[PATCH 3/3] domain: fix migration to older libvirt

[Pavel Hrdina <phrdina@xxxxxxxxxx>]

Since TLS feature was introduced in libvirt 2.3.0 we have to modify
migratable XML for specific case where 'tls' attribute is based on
setting from qemu.conf.

Signed-off-by: Pavel Hrdina <phrdina@xxxxxxxxxx>
---
 src/conf/domain_conf.c | 24 +++++++++++++++++++++++-
 src/conf/domain_conf.h |  1 +
 src/qemu/qemu_domain.c |  1 +
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 6e814b3..f556e4c 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1999,6 +1999,7 @@ virDomainChrSourceDefCopy(virDomainChrSourceDefPtr dest,
             return -1;
 
         dest->data.tcp.haveTLS = src->data.tcp.haveTLS;
+        dest->data.tcp.tlsFromConfig = src->data.tcp.tlsFromConfig;
         break;
 
     case VIR_DOMAIN_CHR_TYPE_UNIX:
@@ -10042,6 +10043,7 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
     char *slave = NULL;
     char *append = NULL;
     char *haveTLS = NULL;
+    char *tlsFromConfig = NULL;
     int remaining = 0;
 
     while (cur != NULL) {
@@ -10051,6 +10053,8 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
                     mode = virXMLPropString(cur, "mode");
                 if (!haveTLS)
                     haveTLS = virXMLPropString(cur, "tls");
+                if (!tlsFromConfig)
+                    tlsFromConfig = virXMLPropString(cur, "tlsFromConfig");
 
                 switch ((virDomainChrType) def->type) {
                 case VIR_DOMAIN_CHR_TYPE_FILE:
@@ -10236,6 +10240,18 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
             goto error;
         }
 
+        if (tlsFromConfig &&
+            flags & VIR_DOMAIN_DEF_PARSE_STATUS) {
+            int tmp;
+            if (virStrToLong_i(tlsFromConfig, NULL, 10, &tmp) < 0) {
+                virReportError(VIR_ERR_XML_ERROR,
+                               _("Invalid tlsFromConfig value: %s"),
+                               tlsFromConfig);
+                goto error;
+            }
+            def->data.tcp.tlsFromConfig = !!tmp;
+        }
+
         if (!protocol)
             def->data.tcp.protocol = VIR_DOMAIN_CHR_TCP_PROTOCOL_RAW;
         else if ((def->data.tcp.protocol =
@@ -10321,6 +10337,7 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
     VIR_FREE(logappend);
     VIR_FREE(logfile);
     VIR_FREE(haveTLS);
+    VIR_FREE(tlsFromConfig);
 
     return remaining;
 
@@ -21508,9 +21525,14 @@ virDomainChrSourceDefFormat(virBufferPtr buf,
                           def->data.tcp.listen ? "bind" : "connect");
         virBufferEscapeString(buf, "host='%s' ", def->data.tcp.host);
         virBufferEscapeString(buf, "service='%s'", def->data.tcp.service);
-        if (def->data.tcp.haveTLS != VIR_TRISTATE_BOOL_ABSENT)
+        if (def->data.tcp.haveTLS != VIR_TRISTATE_BOOL_ABSENT &&
+            !(flags & VIR_DOMAIN_DEF_FORMAT_MIGRATABLE &&
+              def->data.tcp.tlsFromConfig))
             virBufferAsprintf(buf, " tls='%s'",
                     virTristateBoolTypeToString(def->data.tcp.haveTLS));
+        if (flags & VIR_DOMAIN_DEF_FORMAT_STATUS)
+            virBufferAsprintf(buf, " tlsFromConfig='%d'",
+                              def->data.tcp.tlsFromConfig);
         virBufferAddLit(buf, "/>\n");
 
         virBufferAsprintf(buf, "<protocol type='%s'/>\n",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index f1da9c3..dff28c0 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1096,6 +1096,7 @@ struct _virDomainChrSourceDef {
             int protocol;
             bool tlscreds;
             int haveTLS; /* enum virTristateBool */
+            bool tlsFromConfig;
         } tcp;
         struct {
             char *bindHost;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 6cffff0..41ac52d 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -6204,6 +6204,7 @@ qemuDomainPrepareChardevSourceTLS(virDomainChrSourceDefPtr source,
                 source->data.tcp.haveTLS = VIR_TRISTATE_BOOL_YES;
             else
                 source->data.tcp.haveTLS = VIR_TRISTATE_BOOL_NO;
+            source->data.tcp.tlsFromConfig = true;
         }
     }
 }
-- 
2.10.1

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