/* GIO - GLib Input, Output and Streaming Library

 * 

 * Copyright (C) 2006-2007 Red Hat, Inc.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General

 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.

 *

 * Author: Alexander Larsson <alexl@redhat.com>

 *         David Zeuthen <davidz@redhat.com>

 */

#include "config.h"

#include "gdrive.h"

#include "gtask.h"

#include "gthemedicon.h"

#include "gasyncresult.h"

#include "gioerror.h"

#include "glibintl.h"

/**

 * SECTION:gdrive

 * @short_description: Drive management

 * @include: gio/gio.h

 *

 * #GDrive - this represent a piece of hardware connected to the machine.

 * It's generally only created for removable hardware or hardware with

 * removable media.

 *

 * #GDrive is a container class for #GVolume objects that stem from

 * the same piece of media. As such, #GDrive abstracts a drive with

 * (or without) removable media and provides operations for querying

 * whether media is available, determining whether media change is

 * automatically detected and ejecting the media.

 *

 * If the #GDrive reports that media isn't automatically detected, one

 * can poll for media; typically one should not do this periodically

 * as a poll for media operation is potententially expensive and may

 * spin up the drive creating noise.

 *

 * #GDrive supports starting and stopping drives with authentication

 * support for the former. This can be used to support a diverse set

 * of use cases including connecting/disconnecting iSCSI devices,

 * powering down external disk enclosures and starting/stopping

 * multi-disk devices such as RAID devices. Note that the actual

 * semantics and side-effects of starting/stopping a #GDrive may vary

 * according to implementation. To choose the correct verbs in e.g. a

 * file manager, use g_drive_get_start_stop_type().

 *

 * For porting from GnomeVFS note that there is no equivalent of

 * #GDrive in that API.

 **/

typedef GDriveIface GDriveInterface;

G_DEFINE_INTERFACE(GDrive, g_drive, G_TYPE_OBJECT)

static void

g_drive_default_init (GDriveInterface *iface)

{

  /**

   * GDrive::changed:

   * @drive: a #GDrive.

   *

   * Emitted when the drive's state has changed.

   **/

  g_signal_new (I_("changed"),

		G_TYPE_DRIVE,

		G_SIGNAL_RUN_LAST,

		G_STRUCT_OFFSET (GDriveIface, changed),

		NULL, NULL,

		g_cclosure_marshal_VOID__VOID,

		G_TYPE_NONE, 0);

  /**

   * GDrive::disconnected:

   * @drive: a #GDrive.

   *

   * This signal is emitted when the #GDrive have been

   * disconnected. If the recipient is holding references to the

   * object they should release them so the object can be

   * finalized.

   **/

  g_signal_new (I_("disconnected"),

		G_TYPE_DRIVE,

		G_SIGNAL_RUN_LAST,

		G_STRUCT_OFFSET (GDriveIface, disconnected),

		NULL, NULL,

		g_cclosure_marshal_VOID__VOID,

		G_TYPE_NONE, 0);

  /**

   * GDrive::eject-button:

   * @drive: a #GDrive.

   *

   * Emitted when the physical eject button (if any) of a drive has

   * been pressed.

   **/

  g_signal_new (I_("eject-button"),

		G_TYPE_DRIVE,

		G_SIGNAL_RUN_LAST,

		G_STRUCT_OFFSET (GDriveIface, eject_button),

		NULL, NULL,

		g_cclosure_marshal_VOID__VOID,

		G_TYPE_NONE, 0);

  /**

   * GDrive::stop-button:

   * @drive: a #GDrive.

   *

   * Emitted when the physical stop button (if any) of a drive has

   * been pressed.

   *

   * Since: 2.22

   **/

  g_signal_new (I_("stop-button"),

		G_TYPE_DRIVE,

		G_SIGNAL_RUN_LAST,

		G_STRUCT_OFFSET (GDriveIface, stop_button),

		NULL, NULL,

		g_cclosure_marshal_VOID__VOID,

		G_TYPE_NONE, 0);

}

/**

 * g_drive_get_name:

 * @drive: a #GDrive.

 * 

 * Gets the name of @drive.

 *

 * Returns: a string containing @drive's name. The returned 

 *     string should be freed when no longer needed.

 **/

char *

g_drive_get_name (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), NULL);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->get_name) (drive);

}

/**

 * g_drive_get_icon:

 * @drive: a #GDrive.

 * 

 * Gets the icon for @drive.

 * 

 * Returns: (transfer full): #GIcon for the @drive.

 *    Free the returned object with g_object_unref().

 **/

GIcon *

g_drive_get_icon (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), NULL);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->get_icon) (drive);

}

/**

 * g_drive_get_symbolic_icon:

 * @drive: a #GDrive.

 * 

 * Gets the icon for @drive.

 * 

 * Returns: (transfer full): symbolic #GIcon for the @drive.

 *    Free the returned object with g_object_unref().

 *

 * Since: 2.34

 **/

GIcon *

g_drive_get_symbolic_icon (GDrive *drive)

{

  GDriveIface *iface;

  GIcon *ret;

  g_return_val_if_fail (G_IS_DRIVE (drive), NULL);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->get_symbolic_icon != NULL)

    ret = iface->get_symbolic_icon (drive);

  else

    ret = g_themed_icon_new_with_default_fallbacks ("drive-removable-media-symbolic");

  return ret;

}

/**

 * g_drive_has_volumes:

 * @drive: a #GDrive.

 * 

 * Check if @drive has any mountable volumes.

 * 

 * Returns: %TRUE if the @drive contains volumes, %FALSE otherwise.

 **/

gboolean

g_drive_has_volumes (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->has_volumes) (drive);

}

/**

 * g_drive_get_volumes:

 * @drive: a #GDrive.

 * 

 * Get a list of mountable volumes for @drive.

 *

 * The returned list should be freed with g_list_free(), after

 * its elements have been unreffed with g_object_unref().

 * 

 * Returns: (element-type GVolume) (transfer full): #GList containing any #GVolume objects on the given @drive.

 **/

GList *

g_drive_get_volumes (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), NULL);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->get_volumes) (drive);

}

/**

 * g_drive_is_media_check_automatic:

 * @drive: a #GDrive.

 * 

 * Checks if @drive is capabable of automatically detecting media changes.

 * 

 * Returns: %TRUE if the @drive is capabable of automatically detecting 

 *     media changes, %FALSE otherwise.

 **/

gboolean

g_drive_is_media_check_automatic (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->is_media_check_automatic) (drive);

}

/**

 * g_drive_is_removable:

 * @drive: a #GDrive.

 *

 * Checks if the #GDrive and/or its media is considered removable by the user.

 * See g_drive_is_media_removable().

 *

 * Returns: %TRUE if @drive and/or its media is considered removable, %FALSE otherwise.

 *

 * Since: 2.50

 **/

gboolean

g_drive_is_removable (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->is_removable != NULL)

    return iface->is_removable (drive);

  return FALSE;

}

/**

 * g_drive_is_media_removable:

 * @drive: a #GDrive.

 * 

 * Checks if the @drive supports removable media.

 * 

 * Returns: %TRUE if @drive supports removable media, %FALSE otherwise.

 **/

gboolean

g_drive_is_media_removable (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->is_media_removable) (drive);

}

/**

 * g_drive_has_media:

 * @drive: a #GDrive.

 * 

 * Checks if the @drive has media. Note that the OS may not be polling

 * the drive for media changes; see g_drive_is_media_check_automatic()

 * for more details.

 * 

 * Returns: %TRUE if @drive has media, %FALSE otherwise.

 **/

gboolean

g_drive_has_media (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->has_media) (drive);

}

/**

 * g_drive_can_eject:

 * @drive: a #GDrive.

 * 

 * Checks if a drive can be ejected.

 * 

 * Returns: %TRUE if the @drive can be ejected, %FALSE otherwise.

 **/

gboolean

g_drive_can_eject (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->can_eject == NULL)

    return FALSE;

  return (* iface->can_eject) (drive);

}

/**

 * g_drive_can_poll_for_media:

 * @drive: a #GDrive.

 * 

 * Checks if a drive can be polled for media changes.

 * 

 * Returns: %TRUE if the @drive can be polled for media changes,

 *     %FALSE otherwise.

 **/

gboolean

g_drive_can_poll_for_media (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->poll_for_media == NULL)

    return FALSE;

  return (* iface->can_poll_for_media) (drive);

}

/**

 * g_drive_eject:

 * @drive: a #GDrive.

 * @flags: flags affecting the unmount if required for eject

 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.

 * @callback: (nullable): a #GAsyncReadyCallback, or %NULL.

 * @user_data: user data to pass to @callback

 * 

 * Asynchronously ejects a drive.

 *

 * When the operation is finished, @callback will be called.

 * You can then call g_drive_eject_finish() to obtain the

 * result of the operation.

 *

 * Deprecated: 2.22: Use g_drive_eject_with_operation() instead.

 **/

void

g_drive_eject (GDrive              *drive,

	       GMountUnmountFlags   flags,

	       GCancellable        *cancellable,

	       GAsyncReadyCallback  callback,

	       gpointer             user_data)

{

  GDriveIface *iface;

  g_return_if_fail (G_IS_DRIVE (drive));

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->eject == NULL)

    {

      g_task_report_new_error (drive, callback, user_data,

                               g_drive_eject_with_operation,

                               G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,

                               _("drive doesn’t implement eject"));

      return;

    }

  (* iface->eject) (drive, flags, cancellable, callback, user_data);

}

/**

 * g_drive_eject_finish:

 * @drive: a #GDrive.

 * @result: a #GAsyncResult.

 * @error: a #GError, or %NULL

 * 

 * Finishes ejecting a drive.

 * 

 * Returns: %TRUE if the drive has been ejected successfully,

 *     %FALSE otherwise.

 *

 * Deprecated: 2.22: Use g_drive_eject_with_operation_finish() instead.

 **/

gboolean

g_drive_eject_finish (GDrive        *drive,

		      GAsyncResult  *result,

		      GError       **error)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);

  if (g_async_result_legacy_propagate_error (result, error))

    return FALSE;

  else if (g_async_result_is_tagged (result, g_drive_eject_with_operation))

    return g_task_propagate_boolean (G_TASK (result), error);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->eject_finish) (drive, result, error);

}

/**

 * g_drive_eject_with_operation:

 * @drive: a #GDrive.

 * @flags: flags affecting the unmount if required for eject

 * @mount_operation: (nullable): a #GMountOperation or %NULL to avoid

 *     user interaction.

 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.

 * @callback: (nullable): a #GAsyncReadyCallback, or %NULL.

 * @user_data: user data passed to @callback.

 *

 * Ejects a drive. This is an asynchronous operation, and is

 * finished by calling g_drive_eject_with_operation_finish() with the @drive

 * and #GAsyncResult data returned in the @callback.

 *

 * Since: 2.22

 **/

void

g_drive_eject_with_operation (GDrive              *drive,

                              GMountUnmountFlags   flags,

                              GMountOperation     *mount_operation,

                              GCancellable        *cancellable,

                              GAsyncReadyCallback  callback,

                              gpointer             user_data)

{

  GDriveIface *iface;

  g_return_if_fail (G_IS_DRIVE (drive));

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->eject == NULL && iface->eject_with_operation == NULL)

    {

      g_task_report_new_error (drive, callback, user_data,

                               g_drive_eject_with_operation,

                               G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,

                               /* Translators: This is an error

                                * message for drive objects that

                                * don't implement any of eject or eject_with_operation. */

                               _("drive doesn’t implement eject or eject_with_operation"));

      return;

    }

  if (iface->eject_with_operation != NULL)

    (* iface->eject_with_operation) (drive, flags, mount_operation, cancellable, callback, user_data);

  else

    (* iface->eject) (drive, flags, cancellable, callback, user_data);

}

/**

 * g_drive_eject_with_operation_finish:

 * @drive: a #GDrive.

 * @result: a #GAsyncResult.

 * @error: a #GError location to store the error occurring, or %NULL to

 *     ignore.

 *

 * Finishes ejecting a drive. If any errors occurred during the operation,

 * @error will be set to contain the errors and %FALSE will be returned.

 *

 * Returns: %TRUE if the drive was successfully ejected. %FALSE otherwise.

 *

 * Since: 2.22

 **/

gboolean

g_drive_eject_with_operation_finish (GDrive        *drive,

                                     GAsyncResult  *result,

                                     GError       **error)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);

  if (g_async_result_legacy_propagate_error (result, error))

    return FALSE;

  else if (g_async_result_is_tagged (result, g_drive_eject_with_operation))

    return g_task_propagate_boolean (G_TASK (result), error);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->eject_with_operation_finish != NULL)

    return (* iface->eject_with_operation_finish) (drive, result, error);

  else

    return (* iface->eject_finish) (drive, result, error);

}

/**

 * g_drive_poll_for_media:

 * @drive: a #GDrive.

 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.

 * @callback: (nullable): a #GAsyncReadyCallback, or %NULL.

 * @user_data: user data to pass to @callback

 * 

 * Asynchronously polls @drive to see if media has been inserted or removed.

 * 

 * When the operation is finished, @callback will be called.

 * You can then call g_drive_poll_for_media_finish() to obtain the

 * result of the operation.

 **/

void

g_drive_poll_for_media (GDrive              *drive,

                        GCancellable        *cancellable,

                        GAsyncReadyCallback  callback,

                        gpointer             user_data)

{

  GDriveIface *iface;

  g_return_if_fail (G_IS_DRIVE (drive));

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->poll_for_media == NULL)

    {

      g_task_report_new_error (drive, callback, user_data,

                               g_drive_poll_for_media,

                               G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,

                               _("drive doesn’t implement polling for media"));

      return;

    }

  (* iface->poll_for_media) (drive, cancellable, callback, user_data);

}

/**

 * g_drive_poll_for_media_finish:

 * @drive: a #GDrive.

 * @result: a #GAsyncResult.

 * @error: a #GError, or %NULL

 * 

 * Finishes an operation started with g_drive_poll_for_media() on a drive.

 * 

 * Returns: %TRUE if the drive has been poll_for_mediaed successfully,

 *     %FALSE otherwise.

 **/

gboolean

g_drive_poll_for_media_finish (GDrive        *drive,

                               GAsyncResult  *result,

                               GError       **error)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);

  if (g_async_result_legacy_propagate_error (result, error))

    return FALSE;

  else if (g_async_result_is_tagged (result, g_drive_poll_for_media))

    return g_task_propagate_boolean (G_TASK (result), error);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->poll_for_media_finish) (drive, result, error);

}

/**

 * g_drive_get_identifier:

 * @drive: a #GDrive

 * @kind: the kind of identifier to return

 *

 * Gets the identifier of the given kind for @drive.

 *

 * Returns: a newly allocated string containing the

 *     requested identfier, or %NULL if the #GDrive

 *     doesn't have this kind of identifier.

 */

char *

g_drive_get_identifier (GDrive     *drive,

			const char *kind)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), NULL);

  g_return_val_if_fail (kind != NULL, NULL);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->get_identifier == NULL)

    return NULL;

  return (* iface->get_identifier) (drive, kind);

}

/**

 * g_drive_enumerate_identifiers:

 * @drive: a #GDrive

 *

 * Gets the kinds of identifiers that @drive has. 

 * Use g_drive_get_identifier() to obtain the identifiers

 * themselves.

 *

 * Returns: (transfer full) (array zero-terminated=1): a %NULL-terminated

 *     array of strings containing kinds of identifiers. Use g_strfreev()

 *     to free.

 */

char **

g_drive_enumerate_identifiers (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), NULL);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->enumerate_identifiers == NULL)

    return NULL;

  return (* iface->enumerate_identifiers) (drive);

}

/**

 * g_drive_get_start_stop_type:

 * @drive: a #GDrive.

 *

 * Gets a hint about how a drive can be started/stopped.

 *

 * Returns: A value from the #GDriveStartStopType enumeration.

 *

 * Since: 2.22

 */

GDriveStartStopType

g_drive_get_start_stop_type (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->get_start_stop_type == NULL)

    return G_DRIVE_START_STOP_TYPE_UNKNOWN;

  return (* iface->get_start_stop_type) (drive);

}

/**

 * g_drive_can_start:

 * @drive: a #GDrive.

 *

 * Checks if a drive can be started.

 *

 * Returns: %TRUE if the @drive can be started, %FALSE otherwise.

 *

 * Since: 2.22

 */

gboolean

g_drive_can_start (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->can_start == NULL)

    return FALSE;

  return (* iface->can_start) (drive);

}

/**

 * g_drive_can_start_degraded:

 * @drive: a #GDrive.

 *

 * Checks if a drive can be started degraded.

 *

 * Returns: %TRUE if the @drive can be started degraded, %FALSE otherwise.

 *

 * Since: 2.22

 */

gboolean

g_drive_can_start_degraded (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->can_start_degraded == NULL)

    return FALSE;

  return (* iface->can_start_degraded) (drive);

}

/**

 * g_drive_start:

 * @drive: a #GDrive.

 * @flags: flags affecting the start operation.

 * @mount_operation: (nullable): a #GMountOperation or %NULL to avoid

 *     user interaction.

 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.

 * @callback: (nullable): a #GAsyncReadyCallback, or %NULL.

 * @user_data: user data to pass to @callback

 *

 * Asynchronously starts a drive.

 *

 * When the operation is finished, @callback will be called.

 * You can then call g_drive_start_finish() to obtain the

 * result of the operation.

 *

 * Since: 2.22

 */

void

g_drive_start (GDrive              *drive,

               GDriveStartFlags     flags,

               GMountOperation     *mount_operation,

               GCancellable        *cancellable,

               GAsyncReadyCallback  callback,

               gpointer             user_data)

{

  GDriveIface *iface;

  g_return_if_fail (G_IS_DRIVE (drive));

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->start == NULL)

    {

      g_task_report_new_error (drive, callback, user_data,

                               g_drive_start,

                               G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,

                               _("drive doesn’t implement start"));

      return;

    }

  (* iface->start) (drive, flags, mount_operation, cancellable, callback, user_data);

}

/**

 * g_drive_start_finish:

 * @drive: a #GDrive.

 * @result: a #GAsyncResult.

 * @error: a #GError, or %NULL

 *

 * Finishes starting a drive.

 *

 * Returns: %TRUE if the drive has been started successfully,

 *     %FALSE otherwise.

 *

 * Since: 2.22

 */

gboolean

g_drive_start_finish (GDrive         *drive,

                      GAsyncResult   *result,

                      GError        **error)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);

  if (g_async_result_legacy_propagate_error (result, error))

    return FALSE;

  else if (g_async_result_is_tagged (result, g_drive_start))

    return g_task_propagate_boolean (G_TASK (result), error);

  iface = G_DRIVE_GET_IFACE (drive);

  return (* iface->start_finish) (drive, result, error);

}

/**

 * g_drive_can_stop:

 * @drive: a #GDrive.

 *

 * Checks if a drive can be stopped.

 *

 * Returns: %TRUE if the @drive can be stopped, %FALSE otherwise.

 *

 * Since: 2.22

 */

gboolean

g_drive_can_stop (GDrive *drive)

{

  GDriveIface *iface;

  g_return_val_if_fail (G_IS_DRIVE (drive), FALSE);

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->can_stop == NULL)

    return FALSE;

  return (* iface->can_stop) (drive);

}

/**

 * g_drive_stop:

 * @drive: a #GDrive.

 * @flags: flags affecting the unmount if required for stopping.

 * @mount_operation: (nullable): a #GMountOperation or %NULL to avoid

 *     user interaction.

 * @cancellable: (nullable): optional #GCancellable object, %NULL to ignore.

 * @callback: (nullable): a #GAsyncReadyCallback, or %NULL.

 * @user_data: user data to pass to @callback

 *

 * Asynchronously stops a drive.

 *

 * When the operation is finished, @callback will be called.

 * You can then call g_drive_stop_finish() to obtain the

 * result of the operation.

 *

 * Since: 2.22

 */

void

g_drive_stop (GDrive               *drive,

              GMountUnmountFlags    flags,

              GMountOperation      *mount_operation,

              GCancellable         *cancellable,

              GAsyncReadyCallback   callback,

              gpointer              user_data)

{

  GDriveIface *iface;

  g_return_if_fail (G_IS_DRIVE (drive));

  iface = G_DRIVE_GET_IFACE (drive);

  if (iface->stop == NULL)

    {

      g_task_report_new_error (drive, callback, user_data,

                               g_drive_start,

                               G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,

                               _("drive doesn’t implement stop"));

      return;

    }