[libvirt] [PATCH 1/2] Add share argument to memdev devices(type=file)

[Michele Paolino]

Add the share option in the XML parser and in the memdev domain 
structure.

Signed-off-by: Michele Paolino <m.paolino at virtualopensystems.com>
---
 src/conf/domain_conf.c  | 16 ++++++++++++++++
 src/conf/domain_conf.h  |  1 +
 src/qemu/qemu_command.c |  3 +++
 3 files changed, 20 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 465a223..e73b6f5 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -9250,6 +9250,13 @@ virDomainMemDevDefParseXML(xmlNodePtr node,
         goto error;
     }
 
+    if ((tmp = virXMLPropString(node, "share")) != NULL) {
+        if (STREQ(tmp, "on"))
+            def->share = true;
+        VIR_FREE(tmp);
+    }
+
     if ((tmp = virXMLPropString(node, "merge")) != NULL) {
         if (STREQ(tmp, "yes"))
             def->merge = true;
@@ -9297,6 +9304,13 @@ virDomainMemDevDefParseXML(xmlNodePtr node,
         goto error;
     }
 
+    if (def->type == VIR_DOMAIN_MEMDEV_RAM && def->share) {
+        virReportError(VIR_ERR_XML_ERROR, "%s",
+                       _("The share argument should be not specified when "
+                         "memory device type is 'ram'"));
+        goto error;
+    }
+
     def->hostnodes = virXPathString("string(./source/@host-nodes)", ctxt);
 
     policy = virXPathString("string(./source/@policy)", ctxt);
@@ -16434,6 +16448,8 @@ virDomainMemDevDefFormat(virBufferPtr buf,
     }
 
     virBufferAsprintf(buf, "<memdev type='%s'", type);
+    if (def->type == VIR_DOMAIN_MEMDEV_FILE && def->share)
+        virBufferAddLit(buf, " share='on'");
     if (def->merge)
         virBufferAddLit(buf, " merge='yes'");
     if (def->dump)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 06e6781..eb5bad7 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1508,6 +1508,7 @@ struct _virDomainMemDevDef {
 
     unsigned long long capacity; /* bytes */
 
+    bool share;
     bool merge;
     bool dump;
     bool prealloc;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index db6717f..25e5b3c 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -4631,6 +4631,9 @@ qemuBuildMemObjectStr(virDomainMemDevDefPtr dev,
     if (dev->type == VIR_DOMAIN_MEMDEV_FILE && dev->mempath)
         virBufferAsprintf(&buf, ",mem-path=%s", dev->mempath);
 
+    if (dev->type == VIR_DOMAIN_MEMDEV_FILE && dev->share)
+        virBufferAsprintf(&buf, ",share=on");
+
     if (dev->hostnodes)
         virBufferAsprintf(&buf, ",host-nodes=%s", dev->hostnodes);
 
-- 
1.9.3