Pass QFileSystemMetaData reference into QFileSystemEngine::canonicalName

On symbian, this allows us to use the cached ExistsAttribute
On symbian and unix, this allows us to update the caller's knowledge of
ExistsAttribute (potentially saving a stat later)

Reviewed-By: joao

7 files changed, 14 insertions, 9 deletions

diff --git a/src/corelib/io/qfileinfo.cpp b/src/corelib/io/qfileinfo.cpp
index 83df26d..4f5a4ab 100644
--- a/src/corelib/io/qfileinfo.cpp
+++ b/src/corelib/io/qfileinfo.cpp
@@ -57,7 +57,7 @@ QString QFileInfoPrivate::getFileName(QAbstractFileEngine::FileName name) const
         switch (name) {
             case QAbstractFileEngine::CanonicalName:
             case QAbstractFileEngine::CanonicalPathName: {
-                QFileSystemEntry entry = QFileSystemEngine::canonicalName(fileEntry);
+                QFileSystemEntry entry = QFileSystemEngine::canonicalName(fileEntry, metaData);
                 if (cache_enabled) { // be smart and store both
                     fileNames[QAbstractFileEngine::CanonicalName] = entry.filePath();
                     fileNames[QAbstractFileEngine::CanonicalPathName] = entry.path();
diff --git a/src/corelib/io/qfilesystemengine_p.h b/src/corelib/io/qfilesystemengine_p.h
index 1068e76..b3bbd65 100644
--- a/src/corelib/io/qfilesystemengine_p.h
+++ b/src/corelib/io/qfilesystemengine_p.h
@@ -65,7 +65,7 @@ public:
     static bool isCaseSensitive();
 
     static QFileSystemEntry getLinkTarget(const QFileSystemEntry &link, QFileSystemMetaData &data);
-    static QFileSystemEntry canonicalName(const QFileSystemEntry &entry);
+    static QFileSystemEntry canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data);
     static QFileSystemEntry absoluteName(const QFileSystemEntry &entry);
     static QString resolveUserName(const QFileSystemEntry &entry, QFileSystemMetaData &data);
     static QString resolveUserName(uint userId);
diff --git a/src/corelib/io/qfilesystemengine_symbian.cpp b/src/corelib/io/qfilesystemengine_symbian.cpp
index ca559da..9b81571 100644
--- a/src/corelib/io/qfilesystemengine_symbian.cpp
+++ b/src/corelib/io/qfilesystemengine_symbian.cpp
@@ -89,14 +89,15 @@ QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link,
 }
 
 //static
-QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry)
+QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
 {
     if (entry.isEmpty() || entry.isRoot())
         return entry;
 
     QFileSystemEntry result = absoluteName(entry);
-    QFileSystemMetaData meta;
-    if (!fillMetaData(result, meta, QFileSystemMetaData::ExistsAttribute) || !meta.exists()) {
+    if (!data.hasFlags(QFileSystemMetaData::ExistsAttribute))
+        fillMetaData(result, data, QFileSystemMetaData::ExistsAttribute);
+    if (!data.exists()) {
         // file doesn't exist
         return QFileSystemEntry();
     } else {
diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp
index fdb881f..6d8b3ff 100644
--- a/src/corelib/io/qfilesystemengine_unix.cpp
+++ b/src/corelib/io/qfilesystemengine_unix.cpp
@@ -193,7 +193,7 @@ QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link,
 }
 
 //static
-QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry)
+QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, , QFileSystemMetaData &data)
 {
     if (entry.isEmpty() || entry.isRoot())
         return entry;
@@ -223,10 +223,14 @@ QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry)
     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;
diff --git a/src/corelib/io/qfilesystemengine_win.cpp b/src/corelib/io/qfilesystemengine_win.cpp
index 550b522..2e9f94b 100644
--- a/src/corelib/io/qfilesystemengine_win.cpp
+++ b/src/corelib/io/qfilesystemengine_win.cpp
@@ -493,7 +493,7 @@ QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link,
 }
 
 //static
-QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry)
+QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
 {
     // The caller has to verify whether the file exists or not.
     return QFileSystemEntry(slowCanonicalized(absoluteName(entry).filePath()));
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index a6cf7fc..418506c 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -923,7 +923,7 @@ QString QFSFileEngine::fileName(FileName file) const
         }
         return entry.filePath();
     } else if (file == CanonicalName || file == CanonicalPathName) {
-        QFileSystemEntry entry(QFileSystemEngine::canonicalName(d->fileEntry));
+        QFileSystemEntry entry(QFileSystemEngine::canonicalName(d->fileEntry, d->metaData));
         if (file == CanonicalPathName)
             return entry.path();
         return entry.filePath();
diff --git a/src/corelib/io/qfsfileengine_win.cpp b/src/corelib/io/qfsfileengine_win.cpp
index 976207a..2bf377a 100644
--- a/src/corelib/io/qfsfileengine_win.cpp
+++ b/src/corelib/io/qfsfileengine_win.cpp
@@ -858,7 +858,7 @@ QString QFSFileEngine::fileName(FileName file) const
     } else if (file == CanonicalName || file == CanonicalPathName) {
         if (!(fileFlags(ExistsFlag) & ExistsFlag))
             return QString();
-        QFileSystemEntry entry(QFileSystemEngine::canonicalName(QFileSystemEntry(fileName(AbsoluteName))));
+        QFileSystemEntry entry(QFileSystemEngine::canonicalName(QFileSystemEntry(fileName(AbsoluteName)), d->metaData));
 
         if (file == CanonicalPathName)
             return entry.path();