t_truncate.c revision 1.2 
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
43static const char path[] = "truncate";
44static const size_t sizes[] = { 8, 16, 512, 1024, 2048, 4094, 3000, 30 };
45
46ATF_TC_WITH_CLEANUP(ftruncate_basic);
47ATF_TC_HEAD(ftruncate_basic, tc)
48{
49	atf_tc_set_md_var(tc, "descr", "A basic test of ftruncate(2)");
50}
51
52ATF_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
78ATF_TC_CLEANUP(ftruncate_basic, tc)
79{
80	(void)unlink(path);
81}
82
83ATF_TC(ftruncate_err);
84ATF_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
90ATF_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
106ATF_TC_WITH_CLEANUP(truncate_basic);
107ATF_TC_HEAD(truncate_basic, tc)
108{
109	atf_tc_set_md_var(tc, "descr", "A basic test of truncate(2)");
110}
111
112ATF_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
138ATF_TC_CLEANUP(truncate_basic, tc)
139{
140	(void)unlink(path);
141}
142
143ATF_TC(truncate_err);
144ATF_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
150ATF_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
166ATF_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