1 /* $NetBSD: t_truncate.c,v 1.2 2011/08/18 19:48:03 dholland 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_truncate.c,v 1.2 2011/08/18 19:48:03 dholland Exp $");
33
34 #include <sys/stat.h>
35
36 #include <atf-c.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <stdio.h>
40 #include <string.h>
41 #include <unistd.h>
42
43 static const char path[] = "truncate";
44 static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
45
46 ATF_TC_WITH_CLEANUP(ftruncate_basic);
ATF_TC_HEAD(ftruncate_basic,tc)47 ATF_TC_HEAD(ftruncate_basic, tc)
48 {
49 atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
50 }
51
ATF_TC_BODY(ftruncate_basic,tc)52 ATF_TC_BODY(ftruncate_basic, tc)
53 {
54 struct stat st;
55 size_t i;
56 int fd;
57
58 fd = open(path, O_RDWR | O_CREAT, 0600);
59 ATF_REQUIRE(fd >= 0);
60
61 for (i = 0; i < __arraycount(sizes); i++) {
62
63 (void)memset(&st, 0, sizeof(struct stat));
64
65 ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0);
66 ATF_REQUIRE(fstat(fd, &st) == 0);
67
68 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
69
70 if (sizes[i] != (size_t)st.st_size)
71 atf_tc_fail("ftruncate(2) did not truncate");
72 }
73
74 (void)close(fd);
75 (void)unlink(path);
76 }
77
ATF_TC_CLEANUP(ftruncate_basic,tc)78 ATF_TC_CLEANUP(ftruncate_basic, tc)
79 {
80 (void)unlink(path);
81 }
82
83 ATF_TC(ftruncate_err);
ATF_TC_HEAD(ftruncate_err,tc)84 ATF_TC_HEAD(ftruncate_err, tc)
85 {
86 atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)");
87 atf_tc_set_md_var(tc, "require.user", "unprivileged");
88 }
89
ATF_TC_BODY(ftruncate_err,tc)90 ATF_TC_BODY(ftruncate_err, tc)
91 {
92 int fd;
93
94 fd = open("/etc/passwd", O_RDONLY, 0400);
95 ATF_REQUIRE(fd >= 0);
96
97 errno = 0;
98 ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1);
99
100 errno = 0;
101 ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1);
102
103 (void)close(fd);
104 }
105
106 ATF_TC_WITH_CLEANUP(truncate_basic);
ATF_TC_HEAD(truncate_basic,tc)107 ATF_TC_HEAD(truncate_basic, tc)
108 {
109 atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
110 }
111
ATF_TC_BODY(truncate_basic,tc)112 ATF_TC_BODY(truncate_basic, tc)
113 {
114 struct stat st;
115 size_t i;
116 int fd;
117
118 fd = open(path, O_RDWR | O_CREAT, 0600);
119 ATF_REQUIRE(fd >= 0);
120
121 for (i = 0; i < __arraycount(sizes); i++) {
122
123 (void)memset(&st, 0, sizeof(struct stat));
124
125 ATF_REQUIRE(truncate(path, sizes[i]) == 0);
126 ATF_REQUIRE(fstat(fd, &st) == 0);
127
128 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
129
130 if (sizes[i] != (size_t)st.st_size)
131 atf_tc_fail("truncate(2) did not truncate");
132 }
133
134 (void)close(fd);
135 (void)unlink(path);
136 }
137
ATF_TC_CLEANUP(truncate_basic,tc)138 ATF_TC_CLEANUP(truncate_basic, tc)
139 {
140 (void)unlink(path);
141 }
142
143 ATF_TC(truncate_err);
ATF_TC_HEAD(truncate_err,tc)144 ATF_TC_HEAD(truncate_err, tc)
145 {
146 atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)");
147 atf_tc_set_md_var(tc, "require.user", "unprivileged");
148 }
149
ATF_TC_BODY(truncate_err,tc)150 ATF_TC_BODY(truncate_err, tc)
151 {
152
153 errno = 0;
154 ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1);
155
156 errno = 0;
157 ATF_REQUIRE_ERRNO(EISDIR, truncate("/etc", 999) == -1);
158
159 errno = 0;
160 ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1);
161
162 errno = 0;
163 ATF_REQUIRE_ERRNO(EACCES, truncate("/usr/bin/fpr", 999) == -1);
164 }
165
ATF_TP_ADD_TCS(tp)166 ATF_TP_ADD_TCS(tp)
167 {
168
169 ATF_TP_ADD_TC(tp, ftruncate_basic);
170 ATF_TP_ADD_TC(tp, ftruncate_err);
171 ATF_TP_ADD_TC(tp, truncate_basic);
172 ATF_TP_ADD_TC(tp, truncate_err);
173
174 return atf_no_error();
175 }
176