);
if (type & Refresh)
d->metaData.clear();
QAbstractFileEngine::FileFlags ret = 0;
if (type & FlagsMask)
ret |= LocalDiskFlag;
bool exists;
{
QFileSystemMetaData::MetaDataFlags queryFlags = 0;
queryFlags |= QFileSystemMetaData::MetaDataFlags(uint(type))
& QFileSystemMetaData::Permissions;
if (type & TypesMask)
queryFlags |= QFileSystemMetaData::AliasType
| QFileSystemMetaData::LinkType
| QFileSystemMetaData::FileType
| QFileSystemMetaData::DirectoryType
| QFileSystemMetaData::BundleType;
if (type & FlagsMask)
queryFlags |= QFileSystemMetaData::HiddenAttribute
| QFileSystemMetaData::ExistsAttribute;
queryFlags |= QFileSystemMetaData::LinkType;
exists = d->doStat(queryFlags);
}
if (!exists && !d->metaData.isLink())
return ret;
if (exists && (type & PermsMask))
ret |= FileFlags(uint(d->metaData.permissions()));
if (type & TypesMask) {
if (d->metaData.isAlias()) {
ret |= LinkType;
} else {
if ((type & LinkType) && d->metaData.isLink())
ret |= LinkType;
if (exists) {
if (d->metaData.isFile()) {
ret |= FileType;
} else if (d->metaData.isDirectory()) {
ret |= DirectoryType;
if ((type & BundleType) && d->metaData.isBundle())
ret |= BundleType;
}
}
}
}
if (type & FlagsMask) {
if (exists)
ret |= ExistsFlag;
if (d->fileEntry.isRoot())
ret |= RootFlag;
else if (d->metaData.isHidden())
ret |= HiddenFlag;
}
return ret;
}
QString QFSFileEngine::fileName(FileName file) const
{
Q_D(const QFSFileEngine);
if (file == BundleName) {
return QFileSystemEngine::bundleName(d->fileEntry);
} else if (file == BaseName) {
return d->fileEntry.fileName();
} else if (file == PathName) {
return d->fileEntry.path();
} else if (file == AbsoluteName || file == AbsolutePathName) {
QFileSystemEntry entry(QFileSystemEngine::absoluteName(d->fileEntry));
if (file == AbsolutePathName) {
return entry.path();
}
return entry.filePath();
} else if (file == CanonicalName || file == CanonicalPathName) {
QFileSystemEntry entry(QFileSystemEngine::canonicalName(d->fileEntry, d->metaData));
if (file == CanonicalPathName)
return entry.path();
return entry.filePath();
} else if (file == LinkName) {
if (d->isSymlink()) {
QFileSystemEntry entry = QFileSystemEngine::getLinkTarget(d->fileEntry, d->metaData);
return entry.filePath();
}
return QString();
}
return d->fileEntry.filePath();
}
bool QFSFileEngine::isRelativePath() const
{
Q_D(const QFSFileEngine);
#if defined(Q_OS_SYMBIAN)
return isRelativePathSymbian(d->fileEntry.filePath());
#else
return d->fileEntry.filePath().length() ? d->fileEntry.filePath()[0] != QLatin1Char('/') : true;
#endif
}
uint QFSFileEngine::ownerId(FileOwner own) const
{
Q_D(const QFSFileEngine);
static const uint nobodyID = (uint) -2;
if (d->doStat(QFileSystemMetaData::OwnerIds))
return d->metaData.ownerId(own);
return nobodyID;
}
QString QFSFileEngine::owner(FileOwner own) const
{
#ifndef Q_OS_SYMBIAN
if (own == OwnerUser)
return QFileSystemEngine::resolveUserName(ownerId(own));
return QFileSystemEngine::resolveGroupName(ownerId(own));
#else
Q_UNUSED(own)
return QString();
#endif
}
bool QFSFileEngine::setPermissions(uint perms)
{
Q_D(QFSFileEngine);
QSystemError error;
if (!QFileSystemEngine::setPermissions(d->fileEntry, QFile::Permissions(perms), error, 0)) {
setError(QFile::PermissionsError, error.toString());
return false;
}
return true;
}
#ifdef Q_OS_SYMBIAN
bool QFSFileEngine::setSize(qint64 size)
{
Q_D(QFSFileEngine);
bool ret = false;
TInt err = KErrNone;
if (d->symbianFile.SubSessionHandle()) {
TInt err = d->symbianFile.SetSize(size);
ret = (err == KErrNone);
if (ret && d->symbianFilePos > size)
d->symbianFilePos = size;
}
else if (d->fd != -1)
ret = QT_FTRUNCATE(d->fd, size) == 0;
else if (d->fh)
ret = QT_FTRUNCATE(QT_FILENO(d->fh), size) == 0;
else {
RFile tmp;
QString symbianFilename(d->fileEntry.nativeFilePath());
err = tmp.Open(qt_s60GetRFs(), qt_QString2TPtrC(symbianFilename), EFileWrite);
if (err == KErrNone)
{
err = tmp.SetSize(size);
tmp.Close();
}
ret = (err == KErrNone);
}
if (!ret) {
QSystemError error;
if (err)
error = QSystemError(err, QSystemError::NativeError);
else
error = QSystemError(errno, QSystemError::StandardLibraryError);
setError(QFile::ResizeError, error.toString());
}
return ret;
}
#else
bool QFSFileEngine::setSize(qint64 size)
{
Q_D(QFSFileEngine);
bool ret = false;
if (d->fd != -1)
ret = QT_FTRUNCATE(d->fd, size) == 0;
else if (d->fh)
ret = QT_FTRUNCATE(QT_FILENO(d->fh), size) == 0;
else
ret = QT_TRUNCATE(d->fileEntry.nativeFilePath().constData(), size) == 0;
if (!ret)
setError(QFile::ResizeError, qt_error_string(errno));
return ret;
}
#endif
QDateTime QFSFileEngine::fileTime(FileTime time) const
{
Q_D(const QFSFileEngine);
if (d->doStat(QFileSystemMetaData::Times))
return d->metaData.fileTime(time);
return QDateTime();
}
uchar *QFSFileEnginePrivate::map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags)
{
Q_Q(QFSFileEngine);
Q_UNUSED(flags);
if (openMode == QIODevice::NotOpen) {
q->setError(QFile::PermissionsError, qt_error_string(int(EACCES)));
return 0;
}
if (offset < 0 || offset != qint64(QT_OFF_T(offset))
|| size < 0 || quint64(size) > quint64(size_t(-1))) {
q->setError(QFile::UnspecifiedError, qt_error_string(int(EINVAL)));
return 0;
}
// If we know the mapping will extend beyond EOF, fail early to avoid
// undefined behavior. Otherwise, let mmap have its say.
if (doStat(QFileSystemMetaData::SizeAttribute)
&& (QT_OFF_T(size) > metaData.size() - QT_OFF_T(offset)))
qWarning("QFSFileEngine::map: Mapping a file beyond its size is not portable");
int access = 0;
if (openMode & QIODevice::ReadOnly) access |= PROT_READ;
if (openMode & QIODevice::WriteOnly) access |= PROT_WRITE;
#if defined(Q_OS_INTEGRITY)
int pageSize = sysconf(_SC_PAGESIZE);
#else
int pageSize = getpagesize();
#endif
int extra = offset % pageSize;
if (quint64(size + extra) > quint64((size_t)-1)) {
q->setError(QFile::UnspecifiedError, qt_error_string(int(EINVAL)));
return 0;
}
size_t realSize = (size_t)size + extra;
QT_OFF_T realOffset = QT_OFF_T(offset);
realOffset &= ~(QT_OFF_T(pageSize - 1));
#ifdef QT_SYMBIAN_USE_NATIVE_FILEMAP
TInt nativeMapError = KErrNone;
RFileMap mapping;
TUint mode(EFileMapRemovableMedia);
TUint64 nativeOffset = offset & ~(mapping.PageSizeInBytes() - 1);
//If the file was opened for write or read/write, then open the map for read/write
if (openMode & QIODevice::WriteOnly)
mode |= EFileMapWrite;
if (symbianFile.SubSessionHandle()) {
nativeMapError = mapping.Open(symbianFile, nativeOffset, size, mode);
} else {
//map file by name if we don't have a native handle
QString fn = QFileSystemEngine::absoluteName(fileEntry).nativeFilePath();
TUint filemode = EFileShareReadersOrWriters | EFileRead;
if (openMode & QIODevice::WriteOnly)
filemode |= EFileWrite;
nativeMapError = mapping.Open(qt_s60GetRFs(), qt_QString2TPtrC(fn), filemode, nativeOffset, size, mode);
}
if (nativeMapError == KErrNone) {
QScopedResource<RFileMap> ptr(mapping); //will call Close if adding to mapping throws an exception
uchar *address = mapping.Base() + (offset - nativeOffset);
maps[address] = mapping;
ptr.take();
return address;
}
QFile::FileError reportedError = QFile::UnspecifiedError;
switch (nativeMapError) {
case KErrAccessDenied:
case KErrPermissionDenied:
reportedError = QFile::PermissionsError;
break;
case KErrNoMemory:
reportedError = QFile::ResourceError;
break;
}
q->setError(reportedError, QSystemError(nativeMapError, QSystemError::NativeError).toString());
return 0;
#else
#ifdef Q_OS_SYMBIAN
//older phones & emulator don't support native mapping, so need to keep the open C way around for those.
void *mapAddress;
TRAPD(err, mapAddress = QT_MMAP((void*)0, realSize,
access, MAP_SHARED, getMapHandle(), realOffset));
if (err != KErrNone) {
qWarning("OpenC bug: leave from mmap %d", err);
mapAddress = MAP_FAILED;
errno = EINVAL;
}
#else
void *mapAddress = QT_MMAP((void*)0, realSize,
access, MAP_SHARED, nativeHandle(), realOffset);
#endif
if (MAP_FAILED != mapAddress) {
uchar *address = extra + static_cast<uchar*>(mapAddress);
maps[address] = QPair<int,size_t>(extra, realSize);
return address;
}
switch(errno) {
case EBADF:
q->setError(QFile::PermissionsError, qt_error_string(int(EACCES)));
break;
case ENFILE:
case ENOMEM:
q->setError(QFile::ResourceError, qt_error_string(int(errno)));
break;
case EINVAL:
// size are out of bounds
default:
q->setError(QFile::UnspecifiedError, qt_error_string(int(errno)));
break;
}
return 0;
#endif
}
bool QFSFileEnginePrivate::unmap(uchar *ptr)
{
#if !defined(Q_OS_INTEGRITY)
Q_Q(QFSFileEngine);
if (!maps.contains(ptr)) {
q->setError(QFile::PermissionsError, qt_error_string(EACCES));
return false;
}
#ifdef QT_SYMBIAN_USE_NATIVE_FILEMAP
RFileMap mapping = maps.value(ptr);
TInt err = mapping.Flush();
mapping.Close();
maps.remove(ptr);
if (err) {
q->setError(QFile::WriteError, QSystemError(err, QSystemError::NativeError).toString());
return false;
}
return true;
#else
uchar *start = ptr - maps[ptr].first;
size_t len = maps[ptr].second;
if (-1 == munmap(start, len)) {
q->setError(QFile::UnspecifiedError, qt_error_string(errno));
return false;
}
maps.remove(ptr);
return true;
#endif
#else
return false;
#endif
}
QT_END_NAMESPACE
#endif // QT_NO_FSFILEENGINE
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