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[Libvir] [patch 2/2] Dont crash if theres no /sys/hypervisor/capabilities



xenHypervisorMakeCapabilitiesXML() can be called with either
of it's FILE* paramaters NULL; don't crash when the capabilities
pointer is NULL.

Signed-off-by: Mark McLoughlin <markmc redhat com>
Index: libvirt/src/xen_internal.c
===================================================================
--- libvirt.orig/src/xen_internal.c	2008-02-06 22:38:06.000000000 +0000
+++ libvirt/src/xen_internal.c	2008-02-06 23:38:54.000000000 +0000
@@ -2233,7 +2233,7 @@
      */
 
     /* Expecting one line in this file - ignore any more. */
-    if (fgets (line, sizeof line, capabilities)) {
+    if (capabilities && fgets (line, sizeof line, capabilities)) {
         /* Split the line into tokens.  strtok_r is OK here because we "own"
          * this buffer.  Parse out the features from each token.
          */

-- 


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