/* 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 "gmount.h" #include "gvolume.h" #include "gasyncresult.h" #include "gsimpleasyncresult.h" #include "gioerror.h" #include "glibintl.h" #include "gioalias.h" /** * SECTION:gvolume * @short_description: Volume management * @include: gio/gio.h * * The #GVolume interface represents user-visible objects that can be * mounted. Note, when porting from GnomeVFS, #GVolume is the moral * equivalent of #GnomeVFSDrive. * * Mounting a #GVolume instance is an asynchronous operation. For more * information about asynchronous operations, see #GAsyncReady and * #GSimpleAsyncReady. To mount a #GVolume, first call * g_volume_mount() with (at least) the #GVolume instance, optionally * a #GMountOperation object and a #GAsyncReadyCallback. * * Typically, one will only want to pass %NULL for the * #GMountOperation if automounting all volumes when a desktop session * starts since it's not desirable to put up a lot of dialogs asking * for credentials. * * The callback will be fired when the operation has resolved (either * with success or failure), and a #GAsyncReady structure will be * passed to the callback. That callback should then call * g_volume_mount_finish() with the #GVolume instance and the * #GAsyncReady data to see if the operation was completed * successfully. If an @error is present when g_volume_mount_finish() * is called, then it will be filled with any error information. * * * It is sometimes necessary to directly access the underlying * operating system object behind a volume (e.g. for passing a volume * to an application via the commandline). For this purpose, GIO * allows to obtain an 'identifier' for the volume. There can be * different kinds of identifiers, such as Hal UDIs, filesystem labels, * traditional Unix devices (e.g. /dev/sda2), * uuids. GIO uses predefind strings as names for the different kinds * of identifiers: #G_VOLUME_IDENTIFIER_KIND_HAL_UDI, * #G_VOLUME_IDENTIFIER_KIND_LABEL, etc. Use g_volume_get_identifier() * to obtain an identifier for a volume. * * * Note that #G_VOLUME_IDENTIFIER_KIND_HAL_UDI will only be available * when the gvfs hal volume monitor is in use. Other volume monitors * will generally be able to provide the #G_VOLUME_IDENTIFIER_KIND_UNIX_DEVICE * identifier, which can be used to obtain a hal device by means of * libhal_manger_find_device_string_match(). */ static void g_volume_base_init (gpointer g_class); static void g_volume_class_init (gpointer g_class, gpointer class_data); GType g_volume_get_type (void) { static volatile gsize g_define_type_id__volatile = 0; if (g_once_init_enter (&g_define_type_id__volatile)) { const GTypeInfo volume_info = { sizeof (GVolumeIface), /* class_size */ g_volume_base_init, /* base_init */ NULL, /* base_finalize */ g_volume_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_("GVolume"), &volume_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_volume_class_init (gpointer g_class, gpointer class_data) { } static void g_volume_base_init (gpointer g_class) { static gboolean initialized = FALSE; if (! initialized) { /** * GVolume::changed: * * Emitted when the volume has been changed. **/ g_signal_new (I_("changed"), G_TYPE_VOLUME, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GVolumeIface, changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * GVolume::removed: * * This signal is emitted when the #GVolume have been removed. If * the recipient is holding references to the object they should * release them so the object can be finalized. **/ g_signal_new (I_("removed"), G_TYPE_VOLUME, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GVolumeIface, removed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); initialized = TRUE; } } /** * g_volume_get_name: * @volume: a #GVolume. * * Gets the name of @volume. * * Returns: the name for the given @volume. The returned string should * be freed with g_free() when no longer needed. **/ char * g_volume_get_name (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), NULL); iface = G_VOLUME_GET_IFACE (volume); return (* iface->get_name) (volume); } /** * g_volume_get_icon: * @volume: a #GVolume. * * Gets the icon for @volume. * * Returns: a #GIcon. * The returned object should be unreffed with g_object_unref() * when no longer needed. **/ GIcon * g_volume_get_icon (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), NULL); iface = G_VOLUME_GET_IFACE (volume); return (* iface->get_icon) (volume); } /** * g_volume_get_uuid: * @volume: a #GVolume. * * Gets the UUID for the @volume. The reference is typically based on * the file system UUID for the volume in question and should be * considered an opaque string. Returns %NULL if there is no UUID * available. * * Returns: the UUID for @volume or %NULL if no UUID can be computed. * The returned string should be freed with g_free() * when no longer needed. **/ char * g_volume_get_uuid (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), NULL); iface = G_VOLUME_GET_IFACE (volume); return (* iface->get_uuid) (volume); } /** * g_volume_get_drive: * @volume: a #GVolume. * * Gets the drive for the @volume. * * Returns: a #GDrive or %NULL if @volume is not associated with a drive. * The returned object should be unreffed with g_object_unref() * when no longer needed. **/ GDrive * g_volume_get_drive (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), NULL); iface = G_VOLUME_GET_IFACE (volume); return (* iface->get_drive) (volume); } /** * g_volume_get_mount: * @volume: a #GVolume. * * Gets the mount for the @volume. * * Returns: a #GMount or %NULL if @volume isn't mounted. * The returned object should be unreffed with g_object_unref() * when no longer needed. **/ GMount * g_volume_get_mount (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), NULL); iface = G_VOLUME_GET_IFACE (volume); return (* iface->get_mount) (volume); } /** * g_volume_can_mount: * @volume: a #GVolume. * * Checks if a volume can be mounted. * * Returns: %TRUE if the @volume can be mounted. %FALSE otherwise. **/ gboolean g_volume_can_mount (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), FALSE); iface = G_VOLUME_GET_IFACE (volume); if (iface->can_mount == NULL) return FALSE; return (* iface->can_mount) (volume); } /** * g_volume_can_eject: * @volume: a #GVolume. * * Checks if a volume can be ejected. * * Returns: %TRUE if the @volume can be ejected. %FALSE otherwise. **/ gboolean g_volume_can_eject (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), FALSE); iface = G_VOLUME_GET_IFACE (volume); if (iface->can_eject == NULL) return FALSE; return (* iface->can_eject) (volume); } /** * g_volume_should_automount: * @volume: a #GVolume * * Returns whether the volume should be automatically mounted. * * Returns: %TRUE if the volume should be automatically mounted. */ gboolean g_volume_should_automount (GVolume *volume) { GVolumeIface *iface; g_return_val_if_fail (G_IS_VOLUME (volume), FALSE); iface = G_VOLUME_GET_IFACE (volume); if (iface->should_automount == NULL) return FALSE; return (* iface->should_automount) (volume); } /** * g_volume_mount: * @volume: a #GVolume. * @flags: flags affecting the operation * @mount_operation: a #GMountOperation or %NULL to avoid user interaction. * @cancellable: optional #GCancellable object, %NULL to ignore. * @callback: a #GAsyncReadyCallback, or %NULL. * @user_data: user data that gets passed to @callback * * Mounts a volume. This is an asynchronous operation, and is * finished by calling g_volume_mount_finish() with the @volume * and #GAsyncResult returned in the @callback. **/ void g_volume_mount (GVolume *volume, GMountMountFlags flags, GMountOperation *mount_operation, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data) { GVolumeIface *iface; g_return_if_fail (G_IS_VOLUME (volume)); iface = G_VOLUME_GET_IFACE (volume); if (iface->mount_fn == NULL) { g_simple_async_report_error_in_idle (G_OBJECT (volume), callback, user_data, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("volume doesn't implement mount")); return; } (* iface->mount_fn) (volume, flags, mount_operation, cancellable, callback, user_data); } /** * g_volume_mount_finish: * @volume: a #GVolume * @result: a #GAsyncResult * @error: a #GError location to store an error, or %NULL to ignore * * Finishes mounting a volume. If any errors occured during the operation, * @error will be set to contain the errors and %FALSE will be returned. * * If the mount operation succeeded, g_volume_get_mount() on @volume * is guaranteed to return the mount right after calling this * function; there's no need to listen for the 'mount-added' signal on * #GVolumeMonitor. * * Returns: %TRUE, %FALSE if operation failed. **/ gboolean g_volume_mount_finish (GVolume *volume, GAsyncResult *result, 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); return (* iface->mount_finish) (volume, result, error); } /** * g_volume_eject: * @volume: a #GVolume. * @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 that gets passed to @callback * * Ejects a volume. This is an asynchronous operation, and is * finished by calling g_volume_eject_finish() with the @volume * and #GAsyncResult returned in the @callback. **/ void g_volume_eject (GVolume *volume, GMountUnmountFlags flags, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data) { GVolumeIface *iface; g_return_if_fail (G_IS_VOLUME (volume)); iface = G_VOLUME_GET_IFACE (volume); if (iface->eject == NULL) { g_simple_async_report_error_in_idle (G_OBJECT (volume), callback, user_data, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("volume doesn't implement eject")); return; } (* iface->eject) (volume, flags, cancellable, callback, user_data); } /** * g_volume_eject_finish: * @volume: pointer to a #GVolume. * @result: a #GAsyncResult. * @error: a #GError location to store an error, or %NULL to ignore * * Finishes ejecting a volume. If any errors occured during the operation, * @error will be set to contain the errors and %FALSE will be returned. * * Returns: %TRUE, %FALSE if operation failed. **/ gboolean g_volume_eject_finish (GVolume *volume, GAsyncResult *result, 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); 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 introduction * 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 identifiers * 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 * * * 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 */ * * * then the expression * * * (g_file_has_prefix (volume_activation_root, mount_root) || g_file_equal (volume_activation_root, mount_root)) * * * 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"