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646 lines
18 KiB
C
646 lines
18 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2006-2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Alexander Larsson <alexl@redhat.com>
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* David Zeuthen <davidz@redhat.com>
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*/
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#include "config.h"
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#include "gmount.h"
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#include "gvolume.h"
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#include "gasyncresult.h"
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#include "gsimpleasyncresult.h"
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#include "gioerror.h"
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#include "glibintl.h"
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#include "gioalias.h"
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/**
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* SECTION:gvolume
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* @short_description: Volume management
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* @include: gio/gio.h
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*
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* The #GVolume interface represents user-visible objects that can be
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* mounted. Note, when porting from GnomeVFS, #GVolume is the moral
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* equivalent of #GnomeVFSDrive.
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*
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* Mounting a #GVolume instance is an asynchronous operation. For more
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* information about asynchronous operations, see #GAsyncReady and
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* #GSimpleAsyncReady. To mount a #GVolume, first call
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* g_volume_mount() with (at least) the #GVolume instance, optionally
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* a #GMountOperation object and a #GAsyncReadyCallback.
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*
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* Typically, one will only want to pass %NULL for the
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* #GMountOperation if automounting all volumes when a desktop session
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* starts since it's not desirable to put up a lot of dialogs asking
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* for credentials.
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*
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* The callback will be fired when the operation has resolved (either
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* with success or failure), and a #GAsyncReady structure will be
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* passed to the callback. That callback should then call
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* g_volume_mount_finish() with the #GVolume instance and the
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* #GAsyncReady data to see if the operation was completed
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* successfully. If an @error is present when g_volume_mount_finish()
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* is called, then it will be filled with any error information.
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*
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* <para id="volume-identifier">
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* It is sometimes necessary to directly access the underlying
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* operating system object behind a volume (e.g. for passing a volume
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* to an application via the commandline). For this purpose, GIO
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* allows to obtain an 'identifier' for the volume. There can be
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* different kinds of identifiers, such as Hal UDIs, filesystem labels,
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* traditional Unix devices (e.g. <filename>/dev/sda2</filename>),
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* uuids. GIO uses predefind strings as names for the different kinds
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* of identifiers: #G_VOLUME_IDENTIFIER_KIND_HAL_UDI,
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* #G_VOLUME_IDENTIFIER_KIND_LABEL, etc. Use g_volume_get_identifier()
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* to obtain an identifier for a volume.
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* </para>
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*
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* Note that #G_VOLUME_IDENTIFIER_KIND_HAL_UDI will only be available
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* when the gvfs hal volume monitor is in use. Other volume monitors
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* will generally be able to provide the #G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE
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* identifier, which can be used to obtain a hal device by means of
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* libhal_manger_find_device_string_match().
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*/
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typedef GVolumeIface GVolumeInterface;
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G_DEFINE_INTERFACE(GVolume, g_volume, G_TYPE_OBJECT)
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static void
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g_volume_default_init (GVolumeInterface *iface)
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{
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/**
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* GVolume::changed:
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*
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* Emitted when the volume has been changed.
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**/
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g_signal_new (I_("changed"),
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G_TYPE_VOLUME,
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GVolumeIface, changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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/**
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* GVolume::removed:
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*
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* This signal is emitted when the #GVolume have been removed. If
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* the recipient is holding references to the object they should
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* release them so the object can be finalized.
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**/
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g_signal_new (I_("removed"),
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G_TYPE_VOLUME,
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GVolumeIface, removed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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/**
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* g_volume_get_name:
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* @volume: a #GVolume.
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*
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* Gets the name of @volume.
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*
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* Returns: the name for the given @volume. The returned string should
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* be freed with g_free() when no longer needed.
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**/
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char *
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g_volume_get_name (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->get_name) (volume);
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}
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/**
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* g_volume_get_icon:
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* @volume: a #GVolume.
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*
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* Gets the icon for @volume.
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*
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* Returns: (transfer full): a #GIcon.
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* The returned object should be unreffed with g_object_unref()
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* when no longer needed.
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**/
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GIcon *
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g_volume_get_icon (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->get_icon) (volume);
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}
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/**
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* g_volume_get_uuid:
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* @volume: a #GVolume.
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*
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* Gets the UUID for the @volume. The reference is typically based on
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* the file system UUID for the volume in question and should be
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* considered an opaque string. Returns %NULL if there is no UUID
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* available.
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*
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* Returns: the UUID for @volume or %NULL if no UUID can be computed.
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* The returned string should be freed with g_free()
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* when no longer needed.
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**/
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char *
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g_volume_get_uuid (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->get_uuid) (volume);
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}
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/**
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* g_volume_get_drive:
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* @volume: a #GVolume.
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*
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* Gets the drive for the @volume.
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*
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* Returns: (transfer full): a #GDrive or %NULL if @volume is not associated with a drive.
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* The returned object should be unreffed with g_object_unref()
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* when no longer needed.
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**/
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GDrive *
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g_volume_get_drive (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->get_drive) (volume);
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}
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/**
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* g_volume_get_mount:
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* @volume: a #GVolume.
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*
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* Gets the mount for the @volume.
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*
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* Returns: (transfer full): a #GMount or %NULL if @volume isn't mounted.
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* The returned object should be unreffed with g_object_unref()
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* when no longer needed.
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**/
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GMount *
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g_volume_get_mount (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->get_mount) (volume);
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}
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/**
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* g_volume_can_mount:
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* @volume: a #GVolume.
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*
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* Checks if a volume can be mounted.
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*
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* Returns: %TRUE if the @volume can be mounted. %FALSE otherwise.
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**/
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gboolean
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g_volume_can_mount (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
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iface = G_VOLUME_GET_IFACE (volume);
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if (iface->can_mount == NULL)
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return FALSE;
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return (* iface->can_mount) (volume);
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}
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/**
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* g_volume_can_eject:
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* @volume: a #GVolume.
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*
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* Checks if a volume can be ejected.
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*
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* Returns: %TRUE if the @volume can be ejected. %FALSE otherwise.
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**/
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gboolean
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g_volume_can_eject (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
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iface = G_VOLUME_GET_IFACE (volume);
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if (iface->can_eject == NULL)
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return FALSE;
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return (* iface->can_eject) (volume);
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}
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/**
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* g_volume_should_automount:
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* @volume: a #GVolume
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*
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* Returns whether the volume should be automatically mounted.
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*
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* Returns: %TRUE if the volume should be automatically mounted.
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*/
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gboolean
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g_volume_should_automount (GVolume *volume)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
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iface = G_VOLUME_GET_IFACE (volume);
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if (iface->should_automount == NULL)
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return FALSE;
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return (* iface->should_automount) (volume);
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}
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/**
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* g_volume_mount:
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* @volume: a #GVolume.
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* @flags: flags affecting the operation
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* @mount_operation: (allow-none): a #GMountOperation or %NULL to avoid user interaction.
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* @cancellable: optional #GCancellable object, %NULL to ignore.
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* @callback: a #GAsyncReadyCallback, or %NULL.
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* @user_data: user data that gets passed to @callback
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*
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* Mounts a volume. This is an asynchronous operation, and is
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* finished by calling g_volume_mount_finish() with the @volume
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* and #GAsyncResult returned in the @callback.
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**/
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void
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g_volume_mount (GVolume *volume,
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GMountMountFlags flags,
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GMountOperation *mount_operation,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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GVolumeIface *iface;
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g_return_if_fail (G_IS_VOLUME (volume));
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iface = G_VOLUME_GET_IFACE (volume);
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if (iface->mount_fn == NULL)
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{
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g_simple_async_report_error_in_idle (G_OBJECT (volume), callback, user_data,
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G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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_("volume doesn't implement mount"));
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return;
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}
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(* iface->mount_fn) (volume, flags, mount_operation, cancellable, callback, user_data);
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}
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/**
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* g_volume_mount_finish:
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* @volume: a #GVolume
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* @result: a #GAsyncResult
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* @error: a #GError location to store an error, or %NULL to ignore
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*
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* Finishes mounting a volume. If any errors occured during the operation,
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* @error will be set to contain the errors and %FALSE will be returned.
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*
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* If the mount operation succeeded, g_volume_get_mount() on @volume
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* is guaranteed to return the mount right after calling this
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* function; there's no need to listen for the 'mount-added' signal on
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* #GVolumeMonitor.
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*
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* Returns: %TRUE, %FALSE if operation failed.
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**/
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gboolean
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g_volume_mount_finish (GVolume *volume,
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GAsyncResult *result,
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GError **error)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
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g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
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if (G_IS_SIMPLE_ASYNC_RESULT (result))
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{
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GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
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if (g_simple_async_result_propagate_error (simple, error))
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return FALSE;
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}
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->mount_finish) (volume, result, error);
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}
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/**
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* g_volume_eject:
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* @volume: a #GVolume.
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* @flags: flags affecting the unmount if required for eject
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* @cancellable: optional #GCancellable object, %NULL to ignore.
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* @callback: a #GAsyncReadyCallback, or %NULL.
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* @user_data: user data that gets passed to @callback
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*
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* Ejects a volume. This is an asynchronous operation, and is
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* finished by calling g_volume_eject_finish() with the @volume
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* and #GAsyncResult returned in the @callback.
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*
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* Deprecated: 2.22: Use g_volume_eject_with_operation() instead.
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**/
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void
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g_volume_eject (GVolume *volume,
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GMountUnmountFlags flags,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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GVolumeIface *iface;
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g_return_if_fail (G_IS_VOLUME (volume));
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iface = G_VOLUME_GET_IFACE (volume);
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if (iface->eject == NULL)
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{
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g_simple_async_report_error_in_idle (G_OBJECT (volume), callback, user_data,
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G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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_("volume doesn't implement eject"));
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return;
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}
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(* iface->eject) (volume, flags, cancellable, callback, user_data);
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}
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/**
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* g_volume_eject_finish:
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* @volume: pointer to a #GVolume.
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* @result: a #GAsyncResult.
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* @error: a #GError location to store an error, or %NULL to ignore
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*
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* Finishes ejecting a volume. If any errors occured during the operation,
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* @error will be set to contain the errors and %FALSE will be returned.
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*
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* Returns: %TRUE, %FALSE if operation failed.
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*
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* Deprecated: 2.22: Use g_volume_eject_with_operation_finish() instead.
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**/
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gboolean
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g_volume_eject_finish (GVolume *volume,
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GAsyncResult *result,
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GError **error)
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{
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GVolumeIface *iface;
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g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
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g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
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if (G_IS_SIMPLE_ASYNC_RESULT (result))
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{
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GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
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if (g_simple_async_result_propagate_error (simple, error))
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return FALSE;
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}
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iface = G_VOLUME_GET_IFACE (volume);
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return (* iface->eject_finish) (volume, result, error);
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}
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/**
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* g_volume_eject_with_operation:
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* @volume: a #GVolume.
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* @flags: flags affecting the unmount if required for eject
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* @mount_operation: a #GMountOperation or %NULL to avoid user interaction.
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* @cancellable: optional #GCancellable object, %NULL to ignore.
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* @callback: a #GAsyncReadyCallback, or %NULL.
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* @user_data: user data passed to @callback.
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*
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* Ejects a volume. This is an asynchronous operation, and is
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* finished by calling g_volume_eject_with_operation_finish() with the @volume
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* and #GAsyncResult data returned in the @callback.
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*
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* Since: 2.22
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**/
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void
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g_volume_eject_with_operation (GVolume *volume,
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GMountUnmountFlags flags,
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GMountOperation *mount_operation,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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GVolumeIface *iface;
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g_return_if_fail (G_IS_VOLUME (volume));
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iface = G_VOLUME_GET_IFACE (volume);
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if (iface->eject == NULL && iface->eject_with_operation == NULL)
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{
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g_simple_async_report_error_in_idle (G_OBJECT (volume),
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callback, user_data,
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G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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/* Translators: This is an error
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* message for volume objects that
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* don't implement any of eject or eject_with_operation. */
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_("volume doesn't implement eject or eject_with_operation"));
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return;
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}
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if (iface->eject_with_operation != NULL)
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(* iface->eject_with_operation) (volume, flags, mount_operation, cancellable, callback, user_data);
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else
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(* iface->eject) (volume, flags, cancellable, callback, user_data);
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}
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/**
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* g_volume_eject_with_operation_finish:
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* @volume: a #GVolume.
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* @result: a #GAsyncResult.
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* @error: a #GError location to store the error occuring, or %NULL to
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* ignore.
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*
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* Finishes ejecting a volume. If any errors occurred during the operation,
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* @error will be set to contain the errors and %FALSE will be returned.
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*
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* Returns: %TRUE if the volume was successfully ejected. %FALSE otherwise.
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*
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* Since: 2.22
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**/
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gboolean
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g_volume_eject_with_operation_finish (GVolume *volume,
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GAsyncResult *result,
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GError **error)
|
|
{
|
|
GVolumeIface *iface;
|
|
|
|
g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
|
|
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
|
|
|
|
if (G_IS_SIMPLE_ASYNC_RESULT (result))
|
|
{
|
|
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
|
|
if (g_simple_async_result_propagate_error (simple, error))
|
|
return FALSE;
|
|
}
|
|
|
|
iface = G_VOLUME_GET_IFACE (volume);
|
|
if (iface->eject_with_operation_finish != NULL)
|
|
return (* iface->eject_with_operation_finish) (volume, result, error);
|
|
else
|
|
return (* iface->eject_finish) (volume, result, error);
|
|
}
|
|
|
|
/**
|
|
* g_volume_get_identifier:
|
|
* @volume: a #GVolume
|
|
* @kind: the kind of identifier to return
|
|
*
|
|
* Gets the identifier of the given kind for @volume.
|
|
* See the <link linkend="volume-identifier">introduction</link>
|
|
* for more information about volume identifiers.
|
|
*
|
|
* Returns: a newly allocated string containing the
|
|
* requested identfier, or %NULL if the #GVolume
|
|
* doesn't have this kind of identifier
|
|
*/
|
|
char *
|
|
g_volume_get_identifier (GVolume *volume,
|
|
const char *kind)
|
|
{
|
|
GVolumeIface *iface;
|
|
|
|
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
|
|
g_return_val_if_fail (kind != NULL, NULL);
|
|
|
|
iface = G_VOLUME_GET_IFACE (volume);
|
|
|
|
if (iface->get_identifier == NULL)
|
|
return NULL;
|
|
|
|
return (* iface->get_identifier) (volume, kind);
|
|
}
|
|
|
|
/**
|
|
* g_volume_enumerate_identifiers:
|
|
* @volume: a #GVolume
|
|
*
|
|
* Gets the kinds of <link linkend="volume-identifier">identifiers</link>
|
|
* that @volume has. Use g_volume_get_identifer() to obtain
|
|
* the identifiers themselves.
|
|
*
|
|
* Returns: a %NULL-terminated array of strings containing
|
|
* kinds of identifiers. Use g_strfreev() to free.
|
|
*/
|
|
char **
|
|
g_volume_enumerate_identifiers (GVolume *volume)
|
|
{
|
|
GVolumeIface *iface;
|
|
|
|
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
|
|
iface = G_VOLUME_GET_IFACE (volume);
|
|
|
|
if (iface->enumerate_identifiers == NULL)
|
|
return NULL;
|
|
|
|
return (* iface->enumerate_identifiers) (volume);
|
|
}
|
|
|
|
/**
|
|
* g_volume_get_activation_root:
|
|
* @volume: a #GVolume
|
|
*
|
|
* Gets the activation root for a #GVolume if it is known ahead of
|
|
* mount time. Returns %NULL otherwise. If not %NULL and if @volume
|
|
* is mounted, then the result of g_mount_get_root() on the
|
|
* #GMount object obtained from g_volume_get_mount() will always
|
|
* either be equal or a prefix of what this function returns. In
|
|
* other words, in code
|
|
*
|
|
* <programlisting>
|
|
* GMount *mount;
|
|
* GFile *mount_root
|
|
* GFile *volume_activation_root;
|
|
*
|
|
* mount = g_volume_get_mount (volume); /* mounted, so never NULL */
|
|
* mount_root = g_mount_get_root (mount);
|
|
* volume_activation_root = g_volume_get_activation_root(volume); /* assume not NULL */
|
|
* </programlisting>
|
|
*
|
|
* then the expression
|
|
*
|
|
* <programlisting>
|
|
* (g_file_has_prefix (volume_activation_root, mount_root) ||
|
|
g_file_equal (volume_activation_root, mount_root))
|
|
* </programlisting>
|
|
*
|
|
* will always be %TRUE.
|
|
*
|
|
* Activation roots are typically used in #GVolumeMonitor
|
|
* implementations to find the underlying mount to shadow, see
|
|
* g_mount_is_shadowed() for more details.
|
|
*
|
|
* Returns: the activation root of @volume or %NULL. Use
|
|
* g_object_unref() to free.
|
|
*
|
|
* Since: 2.18
|
|
**/
|
|
GFile *
|
|
g_volume_get_activation_root (GVolume *volume)
|
|
{
|
|
GVolumeIface *iface;
|
|
|
|
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
|
|
iface = G_VOLUME_GET_IFACE (volume);
|
|
|
|
if (iface->get_activation_root == NULL)
|
|
return NULL;
|
|
|
|
return (* iface->get_activation_root) (volume);
|
|
}
|
|
|
|
|
|
|
|
#define __G_VOLUME_C__
|
|
#include "gioaliasdef.c"
|