This function skips to the next BlockBackend for which blk_is_inserted()
is true.
Signed-off-by: Max Reitz <mre...@redhat.com>
Reviewed-by: Eric Blake <ebl...@redhat.com>
---
block/block-backend.c | 15 +++++++++++++++
include/sysemu/block-backend.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/block/block-backend.c b/block/block-backend.c
index c54792d..5505bb8 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -235,6 +235,21 @@ BlockBackend *blk_next(BlockBackend *blk)
}
/*
+ * Like blk_next(), but skips all non-inserted BlockBackends (that is,
+ * BlockBackends for which blk_is_inserted() returns false)
+ */
+BlockBackend *blk_next_inserted(BlockBackend *blk)
+{
+ while ((blk = blk_next(blk)) != NULL) {
+ if (blk_is_inserted(blk)) {
+ break;
+ }
+ }
+
+ return blk;
+}
+
+/*
* Return @blk's name, a non-null string.
* Wart: the name is empty iff @blk has been hidden with
* blk_hide_on_behalf_of_do_drive_del().
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 3790c9b..1772db7 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -74,6 +74,7 @@ const char *blk_name(BlockBackend *blk);
BlockBackend *blk_by_name(const char *name);
bool blk_name_taken(const char *name);
BlockBackend *blk_next(BlockBackend *blk);
+BlockBackend *blk_next_inserted(BlockBackend *blk);
BlockDriverState *blk_bs(BlockBackend *blk);
void blk_remove_bs(BlockBackend *blk);
--
2.1.0
