nbd/server: fix nbd_co_send_block_status

Call nbd_co_send_extents() with correct length parameter
(extent.length may be smaller than original length).

Also, switch length parameter type to uint32_t, to correspond with
request->len and similar nbd_co_send_bitmap().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20180704112302.471456-2-vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>

diff --git a/nbd/server.c b/nbd/server.c
index e52b76bd1a4a7a344154c36c1585f10d406ea967..ea5fe0eb336f30e35c1d1b91b0510ab6972e72ca 100644 (file)
--- a/nbd/server.c
+++ b/nbd/server.c
@@ -1910,7 +1910,7 @@ static int nbd_co_send_extents(NBDClient *client, uint64_t handle,
 /* Get block status from the exported device and send it to the client */
 static int nbd_co_send_block_status(NBDClient *client, uint64_t handle,
                                     BlockDriverState *bs, uint64_t offset,
-                                    uint64_t length, bool last,
+                                    uint32_t length, bool last,
                                     uint32_t context_id, Error **errp)
 {
     int ret;
@@ -1922,7 +1922,8 @@ static int nbd_co_send_block_status(NBDClient *client, uint64_t handle,
                 client, handle, -ret, "can't get block status", errp);
     }
 
-    return nbd_co_send_extents(client, handle, &extent, 1, length, last,
+    return nbd_co_send_extents(client, handle, &extent, 1,
+                               be32_to_cpu(extent.length), last,
                                context_id, errp);
 }