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 <sys/inotify.h>
33 #include <gio/glocalfile.h>
34 #include <gio/gfilemonitor.h>
35 #include <gio/gfile.h>
36 #include "inotify-helper.h"
37 #include "inotify-missing.h"
38 #include "inotify-path.h"
39 #include "inotify-diag.h"
44 static gboolean ih_debug_enabled = FALSE;
45 #define IH_W if (ih_debug_enabled) g_warning
47 static void ih_event_callback (ik_event_t *event, inotify_sub *sub);
48 static void ih_not_missing_callback (inotify_sub *sub);
50 /* We share this lock with inotify-kernel.c and inotify-missing.c
52 * inotify-kernel.c takes the lock when it reads events from
53 * the kernel and when it processes those events
55 * inotify-missing.c takes the lock when it is scanning the missing
58 * We take the lock in all public functions
60 G_GNUC_INTERNAL G_LOCK_DEFINE (inotify_lock);
62 static GFileMonitorEvent ih_mask_to_EventFlags (guint32 mask);
67 * Initializes the inotify backend. This must be called before
68 * any other functions in this module.
70 * Return value: #TRUE if initialization succeeded, #FALSE otherwise
75 static gboolean initialized = FALSE;
76 static gboolean result = FALSE;
78 G_LOCK (inotify_lock);
80 if (initialized == TRUE)
82 G_UNLOCK (inotify_lock);
86 result = _ip_startup (ih_event_callback);
89 g_warning ("Could not initialize inotify\n");
90 G_UNLOCK (inotify_lock);
93 _im_startup (ih_not_missing_callback);
96 IH_W ("started gvfs inotify backend\n");
100 G_UNLOCK (inotify_lock);
106 * Adds a subscription to be monitored.
109 _ih_sub_add (inotify_sub *sub)
111 G_LOCK (inotify_lock);
113 if (!_ip_start_watching (sub))
116 G_UNLOCK (inotify_lock);
121 * Cancels a subscription which was being monitored.
124 _ih_sub_cancel (inotify_sub *sub)
126 G_LOCK (inotify_lock);
130 IH_W ("cancelling %s\n", sub->dirname);
131 sub->cancelled = TRUE;
133 _ip_stop_watching (sub);
136 G_UNLOCK (inotify_lock);
143 ih_event_callback (ik_event_t *event,
147 GFileMonitorEvent eflags;
151 eflags = ih_mask_to_EventFlags (event->mask);
152 parent = g_file_new_for_path (sub->dirname);
154 fullpath = g_strdup_printf ("%s/%s", sub->dirname, event->name);
156 fullpath = g_strdup_printf ("%s/", sub->dirname);
158 child = g_file_new_for_path (fullpath);
161 g_file_monitor_emit_event (G_FILE_MONITOR (sub->user_data),
162 child, NULL, eflags);
164 g_object_unref (child);
165 g_object_unref (parent);
169 ih_not_missing_callback (inotify_sub *sub)
172 GFileMonitorEvent eflags;
177 parent = g_file_new_for_path (sub->dirname);
181 fullpath = g_strdup_printf ("%s/%s", sub->dirname, sub->filename);
182 g_warning ("Missing callback called fullpath = %s\n", fullpath);
183 if (!g_file_test (fullpath, G_FILE_TEST_EXISTS))
192 fullpath = g_strdup_printf ("%s", sub->dirname);
193 mask = IN_CREATE|IN_ISDIR;
196 eflags = ih_mask_to_EventFlags (mask);
197 child = g_file_new_for_path (fullpath);
200 g_file_monitor_emit_event (G_FILE_MONITOR (sub->user_data),
201 child, NULL, eflags);
203 g_object_unref (child);
204 g_object_unref (parent);
207 /* Transforms a inotify event to a GVFS event. */
208 static GFileMonitorEvent
209 ih_mask_to_EventFlags (guint32 mask)
215 return G_FILE_MONITOR_EVENT_CHANGED;
217 return G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT;
219 return G_FILE_MONITOR_EVENT_ATTRIBUTE_CHANGED;
224 return G_FILE_MONITOR_EVENT_DELETED;
227 return G_FILE_MONITOR_EVENT_CREATED;
229 return G_FILE_MONITOR_EVENT_UNMOUNTED;
232 case IN_CLOSE_NOWRITE: