1 /*
2  *
3  *   Copyright (c) International Business Machines  Corp., 2002
4  *
5  *   This program is free software;  you can redistribute it and/or modify
6  *   it under the terms of the GNU General Public License as published by
7  *   the Free Software Foundation; either version 2 of the License, or
8  *   (at your option) any later version.
9  *
10  *   This program is distributed in the hope that it will be useful,
11  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
13  *   the GNU General Public License for more details.
14  *
15  *   You should have received a copy of the GNU General Public License
16  *   along with this program;  if not, write to the Free Software
17  *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 /* 01/02/2003	Port to LTP	avenkat&us.ibm.com */
21 /* 06/30/2001	Port to Linux	nsharoff@us.ibm.com */
22 
23 /*
24  * NAME
25  *	memcmp1 -- buffer  compare
26  *
27  * CALLS
28  *	memcmp(3)
29  *
30  * ALGORITHM
31  *	Check boundary conditions.
32  *
33  * RESTRICTIONS
34  */
35 
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <unistd.h>
39 #include <string.h>
40 #include <errno.h>
41 
42 #include "test.h"
43 
44 char *TCID = "memcmp1";
45 
46 #undef  BSIZE
47 #define BSIZE	4096
48 #define LEN	100
49 #define FAILED 0
50 #define PASSED 1
51 
52 char buf[BSIZE];
53 
54 int local_flag = PASSED;
55 int block_number;
56 FILE *temp;
57 int TST_TOTAL = 2;
58 int anyfail();
59 int blenter();
60 int blexit();
61 int instress();
62 
63 void setup();
64 
65 void clearit();
66 void fill(char *str);
67 int checkit(char *str);
68 
69 int main(int argc, char *argv[])
70 {
71 	char *p, *q;
72 
73 	tst_parse_opts(argc, argv, NULL, NULL);
74 
75 	setup();
76 	blenter();
77 
78 	clearit();
79 
80 	p = &buf[100];
81 	q = &buf[800];
82 
83 	fill(p);
84 	fill(q);
85 
86 	if (memcmp(p, q, LEN)) {
87 		fprintf(temp, "\tmemcmp fails - should have succeeded.\n");
88 		local_flag = FAILED;
89 	}
90 
91 	p[LEN - 1] = 0;
92 
93 	if (!memcmp(p, q, LEN)) {
94 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
95 		local_flag = FAILED;
96 	};
97 
98 	p[LEN - 1] = 'a';
99 	p[0] = 0;
100 
101 	if (!memcmp(p, q, LEN)) {
102 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
103 		local_flag = FAILED;
104 	};
105 
106 	p[0] = 'a';
107 	q[LEN - 1] = 0;
108 
109 	if (!memcmp(p, q, LEN)) {
110 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
111 		local_flag = FAILED;
112 	};
113 
114 	q[LEN - 1] = 'a';
115 	q[0] = 0;
116 
117 	if (!memcmp(p, q, LEN)) {
118 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
119 		local_flag = FAILED;
120 	};
121 
122 	q[0] = 'a';
123 
124 	if (memcmp(p, q, LEN)) {
125 		fprintf(temp, "\tmemcmp fails - should have succeeded.\n");
126 		local_flag = FAILED;
127 	}
128 
129 	blexit();
130 /*--------------------------------------------------------------*/
131 	blenter();
132 
133 	clearit();
134 
135 	p = &buf[800];
136 	q = &buf[100];
137 
138 	fill(p);
139 	fill(q);
140 
141 	if (memcmp(p, q, LEN)) {
142 		fprintf(temp, "\tmemcmp fails - should have succeeded.\n");
143 		local_flag = FAILED;
144 	}
145 
146 	p[LEN - 1] = 0;
147 
148 	if (!memcmp(p, q, LEN)) {
149 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
150 		local_flag = FAILED;
151 	};
152 
153 	p[LEN - 1] = 'a';
154 	p[0] = 0;
155 
156 	if (!memcmp(p, q, LEN)) {
157 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
158 		local_flag = FAILED;
159 	};
160 
161 	p[0] = 'a';
162 	q[LEN - 1] = 0;
163 
164 	if (!memcmp(p, q, LEN)) {
165 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
166 		local_flag = FAILED;
167 	};
168 
169 	q[LEN - 1] = 'a';
170 	q[0] = 0;
171 
172 	if (!memcmp(p, q, LEN)) {
173 		fprintf(temp, "\tmemcmp succeeded - should have failed.\n");
174 		local_flag = FAILED;
175 	};
176 
177 	q[0] = 'a';
178 
179 	if (memcmp(p, q, LEN)) {
180 		fprintf(temp, "\tmemcmp fails - should have succeeded.\n");
181 		local_flag = FAILED;
182 	}
183 
184 	blexit();
185 
186 	anyfail();
187 	tst_exit();
188 }
189 
190 void clearit(void)
191 {
192 	register int i;
193 
194 	for (i = 0; i < BSIZE; i++)
195 		buf[i] = 0;
196 }
197 
198 void fill(char *str)
199 {
200 	register int i;
201 	for (i = 0; i < LEN; i++)
202 		*str++ = 'a';
203 }
204 
205 int checkit(char *str)
206 {
207 	register int i;
208 	for (i = 0; i < LEN; i++)
209 		if (*str++ != 'a')
210 			return (-1);
211 
212 	return (0);
213 }
214 
215 int anyfail(void)
216 {
217 	tst_exit();
218 }
219 
220 void setup(void)
221 {
222 	temp = stderr;
223 }
224 
225 int blenter(void)
226 {
227 	local_flag = PASSED;
228 	return 0;
229 }
230 
231 int blexit(void)
232 {
233 	(local_flag == FAILED) ? tst_resm(TFAIL,
234 					  "Test failed") : tst_resm(TPASS,
235 								    "Test passed");
236 	return 0;
237 }
238