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authorKevin Wolf <kwolf@redhat.com>2015-01-21 18:49:28 +0100
committerKevin Wolf <kwolf@redhat.com>2015-06-12 16:58:07 +0200
commitea6828d81b34d42f407e8de28694d2751ee660a2 (patch)
treeb49c68fb60334348bed1cc38b4cef760626f9b0a /block/quorum.c
parentef1919df26b9b094aa41733466b134111fcdbd36 (diff)
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quorum: Use bdrv_open_image()
Besides standardising on a single interface for opening child nodes, this simplifies the .bdrv_open() implementation of the quorum block driver by using block layer functionality for handling BlockdevRefs. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Jeff Cody <jcody@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com>
Diffstat (limited to 'block/quorum.c')
-rw-r--r--block/quorum.c51
1 files changed, 11 insertions, 40 deletions
diff --git a/block/quorum.c b/block/quorum.c
index f91ef75..a33881a 100644
--- a/block/quorum.c
+++ b/block/quorum.c
@@ -866,25 +866,18 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
Error *local_err = NULL;
QemuOpts *opts = NULL;
bool *opened;
- QDict *sub = NULL;
- QList *list = NULL;
- const QListEntry *lentry;
int i;
int ret = 0;
qdict_flatten(options);
- qdict_extract_subqdict(options, &sub, "children.");
- qdict_array_split(sub, &list);
- if (qdict_size(sub)) {
- error_setg(&local_err, "Invalid option children.%s",
- qdict_first(sub)->key);
+ /* count how many different children are present */
+ s->num_children = qdict_array_entries(options, "children.");
+ if (s->num_children < 0) {
+ error_setg(&local_err, "Option children is not a valid array");
ret = -EINVAL;
goto exit;
}
-
- /* count how many different children are present */
- s->num_children = qlist_size(list);
if (s->num_children < 2) {
error_setg(&local_err,
"Number of provided children must be greater than 1");
@@ -937,37 +930,17 @@ static int quorum_open(BlockDriverState *bs, QDict *options, int flags,
s->bs = g_new0(BlockDriverState *, s->num_children);
opened = g_new0(bool, s->num_children);
- for (i = 0, lentry = qlist_first(list); lentry;
- lentry = qlist_next(lentry), i++) {
- QDict *d;
- QString *string;
-
- switch (qobject_type(lentry->value))
- {
- /* List of options */
- case QTYPE_QDICT:
- d = qobject_to_qdict(lentry->value);
- QINCREF(d);
- ret = bdrv_open(&s->bs[i], NULL, NULL, d, flags, NULL,
- &local_err);
- break;
-
- /* QMP reference */
- case QTYPE_QSTRING:
- string = qobject_to_qstring(lentry->value);
- ret = bdrv_open(&s->bs[i], NULL, qstring_get_str(string), NULL,
- flags, NULL, &local_err);
- break;
-
- default:
- error_setg(&local_err, "Specification of child block device %i "
- "is invalid", i);
- ret = -EINVAL;
- }
+ for (i = 0; i < s->num_children; i++) {
+ char indexstr[32];
+ ret = snprintf(indexstr, 32, "children.%d", i);
+ assert(ret < 32);
+ ret = bdrv_open_image(&s->bs[i], NULL, options, indexstr, flags,
+ false, &local_err);
if (ret < 0) {
goto close_exit;
}
+
opened[i] = true;
}
@@ -990,8 +963,6 @@ exit:
if (local_err) {
error_propagate(errp, local_err);
}
- QDECREF(list);
- QDECREF(sub);
return ret;
}