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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1796808 Title: frontend locking regression: dpkg::post-invoke scripts can't install packages Status in apt package in Ubuntu: Fix Released Status in apt source package in Xenial: Fix Released Status in apt source package in Bionic: Fix Released Status in apt source package in Cosmic: Fix Released Bug description: [Impact] The switch to frontend locking in 1.2.28/1.6.5/1.7~ caused scripts registered in DPkg::Pre-Install-Pkgs DPkg::Pre-Invoke DPkg::Post-Invoke To be run with the frontend lock held. This caused problems with some installer packages like libdvd-pkg which install a locally built package in such a hook. To reduce the impact, a fix has been applied in 1.7.0 which exports the DPKG_FRONTEND_LOCKED variable when running those scripts, allowing dpkg to be run from those scripts. [Test case] Make sure that the test-frontend-lock test run by autopkgtest succeeds. This checks that: (1) the variable is correctly exported to those scripts (2) the frontend lock is still held (3) dpkg can be run from the post-invoke script [Regression potential] Depending on the script (for example, if the script starts a daemon manually or something like that), DPKG_FRONTEND_LOCKED might leak to other processes which might survive the apt call and thus revert surviving process to not using frontend locking. [Other info] This fix is for backwards compatibility only. Starting with the dd cycle, it will be dropped for the Pre-Install-Pkgs and Pre-Invoke scripts. Potentially for post-invoke as well, if we find a better solution for it. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1796808/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
