t_file2.c revision 314817 
1/* $NetBSD: t_file2.c,v 1.4 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 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_file2.c,v 1.4 2017/01/13 21:30:41 christos Exp $");
36
37#include <sys/event.h>
38
39#include <fcntl.h>
40#include <unistd.h>
41
42#include <atf-c.h>
43
44#include "h_macros.h"
45
46ATF_TC(file2);
47ATF_TC_HEAD(file2, tc)
48{
49	atf_tc_set_md_var(tc, "descr",
50	    "Checks EVFILT_READ for regular files. This test used to "
51	    "trigger deadlock caused by problem fixed in revision 1.79.2.10 "
52	    "of sys/kern/kern_descrip.c");
53}
54ATF_TC_BODY(file2, tc)
55{
56	int fd1, fd2, kq;
57	struct kevent event[1];
58
59	RL(fd1 = open("afile", O_RDONLY|O_CREAT, 0644));
60	RL(fd2 = open("bfile", O_RDONLY|O_CREAT, 0644));
61
62#if 1		/* XXX: why was this disabled? */
63	RL(lseek(fd1, 0, SEEK_END));
64#endif
65
66	RL(kq = kqueue());
67
68	EV_SET(&event[0], fd1, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
69	RL(kevent(kq, event, 1, NULL, 0, NULL));
70
71	RL(dup2(fd2, fd1));
72}
73
74ATF_TP_ADD_TCS(tp)
75{
76	ATF_TP_ADD_TC(tp, file2);
77
78	return atf_no_error();
79}
80