The attached patch optimizes the validation of the name of an interface.

d9292cfe · Stefan Berger · 8459218c · d9292cfe
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src/conf/domain_conf.c src/conf/domain_conf.c +1 -1

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--- 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;
 }