/**
 * @file
 * @section AUTHORS
 *
 *  Authors:
 *       Eamon Walsh <ewalsh@tycho.nsa.gov>
 *       Frank Rehberger <F.Rehberger@xtradyne.de>
 *
 * @section LICENSE
 *
 * This file is in the public domain.
 *
 * @section DESCRIPTION
 *
 * This is the main routine for the linpicker-server program.
 * Nothing much here except initialization, select loop, and teardown.
 */

#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <errno.h>

#include "common.h"
#include "fd.h"
#include "xen_backend.h"
#include "sys-queue.h"
#include "display.h"
#include "input.h"
#include "local.h"

static int timetodie;

/*
 * Is called in case of process signals.
 */
static void
server_sighandler(int sig)
{
    timetodie = 1;
}

/* 
 * Main
 */
int main (int argc, char *argv[])
{
    struct sigaction sa = { .sa_handler = server_sighandler };

    chdir("/");

    /* Set up sighandlers */
    sigaction(SIGINT, &sa, NULL);
    sigaction(SIGTERM, &sa, NULL);

    /* Open logfile */
    if (fd_open_logfile(SERVER_LOG) < 0)
	return 1;

    /* Initialize subsystems */
    if (local_init(argc, argv) < 0)
	return 1;
    if (display_initialize(&argc, &argv) < 0)
	return 2;
    if (input_initialize(argc, argv) < 0)
	return 3;
    if (xen_be_init() < 0)
	return 4;

    /* Enter select loop */
    while (!timetodie && fd_run_select() == 0);

    /* Shut down */
    input_shutdown();
    display_shutdown();
    fd_shutdown();
    return 0;
}