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 "qemu/cutils.h"
  25 #include "qom/object_interfaces.h"
  26 #include "qom/qom-qobject.h"
  27
  28 ObjectPropertyInfoList *qmp_qom_list(const char *path, Error **errp)
  29 {
  30     Object *obj;
  31     bool ambiguous = false;
  32     ObjectPropertyInfoList *props = NULL;
  33     ObjectProperty *prop;
  34     ObjectPropertyIterator iter;
  35
  36     obj = object_resolve_path(path, &ambiguous);
  37     if (obj == NULL) {
  38         if (ambiguous) {
  39             error_setg(errp, "Path '%s' is ambiguous", path);
  40         } else {
  41             error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
  42                       "Device '%s' not found", path);
  43         }
  44         return NULL;
  45     }
  46
  47     object_property_iter_init(&iter, obj);
  48     while ((prop = object_property_iter_next(&iter))) {
  49         ObjectPropertyInfoList *entry = g_malloc0(sizeof(*entry));
  50
  51         entry->value = g_malloc0(sizeof(ObjectPropertyInfo));
  52         entry->next = props;
  53         props = entry;
  54
  55         entry->value->name = g_strdup(prop->name);
  56         entry->value->type = g_strdup(prop->type);
  57     }
  58
  59     return props;
  60 }
  61
  62 void qmp_qom_set(const char *path, const char *property, QObject *value,
  63                  Error **errp)
  64 {
  65     Object *obj;
  66
  67     obj = object_resolve_path(path, NULL);
  68     if (!obj) {
  69         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
  70                   "Device '%s' not found", path);
  71         return;
  72     }
  73
  74     object_property_set_qobject(obj, property, value, errp);
  75 }
  76
  77 QObject *qmp_qom_get(const char *path, const char *property, Error **errp)
  78 {
  79     Object *obj;
  80
  81     obj = object_resolve_path(path, NULL);
  82     if (!obj) {
  83         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
  84                   "Device '%s' not found", path);
  85         return NULL;
  86     }
  87
  88     return object_property_get_qobject(obj, property, errp);
  89 }
  90
  91 static void qom_list_types_tramp(ObjectClass *klass, void *data)
  92 {
  93     ObjectTypeInfoList *e, **pret = data;
  94     ObjectTypeInfo *info;
  95     ObjectClass *parent = object_class_get_parent(klass);
  96
  97     info = g_malloc0(sizeof(*info));
  98     info->name = g_strdup(object_class_get_name(klass));
  99     info->has_abstract = info->abstract = object_class_is_abstract(klass);
 100     if (parent) {
 101         info->has_parent = true;
 102         info->parent = g_strdup(object_class_get_name(parent));
 103     }
 104
 105     e = g_malloc0(sizeof(*e));
 106     e->value = info;
 107     e->next = *pret;
 108     *pret = e;
 109 }
 110
 111 ObjectTypeInfoList *qmp_qom_list_types(bool has_implements,
 112                                        const char *implements,
 113                                        bool has_abstract,
 114                                        bool abstract,
 115                                        Error **errp)
 116 {
 117     ObjectTypeInfoList *ret = NULL;
 118
 119     module_load_qom_all();
 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 = module_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     if (!object_class_dynamic_cast(klass, TYPE_DEVICE)
 142         || object_class_is_abstract(klass)) {
 143         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
 144                    "a non-abstract device type");
 145         return NULL;
 146     }
 147
 148     obj = object_new(typename);
 149
 150     object_property_iter_init(&iter, obj);
 151     while ((prop = object_property_iter_next(&iter))) {
 152         ObjectPropertyInfo *info;
 153         ObjectPropertyInfoList *entry;
 154
 155         /* Skip Object and DeviceState properties */
 156         if (strcmp(prop->name, "type") == 0 ||
 157             strcmp(prop->name, "realized") == 0 ||
 158             strcmp(prop->name, "hotpluggable") == 0 ||
 159             strcmp(prop->name, "hotplugged") == 0 ||
 160             strcmp(prop->name, "parent_bus") == 0) {
 161             continue;
 162         }
 163
 164         /* Skip legacy properties since they are just string versions of
 165          * properties that we already list.
 166          */
 167         if (strstart(prop->name, "legacy-", NULL)) {
 168             continue;
 169         }
 170
 171         info = g_new0(ObjectPropertyInfo, 1);
 172         info->name = g_strdup(prop->name);
 173         info->type = g_strdup(prop->type);
 174         info->has_description = !!prop->description;
 175         info->description = g_strdup(prop->description);
 176         info->default_value = qobject_ref(prop->defval);
 177         info->has_default_value = !!info->default_value;
 178
 179         entry = g_malloc0(sizeof(*entry));
 180         entry->value = info;
 181         entry->next = prop_list;
 182         prop_list = entry;
 183     }
 184
 185     object_unref(obj);
 186
 187     return prop_list;
 188 }
 189
 190 ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
 191                                              Error **errp)
 192 {
 193     ObjectClass *klass;
 194     Object *obj = NULL;
 195     ObjectProperty *prop;
 196     ObjectPropertyIterator iter;
 197     ObjectPropertyInfoList *prop_list = NULL;
 198
 199     klass = object_class_by_name(typename);
 200     if (klass == NULL) {
 201         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 202                   "Class '%s' not found", typename);
 203         return NULL;
 204     }
 205
 206     if (!object_class_dynamic_cast(klass, TYPE_OBJECT)) {
 207         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
 208                    "a QOM type");
 209         return NULL;
 210     }
 211
 212     if (object_class_is_abstract(klass)) {
 213         object_class_property_iter_init(&iter, klass);
 214     } else {
 215         obj = object_new(typename);
 216         object_property_iter_init(&iter, obj);
 217     }
 218     while ((prop = object_property_iter_next(&iter))) {
 219         ObjectPropertyInfo *info;
 220         ObjectPropertyInfoList *entry;
 221
 222         info = g_malloc0(sizeof(*info));
 223         info->name = g_strdup(prop->name);
 224         info->type = g_strdup(prop->type);
 225         info->has_description = !!prop->description;
 226         info->description = g_strdup(prop->description);
 227
 228         entry = g_malloc0(sizeof(*entry));
 229         entry->value = info;
 230         entry->next = prop_list;
 231         prop_list = entry;
 232     }
 233
 234     object_unref(obj);
 235
 236     return prop_list;
 237 }
 238
 239 void qmp_object_add(QDict *qdict, QObject **ret_data, Error **errp)
 240 {
 241     QObject *props;
 242     QDict *pdict;
 243
 244     props = qdict_get(qdict, "props");
 245     if (props) {
 246         pdict = qobject_to(QDict, props);
 247         if (!pdict) {
 248             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 249             return;
 250         }
 251         qobject_ref(pdict);
 252         qdict_del(qdict, "props");
 253         qdict_join(qdict, pdict, false);
 254         if (qdict_size(pdict) != 0) {
 255             error_setg(errp, "Option in 'props' conflicts with top level");
 256             qobject_unref(pdict);
 257             return;
 258         }
 259         qobject_unref(pdict);
 260     }
 261
 262     user_creatable_add_dict(qdict, false, errp);
 263 }
 264
 265 void qmp_object_del(const char *id, Error **errp)
 266 {
 267     user_creatable_del(id, errp);
 268 }