1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 * Copyright (C) 2007 Sebastian Dröge.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General
17 * Public License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
19 * Boston, MA 02111-1307, USA.
20 *
21 * Authors: Alexander Larsson <alexl@redhat.com>
22 * John McCutchan <john@johnmccutchan.com>
23 * Sebastian Dröge <slomo@circular-chaos.org>
24 */
25
26 #include "config.h"
27
28 #include "ginotifydirectorymonitor.h"
29 #include "giomodule.h"
30
31 #define USE_INOTIFY 1
32 #include "inotify-helper.h"
33
34 #include "gioalias.h"
35
36 struct _GInotifyDirectoryMonitor
37 {
38 GLocalDirectoryMonitor parent_instance;
39 inotify_sub *sub;
40 };
41
42 static gboolean g_inotify_directory_monitor_cancel (GFileMonitor* monitor);
43
44 #define g_inotify_directory_monitor_get_type _g_inotify_directory_monitor_get_type
45 G_DEFINE_TYPE_WITH_CODE (GInotifyDirectoryMonitor, g_inotify_directory_monitor, G_TYPE_LOCAL_DIRECTORY_MONITOR,
46 g_io_extension_point_implement (G_LOCAL_DIRECTORY_MONITOR_EXTENSION_POINT_NAME,
47 g_define_type_id,
48 "inotify",
49 20))
50
51 static void
g_inotify_directory_monitor_finalize(GObject * object)52 g_inotify_directory_monitor_finalize (GObject *object)
53 {
54 GInotifyDirectoryMonitor *inotify_monitor = G_INOTIFY_DIRECTORY_MONITOR (object);
55 inotify_sub *sub = inotify_monitor->sub;
56
57 if (sub)
58 {
59 _ih_sub_cancel (sub);
60 _ih_sub_free (sub);
61 inotify_monitor->sub = NULL;
62 }
63
64 if (G_OBJECT_CLASS (g_inotify_directory_monitor_parent_class)->finalize)
65 (*G_OBJECT_CLASS (g_inotify_directory_monitor_parent_class)->finalize) (object);
66 }
67
68 static GObject *
g_inotify_directory_monitor_constructor(GType type,guint n_construct_properties,GObjectConstructParam * construct_properties)69 g_inotify_directory_monitor_constructor (GType type,
70 guint n_construct_properties,
71 GObjectConstructParam *construct_properties)
72 {
73 GObject *obj;
74 GInotifyDirectoryMonitorClass *klass;
75 GObjectClass *parent_class;
76 GInotifyDirectoryMonitor *inotify_monitor;
77 const gchar *dirname = NULL;
78 inotify_sub *sub = NULL;
79
80 klass = G_INOTIFY_DIRECTORY_MONITOR_CLASS (g_type_class_peek (G_TYPE_INOTIFY_DIRECTORY_MONITOR));
81 parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
82 obj = parent_class->constructor (type,
83 n_construct_properties,
84 construct_properties);
85
86 inotify_monitor = G_INOTIFY_DIRECTORY_MONITOR (obj);
87
88 dirname = G_LOCAL_DIRECTORY_MONITOR (obj)->dirname;
89 g_assert (dirname != NULL);
90
91 /* Will never fail as is_supported() should be called before instanciating
92 * anyway */
93 g_assert (_ih_startup ());
94
95 sub = _ih_sub_new (dirname, NULL, inotify_monitor);
96 /* FIXME: what to do about errors here? we can't return NULL or another
97 * kind of error and an assertion is probably too hard */
98 g_assert (sub != NULL);
99 g_assert (_ih_sub_add (sub));
100
101 inotify_monitor->sub = sub;
102
103 return obj;
104 }
105
106 static gboolean
g_inotify_directory_monitor_is_supported(void)107 g_inotify_directory_monitor_is_supported (void)
108 {
109 return _ih_startup ();
110 }
111
112 static void
g_inotify_directory_monitor_class_init(GInotifyDirectoryMonitorClass * klass)113 g_inotify_directory_monitor_class_init (GInotifyDirectoryMonitorClass* klass)
114 {
115 GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
116 GFileMonitorClass *directory_monitor_class = G_FILE_MONITOR_CLASS (klass);
117 GLocalDirectoryMonitorClass *local_directory_monitor_class = G_LOCAL_DIRECTORY_MONITOR_CLASS (klass);
118
119 gobject_class->finalize = g_inotify_directory_monitor_finalize;
120 gobject_class->constructor = g_inotify_directory_monitor_constructor;
121 directory_monitor_class->cancel = g_inotify_directory_monitor_cancel;
122
123 local_directory_monitor_class->mount_notify = TRUE;
124 local_directory_monitor_class->is_supported = g_inotify_directory_monitor_is_supported;
125 }
126
127 static void
g_inotify_directory_monitor_init(GInotifyDirectoryMonitor * monitor)128 g_inotify_directory_monitor_init (GInotifyDirectoryMonitor* monitor)
129 {
130 }
131
132 static gboolean
g_inotify_directory_monitor_cancel(GFileMonitor * monitor)133 g_inotify_directory_monitor_cancel (GFileMonitor* monitor)
134 {
135 GInotifyDirectoryMonitor *inotify_monitor = G_INOTIFY_DIRECTORY_MONITOR (monitor);
136 inotify_sub *sub = inotify_monitor->sub;
137
138 if (sub)
139 {
140 _ih_sub_cancel (sub);
141 _ih_sub_free (sub);
142 inotify_monitor->sub = NULL;
143 }
144
145 if (G_FILE_MONITOR_CLASS (g_inotify_directory_monitor_parent_class)->cancel)
146 (*G_FILE_MONITOR_CLASS (g_inotify_directory_monitor_parent_class)->cancel) (monitor);
147
148 return TRUE;
149 }
150
151