| /* |
| * 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 "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 BlockdevCreateJob { |
| Job common; |
| BlockDriver *drv; |
| BlockdevCreateOptions *opts; |
| } BlockdevCreateJob; |
| |
| static int coroutine_fn blockdev_create_run(Job *job, Error **errp) |
| { |
| BlockdevCreateJob *s = container_of(job, BlockdevCreateJob, common); |
| int ret; |
| |
| job_progress_set_remaining(&s->common, 1); |
| ret = s->drv->bdrv_co_create(s->opts, errp); |
| job_progress_update(&s->common, 1); |
| |
| qapi_free_BlockdevCreateOptions(s->opts); |
| |
| return ret; |
| } |
| |
| static const JobDriver blockdev_create_job_driver = { |
| .instance_size = sizeof(BlockdevCreateJob), |
| .job_type = JOB_TYPE_CREATE, |
| .run = blockdev_create_run, |
| }; |
| |
| void qmp_blockdev_create(const char *job_id, BlockdevCreateOptions *options, |
| Error **errp) |
| { |
| BlockdevCreateJob *s; |
| const char *fmt = BlockdevDriver_str(options->driver); |
| BlockDriver *drv = bdrv_find_format(fmt); |
| |
| /* 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; |
| } |
| |
| /* Error out if the driver doesn't support .bdrv_co_create */ |
| if (!drv->bdrv_co_create) { |
| error_setg(errp, "Driver does not support blockdev-create"); |
| return; |
| } |
| |
| /* Create the block job */ |
| /* TODO Running in the main context. Block drivers need to error out or add |
| * locking when they use a BDS in a different AioContext. */ |
| s = job_create(job_id, &blockdev_create_job_driver, NULL, |
| qemu_get_aio_context(), JOB_DEFAULT | JOB_MANUAL_DISMISS, |
| NULL, NULL, errp); |
| if (!s) { |
| return; |
| } |
| |
| s->drv = drv, |
| s->opts = QAPI_CLONE(BlockdevCreateOptions, options), |
| |
| job_start(&s->common); |
| } |