1 files changed, 6 insertions, 1 deletions

diff --git a/src/sfile.h b/src/sfile.h
index f94aef7..f276ad2 100644
--- a/src/sfile.h
+++ b/src/sfile.h
@@ -13,7 +13,12 @@ public:
 
         virtual void close();
         virtual size_t read( char *pBuf, size_t nBytes );
-        virtual size_t write( char *pBuf, size_t nBytes );
+        virtual size_t write( const char *pBuf, size_t nBytes );
+
+        virtual long tell();
+        virtual void seek( long offset );
+        virtual void setPos( long pos );
+        virtual void setPosEnd( long pos );
 
 private:
         FILE *fh;