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/*
* Block layer code related to image creation
*
* Copyright (c) 2018 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/osdep.h"
#include "block/block_int.h"
#include "qapi/qapi-commands-block-core.h"
#include "qapi/error.h"
typedef struct BlockdevCreateCo {
BlockDriver *drv;
BlockdevCreateOptions *opts;
int ret;
Error **errp;
} BlockdevCreateCo;
static void coroutine_fn bdrv_co_create_co_entry(void *opaque)
{
BlockdevCreateCo *cco = opaque;
cco->ret = cco->drv->bdrv_co_create(cco->opts, cco->errp);
}
void qmp_x_blockdev_create(BlockdevCreateOptions *options, Error **errp)
{
const char *fmt = BlockdevDriver_str(options->driver);
BlockDriver *drv = bdrv_find_format(fmt);
Coroutine *co;
BlockdevCreateCo cco;
/* If the driver is in the schema, we know that it exists. But it may not
* be whitelisted. */
assert(drv);
if (bdrv_uses_whitelist() && !bdrv_is_whitelisted(drv, false)) {
error_setg(errp, "Driver is not whitelisted");
return;
}
/* Call callback if it exists */
if (!drv->bdrv_co_create) {
error_setg(errp, "Driver does not support blockdev-create");
return;
}
cco = (BlockdevCreateCo) {
.drv = drv,
.opts = options,
.ret = -EINPROGRESS,
.errp = errp,
};
co = qemu_coroutine_create(bdrv_co_create_co_entry, &cco);
qemu_coroutine_enter(co);
while (cco.ret == -EINPROGRESS) {
aio_poll(qemu_get_aio_context(), true);
}
}
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