From d9292cfefb42fbb18335bac907074744c7295a65 Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@us.ibm.com>
Date: Fri, 2 Apr 2010 14:57:01 -0400
Subject: [PATCH] The attached patch optimizes the validation of the name of an
 interface.

---
 src/conf/domain_conf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 067f053369..d6ba4f6a52 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1795,7 +1795,7 @@ cleanup:
 
 static bool
 isValidIfname(const char *ifname) {
-    return (strspn(ifname, VALID_IFNAME_CHARS) == strlen(ifname));
+    return ifname[strspn(ifname, VALID_IFNAME_CHARS)] == 0;
 }