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 * memset1.c -- test setting of buffer
26 *
27 * CALLS
28 * memset(3)
29 *
30 * ALGORITHM
31 * Check boundary conditions, go through 64 byte window.
32 *
33 * RESTRICTIONS
34 */
35
36 #include <stdio.h>
37 #include <string.h>
38 #include <unistd.h>
39 #include <stdlib.h>
40 #include <errno.h>
41
42 /***** LTP Port *****/
43 #include "test.h"
44
45 char *TCID = "memset01";
46
47 /***** ** ** *****/
48 #undef BSIZE
49 #define BSIZE 4096
50 #define LEN 100
51 #define FAILED 0
52 #define PASSED 1
53
54 char buf[BSIZE];
55
56 /***** LTP Port *****/
57 int local_flag = PASSED;
58 int block_number;
59 int TST_TOTAL = 1;
60
61 int anyfail();
62 void setup();
63 int blenter();
64 /***** ** ** *****/
65
66 void fill();
67 int checkit(char *str);
68
69 /*--------------------------------------------------------------*/
main(int argc,char * argv[])70 int main(int argc, char *argv[])
71 {
72 register int i, j;
73 char *p;
74
75 /*--------------------------------------------------------------*/
76 local_flag = PASSED;
77
78 fill();
79
80 for (i = 0; i < 200; i++) {
81 fill();
82 p = &buf[400];
83 memset(p, 0, i);
84 if ((j = checkit(p)) != i) {
85 tst_resm(TINFO,
86 "Not enough zero bytes, wanted %d, got %d", i,
87 j);
88 local_flag = FAILED;
89 break;
90 }
91 if (!p[-1] || !p[i]) {
92 tst_resm(TINFO, "Boundary error, clear of %d", i);
93 local_flag = FAILED;
94 }
95 if (local_flag == FAILED)
96 break;
97 }
98
99 (local_flag == FAILED) ? tst_resm(TFAIL,
100 "Test failed") : tst_resm(TPASS,
101 "Test passed");
102 /*--------------------------------------------------------------*/
103 /* Clean up any files created by test before call to anyfail. */
104
105 (local_flag == FAILED) ? tst_resm(TFAIL,
106 "Test failed") : tst_resm(TPASS,
107 "Test passed");
108 tst_exit();
109 }
110
111 /*--------------------------------------------------------------*/
112 /* FUNCTIONS GO HERE */
113
fill(void)114 void fill(void)
115 {
116 register int i;
117 for (i = 0; i < BSIZE; i++)
118 buf[i] = 'a';
119 }
120
checkit(char * str)121 int checkit(char *str)
122 {
123 register int i = 0;
124
125 while (!*str++)
126 i++;
127
128 return (i);
129 }
130