Checkpointing some stuff. No way it'll build yet.

utils/cloudio/SMDataFile.h

@@ -0,0 +1,42 @@
+# copy some licensing stuff here
+
+
+#ifndef SMDATAFILE_H_
+#define SMDATAFILE_H_
+
+#include <string>
+#include <boost/utility.hpp>
+#include "IDBDataFile.h"
+#include "SMComm.h"
+
+namespace idbdatafile 
+{
+
+class SMDataFile : public IDBDataFile
+{
+    public:
+        virtual ~SMDataFile();
+
+        ssize_t pread(void* ptr, off64_t offset, size_t count);
+        ssize_t read(void* ptr, size_t count);
+        ssize_t write(const void* ptr, size_t count);
+        int seek(off64_t offset, int whence);
+        int truncate(off64_t length);
+        off64_t size();
+        off64_t tell();
+        int flush();
+        time_t mtime();
+    
+    private:
+        SMDataFile();
+        SMDataFile(const char *fname, int openmode, const struct stat &);
+        off64_t position;
+        int openmode;
+        SMComm *comm;
+        
+        friend class SMFileFactory;
+};
+
+}
+
+#endif