t_truncate.c revision 276478 
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#ifdef __FreeBSD__
44#include <limits.h>
45#endif
46
47static const char path[] = "truncate";
48static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
49
50ATF_TC_WITH_CLEANUP(ftruncate_basic);
51ATF_TC_HEAD(ftruncate_basic, tc)
52{
53	atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
54}
55
56ATF_TC_BODY(ftruncate_basic, tc)
57{
58	struct stat st;
59	size_t i;
60	int fd;
61
62	fd = open(path, O_RDWR | O_CREAT, 0600);
63	ATF_REQUIRE(fd >= 0);
64
65	for (i = 0; i < __arraycount(sizes); i++) {
66
67		(void)memset(&st, 0, sizeof(struct stat));
68
69		ATF_REQUIRE(ftruncate(fd, sizes[i]) == 0);
70		ATF_REQUIRE(fstat(fd, &st) == 0);
71
72		(void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
73
74		if (sizes[i] != (size_t)st.st_size)
75			atf_tc_fail("ftruncate(2) did not truncate");
76	}
77
78	(void)close(fd);
79	(void)unlink(path);
80}
81
82ATF_TC_CLEANUP(ftruncate_basic, tc)
83{
84	(void)unlink(path);
85}
86
87ATF_TC(ftruncate_err);
88ATF_TC_HEAD(ftruncate_err, tc)
89{
90	atf_tc_set_md_var(tc, "descr", "Test errors from ftruncate(2)");
91	atf_tc_set_md_var(tc, "require.user", "unprivileged");
92}
93
94ATF_TC_BODY(ftruncate_err, tc)
95{
96	int fd;
97
98	fd = open("/etc/passwd", O_RDONLY, 0400);
99	ATF_REQUIRE(fd >= 0);
100
101	errno = 0;
102	ATF_REQUIRE_ERRNO(EBADF, ftruncate(-1, 999) == -1);
103
104	errno = 0;
105	ATF_REQUIRE_ERRNO(EINVAL, ftruncate(fd, 999) == -1);
106
107	(void)close(fd);
108}
109
110ATF_TC_WITH_CLEANUP(truncate_basic);
111ATF_TC_HEAD(truncate_basic, tc)
112{
113	atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
114}
115
116ATF_TC_BODY(truncate_basic, tc)
117{
118	struct stat st;
119	size_t i;
120	int fd;
121
122	fd = open(path, O_RDWR | O_CREAT, 0600);
123	ATF_REQUIRE(fd >= 0);
124
125	for (i = 0; i < __arraycount(sizes); i++) {
126
127		(void)memset(&st, 0, sizeof(struct stat));
128
129		ATF_REQUIRE(truncate(path, sizes[i]) == 0);
130		ATF_REQUIRE(fstat(fd, &st) == 0);
131
132		(void)fprintf(stderr, "truncating to %zu bytes\n", sizes[i]);
133
134		if (sizes[i] != (size_t)st.st_size)
135			atf_tc_fail("truncate(2) did not truncate");
136	}
137
138	(void)close(fd);
139	(void)unlink(path);
140}
141
142ATF_TC_CLEANUP(truncate_basic, tc)
143{
144	(void)unlink(path);
145}
146
147ATF_TC(truncate_err);
148ATF_TC_HEAD(truncate_err, tc)
149{
150	atf_tc_set_md_var(tc, "descr", "Test errors from truncate(2)");
151	atf_tc_set_md_var(tc, "require.user", "unprivileged");
152}
153
154ATF_TC_BODY(truncate_err, tc)
155{
156#ifndef __NetBSD__
157	char buf[PATH_MAX];
158#endif
159
160	errno = 0;
161	ATF_REQUIRE_ERRNO(EFAULT, truncate((void *)-1, 999) == -1);
162
163	errno = 0;
164	ATF_REQUIRE_ERRNO(EISDIR, truncate("/etc", 999) == -1);
165
166	errno = 0;
167	ATF_REQUIRE_ERRNO(ENOENT, truncate("/a/b/c/d/e/f/g", 999) == -1);
168
169	errno = 0;
170#ifdef __NetBSD__
171	ATF_REQUIRE_ERRNO(EACCES, truncate("/usr/bin/fpr", 999) == -1);
172#else
173	snprintf(buf, sizeof(buf), "%s/truncate_test.root_owned",
174	    atf_tc_get_config_var(tc, "srcdir"));
175	ATF_REQUIRE_ERRNO(EACCES, truncate(buf, 999) == -1);
176#endif
177}
178
179ATF_TP_ADD_TCS(tp)
180{
181
182	ATF_TP_ADD_TC(tp, ftruncate_basic);
183	ATF_TP_ADD_TC(tp, ftruncate_err);
184	ATF_TP_ADD_TC(tp, truncate_basic);
185	ATF_TP_ADD_TC(tp, truncate_err);
186
187	return atf_no_error();
188}
189