Commit 6a146eba authored by Anthony Liguori's avatar Anthony Liguori
Browse files

qom: add string property type 



Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent ad6d45fa

hw/qdev.c

+59 −0
Original line number Diff line number Diff line
@@ -1449,3 +1449,62 @@ DeviceState *qdev_resolve_path(const char *path, bool *ambiguous) 
    return dev;

}



typedef struct StringProperty

{

    char *(*get)(DeviceState *, Error **);

    void (*set)(DeviceState *, const char *, Error **);

} StringProperty;



static void qdev_property_get_str(DeviceState *dev, Visitor *v, void *opaque,

                                  const char *name, Error **errp)

{

    StringProperty *prop = opaque;

    char *value;



    value = prop->get(dev, errp);

    if (value) {

        visit_type_str(v, &value, name, errp);

        g_free(value);

    }

}



static void qdev_property_set_str(DeviceState *dev, Visitor *v, void *opaque,

                                  const char *name, Error **errp)

{

    StringProperty *prop = opaque;

    char *value;

    Error *local_err = NULL;



    visit_type_str(v, &value, name, &local_err);

    if (local_err) {

        error_propagate(errp, local_err);

        return;

    }



    prop->set(dev, value, errp);

    g_free(value);

}



static void qdev_property_release_str(DeviceState *dev, const char *name,

                                      void *opaque)

{

    StringProperty *prop = opaque;

    g_free(prop);

}



void qdev_property_add_str(DeviceState *dev, const char *name,

                           char *(*get)(DeviceState *, Error **),

                           void (*set)(DeviceState *, const char *, Error **),

                           Error **errp)

{

    StringProperty *prop = g_malloc0(sizeof(*prop));



    prop->get = get;

    prop->set = set;



    qdev_property_add(dev, name, "string",

                      get ? qdev_property_get_str : NULL,

                      set ? qdev_property_set_str : NULL,

                      qdev_property_release_str,

                      prop, errp);

}

hw/qdev.h

+22 −0
Original line number Diff line number Diff line
@@ -574,4 +574,26 @@ void qdev_property_add_link(DeviceState *dev, const char *name, 
                            const char *type, DeviceState **child,

                            Error **errp);



/**

 * @qdev_property_add_str

 *

 * Add a string property using getters/setters.  This function will add a

 * property of type 'string'.

 *

 * @dev - the device to add a property to

 *

 * @name - the name of the property

 *

 * @get - the getter or NULL if the property is write-only.  This function must

 *        return a string to be freed by @g_free().

 *

 * @set - the setter or NULL if the property is read-only

 *

 * @errp - if an error occurs, a pointer to an area to store the error

 */

void qdev_property_add_str(DeviceState *dev, const char *name,

                           char *(*get)(DeviceState *, Error **),

                           void (*set)(DeviceState *, const char *, Error **),

                           Error **errp);



#endif