Add QFileInfo::readSymLink() to read the raw link path

The existing symLinkTarget() always resolves the symlink target to an
absolute path; readSymLink() provides access to the relative path when
that is how the symlink references its target.

[ChangeLog][QtCore][QFileInfo] Added readSymLink() to read the symlink's
raw target, without resolving to an absolute path.

Fixes: QTBUG-96761
Change-Id: I360e55f1a3bdb00e2966229ea8de78cf29a29417
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp
index daa11ff6b2..f420a0086e 100644
--- a/src/corelib/io/qfilesystemengine_unix.cpp
+++ b/src/corelib/io/qfilesystemengine_unix.cpp
@@ -629,6 +629,16 @@ QFileSystemEntry QFileSystemEngine::getLinkTarget(const QFileSystemEntry &link,
 }
 
 //static
+QFileSystemEntry QFileSystemEngine::getRawLinkPath(const QFileSystemEntry &link,
+                                                   QFileSystemMetaData &data)
+{
+    Q_UNUSED(data)
+    const QByteArray path = qt_readlink(link.nativeFilePath().constData());
+    const QString ret = QFile::decodeName(path);
+    return QFileSystemEntry(ret);
+}
+
+//static
 QFileSystemEntry QFileSystemEngine::canonicalName(const QFileSystemEntry &entry, QFileSystemMetaData &data)
 {
     Q_CHECK_FILE_NAME(entry, entry);