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      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 (at) us.ibm.com */
     21 /* 06/30/2001	Port to Linux	nsharoff (at) 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 /*--------------------------------------------------------------*/
     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 
    114 void fill(void)
    115 {
    116 	register int i;
    117 	for (i = 0; i < BSIZE; i++)
    118 		buf[i] = 'a';
    119 }
    120 
    121 int checkit(char *str)
    122 {
    123 	register int i = 0;
    124 
    125 	while (!*str++)
    126 		i++;
    127 
    128 	return (i);
    129 }
    130