1 /* $NetBSD: t_truncate.c,v 1.3 2017/01/13 20:03:51 christos 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 1.3 2017/01/13 20:03:51 christos Exp $");
33
34 #include <sys/stat.h>
35
36 #include <atf-c.h>
37 #include <errno.h>
38 #include <fcntl.h>
39 #include <limits.h>
40 #include <stdio.h>
41 #include <string.h>
42 #include <unistd.h>
43
44 static const char path[] = "truncate";
45 static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
46
47 ATF_TC_WITH_CLEANUP(ftruncate_basic);
ATF_TC_HEAD(ftruncate_basic,tc)48 ATF_TC_HEAD(ftruncate_basic, tc)
49 {
50 atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
51 }
52
ATF_TC_BODY(ftruncate_basic,tc)53 ATF_TC_BODY(ftruncate_basic, tc)
54 {
55 struct stat st;
56 size_t i;
57 int fd;
58
59 fd = open(path, O_RDWR | O_CREAT, 0600);
60 ATF_REQUIRE(fd >= 0);
61
62 for (i = 0; i < __arraycount(sizes); i++) {
63
64 (void)memset(&st, 0, sizeof(struct stat));
65
66 ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0);
67 ATF_REQUIRE(fstat(fd, &st) == 0);
68
69 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
70
71 if (sizes[i] != (size_t)st.st_size)
72 atf_tc_fail("ftruncate(2) did not truncate");
73 }
74
75 (void)close(fd);
76 (void)unlink(path);
77 }
78
ATF_TC_CLEANUP(ftruncate_basic,tc)79 ATF_TC_CLEANUP(ftruncate_basic, tc)
80 {
81 (void)unlink(path);
82 }
83
84 ATF_TC(ftruncate_err);
ATF_TC_HEAD(ftruncate_err,tc)85 ATF_TC_HEAD(ftruncate_err, tc)
86 {
87 atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)");
88 atf_tc_set_md_var(tc, "require.user", "unprivileged");
89 }
90
ATF_TC_BODY(ftruncate_err,tc)91 ATF_TC_BODY(ftruncate_err, tc)
92 {
93 int fd;
94
95 fd = open("/etc/passwd", O_RDONLY, 0400);
96 ATF_REQUIRE(fd >= 0);
97
98 errno = 0;
99 ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1);
100
101 errno = 0;
102 ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1);
103
104 (void)close(fd);
105 }
106
107 ATF_TC_WITH_CLEANUP(truncate_basic);
ATF_TC_HEAD(truncate_basic,tc)108 ATF_TC_HEAD(truncate_basic, tc)
109 {
110 atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
111 }
112
ATF_TC_BODY(truncate_basic,tc)113 ATF_TC_BODY(truncate_basic, tc)
114 {
115 struct stat st;
116 size_t i;
117 int fd;
118
119 fd = open(path, O_RDWR | O_CREAT, 0600);
120 ATF_REQUIRE(fd >= 0);
121
122 for (i = 0; i < __arraycount(sizes); i++) {
123
124 (void)memset(&st, 0, sizeof(struct stat));
125
126 ATF_REQUIRE(truncate(path, sizes[i]) == 0);
127 ATF_REQUIRE(fstat(fd, &st) == 0);
128
129 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
130
131 if (sizes[i] != (size_t)st.st_size)
132 atf_tc_fail("truncate(2) did not truncate");
133 }
134
135 (void)close(fd);
136 (void)unlink(path);
137 }
138
ATF_TC_CLEANUP(truncate_basic,tc)139 ATF_TC_CLEANUP(truncate_basic, tc)
140 {
141 (void)unlink(path);
142 }
143
144 ATF_TC(truncate_err);
ATF_TC_HEAD(truncate_err,tc)145 ATF_TC_HEAD(truncate_err, tc)
146 {
147 atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)");
148 atf_tc_set_md_var(tc, "require.user", "unprivileged");
149 }
150
ATF_TC_BODY(truncate_err,tc)151 ATF_TC_BODY(truncate_err, tc)
152 {
153 char buf[PATH_MAX];
154
155 errno = 0;
156 ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1);
157
158 errno = 0;
159 ATF_REQUIRE_ERRNO(EISDIR, truncate("/etc", 999) == -1);
160
161 errno = 0;
162 ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1);
163
164 errno = 0;
165 snprintf(buf, sizeof(buf), "%s/truncate_test.root_owned",
166 atf_tc_get_config_var(tc, "srcdir"));
167 ATF_REQUIRE_ERRNO(EACCES, truncate(buf, 999) == -1);
168 }
169
ATF_TP_ADD_TCS(tp)170 ATF_TP_ADD_TCS(tp)
171 {
172
173 ATF_TP_ADD_TC(tp, ftruncate_basic);
174 ATF_TP_ADD_TC(tp, ftruncate_err);
175 ATF_TP_ADD_TC(tp, truncate_basic);
176 ATF_TP_ADD_TC(tp, truncate_err);
177
178 return atf_no_error();
179 }
180