Hi Philip Am 02.01.2014 um 10:20 schrieb Philip Van Hoof <phi...@codeminded.be>:
> Signierter PGP Teil > Ralph Böhme schreef op 2/01/2014 9:49: > > Hi > > > > fishing for responses, so here it goes again... :) > > > > Am 16.12.2013 um 18:36 schrieb Ralph Böhme <r...@netafp.com>: > >> I'm looking into integrating Apple Spotlight support for Mac OS X > >> clients to Samba. > >> > >> In order to simplify the design I had chosen for Netatalk (launch > >> my own dbus daemon in _root_ user context, seteuid(0) in user > >> context AFP fileserver processes before every libtracker-sparql > >> function call) I wanted the check back with you guys whether a > >> patch for Tracker that would a (run-time) option to run Tracker > >> in the system dbus context would be acceptable for you. > >> > >> I haven't looked at the relevant code yet, but I suppose this may > >> actually be only a few lines of new code for the option and a few > >> changes where we open the dbus bus via dbus-glib (afair) API. > > Via Vala's D-Bus support we use GLib's GDBus (on both sides). For read > queries depending on access level to meta.db we use SQLite WAL journal > for a direct connection with the meta.db. > > Relevant files: > > https://git.gnome.org/browse/tracker/tree/src/libtracker-sparql-backend/tracker-backend.vala > https://git.gnome.org/browse/tracker/tree/src/libtracker-sparql > > > https://git.gnome.org/browse/tracker/tree/src/libtracker-bus/tracker-bus-fd-cursor.vala > > https://git.gnome.org/browse/tracker/tree/src/libtracker-bus/tracker-bus.vala > > https://git.gnome.org/browse/tracker/tree/src/tracker-store/tracker-dbus.vala > > https://git.gnome.org/browse/tracker/tree/src/tracker-store/tracker-steroids.vala > > https://git.gnome.org/browse/tracker/tree/src/tracker-store/tracker-resources.vala Thanks for the pointers. > > > > I was just trying to ask, supposed I submit proper patches that > > would allow changing the default behaviour as described, would > > these patches be acceptible? There's no sense in maintaining this > > stuff downstream, because of the need to enable any downstream > > consumer who wants to marry Samba with Tracker (distros, OEMs) to > > do so using the default packages. > > I think your seteuid() to drop to the user-ID from root should be > called from your code rather than in libtracker-sparql. I think you misunderstood what I was trying to describe. I seteiud() to root in the application before calling tracker-sparql stuff, because I'm launching a private dbus in the root user context which is then starting Tracker daemons in root user context. <https://github.com/Netatalk/Netatalk/blob/develop/etc/spotlight/slmod_sparql.c#L74> The application process normally runs uid=0,euid=some-uid. In order to be able to talk to Tracker via dbus, which are both running in root user context, I seteuid(0) and back when using tracker-sparql stuff. I must run Tracker as root, because I must be able to index a _shared_ ressource, ie all files of a fileserver (currently AFP/Netatalk, in the future SMB/Samba). Trackers is apperently designed for a single user context, not for use a general purpose indexer on a server that shares ressources with clients by means of filehsharing protocols like SMB, AFP or NFS. > Is there a reason why libtracker-sparql must be adapted? The whole Tracker design must be updated to optionally allow running Tracker in dbus system context, not in user context. -Ralph
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