3 Replies
      Latest reply on Oct 12, 2019 1:37 AM by Hansaplast
      Hansaplast Level 1 Level 1 (0 points)

        I have an application that uses a PrivilegedHelper to read/write external disks (eg. backup or restore SD cards).

        This has been working great and reliable in Mojave.

        In Catalina (10.15, 19A573A) this no longer works and produces the error:

         

        Sandbox: (2301) System Policy: deny(1) file-write-data /dev/rdisk3

         

        I was under the assumption that one of the applications of a priviligedhelper tool is to actually have root access rights.

        Note: running my application with sudo does work, but obviously that is not the right way to do it.

         

        Is there anyone who would know how to resolve this issue?

        Any help would be greatly appreciated, as I have been unable to find proper documentation.

         

        Note: both application and helper tool are 64 bit, not sandboxed, signed, notarized (the DMG) and not distributed through the App Store.