From 31c32f8d76a447899ff4a5c551c06a2888814111 Mon Sep 17 00:00:00 2001
From: Peter Krempa <pkrempa@redhat.com>
Date: Thu, 14 May 2020 12:51:21 +0200
Subject: [PATCH 06/18] qemuBuildChannelsCommandLine: Extract common formatting
 of 'chardev'

Both active branches create the same backend chardev. Since there is no
other case, extract it before the switch so that we don't have to
duplicate it.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 src/qemu/qemu_command.c | 32 +++++++++++---------------------
 1 file changed, 11 insertions(+), 21 deletions(-)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 7c4db11ae2..579e78ea75 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -8857,37 +8857,27 @@ qemuBuildChannelsCommandLine(virLogManagerPtr logManager,
 
     for (i = 0; i < def->nchannels; i++) {
         virDomainChrDefPtr channel = def->channels[i];
-        char *devstr;
+        g_autofree char *chardevstr = NULL;
+        g_autofree char *netdevstr = NULL;
 
-        switch ((virDomainChrChannelTargetType) channel->targetType) {
-        case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_GUESTFWD:
-            if (!(devstr = qemuBuildChrChardevStr(logManager, secManager,
+        if (!(chardevstr = qemuBuildChrChardevStr(logManager, secManager,
                                                   cmd, cfg, def,
                                                   channel->source,
                                                   channel->info.alias,
                                                   qemuCaps, cdevflags)))
-                return -1;
-            virCommandAddArg(cmd, "-chardev");
-            virCommandAddArg(cmd, devstr);
-            VIR_FREE(devstr);
+            return -1;
 
-            if (qemuBuildChrDeviceStr(&devstr, def, channel, qemuCaps) < 0)
+        virCommandAddArg(cmd, "-chardev");
+        virCommandAddArg(cmd, chardevstr);
+
+        switch ((virDomainChrChannelTargetType) channel->targetType) {
+        case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_GUESTFWD:
+            if (qemuBuildChrDeviceStr(&netdevstr, def, channel, qemuCaps) < 0)
                 return -1;
-            virCommandAddArgList(cmd, "-netdev", devstr, NULL);
-            VIR_FREE(devstr);
+            virCommandAddArgList(cmd, "-netdev", netdevstr, NULL);
             break;
 
         case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO:
-            if (!(devstr = qemuBuildChrChardevStr(logManager, secManager,
-                                                  cmd, cfg, def,
-                                                  channel->source,
-                                                  channel->info.alias,
-                                                  qemuCaps, cdevflags)))
-                return -1;
-            virCommandAddArg(cmd, "-chardev");
-            virCommandAddArg(cmd, devstr);
-            VIR_FREE(devstr);
-
             if (qemuBuildChrDeviceCommandLine(cmd, def, channel, qemuCaps) < 0)
                 return -1;
             break;
-- 
2.23.0.windows.1