diff options
Diffstat (limited to 'src/corelib/io/qfilesystemengine_unix.cpp')
| -rw-r--r-- | src/corelib/io/qfilesystemengine_unix.cpp | 660 |
1 files changed, 660 insertions, 0 deletions
diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp new file mode 100644 index 0000000000..c9ebaa48bc --- /dev/null +++ b/src/corelib/io/qfilesystemengine_unix.cpp @@ -0,0 +1,660 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qplatformdefs.h" +#include "qfilesystemengine_p.h" +#include "qplatformdefs.h" +#include "qfsfileengine.h" +#include "qfile.h" + +#include <QtCore/qvarlengtharray.h> + +#include <stdlib.h> // for realpath() +#include <unistd.h> +#include <stdio.h> +#include <errno.h> + + +#if defined(Q_OS_MAC) +# include <QtCore/private/qcore_mac_p.h> +#endif + +QT_BEGIN_NAMESPACE + +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) +static inline bool _q_isMacHidden(const char *nativePath) +{ + OSErr err; + + FSRef fsRef; + err = FSPathMakeRefWithOptions(reinterpret_cast<const UInt8 *>(nativePath), + kFSPathMakeRefDoNotFollowLeafSymlink, &fsRef, 0); + 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); + return (fileInfo->finderFlags & kIsInvisible); +} +#else +static inline bool _q_isMacHidden(const char *nativePath) +{ + Q_UNUSED(nativePath); + // no-op + return false; +} +#endif + +bool QFileSystemEngine::isCaseSensitive() +{ + return true; +} + +//static +QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link, QFileSystemMetaData &data) +{ +#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); + Q_CHECK_PTR(s); + len = ::readlink(link.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(link.nativeFilePath().constData(), s, PATH_MAX); +#endif + if (len > 0) { + QString ret; + if (!data.hasFlags(QFileSystemMetaData::DirectoryType)) + fillMetaData(link, data, QFileSystemMetaData::DirectoryType); + if (data.isDirectory() && s[0] != '/') { + QDir parent(link.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 (link.filePath().startsWith(QLatin1Char('/'))) { + ret.prepend(link.filePath().left(link.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 QFileSystemEntry(ret); + } +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) + { + FSRef fref; + if (FSPathMakeRef((const UInt8 *)QFile::encodeName(QDir::cleanPath(link.filePath())).data(), &fref, 0) == noErr) { + // TODO get the meta data info from the QFileSystemMetaData object + Boolean isAlias, isFolder; + if (FSResolveAliasFile(&fref, true, &isFolder, &isAlias) == noErr && isAlias) { + AliasHandle alias; + if (FSNewAlias(0, &fref, &alias) == noErr && alias) { + QCFString cfstr; + if (FSCopyAliasInfo(alias, 0, 0, &cfstr, 0, 0) == noErr) + return QFileSystemEntry(QCFString::toQString(cfstr)); + } + } + } + } +#endif + return QFileSystemEntry(); +} + +//static +QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data) +{ + if (entry.isEmpty() || entry.isRoot()) + return entry; + +#if !defined(Q_OS_MAC) && _POSIX_VERSION < 200809L + // realpath(X,0) is not supported + Q_UNUSED(data); + return QFileSystemEntry(slowCanonicalized(absoluteName(entry).filePath())); +#else + char *ret = 0; +# if defined(Q_OS_MAC) && !defined(QT_NO_CORESERVICES) + // Mac OS X 10.5.x doesn't support the realpath(X,0) extension we use here. + if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_6) { + ret = realpath(entry.nativeFilePath().constData(), (char*)0); + } else { + // on 10.5 we can use FSRef to resolve the file path. + QString path = QDir::cleanPath(entry.filePath()); + FSRef fsref; + if (FSPathMakeRef((const UInt8 *)path.toUtf8().data(), &fsref, 0) == noErr) { + CFURLRef urlref = CFURLCreateFromFSRef(NULL, &fsref); + CFStringRef canonicalPath = CFURLCopyFileSystemPath(urlref, kCFURLPOSIXPathStyle); + QString ret = QCFString::toQString(canonicalPath); + CFRelease(canonicalPath); + CFRelease(urlref); + return QFileSystemEntry(ret); + } + } +# else + ret = realpath(entry.nativeFilePath().constData(), (char*)0); +# endif + if (ret) { + data.knownFlagsMask |= QFileSystemMetaData::ExistsAttribute; + data.entryFlags |= QFileSystemMetaData::ExistsAttribute; + QString canonicalPath = QDir::cleanPath(QString::fromLocal8Bit(ret)); + free(ret); + return QFileSystemEntry(canonicalPath); + } else if (errno == ENOENT) { // file doesn't exist + data.knownFlagsMask |= QFileSystemMetaData::ExistsAttribute; + data.entryFlags &= ~(QFileSystemMetaData::ExistsAttribute); + return QFileSystemEntry(); + } + return entry; +#endif +} + +//static +QFileSystemEntry QFileSystemEngine::absoluteName(const QFileSystemEntry &entry) +{ + if (entry.isAbsolute()) + return entry; + + QByteArray orig = entry.nativeFilePath(); + QByteArray result; + if (orig.isEmpty() || !orig.startsWith('/')) { + QFileSystemEntry cur(currentPath()); + result = cur.nativeFilePath(); + } + if (!orig.isEmpty() && !(orig.length() == 1 && orig[0] == '.')) { + if (!result.isEmpty() && !result.endsWith('/')) + result.append('/'); + result.append(orig); + } + + if (result.length() == 1 && result[0] == '/') + return QFileSystemEntry(result, QFileSystemEntry::FromNativePath()); + const bool isDir = result.endsWith('/'); + + /* as long as QDir::cleanPath() operates on a QString we have to convert to a string here. + * ideally we never convert to a string since that loses information. Please fix after + * we get a QByteArray version of QDir::cleanPath() + */ + QFileSystemEntry resultingEntry(result, QFileSystemEntry::FromNativePath()); + QString stringVersion = QDir::cleanPath(resultingEntry.filePath()); + if (isDir) + stringVersion.append(QLatin1Char('/')); + return QFileSystemEntry(stringVersion); +} + +//static +QString QFileSystemEngine::resolveUserName(uint userId) +{ +#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 + + struct passwd *pw = 0; +#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD) + struct passwd entry; + getpwuid_r(userId, &entry, buf.data(), buf.size(), &pw); +#else + pw = getpwuid(userId); +#endif + if (pw) + return QFile::decodeName(QByteArray(pw->pw_name)); + return QString(); +} + +//static +QString QFileSystemEngine::resolveGroupName(uint groupId) +{ +#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 + + 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(groupId, &entry, buf.data(), buf.size(), &gr) + || errno != ERANGE) + break; + } +#else + gr = getgrgid(groupId); +#endif + if (gr) + return QFile::decodeName(QByteArray(gr->gr_name)); + return QString(); +} + +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) +//static +QString QFileSystemEngine::bundleName(const QFileSystemEntry &entry) +{ + QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, QCFString(entry.filePath()), + kCFURLPOSIXPathStyle, true); + if (QCFType<CFDictionaryRef> dict = CFBundleCopyInfoDictionaryForURL(url)) { + if (CFTypeRef name = (CFTypeRef)CFDictionaryGetValue(dict, kCFBundleNameKey)) { + if (CFGetTypeID(name) == CFStringGetTypeID()) + return QCFString::toQString((CFStringRef)name); + } + } + return QString(); +} +#endif + +//static +bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemMetaData &data, + QFileSystemMetaData::MetaDataFlags what) +{ +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) + if (what & QFileSystemMetaData::BundleType) { + if (!data.hasFlags(QFileSystemMetaData::DirectoryType)) + what |= QFileSystemMetaData::DirectoryType; + } +#endif + +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) \ + && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5 + if (what & QFileSystemMetaData::HiddenAttribute) { + // Mac OS >= 10.5: st_flags & UF_HIDDEN + what |= QFileSystemMetaData::PosixStatFlags; + } +#endif + + if (what & QFileSystemMetaData::PosixStatFlags) + what |= QFileSystemMetaData::PosixStatFlags; + + if (what & QFileSystemMetaData::ExistsAttribute) { + // FIXME: Would other queries being performed provide this bit? + what |= QFileSystemMetaData::PosixStatFlags; + } + + data.entryFlags &= ~what; + + const char * nativeFilePath; + int nativeFilePathLength; + { + const QByteArray &path = entry.nativeFilePath(); + nativeFilePath = path.constData(); + nativeFilePathLength = path.size(); + } + + bool entryExists = true; // innocent until proven otherwise + + QT_STATBUF statBuffer; + bool statBufferValid = false; + if (what & QFileSystemMetaData::LinkType) { + if (QT_LSTAT(nativeFilePath, &statBuffer) == 0) { + if (S_ISLNK(statBuffer.st_mode)) { + data.entryFlags |= QFileSystemMetaData::LinkType; + } else { + statBufferValid = true; + data.entryFlags &= ~QFileSystemMetaData::PosixStatFlags; + } + } else { + entryExists = false; + } + + data.knownFlagsMask |= QFileSystemMetaData::LinkType; + } + + if (statBufferValid || (what & QFileSystemMetaData::PosixStatFlags)) { + if (entryExists && !statBufferValid) + statBufferValid = (QT_STAT(nativeFilePath, &statBuffer) == 0); + + if (statBufferValid) + data.fillFromStatBuf(statBuffer); + else { + entryExists = false; + data.creationTime_ = 0; + data.modificationTime_ = 0; + data.accessTime_ = 0; + data.size_ = 0; + data.userId_ = (uint) -2; + data.groupId_ = (uint) -2; + } + + // reset the mask + data.knownFlagsMask |= QFileSystemMetaData::PosixStatFlags + | QFileSystemMetaData::ExistsAttribute; + } + +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) + if (what & QFileSystemMetaData::AliasType) + { + if (entryExists) { + FSRef fref; + if (FSPathMakeRef((const UInt8 *)nativeFilePath, &fref, NULL) == noErr) { + Boolean isAlias, isFolder; + if (FSIsAliasFile(&fref, &isAlias, &isFolder) == noErr) { + if (isAlias) + data.entryFlags |= QFileSystemMetaData::AliasType; + } + } + } + data.knownFlagsMask |= QFileSystemMetaData::AliasType; + } +#endif + + if (what & QFileSystemMetaData::UserPermissions) { + // calculate user permissions + + if (entryExists) { + if (what & QFileSystemMetaData::UserReadPermission) { + if (QT_ACCESS(nativeFilePath, R_OK) == 0) + data.entryFlags |= QFileSystemMetaData::UserReadPermission; + } + if (what & QFileSystemMetaData::UserWritePermission) { + if (QT_ACCESS(nativeFilePath, W_OK) == 0) + data.entryFlags |= QFileSystemMetaData::UserWritePermission; + } + if (what & QFileSystemMetaData::UserExecutePermission) { + if (QT_ACCESS(nativeFilePath, X_OK) == 0) + data.entryFlags |= QFileSystemMetaData::UserExecutePermission; + } + } + data.knownFlagsMask |= (what & QFileSystemMetaData::UserPermissions); + } + + if (what & QFileSystemMetaData::HiddenAttribute + && !data.isHidden()) { + QString fileName = entry.fileName(); + if ((fileName.size() > 0 && fileName.at(0) == QLatin1Char('.')) + || (entryExists && _q_isMacHidden(nativeFilePath))) + data.entryFlags |= QFileSystemMetaData::HiddenAttribute; + data.knownFlagsMask |= QFileSystemMetaData::HiddenAttribute; + } + +#if !defined(QWS) && !defined(Q_WS_QPA) && defined(Q_OS_MAC) + if (what & QFileSystemMetaData::BundleType) { + if (entryExists && data.isDirectory()) { + QCFType<CFStringRef> path = CFStringCreateWithBytes(0, + (const UInt8*)nativeFilePath, nativeFilePathLength, + kCFStringEncodingUTF8, false); + QCFType<CFURLRef> url = CFURLCreateWithFileSystemPath(0, path, + kCFURLPOSIXPathStyle, true); + + UInt32 type, creator; + if (CFBundleGetPackageInfoInDirectory(url, &type, &creator)) + data.entryFlags |= QFileSystemMetaData::BundleType; + } + + data.knownFlagsMask |= QFileSystemMetaData::BundleType; + } +#endif + + return data.hasFlags(what); +} + +//static +bool QFileSystemEngine::createDirectory(const QFileSystemEntry &entry, bool createParents) +{ + QString dirName = entry.filePath(); + if (createParents) { + 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 (QT_MKDIR(chunk, 0777) != 0) { + return false; + } + } + } + return true; + } +#if defined(Q_OS_DARWIN) // Mac X doesn't support trailing /'s + if (dirName.endsWith(QLatin1Char('/'))) + dirName.chop(1); +#endif + return (QT_MKDIR(QFile::encodeName(dirName), 0777) == 0); +} + +//static +bool QFileSystemEngine::removeDirectory(const QFileSystemEntry &entry, bool removeEmptyParents) +{ + if (removeEmptyParents) { + QString dirName = QDir::cleanPath(entry.filePath()); + 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(entry.filePath())) == 0; +} + +//static +bool QFileSystemEngine::createLink(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error) +{ + if (::symlink(source.nativeFilePath().constData(), target.nativeFilePath().constData()) == 0) + return true; + error = QSystemError(errno, QSystemError::StandardLibraryError); + return false; +} + +//static +bool QFileSystemEngine::copyFile(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error) +{ + Q_UNUSED(source); + Q_UNUSED(target); + error = QSystemError(ENOSYS, QSystemError::StandardLibraryError); //Function not implemented + return false; +} + +//static +bool QFileSystemEngine::renameFile(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error) +{ + if (::rename(source.nativeFilePath().constData(), target.nativeFilePath().constData()) == 0) + return true; + error = QSystemError(errno, QSystemError::StandardLibraryError); + return false; +} + +//static +bool QFileSystemEngine::removeFile(const QFileSystemEntry &entry, QSystemError &error) +{ + if (unlink(entry.nativeFilePath().constData()) == 0) + return true; + error = QSystemError(errno, QSystemError::StandardLibraryError); + return false; + +} + +//static +bool QFileSystemEngine::setPermissions(const QFileSystemEntry &entry, QFile::Permissions permissions, QSystemError &error, QFileSystemMetaData *data) +{ + mode_t mode = 0; + if (permissions & QFile::ReadOwner) + mode |= S_IRUSR; + if (permissions & QFile::WriteOwner) + mode |= S_IWUSR; + if (permissions & QFile::ExeOwner) + mode |= S_IXUSR; + if (permissions & QFile::ReadUser) + mode |= S_IRUSR; + if (permissions & QFile::WriteUser) + mode |= S_IWUSR; + if (permissions & QFile::ExeUser) + mode |= S_IXUSR; + if (permissions & QFile::ReadGroup) + mode |= S_IRGRP; + if (permissions & QFile::WriteGroup) + mode |= S_IWGRP; + if (permissions & QFile::ExeGroup) + mode |= S_IXGRP; + if (permissions & QFile::ReadOther) + mode |= S_IROTH; + if (permissions & QFile::WriteOther) + mode |= S_IWOTH; + if (permissions & QFile::ExeOther) + mode |= S_IXOTH; + + bool success = ::chmod(entry.nativeFilePath().constData(), mode) == 0; + if (success && data) { + data->entryFlags &= ~QFileSystemMetaData::Permissions; + data->entryFlags |= QFileSystemMetaData::MetaDataFlag(uint(permissions)); + data->knownFlagsMask |= QFileSystemMetaData::Permissions; + } + if (!success) + error = QSystemError(errno, QSystemError::StandardLibraryError); + return success; +} + +QString QFileSystemEngine::homePath() +{ + QString home = QFile::decodeName(qgetenv("HOME")); + if (home.isNull()) + home = rootPath(); + return QDir::cleanPath(home); +} + +QString QFileSystemEngine::rootPath() +{ + return QLatin1String("/"); +} + +QString QFileSystemEngine::tempPath() +{ +#ifdef QT_UNIX_TEMP_PATH_OVERRIDE + return QLatin1String(QT_UNIX_TEMP_PATH_OVERRIDE); +#else + QString temp = QFile::decodeName(qgetenv("TMPDIR")); + if (temp.isEmpty()) + temp = QLatin1String("/tmp/"); + return QDir::cleanPath(temp); +#endif +} + +bool QFileSystemEngine::setCurrentPath(const QFileSystemEntry &path) +{ + int r; + r = QT_CHDIR(path.nativeFilePath()); + return r >= 0; +} + +QFileSystemEntry QFileSystemEngine::currentPath() +{ + QFileSystemEntry 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 = QFileSystemEntry(QByteArray(currentName), QFileSystemEntry::FromNativePath()); +# if defined(QT_DEBUG) + if (result.isEmpty()) + qWarning("QFSFileEngine::currentPath: getcwd() failed"); +# endif +#endif + } else { +# if defined(QT_DEBUG) + qWarning("QFSFileEngine::currentPath: stat(\".\") failed"); +# endif + } + return result; +} +QT_END_NAMESPACE |