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>
28 #include <gio/gdirectorymonitor.h>
30 #include "fam-helper.h"
32 static FAMConnection* fam_connection = NULL;
33 static gint fam_watch_id = 0;
34 G_LOCK_DEFINE_STATIC(fam_connection);
45 static GFileMonitorEvent
46 fam_event_to_file_monitor_event (enum FAMCodes code)
51 return G_FILE_MONITOR_EVENT_CHANGED;
54 return G_FILE_MONITOR_EVENT_DELETED;
57 return G_FILE_MONITOR_EVENT_CREATED;
66 fam_do_iter_unlocked (void)
68 while (fam_connection != NULL && FAMPending (fam_connection)) {
73 if (FAMNextEvent (fam_connection, &ev) != 1) {
74 FAMClose (fam_connection);
75 g_free (fam_connection);
76 g_source_remove (fam_watch_id);
78 fam_connection = NULL;
82 sub = (fam_sub*)ev.userdata;
83 cancelled = sub->cancelled;
84 if (ev.code == FAMAcknowledge && cancelled)
95 GDirectoryMonitor* monitor = G_DIRECTORY_MONITOR (sub->user_data);
96 GFileMonitorEvent eflags = fam_event_to_file_monitor_event (ev.code);
98 GFile *child, *parent;
100 /* unsupported event */
104 if (ev.filename[0] == '/')
105 path = g_strdup (ev.filename);
107 path = g_strdup_printf ("%s/%s", sub->pathname, ev.filename);
109 child = g_file_new_for_path (path);
110 parent = g_file_get_parent (child);
111 g_directory_monitor_emit_event (monitor, child, NULL, eflags);
113 g_object_unref (child);
114 g_object_unref (parent);
117 GFileMonitor* monitor = G_FILE_MONITOR (sub->user_data);
118 GFileMonitorEvent eflags = fam_event_to_file_monitor_event (ev.code);
123 path = g_strdup (ev.filename);
124 child = g_file_new_for_path (path);
125 g_file_monitor_emit_event (monitor, child, NULL, eflags);
127 g_object_unref (child);
135 fam_callback (GIOChannel *source,
136 GIOCondition condition,
140 G_LOCK (fam_connection);
142 res = fam_do_iter_unlocked ();
144 G_UNLOCK (fam_connection);
149 _fam_sub_startup (void)
153 G_LOCK (fam_connection);
155 if (fam_connection == NULL) {
156 fam_connection = g_new0 (FAMConnection, 1);
157 if (FAMOpen2 (fam_connection, "gvfs user") != 0) {
158 g_warning ("FAMOpen failed, FAMErrno=%d\n", FAMErrno);
159 g_free (fam_connection);
160 fam_connection = NULL;
161 G_UNLOCK (fam_connection);
164 #ifdef HAVE_FAM_NO_EXISTS
165 /* This is a gamin extension that avoids sending all the Exists event for dir monitors */
166 FAMNoExists (fam_connection);
168 ioc = g_io_channel_unix_new (FAMCONNECTION_GETFD(fam_connection));
169 fam_watch_id = g_io_add_watch (ioc,
170 G_IO_IN | G_IO_HUP | G_IO_ERR,
171 fam_callback, fam_connection);
172 g_io_channel_unref (ioc);
175 G_UNLOCK (fam_connection);
181 _fam_sub_add (const gchar* pathname,
187 if (!_fam_sub_startup ())
190 sub = g_new0 (fam_sub, 1);
191 sub->pathname = g_strdup (pathname);
192 sub->directory = directory;
193 sub->user_data = user_data;
195 G_LOCK (fam_connection);
196 /* We need to queue up incoming messages to avoid blocking on write
197 * if there are many monitors being canceled */
198 fam_do_iter_unlocked ();
200 if (fam_connection == NULL) {
201 G_UNLOCK (fam_connection);
206 FAMMonitorDirectory (fam_connection, pathname, &sub->request, sub);
208 FAMMonitorFile (fam_connection, pathname, &sub->request, sub);
210 G_UNLOCK (fam_connection);
215 _fam_sub_cancel (fam_sub* sub)
220 sub->cancelled = TRUE;
222 G_LOCK (fam_connection);
223 /* We need to queue up incoming messages to avoid blocking on write
224 * if there are many monitors being canceled */
225 fam_do_iter_unlocked ();
227 if (fam_connection == NULL) {
228 G_UNLOCK (fam_connection);
232 FAMCancelMonitor (fam_connection, &sub->request);
234 G_UNLOCK (fam_connection);
240 _fam_sub_free (fam_sub* sub)
242 g_free (sub->pathname);