add back strchr/strrchr; from dhartmei

1 files changed, 67 insertions, 0 deletions

diff --git a/sys/lib/libkern/strchr.c b/sys/lib/libkern/strchr.c
new file mode 100644
index 00000000000..d4ede9b8e9d
--- /dev/null
+++ b/sys/lib/libkern/strchr.c
@@ -0,0 +1,67 @@
+/*	$OpenBSD: strchr.c,v 1.3 2004/05/06 01:12:05 deraadt Exp $	*/
+
+/*
+ * Copyright (c) 2004 Daniel Hartmeier
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *    - Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    - Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials provided
+ *      with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char *rcsid = "$OpenBSD: strchr.c,v 1.3 2004/05/06 01:12:05 deraadt Exp $";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#if !defined(_KERNEL) && !defined(_STANDALONE)
+#include <string.h>
+#else
+#include <lib/libkern/libkern.h>
+#define NULL	((char *)0)
+#endif
+
+char *
+strchr(const char *s, int c)
+{
+	while (*s) {
+		if (*s == c)
+			return ((char *)s);
+		s++;
+	}
+	return (NULL);
+}
+
+char *
+strrchr(const char *s, int c)
+{
+	char *t = NULL;
+
+	while (*s) {
+		if (*s == c)
+			t = (char *)s;
+		s++;
+	}
+	return (t);
+}