t_pipe.c revision 314817 
1/* $NetBSD: t_pipe.c,v 1.2 2017/01/13 21:30:41 christos Exp $ */
2
3/*-
4 * Copyright (c) 2002, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Luke Mewburn and Jaromir Dolecek.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__COPYRIGHT("@(#) Copyright (c) 2008\
34 The NetBSD Foundation, inc. All rights reserved.");
35__RCSID("$NetBSD: t_pipe.c,v 1.2 2017/01/13 21:30:41 christos Exp $");
36
37#include <sys/event.h>
38
39#include <stdio.h>
40#include <unistd.h>
41
42#include <atf-c.h>
43
44#include "h_macros.h"
45
46ATF_TC(pipe);
47ATF_TC_HEAD(pipe, tc)
48{
49	atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ for pipes");
50}
51ATF_TC_BODY(pipe, tc)
52{
53	struct kevent event[1];
54	char buffer[128];
55	int fds[2];
56	int kq, n;
57
58	RL(pipe(fds));
59	RL(kq = kqueue());
60
61	EV_SET(&event[0], fds[0], EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
62	RL(kevent(kq, event, 1, NULL, 0, NULL));
63
64	/* make sure there is something in the pipe */
65	RL(write(fds[1], "foo", 3));
66	(void)printf("pipe: wrote 'foo' to pipe\n");
67
68	RL(n = kevent(kq, NULL, 0, event, 1, NULL));
69	(void)printf("kevent num %d flags: %#x, fflags: %#x, data: "
70#ifdef __FreeBSD__
71	    "%" PRIdPTR "\n", n, event[0].flags, event[0].fflags, event[0].data);
72#else
73	    "%" PRId64 "\n", n, event[0].flags, event[0].fflags, event[0].data);
74#endif
75
76	RL(n = read(fds[0], buffer, event[0].data));
77	buffer[n] = '\0';
78
79	(void)printf("pipe: read '%s'\n", buffer);
80	(void)printf("pipe: successful end\n");
81}
82
83ATF_TP_ADD_TCS(tp)
84{
85	ATF_TP_ADD_TC(tp, pipe);
86
87	return atf_no_error();
88}
89