/* 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 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, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * Author: Alexander Larsson * David Zeuthen */ #include "config.h" #include "gdrive.h" #include "gsimpleasyncresult.h" #include "gasyncresult.h" #include "gioerror.h" #include "glibintl.h" #include "gioalias.h" /** * SECTION:gdrive * @short_description: Virtual File System drive management * @include: gio/gio.h * * #GDrive - this represent a piece of hardware connected to the machine. * Its 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, determing 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. * * For porting from GnomeVFS note that there is no equivalent of * #GDrive in that API. **/ static void g_drive_base_init (gpointer g_class); static void g_drive_class_init (gpointer g_class, gpointer class_data); GType g_drive_get_type (void) { static volatile gsize g_define_type_id__volatile = 0; if (g_once_init_enter (&g_define_type_id__volatile)) { const GTypeInfo drive_info = { sizeof (GDriveIface), /* class_size */ g_drive_base_init, /* base_init */ NULL, /* base_finalize */ g_drive_class_init, NULL, /* class_finalize */ NULL, /* class_data */ 0, 0, /* n_preallocs */ NULL }; GType g_define_type_id = g_type_register_static (G_TYPE_INTERFACE, I_("GDrive"), &drive_info, 0); g_type_interface_add_prerequisite (g_define_type_id, G_TYPE_OBJECT); g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); } return g_define_type_id__volatile; } static void g_drive_class_init (gpointer g_class, gpointer class_data) { } static void g_drive_base_init (gpointer g_class) { static gboolean initialized = FALSE; if (! initialized) { /** * 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); initialized = TRUE; } } /** * 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: #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_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: #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_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: optional #GCancellable object, %NULL to ignore. * @callback: 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. **/ 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_simple_async_report_error_in_idle (G_OBJECT (drive), callback, user_data, 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. **/ 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_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_DRIVE_GET_IFACE (drive); return (* iface->eject_finish) (drive, result, error); } /** * g_drive_poll_for_media: * @drive: a #GDrive. * @cancellable: optional #GCancellable object, %NULL to ignore. * @callback: 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_simple_async_report_error_in_idle (G_OBJECT (drive), callback, user_data, 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_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_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_identifer() to obtain the identifiers * themselves. * * Returns: 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); } #define __G_DRIVE_C__ #include "gioaliasdef.c"