13.9. Single-application Mode

Procedure 13.9. Set Up Single-application Mode

1. Create the following files with the following content:
   • /usr/bin/redhat-kiosk

     #!/bin/sh
     
     if [ ! -e ~/.local/bin/redhat-kiosk ]; then
         mkdir -p ~/.local/bin ~/.config
         cat > ~/.local/bin/redhat-kiosk << EOF
     #!/bin/sh
     # This script is located in ~/.local/bin.
     # It's provided as an example script to show how
     # the kiosk session works.  At the moment, the script
     # just starts a text editor open to itself, but it
     # should get customized to instead start a full screen
     # application designed for the kiosk deployment.
     # The "while true" bit just makes sure the application gets
     # restarted if it dies for whatever reason.
     
     while true; do
         gedit ~/.local/bin/redhat-kiosk
     done
     
     EOF
     
         chmod +x ~/.local/bin/redhat-kiosk
         touch ~/.config/gnome-initial-setup-done
     fi
     
     exec ~/.local/bin/redhat-kiosk "$@"
     

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     Important

     The /usr/bin/redhat-kiosk file must be executable.
     Replace the gedit ~/.local/bin/redhat-kiosk code by the commands that you want to execute in the kiosk session. This example launches a full-screen application designed for the kiosk deployment named http://mine-kios-web-app:

     [...]
     while true; do
         firefox --kiosk http://mine-kios-web-app
     done
     [...]
     

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   • /usr/share/applications/com.redhat.Kiosk.Script.desktop

     [Desktop Entry]
     Name=Kiosk
     Type=Application
     Exec=redhat-kiosk
     

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   • /usr/share/applications/com.redhat.Kiosk.WindowManager.desktop

     [Desktop Entry]
     Type=Application
     Name=Mutter
     Comment=Window manager
     Exec=/usr/bin/mutter
     Categories=GNOME;GTK;Core;
     OnlyShowIn=GNOME;
     NoDisplay=true
     X-GNOME-Autostart-Phase=DisplayServer
     X-GNOME-Provides=windowmanager;
     X-GNOME-Autostart-Notify=true
     X-GNOME-AutoRestart=false
     X-GNOME-HiddenUnderSystemd=true
     

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   • /usr/share/gnome-session/sessions/redhat-kiosk.session

     [GNOME Session]
     Name=Kiosk
     RequiredComponents=com.redhat.Kiosk.WindowManager;com.redhat.Kiosk.Script;
     

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   • /usr/share/xsessions/com.redhat.Kiosk.desktop

     [Desktop Entry]
     Name=Kiosk
     Comment=Kiosk mode
     Exec=/usr/bin/gnome-session --session=redhat-kiosk
     DesktopNames=Red-Hat-Kiosk;GNOME;
     

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2. Restart the GDM service:

   systemctl restart gdm.service

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3. Create a separate user for the kiosk session and select Kiosk as the session type for the user of the kiosk session.
   

   View larger image

   

   Figure 13.1. Selecting the kiosk session