I tested a newer version of the patch that Michael sent me, and I verify that it works properly :-)
I'm attaching it here; it includes changes to the 1015_add_zsys_support.patch, but that's only as a result of a quilt refresh, since the patch did not apply cleanly anymore (since src/usermod.c was modified in our patch before). I've been testing this on Focal. ** Patch added: "Patch for focal" https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1959375/+attachment/5568568/+files/0001-Add-automatic-detection-of-extrausers-for-usermod-G.patch -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to shadow in Ubuntu. https://bugs.launchpad.net/bugs/1959375 Title: [SRU] Please support group manipulation with "extrausers" Status in shadow package in Ubuntu: New Status in shadow source package in Bionic: New Status in shadow source package in Focal: New Status in shadow source package in Impish: New Status in shadow source package in Jammy: New Bug description: Currently doing something like: sudo usermod -a -G snap_microk8s dbeamonte on a Ubuntu Core system will fail with usermod: /etc/group.15965: Read-only file system This is because the existing usermod patches to detect the extrausers file do not cover this case. Attached a simple patch that enables it. I will give this patch a test run in our image PPA for jammy and if things look good I would like upload to 22.04 and SRU for 20.04 and 18.04. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1959375/+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