block: Add bdrv_next_monitor_owned()
Add a function for iterating over all monitor-owned BlockDriverStates so
the generic block layer can do so.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/blockdev.c b/blockdev.c
index b6d2444..a5df7e7 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -723,6 +723,13 @@
}
}
+/* Iterates over the list of monitor-owned BlockDriverStates */
+BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs)
+{
+ return bs ? QTAILQ_NEXT(bs, monitor_list)
+ : QTAILQ_FIRST(&monitor_bdrv_states);
+}
+
static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to,
Error **errp)
{
