blockjob: Add permissions to block_job_add_bdrv()

Block jobs don't actually do I/O through the the reference they create
with block_job_add_bdrv(), but they might want to use the permisssion
system to express what the block job does to intermediate nodes. This
adds permissions to block_job_add_bdrv() to provide the means to request
permissions.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Acked-by: Fam Zheng <famz@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/block/stream.c b/block/stream.c
index 7f49279b38..ba8650f0a4 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -248,7 +248,9 @@ void stream_start(const char *job_id, BlockDriverState *bs,
     /* Block all intermediate nodes between bs and base, because they
      * will disappear from the chain after this operation */
     for (iter = backing_bs(bs); iter && iter != base; iter = backing_bs(iter)) {
-        block_job_add_bdrv(&s->common, iter);
+        /* FIXME Use real permissions */
+        block_job_add_bdrv(&s->common, "intermediate node", iter, 0,
+                           BLK_PERM_ALL, &error_abort);
     }
 
     s->base = base;