glib/gio/glocaldirectorymonitor.c

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/* 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 "glocaldirectorymonitor.h"
#include "gunixmounts.h"
#include "giomodule-priv.h"
#include "gfile.h"
#include "gioerror.h"
#include "glibintl.h"
#include <string.h>
enum
{
PROP_0,
PROP_DIRNAME,
PROP_FLAGS
};
static gboolean g_local_directory_monitor_cancel (GFileMonitor *monitor);
static void mounts_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data);
G_DEFINE_ABSTRACT_TYPE (GLocalDirectoryMonitor, g_local_directory_monitor, G_TYPE_FILE_MONITOR)
static void
g_local_directory_monitor_finalize (GObject *object)
{
GLocalDirectoryMonitor *local_monitor;
local_monitor = G_LOCAL_DIRECTORY_MONITOR (object);
g_free (local_monitor->dirname);
if (local_monitor->mount_monitor)
{
g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
g_object_unref (local_monitor->mount_monitor);
local_monitor->mount_monitor = NULL;
}
G_OBJECT_CLASS (g_local_directory_monitor_parent_class)->finalize (object);
}
static void
g_local_directory_monitor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case PROP_DIRNAME:
/* Do nothing */
break;
case PROP_FLAGS:
/* Do nothing */
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GObject *
g_local_directory_monitor_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_properties)
{
GObject *obj;
GLocalDirectoryMonitorClass *klass;
GObjectClass *parent_class;
GLocalDirectoryMonitor *local_monitor;
GFileMonitorFlags flags = 0;
const gchar *dirname = NULL;
gint i;
klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_type_class_peek (G_TYPE_LOCAL_DIRECTORY_MONITOR));
parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
obj = parent_class->constructor (type,
n_construct_properties,
construct_properties);
local_monitor = G_LOCAL_DIRECTORY_MONITOR (obj);
for (i = 0; i < n_construct_properties; i++)
{
if (strcmp ("dirname", g_param_spec_get_name (construct_properties[i].pspec)) == 0)
{
g_warn_if_fail (G_VALUE_HOLDS_STRING (construct_properties[i].value));
dirname = g_value_get_string (construct_properties[i].value);
}
if (strcmp ("flags", g_param_spec_get_name (construct_properties[i].pspec)) == 0)
{
g_warn_if_fail (G_VALUE_HOLDS_FLAGS (construct_properties[i].value));
flags = g_value_get_flags (construct_properties[i].value);
}
}
local_monitor->dirname = g_strdup (dirname);
local_monitor->flags = flags;
if (!klass->mount_notify &&
(flags & G_FILE_MONITOR_WATCH_MOUNTS))
{
#ifdef G_OS_WIN32
/*claim everything was mounted */
local_monitor->was_mounted = TRUE;
#else
Rework how volumes, drives and volume monitoring is done. Previosly the 2007-12-11 David Zeuthen <davidz@redhat.com> Rework how volumes, drives and volume monitoring is done. Previosly the model was GDrive <1-1> GVolume where a GDrive instance represented a mount point and a GVolume instance represented a mounted file system. This patch changes it the model to GDrive <1-N> GVolume <1-1> GMount where GMount now serves the purpose of the old GVolume and the new GVolume serves the purpose of the old GDrive. In addition the new GDrive interface is used to represent a collection of GVolume instances (typically partitions) and also contains utility to query the state of the physical drive the GDrive object represents (such as checking for media, polling the drive, ejecting the media etc.). Also implement mounting and unmounting in the Unix volume monitor backend. A subquent patch will introduce GDrive support for ejection of media. * Makefile.am: * gdrive.c: (g_drive_is_media_check_automatic), (g_drive_is_media_removable), (g_drive_has_media), (g_drive_can_poll_for_media), (g_drive_eject), (g_drive_eject_finish), (g_drive_poll_for_media), (g_drive_poll_for_media_finish): * gdrive.h: * gfile.c: (g_file_find_enclosing_mount): * gfile.h: * gio.symbols: * glocaldirectorymonitor.c: (g_local_directory_monitor_constructor), (mounts_changed): * glocalfile.c: (get_mount_info), (g_local_file_find_enclosing_mount), (g_local_file_file_iface_init): * gnativevolumemonitor.h: * gunionvolumemonitor.c: (get_mounts), (get_volumes), (get_connected_drives), (g_union_volume_monitor_class_init), (child_volume_added), (child_volume_removed), (child_volume_changed), (child_mount_added), (child_mount_removed), (child_mount_pre_unmount), (child_mount_changed), (child_drive_changed), (g_union_volume_monitor_add_monitor), (g_union_volume_monitor_remove_monitor), (_g_mount_get_for_mount_path): * gunixmounts.c: (g_unix_is_mount_path_system_internal), (guess_system_internal), (_g_get_unix_mounts), (_g_get_unix_mount_points), (g_get_unix_mount_at), (g_unix_mount_free), (g_unix_mount_compare), (g_unix_mount_get_mount_path), (g_unix_mount_get_device_path), (g_unix_mount_get_fs_type), (g_unix_mount_is_readonly), (g_unix_mount_is_system_internal), (g_unix_mount_guess_type), (type_to_icon), (g_unix_mount_guess_name), (g_unix_mount_guess_icon), (g_unix_mount_point_guess_name), (g_unix_mount_point_guess_icon), (_canonicalize_filename), (_resolve_symlink), (_resolve_dev_root): * gunixmounts.h: * gunixvolume.c: (g_unix_volume_finalize), (_g_unix_volume_new), (_g_unix_volume_disconnected), (_g_unix_volume_set_mount), (_g_unix_volume_unset_mount), (g_unix_volume_get_icon), (g_unix_volume_get_name), (g_unix_volume_can_mount), (g_unix_volume_get_drive), (g_unix_volume_get_mount), (_g_unix_volume_has_mount_path), (mount_cb), (mount_read_error), (g_unix_volume_mount), (g_unix_volume_mount_finish), (g_unix_volume_volume_iface_init): * gunixvolume.h: * gunixvolumemonitor.c: (g_unix_volume_monitor_finalize), (get_mounts), (get_volumes), (get_connected_drives), (get_mount_for_mount_path), (g_unix_volume_monitor_class_init), (mountpoints_changed), (mounts_changed), (g_unix_volume_monitor_init), (_g_unix_volume_monitor_lookup_volume_for_mount_path), (find_mount_by_mountpath), (update_volumes), (update_mounts): * gunixvolumemonitor.h: * gvolume.c: (g_volume_get_mount), (g_volume_can_mount), (g_volume_mount), (g_volume_mount_finish): * gvolume.h: * gvolumemonitor.c: (g_volume_monitor_class_init), (g_volume_monitor_get_connected_drives), (g_volume_monitor_get_volumes), (g_volume_monitor_get_mounts): * gvolumemonitor.h: svn path=/trunk/; revision=6095
2007-12-11 22:23:55 +01:00
GUnixMountEntry *mount;
/* Emulate unmount detection */
mount = g_unix_mount_at (local_monitor->dirname, NULL);
local_monitor->was_mounted = mount != NULL;
if (mount)
g_unix_mount_free (mount);
local_monitor->mount_monitor = g_unix_mount_monitor_new ();
g_signal_connect_object (local_monitor->mount_monitor, "mounts-changed",
G_CALLBACK (mounts_changed), local_monitor, 0);
#endif
}
return obj;
}
static void
g_local_directory_monitor_class_init (GLocalDirectoryMonitorClass* klass)
{
GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
gobject_class->finalize = g_local_directory_monitor_finalize;
gobject_class->set_property = g_local_directory_monitor_set_property;
gobject_class->constructor = g_local_directory_monitor_constructor;
file_monitor_class->cancel = g_local_directory_monitor_cancel;
g_object_class_install_property (gobject_class,
PROP_DIRNAME,
g_param_spec_string ("dirname",
P_("Directory name"),
P_("Directory to monitor"),
NULL,
G_PARAM_CONSTRUCT_ONLY|
G_PARAM_WRITABLE|
G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
g_object_class_install_property (gobject_class,
PROP_FLAGS,
g_param_spec_flags ("flags",
P_("Monitor flags"),
P_("Monitor flags"),
G_TYPE_FILE_MONITOR_FLAGS,
0,
G_PARAM_CONSTRUCT_ONLY|
G_PARAM_WRITABLE|
G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
klass->mount_notify = FALSE;
}
static void
g_local_directory_monitor_init (GLocalDirectoryMonitor *local_monitor)
{
}
static void
mounts_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data)
{
GLocalDirectoryMonitor *local_monitor = user_data;
#ifdef G_OS_UNIX
Rework how volumes, drives and volume monitoring is done. Previosly the 2007-12-11 David Zeuthen <davidz@redhat.com> Rework how volumes, drives and volume monitoring is done. Previosly the model was GDrive <1-1> GVolume where a GDrive instance represented a mount point and a GVolume instance represented a mounted file system. This patch changes it the model to GDrive <1-N> GVolume <1-1> GMount where GMount now serves the purpose of the old GVolume and the new GVolume serves the purpose of the old GDrive. In addition the new GDrive interface is used to represent a collection of GVolume instances (typically partitions) and also contains utility to query the state of the physical drive the GDrive object represents (such as checking for media, polling the drive, ejecting the media etc.). Also implement mounting and unmounting in the Unix volume monitor backend. A subquent patch will introduce GDrive support for ejection of media. * Makefile.am: * gdrive.c: (g_drive_is_media_check_automatic), (g_drive_is_media_removable), (g_drive_has_media), (g_drive_can_poll_for_media), (g_drive_eject), (g_drive_eject_finish), (g_drive_poll_for_media), (g_drive_poll_for_media_finish): * gdrive.h: * gfile.c: (g_file_find_enclosing_mount): * gfile.h: * gio.symbols: * glocaldirectorymonitor.c: (g_local_directory_monitor_constructor), (mounts_changed): * glocalfile.c: (get_mount_info), (g_local_file_find_enclosing_mount), (g_local_file_file_iface_init): * gnativevolumemonitor.h: * gunionvolumemonitor.c: (get_mounts), (get_volumes), (get_connected_drives), (g_union_volume_monitor_class_init), (child_volume_added), (child_volume_removed), (child_volume_changed), (child_mount_added), (child_mount_removed), (child_mount_pre_unmount), (child_mount_changed), (child_drive_changed), (g_union_volume_monitor_add_monitor), (g_union_volume_monitor_remove_monitor), (_g_mount_get_for_mount_path): * gunixmounts.c: (g_unix_is_mount_path_system_internal), (guess_system_internal), (_g_get_unix_mounts), (_g_get_unix_mount_points), (g_get_unix_mount_at), (g_unix_mount_free), (g_unix_mount_compare), (g_unix_mount_get_mount_path), (g_unix_mount_get_device_path), (g_unix_mount_get_fs_type), (g_unix_mount_is_readonly), (g_unix_mount_is_system_internal), (g_unix_mount_guess_type), (type_to_icon), (g_unix_mount_guess_name), (g_unix_mount_guess_icon), (g_unix_mount_point_guess_name), (g_unix_mount_point_guess_icon), (_canonicalize_filename), (_resolve_symlink), (_resolve_dev_root): * gunixmounts.h: * gunixvolume.c: (g_unix_volume_finalize), (_g_unix_volume_new), (_g_unix_volume_disconnected), (_g_unix_volume_set_mount), (_g_unix_volume_unset_mount), (g_unix_volume_get_icon), (g_unix_volume_get_name), (g_unix_volume_can_mount), (g_unix_volume_get_drive), (g_unix_volume_get_mount), (_g_unix_volume_has_mount_path), (mount_cb), (mount_read_error), (g_unix_volume_mount), (g_unix_volume_mount_finish), (g_unix_volume_volume_iface_init): * gunixvolume.h: * gunixvolumemonitor.c: (g_unix_volume_monitor_finalize), (get_mounts), (get_volumes), (get_connected_drives), (get_mount_for_mount_path), (g_unix_volume_monitor_class_init), (mountpoints_changed), (mounts_changed), (g_unix_volume_monitor_init), (_g_unix_volume_monitor_lookup_volume_for_mount_path), (find_mount_by_mountpath), (update_volumes), (update_mounts): * gunixvolumemonitor.h: * gvolume.c: (g_volume_get_mount), (g_volume_can_mount), (g_volume_mount), (g_volume_mount_finish): * gvolume.h: * gvolumemonitor.c: (g_volume_monitor_class_init), (g_volume_monitor_get_connected_drives), (g_volume_monitor_get_volumes), (g_volume_monitor_get_mounts): * gvolumemonitor.h: svn path=/trunk/; revision=6095
2007-12-11 22:23:55 +01:00
GUnixMountEntry *mount;
#endif
gboolean is_mounted;
GFile *file;
/* Emulate unmount detection */
#ifdef G_OS_UNIX
mount = g_unix_mount_at (local_monitor->dirname, NULL);
is_mounted = mount != NULL;
if (mount)
g_unix_mount_free (mount);
#else
/*claim everything was mounted */
is_mounted = TRUE;
#endif
if (local_monitor->was_mounted != is_mounted)
{
if (local_monitor->was_mounted && !is_mounted)
{
file = g_file_new_for_path (local_monitor->dirname);
g_file_monitor_emit_event (G_FILE_MONITOR (local_monitor),
file, NULL,
G_FILE_MONITOR_EVENT_UNMOUNTED);
g_object_unref (file);
}
local_monitor->was_mounted = is_mounted;
}
}
static gpointer
get_default_local_directory_monitor (gpointer data)
{
GLocalDirectoryMonitorClass *chosen_class;
GLocalDirectoryMonitorClass **ret = data;
GIOExtensionPoint *ep;
GList *extensions, *l;
_g_io_modules_ensure_loaded ();
ep = g_io_extension_point_lookup (G_LOCAL_DIRECTORY_MONITOR_EXTENSION_POINT_NAME);
extensions = g_io_extension_point_get_extensions (ep);
chosen_class = NULL;
for (l = extensions; l != NULL; l = l->next)
{
GIOExtension *extension = l->data;
GLocalDirectoryMonitorClass *klass;
klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_io_extension_ref_class (extension));
if (klass->is_supported ())
{
chosen_class = klass;
break;
}
else
g_type_class_unref (klass);
}
if (chosen_class)
{
*ret = chosen_class;
return (gpointer)G_TYPE_FROM_CLASS (chosen_class);
}
else
return (gpointer)G_TYPE_INVALID;
}
GFileMonitor*
_g_local_directory_monitor_new (const char *dirname,
GFileMonitorFlags flags,
GError **error)
{
static GOnce once_init = G_ONCE_INIT;
GTypeClass *type_class;
GFileMonitor *monitor;
GType type;
type_class = NULL;
g_once (&once_init, get_default_local_directory_monitor, &type_class);
type = (GType)once_init.retval;
monitor = NULL;
if (type != G_TYPE_INVALID)
monitor = G_FILE_MONITOR (g_object_new (type, "dirname", dirname, "flags", flags, NULL));
else
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Unable to find default local directory monitor type"));
/* This is non-null on first pass here. Unref the class now.
* This is to avoid unloading the module and then loading it
* again which would happen if we unrefed the class
* before creating the monitor.
*/
if (type_class)
g_type_class_unref (type_class);
return monitor;
}
static gboolean
g_local_directory_monitor_cancel (GFileMonitor *monitor)
{
GLocalDirectoryMonitor *local_monitor = G_LOCAL_DIRECTORY_MONITOR (monitor);
if (local_monitor->mount_monitor)
{
g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
g_object_unref (local_monitor->mount_monitor);
local_monitor->mount_monitor = NULL;
}
return TRUE;
}