Index: sources/storage/filehandler.cpp
===================================================================
diff -u -rfbeafa0714f065bce0403e2e8ce68f6d8fbea6bd -r5963f00ffd2c557d3ae06a5deea05032a3a3bd68
--- sources/storage/filehandler.cpp	(.../filehandler.cpp)	(revision fbeafa0714f065bce0403e2e8ce68f6d8fbea6bd)
+++ sources/storage/filehandler.cpp	(.../filehandler.cpp)	(revision 5963f00ffd2c557d3ae06a5deea05032a3a3bd68)
@@ -21,6 +21,7 @@
 //Qt
 #include <QDebug>
 #include <QFileInfo>
+#include <QProcess>
 
 // Project
 #include "maintimer.h"
@@ -49,10 +50,16 @@
     return true;
 }
 
+void FileHandler::quit()
+{
+}
+
 void FileHandler::initConnections()
 {
     connect(_MainTimer  , SIGNAL(        didTimeout()),
             this        ,   SLOT(onMainTimerTimeout()));
+    //connect(&_processCopyFolder, SIGNAL(finished(int)),
+    //        this               ,   SLOT(copyFolder));
 }
 
 bool FileHandler::usbSeek(QString &vDevice) {
@@ -68,6 +75,34 @@
     return false;
 }
 
+bool FileHandler::write(const QString &vFileName, const QString &vContent, bool vAppend)
+{
+    QFile file(vFileName);
+    QIODevice::OpenMode openMode = vAppend ?
+                QFile::Text | QFile::Append :
+                QFile::Text | QFile::WriteOnly;
+    if (! file.open(openMode)) {
+        qDebug() << "ERROR :" << tr("Can't open file for write (%1)").arg(vFileName);
+        return false;
+    }
+    QTextStream out(&file);
+    out << vContent;
+    out.flush();
+    return true;
+}
+
+bool FileHandler::read(const QString &vFileName, QString &vContent)
+{
+    QFile file(vFileName);
+    if (! file.open(QFile::Text | QFile::ReadOnly)) {
+        qDebug() << "ERROR :" << tr("Can't open file for read (%1)").arg(vFileName);
+        return false;
+    }
+    QTextStream in(&file);
+    vContent = in.readAll();
+    return true;
+}
+
 void FileHandler::doUSBDriveMount()
 {
     QString device = "";
@@ -83,11 +118,43 @@
     }
 }
 
+bool FileHandler::doWrite(const QString &vFileName, const QString &vContent, bool vAppend)
+{
+    bool ok = write(vFileName, vContent, vAppend);
+    if (ok) {
+        emit didWrite(vFileName);
+    }
+    return ok;
+}
+
+bool FileHandler::doRead(const QString &vFileName)
+{
+    QString mContent;
+    bool ok = read(vFileName, mContent);
+    if (ok) {
+        emit didRead(vFileName, mContent);
+    }
+    return ok;
+}
+
+bool FileHandler::doExportFolder(const QString &vFolder)
+{
+    if ( _mounted ) {
+        QString cp = "cp";
+        QStringList arguments;
+        arguments << "-r" << vFolder << _usbMount;
+        _processCopyFolder.start(cp, arguments);
+        return true;
+    }
+    return false;
+}
+
 void FileHandler::usbError(const QString &vDevice)
 {
     switch (errno) {
     case EBUSY:
         qDebug() << tr("%1 - Device or resource busy (%2)").arg(errno).arg(vDevice);
+        _mounted = true;
         break;
     default:
         qDebug() << tr("%1 - %2 (%3 , %4)").arg(errno).arg(strerror(errno)).arg(vDevice).arg(_usbMount);
@@ -101,7 +168,7 @@
     _usbDrive = vDevice.toLatin1().constData();
     ok = mount(_usbDrive, _usbMount, _usbfsys, 0, "") == 0;
     if (ok) {
-        _mounted = false;
+        _mounted = true;
         qDebug() << tr("USB flash drive %1 has been mounted on %2").arg(vDevice).arg(_usbMount);
         emit didUSBDriveMount();
     } else {
@@ -115,6 +182,7 @@
     bool ok;
     ok = umount(vDevice.toLatin1().constData()) == 0;
     if (ok) {
+        _mounted = false;
         emit didUSBDriveUmount();
     } else {
         // the error is irrelevant, commented out for now