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https://git.kernel.org/pub/scm/bluetooth/bluez.git
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128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
/*
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*
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* BlueZ - Bluetooth protocol stack for Linux
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*
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* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <errno.h>
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#include <netlink/netlink.h>
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#include <netlink/genl/genl.h>
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#include <netlink/genl/ctrl.h>
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#include <netlink/genl/family.h>
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#include <bluetooth/bluetooth.h>
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#include <glib.h>
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#include "plugin.h"
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#include "log.h"
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static struct nl_handle *handle;
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static struct nl_cache *cache;
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static struct genl_family *family;
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static GIOChannel *channel;
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static gboolean channel_callback(GIOChannel *chan,
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GIOCondition cond, void *user_data)
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{
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int err;
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if (cond & (G_IO_ERR | G_IO_HUP | G_IO_NVAL))
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return FALSE;
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DBG("Message available on netlink channel");
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err = nl_recvmsgs_default(handle);
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return TRUE;
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}
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static int create_channel(int fd)
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{
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channel = g_io_channel_unix_new(fd);
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if (channel == NULL)
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return -ENOMEM;
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g_io_add_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
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channel_callback, NULL);
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return 0;
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}
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static int netlink_init(void)
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{
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info("Starting experimental netlink support");
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handle = nl_handle_alloc();
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if (!handle) {
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error("Failed to allocate netlink handle");
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return -ENOMEM;
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}
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if (genl_connect(handle) < 0) {
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error("Failed to connect to generic netlink");
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nl_handle_destroy(handle);
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return -ENOLINK;
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}
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cache = genl_ctrl_alloc_cache(handle);
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if (!cache) {
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error("Failed to allocate generic netlink cache");
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nl_handle_destroy(handle);
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return -ENOMEM;
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}
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family = genl_ctrl_search_by_name(cache, "bluetooth");
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if (!family) {
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error("Failed to find Bluetooth netlink family");
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nl_cache_free(cache);
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nl_handle_destroy(handle);
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return -ENOENT;
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}
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if (create_channel(nl_socket_get_fd(handle)) < 0) {
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error("Failed to create netlink IO channel");
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genl_family_put(family);
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nl_cache_free(cache);
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nl_handle_destroy(handle);
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return -ENOMEM;
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}
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return 0;
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}
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static void netlink_exit(void)
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{
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g_io_channel_unref(channel);
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genl_family_put(family);
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nl_cache_free(cache);
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nl_handle_destroy(handle);
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}
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BLUETOOTH_PLUGIN_DEFINE(netlink, VERSION,
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BLUETOOTH_PLUGIN_PRIORITY_DEFAULT, netlink_init, netlink_exit)
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