From e8052496519f347e7c2e15147eae329fc40e2e44 Mon Sep 17 00:00:00 2001
From: NAKAMURA Gou <go.nakamura.yw@hitachi-solutions.com>
Date: Thu, 26 Nov 2015 20:07:26 +0900
Subject: [PATCH] add strrchr()

---
 lib/include/string.h |  1 +
 lib/string.c         | 15 ++++++++++++++-
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/lib/include/string.h b/lib/include/string.h
index e43a4179..0b1bb490 100644
--- a/lib/include/string.h
+++ b/lib/include/string.h
@@ -23,6 +23,7 @@ int strcmp(const char *s1, const char *s2);
 int strncmp(const char *s1, const char *s2, size_t n);
 char *strstr(const char *haystack, const char *needle);
 char *strchr(const char *s, int n);
+char *strrchr(const char *s, int n);
 void *memcpy(void *dest, const void *src, size_t n);
 void *memcpy_long(void *dest, const void *src, size_t n);
 int memcmp(const void *s1, const void *s2, size_t n);
diff --git a/lib/string.c b/lib/string.c
index 624e390a..010b9c53 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -95,7 +95,20 @@ char *strchr(const char *s, int n) {
 	}
 	return NULL;
 }
-		
+
+char *
+strrchr(const char *s, int c)
+{
+	const char *last = NULL;
+
+	do {
+		if (*s == c) {
+			last = s;
+		}
+	} while (*(s++));
+
+	return (char *)last;
+} /* strrchr() */
 
 char *strstr(const char *haystack, const char *needle)
 {