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/****************************************************************************
**
** 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()
{
// In some cases the boot partition is already mounted somewhere else.
// Mounting it again is no problem but data loss will happen.
QProcess::execute("umount", QStringList() << "/dev/mmcblk0p1"); // Ignore return value
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 if (arg == "version") {
printf("Version %s, SHA1 %s\n", GIT_VERSION, GIT_HASH);
return 0;
} else {
usage();
return 1;
}
}
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