1 files changed, 19 insertions, 0 deletions
diff --git a/src/corelib/io/qnoncontiguousbytedevice.cpp b/src/corelib/io/qnoncontiguousbytedevice.cpp
index bf58eee8df..1a0591ea8d 100644
--- a/src/corelib/io/qnoncontiguousbytedevice.cpp
+++ b/src/corelib/io/qnoncontiguousbytedevice.cpp
@@ -245,6 +245,12 @@ qint64 QNonContiguousByteDeviceByteArrayImpl::size()
     return byteArray->size();
 }
 
+qint64 QNonContiguousByteDeviceByteArrayImpl::pos()
+{
+    return currentPosition;
+}
+
+
 QNonContiguousByteDeviceRingBufferImpl::QNonContiguousByteDeviceRingBufferImpl(QSharedPointer<QRingBuffer> rb)
     : QNonContiguousByteDevice(), currentPosition(0)
 {
@@ -296,6 +302,11 @@ qint64 QNonContiguousByteDeviceRingBufferImpl::size()
     return ringBuffer->size();
 }
 
+qint64 QNonContiguousByteDeviceRingBufferImpl::pos()
+{
+    return currentPosition;
+}
+
 QNonContiguousByteDeviceIoDeviceImpl::QNonContiguousByteDeviceIoDeviceImpl(QIODevice *d)
     : QNonContiguousByteDevice(),
     currentReadBuffer(0), currentReadBufferSize(16*1024),
@@ -415,6 +426,14 @@ qint64 QNonContiguousByteDeviceIoDeviceImpl::size()
     return device->size() - initialPosition;
 }
 
+qint64 QNonContiguousByteDeviceIoDeviceImpl::pos()
+{
+    if (device->isSequential())
+        return -1;
+
+    return device->pos();
+}
+
 QByteDeviceWrappingIoDevice::QByteDeviceWrappingIoDevice(QNonContiguousByteDevice *bd) : QIODevice((QObject*)0)
 {
     byteDevice = bd;