78 lines
1.2 KiB
C
78 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2002
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*
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* 01/02/2003 Port to LTP avenkat@us.ibm.com
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* 06/30/2001 Port to Linux nsharoff@us.ibm.com
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*/
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/*\
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* [Description]
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*
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* The testcase for test setting of buffer by check boundary conditions.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "tst_test.h"
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#define BSIZE 4096
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char buf[BSIZE];
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static void fill(void)
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{
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register int i;
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for (i = 0; i < BSIZE; i++)
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buf[i] = 'a';
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}
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static int checkit(char *str)
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{
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register int i = 0;
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while (!*str++)
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i++;
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return i;
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}
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static void setup(void)
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{
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fill();
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}
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static void verify_memset(void)
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{
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register int i, j;
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char *p = &buf[400];
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for (i = 0; i < 200; i++) {
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fill();
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memset(p, 0, i);
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if ((j = checkit(p)) != i) {
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tst_res(TINFO, "Not enough zero bytes, wanted %d, got %d", i, j);
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break;
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}
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if (!p[-1] || !p[i]) {
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tst_res(TINFO, "Boundary error, clear of %d", i);
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break;
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}
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}
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if (i == 200)
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tst_res(TPASS, "Test passed");
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else
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tst_res(TFAIL, "Test fails");
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}
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static struct tst_test test = {
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.setup = setup,
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.test_all = verify_memset,
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};
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