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 QMP name.
Make the conversion to the new layout for block-related code. Signed-off-by: Eric Blake <ebl...@redhat.com> --- v10: no change v9: new patch, but incorporates parts of v5 31/46 and Markus' RFC: http://lists.gnu.org/archive/html/qemu-devel/2015-10/msg02236.html --- block/nbd.c | 18 +++++++++--------- block/qcow2.c | 10 ++++------ block/vmdk.c | 6 +++--- blockdev.c | 47 ++++++++++++++++++++++++----------------------- 4 files changed, 40 insertions(+), 41 deletions(-) diff --git a/block/nbd.c b/block/nbd.c index c2a87e9..cd6a587 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -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) { diff --git a/block/qcow2.c b/block/qcow2.c index bacc4f2..88f56c8 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -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, diff --git a/block/vmdk.c b/block/vmdk.c index 0effb7d..6f819e4 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -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]); diff --git a/blockdev.c b/blockdev.c index 8141b6b..0bcd3f1 100644 --- a/blockdev.c +++ b/blockdev.c @@ -1050,13 +1050,14 @@ 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); @@ -1295,9 +1296,9 @@ 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 */ @@ -1437,22 +1438,22 @@ 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 */ @@ -1577,8 +1578,8 @@ 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) { @@ -1645,8 +1646,8 @@ static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp) BlockBackend *blk; 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) { @@ -1772,9 +1773,9 @@ 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); -- 2.4.3
