@@ -71,6 +71,7 @@ void blk_detach_dev(BlockBackend *blk, DeviceState *dev);
DeviceState *blk_get_attached_dev(BlockBackend *blk);
BlockBackend *blk_by_dev(void *dev);
BlockBackend *blk_by_qdev_id(const char *id, Error **errp);
+BlockBackend *blk_by_export_id(const char *id, Error **errp);
void blk_set_dev_ops(BlockBackend *blk, const BlockDevOps *ops, void *opaque);
void blk_activate(BlockBackend *blk, Error **errp);
@@ -368,3 +368,21 @@ BlockExportInfoList *qmp_query_block_exports(Error **errp)
return head;
}
+
+BlockBackend *blk_by_export_id(const char *id, Error **errp)
+{
+ BlockExport *exp;
+
+ exp = blk_exp_find(id);
+ if (exp == NULL) {
+ error_setg(errp, "Export '%s' not found", id);
+ return NULL;
+ }
+
+ if (!exp->blk) {
+ error_setg(errp, "Export '%s' is empty", id);
+ return NULL;
+ }
+
+ return exp->blk;
+}
We need it for further blockdev-replace functionality. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> --- include/sysemu/block-backend-global-state.h | 1 + block/export/export.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+)