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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2009 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 <errno.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <netlink/genl/family.h>
#include <bluetooth/bluetooth.h>
#include <glib.h>
#include "plugin.h"
#include "logging.h"
static struct nl_handle *handle;
static struct nl_cache *cache;
static struct genl_family *family;
static GIOChannel *channel;
static gboolean channel_callback(GIOChannel *chan,
GIOCondition cond, void *user_data)
{
int err;
if (cond & (G_IO_ERR | G_IO_HUP | G_IO_NVAL))
return FALSE;
debug("Message available on netlink channel");
err = nl_recvmsgs_default(handle);
return TRUE;
}
static int create_channel(int fd)
{
channel = g_io_channel_unix_new(fd);
if (channel == NULL)
return -ENOMEM;
g_io_add_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
channel_callback, NULL);
return 0;
}
static int netlink_init(void)
{
info("Starting experimental netlink support");
handle = nl_handle_alloc();
if (!handle) {
error("Failed to allocate netlink handle");
return -ENOMEM;
}
if (genl_connect(handle) < 0) {
error("Failed to connect to generic netlink");
nl_handle_destroy(handle);
return -ENOLINK;
}
cache = genl_ctrl_alloc_cache(handle);
if (!cache) {
error("Failed to allocate generic netlink cache");
return -ENOMEM;
nl_handle_destroy(handle);
}
family = genl_ctrl_search_by_name(cache, "bluetooth");
if (!family) {
error("Failed to find Bluetooth netlink family");
nl_cache_free(cache);
nl_handle_destroy(handle);
return -ENOENT;
}
if (create_channel(nl_socket_get_fd(handle)) < 0) {
error("Failed to create netlink IO channel");
genl_family_put(family);
nl_cache_free(cache);
nl_handle_destroy(handle);
return -ENOMEM;
}
return 0;
}
static void netlink_exit(void)
{
g_io_channel_unref(channel);
genl_family_put(family);
nl_cache_free(cache);
nl_handle_destroy(handle);
}
BLUETOOTH_PLUGIN_DEFINE("netlink", netlink_init, netlink_exit)
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