qom/qom-qmp-cmds.c

   1 /*
   2  * QMP commands related to QOM
   3  *
   4  * Copyright IBM, Corp. 2011
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  * Contributions after 2012-01-13 are licensed under the terms of the
  13  * GNU GPL, version 2 or (at your option) any later version.
  14  */
  15
  16 #include "qemu/osdep.h"
  17 #include "block/qdict.h"
  18 #include "hw/qdev-core.h"
  19 #include "qapi/error.h"
  20 #include "qapi/qapi-commands-qdev.h"
  21 #include "qapi/qapi-commands-qom.h"
  22 #include "qapi/qmp/qdict.h"
  23 #include "qapi/qmp/qerror.h"
  24 #include "qapi/qobject-input-visitor.h"
  25 #include "qemu/cutils.h"
  26 #include "qom/object_interfaces.h"
  27 #include "qom/qom-qobject.h"
  28
  29 ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
  30 {
  31     Object *obj;
  32     bool ambiguous = false;
  33     ObjectPropertyInfoList *props = NULL;
  34     ObjectProperty *prop;
  35     ObjectPropertyIterator iter;
  36
  37     obj = object_resolve_path(path, &ambiguous);
  38     if (obj == NULL) {
  39         if (ambiguous) {
  40             error_setg(errp, "Path '%s' is ambiguous", path);
  41         } else {
  42             error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
  43                       "Device '%s' not found", path);
  44         }
  45         return NULL;
  46     }
  47
  48     object_property_iter_init(&iter, obj);
  49     while ((prop = object_property_iter_next(&iter))) {
  50         ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
  51
  52         entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
  53         entry->next = props;
  54         props = entry;
  55
  56         entry->value->name = g_strdup(prop->name);
  57         entry->value->type = g_strdup(prop->type);
  58     }
  59
  60     return props;
  61 }
  62
  63 void qmp_qom_set(const char *path, const char *property, QObject *value,
  64                  Error **errp)
  65 {
  66     Object *obj;
  67
  68     obj = object_resolve_path(path, NULL);
  69     if (!obj) {
  70         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
  71                   "Device '%s' not found", path);
  72         return;
  73     }
  74
  75     object_property_set_qobject(obj, value, property, errp);
  76 }
  77
  78 QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
  79 {
  80     Object *obj;
  81
  82     obj = object_resolve_path(path, NULL);
  83     if (!obj) {
  84         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
  85                   "Device '%s' not found", path);
  86         return NULL;
  87     }
  88
  89     return object_property_get_qobject(obj, property, errp);
  90 }
  91
  92 static void qom_list_types_tramp(ObjectClass *klass, void *data)
  93 {
  94     ObjectTypeInfoList *e, **pret = data;
  95     ObjectTypeInfo *info;
  96     ObjectClass *parent = object_class_get_parent(klass);
  97
  98     info = g_malloc0(sizeof(*info));
  99     info->name = g_strdup(object_class_get_name(klass));
 100     info->has_abstract = info->abstract = object_class_is_abstract(klass);
 101     if (parent) {
 102         info->has_parent = true;
 103         info->parent = g_strdup(object_class_get_name(parent));
 104     }
 105
 106     e = g_malloc0(sizeof(*e));
 107     e->value = info;
 108     e->next = *pret;
 109     *pret = e;
 110 }
 111
 112 ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
 113                                        const char *implements,
 114                                        bool has_abstract,
 115                                        bool abstract,
 116                                        Error **errp)
 117 {
 118     ObjectTypeInfoList *ret = NULL;
 119
 120     object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);
 121
 122     return ret;
 123 }
 124
 125 ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
 126                                                 Error **errp)
 127 {
 128     ObjectClass *klass;
 129     Object *obj;
 130     ObjectProperty *prop;
 131     ObjectPropertyIterator iter;
 132     ObjectPropertyInfoList *prop_list = NULL;
 133
 134     klass = object_class_by_name(typename);
 135     if (klass == NULL) {
 136         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 137                   "Device '%s' not found", typename);
 138         return NULL;
 139     }
 140
 141     klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
 142     if (klass == NULL) {
 143         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_DEVICE);
 144         return NULL;
 145     }
 146
 147     if (object_class_is_abstract(klass)) {
 148         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
 149                    "non-abstract device type");
 150         return NULL;
 151     }
 152
 153     obj = object_new(typename);
 154
 155     object_property_iter_init(&iter, obj);
 156     while ((prop = object_property_iter_next(&iter))) {
 157         ObjectPropertyInfo *info;
 158         ObjectPropertyInfoList *entry;
 159
 160         /* Skip Object and DeviceState properties */
 161         if (strcmp(prop->name, "type") == 0 ||
 162             strcmp(prop->name, "realized") == 0 ||
 163             strcmp(prop->name, "hotpluggable") == 0 ||
 164             strcmp(prop->name, "hotplugged") == 0 ||
 165             strcmp(prop->name, "parent_bus") == 0) {
 166             continue;
 167         }
 168
 169         /* Skip legacy properties since they are just string versions of
 170          * properties that we already list.
 171          */
 172         if (strstart(prop->name, "legacy-", NULL)) {
 173             continue;
 174         }
 175
 176         info = g_new0(ObjectPropertyInfo, 1);
 177         info->name = g_strdup(prop->name);
 178         info->type = g_strdup(prop->type);
 179         info->has_description = !!prop->description;
 180         info->description = g_strdup(prop->description);
 181         info->default_value = qobject_ref(prop->defval);
 182         info->has_default_value = !!info->default_value;
 183
 184         entry = g_malloc0(sizeof(*entry));
 185         entry->value = info;
 186         entry->next = prop_list;
 187         prop_list = entry;
 188     }
 189
 190     object_unref(obj);
 191
 192     return prop_list;
 193 }
 194
 195 ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
 196                                              Error **errp)
 197 {
 198     ObjectClass *klass;
 199     Object *obj = NULL;
 200     ObjectProperty *prop;
 201     ObjectPropertyIterator iter;
 202     ObjectPropertyInfoList *prop_list = NULL;
 203
 204     klass = object_class_by_name(typename);
 205     if (klass == NULL) {
 206         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 207                   "Class '%s' not found", typename);
 208         return NULL;
 209     }
 210
 211     klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
 212     if (klass == NULL) {
 213         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
 214         return NULL;
 215     }
 216
 217     if (object_class_is_abstract(klass)) {
 218         object_class_property_iter_init(&iter, klass);
 219     } else {
 220         obj = object_new(typename);
 221         object_property_iter_init(&iter, obj);
 222     }
 223     while ((prop = object_property_iter_next(&iter))) {
 224         ObjectPropertyInfo *info;
 225         ObjectPropertyInfoList *entry;
 226
 227         info = g_malloc0(sizeof(*info));
 228         info->name = g_strdup(prop->name);
 229         info->type = g_strdup(prop->type);
 230         info->has_description = !!prop->description;
 231         info->description = g_strdup(prop->description);
 232
 233         entry = g_malloc0(sizeof(*entry));
 234         entry->value = info;
 235         entry->next = prop_list;
 236         prop_list = entry;
 237     }
 238
 239     object_unref(obj);
 240
 241     return prop_list;
 242 }
 243
 244 void qmp_object_add(QDict *qdict, QObject **ret_data, Error **errp)
 245 {
 246     QObject *props;
 247     QDict *pdict;
 248     Visitor *v;
 249     Object *obj;
 250     g_autofree char *type = NULL;
 251     g_autofree char *id = NULL;
 252
 253     type = g_strdup(qdict_get_try_str(qdict, "qom-type"));
 254     if (!type) {
 255         error_setg(errp, QERR_MISSING_PARAMETER, "qom-type");
 256         return;
 257     }
 258     qdict_del(qdict, "qom-type");
 259
 260     id = g_strdup(qdict_get_try_str(qdict, "id"));
 261     if (!id) {
 262         error_setg(errp, QERR_MISSING_PARAMETER, "id");
 263         return;
 264     }
 265     qdict_del(qdict, "id");
 266
 267     props = qdict_get(qdict, "props");
 268     if (props) {
 269         pdict = qobject_to(QDict, props);
 270         if (!pdict) {
 271             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 272             return;
 273         }
 274         qobject_ref(pdict);
 275         qdict_del(qdict, "props");
 276         qdict_join(qdict, pdict, false);
 277         if (qdict_size(pdict) != 0) {
 278             error_setg(errp, "Option in 'props' conflicts with top level");
 279             qobject_unref(pdict);
 280             return;
 281         }
 282         qobject_unref(pdict);
 283     }
 284
 285     v = qobject_input_visitor_new(QOBJECT(qdict));
 286     obj = user_creatable_add_type(type, id, qdict, v, errp);
 287     visit_free(v);
 288     if (obj) {
 289         object_unref(obj);
 290     }
 291     *ret_data = QOBJECT(qdict_new());
 292 }
 293
 294 void qmp_object_del(const char *id, Error **errp)
 295 {
 296     user_creatable_del(id, errp);
 297 }