1 /* $NetBSD: t_fsync.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $ */
2 
3 /*-
4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jukka Ruohonen.
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 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_fsync.c,v 1.2 2012/03/18 07:00:52 jruoho Exp $");
33 
34 #include <errno.h>
35 #include <fcntl.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <string.h>
39 #include <unistd.h>
40 
41 #include <atf-c.h>
42 
43 ATF_TC(fsync_err);
44 ATF_TC_HEAD(fsync_err, tc)
45 {
46 	atf_tc_set_md_var(tc, "descr",
47 	    "Test error conditions of fsync(2) (PR kern/30)");
48 }
49 
50 ATF_TC_BODY(fsync_err, tc)
51 {
52 	int i, fd[2];
53 
54 	/*
55 	 * The fsync(2) call should fail with EBADF
56 	 * when the 'fd' is not a valid descriptor.
57 	 */
58 	for (i = 1; i < 1024; i = i + 128) {
59 
60 		errno = 0;
61 
62 		ATF_REQUIRE(fsync(-i) == -1);
63 		ATF_REQUIRE(errno == EBADF);
64 	}
65 
66 	/*
67 	 * On the other hand, EINVAL should follow
68 	 * if the operation is not possible with
69 	 * the file descriptor.
70 	 */
71 	ATF_REQUIRE(pipe(fd) == 0);
72 
73 	errno = 0;
74 
75 	ATF_REQUIRE(fsync(fd[0]) == -1);
76 	ATF_REQUIRE(errno == EINVAL);
77 
78 	errno = 0;
79 
80 	ATF_REQUIRE(fsync(fd[1]) == -1);
81 	ATF_REQUIRE(errno == EINVAL);
82 
83 	ATF_REQUIRE(close(fd[0]) == 0);
84 	ATF_REQUIRE(close(fd[1]) == 0);
85 }
86 
87 ATF_TC(fsync_sync);
88 ATF_TC_HEAD(fsync_sync, tc)
89 {
90 	atf_tc_set_md_var(tc, "descr", "A basic test of fsync(2)");
91 }
92 
93 ATF_TC_BODY(fsync_sync, tc)
94 {
95 	char buf[128];
96 	int fd, i;
97 
98 	for (i = 0; i < 10; i++) {
99 
100 		(void)snprintf(buf, sizeof(buf), "t_fsync-%d", i);
101 
102 		fd = mkstemp(buf);
103 
104 		ATF_REQUIRE(fd != -1);
105 		ATF_REQUIRE(write(fd, "0", 1) == 1);
106 		ATF_REQUIRE(fsync(fd) == 0);
107 
108 		ATF_REQUIRE(unlink(buf) == 0);
109 		ATF_REQUIRE(close(fd) == 0);
110 	}
111 }
112 
113 ATF_TP_ADD_TCS(tp)
114 {
115 
116 	ATF_TP_ADD_TC(tp, fsync_err);
117 	ATF_TP_ADD_TC(tp, fsync_sync);
118 
119 	return atf_no_error();
120 }
121