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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 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 <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/stat.h>
#include <syslog.h>
#include <glib.h>
#ifdef HAVE_CAPNG
#include <cap-ng.h>
#endif
static GMainLoop *event_loop;
static void sig_term(int sig)
{
g_main_loop_quit(event_loop);
}
static gboolean option_detach = TRUE;
static gboolean option_debug = FALSE;
static GOptionEntry options[] = {
{ "nodaemon", 'n', G_OPTION_FLAG_REVERSE,
G_OPTION_ARG_NONE, &option_detach,
"Don't run as daemon in background" },
{ "debug", 'd', 0, G_OPTION_ARG_NONE, &option_debug,
"Enable debug information output" },
{ NULL },
};
static void debug(const char *format, ...)
{
va_list ap;
if (!option_debug)
return;
va_start(ap, format);
vsyslog(LOG_DEBUG, format, ap);
va_end(ap);
}
static void sig_debug(int sig)
{
option_debug = !option_debug;
}
int main(int argc, char *argv[])
{
GOptionContext *context;
GError *err = NULL;
struct sigaction sa;
#ifdef HAVE_CAPNG
/* Drop capabilities */
capng_clear(CAPNG_SELECT_BOTH);
capng_updatev(CAPNG_ADD, CAPNG_EFFECTIVE | CAPNG_PERMITTED,
CAP_NET_BIND_SERVICE, CAP_NET_ADMIN,
CAP_NET_RAW, CAP_IPC_LOCK, -1);
capng_apply(CAPNG_SELECT_BOTH);
#endif
context = g_option_context_new(NULL);
g_option_context_add_main_entries(context, options, NULL);
if (g_option_context_parse(context, &argc, &argv, &err) == FALSE) {
if (err != NULL) {
g_printerr("%s\n", err->message);
g_error_free(err);
} else
g_printerr("An unknown error occurred\n");
exit(1);
}
g_option_context_free(context);
if (option_detach == TRUE) {
if (daemon(0, 0)) {
perror("Can't start daemon");
exit(1);
}
}
umask(0077);
openlog("hcitrace", LOG_PID | LOG_NDELAY | LOG_PERROR, LOG_DAEMON);
syslog(LOG_INFO, "HCI trace deamon %s", VERSION);
memset(&sa, 0, sizeof(sa));
sa.sa_flags = SA_NOCLDSTOP;
sa.sa_handler = sig_term;
sigaction(SIGTERM, &sa, NULL);
sigaction(SIGINT, &sa, NULL);
sa.sa_handler = sig_debug;
sigaction(SIGUSR2, &sa, NULL);
sa.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &sa, NULL);
if (option_debug == TRUE) {
syslog(LOG_INFO, "Enabling debug information");
}
event_loop = g_main_loop_new(NULL, FALSE);
debug("Entering main loop");
g_main_loop_run(event_loop);
g_main_loop_unref(event_loop);
syslog(LOG_INFO, "Exit");
closelog();
return 0;
}
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