[Libvirt-cim] [PATCH V6 08/20] device parsing, add debug print

[Wenchao Xia]

  Sometimes libvirt will fail in these APIs if there is low level error,
what we saw is libvirt can't got xml for some domain. This patch adds
debug log when met this error, so in future we can know what is wrong.

Signed-off-by: Wenchao Xia <xiawenc at linux.vnet.ibm.com>
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 libxkutil/device_parsing.c |   19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/libxkutil/device_parsing.c b/libxkutil/device_parsing.c
index ceb4552..264d4cc 100644
--- a/libxkutil/device_parsing.c
+++ b/libxkutil/device_parsing.c
@@ -1246,20 +1246,29 @@ int get_dominfo_from_xml(const char *xml, struct domain **dominfo)
 int get_dominfo(virDomainPtr dom, struct domain **dominfo)
 {
         char *xml;
-        int ret;
+        int ret = 0;
         int start;
         xml = virDomainGetXMLDesc(dom,
                 VIR_DOMAIN_XML_INACTIVE | VIR_DOMAIN_XML_SECURE);
 
-        if (xml == NULL)
+        if (xml == NULL) {
+                CU_DEBUG("Failed to get dom xml with libvirt API.");
                 return 0;
+        }
 
-        ret = get_dominfo_from_xml(xml, dominfo);
-        if (virDomainGetAutostart(dom,  &start) !=  0)
-                return 0;
+        if (get_dominfo_from_xml(xml, dominfo) == 0) {
+                CU_DEBUG("Failed to translate xml into struct domain");
+                goto out;
+        }
+        if (virDomainGetAutostart(dom,  &start) !=  0) {
+                CU_DEBUG("Failed to get dom autostart with libvirt API.");
+                goto out;
+        }
 
         (*dominfo)->autostrt = start;
+        ret = 1;
 
+ out:
         free(xml);
 
         return ret;
-- 
1.7.1