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/*
* Block layer code related to image options amend
*
* Copyright (c) 2018 Kevin Wolf <kwolf@redhat.com>
* Copyright (c) 2020 Red Hat. Inc
*
* Heavily based on create.c
*
* 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 "qemu/job.h"
#include "qemu/main-loop.h"
#include "qapi/qapi-commands-block-core.h"
#include "qapi/qapi-visit-block-core.h"
#include "qapi/clone-visitor.h"
#include "qapi/error.h"
typedef struct BlockdevAmendJob {
Job common;
BlockdevAmendOptions *opts;
BlockDriverState *bs;
bool force;
} BlockdevAmendJob;
static int coroutine_fn blockdev_amend_run(Job *job, Error **errp)
{
BlockdevAmendJob *s = container_of(job, BlockdevAmendJob, common);
int ret;
job_progress_set_remaining(&s->common, 1);
ret = s->bs->drv->bdrv_co_amend(s->bs, s->opts, s->force, errp);
job_progress_update(&s->common, 1);
qapi_free_BlockdevAmendOptions(s->opts);
return ret;
}
static const JobDriver blockdev_amend_job_driver = {
.instance_size = sizeof(BlockdevAmendJob),
.job_type = JOB_TYPE_AMEND,
.run = blockdev_amend_run,
};
void qmp_x_blockdev_amend(const char *job_id,
const char *node_name,
BlockdevAmendOptions *options,
bool has_force,
bool force,
Error **errp)
{
BlockdevAmendJob *s;
const char *fmt = BlockdevDriver_str(options->driver);
BlockDriver *drv = bdrv_find_format(fmt);
BlockDriverState *bs = bdrv_find_node(node_name);
if (!drv) {
error_setg(errp, "Block driver '%s' not found or not supported", fmt);
return;
}
/*
* If the driver is in the schema, we know that it exists. But it may not
* be whitelisted.
*/
if (bdrv_uses_whitelist() && !bdrv_is_whitelisted(drv, false)) {
error_setg(errp, "Driver is not whitelisted");
return;
}
if (bs->drv != drv) {
error_setg(errp,
"x-blockdev-amend doesn't support changing the block driver");
return;
}
/* Error out if the driver doesn't support .bdrv_co_amend */
if (!drv->bdrv_co_amend) {
error_setg(errp, "Driver does not support x-blockdev-amend");
return;
}
/* Create the block job */
s = job_create(job_id, &blockdev_amend_job_driver, NULL,
bdrv_get_aio_context(bs), JOB_DEFAULT | JOB_MANUAL_DISMISS,
NULL, NULL, errp);
if (!s) {
return;
}
s->bs = bs,
s->opts = QAPI_CLONE(BlockdevAmendOptions, options),
s->force = has_force ? force : false;
job_start(&s->common);
}
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