glib/gio/gunixvolumemonitor.c
Matthias Clasen a2ca589703 More coding style fixes
svn path=/trunk/; revision=5999
2007-11-30 05:11:25 +00:00

388 lines
9.8 KiB
C

/* 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 <alexl@redhat.com>
*/
#include <config.h>
#include <string.h>
#include <glib.h>
#include "gunixvolumemonitor.h"
#include "gunixmounts.h"
#include "gunixvolume.h"
#include "gunixdrive.h"
#include "gvolumeprivate.h"
#include "glibintl.h"
#include "gioalias.h"
struct _GUnixVolumeMonitor {
GNativeVolumeMonitor parent;
GUnixMountMonitor *mount_monitor;
GList *last_mountpoints;
GList *last_mounts;
GList *drives;
GList *volumes;
};
static void mountpoints_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data);
static void mounts_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data);
static void update_drives (GUnixVolumeMonitor *monitor);
static void update_volumes (GUnixVolumeMonitor *monitor);
#define g_unix_volume_monitor_get_type _g_unix_volume_monitor_get_type
G_DEFINE_TYPE (GUnixVolumeMonitor, g_unix_volume_monitor, G_TYPE_NATIVE_VOLUME_MONITOR);
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_foreach (monitor->last_mounts, (GFunc)g_unix_mount_free, NULL);
g_list_free (monitor->last_mounts);
g_list_foreach (monitor->volumes, (GFunc)g_object_unref, NULL);
g_list_free (monitor->volumes);
g_list_foreach (monitor->drives, (GFunc)g_object_unref, NULL);
g_list_free (monitor->drives);
if (G_OBJECT_CLASS (g_unix_volume_monitor_parent_class)->finalize)
(*G_OBJECT_CLASS (g_unix_volume_monitor_parent_class)->finalize) (object);
}
static GList *
get_mounted_volumes (GVolumeMonitor *volume_monitor)
{
GUnixVolumeMonitor *monitor;
GList *l;
monitor = G_UNIX_VOLUME_MONITOR (volume_monitor);
l = g_list_copy (monitor->volumes);
g_list_foreach (l, (GFunc)g_object_ref, NULL);
return l;
}
static GList *
get_connected_drives (GVolumeMonitor *volume_monitor)
{
GUnixVolumeMonitor *monitor;
GList *l;
monitor = G_UNIX_VOLUME_MONITOR (volume_monitor);
l = g_list_copy (monitor->drives);
g_list_foreach (l, (GFunc)g_object_ref, NULL);
return l;
}
static GVolume *
get_volume_for_mountpoint (const char *mountpoint)
{
GUnixMount *mount;
GUnixVolume *volume;
mount = g_get_unix_mount_at (mountpoint, NULL);
/* TODO: Set drive? */
volume = _g_unix_volume_new (mount, NULL);
return G_VOLUME (volume);
}
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;
monitor_class->get_mounted_volumes = get_mounted_volumes;
monitor_class->get_connected_drives = get_connected_drives;
native_class->priority = 0;
native_class->get_volume_for_mountpoint = get_volume_for_mountpoint;
}
static void
mountpoints_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data)
{
GUnixVolumeMonitor *unix_monitor = user_data;
/* Update both to make sure drives are created before volumes */
update_drives (unix_monitor);
update_volumes (unix_monitor);
}
static void
mounts_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data)
{
GUnixVolumeMonitor *unix_monitor = user_data;
/* Update both to make sure drives are created before volumes */
update_drives (unix_monitor);
update_volumes (unix_monitor);
}
static void
g_unix_volume_monitor_init (GUnixVolumeMonitor *unix_monitor)
{
unix_monitor->mount_monitor = g_unix_mount_monitor_new ();
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);
update_drives (unix_monitor);
update_volumes (unix_monitor);
}
/**
* g_unix_volume_monitor_new:
*
* Returns: a new #GVolumeMonitor.
**/
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;
}
}
/**
* g_unix_volume_lookup_drive_for_mountpoint:
* @monitor:
* @mountpoint:
*
* Returns: #GUnixDrive for the given @mountpoint.
**/
GUnixDrive *
_g_unix_volume_monitor_lookup_drive_for_mountpoint (GUnixVolumeMonitor *monitor,
const char *mountpoint)
{
GList *l;
for (l = monitor->drives; l != NULL; l = l->next)
{
GUnixDrive *drive = l->data;
if (_g_unix_drive_has_mountpoint (drive, mountpoint))
return drive;
}
return NULL;
}
static GUnixVolume *
find_volume_by_mountpoint (GUnixVolumeMonitor *monitor,
const char *mountpoint)
{
GList *l;
for (l = monitor->volumes; l != NULL; l = l->next)
{
GUnixVolume *volume = l->data;
if (_g_unix_volume_has_mountpoint (volume, mountpoint))
return volume;
}
return NULL;
}
static void
update_drives (GUnixVolumeMonitor *monitor)
{
GList *new_mountpoints;
GList *removed, *added;
GList *l;
GUnixDrive *drive;
new_mountpoints = g_get_unix_mount_points (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;
drive = _g_unix_volume_monitor_lookup_drive_for_mountpoint (monitor,
g_unix_mount_point_get_mount_path (mountpoint));
if (drive)
{
_g_unix_drive_disconnected (drive);
monitor->drives = g_list_remove (monitor->drives, drive);
g_signal_emit_by_name (monitor, "drive_disconnected", drive);
g_object_unref (drive);
}
}
for (l = added; l != NULL; l = l->next)
{
GUnixMountPoint *mountpoint = l->data;
drive = _g_unix_drive_new (G_VOLUME_MONITOR (monitor), mountpoint);
if (drive)
{
monitor->drives = g_list_prepend (monitor->drives, drive);
g_signal_emit_by_name (monitor, "drive_connected", drive);
}
}
g_list_free (added);
g_list_free (removed);
g_list_foreach (monitor->last_mountpoints,
(GFunc)g_unix_mount_point_free, NULL);
g_list_free (monitor->last_mountpoints);
monitor->last_mountpoints = new_mountpoints;
}
static void
update_volumes (GUnixVolumeMonitor *monitor)
{
GList *new_mounts;
GList *removed, *added;
GList *l;
GUnixVolume *volume;
GUnixDrive *drive;
const char *mount_path;
new_mounts = g_get_unix_mounts (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)
{
GUnixMount *mount = l->data;
volume = find_volume_by_mountpoint (monitor, g_unix_mount_get_mount_path (mount));
if (volume)
{
_g_unix_volume_unmounted (volume);
monitor->volumes = g_list_remove (monitor->volumes, volume);
g_signal_emit_by_name (monitor, "volume_unmounted", volume);
g_object_unref (volume);
}
}
for (l = added; l != NULL; l = l->next)
{
GUnixMount *mount = l->data;
mount_path = g_unix_mount_get_mount_path (mount);
drive = _g_unix_volume_monitor_lookup_drive_for_mountpoint (monitor,
mount_path);
volume = _g_unix_volume_new (mount, drive);
if (volume)
{
monitor->volumes = g_list_prepend (monitor->volumes, volume);
g_signal_emit_by_name (monitor, "volume_mounted", volume);
}
}
g_list_free (added);
g_list_free (removed);
g_list_foreach (monitor->last_mounts,
(GFunc)g_unix_mount_free, NULL);
g_list_free (monitor->last_mounts);
monitor->last_mounts = new_mounts;
}