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 "hw/qdev-core.h"
  18 #include "qapi/error.h"
  19 #include "qapi/qapi-commands-qdev.h"
  20 #include "qapi/qapi-commands-qom.h"
  21 #include "qapi/qmp/qdict.h"
  22 #include "qapi/qmp/qerror.h"
  23 #include "qapi/qobject-input-visitor.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, value, property, 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     object_class_foreach(qom_list_types_tramp, implements, abstract, &ret);
 120
 121     return ret;
 122 }
 123
 124 ObjectPropertyInfoList *qmp_device_list_properties(const char *typename,
 125                                                 Error **errp)
 126 {
 127     ObjectClass *klass;
 128     Object *obj;
 129     ObjectProperty *prop;
 130     ObjectPropertyIterator iter;
 131     ObjectPropertyInfoList *prop_list = NULL;
 132
 133     klass = object_class_by_name(typename);
 134     if (klass == NULL) {
 135         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 136                   "Device '%s' not found", typename);
 137         return NULL;
 138     }
 139
 140     klass = object_class_dynamic_cast(klass, TYPE_DEVICE);
 141     if (klass == NULL) {
 142         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_DEVICE);
 143         return NULL;
 144     }
 145
 146     if (object_class_is_abstract(klass)) {
 147         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename",
 148                    "non-abstract device type");
 149         return NULL;
 150     }
 151
 152     obj = object_new(typename);
 153
 154     object_property_iter_init(&iter, obj);
 155     while ((prop = object_property_iter_next(&iter))) {
 156         ObjectPropertyInfo *info;
 157         ObjectPropertyInfoList *entry;
 158
 159         /* Skip Object and DeviceState properties */
 160         if (strcmp(prop->name, "type") == 0 ||
 161             strcmp(prop->name, "realized") == 0 ||
 162             strcmp(prop->name, "hotpluggable") == 0 ||
 163             strcmp(prop->name, "hotplugged") == 0 ||
 164             strcmp(prop->name, "parent_bus") == 0) {
 165             continue;
 166         }
 167
 168         /* Skip legacy properties since they are just string versions of
 169          * properties that we already list.
 170          */
 171         if (strstart(prop->name, "legacy-", NULL)) {
 172             continue;
 173         }
 174
 175         info = g_new0(ObjectPropertyInfo, 1);
 176         info->name = g_strdup(prop->name);
 177         info->type = g_strdup(prop->type);
 178         info->has_description = !!prop->description;
 179         info->description = g_strdup(prop->description);
 180         info->default_value = qobject_ref(prop->defval);
 181         info->has_default_value = !!info->default_value;
 182
 183         entry = g_malloc0(sizeof(*entry));
 184         entry->value = info;
 185         entry->next = prop_list;
 186         prop_list = entry;
 187     }
 188
 189     object_unref(obj);
 190
 191     return prop_list;
 192 }
 193
 194 ObjectPropertyInfoList *qmp_qom_list_properties(const char *typename,
 195                                              Error **errp)
 196 {
 197     ObjectClass *klass;
 198     Object *obj = NULL;
 199     ObjectProperty *prop;
 200     ObjectPropertyIterator iter;
 201     ObjectPropertyInfoList *prop_list = NULL;
 202
 203     klass = object_class_by_name(typename);
 204     if (klass == NULL) {
 205         error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
 206                   "Class '%s' not found", typename);
 207         return NULL;
 208     }
 209
 210     klass = object_class_dynamic_cast(klass, TYPE_OBJECT);
 211     if (klass == NULL) {
 212         error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "typename", TYPE_OBJECT);
 213         return NULL;
 214     }
 215
 216     if (object_class_is_abstract(klass)) {
 217         object_class_property_iter_init(&iter, klass);
 218     } else {
 219         obj = object_new(typename);
 220         object_property_iter_init(&iter, obj);
 221     }
 222     while ((prop = object_property_iter_next(&iter))) {
 223         ObjectPropertyInfo *info;
 224         ObjectPropertyInfoList *entry;
 225
 226         info = g_malloc0(sizeof(*info));
 227         info->name = g_strdup(prop->name);
 228         info->type = g_strdup(prop->type);
 229         info->has_description = !!prop->description;
 230         info->description = g_strdup(prop->description);
 231
 232         entry = g_malloc0(sizeof(*entry));
 233         entry->value = info;
 234         entry->next = prop_list;
 235         prop_list = entry;
 236     }
 237
 238     object_unref(obj);
 239
 240     return prop_list;
 241 }
 242
 243 void qmp_object_add(const char *type, const char *id,
 244                     bool has_props, QObject *props, Error **errp)
 245 {
 246     QDict *pdict;
 247     Visitor *v;
 248     Object *obj;
 249
 250     if (props) {
 251         pdict = qobject_to(QDict, props);
 252         if (!pdict) {
 253             error_setg(errp, QERR_INVALID_PARAMETER_TYPE, "props", "dict");
 254             return;
 255         }
 256         qobject_ref(pdict);
 257     } else {
 258         pdict = qdict_new();
 259     }
 260
 261     v = qobject_input_visitor_new(QOBJECT(pdict));
 262     obj = user_creatable_add_type(type, id, pdict, v, errp);
 263     visit_free(v);
 264     if (obj) {
 265         object_unref(obj);
 266     }
 267     qobject_unref(pdict);
 268 }
 269
 270 void qmp_object_del(const char *id, Error **errp)
 271 {
 272     user_creatable_del(id, errp);
 273 }