1/*	$OpenBSD: readv.c,v 1.1 2011/09/13 23:50:17 fgsch Exp $	*/
2/*
3 * Federico G. Schwindt <fgsch@openbsd.org>, 2011. Public Domain.
4 */
5#include <sys/types.h>
6#include <sys/uio.h>
7#include <pthread.h>
8#include <signal.h>
9#include <unistd.h>
10#include "test.h"
11
12volatile sig_atomic_t hits = 0;
13
14void
15handler(int sig)
16{
17	hits++;
18}
19
20void *
21thr_readv(void *arg)
22{
23	struct iovec iov;
24	int fds[2];
25	char buf;
26
27	CHECKe(pipe(fds));
28	iov.iov_base = &buf;
29	iov.iov_len = 1;
30	ASSERT(readv(fds[0], &iov, 1) == -1);
31	return ((caddr_t)NULL + errno);
32}
33
34int
35main(int argc, char **argv)
36{
37	struct sigaction sa;
38	pthread_t tid;
39	void *retval;
40
41	bzero(&sa, sizeof(sa));
42	sa.sa_handler = handler;
43	sa.sa_flags = SA_RESTART;
44	CHECKe(sigaction(SIGUSR1, &sa, NULL));
45	sa.sa_flags = 0;
46	CHECKe(sigaction(SIGUSR2, &sa, NULL));
47
48	CHECKr(pthread_create(&tid, NULL, thr_readv, NULL));
49	sleep(2);
50
51	/* Should restart it. */
52	CHECKr(pthread_kill(tid, SIGUSR1));
53	sleep(1);
54
55	/* Should interrupt it. */
56	CHECKr(pthread_kill(tid, SIGUSR2));
57	sleep(1);
58
59	CHECKr(pthread_join(tid, &retval));
60	ASSERT(retval == (void *)EINTR);
61	ASSERT(hits == 2);
62	SUCCEED;
63}
64