g_keyfile_settings_backend_new (
  const gchar* filename,
  const gchar* root_path,
  const gchar* root_group


Creates a keyfile-backed GSettingsBackend.

The filename of the keyfile to use is given by filename.

All settings read to or written from the backend must fall under the path given in root_path (which must start and end with a slash and not contain two consecutive slashes). root_path may be “/”.

If root_group is non-NULL then it specifies the name of the keyfile group used for keys that are written directly below root_path. For example, if root_path is “/apps/example/” and root_group is “toplevel”, then settings the key “/apps/example/enabled” to a value of TRUE will cause the following to appear in the keyfile:


If root_group is NULL then it is not permitted to store keys directly below the root_path.

For keys not stored directly below root_path (ie: in a sub-path), the name of the subpath (with the final slash stripped) is used as the name of the keyfile group. To continue the example, if “/apps/example/profiles/default/font-size” were set to 12 then the following would appear in the keyfile:


The backend will refuse writes (and return writability as being FALSE) for keys outside of root_path and, in the event that root_group is NULL, also for keys directly under root_path. Writes will also be refused if the backend detects that it has the inability to rewrite the keyfile (ie: the containing directory is not writable).

There is no checking done for your key namespace clashing with the syntax of the key file format. For example, if you have ‘[‘ or ‘]’ characters in your path names or ‘=’ in your key names you may be in trouble.

The backend reads default values from a keyfile called defaults in the directory specified by the GKeyfileSettingsBackend:defaults-dir property, and a list of locked keys from a text file with the name locks in the same location.


filename const gchar*

The filename of the keyfile.

 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.
root_path const gchar*

The path under which all settings keys appear.

 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.
root_group const gchar*

The group name corresponding to root_path, or NULL.

 The argument can be NULL.
 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.

Return value

Returns: GSettingsBackend

A keyfile-backed GSettingsBackend.

 The caller of the function takes ownership of the data, and is responsible for freeing it.