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[libvirt] [PATCH 7/9] conf: Fix bugs on disk source formating



One simple demo:

  * Edit the disk conf like:
    <source startupPolicy='optional'/>

The output will be like:

startupPolicy='optional'/>
---
 src/conf/domain_conf.c |   36 +++++++++++++++++++++---------------
 1 files changed, 21 insertions(+), 15 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 9f61c57..7b08b69 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -12249,11 +12249,14 @@ virDomainDiskSourceDefFormat(virBufferPtr buf,
         def->startupPolicy) {
         switch (def->type) {
         case VIR_DOMAIN_DISK_TYPE_FILE:
+            if (def->src || def->startupPolicy || def->nseclabels)
+                virBufferAddLit(buf, "      <source");
+
             if (def->src)
-                virBufferEscapeString(buf, "      <source file='%s'", def->src);
+                virBufferEscapeString(buf, " file='%s'", def->src);
             if (def->startupPolicy)
-                virBufferEscapeString(buf, " startupPolicy='%s'",
-                                      startupPolicy);
+                virBufferEscapeString(buf, " startupPolicy='%s'", startupPolicy);
+
             if (def->nseclabels) {
                 virBufferAddLit(buf, ">\n");
                 virBufferAdjustIndent(buf, 8);
@@ -12261,13 +12264,16 @@ virDomainDiskSourceDefFormat(virBufferPtr buf,
                     virSecurityDeviceLabelDefFormat(buf, def->seclabels[n]);
                 virBufferAdjustIndent(buf, -8);
                 virBufferAddLit(buf, "      </source>\n");
-            } else {
+            } else if (def->src || def->startupPolicy) {
                 virBufferAddLit(buf, "/>\n");
             }
             break;
         case VIR_DOMAIN_DISK_TYPE_BLOCK:
-            virBufferEscapeString(buf, "      <source dev='%s'",
-                                  def->src);
+            if (def->src || def->nseclabels)
+                virBufferAddLit(buf, "      <source");
+
+            virBufferEscapeString(buf, " dev='%s'", def->src);
+
             if (def->nseclabels) {
                 virBufferAddLit(buf, ">\n");
                 virBufferAdjustIndent(buf, 8);
@@ -12275,13 +12281,12 @@ virDomainDiskSourceDefFormat(virBufferPtr buf,
                     virSecurityDeviceLabelDefFormat(buf, def->seclabels[n]);
                 virBufferAdjustIndent(buf, -8);
                 virBufferAddLit(buf, "      </source>\n");
-            } else {
+            } else if (def->src) {
                 virBufferAddLit(buf, "/>\n");
             }
             break;
         case VIR_DOMAIN_DISK_TYPE_DIR:
-            virBufferEscapeString(buf, "      <source dir='%s'/>\n",
-                                  def->src);
+            virBufferEscapeString(buf, "      <source dir='%s'/>\n", def->src);
             break;
         case VIR_DOMAIN_DISK_TYPE_NETWORK:
             virBufferAsprintf(buf, "      <source protocol='%s'",
@@ -12317,15 +12322,16 @@ virDomainDiskSourceDefFormat(virBufferPtr buf,
             }
             break;
         case VIR_DOMAIN_DISK_TYPE_VOLUME:
-            /* Parsing guarantees the def->srcpool->volume cannot be NULL
-             * if def->srcpool->pool is not NULL.
-             */
+            if (def->srcpool || def->startupPolicy)
+                virBufferAddLit(buf, "      <source");
+
             if (def->srcpool)
-                virBufferAsprintf(buf, "      <source pool='%s' volume='%s'",
+                virBufferAsprintf(buf, " pool='%s' volume='%s'",
                                   def->srcpool->pool, def->srcpool->volume);
             if (def->startupPolicy)
-                virBufferEscapeString(buf, " startupPolicy='%s'/>\n", startupPolicy);
-            else
+                virBufferEscapeString(buf, " startupPolicy='%s'", startupPolicy);
+
+            if (def->srcpool || def->startupPolicy)
                 virBufferAddLit(buf, "/>\n");
             break;
         default:
-- 
1.7.7.6


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