1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 * Author: Alexander Larsson <alexl@redhat.com>
19 * David Zeuthen <davidz@redhat.com>
25 #include "gthemedicon.h"
26 #include "gasyncresult.h"
33 * @short_description: Drive management
36 * #GDrive - this represent a piece of hardware connected to the machine.
37 * It's generally only created for removable hardware or hardware with
40 * #GDrive is a container class for #GVolume objects that stem from
41 * the same piece of media. As such, #GDrive abstracts a drive with
42 * (or without) removable media and provides operations for querying
43 * whether media is available, determining whether media change is
44 * automatically detected and ejecting the media.
46 * If the #GDrive reports that media isn't automatically detected, one
47 * can poll for media; typically one should not do this periodically
48 * as a poll for media operation is potententially expensive and may
49 * spin up the drive creating noise.
51 * #GDrive supports starting and stopping drives with authentication
52 * support for the former. This can be used to support a diverse set
53 * of use cases including connecting/disconnecting iSCSI devices,
54 * powering down external disk enclosures and starting/stopping
55 * multi-disk devices such as RAID devices. Note that the actual
56 * semantics and side-effects of starting/stopping a #GDrive may vary
57 * according to implementation. To choose the correct verbs in e.g. a
58 * file manager, use g_drive_get_start_stop_type().
60 * For porting from GnomeVFS note that there is no equivalent of
61 * #GDrive in that API.
64 typedef GDriveIface GDriveInterface;
65 G_DEFINE_INTERFACE(GDrive, g_drive, G_TYPE_OBJECT)
68 g_drive_default_init (GDriveInterface *iface)
74 * Emitted when the drive's state has changed.
76 g_signal_new (I_("changed"),
79 G_STRUCT_OFFSET (GDriveIface, changed),
81 g_cclosure_marshal_VOID__VOID,
85 * GDrive::disconnected:
88 * This signal is emitted when the #GDrive have been
89 * disconnected. If the recipient is holding references to the
90 * object they should release them so the object can be
93 g_signal_new (I_("disconnected"),
96 G_STRUCT_OFFSET (GDriveIface, disconnected),
98 g_cclosure_marshal_VOID__VOID,
102 * GDrive::eject-button:
105 * Emitted when the physical eject button (if any) of a drive has
108 g_signal_new (I_("eject-button"),
111 G_STRUCT_OFFSET (GDriveIface, eject_button),
113 g_cclosure_marshal_VOID__VOID,
117 * GDrive::stop-button:
120 * Emitted when the physical stop button (if any) of a drive has
125 g_signal_new (I_("stop-button"),
128 G_STRUCT_OFFSET (GDriveIface, stop_button),
130 g_cclosure_marshal_VOID__VOID,
138 * Gets the name of @drive.
140 * Returns: a string containing @drive's name. The returned
141 * string should be freed when no longer needed.
144 g_drive_get_name (GDrive *drive)
148 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
150 iface = G_DRIVE_GET_IFACE (drive);
152 return (* iface->get_name) (drive);
159 * Gets the icon for @drive.
161 * Returns: (transfer full): #GIcon for the @drive.
162 * Free the returned object with g_object_unref().
165 g_drive_get_icon (GDrive *drive)
169 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
171 iface = G_DRIVE_GET_IFACE (drive);
173 return (* iface->get_icon) (drive);
177 * g_drive_get_symbolic_icon:
180 * Gets the icon for @drive.
182 * Returns: (transfer full): symbolic #GIcon for the @drive.
183 * Free the returned object with g_object_unref().
188 g_drive_get_symbolic_icon (GDrive *drive)
193 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
195 iface = G_DRIVE_GET_IFACE (drive);
197 if (iface->get_symbolic_icon != NULL)
198 ret = iface->get_symbolic_icon (drive);
200 ret = g_themed_icon_new_with_default_fallbacks ("drive-removable-media-symbolic");
206 * g_drive_has_volumes:
209 * Check if @drive has any mountable volumes.
211 * Returns: %TRUE if the @drive contains volumes, %FALSE otherwise.
214 g_drive_has_volumes (GDrive *drive)
218 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
220 iface = G_DRIVE_GET_IFACE (drive);
222 return (* iface->has_volumes) (drive);
226 * g_drive_get_volumes:
229 * Get a list of mountable volumes for @drive.
231 * The returned list should be freed with g_list_free(), after
232 * its elements have been unreffed with g_object_unref().
234 * Returns: (element-type GVolume) (transfer full): #GList containing any #GVolume objects on the given @drive.
237 g_drive_get_volumes (GDrive *drive)
241 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
243 iface = G_DRIVE_GET_IFACE (drive);
245 return (* iface->get_volumes) (drive);
249 * g_drive_is_media_check_automatic:
252 * Checks if @drive is capabable of automatically detecting media changes.
254 * Returns: %TRUE if the @drive is capabable of automatically detecting
255 * media changes, %FALSE otherwise.
258 g_drive_is_media_check_automatic (GDrive *drive)
262 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
264 iface = G_DRIVE_GET_IFACE (drive);
266 return (* iface->is_media_check_automatic) (drive);
270 * g_drive_is_media_removable:
273 * Checks if the @drive supports removable media.
275 * Returns: %TRUE if @drive supports removable media, %FALSE otherwise.
278 g_drive_is_media_removable (GDrive *drive)
282 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
284 iface = G_DRIVE_GET_IFACE (drive);
286 return (* iface->is_media_removable) (drive);
293 * Checks if the @drive has media. Note that the OS may not be polling
294 * the drive for media changes; see g_drive_is_media_check_automatic()
297 * Returns: %TRUE if @drive has media, %FALSE otherwise.
300 g_drive_has_media (GDrive *drive)
304 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
306 iface = G_DRIVE_GET_IFACE (drive);
308 return (* iface->has_media) (drive);
315 * Checks if a drive can be ejected.
317 * Returns: %TRUE if the @drive can be ejected, %FALSE otherwise.
320 g_drive_can_eject (GDrive *drive)
324 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
326 iface = G_DRIVE_GET_IFACE (drive);
328 if (iface->can_eject == NULL)
331 return (* iface->can_eject) (drive);
335 * g_drive_can_poll_for_media:
338 * Checks if a drive can be polled for media changes.
340 * Returns: %TRUE if the @drive can be polled for media changes,
344 g_drive_can_poll_for_media (GDrive *drive)
348 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
350 iface = G_DRIVE_GET_IFACE (drive);
352 if (iface->poll_for_media == NULL)
355 return (* iface->can_poll_for_media) (drive);
361 * @flags: flags affecting the unmount if required for eject
362 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
363 * @callback: (allow-none): a #GAsyncReadyCallback, or %NULL.
364 * @user_data: user data to pass to @callback
366 * Asynchronously ejects a drive.
368 * When the operation is finished, @callback will be called.
369 * You can then call g_drive_eject_finish() to obtain the
370 * result of the operation.
372 * Deprecated: 2.22: Use g_drive_eject_with_operation() instead.
375 g_drive_eject (GDrive *drive,
376 GMountUnmountFlags flags,
377 GCancellable *cancellable,
378 GAsyncReadyCallback callback,
383 g_return_if_fail (G_IS_DRIVE (drive));
385 iface = G_DRIVE_GET_IFACE (drive);
387 if (iface->eject == NULL)
389 g_task_report_new_error (drive, callback, user_data,
390 g_drive_eject_with_operation,
391 G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
392 _("drive doesn't implement eject"));
396 (* iface->eject) (drive, flags, cancellable, callback, user_data);
400 * g_drive_eject_finish:
402 * @result: a #GAsyncResult.
403 * @error: a #GError, or %NULL
405 * Finishes ejecting a drive.
407 * Returns: %TRUE if the drive has been ejected successfully,
410 * Deprecated: 2.22: Use g_drive_eject_with_operation_finish() instead.
413 g_drive_eject_finish (GDrive *drive,
414 GAsyncResult *result,
419 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
420 g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
422 if (g_async_result_legacy_propagate_error (result, error))
424 else if (g_async_result_is_tagged (result, g_drive_eject_with_operation))
425 return g_task_propagate_boolean (G_TASK (result), error);
427 iface = G_DRIVE_GET_IFACE (drive);
429 return (* iface->eject_finish) (drive, result, error);
433 * g_drive_eject_with_operation:
435 * @flags: flags affecting the unmount if required for eject
436 * @mount_operation: (allow-none): a #GMountOperation or %NULL to avoid
438 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
439 * @callback: (allow-none): a #GAsyncReadyCallback, or %NULL.
440 * @user_data: user data passed to @callback.
442 * Ejects a drive. This is an asynchronous operation, and is
443 * finished by calling g_drive_eject_with_operation_finish() with the @drive
444 * and #GAsyncResult data returned in the @callback.
449 g_drive_eject_with_operation (GDrive *drive,
450 GMountUnmountFlags flags,
451 GMountOperation *mount_operation,
452 GCancellable *cancellable,
453 GAsyncReadyCallback callback,
458 g_return_if_fail (G_IS_DRIVE (drive));
460 iface = G_DRIVE_GET_IFACE (drive);
462 if (iface->eject == NULL && iface->eject_with_operation == NULL)
464 g_task_report_new_error (drive, callback, user_data,
465 g_drive_eject_with_operation,
466 G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
467 /* Translators: This is an error
468 * message for drive objects that
469 * don't implement any of eject or eject_with_operation. */
470 _("drive doesn't implement eject or eject_with_operation"));
474 if (iface->eject_with_operation != NULL)
475 (* iface->eject_with_operation) (drive, flags, mount_operation, cancellable, callback, user_data);
477 (* iface->eject) (drive, flags, cancellable, callback, user_data);
481 * g_drive_eject_with_operation_finish:
483 * @result: a #GAsyncResult.
484 * @error: a #GError location to store the error occurring, or %NULL to
487 * Finishes ejecting a drive. If any errors occurred during the operation,
488 * @error will be set to contain the errors and %FALSE will be returned.
490 * Returns: %TRUE if the drive was successfully ejected. %FALSE otherwise.
495 g_drive_eject_with_operation_finish (GDrive *drive,
496 GAsyncResult *result,
501 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
502 g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
504 if (g_async_result_legacy_propagate_error (result, error))
506 else if (g_async_result_is_tagged (result, g_drive_eject_with_operation))
507 return g_task_propagate_boolean (G_TASK (result), error);
509 iface = G_DRIVE_GET_IFACE (drive);
510 if (iface->eject_with_operation_finish != NULL)
511 return (* iface->eject_with_operation_finish) (drive, result, error);
513 return (* iface->eject_finish) (drive, result, error);
517 * g_drive_poll_for_media:
519 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
520 * @callback: (allow-none): a #GAsyncReadyCallback, or %NULL.
521 * @user_data: user data to pass to @callback
523 * Asynchronously polls @drive to see if media has been inserted or removed.
525 * When the operation is finished, @callback will be called.
526 * You can then call g_drive_poll_for_media_finish() to obtain the
527 * result of the operation.
530 g_drive_poll_for_media (GDrive *drive,
531 GCancellable *cancellable,
532 GAsyncReadyCallback callback,
537 g_return_if_fail (G_IS_DRIVE (drive));
539 iface = G_DRIVE_GET_IFACE (drive);
541 if (iface->poll_for_media == NULL)
543 g_task_report_new_error (drive, callback, user_data,
544 g_drive_poll_for_media,
545 G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
546 _("drive doesn't implement polling for media"));
550 (* iface->poll_for_media) (drive, cancellable, callback, user_data);
554 * g_drive_poll_for_media_finish:
556 * @result: a #GAsyncResult.
557 * @error: a #GError, or %NULL
559 * Finishes an operation started with g_drive_poll_for_media() on a drive.
561 * Returns: %TRUE if the drive has been poll_for_mediaed successfully,
565 g_drive_poll_for_media_finish (GDrive *drive,
566 GAsyncResult *result,
571 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
572 g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
574 if (g_async_result_legacy_propagate_error (result, error))
576 else if (g_async_result_is_tagged (result, g_drive_poll_for_media))
577 return g_task_propagate_boolean (G_TASK (result), error);
579 iface = G_DRIVE_GET_IFACE (drive);
581 return (* iface->poll_for_media_finish) (drive, result, error);
585 * g_drive_get_identifier:
587 * @kind: the kind of identifier to return
589 * Gets the identifier of the given kind for @drive.
591 * Returns: a newly allocated string containing the
592 * requested identfier, or %NULL if the #GDrive
593 * doesn't have this kind of identifier.
596 g_drive_get_identifier (GDrive *drive,
601 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
602 g_return_val_if_fail (kind != NULL, NULL);
604 iface = G_DRIVE_GET_IFACE (drive);
606 if (iface->get_identifier == NULL)
609 return (* iface->get_identifier) (drive, kind);
613 * g_drive_enumerate_identifiers:
616 * Gets the kinds of identifiers that @drive has.
617 * Use g_drive_get_identifier() to obtain the identifiers
620 * Returns: (transfer full) (array zero-terminated=1): a %NULL-terminated
621 * array of strings containing kinds of identifiers. Use g_strfreev()
625 g_drive_enumerate_identifiers (GDrive *drive)
629 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
630 iface = G_DRIVE_GET_IFACE (drive);
632 if (iface->enumerate_identifiers == NULL)
635 return (* iface->enumerate_identifiers) (drive);
639 * g_drive_get_start_stop_type:
642 * Gets a hint about how a drive can be started/stopped.
644 * Returns: A value from the #GDriveStartStopType enumeration.
649 g_drive_get_start_stop_type (GDrive *drive)
653 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
655 iface = G_DRIVE_GET_IFACE (drive);
657 if (iface->get_start_stop_type == NULL)
658 return G_DRIVE_START_STOP_TYPE_UNKNOWN;
660 return (* iface->get_start_stop_type) (drive);
668 * Checks if a drive can be started.
670 * Returns: %TRUE if the @drive can be started, %FALSE otherwise.
675 g_drive_can_start (GDrive *drive)
679 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
681 iface = G_DRIVE_GET_IFACE (drive);
683 if (iface->can_start == NULL)
686 return (* iface->can_start) (drive);
690 * g_drive_can_start_degraded:
693 * Checks if a drive can be started degraded.
695 * Returns: %TRUE if the @drive can be started degraded, %FALSE otherwise.
700 g_drive_can_start_degraded (GDrive *drive)
704 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
706 iface = G_DRIVE_GET_IFACE (drive);
708 if (iface->can_start_degraded == NULL)
711 return (* iface->can_start_degraded) (drive);
717 * @flags: flags affecting the start operation.
718 * @mount_operation: (allow-none): a #GMountOperation or %NULL to avoid
720 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
721 * @callback: (allow-none): a #GAsyncReadyCallback, or %NULL.
722 * @user_data: user data to pass to @callback
724 * Asynchronously starts a drive.
726 * When the operation is finished, @callback will be called.
727 * You can then call g_drive_start_finish() to obtain the
728 * result of the operation.
733 g_drive_start (GDrive *drive,
734 GDriveStartFlags flags,
735 GMountOperation *mount_operation,
736 GCancellable *cancellable,
737 GAsyncReadyCallback callback,
742 g_return_if_fail (G_IS_DRIVE (drive));
744 iface = G_DRIVE_GET_IFACE (drive);
746 if (iface->start == NULL)
748 g_task_report_new_error (drive, callback, user_data,
750 G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
751 _("drive doesn't implement start"));
755 (* iface->start) (drive, flags, mount_operation, cancellable, callback, user_data);
759 * g_drive_start_finish:
761 * @result: a #GAsyncResult.
762 * @error: a #GError, or %NULL
764 * Finishes starting a drive.
766 * Returns: %TRUE if the drive has been started successfully,
772 g_drive_start_finish (GDrive *drive,
773 GAsyncResult *result,
778 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
779 g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
781 if (g_async_result_legacy_propagate_error (result, error))
783 else if (g_async_result_is_tagged (result, g_drive_start))
784 return g_task_propagate_boolean (G_TASK (result), error);
786 iface = G_DRIVE_GET_IFACE (drive);
788 return (* iface->start_finish) (drive, result, error);
795 * Checks if a drive can be stopped.
797 * Returns: %TRUE if the @drive can be stopped, %FALSE otherwise.
802 g_drive_can_stop (GDrive *drive)
806 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
808 iface = G_DRIVE_GET_IFACE (drive);
810 if (iface->can_stop == NULL)
813 return (* iface->can_stop) (drive);
819 * @flags: flags affecting the unmount if required for stopping.
820 * @mount_operation: (allow-none): a #GMountOperation or %NULL to avoid
822 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
823 * @callback: (allow-none): a #GAsyncReadyCallback, or %NULL.
824 * @user_data: user data to pass to @callback
826 * Asynchronously stops a drive.
828 * When the operation is finished, @callback will be called.
829 * You can then call g_drive_stop_finish() to obtain the
830 * result of the operation.
835 g_drive_stop (GDrive *drive,
836 GMountUnmountFlags flags,
837 GMountOperation *mount_operation,
838 GCancellable *cancellable,
839 GAsyncReadyCallback callback,
844 g_return_if_fail (G_IS_DRIVE (drive));
846 iface = G_DRIVE_GET_IFACE (drive);
848 if (iface->stop == NULL)
850 g_task_report_new_error (drive, callback, user_data,
852 G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
853 _("drive doesn't implement stop"));
857 (* iface->stop) (drive, flags, mount_operation, cancellable, callback, user_data);
861 * g_drive_stop_finish:
863 * @result: a #GAsyncResult.
864 * @error: a #GError, or %NULL
866 * Finishes stopping a drive.
868 * Returns: %TRUE if the drive has been stopped successfully,
874 g_drive_stop_finish (GDrive *drive,
875 GAsyncResult *result,
880 g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);
881 g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
883 if (g_async_result_legacy_propagate_error (result, error))
885 else if (g_async_result_is_tagged (result, g_drive_start))
886 return g_task_propagate_boolean (G_TASK (result), error);
888 iface = G_DRIVE_GET_IFACE (drive);
890 return (* iface->stop_finish) (drive, result, error);
894 * g_drive_get_sort_key:
897 * Gets the sort key for @drive, if any.
899 * Returns: Sorting key for @drive or %NULL if no such key is available.
904 g_drive_get_sort_key (GDrive *drive)
906 const gchar *ret = NULL;
909 g_return_val_if_fail (G_IS_DRIVE (drive), NULL);
911 iface = G_DRIVE_GET_IFACE (drive);
912 if (iface->get_sort_key != NULL)
913 ret = iface->get_sort_key (drive);