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 #include "test.h"
43
44 char *TCID = "memset01";
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 int TST_TOTAL = 1;
57
58 void fill(void);
59 int checkit(char *str);
60
main(int argc,char * argv[])61 int main(int argc, char *argv[])
62 {
63 register int i, j;
64 char *p;
65
66 tst_parse_opts(argc, argv, NULL, NULL);
67
68 local_flag = PASSED;
69
70 fill();
71
72 for (i = 0; i < 200; i++) {
73 fill();
74 p = &buf[400];
75 memset(p, 0, i);
76 if ((j = checkit(p)) != i) {
77 tst_resm(TINFO,
78 "Not enough zero bytes, wanted %d, got %d", i,
79 j);
80 local_flag = FAILED;
81 break;
82 }
83 if (!p[-1] || !p[i]) {
84 tst_resm(TINFO, "Boundary error, clear of %d", i);
85 local_flag = FAILED;
86 }
87 if (local_flag == FAILED)
88 break;
89 }
90
91 (local_flag == FAILED) ? tst_resm(TFAIL,
92 "Test failed") : tst_resm(TPASS,
93 "Test passed");
94 (local_flag == FAILED) ? tst_resm(TFAIL,
95 "Test failed") : tst_resm(TPASS,
96 "Test passed");
97 tst_exit();
98 }
99
fill(void)100 void fill(void)
101 {
102 register int i;
103 for (i = 0; i < BSIZE; i++)
104 buf[i] = 'a';
105 }
106
checkit(char * str)107 int checkit(char *str)
108 {
109 register int i = 0;
110
111 while (!*str++)
112 i++;
113
114 return (i);
115 }
116