1 /* $NetBSD: t_memset.c,v 1.5 2024/11/02 02:43:48 riastradh 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 1.5 2024/11/02 02:43:48 riastradh 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
41 static long page = 0;
42 static void fill(char *, size_t, char);
43 static bool check(char *, size_t, char);
44
45 int zero; /* always zero, but the compiler does not know */
46
47 static const struct {
48 const char *name;
49 void *(*fn)(void *, int, size_t);
50 } memsetfn[] = {
51 { "memset", &memset },
52 { "explicit_memset", &explicit_memset }, /* NetBSD extension */
53 { "memset_explicit", &memset_explicit }, /* C23 adopted name */
54 };
55
56 ATF_TC(memset_array);
ATF_TC_HEAD(memset_array,tc)57 ATF_TC_HEAD(memset_array, tc)
58 {
59 atf_tc_set_md_var(tc, "descr", "Test memset(3) with arrays");
60 }
61
ATF_TC_BODY(memset_array,tc)62 ATF_TC_BODY(memset_array, tc)
63 {
64 char buf[1024];
65 unsigned i;
66
67 for (i = 0; i < __arraycount(memsetfn); i++) {
68 (void)(*memsetfn[i].fn)(buf, 0, sizeof(buf));
69 ATF_CHECK_MSG(check(buf, sizeof(buf), 0),
70 "%s did not fill a static buffer",
71 memsetfn[i].name);
72
73 (void)(*memsetfn[i].fn)(buf, 'x', sizeof(buf));
74 ATF_CHECK_MSG(check(buf, sizeof(buf), 'x'),
75 "%s did not fill a static buffer",
76 memsetfn[i].name);
77 }
78 }
79
80 ATF_TC(memset_return);
ATF_TC_HEAD(memset_return,tc)81 ATF_TC_HEAD(memset_return, tc)
82 {
83 atf_tc_set_md_var(tc, "descr", "Test memset(3) return value");
84 }
85
ATF_TC_BODY(memset_return,tc)86 ATF_TC_BODY(memset_return, tc)
87 {
88 char *b = (char *)0x1;
89 char c[2];
90 char *p;
91 unsigned i;
92
93 for (i = 0; i < __arraycount(memsetfn); i++) {
94 ATF_CHECK_EQ_MSG((p = (*memsetfn[i].fn)(b, 0, 0)), b,
95 "%s: returned %p, expected %p", memsetfn[i].name, p, b);
96 ATF_CHECK_EQ_MSG((p = (*memsetfn[i].fn)(c, 2, sizeof(c))), c,
97 "%s: returned %p, expected %p", memsetfn[i].name, p, c);
98 }
99 }
100
101 ATF_TC(memset_basic);
ATF_TC_HEAD(memset_basic,tc)102 ATF_TC_HEAD(memset_basic, tc)
103 {
104 atf_tc_set_md_var(tc, "descr", "A basic test of memset(3)");
105 }
106
ATF_TC_BODY(memset_basic,tc)107 ATF_TC_BODY(memset_basic, tc)
108 {
109 char *buf, *ret;
110 unsigned i;
111
112 buf = malloc(page);
113 ret = malloc(page);
114
115 ATF_REQUIRE(buf != NULL);
116 ATF_REQUIRE(ret != NULL);
117
118 for (i = 0; i < __arraycount(memsetfn); i++) {
119 fill(ret, page, 0);
120 (*memsetfn[i].fn)(buf, 0, page);
121
122 ATF_CHECK_EQ_MSG(memcmp(ret, buf, page), 0, "%s",
123 memsetfn[i].name);
124
125 fill(ret, page, 'x');
126 (*memsetfn[i].fn)(buf, 'x', page);
127
128 ATF_CHECK_EQ_MSG(memcmp(ret, buf, page), 0, "%s",
129 memsetfn[i].name);
130 }
131
132 free(buf);
133 free(ret);
134 }
135
136 ATF_TC(memset_nonzero);
ATF_TC_HEAD(memset_nonzero,tc)137 ATF_TC_HEAD(memset_nonzero, tc)
138 {
139 atf_tc_set_md_var(tc, "descr", "Test memset(3) with non-zero params");
140 }
141
ATF_TC_BODY(memset_nonzero,tc)142 ATF_TC_BODY(memset_nonzero, tc)
143 {
144 const size_t n = 0x7f;
145 char *buf;
146 size_t i, j;
147
148 buf = malloc(page);
149 ATF_REQUIRE(buf != NULL);
150
151 for (i = 0x21; i < n; i++) {
152 for (j = 0; j < __arraycount(memsetfn); j++) {
153 (void)(*memsetfn[j].fn)(buf, i, page);
154 ATF_CHECK_MSG(check(buf, page, i),
155 "%s did not fill properly with %zu",
156 memsetfn[j].name, i);
157 }
158 }
159
160 free(buf);
161 }
162
163 ATF_TC(memset_zero_size);
164
ATF_TC_HEAD(memset_zero_size,tc)165 ATF_TC_HEAD(memset_zero_size, tc)
166 {
167 atf_tc_set_md_var(tc, "descr", "Test memset(3) with zero size");
168 }
169
ATF_TC_BODY(memset_zero_size,tc)170 ATF_TC_BODY(memset_zero_size, tc)
171 {
172 char buf[1024];
173 unsigned i;
174
175 for (i = 0; i < __arraycount(memsetfn); i++) {
176 (void)(*memsetfn[i].fn)(buf, 'x', sizeof(buf));
177 ATF_CHECK_MSG(check(buf, sizeof(buf), 'x'),
178 "%s did not fill a static buffer",
179 memsetfn[i].name);
180
181 (void)memset(buf+sizeof(buf)/2, 0, zero);
182 ATF_CHECK_MSG(check(buf, sizeof(buf), 'x'),
183 "%s with 0 size did change the buffer",
184 memsetfn[i].name);
185 }
186 }
187
188 ATF_TC(bzero_zero_size);
189
ATF_TC_HEAD(bzero_zero_size,tc)190 ATF_TC_HEAD(bzero_zero_size, tc)
191 {
192 atf_tc_set_md_var(tc, "descr", "Test bzero(3) with zero size");
193 }
194
ATF_TC_BODY(bzero_zero_size,tc)195 ATF_TC_BODY(bzero_zero_size, tc)
196 {
197 char buf[1024];
198
199 (void)memset(buf, 'x', sizeof(buf));
200
201 if (check(buf, sizeof(buf), 'x') != true)
202 atf_tc_fail("memset(3) did not fill a static buffer");
203
204 (void)bzero(buf+sizeof(buf)/2, zero);
205
206 if (check(buf, sizeof(buf), 'x') != true)
207 atf_tc_fail("bzero(3) with 0 size did change the buffer");
208 }
209
210 ATF_TC(memset_struct);
ATF_TC_HEAD(memset_struct,tc)211 ATF_TC_HEAD(memset_struct, tc)
212 {
213 atf_tc_set_md_var(tc, "descr", "Test memset(3) with a structure");
214 }
215
ATF_TC_BODY(memset_struct,tc)216 ATF_TC_BODY(memset_struct, tc)
217 {
218 struct stat st;
219 unsigned i;
220
221 for (i = 0; i < __arraycount(memsetfn); i++) {
222 st.st_dev = 0;
223 st.st_ino = 1;
224 st.st_mode = 2;
225 st.st_nlink = 3;
226 st.st_uid = 4;
227 st.st_gid = 5;
228 st.st_rdev = 6;
229 st.st_size = 7;
230 st.st_atime = 8;
231 st.st_mtime = 9;
232
233 (void)(*memsetfn[i].fn)(&st, 0, sizeof(struct stat));
234
235 ATF_CHECK_MSG(st.st_dev == 0, "%s", memsetfn[i].name);
236 ATF_CHECK_MSG(st.st_ino == 0, "%s", memsetfn[i].name);
237 ATF_CHECK_MSG(st.st_mode == 0, "%s", memsetfn[i].name);
238 ATF_CHECK_MSG(st.st_nlink == 0, "%s", memsetfn[i].name);
239 ATF_CHECK_MSG(st.st_uid == 0, "%s", memsetfn[i].name);
240 ATF_CHECK_MSG(st.st_gid == 0, "%s", memsetfn[i].name);
241 ATF_CHECK_MSG(st.st_rdev == 0, "%s", memsetfn[i].name);
242 ATF_CHECK_MSG(st.st_size == 0, "%s", memsetfn[i].name);
243 ATF_CHECK_MSG(st.st_atime == 0, "%s", memsetfn[i].name);
244 ATF_CHECK_MSG(st.st_mtime == 0, "%s", memsetfn[i].name);
245 }
246 }
247
248 static void
fill(char * buf,size_t len,char x)249 fill(char *buf, size_t len, char x)
250 {
251 size_t i;
252
253 for (i = 0; i < len; i++)
254 buf[i] = x;
255 }
256
257 static bool
check(char * buf,size_t len,char x)258 check(char *buf, size_t len, char x)
259 {
260 size_t i;
261
262 for (i = 0; i < len; i++) {
263
264 if (buf[i] != x)
265 return false;
266 }
267
268 return true;
269 }
270
ATF_TP_ADD_TCS(tp)271 ATF_TP_ADD_TCS(tp)
272 {
273
274 page = sysconf(_SC_PAGESIZE);
275 ATF_REQUIRE(page >= 0);
276
277 ATF_TP_ADD_TC(tp, memset_array);
278 ATF_TP_ADD_TC(tp, memset_basic);
279 ATF_TP_ADD_TC(tp, memset_nonzero);
280 ATF_TP_ADD_TC(tp, memset_struct);
281 ATF_TP_ADD_TC(tp, memset_return);
282 ATF_TP_ADD_TC(tp, memset_zero_size);
283 ATF_TP_ADD_TC(tp, bzero_zero_size);
284
285 return atf_no_error();
286 }
287