qom: Move QMP command handlers to qom/

The handlers for qapi/qom.json's QMP commands are in
monitor/qmp-cmds.c.  Move them to new qom/qom-qmp-cmds.c, where they
are covered by MAINTAINERS section QOM, just like qapi/qom.json.

Move along qmp_device_list_properties() even though it's specified in
qapi/qdev.json, because it's so similar to qmp_qom_list_properties().

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrange" <berrange@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190619201050.19040-6-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

2 files changed, 324 insertions, 0 deletions

diff --git a/qom/Makefile.objs b/qom/Makefile.objs
index 516349eec3..5fb43b842c 100644
--- a/qom/Makefile.objs
+++ b/qom/Makefile.objs
@@ -2,3 +2,4 @@ qom-obj-y = object.o container.o qom-qobject.o
 qom-obj-y += object_interfaces.o
 
 common-obj-y = cpu.o
+common-obj-$(CONFIG_SOFTMMU) += qom-qmp-cmds.o
diff --git a/qom/qom-qmp-cmds.c b/qom/qom-qmp-cmds.c
new file mode 100644
index 0000000000..e046a0f190
--- /dev/null
+++ b/qom/qom-qmp-cmds.c
@@ -0,0 +1,323 @@
+/*
+ * QMP commands related to QOM
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * Authors:
+ *  Anthony Liguori   <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2.  See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/qdev.h"
+#include "qapi/error.h"
+#include "qapi/qapi-commands-qdev.h"
+#include "qapi/qapi-commands-qom.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qerror.h"
+#include "qapi/qobject-input-visitor.h"
+#include "qemu/cutils.h"
+#include "qom/object_interfaces.h"
+#include "qom/qom-qobject.h"
+
+ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
+{
+    Object *obj;
+    bool ambiguous = false;
+    ObjectPropertyInfoList *props = NULL;
+    ObjectProperty *prop;
+    ObjectPropertyIterator iter;
+
+    obj = object_resolve_path(path, &ambiguous);
+    if (obj == NULL) {
+        if (ambiguous) {
+            error_setg(errp, "Path '%s' is ambiguous", path);
+        } else {
+            error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                      "Device '%s' not found", path);
+        }
+        return NULL;
+    }
+
+    object_property_iter_init(&iter, obj);
+    while ((prop = object_property_iter_next(&iter))) {
+        ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
+
+        entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
+        entry->next = props;
+        props = entry;
+
+        entry->value->name = g_strdup(prop->name);
+        entry->value->type = g_strdup(prop->type);
+    }
+
+    return props;
+}
+
+void qmp_qom_set(const char *path, const char *property, QObject *value,
+                 Error **errp)
+{
+    Object *obj;
+
+    obj = object_resolve_path(path, NULL);
+    if (!obj) {
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", path);
+        return;
+    }
+
+    object_property_set_qobject(obj, value, property, errp);
+}
+
+QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
+{
+    Object *obj;
+
+    obj = object_resolve_path(path, NULL);
+    if (!obj) {
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", path);
+        return NULL;
+    }
+
+    return object_property_get_qobject(obj, property, errp);
+}
+
+static void qom_list_types_tramp(ObjectClass *klass, void *data)
+{
+    ObjectTypeInfoList *e, **pret = data;
+    ObjectTypeInfo *info;
+    ObjectClass *parent = object_class_get_parent(klass);
+
+    info = g_malloc0(sizeof(*info));
+    info->name = g_strdup(object_class_get_name(klass));
+    info->has_abstract = info->abstract = object_class_is_abstract(klass);
+    if (parent) {
+        info->has_parent = true;
+        info->parent = g_strdup(object_class_get_name(parent));
+    }
+
+    e = g_malloc0(sizeof(*e));
+    e->value = info;
+    e->next = *pret;
+    *pret = e;
+}
+
+ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
+                                       const char *implements,
+                                       bool has_abstract,
+                                       bool abstract,
+                                       Error **errp)
+{
+    ObjectTypeInfoList *ret = NULL;
+
+    object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);
+
+    return ret;
+}
+
+/* Return a DevicePropertyInfo for a qdev property.
+ *
+ * If a qdev property with the given name does not exist, use the given default
+ * type.  If the qdev property info should not be shown, return NULL.
+ *
+ * The caller must free the return value.
+ */
+static ObjectPropertyInfo *make_device_property_info(ObjectClass *klass,
+                                                  const char *name,
+                                                  const char *default_type,
+                                                  const char *description)
+{
+    ObjectPropertyInfo *info;
+    Property *prop;
+
+    do {
+        for (prop = DEVICE_CLASS(klass)->props; prop && prop->name; prop++) {
+            if (strcmp(name, prop->name) != 0) {
+                continue;
+            }
+
+            /*
+             * TODO Properties without a parser are just for dirty hacks.
+             * qdev_prop_ptr is the only such PropertyInfo.  It's marked
+             * for removal.  This conditional should be removed along with
+             * it.
+             */
+            if (!prop->info->set && !prop->info->create) {
+                return NULL;           /* no way to set it, don't show */
+            }
+
+            info = g_malloc0(sizeof(*info));
+            info->name = g_strdup(prop->name);
+            info->type = default_type ? g_strdup(default_type)
+                                      : g_strdup(prop->info->name);
+            info->has_description = !!prop->info->description;
+            info->description = g_strdup(prop->info->description);
+            return info;
+        }
+        klass = object_class_get_parent(klass);
+    } while (klass != object_class_by_name(TYPE_DEVICE));
+
+    /* Not a qdev property, use the default type */
+    info = g_malloc0(sizeof(*info));
+    info->name = g_strdup(name);
+    info->type = g_strdup(default_type);
+    info->has_description = !!description;
+    info->description = g_strdup(description);
+
+    return info;
+}
+
+ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
+                                                Error **errp)
+{
+    ObjectClass *klass;
+    Object *obj;
+    ObjectProperty *prop;
+    ObjectPropertyIterator iter;
+    ObjectPropertyInfoList *prop_list = NULL;
+
+    klass = object_class_by_name(typename);
+    if (klass == NULL) {
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", typename);
+        return NULL;
+    }
+
+    klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
+    if (klass == NULL) {
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_DEVICE);
+        return NULL;
+    }
+
+    if (object_class_is_abstract(klass)) {
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
+                   "non-abstract device type");
+        return NULL;
+    }
+
+    obj = object_new(typename);
+
+    object_property_iter_init(&iter, obj);
+    while ((prop = object_property_iter_next(&iter))) {
+        ObjectPropertyInfo *info;
+        ObjectPropertyInfoList *entry;
+
+        /* Skip Object and DeviceState properties */
+        if (strcmp(prop->name, "type") == 0 ||
+            strcmp(prop->name, "realized") == 0 ||
+            strcmp(prop->name, "hotpluggable") == 0 ||
+            strcmp(prop->name, "hotplugged") == 0 ||
+            strcmp(prop->name, "parent_bus") == 0) {
+            continue;
+        }
+
+        /* Skip legacy properties since they are just string versions of
+         * properties that we already list.
+         */
+        if (strstart(prop->name, "legacy-", NULL)) {
+            continue;
+        }
+
+        info = make_device_property_info(klass, prop->name, prop->type,
+                                         prop->description);
+        if (!info) {
+            continue;
+        }
+
+        entry = g_malloc0(sizeof(*entry));
+        entry->value = info;
+        entry->next = prop_list;
+        prop_list = entry;
+    }
+
+    object_unref(obj);
+
+    return prop_list;
+}
+
+ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
+                                             Error **errp)
+{
+    ObjectClass *klass;
+    Object *obj = NULL;
+    ObjectProperty *prop;
+    ObjectPropertyIterator iter;
+    ObjectPropertyInfoList *prop_list = NULL;
+
+    klass = object_class_by_name(typename);
+    if (klass == NULL) {
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Class '%s' not found", typename);
+        return NULL;
+    }
+
+    klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
+    if (klass == NULL) {
+        error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
+        return NULL;
+    }
+
+    if (object_class_is_abstract(klass)) {
+        object_class_property_iter_init(&iter, klass);
+    } else {
+        obj = object_new(typename);
+        object_property_iter_init(&iter, obj);
+    }
+    while ((prop = object_property_iter_next(&iter))) {
+        ObjectPropertyInfo *info;
+        ObjectPropertyInfoList *entry;
+
+        info = g_malloc0(sizeof(*info));
+        info->name = g_strdup(prop->name);
+        info->type = g_strdup(prop->type);
+        info->has_description = !!prop->description;
+        info->description = g_strdup(prop->description);
+
+        entry = g_malloc0(sizeof(*entry));
+        entry->value = info;
+        entry->next = prop_list;
+        prop_list = entry;
+    }
+
+    object_unref(obj);
+
+    return prop_list;
+}
+
+void qmp_object_add(const char *type, const char *id,
+                    bool has_props, QObject *props, Error **errp)
+{
+    QDict *pdict;
+    Visitor *v;
+    Object *obj;
+
+    if (props) {
+        pdict = qobject_to(QDict, props);
+        if (!pdict) {
+            error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
+            return;
+        }
+        qobject_ref(pdict);
+    } else {
+        pdict = qdict_new();
+    }
+
+    v = qobject_input_visitor_new(QOBJECT(pdict));
+    obj = user_creatable_add_type(type, id, pdict, v, errp);
+    visit_free(v);
+    if (obj) {
+        object_unref(obj);
+    }
+    qobject_unref(pdict);
+}
+
+void qmp_object_del(const char *id, Error **errp)
+{
+    user_creatable_del(id, errp);
+}