diff options
| -rw-r--r-- | block/vdi.c | 91 | ||||
| -rw-r--r-- | qapi/block-core.json | 18 |
2 files changed, 95 insertions, 14 deletions
diff --git a/block/vdi.c b/block/vdi.c index 2b5ddd0666..0c8f8204ce 100644 --- a/block/vdi.c +++ b/block/vdi.c @@ -51,6 +51,9 @@ #include "qemu/osdep.h" #include "qapi/error.h" +#include "qapi/qmp/qdict.h" +#include "qapi/qobject-input-visitor.h" +#include "qapi/qapi-visit-block-core.h" #include "block/block_int.h" #include "sysemu/block-backend.h" #include "qemu/module.h" @@ -140,6 +143,8 @@ #define VDI_DISK_SIZE_MAX ((uint64_t)VDI_BLOCKS_IN_IMAGE_MAX * \ (uint64_t)DEFAULT_CLUSTER_SIZE) +static QemuOptsList vdi_create_opts; + typedef struct { char text[0x40]; uint32_t signature; @@ -716,13 +721,14 @@ nonallocating_write: return ret; } -static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts, - Error **errp) +static int coroutine_fn vdi_co_do_create(const char *filename, + QemuOpts *file_opts, + BlockdevCreateOptionsVdi *vdi_opts, + size_t block_size, Error **errp) { int ret = 0; uint64_t bytes = 0; uint32_t blocks; - size_t block_size = DEFAULT_CLUSTER_SIZE; uint32_t image_type = VDI_TYPE_DYNAMIC; VdiHeader header; size_t i; @@ -735,18 +741,25 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts, logout("\n"); /* Read out options. */ - bytes = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), - BDRV_SECTOR_SIZE); -#if defined(CONFIG_VDI_BLOCK_SIZE) - /* TODO: Additional checks (SECTOR_SIZE * 2^n, ...). */ - block_size = qemu_opt_get_size_del(opts, - BLOCK_OPT_CLUSTER_SIZE, - DEFAULT_CLUSTER_SIZE); -#endif -#if defined(CONFIG_VDI_STATIC_IMAGE) - if (qemu_opt_get_bool_del(opts, BLOCK_OPT_STATIC, false)) { + bytes = vdi_opts->size; + if (vdi_opts->q_static) { image_type = VDI_TYPE_STATIC; } +#ifndef CONFIG_VDI_STATIC_IMAGE + if (image_type == VDI_TYPE_STATIC) { + ret = -ENOTSUP; + error_setg(errp, "Statically allocated images cannot be created in " + "this build"); + goto exit; + } +#endif +#ifndef CONFIG_VDI_BLOCK_SIZE + if (block_size != DEFAULT_CLUSTER_SIZE) { + ret = -ENOTSUP; + error_setg(errp, + "A non-default cluster size is not supported in this build"); + goto exit; + } #endif if (bytes > VDI_DISK_SIZE_MAX) { @@ -757,7 +770,7 @@ static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts, goto exit; } - ret = bdrv_create_file(filename, opts, &local_err); + ret = bdrv_create_file(filename, file_opts, &local_err); if (ret < 0) { error_propagate(errp, local_err); goto exit; @@ -847,6 +860,56 @@ exit: return ret; } +static int coroutine_fn vdi_co_create_opts(const char *filename, QemuOpts *opts, + Error **errp) +{ + QDict *qdict = NULL; + BlockdevCreateOptionsVdi *create_options = NULL; + uint64_t block_size = DEFAULT_CLUSTER_SIZE; + Visitor *v; + Error *local_err = NULL; + int ret; + + /* Since CONFIG_VDI_BLOCK_SIZE is disabled by default, + * cluster-size is not part of the QAPI schema; therefore we have + * to parse it before creating the QAPI object. */ +#if defined(CONFIG_VDI_BLOCK_SIZE) + block_size = qemu_opt_get_size_del(opts, + BLOCK_OPT_CLUSTER_SIZE, + DEFAULT_CLUSTER_SIZE); + if (block_size < BDRV_SECTOR_SIZE || block_size > UINT32_MAX || + !is_power_of_2(block_size)) + { + error_setg(errp, "Invalid cluster size"); + ret = -EINVAL; + goto done; + } +#endif + + qdict = qemu_opts_to_qdict_filtered(opts, NULL, &vdi_create_opts, true); + + qdict_put_str(qdict, "file", ""); /* FIXME */ + + /* Get the QAPI object */ + v = qobject_input_visitor_new_keyval(QOBJECT(qdict)); + visit_type_BlockdevCreateOptionsVdi(v, NULL, &create_options, &local_err); + visit_free(v); + + if (local_err) { + error_propagate(errp, local_err); + ret = -EINVAL; + goto done; + } + + create_options->size = ROUND_UP(create_options->size, BDRV_SECTOR_SIZE); + + ret = vdi_co_do_create(filename, opts, create_options, block_size, errp); +done: + QDECREF(qdict); + qapi_free_BlockdevCreateOptionsVdi(create_options); + return ret; +} + static void vdi_close(BlockDriverState *bs) { BDRVVdiState *s = bs->opaque; diff --git a/qapi/block-core.json b/qapi/block-core.json index 48f86ce959..822ea0a9fb 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -3769,6 +3769,24 @@ 'size': 'size' } } ## +# @BlockdevCreateOptionsVdi: +# +# Driver specific image creation options for VDI. +# +# @file Node to create the image format on +# @size Size of the virtual disk in bytes +# @static Whether to create a statically (true) or +# dynamically (false) allocated image +# (default: false, i.e. dynamic) +# +# Since: 2.12 +## +{ 'struct': 'BlockdevCreateOptionsVdi', + 'data': { 'file': 'BlockdevRef', + 'size': 'size', + '*static': 'bool' } } + +## # @BlockdevCreateNotSupported: # # This is used for all drivers that don't support creating images. |