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ltpx_main.c
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/******************************************************************************
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 2002-2003 All rights reserved.
** Copyright (C) 2004 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
** of the GNU General Public License v.2.
**
*******************************************************************************
******************************************************************************/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <execinfo.h>
#include "gulm_defines.h"
#include "config_gulm.h"
#include "ltpx_priv.h"
#include "ltpx.h"
#include "utils_dir.h"
/*****************************************************************************/
/* bits of data used by the log_*() and die() functions. */
extern uint32_t verbosity;
extern char *ProgramName;
/* other bits of interest */
extern gulm_config_t gulm_config;
extern int I_am_the;
extern struct in6_addr myIP;
/* */
/*****************************************************************************/
/**
* sigact_usr1 -
* @sig:
*
*/
static void sigact_usr1(int sig)
{
/* dump Lock Queues */
dump_all_master_tables();
}
/**
* sigact_segv -
* @sig:
*
* try to get a backtrace before we puke out.
* This may not always work, but since I cannot get daemons to drop core
* files, trying this is better than nothing.
*/
static void sigact_segv(int sig)
{
struct sigaction act;
void *array[200];
size_t size,i;
char **strings;
size = backtrace(array, 200);
strings = backtrace_symbols(array, size);
#ifndef DEBUG
syslog(LOG_NOTICE, "BACKTRACE\n");
#else
fprintf(stderr, "BACKTRACE\n");
#endif
for(i=0;i<size; i++)
#ifndef DEBUG
syslog(LOG_NOTICE, " %s\n", strings[i]);
#else
fprintf(stderr, " %s\n", strings[i]);
#endif
free(strings);
memset(&act,0,sizeof(act));
act.sa_handler = SIG_DFL;
sigaction(SIGSEGV, &act, NULL);
raise(SIGSEGV);
}
/**
* setupsignals - set how we respond to signals.
*/
static void setupsignals(void)
{
struct sigaction act;
memset(&act,0,sizeof(act));
act.sa_handler = SIG_IGN; /* use gulm_tool shutdown or kill -9 */
if( sigaction(SIGTERM, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGTERM handler: %s\n",strerror(errno));
memset(&act,0,sizeof(act));
act.sa_handler = sigact_usr1;
if( sigaction(SIGUSR1, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGUSR1 handler: %s\n",strerror(errno));
memset(&act,0,sizeof(act));
act.sa_handler = SIG_IGN;
if( sigaction(SIGUSR2, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGUSR2 handler: %s\n",strerror(errno));
memset(&act,0,sizeof(act));
act.sa_handler = SIG_IGN;
if( sigaction(SIGHUP, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGHUP handler: %s\n",strerror(errno));
memset(&act,0,sizeof(act));
act.sa_handler = SIG_IGN;/* don't die on broken pipes.*/
if( sigaction(SIGPIPE, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGPIPE handler: %s\n",strerror(errno));
memset(&act,0,sizeof(act));
act.sa_handler = SIG_IGN;
if( sigaction(SIGALRM, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGALRM handler: %s\n",strerror(errno));
memset(&act,0,sizeof(act));
act.sa_handler = sigact_segv;
if( sigaction(SIGSEGV, &act, NULL) <0)
die(ExitGulm_InitFailed,
"Failed to install signal SIGSEGV handler: %s\n",strerror(errno));
}
/**
* ltxp_main -
* @argc:
* @argv:
*
*
* Returns: int
*/
int ltpx_main(int argc, char **argv)
{
setupsignals();
#ifndef DEBUG
pid_lock(gulm_config.lock_file, ProgramName);
#endif
log_msg(lgm_Network2, "ltpx started.\n");
init_ltpx_poller();
/* proxy port should be in the config. */
open_ltpx_listener( gulm_config.ltpx_port );
if( open_ltpx_to_core() != 0 ) return -1;
initialize_ltpx_maps();
/* handling incomming packets */
ltpx_main_loop();
clear_pid(gulm_config.lock_file, ProgramName);
log_msg(lgm_Network, "finished.\n");
return 0;
}
/* vim: set ai cin et sw=3 ts=3 : */

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