vvfat: initialize memory after allocating it

[thirdparty/qemu.git] / qdev-monitor.c

diff --git a/qdev-monitor.c b/qdev-monitor.c
index 5f2fcdfc455113bb8076dfe75ec2e8b177e60ca3..8fd6df93d2d28cec64c4a09646ba59b9da2ae76f 100644 (file)
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -29,6 +29,7 @@
 #include "qemu/error-report.h"
 #include "qemu/help_option.h"
 #include "sysemu/block-backend.h"
+#include "migration/misc.h"
 
 /*
  * Aliases were a bad idea from the start.  Let's keep them
@@ -113,7 +114,7 @@ static void qdev_print_devinfo(DeviceClass *dc)
     if (dc->desc) {
         error_printf(", desc \"%s\"", dc->desc);
     }
-    if (dc->cannot_instantiate_with_device_add_yet) {
+    if (!dc->user_creatable) {
         error_printf(", no-user");
     }
     error_printf("\n");
@@ -155,7 +156,7 @@ static void qdev_print_devinfos(bool show_no_user)
                  ? !test_bit(i, dc->categories)
                  : !bitmap_empty(dc->categories, DEVICE_CATEGORY_MAX))
                 || (!show_no_user
-                    && dc->cannot_instantiate_with_device_add_yet)) {
+                    && !dc->user_creatable)) {
                 continue;
             }
             if (!cat_printed) {
@@ -240,7 +241,7 @@ static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
     }
 
     dc = DEVICE_CLASS(oc);
-    if (dc->cannot_instantiate_with_device_add_yet ||
+    if (!dc->user_creatable ||
         (qdev_hotplug && !dc->hotpluggable)) {
         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
                    "pluggable device type");
@@ -603,6 +604,11 @@ DeviceState *qdev_device_add(QemuOpts *opts, Error **errp)
         return NULL;
     }
 
+    if (!migration_is_idle()) {
+        error_setg(errp, "device_add not allowed while migrating");
+        return NULL;
+    }
+
     /* create device */
     dev = DEVICE(object_new(driver));
 
@@ -836,6 +842,45 @@ static DeviceState *find_device_state(const char *id, Error **errp)
     return DEVICE(obj);
 }
 
+void qdev_unplug(DeviceState *dev, Error **errp)
+{
+    DeviceClass *dc = DEVICE_GET_CLASS(dev);
+    HotplugHandler *hotplug_ctrl;
+    HotplugHandlerClass *hdc;
+
+    if (dev->parent_bus && !qbus_is_hotpluggable(dev->parent_bus)) {
+        error_setg(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
+        return;
+    }
+
+    if (!dc->hotpluggable) {
+        error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
+                   object_get_typename(OBJECT(dev)));
+        return;
+    }
+
+    if (!migration_is_idle()) {
+        error_setg(errp, "device_del not allowed while migrating");
+        return;
+    }
+
+    qdev_hot_removed = true;
+
+    hotplug_ctrl = qdev_get_hotplug_handler(dev);
+    /* hotpluggable device MUST have HotplugHandler, if it doesn't
+     * then something is very wrong with it */
+    g_assert(hotplug_ctrl);
+
+    /* If device supports async unplug just request it to be done,
+     * otherwise just remove it synchronously */
+    hdc = HOTPLUG_HANDLER_GET_CLASS(hotplug_ctrl);
+    if (hdc->unplug_request) {
+        hotplug_handler_unplug_request(hotplug_ctrl, dev, errp);
+    } else {
+        hotplug_handler_unplug(hotplug_ctrl, dev, errp);
+    }
+}
+
 void qmp_device_del(const char *id, Error **errp)
 {
     DeviceState *dev = find_device_state(id, errp);