[libvirt] [PATCH] virsh: fix change-media bug on disk block type

[Guannan Ren]

Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=923053
When cdrom is block type, the virsh change-media failed to insert
source info because virsh uses "<source block='/dev/sdb'/>" while
the correct name of the attribute for block disks is "dev".
---
 tools/virsh-domain.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 606bcdf..8cafce4 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -9866,8 +9866,10 @@ vshPrepareDiskXML(xmlNodePtr disk_node,
 
             if (source) {
                 new_node = xmlNewNode(NULL, BAD_CAST "source");
-                xmlNewProp(new_node, (const xmlChar *)disk_type,
-                           (const xmlChar *)source);
+                if (STREQ(disk_type, "block"))
+                    xmlNewProp(new_node, BAD_CAST "dev", BAD_CAST source);
+                else
+                    xmlNewProp(new_node, BAD_CAST disk_type, BAD_CAST source);
                 xmlAddChild(disk_node, new_node);
             } else if (type == VSH_PREPARE_DISK_XML_INSERT) {
                 vshError(NULL, _("No source is specified for inserting media"));
-- 
1.8.3.1