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block: Convert to new qapi union layout 

We have two issues with our qapi union layout:
1) Even though the QMP wire format spells the tag 'type', the
C code spells it 'kind', requiring some hacks in the generator.
2) The C struct uses an anonymous union, which places all tag
values in the same namespace as all non-variant members. This
leads to spurious collisions if a tag value matches a non-variant
member's name.

Make the conversion to the new layout for block-related code.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1445898903-12082-16-git-send-email-eblake@redhat.com>
[Commit message tweaked slightly]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Eric Blake 2015-10-26 16:34:54 -06:00 committed by Markus Armbruster
parent c363acef77
commit 6a8f9661dc
4 changed files with 40 additions and 41 deletions
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18
block/nbd.c
View File

@ -206,24 +206,24 @@ static SocketAddress *nbd_config(BDRVNBDState *s, QDict *options, char **export,
saddr = g_new0(SocketAddress, 1);
if (qdict_haskey(options, "path")) {
saddr->kind = SOCKET_ADDRESS_KIND_UNIX;
saddr->q_unix = g_new0(UnixSocketAddress, 1);
saddr->q_unix->path = g_strdup(qdict_get_str(options, "path"));
saddr->type = SOCKET_ADDRESS_KIND_UNIX;
saddr->u.q_unix = g_new0(UnixSocketAddress, 1);
saddr->u.q_unix->path = g_strdup(qdict_get_str(options, "path"));
qdict_del(options, "path");
} else {
saddr->kind = SOCKET_ADDRESS_KIND_INET;
saddr->inet = g_new0(InetSocketAddress, 1);
saddr->inet->host = g_strdup(qdict_get_str(options, "host"));
saddr->type = SOCKET_ADDRESS_KIND_INET;
saddr->u.inet = g_new0(InetSocketAddress, 1);
saddr->u.inet->host = g_strdup(qdict_get_str(options, "host"));
if (!qdict_get_try_str(options, "port")) {
saddr->inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT);
saddr->u.inet->port = g_strdup_printf("%d", NBD_DEFAULT_PORT);
} else {
saddr->inet->port = g_strdup(qdict_get_str(options, "port"));
saddr->u.inet->port = g_strdup(qdict_get_str(options, "port"));
}
qdict_del(options, "host");
qdict_del(options, "port");
}
s->client.is_unix = saddr->kind == SOCKET_ADDRESS_KIND_UNIX;
s->client.is_unix = saddr->type == SOCKET_ADDRESS_KIND_UNIX;
*export = g_strdup(qdict_get_try_str(options, "export"));
if (*export) {

10
block/qcow2.c
View File

@ -2738,18 +2738,16 @@ static ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *bs)
ImageInfoSpecific *spec_info = g_new(ImageInfoSpecific, 1);
*spec_info = (ImageInfoSpecific){
.kind = IMAGE_INFO_SPECIFIC_KIND_QCOW2,
{
.qcow2 = g_new(ImageInfoSpecificQCow2, 1),
},
.type = IMAGE_INFO_SPECIFIC_KIND_QCOW2,
.u.qcow2 = g_new(ImageInfoSpecificQCow2, 1),
};
if (s->qcow_version == 2) {
*spec_info->qcow2 = (ImageInfoSpecificQCow2){
*spec_info->u.qcow2 = (ImageInfoSpecificQCow2){
.compat = g_strdup("0.10"),
.refcount_bits = s->refcount_bits,
};
} else if (s->qcow_version == 3) {
*spec_info->qcow2 = (ImageInfoSpecificQCow2){
*spec_info->u.qcow2 = (ImageInfoSpecificQCow2){
.compat = g_strdup("1.1"),
.lazy_refcounts = s->compatible_features &
QCOW2_COMPAT_LAZY_REFCOUNTS,

6
block/vmdk.c
View File

@ -2161,19 +2161,19 @@ static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs)
ImageInfoList **next;
*spec_info = (ImageInfoSpecific){
.kind = IMAGE_INFO_SPECIFIC_KIND_VMDK,
.type = IMAGE_INFO_SPECIFIC_KIND_VMDK,
{
.vmdk = g_new0(ImageInfoSpecificVmdk, 1),
},
};
*spec_info->vmdk = (ImageInfoSpecificVmdk) {
*spec_info->u.vmdk = (ImageInfoSpecificVmdk) {
.create_type = g_strdup(s->create_type),
.cid = s->cid,
.parent_cid = s->parent_cid,
};
next = &spec_info->vmdk->extents;
next = &spec_info->u.vmdk->extents;
for (i = 0; i < s->num_extents; i++) {
*next = g_new0(ImageInfoList, 1);
(*next)->value = vmdk_get_extent_info(&s->extents[i]);

47
blockdev.c
View File

@ -1137,13 +1137,14 @@ void hmp_commit(Monitor *mon, const QDict *qdict)
}
}
static void blockdev_do_action(int kind, void *data, Error **errp)
static void blockdev_do_action(TransactionActionKind type, void *data,
Error **errp)
{
TransactionAction action;
TransactionActionList list;
action.kind = kind;
action.data = data;
action.type = type;
action.u.data = data;
list.value = &action;
list.next = NULL;
qmp_transaction(&list, errp);
@ -1388,9 +1389,9 @@ static void internal_snapshot_prepare(BlkTransactionState *common,
InternalSnapshotState *state;
int ret1;
g_assert(common->action->kind ==
g_assert(common->action->type ==
TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC);
internal = common->action->blockdev_snapshot_internal_sync;
internal = common->action->u.blockdev_snapshot_internal_sync;
state = DO_UPCAST(InternalSnapshotState, common, common);
/* 1. parse input */
@ -1536,22 +1537,22 @@ static void external_snapshot_prepare(BlkTransactionState *common,
TransactionAction *action = common->action;
/* get parameters */
g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC);
g_assert(action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC);
has_device = action->blockdev_snapshot_sync->has_device;
device = action->blockdev_snapshot_sync->device;
has_node_name = action->blockdev_snapshot_sync->has_node_name;
node_name = action->blockdev_snapshot_sync->node_name;
has_device = action->u.blockdev_snapshot_sync->has_device;
device = action->u.blockdev_snapshot_sync->device;
has_node_name = action->u.blockdev_snapshot_sync->has_node_name;
node_name = action->u.blockdev_snapshot_sync->node_name;
has_snapshot_node_name =
action->blockdev_snapshot_sync->has_snapshot_node_name;
snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name;
action->u.blockdev_snapshot_sync->has_snapshot_node_name;
snapshot_node_name = action->u.blockdev_snapshot_sync->snapshot_node_name;
new_image_file = action->blockdev_snapshot_sync->snapshot_file;
if (action->blockdev_snapshot_sync->has_format) {
format = action->blockdev_snapshot_sync->format;
new_image_file = action->u.blockdev_snapshot_sync->snapshot_file;
if (action->u.blockdev_snapshot_sync->has_format) {
format = action->u.blockdev_snapshot_sync->format;
}
if (action->blockdev_snapshot_sync->has_mode) {
mode = action->blockdev_snapshot_sync->mode;
if (action->u.blockdev_snapshot_sync->has_mode) {
mode = action->u.blockdev_snapshot_sync->mode;
}
/* start processing */
@ -1681,8 +1682,8 @@ static void drive_backup_prepare(BlkTransactionState *common, Error **errp)
DriveBackup *backup;
Error *local_err = NULL;
assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
backup = common->action->drive_backup;
assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
backup = common->action->u.drive_backup;
blk = blk_by_name(backup->device);
if (!blk) {
@ -1754,8 +1755,8 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp)
BlockBackend *blk, *target;
Error *local_err = NULL;
assert(common->action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP);
backup = common->action->blockdev_backup;
assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP);
backup = common->action->u.blockdev_backup;
blk = blk_by_name(backup->device);
if (!blk) {
@ -1887,9 +1888,9 @@ void qmp_transaction(TransactionActionList *dev_list, Error **errp)
dev_info = dev_entry->value;
dev_entry = dev_entry->next;
assert(dev_info->kind < ARRAY_SIZE(actions));
assert(dev_info->type < ARRAY_SIZE(actions));
ops = &actions[dev_info->kind];
ops = &actions[dev_info->type];
assert(ops->instance_size > 0);
state = g_malloc0(ops->instance_size);