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