OpenSolaris Launch

1 files changed, 73 insertions, 0 deletions

diff --git a/usr/src/lib/libc/port/gen/strstr.c b/usr/src/lib/libc/port/gen/strstr.c
new file mode 100644
index 0000000000..0c600832c1
--- /dev/null
+++ b/usr/src/lib/libc/port/gen/strstr.c
@@ -0,0 +1,73 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*	Copyright (c) 1988 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+#include "synonyms.h"
+#include <string.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+/*
+ * strstr() locates the first occurrence in the string as1 of
+ * the sequence of characters (excluding the terminating null
+ * character) in the string as2. strstr() returns a pointer
+ * to the located string, or a null pointer if the string is
+ * not found. If as2 is "", the function returns as1.
+ */
+
+char *
+strstr(const char *as1, const char *as2)
+{
+	const char *s1, *s2;
+	const char *tptr;
+	char c;
+
+	s1 = as1;
+	s2 = as2;
+
+	if (s2 == NULL || *s2 == '\0')
+		return ((char *)s1);
+	c = *s2;
+
+	while (*s1)
+		if (*s1++ == c) {
+			tptr = s1;
+			while ((c = *++s2) == *s1++ && c)
+				;
+			if (c == 0)
+				return ((char *)tptr - 1);
+			s1 = tptr;
+			s2 = as2;
+			c = *s2;
+		}
+
+	return (NULL);
+}