From: Kevin Wolf <kwolf@redhat.com>
Date: Tue, 9 Oct 2018 14:57:12 +0000 (+0200)
Subject: block: Update flags in bdrv_set_read_only()
X-Git-Tag: v3.1.0-rc0~8^2~17
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=eeae6a596b0efc092f5101c67683053e245e6250;p=thirdparty%2Fqemu.git

block: Update flags in bdrv_set_read_only()

To fully change the read-only state of a node, we must not only change
bs->read_only, but also update bs->open_flags.

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

diff --git a/block.c b/block.c
index 9d2adf79623..3132c78f010 100644
--- a/block.c
+++ b/block.c
@@ -281,6 +281,13 @@ int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp)
     }
 
     bs->read_only = read_only;
+
+    if (read_only) {
+        bs->open_flags &= ~BDRV_O_RDWR;
+    } else {
+        bs->open_flags |= BDRV_O_RDWR;
+    }
+
     return 0;
 }