...tsid (2) setsockopt (2) setuid (2) shutdown (2) sigaction (2) sigaddset (3) sigdelset (3) sigemptyset (3) sigfillset (3) sigismember (3) siglongjmp (3) Added in POSIX.1-2008 TC2…...stablish handlers for SIGQUIT and the I/O completion signal. */ sa.sa_flags = SA_RESTART; sigemptyset(&sa.sa_mask); sa.sa_handler = quitHandler; if (sigaction(SIGQUIT, &sa, NULL…