41 	struct sigaction sa, sa0;  in main()  local
43 	sa.sa_handler = SIG_IGN;  in main()
44 	sigemptyset(&sa.sa_mask);  in main()
45 	sigaddset(&sa.sa_mask, SIGHUP);  in main()
46 	sigaddset(&sa.sa_mask, SIGINT);  in main()
47 	sa.sa_flags = SA_RESTART;  in main()
48 	assert(!sigaction(SIGUSR2, &sa, &sa0));  in main()
50 	sa.sa_handler = handle_signal;  in main()
51 	sigemptyset(&sa.sa_mask);  in main()
52 	sigaddset(&sa.sa_mask, SIGQUIT);  in main()
53 	sigaddset(&sa.sa_mask, SIGTERM);  in main()
54 	sa.sa_flags = SA_SIGINFO;  in main()
55 	assert(!sigaction(SIGUSR2, &sa, &sa0));  in main()
57 	sa.sa_handler = SIG_DFL;  in main()
58 	sigemptyset(&sa.sa_mask);  in main()
59 	sa.sa_flags = 0;  in main()
60 	assert(!sigaction(SIGUSR2, &sa, &sa0));  in main()
62 	sigfillset(&sa.sa_mask);  in main()
63 	sigdelset(&sa.sa_mask, SIGHUP);  in main()
64 	assert(!sigaction(SIGUSR2, &sa, &sa0));  in main()