GConf Configuration Sources
The GConf repository contains a series of storage locations that are called configuration
sources. The configuration sources are listed in the GConf path file. The location of the
GConf path file is /etc/gconf/version-number/path. Each user has a path file. Each
line in the path file specifies the following information:
■
The backend module to use to read the repository.
■
The permissions on the repository.
■
The location of the repository.
By default, the contents of the GConf path file are as follows:
xml:readonly:/etc/gconf/gconf.xml.mandatory
include "$(HOME)/.gconf.path"
xml:readwrite:$(HOME)/.gconf
xml:readonly:/etc/gconf/gconf.xml.defaults
When GConf searches for a preference value, GConf reads the configuration sources in
the order specified in the path file. The following table describes the configuration
sources in the path file:
Configuration Source Description
Mandatory The permissions on this configuration source are set to read
only. Users cannot overwrite the values in this source, so the
preferences in the source are mandatory.
User This configuration source is stored in the .gconf directory in
the home directory of the user. When the user sets a preference,
the new preference information is added to this location.
Default This configuration source contains the default preference
settings.
The sequence of the configuration sources in the path file ensures that mandatory
preference settings override user preference settings. The sequence also ensures that
user preference settings override default preference settings. That is, GConf applies
preferences in the following order of priority:
1. Mandatory preferences
2. User-specified preferences
3. Default preferences
The include instruction in the GConf path file enables users to use another
configuration source. To use another configuration source, the user must specify the
location of the configuration source. The user specifies the location of the
configuration source in the home directory, in a file that is called .gconf.path.
Chapter 1 • Using GConf 13
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