/* * 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