Add tools related for update

b2qt-update-application is for doing the actual update.
b2qt-update-util is for initiating and finishing the update.

Change-Id: Ide1c1ba307d9346bacf83c507816feecefe87a16
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@digia.com>

3 files changed, 144 insertions, 0 deletions

diff --git a/src/b2qt-update-util/.gitignore b/src/b2qt-update-util/.gitignore
new file mode 100644
index 0000000..67f0098
--- /dev/null
+++ b/src/b2qt-update-util/.gitignore
@@ -0,0 +1,4 @@
+Makefile
+b2qt-update-util
+*.o
+moc_*.cpp
diff --git a/src/b2qt-update-util/b2qt-update-util.pro b/src/b2qt-update-util/b2qt-update-util.pro
new file mode 100644
index 0000000..87397b4
--- /dev/null
+++ b/src/b2qt-update-util/b2qt-update-util.pro
@@ -0,0 +1,2 @@
+QT = core
+SOURCES = main.cpp
diff --git a/src/b2qt-update-util/main.cpp b/src/b2qt-update-util/main.cpp
new file mode 100644
index 0000000..ae26dc5
--- /dev/null
+++ b/src/b2qt-update-util/main.cpp
@@ -0,0 +1,138 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use the contact form at
+** http://qt.digia.com/
+**
+** This file is part of Qt Enterprise Embedded.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** the contact form at http://qt.digia.com/
+**
+****************************************************************************/
+
+#include <QCoreApplication>
+#include <sys/reboot.h>
+#include <QFile>
+#include <QDebug>
+#include <unistd.h>
+#include <QStringList>
+#include <QProcess>
+
+bool mount_boot()
+{
+    return QProcess::execute("mount", QStringList() << "/dev/mmcblk0p1" << "/boot") == 0;
+}
+
+bool umount_boot()
+{
+    return QProcess::execute("umount", QStringList() << "/boot") == 0;
+}
+
+bool finish_update()
+{
+    if (!mount_boot()) {
+        qWarning() << "Could not mount /boot";
+        return false;
+    }
+    QFile f("/boot/update/state");
+    if (!f.open(QFile::WriteOnly)) {
+        qWarning() << "Could not open file for writing";
+        return false;
+    }
+    if (f.write("v") != 1) {
+        qWarning() << "Write error";
+        return false;
+    }
+    fsync(f.handle());
+    f.close();
+    if (!umount_boot()) {
+        qWarning() << "Could not unmount /boot";
+        return false;
+    }
+    return true;
+}
+
+int start_update(const QString &source)
+{
+    if (!mount_boot()) {
+        qWarning() << "Could not mount /boot";
+        return false;
+    }
+    {
+        QFile f("/boot/update/source");
+        if (!f.open(QFile::WriteOnly)) {
+            qWarning() << "Could not open file for writing";
+            return false;
+        }
+        QByteArray ba = source.toUtf8();
+
+        if (f.write(ba) != ba.size()) {
+            qWarning() << "Write error";
+            return false;
+        }
+        fsync(f.handle());
+        f.close();
+    }
+
+    {
+        QFile f("/boot/update/state");
+        if (!f.open(QFile::WriteOnly)) {
+            qWarning() << "Could not open file for writing";
+            return false;
+        }
+        if (f.write("u") != 1) {
+            qWarning() << "Write error";
+            return false;
+        }
+        fsync(f.handle());
+        f.close();
+    }
+    if (!umount_boot()) {
+        qWarning() << "Could not unmount /boot";
+        return false;
+    }
+    reboot(RB_AUTOBOOT);
+    return true;
+}
+
+void usage()
+{
+  fprintf(stderr,
+    "b2qt-update [start|finish] [...]\n"
+    "   start: For internet update provide a http URL as parameter\n"
+    "   finish: An update\n"
+    );
+}
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+    QStringList args = app.arguments();
+
+    args.removeFirst();
+    if (args.size() == 0) {
+        usage();
+        return 1;
+    }
+
+    QString arg = args.takeFirst();
+
+    if (arg == "finish")
+        return finish_update();
+    else if (arg == "start") {
+        if (args.size() == 0)
+            return start_update(QString());
+        else
+            return start_update(args.takeFirst());
+    } else {
+        usage();
+        return 1;
+    }
+}