Daemonise.c

// Set name as seen in ps list int i; char *tmp = *argv; for (i=0; i<30; i++) tmp[i] = 65+i; sprintf(*argv,"peerd: %s (http%d)",peer,port); printf("argv[0] = \"%s\"\n",*argv); // Fork so parent can exit and return control to what invoked it pid_t pid = fork(); if (pid > 0) exit(EXIT_SUCCESS); if (pid < 0) exit(logErr("First fork() failed!"));

// Become a new session leader with no controlling term if (setsid() < 0) exit(logErr("setsid() failed!"));

// Fork again to be a non-session-leader which can't gain a controlling term pid = fork(); if (pid > 0) exit(EXIT_SUCCESS); if (pid < 0) exit(logErr("Second fork() failed!"));

chdir("/"); // Don't keep any dir in use umask(0); // Don't inherit any file perms mask //close(STDIN_FILENO); //close(STDOUT_FILENO); //close(STDERR_FILENO);