1 /* $OpenBSD: t_truncate.c,v 1.4 2022/05/24 05:14:30 anton Exp $ */
2 /* $NetBSD: t_truncate.c,v 1.3 2017/01/13 20:03:51 christos Exp $ */
3
4 /*-
5 * Copyright (c) 2011 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jukka Ruohonen.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "macros.h"
34
35 #include <sys/stat.h>
36
37 #include "atf-c.h"
38 #include <errno.h>
39 #include <fcntl.h>
40 #include <limits.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <unistd.h>
44
45 static const char path[] = "truncate";
46 static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
47
48 ATF_TC_WITH_CLEANUP(ftruncate_basic);
ATF_TC_HEAD(ftruncate_basic,tc)49 ATF_TC_HEAD(ftruncate_basic, tc)
50 {
51 atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
52 }
53
ATF_TC_BODY(ftruncate_basic,tc)54 ATF_TC_BODY(ftruncate_basic, tc)
55 {
56 struct stat st;
57 size_t i;
58 int fd;
59
60 fd = open(path, O_RDWR | O_CREAT, 0600);
61 ATF_REQUIRE(fd >= 0);
62
63 for (i = 0; i < __arraycount(sizes); i++) {
64
65 (void)memset(&st, 0, sizeof(struct stat));
66
67 ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0);
68 ATF_REQUIRE(fstat(fd, &st) == 0);
69
70 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
71
72 if (sizes[i] != (size_t)st.st_size)
73 atf_tc_fail("ftruncate(2) did not truncate");
74 }
75
76 (void)close(fd);
77 (void)unlink(path);
78 }
79
ATF_TC_CLEANUP(ftruncate_basic,tc)80 ATF_TC_CLEANUP(ftruncate_basic, tc)
81 {
82 (void)unlink(path);
83 }
84
85 ATF_TC(ftruncate_err);
ATF_TC_HEAD(ftruncate_err,tc)86 ATF_TC_HEAD(ftruncate_err, tc)
87 {
88 atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)");
89 atf_tc_set_md_var(tc, "require.user", "unprivileged");
90 }
91
ATF_TC_BODY(ftruncate_err,tc)92 ATF_TC_BODY(ftruncate_err, tc)
93 {
94 int fd;
95
96 fd = open("/etc/passwd", O_RDONLY);
97 ATF_REQUIRE(fd >= 0);
98
99 errno = 0;
100 ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1);
101
102 errno = 0;
103 ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1);
104
105 (void)close(fd);
106 }
107
108 ATF_TC_WITH_CLEANUP(truncate_basic);
ATF_TC_HEAD(truncate_basic,tc)109 ATF_TC_HEAD(truncate_basic, tc)
110 {
111 atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
112 }
113
ATF_TC_BODY(truncate_basic,tc)114 ATF_TC_BODY(truncate_basic, tc)
115 {
116 struct stat st;
117 size_t i;
118 int fd;
119
120 fd = open(path, O_RDWR | O_CREAT, 0600);
121 ATF_REQUIRE(fd >= 0);
122
123 for (i = 0; i < __arraycount(sizes); i++) {
124
125 (void)memset(&st, 0, sizeof(struct stat));
126
127 ATF_REQUIRE(truncate(path, sizes[i]) == 0);
128 ATF_REQUIRE(fstat(fd, &st) == 0);
129
130 (void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
131
132 if (sizes[i] != (size_t)st.st_size)
133 atf_tc_fail("truncate(2) did not truncate");
134 }
135
136 (void)close(fd);
137 (void)unlink(path);
138 }
139
ATF_TC_CLEANUP(truncate_basic,tc)140 ATF_TC_CLEANUP(truncate_basic, tc)
141 {
142 (void)unlink(path);
143 }
144
145 ATF_TC(truncate_err);
ATF_TC_HEAD(truncate_err,tc)146 ATF_TC_HEAD(truncate_err, tc)
147 {
148 atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)");
149 atf_tc_set_md_var(tc, "require.user", "unprivileged");
150 }
151
ATF_TC_BODY(truncate_err,tc)152 ATF_TC_BODY(truncate_err, tc)
153 {
154 char buf[PATH_MAX];
155
156 errno = 0;
157 ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1);
158
159 errno = 0;
160 ATF_REQUIRE_ERRNO(EISDIR, truncate("/tmp", 999) == -1);
161
162 errno = 0;
163 ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1);
164
165 errno = 0;
166 snprintf(buf, sizeof(buf), "%s/truncate_test.root_owned",
167 atf_tc_get_config_var(tc, "srcdir"));
168 ATF_REQUIRE_ERRNO(EACCES, truncate(buf, 999) == -1);
169 }
170
ATF_TP_ADD_TCS(tp)171 ATF_TP_ADD_TCS(tp)
172 {
173
174 ATF_TP_ADD_TC(tp, ftruncate_basic);
175 ATF_TP_ADD_TC(tp, ftruncate_err);
176 ATF_TP_ADD_TC(tp, truncate_basic);
177 ATF_TP_ADD_TC(tp, truncate_err);
178
179 return atf_no_error();
180 }
181