From 621d17378a40509757d5e03eb1c2f5305ff76df3 Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Mon, 20 Sep 2021 14:55:34 +0300 Subject: [PATCH] block: implement bdrv_new_open_driver_opts() Add version of bdrv_new_open_driver() that supports QDict options. We'll use it in further commit. Simply add one more argument to bdrv_new_open_driver() is worse, as there are too many invocations of bdrv_new_open_driver() to update then. Signed-off-by: Vladimir Sementsov-Ogievskiy Suggested-by: Kevin Wolf Message-Id: <20210920115538.264372-2-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf --- block.c | 25 +++++++++++++++++++++---- include/block/block.h | 4 ++++ 2 files changed, 25 insertions(+), 4 deletions(-) diff --git a/block.c b/block.c index 5ce08a79fd..917fb7faca 100644 --- a/block.c +++ b/block.c @@ -1604,16 +1604,26 @@ open_failed: return ret; } -BlockDriverState *bdrv_new_open_driver(BlockDriver *drv, const char *node_name, - int flags, Error **errp) +/* + * Create and open a block node. + * + * @options is a QDict of options to pass to the block drivers, or NULL for an + * empty set of options. The reference to the QDict belongs to the block layer + * after the call (even on failure), so if the caller intends to reuse the + * dictionary, it needs to use qobject_ref() before calling bdrv_open. + */ +BlockDriverState *bdrv_new_open_driver_opts(BlockDriver *drv, + const char *node_name, + QDict *options, int flags, + Error **errp) { BlockDriverState *bs; int ret; bs = bdrv_new(); bs->open_flags = flags; - bs->explicit_options = qdict_new(); - bs->options = qdict_new(); + bs->options = options ?: qdict_new(); + bs->explicit_options = qdict_clone_shallow(bs->options); bs->opaque = NULL; update_options_from_flags(bs->options, flags); @@ -1631,6 +1641,13 @@ BlockDriverState *bdrv_new_open_driver(BlockDriver *drv, const char *node_name, return bs; } +/* Create and open a block node. */ +BlockDriverState *bdrv_new_open_driver(BlockDriver *drv, const char *node_name, + int flags, Error **errp) +{ + return bdrv_new_open_driver_opts(drv, node_name, NULL, flags, errp); +} + QemuOptsList bdrv_runtime_opts = { .name = "bdrv_common", .head = QTAILQ_HEAD_INITIALIZER(bdrv_runtime_opts.head), diff --git a/include/block/block.h b/include/block/block.h index ab987e8a99..e5dd22b034 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -383,6 +383,10 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options, const char *bdref_key, Error **errp); BlockDriverState *bdrv_open(const char *filename, const char *reference, QDict *options, int flags, Error **errp); +BlockDriverState *bdrv_new_open_driver_opts(BlockDriver *drv, + const char *node_name, + QDict *options, int flags, + Error **errp); BlockDriverState *bdrv_new_open_driver(BlockDriver *drv, const char *node_name, int flags, Error **errp); BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,