1 /* $OpenBSD: setsockopt3a.c,v 1.6 2012/02/22 20:33:51 fgsch Exp $ */
2 /*
3 * Federico G. Schwindt <fgsch@openbsd.org>, 2009. Public Domain.
4 */
5
6 #include <sys/types.h>
7 #include <sys/time.h>
8 #include <sys/socket.h>
9 #include <netinet/in.h>
10 #include <err.h>
11 #include <fcntl.h>
12 #include <netdb.h>
13 #include <stdlib.h>
14 #include <string.h>
15 #include <unistd.h>
16 #include "test.h"
17
18 /* resolution of the monotonic clock */
19 struct timespec mono_res;
20
21 static void
alarm_handler(int sig)22 alarm_handler(int sig)
23 {
24 _exit(NOTOK);
25 }
26
27 void
check_timeout(int s,int sec,const struct timespec * to)28 check_timeout(int s, int sec, const struct timespec *to)
29 {
30 struct timespec t1, t2, e;
31 char buf[BUFSIZ];
32
33 ASSERT(signal(SIGALRM, alarm_handler) != SIG_ERR);
34 CHECKe(alarm(sec));
35 CHECKe(clock_gettime(CLOCK_MONOTONIC, &t1));
36 ASSERT(read(s, &buf, sizeof(buf)) == -1);
37 CHECKe(clock_gettime(CLOCK_MONOTONIC, &t2));
38 ASSERT(errno == EAGAIN);
39 timespecsub(&t2, &t1, &e);
40
41 /*
42 * verify that the difference between the duration and the
43 * timeout is less than the resolution of the clock
44 */
45 if (timespeccmp(&e, to, <))
46 timespecsub(to, &e, &t1);
47 else
48 timespecsub(&e, to, &t1);
49 ASSERT(timespeccmp(&t1, &mono_res, <=));
50 }
51
52 static void *
sock_accept(void * arg)53 sock_accept(void *arg)
54 {
55 struct sockaddr_in sin;
56 struct timeval to;
57 struct timespec ts;
58 int s, s2, s3;
59
60 CHECKe(clock_getres(CLOCK_MONOTONIC, &mono_res));
61 CHECKe(s = strtol(arg, NULL, 10));
62 bzero(&sin, sizeof(sin));
63 sin.sin_family = AF_INET;
64 sin.sin_len = sizeof(sin);
65 sin.sin_port = htons(6545);
66 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
67 CHECKe(connect(s, (struct sockaddr *)&sin, sizeof(sin)));
68 to.tv_sec = 2;
69 to.tv_usec = 0.5 * 1e6;
70 TIMEVAL_TO_TIMESPEC(&to, &ts);
71 check_timeout(s, 3, &ts);
72 CHECKe(s2 = dup(s));
73 CHECKe(s3 = fcntl(s, F_DUPFD, s));
74 check_timeout(s2, 3, &ts);
75 check_timeout(s3, 3, &ts);
76 return (NULL);
77 }
78
79 int
main(int argc,char ** argv)80 main(int argc, char **argv)
81 {
82 pthread_t accept_thread;
83
84 if (argc != 2)
85 exit(NOTOK);
86 CHECKr(pthread_create(&accept_thread, NULL, sock_accept, argv[1]));
87 CHECKr(pthread_join(accept_thread, NULL));
88 SUCCEED;
89 }
90