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nbd/server: Allow LIST_META_CONTEXT without STRUCTURED_REPLY

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The NBD protocol just relaxed the requirements on
NBD_OPT_LIST_META_CONTEXT:

13a4e33a87

Since listing is not stateful (unlike SET_META_CONTEXT), we don't care
if a client asks for meta contexts without first requesting structured
replies.  Well-behaved clients will still ask for structured reply
first (if for no other reason than for back-compat to older servers),
but that's no reason to avoid this change.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210907173505.1499709-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
This commit is contained in:
Eric Blake 2021-09-07 12:35:05 -05:00
parent 6a8f3dbb19
commit da24597dd3
1 changed files with 1 additions and 1 deletions
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2
nbd/server.c
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@ -980,7 +980,7 @@ static int nbd_negotiate_meta_queries(NBDClient *client,
size_t i;
size_t count = 0;
if (!client->structured_reply) {
if (client->opt == NBD_OPT_SET_META_CONTEXT && !client->structured_reply) {
return nbd_opt_invalid(client, errp,
"request option '%s' when structured reply "
"is not negotiated",