Re: [PATCH 3/4] conf: Fix XML ctxt swap in virDomainNetDefParseXML

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On Wed, Feb 20, 2019 at 09:46:58AM -0500, John Ferlan wrote:
Alter the logic to return @tmpnode to ctxt->node in both the error
and non-error path when calling virDomainNetIPInfoParseXML.


What is the motivation here?

On error, ctxt->node will be restored anyway to 'oldnode'.

Jano

Signed-off-by: John Ferlan <jferlan@xxxxxxxxxx>
---
src/conf/domain_conf.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index ddcb76f05d..d550b467f7 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -11356,10 +11356,11 @@ virDomainNetDefParseXML(virDomainXMLOptionPtr xmlopt,
                xmlNodePtr tmpnode = ctxt->node;

                ctxt->node = cur;
-                if (virDomainNetIPInfoParseXML(_("interface host IP"),
-                                               ctxt, &def->hostIP) < 0)
-                    goto error;
+                rv = virDomainNetIPInfoParseXML(_("interface host IP"),
+                                                ctxt, &def->hostIP);
                ctxt->node = tmpnode;
+                if (rv < 0)
+                    goto error;
            }
            if (!macaddr && virXMLNodeNameEqual(cur, "mac")) {
                macaddr = virXMLPropString(cur, "address");
--
2.20.1

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