13.7. Locking Repartitioning
13.7. Locking Repartitioning polkit enables you to set permissions for individual operations. For udisks2 , the utility for disk management services, the configuration is located at /usr/share/polkit-1/actions/org.freedesktop.udisks2.policy . This file contains a set of actions and default values, which can be overridden by system administrator. Important Remember that polkit configuration stored in /etc overrides the configuration shipped by packages in /usr/share/ . Procedure 13.7. To Prevent Users from Changing Disks Settings Create a file with the same content as in /usr/share/polkit-1/actions/org.freedesktop.udisks2.policy . Do not change the /usr/share/polkit-1/actions/org.freedesktop.udisks2.policy file, your changes will be overwritten by the package update. Delete the action you do not need and add the following lines to the /etc/polkit-1/actions/org.freedesktop.udisks2.policy file: Replace no by auth_admin if you want to ensure only the root user is able to carry out the action. Save the changes. When the user tries to change the disks settings, the following message is returned:
cp /usr/share/polkit-1/actions/org.freedesktop.udisks2.policy /etc/share/polkit-1/actions/org.freedesktop.udisks2.policy <action id="org.freedesktop.udisks2.modify-device"> <message>Authentication is required to modify the disks settings</message> <defaults> <allow_any>no</allow_any> <allow_inactive>no</allow_inactive> <allow_active>yes</allow_active> </defaults> </action> Authentication is required to modify the disks settings