commit 1c89e1fa2fb1414f4485a01924032ad9cdb9073d
author Kevin Wolf <kwolf@redhat.com> Tue Sep 20 13:38:40 2016 +0200
committer Kevin Wolf <kwolf@redhat.com> Fri Sep 23 13:36:10 2016 +0200
tree 881fd516e4ec8e932fc74613c02ead9da8c6a5c8
parent 6bed02805666035a59daa6a46935074f6f6d507d

block: Add blk_by_dev()

This finds a BlockBackend given the device model that is attached to it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>

include/sysemu/block-backend.h

diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index 4808a96..410eb68 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -111,6 +111,7 @@
 void blk_attach_dev_nofail(BlockBackend *blk, void *dev);
 void blk_detach_dev(BlockBackend *blk, void *dev);
 void *blk_get_attached_dev(BlockBackend *blk);
+BlockBackend *blk_by_dev(void *dev);
 void blk_set_dev_ops(BlockBackend *blk, const BlockDevOps *ops, void *opaque);
 int blk_pread_unthrottled(BlockBackend *blk, int64_t offset, uint8_t *buf,
                           int count);