[PATCH V2] Fix bug of attaching redirdev device

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RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1298070

The corresponding chardev must be attached first, otherwise the
the qemu command line won't be complete (missing the host part),
---
 src/qemu/qemu_hotplug.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index ee305e7..40cead7 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1381,6 +1381,7 @@ int qemuDomainAttachRedirdevDevice(virQEMUDriverPtr driver,
     int ret;
     qemuDomainObjPrivatePtr priv = vm->privateData;
     virDomainDefPtr def = vm->def;
+    char *charAlias = NULL;
     char *devstr = NULL;
 
     if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE)) {
@@ -1391,6 +1392,10 @@ int qemuDomainAttachRedirdevDevice(virQEMUDriverPtr driver,
 
     if (qemuAssignDeviceRedirdevAlias(vm->def, redirdev, -1) < 0)
         goto error;
+
+    if (virAsprintf(&charAlias, "char%s", redirdev->info.alias) < 0)
+        goto error;
+
     if (!(devstr = qemuBuildRedirdevDevStr(def, redirdev, priv->qemuCaps)))
         goto error;
 
@@ -1398,6 +1403,14 @@ int qemuDomainAttachRedirdevDevice(virQEMUDriverPtr driver,
         goto error;
 
     qemuDomainObjEnterMonitor(driver, vm);
+    if (qemuMonitorAttachCharDev(priv->mon,
+                                 charAlias,
+                                 &(redirdev->source.chr)) < 0) {
+        ignore_value(qemuDomainObjExitMonitor(driver, vm));
+        goto error;
+    }
+    VIR_FREE(charAlias);
+
     ret = qemuMonitorAddDevice(priv->mon, devstr);
 
     if (qemuDomainObjExitMonitor(driver, vm) < 0)
@@ -1414,9 +1427,9 @@ int qemuDomainAttachRedirdevDevice(virQEMUDriverPtr driver,
     return 0;
 
  error:
+    VIR_FREE(charAlias);
     VIR_FREE(devstr);
     return -1;
-
 }
 
 static int
-- 
2.1.4

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