1 /* $NetBSD: t_fifo.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 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_fifo.c,v 1.4 2017/01/13 21:30:41 christos Exp $");
36
37 #include <sys/event.h>
38 #include <sys/stat.h>
39 #include <sys/wait.h>
40
41 #include <fcntl.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <unistd.h>
46
47 #include <atf-c.h>
48
49 #include "h_macros.h"
50
51 #define FIFONAME "fifo"
52
53 ATF_TC(fifo);
ATF_TC_HEAD(fifo,tc)54 ATF_TC_HEAD(fifo, tc)
55 {
56 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_WRITE for fifo");
57 }
ATF_TC_BODY(fifo,tc)58 ATF_TC_BODY(fifo, tc)
59 {
60 char buffer[128];
61 struct kevent event[1];
62 pid_t child;
63 int kq, n, fd, status;
64
65 RL(mkfifo(FIFONAME, 0644));
66 RL(fd = open(FIFONAME, O_RDWR, 0644));
67 RL(kq = kqueue());
68
69 /* spawn child reader */
70 RL(child = fork());
71 if (child == 0) {
72 int sz = read(fd, buffer, 128);
73 if (sz > 0)
74 (void)printf("fifo: child read '%.*s'\n", sz, buffer);
75 _exit(sz <= 0);
76 }
77
78 EV_SET(&event[0], fd, EVFILT_WRITE, EV_ADD|EV_ENABLE, 0, 0, 0);
79 RL(kevent(kq, event, 1, NULL, 0, NULL));
80
81 (void)memset(event, 0, sizeof(event));
82 RL(n = kevent(kq, NULL, 0, event, 1, NULL));
83
84 (void)printf("kevent num %d filt %d flags: %#x, fflags: %#x, "
85 "data: %" PRId64 "\n", n, event[0].filter, event[0].flags,
86 event[0].fflags, event[0].data);
87
88 ATF_REQUIRE_EQ(event[0].filter, EVFILT_WRITE);
89
90 RL(write(fd, "foo", 3));
91 (void)printf("fifo: wrote 'foo'\n");
92 RL(close(fd));
93
94 (void)waitpid(child, &status, 0);
95 }
96
ATF_TP_ADD_TCS(tp)97 ATF_TP_ADD_TCS(tp)
98 {
99 ATF_TP_ADD_TC(tp, fifo);
100
101 return atf_no_error();
102 }
103