Dimitri John Ledkov wrote on 08/01/15 17:48: > On 8 January 2015 at 17:15, Andrei Borzenkov <arvidj...@gmail.com> wrote: >> В Thu, 8 Jan 2015 16:03:43 +0000 >> Dimitri John Ledkov <dimitri.j.led...@intel.com> пишет: >> >>> On 8 January 2015 at 15:37, Simon McVittie >>> <simon.mcvit...@collabora.co.uk> wrote: >>>> On 08/01/15 14:36, Colin Guthrie wrote: >>>>> Lennart Poettering wrote on 08/01/15 13:19: >>> Thus my expectation would be to have a systemd (dbus, etc...) --user >>> per-session/per-seat, rather than per-uid. >>> >> >> How do you manage things that are inherently per-user and not >> per-session (like pulse audio, ssh-/gpg-agents)? > > E.g. ssh-/gpg-agents -> they are upstart jobs, and thus are started > per-session. They use environment variables to point at the active > agent. > > Even on your desktop, you can spawn two agents and use different > SSH_AUTH_SOCK to talk to one or the other. > > Ideally such variables could be eliminated in favor of using address > namespacing e.g. always talk to unix:abstract=/tmp/agent -> which is > then point at different things in each of the logind sessions, or > same, or whatever as needed depending on the desired model of > per-users/per-session/per-user-session of behaviour.
You don't really need to use abstract sockets here, you can use known socket paths in $XDG_RUNTIME_DIR these days as we can rely on it. As pam_systemd will set XDG_RUNTIME_DIR to /run/user/$UID/ we can easily just mandate that ssh agent is always on /run/user/$UID/ssh-agent socket, and forgo any env vars. We can also then teach ssh-agent to be socket activatable, and then simply write ssh-agent.socket and ssh-agent.service systemd units accordingly and it will be autolaunched by systemd on-demand. Teach it to exit after a timeout and it'll quit and save resources when not needed too. This is likely the way forward IMO. Ditto for gpg-agent. (this isn't really different to what you say in principle, just a little detail about the implementation) :) Col -- Colin Guthrie gmane(at)colin.guthr.ie http://colin.guthr.ie/ Day Job: Tribalogic Limited http://www.tribalogic.net/ Open Source: Mageia Contributor http://www.mageia.org/ PulseAudio Hacker http://www.pulseaudio.org/ Trac Hacker http://trac.edgewall.org/ _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
