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/*
* Block protocol for I/O error injection
*
* Copyright (c) 2010 Kevin Wolf <kwolf@redhat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu-common.h"
#include "block_int.h"
#include "module.h"
typedef struct BDRVBlkdebugState {
BlockDriverState *hd;
} BDRVBlkdebugState;
static int blkdebug_open(BlockDriverState *bs, const char *filename, int flags)
{
BDRVBlkdebugState *s = bs->opaque;
if (strncmp(filename, "blkdebug:", strlen("blkdebug:"))) {
return -EINVAL;
}
filename += strlen("blkdebug:");
return bdrv_file_open(&s->hd, filename, flags);
}
static BlockDriverAIOCB *blkdebug_aio_readv(BlockDriverState *bs,
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
BlockDriverCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
BlockDriverAIOCB *acb =
bdrv_aio_readv(s->hd, sector_num, qiov, nb_sectors, cb, opaque);
return acb;
}
static BlockDriverAIOCB *blkdebug_aio_writev(BlockDriverState *bs,
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
BlockDriverCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
BlockDriverAIOCB *acb =
bdrv_aio_writev(s->hd, sector_num, qiov, nb_sectors, cb, opaque);
return acb;
}
static void blkdebug_close(BlockDriverState *bs)
{
BDRVBlkdebugState *s = bs->opaque;
bdrv_delete(s->hd);
}
static void blkdebug_flush(BlockDriverState *bs)
{
BDRVBlkdebugState *s = bs->opaque;
bdrv_flush(s->hd);
}
static BlockDriverAIOCB *blkdebug_aio_flush(BlockDriverState *bs,
BlockDriverCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
return bdrv_aio_flush(s->hd, cb, opaque);
}
static BlockDriver bdrv_blkdebug = {
.format_name = "blkdebug",
.protocol_name = "blkdebug",
.instance_size = sizeof(BDRVBlkdebugState),
.bdrv_open = blkdebug_open,
.bdrv_close = blkdebug_close,
.bdrv_flush = blkdebug_flush,
.bdrv_aio_readv = blkdebug_aio_readv,
.bdrv_aio_writev = blkdebug_aio_writev,
.bdrv_aio_flush = blkdebug_aio_flush,
};
static void bdrv_blkdebug_init(void)
{
bdrv_register(&bdrv_blkdebug);
}
block_init(bdrv_blkdebug_init);
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