gio/gunixvolumemonitor.c - third_party/glib - Git at Google

 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */

 /* GIO - GLib Input, Output and Streaming Library
  *
  * Copyright (C) 2006-2007 Red Hat, Inc.
  *
  * SPDX-License-Identifier: LGPL-2.1-or-later
  *
  * 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 <string.h>

 #include <glib.h>
 #include "gunixvolumemonitor.h"
 #include "gunixmounts.h"
 #include "gunixmount.h"
 #include "gunixvolume.h"
 #include "gmount.h"
 #include "gmountprivate.h"
 #include "giomodule.h"
 #include "glibintl.h"


 struct _GUnixVolumeMonitor {
   GNativeVolumeMonitor parent;

   GUnixMountMonitor *mount_monitor;

   GList *last_mountpoints;
   GList *last_mounts;

   GList *volumes;
   GList *mounts;
 };

 static void mountpoints_changed      (GUnixMountMonitor  *mount_monitor,
                                       gpointer            user_data);
 static void mounts_changed           (GUnixMountMonitor  *mount_monitor,
                                       gpointer            user_data);
 static void update_volumes           (GUnixVolumeMonitor *monitor);
 static void update_mounts            (GUnixVolumeMonitor *monitor);

 #define g_unix_volume_monitor_get_type _g_unix_volume_monitor_get_type
 G_DEFINE_TYPE_WITH_CODE (GUnixVolumeMonitor, g_unix_volume_monitor, G_TYPE_NATIVE_VOLUME_MONITOR,
                          g_io_extension_point_implement (G_NATIVE_VOLUME_MONITOR_EXTENSION_POINT_NAME,
 							 g_define_type_id,
 							 "unix",
 							 0));

 static void
 g_unix_volume_monitor_finalize (GObject *object)
 {
   GUnixVolumeMonitor *monitor;

   monitor = G_UNIX_VOLUME_MONITOR (object);

   g_signal_handlers_disconnect_by_func (monitor->mount_monitor, mountpoints_changed, monitor);
   g_signal_handlers_disconnect_by_func (monitor->mount_monitor, mounts_changed, monitor);

   g_object_unref (monitor->mount_monitor);

   g_list_free_full (monitor->last_mountpoints, (GDestroyNotify) g_unix_mount_point_free);
   g_list_free_full (monitor->last_mounts, (GDestroyNotify) g_unix_mount_free);

   g_list_free_full (monitor->volumes, g_object_unref);
   g_list_free_full (monitor->mounts, g_object_unref);

   G_OBJECT_CLASS (g_unix_volume_monitor_parent_class)->finalize (object);
 }

 static void
 g_unix_volume_monitor_dispose (GObject *object)
 {
   GUnixVolumeMonitor *monitor;

   monitor = G_UNIX_VOLUME_MONITOR (object);

   g_list_free_full (monitor->volumes, g_object_unref);
   monitor->volumes = NULL;

   g_list_free_full (monitor->mounts, g_object_unref);
   monitor->mounts = NULL;

   G_OBJECT_CLASS (g_unix_volume_monitor_parent_class)->dispose (object);
 }

 static GList *
 get_mounts (GVolumeMonitor *volume_monitor)
 {
   GUnixVolumeMonitor *monitor;

   monitor = G_UNIX_VOLUME_MONITOR (volume_monitor);

   return g_list_copy_deep (monitor->mounts, (GCopyFunc) g_object_ref, NULL);
 }

 static GList *
 get_volumes (GVolumeMonitor *volume_monitor)
 {
   GUnixVolumeMonitor *monitor;

   monitor = G_UNIX_VOLUME_MONITOR (volume_monitor);

   return g_list_copy_deep (monitor->volumes, (GCopyFunc) g_object_ref, NULL);
 }

 static GList *
 get_connected_drives (GVolumeMonitor *volume_monitor)
 {
   return NULL;
 }

 static GVolume *
 get_volume_for_uuid (GVolumeMonitor *volume_monitor, const char *uuid)
 {
   return NULL;
 }

 static GMount *
 get_mount_for_uuid (GVolumeMonitor *volume_monitor, const char *uuid)
 {
   return NULL;
 }

 static gboolean
 is_supported (void)
 {
   return TRUE;
 }

 static GMount *
 get_mount_for_mount_path (const char *mount_path,
                           GCancellable *cancellable)
 {
   GUnixMountEntry *mount_entry;
   GUnixMount *mount;

   mount_entry = g_unix_mount_at (mount_path, NULL);

   if (!mount_entry)
     return NULL;

   /* TODO: Set mountable volume? */
   mount = _g_unix_mount_new (NULL, mount_entry, NULL);

   g_unix_mount_free (mount_entry);

   return G_MOUNT (mount);
 }

 static void
 g_unix_volume_monitor_class_init (GUnixVolumeMonitorClass *klass)
 {
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
   GVolumeMonitorClass *monitor_class = G_VOLUME_MONITOR_CLASS (klass);
   GNativeVolumeMonitorClass *native_class = G_NATIVE_VOLUME_MONITOR_CLASS (klass);

   gobject_class->finalize = g_unix_volume_monitor_finalize;
   gobject_class->dispose = g_unix_volume_monitor_dispose;

   monitor_class->get_mounts = get_mounts;
   monitor_class->get_volumes = get_volumes;
   monitor_class->get_connected_drives = get_connected_drives;
   monitor_class->get_volume_for_uuid = get_volume_for_uuid;
   monitor_class->get_mount_for_uuid = get_mount_for_uuid;
   monitor_class->is_supported = is_supported;

   native_class->get_mount_for_mount_path = get_mount_for_mount_path;
 }

 void
 _g_unix_volume_monitor_update (GUnixVolumeMonitor *unix_monitor)
 {
   /* Update both to make sure volumes are created before mounts */
   update_volumes (unix_monitor);
   update_mounts (unix_monitor);
 }

 static void
 mountpoints_changed (GUnixMountMonitor *mount_monitor,
 		     gpointer           user_data)
 {
   GUnixVolumeMonitor *unix_monitor = user_data;

   _g_unix_volume_monitor_update (unix_monitor);
 }

 static void
 mounts_changed (GUnixMountMonitor *mount_monitor,
 		gpointer           user_data)
 {
   GUnixVolumeMonitor *unix_monitor = user_data;

   _g_unix_volume_monitor_update (unix_monitor);
 }

 static void
 g_unix_volume_monitor_init (GUnixVolumeMonitor *unix_monitor)
 {

   unix_monitor->mount_monitor = g_unix_mount_monitor_get ();

   g_signal_connect (unix_monitor->mount_monitor,
 		    "mounts-changed", G_CALLBACK (mounts_changed),
 		    unix_monitor);

   g_signal_connect (unix_monitor->mount_monitor,
 		    "mountpoints-changed", G_CALLBACK (mountpoints_changed),
 		    unix_monitor);

   _g_unix_volume_monitor_update (unix_monitor);
 }

 GVolumeMonitor *
 _g_unix_volume_monitor_new (void)
 {
   GUnixVolumeMonitor *monitor;

   monitor = g_object_new (G_TYPE_UNIX_VOLUME_MONITOR, NULL);

   return G_VOLUME_MONITOR (monitor);
 }

 static void
 diff_sorted_lists (GList         *list1,
                    GList         *list2,
                    GCompareFunc   compare,
 		   GList        **added,
                    GList        **removed)
 {
   int order;

   *added = *removed = NULL;

   while (list1 != NULL &&
 	 list2 != NULL)
     {
       order = (*compare) (list1->data, list2->data);
       if (order < 0)
 	{
 	  *removed = g_list_prepend (*removed, list1->data);
 	  list1 = list1->next;
 	}
       else if (order > 0)
 	{
 	  *added = g_list_prepend (*added, list2->data);
 	  list2 = list2->next;
 	}
       else
 	{ /* same item */
 	  list1 = list1->next;
 	  list2 = list2->next;
 	}
     }

   while (list1 != NULL)
     {
       *removed = g_list_prepend (*removed, list1->data);
       list1 = list1->next;
     }
   while (list2 != NULL)
     {
       *added = g_list_prepend (*added, list2->data);
       list2 = list2->next;
     }
 }

 GUnixVolume *
 _g_unix_volume_monitor_lookup_volume_for_mount_path (GUnixVolumeMonitor *monitor,
                                                      const char         *mount_path)
 {
   GList *l;

   for (l = monitor->volumes; l != NULL; l = l->next)
     {
       GUnixVolume *volume = l->data;

       if (_g_unix_volume_has_mount_path (volume, mount_path))
 	return volume;
     }

   return NULL;
 }

 static GUnixMount *
 find_mount_by_mountpath (GUnixVolumeMonitor *monitor,
                          const char *mount_path)
 {
   GList *l;

   for (l = monitor->mounts; l != NULL; l = l->next)
     {
       GUnixMount *mount = l->data;

       if (_g_unix_mount_has_mount_path (mount, mount_path))
 	return mount;
     }

   return NULL;
 }

 static void
 update_volumes (GUnixVolumeMonitor *monitor)
 {
   GList *new_mountpoints;
   GList *removed, *added;
   GList *l;
   GUnixVolume *volume;

   new_mountpoints = g_unix_mount_points_get (NULL);

   new_mountpoints = g_list_sort (new_mountpoints, (GCompareFunc) g_unix_mount_point_compare);

   diff_sorted_lists (monitor->last_mountpoints,
 		     new_mountpoints, (GCompareFunc) g_unix_mount_point_compare,
 		     &added, &removed);

   for (l = removed; l != NULL; l = l->next)
     {
       GUnixMountPoint *mountpoint = l->data;

       volume = _g_unix_volume_monitor_lookup_volume_for_mount_path (monitor,
                                                                     g_unix_mount_point_get_mount_path (mountpoint));
       if (volume)
 	{
 	  _g_unix_volume_disconnected (volume);
 	  monitor->volumes = g_list_remove (monitor->volumes, volume);
 	  g_signal_emit_by_name (monitor, "volume-removed", volume);
 	  g_signal_emit_by_name (volume, "removed");
 	  g_object_unref (volume);
 	}
     }

   for (l = added; l != NULL; l = l->next)
     {
       GUnixMountPoint *mountpoint = l->data;

       volume = _g_unix_volume_new (G_VOLUME_MONITOR (monitor), mountpoint);
       if (volume)
 	{
 	  monitor->volumes = g_list_prepend (monitor->volumes, volume);
 	  g_signal_emit_by_name (monitor, "volume-added", volume);
 	}
     }

   g_list_free (added);
   g_list_free (removed);
   g_list_free_full (monitor->last_mountpoints, (GDestroyNotify) g_unix_mount_point_free);
   monitor->last_mountpoints = new_mountpoints;
 }

 static void
 update_mounts (GUnixVolumeMonitor *monitor)
 {
   GList *new_mounts;
   GList *removed, *added;
   GList *l;
   GUnixMount *mount;
   GUnixVolume *volume;
   const char *mount_path;

   new_mounts = g_unix_mounts_get (NULL);

   new_mounts = g_list_sort (new_mounts, (GCompareFunc) g_unix_mount_compare);

   diff_sorted_lists (monitor->last_mounts,
 		     new_mounts, (GCompareFunc) g_unix_mount_compare,
 		     &added, &removed);

   for (l = removed; l != NULL; l = l->next)
     {
       GUnixMountEntry *mount_entry = l->data;

       mount = find_mount_by_mountpath (monitor, g_unix_mount_get_mount_path (mount_entry));
       if (mount)
 	{
 	  _g_unix_mount_unmounted (mount);
 	  monitor->mounts = g_list_remove (monitor->mounts, mount);
 	  g_signal_emit_by_name (monitor, "mount-removed", mount);
 	  g_signal_emit_by_name (mount, "unmounted");
 	  g_object_unref (mount);
 	}
     }

   for (l = added; l != NULL; l = l->next)
     {
       GUnixMountEntry *mount_entry = l->data;

       mount_path = g_unix_mount_get_mount_path (mount_entry);

       volume = _g_unix_volume_monitor_lookup_volume_for_mount_path (monitor, mount_path);
       mount = _g_unix_mount_new (G_VOLUME_MONITOR (monitor), mount_entry, volume);
       if (mount)
 	{
 	  monitor->mounts = g_list_prepend (monitor->mounts, mount);
 	  g_signal_emit_by_name (monitor, "mount-added", mount);
 	}
     }

   g_list_free (added);
   g_list_free (removed);
   g_list_free_full (monitor->last_mounts, (GDestroyNotify) g_unix_mount_free);
   monitor->last_mounts = new_mounts;
 }
	/* -- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -- */

	/* GIO - GLib Input, Output and Streaming Library
	*
	* Copyright (C) 2006-2007 Red Hat, Inc.
	*
	* SPDX-License-Identifier: LGPL-2.1-or-later
	*
	* 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 <string.h>

	#include <glib.h>
	#include "gunixvolumemonitor.h"
	#include "gunixmounts.h"
	#include "gunixmount.h"
	#include "gunixvolume.h"
	#include "gmount.h"
	#include "gmountprivate.h"
	#include "giomodule.h"
	#include "glibintl.h"


	struct _GUnixVolumeMonitor {
	GNativeVolumeMonitor parent;

	GUnixMountMonitor *mount_monitor;

	GList *last_mountpoints;
	GList *last_mounts;

	GList *volumes;
	GList *mounts;
	};

	static void mountpoints_changed (GUnixMountMonitor *mount_monitor,
	gpointer user_data);
	static void mounts_changed (GUnixMountMonitor *mount_monitor,
	gpointer user_data);
	static void update_volumes (GUnixVolumeMonitor *monitor);
	static void update_mounts (GUnixVolumeMonitor *monitor);

	#define g_unix_volume_monitor_get_type _g_unix_volume_monitor_get_type
	G_DEFINE_TYPE_WITH_CODE (GUnixVolumeMonitor, g_unix_volume_monitor, G_TYPE_NATIVE_VOLUME_MONITOR,
	g_io_extension_point_implement (G_NATIVE_VOLUME_MONITOR_EXTENSION_POINT_NAME,
	g_define_type_id,
	"unix",
	0));

	static void
	g_unix_volume_monitor_finalize (GObject *object)
	{
	GUnixVolumeMonitor *monitor;

	monitor = G_UNIX_VOLUME_MONITOR (object);

	g_signal_handlers_disconnect_by_func (monitor->mount_monitor, mountpoints_changed, monitor);
	g_signal_handlers_disconnect_by_func (monitor->mount_monitor, mounts_changed, monitor);

	g_object_unref (monitor->mount_monitor);

	g_list_free_full (monitor->last_mountpoints, (GDestroyNotify) g_unix_mount_point_free);
	g_list_free_full (monitor->last_mounts, (GDestroyNotify) g_unix_mount_free);

	g_list_free_full (monitor->volumes, g_object_unref);
	g_list_free_full (monitor->mounts, g_object_unref);

	G_OBJECT_CLASS (g_unix_volume_monitor_parent_class)->finalize (object);
	}

	static void
	g_unix_volume_monitor_dispose (GObject *object)
	{
	GUnixVolumeMonitor *monitor;

	monitor = G_UNIX_VOLUME_MONITOR (object);

	g_list_free_full (monitor->volumes, g_object_unref);
	monitor->volumes = NULL;

	g_list_free_full (monitor->mounts, g_object_unref);
	monitor->mounts = NULL;

	G_OBJECT_CLASS (g_unix_volume_monitor_parent_class)->dispose (object);
	}

	static GList *
	get_mounts (GVolumeMonitor *volume_monitor)
	{
	GUnixVolumeMonitor *monitor;

	monitor = G_UNIX_VOLUME_MONITOR (volume_monitor);

	return g_list_copy_deep (monitor->mounts, (GCopyFunc) g_object_ref, NULL);
	}

	static GList *
	get_volumes (GVolumeMonitor *volume_monitor)
	{
	GUnixVolumeMonitor *monitor;

	monitor = G_UNIX_VOLUME_MONITOR (volume_monitor);

	return g_list_copy_deep (monitor->volumes, (GCopyFunc) g_object_ref, NULL);
	}

	static GList *
	get_connected_drives (GVolumeMonitor *volume_monitor)
	{
	return NULL;
	}

	static GVolume *
	get_volume_for_uuid (GVolumeMonitor volume_monitor, const char uuid)
	{
	return NULL;
	}

	static GMount *
	get_mount_for_uuid (GVolumeMonitor volume_monitor, const char uuid)
	{
	return NULL;
	}

	static gboolean
	is_supported (void)
	{
	return TRUE;
	}

	static GMount *
	get_mount_for_mount_path (const char *mount_path,
	GCancellable *cancellable)
	{
	GUnixMountEntry *mount_entry;
	GUnixMount *mount;

	mount_entry = g_unix_mount_at (mount_path, NULL);

	if (!mount_entry)
	return NULL;

	/* TODO: Set mountable volume? */
	mount = _g_unix_mount_new (NULL, mount_entry, NULL);

	g_unix_mount_free (mount_entry);

	return G_MOUNT (mount);
	}

	static void
	g_unix_volume_monitor_class_init (GUnixVolumeMonitorClass *klass)
	{
	GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
	GVolumeMonitorClass *monitor_class = G_VOLUME_MONITOR_CLASS (klass);
	GNativeVolumeMonitorClass *native_class = G_NATIVE_VOLUME_MONITOR_CLASS (klass);

	gobject_class->finalize = g_unix_volume_monitor_finalize;
	gobject_class->dispose = g_unix_volume_monitor_dispose;

	monitor_class->get_mounts = get_mounts;
	monitor_class->get_volumes = get_volumes;
	monitor_class->get_connected_drives = get_connected_drives;
	monitor_class->get_volume_for_uuid = get_volume_for_uuid;
	monitor_class->get_mount_for_uuid = get_mount_for_uuid;
	monitor_class->is_supported = is_supported;

	native_class->get_mount_for_mount_path = get_mount_for_mount_path;
	}

	void
	_g_unix_volume_monitor_update (GUnixVolumeMonitor *unix_monitor)
	{
	/* Update both to make sure volumes are created before mounts */
	update_volumes (unix_monitor);
	update_mounts (unix_monitor);
	}

	static void
	mountpoints_changed (GUnixMountMonitor *mount_monitor,
	gpointer user_data)
	{
	GUnixVolumeMonitor *unix_monitor = user_data;

	_g_unix_volume_monitor_update (unix_monitor);
	}

	static void
	mounts_changed (GUnixMountMonitor *mount_monitor,
	gpointer user_data)
	{
	GUnixVolumeMonitor *unix_monitor = user_data;

	_g_unix_volume_monitor_update (unix_monitor);
	}

	static void
	g_unix_volume_monitor_init (GUnixVolumeMonitor *unix_monitor)
	{

	unix_monitor->mount_monitor = g_unix_mount_monitor_get ();

	g_signal_connect (unix_monitor->mount_monitor,
	"mounts-changed", G_CALLBACK (mounts_changed),
	unix_monitor);

	g_signal_connect (unix_monitor->mount_monitor,
	"mountpoints-changed", G_CALLBACK (mountpoints_changed),
	unix_monitor);

	_g_unix_volume_monitor_update (unix_monitor);
	}

	GVolumeMonitor *
	_g_unix_volume_monitor_new (void)
	{
	GUnixVolumeMonitor *monitor;

	monitor = g_object_new (G_TYPE_UNIX_VOLUME_MONITOR, NULL);

	return G_VOLUME_MONITOR (monitor);
	}

	static void
	diff_sorted_lists (GList *list1,
	GList *list2,
	GCompareFunc compare,
	GList **added,
	GList **removed)
	{
	int order;

	added = removed = NULL;

	while (list1 != NULL &&
	list2 != NULL)
	{
	order = (*compare) (list1->data, list2->data);
	if (order < 0)
	{
	removed = g_list_prepend (removed, list1->data);
	list1 = list1->next;
	}
	else if (order > 0)
	{
	added = g_list_prepend (added, list2->data);
	list2 = list2->next;
	}
	else
	{ /* same item */
	list1 = list1->next;
	list2 = list2->next;
	}
	}

	while (list1 != NULL)
	{
	removed = g_list_prepend (removed, list1->data);
	list1 = list1->next;
	}
	while (list2 != NULL)
	{
	added = g_list_prepend (added, list2->data);
	list2 = list2->next;
	}
	}

	GUnixVolume *
	_g_unix_volume_monitor_lookup_volume_for_mount_path (GUnixVolumeMonitor *monitor,
	const char *mount_path)
	{
	GList *l;

	for (l = monitor->volumes; l != NULL; l = l->next)
	{
	GUnixVolume *volume = l->data;

	if (_g_unix_volume_has_mount_path (volume, mount_path))
	return volume;
	}

	return NULL;
	}

	static GUnixMount *
	find_mount_by_mountpath (GUnixVolumeMonitor *monitor,
	const char *mount_path)
	{
	GList *l;

	for (l = monitor->mounts; l != NULL; l = l->next)
	{
	GUnixMount *mount = l->data;

	if (_g_unix_mount_has_mount_path (mount, mount_path))
	return mount;
	}

	return NULL;
	}

	static void
	update_volumes (GUnixVolumeMonitor *monitor)
	{
	GList *new_mountpoints;
	GList removed, added;
	GList *l;
	GUnixVolume *volume;

	new_mountpoints = g_unix_mount_points_get (NULL);

	new_mountpoints = g_list_sort (new_mountpoints, (GCompareFunc) g_unix_mount_point_compare);

	diff_sorted_lists (monitor->last_mountpoints,
	new_mountpoints, (GCompareFunc) g_unix_mount_point_compare,
	&added, &removed);

	for (l = removed; l != NULL; l = l->next)
	{
	GUnixMountPoint *mountpoint = l->data;

	volume = _g_unix_volume_monitor_lookup_volume_for_mount_path (monitor,
	g_unix_mount_point_get_mount_path (mountpoint));
	if (volume)
	{
	_g_unix_volume_disconnected (volume);
	monitor->volumes = g_list_remove (monitor->volumes, volume);
	g_signal_emit_by_name (monitor, "volume-removed", volume);
	g_signal_emit_by_name (volume, "removed");
	g_object_unref (volume);
	}
	}

	for (l = added; l != NULL; l = l->next)
	{
	GUnixMountPoint *mountpoint = l->data;

	volume = _g_unix_volume_new (G_VOLUME_MONITOR (monitor), mountpoint);
	if (volume)
	{
	monitor->volumes = g_list_prepend (monitor->volumes, volume);
	g_signal_emit_by_name (monitor, "volume-added", volume);
	}
	}

	g_list_free (added);
	g_list_free (removed);
	g_list_free_full (monitor->last_mountpoints, (GDestroyNotify) g_unix_mount_point_free);
	monitor->last_mountpoints = new_mountpoints;
	}

	static void
	update_mounts (GUnixVolumeMonitor *monitor)
	{
	GList *new_mounts;
	GList removed, added;
	GList *l;
	GUnixMount *mount;
	GUnixVolume *volume;
	const char *mount_path;

	new_mounts = g_unix_mounts_get (NULL);

	new_mounts = g_list_sort (new_mounts, (GCompareFunc) g_unix_mount_compare);

	diff_sorted_lists (monitor->last_mounts,
	new_mounts, (GCompareFunc) g_unix_mount_compare,
	&added, &removed);

	for (l = removed; l != NULL; l = l->next)
	{
	GUnixMountEntry *mount_entry = l->data;

	mount = find_mount_by_mountpath (monitor, g_unix_mount_get_mount_path (mount_entry));
	if (mount)
	{
	_g_unix_mount_unmounted (mount);
	monitor->mounts = g_list_remove (monitor->mounts, mount);
	g_signal_emit_by_name (monitor, "mount-removed", mount);
	g_signal_emit_by_name (mount, "unmounted");
	g_object_unref (mount);
	}
	}

	for (l = added; l != NULL; l = l->next)
	{
	GUnixMountEntry *mount_entry = l->data;

	mount_path = g_unix_mount_get_mount_path (mount_entry);

	volume = _g_unix_volume_monitor_lookup_volume_for_mount_path (monitor, mount_path);
	mount = _g_unix_mount_new (G_VOLUME_MONITOR (monitor), mount_entry, volume);
	if (mount)
	{
	monitor->mounts = g_list_prepend (monitor->mounts, mount);
	g_signal_emit_by_name (monitor, "mount-added", mount);
	}
	}

	g_list_free (added);
	g_list_free (removed);
	g_list_free_full (monitor->last_mounts, (GDestroyNotify) g_unix_mount_free);
	monitor->last_mounts = new_mounts;
	}