return 0;
}
+static char *bdrv_child_get_parent_desc(BdrvChild *c)
+{
+ BlockDriverState *parent = c->opaque;
+ return g_strdup(bdrv_get_device_or_node_name(parent));
+}
+
static void bdrv_child_cb_drained_begin(BdrvChild *child)
{
BlockDriverState *bs = child->opaque;
}
const BdrvChildRole child_file = {
+ .get_parent_desc = bdrv_child_get_parent_desc,
.inherit_options = bdrv_inherited_options,
.drained_begin = bdrv_child_cb_drained_begin,
.drained_end = bdrv_child_cb_drained_end,
}
const BdrvChildRole child_format = {
+ .get_parent_desc = bdrv_child_get_parent_desc,
.inherit_options = bdrv_inherited_fmt_options,
.drained_begin = bdrv_child_cb_drained_begin,
.drained_end = bdrv_child_cb_drained_end,
}
const BdrvChildRole child_backing = {
+ .get_parent_desc = bdrv_child_get_parent_desc,
.inherit_options = bdrv_backing_options,
.drained_begin = bdrv_child_cb_drained_begin,
.drained_end = bdrv_child_cb_drained_end,
static void drive_info_del(DriveInfo *dinfo);
static BlockBackend *bdrv_first_blk(BlockDriverState *bs);
+static char *blk_get_attached_dev_id(BlockBackend *blk);
/* All BlockBackends */
static QTAILQ_HEAD(, BlockBackend) block_backends =
static void blk_root_change_media(BdrvChild *child, bool load);
static void blk_root_resize(BdrvChild *child);
+static char *blk_root_get_parent_desc(BdrvChild *child)
+{
+ BlockBackend *blk = child->opaque;
+ char *dev_id;
+
+ if (blk->name) {
+ return g_strdup(blk->name);
+ }
+
+ dev_id = blk_get_attached_dev_id(blk);
+ if (*dev_id) {
+ return dev_id;
+ } else {
+ /* TODO Callback into the BB owner for something more detailed */
+ g_free(dev_id);
+ return g_strdup("a block device");
+ }
+}
+
static const char *blk_root_get_name(BdrvChild *child)
{
return blk_name(child->opaque);
.change_media = blk_root_change_media,
.resize = blk_root_resize,
.get_name = blk_root_get_name,
+ .get_parent_desc = blk_root_get_parent_desc,
.drained_begin = blk_root_drained_begin,
.drained_end = blk_root_drained_end,
* name), or NULL if the parent can't provide a better name. */
const char* (*get_name)(BdrvChild *child);
+ /* Returns a malloced string that describes the parent of the child for a
+ * human reader. This could be a node-name, BlockBackend name, qdev ID or
+ * QOM path of the device owning the BlockBackend, job type and ID etc. The
+ * caller is responsible for freeing the memory. */
+ char* (*get_parent_desc)(BdrvChild *child);
+
/*
* If this pair of functions is implemented, the parent doesn't issue new
* requests after returning from .drained_begin() until .drained_end() is