[Mini-OS] Add strrchr()

Add strrchr(), useful e.g. for grabbing the last part of a xenbus
path.

Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/extras/mini-os/lib/string.c b/extras/mini-os/lib/string.c
index c52ae43a89..019c922447 100644
--- a/extras/mini-os/lib/string.c
+++ b/extras/mini-os/lib/string.c
@@ -140,6 +140,15 @@ char * strchr(const char * s, int c)
         return (char *)s;
 }
 
+char * strrchr(const char * s, int c)
+{
+        const char *res;
+        for(; *s != '\0'; ++s)
+                if (*s == (char) c)
+                        res = s;
+        return (char *)res;
+}
+
 char * strstr(const char * s1,const char * s2)
 {
         int l1, l2;