t_memset.c revision 313498
1129590Smarius/* $NetBSD: t_memset.c,v 1.4 2015/09/11 09:25:52 martin Exp $ */
2129590Smarius
3129590Smarius/*-
4129590Smarius * Copyright (c) 2011 The NetBSD Foundation, Inc.
5129590Smarius * All rights reserved.
6129590Smarius *
7129590Smarius * This code is derived from software contributed to The NetBSD Foundation
8129590Smarius * by Jukka Ruohonen.
9129590Smarius *
10129590Smarius * Redistribution and use in source and binary forms, with or without
11129590Smarius * modification, are permitted provided that the following conditions
12129590Smarius * are met:
13129590Smarius * 1. Redistributions of source code must retain the above copyright
14129590Smarius *    notice, this list of conditions and the following disclaimer.
15129590Smarius * 2. Redistributions in binary form must reproduce the above copyright
16129590Smarius *    notice, this list of conditions and the following disclaimer in the
17129590Smarius *    documentation and/or other materials provided with the distribution.
18129590Smarius *
19129590Smarius * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20129590Smarius * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21129590Smarius * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22129590Smarius * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23129590Smarius * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24129590Smarius * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25129590Smarius * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26129590Smarius * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27129590Smarius * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28129590Smarius * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29129590Smarius * POSSIBILITY OF SUCH DAMAGE.
30129590Smarius */
31129590Smarius#include <sys/cdefs.h>
32129590Smarius__RCSID("$NetBSD: t_memset.c,v 1.4 2015/09/11 09:25:52 martin Exp $");
33129590Smarius
34129590Smarius#include <sys/stat.h>
35129590Smarius
36129590Smarius#include <atf-c.h>
37129590Smarius#include <stdlib.h>
38129590Smarius#include <string.h>
39129590Smarius#include <unistd.h>
40129590Smarius
41129590Smariusstatic long	page = 0;
42129590Smariusstatic void	fill(char *, size_t, char);
43129590Smariusstatic bool	check(char *, size_t, char);
44129590Smarius
45129590Smariusint zero;	/* always zero, but the compiler does not know */
46129590Smarius
47129590SmariusATF_TC(memset_array);
48129590SmariusATF_TC_HEAD(memset_array, tc)
49129590Smarius{
50129590Smarius	atf_tc_set_md_var(tc, "descr", "Test memset(3) with arrays");
51129590Smarius}
52129590Smarius
53129590SmariusATF_TC_BODY(memset_array, tc)
54129590Smarius{
55129590Smarius	char buf[1024];
56129590Smarius
57129590Smarius	(void)memset(buf, 0, sizeof(buf));
58129590Smarius
59129590Smarius	if (check(buf, sizeof(buf), 0) != true)
60129590Smarius		atf_tc_fail("memset(3) did not fill a static buffer");
61129590Smarius
62129590Smarius	(void)memset(buf, 'x', sizeof(buf));
63129590Smarius
64129590Smarius	if (check(buf, sizeof(buf), 'x') != true)
65129590Smarius		atf_tc_fail("memset(3) did not fill a static buffer");
66129590Smarius}
67129590Smarius
68129590SmariusATF_TC(memset_return);
69129590SmariusATF_TC_HEAD(memset_return, tc)
70129590Smarius{
71129590Smarius	atf_tc_set_md_var(tc, "descr", "Test memset(3) return value");
72129590Smarius}
73129590Smarius
74129590SmariusATF_TC_BODY(memset_return, tc)
75129590Smarius{
76129590Smarius	char *b = (char *)0x1;
77129590Smarius	char c[2];
78129590Smarius	ATF_REQUIRE_EQ(memset(b, 0, 0), b);
79129590Smarius	ATF_REQUIRE_EQ(memset(c, 2, sizeof(c)), c);
80129590Smarius}
81129590Smarius
82129590SmariusATF_TC(memset_basic);
83129590SmariusATF_TC_HEAD(memset_basic, tc)
84129590Smarius{
85129590Smarius	atf_tc_set_md_var(tc, "descr", "A basic test of memset(3)");
86129590Smarius}
87129590Smarius
88129590SmariusATF_TC_BODY(memset_basic, tc)
89129590Smarius{
90129590Smarius	char *buf, *ret;
91129590Smarius
92129590Smarius	buf = malloc(page);
93129590Smarius	ret = malloc(page);
94129590Smarius
95129590Smarius	ATF_REQUIRE(buf != NULL);
96129590Smarius	ATF_REQUIRE(ret != NULL);
97129590Smarius
98129590Smarius	fill(ret, page, 0);
99129590Smarius	memset(buf, 0, page);
100129590Smarius
101129590Smarius	ATF_REQUIRE(memcmp(ret, buf, page) == 0);
102129590Smarius
103129590Smarius	fill(ret, page, 'x');
104129590Smarius	memset(buf, 'x', page);
105129590Smarius
106129590Smarius	ATF_REQUIRE(memcmp(ret, buf, page) == 0);
107129590Smarius
108129590Smarius	free(buf);
109129590Smarius	free(ret);
110129590Smarius}
111129590Smarius
112129590SmariusATF_TC(memset_nonzero);
113129590SmariusATF_TC_HEAD(memset_nonzero, tc)
114129590Smarius{
115129590Smarius	atf_tc_set_md_var(tc, "descr", "Test memset(3) with non-zero params");
116129590Smarius}
117129590Smarius
118129590SmariusATF_TC_BODY(memset_nonzero, tc)
119129590Smarius{
120129590Smarius	const size_t n = 0x7f;
121129590Smarius	char *buf;
122129590Smarius	size_t i;
123129590Smarius
124129590Smarius	buf = malloc(page);
125129590Smarius	ATF_REQUIRE(buf != NULL);
126129590Smarius
127129590Smarius	for (i = 0x21; i < n; i++) {
128129590Smarius
129129590Smarius		(void)memset(buf, i, page);
130129590Smarius
131129590Smarius		if (check(buf, page, i) != true)
132129590Smarius			atf_tc_fail("memset(3) did not fill properly");
133129590Smarius	}
134129590Smarius
135129590Smarius	free(buf);
136129590Smarius}
137129590Smarius
138129590SmariusATF_TC(memset_zero_size);
139129590Smarius
140129590SmariusATF_TC_HEAD(memset_zero_size, tc)
141129590Smarius{
142201227Sed	atf_tc_set_md_var(tc, "descr", "Test memset(3) with zero size");
143129590Smarius}
144129590Smarius
145129590SmariusATF_TC_BODY(memset_zero_size, tc)
146129590Smarius{
147	char buf[1024];
148
149	(void)memset(buf, 'x', sizeof(buf));
150
151	if (check(buf, sizeof(buf), 'x') != true)
152		atf_tc_fail("memset(3) did not fill a static buffer");
153
154	(void)memset(buf+sizeof(buf)/2, 0, zero);
155
156	if (check(buf, sizeof(buf), 'x') != true)
157		atf_tc_fail("memset(3) with 0 size did change the buffer");
158}
159
160ATF_TC(bzero_zero_size);
161
162ATF_TC_HEAD(bzero_zero_size, tc)
163{
164	atf_tc_set_md_var(tc, "descr", "Test bzero(3) with zero size");
165}
166
167ATF_TC_BODY(bzero_zero_size, tc)
168{
169	char buf[1024];
170
171	(void)memset(buf, 'x', sizeof(buf));
172
173	if (check(buf, sizeof(buf), 'x') != true)
174		atf_tc_fail("memset(3) did not fill a static buffer");
175
176	(void)bzero(buf+sizeof(buf)/2, zero);
177
178	if (check(buf, sizeof(buf), 'x') != true)
179		atf_tc_fail("bzero(3) with 0 size did change the buffer");
180}
181
182ATF_TC(memset_struct);
183ATF_TC_HEAD(memset_struct, tc)
184{
185	atf_tc_set_md_var(tc, "descr", "Test memset(3) with a structure");
186}
187
188ATF_TC_BODY(memset_struct, tc)
189{
190	struct stat st;
191
192	st.st_dev = 0;
193	st.st_ino = 1;
194	st.st_mode = 2;
195	st.st_nlink = 3;
196	st.st_uid = 4;
197	st.st_gid = 5;
198	st.st_rdev = 6;
199	st.st_size = 7;
200	st.st_atime = 8;
201	st.st_mtime = 9;
202
203	(void)memset(&st, 0, sizeof(struct stat));
204
205	ATF_CHECK(st.st_dev == 0);
206	ATF_CHECK(st.st_ino == 0);
207	ATF_CHECK(st.st_mode == 0);
208	ATF_CHECK(st.st_nlink == 0);
209	ATF_CHECK(st.st_uid == 0);
210	ATF_CHECK(st.st_gid == 0);
211	ATF_CHECK(st.st_rdev == 0);
212	ATF_CHECK(st.st_size == 0);
213	ATF_CHECK(st.st_atime == 0);
214	ATF_CHECK(st.st_mtime == 0);
215}
216
217static void
218fill(char *buf, size_t len, char x)
219{
220	size_t i;
221
222	for (i = 0; i < len; i++)
223		buf[i] = x;
224}
225
226static bool
227check(char *buf, size_t len, char x)
228{
229	size_t i;
230
231	for (i = 0; i < len; i++) {
232
233		if (buf[i] != x)
234			return false;
235	}
236
237	return true;
238}
239
240ATF_TP_ADD_TCS(tp)
241{
242
243	page = sysconf(_SC_PAGESIZE);
244	ATF_REQUIRE(page >= 0);
245
246	ATF_TP_ADD_TC(tp, memset_array);
247	ATF_TP_ADD_TC(tp, memset_basic);
248	ATF_TP_ADD_TC(tp, memset_nonzero);
249	ATF_TP_ADD_TC(tp, memset_struct);
250	ATF_TP_ADD_TC(tp, memset_return);
251	ATF_TP_ADD_TC(tp, memset_zero_size);
252	ATF_TP_ADD_TC(tp, bzero_zero_size);
253
254	return atf_no_error();
255}
256