commit 3226c06989186d9cd60ba146df4e2898fee5047b
Author: Steve Dickson <steved@redhat.com>
Date:   Wed Apr 30 11:14:22 2014 -0400

    libnfsidmap: id_as_chars() fails zero value ids.
    
    Root has a zero value id which is valid and
    should not be mapped to nfsnobody
    
    Signed-off-by: Steve Dickson <steved@redhat.com>

diff --git a/libnfsidmap.c b/libnfsidmap.c
index 641d766..92bc493 100644
--- a/libnfsidmap.c
+++ b/libnfsidmap.c
@@ -99,8 +99,12 @@ static char * toupper_str(char *s)
 static int id_as_chars(char *name, int *id)
 {
 	long int value = strtol(name, NULL, 10);
-	if (value == 0)
-		return 0;
+
+	if (value == 0) {
+		/* zero value ids are valid */
+		if (strcmp(name, "0") != 0)
+			return 0;
+	}
 	*id = (int)value;
 	return 1;
 }