/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qplatformdefs.h"
#include "qabstractfileengine.h"
#include "private/qfsfileengine_p.h"
#ifndef QT_NO_FSFILEENGINE
#ifndef QT_NO_REGEXP
# include "qregexp.h"
#endif
#include "qfile.h"
#include "qdir.h"
#include "qdatetime.h"
#include "qdebug.h"
#include "qvarlengtharray.h"
#include <sys/mman.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#if !defined(QWS) && defined(Q_OS_MAC)
# include <private/qcore_mac_p.h>
#endif
QT_BEGIN_NAMESPACE
/*!
\internal
Returns the stdlib open string corresponding to a QIODevice::OpenMode.
*/
static QByteArray openModeToFopenMode(QIODevice::OpenMode flags, const QString &fileName = QString())
{
QByteArray mode;
if ((flags & QIODevice::ReadOnly) && !(flags & QIODevice::Truncate)) {
mode = "rb";
if (flags & QIODevice::WriteOnly) {
if (!fileName.isEmpty() &&QFile::exists(fileName))
mode = "rb+";
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 += "+";
}
return mode;
}
/*!
\internal
Returns the stdio open flags corresponding to a QIODevice::OpenMode.
*/
static 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;
}
#ifdef O_CLOEXEC
// supported on Linux >= 2.6.23; avoids one extra system call
// and avoids a race condition: if another thread forks, we could
// end up leaking a file descriptor...
oflags |= O_CLOEXEC;
#endif
return oflags;
}
/*!
\internal
Sets the file descriptor to close on exec. That is, the file
descriptor is not inherited by child processes.
*/
static bool setCloseOnExec(int fd)
{
return fd != -1 && fcntl(fd, F_SETFD, FD_CLOEXEC) != -1;
}
/*!
\internal
*/
void QFSFileEnginePrivate::nativeInitFileName()
{
nativeFilePath = QFile::encodeName(filePath);
}
/*!
\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(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;
}
QT_STATBUF statBuf;
if (QT_FSTAT(fd, &statBuf) != -1) {
if ((statBuf.st_mode & S_IFMT) == S_IFDIR) {
q->setError(QFile::OpenError, QLatin1String("file to open is a directory"));
QT_CLOSE(fd);
return false;
}
}
#ifndef O_CLOEXEC
// not needed on Linux >= 2.6.23
setCloseOnExec(fd); // ignore failure
#endif
// 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, filePath);
// Try to open the file in buffered mode.
do {
fh = QT_FOPEN(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;
}
QT_STATBUF statBuf;
if (QT_FSTAT(fileno(fh), &statBuf) != -1) {
if ((statBuf.st_mode & S_IFMT) == S_IFDIR) {
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;
}
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeClose()
{
return closeFdFh();
}
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeFlush()
{
return fh ? flushFh() : fd != -1;
}
/*!
\internal
*/
qint64 QFSFileEnginePrivate::nativeRead(char *data, qint64 len)
{
Q_Q(QFSFileEngine);
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
int v = 1;
if ((oldFlags & O_NONBLOCK) == 0)
fcntl(QT_FILENO(fh), F_SETFL, oldFlags | O_NONBLOCK, &v, sizeof(v));
// 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) {
int v = 1;
fcntl(QT_FILENO(fh), F_SETFL, oldFlags, &v, sizeof(v));
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) {
int v = 1;
fcntl(QT_FILENO(fh), F_SETFL, oldFlags, &v, sizeof(v));
}
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)
{
return writeFdFh(data, len);
}
/*!
\internal
*/
qint64 QFSFileEnginePrivate::nativePos() const
{
return posFdFh();
}
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeSeek(qint64 pos)
{
return seekFdFh(pos);
}
/*!
\internal
*/
int QFSFileEnginePrivate::nativeHandle() const
{
return fh ? fileno(fh) : fd;
}
/*!
\internal
*/
bool QFSFileEnginePrivate::nativeIsSequential() const
{
return isSequentialFdFh();
}
bool QFSFileEngine::remove()
{
Q_D(QFSFileEngine);
return unlink(d->nativeFilePath.constData()) == 0;
}
bool QFSFileEngine::copy(const QString &)
{
// ### Add copy code for Unix here
return false;
}
bool QFSFileEngine::rename(const QString &newName)
{
Q_D(QFSFileEngine);
return ::rename(d->nativeFilePath.constData(), QFile::encodeName(newName).constData()) == 0;
}
bool QFSFileEngine::link(const QString &newName)
{
Q_D(QFSFileEngine);
return ::symlink(d->nativeFilePath.constData(), QFile::encodeName(newName).constData()) == 0;
}
qint64 QFSFileEnginePrivate::nativeSize() const
{
return sizeFdFh();
}
bool QFSFileEngine::mkdir(const QString &name, bool createParentDirectories) const
{
QString dirName = name;
if (createParentDirectories) {
dirName = QDir::cleanPath(dirName);
for(int oldslash = -1, slash=0; slash != -1; oldslash = slash) {
slash = dirName.indexOf(QDir::separator(), oldslash+1);
if (slash == -1) {
if (oldslash == dirName.length())
break;
slash = dirName.length();
}
if (slash) {
QByteArray chunk = QFile::encodeName(dirName.left(slash));
QT_STATBUF st;
if (QT_STAT(chunk, &st) != -1) {
if ((st.st_mode & S_IFMT) != S_IFDIR)
return false;
} else if (::mkdir(chunk, 0777) != 0) {
return false;
}
}
}
return true;
}
#if defined(Q_OS_DARWIN) // Mac X doesn't support trailing /'s
if (dirName[dirName.length() - 1] == QLatin1Char('/'))
dirName = dirName.left(dirName.length() - 1);
#endif
return (::mkdir(QFile::encodeName(dirName), 0777) == 0);
}
bool QFSFileEngine::rmdir(const QString &name, bool recurseParentDirectories) const
{
QString dirName = name;
if (recurseParentDirectories) {
dirName = QDir::cleanPath(dirName);
for(int oldslash = 0, slash=dirName.length(); slash > 0; oldslash = slash) {
QByteArray chunk = QFile::encodeName(dirName.left(slash));
QT_STATBUF st;
if (QT_STAT(chunk, &st) != -1) {
if ((st.st_mode & S_IFMT) != S_IFDIR)
return false;
if (::rmdir(chunk) != 0)
return oldslash != 0;
} else {
return false;
}
slash = dirName.lastIndexOf(QDir::separator(), oldslash-1);
}
return true;
}
return ::rmdir(QFile::encodeName(dirName)) == 0;
}
bool QFSFileEngine::caseSensitive() const
{
return true;
}
bool QFSFileEngine::setCurrentPath(const QString &path)
{
int r;
r = ::chdir(QFile::encodeName(path));
return r >= 0;
}
QString QFSFileEngine::currentPath(const QString &)
{
QString result;
QT_STATBUF st;
if (QT_STAT(".", &st) == 0) {
#if defined(__GLIBC__) && !defined(PATH_MAX)
char *currentName = ::get_current_dir_name();
if (currentName) {
result = QFile::decodeName(QByteArray(currentName));
::free(currentName);
}
#else
char currentName[PATH_MAX+1];
if (::getcwd(currentName, PATH_MAX))
result = QFile::decodeName(QByteArray(currentName));
#endif
#if defined(QT_DEBUG)
if (result.isNull())
qWarning("QDir::currentPath: getcwd() failed");
#endif
} else {
#if defined(QT_DEBUG)
qWarning("QDir::currentPath: stat(\".\") failed");
#endif
}
return result;
}
QString QFSFileEngine::homePath()
{
QString home = QFile::decodeName(qgetenv("HOME"));
if (home.isNull())
home = rootPath();
return home;
}
QString QFSFileEngine::rootPath()
{
return QString::fromLatin1("/");
}
QString QFSFileEngine::tempPath()
{
QString temp = QFile::decodeName(qgetenv("TMPDIR"));
if (temp.isEmpty())
temp = QString::fromLatin1("/tmp/");
return temp;
}
QFileInfoList QFSFileEngine::drives()
{
QFileInfoList ret;
ret.append(rootPath());
return ret;
}
bool QFSFileEnginePrivate::doStat() const
{
if (tried_stat == 0) {
QFSFileEnginePrivate *that = const_cast<QFSFileEnginePrivate*>(this);
if (fh && nativeFilePath.isEmpty()) {
// ### actually covers two cases: d->fh and when the file is not open
that->could_stat = (QT_FSTAT(fileno(fh), &st) == 0);
} else if (fd == -1) {
// ### actually covers two cases: d->fh and when the file is not open
that->could_stat = (QT_STAT(nativeFilePath.constData(), &st) == 0);
} else {
that->could_stat = (QT_FSTAT(fd, &st) == 0);
}
that->tried_stat = 1;
}
return could_stat;
}
bool QFSFileEnginePrivate::isSymlink() const
{
if (need_lstat) {
QFSFileEnginePrivate *that = const_cast<QFSFileEnginePrivate *>(this);
that->need_lstat = false;
QT_STATBUF st; // don't clobber our main one
that->is_link = (QT_LSTAT(nativeFilePath.constData(), &st) == 0) ? S_ISLNK(st.st_mode) : false;
}
return is_link;
}
#if !defined(QWS) && defined(Q_OS_MAC)
static bool _q_isMacHidden(const QString &path)
{
OSErr err = noErr;
FSRef fsRef;
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
err = FSPathMakeRefWithOptions(reinterpret_cast<const UInt8 *>(QFile::encodeName(QDir::cleanPath(path)).constData()),
kFSPathMakeRefDoNotFollowLeafSymlink, &fsRef, 0);
} else
#endif
{
QFileInfo fi(path);
FSRef parentRef;
err = FSPathMakeRef(reinterpret_cast<const UInt8 *>(fi.absoluteDir().absolutePath().toUtf8().constData()),
&parentRef, 0);
if (err == noErr) {
QString fileName = fi.fileName();
err = FSMakeFSRefUnicode(&parentRef, fileName.length(),
reinterpret_cast<const UniChar *>(fileName.unicode()),
kTextEncodingUnknown, &fsRef);
}
}
if (err != noErr)
return false;
FSCatalogInfo catInfo;
err = FSGetCatalogInfo(&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL);
if (err != noErr)
return false;
FileInfo * const fileInfo = reinterpret_cast<FileInfo*>(&catInfo.finderInfo);
bool result = (fileInfo->finderFlags & kIsInvisible);
return result;
}
#endif
/*!
\reimp
*/
QAbstractFileEngine::FileFlags QFSFileEngine::fileFlags(FileFlags type) const
{
Q_D(const QFSFileEngine);
// Force a stat, so that we're guaranteed to get up-to-date results
if (type & QAbstractFileEngine::FileFlag(QAbstractFileEngine::Refresh)) {
d->tried_stat = 0;
d->need_lstat = 1;
}
QAbstractFileEngine::FileFlags ret = 0;
bool exists = d->doStat();
if (!exists && !d->isSymlink())
return ret;
if (exists && (type & PermsMask)) {
if (d->st.st_mode & S_IRUSR)
ret |= ReadOwnerPerm;
if (d->st.st_mode & S_IWUSR)
ret |= WriteOwnerPerm;
if (d->st.st_mode & S_IXUSR)
ret |= ExeOwnerPerm;
if (d->st.st_mode & S_IRUSR)
ret |= ReadUserPerm;
if (d->st.st_mode & S_IWUSR)
ret |= WriteUserPerm;
if (d->st.st_mode & S_IXUSR)
ret |= ExeUserPerm;
if (d->st.st_mode & S_IRGRP)
ret |= ReadGroupPerm;
if (d->st.st_mode & S_IWGRP)
ret |= WriteGroupPerm;
if (d->st.st_mode & S_IXGRP)
ret |= ExeGroupPerm;
if (d->st.st_mode & S_IROTH)
ret |= ReadOtherPerm;
if (d->st.st_mode & S_IWOTH)
ret |= WriteOtherPerm;
if (d->st.st_mode & S_IXOTH)
ret |= ExeOtherPerm;
}
if (type & TypesMask) {
#if !defined(QWS) && defined(Q_OS_MAC)
bool foundAlias = false;
{
FSRef fref;
if (FSPathMakeRef((const UInt8 *)QFile::encodeName(QDir::cleanPath(d->filePath)).data(),
&fref, NULL) == noErr) {
Boolean isAlias, isFolder;
if (FSIsAliasFile(&fref, &isAlias, &isFolder) == noErr && isAlias) {
foundAlias = true;
ret |= LinkType;
}
}
}
if (!foundAlias)
#endif
{
if ((type & LinkType) && d->isSymlink())
ret |= LinkType;
if (exists && (d->st.st_mode & S_IFMT) == S_IFREG)
ret |= FileType;
else if (exists && (d->st.st_mode & S_IFMT) == S_IFDIR)
ret |= DirectoryType;
#if !defined(QWS) && defined(Q_OS_MAC)
if((ret & DirectoryType) && (type & BundleType)) {
QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, QCFString(d->filePath),
kCFURLPOSIXPathStyle, true);
UInt32 type, creator;
if(CFBundleGetPackageInfoInDirectory(url, &type, &creator))
ret |= BundleType;
}
#endif
}
}
if (type & FlagsMask) {
ret |= LocalDiskFlag;
if (exists)
ret |= ExistsFlag;
if (fileName(BaseName)[0] == QLatin1Char('.')
#if !defined(QWS) && defined(Q_OS_MAC)
|| _q_isMacHidden(d->filePath)
#endif
)
ret |= HiddenFlag;
if (d->filePath == QLatin1String("/"))
ret |= RootFlag;
}
return ret;
}
QString QFSFileEngine::fileName(FileName file) const
{
Q_D(const QFSFileEngine);
if (file == BundleName) {
#if !defined(QWS) && defined(Q_OS_MAC)
QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, QCFString(d->filePath),
kCFURLPOSIXPathStyle, true);
if(CFDictionaryRef dict = CFBundleCopyInfoDictionaryForURL(url)) {
if(CFTypeRef name = (CFTypeRef)CFDictionaryGetValue(dict, kCFBundleNameKey)) {
if(CFGetTypeID(name) == CFStringGetTypeID())
return QCFString::toQString((CFStringRef)name);
}
}
#endif
return QString();
} else if (file == BaseName) {
int slash = d->filePath.lastIndexOf(QLatin1Char('/'));
if (slash != -1)
return d->filePath.mid(slash + 1);
} else if (file == PathName) {
int slash = d->filePath.lastIndexOf(QLatin1Char('/'));
if (slash == -1)
return QLatin1String(".");
else if (!slash)
return QLatin1String("/");
return d->filePath.left(slash);
} else if (file == AbsoluteName || file == AbsolutePathName) {
QString ret;
if (d->filePath.isEmpty() || !d->filePath.startsWith(QLatin1Char('/')))
ret = QDir::currentPath();
if (!d->filePath.isEmpty() && d->filePath != QLatin1String(".")) {
if (!ret.isEmpty() && !ret.endsWith(QLatin1Char('/')))
ret += QLatin1Char('/');
ret += d->filePath;
}
if (ret == QLatin1String("/"))
return ret;
bool isDir = ret.endsWith(QLatin1Char('/'));
ret = QDir::cleanPath(ret);
if (isDir)
ret += QLatin1String("/");
if (file == AbsolutePathName) {
int slash = ret.lastIndexOf(QLatin1Char('/'));
if (slash == -1)
return QDir::currentPath();
else if (!slash)
return QLatin1String("/");
return ret.left(slash);
}
return ret;
} else if (file == CanonicalName || file == CanonicalPathName) {
if (!(fileFlags(ExistsFlag) & ExistsFlag))
return QString();
QString ret = QFSFileEnginePrivate::canonicalized(fileName(AbsoluteName));
if (!ret.isEmpty() && file == CanonicalPathName) {
int slash = ret.lastIndexOf(QLatin1Char('/'));
if (slash == -1)
ret = QDir::currentPath();
else if (slash == 0)
ret = QLatin1String("/");
ret = ret.left(slash);
}
return ret;
} else if (file == LinkName) {
if (d->isSymlink()) {
#if defined(__GLIBC__) && !defined(PATH_MAX)
#define PATH_CHUNK_SIZE 256
char *s = 0;
int len = -1;
int size = PATH_CHUNK_SIZE;
while (1) {
s = (char *) ::realloc(s, size);
if (s == 0) {
len = -1;
break;
}
len = ::readlink(d->nativeFilePath.constData(), s, size);
if (len < 0) {
::free(s);
break;
}
if (len < size) {
break;
}
size *= 2;
}
#else
char s[PATH_MAX+1];
int len = readlink(d->nativeFilePath.constData(), s, PATH_MAX);
#endif
if (len > 0) {
QString ret;
if (d->doStat() && S_ISDIR(d->st.st_mode) && s[0] != '/') {
QDir parent(d->filePath);
parent.cdUp();
ret = parent.path();
if (!ret.isEmpty() && !ret.endsWith(QLatin1Char('/')))
ret += QLatin1Char('/');
}
s[len] = '\0';
ret += QFile::decodeName(QByteArray(s));
#if defined(__GLIBC__) && !defined(PATH_MAX)
::free(s);
#endif
if (!ret.startsWith(QLatin1Char('/'))) {
if (d->filePath.startsWith(QLatin1Char('/'))) {
ret.prepend(d->filePath.left(d->filePath.lastIndexOf(QLatin1Char('/')))
+ QLatin1Char('/'));
} else {
ret.prepend(QDir::currentPath() + QLatin1Char('/'));
}
}
ret = QDir::cleanPath(ret);
if (ret.size() > 1 && ret.endsWith(QLatin1Char('/')))
ret.chop(1);
return ret;
}
}
#if !defined(QWS) && defined(Q_OS_MAC)
{
FSRef fref;
if (FSPathMakeRef((const UInt8 *)QFile::encodeName(QDir::cleanPath(d->filePath)).data(), &fref, 0) == noErr) {
Boolean isAlias, isFolder;
if (FSResolveAliasFile(&fref, true, &isFolder, &isAlias) == noErr && isAlias) {
AliasHandle alias;
if (FSNewAlias(0, &fref, &alias) == noErr && alias) {
CFStringRef cfstr;
if (FSCopyAliasInfo(alias, 0, 0, &cfstr, 0, 0) == noErr)
return QCFString::toQString(cfstr);
}
}
}
}
#endif
return QString();
}
return d->filePath;
}
bool QFSFileEngine::isRelativePath() const
{
Q_D(const QFSFileEngine);
int len = d->filePath.length();
if (len == 0)
return true;
return d->filePath[0] != QLatin1Char('/');
}
uint QFSFileEngine::ownerId(FileOwner own) const
{
Q_D(const QFSFileEngine);
static const uint nobodyID = (uint) -2;
if (d->doStat()) {
if (own == OwnerUser)
return d->st.st_uid;
else
return d->st.st_gid;
}
return nobodyID;
}
QString QFSFileEngine::owner(FileOwner own) const
{
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD)
int size_max = sysconf(_SC_GETPW_R_SIZE_MAX);
if (size_max == -1)
size_max = 1024;
QVarLengthArray<char, 1024> buf(size_max);
#endif
if (own == OwnerUser) {
struct passwd *pw = 0;
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD)
struct passwd entry;
getpwuid_r(ownerId(own), &entry, buf.data(), buf.size(), &pw);
#else
pw = getpwuid(ownerId(own));
#endif
if (pw)
return QFile::decodeName(QByteArray(pw->pw_name));
} else if (own == OwnerGroup) {
struct group *gr = 0;
#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD)
size_max = sysconf(_SC_GETGR_R_SIZE_MAX);
if (size_max == -1)
size_max = 1024;
buf.resize(size_max);
struct group entry;
// Some large systems have more members than the POSIX max size
// Loop over by doubling the buffer size (upper limit 250k)
for (unsigned size = size_max; size < 256000; size += size)
{
buf.resize(size);
// ERANGE indicates that the buffer was too small
if (!getgrgid_r(ownerId(own), &entry, buf.data(), buf.size(), &gr)
|| errno != ERANGE)
break;
}
#else
gr = getgrgid(ownerId(own));
#endif
if (gr)
return QFile::decodeName(QByteArray(gr->gr_name));
}
return QString();
}
bool QFSFileEngine::setPermissions(uint perms)
{
Q_D(QFSFileEngine);
mode_t mode = 0;
if (perms & ReadOwnerPerm)
mode |= S_IRUSR;
if (perms & WriteOwnerPerm)
mode |= S_IWUSR;
if (perms & ExeOwnerPerm)
mode |= S_IXUSR;
if (perms & ReadUserPerm)
mode |= S_IRUSR;
if (perms & WriteUserPerm)
mode |= S_IWUSR;
if (perms & ExeUserPerm)
mode |= S_IXUSR;
if (perms & ReadGroupPerm)
mode |= S_IRGRP;
if (perms & WriteGroupPerm)
mode |= S_IWGRP;
if (perms & ExeGroupPerm)
mode |= S_IXGRP;
if (perms & ReadOtherPerm)
mode |= S_IROTH;
if (perms & WriteOtherPerm)
mode |= S_IWOTH;
if (perms & ExeOtherPerm)
mode |= S_IXOTH;
if (d->fd != -1)
return !fchmod(d->fd, mode);
return !::chmod(d->nativeFilePath.constData(), mode);
}
bool QFSFileEngine::setSize(qint64 size)
{
Q_D(QFSFileEngine);
if (d->fd != -1)
return !QT_FTRUNCATE(d->fd, size);
if (d->fh)
return !QT_FTRUNCATE(QT_FILENO(d->fh), size);
return !QT_TRUNCATE(d->nativeFilePath.constData(), size);
}
QDateTime QFSFileEngine::fileTime(FileTime time) const
{
Q_D(const QFSFileEngine);
QDateTime ret;
if (d->doStat()) {
if (time == CreationTime)
ret.setTime_t(d->st.st_ctime ? d->st.st_ctime : d->st.st_mtime);
else if (time == ModificationTime)
ret.setTime_t(d->st.st_mtime);
else if (time == AccessTime)
ret.setTime_t(d->st.st_atime);
}
return ret;
}
uchar *QFSFileEnginePrivate::map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags)
{
Q_Q(QFSFileEngine);
Q_UNUSED(flags);
if (offset < 0) {
q->setError(QFile::UnspecifiedError, qt_error_string(int(EINVAL)));
return 0;
}
if (openMode == QIODevice::NotOpen) {
q->setError(QFile::PermissionsError, qt_error_string(int(EACCES)));
return 0;
}
int access = 0;
if (openMode & QIODevice::ReadOnly) access |= PROT_READ;
if (openMode & QIODevice::WriteOnly) access |= PROT_WRITE;
int pagesSize = getpagesize();
int realOffset = offset / pagesSize;
int extra = offset % pagesSize;
void *mapAddress = mmap((void*)0, (size_t)size + extra,
access, MAP_SHARED, nativeHandle(), realOffset * pagesSize);
if (MAP_FAILED != mapAddress) {
uchar *address = extra + static_cast<uchar*>(mapAddress);
maps[address] = QPair<int,int>(extra, size);
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;
}
bool QFSFileEnginePrivate::unmap(uchar *ptr)
{
Q_Q(QFSFileEngine);
if (!maps.contains(ptr)) {
q->setError(QFile::PermissionsError, qt_error_string(EACCES));
return false;
}
uchar *start = ptr - maps[ptr].first;
int len = maps[ptr].second;
if (-1 == munmap(start, len)) {
q->setError(QFile::UnspecifiedError, qt_error_string(errno));
return false;
}
maps.remove(ptr);
return true;
}
QT_END_NAMESPACE
#endif // QT_NO_FSFILEENGINE