1 /* $NetBSD: t_file.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.
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_file.c,v 1.4 2017/01/13 21:30:41 christos Exp $");
36
37 #include <sys/param.h>
38 #include <sys/event.h>
39 #include <sys/mount.h>
40 #include <sys/wait.h>
41
42 #include <err.h>
43 #include <errno.h>
44 #include <fcntl.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <unistd.h>
49 #include <inttypes.h>
50
51 #include <atf-c.h>
52
53 #include "h_macros.h"
54
55 #define FILENAME "file"
56 #define NLINES 5
57
58 static void
child(void)59 child(void)
60 {
61 int i, n, fd;
62
63 (void)sleep(1);
64
65 for (i = 0; i < NLINES; ++i) {
66 fd = open(FILENAME, O_WRONLY|O_APPEND, 0644);
67 if (fd < 0)
68 err(EXIT_FAILURE, "open()");
69
70 n = write(fd, "foo\n", 4);
71 if (n < 0)
72 err(EXIT_FAILURE, "write()");
73
74 (void)close(fd);
75 (void)sleep(1);
76 }
77 _exit(0);
78 }
79
80 ATF_TC(file);
ATF_TC_HEAD(file,tc)81 ATF_TC_HEAD(file, tc)
82 {
83 atf_tc_set_md_var(tc, "descr", "Checks EVFILT_READ on regular file");
84 }
ATF_TC_BODY(file,tc)85 ATF_TC_BODY(file, tc)
86 {
87 char buffer[128];
88 struct kevent event[1];
89 pid_t pid;
90 int fd, kq, n, num, status;
91
92 RL(pid = fork());
93 if (pid == 0) {
94 child();
95 /* NOTREACHED */
96 }
97
98 RL(fd = open(FILENAME, O_RDONLY|O_CREAT, 0644));
99
100 #if 1 /* XXX: why was this disabled? */
101 RL(lseek(fd, 0, SEEK_END));
102 #endif
103
104 RL(kq = kqueue());
105
106 EV_SET(&event[0], fd, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
107 RL(kevent(kq, event, 1, NULL, 0, NULL));
108
109 for (num = 0; num < NLINES;) {
110 RL(n = kevent(kq, NULL, 0, event, 1, NULL));
111 num += n;
112
113 (void)printf("kevent num %d flags: %#x, fflags: %#x, data: "
114 "%" PRId64 "\n", n, event[0].flags, event[0].fflags,
115 event[0].data);
116
117 if (event[0].data < 0)
118 #if 1 /* XXXLUKEM */
119 RL(lseek(fd, 0, SEEK_END));
120 #else
121 RL(lseek(fd, event[0].data, SEEK_END));
122 #endif
123
124 RL(n = read(fd, buffer, 128));
125 buffer[n] = '\0';
126 (void)printf("file(%d): %s", num, buffer);
127 }
128
129 (void)waitpid(pid, &status, 0);
130
131 (void)printf("read: successful end\n");
132 }
133
ATF_TP_ADD_TCS(tp)134 ATF_TP_ADD_TCS(tp)
135 {
136 ATF_TP_ADD_TC(tp, file);
137
138 return atf_no_error();
139 }
140