Trouble using /root as the target directory on my embedded device.

dewsoft

Other directories work fine but I can not target the root directory of my embedded device.

Here is the App Output
15:23:10: Starting /usr/bin/appcontroller /root/DevProg ...
"DBUS_SESSION_BUS_ADDRESS" "unix:abstract=/tmp/dbus-YJfUdCn1Zc,guid=18613c11cd13cbe14f8a15515d8d21a3"
"FB_MULTI_BUFFER" "2"
"QML2_IMPORT_PATH" "/data/user/qt/qmlplugins"
"QTWEBENGINE_DISABLE_SANDBOX" "1"
"QT_GSTREAMER_CAMERABIN_VIDEOSRC" "mxc_v4l2=imxv4l2videosrc,v4l2src"
"QT_IM_MODULE" "qtvirtualkeyboard"
"QT_QPA_EGLFS_FORCEVSYNC" "1"
"QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS" "/dev/input/event0"
"QT_QUICK_CONTROLS_1_STYLE" "Flat"
"XDG_RUNTIME_DIR" "/run/user/0"
"/root/DevProg" ()
Failed to start
Binary is not a file.
15:23:11: Application finished with exit code 0.

I'm fairly new to QT embedded Unix

jsulm

@dewsoft This is normal as only root user has access to /root.
Why do you want to deploy to /root?
Running applications as root is most of the time a bad idea (for the same reason it is a bad idea to work as Administrator on Windows).
Create a normal user and deploy to that users home directory instead of /root.

dewsoft

@dewsoft said in Trouble using \root as the target directory on my embedded device.:

Other directories work fine but I can not target the root directory of my embedded device.

Here is the App Output
15:23:10: Starting /usr/bin/appcontroller /root/DevProg ...
"DBUS_SESSION_BUS_ADDRESS" "unix:abstract=/tmp/dbus-YJfUdCn1Zc,guid=18613c11cd13cbe14f8a15515d8d21a3"
"FB_MULTI_BUFFER" "2"
"QML2_IMPORT_PATH" "/data/user/qt/qmlplugins"
"QTWEBENGINE_DISABLE_SANDBOX" "1"
"QT_GSTREAMER_CAMERABIN_VIDEOSRC" "mxc_v4l2=imxv4l2videosrc,v4l2src"
"QT_IM_MODULE" "qtvirtualkeyboard"
"QT_QPA_EGLFS_FORCEVSYNC" "1"
"QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS" "/dev/input/event0"
"QT_QUICK_CONTROLS_1_STYLE" "Flat"
"XDG_RUNTIME_DIR" "/run/user/0"
"/root/DevProg" ()
Failed to start
Binary is not a file.
15:23:11: Application finished with exit code 0.

I'm fairly new to QT embedded Unix

Here's the App output of a successful deployment
15:43:23: Starting /usr/bin/appcontroller /opt/DevProg/bin/DevProg ...
"DBUS_SESSION_BUS_ADDRESS" "unix:abstract=/tmp/dbus-YJfUdCn1Zc,guid=18613c11cd13cbe14f8a15515d8d21a3"
"FB_MULTI_BUFFER" "2"
"QML2_IMPORT_PATH" "/data/user/qt/qmlplugins"
"QTWEBENGINE_DISABLE_SANDBOX" "1"
"QT_GSTREAMER_CAMERABIN_VIDEOSRC" "mxc_v4l2=imxv4l2videosrc,v4l2src"
"QT_IM_MODULE" "qtvirtualkeyboard"
"QT_QPA_EGLFS_FORCEVSYNC" "1"
"QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS" "/dev/input/event0"
"QT_QUICK_CONTROLS_1_STYLE" "Flat"
"XDG_RUNTIME_DIR" "/run/user/0"
"/opt/DevProg/bin/DevProg" ()
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
Init. Connected to SWI Port
Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created.

@jsulm - We want to app to run on boot on an embedded version of Ubuntu running on a Toradex IM6

aha_1980

@dewsoft

@jsulm - We want to app to run on boot on an embedded version of Ubuntu running on a Toradex IM6

That still does not require to run the app as root neither deploying it into /root.

Do you have an user account on that Ubunto target system?

Regards

jsulm

@dewsoft said in Trouble using /root as the target directory on my embedded device.:

We want to app to run on boot

You can use systemd for that