add SvStream::TellEnd

and simplify callsites to use it instead of the current
    "seek to end, find pos, seek back to original pos"
pattern

Change-Id: Ib5828868f73c341891efc759af8bd4695ae2f33c
Reviewed-on: https://gerrit.libreoffice.org/61738
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

84 files changed, 157 insertions, 341 deletions

diff --git a/basic/source/basmgr/basmgr.cxx b/basic/source/basmgr/basmgr.cxx
index c404b7b893c6..3dedac41d42a 100644
--- a/basic/source/basmgr/basmgr.cxx
+++ b/basic/source/basmgr/basmgr.cxx
@@ -654,7 +654,7 @@ void BasicManager::LoadBasicManager( SotStorage& rStorage, const OUString& rBase
     OUString aStorName( rStorage.GetName() );
     // #i13114 removed, DBG_ASSERT( aStorName.Len(), "No Storage Name!" );
 
-    if ( !xManagerStream.is() || xManagerStream->GetError() || ( xManagerStream->Seek( STREAM_SEEK_TO_END ) == 0 ) )
+    if ( !xManagerStream.is() || xManagerStream->GetError() || ( xManagerStream->TellEnd() == 0 ) )
     {
         ImpMgrNotLoaded( aStorName );
         return;
@@ -746,7 +746,7 @@ void BasicManager::LoadOldBasicManager( SotStorage& rStorage )
     OUString aStorName( rStorage.GetName() );
     DBG_ASSERT( aStorName.getLength(), "No Storage Name!" );
 
-    if ( !xManagerStream.is() || xManagerStream->GetError() || ( xManagerStream->Seek( STREAM_SEEK_TO_END ) == 0 ) )
+    if ( !xManagerStream.is() || xManagerStream->GetError() || ( xManagerStream->TellEnd() == 0 ) )
     {
         ImpMgrNotLoaded( aStorName );
         return;
@@ -903,7 +903,7 @@ bool BasicManager::ImpLoadLibrary( BasicLibInfo* pLibInfo, SotStorage* pCurStora
         else
         {
             bool bLoaded = false;
-            if ( xBasicStream->Seek( STREAM_SEEK_TO_END ) != 0 )
+            if ( xBasicStream->TellEnd() != 0 )
             {
                 if ( !pLibInfo->GetLib().is() )
                 {
diff --git a/basic/source/runtime/methods.cxx b/basic/source/runtime/methods.cxx
index 1a17454e6a76..6225cb58e0f8 100644
--- a/basic/source/runtime/methods.cxx
+++ b/basic/source/runtime/methods.cxx
@@ -3217,9 +3217,7 @@ void SbRtl_Lof(StarBASIC *, SbxArray & rPar, bool)
             return;
         }
         SvStream* pSvStrm = pSbStrm->GetStrm();
-        sal_uInt64 const nOldPos = pSvStrm->Tell();
-        sal_uInt64 const nLen = pSvStrm->Seek( STREAM_SEEK_TO_END );
-        pSvStrm->Seek( nOldPos );
+        sal_uInt64 const nLen = pSvStrm->TellEnd();
         rPar.Get(0)->PutLong( static_cast<sal_Int32>(nLen) );
     }
 }
diff --git a/connectivity/source/drivers/dbase/DTable.cxx b/connectivity/source/drivers/dbase/DTable.cxx
index 9d06cb8628d4..858812193b8f 100644
--- a/connectivity/source/drivers/dbase/DTable.cxx
+++ b/connectivity/source/drivers/dbase/DTable.cxx
@@ -528,8 +528,7 @@ void ODbaseTable::construct()
         if (m_pMemoStream)
         {
             // set the buffer exactly to the length of a record
-            m_pMemoStream->Seek(STREAM_SEEK_TO_END);
-            nFileSize = m_pMemoStream->Tell();
+            nFileSize = m_pMemoStream->TellEnd();
             m_pMemoStream->Seek(STREAM_SEEK_TO_BEGIN);
 
             // Buffersize dependent on the file size
@@ -1018,7 +1017,7 @@ bool ODbaseTable::CreateImpl()
             // Only if the file exists with length > 0 raise an error
             std::unique_ptr<SvStream> pFileStream(createStream_simpleError( aURL.GetMainURL(INetURLObject::DecodeMechanism::NONE), StreamMode::READ));
 
-            if (pFileStream && pFileStream->Seek(STREAM_SEEK_TO_END))
+            if (pFileStream && pFileStream->TellEnd())
                 return false;
         }
     }
@@ -2026,7 +2025,7 @@ void ODbaseTable::WriteMemo(const ORowSetValue& aVariable, std::size_t& rBlockNr
 
     if (bAppend)
     {
-        sal_uInt64 const nStreamSize = m_pMemoStream->Seek(STREAM_SEEK_TO_END);
+        sal_uInt64 const nStreamSize = m_pMemoStream->TellEnd();
         // fill last block
         rBlockNr = (nStreamSize / m_aMemoHeader.db_size) + ((nStreamSize % m_aMemoHeader.db_size) > 0 ? 1 : 0);
 
@@ -2090,7 +2089,7 @@ void ODbaseTable::WriteMemo(const ORowSetValue& aVariable, std::size_t& rBlockNr
     // Write the new block number
     if (bAppend)
     {
-        sal_uInt64 const nStreamSize = m_pMemoStream->Seek(STREAM_SEEK_TO_END);
+        sal_uInt64 const nStreamSize = m_pMemoStream->TellEnd();
         m_aMemoHeader.db_next = (nStreamSize / m_aMemoHeader.db_size) + ((nStreamSize % m_aMemoHeader.db_size) > 0 ? 1 : 0);
 
         // Write the new block number
diff --git a/connectivity/source/drivers/dbase/dindexnode.cxx b/connectivity/source/drivers/dbase/dindexnode.cxx
index e7f71d493988..73e262c98bb2 100644
--- a/connectivity/source/drivers/dbase/dindexnode.cxx
+++ b/connectivity/source/drivers/dbase/dindexnode.cxx
@@ -892,7 +892,7 @@ SvStream& connectivity::dbase::WriteONDXPage(SvStream &rStream, const ONDXPage&
     // Page doesn't exist yet
     std::size_t nSize = rPage.GetPagePos() + 1;
     nSize *= DINDEX_PAGE_SIZE;
-    if (nSize > rStream.Seek(STREAM_SEEK_TO_END))
+    if (nSize > rStream.TellEnd())
     {
         rStream.SetStreamSize(nSize);
         rStream.Seek(rPage.GetPagePos() * DINDEX_PAGE_SIZE);
diff --git a/cui/source/dialogs/insdlg.cxx b/cui/source/dialogs/insdlg.cxx
index 14b4fdd3f65f..32facb080e20 100644
--- a/cui/source/dialogs/insdlg.cxx
+++ b/cui/source/dialogs/insdlg.cxx
@@ -311,7 +311,7 @@ short SvInsertOleDlg::execute()
                     Image aImage = SvFileInformationManager::GetImage(aURL, true);
                     SvMemoryStream aTemp;
                     WriteDIBBitmapEx(aImage.GetBitmapEx(), aTemp);
-                    m_aIconMetaFile = Sequence<sal_Int8>(static_cast<const sal_Int8*>(aTemp.GetData()), aTemp.Seek(STREAM_SEEK_TO_END));
+                    m_aIconMetaFile = Sequence<sal_Int8>(static_cast<const sal_Int8*>(aTemp.GetData()), aTemp.TellEnd());
                     m_aIconMediaType = "application/x-openoffice-bitmap;windows_formatname=\"Bitmap\"";
                 }
             }
diff --git a/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx b/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
index 87c688d64082..3d956cfa5c93 100644
--- a/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
+++ b/drawinglayer/source/processor2d/vclmetafileprocessor2d.cxx
@@ -349,7 +349,7 @@ namespace drawinglayer
                 SvMemoryStream aMemStm;
 
                 WriteSvtGraphicFill( aMemStm, *pSvtGraphicFill );
-                mpMetaFile->AddAction(new MetaCommentAction("XPATHFILL_SEQ_BEGIN", 0, static_cast< const sal_uInt8* >(aMemStm.GetData()), aMemStm.Seek(STREAM_SEEK_TO_END)));
+                mpMetaFile->AddAction(new MetaCommentAction("XPATHFILL_SEQ_BEGIN", 0, static_cast< const sal_uInt8* >(aMemStm.GetData()), aMemStm.TellEnd()));
                 mnSvtGraphicFillCount++;
             }
         }
@@ -536,7 +536,7 @@ namespace drawinglayer
                 SvMemoryStream aMemStm;
 
                 WriteSvtGraphicStroke( aMemStm, *pSvtGraphicStroke );
-                mpMetaFile->AddAction(new MetaCommentAction("XPATHSTROKE_SEQ_BEGIN", 0, static_cast< const sal_uInt8* >(aMemStm.GetData()), aMemStm.Seek(STREAM_SEEK_TO_END)));
+                mpMetaFile->AddAction(new MetaCommentAction("XPATHSTROKE_SEQ_BEGIN", 0, static_cast< const sal_uInt8* >(aMemStm.GetData()), aMemStm.TellEnd()));
                 mnSvtGraphicStrokeCount++;
             }
         }
diff --git a/editeng/source/editeng/eeobj.cxx b/editeng/source/editeng/eeobj.cxx
index ddac7cb5731b..3474bdc25be2 100644
--- a/editeng/source/editeng/eeobj.cxx
+++ b/editeng/source/editeng/eeobj.cxx
@@ -55,14 +55,10 @@ uno::Any EditDataObject::getTransferData( const datatransfer::DataFlavor& rFlavo
         // 2) Don't have the old pool defaults and the StyleSheetPool here.
 
         SvMemoryStream* pStream = (nT == SotClipboardFormatId::EDITENGINE_ODF_TEXT_FLAT ) ? &GetODFStream() : &GetRTFStream();
-        pStream->Seek( STREAM_SEEK_TO_END );
-        sal_Int32 nLen = pStream->Tell();
+        sal_Int32 nLen = pStream->TellEnd();
         if (nLen < 0) { abort(); }
-        pStream->Seek(0);
 
-        uno::Sequence< sal_Int8 > aSeq( nLen );
-        memcpy( aSeq.getArray(), pStream->GetData(), nLen );
-        aAny <<= aSeq;
+        aAny <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >(pStream->GetData()), pStream->TellEnd() );
     }
     else
     {
diff --git a/embeddedobj/source/msole/graphconvert.cxx b/embeddedobj/source/msole/graphconvert.cxx
index 7905b786cef0..f5de2b35824d 100644
--- a/embeddedobj/source/msole/graphconvert.cxx
+++ b/embeddedobj/source/msole/graphconvert.cxx
@@ -56,7 +56,7 @@ bool ConvertBufferToFormat( void* pBuf,
         if (rFilter.CanImportGraphic(OUString(), aMemoryStream, GRFILTER_FORMAT_DONTKNOW, &nRetFormat) == ERRCODE_NONE &&
                 rFilter.GetImportFormatMediaType(nRetFormat) == aMimeType)
         {
-            aResult <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemoryStream.GetData() ), aMemoryStream.Seek( STREAM_SEEK_TO_END ) );
+            aResult <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemoryStream.GetData() ), aMemoryStream.TellEnd() );
             return true;
         }
 
@@ -80,7 +80,7 @@ bool ConvertBufferToFormat( void* pBuf,
                 aOutMediaProperties[1].Value <<= aMimeType;
 
                 xGraphicProvider->storeGraphic( xGraphic, aOutMediaProperties );
-                aResult <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aNewStream.GetData() ), aNewStream.Seek( STREAM_SEEK_TO_END ) );
+                aResult <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aNewStream.GetData() ), aNewStream.TellEnd() );
                 return true;
             }
         }
diff --git a/emfio/source/reader/mtftools.cxx b/emfio/source/reader/mtftools.cxx
index 1b76907cd8ff..e5b8aa047d3e 100644
--- a/emfio/source/reader/mtftools.cxx
+++ b/emfio/source/reader/mtftools.cxx
@@ -1333,7 +1333,7 @@ namespace emfio
 
                         mpGDIMetaFile->AddAction( new MetaCommentAction( "XPATHFILL_SEQ_BEGIN", 0,
                                                                 static_cast<const sal_uInt8*>(aMemStm.GetData()),
-                                                                aMemStm.Seek( STREAM_SEEK_TO_END ) ) );
+                                                                aMemStm.TellEnd() ) );
                         mpGDIMetaFile->AddAction( new MetaCommentAction( "XPATHFILL_SEQ_END" ) );
                     }
 
diff --git a/emfio/source/reader/wmfreader.cxx b/emfio/source/reader/wmfreader.cxx
index ec813e645447..875f29a77641 100644
--- a/emfio/source/reader/wmfreader.cxx
+++ b/emfio/source/reader/wmfreader.cxx
@@ -1376,7 +1376,7 @@ namespace emfio
         SetWinExt( Size( 1, 1 ) );
         SetDevExt( Size( 10000, 10000 ) );
 
-        mnEndPos=mpInputStream->Seek( STREAM_SEEK_TO_END );
+        mnEndPos=mpInputStream->TellEnd();
         mpInputStream->Seek( mnStartPos );
 
         if ( ReadHeader( ) )
diff --git a/extensions/source/scanner/sane.cxx b/extensions/source/scanner/sane.cxx
index 824c0cdf6fc1..0c6b50bec05c 100644
--- a/extensions/source/scanner/sane.cxx
+++ b/extensions/source/scanner/sane.cxx
@@ -860,8 +860,7 @@ bool Sane::Start( BitmapTransporter& rBitmap )
             bSuccess = false;
     }
     // get stream length
-    aConverter.Seek( STREAM_SEEK_TO_END );
-    int nPos = aConverter.Tell();
+    int nPos = aConverter.TellEnd();
 
     aConverter.Seek( 2 );
     aConverter.WriteUInt32( nPos+1 );
diff --git a/extensions/source/scanner/scanunx.cxx b/extensions/source/scanner/scanunx.cxx
index 37b7b2999ac2..3225cab44b06 100644
--- a/extensions/source/scanner/scanunx.cxx
+++ b/extensions/source/scanner/scanunx.cxx
@@ -40,21 +40,20 @@ BitmapTransporter::~BitmapTransporter()
 css::awt::Size BitmapTransporter::getSize()
 {
     osl::MutexGuard aGuard( m_aProtector );
-    int         nPreviousPos = m_aStream.Tell();
     css::awt::Size   aRet;
 
     // ensure that there is at least a header
-    m_aStream.Seek( STREAM_SEEK_TO_END );
-    int nLen = m_aStream.Tell();
+    int nLen = m_aStream.TellEnd();
     if( nLen > 15 )
     {
+        int nPreviousPos = m_aStream.Tell();
         m_aStream.Seek( 4 );
         m_aStream.ReadInt32( aRet.Width ).ReadInt32( aRet.Height );
+        m_aStream.Seek( nPreviousPos );
     }
     else
         aRet.Width = aRet.Height = 0;
 
-    m_aStream.Seek( nPreviousPos );
 
     return aRet;
 }
@@ -66,8 +65,7 @@ Sequence< sal_Int8 > BitmapTransporter::getDIB()
     int         nPreviousPos = m_aStream.Tell();
 
     // create return value
-    m_aStream.Seek( STREAM_SEEK_TO_END );
-    int nBytes = m_aStream.Tell();
+    int nBytes = m_aStream.TellEnd();
     m_aStream.Seek( 0 );
 
     Sequence< sal_Int8 > aValue( nBytes );
diff --git a/filter/source/flash/swfwriter.cxx b/filter/source/flash/swfwriter.cxx
index 6e6ea996b82f..fc751f772728 100644
--- a/filter/source/flash/swfwriter.cxx
+++ b/filter/source/flash/swfwriter.cxx
@@ -98,8 +98,7 @@ static void ImplCopySvStreamToXOutputStream( SvStream& rIn, Reference< XOutputSt
 {
     sal_uInt32 nBufferSize = 64*1024;
 
-    rIn.Seek( STREAM_SEEK_TO_END );
-    sal_uInt32 nSize = rIn.Tell();
+    sal_uInt32 nSize = rIn.TellEnd();
     rIn.Seek( STREAM_SEEK_TO_BEGIN );
 
     Sequence< sal_Int8 > aBuffer( std::min( nBufferSize, nSize ) );
diff --git a/filter/source/flash/swfwriter1.cxx b/filter/source/flash/swfwriter1.cxx
index 77af4c859fa6..03042a9c86a2 100644
--- a/filter/source/flash/swfwriter1.cxx
+++ b/filter/source/flash/swfwriter1.cxx
@@ -773,7 +773,7 @@ sal_uInt16 Writer::defineBitmap( const BitmapEx &bmpSource, sal_Int32 nJPEGQuali
                                 aFilter.GetExportFormatNumberForShortName( JPG_SHORTNAME ), &aFilterData ) == ERRCODE_NONE )
     {
         pJpgData = static_cast<const sal_uInt8*>(aDstStm.GetData());
-        nJpgDataLength = aDstStm.Seek( STREAM_SEEK_TO_END );
+        nJpgDataLength = aDstStm.TellEnd();
     }
 
     // AS: Ok, now go ahead and use whichever is smaller.  If JPEG is smaller, then
@@ -998,12 +998,10 @@ void Writer::Impl_writeJPEG(sal_uInt16 nBitmapId, const sal_uInt8* pJpgData, sal
         }
     }
 
-    EncodingTableStream.Seek( STREAM_SEEK_TO_END );
-    sal_uInt32 nEncodingTableSize = EncodingTableStream.Tell();
+    sal_uInt32 nEncodingTableSize = EncodingTableStream.TellEnd();
     EncodingTableStream.Seek( STREAM_SEEK_TO_BEGIN );
 
-    ImageBitsStream.Seek( STREAM_SEEK_TO_END );
-    sal_uInt32 nImageBitsSize = ImageBitsStream.Tell();
+    sal_uInt32 nImageBitsSize = ImageBitsStream.TellEnd();
     ImageBitsStream.Seek( STREAM_SEEK_TO_BEGIN );
 
     // AS: If we need alpha support, use TAG_DEFINEBITSJPEG3.
diff --git a/filter/source/flash/swfwriter2.cxx b/filter/source/flash/swfwriter2.cxx
index 2b7a4bbee717..325cddde4c99 100644
--- a/filter/source/flash/swfwriter2.cxx
+++ b/filter/source/flash/swfwriter2.cxx
@@ -129,8 +129,7 @@ Tag::Tag( sal_uInt8 nTagId )
 
 void Tag::write( SvStream &out )
 {
-    Seek( STREAM_SEEK_TO_END );
-    sal_uInt32 nSz = Tell();
+    sal_uInt32 nSz = TellEnd();
     Seek( STREAM_SEEK_TO_BEGIN );
 
     if( mnTagId != 0xff )
diff --git a/filter/source/graphicfilter/eps/eps.cxx b/filter/source/graphicfilter/eps/eps.cxx
index f3ef15a9d06c..f20e899c0cc6 100644
--- a/filter/source/graphicfilter/eps/eps.cxx
+++ b/filter/source/graphicfilter/eps/eps.cxx
@@ -356,8 +356,7 @@ bool PSWriter::WritePS( const Graphic& rGraphic, SvStream& rTargetStream, Filter
 
         if ( nErrCode == ERRCODE_NONE )
         {
-            rTargetStream.Seek( STREAM_SEEK_TO_END );
-            nPSPosition = rTargetStream.Tell();
+            nPSPosition = rTargetStream.TellEnd();
             rTargetStream.Seek( nStreamPosition + 20 );
             rTargetStream.WriteUInt32( nPSPosition - 30 );  // size of tiff gfx
             rTargetStream.Seek( nPSPosition );
diff --git a/filter/source/msfilter/escherex.cxx b/filter/source/msfilter/escherex.cxx
index 8eea3a8585ea..53f66cea476b 100644
--- a/filter/source/msfilter/escherex.cxx
+++ b/filter/source/msfilter/escherex.cxx
@@ -4226,8 +4226,7 @@ sal_uInt32 EscherGraphicProvider::GetBlibID( SvStream& rPicOutStrm, GraphicObjec
                 if ( nErrCode == ERRCODE_NONE )
                 {
                     p_EscherBlibEntry->meBlibType = ( eGraphicType == GraphicType::Bitmap ) ? PNG : EMF;
-                    aStream.Seek( STREAM_SEEK_TO_END );
-                    p_EscherBlibEntry->mnSize = aStream.Tell();
+                    p_EscherBlibEntry->mnSize = aStream.TellEnd();
                     pGraphicAry = static_cast<sal_uInt8 const *>(aStream.GetData());
                 }
             }
@@ -4293,8 +4292,7 @@ sal_uInt32 EscherGraphicProvider::GetBlibID( SvStream& rPicOutStrm, GraphicObjec
                 SvMemoryStream aDestStrm;
                 aZCodec.Write( aDestStrm, pGraphicAry, p_EscherBlibEntry->mnSize );
                 aZCodec.EndCompression();
-                aDestStrm.Seek( STREAM_SEEK_TO_END );
-                p_EscherBlibEntry->mnSize = aDestStrm.Tell();
+                p_EscherBlibEntry->mnSize = aDestStrm.TellEnd();
                 pGraphicAry = static_cast<sal_uInt8 const *>(aDestStrm.GetData());
                 if ( p_EscherBlibEntry->mnSize && pGraphicAry )
                 {
@@ -4961,8 +4959,7 @@ void EscherEx::InsertAtCurrentPos( sal_uInt32 nBytes )
         if ( offset > nCurPos )
             offset += nBytes;
     }
-    mpOutStrm->Seek( STREAM_SEEK_TO_END );
-    nSource = mpOutStrm->Tell();
+    nSource = mpOutStrm->TellEnd();
     nToCopy = nSource - nCurPos;                        // increase the size of the tream by nBytes
     std::unique_ptr<sal_uInt8[]> pBuf(new sal_uInt8[ 0x40000 ]); // 256KB Buffer
     while ( nToCopy )
diff --git a/filter/source/msfilter/msdffimp.cxx b/filter/source/msfilter/msdffimp.cxx
index b3a54e3c28fa..ef8ab1e9e7d7 100644
--- a/filter/source/msfilter/msdffimp.cxx
+++ b/filter/source/msfilter/msdffimp.cxx
@@ -5915,8 +5915,7 @@ void SvxMSDffManager::GetCtrlData(sal_uInt32 nOffsDggL)
         bool bOk;
         GetDrawingGroupContainerData( rStCtrl, nLength );
 
-        rStCtrl.Seek( STREAM_SEEK_TO_END );
-        sal_uInt32 nMaxStrPos = rStCtrl.Tell();
+        sal_uInt32 nMaxStrPos = rStCtrl.TellEnd();
 
         nPos += nLength;
         sal_uInt16 nDrawingContainerId = 1;
@@ -6531,8 +6530,7 @@ bool SvxMSDffManager::GetBLIPDirect( SvStream& rBLIPStream, Graphic& rData, tool
             {
                 if ( bZCodecCompression )
                 {
-                    xOut->Seek(STREAM_SEEK_TO_END);
-                    pDbgOut->WriteBytes(xOut->GetData(), xOut->Tell());
+                    pDbgOut->WriteBytes(xOut->GetData(), xOut->TellEnd());
                     xOut->Seek(STREAM_SEEK_TO_BEGIN);
                 }
                 else
diff --git a/filter/source/svg/svgfilter.cxx b/filter/source/svg/svgfilter.cxx
index 835e6e69bfd5..07aef15edba3 100644
--- a/filter/source/svg/svgfilter.cxx
+++ b/filter/source/svg/svgfilter.cxx
@@ -582,10 +582,7 @@ private:
             return;
         }
 
-        const sal_uLong nStreamPos(aStream->Tell());
-        aStream->Seek(STREAM_SEEK_TO_END);
-        const sal_uLong nStreamLen(aStream->Tell() - nStreamPos);
-        aStream->Seek(nStreamPos);
+        const sal_uLong nStreamLen(aStream->remainingSize());
 
         if(aStream->GetError())
         {
diff --git a/forms/source/component/DatabaseForm.cxx b/forms/source/component/DatabaseForm.cxx
index 1ae254402117..ee43255d9e2b 100644
--- a/forms/source/component/DatabaseForm.cxx
+++ b/forms/source/component/DatabaseForm.cxx
@@ -507,7 +507,7 @@ Sequence<sal_Int8> ODatabaseForm::GetDataMultiPartEncoded(const Reference<XContr
     aMemStream.Flush();
     aMemStream.Seek( 0 );
     void const * pData = aMemStream.GetData();
-    sal_Int32 nLen = aMemStream.Seek(STREAM_SEEK_TO_END);
+    sal_Int32 nLen = aMemStream.TellEnd();
 
     rContentType = aParent.GetContentType();
     return Sequence<sal_Int8>(static_cast<sal_Int8 const *>(pData), nLen);
diff --git a/include/tools/stream.hxx b/include/tools/stream.hxx
index 3793094155d6..dc2c926c371e 100644
--- a/include/tools/stream.hxx
+++ b/include/tools/stream.hxx
@@ -273,6 +273,7 @@ public:
     sal_uInt64      Seek( sal_uInt64 nPos );
     sal_uInt64      SeekRel( sal_Int64 nPos );
     sal_uInt64      Tell() const { return m_nBufFilePos + m_nBufActualPos;  }
+    sal_uInt64      TellEnd() { return Tell() + remainingSize();  }
     // length between current (Tell()) pos and end of stream
     virtual sal_uInt64 remainingSize();
     void            Flush();
diff --git a/lotuswordpro/source/filter/bencont.cxx b/lotuswordpro/source/filter/bencont.cxx
index cb2f97f9d924..06be40c8a614 100644
--- a/lotuswordpro/source/filter/bencont.cxx
+++ b/lotuswordpro/source/filter/bencont.cxx
@@ -246,16 +246,6 @@ LtcUtBenValueStream * LtcBenContainer::FindValueStreamWithPropertyName(const cha
     return FindNextValueStreamWithPropertyName(sPropertyName);
 }
 
-static sal_uInt64 GetSvStreamSize(SvStream * pStream)
-{
-    sal_uInt64 nCurPos = pStream->Tell();
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 ulLength = pStream->Tell();
-    pStream->Seek(nCurPos);
-
-    return ulLength;
-}
-
 namespace
 {
     void readDataInBlocks(SvStream& rSt, sal_uInt64 nDLen, std::vector<sal_uInt8>& rData)
@@ -303,12 +293,12 @@ std::vector<sal_uInt8> LtcBenContainer::GetGraphicData(const char *pObjectName)
     sal_uInt64 nDLen = 0;
     if (xD)
     {
-        nDLen = GetSvStreamSize(xD.get());
+        nDLen = xD->TellEnd();
     }
     sal_uInt64 nSLen = 0;
     if (xS)
     {
-        nSLen = GetSvStreamSize(xS.get()) ;
+        nSLen = xS->TellEnd();
     }
 
     sal_uInt64 nLen = nDLen + nSLen;
diff --git a/lotuswordpro/source/filter/lwpgrfobj.cxx b/lotuswordpro/source/filter/lwpgrfobj.cxx
index 2fc8d2ee3380..61f35d0879e4 100644
--- a/lotuswordpro/source/filter/lwpgrfobj.cxx
+++ b/lotuswordpro/source/filter/lwpgrfobj.cxx
@@ -384,10 +384,7 @@ sal_uInt32 LwpGraphicObject::GetGrafData(sal_uInt8*& pGrafData)
     if (pMemGrafStream)
     {
         // read image data
-        sal_uInt32 nPos = pGrafStream->Tell();
-        pGrafStream->Seek(STREAM_SEEK_TO_END);
-        sal_uInt32 nDataLen = pGrafStream->Tell();
-        pGrafStream->Seek(nPos);
+        sal_uInt32 nDataLen = pGrafStream->TellEnd();
 
         pGrafData = new sal_uInt8 [nDataLen];
         pMemGrafStream->ReadBytes(pGrafData, nDataLen);
diff --git a/sc/source/filter/excel/xiescher.cxx b/sc/source/filter/excel/xiescher.cxx
index be28c903a7ca..be62186586ee 100644
--- a/sc/source/filter/excel/xiescher.cxx
+++ b/sc/source/filter/excel/xiescher.cxx
@@ -3367,8 +3367,7 @@ void XclImpDffConverter::ProcessDrawing( const XclImpDrawObjVector& rDrawObjs )
 
 void XclImpDffConverter::ProcessDrawing( SvStream& rDffStrm )
 {
-    rDffStrm.Seek( STREAM_SEEK_TO_END );
-    if( rDffStrm.Tell() > 0 )
+    if( rDffStrm.TellEnd() > 0 )
     {
         rDffStrm.Seek( STREAM_SEEK_TO_BEGIN );
         DffRecordHeader aHeader;
diff --git a/sc/source/filter/excel/xistream.cxx b/sc/source/filter/excel/xistream.cxx
index 2bf72262bfcf..790da0a05061 100644
--- a/sc/source/filter/excel/xistream.cxx
+++ b/sc/source/filter/excel/xistream.cxx
@@ -439,8 +439,7 @@ XclImpStream::XclImpStream( SvStream& rInStrm, const XclImpRoot& rRoot ) :
     mbValidRec( false ),
     mbValid( false )
 {
-    mrStrm.Seek( STREAM_SEEK_TO_END );
-    mnStreamSize = mrStrm.Tell();
+    mnStreamSize = mrStrm.TellEnd();
     mrStrm.Seek( STREAM_SEEK_TO_BEGIN );
 }
 
diff --git a/sc/source/filter/ftools/fprogressbar.cxx b/sc/source/filter/ftools/fprogressbar.cxx
index 6278fbdbb979..77bc4cf2a331 100644
--- a/sc/source/filter/ftools/fprogressbar.cxx
+++ b/sc/source/filter/ftools/fprogressbar.cxx
@@ -228,11 +228,7 @@ void ScfStreamProgressBar::Progress()
 
 void ScfStreamProgressBar::Init( SfxObjectShell* pDocShell, const OUString& rText )
 {
-    sal_uInt64 const nPos = mrStrm.Tell();
-    mrStrm.Seek( STREAM_SEEK_TO_END );
-    sal_uInt64 const nSize = mrStrm.Tell();
-    mrStrm.Seek( nPos );
-
+    sal_uInt64 const nSize = mrStrm.TellEnd();
     mxProgress.reset( new ScfSimpleProgressBar( nSize, pDocShell, rText ) );
     Progress();
 }
diff --git a/sc/source/filter/lotus/filter.cxx b/sc/source/filter/lotus/filter.cxx
index 16ab8fe57bf3..a43b4ee6a8ad 100644
--- a/sc/source/filter/lotus/filter.cxx
+++ b/sc/source/filter/lotus/filter.cxx
@@ -76,8 +76,7 @@ generate_Opcodes(LotusContext &rContext, SvStream& aStream,
     }
 
     // #i76299# seems that SvStream::IsEof() does not work correctly
-    aStream.Seek( STREAM_SEEK_TO_END );
-    sal_uInt64 const nStrmSize = aStream.Tell();
+    sal_uInt64 const nStrmSize = aStream.TellEnd();
     aStream.Seek( STREAM_SEEK_TO_BEGIN );
     while (!rContext.bEOF && aStream.good() && (aStream.Tell() < nStrmSize))
     {
diff --git a/sc/source/ui/docshell/impex.cxx b/sc/source/ui/docshell/impex.cxx
index 86e17e3b6e52..72107fdd3363 100644
--- a/sc/source/ui/docshell/impex.cxx
+++ b/sc/source/ui/docshell/impex.cxx
@@ -289,7 +289,7 @@ bool ScImportExport::ExportData( const OUString& rMimeType,
         aStrm.WriteUChar( 0 );
         rValue <<= css::uno::Sequence< sal_Int8 >(
                                         static_cast<sal_Int8 const *>(aStrm.GetData()),
-                                        aStrm.Seek( STREAM_SEEK_TO_END ) );
+                                        aStrm.TellEnd() );
         return true;
     }
     return false;
@@ -339,8 +339,6 @@ bool ScImportExport::ExportString( OUString& rText, SotClipboardFormatId nFmt )
     if( ExportStream( aStrm, OUString(), nFmt ) )
     {
         aStrm.WriteUInt16( 0 );
-        aStrm.Seek( STREAM_SEEK_TO_END );
-
         rText = OUString( static_cast<const sal_Unicode*>(aStrm.GetData()) );
         return true;
     }
@@ -366,8 +364,7 @@ bool ScImportExport::ExportByteString( OString& rText, rtl_TextEncoding eEnc, So
     if( ExportStream( aStrm, OUString(), nFmt ) )
     {
         aStrm.WriteChar( 0 );
-        aStrm.Seek( STREAM_SEEK_TO_END );
-        if( aStrm.Tell() <= nSizeLimit )
+        if( aStrm.TellEnd() <= nSizeLimit )
         {
             rText = static_cast<const sal_Char*>(aStrm.GetData());
             return true;
diff --git a/sc/source/ui/unoobj/confuno.cxx b/sc/source/ui/unoobj/confuno.cxx
index a7d6599aef6c..676ed2814ffc 100644
--- a/sc/source/ui/unoobj/confuno.cxx
+++ b/sc/source/ui/unoobj/confuno.cxx
@@ -503,12 +503,8 @@ uno::Any SAL_CALL ScDocumentConfiguration::getPropertyValue( const OUString& aPr
         {
             SvMemoryStream aStream;
             pPrinter->Store( aStream );
-            aStream.Seek ( STREAM_SEEK_TO_END );
-            sal_uInt32 nSize = aStream.Tell();
-            aStream.Seek ( STREAM_SEEK_TO_BEGIN );
-            uno::Sequence < sal_Int8 > aSequence( nSize );
-            aStream.ReadBytes(aSequence.getArray(), nSize);
-            aRet <<= aSequence;
+            aRet <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aStream.GetData() ),
+                                                        aStream.TellEnd() );
         }
         else
             aRet <<= uno::Sequence<sal_Int8>();
diff --git a/sc/source/ui/unoobj/exceldetect.cxx b/sc/source/ui/unoobj/exceldetect.cxx
index 6d5ccd796ab6..9ab0890c977e 100644
--- a/sc/source/ui/unoobj/exceldetect.cxx
+++ b/sc/source/ui/unoobj/exceldetect.cxx
@@ -56,8 +56,7 @@ bool hasStream(const uno::Reference<io::XInputStream>& xInStream, const OUString
     if (!pStream)
         return false;
 
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 const nSize = pStream->Tell();
+    sal_uInt64 const nSize = pStream->TellEnd();
     pStream->Seek(0);
 
     if (!nSize)
@@ -94,8 +93,7 @@ bool isExcel40(const uno::Reference<io::XInputStream>& xInStream)
     if (!pStream)
         return false;
 
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 const nSize = pStream->Tell();
+    sal_uInt64 const nSize = pStream->TellEnd();
     pStream->Seek(0);
 
     if (nSize < 4)
diff --git a/sc/source/ui/unoobj/scdetect.cxx b/sc/source/ui/unoobj/scdetect.cxx
index 251fda4e1549..23071a09ea7f 100644
--- a/sc/source/ui/unoobj/scdetect.cxx
+++ b/sc/source/ui/unoobj/scdetect.cxx
@@ -208,8 +208,7 @@ static bool lcl_MayBeDBase( SvStream& rStream )
     // Empty dbf is >= 32*2+1 bytes in size.
     const size_t nEmptyDbf = nHeaderBlockSize * 2 + 1;
 
-    rStream.Seek(STREAM_SEEK_TO_END);
-    sal_uLong nSize = rStream.Tell();
+    sal_uLong nSize = rStream.TellEnd();
     if ( nSize < nEmptyDbf )
         return false;
 
diff --git a/sd/source/filter/eppt/eppt.cxx b/sd/source/filter/eppt/eppt.cxx
index 230797458c05..ca8ee466efae 100644
--- a/sd/source/filter/eppt/eppt.cxx
+++ b/sd/source/filter/eppt/eppt.cxx
@@ -1232,8 +1232,7 @@ void PPTWriter::ImplWriteVBA()
 {
     if ( mpVBA )
     {
-        mpVBA->Seek( STREAM_SEEK_TO_END );
-        sal_uInt32 nLen = mpVBA->Tell();
+        sal_uInt32 nLen = mpVBA->TellEnd();
         if ( nLen > 8 )
         {
             nLen -= 8;
diff --git a/sd/source/filter/eppt/epptso.cxx b/sd/source/filter/eppt/epptso.cxx
index f5df6e331b8a..bcda24246ef6 100644
--- a/sd/source/filter/eppt/epptso.cxx
+++ b/sd/source/filter/eppt/epptso.cxx
@@ -432,8 +432,7 @@ bool PPTWriter::ImplCloseDocument()
             }
         }
 
-        mpExEmbed->Seek( STREAM_SEEK_TO_END );
-        sal_uInt32 nExEmbedSize = mpExEmbed->Tell();
+        sal_uInt32 nExEmbedSize = mpExEmbed->TellEnd();
 
         // nEnvironment : whole size of the environment container
         sal_uInt32 nEnvironment = maFontCollection.GetCount() * 76      // 68 bytes per Fontenityatom and 8 Bytes per header
diff --git a/sd/source/filter/eppt/escherex.cxx b/sd/source/filter/eppt/escherex.cxx
index d0894bd02216..f0929c10da1d 100644
--- a/sd/source/filter/eppt/escherex.cxx
+++ b/sd/source/filter/eppt/escherex.cxx
@@ -249,8 +249,7 @@ sal_uInt32 PptEscherEx::EnterGroup( ::tools::Rectangle const * pBoundRect, SvMem
         }
         if ( pClientData )
         {
-            pClientData->Seek( STREAM_SEEK_TO_END );
-            sal_uInt32 nSize = pClientData->Tell();
+            sal_uInt32 nSize = pClientData->TellEnd();
             if ( nSize )
             {
                 mpOutStrm->WriteUInt32( ( ESCHER_ClientData << 16 ) | 0xf )
diff --git a/sd/source/filter/ppt/pptatom.cxx b/sd/source/filter/ppt/pptatom.cxx
index 1a6bd6957305..90e61e738ffb 100644
--- a/sd/source/filter/ppt/pptatom.cxx
+++ b/sd/source/filter/ppt/pptatom.cxx
@@ -37,10 +37,7 @@ Atom::Atom( const DffRecordHeader& rRecordHeader, SvStream& rStream )
             Atom* pLastAtom = nullptr;
 
             // retrieve file size (to allow sanity checks)
-            sal_uInt64 const nStreamPos = mrStream.Tell();
-            mrStream.Seek( STREAM_SEEK_TO_END );
-            sal_uInt64 const nStreamSize = mrStream.Tell();
-            mrStream.Seek( nStreamPos );
+            sal_uInt64 const nStreamSize = mrStream.TellEnd();
 
             while( (mrStream.GetError() == ERRCODE_NONE )
                 && ( mrStream.Tell() < nStreamSize )
diff --git a/sd/source/filter/ppt/propread.cxx b/sd/source/filter/ppt/propread.cxx
index 4c1248b08234..112d8a0befe8 100644
--- a/sd/source/filter/ppt/propread.cxx
+++ b/sd/source/filter/ppt/propread.cxx
@@ -195,10 +195,7 @@ PropItem& PropItem::operator=( PropItem& rPropItem )
         delete[] static_cast<sal_uInt8*>(SwitchBuffer());
 
         mnTextEnc = rPropItem.mnTextEnc;
-        sal_uInt32 nItemPos = rPropItem.Tell();
-        rPropItem.Seek( STREAM_SEEK_TO_END );
-        SvMemoryStream::WriteBytes(rPropItem.GetData(), rPropItem.Tell());
-        rPropItem.Seek( nItemPos );
+        SvMemoryStream::WriteBytes(rPropItem.GetData(), rPropItem.TellEnd());
     }
     return *this;
 }
diff --git a/sd/source/ui/app/sdxfer.cxx b/sd/source/ui/app/sdxfer.cxx
index 90d651c257b5..2a7dadaf9118 100644
--- a/sd/source/ui/app/sdxfer.cxx
+++ b/sd/source/ui/app/sdxfer.cxx
@@ -827,7 +827,7 @@ bool SdTransferable::SetTableRTF( SdDrawDocument* pModel )
             {
                 SvMemoryStream aMemStm( 65535, 65535 );
                 sdr::table::SdrTableObj::ExportAsRTF( aMemStm, *pTableObj );
-                return SetAny( Any( Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) ) ) );
+                return SetAny( Any( Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.TellEnd() ) ) );
             }
         }
     }
diff --git a/sd/source/ui/unoidl/UnoDocumentSettings.cxx b/sd/source/ui/unoidl/UnoDocumentSettings.cxx
index 5eec0ffda4c3..dbb565de0ec9 100644
--- a/sd/source/ui/unoidl/UnoDocumentSettings.cxx
+++ b/sd/source/ui/unoidl/UnoDocumentSettings.cxx
@@ -1199,12 +1199,8 @@ DocumentSettings::_getPropertyValues(
                     {
                         SvMemoryStream aStream;
                         pTempPrinter->Store( aStream );
-                        aStream.Seek ( STREAM_SEEK_TO_END );
-                        sal_uInt32 nSize = aStream.Tell();
-                        aStream.Seek ( STREAM_SEEK_TO_BEGIN );
-                        Sequence < sal_Int8 > aSequence ( nSize );
-                        memcpy ( aSequence.getArray(), aStream.GetData(), nSize );
-                        *pValue <<= aSequence;
+                        *pValue <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aStream.GetData() ),
+                                                        aStream.TellEnd() );
                     }
                     else
                     {
diff --git a/sfx2/source/bastyp/sfxhtml.cxx b/sfx2/source/bastyp/sfxhtml.cxx
index 82b81e93b45d..e6b94f77bd71 100644
--- a/sfx2/source/bastyp/sfxhtml.cxx
+++ b/sfx2/source/bastyp/sfxhtml.cxx
@@ -242,11 +242,9 @@ bool SfxHTMLParser::FinishFileDownload( OUString& rStr )
         if( pStream )
             aStream.WriteStream( *pStream );
 
-        aStream.Seek( STREAM_SEEK_TO_END );
-        sal_uInt64 const nLen = aStream.Tell();
+        sal_uInt64 const nLen = aStream.TellEnd();
         aStream.Seek( 0 );
-        OString sBuffer = read_uInt8s_ToOString(aStream, nLen);
-        rStr = OStringToOUString( sBuffer, RTL_TEXTENCODING_UTF8 );
+        rStr = read_uInt8s_ToOUString(aStream, nLen, RTL_TEXTENCODING_UTF8);
     }
 
     pDLMedium.reset();
diff --git a/sfx2/source/doc/docinf.cxx b/sfx2/source/doc/docinf.cxx
index 37c20eaf0ebb..fa6595631acc 100644
--- a/sfx2/source/doc/docinf.cxx
+++ b/sfx2/source/doc/docinf.cxx
@@ -313,14 +313,7 @@ uno::Sequence<sal_Int8> convertMetaFile(GDIMetaFile const * i_pThumb)
         if (i_pThumb->CreateThumbnail(aBitmap))
         {
             WriteDIB(aBitmap.GetBitmap(), aStream, false, false);
-            aStream.Seek(STREAM_SEEK_TO_END);
-            uno::Sequence<sal_Int8> aSeq(aStream.Tell());
-            const sal_Int8* pBlob(
-                static_cast<const sal_Int8*>(aStream.GetData()));
-            for (sal_Int32 j = 0; j < aSeq.getLength(); ++j) {
-                aSeq[j] = pBlob[j];
-            }
-            return aSeq;
+            return uno::Sequence<sal_Int8>(static_cast< const sal_Int8* >( aStream.GetData() ), aStream.TellEnd());
         }
     }
     return uno::Sequence<sal_Int8>();
diff --git a/sfx2/source/doc/graphhelp.cxx b/sfx2/source/doc/graphhelp.cxx
index c2bd23e05a76..e15df3ed4c9c 100644
--- a/sfx2/source/doc/graphhelp.cxx
+++ b/sfx2/source/doc/graphhelp.cxx
@@ -121,7 +121,7 @@ void* GraphicHelper::getWinMetaFileFromGDI_Impl( const GDIMetaFile* pGDIMeta, co
         pStream.Flush();
         if ( !nFailed )
         {
-            sal_Int32 nLength = pStream.Seek( STREAM_SEEK_TO_END );
+            sal_Int32 nLength = pStream.TellEnd();
             if ( nLength > 22 )
             {
                 HMETAFILE hMeta = SetMetaFileBitsEx( nLength - 22,
diff --git a/sfx2/source/doc/sfxbasemodel.cxx b/sfx2/source/doc/sfxbasemodel.cxx
index d1629aff7e8d..e29eb13f37e1 100644
--- a/sfx2/source/doc/sfxbasemodel.cxx
+++ b/sfx2/source/doc/sfxbasemodel.cxx
@@ -1919,9 +1919,8 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
                 aTmp.EnableKillingFile();
                 storeToURL( aTmp.GetURL(), Sequence < beans::PropertyValue >() );
                 SvStream* pStream = aTmp.GetStream( StreamMode::READ );
-                const sal_uInt32 nLen = pStream->Seek( STREAM_SEEK_TO_END );
+                const sal_uInt32 nLen = pStream->TellEnd();
                 Sequence< sal_Int8 > aSeq( nLen );
-                pStream->Seek( STREAM_SEEK_TO_BEGIN );
                 pStream->ReadBytes(aSeq.getArray(), nLen);
                 delete pStream;
                 if( aSeq.getLength() )
@@ -1947,7 +1946,7 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
 
                 xMetaFile->Write( aMemStm );
                 aAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ),
-                                                aMemStm.Seek( STREAM_SEEK_TO_END ) );
+                                                aMemStm.TellEnd() );
             }
         }
         else if ( aFlavor.MimeType == "application/x-openoffice-highcontrast-gdimetafile;windows_formatname=\"GDIMetaFile\"" )
@@ -1965,7 +1964,7 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
 
                 xMetaFile->Write( aMemStm );
                 aAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ),
-                                                aMemStm.Seek( STREAM_SEEK_TO_END ) );
+                                                aMemStm.TellEnd() );
             }
         }
         else if ( aFlavor.MimeType == "application/x-openoffice-emf;windows_formatname=\"Image EMF\"" )
@@ -1984,7 +1983,7 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
                     {
                         xStream->SetVersion( SOFFICE_FILEFORMAT_CURRENT );
                         aAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( xStream->GetData() ),
-                                                        xStream->Seek( STREAM_SEEK_TO_END ) );
+                                                        xStream->TellEnd() );
                     }
                 }
             }
@@ -2020,7 +2019,7 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
                     {
                         xStream->SetVersion( SOFFICE_FILEFORMAT_CURRENT );
                         aAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( xStream->GetData() ),
-                                                        xStream->Seek( STREAM_SEEK_TO_END ) );
+                                                        xStream->TellEnd() );
                     }
                 }
             }
@@ -2061,7 +2060,7 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
                 {
                     xStream->SetVersion( SOFFICE_FILEFORMAT_CURRENT );
                     aAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( xStream->GetData() ),
-                                                    xStream->Seek( STREAM_SEEK_TO_END ) );
+                                                    xStream->TellEnd() );
                 }
             }
         }
@@ -2083,7 +2082,7 @@ Any SAL_CALL SfxBaseModel::getTransferData( const datatransfer::DataFlavor& aFla
                 {
                     xStream->SetVersion( SOFFICE_FILEFORMAT_CURRENT );
                     aAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( xStream->GetData() ),
-                                                    xStream->Seek( STREAM_SEEK_TO_END ) );
+                                                    xStream->TellEnd() );
                 }
             }
         }
diff --git a/sot/source/sdstor/stg.cxx b/sot/source/sdstor/stg.cxx
index bb74237bff5a..60147cd319ee 100644
--- a/sot/source/sdstor/stg.cxx
+++ b/sot/source/sdstor/stg.cxx
@@ -374,7 +374,7 @@ Storage::Storage( SvStream& r, bool bDirect )
     if( r.GetError() == ERRCODE_NONE )
     {
         pIo->SetStrm( &r, false );
-        sal_uInt64 nSize = r.Seek( STREAM_SEEK_TO_END );
+        sal_uInt64 nSize = r.TellEnd();
         r.Seek( 0 );
         // Initializing is OK if the stream is empty
         Init( nSize == 0 );
@@ -419,7 +419,7 @@ Storage::Storage( UCBStorageStream& rStrm, bool bDirect )
 
     pIo->SetStrm( &rStrm );
 
-    sal_uInt64 nSize = pStream->Seek( STREAM_SEEK_TO_END );
+    sal_uInt64 nSize = pStream->TellEnd();
     pStream->Seek( 0 );
     // Initializing is OK if the stream is empty
     Init( nSize == 0 );
@@ -444,7 +444,7 @@ void Storage::Init( bool bCreate )
     OSL_ENSURE( pIo, "The pointer may not be empty at this point!" );
     if( pIo->Good() && pIo->GetStrm() )
     {
-        sal_uInt64 nSize = pIo->GetStrm()->Seek( STREAM_SEEK_TO_END );
+        sal_uInt64 nSize = pIo->GetStrm()->TellEnd();
         pIo->GetStrm()->Seek( 0 );
         if( nSize )
         {
diff --git a/sot/source/sdstor/stgcache.cxx b/sot/source/sdstor/stgcache.cxx
index e21ac2335af0..532b74e3d501 100644
--- a/sot/source/sdstor/stgcache.cxx
+++ b/sot/source/sdstor/stgcache.cxx
@@ -111,10 +111,8 @@ void StgCache::SetPhysPageSize( short n )
     if ( n >= 512 )
     {
         m_nPageSize = n;
-        sal_uInt64 nPos = m_pStrm->Tell();
-        sal_uInt64 nFileSize = m_pStrm->Seek( STREAM_SEEK_TO_END );
+        sal_uInt64 nFileSize = m_pStrm->TellEnd();
         m_nPages = lcl_GetPageCount( nFileSize, m_nPageSize );
-        m_pStrm->Seek( nPos );
     }
 }
 
@@ -295,7 +293,7 @@ bool StgCache::Open( const OUString& rName, StreamMode nMode )
     SetStrm( pFileStrm, true );
     if( pFileStrm->IsOpen() )
     {
-        sal_uInt64 nFileSize = m_pStrm->Seek( STREAM_SEEK_TO_END );
+        sal_uInt64 nFileSize = m_pStrm->TellEnd();
         m_nPages = lcl_GetPageCount( nFileSize, m_nPageSize );
         m_pStrm->Seek( 0 );
     }
diff --git a/sot/source/sdstor/stgdir.cxx b/sot/source/sdstor/stgdir.cxx
index 4fcb13b85ac8..da729a9031ef 100644
--- a/sot/source/sdstor/stgdir.cxx
+++ b/sot/source/sdstor/stgdir.cxx
@@ -738,9 +738,7 @@ void StgDirStrm::SetupEntry( sal_Int32 n, StgDirEntry* pUpper )
     if( p )
     {
         SvStream *pUnderlyingStream = m_rIo.GetStrm();
-        sal_uInt64 nCur = pUnderlyingStream->Tell();
-        sal_uInt64 nUnderlyingStreamSize = pUnderlyingStream->Seek(STREAM_SEEK_TO_END);
-        pUnderlyingStream->Seek(nCur);
+        sal_uInt64 nUnderlyingStreamSize = pUnderlyingStream->TellEnd();
 
         bool bOk(false);
         StgDirEntry* pCur = new StgDirEntry( p, STGENTRY_SIZE, nUnderlyingStreamSize, &bOk );
diff --git a/sot/source/sdstor/stgstrms.cxx b/sot/source/sdstor/stgstrms.cxx
index ae140fdb128a..35d99f27751f 100644
--- a/sot/source/sdstor/stgstrms.cxx
+++ b/sot/source/sdstor/stgstrms.cxx
@@ -1212,9 +1212,7 @@ sal_uInt64 StgTmpStrm::GetSize() const
     sal_uInt64 n;
     if( m_pStrm )
     {
-        sal_uInt64 old = m_pStrm->Tell();
-        n = m_pStrm->Seek( STREAM_SEEK_TO_END );
-        m_pStrm->Seek( old );
+        n = m_pStrm->TellEnd();
     }
     else
         n = nEndOfData;
diff --git a/sot/source/sdstor/storage.cxx b/sot/source/sdstor/storage.cxx
index cb484cca4215..829dd82cb4c8 100644
--- a/sot/source/sdstor/storage.cxx
+++ b/sot/source/sdstor/storage.cxx
@@ -177,10 +177,7 @@ void SotStorageStream::SetSize(sal_uInt64 const nNewSize)
 
 sal_uInt32 SotStorageStream::GetSize() const
 {
-    sal_uInt64 nPos = Tell();
-    const_cast<SotStorageStream *>(this)->Seek( STREAM_SEEK_TO_END );
-    sal_uInt64 nSize = Tell();
-    const_cast<SotStorageStream *>(this)->Seek( nPos );
+    sal_uInt64 nSize = const_cast<SotStorageStream*>(this)->TellEnd();
     return nSize;
 }
 
diff --git a/sot/source/sdstor/ucbstorage.cxx b/sot/source/sdstor/ucbstorage.cxx
index c5c8c13fb088..05027ed580b2 100644
--- a/sot/source/sdstor/ucbstorage.cxx
+++ b/sot/source/sdstor/ucbstorage.cxx
@@ -262,16 +262,11 @@ sal_Int64 SAL_CALL FileStreamWrapper_Impl::getLength(  )
     ::osl::MutexGuard aGuard( m_aMutex );
     checkConnected();
 
-    sal_uInt32 nCurrentPos = m_pSvStream->Tell();
     checkError();
 
-    m_pSvStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nEndPos = m_pSvStream->Tell();
-    m_pSvStream->Seek(nCurrentPos);
+    sal_Int64 nEndPos = m_pSvStream->TellEnd();
 
-    checkError();
-
-    return static_cast<sal_Int64>(nEndPos);
+    return nEndPos;
 }
 
 
@@ -2875,8 +2870,7 @@ bool UCBStorage::IsStorageFile( SvStream* pFile )
         return false;
 
     sal_uInt64 nPos = pFile->Tell();
-    pFile->Seek( STREAM_SEEK_TO_END );
-    if ( pFile->Tell() < 4 )
+    if ( pFile->TellEnd() < 4 )
         return false;
 
     pFile->Seek(0);
@@ -2905,8 +2899,7 @@ OUString UCBStorage::GetLinkedFile( SvStream &rStream )
 {
     OUString aString;
     sal_uInt64 nPos = rStream.Tell();
-    rStream.Seek( STREAM_SEEK_TO_END );
-    if ( !rStream.Tell() )
+    if ( !rStream.TellEnd() )
         return aString;
 
     rStream.Seek(0);
diff --git a/starmath/source/unomodel.cxx b/starmath/source/unomodel.cxx
index e58f9d80b04d..b7ff3bd2206f 100644
--- a/starmath/source/unomodel.cxx
+++ b/starmath/source/unomodel.cxx
@@ -813,8 +813,7 @@ void SmModel::_getPropertyValues( const PropertyMapEntry **ppEntries, Any *pValu
                 {
                     SvMemoryStream aStream;
                     pPrinter->Store( aStream );
-                    aStream.Seek ( STREAM_SEEK_TO_END );
-                    sal_uInt32 nSize = aStream.Tell();
+                    sal_uInt32 nSize = aStream.TellEnd();
                     aStream.Seek ( STREAM_SEEK_TO_BEGIN );
                     Sequence < sal_Int8 > aSequence ( nSize );
                     aStream.ReadBytes(aSequence.getArray(), nSize);
diff --git a/svtools/source/misc/embedtransfer.cxx b/svtools/source/misc/embedtransfer.cxx
index 29e894c56bd1..a408c03771d6 100644
--- a/svtools/source/misc/embedtransfer.cxx
+++ b/svtools/source/misc/embedtransfer.cxx
@@ -127,7 +127,7 @@ bool SvEmbedTransferHelper::GetData( const css::datatransfer::DataFlavor& rFlavo
                                 xStg->openStorageElement( aName, embed::ElementModes::READ )->copyToStorage( xStor );
                             }
 
-                            const sal_uInt32               nLen = pStream->Seek( STREAM_SEEK_TO_END );
+                            const sal_uInt32               nLen = pStream->TellEnd();
                             css::uno::Sequence< sal_Int8 > aSeq( nLen );
 
                             pStream->Seek( STREAM_SEEK_TO_BEGIN );
@@ -159,7 +159,7 @@ bool SvEmbedTransferHelper::GetData( const css::datatransfer::DataFlavor& rFlavo
                     const_cast<GDIMetaFile*>(&aMetaFile)->Write( aMemStm );
                     uno::Any aAny;
                     aAny <<= uno::Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ),
-                                                    aMemStm.Seek( STREAM_SEEK_TO_END ) );
+                                                    aMemStm.TellEnd() );
                     SetAny( aAny );
                     bRet = true;
                 }
diff --git a/svtools/source/misc/transfer.cxx b/svtools/source/misc/transfer.cxx
index 5600107f8eb4..206c75ba48b9 100644
--- a/svtools/source/misc/transfer.cxx
+++ b/svtools/source/misc/transfer.cxx
@@ -332,7 +332,7 @@ Any SAL_CALL TransferableHelper::getTransferData2( const DataFlavor& rFlavor, co
                         if( GraphicConverter::Export( aDstStm, aGraphic, ConvertDataFormat::EMF ) == ERRCODE_NONE )
                         {
                             maAny <<= ( aSeq = Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aDstStm.GetData() ),
-                                                                     aDstStm.Seek( STREAM_SEEK_TO_END ) ) );
+                                                                     aDstStm.TellEnd() ) );
                             bDone = true;
                         }
                     }
@@ -362,7 +362,7 @@ Any SAL_CALL TransferableHelper::getTransferData2( const DataFlavor& rFlavor, co
                         if ( ConvertGDIMetaFileToWMF( aMtf, aDstStm, nullptr, false ) )
                         {
                             maAny <<= ( aSeq = Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aDstStm.GetData() ),
-                                                                     aDstStm.Seek( STREAM_SEEK_TO_END ) ) );
+                                                                     aDstStm.TellEnd() ) );
                             bDone = true;
                         }
                     }
@@ -676,7 +676,7 @@ bool TransferableHelper::SetBitmapEx( const BitmapEx& rBitmapEx, const DataFlavo
             WriteDIB(aBitmap, aMemStm, false, true);
         }
 
-        maAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );
+        maAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.TellEnd() );
     }
 
     return maAny.hasValue();
@@ -690,7 +690,7 @@ bool TransferableHelper::SetGDIMetaFile( const GDIMetaFile& rMtf )
         SvMemoryStream aMemStm( 65535, 65535 );
 
         const_cast<GDIMetaFile&>(rMtf).Write( aMemStm );
-        maAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );
+        maAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.TellEnd() );
     }
 
     return maAny.hasValue();
@@ -849,7 +849,7 @@ bool TransferableHelper::SetObject( void* pUserObject, sal_uInt32 nUserObjectId,
 
     if( pUserObject && WriteObject( xStm, pUserObject, nUserObjectId, rFlavor ) )
     {
-        const sal_uInt32        nLen = xStm->Seek( STREAM_SEEK_TO_END );
+        const sal_uInt32        nLen = xStm->TellEnd();
         Sequence< sal_Int8 >    aSeq( nLen );
 
         xStm->Seek( STREAM_SEEK_TO_BEGIN );
diff --git a/svx/qa/unit/xoutdev.cxx b/svx/qa/unit/xoutdev.cxx
index c2f48fbbc5c6..90186df8e831 100644
--- a/svx/qa/unit/xoutdev.cxx
+++ b/svx/qa/unit/xoutdev.cxx
@@ -57,9 +57,7 @@ void XOutdevTest::testPdfGraphicExport()
 
     // Assert that the output looks like a PDF.
     SvStream* pStream = aTempFile.GetStream(StreamMode::READ);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    CPPUNIT_ASSERT(pStream->Tell() > 5);
-    pStream->Seek(STREAM_SEEK_TO_BEGIN);
+    CPPUNIT_ASSERT(pStream->TellEnd() > 5);
     sal_uInt8 sFirstBytes[5];
     pStream->ReadBytes(sFirstBytes, 5);
     CPPUNIT_ASSERT_EQUAL(static_cast<sal_uInt8>('%'), sFirstBytes[0]);
diff --git a/svx/source/dialog/compressgraphicdialog.cxx b/svx/source/dialog/compressgraphicdialog.cxx
index 3c68d0f1d5b1..8a39d7cf5635 100644
--- a/svx/source/dialog/compressgraphicdialog.cxx
+++ b/svx/source/dialog/compressgraphicdialog.cxx
@@ -191,8 +191,7 @@ void CompressGraphicsDialog::Update()
     SvMemoryStream aMemStream;
     aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT );
     m_aGraphic.ExportNative(aMemStream);
-    aMemStream.Seek( STREAM_SEEK_TO_END );
-    sal_Int32 aNativeSize = aMemStream.Tell();
+    sal_Int32 aNativeSize = aMemStream.TellEnd();
 
     OUString aNativeSizeString = SvxResId(STR_IMAGE_CAPACITY);
     aNativeSizeString = aNativeSizeString.replaceAll("$(CAPACITY)",  OUString::number(aNativeSize / 1024));
@@ -353,8 +352,7 @@ IMPL_LINK_NOARG( CompressGraphicsDialog, CalculateClickHdl, weld::Button&, void
         SvMemoryStream aMemStream;
         aMemStream.SetVersion( SOFFICE_FILEFORMAT_CURRENT );
         Compress( aMemStream );
-        aMemStream.Seek( STREAM_SEEK_TO_END );
-        aSize = aMemStream.Tell();
+        aSize = aMemStream.TellEnd();
     }
 
     if ( aSize > 0 )
diff --git a/svx/source/gallery2/codec.cxx b/svx/source/gallery2/codec.cxx
index 0149b4de5e97..773b769a2678 100644
--- a/svx/source/gallery2/codec.cxx
+++ b/svx/source/gallery2/codec.cxx
@@ -61,8 +61,7 @@ void GalleryCodec::Write( SvStream& rStmToWrite )
 {
     sal_uInt32 nPos, nCompSize;
 
-    rStmToWrite.Seek( STREAM_SEEK_TO_END );
-    const sal_uInt32 nSize = rStmToWrite.Tell();
+    const sal_uInt32 nSize = rStmToWrite.TellEnd();
     rStmToWrite.Seek( 0 );
 
     rStm.WriteChar( 'S' ).WriteChar( 'V' ).WriteChar( 'R' ).WriteChar( 'L' ).WriteChar( 'E' ).WriteChar( '2' );
diff --git a/svx/source/xml/xmlgrhlp.cxx b/svx/source/xml/xmlgrhlp.cxx
index cb6eb4d80e3a..b45954fdbd0d 100644
--- a/svx/source/xml/xmlgrhlp.cxx
+++ b/svx/source/xml/xmlgrhlp.cxx
@@ -306,8 +306,7 @@ Graphic SvXMLGraphicOutputStream::GetGraphic()
 
             sal_uInt8    sFirstBytes[ 2 ];
 
-            mpOStm->Seek( STREAM_SEEK_TO_END );
-            sal_uIntPtr nStreamLen = mpOStm->Tell();
+            sal_uIntPtr nStreamLen = mpOStm->TellEnd();
             mpOStm->Seek( 0 );
 
             if ( !nStreamLen )
@@ -316,8 +315,7 @@ Graphic SvXMLGraphicOutputStream::GetGraphic()
                 if ( pLockBytes  )
                     pLockBytes->SetSynchronMode();
 
-                mpOStm->Seek( STREAM_SEEK_TO_END );
-                nStreamLen = mpOStm->Tell();
+                nStreamLen = mpOStm->TellEnd();
                 mpOStm->Seek( 0 );
             }
             if( nStreamLen >= 2 )
@@ -335,8 +333,7 @@ Graphic SvXMLGraphicOutputStream::GetGraphic()
 
                     if (aZCodec.EndCompression() && pDest )
                     {
-                        pDest->Seek( STREAM_SEEK_TO_END );
-                        sal_uIntPtr nStreamLen_ = pDest->Tell();
+                        sal_uIntPtr nStreamLen_ = pDest->TellEnd();
                         if (nStreamLen_)
                         {
                             pDest->Seek(0);
diff --git a/svx/source/xoutdev/_xoutbmp.cxx b/svx/source/xoutdev/_xoutbmp.cxx
index 718b73e3f412..640d7bb356f0 100644
--- a/svx/source/xoutdev/_xoutbmp.cxx
+++ b/svx/source/xoutdev/_xoutbmp.cxx
@@ -380,8 +380,7 @@ bool XOutBitmap::GraphicToBase64(const Graphic& rGraphic, OUString& rOUString, b
         SAL_WARN("svx", "XOutBitmap::GraphicToBase64() invalid Graphic? error: " << nErr );
         return false;
     }
-    aOStm.Seek(STREAM_SEEK_TO_END);
-    css::uno::Sequence<sal_Int8> aOStmSeq( static_cast<sal_Int8 const *>(aOStm.GetData()),aOStm.Tell() );
+    css::uno::Sequence<sal_Int8> aOStmSeq( static_cast<sal_Int8 const *>(aOStm.GetData()),aOStm.TellEnd() );
     OUStringBuffer aStrBuffer;
     ::comphelper::Base64::encode(aStrBuffer,aOStmSeq);
     rOUString = aStrBuffer.makeStringAndClear();
diff --git a/sw/qa/extras/htmlexport/htmlexport.cxx b/sw/qa/extras/htmlexport/htmlexport.cxx
index 861054868ec1..1c5effbac61b 100644
--- a/sw/qa/extras/htmlexport/htmlexport.cxx
+++ b/sw/qa/extras/htmlexport/htmlexport.cxx
@@ -356,9 +356,7 @@ DECLARE_HTMLEXPORT_TEST(testReqIfParagraph, "reqif-p.xhtml")
 {
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
 
     OString aExpected("<reqif-xhtml:div><reqif-xhtml:p>aaa<reqif-xhtml:br/>\nbbb"
                       "</reqif-xhtml:p>" SAL_NEWLINE_STRING);
@@ -444,9 +442,7 @@ DECLARE_HTMLEXPORT_ROUNDTRIP_TEST(testReqIfOleImg, "reqif-ole-img.xhtml")
     // "type" attribute was missing for the inner <object> element.
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     CPPUNIT_ASSERT(aStream.indexOf("type=\"image/png\"") != -1);
 }
@@ -470,9 +466,7 @@ DECLARE_HTMLEXPORT_ROUNDTRIP_TEST(testReqIfPngImg, "reqif-png-img.xhtml")
     // subset.
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     CPPUNIT_ASSERT(aStream.indexOf("<reqif-xhtml:object") != -1);
 
@@ -487,9 +481,7 @@ DECLARE_HTMLEXPORT_TEST(testReqIfJpgImg, "reqif-jpg-img.xhtml")
 {
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     // This was image/jpeg, JPG was not converted to PNG in ReqIF mode.
     CPPUNIT_ASSERT(aStream.indexOf("type=\"image/png\"") != -1);
@@ -514,9 +506,7 @@ DECLARE_HTMLEXPORT_TEST(testReqIfTable2, "reqif-table2.odt")
 {
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     // This failed, <reqif-xhtml:td width="..."> was written.
     CPPUNIT_ASSERT(aStream.indexOf("<reqif-xhtml:td>") != -1);
@@ -526,9 +516,7 @@ DECLARE_HTMLEXPORT_TEST(testReqIfWellFormed, "reqif.odt")
 {
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     // This failed, <font face="..."> was written.
     CPPUNIT_ASSERT(aStream.indexOf("<reqif-xhtml:span style=\"font-family:") != -1);
@@ -540,9 +528,7 @@ DECLARE_HTMLEXPORT_TEST(testReqIfList, "reqif-list.xhtml")
 {
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     // This failed, <ul> was written.
     CPPUNIT_ASSERT(aStream.indexOf("<reqif-xhtml:ul>") != -1);
@@ -594,9 +580,7 @@ DECLARE_HTMLEXPORT_TEST(testList, "list.html")
 {
     SvStream* pStream = maTempFile.GetStream(StreamMode::READ);
     CPPUNIT_ASSERT(pStream);
-    pStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt64 nLength = pStream->Tell();
-    pStream->Seek(0);
+    sal_uInt64 nLength = pStream->TellEnd();
     OString aStream(read_uInt8s_ToOString(*pStream, nLength));
     // This failed, it was <li/>, i.e. list item was closed before content
     // started.
diff --git a/sw/source/core/doc/swserv.cxx b/sw/source/core/doc/swserv.cxx
index 8d00223b680f..288db677587c 100644
--- a/sw/source/core/doc/swserv.cxx
+++ b/sw/source/core/doc/swserv.cxx
@@ -97,7 +97,7 @@ bool SwServerObject::GetData( uno::Any & rData,
                 aMemStm.WriteChar( '\0' );        // append a zero char
                 rData <<= uno::Sequence< sal_Int8 >(
                                         static_cast<sal_Int8 const *>(aMemStm.GetData()),
-                                        aMemStm.Seek( STREAM_SEEK_TO_END ) );
+                                        aMemStm.Tell() );
                 bRet = true;
             }
             delete pPam;
diff --git a/sw/source/filter/ascii/parasc.cxx b/sw/source/filter/ascii/parasc.cxx
index 183f32a148d3..a6b41a588aae 100644
--- a/sw/source/filter/ascii/parasc.cxx
+++ b/sw/source/filter/ascii/parasc.cxx
@@ -134,10 +134,8 @@ SwASCIIParser::SwASCIIParser(SwDoc* pD, const SwPaM& rCursor, SvStream& rIn,
 // Calling the parser
 ErrCode SwASCIIParser::CallParser()
 {
-    rInput.Seek(STREAM_SEEK_TO_END);
     rInput.ResetError();
-
-    nFileSize = rInput.Tell();
+    nFileSize = rInput.TellEnd();
     rInput.Seek(STREAM_SEEK_TO_BEGIN);
     rInput.ResetError();
 
diff --git a/sw/source/filter/html/htmlcss1.cxx b/sw/source/filter/html/htmlcss1.cxx
index 316dc4516011..36bbdbafce18 100644
--- a/sw/source/filter/html/htmlcss1.cxx
+++ b/sw/source/filter/html/htmlcss1.cxx
@@ -1701,8 +1701,7 @@ bool SwHTMLParser::FileDownload( const OUString& rURL,
         SvMemoryStream aStream;
         aStream.WriteStream( *pStream );
 
-        aStream.Seek( STREAM_SEEK_TO_END );
-        rStr = OUString(static_cast<const sal_Char *>(aStream.GetData()), aStream.Tell(),
+        rStr = OUString(static_cast<const sal_Char *>(aStream.GetData()), aStream.TellEnd(),
             GetSrcEncoding());
     }
 
diff --git a/sw/source/filter/html/htmlreqifreader.cxx b/sw/source/filter/html/htmlreqifreader.cxx
index 3b5c2f65f4d9..cdc443f42cee 100644
--- a/sw/source/filter/html/htmlreqifreader.cxx
+++ b/sw/source/filter/html/htmlreqifreader.cxx
@@ -124,8 +124,7 @@ OString InsertOLE1Header(SvStream& rOle2, SvStream& rOle1)
     rOle1.WriteUInt32(0);
 
     // NativeDataSize
-    rOle2.Seek(STREAM_SEEK_TO_END);
-    rOle1.WriteUInt32(rOle2.Tell());
+    rOle1.WriteUInt32(rOle2.TellEnd());
 
     // Write the actual native data.
     rOle2.Seek(0);
diff --git a/sw/source/filter/ww8/rtfattributeoutput.cxx b/sw/source/filter/ww8/rtfattributeoutput.cxx
index efbec3e6cf0a..05bcce08dfcf 100644
--- a/sw/source/filter/ww8/rtfattributeoutput.cxx
+++ b/sw/source/filter/ww8/rtfattributeoutput.cxx
@@ -3829,8 +3829,7 @@ void RtfAttributeOutput::FlyFrameOLEReplacement(const SwFlyFrameFormat* pFlyFram
     SvMemoryStream aStream;
     if (GraphicConverter::Export(aStream, *pGraphic, ConvertDataFormat::PNG) != ERRCODE_NONE)
         SAL_WARN("sw.rtf", "failed to export the graphic");
-    aStream.Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nSize = aStream.Tell();
+    sal_uInt32 nSize = aStream.TellEnd();
     pGraphicAry = static_cast<sal_uInt8 const*>(aStream.GetData());
     m_aRunText->append(ExportPICT(pFlyFrameFormat, aSize, aRendered, aMapped, rCr, pBLIPType,
                                   pGraphicAry, nSize, m_rExport));
@@ -3840,8 +3839,7 @@ void RtfAttributeOutput::FlyFrameOLEReplacement(const SwFlyFrameFormat* pFlyFram
     SvMemoryStream aWmfStream;
     if (GraphicConverter::Export(aWmfStream, *pGraphic, ConvertDataFormat::WMF) != ERRCODE_NONE)
         SAL_WARN("sw.rtf", "failed to export the graphic");
-    aWmfStream.Seek(STREAM_SEEK_TO_END);
-    nSize = aWmfStream.Tell();
+    nSize = aWmfStream.TellEnd();
     pGraphicAry = static_cast<sal_uInt8 const*>(aWmfStream.GetData());
     m_aRunText->append(ExportPICT(pFlyFrameFormat, aSize, aRendered, aMapped, rCr, pBLIPType,
                                   pGraphicAry, nSize, m_rExport));
@@ -3960,8 +3958,7 @@ void RtfAttributeOutput::FlyFrameGraphic(const SwFlyFrameFormat* pFlyFrameFormat
         {
             pBLIPType = (eGraphicType == GraphicType::Bitmap) ? OOO_STRING_SVTOOLS_RTF_PNGBLIP
                                                               : OOO_STRING_SVTOOLS_RTF_WMETAFILE;
-            aStream.Seek(STREAM_SEEK_TO_END);
-            nSize = aStream.Tell();
+            nSize = aStream.TellEnd();
             pGraphicAry = static_cast<sal_uInt8 const*>(aStream.GetData());
         }
     }
@@ -4079,8 +4076,7 @@ void RtfAttributeOutput::FlyFrameGraphic(const SwFlyFrameFormat* pFlyFrameFormat
         if (GraphicConverter::Export(aStream, rGraphic, aConvertDestinationFormat) != ERRCODE_NONE)
             SAL_WARN("sw.rtf", "failed to export the graphic");
         pBLIPType = pConvertDestinationBLIPType;
-        aStream.Seek(STREAM_SEEK_TO_END);
-        nSize = aStream.Tell();
+        nSize = aStream.TellEnd();
         pGraphicAry = static_cast<sal_uInt8 const*>(aStream.GetData());
 
         ExportPICT(pFlyFrameFormat, aSize, aRendered, aMapped, rCr, pBLIPType, pGraphicAry, nSize,
@@ -4098,8 +4094,7 @@ void RtfAttributeOutput::FlyFrameGraphic(const SwFlyFrameFormat* pFlyFrameFormat
             if (GraphicConverter::Export(aStream, rGraphic, ConvertDataFormat::WMF) != ERRCODE_NONE)
                 SAL_WARN("sw.rtf", "failed to export the graphic");
             pBLIPType = OOO_STRING_SVTOOLS_RTF_WMETAFILE;
-            aStream.Seek(STREAM_SEEK_TO_END);
-            nSize = aStream.Tell();
+            nSize = aStream.TellEnd();
             pGraphicAry = static_cast<sal_uInt8 const*>(aStream.GetData());
 
             ExportPICT(pFlyFrameFormat, aSize, aRendered, aMapped, rCr, pBLIPType, pGraphicAry,
@@ -4129,8 +4124,7 @@ void RtfAttributeOutput::BulletDefinition(int /*nId*/, const Graphic& rGraphic,
     SvMemoryStream aStream;
     if (GraphicConverter::Export(aStream, rGraphic, ConvertDataFormat::PNG) != ERRCODE_NONE)
         SAL_WARN("sw.rtf", "failed to export the numbering picture bullet");
-    aStream.Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nSize = aStream.Tell();
+    sal_uInt32 nSize = aStream.TellEnd();
     pGraphicAry = static_cast<sal_uInt8 const*>(aStream.GetData());
     msfilter::rtfutil::WriteHex(pGraphicAry, nSize, &m_rExport.Strm());
     m_rExport.Strm().WriteCharPtr("}}"); // pict, shppict
diff --git a/sw/source/filter/ww8/rtfsdrexport.cxx b/sw/source/filter/ww8/rtfsdrexport.cxx
index 6d2ed207fff6..51ec0f3f638e 100644
--- a/sw/source/filter/ww8/rtfsdrexport.cxx
+++ b/sw/source/filter/ww8/rtfsdrexport.cxx
@@ -523,8 +523,7 @@ void RtfSdrExport::impl_writeGraphic()
     // Export it to a stream.
     SvMemoryStream aStream;
     (void)GraphicConverter::Export(aStream, aGraphic, ConvertDataFormat::PNG);
-    aStream.Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nSize = aStream.Tell();
+    sal_uInt32 nSize = aStream.TellEnd();
     auto pGraphicAry = static_cast<sal_uInt8 const*>(aStream.GetData());
 
     Size aMapped(aGraphic.GetPrefSize());
diff --git a/sw/source/filter/ww8/wrtww8.cxx b/sw/source/filter/ww8/wrtww8.cxx
index c6dda312b4b1..ca6c7dc4db8f 100644
--- a/sw/source/filter/ww8/wrtww8.cxx
+++ b/sw/source/filter/ww8/wrtww8.cxx
@@ -3122,8 +3122,7 @@ namespace
 
     ErrCode EncryptRC4(msfilter::MSCodec_Std97& rCtx, SvStream &rIn, SvStream &rOut)
     {
-        rIn.Seek(STREAM_SEEK_TO_END);
-        sal_uLong nLen = rIn.Tell();
+        sal_uLong nLen = rIn.TellEnd();
         rIn.Seek(0);
 
         sal_uInt8 in[WW_BLOCKSIZE];
@@ -3793,8 +3792,7 @@ void WW8Export::RestoreMacroCmds()
 
         if ( pStream && ERRCODE_NONE == pStream->GetError())
         {
-            pStream->Seek(STREAM_SEEK_TO_END);
-            pFib->m_lcbCmds = pStream->Tell();
+            pFib->m_lcbCmds = pStream->TellEnd();
             pStream->Seek(0);
 
             std::unique_ptr<sal_uInt8[]> pBuffer( new sal_uInt8[pFib->m_lcbCmds] );
diff --git a/sw/source/filter/ww8/ww8par.cxx b/sw/source/filter/ww8/ww8par.cxx
index 707953b16c5a..32638e8cd51e 100644
--- a/sw/source/filter/ww8/ww8par.cxx
+++ b/sw/source/filter/ww8/ww8par.cxx
@@ -1071,8 +1071,7 @@ SdrObject* SwMSDffManager::ProcessObj(SvStream& rSt,
         if (rSt.ReadBytes(aBuffer.data(), nBufferSize) == nBufferSize)
         {
             aMemStream.WriteBytes(aBuffer.data(), nBufferSize);
-            aMemStream.Seek( STREAM_SEEK_TO_END );
-            sal_uInt8 nStreamSize = aMemStream.Tell();
+            sal_uInt8 nStreamSize = aMemStream.TellEnd();
             aMemStream.Seek( STREAM_SEEK_TO_BEGIN );
             bool bRet = 4 <= nStreamSize;
             if( bRet )
@@ -5466,8 +5465,7 @@ namespace
 
     void DecryptRC4(msfilter::MSCodec97& rCtx, SvStream &rIn, SvStream &rOut)
     {
-        rIn.Seek(STREAM_SEEK_TO_END);
-        const std::size_t nLen = rIn.Tell();
+        const std::size_t nLen = rIn.TellEnd();
         rIn.Seek(0);
 
         sal_uInt8 in[WW_BLOCKSIZE];
@@ -5484,9 +5482,7 @@ namespace
     void DecryptXOR(msfilter::MSCodec_XorWord95 &rCtx, SvStream &rIn, SvStream &rOut)
     {
         std::size_t nSt = rIn.Tell();
-        rIn.Seek(STREAM_SEEK_TO_END);
-        std::size_t nLen = rIn.Tell();
-        rIn.Seek(nSt);
+        std::size_t nLen = rIn.TellEnd();
 
         rCtx.InitCipher();
         rCtx.Skip(nSt);
diff --git a/sw/source/filter/ww8/ww8scan.cxx b/sw/source/filter/ww8/ww8scan.cxx
index 0200cc99e4b9..569912912c0d 100644
--- a/sw/source/filter/ww8/ww8scan.cxx
+++ b/sw/source/filter/ww8/ww8scan.cxx
@@ -6264,9 +6264,7 @@ void WW8Fib::WriteHeader(SvStream& rStrm)
     sal_uInt8 *pData = pDataPtr.get();
     memset( pData, 0, nUnencryptedHdr );
 
-    const sal_uInt64 nPos = rStrm.Tell();
-    m_cbMac = rStrm.Seek( STREAM_SEEK_TO_END );
-    rStrm.Seek(nPos);
+    m_cbMac = rStrm.TellEnd();
 
     Set_UInt16( pData, m_wIdent );
     Set_UInt16( pData, m_nFib );
@@ -6351,9 +6349,7 @@ void WW8Fib::Write(SvStream& rStrm)
     sal_uInt8 *pData = pDataPtr.get();
     memset( pData, 0, m_fcMin - nUnencryptedHdr );
 
-    const sal_uInt64 nPos = rStrm.Tell();
-    m_cbMac = rStrm.Seek( STREAM_SEEK_TO_END );
-    rStrm.Seek(nPos);
+    m_cbMac = rStrm.TellEnd();
 
     // ignore 2 longs, because they are unimportant
     pData += 2 * sizeof( sal_Int32);
diff --git a/sw/source/uibase/dbui/mailmergehelper.cxx b/sw/source/uibase/dbui/mailmergehelper.cxx
index 9768744eeca6..c5ccb9a3c16d 100644
--- a/sw/source/uibase/dbui/mailmergehelper.cxx
+++ b/sw/source/uibase/dbui/mailmergehelper.cxx
@@ -694,8 +694,7 @@ uno::Any SwMailTransferable::getTransferData( const datatransfer::DataFlavor& /*
         SvStream* pStream = aMedium.GetInStream();
         if ( aMedium.GetErrorCode() == ERRCODE_NONE && pStream)
         {
-            pStream->Seek(STREAM_SEEK_TO_END);
-            aData.realloc(pStream->Tell());
+            aData.realloc(pStream->TellEnd());
             pStream->Seek(0);
             sal_Int8 * pData = aData.getArray();
             pStream->ReadBytes( pData, aData.getLength() );
diff --git a/sw/source/uibase/uno/SwXDocumentSettings.cxx b/sw/source/uibase/uno/SwXDocumentSettings.cxx
index 12ac99b6fbcd..37caae8f406d 100644
--- a/sw/source/uibase/uno/SwXDocumentSettings.cxx
+++ b/sw/source/uibase/uno/SwXDocumentSettings.cxx
@@ -1021,8 +1021,7 @@ void SwXDocumentSettings::_getSingleValue( const comphelper::PropertyInfo & rInf
             {
                 SvMemoryStream aStream;
                 pPrinter->Store( aStream );
-                aStream.Seek ( STREAM_SEEK_TO_END );
-                sal_uInt32 nSize = aStream.Tell();
+                sal_uInt32 nSize = aStream.TellEnd();
                 aStream.Seek ( STREAM_SEEK_TO_BEGIN );
                 Sequence < sal_Int8 > aSequence( nSize );
                 aStream.ReadBytes(aSequence.getArray(), nSize);
diff --git a/unotools/source/streaming/streamwrap.cxx b/unotools/source/streaming/streamwrap.cxx
index bcc365d961b1..97d05180b020 100644
--- a/unotools/source/streaming/streamwrap.cxx
+++ b/unotools/source/streaming/streamwrap.cxx
@@ -177,16 +177,11 @@ sal_Int64 SAL_CALL OSeekableInputStreamWrapper::getLength(  )
     ::osl::MutexGuard aGuard( m_aMutex );
     checkConnected();
 
-    sal_uInt32 nCurrentPos = m_pSvStream->Tell();
     checkError();
 
-    m_pSvStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nEndPos = m_pSvStream->Tell();
-    m_pSvStream->Seek(nCurrentPos);
+    sal_Int64 nEndPos = m_pSvStream->TellEnd();
 
-    checkError();
-
-    return static_cast<sal_Int64>(nEndPos);
+    return nEndPos;
 }
 
 //= OOutputStreamWrapper
@@ -268,16 +263,11 @@ sal_Int64 SAL_CALL OSeekableOutputStreamWrapper::getPosition(  )
 
 sal_Int64 SAL_CALL OSeekableOutputStreamWrapper::getLength(  )
 {
-    sal_uInt32 nCurrentPos = rStream.Tell();
     checkError();
 
-    rStream.Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nEndPos = rStream.Tell();
-    rStream.Seek(nCurrentPos);
-
-    checkError();
+    sal_Int64 nEndPos = rStream.TellEnd();
 
-    return static_cast<sal_Int64>(nEndPos);
+    return nEndPos;
 }
 
 OStreamWrapper::~OStreamWrapper() = default;
diff --git a/unotools/source/ucbhelper/xtempfile.cxx b/unotools/source/ucbhelper/xtempfile.cxx
index 5437044b8586..8bfe8b14a009 100644
--- a/unotools/source/ucbhelper/xtempfile.cxx
+++ b/unotools/source/ucbhelper/xtempfile.cxx
@@ -338,16 +338,11 @@ sal_Int64 SAL_CALL OTempFileService::getLength(  )
     ::osl::MutexGuard aGuard( maMutex );
     checkConnected();
 
-    sal_uInt32 nCurrentPos = mpStream->Tell();
     checkError();
 
-    mpStream->Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 nEndPos = mpStream->Tell();
-    mpStream->Seek(nCurrentPos);
+    sal_Int64 nEndPos = mpStream->TellEnd();
 
-    checkError();
-
-    return static_cast<sal_Int64>(nEndPos);
+    return nEndPos;
 }
 
 // XStream
diff --git a/vcl/source/edit/textview.cxx b/vcl/source/edit/textview.cxx
index 5eb59e3eac9e..54757b008881 100644
--- a/vcl/source/edit/textview.cxx
+++ b/vcl/source/edit/textview.cxx
@@ -88,8 +88,7 @@ css::uno::Any TETextDataObject::getTransferData( const css::datatransfer::DataFl
     }
     else if ( nT == SotClipboardFormatId::HTML )
     {
-        GetHTMLStream().Seek( STREAM_SEEK_TO_END );
-        sal_uLong nLen = GetHTMLStream().Tell();
+        sal_uLong nLen = GetHTMLStream().TellEnd();
         GetHTMLStream().Seek(0);
 
         css::uno::Sequence< sal_Int8 > aSeq( nLen );
diff --git a/vcl/source/filter/graphicfilter.cxx b/vcl/source/filter/graphicfilter.cxx
index 6cd6043dba9e..6eaccfbc37ee 100644
--- a/vcl/source/filter/graphicfilter.cxx
+++ b/vcl/source/filter/graphicfilter.cxx
@@ -244,10 +244,7 @@ static bool ImpPeekGraphicFormat( SvStream& rStream, OUString& rFormatExtension,
     sal_uInt8   sFirstBytes[ 256 ];
     sal_uLong   nFirstLong(0), nSecondLong(0);
     sal_uLong   nStreamPos = rStream.Tell();
-
-    rStream.Seek( STREAM_SEEK_TO_END );
-    sal_uLong nStreamLen = rStream.Tell() - nStreamPos;
-    rStream.Seek( nStreamPos );
+    sal_uLong   nStreamLen = rStream.remainingSize();
 
     if ( !nStreamLen )
     {
@@ -255,9 +252,7 @@ static bool ImpPeekGraphicFormat( SvStream& rStream, OUString& rFormatExtension,
         if ( pLockBytes  )
             pLockBytes->SetSynchronMode();
 
-        rStream.Seek( STREAM_SEEK_TO_END );
-        nStreamLen = rStream.Tell() - nStreamPos;
-        rStream.Seek( nStreamPos );
+        nStreamLen = rStream.remainingSize();
     }
 
     if (!nStreamLen)
@@ -1448,7 +1443,7 @@ Graphic GraphicFilter::ImportUnloadedGraphic(SvStream& rIStream)
     ErrCode nStatus = ImpTestOrFindFormat("", rIStream, nFormat);
 
     rIStream.Seek(nStreamBegin);
-    const sal_uInt32 nStreamLength(rIStream.Seek(STREAM_SEEK_TO_END) - nStreamBegin);
+    const sal_uInt32 nStreamLength(rIStream.remainingSize());
 
     OUString aFilterName = pConfig->GetImportFilterName(nFormat);
     OUString aExternalFilterName = pConfig->GetExternalFilterName(nFormat, false);
@@ -1849,14 +1844,13 @@ ErrCode GraphicFilter::ImportGraphic( Graphic& rGraphic, const OUString& rPath,
         else if( aFilterName.equalsIgnoreAsciiCase( IMP_SVG ) )
         {
             const sal_uInt32 nStreamPosition(rIStream.Tell());
-            const sal_uInt32 nStreamLength(rIStream.Seek(STREAM_SEEK_TO_END) - nStreamPosition);
+            const sal_uInt32 nStreamLength(rIStream.remainingSize());
 
             bool bOkay(false);
 
             if(nStreamLength > 0)
             {
                 std::vector<sal_uInt8> aTwoBytes(2);
-                rIStream.Seek(nStreamPosition);
                 rIStream.ReadBytes(&aTwoBytes[0], 2);
                 rIStream.Seek(nStreamPosition);
 
@@ -1892,7 +1886,6 @@ ErrCode GraphicFilter::ImportGraphic( Graphic& rGraphic, const OUString& rPath,
                 else
                 {
                     VectorGraphicDataArray aNewData(nStreamLength);
-                    rIStream.Seek(nStreamPosition);
                     rIStream.ReadBytes(aNewData.begin(), nStreamLength);
 
                     if(!rIStream.GetError())
@@ -1957,12 +1950,10 @@ ErrCode GraphicFilter::ImportGraphic( Graphic& rGraphic, const OUString& rPath,
             // Graphic that contains the original data and decomposes to
             // primitives on demand
 
-            const sal_uInt32 nStreamPosition(rIStream.Tell());
-            const sal_uInt32 nStreamLength(rIStream.Seek(STREAM_SEEK_TO_END) - nStreamPosition);
+            const sal_uInt32 nStreamLength(rIStream.remainingSize());
             VectorGraphicDataArray aNewData(nStreamLength);
             bool bOkay(false);
 
-            rIStream.Seek(nStreamPosition);
             rIStream.ReadBytes(aNewData.begin(), nStreamLength);
 
             if (!rIStream.GetError())
diff --git a/vcl/source/filter/ipdf/pdfdocument.cxx b/vcl/source/filter/ipdf/pdfdocument.cxx
index c74bcbbade84..09cafdea9f45 100644
--- a/vcl/source/filter/ipdf/pdfdocument.cxx
+++ b/vcl/source/filter/ipdf/pdfdocument.cxx
@@ -2638,8 +2638,7 @@ void PDFObjectElement::ParseStoredObjects()
         return;
     }
 
-    aStream.Seek(STREAM_SEEK_TO_END);
-    nLength = aStream.Tell();
+    nLength = aStream.TellEnd();
     aStream.Seek(0);
     std::vector<size_t> aObjNums;
     std::vector<size_t> aOffsets;
diff --git a/vcl/source/filter/ipdf/pdfread.cxx b/vcl/source/filter/ipdf/pdfread.cxx
index 0f14529eec5c..9815e89a1a2b 100644
--- a/vcl/source/filter/ipdf/pdfread.cxx
+++ b/vcl/source/filter/ipdf/pdfread.cxx
@@ -231,8 +231,7 @@ bool ImportPDF(SvStream& rStream, Bitmap& rBitmap, size_t nPageIndex,
     if (!getCompatibleStream(rStream, aMemoryStream, nPos, nSize))
         return false;
 
-    aMemoryStream.Seek(STREAM_SEEK_TO_END);
-    rPdfData = css::uno::Sequence<sal_Int8>(aMemoryStream.Tell());
+    rPdfData = css::uno::Sequence<sal_Int8>(aMemoryStream.TellEnd());
     aMemoryStream.Seek(STREAM_SEEK_TO_BEGIN);
     aMemoryStream.ReadBytes(rPdfData.getArray(), rPdfData.getLength());
 
@@ -267,8 +266,7 @@ size_t ImportPDF(const OUString& rURL, std::vector<Bitmap>& rBitmaps,
     if (!getCompatibleStream(*xStream, aMemoryStream, STREAM_SEEK_TO_BEGIN, STREAM_SEEK_TO_END))
         return 0;
 
-    aMemoryStream.Seek(STREAM_SEEK_TO_END);
-    rPdfData = css::uno::Sequence<sal_Int8>(aMemoryStream.Tell());
+    rPdfData = css::uno::Sequence<sal_Int8>(aMemoryStream.TellEnd());
     aMemoryStream.Seek(STREAM_SEEK_TO_BEGIN);
     aMemoryStream.ReadBytes(rPdfData.getArray(), rPdfData.getLength());
 
diff --git a/vcl/source/filter/jpeg/Exif.cxx b/vcl/source/filter/jpeg/Exif.cxx
index c695a3a92983..725ebe1ae27e 100644
--- a/vcl/source/filter/jpeg/Exif.cxx
+++ b/vcl/source/filter/jpeg/Exif.cxx
@@ -87,8 +87,7 @@ bool Exif::processJpeg(SvStream& rStream, bool bSetValue)
     sal_uInt16  aMagic16;
     sal_uInt16  aLength;
 
-    rStream.Seek(STREAM_SEEK_TO_END);
-    sal_uInt32 aSize = rStream.Tell();
+    sal_uInt32 aSize = rStream.TellEnd();
     rStream.Seek(STREAM_SEEK_TO_BEGIN);
 
     rStream.SetEndian( SvStreamEndian::BIG );
diff --git a/vcl/source/filter/wmf/wmf.cxx b/vcl/source/filter/wmf/wmf.cxx
index 4bc8d11a6a01..05939e734483 100644
--- a/vcl/source/filter/wmf/wmf.cxx
+++ b/vcl/source/filter/wmf/wmf.cxx
@@ -31,7 +31,7 @@ bool ReadWindowMetafile( SvStream& rStream, GDIMetaFile& rMTF )
     // is nice enough to copy to an own MemStream to avoid that indirect
     // parameter passing...)
     const sal_uInt32 nStreamStart(rStream.Tell());
-    const sal_uInt32 nStreamEnd(rStream.Seek(STREAM_SEEK_TO_END));
+    const sal_uInt32 nStreamEnd(rStream.TellEnd());
 
     if (nStreamStart >= nStreamEnd)
     {
@@ -41,7 +41,6 @@ bool ReadWindowMetafile( SvStream& rStream, GDIMetaFile& rMTF )
     // Read binary data to mem array
     const sal_uInt32 nStreamLength(nStreamEnd - nStreamStart);
     VectorGraphicDataArray aNewData(nStreamLength);
-    rStream.Seek(nStreamStart);
     rStream.ReadBytes(aNewData.begin(), nStreamLength);
     rStream.Seek(nStreamStart);
 
diff --git a/vcl/source/gdi/gdimetafiletools.cxx b/vcl/source/gdi/gdimetafiletools.cxx
index 7420e65bcdce..1f9f610f14ef 100644
--- a/vcl/source/gdi/gdimetafiletools.cxx
+++ b/vcl/source/gdi/gdimetafiletools.cxx
@@ -238,7 +238,7 @@ namespace
                 "XPATHSTROKE_SEQ_BEGIN",
                 0,
                 static_cast< const sal_uInt8* >(aMemStm.GetData()),
-                aMemStm.Seek(STREAM_SEEK_TO_END)));
+                aMemStm.TellEnd()));
     }
 
     void addSvtGraphicFill(const SvtGraphicFill &rFilling, GDIMetaFile& rTarget)
@@ -251,7 +251,7 @@ namespace
                 "XPATHFILL_SEQ_BEGIN",
                 0,
                 static_cast< const sal_uInt8* >(aMemStm.GetData()),
-                aMemStm.Seek(STREAM_SEEK_TO_END)));
+                aMemStm.TellEnd()));
     }
 } // end of anonymous namespace
 
diff --git a/vcl/source/gdi/pdfwriter_impl.cxx b/vcl/source/gdi/pdfwriter_impl.cxx
index 0a25d2fd8120..150a85877809 100644
--- a/vcl/source/gdi/pdfwriter_impl.cxx
+++ b/vcl/source/gdi/pdfwriter_impl.cxx
@@ -2066,8 +2066,7 @@ bool PDFWriterImpl::compressStream( SvMemoryStream* pStream )
 {
     if (!g_bDebugDisableCompression)
     {
-        pStream->Seek( STREAM_SEEK_TO_END );
-        sal_uLong nEndPos = pStream->Tell();
+        sal_uLong nEndPos = pStream->TellEnd();
         pStream->Seek( STREAM_SEEK_TO_BEGIN );
         ZCodec aCodec( 0x4000, 0x4000 );
         SvMemoryStream aStream;
@@ -2758,8 +2757,7 @@ bool PDFWriterImpl::emitTilings()
             tiling.m_aCellSize.setHeight( nH );
 
         bool bDeflate = compressStream( tiling.m_pTilingStream.get() );
-        tiling.m_pTilingStream->Seek( STREAM_SEEK_TO_END );
-        sal_uInt64 const nTilingStreamSize = tiling.m_pTilingStream->Tell();
+        sal_uInt64 const nTilingStreamSize = tiling.m_pTilingStream->TellEnd();
         tiling.m_pTilingStream->Seek( STREAM_SEEK_TO_BEGIN );
 
         // write pattern object
@@ -4535,8 +4533,7 @@ bool PDFWriterImpl::emitAppearances( PDFWidget& rWidget, OStringBuffer& rAnnotDi
 
                 bool bDeflate = compressStream( pApppearanceStream );
 
-                pApppearanceStream->Seek( STREAM_SEEK_TO_END );
-                sal_Int64 nStreamLen = pApppearanceStream->Tell();
+                sal_Int64 nStreamLen = pApppearanceStream->TellEnd();
                 pApppearanceStream->Seek( STREAM_SEEK_TO_BEGIN );
                 sal_Int32 nObject = createObject();
                 CHECK_RETURN( updateObject( nObject ) );
@@ -8524,8 +8521,7 @@ void PDFWriterImpl::writeTransparentObject( TransparencyEmit& rObject )
     CHECK_RETURN2( updateObject( rObject.m_nObject ) );
 
     bool bFlateFilter = compressStream( rObject.m_pContentStream.get() );
-    rObject.m_pContentStream->Seek( STREAM_SEEK_TO_END );
-    sal_uLong nSize = rObject.m_pContentStream->Tell();
+    sal_uLong nSize = rObject.m_pContentStream->TellEnd();
     rObject.m_pContentStream->Seek( STREAM_SEEK_TO_BEGIN );
     if (g_bDebugDisableCompression)
     {
@@ -8609,8 +8605,7 @@ void PDFWriterImpl::writeTransparentObject( TransparencyEmit& rObject )
         }
         else
         {
-            rObject.m_pSoftMaskStream->Seek( STREAM_SEEK_TO_END );
-            sal_Int32 nMaskSize = static_cast<sal_Int32>(rObject.m_pSoftMaskStream->Tell());
+            sal_Int32 nMaskSize = static_cast<sal_Int32>(rObject.m_pSoftMaskStream->TellEnd());
             rObject.m_pSoftMaskStream->Seek( STREAM_SEEK_TO_BEGIN );
             sal_Int32 nMaskObject = createObject();
             aLine.append( "/SMask<</Type/Mask/S/Luminosity/G " );
@@ -8882,9 +8877,7 @@ void PDFWriterImpl::writeJPG( JPGEmit& rObject )
     CHECK_RETURN2( rObject.m_pStream );
     CHECK_RETURN2( updateObject( rObject.m_nObject ) );
 
-    sal_Int32 nLength = 0;
-    rObject.m_pStream->Seek( STREAM_SEEK_TO_END );
-    nLength = rObject.m_pStream->Tell();
+    sal_Int32 nLength = rObject.m_pStream->TellEnd();
     rObject.m_pStream->Seek( STREAM_SEEK_TO_BEGIN );
 
     sal_Int32 nMaskObject = 0;
diff --git a/vcl/source/gdi/pdfwriter_impl2.cxx b/vcl/source/gdi/pdfwriter_impl2.cxx
index a4ce58af0e20..7636569fd8fb 100644
--- a/vcl/source/gdi/pdfwriter_impl2.cxx
+++ b/vcl/source/gdi/pdfwriter_impl2.cxx
@@ -181,8 +181,7 @@ void PDFWriterImpl::implWriteBitmapEx( const Point& i_rPoint, const Size& i_rSiz
                 aTemp.SetCompressMode( aTemp.GetCompressMode() | SvStreamCompressFlags::ZBITMAP );
                 aTemp.SetVersion( SOFFICE_FILEFORMAT_40 );  // sj: up from version 40 our bitmap stream operator
                 WriteDIBBitmapEx(aBitmapEx, aTemp); // is capable of zlib stream compression
-                aTemp.Seek( STREAM_SEEK_TO_END );
-                nZippedFileSize = aTemp.Tell();
+                nZippedFileSize = aTemp.TellEnd();
             }
             if ( aBitmapEx.IsTransparent() )
             {
diff --git a/vcl/source/gdi/pngread.cxx b/vcl/source/gdi/pngread.cxx
index b1c1e28b8384..78e3a19c7381 100644
--- a/vcl/source/gdi/pngread.cxx
+++ b/vcl/source/gdi/pngread.cxx
@@ -229,10 +229,7 @@ PNGReaderImpl::PNGReaderImpl( SvStream& rPNGStream )
     maChunkIter = maChunkSeq.begin();
 
     // estimate PNG file size (to allow sanity checks)
-    const std::size_t nStreamPos = mrPNGStream.Tell();
-    mrPNGStream.Seek( STREAM_SEEK_TO_END );
-    mnStreamSize = mrPNGStream.Tell();
-    mrPNGStream.Seek( nStreamPos );
+    mnStreamSize = mrPNGStream.TellEnd();
 
     // check the PNG header magic
     sal_uInt32 nDummy = 0;
diff --git a/vcl/source/graphic/UnoGraphicProvider.cxx b/vcl/source/graphic/UnoGraphicProvider.cxx
index 82823b8152b1..ef0fd14c0149 100644
--- a/vcl/source/graphic/UnoGraphicProvider.cxx
+++ b/vcl/source/graphic/UnoGraphicProvider.cxx
@@ -818,8 +818,7 @@ void SAL_CALL GraphicProvider::storeGraphic( const uno::Reference< ::graphic::XG
                                         rFilter.GetExportFormatNumberForShortName( OUString::createFromAscii( pFilterShortName ) ),
                                             ( aFilterDataSeq.getLength() ? &aFilterDataSeq : nullptr ) );
             }
-            aMemStrm.Seek( STREAM_SEEK_TO_END );
-            pOStm->WriteBytes( aMemStrm.GetData(), aMemStrm.Tell() );
+            pOStm->WriteBytes( aMemStrm.GetData(), aMemStrm.TellEnd() );
         }
     }
 }
diff --git a/vcl/unx/gtk/gtksalmenu.cxx b/vcl/unx/gtk/gtksalmenu.cxx
index aa2f0eeab396..e504e5d7aef0 100644
--- a/vcl/unx/gtk/gtksalmenu.cxx
+++ b/vcl/unx/gtk/gtksalmenu.cxx
@@ -988,7 +988,7 @@ void GtkSalMenu::NativeSetItemIcon( unsigned nSection, unsigned nItemPos, const
         aWriter.Write(*pMemStm);
 
         GBytes *pBytes = g_bytes_new_with_free_func(pMemStm->GetData(),
-                                                    pMemStm->Seek(STREAM_SEEK_TO_END),
+                                                    pMemStm->TellEnd(),
                                                     DestroyMemoryStream,
                                                     pMemStm);
 
diff --git a/vcl/unx/gtk3/gtk3gtkinst.cxx b/vcl/unx/gtk3/gtk3gtkinst.cxx
index dd69aad8ad98..4fa46987cb68 100644
--- a/vcl/unx/gtk3/gtk3gtkinst.cxx
+++ b/vcl/unx/gtk3/gtk3gtkinst.cxx
@@ -1611,7 +1611,7 @@ namespace
         {
             GdkPixbufLoader *pixbuf_loader = gdk_pixbuf_loader_new();
             gdk_pixbuf_loader_write(pixbuf_loader, static_cast<const guchar*>(xMemStm->GetData()),
-                                    xMemStm->Seek(STREAM_SEEK_TO_END), nullptr);
+                                    xMemStm->TellEnd(), nullptr);
             gdk_pixbuf_loader_close(pixbuf_loader, nullptr);
             pixbuf = gdk_pixbuf_loader_get_pixbuf(pixbuf_loader);
             if (pixbuf)
diff --git a/xmlsecurity/source/helper/xmlsignaturehelper2.cxx b/xmlsecurity/source/helper/xmlsignaturehelper2.cxx
index 8d5a0d0d2513..bb281b10be88 100644
--- a/xmlsecurity/source/helper/xmlsignaturehelper2.cxx
+++ b/xmlsecurity/source/helper/xmlsignaturehelper2.cxx
@@ -58,9 +58,7 @@ uno::Reference< io::XInputStream > SAL_CALL UriBindingHelper::getUriBinding( con
     else
     {
         SvFileStream* pStream = new SvFileStream( uri, StreamMode::READ );
-        pStream->Seek( STREAM_SEEK_TO_END );
-        sal_uLong nBytes = pStream->Tell();
-        pStream->Seek( STREAM_SEEK_TO_BEGIN );
+        sal_uLong nBytes = pStream->TellEnd();
         SvLockBytesRef xLockBytes = new SvLockBytes( pStream, true );
         xInputStream = new utl::OInputStreamHelper( xLockBytes, nBytes );
     }