qemu: Move, rename and export qemuDomObjFromDomain

Move it to qemu_domain.c and rename it to qemuDomainObjFromDomain. This
will allow reusing it after splitting out checkpoint code from
qemu_driver.c.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

src/qemu/qemu_domain.c

@@ -119,6 +119,37 @@ VIR_ENUM_IMPL(qemuDomainNamespace,
               "mount",
 );
 
+
+/**
+ * qemuDomainObjFromDomain:
+ * @domain: Domain pointer that has to be looked up
+ *
+ * This function looks up @domain and returns the appropriate virDomainObjPtr
+ * that has to be released by calling virDomainObjEndAPI().
+ *
+ * Returns the domain object with incremented reference counter which is locked
+ * on success, NULL otherwise.
+ */
+virDomainObjPtr
+qemuDomainObjFromDomain(virDomainPtr domain)
+{
+    virDomainObjPtr vm;
+    virQEMUDriverPtr driver = domain->conn->privateData;
+    char uuidstr[VIR_UUID_STRING_BUFLEN];
+
+    vm = virDomainObjListFindByUUID(driver->domains, domain->uuid);
+    if (!vm) {
+        virUUIDFormat(domain->uuid, uuidstr);
+        virReportError(VIR_ERR_NO_DOMAIN,
+                       _("no domain with matching uuid '%s' (%s)"),
+                       uuidstr, domain->name);
+        return NULL;
+    }
+
+    return vm;
+}
+
+
 struct _qemuDomainLogContext {
     virObject parent;
 

src/qemu/qemu_domain.h

@@ -593,6 +593,7 @@ struct _qemuDomainXmlNsDef {
     char **capsdel;
 };
 
+virDomainObjPtr qemuDomainObjFromDomain(virDomainPtr domain);
 
 qemuDomainSaveCookiePtr qemuDomainSaveCookieNew(virDomainObjPtr vm);