Description The GVolume interface represents user-visible objects that can be mounted. Note, when porting from GnomeVFS, GVolume is the moral equivalent of GnomeVFSDrive. Mounting a GVolume instance is an asynchronous operation. For more information about asynchronous operations, see GAsyncReady and GSimpleAsyncReady. To mount a GVolume, first call g_volume_mount() with (at least) the GVolume instance, optionally a GMountOperation object and a GAsyncReadyCallback. Typically, one will only want to pass NULL for the GMountOperation if automounting all volumes when a desktop session starts since it's not desirable to put up a lot of dialogs asking for credentials. The callback will be fired when the operation has resolved (either with success or failure), and a GAsyncReady structure will be passed to the callback. That callback should then call g_volume_mount_finish() with the GVolume instance and the GAsyncReady data to see if the operation was completed successfully. If an error is present when g_volume_mount_finish() is called, then it will be filled with any error information. It is sometimes necessary to directly access the underlying operating system object behind a volume (e.g. for passing a volume to an application via the commandline). For this purpose, GIO allows to obtain an 'identifier' for the volume. There can be different kinds of identifiers, such as Hal UDIs, filesystem labels, traditional Unix devices (e.g. /dev/sda2), uuids. GIO uses predefind strings as names for the different kinds of identifiers: G_VOLUME_IDENTIFIER_KIND_HAL_UDI, G_VOLUME_IDENTIFIER_KIND_LABEL, etc. Use g_volume_get_identifier() to obtain an identifier for a volume. Note that G_VOLUME_IDENTIFIER_KIND_HAL_UDI will only be available when the gvfs hal volume monitor is in use. Other volume monitors will generally be able to provide the G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE identifier, which can be used to obtain a hal device by means of libhal_manger_find_device_string_match().