1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Get matching substring 31 */ 32 #include <string.h> 33 34 #pragma weak strstr = _strstr 35 36 char * 37 _strstr(s1, s2) 38 register char *s1, *s2; 39 { 40 int s2len = strlen(s2); /* length of the second string */ 41 /* 42 * If the length of the second string is 0, 43 * return the first argument. 44 */ 45 if (s2len == 0) 46 return (s1); 47 48 while (strlen(s1) >= s2len) { 49 if (strncmp(s1, s2, s2len) == 0) 50 return (s1); 51 s1++; 52 } 53 return (0); 54 } 55