Re: [PATCH v3 3/9] hyperv: implement domainSetAutostart

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On 10/21/20 10:46 AM, Matt Coleman wrote:
Co-authored-by: Sri Ramanujam <sramanujam@xxxxxxxxx>
Signed-off-by: Matt Coleman <matt@xxxxxxxxx>
---
  src/hyperv/hyperv_driver.c | 85 ++++++++++++++++++++++++++++++++++++++
  1 file changed, 85 insertions(+)

diff --git a/src/hyperv/hyperv_driver.c b/src/hyperv/hyperv_driver.c
index 091b77ebc4..1521cf4244 100644
--- a/src/hyperv/hyperv_driver.c
+++ b/src/hyperv/hyperv_driver.c
@@ -1316,6 +1316,90 @@ hypervDomainGetAutostart(virDomainPtr domain, int *autostart)
+static int
+hypervDomainSetAutostart(virDomainPtr domain, int autostart)
+{
+    int result = -1;
+    char uuid_string[VIR_UUID_STRING_BUFLEN];
+    hypervPrivate *priv = domain->conn->privateData;
+    Msvm_VirtualSystemSettingData *vssd = NULL;
+    g_autoptr(hypervInvokeParamsList) params = NULL;
+    g_auto(virBuffer) eprQuery = VIR_BUFFER_INITIALIZER;
+    g_autoptr(virHashTable) autostartParam = NULL;
+    const char *methodName = NULL;
+    hypervWmiClassInfoListPtr embeddedParamClass = NULL;
+    const char *enabledValue = NULL, *disabledValue = NULL;
+    const char *embeddedParamName = NULL;
+
+    switch (priv->wmiVersion) {
+    case HYPERV_WMI_VERSION_V1:
+        methodName = "ModifyVirtualSystem";
+        embeddedParamClass = Msvm_VirtualSystemGlobalSettingData_WmiInfo;
+        enabledValue = "2";
+        disabledValue = "0";
+        embeddedParamName = "SystemSettingData";
+        break;
+    case HYPERV_WMI_VERSION_V2:
+        methodName = "ModifySystemSettings";
+        embeddedParamClass = Msvm_VirtualSystemSettingData_WmiInfo;
+        enabledValue = "4";
+        disabledValue = "2";
+        embeddedParamName = "SystemSettings";
+        break;
+    }
+
+    virUUIDFormat(domain->uuid, uuid_string);
+
+    if (hypervGetVSSDFromUUID(priv, uuid_string, &vssd) < 0)
+        goto cleanup;
+
+    params = hypervCreateInvokeParamsList(priv, methodName,
+                                          MSVM_VIRTUALSYSTEMMANAGEMENTSERVICE_SELECTOR,
+                                          Msvm_VirtualSystemManagementService_WmiInfo);
+
+    if (!params) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not create params"));
+        goto cleanup;
+    }
+
+    if (priv->wmiVersion == HYPERV_WMI_VERSION_V1) {
+        virBufferEscapeSQL(&eprQuery,
+                           MSVM_COMPUTERSYSTEM_WQL_SELECT "WHERE Name = '%s'",
+                           uuid_string);
+
+        if (hypervAddEprParam(params, "ComputerSystem", priv, &eprQuery,
+                              Msvm_ComputerSystem_WmiInfo) < 0)
+            goto cleanup;
+    }
+
+    autostartParam = hypervCreateEmbeddedParam(priv, embeddedParamClass);
+
+    if (hypervSetEmbeddedProperty(autostartParam, "AutomaticStartupAction",
+                                  autostart ? enabledValue : disabledValue) < 0)
+        goto cleanup;
+
+    if (hypervSetEmbeddedProperty(autostartParam, "InstanceID", vssd->data.common->InstanceID) < 0)
+        goto cleanup;
+
+    if (hypervAddEmbeddedParam(params, priv, embeddedParamName, &autostartParam,
+                               embeddedParamClass) < 0)

Nit pick - when you have to break an if() condition like this then the second line should be longer than the first one. Like this:

    if (hypervAddEmbeddedParam(params, priv, embeddedParamName,
                               &autostartParam, embeddedParamClass) < 0)


+        goto cleanup;
+
+    if (hypervInvokeMethod(priv, &params, NULL) < 0) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not set autostart"));

No need to report error here because hypervInvokeMethod() already reported one for us. And unfortunately we don't have stacked error messages, so this would just overwrite the error reported earlier.

Michal




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