From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33714) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZ1cq-0007J0-7x for qemu-devel@nongnu.org; Mon, 17 Dec 2018 17:44:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gZ1cp-0006LY-AB for qemu-devel@nongnu.org; Mon, 17 Dec 2018 17:44:36 -0500 From: Max Reitz Date: Mon, 17 Dec 2018 23:43:33 +0100 Message-Id: <20181217224348.14922-17-mreitz@redhat.com> In-Reply-To: <20181217224348.14922-1-mreitz@redhat.com> References: <20181217224348.14922-1-mreitz@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH v12 16/31] quorum: Make bdrv_dirname() return NULL List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Max Reitz , Kevin Wolf , Alberto Garcia , Eric Blake While the common implementation for bdrv_dirname() should return NULL for quorum BDSs already (because they do not have a file node and their exact_filename field should be empty), there is no reason not to make that explicit. Signed-off-by: Max Reitz Reviewed-by: Eric Blake Reviewed-by: Alberto Garcia --- block/quorum.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index cf9d7c16c2..a890f21e85 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -1094,6 +1094,16 @@ static void quorum_refresh_filename(BlockDriverSta= te *bs, QDict *options) bs->full_open_options =3D opts; } =20 +static char *quorum_dirname(BlockDriverState *bs, Error **errp) +{ + /* In general, there are multiple BDSs with different dirnames below= this + * one; so there is no unique dirname we could return (unless all ar= e equal + * by chance, or there is only one). Therefore, to be consistent, ju= st + * always return NULL. */ + error_setg(errp, "Cannot generate a base directory for quorum nodes"= ); + return NULL; +} + static BlockDriver bdrv_quorum =3D { .format_name =3D "quorum", =20 @@ -1102,6 +1112,7 @@ static BlockDriver bdrv_quorum =3D { .bdrv_open =3D quorum_open, .bdrv_close =3D quorum_close, .bdrv_refresh_filename =3D quorum_refresh_filename, + .bdrv_dirname =3D quorum_dirname, =20 .bdrv_co_flush_to_disk =3D quorum_co_flush, =20 --=20 2.19.2