Hi On Sat, Dec 13, 2014 at 5:34 PM, Léo Gillot-Lamure <leo.gil...@navaati.net> wrote: > Hi. > > I want to give ownership of a particular sound card to a specific user > permanently, so that 1/ I have a guarantee that other users' sessions > can not emit sound on this card and 2/ the sound playing on the > specific users' session does not stop when Ctrl+Alt+F<x>'ing to > another session (due to Pulse releasing the card after noticing the > ACL changed).
This is really not something we're going to support. You're free to make your system run like this, but I don't think any upstream will help you make it work. Anyway, see below.. > To this goal the straight approach was to write an udev rule stating : >> SUBSYSTEM=="sound", ATTRS{idVendor}=="08bb", ATTRS{idProduct}=="2705, >> OWNER="navaati" > But this was not enough, as the ACL rights were still dynamically > granted to the user when it had a front session on the seat. > > I then found out that the combination of this rule in 70-uaccess.rules : >> SUBSYSTEM=="sound", TAG+="uaccess" > and this rule in 73-seat-late.rules : >> TAG=="uaccess", ENV{MAJOR}!="", RUN{builtin}+="uaccess" > provoked the device to be ACL-managed (with udev talking to logind and stuff). > > Thus I changed my udev rule to >> SUBSYSTEM=="sound", ATTRS{idVendor}=="08bb", ATTRS{idProduct}=="2705, >> OWNER="navaati", TAG:="" > (the doc says that the := operator forbid any subsequent overriding of > the variable, and my rule file is ordered early starting with 01-) but > my soundcard devices still have ACL. > > Now I don't know what else to do or what mechanism is actually setting > these ACL... I don't think ":=" works for TAGS. Please try systemd-218 and use: TAG-="uaccess" in a 99- rule. Thanks David _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel