| /* |
| * |
| * BlueZ - Bluetooth protocol stack for Linux |
| * |
| * Copyright (C) 2006-2007 Marcel Holtmann <marcel@holtmann.org> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/inotify.h> |
| |
| #ifndef IN_ONLYDIR |
| #define IN_ONLYDIR 0x01000000 |
| #endif |
| |
| #include <glib.h> |
| |
| #include "logging.h" |
| #include "notify.h" |
| |
| static GIOChannel *io = NULL; |
| |
| static int fd = -1; |
| static int wd = -1; |
| |
| static char *name = NULL; |
| |
| static notify_func callback = NULL; |
| |
| static gboolean io_event(GIOChannel *chan, GIOCondition cond, gpointer data) |
| { |
| unsigned char buf[129], *ptr = buf; |
| gsize len; |
| GIOError err; |
| |
| if (cond & (G_IO_HUP | G_IO_ERR)) |
| return FALSE; |
| |
| memset(buf, 0, sizeof(buf)); |
| |
| err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf) - 1, &len); |
| if (err == G_IO_ERROR_AGAIN) |
| return TRUE; |
| |
| while (len >= sizeof(struct inotify_event)) { |
| struct inotify_event *evt = (struct inotify_event *) ptr; |
| |
| if (evt->wd != wd || !callback) |
| continue; |
| |
| if (evt->mask & (IN_CREATE | IN_MOVED_TO)) |
| callback(NOTIFY_CREATE, evt->name, NULL); |
| |
| if (evt->mask & (IN_DELETE | IN_MOVED_FROM)) |
| callback(NOTIFY_DELETE, evt->name, NULL); |
| |
| if (evt->mask & IN_MODIFY) |
| callback(NOTIFY_MODIFY, evt->name, NULL); |
| |
| len -= sizeof(struct inotify_event) + evt->len; |
| ptr += sizeof(struct inotify_event) + evt->len; |
| } |
| |
| return TRUE; |
| } |
| |
| void notify_init(void) |
| { |
| if (fd != -1) |
| return; |
| |
| fd = inotify_init(); |
| if (fd < 0) { |
| error("Creation of inotify context failed"); |
| return; |
| } |
| |
| io = g_io_channel_unix_new(fd); |
| if (!io) { |
| error("Creation of inotify channel failed"); |
| return; |
| } |
| |
| g_io_add_watch(io, G_IO_IN | G_IO_ERR | G_IO_HUP, io_event, NULL); |
| } |
| |
| void notify_close(void) |
| { |
| if (fd == -1) |
| return; |
| |
| if (wd != -1) { |
| inotify_rm_watch(fd, wd); |
| wd = -1; |
| } |
| |
| if (io) { |
| g_io_channel_unref(io); |
| io = NULL; |
| } |
| |
| close(fd); |
| fd = -1; |
| |
| if (name) { |
| free(name); |
| name = NULL; |
| } |
| } |
| |
| void notify_add(const char *pathname, notify_func func, void *user_data) |
| { |
| if (fd == -1 || wd != -1) |
| return; |
| |
| if (name) |
| free(name); |
| |
| name = strdup(pathname); |
| if (!name) |
| return; |
| |
| wd = inotify_add_watch(fd, pathname, |
| IN_ONLYDIR | IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVE); |
| if (wd < 0) |
| error("Creation of watch for %s failed", pathname); |
| |
| callback = func; |
| } |
| |
| void notify_remove(const char *pathname) |
| { |
| if (fd == -1 || wd == -1) |
| return; |
| |
| inotify_rm_watch(fd, wd); |
| wd = -1; |
| |
| callback = NULL; |
| } |