Difference between revisions of "Spotlight"
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# cat .tracker_env
# cat .tracker_env
# . .tracker_env
# . .tracker_env
Revision as of 12:27, 17 March 2016
This page is meant to give an overview about compiling and configuring Samba with support for OS X Spotlight support.
Samba uses Gnome Tracker as search engine, search tool and metadata storage system.
First, you need the following packages installed: tracker and libtracker-sparql-dev, the exact name may be different on your system.
Next, configure samba with --enable-spotlight:
$ ./configure ... --enable-spotlight ... ... Checking for tracker-sparql-1.0 : not found Checking for tracker-sparql-0.16 : yes Checking for header tracker-sparql.h : yes Checking for library tracker-sparql-0.16 : yes Checking for library glib-2.0 : yes Checking for library gio-2.0 : yes Checking for library gobject-2.0 : yes building with Spotlight support ...
This is for Tracker version 1.0 or newer, for older version see below.
We need a small wrapper that will be used in DBUS service files and ensures this environment variable is always set for all tracker binaries:
#!/bin/sh TRACKER_BUS_TYPE=system /usr/libexec/$1
Saves this as
and don't forget to make it executable.
Create a user under which Tracker will run
For security reasons it is highly recommended to create a unprivileged user under which Tracker process will run:
# useradd -m mdssvc # passwd mdssvc
The user needs a home directory as Tracker stores its database and configuration inside the users home directory.
Tracker will run as this user when crawling and indexing filesystems, so permissions on filesystems must grant read access to this user as desired.
Tracker doesn't provide a dbus config file for running as a system service yet, so here is one: Tracker Config File. Thanks Martyn!
This file must be saved as
dbus Service Files
Grab Tracker DBUS service files from [Tracker DBUS Service Files] and save them in:
Start Tracker as a special System Service with systemd
Grab the systemd unit files for tracker from [Tracker Systemd Unit Files] and save them in:
Now enable the services:
# systemctl enable system-tracker-store # systemctl enable system-tracker-extract # systemctl enable system-tracker-miner-fs
Configuring which Paths to index in Tracker
If you can do a graphical login, depending on the OS the GUI may offer to configure which paths to index.
Login as the user mdssvc and eg on Fedora launch Settings and then goto Search.
Tracker uses Gnome GSettings which mean settings are stored in the user's home directory. Changing settings can be done by running the command gsettings, but this requires a user dbus session to be active:
# su - mdssvc mdssvc$ dbus-launch --sh-syntax > .dbus_settings mdssvc $ . .dbus_settings
Once you have sourced .dbus_settings you can run gsettings command:
mdssvc $ . .dbus_settings mdssvc $ gsettings list-recursively | grep Tracker org.freedesktop.Tracker.DB journal-chunk-size 50 org.freedesktop.Tracker.DB journal-rotate-destination '' ... org.freedesktop.Tracker.Extract wait-for-miner-fs false mdssvc $ gsettings set org.freedesktop.Tracker.Miner.Files index-recursive-directories "['/Volumes/spotlight']" mdssvc $
mdssvc$ export TRACKER_BUS_TYPE="system" mdssvc$ /opt/tracker/libexec/tracker-store -v 3 ...
You can run the Spotlight RPC service mdssvc either as an embedded service or as separate RPC daemon by enabling the mdssd RPC daemon:
[global] .... rpc_server:mdssvc = embedded ....
[global] .... rpc_daemon:mdssd = fork rpc_server:mdssvc = external ....
Finally enable Spotlight searching on a per share basis:
[share] path = /some/path spotlight = yes
Tracker versions older then 1.0.0
Tracker uses DBUS for IPC between Tracker processes and processes that want to run queries against the Tracker metadata store. Therefor you have to carefully start Samba, a dbus-daemon instance and Tracker ensuring all processes are then able to communicate with each other over the correct DBUS bus: Samba Spotlight Start Script. The magic that makes this work is the environment variable DBUS_SESSION_BUS_ADDRESS.
The dbus-daemon that is started from the script need its config file with a matching DBUS session address, here's an example: Spotlight DBUS Configuration File.
Another point to keep in mind is the location where Tracker stores its config and database. Tracker was developed with a per-user use case in mind, as such configuration and data is put in locations relative to the users home directory of the uid of the Tracker processes. By changing the value of the HOME environment variable (a more fine grained approach is modifying the environment variables of the XDG basedir specification).
Configuring Tracker and using Tracker tools
In order to use Tracker commandline tools, you have to run a root shell and source these shell commands:
# cat .tracker_env INSTALLDIR=/opt/samba export DBUS_SESSION_BUS_ADDRESS="unix:path=$INSTALLDIR/var/run/spotlight.ipc" # . .tracker_env #
Now you can tell Tracker which directories to index:
# gsettings set org.freedesktop.Tracker.Miner.Files index-recursive-directories "['/Volumes/spotlight']"