parallels: implement VM creation

To create a new VM in Parallels Clud Server we should issue
"prlctl create" command, and give path to the directory,
where VM should be created. VM's storage will be in that
directory later. So in this first version find out location
of first VM's hard disk and create VM there.
Signed-off-by: NDmitry Guryanov <dguryanov@parallels.com>

src/parallels/parallels_driver.c

@@ -1539,6 +1539,78 @@ parallelsApplyChanges(virDomainObjPtr dom, virDomainDefPtr new)
     return 0;
 }
 
+static int
+parallelsCreateVm(virConnectPtr conn, virDomainDefPtr def)
+{
+    parallelsConnPtr privconn = conn->privateData;
+    int i;
+    virStorageVolDefPtr privvol = NULL;
+    virStoragePoolObjPtr pool = NULL;
+    virStorageVolPtr vol = NULL;
+    char uuidstr[VIR_UUID_STRING_BUFLEN];
+
+    for (i = 0; i < def->ndisks; i++) {
+        if (def->disks[i]->device != VIR_DOMAIN_DISK_DEVICE_DISK)
+            continue;
+
+        vol = parallelsStorageVolumeLookupByPathLocked(conn, def->disks[i]->src);
+        if (!vol) {
+            virReportError(VIR_ERR_INVALID_ARG,
+                           _("Can't find volume with path '%s'"),
+                           def->disks[i]->src);
+            return -1;
+        }
+        break;
+    }
+
+    if (!vol) {
+        /* We determine path to VM directory from volume, so
+         * let's report error if no disk until better solution
+         * will be found */
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("Can't create VM '%s' without hard disks"),
+                       (def->name ? def->name : "no name"));
+        return -1;
+    }
+
+    pool = virStoragePoolObjFindByName(&privconn->pools, vol->pool);
+    if (!pool) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("Can't find storage pool with name '%s'"),
+                       vol->pool);
+        goto error;
+    }
+
+    privvol = virStorageVolDefFindByPath(pool, def->disks[i]->src);
+    if (!privvol) {
+        virReportError(VIR_ERR_INVALID_ARG,
+                       _("Can't find storage volume definition for path '%s'"),
+                       def->disks[i]->src);
+        goto error2;
+    }
+
+    virUUIDFormat(def->uuid, uuidstr);
+
+    if (parallelsCmdRun(PRLCTL, "create", def->name, "--dst",
+                        pool->def->target.path, "--no-hdd",
+                        "--uuid", uuidstr, NULL) < 0)
+        goto error2;
+
+    if (parallelsCmdRun(PRLCTL, "set", def->name, "--vnc-mode", "auto", NULL) < 0)
+        goto error2;
+
+    virStoragePoolObjUnlock(pool);
+    virUnrefStorageVol(vol);
+
+    return 0;
+
+  error2:
+    virStoragePoolObjUnlock(pool);
+  error:
+    virUnrefStorageVol(vol);
+    return -1;
+}
+
 static virDomainPtr
 parallelsDomainDefineXML(virConnectPtr conn, const char *xml)
 {
@@ -1579,9 +1651,17 @@ parallelsDomainDefineXML(virConnectPtr conn, const char *xml)
 
         def = NULL;
     } else {
-        virReportError(VIR_ERR_NO_SUPPORT, "%s",
-                       _("Not implemented yet"));
+        if (parallelsCreateVm(conn, def))
+            goto cleanup;
+        if (parallelsLoadDomains(privconn, def->name))
             goto cleanup;
+        dom = virDomainFindByName(&privconn->domains, def->name);
+        if (!dom) {
+            virReportError(VIR_ERR_INTERNAL_ERROR,
+                           _("Domain for '%s' is not defined after creation"),
+                           (def->name ? def->name : "no name"));
+            goto cleanup;
+        }
     }
 
     ret = virGetDomain(conn, dom->def->name, dom->def->uuid);

src/parallels/parallels_storage.c

@@ -43,9 +43,6 @@
 static virStorageVolDefPtr
 parallelsStorageVolumeDefine(virStoragePoolObjPtr pool, const char *xmldesc,
                              const char *xmlfile, bool is_new);
-static virStorageVolPtr
-parallelsStorageVolumeLookupByPathLocked(virConnectPtr conn, const char *path);
-
 static virStorageVolPtr
 parallelsStorageVolumeLookupByPath(virConnectPtr conn, const char *path);
 
@@ -874,7 +871,7 @@ parallelsStorageVolumeLookupByKey(virConnectPtr conn, const char *key)
     return ret;
 }
 
-static virStorageVolPtr
+virStorageVolPtr
 parallelsStorageVolumeLookupByPathLocked(virConnectPtr conn, const char *path)
 {
     parallelsConnPtr privconn = conn->privateData;

src/parallels/parallels_utils.h

@@ -60,5 +60,7 @@ int parallelsCmdRun(const char *binary, ...)
 char * parallelsAddFileExt(const char *path, const char *ext);
 void parallelsDriverLock(parallelsConnPtr driver);
 void parallelsDriverUnlock(parallelsConnPtr driver);
+virStorageVolPtr parallelsStorageVolumeLookupByPathLocked(virConnectPtr conn,
+                                                          const char *path);
 
 #endif