t_memset.c revision 303975 
1/* $NetBSD: t_memset.c,v 1.3 2013/03/17 02:23:31 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_memset.c,v 1.3 2013/03/17 02:23:31 christos Exp $");
33
34#include <sys/stat.h>
35
36#include <atf-c.h>
37#include <stdlib.h>
38#include <string.h>
39#include <unistd.h>
40
41static long	page = 0;
42static void	fill(char *, size_t, char);
43static bool	check(char *, size_t, char);
44
45ATF_TC(memset_array);
46ATF_TC_HEAD(memset_array, tc)
47{
48	atf_tc_set_md_var(tc, "descr", "Test memset(3) with arrays");
49}
50
51ATF_TC_BODY(memset_array, tc)
52{
53	char buf[1024];
54
55	(void)memset(buf, 0, sizeof(buf));
56
57	if (check(buf, sizeof(buf), 0) != true)
58		atf_tc_fail("memset(3) did not fill a static buffer");
59
60	(void)memset(buf, 'x', sizeof(buf));
61
62	if (check(buf, sizeof(buf), 'x') != true)
63		atf_tc_fail("memset(3) did not fill a static buffer");
64}
65
66ATF_TC(memset_return);
67ATF_TC_HEAD(memset_return, tc)
68{
69	atf_tc_set_md_var(tc, "descr", "Test memset(3) return value");
70}
71
72ATF_TC_BODY(memset_return, tc)
73{
74	char *b = (char *)0x1;
75	char c[2];
76	ATF_REQUIRE_EQ(memset(b, 0, 0), b);
77	ATF_REQUIRE_EQ(memset(c, 2, sizeof(c)), c);
78}
79
80ATF_TC(memset_basic);
81ATF_TC_HEAD(memset_basic, tc)
82{
83	atf_tc_set_md_var(tc, "descr", "A basic test of memset(3)");
84}
85
86ATF_TC_BODY(memset_basic, tc)
87{
88	char *buf, *ret;
89
90	buf = malloc(page);
91	ret = malloc(page);
92
93	ATF_REQUIRE(buf != NULL);
94	ATF_REQUIRE(ret != NULL);
95
96	fill(ret, page, 0);
97	memset(buf, 0, page);
98
99	ATF_REQUIRE(memcmp(ret, buf, page) == 0);
100
101	fill(ret, page, 'x');
102	memset(buf, 'x', page);
103
104	ATF_REQUIRE(memcmp(ret, buf, page) == 0);
105
106	free(buf);
107	free(ret);
108}
109
110ATF_TC(memset_nonzero);
111ATF_TC_HEAD(memset_nonzero, tc)
112{
113	atf_tc_set_md_var(tc, "descr", "Test memset(3) with non-zero params");
114}
115
116ATF_TC_BODY(memset_nonzero, tc)
117{
118	const size_t n = 0x7f;
119	char *buf;
120	size_t i;
121
122	buf = malloc(page);
123	ATF_REQUIRE(buf != NULL);
124
125	for (i = 0x21; i < n; i++) {
126
127		(void)memset(buf, i, page);
128
129		if (check(buf, page, i) != true)
130			atf_tc_fail("memset(3) did not fill properly");
131	}
132
133	free(buf);
134}
135
136ATF_TC(memset_struct);
137ATF_TC_HEAD(memset_struct, tc)
138{
139	atf_tc_set_md_var(tc, "descr", "Test memset(3) with a structure");
140}
141
142ATF_TC_BODY(memset_struct, tc)
143{
144	struct stat st;
145
146	st.st_dev = 0;
147	st.st_ino = 1;
148	st.st_mode = 2;
149	st.st_nlink = 3;
150	st.st_uid = 4;
151	st.st_gid = 5;
152	st.st_rdev = 6;
153	st.st_size = 7;
154	st.st_atime = 8;
155	st.st_mtime = 9;
156
157	(void)memset(&st, 0, sizeof(struct stat));
158
159	ATF_CHECK(st.st_dev == 0);
160	ATF_CHECK(st.st_ino == 0);
161	ATF_CHECK(st.st_mode == 0);
162	ATF_CHECK(st.st_nlink == 0);
163	ATF_CHECK(st.st_uid == 0);
164	ATF_CHECK(st.st_gid == 0);
165	ATF_CHECK(st.st_rdev == 0);
166	ATF_CHECK(st.st_size == 0);
167	ATF_CHECK(st.st_atime == 0);
168	ATF_CHECK(st.st_mtime == 0);
169}
170
171static void
172fill(char *buf, size_t len, char x)
173{
174	size_t i;
175
176	for (i = 0; i < len; i++)
177		buf[i] = x;
178}
179
180static bool
181check(char *buf, size_t len, char x)
182{
183	size_t i;
184
185	for (i = 0; i < len; i++) {
186
187		if (buf[i] != x)
188			return false;
189	}
190
191	return true;
192}
193
194ATF_TP_ADD_TCS(tp)
195{
196
197	page = sysconf(_SC_PAGESIZE);
198	ATF_REQUIRE(page >= 0);
199
200	ATF_TP_ADD_TC(tp, memset_array);
201	ATF_TP_ADD_TC(tp, memset_basic);
202	ATF_TP_ADD_TC(tp, memset_nonzero);
203	ATF_TP_ADD_TC(tp, memset_struct);
204	ATF_TP_ADD_TC(tp, memset_return);
205
206	return atf_no_error();
207}
208