mirror of
https://gitlab.com/qemu-project/qemu
synced 2024-09-06 18:05:37 +00:00
![Vladimir Sementsov-Ogievskiy](/assets/img/avatar_default.png)
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Hanna Reitz <hreitz@redhat.com> Message-Id: <20210824083856.17408-18-vsementsov@virtuozzo.com> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/*
|
|
* copy-before-write filter driver
|
|
*
|
|
* The driver performs Copy-Before-Write (CBW) operation: it is injected above
|
|
* some node, and before each write it copies _old_ data to the target node.
|
|
*
|
|
* Copyright (c) 2018-2021 Virtuozzo International GmbH.
|
|
*
|
|
* Author:
|
|
* Sementsov-Ogievskiy Vladimir <vsementsov@virtuozzo.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef COPY_BEFORE_WRITE_H
|
|
#define COPY_BEFORE_WRITE_H
|
|
|
|
#include "block/block_int.h"
|
|
#include "block/block-copy.h"
|
|
|
|
BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
|
|
BlockDriverState *target,
|
|
const char *filter_node_name,
|
|
BlockCopyState **bcs,
|
|
Error **errp);
|
|
void bdrv_cbw_drop(BlockDriverState *bs);
|
|
|
|
#endif /* COPY_BEFORE_WRITE_H */
|