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authorMax Reitz <mreitz@redhat.com>2019-02-01 20:29:20 +0100
committerMax Reitz <mreitz@redhat.com>2019-02-25 15:11:26 +0100
commitf3037bd2549f8cf6d4ab7dddcfda07e3d5bc48fb (patch)
tree238aa17cbfbb0766d123fc49252f457bb9340a78 /block/quorum.c
parent27953572a51f44de6cc1987300fab5d56e338ba0 (diff)
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quorum: Make bdrv_dirname() return NULL
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 <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-id: 20190201192935.18394-17-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'block/quorum.c')
-rw-r--r--block/quorum.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/block/quorum.c b/block/quorum.c
index cf9d7c1..a890f21 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -1094,6 +1094,16 @@ static void quorum_refresh_filename(BlockDriverState *bs, QDict *options)
bs->full_open_options = opts;
}
+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 are equal
+ * by chance, or there is only one). Therefore, to be consistent, just
+ * always return NULL. */
+ error_setg(errp, "Cannot generate a base directory for quorum nodes");
+ return NULL;
+}
+
static BlockDriver bdrv_quorum = {
.format_name = "quorum",
@@ -1102,6 +1112,7 @@ static BlockDriver bdrv_quorum = {
.bdrv_open = quorum_open,
.bdrv_close = quorum_close,
.bdrv_refresh_filename = quorum_refresh_filename,
+ .bdrv_dirname = quorum_dirname,
.bdrv_co_flush_to_disk = quorum_co_flush,