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From 0e48a34df1ebd61f5fd0e914d638de2646b09635 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Fri, 23 Nov 2018 10:41:43 +0100
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Subject: [PATCH 02/34] block: Update flags in bdrv_set_read_only()
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20181123104154.13541-2-kwolf@redhat.com>
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Patchwork-id: 83110
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O-Subject: [RHEL-7.7/7.6.z qemu-kvm-rhev PATCH v2 01/12] block: Update flags in bdrv_set_read_only()
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Bugzilla: 1623986
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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To fully change the read-only state of a node, we must not only change
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bs->read_only, but also update bs->open_flags.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Reviewed-by: Alberto Garcia <berto@igalia.com>
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(cherry picked from commit eeae6a596b0efc092f5101c67683053e245e6250)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/block.c b/block.c
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index fbd569c..d3ea21a 100644
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--- a/block.c
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+++ b/block.c
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@@ -281,6 +281,13 @@ int bdrv_set_read_only(BlockDriverState *bs, bool read_only, Error **errp)
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}
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bs->read_only = read_only;
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+
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+ if (read_only) {
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+ bs->open_flags &= ~BDRV_O_RDWR;
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+ } else {
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+ bs->open_flags |= BDRV_O_RDWR;
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+ }
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+
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return 0;
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}
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--
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1.8.3.1
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