The code is moved into preparation function, and is changed
a bit to tip more clearly what it is doing.
Signed-off-by: Wenchao Xia <xiaw...@linux.vnet.ibm.com>
---
blockdev.c | 38 +++++++++++++++++++-------------------
1 files changed, 19 insertions(+), 19 deletions(-)
diff --git a/blockdev.c b/blockdev.c
index e01906c..8d1faf8 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -785,10 +785,7 @@ typedef struct BlkTransactionStates {
QSIMPLEQ_ENTRY(BlkTransactionStates) entry;
} BlkTransactionStates;
-static int external_snapshot_prepare(const char *device,
- const char *format,
- const char *new_image_file,
- enum NewImageMode mode,
+static int external_snapshot_prepare(BlockdevAction *action,
BlkTransactionStates *states,
Error **errp)
{
@@ -796,7 +793,24 @@ static int external_snapshot_prepare(const char *device,
BlockDriver *drv;
int flags, ret;
Error *local_err = NULL;
+ const char *device;
+ const char *new_image_file;
+ const char *format = "qcow2";
+ enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
+ /* get parameters */
+ g_assert(action->kind == BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC);
+
+ device = action->blockdev_snapshot_sync->device;
+ new_image_file = action->blockdev_snapshot_sync->snapshot_file;
+ if (action->blockdev_snapshot_sync->has_format) {
+ format = action->blockdev_snapshot_sync->format;
+ }
+ if (action->blockdev_snapshot_sync->has_mode) {
+ mode = action->blockdev_snapshot_sync->mode;
+ }
+
+ /* start processing */
drv = bdrv_find_format(format);
if (!drv) {
error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
@@ -882,10 +896,6 @@ void qmp_transaction(BlockdevActionList *dev_list, Error
**errp)
/* We don't do anything in this loop that commits us to the snapshot */
while (NULL != dev_entry) {
BlockdevAction *dev_info = NULL;
- enum NewImageMode mode;
- const char *new_image_file;
- const char *device;
- const char *format = "qcow2";
dev_info = dev_entry->value;
dev_entry = dev_entry->next;
@@ -895,17 +905,7 @@ void qmp_transaction(BlockdevActionList *dev_list, Error
**errp)
switch (dev_info->kind) {
case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC:
- device = dev_info->blockdev_snapshot_sync->device;
- if (!dev_info->blockdev_snapshot_sync->has_mode) {
- dev_info->blockdev_snapshot_sync->mode =
NEW_IMAGE_MODE_ABSOLUTE_PATHS;
- }
- new_image_file = dev_info->blockdev_snapshot_sync->snapshot_file;
- if (dev_info->blockdev_snapshot_sync->has_format) {
- format = dev_info->blockdev_snapshot_sync->format;
- }
- mode = dev_info->blockdev_snapshot_sync->mode;
- if (external_snapshot_prepare(device, format, new_image_file,
- mode, states, errp)) {
+ if (external_snapshot_prepare(dev_info, states, errp)) {
goto delete_and_fail;
}
break;
--
1.7.1
