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/*
* This file is part of OpenTTD.
* OpenTTD 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, version 2.
* OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file dedicated.cpp Forking support for dedicated servers. */
#include "stdafx.h"
#include "fileio_func.h"
#include <string>
std::string _log_file; ///< File to reroute output of a forked OpenTTD to
std::unique_ptr<FILE, FileDeleter> _log_fd; ///< File to reroute output of a forked OpenTTD to
#if defined(UNIX)
#include <unistd.h>
#include "safeguards.h"
#if defined(SUNOS) && !defined(_LP64) && !defined(_I32LPx)
/* Solaris has, in certain situation, pid_t defined as long, while in other
* cases it has it defined as int... this handles all cases nicely.
*/
# define PRINTF_PID_T "%ld"
#else
# define PRINTF_PID_T "%d"
#endif
void DedicatedFork()
{
/* Fork the program */
pid_t pid = fork();
switch (pid) {
case -1:
perror("Unable to fork");
exit(1);
case 0: { // We're the child
/* Open the log-file to log all stuff too */
_log_fd.reset(fopen(_log_file.c_str(), "a"));
if (!_log_fd) {
perror("Unable to open logfile");
exit(1);
}
/* Redirect stdout and stderr to log-file */
if (dup2(fileno(_log_fd.get()), fileno(stdout)) == -1) {
perror("Rerouting stdout");
exit(1);
}
if (dup2(fileno(_log_fd.get()), fileno(stderr)) == -1) {
perror("Rerouting stderr");
exit(1);
}
break;
}
default:
/* We're the parent */
printf("Loading dedicated server...\n");
printf(" - Forked to background with pid " PRINTF_PID_T "\n", pid);
exit(0);
}
}
#endif
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