Hi Rafal! Can you please share the details as to where are we with gumd and security manager? Any idea about the timeline would be great.
BR imran ________________________________________ From: Dev [[email protected]] on behalf of Rafał Krypa [[email protected]] Sent: 27 October 2014 14:31 To: Jussi Laako; Le Foll, Dominique Cc: [email protected] Subject: Re: [Dev] Gumd and security-manager integration On 2014-10-16 14:39, Jussi Laako wrote: On 16.10.2014 11:43, Rafał Krypa wrote: Could you please describe this subject in detail? What problems did you encounter while considering integration by hooks? Why was it considered unfeasible? If similar problems could also affect integration with security-manager, I'd like to avoid them as early as possible. Conclusion was that it is impossible to perfectly roll-back hook actions in case of failure because the roll-back can also fail. If not for anything else but due to bugs in implementation. IMHO a perfect roll-back for operations like user creation and removal isn't that important. If some step during creation of a user fails (or is interrupted by power loss) it should be enough to leave the user in half-created state. Such half-created account should have the following characteristics: - cannot be utilized, prevent users from logging into it (this can be achieved by enabling the account in the very last step of the process) - can be enumerated and removed, like any proper user account - until removed, cannot be re-used by subsequent user creations Having that, a device administrator could recover from failed user creation by entering user management again, removing the half-baked account and trying to create it again. It is possible to handle user removal in a similar way. To be honest, in my proposal for wrapping gumd with security-manager functions I didn't intend to provide fully transactional removal and creation of users. I considered it too difficult and not worth it. And similarly, as far as i know there is no roll-back support for failed application installation (or de-installation or upgrade). Do we need to discuss it for applications as well? Dominig, if you have any concerns about my approach, please let us know. At the moment I don't see technical reasons for choosing gumd wrapping over hooks. Since hooks seem to be preferred by gumd developers and should be easier for all of us, they look like a viable option to me. Best regards, Rafal Krypa --------------------------------------------------------------------- Intel Finland Oy Registered Address: PL 281, 00181 Helsinki Business Identity Code: 0357606 - 4 Domiciled in Helsinki This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. _______________________________________________ Dev mailing list [email protected] https://lists.tizen.org/listinfo/dev
