| -rw-r--r-- | src/iiid.cc | 44 |
1 files changed, 42 insertions, 2 deletions
diff --git a/src/iiid.cc b/src/iiid.cc index b3dd3bf..29acd06 100644 --- a/src/iiid.cc +++ b/src/iiid.cc @@ -18,19 +18,21 @@ int main(int argc,char **argv) try { int port = 59278; + bool daemon_mode = false; while(true) { static struct option opts[] = { { "help", no_argument, 0, 'h' }, { "usage", no_argument, 0, 'h' }, { "version", no_argument, 0, 'V' }, { "license", no_argument, 0, 'L' }, { "port", required_argument, 0, 'p' }, + { "daemon", no_argument, 0, 'd' }, { NULL, 0, 0, 0 } }; - int c = getopt_long(argc,argv,"hVLp:",opts,NULL); + int c = getopt_long(argc,argv,"hVLp:d",opts,NULL); if(c==-1) break; switch(c) { case 'h': std::cerr << PHEADER << std::endl << std::endl @@ -41,8 +43,9 @@ int main(int argc,char **argv) try { " -V, --version display version information\n" " -L, --license show license\n" " -p <port>, --port=<port> port to listen to\n" " (you're not likely to ever need it)\n" + " -d, --daemon run as daemon\n" << std::endl << std::endl; exit(0); break; case 'V': @@ -60,8 +63,11 @@ int main(int argc,char **argv) try { std::cerr << "Failed to parse port number" << std::endl; exit(1); } break; + case 'd': + daemon_mode = true; + break; default: std::cerr << "Huh?" << std::endl; exit(1); break; @@ -73,9 +79,9 @@ int main(int argc,char **argv) try { ++ident; else ident = *argv; openlog(ident,LOG_PERROR|LOG_PID,LOG_DAEMON); - syslog(LOG_INFO,"Starting iii eye-fi manager"); + syslog(LOG_INFO,"Starting iii eye-fi manager on port %d", port); struct stat st; if(stat(EYEKIN_CONF_DIR,&st) || !S_ISDIR(st.st_mode)) syslog(LOG_WARNING,"configuration directory '%s' does not exist or is not a directory",EYEKIN_CONF_DIR); @@ -84,8 +90,42 @@ int main(int argc,char **argv) try { syslog(LOG_WARNING,"I see nothing resembling a card config in '%s'",EYEKIN_CONF_DIR); else globfree(&g); + if(daemon_mode) { + pid_t pid, sid; + + /* Fork off the parent process */ + pid = fork(); + if (pid < 0) { + syslog(LOG_ERR, "Error forking the parent process"); + exit(EXIT_FAILURE); + } + + /* If we got a good PID, then we can exit the parent process. */ + if (pid > 0) { + exit(EXIT_SUCCESS); + } + + /* Create a new SID for the child process */ + sid = setsid(); + if (sid < 0) { + syslog(LOG_ERR, "Error creating a new SID for the child process"); + exit(EXIT_FAILURE); + } + + /* Change the current working directory */ + if ((chdir("/")) < 0) { + syslog(LOG_ERR, "Error changing current working directory to /"); + exit(EXIT_FAILURE); + } + + /* Close out the standard file descriptors */ + close(STDIN_FILENO); + close(STDOUT_FILENO); + close(STDERR_FILENO); + } + eyefiworker().run(port); closelog(); return 0; |