[RFC PATCH 04/18] stubs: Add blk_by_qdev_id()

[Kevin Wolf <kwolf@redhat.com>]

blockdev.c uses the blk_by_qdev_id() function, so before we can use the
file in tools (i.e. outside of the system emulator), we need to add a
stub for it. The function always returns an error.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 stubs/blk-by-qdev-id.c | 9 +++++++++
 stubs/Makefile.objs    | 1 +
 2 files changed, 10 insertions(+)
 create mode 100644 stubs/blk-by-qdev-id.c

diff --git a/stubs/blk-by-qdev-id.c b/stubs/blk-by-qdev-id.c
new file mode 100644
index 0000000000..0b6160fefa
--- /dev/null
+++ b/stubs/blk-by-qdev-id.c
@@ -0,0 +1,9 @@
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "sysemu/block-backend.h"
+
+BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
+{
+    error_setg(errp, "qdev IDs/QOM paths exist only in the system emulator");
+    return NULL;
+}
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index 9f4eb25e02..77fbf72576 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -1,5 +1,6 @@
 stub-obj-y += arch_type.o
 stub-obj-y += bdrv-next-monitor-owned.o
+stub-obj-y += blk-by-qdev-id.o
 stub-obj-y += blk-commit-all.o
 stub-obj-y += blockdev-close-all-bdrv-states.o
 stub-obj-y += clock-warp.o
-- 
2.20.1