1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) International Business Machines Corp., 2002 4f08c3bdfSopenharmony_ci * 5f08c3bdfSopenharmony_ci * 01/02/2003 Port to LTP avenkat@us.ibm.com 6f08c3bdfSopenharmony_ci * 06/30/2001 Port to Linux nsharoff@us.ibm.com 7f08c3bdfSopenharmony_ci */ 8f08c3bdfSopenharmony_ci 9f08c3bdfSopenharmony_ci/*\ 10f08c3bdfSopenharmony_ci * [Description] 11f08c3bdfSopenharmony_ci * 12f08c3bdfSopenharmony_ci * The testcase for test setting of buffer by check boundary conditions. 13f08c3bdfSopenharmony_ci */ 14f08c3bdfSopenharmony_ci 15f08c3bdfSopenharmony_ci#include <stdio.h> 16f08c3bdfSopenharmony_ci#include <string.h> 17f08c3bdfSopenharmony_ci#include <unistd.h> 18f08c3bdfSopenharmony_ci#include <stdlib.h> 19f08c3bdfSopenharmony_ci#include <errno.h> 20f08c3bdfSopenharmony_ci 21f08c3bdfSopenharmony_ci#include "tst_test.h" 22f08c3bdfSopenharmony_ci 23f08c3bdfSopenharmony_ci#define BSIZE 4096 24f08c3bdfSopenharmony_ci 25f08c3bdfSopenharmony_cichar buf[BSIZE]; 26f08c3bdfSopenharmony_ci 27f08c3bdfSopenharmony_cistatic void fill(void) 28f08c3bdfSopenharmony_ci{ 29f08c3bdfSopenharmony_ci register int i; 30f08c3bdfSopenharmony_ci 31f08c3bdfSopenharmony_ci for (i = 0; i < BSIZE; i++) 32f08c3bdfSopenharmony_ci buf[i] = 'a'; 33f08c3bdfSopenharmony_ci} 34f08c3bdfSopenharmony_ci 35f08c3bdfSopenharmony_cistatic int checkit(char *str) 36f08c3bdfSopenharmony_ci{ 37f08c3bdfSopenharmony_ci register int i = 0; 38f08c3bdfSopenharmony_ci 39f08c3bdfSopenharmony_ci while (!*str++) 40f08c3bdfSopenharmony_ci i++; 41f08c3bdfSopenharmony_ci 42f08c3bdfSopenharmony_ci return i; 43f08c3bdfSopenharmony_ci} 44f08c3bdfSopenharmony_ci 45f08c3bdfSopenharmony_cistatic void setup(void) 46f08c3bdfSopenharmony_ci{ 47f08c3bdfSopenharmony_ci fill(); 48f08c3bdfSopenharmony_ci} 49f08c3bdfSopenharmony_ci 50f08c3bdfSopenharmony_cistatic void verify_memset(void) 51f08c3bdfSopenharmony_ci{ 52f08c3bdfSopenharmony_ci register int i, j; 53f08c3bdfSopenharmony_ci char *p = &buf[400]; 54f08c3bdfSopenharmony_ci 55f08c3bdfSopenharmony_ci for (i = 0; i < 200; i++) { 56f08c3bdfSopenharmony_ci fill(); 57f08c3bdfSopenharmony_ci memset(p, 0, i); 58f08c3bdfSopenharmony_ci if ((j = checkit(p)) != i) { 59f08c3bdfSopenharmony_ci tst_res(TINFO, "Not enough zero bytes, wanted %d, got %d", i, j); 60f08c3bdfSopenharmony_ci break; 61f08c3bdfSopenharmony_ci } 62f08c3bdfSopenharmony_ci if (!p[-1] || !p[i]) { 63f08c3bdfSopenharmony_ci tst_res(TINFO, "Boundary error, clear of %d", i); 64f08c3bdfSopenharmony_ci break; 65f08c3bdfSopenharmony_ci } 66f08c3bdfSopenharmony_ci } 67f08c3bdfSopenharmony_ci 68f08c3bdfSopenharmony_ci if (i == 200) 69f08c3bdfSopenharmony_ci tst_res(TPASS, "Test passed"); 70f08c3bdfSopenharmony_ci else 71f08c3bdfSopenharmony_ci tst_res(TFAIL, "Test fails"); 72f08c3bdfSopenharmony_ci} 73f08c3bdfSopenharmony_ci 74f08c3bdfSopenharmony_cistatic struct tst_test test = { 75f08c3bdfSopenharmony_ci .setup = setup, 76f08c3bdfSopenharmony_ci .test_all = verify_memset, 77f08c3bdfSopenharmony_ci}; 78