1 /******************************************************************************
2  * Copyright (c) 2004, 2008 IBM Corporation
3  * All rights reserved.
4  * This program and the accompanying materials
5  * are made available under the terms of the BSD License
6  * which accompanies this distribution, and is available at
7  * http://www.opensource.org/licenses/bsd-license.php
8  *
9  * Contributors:
10  *     IBM Corporation - initial implementation
11  *****************************************************************************/
12 
13 #include <string.h>
14 
15 char *
strstr(const char * hay,const char * needle)16 strstr(const char *hay, const char *needle)
17 {
18 	char *pos;
19 	int hlen, nlen;
20 
21 	if (hay == NULL || needle == NULL)
22 		return NULL;
23 
24 	hlen = strlen(hay);
25 	nlen = strlen(needle);
26 	if (nlen < 1)
27 		return (char *)hay;
28 
29 	for (pos = (char *)hay; pos < hay + hlen; pos++) {
30 		if (strncmp(pos, needle, nlen) == 0) {
31 			return pos;
32 		}
33 	}
34 
35 	return NULL;
36 }
37 
38