[PATCHv2] qemu: Redundant listen address entry in quest xml

[Erik Skultety <eskultet@xxxxxxxxxx>]

When editing guest's XML (on QEMU), it was possible to add multiple
listen elements into graphics parent element. However QEMU does not
support listening on multiple addresses. Configuration is tested for
multiple 'listen address' and if positive, an error is raised.
---
 src/qemu/qemu_process.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 9e6a9ae..1810e6c 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3934,6 +3934,14 @@ int qemuProcessStart(virConnectPtr conn,
                 }
                 graphics->listens[0].fromConfig = true;
             }
+            /* multiple listen addresses are unsupported configuration in qemu
+             */
+            else if (graphics->nListens > 1) {
+                virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                               _("QEMU does not support multiple listen "
+                                 "addresses for a domain."));
+                goto cleanup;
+            }
         }
     }
 
-- 
1.9.3

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