1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 2; tab-width: 8 -*- */
3 /* inotify-helper.c - GVFS Monitor based on inotify.
5 Copyright (C) 2007 John McCutchan
7 The Gnome Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public License as
9 published by the Free Software Foundation; either version 2 of the
10 License, or (at your option) any later version.
12 The Gnome Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
17 You should have received a copy of the GNU Library General Public
18 License along with the Gnome Library; see the file COPYING.LIB. If not,
19 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
23 John McCutchan <john@johnmccutchan.com>
30 #include <sys/ioctl.h>
31 /* Just include the local header to stop all the pain */
32 #include "local_inotify.h"
34 #ifdef HAVE_SYS_INOTIFY_H
35 /* We don't actually include the libc header, because there has been
36 * problems with libc versions that was built without inotify support.
37 * Instead we use the local version.
39 #include "local_inotify.h"
40 #elif defined (HAVE_LINUX_INOTIFY_H)
41 #include <linux/inotify.h>
44 #include <gio/glocalfile.h>
45 #include <gio/gfilemonitor.h>
46 #include <gio/gdirectorymonitor.h>
47 #include "inotify-helper.h"
48 #include "inotify-missing.h"
49 #include "inotify-path.h"
50 #include "inotify-diag.h"
55 static gboolean ih_debug_enabled = FALSE;
56 #define IH_W if (ih_debug_enabled) g_warning
58 static void ih_event_callback (ik_event_t *event, inotify_sub *sub);
59 static void ih_not_missing_callback (inotify_sub *sub);
61 /* We share this lock with inotify-kernel.c and inotify-missing.c
63 * inotify-kernel.c takes the lock when it reads events from
64 * the kernel and when it processes those events
66 * inotify-missing.c takes the lock when it is scanning the missing
69 * We take the lock in all public functions
71 G_GNUC_INTERNAL G_LOCK_DEFINE (inotify_lock);
73 static GFileMonitorEvent ih_mask_to_EventFlags (guint32 mask);
78 * Initializes the inotify backend. This must be called before
79 * any other functions in this module.
81 * Return value: #TRUE if initialization succeeded, #FALSE otherwise
86 static gboolean initialized = FALSE;
87 static gboolean result = FALSE;
89 G_LOCK (inotify_lock);
91 if (initialized == TRUE)
93 G_UNLOCK (inotify_lock);
97 result = _ip_startup (ih_event_callback);
100 g_warning ("Could not initialize inotify\n");
101 G_UNLOCK (inotify_lock);
104 _im_startup (ih_not_missing_callback);
107 IH_W ("started gvfs inotify backend\n");
111 G_UNLOCK (inotify_lock);
117 * Adds a subscription to be monitored.
120 _ih_sub_add (inotify_sub * sub)
122 G_LOCK (inotify_lock);
124 if (!_ip_start_watching (sub))
127 G_UNLOCK (inotify_lock);
132 * Cancels a subscription which was being monitored.
135 _ih_sub_cancel (inotify_sub * sub)
137 G_LOCK (inotify_lock);
141 IH_W ("cancelling %s\n", sub->dirname);
142 sub->cancelled = TRUE;
144 _ip_stop_watching (sub);
147 G_UNLOCK (inotify_lock);
154 ih_event_callback (ik_event_t *event, inotify_sub *sub)
157 GFileMonitorEvent eflags;
161 eflags = ih_mask_to_EventFlags (event->mask);
162 parent = g_file_new_for_path (sub->dirname);
164 fullpath = g_strdup_printf ("%s/%s", sub->dirname, event->name);
166 fullpath = g_strdup_printf ("%s/", sub->dirname);
168 child = g_file_new_for_path (fullpath);
171 if (G_IS_DIRECTORY_MONITOR (sub->user_data))
173 GDirectoryMonitor* monitor = G_DIRECTORY_MONITOR (sub->user_data);
174 g_directory_monitor_emit_event (monitor,
175 child, NULL, eflags);
177 else if (G_IS_FILE_MONITOR (sub->user_data))
179 GFileMonitor* monitor = G_FILE_MONITOR (sub->user_data);
180 g_file_monitor_emit_event (monitor,
181 child, NULL, eflags);
184 g_object_unref (child);
185 g_object_unref (parent);
189 ih_not_missing_callback (inotify_sub *sub)
192 GFileMonitorEvent eflags;
197 parent = g_file_new_for_path (sub->dirname);
201 fullpath = g_strdup_printf ("%s/%s", sub->dirname, sub->filename);
202 g_warning ("Missing callback called fullpath = %s\n", fullpath);
203 if (!g_file_test (fullpath, G_FILE_TEST_EXISTS))
212 fullpath = g_strdup_printf ("%s", sub->dirname);
213 mask = IN_CREATE|IN_ISDIR;
216 eflags = ih_mask_to_EventFlags (mask);
217 child = g_file_new_for_path (fullpath);
220 if (G_IS_DIRECTORY_MONITOR (sub->user_data))
222 GDirectoryMonitor* monitor = G_DIRECTORY_MONITOR (sub->user_data);
223 g_directory_monitor_emit_event (monitor, child, NULL, eflags);
225 else if (G_IS_FILE_MONITOR (sub->user_data))
227 GFileMonitor* monitor = G_FILE_MONITOR (sub->user_data);
228 g_file_monitor_emit_event (monitor,
229 child, NULL, eflags);
232 g_object_unref (child);
233 g_object_unref (parent);
236 /* Transforms a inotify event to a GVFS event. */
237 static GFileMonitorEvent
238 ih_mask_to_EventFlags (guint32 mask)
244 return G_FILE_MONITOR_EVENT_CHANGED;
246 return G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT;
248 return G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED;
253 return G_FILE_MONITOR_EVENT_DELETED;
256 return G_FILE_MONITOR_EVENT_CREATED;
258 return G_FILE_MONITOR_EVENT_UNMOUNTED;
261 case IN_CLOSE_NOWRITE: