qemu: Introduce qemuBuildParallelsCommandLine

Add new function to manage adding the parallels device options to the
command line removing that task from the mainline qemuBuildCommandLine.
Alter logic slight to reduce indention level.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>

src/qemu/qemu_command.c

@@ -7813,6 +7813,50 @@ qemuBuildSerialCommandLine(virLogManagerPtr logManager,
 }
 
 
+static int
+qemuBuildParallelsCommandLine(virLogManagerPtr logManager,
+                              virCommandPtr cmd,
+                              const virDomainDef *def,
+                              virQEMUCapsPtr qemuCaps)
+{
+    size_t i;
+
+    /* If we have -device, then we set -nodefaults already */
+    if (!def->nparallels && !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))
+        virCommandAddArgList(cmd, "-parallel", "none", NULL);
+
+    for (i = 0; i < def->nparallels; i++) {
+        virDomainChrDefPtr parallel = def->parallels[i];
+        char *devstr;
+
+        /* Use -chardev with -device if they are available */
+        if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV) &&
+            virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
+            virCommandAddArg(cmd, "-chardev");
+            if (!(devstr = qemuBuildChrChardevStr(logManager, cmd, def,
+                                                  &parallel->source,
+                                                  parallel->info.alias,
+                                                  qemuCaps)))
+                return -1;
+            virCommandAddArg(cmd, devstr);
+            VIR_FREE(devstr);
+
+            if (qemuBuildChrDeviceCommandLine(cmd, def, parallel,
+                                              qemuCaps) < 0)
+                return -1;
+        } else {
+            virCommandAddArg(cmd, "-parallel");
+            if (!(devstr = qemuBuildChrArgStr(&parallel->source, NULL)))
+                return -1;
+            virCommandAddArg(cmd, devstr);
+            VIR_FREE(devstr);
+        }
+    }
+
+    return 0;
+}
+
+
 static int
 qemuBuildDomainLoaderCommandLine(virCommandPtr cmd,
                                  virDomainDefPtr def,
@@ -8312,38 +8356,8 @@ qemuBuildCommandLine(virConnectPtr conn,
     if (qemuBuildSerialCommandLine(logManager, cmd, def, qemuCaps) < 0)
         goto error;
 
-    if (!def->nparallels) {
-        /* If we have -device, then we set -nodefault already */
-        if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))
-            virCommandAddArgList(cmd, "-parallel", "none", NULL);
-    } else {
-        for (i = 0; i < def->nparallels; i++) {
-            virDomainChrDefPtr parallel = def->parallels[i];
-            char *devstr;
-
-            /* Use -chardev with -device if they are available */
-            if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV) &&
-                virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
-                if (!(devstr = qemuBuildChrChardevStr(logManager, cmd, def,
-                                                      &parallel->source,
-                                                      parallel->info.alias,
-                                                      qemuCaps)))
-                    goto error;
-                virCommandAddArg(cmd, "-chardev");
-                virCommandAddArg(cmd, devstr);
-                VIR_FREE(devstr);
-
-                if (qemuBuildChrDeviceCommandLine(cmd, def, parallel, qemuCaps) < 0)
-                    goto error;
-            } else {
-                virCommandAddArg(cmd, "-parallel");
-                if (!(devstr = qemuBuildChrArgStr(&parallel->source, NULL)))
-                    goto error;
-                virCommandAddArg(cmd, devstr);
-                VIR_FREE(devstr);
-            }
-        }
-    }
+    if (qemuBuildParallelsCommandLine(logManager, cmd, def, qemuCaps) < 0)
+        goto error;
 
     for (i = 0; i < def->nchannels; i++) {
         virDomainChrDefPtr channel = def->channels[i];