[people/ms/rstp.git] / main.c

/*****************************************************************************
  Copyright (c) 2006 EMC Corporation.

  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., 59 
  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  
  The full GNU General Public License is included in this distribution in the
  file called LICENSE.

  Authors: Srinivas Aji <Aji_Srinivas@emc.com>

******************************************************************************/

#include "epoll_loop.h"
#include "bridge_ctl.h"
#include "ctl_socket_server.h"
#include "netif_utils.h"
#include "packet.h"
#include "log.h"

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <syslog.h>

static int become_daemon = 1;
static int is_daemon = 0;
int log_level = LOG_LEVEL_DEFAULT;

int main(int argc, char *argv[])
{
	int c;
	while ((c = getopt(argc, argv, "dv:")) != -1) {
		switch (c) {
		case 'd':
			become_daemon = 0;
			break;
		case 'v':
			{
				char *end;
				long l;
				l = strtoul(optarg, &end, 0);
				if (*optarg == 0 || *end != 0
				    || l > LOG_LEVEL_MAX) {
					ERROR("Invalid loglevel %s", optarg);
					exit(1);
				}
				log_level = l;
			}
			break;
		default:
			return -1;
		}
	}

	TST(init_epoll() == 0, -1);
	TST(ctl_socket_init() == 0, -1);
	TST(packet_sock_init() == 0, -1);
	TST(netsock_init() == 0, -1);
	TST(init_bridge_ops() == 0, -1);
	if (become_daemon) {
		openlog("rstpd", 0, LOG_DAEMON);
		daemon(0, 0);
		is_daemon = 1;
	}
	return epoll_main_loop();
}

/*********************** Logging *********************/

#include <stdarg.h>
#include <time.h>

void vDprintf(int level, const char *fmt, va_list ap)
{
	if (level > log_level)
		return;

	if (!is_daemon) {
		char logbuf[256];
		logbuf[255] = 0;
		time_t clock;
		struct tm *local_tm;
		time(&clock);
		local_tm = localtime(&clock);
		int l =
		    strftime(logbuf, sizeof(logbuf) - 1, "%F %T ", local_tm);
		vsnprintf(logbuf + l, sizeof(logbuf) - l - 1, fmt, ap);
		printf("%s\n", logbuf);
	} else {
		vsyslog((level <= LOG_LEVEL_INFO) ? LOG_INFO : LOG_DEBUG, fmt,
			ap);
	}
}

void Dprintf(int level, const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	vDprintf(level, fmt, ap);
	va_end(ap);
}
Commit	Line	Data
ad02a0eb SH	1	/*****************************************************************************
	2	Copyright (c) 2006 EMC Corporation.
	3
	4	This program is free software; you can redistribute it and/or modify it
	5	under the terms of the GNU General Public License as published by the Free
	6	Software Foundation; either version 2 of the License, or (at your option)
	7	any later version.
	8
	9	This program is distributed in the hope that it will be useful, but WITHOUT
	10	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	more details.
	13
	14	You should have received a copy of the GNU General Public License along with
	15	this program; if not, write to the Free Software Foundation, Inc., 59
	16	Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17
	18	The full GNU General Public License is included in this distribution in the
	19	file called LICENSE.
	20
	21	Authors: Srinivas Aji <Aji_Srinivas@emc.com>
	22
	23	******************************************************************************/
	24
	25	#include "epoll_loop.h"
	26	#include "bridge_ctl.h"
	27	#include "ctl_socket_server.h"
	28	#include "netif_utils.h"
fcea43ad	29	#include "packet.h"
ad02a0eb SH	30	#include "log.h"
	31
	32	#include <stdio.h>
	33	#include <stdlib.h>
	34	#include <unistd.h>
	35	#include <getopt.h>
	36	#include <syslog.h>
	37
	38	static int become_daemon = 1;
	39	static int is_daemon = 0;
	40	int log_level = LOG_LEVEL_DEFAULT;
	41
	42	int main(int argc, char *argv[])
	43	{
11904a35 SH	44	int c;
	45	while ((c = getopt(argc, argv, "dv:")) != -1) {
	46	switch (c) {
	47	case 'd':
	48	become_daemon = 0;
	49	break;
	50	case 'v':
	51	{
	52	char *end;
	53	long l;
	54	l = strtoul(optarg, &end, 0);
	55	if (optarg == 0 \|\| end != 0
	56	\|\| l > LOG_LEVEL_MAX) {
	57	ERROR("Invalid loglevel %s", optarg);
	58	exit(1);
	59	}
	60	log_level = l;
	61	}
	62	break;
	63	default:
	64	return -1;
	65	}
	66	}
	67
	68	TST(init_epoll() == 0, -1);
	69	TST(ctl_socket_init() == 0, -1);
fcea43ad	70	TST(packet_sock_init() == 0, -1);
11904a35 SH	71	TST(netsock_init() == 0, -1);
	72	TST(init_bridge_ops() == 0, -1);
	73	if (become_daemon) {
	74	openlog("rstpd", 0, LOG_DAEMON);
	75	daemon(0, 0);
	76	is_daemon = 1;
	77	}
	78	return epoll_main_loop();
ad02a0eb SH	79	}
	80
	81	/********************* Logging *******************/
	82
	83	#include <stdarg.h>
	84	#include <time.h>
	85
11904a35	86	void vDprintf(int level, const char *fmt, va_list ap)
ad02a0eb	87	{
11904a35 SH	88	if (level > log_level)
	89	return;
	90
	91	if (!is_daemon) {
	92	char logbuf[256];
	93	logbuf[255] = 0;
	94	time_t clock;
	95	struct tm *local_tm;
	96	time(&clock);
	97	local_tm = localtime(&clock);
	98	int l =
	99	strftime(logbuf, sizeof(logbuf) - 1, "%F %T ", local_tm);
	100	vsnprintf(logbuf + l, sizeof(logbuf) - l - 1, fmt, ap);
	101	printf("%s\n", logbuf);
	102	} else {
	103	vsyslog((level <= LOG_LEVEL_INFO) ? LOG_INFO : LOG_DEBUG, fmt,
	104	ap);
	105	}
ad02a0eb SH	106	}
ad02a0eb SH	107
11904a35	108	void Dprintf(int level, const char *fmt, ...)
ad02a0eb	109	{
11904a35 SH	110	va_list ap;
	111	va_start(ap, fmt);
	112	vDprintf(level, fmt, ap);
	113	va_end(ap);
ad02a0eb	114	}