1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Authors: Alexander Larsson <alexl@redhat.com>
21 * John McCutchan <john@johnmccutchan.com>
22 * Sebastian Dröge <slomo@circular-chaos.org>
27 #include <gio/gfilemonitor.h>
29 #include "fam-helper.h"
31 static FAMConnection* fam_connection = NULL;
32 static gint fam_watch_id = 0;
33 G_LOCK_DEFINE_STATIC(fam_connection);
44 static GFileMonitorEvent
45 fam_event_to_file_monitor_event (enum FAMCodes code)
50 return G_FILE_MONITOR_EVENT_CHANGED;
53 return G_FILE_MONITOR_EVENT_DELETED;
56 return G_FILE_MONITOR_EVENT_CREATED;
65 fam_do_iter_unlocked (void)
67 while (fam_connection != NULL && FAMPending (fam_connection)) {
72 if (FAMNextEvent (fam_connection, &ev) != 1) {
73 FAMClose (fam_connection);
74 g_free (fam_connection);
75 g_source_remove (fam_watch_id);
77 fam_connection = NULL;
81 sub = (fam_sub*)ev.userdata;
82 cancelled = sub->cancelled;
83 if (ev.code == FAMAcknowledge && cancelled)
94 GFileMonitor* monitor = G_FILE_MONITOR (sub->user_data);
95 GFileMonitorEvent eflags = fam_event_to_file_monitor_event (ev.code);
97 GFile *child, *parent;
99 /* unsupported event */
103 if (ev.filename[0] == '/')
104 path = g_strdup (ev.filename);
106 path = g_strdup_printf ("%s/%s", sub->pathname, ev.filename);
108 child = g_file_new_for_path (path);
109 parent = g_file_get_parent (child);
110 g_file_monitor_emit_event (monitor, child, NULL, eflags);
112 g_object_unref (child);
113 g_object_unref (parent);
116 GFileMonitor* monitor = G_FILE_MONITOR (sub->user_data);
117 GFileMonitorEvent eflags = fam_event_to_file_monitor_event (ev.code);
122 path = g_strdup (ev.filename);
123 child = g_file_new_for_path (path);
124 g_file_monitor_emit_event (monitor, child, NULL, eflags);
126 g_object_unref (child);
134 fam_callback (GIOChannel *source,
135 GIOCondition condition,
139 G_LOCK (fam_connection);
141 res = fam_do_iter_unlocked ();
143 G_UNLOCK (fam_connection);
148 _fam_sub_startup (void)
152 G_LOCK (fam_connection);
154 if (fam_connection == NULL) {
155 fam_connection = g_new0 (FAMConnection, 1);
156 if (FAMOpen2 (fam_connection, "gvfs user") != 0) {
157 g_warning ("FAMOpen failed, FAMErrno=%d\n", FAMErrno);
158 g_free (fam_connection);
159 fam_connection = NULL;
160 G_UNLOCK (fam_connection);
163 #ifdef HAVE_FAM_NO_EXISTS
164 /* This is a gamin extension that avoids sending all the Exists event for dir monitors */
165 FAMNoExists (fam_connection);
167 ioc = g_io_channel_unix_new (FAMCONNECTION_GETFD(fam_connection));
168 fam_watch_id = g_io_add_watch (ioc,
169 G_IO_IN | G_IO_HUP | G_IO_ERR,
170 fam_callback, fam_connection);
171 g_io_channel_unref (ioc);
174 G_UNLOCK (fam_connection);
180 _fam_sub_add (const gchar* pathname,
186 if (!_fam_sub_startup ())
189 sub = g_new0 (fam_sub, 1);
190 sub->pathname = g_strdup (pathname);
191 sub->directory = directory;
192 sub->user_data = user_data;
194 G_LOCK (fam_connection);
195 /* We need to queue up incoming messages to avoid blocking on write
196 * if there are many monitors being canceled */
197 fam_do_iter_unlocked ();
199 if (fam_connection == NULL) {
200 G_UNLOCK (fam_connection);
205 FAMMonitorDirectory (fam_connection, pathname, &sub->request, sub);
207 FAMMonitorFile (fam_connection, pathname, &sub->request, sub);
209 G_UNLOCK (fam_connection);
214 _fam_sub_cancel (fam_sub* sub)
219 sub->cancelled = TRUE;
221 G_LOCK (fam_connection);
222 /* We need to queue up incoming messages to avoid blocking on write
223 * if there are many monitors being canceled */
224 fam_do_iter_unlocked ();
226 if (fam_connection == NULL) {
227 G_UNLOCK (fam_connection);
231 FAMCancelMonitor (fam_connection, &sub->request);
233 G_UNLOCK (fam_connection);
239 _fam_sub_free (fam_sub* sub)
241 g_free (sub->pathname);