[libvirt] [PATCH] conf: do not format redirfilter element if it do not have sub-element
When set a redirfilter element without sub-element, libvirt will
format it like this:
<redirfilter>
</redirfilter>
Just drop this element if it do not have any sub-element.
Signed-off-by: Luyao Huang <lhuang(a)redhat.com>
---
src/conf/domain_conf.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index bfdc94e..1034466 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -20596,6 +20596,10 @@ virDomainRedirFilterDefFormat(virBufferPtr buf,
{
size_t i;
+ /* no need format an empty redirfilter */
+ if (filter->nusbdevs == 0)
+ return 0;
+
virBufferAddLit(buf, "<redirfilter>\n");
virBufferAdjustIndent(buf, 2);
for (i = 0; i < filter->nusbdevs; i++) {
--
1.8.3.1