commit f0b670c016c85c882bb0583eaef8ea2f7147d4af
Author: Mike Christie <michaelc@cs.wisc.edu>
Date:   Tue Mar 23 21:59:13 2010 -0500

    iscsi tools: fix null sysfs string handling
    
    If a string is null we used to get <NULL>. We now get
    (null). This patch checks for both to support new and
    old kernels.

References: bnc #683249, #656119

---
 usr/sysfs.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: b/usr/sysfs.c
===================================================================
--- a/usr/sysfs.c
+++ b/usr/sysfs.c
@@ -566,7 +566,8 @@ char *sysfs_get_value(char *id, char *su
 		return NULL;
 	}
 
-	if (!strncmp(sysfs_value, "<NULL>", 6))
+	if (!strncmp(sysfs_value, "<NULL>", 6) ||
+	    !strncmp(sysfs_value, "(null)", 6))
 		return NULL;
 
 	return sysfs_value;