nbd: Utilize QAPI_CLONE for type conversion
commit8675cbd68be7da35a61e391fbb5b95ac67bc7d72
authorEric Blake <eblake@redhat.com>
Tue, 27 Oct 2020 05:05:48 +0000 (27 00:05 -0500)
committerEric Blake <eblake@redhat.com>
Fri, 30 Oct 2020 20:10:14 +0000 (30 15:10 -0500)
treec8fc80567dd259be7c07a4b7379808fd42077f16
parent9812e7125b83ba6e4645237150ca5f61bf66197f
nbd: Utilize QAPI_CLONE for type conversion

Rather than open-coding the translation from the deprecated
NbdServerAddOptions type to the preferred BlockExportOptionsNbd, it's
better to utilize QAPI_CLONE_MEMBERS.  This solves a couple of issues:
first, if we do any more refactoring of the base type (which an
upcoming patch plans to do), we don't have to revisit the open-coding.
Second, our assignment to arg->name is fishy: the generated QAPI code
for qapi_free_NbdServerAddOptions does not visit arg->name if
arg->has_name is false, but if it DID visit it, we would have
introduced a double-free situation when arg is finally freed.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201027050556.269064-4-eblake@redhat.com>
blockdev-nbd.c