1 /*	$OpenBSD: accept.c,v 1.2 2016/01/27 01:20:10 jca Exp $	*/
2 /*
3  * Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
4  */
5 #include <sys/types.h>
6 #include <sys/socket.h>
7 #include <netinet/in.h>
8 #include <pthread.h>
9 #include <signal.h>
10 #include <unistd.h>
11 #include "test.h"
12 
13 volatile sig_atomic_t hits = 0;
14 
15 void
16 handler(int sig)
17 {
18 	hits++;
19 }
20 
21 void *
22 thr_accept(void *arg)
23 {
24 	struct sockaddr_in sa;
25 	socklen_t salen;
26 	int s;
27 
28 	CHECKe(s = socket(AF_INET, SOCK_STREAM, 0));
29 	bzero(&sa, sizeof(sa));
30 	sa.sin_family = AF_INET;
31 	sa.sin_port = htons(6543);
32 	CHECKe(bind(s, (const void*)&sa, sizeof(sa)));
33 	CHECKe(listen(s, 10));
34 	salen = sizeof(sa);
35 	ASSERT(accept(s, (struct sockaddr *)&sa, &salen) == -1);
36 	return ((caddr_t)NULL + errno);
37 }
38 
39 int
40 main(int argc, char **argv)
41 {
42 	struct sigaction sa;
43 	pthread_t tid;
44 	void *retval;
45 
46 	bzero(&sa, sizeof(sa));
47 	sa.sa_handler = handler;
48 	sa.sa_flags = SA_RESTART;
49 	CHECKe(sigaction(SIGUSR1, &sa, NULL));
50 	sa.sa_flags = 0;
51 	CHECKe(sigaction(SIGUSR2, &sa, NULL));
52 
53 	CHECKr(pthread_create(&tid, NULL, thr_accept, NULL));
54 	sleep(2);
55 
56 	/* Should restart it. */
57 	CHECKr(pthread_kill(tid, SIGUSR1));
58 	sleep(1);
59 
60 	/* Should interrupt it. */
61 	CHECKr(pthread_kill(tid, SIGUSR2));
62 	sleep(1);
63 
64 	CHECKr(pthread_join(tid, &retval));
65 	ASSERT(retval == (void *)EINTR);
66 	ASSERT(hits == 2);
67 	SUCCEED;
68 }
69