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From 94b5efa066c1d0a05e62d9435e203afa431f8909 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Thu, 10 Jan 2019 12:44:37 +0000
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Subject: [PATCH 07/14] curl: Support auto-read-only option
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20190110124442.30132-8-kwolf@redhat.com>
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Patchwork-id: 83956
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O-Subject: [RHEL-8.0 qemu-kvm PATCH 07/12] curl: Support auto-read-only option
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Bugzilla: 1644996
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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RH-Acked-by: Eric Blake <eblake@redhat.com>
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If read-only=off, but auto-read-only=on is given, just degrade to
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read-only.
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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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(cherry picked from commit 6ceef36acb11819b255732b1de0ca62885da04bd)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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block/curl.c | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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diff --git a/block/curl.c b/block/curl.c
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index 4d28f77..f0df33a 100644
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--- a/block/curl.c
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+++ b/block/curl.c
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@@ -684,10 +684,10 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags,
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const char *protocol_delimiter;
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int ret;
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-
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- if (flags & BDRV_O_RDWR) {
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- error_setg(errp, "curl block device does not support writes");
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- return -EROFS;
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+ ret = bdrv_apply_auto_read_only(bs, "curl driver does not support writes",
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+ errp);
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+ if (ret < 0) {
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+ return ret;
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}
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if (!libcurl_initialized) {
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--
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1.8.3.1
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